• Title/Summary/Keyword: physical environments

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Corrosion in Batteries

  • Muniyandi, N.
    • Corrosion Science and Technology
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    • v.2 no.1
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    • pp.1-6
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    • 2003
  • A comprehensive coverage of corrosion in batteries is rendered difficult by the wide choice of materials, environments and physical features as obtained in practical settings. Understanding of the complex processes that occur in these electrochemical systems gets clearer as new theoretical approaches backed by sophisticated analytical and characterization techniques continue to provide valuable insights which aid in controlling/mitigating wasteful corrosion reactions which affect battery shelf-life, cycle life, rate capability and capacity. In the light of the above, I limit myself to a discussion on corrosion aspects in representative system such as conventional Leclanche, lead-acid battery and magnesium batteries, and advanced lithium systems.

Service Quality, Value and Satisfaction in University Job Fair

  • Kim, Jung-Yoon;Kim, Keum-Lim
    • International Journal of Contents
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    • v.6 no.3
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    • pp.47-52
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    • 2010
  • This paper examines the casual relations among service quality, perceived value and satisfaction from the perspective of Job Fair attendees. Numerous studies have been conducted in the field of perceived value and satisfaction. This work would be the mere contribution in the literature development but surely contribute to the better development of service providing sector to create better quality, value and satisfaction. A framework suggested that personal service, touristic attractiveness and physical environments were turned out to affect positively on the perceived value and satisfaction. The service providers should concentrate on developing the issues.

Microbial Metal Transformations

  • Gadd, Geoffrey M.
    • Journal of Microbiology
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    • v.39 no.2
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    • pp.83-88
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    • 2001
  • There is considerable interest in how microbiological processes can affect the behaviour of metal contaminants in natural and engineered environments and their potential for bioremediation. The extent to which microorganisms can affect metal contaminants is dependent on the identity and chemical form of the metal and the physical and chemical nature of the contaminated site or substance. In general terms, microbial processes which solubilize metals increase their bioavailability and potential toxicity, whereas those that immobilize them reduce bioavailability. The balance between mobilization and immobilization varies depending on the metal, the organisms, their environment and physico-chemical conditions.

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Application of TRIZ(Theory of Inventive Problem Solving) to Creative Knowledge Management (트리즈 (러시아의 창의적 문제해결 이론)의 창의적 지식경영에서의 응용)

  • Lee, Kyeong-Won;Lee, Yong-Kyu
    • Knowledge Management Research
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    • v.4 no.1
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    • pp.81-94
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    • 2003
  • The Russian theory of inventive problem solving method in Engineering, TRIZ is introduced to the non Engineering field these days. In this paper, the applications of TRIZ to creative knowledge management for knowledge creation are reviewed. This paper shows some examples on the systematic win-win problem solving in business environments using TRIZ methodology and comments the possibility of TRIZ in conceptual creative business innovation in future.

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Regeneration Design for the Under-space of Overpass in the City (도시 고가도로 하부 공간 재생디자인 연구)

  • Nam, Dong-Hyun;Yoon, Ji-Young
    • KIEAE Journal
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    • v.11 no.5
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    • pp.31-42
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    • 2011
  • This study aimed at exploring the cultural ways to develope the under-space of overpass in the downtown area which has been considered as a dead, unhealthy place. The study process consists of 4 methodological stages. literature review, case study on environmental design of under-space of overpass, questionnaire and statistical analysis and specific study on regional context were conducted to understand the problems of the space and the needs of the community and visitors. The final suggestion based on the research are the natural rest settings including pocket parks with trees and fountain as well as cultural settings with small sized outdoor gallery and open performance stage which can be managed by the community members. The findings of this study would help the dead space in the center of the city regenerate the community in terms of physical, cultural and social environments. Also, this study will show the importance and the methodological approach of the research for the development of the hidden potential space of the city.

