An Overview of a Grid Architecture for Scientific Computing

This document gives an overview of a Grid testbed architecture proposal for the NorduGrid project. The aim of the project is to establish an inter-Nordic testbed facility for implementation of wide area computing and data handling. The architecture is supposed to define a Grid system suitable for solving data intensive problems at the Large Hadron Collider at CERN. We present the various architecture components needed for such a system. After that we go on to give a description of the dynamics by showing the task flow

IBM: parameter symmetry, hidden symmetries and transformations of boson operators

A symmetry of the parameter space of interacting boson models IBM-1 and IBM-2 is studied. The symmetry is associated with linear canonical transformations of boson operators, or, equivalently, with the existence of different realizations of the symmetry algebras of the models. The relevance of the parameter symmetry to physical observables is discussed.Comment: LATEX, 11 pages including 1 eps figure and 1 table prepared as an eps figure; a talk given by A. M. Siirokov at XXII Symposium on Nuclear Physics, Oaxtepec, Morelos, M\'exico, 5--8 January, 1999; to be published in Revista Mex. Fi

Examining signals of trust in criminal markets online

This study examines the signals of trust in stolen data advertisements by analysing the structural and situational factors that influence the type of feedback sellers receive. Specifically, this article explores the factors associated with positive and negative buyer feedback from the purchase of stolen credit card data in a series of advertisements from a sample of Russian and English language forums where individuals buy and sell personal information. The results of zero-inflated Poisson regression models suggest that the sellers may influence their likelihood of receiving feedback by specifying the type of payment mechanism, choosing the advertisement language and selecting the type of market they operate within. The implications of this study for our understanding of online illicit markets, criminological theory and policy-making will be explored in depth.Department of Homeland Security (DHS) Science and Technology Directorate, Cyber Security Division (DHSSandT/ CSD) Broad Agency Announcement 11.02, the Government of Australia and SPAWAR Systems Center Pacific [N66001-13-C-0131]; National Institute of Justice, Office of Justice Programs, US Department of Justice [2010-IJ-CX-1676, 2010]This is the final version of the article. It first appeared from Oxford University Press via https://doi.org/10.1093/cybsec/tyw00

On the T-Odd Quark Fragmentation Function and on Transversal Handedness

The first probe of the correlation of the T-odd one-particle fragmentation function responsible for the left--right asymmetry of fragmentation of a transversely polarized quark is done by using the 1991-95 DELPHI data for $Z\to 2$-jet decay. Integrated over the fraction of longitudinal and transversal momenta, this correlation is of 1.5% order, which means order of 13% for the analyzing power. A rather large ($\approx 10$) handedness transversal to the production plane was observed in the diffractive production of ($\pi^-\pi^+\pi^-$) triples from nuclei by the $40 GeV/c \pi^-$--beam. It was shown that the phenomenon has a clear dynamic origin and resembles the single spin asymmetry behavior. All this makes us hope to use this effects in polarized DIS experiments for transversity measurement.Comment: 10 pp, 5 epsfig, Latex 2e, szjp.cls, epsfig.sty, wrapfig.sty included. Talk in "Spin and Symmetry - Praha98". To be published in Czechoslovak Journal of Physics, Supp

О Модернизации Жилищного Законодательства И Построении Эффективных Финансовых Моделей Управления Многоквартирными Домами В Современной России

The article substantiates a set of proposals for amending housing legislation aimed at building effective financial models of various ways to manage apartment buildings in modern Russia. The implementation of the proposals will allow the creation of financially sustainable management organizations in the housing and utilities sector, who receive their remuneration in legal form and are interested in the results of their financial and economic activities. The study was carried out with the financial support of the Russian Foundation for Basic Research in the framework of the research project No. 18-010-00090 “Study of the financial and economic aspects of the activities of management companies in the housing and utilities sector and the development of proposals to improve their financial sustainability.”El artículo respalda un conjunto de propuestas para enmendar la legislación de vivienda con el objetivo de construir modelos financieros efectivos de varias maneras de administrar edificios de apartamentos en la Rusia moderna. La implementación de las propuestas permitirá la creación de organizaciones de gestión financieramente sostenibles en el sector de vivienda y servicios públicos, que reciben su remuneración en forma legal y están interesados en los resultados de sus actividades financieras y económicas. El estudio se realizó con el apoyo financiero de la Fundación Rusa para la Investigación Básica en el marco del proyecto de investigación Nº 18-010-00090 "Estudio de los aspectos financieros y económicos de las actividades de las empresas de gestión en el sector de la vivienda y los servicios públicos. y el desarrollo de propuestas para mejorar su sostenibilidad financiera ". В статье обосновывается комплекс предложений по изменению жилищного законодательства, направленного на построение эффективных финансовых моделей различных способов управления многоквартирными домами в современной России. Реализация предложений позволит создать финансово устойчивые управляющие организации сферы ЖКХ, получающие свое вознаграждение в легальной форме и заинтересованные в результатах своей финансово-хозяйственной деятельности.   Исследование выполнено при финансовой поддержке Российского фонда фундаментальных исследований в рамках научного проекта № 18-010-00090 «Исследование финансово-экономических аспектов деятельности управляющих компаний в сфере ЖКХ и разработка предложений по повышению их финансовой устойчивости»

