• Title/Summary/Keyword: Quantitative Criteria

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Quantitative Evaluation of Nonlinear Shape Normalization Methods for the Recognition of Large-Set Handwrittern Characters (대용량 필기체 문자 인식을 위한 비선형 형태 정규화 방법의 정량적 평가)

  • 이성환;박정선
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.30B no.9
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    • pp.84-93
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    • 1993
  • Recently, several nonlinear shape normalization methods have been proposed in order to compensate for the shape distortions in handwritten characters. In this paper, we review these nonlinear shape normalization methods from the two points of view : feature projection and feature density equalization. The former makes feature projection histogram by projecting a certain feature at each point of input image into horizontal-or vertical-axis and the latter equalizes the feature densities of input image by re-sampling the feature projection histogram. A systematic comparison of these methods has been made based on the following criteria: recognition rate, processing speed, computational complexity and measure of variation. Then, we present the result of quantitative evaluation of each method based on these criteria for a large variety of handwritten Hangul syllables.

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Economic Assessment and Application of AHP for Determining the Design of Assembly Line for the Lens Module of Mobile Phone (휴대폰 렌즈모듈 조립라인 설계안 결정을 위한 경제성 분석 및 AHP응용)

  • Moon, Dug-Hee;Lee, Geun-Hyun;Song, Jun-Yeob
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.20 no.4
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    • pp.509-515
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    • 2011
  • When a manufacturing system is designed, various kinds of evaluation methods are used for selecting the best alternative. Net present value, inner rate of return and payback period are popular quantitative measures for the economic assessment, but other qualitative measures should be considered for evaluation. The analytic hierarchy process(AHP) has been used as the popular method for the multi criteria decision making problem that considers both quantitative and qualitative criteria. This paper explains the process of economic assessment, and how to use the AHP for evaluating the designs of the assembly lines for lens module installed in mobile phone.

A Health Performance Evaluation Model of Building Indoor Air Quality (실내공기질의 건강성능 평가모델 연구)

  • ZHENG, QI;Lee, Dong-Hoon;Choi, Jae Hwi;Kim, Sun-Kuk
    • KIEAE Journal
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    • v.10 no.3
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    • pp.3-10
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    • 2010
  • As indoor air quality directly affects health and comforts of the residents, researchers from different countries have continued to explore criteria by which indoor air quality can be indicated in a scientific and quantitative manner over the past several decades. However, there are many possibilities that can deteriorate indoor air quality. Due to the uncertainty of influence factors, it is quite difficult to develop a correct evaluation model and quantitative method. Furthermore, the effects from the indoor air pollutants have different levels, leading to the difficulties to apply the regular standard. This study aims to propose evaluation criteria by using the FD-AHP analysis. Obtained findings will be beneficial to construct apartment buildings, commercial buildings and others health performance evaluation framework.

Development and Validation of a Behaviorally Anchored Rating Scale for Peer Evaluation in Group Projects (조별 과제 동료평가 행동기준평정척도 개발 및 타당화 연구)

  • Shin, Tae Seob
    • Journal of Engineering Education Research
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    • v.21 no.5
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    • pp.32-39
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    • 2018
  • The purpose of this study was to develop and validate a behaviorally anchored rating scale for peer evaluation in group projects based on social interdependence theory. A mixed method involving a qualitative and quantitative approach was used in this study. In the qualitative study, both the individual and group interviews were conducted to college students regarding their cooperative learning experiences. Data from this qualitative research was analyzed based on 5 elements of cooperative learning and 'critical incidents' were extracted from students' own voices that would serve as specific rating criteria in the scale. Once the 'critical incidents' have been incorporated into the scale, validation from 3 independent experts was conducted. In the quantitative study, correlations with relevant variables were analyzed to examine the criteria-referenced validity. Findings suggest that the behaviorally anchored rating scale for peer evaluation in group projects can be used in various team-based learning contexts.

Quantifying user interface usability

  • Park, Kyung S.;Lim, Chee H.
    • Proceedings of the ESK Conference
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    • 1995.04a
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    • pp.16-22
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    • 1995
  • The importance of usability evaluation is increasing in developing a new system and product. The current approaches for usability evaluation are: the comparative evaluation to measure usability, and the iterative user interface design to find usability problems. This paper pressents three types of characteristics and a set of criteria for usability evaluation. The methodology for criteria-based quantitative analysis of user interface usability is investigated with a view to measuring usability. The fuzzy weighted-checklist method with linguistic variables is used for quantitatie analysis. This analysis provides a quantitative measure, which reflects the degree of excellence of user interface usability during the design and development phases.

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Study on the introduction and assessment of the Life Cycle Carbon Emissions in Office Buildings

  • Park, Mincho;Lee, Byeongho;Shin, Sung-Woo
    • KIEAE Journal
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    • v.14 no.1
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    • pp.49-57
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    • 2014
  • Global warming has become a major issue all over the world. Noting the carbon dioxide emissions as a main contributor to global warming, we studied on the methods to reduce the life cycle building carbon emissions. Green Building Certification Criteria(GBCC) has been implemented since 2002 in Korea, but it doesn't estimate the quantities of the $CO_2$ emissions. Therefore, we studied the ways to implement the $CO_2$ emissions in quantity to GBCC. We select a government building which was rated excellent by the GBCC. This office building was regarded to excellent building by GBCC but not good for energy consumption. It was found energy glutton buildings for research by the Ministry of Public Administration and Security in 2010. This part of GBCC is need to be improved.. Also LCA (Life Cycle assessment) was carried out to estimate on carbon footprint on this office building. So we need to implementing quantitative evaluation on the amount of carbon emissions by GBCC. And it is possible to implementing quantitative evaluation on the amount of carbon emissions. Through this study, we expect that quantitative assessment of life cycle carbon emissions of buildings by the GBCC. Also expect to reduce the carbon emissions of the building by improving the GBCC.

