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ACM SIGKDD Workshop on Mining Data Semantics 2012, MDS'12 - SIGKDD 2012

作者： Shuai, Xin Ding, Ying Busemeyer, Jerome Chen, Shanshan Sun, Yuyin Tang, Jie School of Informatics and Computing Indiana University Bloomington IN United States School of Library and Information Science Indiana University Bloomington IN United States Dept. of Psychological and Brain Science Indiana University Bloomington IN United States Dept. of Computer Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9781450315463

Social inuence in social networks has been extensively re-searched. Most studies have focused on direct inuence, while another interesting question can be raised as whether indirect inuence exists between two users who're not directly connected in the network and what affects such inuence. In addition, the theory of complex contagion tells us that more spreaders will enhance the indirect inuence between two users. Our observation of intensity of indirect inu- ence, propagated by n parallel spreaders and quantified by retweeting probability in two Twitter social networks, shows that complex contagion is validated globally but is violated locally. In other words, the retweeting probability increases non-monotonically with some local drops. A quantum cognition based probabilistic model is proposed to account for these local drops. Copyright © 2012 ACM.

关键词： Spreaders

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Coping strategies to manage acculturative stress: Meaningful activity participation, social support, and positive emotion among Korean immigrant adolescents in the USA

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International Journal of Qualitative Studies on Health and Well-being 2012年 7卷 1-10页

作者： Kim, Junhyoung Suh, Wonseok Kim, Sooyeon Gopalan, Himanshu Department of Human Performance and Sport Sciences Winston-Salem State University Winston-Salem NC United States Department of Creative Informatics and Computing Institute Korea University Seoul South Korea School of Tourism and Food Service Yeungnam College of Science and Technology Dae-Gu South Korea

During acculturation, Asian immigrant adolescents have numerous challenges such as language barriers, cultural and ethnic differences, different school environments, discrimination experiences, and intergroup conflicts and tension. These challenges generate acculturative stress, which negatively affects the perception of health and well-being among Asian immigrant adolescents. This article explored how Asian immigrant adolescents perceive and cope with acculturative stress. In particular, this study examined the stress-coping strategies in the adaptation process as experienced by Korean immigrant adolescents. Three main themes associated with the stress-coping strategies were captured: (a) engagement in meaningful activities;(b) social support;and (c) positive emotion. This finding implies that Asian immigrant adolescents create and develop their own strategies to deal with acculturative stress, which results in a sense of happiness and psychological wellbeing. This study discuss the future implications on how to improve the perception of health and well-being among Asian immigrant adolescents. Copyright © 2012 N. Dauman & S. I. Erlandsson.

关键词： Acculturative stress Adaptation Coping strategy Korean immigrant adolescents Meaningful activity

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Biomimetic sensing by the photoreceptor membrane protein bacteriorhodopsin

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Journal of the National Institute of Information and Communications technology 2013年第1期60卷 75-83页

作者： Kasai, Katsuyuki Haruyama, Yoshihiro Yamada, Toshiki Akiba, Makoto Tominari, Yukihiro Kaji, Takahiro Terui, Toshifumi Peper, Ferdinand Katagiri, Yoshitada Tanaka, Shukichi Kikuchi, Hiroshi Okada-Shudo, Yoshiko Otomo, Akira Nano ICT Laboratory Department of Quantum Optics Nonlinear Optics Laser Control Advanced ICT Research Institute Japan Nano ICT Laboratory Department of Bio-Materials Advanced ICT Research Institute Japan Nano ICT Laboratory Department of Organic Materials Material Physics Optical Measurement Nano Materials Advanced ICT Research Institute Japan Planning Office Department of Photodetection Technology Semiconductor Device Low-Noise Technology Advanced ICT Research Institute Japan Nano ICT Laboratory Department of Superconductor Organic Electronics Terahertz Advanced ICT Research Institute Japan Nano ICT Laboratory Department of Laser Photochemistry Single-Molecule Spectroscopy Nanophotonics Advanced ICT Research Institute Japan Strategic Planning Office Strategic Planning Department Japan Brain Networks and Communication Laboratory Department of Nanocomputer Architectures Cellular Automata Neural Networks Natural Computing Center for Information and Neural Networks Japan Brain Networks and Communication Laboratory Department of Health Science and Informatics Human Informatics Center for Information and Neural Networks Japan Nano ICT Laboratory Terahertz Technology Research Center Advanced ICT Research Institute Japan Japan Graduate School of Informatics and Engineering Dept. of Engneering Science Japan Nano ICT Laboratory Depatment of Nanophotonics Nonlinear Optics Advanced ICT Research Institute Japan

Bacteriorhodopsin (bR) is a light-sensitive protein which has a proton-pump function, and is found in the cell membrane of Halobacterium salinarum inhabiting the salt lake. Optical excitation of bR at an electrode-electrolyte interface generates differential photocurrents while an incident light is turned on and off. This unique functional response is similar to that seen in retinal neurons. This paper describes the fabrication and evaluation of the dip-coated bR thin films, photocurrent characteristics, and biomimetic artificial retinas with the bR thin films.