The NorduGrid architecture and tools

The NorduGrid project designed a Grid architecture with the primary goal to meet the requirements of production tasks of the LHC experiments. While it is meant to be a rather generic Grid system, it puts emphasis on batch processing suitable for problems encountered in High Energy Physics. The NorduGrid architecture implementation uses the \globus{} as the foundation for various components, developed by the project. While introducing new services, the NorduGrid does not modify the Globus tools, such that the two can eventually co-exist. The NorduGrid topology is decentralized, avoiding a single point of failure. The NorduGrid architecture is thus a light-weight, non-invasive and dynamic one, while robust and scalable, capable of meeting most challenging tasks of High Energy Physics.Comment: Talk from the 2003 Computing in High Energy Physics and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, 9 pages,LaTeX, 4 figures. PSN MOAT00

CEP-stable Tunable THz-Emission Originating from Laser-Waveform-Controlled Sub-Cycle Plasma-Electron Bursts

We study THz-emission from a plasma driven by an incommensurate-frequency two-colour laser field. A semi-classical transient electron current model is derived from a fully quantum-mechanical description of the emission process in terms of sub-cycle field-ionization followed by continuum-continuum electron transitions. For the experiment, a CEP-locked laser and a near-degenerate optical parametric amplifier are used to produce two-colour pulses that consist of the fundamental and its near-half frequency. By choosing two incommensurate frequencies, the frequency of the CEP-stable THz-emission can be continuously tuned into the mid-IR range. This measured frequency dependence of the THz-emission is found to be consistent with the semi-classical transient electron current model, similar to the Brunel mechanism of harmonic generation

Comparative characteristics of cytokine regulation in patients with gastric diseases associated with <i>Helicobacter pylori</i> infection

When the body is infected with the bacterium Helicobacter pylori, a cytokine cascade is launched, which plays a key role in the progression of chronic inflammatory and destructive processes in the gastric mucosa. Thus, the secretion of a number of cytokines is stimulated, which in turn contribute to the attraction of immunocompetent cells and the development of inflammatory changes. However, hyperproduction of cytokines can lead to atrophic changes in the gastric mucosa and, as a result, degeneration into gastric cancer. Thus, the role of cytokines in precancerous conditions is ambiguous. On the one hand, they activate the immune response aimed at eliminating the pathogen. On the other hand, they themselves contribute to the progression of the disease.The complex clinical and laboratory study included patients: 60 with chronic gastritis (CG), 55 with chronic atrophic gastritis (CAG), 50 with gastric cancer (GC, stage I-II, morphological variant – adenocarcinoma) and 60 – control group. The diagnoses were verified according to international and Russian recommendations and confirmed by laboratory and instrumental studies. All patients were comparable in terms of gender and age characteristics (p &gt; 0.05). All patients had specific IgG to H. pylori. The study was approved by the Local Ethics Committee of the FRC KSC SB RAS (protocol No. 11 dated November 11, 2013). All ethical requirements were observed, and the patients signed the informed consent form for participation. Patients and persons of the control group underwent a single blood sampling from the cubital vein upon admission to vacutainers with heparin.The levels of IL-2, IL-4, IL-8, TNFα, interferon-γ in the blood serum of patients and healthy individuals were determined using the enzyme immunoassay method using reagent kits manufactured by JSC “VectorBest”. Statistical data processing was carried out using the Statistica for Windows 8.0 application package.All patients with H. pylori-associated diseases (CG, CAG, GC) showed an increase in pro-inflammatory (IL-2, IL-8, IFNγ) with a significant increase in IL-8 in all patients and IFNγ in gastric cancer and antiinflammatory cytokine (IL-4) with a maximum value in gastric cancer. A combined Th1 and Th2 is found – a mediated immune response with a maximum violation of cytokine regulation in gastric cancer

Atlas Data-Challenge 1 on NorduGrid

The first LHC application ever to be executed in a computational Grid environment is the so-called ATLAS Data-Challenge 1, more specifically, the part assigned to the Scandinavian members of the ATLAS Collaboration. Taking advantage of the NorduGrid testbed and tools, physicists from Denmark, Norway and Sweden were able to participate in the overall exercise starting in July 2002 and continuing through the rest of 2002 and the first part of 2003 using solely the NorduGrid environment. This allowed to distribute input data over a wide area, and rely on the NorduGrid resource discovery mechanism to find an optimal cluster for job submission. During the whole Data-Challenge 1, more than 2 TB of input data was processed and more than 2.5 TB of output data was produced by more than 4750 Grid jobs.Comment: Talk from the 2003 Computing in High Energy Physics and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, 7 pages, 3 ps figure