data abstraction
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Example in Which Writing Past the End of Array Causes the Return Address of the Function to be Overwritten, Leading to An Infinite Loop, Example in Which Data Is Incorrectly Shared between Two Different Functions, But Can Still be Printed Out Due to the Structure of the Activation Record (Channelling), How Printf's Prototype Uses "...", Which Allows It to Take A Variable Number of Arguments, Why Parameters Are Pushed Onto the Stack From Ri...more
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Environmental Politics and Law (EVST 255) The United States government employed a variety of approaches to protect citizens from danger, including public education, nuclear weapons testing, and gathering data about the effects of nuclear testing. The US government's testing of nuclear weapons at the Bikini Atoll is used as an example of government approaches. Nuclear testing led to ecological devastation, leading the US government to mo...more
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Environmental Politics and Law (EVST 255) The lecture discusses developments in air quality monitoring and regulation in the United States, with an emphasis on regulating vehicle emissions. Monitoring takes place at fixed points with results being averaged over three years, and this data informs air quality standard setting. Studies have found that this form of monitoring underreports the amount of pollution that children and other susc...more
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A mortgage involves making a promise, backing it with collateral, and defining a way to dissolve the promise at prearranged terms in case you want to end it by prepaying. The option to prepay, the refinancing option, makes the mortgage much more complicated than a coupon bond, and therefore something that a hedge fund could make money trading. In this lecture we discuss how to build and calibrate a model to forecast prepayments in order to...more
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This lecture is about optimal exercise strategies for callable bonds, which are bonds bundled with an option that allows the borrower to pay back the loan early, if she chooses. Using backward induction, we calculate the borrower's optimal strategy and the value of the option. As with the simple examples in the previous lecture, the option value turns out to be very large. The most important callable bond is the fixed rate amortizing mortg...more
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XML Processing and Python - Two Different XML Processing Models, Example XML Fragment, How an XML Parser Uses Tag Handlers to Break Up an XML Stream, How Python Can Parse XML Streams Using Urlopen, Make_Parser, and Contenthandler, Defining a Listfeedtitles Function that Takes in a URL and Parses it Using a Parser and an Rsshandler, Contenthandler Interface, Implementing The Rsshandler Class, Which Subclasses Contenthandler, to Fit The Spec...more
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November 9, 2007 lecture by Monty Hamontree for the Stanford University Human-Computer Interaction Seminar. This talk delves into 5 interrelated keys that Microsoft teams focus on to elevate the impact of "design research". Namely how to: team insightfully as project teams; observe our users holistically; broker user and design patterns proudly; distill fresh insights collectively; and envision design essence vividly. A model of various de...more
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Lecture by Gary Segura and Simon Jackman for the Presidential Politics: Race, Class, Faith & Gender in the 2008 Election (CSRE12) course. Dr. Segura and Dr. Jackman explore the role of race in the 2008 election through survey and polling data.
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The visual system has developed to allow us to navigate in a complex and dangerous world in order to find food and to avoid danger. This survival system works by building a complex three-dimensional model based on two-dimensional data from the retina. This model is tested against "reality" and checked with information from other senses and updated if needed. The brain suppresses the complexity of this processing and we believe that visi...more
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Dell describes three critical inflection points in the business model of Dell, Inc.: 1) During the early stages of the company, expanding outside the United States, even though the company had very little capital and people; 2) An unprecedented on-site service program for PCs; and 3) Going into the server business. These decisions were made through fair amounts of discussion, data analysis, and observations of industry trends.
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Autodesk's vision is to keep the design data in digital format. Wireless industry is essential in this area. A small team of engineers at Autodesk banded together and built a wireless product on the fly to address an immediate need.
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Roizen makes it clear that VCs will not give all the money up front. It is important for startups to set milestones, and develop a relationship with a VC, she says. At Mobius, VCs collect data on all portfolio companies on a weekly basis to best understand their companies. They do so to improve their companies' performance.
