differences in turnover predictors between multilevel and single level direct selling organizations

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眩晕症

眩晕症
Rotation sensors in the semicircular canals, provide our sense of head turning. Gravity sensors in the otolith organs, provide our sense of which way is straight down, like a plumb line.
Benign Paroxysmal Positional Vertigo
DEBRIS
Debris
Panel A shows debris (arrow) in the posterior semicircular canal as observed intraoperatively (photograph courtesy of Dr. Lorne Parnes). Panel B shows a scanning electron micrograph of an intralabyrinthine particle, obtained during surgery. The debris is thought to consist of calcium carbonate crystals that originate in the utriculus of the vestibular labyrinth.
The Balance System : How it functions
急性一侧损伤
The Balance System : How it functions
when one labyrinth becomes permanently damaged (c), as from viral labyrinthitis, the loss of input from that side is interpreted in the brain as a constant rotation or tilt. Acutely, the person may have the sensation of spinning, and the eyes will be turning (nystagmus). With time, the brain compensates for this new state by readjusting the null point at which the system is again at equilibrium when at rest (d).

数据分析英语试题及答案

数据分析英语试题及答案

数据分析英语试题及答案一、选择题(每题2分,共10分)1. Which of the following is not a common data type in data analysis?A. NumericalB. CategoricalC. TextualD. Binary2. What is the process of transforming raw data into an understandable format called?A. Data cleaningB. Data transformationC. Data miningD. Data visualization3. In data analysis, what does the term "variance" refer to?A. The average of the data pointsB. The spread of the data points around the meanC. The sum of the data pointsD. The highest value in the data set4. Which statistical measure is used to determine the central tendency of a data set?A. ModeB. MedianC. MeanD. All of the above5. What is the purpose of using a correlation coefficient in data analysis?A. To measure the strength and direction of a linear relationship between two variablesB. To calculate the mean of the data pointsC. To identify outliers in the data setD. To predict future data points二、填空题(每题2分,共10分)6. The process of identifying and correcting (or removing) errors and inconsistencies in data is known as ________.7. A type of data that can be ordered or ranked is called________ data.8. The ________ is a statistical measure that shows the average of a data set.9. A ________ is a graphical representation of data that uses bars to show comparisons among categories.10. When two variables move in opposite directions, the correlation between them is ________.三、简答题(每题5分,共20分)11. Explain the difference between descriptive andinferential statistics.12. What is the significance of a p-value in hypothesis testing?13. Describe the concept of data normalization and its importance in data analysis.14. How can data visualization help in understanding complex data sets?四、计算题(每题10分,共20分)15. Given a data set with the following values: 10, 12, 15, 18, 20, calculate the mean and standard deviation.16. If a data analyst wants to compare the performance of two different marketing campaigns, what type of statistical test might they use and why?五、案例分析题(每题15分,共30分)17. A company wants to analyze the sales data of its products over the last year. What steps should the data analyst take to prepare the data for analysis?18. Discuss the ethical considerations a data analyst should keep in mind when handling sensitive customer data.答案:一、选择题1. D2. B3. B4. D5. A二、填空题6. Data cleaning7. Ordinal8. Mean9. Bar chart10. Negative三、简答题11. Descriptive statistics summarize and describe thefeatures of a data set, while inferential statistics make predictions or inferences about a population based on a sample.12. A p-value indicates the probability of observing the data, or something more extreme, if the null hypothesis is true. A small p-value suggests that the observed data is unlikely under the null hypothesis, leading to its rejection.13. Data normalization is the process of scaling data to a common scale. It is important because it allows formeaningful comparisons between variables and can improve the performance of certain algorithms.14. Data visualization can help in understanding complex data sets by providing a visual representation of the data, making it easier to identify patterns, trends, and outliers.四、计算题15. Mean = (10 + 12 + 15 + 18 + 20) / 5 = 14, Standard Deviation = √[(Σ(xi - mean)^2) / N] = √[(10 + 4 + 1 + 16 + 36) / 5] = √52 / 5 ≈ 3.816. A t-test or ANOVA might be used to compare the means ofthe two campaigns, as these tests can determine if there is a statistically significant difference between the groups.五、案例分析题17. The data analyst should first clean the data by removing any errors or inconsistencies. Then, they should transformthe data into a suitable format for analysis, such ascreating a time series for monthly sales. They might also normalize the data if necessary and perform exploratory data analysis to identify any patterns or trends.18. A data analyst should ensure the confidentiality andprivacy of customer data, comply with relevant data protection laws, and obtain consent where required. They should also be transparent about how the data will be used and take steps to prevent any potential misuse of the data.。

2022年考研考博-考博英语-北京科技大学考试预测题精选专练VII(附带答案)卷1

2022年考研考博-考博英语-北京科技大学考试预测题精选专练VII(附带答案)卷1

2022年考研考博-考博英语-北京科技大学考试预测题精选专练VII(附带答案)第1套一.综合题(共25题)1.单选题The disagreement over trade restrictions could seriously() relations between the two countries.问题1选项A.tumbleB.jeopardizeC.manipulateD.intimidate【答案】B【解析】考查动词辨析。

A项tumble“摔倒,倒塌”,B项jeopardize“危害,使陷危地”,C项manipulate“操作,操纵”,D项intimidate“恐吓,威胁”。

根据句子关键词disagreement over trade restrictions(关于贸易限制的分歧)和relations(关系)可猜测,空格部分表示“贸易分歧恶化了关系”,因此四个选项中只有jeopardize符合。

句意:贸易限制问题上的分歧可能严重危及两国关系。

因此,该题选择B项正确。

2.单选题The belief that it’s healthy to let off steam no longer()for we are working under heavy pressure.问题1选项A.holdsB.carriesC.takesD.stands【答案】C【解析】考查动词辨析。

A项hold“拥有,持有”,B项carry“拿,携带”,C项take“行得通,花费”,D项stand“站立,位于”。

根据句子可知,空格部分是和名词belief(信念)构成主谓,把四个选项分别代入,只有take符合。

句意:因为我们在巨大的压力下工作,所以不再相信释放压力是有益健康的。

因此,该题选择C项正确。

3.单选题John has such()power that his friends always behave in the way that he wants them to. 问题1选项A.convincingB.feasibleC.operationalD.manipulative【答案】A【解析】考查形容词辨析。

difference in differences模型

difference in differences模型

difference in differences模型差异差异模型(Difference-in-Differences Model)差异差异模型是一种经济学中常用的研究方法,用于评估政策或干预措施对特定群体或区域的影响。

它通过比较政策或干预前后的差异差异来确定政策的效果,从而消除其他潜在因素的干扰。

在差异差异模型中,研究者通常选择两个群体或区域进行比较。

其中一个群体或区域接受政策或干预措施,而另一个群体或区域不接受。

通过比较这两个群体或区域在政策实施前后的差异,可以推断出政策对研究对象的影响。

为了实施差异差异模型,研究者需要收集政策实施前后两个群体或区域的数据。

这些数据可以包括经济指标、社会指标、行为数据等。

收集到的数据可以通过统计分析方法进行处理和分析,从而得出结论。

差异差异模型的一个重要前提是平行趋势假设。

平行趋势假设要求政策实施前后的两个群体或区域在除了政策影响之外的其他因素上具有相同的趋势。

如果平行趋势假设成立,那么政策实施前后的差异可以被归因于政策效果,否则可能存在其他因素的干扰。

差异差异模型的优点是可以综合考虑个体和时间的效应,减少了其他因素的干扰。

它在实证研究中得到了广泛应用,例如评估政府政策、社会计划和医疗干预的效果等。

然而,差异差异模型也存在一些限制。

首先,它的结果可能受到数据的选择和处理方法的影响。

其次,由于实施差异差异模型需要进行对比群体或区域的选择,可能存在选择偏差。

此外,平行趋势假设的成立也需要有合理的理论基础和足够的数据支持。

综上所述,差异差异模型是一种有力的研究方法,可以评估政策或干预措施的效果。

它的实施步骤包括选择比较群体或区域、收集数据、进行统计分析和得出结论。

然而,研究者在应用差异差异模型时需要注意一些限制和假设的前提。

通过合理运用差异差异模型,可以为政策制定和社会实践提供有益的参考依据。

considered to be a predictors

considered to be a predictors

considered to be a predictors
"be considered to be a predictor"的意思是“被认为是一个预测指标”。

下面是两个例子:
研究团队在查阅了所有数据之后,注意到了一个明显的趋势:领取养老金的个人所经历的智力下降速度比仍在工作的人快得多。

退休人员智力下降最显著的特征是记忆延迟,这一特征被广泛认为是痴呆症的准确预测指标。

一个人的血液胆固醇浓度被认为是其患上致命心脏病或中风的可能性的预测指标,胆固醇水平越高,预期发病的时间越早。

因此,应该避免摄入过量的食物胆固醇。

一种新的部分神经进化网络的股票预测(英文)

一种新的部分神经进化网络的股票预测(英文)

