Williams College

About: Williams College is a education organization based out in Williamstown, Massachusetts, United States. It is known for research contribution in the topics: Population & Politics. The organization has 2257 authors who have published 5015 publications receiving 213160 citations. The organization is also known as: Williams.

Filtering approaches for real-time anti-aliasing

Abstract: For more than a decade, supersample anti-aliasing (SSAA) and multisample anti-aliasing (MSAA) have been the gold-standard anti-aliasing solutions in games However, these techniques are not well suited for deferred shading or fixed environments like the current generation of consoles In recent years, industry and academia have been exploring alternative approaches, where anti-aliasing is performed as a post-processing step The original, CPU-based morphological anti-aliasing (MLAA) method gave birth to an explosion of real-time anti-aliasing techniques that rival MSAAMost of these techniques share concepts and ideas, so the main goal of this course is to establish a conceptual link between them, identifying novelties and differences The presenters explain how sub-pixel data can be used to improve quality and performance tradeoffs at post-processing steps, which is a cutting-edge research area today The course includes an overview of both research and industry filter-based anti-aliasing techniques in games for all modern platforms (AMD and NVIDIA GPUs, PlayStation 3, and Xbox 360), low-level insight to ease adoption of these techniques and give attendees a complete concept-to-implementation roadmap, and deep quality, performance, and ease-of-integration comparisons of each technique

Molecular Cloning and Evidence for Osmoregulation of the Δ1-Pyrroline-5-Carboxylate Reductase (proC) Gene in Pea (Pisum sativum L.)

Abstract: Several cDNA clones encoding Δ1-pyrroline-5-carboxylate reductase (P5CR, l-proline:NAD[P]+ 5-oxidoreductase, EC 1.5.1.2), which catalyzes the terminal step in proline biosynthesis, were isolated from a pea leaf library screened with a 32P-labeled Aval fragment of a soybean nodule P5CR cDNA (A.J. Delauney, D.P.S. Verma [1990] Mol Gen Genet 221: 299-305). DNA sequence analysis of one full-length 1.3-kb clone (pPPS3) indicated that the pea P5CR gene contains a single major open reading frame encoding a polypeptide of 28,242 Da. Genomic analysis suggested that two to three copies of the P5CR gene are present per haploid genome in pea. The primary structure of pea P5CR is 85% identical with that of soybean and exhibits significant homology to human, yeast, and Escherichia coli P5CR. The sequence of one of four highly conserved domains found in all prokaryotic and eukaryotic P5CRs is similar to the consensus sequence for the NAD(P)H-binding site of other enzymes. The pea P5CR cDNA hybridized to two transcripts, 1.3 and 1.1 kb in size, in polyadenylated RNA purified from leaf tissues of mature, light-grown plants (4 weeks old). Only the 1.3-kb transcript was detected in younger (1 week old) greened seedlings or in etiolated seedlings. In greened seedlings, steady-state levels of this 1.3-kb mRNA increased approximately 5-fold in root tissues within 6 h after plants were irrigated with 0.4 m NaCl, suggesting that expression of the P5CR gene is osmoregulated.

Socioeconomic ramifications of changing cohort size: an analysis of U.S. postwar suicide rates by age and sex.

Abstract: This paper presents a relative cohort size model of suicide. The model states that as relative cohort size (the ratio of younger to older workers) rises, income and income aspirations diverge for the young. One possible extreme reaction to this disequilibrium is suicide. The model explains the variation in age- and sex-specific suicide rates for the United States over the period 1948 to 1976. It identifies the direct effect of changes in cohort size on suicide rates as well as the indirect effect operating through other demographic variables. The model predicts the suicide rates for males above 45 years of age to rise and those for all other groups to decline. For most groups this is a reversal of recent movements in their suicide rates.