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        • 대인신뢰성향 요인의 확인을 위한 추시 연구

          이진환 부산대학교 학생생활연구소 2002 硏究報 Vol.34 No.-

          The purpose of this study was following up to identify the items which could measure individuals' Interpersonal Disposition for Trust, using modified Interpersonal Trust Scale. Subjects were 1,416 undergraduate students of 2002 PNU Freshmen(634) and Freshwomen(782). The result of Factor Analysis(Principal Factor Analysis, Varimax Rotation) and Regression Analysis indicated 9 items could be used as subscale measuring Interpersonal Disposition for Trust. This was the same results as ones of Lee(2002)'s previous s셔요. Factor Analysis(Principal Factor Analysis with the number of factor 2, Varimax rotation) indicated on factor was positive statements factor and the other factor was negative statements one. Four factors were extracted by Factor Analysis(Principal Factor Analysis with the numer of factor 4, Varimax rotation). First factor was Evaluation of Reliability of various people(8 positive statements), Second factor was Interpersonal Disposition for Trust(5 negative statements), Third factor was Evaluation of Reliability of various people(4 negative statements), and Fourth factor was Interpersonal for Trust(4 positive statements). Regression Analysis(with stepwise method) indicated only the Second and the Fourth Factors explained Anxiety, and Stress. And Regression Analysis(with stepwise method) indicated the Second, the Fourth, and First factors explained Depression. Items of Second and Fourth factors were combined and were assumed representing Interpersonal Disposition for Trust. Items of First and Third factors were combined and were assumed representing Evaluation of Reliability of various people. Regression Analysis(with stepwise method) indicated only the Interpersonal Disposition for Trust factor explained Anxiety and Stress. Another Regression Analysis(with stepwise method) indicated Depression could be explained by the Interpersonal Disposition for Trust factor and Evaluation fo Reliability of various people. This result was different from the one of Lee(2002)'s study, in which Stress could be explained by the Interpersonal Disposition for trust factor and Evaluation of Reliability of various people. It was dicussed that Disposition for Interpersonal Trust could be formed and developed through objects' reliability exprienced by individuals and/or individuals' attribution pattern(e.g., internal vs external locus of control). And whether the courses of development of Disposition for Interpersonal Trust would be individuals' overgeneralization of their everyday experiences to contact various people, or vagueness of causal attribution was not clear. Thus it would be necessary to investigate these problems further.

        • KCI등재후보

          6-시그마 기법을 이용한 고속자동피치가변장치 메커니즘 설계

          이진환,원윤재,이혁,Lee, Jin-Hwan,Won, Yun-Jae,Lee, Hyuk 한국반도체디스플레이기술학회 2008 반도체디스플레이기술학회지 Vol.7 No.4

          A high speed automated pitch variation unit (HAPU) related to semiconductor category sorting movement of the test handler system was developed. In the design process, 'DMADOV' step of 6-Sigma method has been applied. The design result for the desirable pitch variation was a 3:1 reduction rack-pinion and a linkage which are operated by servomotors. The realization and reliability of the mechanism was obtained at the design stage by FEM analysis, and by robust design using Taguchi orthogonal array against weight and deformation. Finally, the validity of the high speed variation mechanism was confirmed via inspection using a high speed camera while performing pitch variation.

        • 鏡湖의 富營養化에 관한 硏究

          李晋煥 상명대학교 기초과학연구소 1988 기초과학연구 Vol.2 No.-

          The present study are not only to scrutinize eutrophication due to environmental stresses but also to clarify the phytoplankton community in the Kyung Lake. Firstly, eutrophication for this Lake have been studied from the surface layer at five stations during the periods from April to August 1987. Nitrate and phosphate concentrations were exceeded the standard value of eutrophication, respectively. Chlorophyll - a concentration and phytoplankton standing crops have increased more than the standard value of eutrophication and its showed hypereutrophication conditions. Municipal and industrial wastewaters are released into this Lake, and many emergent and submerged anchored hydrophytes decay after growth become the or ganic pollutions. It could be thought that eutrophication of this Lake caused by the above mentioned reasons.