一种新的部分神经进化网络的股票预测(英文)一种新的部分神经进化网络的股票预测自从股票市场的出现以来,人们一直在寻求能够提前预测股票走势的方法。

许多投资者和研究人员尝试使用各种技术分析工具和模型来预测股票未来的走势,但是股票市场的复杂性和难以预测性使得这变得困难重重。

因此,寻找一种能够准确预测股票走势的方法一直是金融界的热点问题。

近年来,人工智能技术在金融领域的应用日益增多。

其中,神经网络是一种被广泛使用的工具,它可以自动学习和识别模式,并根据所学的模式进行预测。

然而,传统神经网络在预测股票市场方面存在诸多问题,例如过拟合和难以处理大量数据等。

为了克服这些问题,本文提出了一种新的部分神经进化网络(Partial Neural Evolving Network, PNEN)模型来预测股票走势。

PNEN模型将神经网络和进化算法相结合,通过优化和训练来实现更准确的预测结果。

PNEN模型的核心思想是将神经网络的隐藏层拆分为多个小模块,每个小模块只负责处理一部分输入数据。

通过这种方式,模型可以更好地适应不同的市场情况和模式。

同时,采用进化算法来优化模型的参数,可以进一步提高模型的预测性能。

具体而言,PNEN模型包括以下几个步骤:1. 数据准备:从股票市场获取历史交易数据,并对数据进行预处理和归一化处理,以便更好地输入到模型中。

2. 构建模型结构:将神经网络的隐藏层拆分为多个小模块,通过进化算法来确定每个小模块的结构和参数。

进化算法通过优化模型的准确性和稳定性,以获得更好的预测结果。

3. 训练模型:使用历史数据集对模型进行训练,并通过反向传播算法来更新模型的权重和偏置。

同时,通过与进化算法的交互,不断调整模型结构和参数。

4. 预测结果:使用训练好的模型对未来的股票走势进行预测。

通过模型对市场的分析和判断,可以为投资者提供决策参考。

为了验证PNEN模型的效果,我们在实际的股票市场数据上进行了实验。

结果表明,与传统神经网络模型相比,PNEN 模型在预测股票走势方面具有更好的准确性和稳定性。

cfa三级写作题

cfa三级写作题

cfa三级写作题CFA三级写作题通常涉及金融领域的实际情境,要求考生运用所学的知识和技能,从多个角度进行分析和解决问题。

以下是一个例子:题目:假设你是一家投资公司的高级分析师,你的团队正在考虑投资某个新兴市场国家的股票市场。

请你从政治、经济、金融和风险管理等角度,全面评估该国股票市场的可行性和潜在风险。

回答:从政治角度来看,评估一个新兴市场国家的股票市场可行性时,首先需要考虑政治稳定性。

政治动荡和不稳定的政府可能导致市场波动和不可预测的政策变化,从而增加投资风险。

因此,我们需要研究该国政府的稳定性、政策连续性以及对外投资者的保护程度。

在经济方面,我们需要分析该国的经济增长前景和宏观经济指标。

关注国内生产总值(GDP)增长率、通货膨胀率、失业率等数据,以评估该国经济的健康状况和增长潜力。

此外,还需要了解该国的产业结构、外贸依赖程度和财政状况,以判断股票市场的可行性和投资机会。

金融方面的考虑包括市场的流动性、交易成本和金融基础设施的完善程度。

投资者在股票市场中需要有足够的流动性,以便买卖股票时能够及时完成交易。

同时,低交易成本也是吸引投资者的关键因素之一。

此外,金融基础设施的完善程度,如证券交易所的规范性、结算与清算系统的健全性,也会对股票市场的可行性产生影响。

风险管理方面,我们需要考虑市场风险和特定风险。

市场风险涉及整个市场的波动性和不确定性,如市场流动性不足、政策风险等。

特定风险则是指与特定股票或行业相关的风险,如公司治理问题、行业竞争等。

我们需要评估这些风险,并制定相应的风险管理策略,以保护投资组合的价值。

综上所述,评估一个新兴市场国家股票市场的可行性和潜在风险需要从政治、经济、金融和风险管理等多个角度进行全面分析。

只有综合考虑各个因素,我们才能做出明智的投资决策。

2022年考研考博-考博英语-厦门大学考试全真模拟易错、难点剖析AB卷(带答案)试题号:88

2022年考研考博-考博英语-厦门大学考试全真模拟易错、难点剖析AB卷(带答案)试题号:88

2022年考研考博-考博英语-厦门大学考试全真模拟易错、难点剖析AB卷(带答案)一.综合题(共15题)1.单选题Scientific evidence from different_______demonstrates that in most humans the left hemisphere of the brain controls language.问题1选项A.scopesB.rangesC.disciplinesD.arrays【答案】C【解析】scopes范围, 领域; ranges范围, 区间; disciplines学科; arrays阵列, 数组。

句意:来自不同学科的科学证据表明, 大多数人的大脑左半球控制着语言功能。

选项C符合句意。

2.单选题To survive in the intense trade competition between countries, we must_______the qualities and varieties of products we make to the world market demand.问题1选项A.improveB.enhanceC.guaranteeD.gear【答案】D【解析】improve改善, 增进; enhance增加, 提高; guarantee保证, 担保; gear适合。

句意:为了在国家间激烈的贸易竞争中生存, 我们必须使我们生产的产品的质量和品种适应世界市场的需求。

gear to 使适应, 所以选项D正确。

3.单选题London's Heathrow airport,alongside many other major airports,is hoping that_______passenger numbers will be swallowed up by a new generation of huge aircraft.问题1选项A.probateB.obsoleteC.swellingD.recapitulating【答案】C【解析】probate遗嘱认证的; obsolete荒废的, 淘汰的; swell增大; 磁胀; recapitulate 重述要点, 概述。

Bankruptcy prediction with Non-financial variables

Bankruptcy prediction with Non-financial variables

2
Abstract
Corporate financial failure prediction is one of the most important issues for management, investors, governments, and other stakeholders. In this thesis, the prediction sample is based on 30 failed and 30 non-failed companies from industrial engineering in U.S. markets. Twenty financial variables are selected through the factor analysis while non-financial variables would directly add into logistic regression to establish forecasting models. Time period is from 1995 to 2009 in order to find the effects of financial crisis on corporate failure. Thus, I incorporate financial crisis into the prediction model, but it does not have significant influence in financial failure in industrial engineering. The finding and other researches in this field support the significance of opinions from auditors in prediction power. The prediction models developed by both financial and non-financial factors have better predictive abilities and explanatory power compared with financial based models. However, Ohlson model (1980) show higher prediction accuracy for one year before failure to comparable models developed through factor analysis.

广东省初三上学期期中英语试题及解答参考

广东省初三上学期期中英语试题及解答参考

广东省英语初三上学期期中复习试题及解答参考一、听力部分(本大题有20小题,每小题1分,共20分)1、What is the name of the capital city in France?A) LondonB) ParisC) RomeD) MadridAnswer: B) ParisExplanation: The capital city of France is Paris, making option B the correct answer. London is the capital of the United Kingdom, Rome is the capital of Italy, and Madrid is the capital of Spain.2、How do you spell the word “mathematics”?A) mathmaticB) mathmaticC) mathamaticsD) mathmaticAnswer: C) mathamaticsExplanation: The correct spelling of the word “mathematics” is with two ‘a’s and one ’t’ at the end, making option C the correct answer. Options A and B are incorrect because they have an extra ‘c’ and no ‘t’, respectively. OptionD is incorrect because it has an extra ‘c’ and no ‘t’.3.You are listening to a conversation between a student and a teacher. The student is asking for help with a school project. Listen to the conversation and answer the following question:How does the teacher suggest the student begin the research for the project?A)Start with a general topic and narrow it down.B)Use only books from the school library.C)Focus on the most recent articles.D)Avoid using the internet for research.Answer: A) Start with a general topic and narrow it down.Explanation: The teacher suggests that the student begin with a broad topic and then gradually narrow it down to a specific aspect of the project. This helps to avoid getting overwhelmed and ensures that the research is focused and manageable.4.In this next listening passage, you will hear a short interview with a local author. The author discusses her inspiration for her latest book. Listen to the passage and answer the following question:What is the author’s main reason for writing her new book?A)To share her personal experiences.B)To educate readers about a historical event.C)To explore the theme of identity.D)To entertain readers with a fictional story.Answer: C) To explore the theme of identity.Explanation: The author mentions that her new book is an exploration of the theme of identity, particularly focusing on the journey of a main character who discovers their own sense of self. This is the main reason behind writing the book, as stated in the interview.5.Listen to the dialogue and choose the best answer to complete the sentence.A: What are you doing, Jack?B:__________Options:a) I’m reading a book.b) I’m watching TV.c) I’m listening to music.Answer: b) I’m watching TV.Explanation: The question asks about what Jack is doing at the moment. The correct answer is “I’m watching TV,” which is option b.6.Listen to the dialogue and fill in the blank with the correct word from the box.A: __________, Tom, you are so quiet.B: I’m just thinking, Mary.Options:a) Excuse meb) Hic) Hellod) SorryAnswer: b) HiExplanation: The question requires filling in the blank with a greeting that fits the context of the dialogue. “Hi” is a casual and appropriate greeting, making it the correct answer.7、Listen to the conversation and answer the question.W: Hi, John. How was your science experiment last week?M: Oh, it was quite interesting. We had to design a robot that could clean a room.W: That sounds fun. What did you use for the experiment?M: We used some basic materials like motors, wires, and a computer.W: Did you face any difficulties?M: Yes, we had some problems with the programming part.W: Well, it’s all part of the learning process.Question: What did John’s group use to build their robot?A)ToysB)Basic materialsC)Advanced technologyD)Traditional toolsAnswer: B) Basic materialsExplanation: In the conversation, John mentions that they used basic materials like motors, wires, and a computer for the experiment. Therefore, option B is the correct answer.8、Listen to the dialogue and complete the following sentence with the correct word from the box.W: Hi, Mark. I heard that you’re going on a trip to the mountains this weekend.M: Yes, I am. I can’t wait to go hiking and enjoy the beautiful scenery.W: That sounds amazing. Are you planning to stay overnight?M: Definitely. I’ll camp there and enjoy the night sky.W: I wish I could join you. What are you taking with you for the trip?M: I’ll bring some food, water, a sleeping bag, and a tent.W: That’s a good list. Don’t forget to bring a flashlight too.M: Oh, I almost forgot. Thanks for the reminder.Question: What is one thing Mark will NOT bring on his trip?A)FoodB)WaterC)TentD)CarAnswer: D) CarExplanation: In the conversation, Mark lists the items he plans to bring for his trip, such as food, water, a sleeping bag, and a tent. However, he does not mention bringing a car, so option D is the correct answer.9、What is the main topic of the conversation between the two speakers?A. The importance of exercise for health.B. The upcoming school sports day.C. The weather forecast for the weekend.D. The latest sports news from the radio.Answer: BExplanation: The conversation between the two speakers focuses on the excitement about the upcoming school sports day, with mentions of different sports activities and preparations. This indicates that the main topic is the school sports day.10、Why does the woman say she needs to take her medicine right away?A. She feels dizzy and needs to rest.B. She has a headache and wants to go to bed.C. She has a scheduled appointment with her doctor.D. She needs to take it before the doctor’s visit.Answer: AExplanation: The woman mentions that she is feeling dizzy and needs to take her medicine right away. This indicates that the immediate need for the medicine is due to her dizziness, not because of a scheduled appointment, a headache, or before a doctor’s visit.11.You hear a conversation between two students, Alice and Bob, discussing their weekend plans.Alice: Hey Bob, do you have any plans for this weekend?Bob: Well, actually, I do. I’m planning to go hiking with my friends. How about you, Alice?Alice: That sounds fun! I was thinking of visiting the art museum in town. What do you think?Question: What does Alice plan to do this weekend?A) Go hikingB) Visit the art museumC) Go shoppingD) Stay homeAnswer: B) Visit the art museumExplanation: In the conversation, Alice mentions that she plans to visit the art museum, so the correct answer is B.12.You hear a weather report for a city.Weatherman: Good afternoon, everyone. Here’s the latest weather update for our city. It’s going to be a sunny day with a high of 25 degrees Celsius. However, there’s a chance of a brief shower in the late afternoon. So, if you’re planning to go out, make sure to carry an umbrella. Have a great day!Question: What is the weather forecast for today?A) RainyB) SunnyC) CloudyD) StormyAnswer: B) SunnyExplanation: The weather report clearly states that it’s going to be a sunnyday with a high of 25 degrees Celsius, so the correct answer is B.13.You are listening to a conversation between a student and a teacher.Student: “Mr.Smith, I was wondering if I could make up the test I missed last week.”Teacher: “Yes, you can, but you have to complete a make-up quiz tomorrow. It will cover the same topics as the original test.”Question: What did the teacher agree to do for the student?A) Give the original test again.B) Allow the student to take a make-up quiz.C) Give the student extra help with the missed topics.D) Cancel the missed test entirely.Answer: B) Allow the student to take a make-up quiz.解析:在这段对话中,老师明确表示学生可以补考,所以答案是B。

