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博士 presentation模板-概述说明以及解释

博士presentation模板-范文模板及概述示例1:Title: Doctoral Presentation TemplateIntroduction:Presenting your doctoral research is a crucial step in the completion of your studies. A well-designed presentation template can help you effectively communicate your findings and research to your audience. In this article, we will discuss the key features of a doctoral presentation template and provide tips on how to create a professional and engaging presentation.Key Features of a Doctoral Presentation Template:1. Title Slide: The first slide of your presentation should include the title of your research project, your name, and the date of the presentation.2. Agenda Slide: A slide outlining the key sections or topics thatwill be covered in your presentation can help keep your audience engaged and informed.3. Introduction Slide: Use this slide to provide background information on your research topic and clearly state your research question and objectives.4. Methodology Slide: Present a summary of the research methods and techniques you used in your study, including any data collection and analysis methods.5. Results Slide: Highlight the key findings of your research and present any data or statistics that support your conclusions.6. Discussion Slide: Use this slide to interpret your results, discuss the implications of your findings, and address any limitations or challenges you encountered during your research.7. Conclusion Slide: Summarize your key findings and provide a clear takeaway message for your audience.8. Future Research Slide: Share any future research directions oropportunities for further study in your field.Tips for Creating a Professional Presentation:1. Use a clean and consistent design for your slides, incorporating charts, graphs, and visuals to enhance your presentation.2. Practice your presentation multiple times to ensure smooth delivery and familiarity with your content.3. Engage your audience by maintaining eye contact, speaking clearly and confidently, and allowing time for questions and discussion.4. Keep your presentation focused and concise, avoiding unnecessary jargon or technical language that may be confusing to your audience.5. End your presentation with a strong conclusion that summarizes your key points and leaves a lasting impression on your audience.By following these tips and incorporating the key features of a doctoral presentation template, you can create a professional and engaging presentation that effectively communicates your research findings and contributes to the advancement of knowledge in your field. Good luck with your presentation!示例2:博士presentation是博士生在进行学术演讲时使用的模板，用来展示他们的研究成果和思想。

