• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2004년도 제22회 춘계학술대회논문집
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• pp.848-853
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• 2004

Regarding to the project SUAV (Smart Unmanned Aerial Vehicle) in KARI (Korea Aerospace Research Institute), several engine configurations has been evaluated. However it's not an easy task to collect all the necessary data of each engine for the analysis. Usually, some kind of modeling technique is required in order to determine the unknown data. In the present paper a qualitative method for reverse engineering is proposed, in order to identify some design patterns and relationships between parameters. The method can be used to estimate several parameters that usually are not provided by the manufacturer. The method consists of modeling an existing engine and through a simulation, compare its transient behavior with its operating envelope. In the simulation several parameters such as thermodynamics, performance, safety and mechanics concerning to the definition of operation-envelope, have been discussed qualitatively. With the model, all engine parameters can be estimated with acceptable accuracy, making possible the study of dependencies among different parameters such as power-turbine total inertia, TIT, take-off time and part load, in order to check if the engine transient performance is within the design criteria. For more realistic approach and more detailed design requirements, it will be necessary to enhance the compressor map first, and more realistic estimated values must be taken into account for intake-loss, bleed-air and auxiliary power extraction. The relative importance of these “unknown” parameters must be evaluated using sensitivity analysis in the future evaluation. Moreover, fluid dynamics, thermal analysis and stress analysis necessary for the resulting life assessment of en engine, will not be addressed here but in a future paper. With the methodology presented in the paper was possible to infer the relationships between operation-envelope and engine parameters.

• 대한교통학회지
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• 제27권1호
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• pp.191-200
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• 2009

본 연구는 현재 보행교통류율, 보행자지체 등의 정량적인 지표만을 고려하고 있는 기존 보행자 이동공간 서비스수준(Level of Service) 평가의 한계를 극복하고, 보행자의 이동공간(보도 및 횡단보도)만족도에 영향을 미치는 정성적 요인을 반영하여 보행자의 실질적인 서비스 질(QOS : duality of Service)을 측정할 수 있는 통합적 지표를 개발하는 것이 목적이다. 연구를 위한 기초자료 수집은 설문조사를 이용하였고, 통합지표 개발을 위해 계층분석법(AHP)과 네트워크분석법(ANP)을 활용하였다. 주요 연구결과는 첫째, 보행자가 서비스수준을 판단할 경우 중복성을 느끼고 있음을 알 수 있어, 네트워크분석법에 의한 지표를 적용하는 것이 적절함을 확인하였다. 둘째, 보행자 행태, 유지관리, 보행경관 및 환경과 같은 정성적인 요인을 고려해야 한다는 것을 알 수 있었으며 특히 주거지역에서 정성적인 요인의 중요도가 높은 것을 알 수 있었다. 향후 실질적인 보행자 서비스 질을 평가하기 위해서는 정량적인 지표는 물론 정성적인 지표를 고려하는 것이 적절할 것이라 판단된다.

• International Journal of Concrete Structures and Materials
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• 제6권2호
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• pp.87-100
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• 2012

The process of selecting a repair material is a typical one of multi-criteria decision-making (MCDM) problems. In this study Analytical Hierarch Process was applied to solve this MCDM problem. Many factors affecting a process to select an optimal repair material can be classified into quantitative and qualitative requirements and this study handled only quantitative items. Quantitative requirements in the optimal selection model for repair material were divided into two parts, namely, the required chemical performance and the required physical performance. The former is composed of alkali-resistance, chloride permeability and electrical resistivity. The latter is composed of compressive strength, tensile strength, adhesive strength, drying shrinkage, elasticity and thermal expansion. The result of the study shows that this method is the useful and rational engineering approach in the problem concerning the selection of one out of many candidate repair materials even if this study was limited to repair material only for chloride-deteriorated concrete.

