639 research outputs found
Efficient permutation-based range-join algorithms on N-dimensionalmeshes using data-shifting
©2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.In this paper, we present two efficient parallel algorithms for computing a non-equijoin, range-join, of two relations an N-dimensional mesh-connected computers. The proposed algorithms uses the data-shifting approach to effectively permute every sorted subset of relation S to each processor in turn recursively in dimensions from low to high, where it is joined with the local subset of relation RShao Dong Chen, Hong Shen, Rodeny Topo
Strangeness Production in pp,pA,AA Interactions at SPS Energies.HIJING Approach
In this report we have made a systematic study of strangeness production in
proton-proton(pp),proton-nucleus(pA) and nucleus- nucleus(AA) collisions at
CERN Super Proton Synchroton energies, using \\ (version ). Numerical results for mean
multiplicities of neutral strange particles ,as well as their ratios to
negatives hadrons() for
p-p,nucleon-nucleon(N-N),\,\,p-S,\,\,p-Ag,\,\,p-Au('min. bias')collisions and
p-Au,\,\,S-S,\,\,S-Ag,\,\,S-Au ('central')collisions are compared to
experimental data available from CERN experiments and also with recent
theoretical estimations given by others models. Neutral strange particle
abundances are quite well described for p-p,N-N and p-A interactions ,but are
underpredicted by a factor of two in A-A interactions for
in symmetric collisions(S-S,\,\,Pb-Pb)and for
in asymmetric ones(S-Ag,\,\,S-Au,\,\,S-W). A
qualitative prediction for rapidity, transverse kinetic energy and transverse
momenta normalized distributions are performed at 200 GeV/Nucleon in
p-S,S-S,S-Ag and S-Au collisions in comparison with recent experimental data.
HIJING model predictions for coming experiments at CERN for S-Au, S-W and Pb-Pb
interactions are given. The theoretical calculations are estimated in a full
phase space.Comment: 33 pages(LATEX),18 figures not included,available in hard copy upon
request , Dipartamento di Fisica Padova,report DFPD-94-NP-4
Socio-economic status over the life-course and depressive symptoms in men and women in Eastern Europe
Objective: Research into social inequalities in depression has studied western populations but data from non-western countries are sparse. In this paper, we investigate the extent of social inequalities in depression in Eastern Europe, the relative importance of social position at different points of the life-course, and whether social patterning of depression differs between men and women.Method: A cross-sectional study examined 12,053 men and 13,582 women in Russia, Poland and the Czech Republic. Depressive symptoms (16 or above on the CESD-20) were examined in relation to socio-economic circumstances at three phases of the life-course: childhood (household amenities and father's education); own education; current circumstances (financial difficulties and possession of household items).Results: Pronounced social differences in depression exist in men and women throughout Eastern Europe. Depression was largely influenced by current circumstances rather than by early life or education, with effects stronger in Poland and Russia. Odds ratios in men for current disadvantage were 3.16 [95% CI: 2.57-3.89], 3.16 [2.74-3.64] and 2.17 [1.80-2.63] in Russia, Poland and the Czech Republic respectively. Social variables did not explain the female excess in depression, which varied from 2.91 [2.58-3.27] in Russia to 1.90 [1.74-2.08] in Poland. Men were more affected by adult disadvantage than women, leading to narrower sex differentials in the presence of disadvantage.Limitations: Cross-sectional data with recall of childhood conditions were used.Conclusion: Current social circumstances are the strongest influence on increased depressive symptoms in countries which have recently experienced social changes. (C) 2007 Elsevier B.V. All rights reserved
Statistical and Dynamic Models of Charge Balance Functions
Charge balance functions, which identify balancing particle-antiparticle
pairs on a statistical basis, have been shown to be sensitive to whether
hadronization is delayed by several fm/c in relativistic heavy ion collisions.