人生选择英语作文

人生选择英语作文

Life is a series of choices,each one shaping our path and defining our future.When it comes to writing an English essay on life choices,there are several key points to consider to craft a compelling narrative or argument.1.Introduction:Begin with a hook that grabs the readers attention.This could be a quote,a rhetorical question,or a bold statement about the importance of choices in life.Briefly introduce the topic and the main points you will discuss in the essay.2.The Nature of Choices:Explain what choices are and how they differ from decisions.Choices are often presented as options between two or more alternatives,while decisions are the outcomes of those choices.Discuss the impact of choices on an individuals life,emphasizing that they can lead to significant consequences.3.Types of Choices:Categorize life choices into different types,such as career choices,relationship choices, educational choices,and moral choices.Provide examples for each type to illustrate their importance and potential outcomes.4.Factors Influencing Choices:Discuss the various factors that influence the choices we make,including personal values,societal expectations,peer pressure,and economic circumstances.Consider the role of upbringing,culture,and personal experiences in shaping our decisionmaking processes.5.The Process of Making Choices:Describe the thought process that typically precedes making a choice.This could involve weighing the pros and cons,considering longterm versus shortterm benefits,and evaluating the potential risks and rewards.Highlight the importance of critical thinking and selfawareness in making informed choices.6.The Consequences of Choices:Explore the outcomes of choices,both positive and negative.Discuss how some choices can lead to personal growth and fulfillment,while others may result in regret or missed opportunities.Reflect on the idea that every choice,regardless of its outcome,contributes to our life experience and personal development.7.The Importance of Accepting Responsibility:Emphasize the need to accept responsibility for the choices we make.This includes acknowledging the consequences,learning from mistakes,and adapting to new circumstances that arise from our decisions.8.Overcoming the Fear of Making Choices:Address common fears associated with making choices,such as fear of failure,fear of the unknown,or fear of making the wrong decision.Offer strategies for overcoming these fears,such as seeking advice,gathering information,and trusting ones intuition.9.Conclusion:Summarize the main points of your essay,reinforcing the significance of choices in shaping our lives.End with a thoughtprovoking statement or a call to action that encourages readers to reflect on their own choices and the paths they have taken or will take in the future.10.Personal Reflection Optional:If appropriate,include a personal anecdote or reflection that illustrates your own experiences with making choices and the lessons youve learned from them.Remember to use a variety of sentence structures and vocabulary to keep your essay engaging.Additionally,ensure that your essay is wellorganized,with clear transitions between paragraphs to guide the reader through your argument or narrative.。

2000年考研英语真题(含答案解析)

2000年考研英语真题(含答案解析)

2000年全国硕士研究生入学统一考试英语试题Part ⅠClose TestDirections:For each numbered blank in the following passage, there are four choices marked [A], [B], [C] and [D].Choose the best one and mark your answer on ANSWER SHEET 1 by blackening the corresponding letter in the brackets with a pencil.(10 points)①If a farmer wishes to succeed, he must try to keep a wide gap between his consumption and his production.②He must store a large quantity of grain 1 consuming all his grain immediately.③He can continue to support himself and his family 2 he produces a surplus.④He must use this surplus in three ways: as seed for sowing, as an insurance 3 the unpredictable effects of bad weather and as a commodity which he must sell in order to 4 old agricultural implements and obtain chemical fertilizers to 5 the soil.⑤He may also need money to construct irrigation 6 and improve his farm in other ways.⑥If no surplus is available, a farmer cannot be 7 .⑦He must either sell some of his property or 8 extra funds in the form of loans.⑧Naturally he will try to borrow money at a low 9 of interest, but loans of this kind are not 10 obtainable.[139 words]1.[A] other than [B] as well as[C] instead of [D] more than2.[A] only if [B] much as[C] long before [D] ever since3.[A] for [B] against[C] of [D] towards4.[A] replace [B] purchase[C] supplement [D] dispose5.[A] enhance [B] mix[C] feed [D] raise6.[A] vessels [B] routes[C] paths [D] channels7.[A] self-confident [B] self-sufficient[C] self-satisfied [D]self-restrained8.[A] search [B] save[C] offer [D] seek9.[A] proportion [B] percentage[C] rate [D] ratio10.[A] genuinely [B] obviously[C] presumably [D] frequentlyPart ⅡReading ComprehensionDirections:Each of the passages below is followed by some questions.For each question there are four answers marked [A], [B], [C] and [D].Read the passages carefully and choose the best answer to each of the questions.Then mark your answer on ANSWER SHEET 1 by blackening the corresponding letter in the brackets with a pencil.(40 points)Passage 1①A history of long and effortless success can be a dreadful handicap, but, if properly handled, it may become a driving force.②When the United States entered just such a glowing period after the end of the Second World War, it had a market eight times larger than any competitor, giving its industries unparalleled economies of scale.③Its scientists were the world s best; its workers the most skilled.④(11)America and Americans were prosperous beyond the dreams of the Europeans and Asians whose economies the war had destroyed.①It was inevitable that this primacy should have narrowed as other countries grew richer.②Just as inevitably, the retreat from predominance proved painful.③By the mid-1980s Americans had found themselves at a loss over their fading industrial competitiveness.④Some huge American industries, such as consumer electronics, had shrunk or vanished in the face of foreign competition.⑤By 1987 there was only one American television maker left, Zenith.⑥(Now there is none: Zenith was bought by South Korea’s LG Electronics in July.) ⑦(12)Foreign-made cars and textiles were sweeping into the domestic market.America’s machine-tool industry was on the ropes.⑧For a while it looked as though the making of semiconductors, which America had invented and which sat at the heart of the new computer age, was going to be the next casualty.①All of this caused a crisis of confidence.②Americans stopped taking prosperity for granted.③They began to believe that their way of doing business was failing, and that their incomes would therefore shortly begin to fall as well.④The mid-1980s brought one inquiry after another into the causes of America’s industrial decline.⑤Their sometimes sensational findings were filled with warnings about the growing competition from overseas.①How things have changed! ②In 1995 the United States can look back on five years of solid growth while Japan has been struggling.③(14)Few Americans attribute this solely to such obvious causes as a devalued dollar or the turning of the business cycle.④Self-doubt has yielded to blind pride.⑤“American industry has changed its structure, has gone on a diet, has learnt to be more quick-witted,”according to Richard Cavanaugh, executive dean of Harvard’s Kennedy School of Government.⑥“It makes me proud to be an American just to see how our businesses are improving their productivity,”says Stephen Moore of the Cato Institute, a think-tank in Washington, DC.⑦And William Sahlman of the Harvard Business School believes that people will look back on this period as “a golden age of business management in the United States.”[429 words]11.The U.S.achieved its predominance after World War II because.[A]it had made painstaking efforts towards this goal[B]its domestic market was eight times larger than before[C]the war had destroyed the economies of most potential competitors [D]the unparalleled size of its workforce had given an impetus to its economy12.The loss of U.S.predominance in the world economy in the 1980s is manifested in the fact that the American.[A]TV industry had withdrawn to its domestic market[B]semiconductor industry had been taken over by foreign enterprises [C]machine-tool industry had collapsed after suicidal actions [D]auto industry had lost part of its domestic market13.What can be inferred from the passage?[A]It is human nature to shift between self-doubt and blind pride.[B]Intense competition may contribute to economic progress.[C] The revival of the economy depends on international cooperate [D]A long history of success may pave the way for further development.14.The author seems to believe the revival of the U.S.economy in the 1990s can be attributed to the.[A]turning of the business cycle[B] restructuring of industry[C] improved business management[D] success in educationPassage 2①(15)Being a man has always been dangerous.②There are about 105 males born for every 100 females, but this ratio drops to near balance at the age of maturity, and among 70-year-olds there are twice as many women as men.③But the great universal of male mortality is being changed.④Now, boy babies survive almost as well as girls do.⑤This means that, for the first time, there will be an excess of boys in those crucial years when they are searching for a mate.⑥More important, another chance for natural selection has been removed.⑦Fifty years ago, the chance of a baby (particularly a boy baby) surviving depended on its weight. A kilogram too light or too heavy meant almost certain death.⑧Today it makes almost no difference.Since much of the variation is due to genes, one more agent of evolution has gone.①There is another way to commit evolutionary suicide: stay alive, but have fewer children.②Few people are as fertile as in the past.③Except in some religious communities, very few women have 15 children.④Nowadays the number of births, like the age of death, has become average.⑤Most of us have roughly the same number of offspring.⑥(16)Again, differences between people and the opportunity for natural selection to take advantage of it have diminished.⑦India shows what is happening.The country offers wealth for a few in the great cities and poverty for the remaining tribal peoples.⑧The grand mediocrity of today—everyone being the same in survival and number of offspring—means that natural selection has lost 80% of its power in upper-middle-class India compared to the tribes.For us, this means that evolution is over; the biological Utopia has arrived.②Strangely, it has involved little physical change.③No other species fills so many places in nature.④But in the past 100, 000 years —even the past 100 years—our lives have been transformed but our bodies have not.⑤(17)We did not evolve, because machines and society did it for us.⑥Darwin had a phrase to describe those ignorant of evolution: they “look at an organic being as a savage looks at a ship, as at something wholly beyond his comprehension.”⑦No doubt we will remember a 20th century way of life beyond comprehension for its ugliness.But however amazed our descendants may be at how far from Utopia we were, they will look just like us.[406 words]15.What used to be the danger in being a man according to the first paragraph?[A] A lack of mates. [B] A fierce competition.[C] A lower survival rate. [D] A defective gene.16.What does the example of India illustrate?[A] Wealthy people tend to have fewer children than poor people.[B] Natural selection hardly works among the rich and the poor.[C] The middle class population is 80% smaller than that of the tribes.[D] India is one of the countries with a very high birth rate.17.The author argues that our bodies have stopped evolving because.[A] life has been improved by technological advance[B] the number of female babies has been declining[C] our species has reached the highest stage of evolution[D] the difference between wealth and poverty is disappearing18.Which of the following would be the best title for the passage?[A] Sex Ratio Changes in Human Evolution.[B] Ways of Continuing Man’s Evolution.[C] The Evolutionary Future of Nature.[D] Human Evolution Going Nowhere.Passage 3①(20)When a new movement in art attains a certain fashion, it is advisable to find out what its advocates are aiming at, for, however farfetched and unreasonable their principles may seem today, it is possible that in years to come they may be regarded as normal.②With regard to Futurist poetry, however, the case is rather difficult, for whatever Futurist poetry may be—even admitting that the theory on which it is based may be right—it can hardly be classed as Literature.