• 대한간호학회지
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• 제31권6호
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• pp.967-977
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• 2001

This study explored and described the living spiritual experience and was attempted to gain an understanding of spirituality. This was done by eliciting participants′ verbal descriptions of their experiences. Method: Data was obtained from in-depth interviews with one cancer patient, one pastor, and three missionaries after obtaining informed consent from each. Interviews were tape recorded and transcribed verbatim. The transcripts were analyzed using Colaizzi′s phenomenological method. Sandelowski′s evaluation criteria for qualitative research, such as reliability, suitability and auditability, were also used to establish reliability and validity of this study. Result: The five major theme clusters that designated the essence of the spiritual experience, "spiritual awareness," "interconnectedness," "love," "tran- scendent energy," "purpose and meaning in life," emerged from the analysis. Conclusion: This study revealed that spirituality was activated by awareness through introspection and interconnectedness with a Supreme Being. The interconnectedness with a Supreme Being played an important role in harmonious relationships with others and self. It also resulted in revealing the other beneticial attributes of spirituality. Love, the core concept of the interconnectedness, worked as a transcendent energy. Also, the ability to see beyond reality and resulted in finding meaning in life and accomplishing well being.

• 한국측량학회지
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• 제37권2호
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• pp.91-97
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• 2019

In automatic map generalization, the formalization of cartographic principles is important. This study proposes and evaluates the selection method for road network generalization that analyzes existing maps using reverse engineering and formalizes the selection rules for the road network. Existing maps with a 1:5,000 scale and a 1:25,000 scale are compared, and the criteria for selection of the road network data and the relative importance of each network object are determined and analyzed using $T{\ddot{o}}pfer^{\prime}s$ Radical Law as well as the logistic regression model. The selection model derived from the analysis result is applied to the test data, and road network data for the 1:25,000 scale map are generated from the digital topographic map on a 1:5,000 scale. The selected road network is compared with the existing road network data on the 1:25,000 scale for a qualitative and quantitative evaluation. The result indicates that more than 80% of road objects are matched to existing data.

• 대한산업공학회지
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• 제43권1호
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• pp.49-61
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• 2017

This paper proposes an R&D project selection methodology for green technology centered on developing country-oriented technology commercialization. Eight selection criteria are derived from the R&BD logic model : technology needs of developing countries, effectiveness of green technology, technological potentials, domestic technological capability, commercialization feasibility, economic benefits, business feasibility, and spillover effects of developing countries. 21 qualitative and quantitative indicators are then defined for each criterion. The analytic hierarchy process is conducted to produce relative importance of evaluation indicators and to set final priority scores of R&D project candidates. The working of the proposed methodology is provided with the help of a case study example of Green Technology Center. The proposed methodology is expected to be effectively utilized for policy practices of R&D project selection in the field of green technology.

• 한국환경과학회지
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• 제29권5호
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• pp.551-558
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• 2020

This study aims to increase the ability to adapt to the ecosystem and promote a sustainable use of the natural environment, by classifying the types of damaged lands according to various factors, such as the characteristics of the target area and form, cause, and impact of damage. Moreover, the study suggests the development of evaluation categories and criteria by each type. The results obtained are as follows: first, for the assessment of damaged lands, the changed areas were identified utilizing land cover maps. Video analysis was performed to increase the accuracy, and 88 sites were obtained. Second, the types of damage were classified into ecological infrastructure and ecological environment, and the sub-factors of the cause of damage were classified into 12 factors. Third, each evaluation system for the types of damage was composed of four steps, considering each type of damage and the level of evaluators being higher than paraprofessionals. To supplement this study, it will be necessary to utilize the database of damaged lands other than the Seoul Metropolitan Area and conduct an on-site survey for verification in the future.