presentation开场白

presentation开场白篇一：presentation开场白Hello everyoneTonight our group will do the presentation about the organic products in Japan. I want to introduce our group members first…..Here we can see some vocabularies which are related to the case.……………Now let’s look at the flow chart ,from this flow chart we can see the trade and issues which are related to the trade between Sokensha and Devexco. Sokensha and Devexco started to do business in 2021 and they have good business relationship. Sokensha had never experienced the problems with the quality of the products from Australia and they have never experience the discrepencies in analysis results between Australia and Japan.In order to ensure the the products from Australia compiled with the Japanese organic standards , the products will be tested in JFAC before payment. Before shipment Devexco also conduct its own analysis with Amdel Ltd to meet the Japanese organic standards.In december 2021, Devexco shipped organic products to Japan, this shipment was the first to Sokensha since the JAS wasissued. As usual the sample of products was sent to JFAC, and JFAC found BHA in the sample at a level above the specification. Sokensha noticed Devexco two days after the agreednotification period. Devexco assumed that the tests conducted by Amdel were wrong and ask Amdel to conduct the test again. But Amdel found nothing wrong in the sample test. Devexco requested a copy of JAFC’s methodology and equipment for Amdel to retest on an equivalent testing level. The request was denied. Devexco asked Sokensha to choose six randomsamples of the products for testing. Six samples had six different results. This clearly proved the inconsistency in the JFAC’s testing. But Sokensha still refused to accept the shipment, because Sohkensha was fear of the possible retribution by Jp Gov. share the cost. Devexco didn’t want to give up and had to find a solution in order to have a strong business relationship. Work together. But Devexcostill have the feeling of uncertainty that the outcome will be undisputable again in the future.篇二：presentation开场白、结束语成功英语演讲的秘诀：开场白、结束语应对问题-I will be pleased to answer any questions you may have at the end of the presentation.-Please can you save your questions till the end? -If you have any questions, I will be pleased to answer them at the end of the presentation.-there will be time at the end of the presentation to answer your questions-so please feel free to ask me anything then.-Don't hesitate to interrupt if you have a question.-Please feel free to interrupt me at any time.-Please stop me if you have any questions.-If you need clarification on any point, you're welcome to ask questions at any time.-Can I come back to that point later?-I will be coming to that point in a minute.-That's a tricky question.-We will go into details later. But just to give you an idea of...-I am afraid there's no easy answer to that one...-Yes, that's a very good point.-Perhaps we could leave that point until the questions at the end of the presentation-I think I said that I would answer questions at the end of the presentation---perhaps you wouldn't mind waiting until then.-I think we have time for just one more question欢迎听众(正式)- Welcome to our company- I am pleased to be able to welcome you to our company...- I'd like to thank you for coming.- May I take this opportunity of thanking you for coming欢迎听众(非正式 )- I'm glad you could all get here...- I'm glad to see so many people here.- It's great to be back here.- Hello again everybody. Thank you for being ontime/making the effort to come today.- Welcome to X Part II.受邀请在会议上致词- I am delighted/pleased/glad to have the opportunity to present/of making this presentati - I am grateful for the opportunity to present...- I'd like to thank you for inviting/asking me/giving me the chance to...- Good morning/afternoon/evening ladies and gentleman- It's my pleasant duty today to...- I've been asked to...告知演讲的话题- the subject of my presentation is...- I shall be speaking today about...- My presentation concerns...- Today's topic is...- Today we are here to give a presentation- Today we are here to talk about...Before we start, I'd like you meet my team members...- A brief look at today's agenda...(告诉听众所再说内容先后顺序的先后顺序)- Before we start our presentation, let's take a brief look at the agenda...- I shall be offering a brief analysis of...- the main area that I intend to cover in this presentation is...- Take a moment and think of...- Thank you for giving me the opportunity to tell you about...告诉听众质询的长度- During the next ten minutes, I shall...- I shall be speaking for about ten minutes...- My presentation will last for about ten minutes...- I won't take up more than ten minutes of your time...- I don't intend to speak for longer than ten minutes...- I know that time is short, so I intend to keep this brief- I have a lot to cram in to the next ten minutes, so I'd better make a start...- I shall only take …minutes of your time.- I plan to be brief.- This should only last …minutes.引起听众的兴趣- I'm going to be speaking about something that isvitally important to all of us.- My presentation will help solve a problem that has puzzled people for years...- At the end of this presentation you will understand why this company has been so successful for so long... - I am going to be talking about a product that could double your profit margins...- the next ten minutes will change your attitude to sales and marketing...- Over the next ten minutes you are going to hear about something that will change the way your companies operate...- By the end of this presentation you will know all there is to know about...告诉听众文本要点- there are five main aspects to this topic (...thefirst, ... the second, ...a third, ...another, ... the final) - I am going to examine these topics in the following order (...first, ...next, ...after that, ...finally)- I've divided my talk into five parts...- I will deal with these topics in chronological order...- I'm going to start with a general overview and then focus on this particular problem (...in general, re particularly).- I want to start with this particular topic, and then draw some more general conclusions from it(...specifically, ... in a wider context).- there are (a number of) factors that may affect...- We have to take into at in any discussion of this subject, the following considerations.- We all ought to be aware of the following points.-The subject can be looked at under the following headings:….-We can break this area down into the following fields:-First/First of all…-Secondly/then/next…-Thirdly/and then we come to…结束语-In conclusion, I'd like to...-I'd like to finish by...- Finally/lastly/last of all….-By way of conclusi-I hope I have made myself understood-I hope you have found this useful-I hope this has given you some idea/clear idea/anoutline of...-Let me end by saying...-That, then was all I had to say-That concludes our presentati-I hope I've managed to give you a clearer picture of...-If there are any questions, I'd be delighted to...-Thank you for your attenti-Let's break for a coffee at this point-I am afraid that the clock is against us, so we had better stop here-You have been a very attentive audience---thank you回答问题I’d be glad to answer any questions at the end of the my talk.If you have any questions, please feel free to interrupt.Please interrupt me if there’s something which needs clarifying. Otherwise, there’ll be time for discussion at the endOpening Remarks开场： Sample Opening Remarks1) Thank you very much, Prof. Fawcett, for your very kind introduction. Mr. Chairman, Ladies andgentleman, Good morning! I consider it a great honor to be asked to speak about …on this session of our symposium.2) Ladies and gentlemen. It’s an honor to have the opportunity to address such a distinguished audience.3) Good morning. Let me start by saying just a few words about my own background. I started out in….4) Good afternoon and thank you for making the effort to be here with us today.5) Good morning, ladies and gentlemen. It’s a pleasure to be with you today.6) Mr. Chairman, thank you very much for your kind introduction. President, Distinguished colleagues,Ladies and gentleman, Good morning! Is my voice loud enough?7) Good morning, everyone. I appreciate the opportunity to be with you today. I am here to talk to youabout…8) Good morning, everyone. I am very happy to have this chance to give my presentation. Before I start myspeech, let me ask you a question. By a show of hands, how many of you own a car?9) I’d like to talk(to you) about….I’m going to present the recent…explain our position on…brief you on….inform you about…describe…10) The subject/focus/topic of my presentation….11) We are here today to decide…agree…learn about….12) The purpose of this talk is to update you onput you in the picture about…give you the background to…Expressing thanks to the Chairperson 向主持人致谢Mr. Chairman, thank you for your introduction.First, I would like to thank Mr. Chairman for his gracious introduction.Thank you very much, Prof. Fawcett, for your very kind introduction.I would like to thank Dr. Huang （主持人或推荐你来发言的上司）for permitting me the privilege to speak to this audience.Shifting to the Next Main PointThe next point I'd like to talk about is the feasibility of this project.That brings me to my second point.I am glad that we can now leave this rather boring subject of mathematic deduction and go into a more attractive one, that is the application of the formula.Resuming the TopicLet' s come back to what I said in the first part of my speech.Getting back to the subject of the problem of theoretical considerations we can find that...I want to return to the first part of my presentation.Now, to get back to the effect of temperature, you may be aware that the problems have been solved. This brings me back to the question of security.At this point I would like to refer again to the question of methods in the first part of my lecture.Referring again to the first question, I think...Referring to the Coming PointI'll deal with it later.I'll touch upon that point in a moment.I shall tell you in detail shortly.Others 细节，如确认话筒音量Can you hear me all right?Is my voice too loud?First I want to check if all of you can hear me clearly.Am I speaking clearly and loudly enough for those in the rear of the room?I wonder if those in the rear of the room can hear me.If those in the rear of the room can hear me, would someone please raise his hand?Can you hear me clearly?Can you hear me if I am away from the microphone?Is the microphone working?Reference to the Audience 与听众呼应I can see many of you are from …department.I know many of you are familiar with this topic.You all look as though you’ve heard this before.I understand that you’ve all traveled a long way./ After hours of conference, you must feel a little tired. Now I’d like you to see an interesting topic…Introducing the Subject and the outline of the Presentation引入话题 Background InformationI would like to start by briefly reviewing the history of open heart surgery.Let us start with the theoretical basis of this new technique.To begin with, we have to consider the principle.I think it would be best to start out by looking at a few slides.I should like to preface my remarks with a de script ion of the basic idea.May I begin with a general outline of this project?The first thing I would like to talk about is the definition of the terms I shall use in my lecture.The first point I'd like to make is the historical background of the invention.First, I shall explain to you why this new program is correct and feasible.Well, let's move on to the next point.We will now come to the second problem.Turning to the next question, I' 11 talk about the stages of the procedure.As the second topic, I shall stop here. Now let' s turn our attention to the third topic.So much for the methodology of our experiment. I would now like to shift to the discussion of the results. Now,let's move away from the first part and switch over to the next part of my presentation.That's all for the introduction and now we can go on to the literature review.Next, I would like to turn to a more difficult problem.篇三：Presentation_常见开场白与结束语Presentation 常用开场白与结束语应对问题-I will be pleased to answer any questions you may have at the end of the presentation. -Please can you save your questions till the end.-If you have any questions, I will be pleased to answer them at the end of the presentation.-there will be time at the end of the presentation to answer your questions-so please feel free to ask me anything then.-Don't hesitate to interrupt if you have a question.-Please feel free to interrupt me at any time.-Please stop me if you have any questions.-If you need clarification on any point, you're welcome to ask questions at any time. -Can I come back to that point later?-I will be coming to that point in a minute.-That's a tricky question.-We will go into details later. But just to give you an idea of...-I am afraid there's no easy answer to that one...-Yes, that's a very good point.-Perhaps we could leave that point until the questions at the end of the presentation -I think I said that I would answer questions at the end of the presentation---perhaps you wouldn't mind waiting until then. -I think we have time for just one more question欢迎听众（非正式）- I'm glad you could all get here...- I'm glad to see so many people here.- It's GREat to be back here.- Hello again everybody. Thank you for being ontime/making the effort to come today.- Welcome to X Part II.受邀请在会议上才致词- I am delighted/pleased/glad to have the opportunity to present/of making this presentati- I am grateful for the opportunity to present...- I'd like to thank you for inviting/asking me/giving me the chance to...- Good morning/afternoon/evening ladies and gentlemanCopyright? 2021 Institute of Management Atants. All rights reserved- It's my pleasant duty today to...- I've been asked to...告知演讲的话题- the subject of my presentation is...- I shall be speaking today about...- My presentation concerns...- Today's topic is...- Today we are here to give a presentation- Today we are here to talk about...Before we start, I'd like you meet my team members...- A brief look at today's agenda...(告诉听众所讲内容所讲的先后顺序)- Before we start our presentation, let's take a brief look at the agenda.- I shall be offering a brief analysis of...- the main area that I intend to cover in this presentation is...- Take a moment and think of...- Thank you for giving me the opportunity to tell you about...告诉听众发言的长度- During the next ten minutes, I shall...- I shall be speaking for about ten minutes...- My presentation will last for about ten minutes...- I won't take up more than ten minutes of your time...- I don't intend to speak for longer than ten minutes...- I know that time is short, so I intend to keep this brief- I have a lot to cram in to the next ten minutes, so I'd better make a start...引起听众的兴趣- I'm going to be speaking about something that isvitally important to all of us. - My presentation will help solve a problem that has puzzled people for years...- At the end of this presentation you will understand why this company has been so successful for so long...- I am going to be talking about a product that could double your profit margins... - the next ten minutes will change your attitude to sales and marketing...- Over the next ten minutes you are going to hear about something that will changeCopyright? 2021 Institute of Management Atants. Allrights reservedthe way your companies operate...- By the end of this presentation you will know all there is to know about...告诉听众内容要点- there are five main aspects to this topic (...thefirst, ... the second, ...athird, ...another, ... the final)- I am going to examine these topics in the following order (...first, ...next, ...after that, ...finally)- I've divided my talk into five parts...- I will deal with these topics in chronological order...- I'm going to start with a general overview and then focus on this particular problem (...in general, re particularly).- I want to start with this particular topic, and then draw some more generalconclusions from it (...specifically, ... in a wider context).- there are (a number of) factors that may affect...- We have to take into at in any discussion of this subject, the following considerations.- We all ought to be aware of the following points.结束语-In conclusion, I'd like to...-I'd like to finish by...-Finally...-By way of conclusi-I hope I have made myself understood-I hope you have found this useful-I hope this has given you some idea/clear idea/an outline of...-Let me end by saying...-That, then was all I had to say-That concludes our presentati-I hope I've managed to give you a clearer picture of...-If there are any questions, I'd be delighted to...-Thank you for your attenti-Let's break for a coffee at this point-I am afraid that the clock is against us, so we had better stop here-You have been a very attentive audience---thank you做presentation，我们要注意对话题的准备以及态度和身体语言等等，除此之外，我们还应该掌握一些常用词缀。

