• Spatial Information Research
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• 제7권2호
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• pp.159-173
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• 1999

GIS는 다양한 지구과학분야의 응용에 중요한 방법 중 하나로 인식되고 있으며 최근 지구과학정보의 공간통합을 위한 다양한 방법들이 개발되고 있다. 그러나, 현재 공간분석 통합 결과에 대한 정량화 분석에 대해서는 그다지 많이 연구되고 있지 않으며, 이러한 측면에 일부 기인하여 GIS에서 제공하는 분석기법들을 자연과학분야에의 그대로 적용하는데는 부족한 면이 있다. 본 연구에서는 GIS 공간분석 측면에서 "다중버퍼 영역분석" 이라는 간단한 방법을 소개하고, 실제 자료를 이용하여 광물부존 지역예측 문제에 본 제안 방법을 적용하였다. GIS 측면에서 볼 때, 본 방법은 격자기반 버퍼링 혹은 근접성분석 기법을 지구과학 자료의 해석을 위해 확장하여 응용한 것이다. 본 방법은 GIS의 가장 기본적인 도형 모델인, 점, 선, 면으로 표현할 수 있는 중요한 지질학적 지표 특징에 대하여 지구과학적 현상이나 양상이 주로 원형 상으로 나타나는 경우에 대하여 적용이 가능하다. 이러한 방법을 적용하여 하나의 지질학적 현상을 설명하는데 있어서 항공물리탐사, 지표탐사, 지질조사, 위성 영상 자료 등과같은 복합적인 지구과학자료들이 어떻게 영향을 미치고 있는 가를 정량적으로 밝혀내는 데 이용할 수 있다. 결론적으로 GIS에서 제공하는 분석기법의 적용은 공간 통합에 의한 주제도 작성문제와 연계되어 제한적인 공간 영역내에서 복합적인 입력 자료들에 대한 상호 영향을 추론하는데 활용될 수 있을 것으로 생각된다.

• 대한간호학회지
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• 제34권6호
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• pp.1069-1080
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• 2004

Purpose: The purpose of this study was to develop a socioculturally-appropriate psychosocial intervention program for Korean patients with breast cancer and test its effects on stress, anxiety, depression, and coping strategies. Methods: One group pretest and posttest design was used to test the effects of the intervention. A post-intervention interview was conducted to refine the nature of the intervention. A convenience sample of 10 breast cancer survivors was recruited from the outpatients clinics. Psychosocial intervention was developed to provide the health education, stress management, coping skill training and support weekly(90min) for 6 weeks. Results: There was a significant decrease in stress scores following the intervention(Z= -2.388, p=0.017). However, no significant changes were noted in the use of problem-focused and emotion-focused coping strategies, nor in the changes of anxiety and depression levels. Content analysis of interview data revealed six clusters; changes in perception, changes in problem solving approaches, changes in anger management, changes in life pattern, social support and reduction of perceived stress. Conclusions: Based on quantitative and qualitative data, we recommend the refinements of the intervention in the following areas for future studies: 1) duration, activities, and progression of psychosocial intervention; 2) research design and sample size; and 3) measurements.

• Bulletin of the Korean Chemical Society
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• 제34권6호
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• pp.1823-1828
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• 2013

Tetraoxanes (1,2,4,5-tetraoxanes) have been reported to exhibit potent antimalarial activity. In the present study, the three dimensional-quantitative structure activity relationship (3D-QSAR) studies were performed on a series of tetraoxanes derivatives using comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) techniques. The best predictive CoMFA model with atom fit alignment resulted in cross-validated coefficient ($q^2$) value of 0.719, non-cross-validated coefficient ($r^2$) value of 0.855 with standard error of estimate (SEE) 0.335. Similarly, the best predictive CoMSIA model was derived with $q^2$ of 0.739, $r^2$ of 0.847 and SEE of 0.344. The generated models were externally validated using test sets. The final QSAR models as well as the information gathered from 3D contour maps should be useful for the design of novel tetraoxanes having improved antimalarial activity.

• The Journal of Asian Finance, Economics and Business
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• 제7권6호
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• pp.409-416
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• 2020

The research has been conducted to explore the combination of three intangible resources, including social capital, entrepreneurship, and resilience capability on the performance of State Capital Enterprises (SCEs) in Vietnam. Both qualitative and quantitative approaches are applied in the study. An in-depth interview of ten CEOs at SCEs in Vietnam was made to explore new indicators for the contextual latent variables in the research models. By employing the data from the authors' survey of 568 SCEs in Vietnam in 2019, using Cronbach's alpha, confirmatory factor analysis (CFA) and path analysis (SEM), the mechanism that social capital impacts on SCE performance has been analyzed. In addition to the direct role, social capital indirectly affects corporate performance through entrepreneurship and resilience capability. It was found that social capital has a larger impact on entrepreneurship than resilience capacity. However, the contribution of resilience capacity to the firm performance is much more than the entrepreneurship's in Vietnamese context. This study enriches the theory by proposing a measurement scale of the contextual latent variables as a result of in-depth interviews with experts using a qualitative analysis technique. In addition, the path analysis findings suggest practical implications for managers to effectively use their resources in SCEs.

• 한국군사과학기술학회지
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• 제19권6호
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• pp.730-743
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• 2016

Network-Centric Warfare is a forthcoming military revolution paradigm for maximizing combat effectiveness in terms of information superiority. However, quantitative assessment of information effect is a challenging issue. Among the many approaches, war-game is a well known method to evaluate combat effectiveness. However, previous researches and current models have a limited function or logic to simulate information process, which is core concept of NCW. So this research suggests a concept of simulation modeling method to describe the information process as defining of combat information process based on probability decision model. In addition, we suggest a simple scenario to represent proposed concept modelling method. This results can be used in designing war-game analysis model for enhanced information effectiveness.