A QUANTITATIVE APPROACH FOR ASSESSING THE OVERSEAS BUSINESS CAPABILITIES OF CONSTRUCTION FIRMS

  • Hae Beom Yang;Woosik Jang;Kang-Wook Lee;Heedae Park;Seung Heon. Han;Hyun-woo You
    • International conference on construction engineering and project management
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    • 2013.01a
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    • pp.308-314
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    • 2013
  • Although global construction spending has experienced slow growth due to consecutive economic crises, global contractors have consistently attempted to expand their overseas market share, leading to more intense competition among contractors in the international construction market. In this market environment, owners, clients and financial institutions require reasonable and systematic criteria to effectively assess the business capabilities of international construction firms. However, the existing evaluation methods for construction firms rarely consider overseas-focused business capabilities. To address this problem, this study proposes a quantitative approach to assessing the overseas business capabilities of international construction firms. The limitations of existing approaches are reviewed, and the capabilities required to perform overseas businesses are analyzed through expert interviews. Finally, 18 evaluation indices are suggested in four categories: technology resources, project management, experience and performance, and sustainability. The relative weight of each index is determined according to the Analytical Hierarchy Process (AHP) method, and a preliminary investigation of 11 Korean construction firms is conducted. The proposed method is expected that it will provide the rational criteria for international owners, clients, and financial institutions for decision-making and for evaluating international contractors.

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Development of Various Input Supporting AHP System and Its Application to Strategic Decision Making (다양한 형태의 데이터 입력을 지원하는 AHP 시스템 개발 및 전략적 의사 결정에의 응용)

  • Choi, Sang-Hyun;Kim, Jin-Wook;Han, Kwan-Hee
    • IE interfaces
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    • v.24 no.3
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    • pp.210-219
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    • 2011
  • The traditional AHP(Analytic Hierarchy Process) is to evaluate subjectively the alternatives in the view point of each of criteria and has been widely used at the fields of real world application. The AHP has some drawbacks that makes it difficult to keep the consistency of decision makers' input and take too long to get accurate results because of requiring lots of pairwise comparison between criteria and alternatives. This research is to propose and develop a Hybrid-AHP system for complementing the critical points of traditional AHP methodologies. This system gets the quantitative information as well as qualitative inputs as the comparative ones between criteria and alternatives. We use the input as various type of information such as quantitative values, 9-scale ratings, and fuzzy-based inputs. Finally, we applied the system to the case of choosing strategic industries. The case study have shown the use of various input methods saves processing time, and reduces the input burden of users.

A Study on the Interior Design and Wall Performance Optimizing Method by Using GA and AHP (GA와 AHP를 이용한 실내 디자인과 벽체 성능 최적화 방법에 관한 연구)

  • 진경일;이경회
    • Korean Institute of Interior Design Journal
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    • no.29
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    • pp.86-93
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    • 2001
  • This study presents about the method of alternatives selection by considering wall performance and interior design. Wall is selected fur the object and 3 items of cost, performance, and design as the objective function for optimizing are determined. Thus the wall performance selected problems, which are improvement of insulation performance, sweaty prevention, sound insulation performance and design selected problems, which is satisfactory Improvement of users about Interior design. It is important to select alternatives that can satisfy the performance and design on the capital given as much as possible. But quantitative problem such as performance or expanses and qualitative problem such as design are not in the same dimension. Therefore this problem is a multi-criteria optimization problem and also has used AHP method as the method to solve these. Moreover GA is used to solve a problem of the alternatives occurrence, which is the characteristic of multi-criteria problem. This study presents the solution method on multi-criteria problem that has been mix loaded of quantitative problem and qualitative problem by using AHP(Analytic Hierarchy Process) and GA(Genetic Algorithm).

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Quantitative Difference in the Extinguishing Concentration of Inert Gases with Fire Suppression Criteria in a Cup Burner Test (컵버너시험에서 소화기준에 따른 불활성기체의 소화농도에 대한 정량적 차이)

  • Cho, Jae-Ho;Hwang, Cheol-Hong
    • Fire Science and Engineering
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    • v.28 no.3
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    • pp.34-42
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    • 2014
  • The concentrations of inert gases ($N_2$, Ar, $CO_2$ and He) required to induce the flame instabilities such as swing, rotation, lifted and blow-out were measured in a cup burner nonpremixed flames for $CH_4$ and $C_3H_8$ fuels. Quantitative differences in the extinguishing concentration with fire suppression criteria (i.e. blow-out or onset of flame instability) were also examined. It was found that the difference in extinguishing concentration was increased with the appearance of lifted flame and the low extinguishing performance of inert gaseous. The maximum difference in extinguishing concentration with the suppression criteria was approximately 35% at the highest fuel velocity condition (1.3 cm/s) for the $C_3H_8$-air nonpremixed flame. It can be also expected that the extinguishing concentration by the criteria based on the onset of flame instability will provide the useful information from the viewpoint of the accurate and economical design concentration.