• The Journal of the Korea Contents Association
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• v.10 no.5
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• pp.303-313
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• 2010

The purpose of this study is to evaluate the performance efficiency and productivity change of the regional public hospital in Korea. We use DEA(Data Envelopment Analysis) for CCR, BCC model, and MPI(Malmquist Productivity Index). DEA is a useful nonparametric technique for measurement of efficiency of a DMU(Decision Making Unit) and MPI is a evaluation method to measure DMU's productivity change. We utilize 34 regional public hospital's time-series data over 6 years from 2003 to 2008.The results of this study were as follows. First, technical efficiency(TE) shows that approximately 3.6% of inefficiency exists on the regional public hospitals and it reveals that the cause for technical inefficiency is due to scale inefficiency. Second, MPI's results show that regional public hospital made effort to improve total factor productivity change to raise technical efficiency. In order to raise efficiency, the regional public hospitals should deploy internal innovation and the government should support welfare policies.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.4
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• pp.287-297
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• 2020

The research aims to investigate the impact levels of determinants on the loyalty of accountants to FDI firms underlying investment management in Thanglong Industrial Park in Hanoi, Vietnam. We conducted a questionnaire consisting of 31 observation variables with a 5-point Likert scale. Independent variables were measured from 1 "without effect" to 5 "strongly". The method of data collection was done through the survey and subjects are accountants in FDI firms doing business in Thanglong Industrial Park in Hanoi. After checking the information on the votes, there are 120 questionnaires with full information for data entry and analysis, This study employs Cronbach's Alpha test, and regression model. The results show that seven determinants including Working environment, The characteristics of working; Training, promotion prospects and development; Income, Personal characteristic, Collective work together and The method of leading had positive relationships with the loyalty of accountants. Based on the findings, some recommendations are given related to such determinants to improve the loyalty of accountants of FDI firms in general and FDI firms in Thanglong Industrial Park in Hanoi in particular. With which, those firms can enhance performance, reduce financial strain, saving on investment in the recruiting process of new staff, increase profitability to ensure investment management.

• The Journal of the Korea Contents Association
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• v.13 no.2
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• pp.220-234
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• 2013

The purpose of this study is to understand the types and features of subjectivity perceptions of the police by applying Q methodology that draw upon schematic model in subjectivity study. A survey was carried out among police officers in Gangwon province, South Korea, to classify the 61 selected Q-statements into a normal distribution using a 11 point scale. The collected data was analyzed using QUANL program, and principal component factor analysis using varimax rotation was used to identify the types of perceived image of the police. Type I can be categorized by a strong concern for the education & manpower management, Type II can be categorized by advocating for duty observance, Type III can be categorized by the pursuit of publicized police image and Type IV can be categorized by the suggestions for legal improvement. The use of Q methodology provides insights into the image of the police that would not be available through traditional methodologies and offers a foundation for essential efforts to address and overcome concerns about the image of the police.

• Journal of the Korean Institute of Intelligent Systems
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• v.24 no.2
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• pp.166-172
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• 2014

Image classification is an important problem in computer vision. However, it is a very challenging problem due to the variability, ambiguity and scale change that exists in images. In this paper, we propose a method of a hypergraph based modeling can consider the higher-order relationships of semantic attributes of a scene image and apply it to a scene image classification. In order to generate the hypergraph optimized for specific scene category, we propose a novel search method based on a probabilistic subspace method and also propose a method to aggregate the expression values of the member semantic attributes that belongs to the searched subsets based on a linear transformation method via likelihood based estimation. To verify the superiority of the proposed method, we showed that the discrimination power of the feature vector generated by the proposed method is better than existing methods through experiments. And also, in a scene classification experiment, the proposed method shows a competitive classification performance compared with the conventional methods.

• Korean Journal of Adult Nursing
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• v.25 no.1
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• pp.24-32
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• 2013

Purpose: The aim of the study was to identify the most appropriate fall-risk assessment tool for neurological patients in an acute care setting. Methods: This descriptive study compared the reliability and validity of three fall-risk assessment tools (Morse Fall Scale, MFS; St Thomas's Risk Assessment Tool in Falling Elderly Inpatients, STRATIFY; Hendrich II Fall Risk Model, HFRM II). We assessed patients who were admitted to the Department of Neurology, Neurosurgery, and Rehabilitation at Asan Medical Center between July 1 and October 31, 2011, using a constructive questionnaire including general and clinical characteristics, and each item from the three tools. We analyzed inter-rater reliability with the kappa value, and the sensitivity, specificity, predictive value, and the area under the curve (AUC) of the three tools. Results: The analysis included 1,026 patients, and 32 falls occurred during this study. Inter-rater reliability was above 80% in all three tools. and the sensitivity was 50.0% (MFS), 84.4%(STRATIFY), and 59.4%(HFRM II). The AUC of the STRATIFY was 82.8. However, when the cutoff point was regulated as not 50 but 40 points, the AUC of the MFS was higher at 83.7. Conclusion: These results suggest that the STRATIFY may be the best tool for predicting falls for acute neurological patients.

• Journal of The Korean Association of Information Education
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• v.13 no.4
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• pp.471-478
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• 2009

In this paper, we intend to relive game addiction by educating game programming for students that suffer from game addiction. We had analyzed popular games at the present day and extracted factors related to information education from game programming tool. In addition, we had designed the practical lesson plan based on the instructional design model. We had applied the game programming project to students for a year and the results were as follows. First, we verified the drop of addiction propensity by performing the examination of game addiction scale with before and after T-test. Second, according to the results of analysis based on grounded theory, it saved game time and relieved game addiction. In conclusion, this study shows that the game programming project relieved game addiction.

