Chapter 13 Advanced Security and Beyond - CCSF Home …

合集下载

讲赛博城市的英文书

讲赛博城市的英文书

讲赛博城市的英文书Cybercities: The Future of Urban LivingIn the not-so-distant future, our cities will undergo a profound transformation, evolving into vibrant, technologically-advanced hubs that redefine the way we live, work, and interact. These cybercities, as they are often referred to, will be the embodiment of humanity's quest to harness the power of technology and create urban environments that are more efficient, sustainable, and responsive to the needs of their inhabitants.At the heart of these cybercities will be a vast network of interconnected systems that will seamlessly integrate various aspects of urban life. From transportation and energy management to healthcare and education, every facet of the city will be optimized through the use of cutting-edge technologies and data-driven decision-making.Imagine a city where self-driving vehicles navigate the streets, effortlessly transporting people and goods to their destinations.Traffic congestion will be a thing of the past, as these autonomous vehicles communicate with one another and with the city's infrastructure to ensure the smooth flow of traffic. Commuters will no longer have to worry about finding parking or dealing with the stress of driving, as they can simply summon a ride and be whisked away to their destination.The energy grid of these cybercities will be equally impressive. Renewable energy sources, such as solar and wind, will be integrated into the cityscape, with buildings designed to maximize energy efficiency and minimize environmental impact. Smart grids will monitor and manage energy usage in real-time, automatically adjusting to fluctuations in demand and ensuring that resources are used in the most efficient manner possible.Healthcare will also undergo a transformation in cybercities. Telemedicine and remote monitoring technologies will allow healthcare providers to deliver high-quality care to patients, regardless of their physical location. Wearable devices will continuously monitor an individual's vital signs and alert medical professionals of any potential health issues, enabling early intervention and preventive care.Education, too, will be revolutionized in cybercities. Virtual and augmented reality technologies will immerse students in interactivelearning environments, allowing them to explore complex concepts and collaborate with peers from around the world. Personalized learning algorithms will tailor the educational experience to the unique needs and learning styles of each student, ensuring that they reach their full potential.But the true magic of cybercities will lie in the way they foster human connections and community. Through the use of advanced communication technologies and social platforms, residents will be able to engage with one another in new and exciting ways. Shared public spaces, both physical and virtual, will become hubs of activity, where people can come together to exchange ideas, collaborate on projects, and forge meaningful relationships.Cybercities will also be designed with sustainability and environmental protection in mind. Green spaces and parks will be integrated throughout the urban landscape, providing respite from the hustle and bustle of city life and promoting the overall well-being of residents. Waste management systems will be optimized to minimize the environmental impact of the city, with a focus on recycling, composting, and the efficient use of resources.As we look to the future, it's clear that cybercities will be more than just a collection of technological advancements. They will be living, breathing entities that reflect the values and aspirations of thepeople who inhabit them. By harnessing the power of technology, we can create urban environments that are not only efficient and sustainable, but also nurturing and supportive of the human experience.Of course, the transition to cybercities will not be without its challenges. Issues of data privacy, security, and the potential for technological disruption will need to be carefully addressed. But with the right approach and a commitment to inclusive and ethical development, these challenges can be overcome, paving the way for a future where technology and humanity coexist in perfect harmony.In the end, the rise of cybercities represents a transformative moment in the history of urban living. By embracing the power of technology and the boundless creativity of the human spirit, we can create cities that are not only more efficient and sustainable, but also more vibrant, connected, and fulfilling places to call home. It is a future that we can all look forward to with excitement and anticipation.。

《《暗夜女王》(12-21章)英汉翻译报告》范文

《《暗夜女王》(12-21章)英汉翻译报告》范文

《《暗夜女王》(12-21章)英汉翻译报告》篇一一、引言本报告旨在阐述《暗夜女王》第12章至第21章的英汉翻译过程,分析翻译中的难点与重点,并总结翻译策略与经验教训。