Results from two classes of models are presented here, microscopic hadronic
models and thermal models. The microscopic models give results which are
contrary to recently published pi+pi- balance functions from the STAR
collaboration, whereas the thermal model roughly reproduce the experimental
results. This suggests that charge conservation is local at breakup, which is
in line with expectations for a delayed hadronization. Predictions are also
presented for balance functions binned as a function of Q_inv.Comment: 12 pages 6 figure
Mining the smallest association rule set for predictions
©2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.Mining transaction databases for association rules usually generates a large number of rules, most of which are unnecessary when used for subsequent prediction. In this paper we define a rule set for a given transaction database that is much smaller than the association rule set but makes the same predictions as the association rule set by the confidence priority. We call this subset the informative rule set. The informative rule set is not constrained to particular target items; and it is smaller than the non-redundant association rule set. We present an algorithm to directly generate the informative rule set, i.e., without generating all frequent itemsets first, and that accesses the database less often than other unconstrained direct methods. We show experimentally that the informative rule set is much smaller than both the association rule set and the non-redundant association rule set, and that it can be generated more efficiently
Comment on ``Strangeness enhancement in and S interactions at energies near 200 GeV"
We argue that the recent analysis of strangeness production in nuclear
collisions at 200 GeV/ performed by Topor Pop {\it et al.} \cite{To:95}
is flawed. The conclusions are based on an erroneous interpretation of the data
and the numerical model results. The term ``strangeness enhancement" is used in
a misleading way.Comment: 4 pages REVTEX 3.0, no figures; Comment submitted to Physical Review
Modern anatomo–clinical argumentation of the a acupuncture as a method for analgesia
Catedra de anatomie topografică şi chirurgie operatorie, Universitatea de Stat de Medicină și Farmacie ”Nicolae Testemițanu”, Chișinău, Republica Moldova, Conferința Ştiinţifică Internaţională ”Probleme actuale ale morfologiei” dedicată celor 70 de ani de la fondarea Universității de Stat de Medicină și Farmacie „Nicolae Testemiţanu”, Chişinău, 15-16 octombrie 2015Abstract
Background: Acupuncture is a therapeutic method that comes from China and is based on the meridian’s theory.
Many analgesic drugs used for postoperative pain have a number of side effects. Acupuncture claims to develop a maximum therapeutic effect with reduced side effects.
Material and methods: Individualized set of acupuncture needles; visual analogical-scale; tonometer; thermometer;
questionnaire for evaluation of postoperative pain management; questionnaire for assessing the patient satisfaction about acute postoperative pain management; informed consent of the patient included in the study. The study included 14
patients who underwent a microsurgical intervention on the hand (amputation of two fingers). They were divided into
two. Patients of the first group received 3 sessions of acupuncture and Baralgin. Those in the second group followed only
promedol. Patients were evaluated according to objective and subjective criteria: visual-analogical scale (VAS), personal
convenience, blood pressure, temperature, respiratory rate, heart rate.
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Results: Patients who received acupuncture showed normalization of objective and subjective indicators and the
absence of any adverse effects.
Conclusions: 1. Acupuncture is a method of therapy based on stimulation of acupoints that frequently correspond
to nerve formations; 2. The analgesic effect of acupuncture allow the exclusion of opioid analgesics and use of minor analgesics for postoperative pain management; 3. Acupuncture in combination with minor analgesics provides postoperative
pain soothing and early improving of objective indicators
Do Search for Dibaryonic De - Excitations in Relativistic Nuclear Reactions
Some odd characteristics are observed in the single particle distributions
obtained from interactions at momenta which are
explained as the manifestation of a new mechanism of strangeness production via
dibaryonic de-excitations. A signature of the formation of hadronic and
baryonic clusters is also reported. The di-pionic signals of the dibaryonic
orbital de-excitations are analyzed in the frame of the MIT - bag Model and a
Monte Carlo simulation.The role played by the dibaryonic resonances in
relativistic nuclear collisions could be a significant one.
Key words: Relativistic nuclear interactions negative pions, negative kaons,
di-pions , streamer chamber, dibaryons, MIT - bag model
PACS codes: 25.75.+r,14.40.Aq,14.20.Pt,12.40.AsComment: 17 pages,LATEX, preprint ICTP -243 1993,figures available by reques
A Mediterranean-type diet is associated with better metabolic profile in urban Polish adults: Results from the HAPIEE study
The aim of this study was to evaluate the relationship between adherence to a Mediterranean-type diet and metabolic syndrome (MetS) in the Polish arm of the Health, Alcohol and Psychosocial factors In Eastern Europe (HAPIEE) cohort study
Transient field fluctuations effects in d+Au and Au+Au collisions at \sqrt{s_nn} = 200 GeV
The effect of fluctuations of SCF on the baryon production in d+Au and Au+Au
collisions at 200A GeV is studied in the framework of HIJING/BB v2.0 model. An
increase of the string tension from kappa_0= 1 GeV/fm, to in medium mean values
of 1.5 to 2.0 GeV/fm and 2.0 to 3.0 GeV/fm, for d+Au and Au+Au respectively,
results in a consistent description of the observed nuclear modification
factors R_dAu and R_AuAu(that relates (d)Au+Au and p+p colllisions) and point
to the relevance of fluctuations of transient color fields. The differences
between nuclear modification factors R_AuAu and R_CP (that relates central and
peripheral collisions) are also discussed.
The measurement of multi-strange (anti)hyperons (\Xi, \Omega) yields would
provide a crucial test of the importance of SCF fluctuations at RHIC energies.Comment: 13 pages,Latex (revtex4), 11 figures, 2 tables; abstract slightly
modified, text modification, revised version accepted for publication in
Phys. Rev.
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