• 한국시스템다이내믹스연구
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• 제16권4호
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• pp.103-128
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• 2015

This study investigated dynamic causal relationship between CSR implementation and consumption of environmentally friendly fashion products through systems thinking. Based on literature review and empirical research, we drew causal loop diagram for CSR implementation in environmentally friendly fashion product industry. By analyzing feedback loops, we found that companies and consumers interact in the process of CSR activities. In the process of CSR implementation, companies and consumers are closely related and affect each other as stimuli and prior condition. This study suggests that companies adopt push strategy to actively create demand by developing and promoting environmentally friendly fashion products and that companies communicate with consumers in order to be recognized and rewarded by consumers for their CSR activities. In addition, this study suggests that consumers not only support companies of CSR activities but also actively boycott anti-environmental companies by collective action.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제14권1호
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• pp.1-7
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• 2014

This paper presents a novel method for simultaneously and automatically choosing the nonlinear structures of regressors or discriminant functions, as well as the number of terms to include in a rule-based regression model or pattern classifier. Variables are first partitioned into subsets each of which has a linguistic term (called a causal condition) associated with it; fuzzy sets are used to model the terms. Candidate interconnections (causal combinations) of either a term or its complement are formed, where the connecting word is AND which is modeled using the minimum operation. The data establishes which of the candidate causal combinations survive. A novel theoretical result leads to an exponential speedup in establishing this.

• 지식경영연구
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• 제10권2호
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• pp.49-63
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• 2009

In this study, sub domain of flow was investigated on literature survey, and suggested of the measuring method of web-site flow and its simulation analysis. Constructing of measuring method of flow, and using this method what-if analysis was simulated when several condition changed. Using causal map approach to extract knowledge from web-site domain experts and to derives a causal relationship of knowledge. Specially, in our study, describes method of developing and building causal map, and suggests guide line of this method on practical application. This research results show that web-site flow starts "direct searching" or "interesting of special issue(domain)", and when challenges of web-site were accorded with user's skills web-site flow grows. Further, in the web-site, information searching intention results in increase of user's duration time and experience flow to discovery new interesting issues in this process. If user's web-site of interaction is increased, awareness of environment conditions decreased, finally, user's telepresense results in increased web-site flow. This paper contained thai this method make used of measuring flow in the web-site and developing of practical strategy.

• 한국언론정보학보
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• 제81권
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• pp.299-328
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• 2017

본 연구는 소셜미디어에서의 뉴스 정보 수용을 기존의 전통적인 신문기사 형식의 뉴스 읽기와 비교 분석했다. 전통적인 신문기사 읽기 조건과 비교할 때 소셜미디어를 통한 뉴스 전달은 대화저널리즘 양식으로 이뤄진다고 보았으며 이러한 양식의 차이가 뉴스 정보의 기억과 구성에 어떤 차이를 만들어내는지를 유사실험을 통해 관찰했다. 실험에서는 동일한 내용의 가상의 기사를 전통적인 신문기사 형식과 소셜미디어의 대화체 이야기 정보 방식으로 제작해 신문기사 조건과 소셜미디어 조건에 활용했다. 뉴스의 이해 정도를 정보 기억(전체 내용 기억, 주요 내용 기억, 내용을 틀리게 기억한 정도, 부가적인 정보의 기억, 사실 정보 획득)과 구성(인과관계 기억)의 두 가지 측면에서 관찰했다. 분석결과, 신문기사 조건은 소셜미디어 조건보다 정보 기억에서 더 뛰어났다. 전체 내용의 기억 정도, 주요 내용을 기억한 정도, 부가적인 정보를 기억한 정도, 사실 정보 획득 등에서 신문기사 조건이 우세했으며, 내용을 틀리게 기억한 정도는 소셜미디어 조건이 더 높은 것으로 나타났다. 인과관계 기억의 경우, 일반적 인과관계를 기억하는 정도는 소셜미디어 조건이 더 뛰어났지만 해당 기사에 특정한 인과관계를 기억하는 정도는 신문기사 조건이 소셜미디어 조건보다 유의미하게 더 높은 것으로 나타났다. 이러한 연구결과는 전통적인 신문기사 형식이 뉴스 내용을 이해하는 데 도움이 됨을 시사하고 있다.