本次翻译对于深化语言学习,提升跨文化交流能力具有积极意义。

二、背景介绍《暗夜女王》是一部融合了悬疑、恐怖与浪漫元素的小说。

作者以精湛的笔触,描绘了一个充满神秘色彩的奇幻世界。

本报告将重点关注第12章至第21章的英汉翻译过程,这些章节涉及人物心理刻画、情感冲突、文化背景等多个方面。

三、翻译过程在翻译过程中,我们首先对原文进行了仔细阅读,理解其整体内容及各章节的背景、人物关系等。

然后,我们进行了词汇、句子的翻译工作,并针对难点进行了反复讨论与修改。

在翻译过程中,我们遵循了忠实原文、表达流畅的原则,力求使译文准确传达原文的意思。

四、翻译难点与重点分析1. 翻译难点(1) 文化背景差异:由于中西方文化背景差异较大,部分英文表达在中文中难以找到完全对应的词汇或表达方式。

如一些宗教、历史典故等需进行深入理解后进行翻译。

(2) 人物心理刻画:小说中的人物心理描写丰富,需准确把握人物性格、情感变化等,以使译文更好地传达原文的情感色彩。

(3) 长句翻译:英文句子结构复杂,长句较多,需对句子结构进行拆分、重组,以使译文更加符合中文表达习惯。

2. 翻译重点(1) 词汇选择:选择准确、地道的词汇是翻译的关键。

我们通过查阅词典、参考相关文献及与团队成员讨论等方式,确保词汇的准确性。

(2) 句式调整:在翻译过程中,我们根据中文表达习惯对句子结构进行调整,使译文更加流畅自然。

(3) 文化因素处理:针对文化背景差异,我们通过了解中西文化差异及习俗,对部分内容进行适当调整,以使译文更好地符合中文读者的阅读习惯。

五、翻译策略与经验教训1. 翻译策略(1) 词汇方面:采用意译、音译等方法处理专有名词及文化背景差异较大的词汇。

对于一些难以找到对应中文表达的词汇,我们通过意译法进行翻译,尽量使译文传达出原文的意思;对于人名、地名等专有名词采用音译法进行翻译。

中级有机化学-裴坚

中级有机化学-裴坚

2. CF3CO2Et, -15 oC,
Cl
30 分钟,然后
O
3. HCl, HOAc, 70 oC, 4 h
87% (从 4 开始)
5
N
H
提示
4
nBuLi是一个金属化试剂。
新戊酰胺基团具有在苯环的金属锂化中有定位效应。
请预测其与金属反应的区域化学?
生成的金属锂化物在第二步反应中作为亲核试剂。
Advanced Organic Chemistry, Chapter 1, Jian Pei, College of Chemistry, Peking University,
解答
Cl
1. PivCl, aq. NaOH, MTBE, 30 oC,
30 分钟, -10 oC, 2 h, 97%
4
NH2
Advanced Organic Chemistry, Jian Pei, College of Chemistry, Peking University,
2
第一章 Efavirenz 的合成 (Merck, DuPont 1999)
F3C Cl
O NO H
Advanced Organic Chemistry, Chapter 1, Jian Pei, College of Chemistry, Peking University,
1. PivCl, aq. NaOH, MTBE, 30 oC,
30 min, -10 oC, 2 h, 97%
NH2 3
4
1. nBuLi, TMEDA, MTBE, -20 → 5 oC, 2 h, 然后
2. CF3CO2Et, -15 oC, 30 min, 然后

全新版大学英语(第二版)综合教程_第四册_Unit 7 The Nightmare and the Dreams

全新版大学英语(第二版)综合教程_第四册_Unit 7 The Nightmare and the Dreams

Peggy Noonan lives in New Y ork and writes a weekly column for The Wall Street Journal. This piece is taken from one of them. In it she reflects on her week and on life in the city. Writing less than a year away from the destruction of the World Trade Center, her thoughts are inevitably affected by that terrible event.--------------------------------------------------------------------------------佩吉·诺南住在纽约,每周为《华尔街时报》撰写专栏文章。

本文即其中一篇。

她在文章中反思了自己的一周以及这个城市的生活。

撰写此文时,离世贸中心被毁还不到一周年,她的思考不可避免地带有这一可怕事件的阴影。

The Nightmare and the Dreams-- How has Sept. 11 affected our national unconscious?Peggy Noonan1 It is hot in New Y ork. It is so hot that once when I had a fever a friend called and asked me how I felt and I said, "Y ou know how dry and hot paper feels when it's been faxed? That's how I feel." And how I felt all day yesterday. It is hot. We feel as if we've been faxed.--------------------------------------------------------------------------------梦魇与梦想——9·11事件如何影响了国民的潜意识?佩吉·诺南纽约真热。

