On the Disalignment of Interstellar Grains

Several mechanisms have been proposed to explain the alignment of grains with the interstellar magnetic field, including paramagnetic dissipation, radiative torques, and supersonic gas-grain streaming. These must compete with disaligning processes, including randomly directed torques arising from collisions with gas atoms. I describe a novel disalignment mechanism for grains that have a time-varying electric dipole moment and that drift across the magnetic field. Depending on the drift speed, this mechanism may yield a much shorter disalignment timescale than that associated with random gas atom impacts. For suprathermally rotating grains, the new disaligning process may be more potent for carbonaceous dust than for silicate dust. This could result in efficient alignment for silicate grains but poor alignment for carbonaceous grains.Comment: 19 pages, 3 figures, submitted to Ap

Undetected Delinquent Behavior

The article discusses an interview method designed to measure delinquent behavior directly from the confidential confessions of teen-agers. The method is described and results are presented from a validation study of 125 undetected delinquents. Applica tion of the measure is illustrated with findings from a study of 522 randomly selected boys and girls, thirteen to sixteen years old, residing in Flint, Mich. Conclusions are drawn about the relationship between delinquency and social status and sex, and about the validity of official records.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/68956/2/10.1177_002242786600300103.pd

A Time for Skepticism

Specific research findings are introduced to demonstrate the absence of reliable data supporting claims for the effectiveness of delinquency treatment programs currently in use. Progress in this field will be encouraged if those responsible for treatment programs apply various techniques with a great deal of skepticism, testing their effectiveness systematically and evaluating them ob jectively. Continued innovation is urged, but cast in the form of careful field experimentation.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/67860/2/10.1177_001112877402000105.pd

A Model of Regulatory Burden in Technology Diffusion: The Case of Plant-Derived Vaccines.

Plant-derived vaccines may soon displace conventional vaccines. Assuming there are no major technological barriers undermining the feasibility of this innovative technology, it is worthwhile to generate quantitative models of regulatory burden of producing and diffusing plant-derived vaccines in industrialized and developing countries. A dynamic simulation model of technology diffusion—and the data to populate it—has been generated for studying regulatory barriers in the diffusion of plant-derived vaccines. The role of regulatory burden is evaluated for a variety of scenarios in which plant-derived vaccines are produced and diffused. This model relates the innovative and conventional vaccine technologies and the effects of the impact of the uptake of the innovative technology on mortality and morbidity. This case study demonstrates how dynamic simulation models can be used to assess the long-term potential impact of novel technologies in terms of a variety of socio-economic indicators.dynamic simulation model; plant-derived vaccines; regulatory burden; technology transfer; vaccines;

Interpretation: Article I, Section 5

In Article I of the Constitution, the Framers vest the legislative authority of the United States government in a bicameral Congress, and over the ten sections of the Article they systematically flesh out the structure, duties, and powers of that Congress. In the early sections of Article I they describe the membership of each House, giving life to the “Great Compromise” of the Constitutional Convention under which each state has equal representation in the Senate but population-based representation in the House of Representatives. In Section 5, they grant Congress the power to govern itself. Section 5 consists of four separate clauses, each of which addresses different practical aspects of legislative procedure

Устройство для сварки в динамическом режиме горения дуги

Рассмотрен процесс формирования импульсов сварочного тока, обеспечивающих устойчивое горение дуги в динамическом режиме. Разработано устройство с формирующим элементом, выполненным на базе искусственной формирующей линии. Проведены исследования при сварке неплавящимся электродом в среде аргона. Показаны преимущества сварного соединения при сварке дугой, горящей в динамическом режиме

Detection of Pedestrians' Behaviour from Videosequences

Import 22/07/2015Hlavním cílem této diplomové práce je vytvořit software, který by sloužil pro analýzu pohybu lidské postavy ve videosekvencích. Tato analýza bude zaměřena především na informace získané pomocí trajektorie detekované osoby. Vyhodnocovat se v tomto případě bude především rychlost a neobvyklý směr lidského pohybu.The main goal of this diploma work is to create software, which would analyze human figure in video sequences. This analysis will be especially aim on informations obtained from trajectory detected person. In this case we will primarily evaluate speed and unusual movement of human.460 - Katedra informatikyvýborn

Revising Type-2 Computation and Degrees of Discontinuity

By the sometimes so-called MAIN THEOREM of Recursive Analysis, every computable real function is necessarily continuous. Weihrauch and Zheng (TCS'2000), Brattka (MLQ'2005), and Ziegler (ToCS'2006) have considered different relaxed notions of computability to cover also discontinuous functions. The present work compares and unifies these approaches. This is based on the concept of the JUMP of a representation: both a TTE-counterpart to the well known recursion-theoretic jump on Kleene's Arithmetical Hierarchy of hypercomputation: and a formalization of revising computation in the sense of Shoenfield. We also consider Markov and Banach/Mazur oracle-computation of discontinuous fu nctions and characterize the computational power of Type-2 nondeterminism to coincide with the first level of the Analytical Hierarchy.Comment: to appear in Proc. CCA'0