Presentation Skills

Presentation Skill
Step 1¡ £Develop Presentation Objectives
Objective Sa源自ples:- My objective of purpose is to convince director to increase our departments’ budget for 15%
Step 3. Main ideas leading to your objectives
Questions asked:

What ideas will best lead to my objective What your audience understand and accept if your presentation are to be achieved
Presentation Skill

Characteristics of an excellent presenter
- Enthusiastic - Organised
- Audience focused
- Flexible - Sense of humour - Appropriate body language - Appropriate vocabulary - Varied voice tone - Focus on purpose
Presentation Skill
Four criteria to judge a presentation
- Attention Getting - Memorable - Meaning - Activating
Presentation Skill
Discussion:

英文presentation一分钟范文

英文presentation一分钟范文Good afternoon, ladies and gentlemen. Today, I am here to give a presentation on the topic of the impact of technology on our daily lives.In today's modern world, technology plays a crucial role in our daily lives. From the moment we wake up to the time we go to bed, we are surrounded by various forms of technology. Our smartphones, laptops, tablets, and other devices have become an integral part of our lives, helping us to communicate, work, entertain ourselves, and stay informed.One of the biggest impacts of technology on our daily lives is in the way we communicate. With the rise of social media platforms and messaging apps, we can now connect with people from all over the world instantly. This has made it easier to stay in touch with friends and family, as well as to network and build relationships with others.Technology has also revolutionized the way we work. With the advent of remote working and digital tools, many people now have the flexibility to work from anywhere, at any time. This has not only made work more convenient, but has also increasedproductivity and efficiency for many individuals and organizations.In terms of entertainment, technology has opened up a whole new world of possibilities. With streaming services such as Netflix and Spotify, we can now access a vast library of movies, TV shows, music, and other content with just a few clicks. This has made it easier than ever to find and enjoy our favorite entertainment, anytime and anywhere.However, along with its many benefits, technology also comes with its challenges. The constant connectivity and information overload can lead to issues such as digital addiction, decreased attention spans, and the erosion of face-to-face communication skills. It is important for us to be mindful of the ways in which we use technology, and to find a balance that allows us to benefit from its advantages while mitigating its drawbacks.In conclusion, technology has had a profound impact on our daily lives, shaping the way we communicate, work, and entertain ourselves. It is up to us to harness the power of technology in a way that is positive and beneficial, both for ourselves and for society as a whole.Thank you for listening.。

Combined presentation AGM

•Review of H&I service provision in England –To ensure equity of access to high quality H&I services irrespective of geography, to support the aims of “Taking Organ Transplantation to 2020” –H&I Test List produced –Variation in procurement costs discussed
New BSHI Appointments 2016 BSHI President 2016-2020
Prof Steven Marsh
BSHI Chair Elect 2016-2017
Dr Andrea Harmer
BSHI Vacancies 2016
Ordinary Member –
1 position
Research Executive Members – 4 positions (possibly more)
BEB Chair Elect –
New position
Current and future activity
•Academy and National School of Healthcare Science –“One Voice” Programme BSHI is contributing £1.50 per active member towards this programme. –One Voice collectively represents Healthcare Scientists and is a preferred route for disseminating information and responses.

大学英语课前展示PPt

Interactive Design
Utilizing multimedia resources
In speeches, multimedia resources can be utilized to increase interactivity. For example, using tools such as PPT, video, audio, etc., to guide the audience to participate in discussions or answer questions by displaying pictures, playing audio or video, etc.
The theme should resource students to think creatively and Lately, promoting diversity thinking and creativity
The theme should be updated regularly to keep space with the latest developments in the field of English education, allowing students to gain a footprint in the front of knowledge
01
Theme selection
Theme scope
The theme should be closely related to college English learning, such as literature, culture, language skills, etc
The theme should cover a wide range of topics to allow students to gain a comprehensive understanding of the subject matter

presentation Krashen’s Monitor Model

A low or weak filter.
How to make students feel “at home”?
1.Teacher should smile, be energetic, emotional, relaxed and happy. 2. First class just for chatting. Tell the students something about yourself. 3.Adopt Interesting teaching methods. (1)Begin with warming up games. (2)listen English songs at the break.
Krashen’s Monitor Model
Natural order Monitor （监控假说）
（自然顺序假说）
Input
（输入假说）
Affective filter
Acquisitionlearning
(习得—学习假说）
(情感过滤假说）
Stephen Krashen’s model
The acquisition—learning hypothesis(习得-学习假说）
summary
1. Acquisition is more important than learning. 2. Two condition are necessary to acquisition.
Comprehensible input ,a bit beyond the acquirer’s current level.
(3)Ues the action, objects and pictures while teaching new content.

