• 한국진공학회:학술대회논문집
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• 한국진공학회 2012년도 제42회 동계 정기 학술대회 초록집
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• pp.529-529
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• 2012

Dispersion of carbon nanotubes in biocompatible media are of particular interest for diverse biomedical and nanomedicine applications. Various biomolecules and biopolymers such as DNA, proteins, poly L-lysine, starch, gelatin, steroid biosurfactants, and chitosan have shown capability for the effective dispersion of carbon nanotubes in water. Chitosan has demonstrated capacity for effective dispersion of single-walled carbon nanotubes (SWCNTs) in acidic medium and it also showed tendency to preferentially disperse smaller diameter nanotubes. Chemical functionalizations of chitosan enable its solubility in neutral pH water by reducing the intra and inter molecular hydrogen bonding. Herein, we present a neutral pH water soluble chitosan derivative, chitosan-hydroxyphenyl acetamide (CHPA), obtained by functionalizing the amino groups of chitosan with 4-hydroxyphenyl acetic acid, as an efficient biocompatible dispersant for debundling and solubilization of SWNTs in neutral aqueous solutions. Various process conditions for individual dispersion of SWCNTs are analyzed based on optical absorption and Raman spectroscopy.

• 한국IT서비스학회지
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• 제12권2호
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• pp.55-71
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• 2013

Despite the growing interest in technostress phenomenon of employees in organizations, few guidelines exist about how mangers can effectively control their technostress. Accordingly, scholars should pay greater attention to how firms can successfully manage employees' technostress. This study conceptually developed and tested a research model for understanding the influence of technostress on psychological and behavioral strains. In addition, we tested technical support provision as a moderator. We obtained 107 samples through a survey questionnaire, and data were analyzed based on structural equation modeling (SEM). As a result, it was empirically demonstrated technostress decreases job satisfaction and individual productivity. We also found that technical support provision have moderating effects on the relationship of technostress and job satisfaction/individual productivity.

• 한국멀티미디어학회논문지
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• 제18권1호
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• pp.1-8
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• 2015

In recent years, ear has emerged as a new biometric trait, because it has advantage of higher user acceptance than fingerprint and can be captured at remote distance in an indoor or outdoor environment. This paper proposes an individual identification method using ear region based on SIFT(shift invariant feature transform). Unlike most of the previous studies using rectangle shape for extracting a region of interest(ROI), this study sets an ROI as a flexible expanded region including ear. It also presents an effective extraction and matching method for SIFT keypoints. Experiments for evaluating the performance of the proposed method were performed on IITD public database. It showed correct identification rate of 98.89%, and it showed 98.44% with a deformed dataset of 20% occlusion. These results show that the proposed method is effective in ear recognition and robust to occlusion.

• 한국사회복지학
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• 제43권
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• pp.193-221
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• 2000

The conventional framework of welfare politics, based on class concepts, tends to fail in explaining the recent social changes. Theoretical response from the social science diverges into two blocs. One is the postmodernist approach that denies possibility of structural cleavage; the other is the alternative trial that seeks to find various kinds of cleavages. The former approach is to be rejected because there is few empirical supports for it. The latter is too sparse to be applied to the studies of welfare politics that requires a comprehensive analysis. This study starts from critical investigation of such approaches, aiming at providing a theoretical framework that combines merits of existing studies on welfare politics. The theoretical framework of three statuses of welfare rights and duties, which is to be presented as an alternative to the conventional class counterpart, does not only underscore the expansion of welfare rights but also the burden of welfare duties. Hence, it can comprehensively subsume complex existence of interest cleavages of welfare politics. To make a long story short, individual interest, related to the welfare state, will effect individual attitudes toward the welfare state and their ways of political support.

• 한국콘텐츠학회논문지
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• 제4권4호
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• pp.79-87
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• 2004

본 연구에서는 인물영상에서 입술영역을 검출하기 위한 확률맵 기반 유전자 알고리즘을 제안한다. 하나의 최적해 탐색에 사용되었던 기존 유전자 알고리즘을 수정하여 입술과 같은 영역 검출에 부합하는 다수의 해를 얻도록 적용한다. 이를 위해 공간좌표를 의미하는 염색체로 각 개체를 표현하고, 보존구간, 세대수에 따른 부분 균일교배, 비중복 선택 등의 유전연산 방법을 도입한다. 또한 HSV 칼라공간에서 HS성분에 대한 확률맵을 제안하고, 이를 적용함으로써 유전자 알고리즘의 속성인 유사 색상에 대한 적응성을 더욱 증대한다. 실험을 통하여 제안 알고리즘의 성능을 좌우하는 주요 파라미터를 분석하였으며, 입술이외의 다른ROI(Region Of Interest)의 검출에도 유연하게 적응할 수 있음을 관찰하였다.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 1999년도 추계학술발표대회 논문집
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• pp.73-76
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• 1999

Near infrared spectroscopy techniques were used to study the cure reactions of epoxy resin system based on diglycidyl ether of bisphenol A(DGEBA) resins cured with 4, 4' diaminodiphenyl sulfone (DDS) hardner. Stoichiometric DGEBA/DDS resin formulation was involved in this study. The infrared absorption spectra of the prepared formulation were obtained on an FTIR spectrometer operating in the region of 11000 to 4000$cm^{-l}$. The chemical group peaks of interest in a DFEBA/DDS spectrum were identified by a comparative study with individual spectra of DGEBA and DDS monomers. Where necessary, special model compounds were used to identify unknown bands, such as the primary amine band at 4535$cm^{-l}$. The absorption bands of interest were integrated to quantify the areas and then converted to molar concentrations. This series of quantitative analyses of the major chemical groups led us to understand not only the reaction mechanism but also the cure kinetics. In this paper, the reaction mechanisms observed in stoichiometric DGEBA/DDS resin formulation and the various properties of the resin system as a function of cure temperature are described.

