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Brightness sensation and judgment of turning on ceiling lumin lumin aires in daylit space

Journal of Environmental engineering 2009年第639期74卷 539-544页

作者： Masuo, Wataru Komine, Hiromi Mochizuki, Etsuko Doctoral Program in Engineering Graduate School of Engineering Chiba Institute of Technology Japan Dept. of Architecture and Civil Engineering Chiba Institute of Technology Japan

Subjective experiment was conducted to identify the relationship between brightness sensation and the percentage of the subjectswho turned on the ceiling luminaire in an experimental room which introduced diffused direct sunlight by using reflecting panelbeside the window. Brightness sensation judged by the subjects just after they entered the room with diffused direct sunlight became higher than that without diffused direct sunlight. However diffused direct sunlight introduced into the room had no significant effects on the subjects' brightness sensation judged after they stayed in the room for 5 minutes. It was also identified that in the case when the illuminance on the desk was higher than about 200-400 lx, half of the subjects turned off the ceiling luminaire.

关键词： Luminance

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Optimal dividend distribution policy from the perspective of the impatient and loss-averse investor

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Journal of Socio-Economics 2009年第3期38卷 534-540页

作者： Yang, Yang Shoji, Isao Kanehiro, Sumei Doctoral Program in Systems and Information Engineering University of Tsukuba Tsukuba Ibaraki 305-8573 Japan Graduate School of Systems and Information Engineering University of Tsukuba Tsukuba Ibaraki 305-8573 1-1-1 Tennoudai Japan Keihatsusha Inc. Tokyo 135-0042 Kiba Koutou Japan

This paper discusses a problem concerning intertemporal decision-making under uncertainty when its subject has psychological biases. Here, we consider an investment company as a decision maker that invests money from investors in a financial asset and pays some dividend every period depending on the performance of the investment. On the other hand, we assume investors have such psychological biases as inconsistent time preference and loss aversion. Through numerical experiments we show that the optimal dividend distribution under inconsistent time preference and loss aversion is quite different from the distribution without these psychological factors, and that combinations of the two factors produce various patterns of dividend distribution. © 2009 Elsevier Inc. All rights reserved.

关键词： Intertemporal choice Loss aversion Quasi-hyperbolic discounting Reference-dependent preference Time inconsistent preference

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An authenticated anonymous group key management with only one rekey message

An authenticated anonymous group key management with only on...

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5th IASTED European Conference on Internet and Multimedia Systems and Applications, EuroIMSA 2009

作者： Wuu, Lih-Chyau Hung, Chi-Hsiang Department of Computer Science and Information Engineering National Yunlin University of Science and Technology 123 University Road Touliu Yunlin Taiwan Graduate School of Engineering Science and Technology Doctoral Program National Yunlin University of Science and Technology 123 University Road Touliu Yunlin Taiwan

ISBN: (纸本)9780889868021

In Internet, IP multicast has been used successfully to provide an efficient, best-effort delivery service for group communication applications. However, applications such as multiparty private conference, distribution of stock market information, pay per view and other subscriber services require secure multicast to protect integrity and confidentiality of the group traffic, and validate group member's authenticity. Providing secure multicast for group communication is problematic without a robust group key management. In this paper, we propose an anonymous group key management with ID-based Signature and secret sharing technologies to distribute a new group key securely to each participant of a group with only one rekey message whenever the group membership changes. The key management guarantees that a legal user, without revealing his/her real identity, can join a group after finishing the mutual authentication with the group initiator, and enforces the forward secrecy and backward secrecy.