经典英语演讲开场白(精品多篇)

经典英语演讲开场白（精品多篇）英语演讲开场白篇一Good morning everybody!It's my honor to speak here,and I am very glad to share my topic with you. Then today I'd like to talk something about.。

.。

.（译文：大家早上好！能在这里做此次演讲我十分荣幸，也很高兴能跟大家一起分享我的主题，今天我想演讲的是……）Good evening, ladies and gentlemen, and wele to the English Speaking petition for Grade 某. （掌声） First of all, please allow me to introduce myself, your host for today. I’m Sam from Cla6, Grade 某.（译文：女士们，先生们，大家晚上好！欢迎来到05级英语演讲比赛的现场，首先，请允许我来个自我介绍。

我是今晚的主持人—来自05级6班的姗。

）英语演讲开场白篇二Good evening, all the appraiser mittee members. I e from HUST, majoring in foreign linguistics and applied linguistics. I am # and my supervisor is prof.#。

With her sincere and intellectual guidance, for nearly one whole year's hard work, I have finished my paper. Finally, it is the show time. This evening I will present my efforts to you all and I gratefully wele any correction.The title of my paper is A Study of the Causes of the Gothic Stylein A Rose for Emily from a Feminist Perspective. I choose this as my topic due to the following reasons. Firstly, I am fond of literature works ，especially gothic literature works. Secondly, I am quite familiar with this short story as this is one of the texts in our intensive teaching course and I have taught this text for more than 3 times 。

presentation讲稿

presentation讲稿Good morning/afternoon/evening, ladies and gentlemen/esteemed guests/colleagues,I would like to start by expressing my gratitude for giving me the opportunity to speak today. Today, I would like to discuss a topic that is crucial in our professional and personal lives - the art of effective presentations. Presentations play a vital role in many aspects of our lives, whether it is conveying information to clients, pitching ideas to colleagues, or even delivering an academic speech. A well-crafted and well-delivered presentation can make a lasting impact on our audience and achieve the desired goals. Therefore, in this discussion, I will outline some key elements and strategies for creating an impactful and successful presentation.1. Introduction:To begin, it is essential to grab the attention of the audience from the very start. You can achieve this by using a captivating opening statement, a thought-provoking question, or even a relevant anecdote. The introduction should clearly state the purpose of the presentation and provide a brief overview of what will follow.2. Structure:A well-structured presentation helps convey information in a logical and organized manner. The body of the presentation should be divided into clear sections or key points, emphasizing the main ideas. Each section should flow seamlessly into the next, making it easy for the audience to follow along.3. Visual Aids:Utilizing visual aids can significantly enhance the impact of a presentation. Graphics, images, charts, and videos can engage the audience visually and provide a deeper understanding of the content. However, it is crucial to use visual aids sparingly, ensuring they support the information being conveyed rather than distract from it.4. Engaging Content:The content of your presentation should be engaging and relevant to your audience. It is essential to understand their needs, interests, and expectations. Tailoring your message to meet their specific requirements will help capture their attention and maintain their interest throughout the presentation.5. Clear and Concise Language:Using clear and concise language is key to ensuring that your message is effectively communicated. Avoid jargon or technical terms that your audience may not understand. Instead, opt for simple and straightforward language that everyone can comprehend. Additionally, using appropriate transitions and linking words will help the presentation flow smoothly.6. Verbal Delivery:Aside from the presentation content, your delivery style plays a critical role in engaging the audience. Speak with confidence, varying your tone and pace to maintain interest. Maintain eye contact with the audience, addressing them as individuals rather than merely reading from prepared notes.Additionally, practice your presentation beforehand to ensure a smooth and confident delivery.7. Body Language:Non-verbal communication is just as important as verbal communication. Your body language can portray confidence, enthusiasm, and credibility. Stand tall and use hand gestures naturally to emphasize key points. Move around the stage or designated speaking area to create a sense of energy and captivate the audience's attention.8. Q&A and Interaction:Allocate time for questions and answers at the end of your presentation. Encourage audience participation and be prepared to respond thoughtfully and confidently. Engaging in a dialogue with your audience not only clarifies any doubts but also builds credibility and rapport.9. Conclusion:The conclusion is an opportunity to summarize the main points of your presentation and leave a lasting impression on the audience. It is essential to re-emphasize the key messages and ensure they resonate with the audience. Ending with a memorable quote or a call to action can inspire the audienceto take the desired steps.To conclude my presentation, I would like to emphasize that preparing and delivering an effective presentation requires careful planning, practice, and a keen understanding of the audience. By implementing the strategies discussed today, you can enhance the impact of your presentations and achieve successful outcomes.Thank you for your time and attention. I would be delighted to answer any questions you may have.。

2-扁平风格(英文)——

Company Name – Keynote Presentation
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Julian Derpington
Sales Manager
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Presentation Preference Oral Presentation or Poster Presentation