①This, in brief, is what the Futurist says: for a century, past conditions of life have been conditionally speeding up, till now we live in a world of noise and violence and speed.②Consequently, our feelings, thoughts and emotions have undergone a corresponding change.③(21)This speeding up of life, says the Futurist, requires a new form of expression.④We must speed up our literature too, if we want to interpret modern stress.⑤We must pour out a large stream of essential words, unhampered by stops, or qualifying adjectives, or finite verbs.⑥Instead of describing sounds we must make up words that imitate them; we must use many sizes of type and different colored inks on the same page, and shorten or lengthen words at will.①Certainly their descriptions of battles are confused.②But it isa little upsetting to read in the explanatory notes that a certain line describes a fight between a Turkish and a Bulgarian officer on a bridge off which they both fall into the river —and then to find that the line consists of the noise of their falling and the weights of the officers: “Pluff! Pluff! A hundred and eighty-five kilograms.”①(22)This, though it fulfills the laws and requirements of Futurist poetry, can hardly be classed as Literature.②All the same, no thinking man can refuse to accept their first proposition: that a great change in our emotional life calls for a change of expression.③The whole question is really this: have we essentially changed?[334 words]19.This passage is mainly.[A] a survey of new approaches to art[B] a review of Futurist poetry[C] about merits of the Futurist movement[D] about laws and requirements of literature20.When a novel literary idea appears, people should try to.[A] determine its purposes [B] ignore its flaws[C] follow the new fashions [D] accept the principles21.Futurists claim that we must.[A] increase the production of literature[B] use poetry to relieve modern stress[C] develop new modes of expression[D] avoid using adjectives and verbs22.The author believes that Futurist poetry is.[A] based on reasonable principles[B] new and acceptable to ordinary people[C] indicative of a basic change in human nature[D] more of a transient phenomenon than literaturePassage 4①(23)Aimlessness has hardly been typical of the postwar Japan whose productivity and social harmony are the envy of the United States and Europe.②But increasingly the Japanese are seeing a decline of the traditional work-moral values.③Ten years ago young people were hardworking and saw their jobs as their primary reason for being, but now Japan has largely fulfilled its economic needs, and young people don’t know where they should go next.①The coming of age of the postwar baby boom and an entry of women into the male-dominated job market have limited the opportunities of teen-agers who are already questioning the heavy personal sacrifices involved in climbing Japan’s rigid social ladder to good schools and jobs.②In a recent survey, it was found that only 24.5 percent of Japanese students were fully satisfied with school life, compared with 67.2 percent of students in the United States.③In addition, far more Japanese workers expressed dissatisfaction with their jobs than did their counterparts in the 10 other countries surveyed.①While often praised by foreigners for its emphasis on the basics, Japanese education tends to stress test taking and mechanical learning over creativity and self-expression.②(25)“Those things that do not show up in the test scores—personality, ability, courage or humanity—are completely ignored,” says Toshiki Kaifu, chairman of the ruling Liberal Democratic Party’s education committee.③“Frustration against this kind of thing leads kids to drop out and run wild.”④Last year Japan experienced 2, 125 incidents of school violence, including 929 assaults on teachers.⑤Amid the outcry, many conservative leaders are seeking a return to the prewar emphasis on moral education.⑥Last year MitsuoSetoyama, who was then education minister, raised eyebrows when he argued that liberal reforms introduced by the American occupation authorities after World War II had weakened the “Japanese morality of respect for parents.”①(26)But that may have more to do with Japanese life-styles.②“In Japan,” says educator Yoko Muro, “it’s never a question of whether you enjoy your job and your life, but only how much you can endure.”③With economic growth has come centralization; fully 76 percent of Japan’s 119 million citizens live in cities where community and the extended family have been abandoned in favor of isolated, two-generation households.④Urban Japanese have long endured lengthy commutes (travels to and from work) and crowded living conditions, but as the old group and family values weaken, the discomfort is beginning to tell.⑤In the past decade, the Japanese divorce rate, while still well below that of the United States, has increased by more than 50 percent, and suicides have increased by nearly one-quarter.[447 words]23.In the Westerners’ eyes, the postwar Japan was.[A] under aimless development [B] a positive example[C] a rival to the West [D] on the decline24.According to the author, what may chiefly be responsible for the moral decline of Japanese society?[A] Women’s participation in social activities is limited.[B] More workers are dissatisfied with their jobs.[C] Excessive emphasis has been placed on the basics.[D] The life-style has been influenced by Western values.25.Which of the following is true according to the author?[A] Japanese education is praised for helping the young climb the social ladder.[B] Japanese education is characterized by mechanical learning as well as creativity.[C] More stress should be placed on the cultivation of creativity.[D] Dropping out leads to frustration against test taking.26.The change in Japanese life-style is revealed in the fact that.[A] the young are less tolerant of discomforts in life[B] the divorce rate in Japan exceeds that in the U.S.[C] the Japanese endure more than ever before[D] the Japanese appreciate their present lifePassage 5①(27)If ambition is to be well regarded, the rewards of ambition —wealth, distinction, control over one’s destiny—must be deemed worthy of the sacrifices made on ambition’s behalf.②If the tradition of ambitionis to have vitality, it must be widely shared; and it especially must be highly regarded by people who are themselves admired, the educated not least among them.③(28)In an odd way, however, it is the educated who have claimed to have given up on ambition as an ideal.④What is odd is that they have perhaps most benefited from ambition—if not always their own then that of their parents and grandparents.⑤There is a heavy note of hypocrisy in this, a case of closing the barn door after the horses have escaped—with the educated themselves riding on them.①Certainly people do not seem less interested in success and its signs now than formerly.②Summer homes, European travel, BMWs—the locations, place names and name brands may change, but such items do not seem less in demand today than a decade or two years ago.③(29)What has happened is that people cannot confess fully to their dreams, as easily and openly as once they could, lest they be thought pushing, acquisitive and vulgar.④Instead, we are treated to fine hypocritical spectacles, which now more than ever seem in ample supply: the critic of American materialism with a Southampton summer home; the publisher of radical books who takes his meals in three-star restaurants; the journalist advocating participatory democracy in all phases of life, whose own children are enrolled in private schools.⑤For such people and many more perhaps not so exceptional, the proper formulation is, “Succeed at all costs but avoid appearing ambitious.”①The attacks on ambition are many and come from various angles; its public defenders are few and unimpressive, where they are not extremely unattractive.②As a result, the support for ambition as a healthy impulse, a quality to be admired and fixed in the mind of the young, is probably lower than it has ever been in the United States.③This does not mean that ambition is at an end, that people no longer feel its stirrings and promptings, but only that, no longer openly honored, it is less openly professed.④Consequences follow from this, of course, some of which are that ambition is driven underground, or made sly.⑤Such, then, is the way things stand: on the left angry critics, on the right stupid supporters, and in the middle, as usual, the majority of earnest people trying to get on in life.[431 words]27.It is generally believed that ambition may be well regarded if.[A] its returns well compensate for the sacrifices[B] it is rewarded with money, fame and power[C] its goals are spiritual rather than material[D] it is shared by the rich and the famous28.The last sentence of the first paragraph most probably implies that it is.[A] customary of the educated to discard ambition in words[B] too late to check ambition once it has been let out[C] dishonest to deny ambition after the fulfillment of the goal [D] impractical for the educated to enjoy benefits from ambition29.Some people do not openly admit they have ambition because.[A] they think of it as immoral[B] their pursuits are not fame or wealth[C] ambition is not closely related to material benefits[D] they do not want to appear greedy and contemptible30.From the last paragraph the conclusion can be drawn that ambition should be maintained.[A] secretly and vigorously [B]openly and enthusiastically[C] easily and momentarily [D] verbally and spirituallyPart ⅢEnglish-Chinese TranslationDirections:Read the following passage carefully and then translate the underlined segments into Chinese.Your translation must be written neatly on ANSWER SHEET 2.(15 points)Governments throughout the world act on the assumption that the welfare of their people depends largely on the economic strength and wealth of the community.31)Under modern conditions, this requires varying measures of centralized control and hence the help of specialized scientists such as economists and operational research experts.32)Furthermore, it is obvious that the strength of a country’s economy is directly bound up with the efficiency of its agriculture and industry, and that this in turn rests upon the efforts of scientists and technologists of all kinds.It also means that governments are increasingly compelled to interfere in these sectors in order to step up production and ensure that it is utilized to the best advantage.For example, they may encourage research in various ways, including the setting up of their own research centers; they may alter the structure of education, or interfere in order to reduce the wastage of natural resources or tap resources hitherto unexploited; or they may cooperate directly in the growing number of international projects related to science, economics and industry.In any case, all such interventions are heavily dependent on scientific advice and also scientific and technological manpower of all kinds.33)Owing to the remarkable development in mass-communications, people everywhere are feeling new wants and are being exposed to new customs and ideas, while governments are often forced to introduce still further innovations for the reasons given above.At the same time, the normal rate of social change throughout the world is taking place at a vastly accelerated speed compared with the past.For example, 34)in the early industrialized countries of Europe the process of industrialization—with all the far-reaching changes in social patterns that followed—was spread over nearly a century, whereas nowadays a developing nation may undergo the same process in a decade or so.All this has the effect of building up unusual pressures and tensions within the community and consequently presents serious problems for the governments concerned.35)Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements—themselves made relatively easy nowadays by modern means of transport.As a result of all these factors, governments are becoming increasingly dependent on biologists and social scientists for planning the appropriate programs and putting them into effect.[390 words]Section ⅣWriting(15 points)36.Directions:A.Study the following two pictures carefully and write an essay of at least 150 words.B.Your essay must be written neatly on ANSWER SHEET 2.C.Your essay should meet the requirements below:1)Describe the pictures.2)Deduce the purpose of the painter of the pictures.3)Suggest counter-measures.2000年英语试题答案Part ⅠCloze Test1.C2.A3.B4.A5.C6.D7.B8.D9.C 10.DPart ⅡReading ComprehensionPassage 111.C 12.D 13.B 14.APassage 215.C 16.B 17.A 18.DPassage 319.B 20.A 21.C 22.DPassage 423.B 24.D 25.C 26.APassage 527.A 28.C 29.D 30.BPart Ⅲ English-Chinese Translation31.在现代条件下, 这需要程度不同的集中控制措施, 从而就需要获得诸如经济学和运筹学等领域的专家的协助。

