• 산업경영시스템학회지
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• 제38권1호
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• pp.83-89
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• 2015

Selection of efficient supplier is a very important process as risk or uncertainty of a supply chain and its environment are increasing. Previous deterministic DEA and probabilistic DEAs are very limited to handle various types of risk and uncertainty. In this paper, I propose an improved probabilistic DEA which consists of two steps; Monte Carlo simulation and statistical decision making. The simulation results show that the proposed method is proper to distinguish supplier's performance and provide statistical decision background.

• Journal of Electrical Engineering and Technology
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• 제11권6호
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• pp.1839-1845
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• 2016

Detecting remote targets is important to active protection system (APS) or infrared search and track (IRST) applications. In normal situation, the well-known constant false alarm rate (CFAR) detector works properly. However, decoys in APS or closely spaced targets in IRST degrade the detection capability by increasing background noise level in the CFAR detector. This paper presents a context aware CFAR detector by the intensity sorting and selection of background region to reduce the effect of neighboring targets that lead to incorrect estimation of background statistics. The existence of neighboring targets can be recognized by intensity sorting where neighboring targets usually show highest ranks. The proposed background statistics (mean, standard deviation) estimation method from median local pixels can be aware of the background context and reduce the effects of the neighboring targets, which increase the signal-to-clutter ratio. The experimental results on the synthetic APS sequence, real adjacent target sequence, and remote pedestrian sequence validated that the proposed method produced an enhanced detection rate with the same false alarm rate compared with the hysteresis-CFAR (H-CFAR) detection.

• 한국축산식품학회지
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• 제21권2호
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• pp.116-125
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• 2001

This survey is carried out in order to understand the perception and eating pattern of chicken further processed product of the housewives in Korea. 894 questionnaires were used for analysis. Chicken is loved by all age groups of people, especially at home of young housewives and of high educational background. The reasons of purchasing chicken further processed products were \"Children(57.8%)\", \"Convenience(43.2%)\" and \"Taste(30.1%)\". The average purchasing frequency of chicken further processed products is \"Once a month\". The criteria for selection of chicken further processed product were \"Hygiene(64.9%)\", \"Expiration date(58.4%)\", \"Brand(25.4%)\", \"Taste(21.9%)\" and \"Price(19.0%)\". Housewives depend on the \"Brand\" in selection of chicken further processed products as the educational background improves. The shopping place of purchasing chicken further processed product were \"Discount store(43.1%)\", Department store(27.4%)\" and so on. The pattern of consumption \"Buy chicken further processed products and cook at home(5.9%)\" was still very low. \"Order for delivery(57.4%)\" increased rapidly for chicken consumption. The housewives suggest to produce chicken further processed products \"Hygienically(16.7%)\", \"Improve taste(12.2%)\" and \"Restrict food additives(11.9%)\" among 311 responses.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제8권1호
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• pp.35-57
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• 2014

Multi-criteria decision making (MCDM) algorithms play an important role in ensuring quality of service in an integrated HetNets (Heterogeneous Networks). The primary objective of this paper is to develop a multi-criteria vertical handoff decision algorithm (VHDA) for best access network selection in an integrated Wireless Local Area Network (WLAN)/Universal Mobile Telecommunications System (UMTS)/Worldwide Interoperability for Microwave Access (WiMAX) system. The proposed design consists of two parts, the first part is the evaluation of an Analytic Hierarchy Process (AHP) to decide the relative weights of handoff decision criteria and the second part computes the final score of the weights to rank network alternatives using Simple Additive Weighting (SAW). SAW ranks the network alternatives in a faster and simpler manner than AHP. The AHP-SAW mathematical model has been designed, evaluated and simulated for streaming video type of traffic. For other traffic type, such as conversational, background and interactive, only simulation results have been discussed and presented in brief. Simulation results reveal that the hierarchical modelling and computing provides optimum solution for access network selection in an integrated environment as obtained results prove to be an acceptable solution to what could be expected in real life scenarios.

• 지식경영연구
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• 제24권1호
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• pp.99-126
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• 2023

문화적 배경은 사회 구성원이 특정한 방향으로 인지하고 행동하도록 기여하는 역할을 하므로, 서로 다른 문화적 배경을 가진 고객들은 같은 서비스를 제공받아도 각자 다른 반응을 보인다. 호텔 방문객들은 서로 다른 문화적 배경을 가지고 있으므로, 호텔에서 제공되는 서비스나 시설에 대한 인식과 만족도 또한 다르다. 이에 따라 기존 연구에서는 Hofstede 문화차원을 활용하여, 호텔 방문객들의 문화적 배경에 따라 제공되는 서비스에 대한 만족도가 어떻게 달라지는지 파악하였다. 그러나 기존 연구에서는 호텔 방문객들의 문화적 배경만 고려하였으며, 여행 유형까지 고려한 연구는 많지 않은 실정이다. 그러나 많은 선행 연구에서 여행 유형에 따라 중요하게 고려하는 호텔 서비스 속성 요인들은 서로 상이한 것으로 나타났다. 따라서 본 연구에서는 호텔 방문객의 여행 유형을 비즈니스 방문객과 여가 관광여행 방문객으로 분류하고, Hofstede의 문화차원이 호텔 선택속성에 끼치는 영향이 여행 유형에 따른 차이를 분석하였다. 이를 위해, Hofstede의 6가지 문화차원에 대한 정보는 Hofstede insights에서 제공하는 오픈 데이터를 사용하였고, 호텔 선택속성에 대한 만족도는 대표적인 관광 플랫폼인 TripAdvisor에서 뉴욕 호텔에 대한 선택속성 평점 204,261개를 수집하였다. 따라서 본 연구는 향후 호텔에 방문하는 다양한 문화권 고객들이 어떠한 서비스 속성에 더 중점을 두는지를 파악할 수 있고, 그에 적합한 서비스를 제공할 수 있을 것으로 기대한다.

