• 한국데이터정보과학회:학술대회논문집
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• 2001.10a
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• pp.25-33
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• 2001

This paper suggests a generalized logit model with mixed effects for analysing frequency data in multi-contingency table. In this model nominal response variable is assumed to be polychotomous. When some factors are fixed but condisered as ordinal and others are random, this paper shows how to use baseline-category logits to incoporate the mixed-effects of those factors into the model. A numerical algorithm was used to estimate model parameters by using marginal log-likelihood.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.38 no.6
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• pp.851-857
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• 2018

In this research, LCA analysis of the manufacturing process of pot bearing for fixed, movable in all directions, movable in one direction was carried out to analyze the environmental load using the LCA methodology. Especially, the water footprint that has been and issue in recent years was analyzed. As a result of LCA, it was analyzed that the contribution of the plate was more than 64.2% in all of the six impact categories in the case of fixed pot bearing base, and more than 94% in the category of resource depletion and photochemical oxidant creation. In the case of all direction pot bearing and one direction pot bearing, the contribution of PTFE was the highest in the global warming and stratospheric ozone depletion, and the contribution by the plate was higher in the other impact categories. The water footprint of each type of pot bearing was analyzed as $22.4m^3\;H_2O\;eq/kg$ for one direction pot bearing, $17.1m^3\;H_2O\;eq/kg$ for fixed pot bearing, and $14.1m^3\;H_2O\;eq/kg$ for all direction pot bearing. As a result of life cycle analysis, the contribution of water use in manufacturing was more than 65% in all three types. The results of this study can be used as basic data for decision making in construction method and material selection of bridges in the future.

• Journal of Animal Science and Technology
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• v.48 no.3
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• pp.337-344
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• 2006

The objective of this study was to compare of genetic parameter estimates on carcass traits of Hanwoo(Korean Cattle) according to modeling with Gibbs sampler and MTDFREML. The data set consisted of 1,941 cattle records with 23,058 animals in pedigree files at Hanwoo Improvement Center. The variance and covariance among carcass traits were estimated via Gibbs sampler and MTDFREML algorithms. The carcass traits considered in this study were longissimus dorsi area, backfat thickness, and marbling score. Genetic parameter estimates using Gibbs sampler and MTDFREML from single-trait analysis were similar with those from multiple-trait analysis. The estimated heritabilities using Gibbs sampler were .52～.54, .54 ～.59, and .42～.44 for carcass traits. The estimated heritabilities using MTDFREML were .41, .52～.53, and .31～.32 for carcass traits. The estimated genetic correlation using Gibbs sampler and MTDFREML of LDA between BF and MS were negatively correlated as .34～.36, .23～.37. Otherwise, genetic correlation between BF and MS was positive genetic correlation as .36～.44. The correlations of breeding value for marbling score between via MTDFREML and via Gibbs sampler were 0.989, 0.996 and 0.985 for LDA, BF and MS respectively.

• Korean Journal of Social Welfare Studies
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• no.37
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• pp.429-455
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• 2008

The purpose of this study is to generate a substantive theory that accounts for the social readaptation of the women who have engaged in prostitution and propose a practical program for them. We used the grounded theory developed by Strauss and Corbin(1990). Raw data were collected through the in-depth interview, documents and observation. We used constant comparative method for the data analysis. The nine women who had the exprience of prostitution have participated in this study. As a result of the data analysis, in open coding were generated 116 concepts, 29 subcategories and 12 categories, In axial coding the outcomes of a paradigm model were as follows. The causal conditions were named 'hostile environment' and 'the self endowed stigma'. The phenomenon turned out to be 'living as an anonymous being'. The contextual conditions were named 'cohesion of family', 'being pushed' and 'shrinked emotion'. The intervening conditions were presented to be 'desire of self restoration as a social being', 'reactionary reconstruction'. The action/interaction strategies turned out to be 'shifting of social status', 'neighbor alliance'. The consequences were presented to be 'psychological wayfarer' and 'tentacular living'. In selective coding we found a core category, 'repetition of leaving and returning from the life world'. Based on the phenomenon, two types of participants life attitudes were found as follows : present hesitating type, self concealing type. Following the adove results, We finally suggested the need to develope a community oriented case management model.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.555-558
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• 2000

소프트웨어 프로세스 능력 수준에 영향을 미치는 요인을 찾아내어, 강점은 격려하고 약점을 개선하는 프로세스 개선활동은 기업의 경쟁력 향상을 위하여 매우 중요한 일이다. 본 연구에서는 이러한 요인을 찾아내기 위하여 SPICE(ISO/IEC 15504) 프로젝트에서 국제적으로 실시된 소프트웨어 심사 결과를 이용하였다. 분석 요인으로 IT부서 사원수, ISO 9001 인증여부, 안정성, 경제적 손실도, 보안성, 환경 영향도를 사용하였으며, 본 자료가 범주형이므로 분석 방법으로 통계적인 방법론인 "수량화방법 II"를 이용하였다. 수량화방법 II에서는 요인의 중요도를 나타내는 지표로 범위와 편상관을 사용한다. "범위"를 지표로 할 경우, 보안성이 능력수준과 가장 높은 관련이 있는 것으로 나타났으며, "편상관"을 지표로 할 경우, ISO 9001 인증이 가장 관련이 높은 것으로 나타났다. 이는 보안성이 높게 요구되는 회사의 경우, 품질시스템이 잘 갖춰져 있고, ISO 9001 인증을 받는 둥의 품질관리를 하여 프로세스 능력수준 또한 높게 나왔다고 추론할 수 있다.

