• Title/Summary/Keyword: transforming characteristics

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A scheduling algorithm for conditonal resources sharing consideration (조건부 자원 공유를 고려한 스케쥴링 알고리즘)

  • 인지호;정정화
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.33A no.2
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    • pp.196-204
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    • 1996
  • This paper presents a new scheduling algorithm, which is the most improtant subtask in the high level synthesis. The proposed algorithm performs scheduling in consideration of resource sharing concept based on characteristics of conditionsla bransches in the intermediate data structure. CDFG (control data flow graph) generated by a VHDL analyzer. This algorithm constructs a conditon graph based on time frame of each operation using both the ASAP and the ALAP scheduling algorithm. The conditon priority is obtained from the condition graph constructed from each conditional brance. The determined condition priority implies the sequential order of transforming the CDFG with conditonal branches into the CDFG without conditional branches. To minimize resource cost, the CDFG with conditional branches are transformed into the CDFG without conditonal brancehs according to the condition priority. Considering the data dependency, the hardware constraints, and the data execution time constraints, each operation in the transformed CDFG is assigned ot control steps. Such assigning of unscheduled operations into contorl steps implies the performance of the scheduling in the consecutive movement of operations. The effectiveness of this algorithm is hsown by the experiment for the benchmark circuits.

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인도 소프트웨어산업의 혁신과 정부정책의 역할

  • 전황수;현창희
    • Journal of Technology Innovation
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    • v.9 no.2
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    • pp.120-139
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    • 2001
  • The purpose of this paper is to evaluate the Indian Software Industry and t government's industrial policy by analysing the characteristics of the software industry, authority, development process, social infrastructure, and public sector. The Information age is creating profound changes in the way we live and work. It is transforming all aspects of society, stimulating new opportunities. Over the past decade, India has deliberately prepared itself to meet the new challenges of the information age. India became an important player in shaping world software industry. Through the industrial policy, Indian government is focusing on 1) the development of software industry, 2) dramatic increase in IT scientists engineers, and the promotion of education institutes, 3) the establishment of the software technology Parks (STP), 4) the inducement of foreign direct investment, 5) extensive standardization, 6) the coordination of the law and system. India has liberalized finance and telecommunications system in an effort to bring in more business, and has revamped education curriculums to encourage more creativity among students. Government has played crucial role in bringing India one of advanced software nation by presenting the grand vision and sophisticated plan, liberalizing telecommunication market, and enhancing the efficiency of bureaucratic system.

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Design of sliding mode controller for uncertain multivariable systems in the absence of matching conditions (정합조건이 만족되지 않는 불확실한 다변수 계통에 대한 슬라이딩 모드 제어기의 설계)

  • 천희영;박귀태;김동식;임성준;공진수
    • 제어로봇시스템학회:학술대회논문집
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    • 1990.10a
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    • pp.439-445
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    • 1990
  • All models of dynamical systems invariably have some measure of uncertainties associated with some of their dynamics. The recent approaches to establish robustness of stabilizing feedback control against the possible uncertainties have a serious limitation, that is their applicability only to the systems that satisfy the matching conditions. Such conditions are rarely met in general applications. If a particular system satisfies the matching conditions, the addition of an actuator will destroy the satisfaction of such conditions. In this paper, we develop robust control algorithm for uncertain multivariable systems in which the matching conditions are not necessarily met. We empoly Lyapunov's second method to derive robust stabilizing controllers which guarantee asymptotic stability against prescribed uncertainties. The derivation consists of transforming the original uncertain system to controllable canonical form and constructing a constant switching surface by designing the closed-loop characteristics as a function of the uncertainties. Numerical examples are discussed as illustrations.

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A study on the architectural guideline of the patient room in the geriatric medical center (노인보건의료센터의 다인병실 건축계획에 관한 연구)

  • Yun, Wooyong;Chai, Choul Gyun
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.17 no.3
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    • pp.17-26
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    • 2011
  • Nowadays, Korean society is quickly transforming into an aging society. There are lots of problems resulting from old aged society. First of all, in the case of medical service, it is an urgent task to find out what is the most proper care for the elderly in order to reduce medical expenses. It can be said that the geriatric hospital has to be designed to give adequate medical service to the elderly. However, it is hard to find out what the differences is between the general hospital and the geriatric hospital. Especially, the plan of the patient room has to reflect thoughtful consideration relating to characteristics of the elderly due to the fact that there is a close connection between the patient room and residence. Therefore this study aims to suggest the guideline and the plan of the patient room for the elderly.