2023年12月四级真题第2套

2023年12月四级真题第2套

大学英语四级考试2023年12月真题(第二套)Part I Writing (30 minutes)Directions: Suppose the university newspaper is inviting submissions from the students for its coming edition on the recent development in their hometown. You are now to write an essay for submission. You will have 30 minutes to write the essay. You should write at least 120 words but no more than 180 words.Part II Listening Comprehension (25 minutes)Section ADirections: In this section, you will hear three news reports. At the end of each news report, you will hear two or three questions. Both the news report and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 1 and 2 are based on the news report you have just heard.1. A) He noticed the driver was too young to drive.B) He found there was no one sitting at the wheel.C) He thought something must be wrong with the driver.D) He saw the driver changing lanes much too frequently.2. A) Buy a sports car. C) Leave California.B) Drive across town. D) Visit his sister.Questions 3 and 4 are based on the news report you have just heard.3. A) How they change the way we shop. C) How they cause increased headaches.B) How they alter human skeletons. D) How they affect our communication.4. A)It loosens. C) It hardens.B) It brightens. D) It softens.Questions 5 to 7 are based on the news report you have just heard.5. A) Create Internet pages for him. C) Name an orange tree after him.B) Ask a local pet shop to adopt him. D) Hold a birthday party for him.6. A) He is a bold and aggressive pet. C) He once bit a doctor's receptionist.B) He pays regular visits to village shops. D) He likes to sit on the hairdresser's chair.7. A) He is fond of luxury cat food. C) He knows everybody in the village.B) He likes to stay in villagers' houses. D) He often seeks food around her pub.Section BDirections: In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 8 to 11 are based on the conversation you have just heard.8. A) Who to order the food. C) When to go for their meal.B) Whether to have sandwiches. D) Where to have their lunch.9. A) In the shopping center nearby. C) At the Sandwich Place on Camden Street.B) In the expensive Italian style diner. D) At the American restaurant they frequent.10. A) There is to be a conference call. C)There will be crowds of people waiting for her.B) She has to meet with her boss then. D) She will have a photo taken with Brigette Clark.11. A) She doesn't deem homemade soup tasty. C) She feels Jeremy would rather dine out.B) She doesn't think his wife cooks well. D) She has found the soup smells terrible. Questions 12 to 15 are based on the conversation you have just heard.12. A) A landlady. C) A receptionist.B) A waitress. D) A saleswoman.13. A) He was involved in a terrible car accident last April.B) He has much difficulty getting up and down stairs.C) He is expected to undergo a knee operation.D) He prefers to stay next door to the children.14. A) To please his parents-in-law. C) To satisfy his curiosity.B) To find the best trip for his kids. D) To compare prices.15. A) Visit a local art gallery. C) Take some photos of the islands.B) Go on a boat trip. D) Try her hand-made clothing.Section CDirections: In this section, you will hear three passages. At the end of each passage, you will hear three or four questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D), Then mark the corresponding letter on Answer Sheet I with a single line through the centre. Questions 16 to 18 are based on the passage you have just heard.16.A) They are more intelligent than many of us.B)They have already become our new friends.C) They have begun to affect our social behavior.D) They play increasingly more important roles.17. A) Whether it might have any effect on the way we negotiate.B) Whether it might actually outperform human negotiators.C) Whether it can facilitate business transactions.D) Whether it can speed up legal procedures.18. A) Choose to be tough. C) Use deceptive strategies.B) Sympathize with their opponent. D) Appear to be pleasant.Questions 19 to 21 are based on the passage you have just heard.19. A) They were perceived differently by some academics.B) They still existed six months after the course ended.C) They varied greatly among the course participants.D) They were only measurable within seven weeks.20. A) They can be easily seen among participants in a healthy weight range.B) They should be attributed to participants' change in diet behaviors.C) They are linked to cooking confidence and cooking satisfaction.D) They actually result from eating more fruits and vegetables.21. A) Gender. C) Health.B) Confidence. D) Practice.Questions 22 to 25 are based on the passage you have just heard.22. A) It keeps others away. C) It remains visible.B) It causes discomfort. D) It varies in size.23. A) It makes us feel uncomfortable. C) It brings the acquaintance closer to us.B) It renders the acquaintance a stranger. D) It causes the bubble around us to vanish.24. A) In personal space. C) Within a distance of 18 inches.B) In social space. D) Over 2 feet away from one another.25. A) When we begin to feel fear. C) When we are 3 or 4 years old.B) When we develop a sense of space. D) When we enter our teens.Part III Reading Comprehension (40 minutes)Section ADirections: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.A number of studies have looked at how family life can affect productivity and satisfaction in the workplace. However, there has been 26 little research on the influence of leisure activities. So Ciara Kelly and colleagues recruited 129 hobbyists to look at how the time spent on their hobbies 27 their work life.The researchers found that when participants spent longer than 28 on their leisure activity, their belief in their ability to perform their job was strengthened. But this was only the 29 when they had a serious hobby that was dissimilar to their job, or when their hobby was similar to their work but they only did it 30 . When their hobby was both serious and similar to their job, then spending more time on it actually decreased their work 31 .Why might that be? To maintain a serious hobby, people need to invest significant psychological resources, say the authors—so if the activity has the same kinds of demands as their work, they may be left 32 and unable to perform well at their job. But if their hobby is quite different from their career, it may not 33 in the same way but instead help them develop other knowledge and skills that can 34 their confidence at work. “Consider a scientist who is a keen rock climber," says Kelly. "Since climbing is so far 35 from their day-to-day work activities, they can still recover from the demands of their job with plenty of resources."A) boost B) case C) casually D) efficiency E) estate F) exhaustedG) faculty H) interfere I) normal J) prevalent K) relative L) removedM) scratch N) shaped O) surprisinglySection BDirections: In this section, you are going to read a passage with ten statements attached to it Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2.More fathers are taking paternity leave, but mothers are still doing all the workA) Attitudes towards paternity leave (陪产假) have drastically changed in America in the last five years as more fathers feel comfortable taking extended time off, but gender bias persists when it comes to career prospects and the home, according to a new study of working parents.B) Research by the Boston College Center for Work & Family, which surveyed new parents at fourlarge US companies who were qualified for taking at least six weeks paid parental leave, found that 81% of the 1,240 employees surveyed said the notion of fathers taking leave has become more acceptable.C) Of those surveyed, 62% of fathers took the maximum amount of tine off compared to 93% of mothers, and around three quarters of workers said their employer was equally supportive of mothers and fathers taking parental leave and over half said leave policies had made workplace culture better.D) The US is one of only three countries in the world not to offer statutory (法定的) paid leave, but increasingly states and companies are starting to take up the issue. So far, eight states and the District of Columbia have their own paid family leave laws.E) Brad Harrington, executive director of the center and lead author of the study, estimates only 20% to 30% of companies in the US offer paid parental leave. He feels the research findings reflect an obvious change in corporate attitudes to new fathers taking time off.F) “We did a study on paternity leave five years ago. Compared with those findings, these numbers were shocking to me. I did not expect 80% of people to say the organisation finds dads taking this leave acceptable and three quarters to say it's equally supportive of women and men taking leave," Harrington said.G) The previous study found that nearly three-quarters of fathers saw two to four weeks as an appropriate duration for paternity leave and 76% said they would prefer not to take all their time off at once.H) Since then, there have been a number of legal cases against companies involving paternity leave—including cases against JPMorgan Chase and Estee Lauder—which have helped put pressure on companies to make their parental leave policies gender neutral.I) However, the study also shows how traditional gender roles endure both at work, where more women than men reported changes in their perceived career potential, and at home-even among workers who claim to have a strong desire for equality.J) The vast majority of men, 97%, said one of the top reasons to take leave was to share caregiving with their partner. But when they were asked about how caregiving and household tasks were divided, their answers painted a different picture. While about 75% of employees said both genders should give the same amount of care, the majority of men and nearly half of women admitted that in reality the female actually did most of it. A tiny fraction, 2%, of men said they did more of the childcare.K) Men and women's experiences of the return to work following parental leave were also considerably different. Of the women surveyed, 32% reported a downturn in their job satisfaction, while 14% said it increased. In comparison, 17% of men said their job satisfaction went down and 20% said it went up. Meanwhile, more women reported an increase in their responsibilities and manager expectations after childbirth. Half of the women said they used flexible work arrangements after becoming a parent, while just 27% of men did. Similar percentages of men and women said they enjoyed their careers and that it gave them a sense of achievement, while around half of women and 44 of men said it was a key part of their identity.L) On the subject of career advancement, 59% of women and 49% of men said leave could be limiting and both genders said they feared it would have an impact on their progress long-term. But on opportunity for promotion, more than double the number of women, 30% compared with 15% of men, believed their chances to be lower after becoming a parent. Despite progress, thestruggle for women to reach the highest positions of power is demonstrated in this year's Fortune 500 list, which featured a record 33 female CEOs, but this still represents a tiny fraction of the total.M) Harrington said culture change depends on companies putting more focus on men and their responsibilities. “By that I mean companies need to give men paternity leave and encourage men to take time off to be with their kids early on in the kids' life. They also need to recognise that men have to make significant adjustments when they become parents. Companies cannot do all these things to enhance women's advancement and then turn around and say, 'Oh, but we don't expect the men to take over for the women at home.’"N) In May, the American Civil Liberties Union (ACLU) and Outten & Golden LLP announced a historic class action $5m settlement with JPMorgan Chase on behalf of male employees who claim they were illegally denied access to paid parental leave. Derek Rotondo, 35, filed the discrimination charge against his company after he was allegedly told by his HR department that mothers were considered primary caregivers. Thus, they were allowed to take 16 weeks of paid parental leave. Fathers, however, could take just two weeks.O) The father of two from Columbus, Ohio, who still works at the company as an associate and investigator, said he has witnessed a “domino effect (多米诺效应)” across companies since the settlement, but that there is still substantial progress to be made towards changing attitudes towards paternity leave.P) “I do think there's still some way to go...there's still going to be sort of the unstated expectation for new dads to essentially come right back to work, but I think the research is showing that's starting to change." He said equal parental leave is an essential component to creating gender equality in the workplace. “The old standard of women staying home, having babies and cooking doesn't apply and hasn't applied for a long time."36. In the absence of Federal legislation, some states in the US have passed laws concerning paid family leave.37. Most fathers admitted that even during their paternity leave they actually did much less childcare than the mother.38. According to one father, equal parental leave is indispensable to achieving gender equality in the workplace.39. One survey indicated there is now less objection to paternity leave.40. Compared to five years ago, according to one researcher, many more people said their organisation gave the same support to men and women taking parental leave.41. One study finds that even workers who claim to desire gender equality stick to traditional gender roles both at work and at home.42. The majority of workers surveyed said parental leave policies had improved workplace culture.43. In spite of progress, the number of women in top positions of big companies remains extremely small.44. According to one estimate, less than one third of companies in the US provide paid parental leave.45. A number of lawsuits have pressured companies to formulate gender neutral policies on parental leave.Section CDirections: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.Passage OneQuestions 46 to 50 are based on the following passage.Having a rival can keep you committed to achieving your goals and enhance your overall performance. But before you go out and find an entrepreneur to outcompete, it's important to understand and avoid the traps that often come with rivalry. After all, competitive rivalry can also hinder effective decision-making and increase your willingness to take risks, behaviors that can ultimately hurt your venture's success.Finding someone you're committed to outcompeting can be a great way to stay focused on your goals and push your venture to the next level. But when you're intently focused on outperforming your rivals, you may begin to develop a “win-at-all-costs" mentality that causes you to ignore how you achieve success. One group of researchers, for example, examined the link between rivalry and unethical behavior. They found that when people compete against their rivals, they are more willing to behave unethically to win. But such behavior may stain your reputation and strain relationships important to your success. One way to avoid this trap is to stop and reflect on what's important. While outperforming your rivals may provide short-term benefits, the loss of your integrity will have long-term consequences.One reason having a rival can enhance your venture's performance is that it creates a level of excitement that drives you to work harder. But this eagerness to win may also hurt your venture's success, particularly when it causes you to make impulsive, insensible decisions. But it's possible to avoid such costly mistakes by making a habit of engaging in critical thinking, such as considering opposing viewpoints and conducting cost-benefit analyses, especially for those decisions that are complex and can determine the future of your venture.The sense of eagerness that comes with having a rival can not only cause you to make poorer decisions, but it can also lead you to take greater risks that put your venture in peril. One way you can overcome the risk-inducing effects of rivalry that stand to endanger your venture's success is to remain attentive to your emotional state and actively monitor how such feelings are affecting your decision-making.46. How can competitive rivalry benefit entrepreneurs according to the passage?A) By enabling them to outcompete other entrepreneurs.B) By enabling them to make their venture a success.C) By helping them to reach long-term goals.D) By helping them to stay goal-oriented.47. What is one of the traps entrepreneurs may often fall into when competing with rivals?A) They may adopt strategies that are bound to ruin their venture.B) They may resort to unethical means to outperform their rivals.C) They may be too eager to succeed while ignoring the huge labor cost.D) They may be intently focused on winning at the current market level.48. What are entrepreneurs advised to do to avoid traps that often accompany rivalry?A) Deliberate on what really matters. C) Estimate the long-term consequences.B) Prioritize reaping immediate benefits. D) Reflect on what successes are achievable.49. How can entrepreneurs avoid making impulsive and insensible decisions?A) By engaging themselves in critical reasoning.B) By developing a habit of keeping their integrity.C) By criticizing themselves for previous poor performances.D) By refraining from being too excited about their successes.50. How can entrepreneurs overcome the risk-inducing effects of rivalry?A) By paying close attention to their current performance.B) By taking steps that stand to endanger their rivals' success.C) By monitoring how their decision-making impacts their mentality.D) By keeping their emotions in check to avoid making poor decisions.Passage TwoQuestions 51 to 55 are based on the following passage.A multitasker is one who can perform two or more tasks effectively at the same time, which —apart from the obvious differences—is similar to what a computer does. The concept does indeed come from the realms of technology, where it is used to refer to an operating system that can execute multiple tasks at the same time. However, the question is: can a person really be a multitasker?For most scientists, the answer is no. So much so that, according to experts in neuroscience (神经系统科学), our brains do not handle multitasking situations well. As soon as two tasks require our attention, productivity suffers. What we call multitasking, therefore, is in reality the ability to move more or less quickly from one task to another. This requires two essential conditions: that one of the tasks needs to be automatic, like walking on eating, and that they both need different mental processes. Answering the phone and writing at the same time, for example.However, on the other side of the coin there are people who maintain that it is possible to be, or at least seem to be, multitasking. A recent study concluded that regardless of whether people are actually handling several tasks or not, the mere fact that they perceive this activity as multitasking has a positive effect on their performance.The business perspective offers a different view: multitasking is understood as the ability to adapt to all types of environment within a company and effectively undertake different activities within a set time frame. Indeed, many companies loo for people who are skilled in multitasking to improve their productivity. From this different perspective, you can not only be multitasking but this ability can also be taught: something that is easier in fluid organisations, which favour flexibility in their working practices.The benefits of multitasking are clear. Being quicker and more efficient increases our performance and the number of tasks completed. But having to pay attention to several things at once means that the powers of concentration are reduced and that can lead to more mistakes.51. What does a“multitasker" originally refer to?A) An operating system capable of doing several tasks at once.B) A skilled worker executing more than one task at the same time.C) A sophisticated technology doing several tasks effectively at once.D). An efficient person able to perform multiple tasks at the same time.52. Why can't people really be multitaskers according to neuroscientists?A) They are not sufficiently exposed to multitasking situations.B) They are not comparable to mechanical operating systems.C) Their brains do not allow them to multitask.D) Their attention span cannot be expanded.53. What do we learn from the conclusion of a recent study on multitasking?A) People make greater achievements by maintaining whatever they are doing is multitasking.B) People's performance benefits from the perception of what they are doing as multitasking.C) People's active mental processes exert a positive effect on their multitasking.D) People can improve their capabilities by handling multitasking situations.54. How does the business world view multitasking?A) It is a rare skill often found in fluid organisations.B) It is an adaptable capability required of all workers.C) It is an essential quality many employees lack.D) It is a desirable ability that can be developed.55. What does the author imply we should do if we have to focus on some task and do it wel!?A) Work in a flexible way. C) Avoid multitasking.B) Learn from mistakes. D) Increase efficiency.Part IV Translation (30 minutes)Directions: For this par, you are allowed 30 minutes to translate a passage from Chinese into English. You should write your answer on Answer Sheet 2.改革开放以来,中国人的饮食( diet)发生了显著变化。