• The Journal of Asian Finance, Economics and Business
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• 제6권1호
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• pp.321-328
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• 2019

The purpose of the study is to analyze the main approaches to assessing human capital and develop proposals for its most objective assessment of it at the different levels of manifestation - individual, microeconomic and macroeconomic. The article considers the basic approaches to the evaluation of human capital, used in practice: retrospective (costly) and prospective (income based). Cost based methods involve measuring the value of human capital based on the total costs associated with its formation. The proposed additional evaluation criteria, in particular, the use of the expert approach and the developed indicators of a qualitative assessment of the human capital of the enterprise will allow development that is more efficient and use of available human resources. Human capital is becoming a major factor in the formation and development of an innovative economy and knowledge economy. Accordingly, the proposed additions to the assessment of human capital at the country level are aimed at assessing it from a new angle, taking into account the current global trends in the formation of an innovative economy and digitalization. They meet qualitatively new requirements for human capital as the main productive factor in the creation of new highly efficient technologies that promote the active development of the social sphere, science, education, health, etc.

• 한국컴퓨터정보학회논문지
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• 제11권5호
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• pp.139-148
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• 2006

본 논문은 멀티미디어 웹 사이트의 사용성 품질 평가를 위한 품질 기준과 웹 메트릭을 제안하고자 한다. 최근 들어 웹 사이트의 활용이 새로운 기술과 접목되어 산업 전반에 결쳐 다양하게 사용되고 있다. 또한 초고속 통신망이 일반화되면서, 그동안 네트워크의 속도 문제로 제한적으로 사용되었던 멀티미디어의 활용이 증가하면서 멀티미디어 웹 사이트가 증가하는 추세이다. 따라서 본 논문은 기존의 소프트웨어 공학, HCI, 하이퍼미디어 분야에서 연구되어온 HTML기반의 품질 평가의 연구를 멀티미디어 웹 사이트로 확장하고, 멀티미디어 웹 사이트에서 큰 비중을 차지하는 플래시 사용성을 접목하여 새로운 웹 메트릭을 제안하였다. 본 논문에서 제안된 웹 메트릭은 전문가 평가를 통하여 검증을 하였다. 또한 박물관을 도메인으로 하여 웹 어워드 코리아에서 수상한 웹 사이트와 비수상 웹 사이트를 정량적이고 정성적인 품질 평가를 통하여, 운용중인 멀티미디어 웹 사이트의 품질 평가가 가능한 것을 비교 검증하였다. 본 논문으로 향후 고품질의 멀티미디어 웹 사이트 개발의 기반이 될 것이다.

• 한국산학기술학회논문지
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• 제9권3호
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• pp.742-756
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• 2008

최근 산업분야 제품의 양적, 질적 확대와 더불어 이와 관련된 응용 기술의 사용이 증가하고 있다. 그 중의 하나가 산업분야에서 사용되는 소프트웨어라 할 수 있는데, 이러한 소프트웨어는 현재 산업용 장비를 활용하는데 있어 가장 중요시되는 부분이라 할 수 있다. 따라서 산업용 장비를 이용하여 해당 작업을 수행하는데 있어 두뇌역할을 담당하는 소프트웨어는 그것의 품질에 따라 해당 장비의 성능을 나타낸다 할 수 있다. 이러한 시점에서 산업용 장비에 내장되는 소프트웨어의 품질에 대한 평가와 이를 통한 품질향상 의식이 고취되고 있으며 이러한 요구에 따라 관련 연구개발이 국내외적으로 이루어지고 있다. 이에 본 논문에서는 소프트웨어 품질을 측정, 평가하기 위하여 소프트웨어의 일반적 품질 요구사항을 위한 국제표준인 ISO/IEC 12119, 소프트웨어 품질특성 및 부특성 평가를 위한 국제표준인 ISO9126을 바탕으로 평가 메트릭을 구축하였고, 이의 수행을 위하여 평가모듈의 구성을 위한 국제표준인 ISO/IEC 14598을 바탕으로 산업용 소프트웨어의 정략적인 품질을 측정, 평가하여 품질측정의 결과를 토대로 품질을 인증하는 산업용 소프트웨어 국제표준 적합성 인증 시스템을 설계 및 구현하였다.