• Title/Summary/Keyword: functional and efficient evaluation

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Tool Development for Evaluation of Quantitative Independency Between FRs in Axiomatic Design

  • Hwang, Yun-Dong;Cha, Sung-Woon;Kang, Young-Ju
    • International Journal of Precision Engineering and Manufacturing
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    • v.3 no.2
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    • pp.52-60
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    • 2002
  • Axiomatic Design is the one of many useful methods for making a good design. In this method, the independency of Functional Requirements (FRs) is an important property to determine whether the design is good or not. Until now so many designers have decided the independency between FRs by their own decisions. The way depending on inspiration is simple and fast, but it can not be considered as a precise conclusion. Also there are not exact rule that evaluate the quantitative independence between FRs. This paper will show the way to evaluate the quantitative independence of FRs from the comparison between FRs of lower levels, and develop more efficient and objective tool in Axiomatic Design.

A Study on the Resilience-Based Performance Evaluation Method of Structures and Their Application Plan (구조물의 회복탄력성 기반 성능평가법에 대한 고찰 및 적용 방안에 관한 연구)

  • Kim, Yu-Seong;Kang, Joo-Won;Lee, Joon-Ho
    • Journal of Korean Association for Spatial Structures
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    • v.20 no.4
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    • pp.159-167
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    • 2020
  • The resilience performance evaluation method of a structure can evaluate the ability to recover after an earthquake disaster, and this study deals with the consideration and introduction of the resilience performance evaluation method. The resilience evaluation method can be expressed as a quantified number by constructing a loss estimation model and a recovery evaluation model. The recovery evaluation model should consider downtime in addition to the repair time, and the loss estimation model should consider not only direct loss to structures and non-structures, but also indirect loss due to functional loss of the building. In addition, to build a loss estimation model, the structure should be simplified to perform an efficient analysis. Therefore, in this study, the equivalent terminal induction system proposed cantilever-type and rahmen-type SDOF, and it is evaluated somewhat conservatively compared to the example structure, and it is judged that there is a need to improve the hysteresis characteristics by applying the stiffness reduction factor of the SDOF model.

An area-efficient reed-solomon decoder/encoder architecture for digital VCRs (회로 크기면에서 효율적인 디지털 VCR용 리드-솔로몬 디코어/인코더 구조)

  • 권성훈;박동경
    • Journal of the Korean Institute of Telematics and Electronics C
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    • v.34C no.11
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    • pp.39-46
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    • 1997
  • In this paper, we propose an area-efficient architecture of a reed-solomon (RS) decoder/encoder for digital VCRs. The new architecture of the decoder/encoder targeted to reduce the circit size and decoding latency has the following two features. First, area-efficeincy has been significantly improved by sharing a functional block for encoding, modified syndrome computation, and erasure locator polynomial evaluation. Second, modified euclid's algorithms has been implemented by using a new architecture. Experimental results have showed that the decoder/encoder designed by using the proposed method has been implemented with 25% smaller sie over straight forware implementation based on the conventional method [1] and the decoding latency has been reduced.

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A Case Report of Intervention Strategy applied ICF Tool about Floor to Stand and Stand to Floor for Stroke Patient (ICF Tool을 적용한 뇌졸중 환자의 바닥에 앉고 일어서기에 대한 중재전략의 증례)

  • Yun, Tae-Won;Kim, Tae-Yoon
    • Journal of Korean Physical Therapy Science
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    • v.18 no.1
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    • pp.33-49
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    • 2011
  • The process of physical therapy uses a problem-solving approach to enhance a patients's functioning status. The International Classification of Functioning, Disability and Health(ICF) is the common concept for the functioning in the world. Physical therapists require the ability to identify problems, formulate hypothesis, and plan intervention strategies through clinical reasoning. In the clinical process, physical therapists need to use standard and common languages in speech and in documentation. The purpose of this study was to suggest the process of making strategy for efficient intervention, examining and evaluating the functional problem of the person with stroke using ICF tools. For the first step in this process model, therapists could list the information relating to functional problems used by the ICF Core set and then could identify the interaction among the problems using the ICF assessment sheet. For the next step, therapist is needed to make the hypothesis and hypothesis testing, and then set a primary functional goals and therapeutic goals in detail after prioritizing the problems to be managed based on the problem list. Finally, after setting the identified problems as the purpose of intervention through the hypothesis testing, therapist could do some intervention after making a plan to solve these problems, and find out the outcomes using the ICF evaluation display. This report illustrates how to apply the process based on ICF concept into physical therapy practice. Making a decision for the most efficient intervention requires that therapists use the clinical reasoning process based on ICF concept.

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The Validation Test process and CTE Suitability Evaluation based on IEC-61508 for Improving Safety and Reliability on Unmanned ICT Parcel Storage

  • Myung Sung Kim;Young Min Kim
    • International journal of advanced smart convergence
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    • v.12 no.3
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    • pp.233-243
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    • 2023
  • In modern society, since the expansion of the e-commerce market and the spread of the pandemic, face-to-face business are gradually changing to non-face-to-face. In the logistics industry, the demand for unmanned courier storage is increasing due to lack of loading space from urbanization and courier theft accidents. As the demand for unmanned parcel lockers increases, improved functions such as food storage and efficient space loading are required. This study develops an integrated model-based evaluation procedure of product based on performance factors according to the IEC 61508 standard for newly unmanned parcel storage devices with active loading technology, and derive Critical Technology Element based on the product's core functions and performance goals. As proposing these research, We expect improve the safety and reliability of development targets by identifying and evaluating elements.