关键词： Multicasting

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Inert effects on the flammability characteristics of methanol by nitrogen or carbon dioxide

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Journal of Thermal Analysis and Calorimetry 2009年第3期96卷 759-763页

作者： Chiang, C.-C. Lee, J.-C. Chang, Y.-M. Chuang, C.-F. Shu, C.-M. 1 Jin-De Rd. Changhua Changhua 50074 Taiwan Department of Electrical Engineering Hsiuping Institute of Technology 11 Gong-Ye Rd. Dali Taichung 41280 Taiwan Doctoral Program Graduate School of Engineering Science and Technology National Yunlin University of Science and Technology 123 University Rd. Sec. 3 Douliou Yunlin 64002 Taiwan Bao-Shan Campus 1 Jin-De Rd. Changhua Changhua 50074 Taiwan

Knowledge of material safety properties is critical for safe handing in the chemical process industries, especially for flammable chemicals that might result in serious fires and explosions. This study investigated the flammability characteristics of methanol under working conditions during the process. The targeted fire and explosion properties, like explosion limits (UEL and LEL), vapor deflagration index (K g), maximum explosion pressure (P max), and maximum explosion pressure rise [(dP dt -1) max], were deliberately obtained via a 20-L-Apparatus in 101 kPa (i.e., 760 mmHg/1 atm), 150 and 200 °C, along with various experimental arrangements containing nitrogen (N2) or carbon dioxide (CO 2) as inert component. Particularly, this study discussed and elucidated the inert influence on the above safety-related parameters by two different inerting gases of N2 and CO2. The results indicated that adding an inert component to fuel-inert gas mixtures determined the decrease of explosion range and flammability hazard degree. The results also demonstrated that CO2 possessed higher inerting capability than N2 in this study. © 2009 Akadémiai Kiadó, Budapest, Hungary.

关键词： Carbon dioxide

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Thermal runaway evaluation of α-methylstyrene and trans-β-methylstyrene with benzaldehyde

Thermal runaway evaluation of α-methylstyrene and trans-β-...

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作者： Lin, S.-Y. Tseng, J.-M. Lee, M.-K. Wu, T.-C. Shu, C.-M. Doctoral Program Graduate School of Engineering Science and Technology National Yunlin University of Science and Technology 123 University Rd. Douliou Yunlin 64002 Taiwan Department of Occupational Safety and Health Chia-Nan University of Pharmacy and Science 60 Er-Jen Rd. Jen-Te Tainan 71710 Taiwan Department of Safety Health and Environmental Engineering HungKuang University 34 Chung-Chie Rd. ShaLu Taichung 43302 Taiwan

Styrene is an important chemical in the petrochemical industry. In recent years, there have been sporadic releases, runaway reactions, fires, and thermal explosion accidents incurred by styrene and its derivatives worldwide. The purpose of this study was to estimate the impact of styrene and its derivatives of α-methylstyrene (AMS) and trans-β-methylstyrene (TBMS) contacting with benzaldehyde. Experiments were carried out to evaluate the thermokinetic parameters estimated by differential scanning calorimetry (DSC) and thermal activity monitor III (TAM III). TAM III was used to determine the fundamental thermokinetics under various isothermal temperatures, 80, 90 and 100C. This autocatalytic reaction was demonstrated in thermal curves. After styrene was contacted with benzaldehyde, the exothermic onset temperature (T 0) and the total heat of reaction (Q total) were altered by DSC tests. When benzaldehyde is mixed with AMS and TBMS, the reaction time will be shorter but the enthalpy reduced, as revealed by TAM III tests. As AMS and TBMS, respectively, were contacted with benzaldehyde, both exothermic phenomena were changed during the reaction excursion. According to the results of this research, an operator should dictate the oxygen concentration in order to avoid any potential hazards during handling and transportation. © 2009 Akadémiai Kiadó, Budapest.