differenceindifference模型

differenceindifference模型

differenceindifference模型什么是"差异中的差异"模型,以及如何使用它评估政策效果?导言:在政策评估领域,差异中的差异模型(Difference-in-Differences Model,以下简称DID模型)是一种常用的计量经济学方法,用于评估政策改变对结果变量的影响。

该模型的主要思想是通过比较政策实施前后不同群体之间的差异来估计政策效果。

一、DID模型的基本框架1.1 面板数据DID模型使用面板数据,其中包含两个时间点(即政策实施前后)和两个或更多组被观察个体。

这样的数据结构允许我们比较群体之间的差异以及随时间的变化。

1.2 计算效应DID模型计算政策效应,即政策实施后结果变量的变化。

该效应是通过比较政策群体和对照群体之间的差异来估计的。

1.3 可行性假设DID模型基于一个重要的假设,即政策改变只影响到一个特定的群体,而不影响控制群体。

这个假设也被称为平行趋势假设,即两个群体在政策实施前的时间趋势是平行的。

二、DID模型的具体步骤2.1 确定政策实施时间首先,我们需要确定政策实施的时间点。

政策实施后的时间段将被称为“后期”,而政策实施前的时间段则被称为“基线期”。

2.2 选择对照群体其次,我们需要选择一个对照群体,用来比较政策群体的差异。

对照组应该与政策组在政策实施前的时间趋势上是平行的,这样才能满足平行趋势假设。

2.3 检验平行趋势假设在实际应用中,可以通过绘制政策组和对照组的结果变量随时间变化的趋势图来检验平行趋势假设。

如果两组的趋势大致平行,那么这个假设就是成立的。

2.4 估计效应在满足平行趋势假设的前提下,我们可以使用DID模型估计政策效应。

通常,我们会使用线性回归模型来估计效应。

2.5 控制变量在DID模型中,还需要考虑其他可能影响结果变量的因素。

我们通过引入一些控制变量来控制这些因素,以确保结果的准确性。

三、案例研究:DID模型的应用为了更好地理解DID模型的实际应用,我们以一个假设的案例研究来说明其步骤和过程。

中考英语人工智能的发展趋势与挑战分析单选题40题

中考英语人工智能的发展趋势与挑战分析单选题40题

中考英语人工智能的发展趋势与挑战分析单选题40题1.Artificial intelligence is playing an increasingly important role in various fields. It is expected to bring more _ to our lives.A.conveniencesB.difficultiesC.challengesD.problems答案:A。

本题考查名词辨析。

“conveniences”表示便利;“difficulties”表示困难;“challenges”表示挑战;“problems”表示问题。

人工智能在各个领域发挥着越来越重要的作用,预计会给我们的生活带来更多便利。

2.With the development of artificial intelligence, more and more _ jobs will be replaced.A.manualB.creativeC.managerialD.professional答案:A。

本题考查形容词辨析。

“manual”表示手工的;“creative”表示有创造力的;“managerial”表示管理的;“professional”表示专业的。

随着人工智能的发展,越来越多的手工工作将被取代。

3.Artificial intelligence is _ changing the way we live and work.A.rapidlyB.slowlyC.hardlyD.never答案:A。

本题考查副词辨析。

“rapidly”表示迅速地;“slowly”表示慢慢地;“hardly”表示几乎不;“never”表示从不。

人工智能正在迅速改变我们的生活和工作方式。

4.The future of artificial intelligence lies in its ability to _ with humans.A.cooperatepeteC.fightD.argue答案:A。

高三英语未来科技发展趋势探讨单选题20题

高三英语未来科技发展趋势探讨单选题20题

高三英语未来科技发展趋势探讨单选题20题1. The rapid development of artificial intelligence has brought about ________ changes in various fields.A. tremendousB. slightC. rareD. common答案:A。

本题考查形容词词义辨析。

“tremendous”意为“巨大的”,符合人工智能快速发展带来巨大变化的语境。

“slight”表示“轻微的”,与语境不符;“rare”指“罕见的”;“common”是“常见的”,都不符合题意。

2. Future technologies are expected to ________ many challenges in improving people's lives.A. overcomeB. avoidC. createD. ignore答案:A。

“overcome”有“克服”的意思,未来科技有望克服很多挑战来改善人们的生活。

“avoid”是“避免”;“create”是“创造”;“ignore”是“忽视”,都不符合句意。

3. The new energy vehicle industry is experiencing a ________ growth due to technological innovations.A. stableB. slowC. rapidD. random答案:C。

“rapid”表示“快速的”,新能源汽车行业由于技术创新正在经历快速增长。

“stable”是“稳定的”;“slow”是“缓慢的”;“random”是“随机的”,都不符合行业现状。

4. Smart home devices have become increasingly ________ in modern households.A. popularB. unpopularC. normalD. abnormal答案:A。

指南中关于看待问题不同角度的指标

指南中关于看待问题不同角度的指标

指南中关于看待问题不同角度的指标英文回答:When it comes to looking at a problem from different perspectives, there are several indicators that can be helpful. These indicators can help us gain a more comprehensive understanding of the problem and potentially find more effective solutions. Here are two key indicatorsto consider:1. Stakeholder Analysis: One important aspect oflooking at a problem from different angles is consideringthe perspectives of various stakeholders involved.Different stakeholders may have different interests, needs, and concerns related to the problem. Conducting a stakeholder analysis can help identify these different perspectives and understand how they may influence the problem and its potential solutions. By considering the viewpoints of all relevant stakeholders, we can ensure a more inclusive and well-rounded approach to problem-solving.2. Risk Assessment: Another indicator to consider when examining a problem from multiple angles is conducting a risk assessment. This involves identifying potential risks and uncertainties associated with the problem and its proposed solutions. By considering different scenarios and potential outcomes, we can evaluate the potential risks and benefits of each perspective. This allows us to make more informed decisions and develop strategies that mitigate risks and maximize benefits.By utilizing these indicators, we can gain a more comprehensive understanding of the problem and explore a wider range of potential solutions. It helps us avoid narrow-mindedness and encourages us to consider different viewpoints, leading to more effective problem-solving.中文回答:在看待问题时,从不同角度考虑有几个指标可以帮助我们。

财务分析与证券定价(英文)chapter3

财务分析与证券定价(英文)chapter3

Location of prices
1. Cross-sectional Arbitrage Different prices for the same commodity at the same point in time 2. Intertemporal Arbitrage Different prices for the same commodity at different points in time
Types of Arbitrage
Risk
1. Pure (Risk-Free) Arbitrage You get something for nothing, for sure 2. Expectational Arbitrage You have a better chance of an abnormal return than not
The Structure of Investment Returns
For a terminal investment:
I0 Initial Investment 1 0 CF 1 CF2 CF 3 CF T-1 CF T 2 3 T-1 T Terminal Cash Flow Investment Horizon: T
PART I
Investment Returns, Equity Value, and Financial Statements
Gaining the Understanding to do Fundamental Analysis
Chapter 3 Understanding investment returns and how analysts’ styles are determined by their approach to forecasting returns

双重差分法的平行趋势假定

双重差分法的平行趋势假定

双重差分法的平⾏趋势假定Prof. Orley Ashenfelter, architect of modern labor economics, former AEA president双重差分法是估计处理效应的常见⽅法,但也有被滥⽤的倾向,因为有些应⽤者对于双重差分法的优点与局限缺乏了解,特别是其潜在的平⾏趋势(parallel trend)假定……差分法的局限经济学家常关⼼某政策实施后的效应,⽐如对于收⼊( y )的作⽤。

最简单(天真)的做法是⽐较处理组(即受政策影响的地区或个体)的前后差异,⽐如这称为“差分估计量”(difference estimator),即将处理组(treatment group)政策实施后的样本均值,减去政策实施前的样本均值。

然⽽,由于宏观经济环境也随时间⽽变(时间效应),故政策实施地区的前后差异未必就是处理效应(treatment effects)。

双重差分法的反事实逻辑为了解决差分法的局限性,常⽤⽅法是寻找适当的控制组(control group),即未实施政策的地区(或未参加项⽬的个体),作为处理组的反事实(counterfactual)参照系。

具体来说,可将未受政策影响的控制组之前后变化视为纯粹的时间效应,即综合以上两个差分,即将处理组的前后变化减去控制组的前后变化,可得到对于政策处理效应更为可靠的估计:(1)这就是所谓的双重差分估计量(Difference in Differences,简记DD或DID),因为它是处理组差分与控制组差分之差。

该法最早由 Ashenfelter(1978)引⼊经济学,⽽国内最早的应⽤或为周黎安、陈烨(2005)。

从以上推理可知,DID的反事实逻辑能够成⽴,其基本前提是,处理组如果未受到政策⼲预,其时间效应或趋势应与控制组⼀样(故可以后者来控制时间效应),这就是所谓的 “平⾏趋势”(parallel trend)或 “共同趋势”(common trend)假定。