• International Journal of Contents
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• 제4권3호
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• pp.16-19
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• 2008

The purpose of this paper is to attempt the analysis of the 'Positivist' School and the 'Interpretative' School to the Relationship between Theory and Method, Using examples from Criminological Research. The differences between approach of the positivist school and interpretative school are often made very difficult to make an approach. What are more to focus on are the relationships between quantitative research and positivism and qualitative research and interpretative paradigms are often presented as essential connections. Therefore, it is a lot more difficult to imply an appropriate research method and process depends on the subject and field of the research topic. The differences between types of research and also the connections which are made between types of research and theoretical paradigms portray a very simple picture. The danger of this is that two readily available set of research methods and assuming that positivist and interpretative research style represent competing approaches and also that they present 'either-or' alternatives as to strategies of research. For example, in some instances positivist and interpretative's methods do represent alternatives but in some case, positivist and interprativist each other can complement about each other's defects in terms of use of methodology. Though depending according to the specialist of the topic, it needs sensitivity to the potentials and the contributions of different styles of data and different methods of information collection and analysis to the criminological issues under test and to the theoretical questions being asked of them.

• 한국작물학회지
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• 제59권2호
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• pp.109-127
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• 2014

Maize is one of the most important food and feed crops in the world including Southeast Asia. In spite of numberous efforts with conventional breeding, the maize productions remain low and the loss of yields by drought and downy mildew are still severe in Asia. Genetic improvement of maize has been performed with molecular marker and genetic engineering. Because maize is one of the most widely studied crop for its own genome and has tremendous diversity and variant, maize is considered as a forefront crop in development and estimation of molecular markers for agricultural useful trait in genetics and breeding. Using QTL (Quantitative Trait Loci) and MAS (Marker Assisted Breeding), molecular breeders are able to accelerate the development of drought tolerance or downy mildew resistance maize genotype. The present paper overviews QTL/MAS approaches towards improvement of maize production against drought and downy mildew. We also discuss here the trends and importance of molecular marker and mapping population in maize breeding.

• 한국시스템다이내믹스연구
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• 제9권2호
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• pp.77-103
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• 2008

In order to respond dynamic changes in the global distribution system, the City of Pyeongtaek hope to expand port facilities and its hinterlands. In specific, it plans to designate these areas as free economic zones(FEZ), synthesizing the whole procedures from the development proposals to the operation and management. This paper examines the proposed urban development strategies focused on Pyeongtaek port which still reveals critical weakness as a gateway port backed up by the Seoul Metropolitan Areas. In order to enhance the global competitiveness of Pyeongtaek port, theoretically it depends on Geo Coyle's ACTIFELD methods. In addition to the traditional quantitative data, Coyle's ACTIFELD methods emphasize qualitative approaches, all of which would facilitate structural and systemic analyses of complex social phenomena. Applying ACTIFELD methods, this paper proposes that the City of Pyeongtaek should focus on three alternatives. That is, Pyeongtaek's policy priority should be given to ts he port city based on the key concepts of Supply Chain Management(SCM), Co-opetition supporting city, and waterfront-initiated urban development.

• 정보처리학회논문지C
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• 제8C권1호
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• pp.68-74
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• 2001

본 논문에서는 네트워크 관리 시스템에서 SNMP(Simple Network Management Protocol) 프로토콜을 이용한 중앙 집중형 방식과 이동 에이젠트(mobile agent)를 이용한 분산방식 각각의 성능을 평가하기 위한 성능평가 모델을 제시한다. 먼저 균등 네트워크 상에서 적용 가능한 모델을 제시하고 실제 실험을 통하여 각 파라미터 값의 변화에 따른 네트워크 수행 시간을 비교한다. 다음으로 비균등 네트워크에 적용 가능하도록 모델을 확장하고, 제시한 모델을 응용하여 실제 가상의 시나리오 하에서 네트워크 소요시간을 줄일 수 있는 방안과 그에 대한 실험 결과를 제시한다. 본 성능평가 모델은 차후 네트워크 관리시스템을 개발할 때에, 효율적인 패러타임(paradigm)과 수행 구조를 선택하는데 도움이 될 수 있을 것이다.

• 대한간호학회지
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• 제41권4호
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• pp.510-519
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• 2011

Purpose: The purposes of this study were to identify the factors influencing service quality in nursing homes, and to develop an evaluation instrument for service quality. Methods: A three-phase process was employed for the study. 1) The important factors to evaluate the service quality in nursing homes were identified through a literature review, panel discussion and focus group interview, 2) the evaluation instrument was developed, and 3) validity and reliability of the study instrument were tested by factor analysis, Pearson correlation coefficient, Cronbach's ${\alpha}$ and Cohen's Kappa. Results: Factor analysis showed that the factors influencing service quality in nursing homes were healthcare, diet/assistance, therapy, environment and staff. To improve objectivity of the instrument, quantitative as well as qualitative evaluation approaches were adopted. The study instrument was developed with 30 items and showed acceptable construct validity. The criterion-related validity was a Pearson correlation coefficient of .85 in 151 care facilities. The internal consistency was Cronbach's ${\alpha}$=.95. Conclusion: The instrument has acceptable validity and a high degree of reliability. Staff in nursing homes can continuously improve and manage their services using the results of the evaluation instrument.