关键词： Biomimetics

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Modelling of Prioritised Vertical Handoff Scheme in Integrated UMTS/WLANs

Modelling of Prioritised Vertical Handoff Scheme in Integrat...

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IEEE International Conference on Trust, Security and Privacy in computing and Communications (TrustCom)

作者： Z. Zabanoot G. Min Information Technology Department College of Applied Sciences Salalah Oman Department of Computing School of Informatics University of Bradford Bradford UK

ISBN: (纸本)9781467321723

The UMTS users have a relative low bandwidth requirement and arbitrary mobility feature, while the WLAN users have a high bandwidth requirement and limited mobility feature. Efficient sharing of resources between UMTS and WLANs can improve the capacity as well as quality of service (QoS) metrics. In this paper, prioritize vertical handoff scheme in integrated UMTS/WLAN network proposed. In this scheme the call residence times are modeled by general distribution to adapt the flexible mobility environments. The new originated and horizontal handoff call of UMTS users that are blocked in the UMTS-only coverage, can attempt a vertical handoff to the underlying WLANs. In the WLANs these call are given higher priority than the WLANs users call by reserving some channel for them plus they can share the rest of the channels with the WLANs users. The channel occupancy times and the blocking and dropping probabilities was derived and calculated. From analysis and numerical results, the performance of the UMTS network is improved with integration of WLANs, especially when the WLANs are in hot-spot areas.

关键词： Conferences Security Privacy

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European-Russian-central asian network of Master's degree informatics as a Second Competence

European-Russian-central asian network of Master's degree In...

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2012 IEEE Global Engineering Education Conference, EDUCON 2012

作者： Adam, Jean-Michel Luján-Mora, Sergio Merceron, Agathe Milosz, Marek Toppinen, Arto Pierre Mends France University Grenoble France Department of Software and Computing Systems University of Alicante Alicante Spain Media Informatics Department Beuth University of Applied Sciences Berlin Germany Institute of Computer Science Lublin University of Technology Lublin Poland School of Engineering and Technology Savonia University of Applied Sciences Savonia Finland

The aim of the ERAMIS project is to set up a network of Master's degree informatics as a Second Competence among 9 beneficiary universities of Kazakhstan, Kyrgyzstan and Russia, and 5 European universities. This c... 详细信息

关键词： Computer Science Double Diploma Introduction Faculty Development International Masters Network Master's degree Second Competence

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Mining topic-level opinion influence in microblog 12

Mining topic-level opinion influence in microblog

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21st ACM International Conference on Information and Knowledge Management, CIKM 2012

作者： Li, Daifeng Shuai, Xin Sun, Guozheng Tang, Jie Ding, Ying Luo, Zhipeng Dept. of Computer Science and Technology Tsinghua University Beijing China School of Informatics and Computing Indiana University Bloomington IN United States Dept. of Research Center Tencent Company Beijing China School of Library and Information Science Indiana University Bloomington IN United States Beijing University of Aeronautics and Astronautics Beijing China

ISBN: (纸本)9781450311564

This paper proposes a Topic-Level Opinion Influence Model (TOIM) that simultaneously incorporates topic factor, user opinions and social influence in a unified probabilistic model with two stages learning processes. In the first stage, topic factor and user influence are integrated to generate users' influential relationship based on different topics;in the second stage, users' historical messages and social interaction records are leveraged by TOIM to construct their historical opinions and neighbors' opinion influence through a statistical learning process, which can be further utilized to predict users' future opinions on some specific topics. We evaluate our TOIM on a large-scaled dataset from Tencent Weibo, one of the largest microbloggings website in China. The experimental results show that TOIM can better predict users' opinion than other baseline methods. © 2012 ACM.

关键词： Sentiment analysis

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Queueing analysis of internet-based call centers with interactive voice response and redial

Queueing analysis of internet-based call centers with intera...

