• Title/Summary/Keyword: evaluation dimensions

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Ergonomic Evaluation of Biomechanical Hand Function

  • Lee, Kyung-Sun;Jung, Myung-Chul
    • Safety and Health at Work
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    • v.6 no.1
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    • pp.9-17
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    • 2015
  • The human hand is a complex structure that performs various functions for activities of daily living and occupations. This paper presents a literature review on the methodologies used to evaluate hand functions from a biomechanics standpoint, including anthropometry, kinematics, kinetics, and electromyography (EMG). Anthropometry describes the dimensions and measurements of the hand. Kinematics includes hand movements and the range of motion of finger joints. Kinetics includes hand models for tendon and joint force analysis. EMG is used on hand muscles associated with hand functions and with signal-processing technology.

Evaluation on the Electrical Properties of Outdoor Epoxy Resin Insulators under Accelerated Agings (가속열화에 따른 옥외용 epoxy 수지 애자의 전기적특성 평가)

  • Cho, H.G.;Kim, I.S.;Ahn, M.S.
    • Proceedings of the KIEE Conference
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    • 1994.07b
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    • pp.1360-1363
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    • 1994
  • Epoxy resin insulator have good electrical properties (high electric strength, high resistivity, low dielectric loss) in addition to high mechanical strength, small dimensions and design versatility. Polymer insulator, however, are subjected to aging processes, caused by the surrounding atmosphere, which may lead to degradation of their properties. This paper describes the results of a important study on the artificial pollution test, Weather-Ometer properties and rotating wheel dip test of high voltage different aging insulators which are the most important factors for outdoor uses. Also, the objects of this paper are to (a)result of insulator under dry(wet) flashover voltage, (b)artificial pollution test of salt spay, (c)Accelerated aging test of Weather-Ometer, (d) wet and dry flashover voltage under rotating wheel dip test.

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Effects of Community-based Rehabilitation Programs on Activities of Daily Living, Quality of Life and Assistive Technology Satisfaction for Disabled Adults in South Korea

  • Heo, Seo Yoon;Lee, Chang Hee;Choi, Wan Suk
    • Journal of International Academy of Physical Therapy Research
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    • v.8 no.1
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    • pp.1100-1104
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    • 2017
  • The purpose of this study was to examine the effects of community-based rehabilitation (CBR) program on activities of daily livings (ADLs), quality of life and assistive technology satisfaction for disabled adults in South Korea. Fourteen community-dwelling subjects were participated in a home-based rehabilitation program which performed once a month for 2 months. The outcome measures included Modified Barthel Index (MBI) for assessing ADLs, EuroQol five-dimensions questionnaire (EQ-5D) for quality of life (QoL) and Quebec User Evaluation of Satisfaction with assistive Technology 2.0 (QUEST 2.0) for assistive technology. Significant improvements in ADLs, quality of life and assistive technology satisfaction were observed after the program. This study indicated that community-based rehabilitation program is an effective method for improving ADLs, quality of life and assistive technology satisfaction for adults with disabilities.

An Efficient IP address Lookup Algorithm Using a Priority-Trie (IP 주소 검색을 위한 Priority Trie)

  • Lim, Hye-Sook;Mun, Ju-Hyoung
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.3-4
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    • 2006
  • Fast IP address lookup in routers is essential to achieve packet forwarding in wire-speed. The longest prefix matching for IP address lookup is more complex than exact matching because of its dual dimensions, length and value. By thoroughly studying the current proposals for IP address lookup, we find out that the binary search could be a low-cost solution while providing high performance. Most of the existing binary search algorithms based on trie have simple data structures which can be easily implemented, but they have some problems because of empty internal nodes. The proposed algorithm is based on trie structure, but empty internal nodes are replaced by priority prefixes. The best-matching-prefix search in the proposed algorithm is more efficiently performed since search can be finished earlier when input is matched with a priority prefix. The performance evaluation results show that the constructed priority-trie has very good performance in the lookup speed and the scalability.

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A High-Dimensional Index Structure Based on Singular Value Decomposition (Singular Value Decomposition 기반 고차원 인덱스 구조)

  • Kim, Sang-Wook;Aggarwal, Charu;Yu, Philip S.
    • Journal of Industrial Technology
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    • v.20 no.B
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    • pp.213-218
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    • 2000
  • The nearest neighbor query is an important operation widely used in multimedia databases for finding the object that is most similar to a given query object. Most of techniques for processing nearest neighbor queries employ multidimensional indexes for effective indexing of objects. However, the performance of previous multidimensional indexes, which use N-dimensional rectangles or spheres for representing the capsule of the object cluster, deteriorates seriously as the number of dimensions gets higher. This paper proposes a new index structure based singular value decomposition resolving this problem and the query processing method using it. We also verify the superiority of our approach through performance evaluation by performing extensive experiments.