Paper Title3D Face Recognition based on Geodesic DistancesAuthorsShalini GuptaDepartment of Electrical and Computer EngineeringThe University of Texas at Austin1University Station C0800Austin,TX78712+1.512.471.8660+1.512.471.0616(fax)shalinig@Mia K.MarkeyDepartment of Biomedical EngineeringThe University of Texas at Austin1University Station C0800Austin,TX78712+1.512.471.8660+1.512.471.0616(fax)mia.markey@Jake AggarwalDepartment of Electrical and Computer EngineeringThe University of Texas at Austin1University Station C0803Austin,TX78712+1.512.471.1369+1.512.471.5532(fax)aggarwaljk@Alan C.BovikDepartment of Electrical and Computer EngineeringThe University of Texas at Austin1University Station C0803Austin,TX78712+1.512.471.5370+1.512.471.1225(fax)bovik@Presentation PreferenceOral Presentation or Poster PresentationPrincipal Author’s BiographyShalini Gupta received a BE degree in Electronics and Electrical Communication Engineering from Punjab Engineering College,India.She received a MS degree in Electrical and Computer Engi-neering from the University of Texas at Austin,where she is currently a PhD student.During her masters,she developed techniques for computer aided diagnosis of breast cancer.She is currently investigating techniques for3D human face recognition.KeywordsGeodesic distances,three-dimensional face recognition,range image,biometricsExtended AbstractProblem Statement:Automated human identiﬁcation is required in applications such as access control,passenger screening,passport control,surveillance,criminal justice and human computer interaction.Face recognition is one of the most widely investigated biometric techniques for human identiﬁcation. Face recognition systems require less user co-operation than systems based on other biometrics(e.g.ﬁngerprints and iris).Although considerable progress has been made on face recognition systems based on two dimensional(2D)intensity images,they are inadequate for robust face recognition. Their performance is reported to decrease signiﬁcantly with varying facial pose and illumination conditions[1].Three-dimensional face recognition systems are less sensitive to changes in ambient illumination conditions than2D systems[2].Three-dimensional face models can also be rigidly transformed to a canonical pose.Hence,considerable research attention is now being directed toward developing3D face recognition systems.Review of Previous Work:Techniques employed for3D face recognition include those based upon global appearance of face range images,surface matching,and local facial geometric features.Techniques based on global appearance of face range images are straight-forward extensions of statistical learning techniques that were successful to a degree with2D face images.They involve statistical learning of the3D face space through an ensemble of range images.A popular3D face recognition technique is based on principal component analysis(PCA)[3]and is often taken as the baseline for assessing the performance of other algorithms[4].While appearance based techniques have met with a degree of success,it is intuitively less obvious exactly what discriminatory information about faces they encode.Furthermore,since they employ information from large range image regions,their recog-nition performance is aﬀected by changes in facial pose,expression,occlusions,and holes.Techniques based on surface matching use an iterative procedures to rigidly align two face surfaces as closely as possible[5].A metric quantiﬁes the diﬀerence between the two face surfaces after alignment,and this is employed for recognition.The computational load of such techniques can be considerable,especially when searching large3D face databases.Their performance is also aﬀected by changes in facial expression.For techniques based on local geometric facial features,characteristics of localized regions of the face surface,and their relationships to others,are quantiﬁed and employed as features.Some local geometric features that have been used previously for face recognition include surface curva-tures,Euclidean distances and angles betweenﬁducial points on the face[6,7,8],point signatures [9],and shape variations of facial sub regions[10].Techniques based on local features require an additional step of localization and segmentation of speciﬁc regions of the face.A pragmatic issue aﬀecting the success of these techniques is the choice of local regions andﬁducial points.Ideally the choice of such regions should be based on an understanding of the variability of diﬀerent parts of the face within and between individuals.Three dimensional face recognition techniques based on local feature have been shown to be robust to a degree to varying facial expression[9].Recently,methods for expression invariant3D face recognition have been proposed[11].They are based on the assumption that diﬀerent facial expressions can be regarded as isometric deformations of the face surface.These deformations preserve intrinsic properties of the surface,one of which is the geodesic distance between a pair of points on the surface.Based on these ideas we present a preliminary study aimed at investigating the eﬀectiveness of using geodesic distances between all pairs of25ﬁducial points on the face as features for face recognition.To the best of our knowledge,this is theﬁrst study of its kind.Another contribution of this study is that instead of choosing a random set of points on the face surface,we considered facial landmarks relevant to measuring anthropometric facial proportions employed widely in fa-cial plastic surgery and art[12].The performance of the proposed face recognition algorithm was compared against other established algorithms.Proposed Approach:Three dimensional face models for the study were acquired by an MU-2stereo imaging systemby3Q Technologies Ltd.(Atlanta,GA).The system simultaneously acquires both shape and tex-ture information.The data set contained1128head models of105subjects.It was partitioned intoa gallery set containing one image each of the105subjects with a neutral expression.The probeset contained another663images of the gallery subjects with a neutral or an arbitrary expression.The probe set had a variable number of images per subject(1-55).Models were rigidly aligned to frontal orientation and range images were constructed.Theywere medianﬁltered and interpolated to remove holes.Twenty-ﬁveﬁducial points,as depicted inFigure1were manually located on each face.Three face recognition algorithms were implemented.Theﬁrst employed300geodesic distances(between all pairs ofﬁducial points)as features for recog-nition.The fast marching algorithm for front propagation was employed to calculate the geodesicdistance between pairs of points[13].The second algorithm employed300Euclidean distancesbetween all pairs ofﬁducial points as features.The normalized L1norm where each dimensionwas divided by its variance,was used as the metric for matching faces with both the Euclideandistance and geodesic distance features.The third3D face recognition algorithm implemented was based on PCA.For this algorithm,a subsection of each face range image of size354pixels,enclosing the main facial features wasemployed.The gallery and probe sets employed to test the performance of this algorithm were thesame as those used in theﬁrst and second algorithms.Additionally a separate set of360rangeimages of12subjects(30images per subjects),was used to train the PCA classiﬁer.Face rangeimages were projected on to42eigen vectors accounting for99%of the variance in the data.Again,the L1norm was employed for matching faces in the42dimensional PCA sub space.Veriﬁcation performance of all algorithms was evaluated using the receiver operating charac-teristic(ROC)methodology,from which the equal error rates(EER)were noted.Identiﬁcationperformance was evaluated by means of the cumulative match characteristic curves(CMC)andthe rank1recognition rates(RR)were observed.The performance of each technique for the entireprobe set,for neutral probes only and for expressive probes only were evaluated separately. Experimental Results:Table1presents the equal error rates for veriﬁcation performance and the rank1recognitionrates for identiﬁcation performance of the three face recognition algorithms.Figure2(a)presentsROC curves of the three systems for neutral expression probes only.Figure2(b)presents the CMCcurves for the three systems for neutral expression probes only.It is evident that the two algorithmsbased on Euclidean or geodesic distances between anthropometric facial landmarks(EER∼5%, RR∼89%)performed substantially better than the baseline PCA algorithm(EER=16.5%, RR=69.7%).The algorithms based on geodesic distance features performed on a par with the algorithm based on Euclidean distance features.Both were eﬀective,to a degree,at recognizing3D faces.In this study the performance of the proposed algorithm based on geodesic distancesbetween anthropometric facial landmarks decreased when probes with arbitrary facial expressionswere matched against a gallery of neutral expression3D faces.This suggests that geodesic distancesbetween pairs of landmarks on a face may not be preserved when the facial expression changes.This was contradictory to Bronstein et al.’s assumption regarding facial expressions being isometricdeformations of facial surfaces[11].In conclusion,geodesic distances between anthropometric landmarks were observed to be ef-fective features for recognizing3D faces,however they were not more eﬀective than Euclideandistances between the same landmarks.The3D face recognition algorithm based on geodesic dis-tance features was aﬀected by changes in facial expression.In the future,we plan to investigatemethods for reducing the dimensionality of the proposed algorithm and to identify the more dis-criminatory geodesic distance features.Acknowledgments:The authors would like to gratefully acknowledge Advanced Digital Imaging Research,LLC(Houston,TX)for providing support in terms of funding and3D face data for the study. Figures and Tables:Figure1:Theﬁgures show the25anthropometric landmarks that were considered on a color and range image of a human face.(a)ROC(b)CMCFigure2:Thisﬁgure presents the2(a)veriﬁcation performance in terms of an ROC curve;2(b) the cumulative match characteristic curves for the identiﬁcation performance of the three face recognition algorithms with the neutral expression probes only.Method EER(%)Rank1RR(%)N-N N-E N-All N-N N-E N-AllGEODESIC2.78.55.693.181.489.9EUCLIDEAN2.26.74.192.978.188.8PCA18.113.416.570.268.369.7Table1:Veriﬁcation and identiﬁcation performance statistics for the face recognition systems based on PCA,Euclidean distances and geodesic distances.N-N represents performance of a system for the neutral probes only,N-E for the expressive probes only and N-All for all probes. References[1]P.J.Phillips,P.Grother,R.J.Micheals,D.M.Blackburn,E.Tabassi,and J.M.Bone.Frvt2002:Overview and summary.available at ,March2003.[2]E.P.Kukula,S.J.Elliott,R.Waupotitsch,and B.Pesenti.Eﬀects of illumination changes onthe performance of geometrix facevision/spl reg/3d frs.In Security Technology,2004.38th Annual2004International Carnahan Conference on,pages331–337,2004.[3]K.I.Chang,K.W.Bowyer,and P.J.Flynn.An evaluation of multimodal2d+3d facebiometrics.Pattern Analysis and Machine Intelligence,IEEE Transactions on,27(4):619–624,2005.[4]P.J.Phillips,P.J.Flynn,T.Scruggs,K.W.Bowyer,and W.Worek.Preliminary face recog-nition grand challenge results.In Automatic Face and Gesture Recognition,2006.FGR2006.7th International Conference on,pages15–24,2006.[5]Xiaoguang Lu,A.K.Jain,and D.Colbry.Matching2.5d face scans to3d models.PatternAnalysis and Machine Intelligence,IEEE Transactions on,28(1):31–43,2006.[6]G.G.Gordon.Face recognition based on depth and curvature features.In Computer Vi-sion and Pattern Recognition,1992.Proceedings CVPR’92.,1992IEEE Computer Society Conference on,pages808–810,1992.[7]A.B.Moreno,A.Sanchez,J.Fco,V.Fco,and J.Diaz.Face recognition using3d surface-extracted descriptors.In Irish Machine Vision and Image Processing Conference(IMVIP 2003),Sepetember2003.[8]Y.Lee,H.Song,U.Yang,H.Shin,and K.Sohn.Local feature based3d face recognition.InAudio-and Video-based Biometric Person Authentication,2005International Conference on, LNCS,volume3546,pages909–918,2005.[9]Yingjie Wang,Chin-Seng Chua,and Yeong-Khing Ho.Facial feature detection and facerecognition from2d and3d images.Pattern Recognition Letters,23(10):1191–1202,2002. [10]Chenghua Xu,Yunhong Wang,Tieniu Tan,and Long Quan.Automatic3d face recognitioncombining global geometric features with local shape variation information.In Automatic Face and Gesture Recognition,2004.Proceedings.Sixth IEEE International Conference on, pages308–313,2004.[11]A.M.Bronstein,M.M.Bronstein,and R.Kimmel.Three-dimensional face recognition.International Journal of Computer Vision,64(1):5–30,2005.[12]L.Farkas.Anthropometric Facial Proportions in Medicine.Thomas Books,1987.[13]R.Kimmel and puting geodesic paths on manifolds.Proceedings of theNational Academy of Sciences,USA,95:84318435,1998.。