关键词： Differential scanning calorimetry

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Nonlinear internal wave run-up on impermeable steep slopes

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Journal of Offshore Mechanics and Arctic engineering 2009年第4期131卷 1-5页

作者： Tseng, I-Fan Chen, Chen-Yuan Kuo, Hui-Ming Department of Marine Environment and Engineering National Sun Yat-Sen University Kaohsiung 80424 Taiwan Department of Computer Science National Pingtung University of Education No. 4-18 Ming Shen Rd. Pingtung 90003 Taiwan Department of Management Information System Yung-Ta Institute of Technology and Commerce Lin-Luoh Pingtung 90941 Taiwan Doctoral Program in Management National Kaohsiung First University of Science and Technology Kaohsiung Taiwan Department of Logistics Management Shu-Te University Yen Chau Kaohsiung 82445 Taiwan

Laboratory experiments were conducted to investigate the run-up of internal solitary waves (ISWs) on steep uniform slopes in a two-layered fluid system with a free surface. A 12 m long wave flume, which incorporated a movable vertical gate for generating ISWs, was used in the experiments. A steep uniform slope was modeled at one end of the flume. In the present study we looked at internal waves with small and large amplitudes using a steep uniform slope (from one of Θ=30, 50, 60, 90, 120, and 130 deg) much longer than those previously published in the literature. Results collected from a wide range of experimental runs show that the run-up height depends on the planar slope, while the breaking depth is only antecedent to the amplitude of an ISW. The overall quantitative agreement with the linear feature aspects of the incident wave amplitude is encouraging. Copyright © 2009 by ASME.

关键词： Arctic engineering

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Hierarchical kinetic simulation for autocatalytic decomposition of cumene hydroperoxide at low temperatures

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Journal of Thermal Analysis and Calorimetry 2009年第3期96卷 751-758页

作者： Chen, Jiann-Rong Cheng, Shyh-Yuch Yuan, Min-Hao Kossoy, Arcady A. Shu, Chi-Min General Education Hsiuping Institute of Technology 11 Gong-Ye Road Dali Taichung County 41280 Taiwan Doctoral Program Graduate School of Engineering Science and Technology National Yunlin University of Science and Technology 123 University Road Sec. 3 Douliou Yunlin 64002 Taiwan Department of Occupational Safety and Hygiene Chia-Nan University of Pharmacy and Science 60 Erh-Jen Road Sec.1 Jente Tainan 71710 Taiwan Graduate Institute of Environmental Engineering National Taiwan University 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Ltd 14 Dobrolubov Ave St. Petersburg 197198 Russia

A hierarchical set of kinetic models were proposed and discussed for simulation of autocatalytic decomposition of cumene hydroperoxide (CHP) in cumene at low temperatures. The hierarchy leads from a formal model of full autocatalysis, which is based on conversion degree as a state variable, through a two-stage autocatalytic concentration-based model to a meticulous multi-stage model of the reaction. By the ForK (Formal Kinetics) and DesK (Descriptive Kinetics) software, developed by ChemInform Saint Petersburg (CISP) Ltd., the related kinetic parameters and their significance have also been estimated and elucidated. Through this best-fit approach, it is possible to formulate a systematic methodology on the kinetic studies for thermal decomposition of typical organic peroxides with autocatalytic nature, specifically at low temperature ranges. © 2009 Akadémiai Kiadó, Budapest, Hungary.

关键词： Kinetic parameters

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Thermal characteristics and regeneration analyses of adsorbents by differential scanning calorimetry and scanning electron microscope

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Journal of Thermal Analysis and Calorimetry 2009年第3期96卷 765-769页

作者： Su, Chung-Hwei Wu, Sheng-Hung Shen, Sun-Ju Shiue, Gong-Yih Wang, Yih-Weng Shu, Chi-Min Department of Fire Science WuFeng Institute of Technology 117 Chian-Kuo Rd. Sec. 2 Min-Hsiung Chia-Yi 62153 Taiwan Doctoral Program Graduate School of Engineering Science and Technology National Yunlin University of Science and Technology 123 University Rd. Sec. 3 Douliou Yunlin 64002 Taiwan Department of Occupational Safety and Health ChiaNan University of Pharmacy and Science 60 Erh-Jen Rd. Sec. 1 Tainan 71710 Taiwan Department of Chemical Engineering and Biotechnology Hsiuping of Technology 11 Gongye Rd. Dali Taichung 41280 Taiwan Department of Occupational Safety and Health Jen-Teh Junior College of Medicine Nursing and Management 1 Jen-Teh Rd. Houlong Miaoli 35601 Taiwan