        • KCI등재

          Nitrosomonadales 목의 핵심유전체(core genome)와 범유전체(pan-genome)의 비교유전체학적 연구

          이진환,김경호,Lee, Jinhwan,Kim, Kyoung-Ho 한국미생물학회 2015 미생물학회지 Vol.51 No.4

          Nitrosomonadales 목에서 속하는 균주 중 현재 유전체 서열이 알려진 모든 유전체(N=10)를 이용하여 범유전체 및 핵심유전체 분석을 수행한 결과, 각각 9,808개와 908개 유전자클러스터를 포함하는 것을 확인하였다. Betaproteobacteria의 다른 목의 참조군들과 비교를 통하여 범유전체와 핵심유전체의 크기에 유전체의 수와 집단 내의 유전체들의 차이가 영향을 미치는 것을 확인하였다. Nitrosomonas 속과 Nitrosospira 속의 범유전체는 7,180개와 4,586개, 핵심유전체는 1,092개와 1,600로로 각각 측정되어 Nitrosospira 속의 동질성이 더 높은 것을 확인하였다. Nitrosomonadales 목의 범유전체와 핵심유전체의 크기에 Nitrosomonas 속이 대부분의 영향을 미치는 것을 확인하였다. COG 분석을 통하여 핵심유전체의 크기에는 J (translation, ribosomal structure and biogenesis) 범주가 가장 큰 비율(9.7-21.0%)을 차지하며, 유전체 사이의 유전적 거리가 먼 집단일수록 그 비율이 높아지는 것을 확인하였다. 범유전체의 크기에는 "-" (unclassified) 범주가 34-51%의 높은 비율을 차지하고 있을 정도로 큰 영향을 미치는 것을 확인하였다. 총 97개의 유전자 클러스터가 참조군에는 없고 Nitrosomonadales에만 존재하는 것을 확인하였다. 이들 클러스터들은 Nitrosomonadales을 특징 지우는 유전자들인 ammonia monooxygenase의 유전자인 amoA와 amoB와 그와 관련 있는 amoE와 amoD들을 포함하는 반면에 unclassified 유전자들도 상당량(16-45%)을 포함하고 있다. 이러한 유전자 클러스터는 Nitrosomonadales의 유전적 특이성을 밝히는 데 중요한 역할을 할 것이다. All known genomes (N=10) in the order Nitrosomonadales were analyzed to contain 9,808 and 908 gene clusters in their pan-genome and core genome, respectively. Analyses with reference genomes belonging to other orders in Betaproteobacteria revealed that sizes of pan-genome and core genome were dependent on the number of genomes compared and the differences of genomes within a group. The sizes of pan-genomes of the genera Nitrosomonas and Nitrosospira were 7,180 and 4,586 and core genomes, 1,092 and 1,600, respectively, which implied that similarity of genomes in Nitrosospira were higher than Nitrosomonas. The genomes of Nitrosomonas contributed mostly to the size of the pan-genome and core genomes of Nitrosomonadales. COG analysis of gene clusters showed that the J (translation, ribosomal structure and biogenesis) category occupied the biggest proportions (9.7-21.0%) among COG categories in core genomes and its proportion increased in the group which genetic distances among members were high. The unclassified category (-) occupied very high proportions (34-51%) in pan-genomes. Ninety seven gene clusters existed only in Nitrosomonadales and not in reference genomes. The gene clusters contained ammonia monooxygenase (amoA and amoB) and -related genes (amoE and amoD) which were typical genes characterizing the order Nitrosomonadales while they contained significant amount (16-45%) of unclassified genes. Thus, these exclusively-conserved gene clusters might play an important role to reveal genetic specificity of the order Nitrosomonadales.

