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Search Results: 1 - 10 of 1850 matches for " Dov-Ron Schatzberg "
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On the complexity of traffic judges' decisions
David Leiser,Dov-Ron Schatzberg
Judgment and Decision Making , 2008,
Abstract: Professional judges in traffic courts sentence many hundreds of offenders per year. Using 639 case files from archives, we compared the Matching Heuristic (MH) to compensatory, weighing algorithms (WM). We modeled and cross validated the models on different subsets of the data, and took several other methodological precautions such as allowing each model to select the optimal number of variables and ordering and weighing the variables in accordance to different logics. We did not reproduce the finding by Dhami (2003), who found the MH to be superior to a compensatory algorithm in modeling bail-granting decisions. These simulations brought out the inner logic of the two family of models, showing what combination of parameters works best. It remains remarkable that using only a fraction of the variables and combining them non-compensatorily, MH obtained nearly as good a fit as the weighing method.
Bundling Equilibrium in Combinatorial auctions
Ron Holzman,Noa Kfir-Dahav,Dov Monderer,Moshe Tennenholtz
Computer Science , 2002,
Abstract: This paper analyzes individually-rational ex post equilibrium in the VC (Vickrey-Clarke) combinatorial auctions. If $\Sigma$ is a family of bundles of goods, the organizer may restrict the participants by requiring them to submit their bids only for bundles in $\Sigma$. The $\Sigma$-VC combinatorial auctions (multi-good auctions) obtained in this way are known to be individually-rational truth-telling mechanisms. In contrast, this paper deals with non-restricted VC auctions, in which the buyers restrict themselves to bids on bundles in $\Sigma$, because it is rational for them to do so. That is, it may be that when the buyers report their valuation of the bundles in $\Sigma$, they are in an equilibrium. We fully characterize those $\Sigma$ that induce individually rational equilibrium in every VC auction, and we refer to the associated equilibrium as a bundling equilibrium. The number of bundles in $\Sigma$ represents the communication complexity of the equilibrium. A special case of bundling equilibrium is partition-based equilibrium, in which $\Sigma$ is a field, that is, it is generated by a partition. We analyze the tradeoff between communication complexity and economic efficiency of bundling equilibrium, focusing in particular on partition-based equilibrium.
RESQ for FLASHMEM, Inc.: An IS Teaching Case
Laurie Schatzberg
Informing Science The International Journal of an Emerging Transdiscipline , 1999,
Abstract: Their manager has promised that the aging factory would be the first to implement RESQ, a resource estimator and scheduler developed in-house at FLASHMEM, Inc. While RESQ clearly fills an urgent need for better CPU utilization and management decision-making, Jamie Barton and Angelo Rodriguez now recognize the impossibility of the current plan for their factory. The case provides a brief history of RESQ and background of the players and culminates in the meeting between the IS and the manufacturing members of an IS development team. It focuses readers on some pervasive analyst-user issues including their respective roles in the development process, project management, the role of IS in a mature/commodity industry, vulnerabilities arising from in-house developed systems, and the implications of enforcing company-wide application standards.
Cultural Heritage and Flood Need of Interdisciplinarity  [PDF]
Klára Nedvědová
Journal of Water Resource and Protection (JWARP) , 2013, DOI: 10.4236/jwarp.2013.54A004

This contribution discusses some results of the ongoing research focused on the protection of cultural heritage from flood danger. The research project Methodology of Protection and Rescue of Cultural Heritage against Flood takes place in the Czech Republic and is focused on specific regional problems that have been experienced during and after disastrous floods in past 15 years. However, the lessons learned have wider applicability to the issue of flood protection of cultural heritage. Here, we describe two case studies that represent important issues requiring a solution; addressing these issues was the main motivation for the whole project.

Atherogenesis, the oxidative LDL modification hypothesis revisited  [PDF]
Dov Lichtenberg, Ilya Pinchuk
Advances in Bioscience and Biotechnology (ABB) , 2013, DOI: 10.4236/abb.2013.411A2007

The commonly-accepted “oxidized LDL hypothesis of atherogenesis” is based on a large number of indirect evidence that shows that oxidatively-modified LDL plays a role in atherogenesis. Yet, the exact role is not clear. Some researchers think that oxidatively modified biomolecules initiate atherogenesis; others believe that they “only” promote this multifactorial process. Regardless of the exact mechanism responsible for the effect of peroxidation on atherogenesis, the “oxidative theory of AS” is apparently inconsistent with the results of meta-analysis, in which (the “expected”) significant correlation between CVD and oxidative stress (OS) was found only when the OS was evaluated on the basis of the plasma concentrations of malondialdehyde (MDA), often based on the concentration of thiobarbituric acid reactive substances (TBARS). Notably, even this association is questionable due to 1) poor reliability of the laboratory assay of MDA and 2) possible publication bias. Hence, it appears that the commonly accepted paradigm regarding the role of oxidative damage in the pathogenesis of CVD has been overestimated. Furthermore, the hypothesis is apparently inconsistent with the disappointing results of most of the clinical trials that were designed to reduce OS by means of supplementation of antioxidants, mostly vitamin E. These apparent inconsistencies do not contradict the oxidative modification hypothesis of AS. The source of the apparent contradictions is probably the oversimplified considerations on which the predictions have been based. Many reasonable arguments can be raised to explain the apparent contradictions, which means that our current knowledge is insufficient to test the relationship of oxidative stress to cardiovascular disease.

1. Address the what to do. 2. Income generation is first priority
Dov Pasternak
Ecology and Society , 2003,
A preocupa o com as novas gera es
Dov Goldenberg
Revista Brasileira de Cirurgia Plástica , 2011, DOI: 10.1590/s1983-51752011000200001
Indexa o na SciELO: uma etapa cumprida e n o a meta final
Dov Goldenberg
Revista Brasileira de Cirurgia Plástica , 2010, DOI: 10.1590/s1983-51752010000400001
A autoria dos trabalhos científicos
Dov Goldenberg
Revista Brasileira de Cirurgia Plástica , 2011, DOI: 10.1590/s1983-51752011000100002
Multigrid solution of a path integral formulation for the hydrogen atom
Dov Bai
Physics , 2004,
Abstract: An efficient multigrid Monte-Carlo algorithm for calculating the ground state of the hydrogen atom using path integral is presented. The algorithm uses a unigrid approach. The action integral near r=0 is modified so that the correct values of observables are obtained. It is demonstrated that the critical slow down (CSD) is eliminated. Finally, the algorithm is compared to the staging algorithm.
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