美国伊朗英文作文

美国伊朗英文作文

美国伊朗英文作文1. What is your opinion on the current tensions between the United States and Iran?It's a complicated situation that has been brewing for decades. The recent escalation in tensions is concerning and has the potential to lead to a full-blown conflict. Both sides need to exercise restraint and engage in diplomatic dialogue to find a peaceful resolution.2. How do you think the United States should handle the Iran nuclear deal?The United States should honor its commitments under the Iran nuclear deal and work with its allies to ensure that Iran complies with the terms of the agreement. Unilateral withdrawal from the deal was a mistake and has only served to increase tensions between the two countries.3. What do you think about the recent assassination ofIranian General Qasem Soleimani by the United States?The assassination of General Soleimani was a reckless and dangerous move that has further destabilized the region. It has also put American lives at risk and could lead to retaliatory attacks by Iran. The United States should have pursued diplomatic options instead of resorting to violence.4. How do you think Iran will respond to the United States' actions?It's difficult to predict how Iran will respond, butit's likely that they will take some form of retaliatory action. This could include attacks on American interests or allies in the region, or further development of their nuclear program. The United States needs to be prepared for any potential response from Iran.5. What role do you think other countries should playin resolving the tensions between the United States and Iran?Other countries should encourage both the United States and Iran to engage in diplomatic dialogue and work towards a peaceful resolution. They should also offer their support and expertise in resolving the conflict, whether through mediation or other means. It's important for the international community to come together to prevent a wider conflict from breaking out.。