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Differences in Turnover Predictors between Multilevel and Single Level Direct Selling OrganizationsTHOMAS R.WOTRUBA *,STEWART BRODIE **&JOHN STANWORTH ***San Diego State University,San Diego,CA,USA,**Westminster Business School,University of Westminster,London,UKA BSTRACT Turnover among its salespeople is a significant issue for direct selling firms because attrition impacts the size and continuity of revenue generation by a firm’s sales force.While turn-over rates in direct selling are high overall,turnover rates and intentions to quit differ significantly between multilevel (ML)and single level (SL)forms of direct selling organizations.This study examines whether specific demographic and behavioural/attitudinal characteristics of direct sales-people correspond to differences in turnover between ML and SL salespeople.For many demo-graphic variables there are significant differences between ML and SL salespeople,but none of these differences correspond to differences in quitting intentions.There are also significant differ-ences between ML and SL salespeople on the behavioural and attitudinal variables studied.Ana-lysis revealed that the relationship between some of these variables and quitting intentions differed substantially between ML and SL salespeople.These variables included job satisfaction,organi-zational commitment,perceived image of direct selling in the marketplace,and the importance of the job characteristics of work rewards and career growth.Specific managerial implications fol-low from these findings.K EY W ORDS :Direct selling,organization,single level,multilevel,turnover,quittingBackground:Turnover and Direct SellingTurnover is often used synonymously with quitting or attrition.It involves the severing of employment relationships between an organization and its employee(s).It often (but not always)leads to the need for the organization to replace the person who has left his or her job with a new person so that the job will continue to be performed.Direct selling is a method of distribution of consumer goods and services through personal contact between buyer and seller away from a fixed business location (Peterson &Wotruba 1996).Turnover is a somewhat unique occurrence in direct selling as compared with other jobs,even with other selling jobs,since there is no formal quitting procedure by the direct salesperson or official notice of employmentCorrespondence Address:Stewart Brodie,Westminster Business School,University of Westminster,35Marylebone Rd,London NW15LS,UK.Tel.:+44(0)2079115000ext.3036;Fax:+44(0)2079115839;Email:brodies@ Int.Rev.of Retail,Distribution and Consumer Research,Vol.15,No.1,91–110,January 2005ISSN 0959-3969Print/1466-4402Online/05/010091-20#2005Taylor &Francis LtdDOI:10.1080/095939604200029914892T.R.Wotruba et al.termination by the company.Direct salespeople are self-employed independent contractors,not company employees,and in that sense direct selling has some char-acteristics in common with franchising(Brodie et al.,2002b;Stanworth et al., 2004).As independent contractors,direct selling activity is discretionary to many in that position,and many direct salespeople will cycle periodically from little or no activity to high levels of activity.Temporary inactivity does not always portend quitting,though many direct sellingfirms specify some length of inactivity as a likely indicator of turnover.In general,a direct sellingfirm will welcome back an inactive direct salesperson who chooses to become active once again.As independent contractors,direct salespeople are essentially their own bosses. They are free to spend whatever time they want as they seefit.Many participate in direct selling as a part-time activity,or as a supplement to other employment commitments,or as a temporary means for income until another employment opportunity is found.Maintaining direct selling activity requires considerable initia-tive and self-motivation(Pratt&Rosa,2003).Financial compensation depends essentially on commission or incentive pay since there are no salaries(Coughlan& Grayson,1998).For these reasons,inactivity among direct salespeople is common, and it is not unusual tofind annual turnover rates of100percent in the sales force of a typical direct selling company(Biggart,1989;Peterson&Wotruba,1996). Turnover can be anticipated by determining a salesperson’s‘intentions to quit’or‘propensity to quit’.These terms have been used as the basis for measures designed to predict inactivity or quitting behaviour among direct salespeople as well as others in various occupations.Numerous studies of turnover exist,and there is considerable evidence that measures of intentions to quit are accurate predictors of turnover or permanent inactivity(Porter&Steers,1973;Price,1977; Muchinsky&Morrow,1980;Bluedorn,1982;Steel&Ovalle,1984).Studies speci-fically of salespeople reinforce this pattern(Donnelly&Ivancevich,1975;Busch& Bush,1978;Parasuraman&Futrell,1983),and further studies involving direct salespeople specifically confirm thesefindings(Wotruba,1989,1990;Wotruba& Tyagi,1991,1992).Many of these studies have also succeeded in identifying the links between turnover or intentions to quit and other behavioural or attitudinal variables such as job satisfaction,organizational commitment,and met expecta-tions.Strong evidence has been presented to show that measures of intentions to quit are more direct causal antecedents of turnover than are the behavioural or attitudinal variables mentioned.Thus,turnover is a significant issue for direct sellingfirms because it impacts the size and continuity of the sales force producing thefirm’s revenues.An under-standing of the antecedents of turnover can help management devise programmes and practices that could reduce turnover if properly implemented.But for such programmes and practices to be most effective,they mustfit the nature of the organization and its workers.Direct sellingfirms operate under two major types of organizational structures, called multilevel and single level.In a multilevel(ML)organization,direct sales-people recruit,train and supervise other direct salespeople who become part of the recruiter’s downline and whose sales generate compensation for the recruiter.In a single level(SL)organization,salespeople do not build an organization via recruit-ing and training but rather devote all efforts to selling and achieve allTurnover Predictors in Direct Selling93 compensation based on their own sales.Recent evidence shows that salespeople in these two types of direct sellingfirms have some specific differences in personal characteristics,attitudes and behavioural measures.For instance,MLs show significantly greater organizational commitment than do SLs while SLs place greater importance on job characteristics that involve proving themselves to others when compared with MLs(Brodie et al.,2002a).This raises two important ques-tions:(1)Does turnover or intentions to quit differ between these two types of direct sellingfirms;and if so(2)are these attrition measures linked differently in ML versus SL organizations to attitudes or behaviours previously determined to precede turnover among direct sellingfirms in general.We address these questions as the focus of this study in a series of analysis stages,using thefindings in each stage to provide direction for analysis in subsequent stages.Because of the somewhat intricate nature of turnover in direct selling–invol-ving both permanent and temporary inactivity as well as the propensity to quit–the measure of turnover used successfully in previous studies is used here as well. Turnover is measured from a single scale incorporating both quitting and inten-tions to quit,so that answers can be obtained from respondents who had already quit and others who were still active but in various stages of intending to quit. That scale was framed as the following question,and generated the results indi-cated when posed to a sample of direct salespeople in theirfirst few months of activity:Which of these statements best describes your feelingsright now about continuing your direct selling activity?I have never thought about quitting.53.0%I seldom think of quitting.23.8I sometimes think of quitting.15.1I frequently think of quitting. 3.3I am just about ready to quit. 3.1I am no longer active in this direct selling activity. 1.7Total(n=638)100.0%This sample included respondents provided from22member companies of the Direct Selling Association in the UK.Each co-operating company agreed to send a mail questionnaire to a sample of their salespeople with a cover letter from the researchers.Selection of companies was based on gaining adequate representation of ML and SL salespeople from a spectrum of companies that varied in size and product or service sold.Out of the722responses received from the4,050mailed questionnaires(response rate of18percent),49did not report their type of organi-zation and an additional35did not answer the question on intentions to quit,so these were excluded from the analysis.The proportions of respondents who could be categorized as ML or SL closely matched corresponding proportions available from the UK Direct Selling Association.For instance,a recent UK direct selling report(Direct Selling Association UK,2000)indicated that67.2percent of UK Direct Selling Association memberfirms were ML.Among respondents to this94T.R.Wotruba et al.study69.7percent of those who could be categorized were ML and30.3percent were SL(for more details,see Brodie et al.,2002a).Comparison of Turnover Between ML and SL Respondents.Among the638respondents in this study who reported their quitting intentions and could be identified as associated with an ML or SL direct selling organization, 438were ML and200were SL.While very few of these respondents had actually quit their direct selling activity,a substantial number had given at least some thought to quitting,hence had some degree of‘intention’or‘propensity’to quit. Their responses to the turnover question,tallied by type of organization,appear in Table1.These results indicate that MLs are significantly different from SLs in their intentions to quit.MLs have lesser and SLs have greater turnover propensity.This conclusion applies regardless of whether the difference is measured by a chi-square test comparing the distributions of responses on the six scale positions or by a t-test comparing the mean scale positions of the two respondent groups.Since MLs and SLs are significantly different in their turnover propensity,the next step is to identify what variables relate to this measure of turnover,and whether MLs and SLs differ on those variables.This analysis is donefirst for demographic and personal history variables and then for behavioural and attitudinal variables. Analysis of Turnover Related to Demographic and Personal History CategoriesBefore examining whether MLs and SLs differ on demographic characteristics,it is useful to determine whether there are any relationships within demographic categories and the turnover measure of intentions to quit.Perhaps turnover is significantly more(or less)likely within certain demographic categories regardless of whether a direct salesperson was an ML or an SL.In some cases,however,a turnover-demographic relationship may not occur for MLs and SLs combined, Table1.Intentions to quit:ML and SL respondents comparedML respondents SL respondents Scale value Statement No.%No.%1Never thought about quitting25257.58643.0 2Seldom think of quitting9922.65326.5 3Sometimes think of quitting5512.64120.5 4Frequently think of quitting15 3.46 3.0 5Just about ready to quit11 2.59 4.5 6No longer active6 1.45 2.5 Total438100.0200100.0 Notes:Chi square:14.932(degrees of freedom=5),p=0.011Mean scale position:ML=1.75SL=2.07Standard deviation: 1.11 1.25Significance of difference(t-test,2-tailed)p=0.001Turnover Predictors in Direct Selling95 but can occur for one group rather than the other because those groups differ demographically and those differences correspond to differences in propensity to quit.For this reason a demographic comparison of MLs and SLs is also necessary to indicate where these two groups differ demographically and whether such differences correspond to differences in intentions to quit.An examination of the638direct salespeople in this study(ML and SL combined)was done for each demographic and personal history variable in the study.A comparison among the categories in each variable on intentions to quit produced the results in Part A of Table2.These results show that in the tradi-tional demographic variables there is no significant difference among the categories of those variables on intentions to quit.In other words,regardless of age,gender,marital status,income,or other traditional demographic measures the direct salespersons in these categories did not differ significantly in their intentions to quit.But with two measures of respondents’personal history regarding their direct selling jobs,including number of hours worked per week and tenure on that job,there are significant differences among respondent cate-gories.Regarding hours worked per week,those working50or more hours per week show the greatest intentions to quit.When the tenure categories are compared,those with between4and10months of tenure likewise show the greatest intentions to quit.Comparing MLs and SLs on these personal history measures as well as on the demographic variables is the next step to determine whether there are differences between those two groups that might correspond with the difference between them in intentions to quit.Part B of Table2presents these comparisons.Only those respon-dents that provided an answer on intentions to quit are included in these tables. Based on these results,there are significant differences between ML and SL direct salespeople in age,education,income,type of housing,previous experience, and hours per week worked in direct selling.From an inspection of these results, it appears that MLs are older,have higher education and higher income,are more likely to live in owner-occupied or private-rented housing,are more likely to have work experience that did not involve selling,and spend