• Journal of Korean Library and Information Science Society
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• v.44 no.1
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• pp.177-199
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• 2013

Using a qualitative multimethod approach, this study was to construct a substantive theory about occupational socialization of librarians. Through theoretical sampling, 42 participants were in-depthly interviewed at three studies, i. e., phenomenological, ethnographic, and grounded theory approach. These data were analyzed and finally integrated using grounded theory approach. 'Acquiring Social Recognition as Information Professionals' was emerged the core category for describing and guiding the occupational socialization process. Six patterns were discovered: 'the Beliefs', 'the Seeking-Success', 'the Work-Obiligations', 'The Stucked', 'the Self-Pride', 'The Frustrated' Also, it discussed characteristics and socialization strategies of the pattern.

• The Korean Journal of Applied Statistics
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• v.35 no.2
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• pp.177-188
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• 2022

The support vector machine (SVM) has been successfully applied to various classification areas with a high level of classification accuracy. However, it is infeasible to use the SVM in analyzing massive data because of its significant computational problems. When analyzing imbalanced data with different class sizes, furthermore, the classification accuracy of SVM in minority class may drop significantly because its classifier could be biased toward the majority class. To overcome such a problem, we propose the DOC-SVM method, which uses divide-oversampling and conquers techniques. The proposed DOC-SVM divides the majority class into a few subsets and applies an oversampling technique to the minority class in order to produce the balanced subsets. And then the DOC-SVM obtains the final classifier by aggregating all SVM classifiers obtained from the balanced subsets. Simulation studies are presented to demonstrate the satisfactory performance of the proposed method.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.7
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• pp.192-199
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• 2018

This study was conducted to examine the nursing image types and characteristics of nurses perceived by nursing college students by applying the Q methodology and to manage effective nursing education and clinical education. The survey was conducted from May 15, 2017 to May 24, 2017, and the data collection for the Q population composition was based on in-depth interviews and literature review. First, nursing college students were searched for convenience and 158 statements were obtained based on open questionnaires and 64 statements extracted from in-depth interviews and after a literature review. To select the Q sample, Q population was categorized by taking several repeated readings. Five categories were developed from these processes: quality and role, social awareness, professionalism, uniqueness, and working conditions. The selected statements were reviewed and revised by experts and 35 Q samples were finally selected. Based on this, 46 students in one nursing college classified 35 Q statements, and analyzed data using PC QUANL program. The results of the study were as follows: 2) Type I-1: Job related anxiety, Type I-2: cold and professional, Type II-1: Complaint of treatment and Type II-2: Profession-Unacceptable. These results are expected to provide useful data for understanding the characteristics of nurses' images and provide data enabling development of image improvement strategies of nursing education and clinical education.

• Korean Journal of Social Welfare Studies
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• v.42 no.3
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• pp.85-119
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• 2011

This Study was to explore the experience of foster care child's biological parents and proposed the practical discuss and method for support their returning home. We approached grounded theory to subject. Twenty biological parent's of foster child participated this research. The Data were collected by in depth-interview and documents. The authors analyzed the data according to frame that proposed Strauss and Corbin(1998). The results as follows: In open coding 143 concepts, 34 subcategory, 13 category. In axial coding the causal conditions were 「self-devaluation」, 「self-stigma」, 「social prejudice」. and the phenomenon were 「life as surplus being」, 「revolving around the world」, and the contextual conditions were 「collapse of life base」, 「rustical fatalism」. The intervention conditions were 「operation of support system」, 「instinct of maternity」. The action/interception strategy were 「closing of single eye」, 「pussling of scattered piece」. The consequence were 「fixations of abandonment」. 「resoaring to the world」 The authors proposed the core category as 「go over the wall of world burdening liabilities of being」. The authors classified patricians life type as 「challenging type」, 「status quo type」, 「escaping type」, Finally, we proposed the practical method for support restoring family the world」, foster care child's biological parents.

• Journal of the Korean Chemical Society
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• v.56 no.3
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• pp.371-377
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• 2012

In this study, open inquiry reports of 165 eighth graders in Daegu were analyzed in terms of content area, the types of inquiry hypothesis, and the types of inquiry variables. Before summer vacation, students learned about inquiry process and explored their own inquiry topic for two class hours. During summer vacation, students performed open inquiry including problem selection, designing and performing experiment, data collection, data analysis, and writing report. After the vacation, students submitted their reports, and answered to additional survey regarding the source of inquiry idea, the definition of hypothesis, and the most difficult step of inquiry process. As a result, chemistry was the most dominant content area of the reports and biology and life science were the next. 130 out of 165 reports included inquiry hypotheses, and most of them were predictive hypotheses. In many reports, dependent and independent variables could not be identified because of their ambiguity. However, inquiry variables described in experimental design, which were mostly categorical variables, were clearer than those described in inquiry subject and inquiry hypothesis. The most difficult step of inquiry process for students was to generate an idea for open inquiry.