• 영어어문교육
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• 제3호
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• pp.13-42
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• 1997

The purpose that the curriculum appropriate for the student's level pursues is to offer to a student the curriculum that can satisfy the student's interest, aptitude, and requirements. This curriculum has recently enforced all over the country, but the careful research and the plan for verification on its effect are required so that it may accomplish its purpose. This study, centered on the reading comprehension ability of Freshman English of the High School, aims to suggest a more desirable procedure for organizing and enforcing the curriculum appropriate for the students' level. In order to provide the best curriculum appropriate for the student's level. (1) the diagnosis of the individual student's level should be made first ; (2) the syllabus focused both on the grammar and on the communicative functions should be prepared ; (3) the teaching material on the basis of the syllabus should be selected considering the student's interest. and requirements. The new method of teaching-learning English should also be developed with the enforcement of the new curriculum discussed here. The curriculum appropriate for the student's level has many kinds of problems but these disadvantages should be overcome for providing the better educational system for the individual student.

• 정보교육학회논문지
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• 제6권1호
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• pp.110-116
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• 2002

본 논문에서는 기존의 사이버 학습이 모든 학습자에게 동일한 교육 과정을 제시함으로써 제한된 교육효과를 가지는 단점을 개선하고자, 마케팅 전략의 하나인 CRM을 WBI에 접목시켜 개별 학습자에게 적합한 학습 방향을 제시하는 새로운 알고리즘을 제안하고, 제안된 알고리즘을 적용한 가상 영어 교육 시스템을 구축하였다. 본 논문에서 제안한 CRM 알고리즘은 학습자의 학습 과정에서 나타난 학습자의 흥미성향을 알고리즘에 내장된 방식에 의해 분석하여 학습 분야별 흥미보유 정도로 서열화하고 이를 사이버 학습에 활용할 수 있도록 하였다. 여기서 제시하는 학습자별 흥미에 기초한 학습 과정 설정방법은 학습자의 학습흥미를 더욱 높일 수 있는 사이버 교육 대안 중 하나가 될 수 있을 것으로 기대된다.

• 한국초등과학교육학회지:초등과학교육
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• 제21권1호
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• pp.135-142
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• 2002

This paper aims to compare the effects of two teaching methods, the discovery-observational(DO) and the expository-observational(EO) instructions, on students learning interest in the life cycle of fruit fly. The subjects, 463 third-graders from two elementary schools in Changwon City, were divided into two groups, the DO group and the EO group. After the instruction on the life of the flies in two different teaching ways, a questionnaire with 13 items was devised regarding the students' interest, and the subjects were asked to respond to it. The results reveal that the general mean score of the DO group is higher than that of the EO group. Also, the DO group obtains the higher mean score in each item, except two items about knowledge learning. The differences of the mean scores of the two types, general as well as item-individual, between the two groups are statistically significant. This suggests that the class about the life cycle of living creatures easily getatable and observable, such as fruit flies, should be student-centered investigatory one, where students themselves collect them and observe the process of their growth and whole cycle.

• 한국콘텐츠학회논문지
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• 제17권1호
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• pp.145-156
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• 2017

기업의 문화예술 지원활동을 지칭하는 메세나(mecenat)는 고객, 이해관계자, 지역사회와 더불어 기업문화 강화는 물론 사회공헌과 문화마케팅 도구로 활용되면서 단순 예술후원이나 협찬의 개념을 넘어 기업 경영의 다양한 활동에 영향력을 행사할 수 있는 전략적 도구로 자리잡고 있다. 이에 본 연구는 기업 내 조직원들에게 미치는 조직의 메세나 관심 및 조직원 참여의 영향관계를 파악하기 위해 국내 기업 임직원 438명을 대상으로 조직과 개인의 메세나에 대한 관심도가 조직원들의 메세나 활동 참여도를 통해 조직 신뢰, 애착, 충성도에 어떤 영향을 미치는지 실증 분석하고자 했다. 결과적으로 메세나에 대한 조직의 관심이 높을수록 조직원 개인의 메세나 관심도에 긍정적 영향을 미쳤다. 또한 관심도가 높은 직원의 메세나 참여도가 높았으며, 결국 조직 신뢰와 애착, 충성도에 긍정적 영향을 미치는 것으로 확인되었다. 이같은 분석결과는 기업의 메세나 활동이 조직문화 강화에 효과적이며, 단순히 기부나 후원활동이 아니라 내부 조직원의 관심과 참여와 함께하는 능동적인 활동으로 발전할 수 있음을 시사한다.