fewer hours per week in direct selling in comparison with the SLs.There are no significant differences between MLs and SLs on gender,marital status,location of residence,and tenure with their direct selling company.Thus far the data show that intentions to quit is related to no demographic variable and only one personal history variable on which MLs and SLs differ–hours per week worked in direct selling.But it is possible that there are relation-ships between intentions to quit and personal history or demographic characteristics that are unique to MLs only or to SLs only,but not to both.This investigation is accomplished by use of a two-way analysis of variance.This analy-sis technique is illustrated using hours worked and type of direct selling organization simultaneously.As explained below,two-way analysis of variance indicates that intentions to quit is related independently to both hours worked and type of direct selling organization(that is,ML versus SL),but not to the interaction between hours worked and organization type.In other words,the effect of hours worked on turnover intentions is the same regardless of type of organization.Since SLs work more hours per week than MLs,and the number of96T.R.Wotruba et al.Table2.Part A:Intentions to quit compared among categories of demographic and personalhistory variablesPart B:Personal history variables compared between ML and SL respondentsPart A Part BIntention to quit%of ML%of SL Variables and categories n Mean S.D.respondents respondents AgeUnder186 1.500.5480.5 2.018–2488 1.89 1.07711.020.025–2992 1.710.97814.015.530–34121 1.72 1.06619.019.035–44171 1.87 1.21228.822.545–5499 2.05 1.32016.513.555–6446 2.07 1.3237.8 6.065+14 1.57 1.284 2.5 1.5 Total637 1.85 1.162n=437n=200 Significance*p=0.258p=0.027 EducationNo formal education67 1.600.9549.213.6 CSE/YT/RSA47 1.87 1.244 5.312.1 GSCE(grades A-C),GCE‘O’level156 1.92 1.17521.431.7 GCE‘A’level,BTEC,City&Guilds134 1.91 1.18620.722.1 Higher education,below degree level95 1.78 1.18717.79.0 BA,BSc degree,or equivalent81 1.78 1.00015.27.5 Post-graduate degree53 2.08 1.41210.4 4.0 Total633 1.85 1.165n=434n=199 Significance*p=0.350p=50.001 GenderFemale455 1.86 1.17470.573.0 Male183 1.81 1.13329.527.0 Total638 1.85 1.162n=438n=200 Significance*p=0.627p=0.296Marital StatusMarried363 1.87 1.18259.552.3 Living as married75 1.87 1.07010.315.1 Separated,divorced74 2.00 1.39510.813.6 Widowed6 1.170.4080.5 2.0 Single,never married110 1.75 1.02417.116.6 Other6 1.170.408 1.10.5 Total634 1.85 1.163n=435n=199 Significance*p=0.287p=0.113Annual Household IncomeUnder£8,00092 1.86 1.22812.422.0£8,000to£13,999107 1.81 1.13415.822.6£14,000to£21,999156 1.91 1.19324.529.6£22,000to£36,000145 1.91 1.14826.219.9 Over£36,00098 1.81 1.18121.1 5.9 Total598 1.87 1.172n=412n=186 Significance*p=0.924p=50.001 (continued)Turnover Predictors in Direct Selling97Table2.(continued)Part A Part BIntention to quit%of ML%of SL Variables and categories n Mean S.D.respondents respondents Location of residenceUrban196 1.91 1.24932.830.5 Suburban272 1.89 1.14644.145.5 Rural143 1.76 1.07423.124.1 Total611 1.87 1.164n=424n=187 Significance*p=0.463p=0.853Type of housingOwner-occupied402 1.86 1.14165.758.4 Private rented108 1.89 1.16318.314.2 Local authority rented61 1.70 1.070 6.915.7 Housing association35 1.97 1.445 4.67.6 Other28 1.82 1.362 4.6 4.1 Total634 1.85 1.164n=437n=197 Significance*p=0.832p=0.003 Previous experiencePrevious direct selling experience190 1.88 1.14629.931.0 Other self-employment86 1.81 1.22215.010.7 Other selling102 1.75 1.05013.921.3 Other non-selling195 1.83 1.13833.126.4 None56 2.11 1.4108.110.7 Total629 1.85 1.165n=432n=197 Significance*p=0.435p=0.049Hours per week workedLess than5193 2.12 1.44437.016.25–9219 1.730.97933.337.410–19112 1.68 1.01517.218.720–2946 1.670.7627.17.630–3924 1.67 1.007 2.5 6.640–4923 1.91 1.125 1.68.150or more16 2.31 1.401 1.1 5.6 Total633 1.85 1.164n=435n=198 Significance*p=0.003p=50.001 Tenure with direct selling companyLess than1month259 1.660.97340.940.01–3months158 1.82 1.14824.725.04–6months95 2.22 1.39316.212.57–9months16 2.50 1.461 2.1 3.510–12months9 1.67 1.0000.9 2.513–24months27 1.70 1.103 3.9 5.0 More than24months74 2.04 1.28711.412.0 Total638 1.85 1.162n=438n=200 Significance*p=50.001p=0.457Note:*Significance in Part A determined by analysis of variance.Significance in Part B determined by Pearson Chi Square.hours worked is positively related to turnover intentions(that is,the more hours worked,the greater the intention to quit),it follows that SLs will have greater intentions to quit.But among the MLs who work the most hours per week,their intentions to quit are likewise high.Of course,there might be other factors influ-encing the number of hours worked that are not considered here but that would also influence the propensity to quit.A further explanation of the components of this analysis of variance(Table3) is as follows.Corrected ModelThe sum of squares shows the amount of variability in the dependent variable (intentions to quit)that can be explained or attributed to all of the other variables or components specified(organization type,hours worked,and the interaction between them).Corrected TotalThe sum of squares shows the aggregate of how much the observed values differ from the mean of all the cases combined.It is‘corrected’because the mean is subtracted from each observed value before squaring the difference.The‘total’is the same calculation but without subtracting the mean before squaring the values. When the corrected model sum of squares is divided by the corrected total sum of squares,the result(0.058or5.8percent in this case)indicates what share of the variability in intentions to quit can be explained by the variables selected for analysis.This calculation also produces the measure of R2.ErrorThis represents the combined variance within the groups analysed.In this case there are14groups(2organization types67hours worked categories).These values from each group are then summed and divided by the total number ofponents of analysis of varianceSource Sum ofsquaresDegrees offreedomMeansquare F ratio SignificanceCorrected model49.29613 3.792 2.90750.001 Intercept808.4531808.453619.85950.001 Organizational type9.33119.3317.1540.008 Hours worked25.2006 4.200 3.2200.004 Interaction 2.17260.3620.2780.948 (Organizational type6hours worked)Error807.333619Total3034.000633Corrected total856.62963298T.R.Wotruba et al.Turnover Predictors in Direct Selling99 degrees of freedom in all groups combined.The resulting mean square is the aver-age of the variances from each of the analysis groups.Organization Type,Hours Worked and InteractionThese are the analysis groups or variables being tested.The mean square in each is compared with the error mean square to test the null hypothesis that the varia-bility is the same among the means in each analysis group.The measure F is the ratio from this comparison and the significance is the probability of how often such a difference or F-ratio can occur if the true ratio in the populations repre-sented is1.For example,if the variability in intentions to quit was the same in the populations of both organization types,how often would we draw a sample of both organization types with the variability measures obtained?The table indicates it would happen with p=0.008or very rarely.Hence,the null hypothesis of no difference is rejected and it is concluded that the two organization types differ in their intentions to quit.We have seen this already in Table1.InterceptThe intercept is sometimes interpreted as a surrogate for other unknown or unidentified variables not included in the analysis that might be significant if they were included.The significance of the intercept suggests that there are other vari-ables that would help explain the variance represented by the error term.The data also show that MLs and SLs differ onfive other demographic vari-ables that,when examined for all direct salespeople combined,are not related to intentions to quit.It is possible,however,that one or more of these variables might relate to quitting intentions for one or the other group–MLs or SLs–because those two groups differ on those variables.To examine this possibility a two-way analysis of variance was performed for thosefive demographic variables, and those results are shown in summary form in Table4.These results all indicate that there is no interaction between organization type and any of the demographics in the explanation of intentions to quit.In other words,within demographic categories,there are no instances where the pattern of intentions to quit is different for one organization type than for the other.The overall conclusion from this analysis of demographic and personal history variables is that the difference in intentions to quit between MLs and SLs is not explained by any pattern of demographic or personal history characteristics unique to either group.While these two groups of direct salespersons do differ on demographic and personal history characteristics,those differences do not explain the difference between the two groups in their intentions to quit.Analysis of Turnover Related to Behavioural and Attitudinal VariablesThe previous analysis on demographic and personal history variables is now repeated with regard to behavioural and attitudinal variables.The eight variables chosen for this analysis are those used in a prior comparison of ML and SL salespeo-ple(Brodie et al.,2002a).These include a nine-item job satisfaction(JOBSAT)scale100T.R.Wotruba et al.Table4.Analysis of variance results relating demographic and personal history variables toorganization type(ML and SL)Analysis and variables p=SignificantAge0.139No Organization type0.054Yes*Interaction0.255NoCorrected model***0.014YesEducation0.427No Organization type0.028YesInteraction0.566NoCorrected model***0.040YesIncome0.767No Organization type0.008YesInteraction0.768NoCorrected model***0.093Yes*Type of housing0.620No Organization type0.147No**Interaction0.354NoCorrected model***0.041YesPrevious experience0.281No Organization type0.001YesInteraction0.342NoCorrected model***0.036YesNotes:*Significant at p40.10.**If the non-significant interaction term is omitted and the analysis is re-run,organization type becomes significant(p=0.001).***Dependent variable: Intentions to quitbased on the job satisfaction subscales of the Job Diagnostic Survey(Hackman& Oldham,1974,1975),a15-item organizational commitment(ORGCOMIT)ques-tionnaire(Porter et al.,1974),a25-item met expectations(METEX)scale(Wotruba &Tyagi,1991),and a12-item image(IMAGE)scale assessing the respondents’impression of how people feel about direct selling and direct salespeople(Wotruba, 1990).In addition,four job characteristics scales are used resulting from a factor analysis of the26items used in previous studies(Wotruba&Tyagi1992)that produced four subscales.Respondents rated the importance of each item to them, and the four resulting subscales were labeled as follows:JOBCHAR1,‘‘Proving oneself to others’’;JOBCHAR2,‘‘Personal feelings of success’’;JOBCHAR3,‘‘Work rewards and career growth’’;and JOBCHAR4,‘‘My own boss,in control’’. Thefirst objective of this analysis is to determine whether the intentions to quit measure(ITQUIT)is related to each of the behavioural/attitudinal variables regardless of whether the salesperson was an ML or an SL.This is done by exam-ining correlations between ITQUIT and each of the behavioural/attitudinal constructs individually.The second objective is to establish whether MLs and SLs differ significantly on each of those attitudinal constructs.Both of these aims are accomplished in Table5.The first column of Table 5shows negative and significant correlations between ITQUIT and each of the eight constructs examined for all respondents combined.Thus,higher scores on each construct,such as JOBSAT,correlate with low scores on ITQUIT.Turnover propensity is therefore related to each of these eight beha-vioural/attitudinal variables when analysed separately or one at a time.This completes the first objective.Comparisons between the mean scores of MLs and SLs on each behavioural/attitudinal construct are also shown,together with a measure of significance of the difference between those means.The last column of the table indicates that these two salesperson groups differ significantly on only two of the eight constructs examined –ORGCOMIT and JOBCHAR1(see Brodie et al .(2002a)for descrip-tions of the components of these factors).Based on the mean scores,MLs exhibit higher organizational commitment than do SLs,but MLs attribute lesser impor-tance than do SLs on job characteristics 1(‘‘proving oneself to others’’).There are no significant differences in mean scores between MLs and SLs on JOBSAT,IMAGE,METEX,and the other three measures of job characteristics.This table also gives some additional information of interest.Since the eight constructs are compilations of individual scaled items as borrowed from previous studies,the reliability measure of each scale is reported (coefficient alpha).A coef-Table parison of means of behavioural and attitudinal constructs between ML and SLrespondents and correlations of those constructs with intentions to quitConstruct All ML and SLRespondentsML only SL only Difference in means between ML and SL*Job satisfaction mean:33.5333.7333.10p =0.18(9items;alpha =0.894)R :0.4930.4680.537p :mit.Mean:54.4255.2452.61p =0.001(15items;Alpha =0.899)R :0.5170.4640.592p :50.00150.00150.001Image of Dir.Sell.Mean:38.5738.5238.68P =0.78(12items;alpha =0.694)R :0.3060.3080.320p :50.00150.00150.001Met expectations Mean:79.7880.0779.15p =0.35(25items;alpha =0.884)R :0.4140.3860.474p :50.00150.00150.001Job Char.Factor 1Mean:34.0133.2935.68p =50.001(10items;alpha =0.893)R :0.2070.2140.273p :50.00150.00150.001Job Char.Factor 2Mean:27.1927.1827.22p =0.91(7items;alpha =0.866)R :0.2330.2050.307p :50.00150.00150.001Job Char.Factor 3mean:19.4219.4219.44p =0.94(5items;alpha =0.800)R :0.1220.1370.092p :0.0020.0050.202Job Char.Factor 4Mean:11.5811.5411.66p =0.45(3items;Alpha =0.560)R :0.1450.1440.166p :50.0010.0030.020Notes :*Two-tailed probabilities,based on t-tests。

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