presentation——专业英语课件PPT

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Edit for the ear: round off numbers and statistics, avoid
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PowerPoint Presentation - The Calvin Cycle

Can rapidly lose water to the air
Most of the water loss from a plant occurs through small pores called stomata which are usually located on the undersurface of leaves
Plants that use the CAM Pathway by opening their Stomata at night and Closing it during the day, the opposite of what other plants do.
At night, CAM plants take in CO2 and fix it into organic compounds.
In addition to PGAL, these reactions produce ADP, NADP+ and phosphate
STEP 3:
Most of the PGAL is converted back into RuBP in a complicated series of reactions.
Require a phosphate group from another molecule of ATP, which is changed into ADP.
By regenerating the RuBP that was consumed in Step 1, the reactions of Step 3 allow the Calvin Cycle to continue
6CO2 + 6H2O + light energy C6H12O6 + 6O2

Presentation开场白与结束语

Presentation开场白及结束语1. 张刚开场白：-I am delighted to stand here and have this opportunity to share something with you. Today I will focus on...-It's my pleasant duty to report my research. Today I'd like to say something about... -I'd like to thank you for giving me the chance to stand here. Well, the topic I'm going to deal with is...结束语：-That's all. Thanks for your attention.-I am afraid that the clock is against us, so we had better stop here.2. 王一越开场白:-Mr. Chairman, teachers and classmates, my name is Wang Yiyue. I come from the school of management. The title of my presentation is…-Good morning, everyone, my name is Wang Yiyue. I come from the school of management.I am so glad to have the opportunity to give to a speech to you on such an occasion. My speech is about…-Good morning, everyone! My name is Wang Yiyue. Thank you for giving me this opportunity to stand here. My subject is …结束语：-That’s all. Thank you for listening.-That’s all for my talk. If there are any questions, I would like to giv e further explanations.3. 李慧颖开场白：-Good morning, everyone. I am B from C. I appreciate the opportunity to be here to attend this mini-symposium [session]. The topic of my paper is <about> D. My presentation will be divided into the following three parts.-Mr. Chairman, distinguished colleagues, Ladies and Gentlemen, Thank you, Mr. Chairman, for your gracious introduction. I am honored to have the chance to address you on this special occasion. I would like to divide my talk into three parts: 1> background of …; 2> recent results in my group; 3> conclusions.-Prof. A, Ladies and Gentlemen, Thank you very much, Professor A, for your kind introduction. I am delighted to be here <with you this morning>. I am going to give this talk in four parts. First…. Second…. Third…. Finally….结束语：-Once again I would like to thank you for the opportunity of talking to you on the subject. I hope you will give me your comments and suggestions. That will help me improve my work.-Thank you for your attention. If there are any points that I didn’t make clearly, please point them out and I would like to give further explanations.4. 佟诚德开场白：-Good morning everybody. It is really an honor for me to give a report here. In the next ten minutes, I will focus on the following three aspects. First, …. Then, …. At last, … .-I’m very pleased to be here to share my ideas with all of you. It is a great opportunity and challenge as I have only 5 minutes for presentation. So I can only give a brief introduction to my work and questionsat the end are welcomed…-Hello, everyone. My topic today is … and I shall address myself to the following contents…结束语：-That’s all for my presentation. Thanks for listening. Thank you all.-Well, I think we are running short of time and my presentation should be over. Thank you for your attention.5. 焦炎开场白：- Mr. President, ladies, and gentlemen:I never suspected that I was to have so great an honor, so carefully given, as to become a follower of the distinguished speaker who has just taken his seat.- Mr. President and gentlemen:I am obliged to my friend Dr. Clarke for the complimentary terms in which he has presented me to you. But I must appeal to your commiseration. Harvard and Yale! Can any undergraduate of either institution, can any recent graduate of either institution, imagine a man responding to that toast? However, I must make the best of the position, and speak of some points upon which the two institutions are clearly agreed. And here I am reminded of a story of a certain New England farmer, who said that he and ‘Squire Jones had more cows between them than all the rest of the village; and his brag being disputed, he said he could prove it, for the ‘Squire had forty-five cows and he had one, and the village altogether had not forty-six. -Honorable Vice Premier Madame Wu Yi,Distinguished guests,Ladies and gentlemen: On behalf of Emerson, I would like to thank you for this great honor to share our thoughts with you regarding economic development and investment inside China. For many years, Emerson has participated in this important conference and I am delighted to be here addressing this gathering today--- a tremendous honor.结束语：-Once again, I would like to thank the Ministry of Commerce and the CIFIT conference for giving me the opportunity to talk to you today. Have a good day and thanks for listening.-So, I close in saying that I might have been given a bad break, but I've got an awful lot to live for.6. 祝元坤开场白：--Good morning everybody! It's my honor to speak here, and I am very glad to share my topic with you. Then today I'd like to talk something about...-Good morning! I feel really honored to stand here and make a presentation. TodayI'm going to look together with you into this topic:-Good afternoon everyone! First, I am so pleased to have a presentation here. Today,I am going to talk about...结束语：-That's all. Thank you for you attention！-Thank you for listening, if you have any question please be free to ask.7. 王冠石开场白：-I may be permitted at the outset,to speak a little about the share that we have taken on this side of water in this great achievement which in its glorious consummation,now receives the applause of the world.-In this symposium my part is only to sit in silence.to express one's feeling asthe end draws near to intimate a task.-I want to talk to you tonight from my heart on a subject of deep concern to everyone.结束语：-and so I end with a line from a Latin poet who uttered the message more than fifteen hundred years ago,"death plucks my ear and says:live-I am coming."-And finally we have that gentler phrase, that one which shows you another true sideof the man,shows you that in his soldier heart there was room for other than glorywar mottoes and in his tongue the gift to fitly phrase them-"let us have peace."8. 韩修柱开场白：-Good morning,everyone,my honored teacher and my fellow students．I'm very honoredto be the host for today's presentation this afternoon .my presentation is about extrusion process under warm temperature. Now let’s warmly welcome Mr./Mrs. ...to give us presentation.-hello everyone,I am glad and proud of myself to be here to introduce our smart and experienced doctor,Mr.… .H e will give us his new presentationabout… OK,let’s give him our warmly welcome.Thankyou.-Ladies and gentlemen,I am honored to be here to introduce Mr.…His presentationis about… as far as we know,…is the hot point in study field,I am sure you are interested in new development in this field,so I think we should listen this presentation carefully. Let’s welcomeMr.…结束语：-That is all,thanks for your attention. Thank you!-Thanks for your attention.Maybe my presentation has some aspects you do not understand fully,you can ask me after the presentation. Maybe my presentation has something which is not correct,you can give me your advice and correct them,thanks again.-That is all my presentation,thanks for your coming,if you can have any questions,youcan ask me now.OK, thank you !9. 袁鹤然开场白：-Mr. Chairman, ladies and gentleman,I am delighted/pleased/glad to have the opportunity to present/of making this presentation. The title of my presentation is…- Good morning/afternoon/evening ladies and gentleman,I'd like to thank you for inviting/asking me/giving me the chance to report my research on such an occasion. Before we start our presentation, let's take a brief look at the agenda…- Mr. Chairman, representatives,The subject of my presentation/I shall be speaking today about/My presentation concerns/Today's topic is... There are five main aspects to this topic <...the first, ... the second, ...a third, ...another, ... the final>结束语：-I am afraid that the clock is against us, so we had better stop here. Thank you, Mr. Chairman, Thank you all.