STARDUSTS IN SUPERNOVA REMNANTS SEEN BY AKARI

  • Koo, Bon-Chul
    • Publications of The Korean Astronomical Society
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    • v.27 no.4
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    • pp.225-230
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    • 2012
  • Supernovae (SN) and supernova remnants (SNRs) play a major role in the life-cycle of interstellar dusts. Fast shock waves generated by SN explosions sweep out the interstellar space destroying dust grains and modifying their physical and chemical properties. The dense, cooling SN ejecta, on the other hand, provide an environment for dusts to condense. Recent space-infrared telescopes have revealed the hidden universe related to these fascinating microscopic processes. In this paper, I introduce the results on stardusts in young core-collapse supernova remnants obtained by AKARI. The AKARI results show diverse infrared characteristics of stardusts associated with SNRs, implying diverse physical/chemical stellar structures and circumstellar environments at the time of explosion.

System of Systems Approach to Formal Modeling of CPS for Simulation-Based Analysis

  • Lee, Kyou Ho;Hong, Jeong Hee;Kim, Tag Gon
    • ETRI Journal
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    • v.37 no.1
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    • pp.175-185
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    • 2015
  • This paper presents a system-of-systems (SoS) approach to the formal modeling of a cyber-physical system (CPS) for simulation-based analysis. The approach is based on a convergence technology for modeling and simulation of a highly complex system in which SoS modeling methodology, hybrid systems modeling theory, and simulation interoperation technology are merged. The methodology maps each constituent system of a CPS to a disparate model of either continuous or discrete types. The theory employs two formalisms for modeling of the two model types with formal specification of interfaces between them. Finally, the technology adapts a simulation bus called DEVS BUS whose protocol synchronizes time and exchange messages between subsystems simulation. Benefits of the approach include reusability of simulation models and environments, and simulation-based analysis of subsystems of a CPS in an inter-relational manner.

A Study on the Ubiquitous Interface Technologies (유비쿼터스 인터페이스 기술에 대한 고찰)

  • Lee, Hyeon-Jae;Oh, Chang-Heon
    • Journal of Digital Convergence
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    • v.4 no.1
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    • pp.31-41
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    • 2006
  • This article introduces developing trends of an 'Ubiquitous Interface' as an access method for use of various network resources, such as public wireless networks and un-licensed wireless networks in ubiquitous sensor network environments, without troublesome settings or operations by users. 'Ubiquitous Interface' is a relatively wide sense meaning not only physical interface of specified device or between processors, but anything method for access USN. These 'Ubiquitous Interface' able to provide seamless services that adapt autonomously to the user's movements and changes in the state of wireless resources. Recently, strongly recommended current technologies are RFID, NFC, Multi-mode mobile terminal, UMA mobile terminal and Wearable computer as a future ubiquitous interface. These technologies are have to have flexibility and multiple physical communication channels for seamless service hand over and serve easy connection at huge USN to user. Also, they have to must have flexible software structure. Finally, through the 'Ubiquitous Interface', we will be experience of seamless communication and realize a real liberty of communication.

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Intelligent Space and Ontological Network System

  • Yamaguchi, Toru;Sato, Eri;Murakami, Hiroki
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 2003.09a
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    • pp.126-129
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    • 2003
  • The robot has recently emerged as a factor in the daily lives of humans, taking the form of a mechanical pet or similar source of entertainment. A robot system that is designed to co-exist with humans, i.e., a coexistence-type robot system, is important to be "it exists in various environments with the person, and robot system by which the interaction of n physical, informational emotion with the person etc. was valued". When studying the impact of intimacy in the human/robot relationship, we have to examine the problems that can arise as a result of physical intimacy(coordination on safety in the hardware side and a soft side). Furthermore, We should also consider the informational aspects of intimacy (recognition technology, and information transport and sharing).

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Implementation of Henhouse Monitoring System Based on Ubiquitous Sensor Network (USN 기반의 계사 모니터링 시스템 구축)

  • Park, DongGook;Yoe, Hyun;Rhyu, KyeongTaek;Shin, ChangSun
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.5 no.3
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    • pp.9-18
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    • 2009
  • This paper proposes a Ubiquitous Henhouse Monitoring System (UHMS) that can not only monitor henhouse's conditions and raising environments, but also control the henhouse remotely by using sensor network technology. The system consists of three layers. The physical layer connects sensors with facilities. The middleware layer processes and manages data collected from the physical layer. And the application layer provides the user with the user requested services. The system provides a real-time monitoring service, a facility controlling service, an expert service, a consumer safety service, and a mobile message service via interacting with components of each layer. Finally, a henhouse model is defined and the relevant system components and the application GUIs are implemented.