SAT满分阅读系列10--OG全解密byciciyue

SAT满分阅读系列10--OG全解密byciciyue

SAT满分阅读系列10--OG全解密byciciyueTest 10P961 Q11-12THE TREMATODE RIBEIROIA ONDATRAE IN SOUTHEASTERN AMPHIBIANSBy: M. Kevin HamedAmphibian Die-offs:In the last 20 years, scientists have documented an increasing trend of amphibian population declines and extinctions (1). Potential causes for these declines include: climate change, habitat loss, diseases, and introduced species (2). In 1995, public perception and concern of amphibian declines increased greatly when a group of middle school students in Minnesota found a pond where approximately half of metamorphic leopard frogs (Rana pipiens) had malformations (3). Since this initial discovery, over 60 species of frogs, toads and salamanders have been reported with malformations in 46 states. Extra, missing or misshaped hind limbs are the most common malformations observed. Most of the reported malformations have been from the Western, Midwestern, and Northeastern United States (3). Populations in the Northeast and Midwest were assumed to be affected by water contamination from pesticides as Canadian ponds in agriculture areas displayed the highest rates of malformations (4). However, other hypotheses were suggested including increased UV-B radiation from ozone depletion, retinoids in waste water, and parasite infection.In 1986, Pacific treefrogs (Hyla regilla) and long-toed salamanders (Ambystoma macrodactylum) were reported with high prevalence of limb abnormalities, especially extra limbs (5).The malformations were thought to be caused by trematodes, which are parasitic worms. Trematodes burrow into tadpoles around developing limb buds and form cysts (metacercariae), which can mechanically interfere with development (5). Almost 10 years later, Pieter Johnson and colleagues (6) examined Pacific treefrogs in 13 ponds and found severe malformations in 4 ponds. Water analysis revealed no indication of PCBs, pesticides, or heavy metals. However, all 4 ponds with malformed treefrogs had one characteristic that was missing from ponds where malformations were not observed – high abundance of a certain species of aquatic snail (Planorbella tenus, 6). As it turns out, this snail is the first host of the parasitic trematode Ribeiroia ondatrae. In the laboratory, Johnson exposed Pacific treefrog tadpoles to Ribeiroia ondatrae and 85% of metamorphic frogs developed malformations. This initial research demonstrated that R. ondatrae caused malformations (6), which may impact amphibian populations by reducing the chance of juvenile frogs reaching adulthood.Malformations caused by R. ondatrae infection have been documented in the western toad (Bufo boreas), rough-skinned newt (Tarcha granulose), California newt (Taricha torosa), northern red-legged frog (Rana aurora), cascade frog (Rana cascade), American bullfrog (Rana catesbeiana), Columbia spotted frog (Rana luteiventris), Great Basin spadefoot toad (Scaphiopus intermontanus), and the Oregon spotted frog (Rana pretiosa; 7,8). The prevalence of amphibian malformations due to R. ondatrae appears to be increasing, but may be an artifact of heightened awareness and increased monitoring of wetlands for malformed amphibians. The first report of malformed frogs in North American was in 1899 and subsequent reports werepublished through the 1960s. In a pond in western Montana, extra-legged treefrogs composed 20-25% ofmetamorphosing individuals from 1958-1961 (4). Johnson and colleagues re-surveyed the same pond in the 1990s and found 50% of the treefrogs had malformations with high rates of R. ondatrae infection (4). Further, two of four species that had bred at this pond in the 1960s were no longer present (4). Another study in Minnesota ponds reported that the types of malformations in resident amphibians increased from 2 to 12 malformation types between the 1960s and 1990s (9). Based on these studies, it appears that malformation rates are increasing as well as the types of malformations observed in amphibian populations. Interestingly, a search of the literature revealed no reported cases of malformations due to R. ondatrae in the southeastern United States; however, extensive surveys have not been performed.Pathogen Characteristics:Ribeiroia ondatrae has a complex life cycle that includes three hosts: primary host (birds or mammals), first intermediate host (snails), and second intermediate host (amphibians or fish). Adult R. ondatrae worms live in the gastrointestinal track of birds and mammals, and reproduce sexually. Fertilized eggs are released into the environment when the primary host defecates. If the feces is deposited in the water, the eggs will hatch into miracidium that burrow into planorbid snails and reproduce asexually. Thereafter, free-swimming cercariae are released from the snail in large numbers. The cercariae burrow into tadpoles usually around the limb buds or vent and encyst in the host as metacercariae (4). The metacercarial cysts can mechanically or chemically disrupt limb development. If the infected amphibianis consumed by a bird or mammal, the metacercariae develop into adult worms and the life cycle is completed. It is believed that malformations from Ribeiroia infection may benefit the trematode by making capture of the amphibian easier by the primary host (4,10). Known primary hosts of Ribeiroia include great blue herons (Ardea Herodias), osprey (Pandion haliaetus), muskrats (Ondatra zibethicus), red fox (Vulpes vulpes), mink (Mustela vison), raccoons (Procyon lotor), and stripped skunks (Mephitis mephitis, 9).Field, Gross, and Histological Signs:When R. ondatrae metacercariae encyst in the tadpole around the pelvic griddle, malformations almost always occur. Typical amphibian malformations due to R. ondatrae include: polymelia (extra limbs; Fig. 1), polydactyly (extra digits), amelia (missing limb), ectromelia (missing digits), apody (missing foot), polypody (multiple feet), polyphalangy (multiple phalanges; Fig.1), skin webbing, anophthalmy (missing eye), and mandibular hypoplasia (malformed jaw, 10). Most (95%) malformations occur on the hind limbs and are usually (89%) asymmetrical in frogs. Salamanders experience a more equal distribution of malformations between forelimbs and hind limbs (4). The U.S. Geological Survey (USGS) published a field guide to amphibian malformations in 2005, which is available at: /doc/45e4dad280eb6294dd886cf2.html/publications/fact_sheets/pdfs/frog.pdf. Amphibian malformations can be reported to USGS at: /doc/45e4dad280eb6294dd886cf2.html/portal/server.pt.Factors Contributing to Emergence:Prior to the discovery of R. ondatrae, pesticides and UV-Bradiation were thought to be the primary causes of amphibian malformations. After learning that R. ondatrae cause malformations, researchers began investigating what mechanisms might contribute to higher parasite infection rates. Johnson and colleaguesled a series of aquatic ecosystem studies that demonstrated that factors that contribute to the proliferation of snails in the family Planorbidae will increase R. ondatrae densities and the number of amphibian malformations (11,12). Factors that were identified were those that contribute to euthrophication (i.e., excessive algal