        • KCI등재

          법정지상권에 대한 직무별 의식성향에 관한 실증연구

          이진환,엄수원 한국지역경제학회 2014 韓國地域經濟硏究 Vol.29 No.-

          법정지상권에 관한 논의는 학계와 법률전문가를 중심으로 주로 이루어져 왔는데, 법정지상권에 관한 실무를 담당하는 법원공무원이나 공인중개사 등이 법정지상권에 관한 이러한 논의를 인지 혹은 공유하고 있는가에 대해서는 의문이다. 이러한 맥락에서 본 논문은 법정지상권 업무 관련자들을 대상으로 직무에 따른 법정지상권에 관한 인식정도를 분석하여 의식에 대한 성향을 파악하는데 목적이 있다. 이를 위하여 우선 법정지상권의 성립요건, 내용, 소멸 등에 대한 이론을 판례를 중심으로 고찰한 후, 이를 토대로 분석변수를 선정하여 법정지상권에 대한 설문조사를 수행하였다. 분석방법은 기술통계분석, 요인분석, 신뢰성분석, K-평균 군집분석을 통해 이들의 법정지상권에 관한 인식 정도를 유형화하였으며 유형별 교차분석을 통해 성향의 상대적 차이를 도출하고자 하였다. Controversy over statutory superficies has been raised mainly by the academia and legal specialists. But it is unclear whether department of justice employees or real estate agents who carry out work related to statutory superficies are, in fact, aware of such controversy. In this light, this study aims to analyze the degree of awareness of statutory superficies among government employees and real estate agents who carry out related work as well as assess the tendencies based on the field of work. To this end, precedents were reviewed for defining the requirements, contents and loss of statutory superficies. Based on the reviewed data, variables were selected and a survey on the awareness of statutory superficies was conducted. Descriptive statistics, factor analysis, reliability analysis, and K-means clustering were statistical methods used to categorize awareness of statutory superficies. Cross tabulation was performed per category to assess the relative difference in tendencies.

        • 學科에 대한 知覺과 學科選擇의 關係

          李鎭煥 부산대학교 학생생활연구소 1981 硏究報 Vol.17 No.1

          In this survey research the possibility that how to perceive college departments might have effects on the choice of them was explored. Data were collected from 84 freshmen(49 male, 35 female), but 5 cases which failed to respond to a few items were excluded. Meaning of college departments was measured on the 7-point semantic differential scale which consisted of 12 pairs of adjective. The percepts and impression of college departments were measured through 12 items. And free-association was also used. Major findings were as follows: (1) Among the meaning dimensions-Evaluation, Potency, Activity-Potency Dimension had effect on the choice of college departments. (2) Popularity of college departments might have effect on the choice of them. (3) Family pressure might be a factor in the choice of college departments. (4) College department which was thought to contribute to our society was more favored. (5) Student's knowledge of college departments was found as superficial by the analysis of their free-asscciation contents. (6) There was a tendency to pragmatism to academism.

        • 대인신뢰성향 요인의 탐색 연구

          이진환 부산대학교 학생생활연구소 2002 硏究報 Vol.34 No.-

          The purpose of this study was to identify the items which could measure individuals' Interpersonal Disposition for Trust, using modified Interpersonal Trust Scale. Subjects were 1,270 undergraduate students of 2001 PNU Freshmen(450) and Freshwomen(820). The result of Factor Analysis(Principal Factor Analysis, Varimax Rotation) and Regression Analysis indicated 9 items could be used as subscale measuring Interpersonal Disposition for Trust. Factor Analysis(Principal Factor Analysis with the number of factor 2, Varimax rotation) indicated one factor was positive statements factor and the other factor was negative statements one. Four factors were extracted by Factor Analysis(Principal Factor Analysis with the number of factor 4, Varimax rotation). First factor was Evaluation of Reliability of various people(8 positive statements), Second factor was Interpersonal Disposition for Trust(5 negative statements), Third factor was Evaluation of Reliability of various people(4 negative statements), and Fourth factor was Interpersonal Disposition for Trust(4 positive statements). Regression Analysis(with stepwise method) indicated only the Second and the Fourth Factors explained Anxiety, and Depression. And Regression Analysis(with stepwise method) indicated the Second, the Fourth, and First Factors explained Stress. Items of Second and Fourth factors were combined and were assumed representing Interpersonal Disposition for Trust. Items of First and Third factors were combined and were assumed representing Evaluation of Reliability of various people. Regression Analysis(with stepwise method) indicated only the Interpersonal Disposition for Trust factor explained Anxiety and Depression. Another Regression Analysis(with stepwise method) indicated Stress could be explained by the Interpersonal Disposition for Trust factor and Evaluation of Reliability of various people.

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