-I hope this has given you some idea/clear idea/an outline of... If there are any questions, please point them out and I would like to give further explanations.10. 苏文涛开场白：-Good afternoon and thank you for coming today. My name is…, and I'm the Project Manager in Taipei for …-I am glad that I can stand here and give all of you my speech abo ut…-Ladies and Gentlemen, you must have heard that….and today my topic is…结束语：-That is all. Thanks for your attention.-That is what I want to say, if you have any question, you can ask now.11. 张可心开场白：-Good morning everyone!I am honored to be with you today to...-I'm very happy to have this opportunity to...结束语：-That's all, thank you.-Any other question please send email to... Thank you for your attention.12. 侯赵平开场白：-I am delighted/pleased/glad to have the opportunity to present/of making this presentation...-I am grateful for the opportunity to present...-I'd like to thank you for inviting/asking me/giving me the chance to...结束语：-Stay hungry. Stay foolish. Thank you all very much.-OK,thank you for listening,that's all.-That's it. We have known several habits which could be really amazing if you do them from now on. And... believe me...I am not fooling you, never! All right, now it's 〔下一个同学的名字或老师> time. Thank you everyone!13. 何鹏开场白：-Good morning,ladies and gentlemen. The main ideas of my presentation are as follow:...-Mr. Chairman, thank you for introducing me to everyone here. It’s my honor to show my research results...-Thank you, Mr. Chairman. The meeting is excellent, and I am very glad here. My presentation include the following结束语：-That’s all! Thank you for your attention.-As an end, my presentation is over. Thank you!-That’s all! Thank you all!14. 严柏平开场白：-Good morning/afternoon/evening ladies and gentleman-The purpose of this plenary session is to...-I am delighted/pleased/glad to have the opportunity to present/of making this presentation…结束语：-I hope I've managed to give you a clearer picture of...-If there are any questions, I'd be delighted to...15. 张伟开场白：-Ladies and Gentlemen,today I will talk about....-Hello everybody, my name is zhangwei,now we will discuss...结束语：-Thank you all for listening.-Thanks.16. 聂凯波开场白：-Mr. chairman, ladies and gentlemen,The title of my presentation is ×××. I am very glad to have the opportunity to report my research on such an occasion. I will lay my stress on the following three aspects.-Mr. chairman,Thank you for your warm introduction and also for your efforts in making the opening of the conference so successful. Just now the over-praised introduction you gave me, I thin k, is meant for the study on ××× that I have been carrying on in recent years. Now I would like to say something about the study, and I will welcome your comments at the end.-Mr. chairman,It is a great honor to have the chance to report my research. The title of my presentation is ×××.结束语：-Now that I have finished my speech, I hope you will give me your comments andsuggestions. That will help me improve my work.-That’all for my talk. If there are any points that I didn’t make clearly, please point them out and I would like to give further explanations.17. 杨晓光开场白：-Good morning, ladies and gentlemen, today my topic is…-Mr. Chairman, ladies and gentlemen, I am very glad to give my presentation here today, my topic contains three points as follows…-Mr. chairman, Thank you for your warm introduction and also for your efforts in making the opening of the conference so successful. Just now the over-praised introduction you gave me, I think, is meant for the study on"…", now I would like to say something a bout the study, and I will welcome your comments at the end…结束语：-That’s all, thank you everyone, thank you for your attention.-Now that I have finished my speech, I hope you’ll give me your comments and suggestions. That’ll help me improve my work.18. 刘昕应对问题：-I will be pleased to answer any questions you may have at the end of the presentation. -Please can you save your questions till the end.-If you have any questions, I will be pleased to answer them at the end of the presentation.-there will be time at the end of the presentation to answer your questions-so please feel free to ask me anything then.-Don't hesitate to interrupt if you have a question.-Please feel free to interrupt me at any time.-Please stop me if you have any questions.-If you need clarification on any point, you're welcome to ask questions at any time. -Can I come back to that point later?-I will be coming to that point in a minute.-That's a tricky question.-We will go into details later. But just to give you an idea of...-I am afraid there's no easy answer to that one...-Yes, that's a very good point.-Perhaps we could leave that point until the questions at the end of the presentation -I think I said that I would answer questions at the end of the presentation---perhaps you wouldn't mind waiting until then.-I think we have time for just one more question欢迎听众<正式>：-Welcome to our company-I am pleased to be able to welcome you to our company...-I'd like to thank you for coming.-May I take this opportunity of thanking you for coming欢迎听众<非正式>：-I'm glad you could all get here...-I'm glad to see so many people here.-It's great to be back here.-Hello again everybody. Thank you for being on time/making the effort to come today. -Welcome to X Part II.受邀请在会议上致词：-I am delighted/pleased/glad to have the opportunity to present/of making this presentation...-I am grateful for the opportunity to present...-I'd like to thank you for inviting/asking me/giving me the chance to...-Good morning/afternoon/evening ladies and gentleman-It's my pleasant duty today to...-I've been asked to...告知演讲的话题：-the subject of my presentation is...-I shall be speaking today about...-My presentation concerns...-Today's topic is...-Today we are here to give a presentation on...-Today we are here to talk about...Before we start, I'd like you meet my team members...-A brief look at today's agenda...<告诉听众所讲内容的先后顺序>-Before we start our presentation, let's take a brief look at the agenda...-I shall be offering a brief analysis of...-the main area that I intend to cover in this presentation is...-Take a moment and think of...-Thank you for giving me the opportunity to tell you about...告诉听众发言的长度：-During the next ten minutes, I shall...-I shall be speaking for about ten minutes...-My presentation will last for about ten minutes...-I won't take up more than ten minutes of your time...-I don't intend to speak for longer than ten minutes...-I know that time is short, so I intend to keep this brief-I have a lot to cram in to the next ten minutes, so I'd better make a start... 引起听众的兴趣：-I'm going to be speaking about something that is vitally important to all of us. -My presentation will help solve a problem that has puzzled people for years... -At the end of this presentation you will understand why this company has been so successful for so long...-I am going to be talking about a product that could double your profit margins... -the next ten minutes will change your attitude to sales and marketing...-Over the next ten minutes you are going to hear about something that will change the way your companies operate...-By the end of this presentation you will know all there is to know about...告诉听众内容要点：-there are five main aspects to this topic <...the first, ... the second, ...a third, ...another, ... the final>-I am going to examine these topics in the following order <...first, ...next, ...after that, ...finally>-I've divided my talk into five parts...-I will deal with these topics in chronological order...-I'm going to start with a general overview and then focus on this particular problem <...in general, ...more particularly>.-I want to start with this particular topic, and then draw some more general conclusions from it <...specifically, ... in a wider context>.-there are <a number of> factors that may affect...-We have to take into account in any discussion of this subject, the following considerations.-We all ought to be aware of the following points.结束语：-In conclusion, I'd like to...-I'd like to finish by...-Finally...-By way of conclusion...- hope I have made myself understood-I hope you have found this useful-I hope this has given you some idea/clear idea/an outline of...-Let me end by saying...-That, then was all I had to say on...-That concludes our presentation...-I hope I've managed to give you a clearer picture of...-If there are any questions, I'd be delighted to...-Thank you for your attention...-Let's break for a coffee at this point-I am afraid that the clock is against us, so we had better stop here-You have been a very attentive audience---thank you。