production), such as allowing cattle to deposit waste in wetlands or high amounts of fertilizers in runoff. In addition, pesticides, such as Atrazine, Malathion and Esfenvalerate, can affect the immune system and mobility of tadpoles, which can increase the likelihood of infection by R. ondatrae cercariae (13). Inasmuch as fish can be infected by R. ondatrae also, it is possible this parasite could be introduced into aquatic systems when fish are released from hatcheries. Ribeiroia ondatrae was discovered in American bullfrog larvae at a warm-water fish hatchery in the southeastern United States (14).P972 Q 6-9 Passage1Title: Starting Points :Meeting the Needs of Our Youngest ChildrenChapter: The Quiet CrisisThe Quiet Crisiscross the United States, we are beginning to hear the rumblings of a quiet crisis. [See Quiet Crisis sidebar.] Our nation's children under the age of three and their families are in trouble, and their plight worsens every day.To be sure, the children themselves are not quiet; they arecrying out for help. And their parents' anxieties about inadequate child care and the high cost of their child's health care can be heard in kitchens, playgrounds, pediatricians' waiting rooms, and workplace cafeterias across the nation. But these sounds rarely become sound-bites. Babies seldom make the news: they do not commit crimes, do drugs, or drop out of school. We don't hear interviews with parents as they anguish over finding decent, affordable child care; we don't notice the unmet prenatal needs of expectant mothers. Policymakers are rarely forced to contend with these realities. And so, the problems of our youngest children and their parents remain a quiet crisis.Consider the state of America's youngest children and their families. In 1993 the National Educational Goals Panel reported that nearly half of our infants and toddlers start life at a disadvantage and do not have the supports necessary to grow and thrive. A significant number of children under three confront one or more major risk factors:1.Inadequate prenatal care. Nearly a quarter of all pregnant women in America, many of whom are adolescents, receive little or no prenatal care. Many of these pregnancies are unintended: the United States has one of the highest rates of unintended pregnancy in the industrialized world. The risk of delivering a low-birthweight baby with physical, behavioral, or intellectual difficulties is greater when a pregnancy is unplanned or when a woman does not receive adequate prenatal care.2.Isolated parents. More divorces, more single-parent families, and less familial and community support have made parents feel more isolated than ever before in raising their young children.3.Substandard child care. More than half of all mothersreturn to the workforce within a year of the baby'sbirth; many of their infants and toddlers spend thirty-five or more hours per week in substandard child care.4.Poverty. A quarter of families with children under age three live in poverty. The large majority of these families are headed by one parent, usually the mother. These families often live in unsafe neighborhoods and have poor access to quality child care, health services, or family support programs.5.Insufficient attention. Only half of infants and toddlers are routinely read to by their parents, and many parents give insufficient attention to their children's intellectual development. Teachers report that one in three American kindergartners arrives in school unprepared to learn.These numbers add up to a crisis that threatens not only the healthy development of children themselves but also our nation's well-being. The National Educational Goals Panel identified four key dimensions of school readiness, our nation's first education goal: physical well-being and motor development, social and emotional development, language usage, and the mastering of learning styles that allow children to approach new tasks and challenges effectively. Currently too many children are entering school not ready to learn, jeopardizing later academic achievement. If left unattended, this crisis will ultimately compromise our nation's economic strength and competitiveness. The Carnegie Task Force on Meeting the Needs of Young Children urges a national response to this quiet crisis. These early years are perhaps the most neglected. There are no clearly defined institutions such as preschools or schools to serve young children and their families. Health, educational, and social service agencies work independently and sometimes at cross-purposes. The problems are many, and massive; not one lends itself to a single solution. But the task force has proceeded from the assumption that, given sufficient focus and sufficient political will, America can begin to find its way toward solutions. Our nation can formulate and implement social policy that responds, over time, to the most urgent needs of our youngest children and their families. They need our compassion and our help, and we, as a nation, have an incalculable stake in their well-being.The Critical Importance of the First Three YearsThe first three years of life appear to be a crucial "starting point"--a period particularly sensitive to the protective mechanisms of parental and family support.[See Being Three sidebar.] Parents and experts have long known that how individuals function from the preschool years all the way through adolescence and even adulthood hinges, to a significant extent, on the experiences children have in their first three years. Babies raised by caring, attentive adults in safe, predictable environments are better learners than those raised with less attention in less secure settings. Recent scientific findings corroborate these observations. With the help of powerful new research tools, including sophisticated brain scans, scientists have studied the developing brain in greater detail than ever before. This research points to five key findings that should inform our nation's efforts to provide our youngest children with a healthy start: .................................... ..........................................Being Three: Milestones for Early Growth and Development For millennia, parents have recognized the newborn's basic need for safety, nourishment, warmth,and nurturing. Now science has added stunning revelations about human development from birth to age three, confirming that parentsand other adult caregivers play a critical role in influencing the child's development.The importance of the first three years of life lies in the pace at which the child is growingCompetent three-year-olds are1.Self-confident and trusting2.Intellectually inquisitive3.Able to use language to communicate4.Physically and mentally healthy5.Able to relate well to others6.Empathic toward othersThese attributes add up to a good start in life and learning.In no other period do such profound changes occur so rapidly: the newborn grows from a completely dependent human being into one who walks, talks, plays, and explores. The three-year-old is learning and, perhaps more important, is learning how to learn. At age three, children can--given good care and sufficient stimulation--attain a high degree of "competency."。

