نتایج جستجو برای: random usage

تعداد نتایج: 377689  

Journal: :Adicciones 2014
Roberto Secades-Villa Amador Calafat José Ramón Fernández-Hermida Montse Juan Mariangels Duch Eva Skärstrand Elisardo Becoña Sanela Talic

Despite the significant contributions from previous studies about the prevalence of problematic Internet use (PIU) among adolescents in Europe, important questions remain regarding adverse consequences of PIU. This study aims to assess the relation between duration of Internet use and adverse psychosocial effects among adolescents from six European countries. The final sample included 7,351 ado...

Journal: :Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors 2008
Jerry L Grenard Susan L Ames Reinout W Wiers Carolien Thush Steve Sussman Alan W Stacy

Some theories suggest that spontaneously activated, drug-related associations in memory may have a "freer reign" in predicting drug use among individuals with lower working memory capacity. This study evaluated this hypothesis among 145 at-risk youth attending continuation high schools (CHS). This is the 1st study to evaluate this type of dual-process interaction in the prediction of drug use a...

2013
Paul D. Clough Arantxa Otegi Eneko Agirre Mark M. Hall

In this paper we describe the design and implementation of nonpersonalized recommendations in the PATHS system. This system allows users to explore items from Europeana in new ways. Recommendations of the type “people who viewed this item also viewed this item” are powered by pairs of viewed items mined from Europeana. However, due to limited usage data only 10.3% of items in the PATHS dataset ...

Journal: :Bioinformatics 1998
James O. McInerney

UNLABELLED The program General Codon Usage Analysis (GCUA) has been developed for analysing codon and amino acid usage patterns. AVAILABILITY ftp://ftp.nhm.ac.uk/pub/gcua. Freely available for academic use, commercial users should contact the author. CONTACT [email protected]

Journal: :international journal of occupational hygiene 0
isaac rahimian-boogar department of clinical psychology, faculty of psychology & educational seinces, semnan university, semnan, iran. mehdi ghodrati-mirkouhi department of psychology, payam-noor university , ghazvin center, ghazvin, iran.

evaluation an etiological model with psychosocial and occupational risk factors has applied implication for therapeutic intervention. this research was aimed to investigate psychosocial and occupational risk factors of musculoskeletal pains among computer users in semnan province of iran . in this cross-sectional study, 324 computer users from governmental offices and private industrial/organiz...

2001
Charles Steinfield Marleen Huysman Kenneth David Chyng-Yang Jang Jan Poot Mirjam Huis in 't Veld Ingrid Mulder Erik D. Goodman John Lloyd Timothy Hinds J. H. Erik Andriessen Kirsten Jarvis Klaas van der Werff Angel Cabrera

Virtual teams are increasingly global, creating challenges for communication and coordination due to greater distances, multiple time zones, and cultural differences. A longitudinal research program investigating communication and collaboration in globally distributed engineering design teams is described. Preliminary results illustrate the value of combining quantitative and qualitative source...

2017
Benjamin A. Bouvier Beth Elston Scott E. Hadland Traci C. Green Brandon D. L. Marshall

BACKGROUND Supervised injection facilities (SIFs) are legally sanctioned environments for people to inject drugs under medical supervision. SIFs currently operate in ten countries, but to date, no SIF has been opened in the USA. In light of increasing overdose mortality in the USA, this study evaluated willingness to use a SIF among youth who report non-medical prescription opioid (NMPO) use. ...

Journal: :Central European journal of public health 2016
Roman Gabrhelík Blanka Nechanská Viktor Mravčík Svetlana Skurtveit Ingunn Olea Lund Marte Handal

Licit and illicit drug use in pregnant women constitutes a long lasting and serious problem worldwide. Information on long-term effects of maternal drug use on the child is limited. Nationwide registers provide a great potential to study short and long-term consequences for children exposed to licit and illicit drugs during pregnancy. We discuss this potential, with a special emphasis on exposu...

2010
Chongsheng Zhang Florent Masseglia

How to select interesting feature sets from data streams is a new and important research topic in which there are three major challenges. First of all, instead of discovering features individually and independently, we are interested in comprehensively selecting a subset of features whose joint importance or weight is the highest. Secondly, we are concerned with the problem of selecting feature...

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