• 응용통계연구
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• 제29권5호
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• pp.849-858
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• 2016

관측 자료를 이용한 인과연구에서 관심 있는 처리변수의 효과가 다른 공변량의 효과와 중첩되지 않도록 조건화할 공변량을 선택하는 것이 중요하다. 인과연구에서의 공변량선택 문제는 공분산분석 모형에서의 변수선택 문제와 다르다는 것을 예를 들어 설명하였다. 그리고 모든 변수들 사이의 인과관계를 파악하지 않고도 적용할 수 있는 실용적인 공변량선택기준에 대해 살펴보았다. VanderWeele과 Shpitser (2011)가 새로운 기준을 제안하면서 새로운 기준이 다른 두 기준보다 나은 성능을 보인다고 주장하였는데, 이 기준에도 한계와 단점이 있음을 예증하였다. 새로운 기준이 완전한 기준은 아니지만 조건을 조금 수정하면 다른 두 기준과 달리 중첩을 제거할 수 있다는 점에서 좀 더 나은 기준이라고 할 수 있다.

• 한국잠사곤충학회지
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• 제40권2호
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• pp.117-125
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• 1998

Entomopathogenic nematodes, Heterorhabditidae and Steinernematidae, were isolated from the soil of mulberry field, and the high infectivity and invesiveness were confirmed in the silkworm, Bombyx mori. The cause of non-microbial and acute flacherie was found as an disease by infection with soil-born nematodes through the mulberry leaves contaminated with soil and rainwater. The causal nematodes were isolated by silkworm trap from all of the 5 soil samples collected on the 5 mulberry fields, and identified as 3 strains of Heterorhabditis sp. and 2 of Steinernema sp. Rainwater itself, however, wasn't engaged in the silkworm disease, mulberry leaves with rainwater was rather profitable for cocoon production when the leaf quality was too hard to feed silkworm. Feeding of wet mulberry leaves with rain might not so harm to silkworm when the condition of rearing room to be kept at suitable temperature and ventilated well. Nematode infection of silkworm could be occurred by harvesting and feeding of contaminated mulberry leaves on the weather condition of rainy and wind. For the prevention of nematode infection, silkworms should be fed the leaves harvested from the higher portion of the mulberry tree in rainy days. For an oppositional application of this susceptibility of silkworms to nematode, might be useful on the collection and amplification of nematode agents for biotic control of pest insects.

• 응용통계연구
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• 제22권1호
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• pp.17-28
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• 2009

본 연구에서는 한미간 경기동향의 선행성을 주가와 경기간 선행성과 연계시켜 검정해 보았다. 이들의 선후행관계는 외환위기 이후 선명히 식별되며, 이때의 벡터자기회귀모형은 국내외 시장변수들간 연관성이 강화되고 국내경제의 대미의존도가 높아진 현실을 그대로 반영한다. 추정결과는 주가의 경기 선행성과 미국경기의 국내경기 선행성이라는 그간의 통설을 통계적으로 입증하고 있다.

• 식물병연구
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• 제6권1호
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• pp.15-18
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• 2000

1998년 대전의 비닐하우스에서 재배중인 칼란코에의 잎에 세균병이발생하였다. 이들 병반은 수침상 병반이 나타나고 병반진전과 함께 무름증상을 보였다. 이들로부터 분리한 병원세균을 침접종한 결과 자연병징과 같은 병반을 형성하였다. 병원세균의 세균학적 특성을 조사한 결과 E. herhicola로 동정되었다. 국내에서는 아직 칼란코에 (Kalanchoe blossfeldiana)의 병원세균으로 E. herbicola가 보고되지 않았다. 따라서 이를 E. herbicola에 의한 \"칼란코에의 세균성 무름병\"으로 명명할 것을 제안한다.할 것을 제안한다.

