927 resultados para Stock price forecasting -- United States -- Computer simulation


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Gaines’ legal team, led by Houston, had faith in the justice system of the United States and anticipated getting a fair trial at the federal level. So far, all decisions had occurred in Missouri, a state with a segregated system.The fact that Gaines v Canada had reached the Supreme Court was promising indeed. It was rare that any case involving African-Americans would be considered by the highest court in the land. President Franklin D. Roosevelt had been appointing Justices that were more willing to consider cases concerned with civil rights. On November 9, 1938, the Supreme Court of the United States heard arguments in the Gaines v Canada case. The defense was unmoved by the rude treatment and made their presentation with professionalism and aplomb. Houston’s argument remained steadfast; not only was the state of Missouri’s statute concerning out-of-state tuition for blacks in violation of the 14th Amendment, but the very idea of segregation itself violated the Constitution. William Hogsett, the attorney for the University of Missouri, countered that the school was merely following state laws. The MU legal team was flustered as questions from the bench forced them to correct overstatements regarding Missouri’s “generosity to Negro students”. With crossed fingers and high hopes, the Gaines legal team rested their case and awaited the verdict. Meanwhile, Lloyd Gaines was still in Michigan. Lloyd held a W.P.A. job as a Civil Service Clerk and was in constant contact with his family and attorneys. His mood in his correspondence was hopeful and positive.

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High-resolution video microscopy, image analysis, and computer simulation were used to study the role of the Spitzenkörper (Spk) in apical branching of ramosa-1, a temperature-sensitive mutant of Aspergillus niger. A shift to the restrictive temperature led to a cytoplasmic contraction that destabilized the Spk, causing its disappearance. After a short transition period, new Spk appeared where the two incipient apical branches emerged. Changes in cell shape, growth rate, and Spk position were recorded and transferred to the fungus simulator program to test the hypothesis that the Spk functions as a vesicle supply center (VSC). The simulation faithfully duplicated the elongation of the main hypha and the two apical branches. Elongating hyphae exhibited the growth pattern described by the hyphoid equation. During the transition phase, when no Spk was visible, the growth pattern was nonhyphoid, with consecutive periods of isometric and asymmetric expansion; the apex became enlarged and blunt before the apical branches emerged. Video microscopy images suggested that the branch Spk were formed anew by gradual condensation of vesicle clouds. Simulation exercises where the VSC was split into two new VSCs failed to produce realistic shapes, thus supporting the notion that the branch Spk did not originate by division of the original Spk. The best computer simulation of apical branching morphogenesis included simulations of the ontogeny of branch Spk via condensation of vesicle clouds. This study supports the hypothesis that the Spk plays a major role in hyphal morphogenesis by operating as a VSC—i.e., by regulating the traffic of wall-building vesicles in the manner predicted by the hyphoid model.

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The 1982–1994 National Long-Term Care Surveys indicate an accelerating decline in disability among the U.S. elderly population, suggesting that a 1.5% annual decline in chronic disability for elderly persons is achievable. Furthermore, many risk factors for chronic diseases show improvements, many linked to education, from 1910 to the present. Projections indicate the proportion of persons aged 85–89 with less than 8 years of education will decline from 65% in 1980 to 15% in 2015. Health and socioeconomic status trends are not directly represented in Medicare Trust Fund and Social Security Administration beneficiary projections. Thus, they may have different economic implications from projections directly accounting for health trends. A 1.5% annual disability decline keeps the support ratio (ratio of economically active persons aged 20–64 to the number of chronically disabled persons aged 65+) above its 1994 value, 22:1, when the Hospital Insurance Trust Fund was in fiscal balance, to 2070. With no changes in disability, projections indicate a support ratio in 2070 of 8:1—63% below a cash flow balance.