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Development Process of Mobile Phone PUI Design Guidelines (휴대전화 PUI 디자인 가이드라인 도출 프로세스)

  • Lee, Kyung-Sun;You, Hee-Cheon;Kwon, O-Chae;Jung, Myung-Chul
    • Journal of the Ergonomics Society of Korea
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    • v.28 no.1
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    • pp.53-60
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    • 2009
  • The present study was intended to suggest a process of physical user interface (PUI) design guideline development, which was validated with mobile phones. The process consisted of five stages including component and dimension analysis, function and environment analysis, evaluation criterion generation, literature review, and design guideline development. The process was applied to develop 19 mobile phone PUI design guidelines by identifying 28 components, 9 dimensions, 51 functions, 7 environmental conditions, and 15 criteria. The systematic approach of the process would be useful for manufacturers to develop design guidelines in an efficient manner.

Red Image in the Modern Fashion (현대 패션에 나타난 레드 이미지)

  • Kim, Yoon-Kyoung;Lee, Kyoung-Hee
    • Fashion & Textile Research Journal
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    • v.3 no.3
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    • pp.204-210
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    • 2001
  • The purpose of the study is to clarify red image in the modem fashion. 40 kinds of costume samples being visual power in red have been selected from photographs in fashion magazines and divided into tones: pale (Vp, Lgr, L), bright (P, B), vivid (S, B, Dp), dark (Gr, Dl, Dgr, Dk). The study was measured by using Semantic Differential method. The subjects were 50 students majoring in clothing and textile. The data were analyzed by factor analysis, ANOVA, discrimminant analysis, MDS and regression analysis. The results of analysis are as follow; 1. Factor analysis has extracted 5 factors of red image in the fashion. These factor are Attractiveness, Hardness and Softness, Emotion, Attention, Simplicity. 2. There were significant difference in visual evaluation of red tones. 3. The discrimination among 4 red tones was related to attention and weight of red. 4. Evaluative dimensions of red was classified as Soft-Hard, Lively-Decent. 5. The image effect on Preference, Buying needs, Pleasant and Riches was consist of complicated sensibility.

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Strength Evaluation Formulae for Ring-Stiffened Tubular X-Joints (내부 환보강 X형 관이음부의 강도산정식)

  • 조현만;류연선
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2002.04a
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    • pp.61-68
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    • 2002
  • Tubular members have been applied in a wide range of frame structures including offshore structures. For the efficient load flow in tubular-member structures, the joints of tubular members are usually reinforced using internal ring stiffener for the steel tubular joint having a large diameter. The objective of this paper is to numerically assess the behavior of X-joints with an internal ring stiffener, and to evaluate the reinforcement effect of a ring stiffener, and to establish the strength formulae. Nonlinear finite element analysis is used to compute the static strength of axially loaded tubular joints. From the numerical results, internal ring stiffener is found to be efficient in improving static strength of tubular X-joints. Maximum strength ratios are calculated as 1.5~3.5, and the effective dimensions of ring stiffener are found. Regression analyses are performed considering practical size of ring stiffener and strength estimation formulae are proposed.

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Design and Fabrication of 2-T Rotating Halbach Magnet for Magnetic Refrigerator

  • Ryu, Kwon Sang;Nahm, Seung Hoon;Jung, Jae Kap;Baek, Seung-Wook
    • Journal of Magnetics
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    • v.22 no.1
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    • pp.65-68
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    • 2017
  • This paper reports simulation and evaluation of the magnetic flux density (MFD) of a rotating Halbach magnet (RHM) composed of a rotating inner Halbach cylinder (HC) and a fixed outer HC. We first chose the dimension of a single HC, then determined the dimensions of an inner and outer HC to get MFD = 2 T. Simulation results were used to guide fabrication of an RHM; its magnetic field in the central axis direction agreed well with simulated values.

Service Quality Measurement of In-Flight Meal Service: A Comparison between Korean and Foreign-Based Airlines

  • Baek, Seung-Hee
    • Journal of Community Nutrition
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    • v.8 no.3
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    • pp.153-159
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    • 2006
  • The current exploratory study investigates and compares the perceptions of the service quality of in-flight meals through the evaluation of recent consumers (within 2 weeks) of services provided by Korean and foreign-based airlines. Twenty (20) items for measuring service quality were categorized into three factor dimensions of 'food quality', 'employee service', and 'professionalism'. Among these, 'employee service' was rated highest by Korean and foreign-based airlines. When items representing each service quality dimension were analyzed and compared, only the 'food quality' dimension of Korean-based airlines was perceived higher than that of other foreign-based airlines. Findings also revealed a spectrum with some items with higher or lower mean values within each service quality dimension. Results of this study can expectedly be used to benefit both from a theoretical and practical point of view by providing empirical data that measure the service quality of in-flight meal service.