• 한국조경학회지
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• 제30권6호
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• pp.79-97
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• 2003

The purpose of this paper is to analyze a causal model determining social carrying capacity(SCC) in natural parks, to answer the research question: What is the mechanism for determining SCC in natural parks (NP)\ulcorner After reviewing the literature on SCC and recreation activities in Korean natural parks, we constructed a conceptual framework and formulated the hypothesis of this research. We obtained data through a questionnaire which surveyed 487 visitors at 6 of the 73 NP in Korea during 2001, based on a stratified sampling method. We analyzed the data using descriptive statistical methods, the mean difference test, Pearson's correlation analysis, and path analysis method. We found that 1) The direct effect of resources, activity space(AS), visitor's expectation(VE), encounter, crowding, damage of resources(DR), maintenance condition of resources and facility(MCRF) to SCC are 3.45, 3.62, 2.75, 2.72, 1.32, and 4.77 times more important than that of crowding, respectively, while the indirect effect of resources, AS, VE, encounter, and DR to SCC is 13.03, 11.19, 3.34, 1.3, 2.05, 1.10, 0.05 and 2.30 times more important then that of crowding, respectively, 2) Causal effects of resources, facility, AS, VE, number of visitors(NV), encounter, crowding, VM, DR, and MCRF to SCC turned out to have 0.3523, 0.3321, 0.1751, 0.1465, 0.0307, 0.0762, 0.0604, -0.0510, -0.1177 and 0.2165, respectively, and 3) The causal effect of activity base(AB) and activity atmosphere(AA) to SCC turned out to have 2.57 and 1.1 times higher than that of MCRF, respectively. The research results suggest that 1) this conceptual framework is highly useful for the development of substantive theory and methodology; 2) management issues of AA and MCRF turned out to have 0.81 times in SCC that of AB, i.e, SCC can be significantly improved from control of AA and MCRF; and 3) supply of excellent resources and convenient facilities is needed to increase social carrying capacity. It is recommended that more empirical studies be performed in the future according to the season, visitor characteristics, and AS by NP.

• 대한안전경영과학회지
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• 제17권2호
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• pp.215-228
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• 2015

A creative innovation and an innovative problem-solving of industrial companies can be achieved by overcoming the challenges of technical and physical contradictions. The approaches to address conflicting and paradoxical problems, such as technical and physical contradictions have a crucial role in advancing the quality assessment for manufacturer and service provider. The term, technical contradiction, depicts the state that improvement of one ends of IFR (Ideal Final Result) leads to unfavorable condition of the other ends, and results in conflicting problem. Another type of contradictions that's discussed in this study is a physical contradiction which is due to two mutually opposing states of the means of ends, and gives paradoxical situation. By integrating the means-ends chain perspectives, the physical contradiction that is a specifically root-causes, "means", can be initially addressed to resolve the downstream problem of technical contradiction which represents a general and abstract goals, "ends". This research suggests IFR resolution processes to handle both physical contradiction of means and technical contradiction of ends by employing causal relationship with IFR, effects and causes. In summary, the study represents three major processes that resolve such contradictions are demonstrated as follows: 1) Derivation of causal and hierarchical relationship among IFR, ends and means by considering CAED (Cause-And-Effect Diagram) and LT (Logic Tree). 2) Identification of causal relationship between physical contradiction and technical contradiction by using TPCT (TRIZ Physical Contradiction Tree) and TCD (Technical Contradiction Diagram). 3) Application of integrated TRIZ principles by classifying 40 inventive principles into 4 general conditions of the separation principle of mutually opposite states in space, in time, based on conditions, and between the parts and the whole. In order to validate the proof of proposed IFR resolution processes, the analysis of the TRIZ case studies from National Quality Circle Contest in the years, 2011 to 2014 have been proposed. The suggested guidelines that are built based on TRIZ principles can uniquely enhance the process of quality innovation and assessment for quality practitioners.