平坦衰落的Clarke模型原理详述-Read

平坦衰落的Clarke 模型原理详述图4.6显示了一辆以速度v 沿x 方向运动的汽车所接收到的入射平面波。

根据运动方向，选择在x-y 方向进行入射角度测量。

由于接收机的运动，每个波都经历了多普勒频移并同一时间到达接收机。

也就是说，假设任何平面波（平坦衰落条件下）都没有附加时延。

对第n 个以角度n α到达x 轴的入射波，多普勒频移为：cos n n v f αλ=（4.9）式中，λ为入射波的波长。

到达移动台的垂直极化平面波存在E 和H 场强分量，分别表示为：图4.6 以任意角度到达的平面波示意图01cos(2)Nz n c n n E E C f t πθ==+∑ （4.10）1sin cos(2)N x n n c n n E H C f t απθη==-+∑ （4.11） 01cos cos(2)N y n n c n n E H Cf t απθη==-+∑ （4.12）其中，0E 是本地平均E 场（假设为恒定值）的实数幅度，n C 是表示不同电波幅度的实数随机变量，η是自由空间的固有阻抗（377Ω），c f 是载波频率。

第n 个到达分量的随机相位n θ为：2n n n f t θπϕ=+ （4.13）对E 和H 场的幅度进行归一化后，可得n C 的平均值，并由下式确定：（4.14）由于多普勒频移与载波相比很小，因而三种场分量可建模为窄带随机过程。

若N 足够大，三个分量z E ，z H ，y H 可以近似看作高斯随机变量。

假设相位角在(]0,2π间隔内有均匀的概率密度函数，则E 场可用同相与正交分量表示：()cos(2)()sin(2)z c c s c E T t f t T t f t ππ=- （4.15）其中01()cos(2)Nc n n n n T t E C f t πϕ==+∑ （4.16）01()sin(2)N s n n n n T t E C f t πϕ==+∑ （4.17）高斯随机过程在任意时刻t 均可独立表示为c T 和s T 。

presentation开场白

presentation开场白篇一：Presentation开场白及结束语Presentation开场白及结束语1. 张刚开场白：-I am delighted to stand here and have this opportunity to share something with you. Today I will focus on...-It’s my pleasant duty to report my research. Today I’d like to say something about...-I’d like to thank you for giving me the chance to stand here. Well, the topic I’m going to deal with is...结束语：-That’s all. Thanks for your attention.-I am afraid that the clock is against us, so we had better stop here.2. 王一越开场白:-Mr. Chairman, teachers and classmates, my name is Wang Yiyue. I come from the school of management. The title of my presentation is…-Good morning, everyone, my name is Wang Yiyue. I come fromthe school of management. I am so glad to have the opportunity to give to a speech to you on such an occasion. My speech is about…-Good morning, everyone! My name is Wang Yiyue. Thank you for giving me this opportunity to stand here. My subject is …结束语：-That’s all. Thank you for listening.-That’s all for my talk. If there are any questions, I would like to give further explanations.3. 李慧颖开场白：-Good morning, everyone. I am B from C. I appreciate the opportunity to be here to attend this mini-symposium [session]. The topic of my paper is (about) D. My presentation will be divided into the following three parts.-Mr. Chairman, distinguished colleagues, Ladies and Gentlemen, Thank you, Mr. Chairman, for your gracious introduction. I am honored to have the chance to address you on this special occasion. I would like to divide my talk into three parts: 1) background of …; 2) recent results in my group;3) conclusions.-Prof. A, Ladies and Gentlemen, Thank you very much,Professor A, for your kind introduction. I am delighted to be here (with you this morning). I am going to give this talk in four parts. First…. Second…. Third…. Finally….结束语：-Once again I would like to thank you for the opportunity of talking to you on the subject. I hope you will give me your comments and suggestions. 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