特斯拉电动汽车用户手册说明书

特斯拉电动汽车用户手册说明书

visit /zonedrooftopsystemsEf fi cient system operationTrane® Zoned Rooftop Systems take advantage of the newest technologies to improve comfort and increase ef fi ciency in small buildings.Trane rooftop units are available in a range of ef fi ciency tiers to match your budget and energy use goals. Variable-speed technologies areavailable to adjust compressor and fan speeds to more precisely match load requirements. This improves comfort in the space while reducing energy use at the same time. Zoned Rooftop Systems also offer integrated demand-controlled ventilation and economizer free cooling, further reducing energy use.To fully capitalize on the performance bene fi ts offered by these advanced technologies, integrated system control is a vital part of the solution. The Tracer® Concierge™ control system provides advanced optimization strategies to reduce energy use while improving occupant comfort, and is smart enough to let you know when service is needed to sustain optimal performance.Cost-effective, superior comfort for small buildingsTrane® Zoned Rooftop Systems are available in single- or multiple-zone con fi gurations to provide cost-effective comfort control for different areas of the building with varying comfort needs.The Tracer® Concierge™ control system offers the bene fi ts of a building automation system—without the complexity—and goes beyond managing individual rooms by operating the building smartly and ef fi ciently. It provides advanced capabilities for multiple-zone systems, is easy to use, and offers worry-free operation.Easy to design, install, and operatePackaged rooftop units provide cooling, heating, and ventilation in a single piece of equipment, simplifying system design, installation, and maintenance.Trane® Zoned Rooftop Systems use pre-engineered components and factory-installed controls that are designed to work together, contributing to on-time and on-budget installation. They use familiar components and are easy to recon fi gure if the space use changes in the future.The pre-packaged Tracer® Concierge™ system control panel, with its auto-discovery and con fi guration capabilities, allows for easier and faster installation. It includes an intuitive, easy-to-use operator interface on a 10-inch touchscreen display, along with mobile apps that allow the operator or service provider to manage the building from anywhere.The use of Air-Fi® Wireless controls results in faster project completion, increased sensor location fl exibility, greater reliability due to self-healing mesh networking, and easier relocation to accommodate future space use changes.ZO N E D R O O F TO P S YS T E M SLight commercial rooftop systems from TraneTrane® Zoned Rooftop Systems provide customers with affordable options for small buildings, to increase comfort and ef fi ciency, whilesimplifying maintenance.VAV terminal units (200 to 8000 cfm)• Trane fl ow ring provides unmatched air fl ow measurement accuracy and control • Durable, heavy-gauge air valve cylinder• modulating control• Air-Fi® Wireless communications • Retro fit dampers available for upgrading existing systemsTrane - by Trane Tech nologies (NYSE: TT), a global climate innovator - creates comfortable, energy efficient indoor environments for commercial and residential applications. For more information, please visit or .Trane h as a policy of continuous product and product data improvement and reserves th e righ t to ch ange design and specifications without notice. We are committed to using environmentally conscious print practices.All trademarks referenced are the trademarks of their respective owners.©2020 Trane. All Rights Reserved. ENV-SLB024C-ENNovember 5, 2020•single piece of equipment• able-speed fan control• Three tiers of effi ciency: standard, high, or ultra-high•••Pre-programmed, factory-installed ReliaT el™ DDC controls with wired or Air-Fi® Wireless communicationsAir-Fi® Wireless controls• Eliminates wires between equipment controllers and zone sensors, and between equipment and system controllers, allowing for faster installation, increased location fl exibility, and easier relocation• Self-healing wireless mesh and extended signal range maximize reliability• Supports open communication protocols through conformance with ASHRAE® Standard 135 (BACnet®/ZigBee®)• Up to four sensing functions in one zone sensor: temperature, humidity, occupan-cy, and CO 2• 15-year lifetime batteries。