• Nutrition Research and Practice
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• 제8권5호
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• pp.595-601
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• 2014

BACKGROUND/OBJECTIVES: Educational interventions targeted food selection perception, knowledge, attitude, and behavior. Education regarding irradiated food was intended to change food selection behavior specific to it. SUBJECTS AND METHODS: There were 43 elementary students (35.0%), 45 middle school students (36.6%), and 35 high school students (28.5%). The first step was research design. Educational targets were selected and informed consent was obtained in step two. An initial survey was conducted as step three. Step four was a 45 minute-long theoretical educational intervention. Step five concluded with a survey and experiment on food selection behavior. RESULTS: As a result of conducting a 45 minute-long education on the principles, actual state of usage, and pros and cons of irradiated food for elementary, middle, and high-school students in Korea, perception, knowledge, attitude, and behavior regarding the irradiated food was significantly higher after the education than before the education (P < 0.000). CONCLUSIONS: The behavior of irradiated food selection shows high correlation with all variables of perception, knowledge, and attitude, and it is necessary to provide information of each level of change in perception, knowledge, and attitude in order to derive proper behavior change, which is the ultimate goal of the education.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 춘계학술대회
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• pp.250-252
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• 2015

창조경제를 내세운 박근혜 정부는 인력채용에 있어서도 학벌, 스펙 위주의 인재선발을 지양한다. 따라서 공공기관이나 기업이 창조경제를 뒷받침할 만한 인재선발을 추진하고 있다. 이를 위해 도입한 방식이 국가직무능력표준 이다. 특히 IT분야는 전 공공기관에서 인재가 필요하다. 따라서 본 논문은 국가직무능력표준의 IT인재 부문을 연구하고, 국가직무능력표준을 적용한 IT인재 선발에 대해 분석한다. 본 논문은 국가 공공기관 뿐만 아니라 창조 경제를 발휘하는 기업에서 필요한 IT인재상에 대한 중요한 연구 자료가 될 것이다.

• 보험의학회지
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• 제26권
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• pp.31-39
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• 2007

Background and main issue: In the Korean insurance market, an outstanding issue is the decrease of margin of risk ratio. This affects the solvency and profitability of insurance companies. Insurance medicine, which has been developed in Western countries, is so-called medical risk selection or medical underwriting. Medical risk selection is based on clinical follow-up study and mortality analysis methodology. Unfortunately, there have been few clinical follow-up studies, and no intercompany disease analysis system is available in the Korean insurance market. In practice, we use underwriting guidelines, which were developed by some global reinsurance companies. However, these guidelines were developed under clinical follow-up studies performed abroad. So, we cannot rule out underestimation of excess mortality factors such as mortality ratio, excess death rate, and life expectancy. It is necessary to perform medical assessment in claims administration. Comparing the insured's statement by medical records with products' benefit according to this procedure, we can make sound claim decisions and participate in the role of sound underwriting. We can call this scientific procedure as the verification of medical claims review. Another area of medical claims review is medical counsel for claims staff. Result: There is another insurance medicine in addition to medical risk selection. Independent medical assessment by medical records of insured is medical claims review. Medical claims review is composed of verification and counsel.

• 한국지하수토양환경학회지:지하수토양환경
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• 제19권6호
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• pp.24-29
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• 2014

To data, there was no systematic basis for establishing the content and allowed levels of general contamination substances in the Korean groundwater quality standards for non-drinking water. Recently, use of specific procedures for deriving valid groundwater quality standards have become mandatory. This study first investigated the methodology for deriving groundwater quality standards in the European Commission (EC), considering background groundwater quality and domestic and international standards related to water quality. Furthermore, this study investigated the existing specified procedure of standards related to water quality (e.g. surface water, drinking water, and wastewater). Our findings showed that EC and Member States presented the methods for deriving groundwater threshold values for general chemicals. Finally, we have proposed the following procedures of deriving Korean groundwater quality: (1) Selection of groundwater pollutant population, (2) selection and monitoring of priority substances, (3) monitoring, (4) selection of groundwater quality standard candidates, (5) selection of new substances and values for groundwater quality standards.

• Journal of Astronomy and Space Sciences
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• 제36권2호
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• pp.97-103
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• 2019

An automated signal-acquisition method for the NASA's space geodesy satellite laser ranging (SGSLR) system is described as a selection of two system parameters with specified probabilities. These parameters are the correlation parameter: the minimum received pulse number for a signal-acquisition and the frame time: the minimum time for the correlation parameter. The probabilities specified are the signal-detection and false-acquisition probabilities to distinguish signals from background noise. The steps of parameter selection are finding the minimum set of values by fitting a curve and performing a graph-domain approximation. However, this selection method is inefficient, not only because of repetition of the entire process if any performance values change, such as the signal and noise count rate, but also because this method is dependent upon system specifications and environmental conditions. Moreover, computation is complicated and graph-domain approximation can introduce inaccuracy. In this study, a new method is proposed to select the parameters via a conditional equation derived from characteristics of the signal-detection and false-acquisition probabilities. The results show that this method yields better efficiency and robustness against changing performance values with simplicity and accuracy and can be easily applied to other satellite laser ranging (SLR) systems.