• Journal of Korean Neurosurgical Society
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• v.54 no.2
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• pp.118-124
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• 2013

Objective : Subthalamic nucleus (STN) deep brain stimulation (DBS) is an effective treatment of choice for patients with advanced idiopathic Parkinson's disease (PD) who have motor complication with medication. The objectives of this study are to analyze long-term follow-up data of STN DBS cases and to identify the factors related to outcomes. Methods : Fifty-two PD patients who underwent STN DBS were followed-up for more than 3 years. The Unified Parkinson's Disease Rating Scale (UPDRS) and other clinical profiles were assessed preoperatively and during follow-up. A linear regression model was used to analyze whether factors predict the results of STN DBS. We divided the study individuals into subgroups according to several factors and compared subgroups. Results : Preoperative activity of daily living (ADL) and the magnitude of preoperative levodopa response were shown to predict the improvement in UPDRS part II without medication, and preoperative ADL and levodopa equivalent dose (LED) were shown to predict the improvement in UPDRS part II with medication. In UPDRS part III with medication, the magnitude of preoperative levodopa response was a predicting factor. Conclusion : The intensity of preoperative levodopa response was a strong factor for motor outcome. And preoperative ADL and LED were strong factors for ADL improvement. More vigorous studies should be conducted to elucidate how levodopa-induced motor complications are ameliorated after STN DBS.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.3
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• pp.564-570
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• 2006

This paper presents a new real-time system design methodology for embedded system as well as event-driven real time application. It is required to implement a deadline handling mechanism in order to satisfy a large-scale distributed real time application. When we design real time system, it has handled a deadline and is important to measure / control a timing issue. These timing constraints usually associated with an interface between model and system. There are many case tools that supporting a real time application, for example, UML, graphic language for designing real time system, but they cannot provide efficient way to handle deadline miss. Therefore, users have to design deadline handler manually when they need to use it. This paper contributes solving the problems of user-level deadline handling for an embedded system. Also, it also discusses an efficient deadline handler design mechanism using on RoseRT, which is a graphical CASE tool supporting from UML.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.4
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• pp.861-866
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• 2014

The scale of national research and development work is expanded gradually and grows bigger, so necessity of building system rises to guarantee more objective and fairer selection of business and clarity of budget administration according to active progress of convergence between study territories. In the study, standard frame work is suggested for information connection between dissimilarities, and based on this work; the study considers the system for information connection of digital budget accounting system handling budget and accounting of national finance and national science technology knowledge information system that is in charge of result administration and result evaluation of national research and development work, so suggests application plan of standard frame work connected with information solving current state and problems for connection.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.204-204
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• 2011

최근에 들어 도시화와 이상기후의 영향으로 유역에서의 유출특성과 오염물질 발생특성이 변화하고 있어 이에 따라 체계적인 유역 관리가 요구되고 있다. 우리나라는 하천 및 호소에 대한 수질 관리를 생활하수, 공장폐수 등 점오염원을 중심으로 수질관리정책 및 대책을 추진하여 왔으나, 오염물질의 상당량은 비점오염원에서 유발되고 있다. 또한 오염총량제의 실시 이후 국내에서는 비점오염원 관리의 중요성이 점오염원에 비해 상대적으로 높아짐으로서 유역수질모델링의 중요성을 인식하고 있으며, 비점오염원에 관련된 연구도 활발히 진행되고 있다. 이를 위해 유역의 유출 및 수질 분석을 효율적으로 하기 위해 유역간 물질의 교환 및 전달이 유역 규모에 따라 얼마나 높은 정확성을 나타내는지를 분석하고 이를 검토하여 효과적인 유역수질모델링의 방법이 제시되어야 한다. 본 연구에서는 이러한 통합적 수질관리의 필요성 증대에 따라, 유역 내 수문 순환 및 비점 오염원의 발생 거동을 정량적으로 분석할 수 있는 HSPF(Hydrologic Simulation Program - Fortran) 모형을 통해 오염총량 단위유역을 각각의 소유역으로 순차적으로 모의하여 검 보정을 수행 후 그 결과로 계산된 매개변수들을 단위유역 전체에 대한 분석에 입력하여 수행한 모의 결과와 비교 평가하였다. 또한, 이를 바탕으로 비점오염원에 의한 유역 내 하천 수질 영향도를 파악하였다. 유량 및 수질해석을 위하여 남강유역의 2004년부터 2007년까지 강우와 기상자료, 유량과 오염원 자료를 수집하여 입력 자료를 구축하였다. 또한, 대상유역에 해당되는 환경기초시설의 방류 유량 및 수질을 유입시킴으로써 HSPF모의가 진행되었다. 하천수질에 영향을 줄 수 있는 비점오염원은 강우 및 기상 관련 자료의 입력을 통하여 유역 내 유출 조건의 초기입력을 수행하였으며, 강우 입력에 따른 유출에 영향을 고려하기 위하여 토지이용 및 토양도를 고려하였다. 그리고 유역의 규모를 고려하였을 때 오염총량 단위유역의 유역 규모에 따라 모의를 실시한 결과를 바탕으로 HSPF 모형의 정확성 여부를 판단하여 정확성이 높은 방법을 선택할 수 있도록 하였다. 모의결과 소유역을 순차적으로 모의한 결과(CaseA)가 전체유역을 모의한 결과(CaseB)보다 실측치와 더 높은 상관계수를 나타냄을 알 수 있었다. 본 연구에서의 평가방법을 바탕으로 유역수질모델링이 이루어진다면 추후 비점오염원에 대한 효과적인 관리에 도움이 될 것이며, 모니터링 기법 및 GIS기반 유역관리모델 개발, 4대강 비점오염원 최적관리기법 연구 등에 활용할 수 있을 것으로 사료된다.