高级英语(第三版)第二册第十三课 The Mansion A Subprime Parable

高级英语(第三版)第二册第十三课 The Mansion A Subprime Parable
• His bestselling books include The Big Short: Inside the Doomsday Machine, Liar's Poker, The New New Thing, Moneyball: The Art of Winning an Unfair Game, The Blind Side: Evolution of a Game, Panic, Home Game: An Accidental Guide to Fatherhood and Boomerang.
Negative Effects on Economy
●Stock market declines further reduce household wealth
Liquidity Crunch (不足)
for Businesses
Bank Failures
Bank Capital Levels Depleted
…the result is a forest of For Sale signs and an army of workers…distances
As a result , lots of houses were put up for sale but very few people want to buy houses, and so a large group of workers had to travel long distances back and forth between home and work place. Forest: Something resembling a forest, especially in profusion and lushness. Army: a great multitude. Commute: to travel back and forth regularly.
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。


Electronic documents are more difficult to dispose of than paper documents Deleting a data file does NOT actually delete the file from the computer’s hard drive, it changes the status of that storage location to unused




A chain of custody includes documenting all of the serial numbers of the systems and devices involved Who handled the systems and for how long How systems were shipped and stored
Excomputer forensics expert creates a mirror image of system, original system should be secured and the mirror image examined to reveal evidence All exposed application data should be examined for clues (documents, spreadsheets, email, digital photographs, cookies, cache…) Microsoft Windows operating systems use Windows page file as a “scratch pad” to write data when sufficient RAM is not available
/wiki/Computer_forensics
Securing the Crime Scene
Physical surroundings of the computer should be clearly documented Photographs of the area should be taken before anything is touched Cables connected to the computer should be labeled to document the computer’s hardware components and how they are connected Team takes custody of the entire computer along with the keyboard and any peripherals
Responding to a Computer Forensics Incident

Generally involves four basic steps similar to those of standard forensics:

Secure the crime scene Collect the evidence Establish a chain of custody Examine and preserve the evidence
Chapter 13: Advanced Security and Beyond
Security+ Guide to Network Security Fundamentals Second Edition
Objectives
Define computer forensics Respond to a computer forensics incident Harden security through new solutions List information security jobs and skills


Contents of RAM Current network connections Logon sessions Network configurations Open files
/forensics/forensic-discovery/ http://ntsecurity.nu/onmymind/2006/2006-06-01.html

Multiple sectors make up a cluster

When a file saved is not long enough to fill up the last sector, Windows pads the remaining sector space (for that cluster) with data that is currently stored in RAM
Computer forensics creates opportunities to uncover evidence impossible to find using a manual process One reason that computer forensics specialists have this opportunity is due to the persistence of evidence

Mirror image backups are considered a primary key to uncovering evidence; they create exact replicas of the computer contents at the crime scene
/def2.html
/how-create-mirror-image-your-hard-438.html
Establishing the Chain of Custody
As soon as the team begins its work, they must start and maintain a strict chain of custody Chain of custody documents that evidence was under strict control at all times and no unauthorized person was given the opportunity to corrupt the evidence

By default, XP creates a page file which is 1.5 times the amount of installed RAM pagefile.sys
These files can contain remnants of work done in past Special programs are needed to search through the page file quickly

Understanding Computer Forensics
Computer forensics can attempt to retrieve information— even if it has been altered or erased —that can be used in the pursuit of the criminal The interest in computer forensics is heightened:
Mirror Image Backups

Mirror image backups must meet the following criteria:


Mirror image software should only be used by trained professionals Those using the mirror image software must have evidence handling experience The mirror imaging tools must be able to find any bad sectors on the original drive that may cause problems for the imaging software Forensic imaging done in a controlled manner Imaging personnel should be a disinterested thirdparty

Preserving the Data
Computer forensics team first captures any volatile data that would be lost when computer is turned off and moves data to a secure location Includes any data not recorded in a file on the hard drive or an image backup:

/forensics/forensic-discovery/chapter8.html
Windows Page File

Windows page files can range from 1 megabyte to over a gigabyte in size and can be temporary or permanent
RAM slack 2. File slack /def7.html /def6.html
1.
RAM Slack

Windows stores files on a hard drive or other media type in 512-byte sectors
相关文档
最新文档