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IEEE International Workshop on Computer-Aided Modeling, Analysis, and Design of Communication Links and Networks, CAMAD

作者： Kosuke Hashizume Tuan Phung-Duc Shoji Kasahara Yutaka Takahashi Graduate School of Informatics Kyoto University Kyoto Japan Department of Mathematical and Computing Sciences Tokyo Institute of Technology Okayama Tokyo Japan

Recently, call centers are important from a customer service point of view because they have a significant impact on customer satisfaction. In general, most of the management cost for call centers is labor cost for Customer Service Representatives (CSRs), and it is important for companies to manage CSRs in a cost-effective manner, keeping a high quality of customer service. Therefore, most of companies install Interactive Voice Response systems (IVRs) in order to not only reduce CSR management cost, but also to provide high-quality customer service. In this paper, focusing on call centers with IVRs, we investigate the impact of the service time at IVRs and number of IVRs on the utilization of a CSR. To this end, we model the call center with IVRs by a queueing system with retrials, analyzing the steady state probability by a continuous-time Markov chain. We derive performance measures such as the mean number of redialing customers, the blocking probability and the mean sojourn time. Numerical results show that under a low arrival rate of new calls, the utilization of a CSR is insensitive to the IVR service time as well as to the number of IVRs, and that the utilization grows proportionally with the increase in the probability that a customer in an IVR leaves for the CSR service.

关键词： Lead Orbits Extraterrestrial measurements

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An Artificial Immune System Based on Holland's Classifier as Network Intrusion Detection

An Artificial Immune System Based on Holland's Classifier as...

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International Conference on Machine Learning and Applications (ICMLA)

作者： Arisoa S. Randrianasolo Larry D. Pyeatt School of Computing and Informatics Lipscomb University Nashville TN USA Department of Mathematics and Computer Science South Dakota School of Mines and Technology Rapid City SD USA

In this paper, an Artificial Immune System based on Hollandâs Classifier is proposed as a new method for network intrusion detection. This paper is not aimed to provide a comparative study but to give more understanding on the feasibility of combining Artificial Immune System and Hollandâs Classifier to detect network intrusion. This new Artificial Immune System, named AIS-CS, can attain higher than 90% intrusion detection with a false negative percentage below 10% and a fairly low false positive rate on a network composed of 50 regular nodes and 50 intruders. The experiments appear to suggest that the best performance can be found by setting the tolerization and the simulation parameters differently. Since there are numerous parameters involved, more experiments need to be performed to further measure this Holland classifier based Artificial Immune System.

关键词： Detectors Immune system Intrusion detection Genetic algorithms USA Councils Computers Biological information theory

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Visual thinking & digital imagery

Visual thinking & digital imagery

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30th ACM Conference on Human Factors in computing Systems, CHI 2012

作者： Blevis, Eli Churchill, Elizabeth Odom, William Pierce, James Roedl, David Wakkary, Ron School of Informatics and Computing Indiana University Bloomington IN United States Internet Experiences Group Yahoo Research 4301 Great America Parkway Santa Clara CA 95054 United States HCI Institute Carnegie Mellon University Pittsburgh PA 15213 United States School of Interactive Arts and Technology Simon Fraser University Surrey BC Canada

ISBN: (纸本)9781450310161

This workshop focuses on exploring the centrality of visual literacy and visual thinking to HCI. Drawing on emerging critical perspectives, the workshop will address visual literacy and visual thinking from an interdisciplinary and transdisciplinary design-orientation [2, 8], foregrounding the notion that imagery is a primary form of visual thinking. Imagery - which subsumes digital imagery - goes well beyond sketching and beyond storyboards, screenshots and wireframes. We will address how a broader framework for visual thinking and imagery in HCI can play a role in raising the visual standards of HCI research and practice. Workshop participants will investigate possibilities for developing a culture of curatorial gaze in HCI, in order to (i) promote collection of digital images as a method appropriate for a design-oriented discipline, (ii) invite others to contribute to a genre of working and corpus of imagery unique to HCI, and (iii) to expand the approaches that design-oriented HCI may productively and creatively draw upon. © 2012 Authors.

关键词： Design

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Using Local Regression in Monte Carlo Tree Search

Using Local Regression in Monte Carlo Tree Search

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International Conference on Machine Learning and Applications (ICMLA)

In this non-comparative study paper, local regression modeling is added to Monte Carlo Tree Search (MCTS). This local regression modeling is used to replace the random action selection in the simulation part of MCTS. The modified MCTS method and the regular MCTS method were tested against each other on the tic-tac-toe and the connect four games. The results of the experiment indicated that local regression helped the modified MCTS to outperform the regular MCTS on moderately memory demanding games, such as connect four. The performances of the two approaches appear to equal each other on low branching factor and less memory demanding games similar to tic-tac-toe.

关键词： Games Monte Carlo methods Regression tree analysis Educational institutions Mathematical model Computational modeling Learning

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