Study on Functional Assessment of Oversea Container Terminal by Data Analysis on Container Handling (컨테이너터미널의 하역데이터 분석에 의한 기능성 평가에 관한 연구)

  • Kim, Hwa-Young
    • Journal of Korea Port Economic Association
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    • v.23 no.2
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    • pp.121-144
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    • 2007
  • In general, the design of container yard and container handling system on container terminal are focused on operation of shipside than service about chassis from outside(C/O). It is not efficient for chassis from outside. The purpose of this paper is functional assessment of efficient container terminal and for higher performance of container terminal. first, the items which are concerned with container handling at the planning of container terminal are investigated and extracted through the practical data analysis of container terminal. Also, verified problems of planning and present condition through the functional assessment. Secondly, the improvements for container throughput in container yard are proposed and examined the effectiveness of improvements about queuing time of chassis from outside and service time of transfer crane by the evaluation decision model based upon multi criteria objectives.

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Optimal Inspection Model for Dependent Product Quality (종속품질의 최적검사 수리모형)

  • 유정상
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.21 no.47
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    • pp.101-112
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    • 1998
  • Recently, researchers show growing interest on product quality characteristic dependence and designing acceptance sampling plans under the quality dependence. This research intends to resolve a few theoretical and practical questions for better application of acceptance sampling when the quality characteristic of product items exhibits a statistical dependence and samples are inspected according to the production order. In this research, a mathematical programming model is developed for the economic modeling of sampling plans based on two evaluation criteria : the average outgoing quality(AOQ) and the average total inspection cost. An efficient solution procedure is then proposed using the functional structure of the two evaluation criteria and the procedure is numerically illustrated.

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Financial Performance Evaluation using Self-Organizing Maps: The Case of Korean Listed Companies (자기조직화 지도를 이용한 한국 기업의 재무성과 평가)

  • 민재형;이영찬
    • Journal of the Korean Operations Research and Management Science Society
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    • v.26 no.3
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    • pp.1-20
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    • 2001
  • The amount of financial information in sophisticated large data bases is huge and makes interfirm performance comparisons very difficult or at least very time consuming. The purpose of this paper is to investigate whether neural networks in the form of self-organizing maps (SOM) can be successfully employed to manage the complexity for competitive financial benchmarking. SOM is known to be very effective to visualize results by projecting multi-dimensional financial data into two-dimensional output space. Using the SOM, we overcome the problems of finding an appropriate underlying distribution and the functional form of data when structuring and analyzing a large data base, and show an efficient procedure of competitive financial benchmarking through clustering firms on two-dimensional visual space according to their respective financial competitiveness. For the empirical purpose, we analyze the data base of annual reports of 100 Korean listed companies over the years 1998, 1999, and 2000.

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A Study of Matrix Model for Core Quality Measurement based on the Structure and Function Diagnosis of IoT Networks (구조 및 기능 진단을 토대로 한 IoT네트워크 핵심품질 매트릭스 모델 연구)

  • Noh, SiChoon;Kim, Jeom Goo
    • Convergence Security Journal
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    • v.14 no.7
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    • pp.45-51
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    • 2014
  • The most important point in the QoS management system to ensure the quality of the IoT system design goal is quality measurement system and the quality evaluation system. This research study is a matrix model for the IoT based on key quality measures by diagnosis system structure and function. Developing for the quality metrics measured Internet of Things environment will provide the foundation for the Internet of Things quality measurement/analysis. IoT matrix system for quality evaluation is a method to describe the functional requirements and the quality requirements in a single unified table for quality estimation performed. Comprehensive functional requirements and quality requirements by assessing the association can improve the reliability and usability evaluation. When applying the proposed method IoT quality can be improved while reducing the QoS signaling, the processing, the basis for more efficient quality assurances as a whole.

A Study on Proposing of Evaluation Factors for Educational Adequacy of Elementary School Facility (초등학교시설의 교육 지원성 평가요소 제안에 대한 연구)

  • Lee, Hyun-Joo
    • Korean Institute of Interior Design Journal
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    • v.17 no.3
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    • pp.15-22
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    • 2008
  • The purpose of this study is to propose evaluation factors for elementary school facility in terms of educational adequacy. The focal point of this study is to clarify the proper measure of educational facility evaluation in the light of specific characteristics of facility. In order to improve the level of educational adequacy, more information is needed regarding school facility design and various factors which affect to the design. This is important works because such information is essential in implementing facility design to meet the needs of the new educational policy. To get the goal, first, it is attempted to analyse the meaning of design information which deeply affect on the school facility design. The design information is classified into three main aspects, such as human aspect, social aspect and physical aspect. The design information regarding the physical space verses human psychology and behavior belongs to category of human aspect. Pedagogic ideology which varies depend upon the time and regions is classified into the category of social aspect. The Physical aspect means efficient equipment performance of space to support educational activities effectively. Secondly, as for the educational adequacy evaluation concern, it is attempted to select more items which usually has been neglected by the existing evaluation criteria which mainly emphasized functional performances only. With the premise of the above, in this paper, it is attempted to propose proper evaluation factors in terms of educational adequacy for school facilities. As the research methods, researching of literature on this subject, field trip, interview, site analysis, and survey is used.