1,721,156 research outputs found
sj-docx-1-psp-10.1177_01461672221094976 – Supplemental material for Don’t Go Chasing Narcissists
No full textSupplemental material, sj-docx-1-psp-10.1177_01461672221094976 for Don’t Go Chasing Narcissists by Dritjon Gruda, Dimitra Karanatsiou, Paul Hanges, Jennifer Golbeck and Athena Vakali in Personality and Social Psychology Bulletin</p
New Trends in Databases and Information Systems: Contributions from ADBIS 2013
No full textResearch on database and information system technologies has been rapidly evolving over the last few years. Advances concern either new data types, new management issues, and new kind of architectures and systems. The 17th East-European Conference on Advances in Databases and Information Systems (ADBIS 2013), held on September 1–4, 2013 in Genova, Italy, and associated satellite events aimed at covering some emerging issues concerning such new trends in database and information system research. The aim of this paper is to present such events, their motivations and topics of interest, as well as briefly outline the papers selected for presentations. The selected papers will then be included in the remainder of this volume
Video Datastorag Policies: An Access Frequency Based Approach
No full textVideo applications are characterized by their increased requirements for hug storag spaces andtiming synchronization. Video data storag is a critical issue due to the so-called I/O bottleneck problem in relation to the quality of service while accessing video applications. The main contribution of the paper is that it considers video data dependencies, access frequencies andtiming constraints in order to introduce a video data representation model whichg ides the storag policies. Two video data representation levels are considered to capture the frequencies of accesses at external (video objects) and internal (video clips) levels. A simulation model has been developed in order to evaluate the placement strateg2C-- Video data placement is performed on a tertiary storag subsystem by both constructive and iterative improvement policies. Iterative improvement placement has been proven to outperform the other video data placement approaches
Evolutionary Techniques for Web Caching
No full textWeb caching has been proposed as an effective solution to the problems of network traffic and congestion, Web objects access and Web load balancing. This paper presents a model for optimizing Web cache content by applying either a genetic algorithm or an evolutionary programming scheme for Web cache content replacement. Three policies are proposed for each of the genetic algorithm and the evolutionary programming techniques, in relation to objects staleness factors and retrieval rates. A simulation model is developed and long term trace-driven simulation is used to experiment on the proposed techniques. The results indicate that all evolutionary techniques are beneficial to the cache replacement, compared to the conventional replacement applied in most Web cache server. Under an appropriate objective function the genetic algorithm has been proven to be the best of all approaches with respect to cache hit and byte hit ratios
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