Project Performance Improvement of Employees: A Psychological Empowerment Approach

  • Oh, Sung-Tae;Kim, Sodam;Kim, Hee-Woong
    • Asia pacific journal of information systems
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    • v.26 no.4
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    • pp.509-525
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    • 2016
  • According to the dynamic changes in the business environment, the structural transformation of firms has had an observable trend. An increasingly large number of firms have been transforming into either project-based organizations or project expert groups. This study aims to investigate the antecedents required for the optimal level of empowerment with consideration of the project-based team environmental nature and job characteristic. Three factors are applied to measure the significant effects on psychological empowerment as the result variables. To determine the antecedents and consequent factors of psychological empowerment, employees' interviews and precedent studies are used. For the empirical study, four determinants of empowerment variables are modeled into a second-order reflective construct. This study finds that psychological empowerment significantly affects performance. Therefore, this study can serve as a guideline for development and operating methods for project success.

A Study on Reduction of Computation Time through Adjustment the Frequency Interval Information in the G.723.1 Vocoder (G.723.1 보코더에서 주파수 간격 정보조절을 통한 계산량 감소에 관한 연구)

  • 민소연;김영규;배명진
    • Proceedings of the IEEK Conference
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    • 2002.06d
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    • pp.405-408
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    • 2002
  • LSP(Line Spectrum Pairs) Parameter is used for speech analysis in vocoders or recognizers since it has advantages of constant spectrum sensitivity. low spectrum distortion and easy linear interpolation. However the method of transforming LPC(Linear Predictive Coding) into LSP is so complex that it takes much time to compute. Among conventional methods, the real root method is considerably simpler than others, but nevertheless, it still suffers from its jndeterministic computation time because the root searching is processed sequentially in frequency region. We suggest a method of reducing the LSP transformation time using voice characteristics The proposed method is to apply search order and interval differently according to the distribution of LSP parameters. in comparison with the conventional real root method, the proposed method results in about 46.5% reduction. And, the total computation time is reduce to about 5% in the G.723.1 vocoder.

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LOD Representation for the Realtime Simulation of Flocking Objects (군집행동개체의 실시간 애니메이션을 위한 단계별 상세화 표현)

  • Cho S.H.;Chai Y.H.
    • Korean Journal of Computational Design and Engineering
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    • v.10 no.5
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    • pp.339-348
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    • 2005
  • In this paper, LOD (Level Of Detail) for flocking, which is the real-time simulation on the movement or some groups such as fighting soldiers, moving fishes and flying birds, is presented. And a flocking LOD algorithm that uses factors such as the speed of fish, direction, and shape is proposed. Model data is modified for LOD in advance, so as to reduce strange edge collapse and unwanted holes. The errors of model data were identified by transforming polygonal model into octree-based cubes and revised before rendering. Experimental results show that the proposed algorithm considering flocking characteristics shows fast frame rates as compared with the conventional continuous LOD algorithm.

Structure and Form Derived from Folding; from Pleated Shape to Deployable Structure (폴딩을 이용한 구조와 형태)

  • Park, Sun-Woo;Choi, Sun-Young;Choi, Chui-Kyung
    • Journal of Korean Association for Spatial Structures
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    • v.7 no.2 s.24
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    • pp.45-52
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    • 2007
  • The purpose of this study is to explore folding as a tool diversifying structures and shapes or forms, and to consider the role and possibilities as structural design sources. First, the morphological characteristics and the elements for transforming pattern of folding are investigated and the way of forming space is also shown. Secondly, the application methods and systems of folding are descrived.

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Numerical simulation for predicting thermal performance of a fin-tube heat exchanger using one-dimensionalized refrigerant circuit (1 차원 배열화된 냉매유로를 이용한 휜-관 열교환기 성능예측)

  • Kim, Doo-Hwan;Ye, Huee-Youl;Lee, Kwan-Soo;Cha, Woo-Ho
    • Proceedings of the KSME Conference
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    • 2008.11b
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    • pp.2011-2016
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    • 2008
  • A new method is presented for developing a simulation program which can analyze the heat transfer characteristics of fin-tube heat exchanger. This method is able to describe several types of refrigerant circuit arrangement. The delivery path of air and refrigerant properties is simplified by transforming three-dimensional array into one-dimensional array. By comparing simulated results with experiment results, the deviation was 8.2%. Several fin-tube heat exchangers of different design factors and operating conditions were simulated using this program. It was shown that this program could be used for designing practical fin-tube heat exchangers.

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Performance Evaluation of a Fin-Tube Heat Exchanger Using One-Dimensionalized Refrigerant Circuit (냉매유로를 1차원 배열화한 휜-관 열교환기 성능해석)

  • Kim, Doo-Hwan;Ye, Huee-Youl;Lee, Kwan-Soo;Cha, Woo-Ho
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.20 no.12
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    • pp.833-843
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    • 2008
  • A new method is presented for developing a simulation program which can analyze the heat transfer characteristics of fin-tube heat exchanger. This method is able to describe several types of refrigerant circuit arrangement. The delivery path of air and refrigerant properties is simplified by transforming three-dimensional array into one-dimensional array. By comparing simulated results with experiment results, the deviation was 8.2%. Several fin-tube heat exchangers of different design factors and operating conditions were simulated using this program. It was shown that this program could be used for designing practical fin-tube heat exchangers.