structures
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Professor Diamond continues her discussion of the nervous system and begins by revisiting her discussion of the ascending path. She notes the presence of substantia gelatinosa in the area of the second neuron and describes the concept of homunculus, which is the upside-down representation of the body in the brain, and notes that this does not occur in the face for reasons unknown to neurologists. Professor Diamond then begins describing th...more
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In this lecture, Professor Mazzotta introduces Purgatory and proceeds with a close reading of Cantos I and II. The topography of Mount Purgatory is described, and the moral system it structures is contrasted with that of Hell. Dante's paradoxical choice of Cato, a pagan suicide, as guardian to the entrance of Purgatory ushers in a discussion of freedom from the standpoint of classical antiquity, on the one hand, and Judaism, on the other. ...more
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Half a century before direct experimental observation became possible, most structures of organic molecules were assigned by inspired guessing based on plausibility. But Wilhelm Körner developed a strictly logical system for proving the structure of benzene and its derivatives based on isomer counting and chemical transformation. His proof that the six hydrogen positions in benzene are equivalent is the outstanding example of this chemical...more
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Sheer brainpower, strength in numbers, and good old fashioned networking is how the nature of world influence is established. Skewed and disproportionate, modern power structures that regulate global problems happen only when the elite meet, says author David Rothkopf. And decisions made based on these meetings often do not adequately represent the people or the interests that they are meant to serve.
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Development is responsible for the complexity of multicellular organisms. It helps to map the genotype into the phenotype expressed by the organism. Development is responsible for ancient patterns among related organisms, and many structures important to development shared by many life forms have changed little over hundreds of millions of years. Development is expressed combinatorially, allowing a relatively small amount of genetic inform...more
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Youthful chemists Couper and Kekulé replaced radical and type theories with a new approach involving atomic valence and molecular structure, and based on the tetravalence and self-linking of carbon. Valence structures offered the first explanation for isomerism, and led to the invention of nomenclature, notation, and molecular models closely related to those in use today.
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Representing Structures of Organic Molecules.
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Professor Kleiner explores sepulchral architecture in Rome commissioned by the emperor, aristocrats, successful professionals, and former slaves during the age of Augustus. Unlike most civic and residential buildings, tombs serve no practical purpose other than to commemorate the deceased and consequently assume a wide variety of personalized and remarkable forms. The lecture begins with the round Mausoleum of Augustus, based on Etruscan p...more
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Principles of Good Software Engineering for Managing Large Amounts of Data
Stanford / Computer Science
Principles of Good Software Engineering for Managing Large Amounts of Data, Principles of Design, The Collection Hierarchy, Useful Methods of Collection, The FlyTunes Example Program - An Online Music Store, Defining the Song Class, Defining the Album Class, Seeing the Program Run, Considering the Data Structures Needed, Reusing Data - Shallow Copy vs. Deep Copy, The FlyTunesStore Program Code
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Continuing the discussion of Lewis structures and chemical forces from the previous lecture, Professor McBride introduces the double-well potential of the ozone molecule and its structural equilibrium. The inability for inverse-square force laws to account for stable arrangements of charged particles is prescribed by Earnshaw's Theorem, which may be visualized by means of lines of force. J.J. Thomson circumvented Earnshaw's prohibition on ...more