Volatile organic compounds (VOCs) are the main factors involved in pollution control and global warming in industrialized nations. Various treatment methods involving incineration, adsorption, etc., were employed to reduce VOCs concentration. Various absorbents, such as activated carbon, zeolite, silica gel or alumina, and so on were broadly used to adsorb VOCs in various industrial applications. Differential scanning calorimetry (DSC) was handled to analyze the thermal characteristics of absorbents. Typically, a scanning electron microscope (SEM) has been used to evaluate the structure variation of absorbents under high temperature situations. In view of pollution control and loss prevention, versatility and analysis of recycled adsorbents are necessary and useful for various industrial applications. © 2009 Akadémiai Kiadó, Budapest, Hungary.

关键词： Zeolites

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Multiscale modeling in rodent ventricular myocytes

Multiscale modeling in rodent ventricular myocytes

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作者： Lu, Shaoying Michailova, Anushka Saucerman, Jeffrey Cheng, Yuhui Yu, Zeyun Kaiser, Timothy Li, Wilfred Bank, Randolph Holst, Michael McCammon, J. Hayashi, Takeharu Hoshijima, Masahiko Arzberger, Peter McCulloch, Andrew Bioengineering Department University of Illinois United States Bioengineering Department UCSD United States Department of Biomedical Engineering University of Virginia United States Department of Mathematics UCSD United States UCSD United States College of Computer Science and Technology Jilin University China Department of Mathematics Center for Computational Mathematics and the Computational Science Mathematics and Engineering Doctoral Program at UCSD Department of Pharmacology UCSD United States Center for Research in Biological Systems UCSD United States Department of Bioengineering UCSD United States Department of Bioengineering PFBH 241 University of California San Diego 9500 Gilman Drive San Diego CA 92093-0412 United States

There is a growing body of experimental evidence suggesting that the Ca2+ signaling in ventricular myocytes is characterized by a high gradient near the cell membrane and a more uniform Ca2+ distribution in the cell interior [1]--[7]. An important reason for this phenomenon might be that in these cells the t-tubular system forms a network of extracellular space, extending deep into the cell interior. This allows the electrical signal, that propagates rapidly along the cell membrane, to reach the vicinity of the sarcoplasmic reticulum (SR), where intracellular Ca2+ required for myofilament activation is stored [1], [8]--[11]. Early studies of cardiac muscle showed that the t-tubules are found at intervals of about 2 lm along the longitudinal cell axis in close proximity to the Z-disks of the sarcomeres [12]. Subsequent studies have demonstrated that the t-tubular system has also longitudinal extensions [9]--[11], [13].

关键词： Cells

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Sensing the world:: Challenges on WSNs

Sensing the world:: Challenges on WSNs

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IEEE International Conference on Automation, Quality and Testing, Robotics (AQTR 2008)

作者： Rocha, Valter Goncalves, Gil Agilus I+D PRODEI - Doctoral Program in Informatics Engineering Faculty of Engineering of the University of Porto Informatics Engineering Department Faculty of Engineering of the University of Porto

ISBN: (纸本)9781424425761

Wireless sensor network (WSNs) is a demanding multidisciplinary field that has been target of research in the last decade. The increasing demand for security and automated monitoring of things and places makes WSNs a promising technology although there are still many open research contributions needed to make this the standard of environmental sensing. The goal of this article is to identify the research challenges on WSNs by dividing them into functional groups, building on previous work. We followed a structured approach based on a simplified yet complete vision of a design space for WSNs. Moreover, this work aims to identify research gaps and investigation fields yet unexplored or hardly explored by researchers in order to plot paths for future research. Several challenges and research areas were identified, like Models for Sensor Networks, Benchmarking Methodologies, Distributed Processing, Interface WSNs and Network Reprogramming. Some of these challenges will become even clearer as increasingly WSNs become Wireless Sensor and Actuator Networks (WSANs).

关键词： wireless sensor networks, WSN pervasive computing mesh networking

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