Doppler Effect
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Competition among species, or interspecific competition, can have an even greater effect on selection than competition within species (intraspecific competition). This is often the case in lower density populations. Different species can have positive, neutral, or negative effects on each other's fitness, and the effect species 1 has on species 2 is not necessarily the same that 2 has on 1. The effects that cohabiting species have on each ...more
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In the last decade of the nineteenth century, malariology emerged as the most prestigious and intellectually exciting field in the new discipline of tropical medicine. The disease's complexity and resistance to conventional public health strategies posed a major challenge to doctors and scientists. Plague measures and social hygiene had no effect in curbing malaria, and the disease proved difficult to classify. The case of Italy, and the m...more
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Environmental Politics and Law (EVST 255) The military's use of the Puerto Rican island of Vieques as a training site is discussed to highlight the challenges involved in identifying and restoring hazardous sites. Political opposition is faced while attempting to get a site recognized as hazardous, deciding how to compensate those affected, and determining an appropriate level of environmental restoration. The recurring theme of governm...more
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Media and the Fertility Transition in Developing Countries (Guest Lecture by William Ryerson)
Yale / Biology
Guest lecturer William Ryerson is President of the Population Media Center which produces radio and TV serial dramas in developing countries that aim to effect behavior change on women's status, family planning and AIDS. Working with governments and in-country media professionals, these melodramas run for hundreds of episodes and are watched by millions. Careful research shows major changes in audience knowledge, attitudes and practices.
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Moving from C Code Generation to C++ Code Generation: Basic Swap Example
Stanford / Computer Science
Moving from C Code Generation to C++ Code Generation: Basic Swap Example, Code Generation for the Pointer Swap Function, Code Generation for the C++ Version Of Swap Using References, Which Are Treated as Automatically Dereferenced Pointers, Local Variables Declared as References, Difference Between References and Pointers, Effect Of Declaring a Class on Memory in the Stack, Class Methods, Which Take a "This" Pointer as An invisible First P...more
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Jung talks about the importance of empowering an entrepreneur's target audience in acquiring customers. Viral marketing is one of the ways to acquire and build loyal customers at a low cost, he adds.
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Neutral evolution occurs when genes do not experience natural selection because they have no effect on reproductive success. Neutrality arises when mutations in an organism's genotype cause no change in its phenotype, or when changes in the genotype bring about changes in the phenotype that do not affect reproductive success. Because neutral genes do not change in any particular direction over time and simply "drift," thanks in part to the...more
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(February 20, 2009) Michal Migurski and Tom Carden, both of Stamen Design, discuss the online maps their studio has put out, originating from Oakland Crimespotting. They present an overview of the project and its effect on our work, our thoughts on open source mapping code and wiki-style community maps.
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Professor McBride expands on the recently introduced concept of the wave function by illustrating the relationship of the magnitude of the curvature of the wave function to the kinetic energy of the system, as well as the relationship of the square of the wave function to the electron probability density. The requirement that the wave function not diverge in areas of negative kinetic energy leads to only certain energies being allowed, a p...more
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Reliable records of influenza, dating back to the 1700s, suggest a pattern of one major pandemic every century. Among the pandemics for which there is solid documentary evidence, the outbreak of 1918-1920 is by far the greatest. The so-called Spanish Lady caused somewhere between 25 and 100 million deaths worldwide. It is distinctive both for its high mortality rate, in comparison to other flu pandemics, and for its unusual demographic eff...more
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In this lecture Professor Sylvia Ceyer moves on from the wavelike properties of light, to the particle-like nature of light. To do so she covers the photoelectric effect in detail, discussing threshold frequency and kinetic energy vs. frequency. Planck's constant is discussed. The lectures concludes with a discussion of photon momentum and its relation to wavelength.
