• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2011.03a
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• pp.108-108
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• 2011

PLA 즉 폴리유산섬유는 옥수수를 발효하여 글루코오스(포도당)상태를 만든 후 젖산(유산, Lactic acid)으로 만들고 이것을 탈수, 축합반응시켜 polylactic acid로 만든 것이다. 생분해성이 있으므로 저탄소, 녹색성장의 모토를 대변하는 소재라는 이점이 있다. 구조는 에스테르기의 반복단위를 가지는 소수성 섬유로 벤젠환은 없으나 그 외 구조는 폴리에스테르와 비슷하며, 에스테르기가 존재하므로 분산염료와 수소결합하여 염착된다. 그러나 PLA는 융점이 $170^{\circ}C$, Tg $57^{\circ}C$로 내열성이 낮아서 염색온도, 열처리온도, 다림질에 제약이 있으며, 알칼리에 약한 단점이 있다. 따라서 PLA섬유는 낮은 염착량, 내알칼리성, 염착온도 때문에 염색 및 후가공 단계에 많은 사전 실험을 통한 조건 설정이 필요한 까다로운 섬유이다. 본 연구에서는 (주)휴비스의 PLA원사로 제직한 직물(경사:DTY 75/72SD, 위사:DTY 100/72SD, 조직:DOBBY) 생지에 대하여 열처리 시 장력의 유무, 온도, 시간에 따른 폭의 변화를 측정하여 수축률을 알아보았다. 또한, PLA직물을 온도별로 정련한 후 열처리하여 인열강도 측정을 통해 최적 전처리 조건을 조사하였다. 실험결과, PLA생지를 무장력 상태에서 열처리 시 수축이 심하게 일어나고, 장력이 주어져도 열처리 온도에 따라 수축의 정도에 차이가 나타났다. 열처리 시간은 30, 60, 90, 120초로 주었으나 큰 편차는 없었고, 경사가 위사보다 수축 정도가 더 컸으며, $130^{\circ}C$에서는 전체적으로 수축이 심하였다. 생지의 정련에는 인산에스테르계 정련제와 약알칼리인 탄산나트륨으로 조액하여 60, 70, 80, $90^{\circ}C$에서 10분간 처리한 후, Lab. tenter(Mathis, LTE)를 이용하여 110, 120, $130^{\circ}C$에서 30, 60, 90, 120초간 열처리한 다음, KS K 0535 펜듈럼법에 의거하여 인열강도를 측정하였다. 그 결과, 상기 정련온도에서는 인열강도에 영향을 주지 않았으나, 열처리 온도가 $130^{\circ}C$일 때 현저한 강도의 저하를 나타내었다. 실험조건 하에서 가장 적절한 열처리 조건은 $110^{\circ}C$, 60초로 사료된다. 따라서 PLA의 약한 내열성과 내알칼리성 실험결과, 강도나 수축 등 물성변화가 일어나지 않도록 열처리 온도의 제어에 주의가 필요함을 확인할 수 있었다. 실제 섬유가공 작업현장에서는 일반적으로 열처리기가 $180^{\circ}C$이상의 고온으로 고정된 경우가 많은데, 작업자들에게 PLA소재에 대한 사전주의 및 공정변경에 대한 주지가 요구된다.

• Journal of The Korean Association For Science Education
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• v.29 no.4
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• pp.414-422
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• 2009

In this study, we investigated the influences of students' motivational characteristics on the processes of learning density concept using a discrepant event. The participants were 642 seventh graders from two middle schools. Tests of failure tolerance, self-efficacy and mastery/performance goal orientation were administered as pretests. A preconception test was also administered. The intervention was the students' individual study of the density concept with a worksheet that was designed to incorporate the major steps of conceptual change learning. The tests of attention, effort and conceptual understanding were administered as post-tests. The responses of 203 students who had been found to possess the target misconception were analyzed. The results of a path analysis revealed that students' motivational characteristics variables did not influence cognitive conflict. Failure tolerance and mastery goal orientation, however, influenced conceptual understanding via situational interest, attention and effort. Self-efficacy influenced conceptual understanding via effort. Performance goal orientation negatively influenced conceptual understanding via attention and effort. Cognitive conflict influenced conceptual understanding directly as well as indirectly via situational interest.

• Journal of The Korean Association For Science Education
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• v.27 no.5
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• pp.412-420
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• 2007

In this study, we investigated the influences of the epistemological beliefs on the conceptual change processes in respects of cognitive conflict, situational interest, attention and state learning strategies. After administering epistemological belief questionnaire as a pretest, 218 seventh graders possessing misconceptions about density were selected from the results of a preconception test. The questionnaires of responses to a discrepant event and situational interest were administered. After learning with a CAI program, attention test, state learning strategy test and conception test were also administered as post-tests. Analysis of the results revealed that fixed ability, quick learning and certain knowledge, which are epistemological factors, were highly related, but only certain knowledge exerted a direct effect on conceptual understanding negatively. It also had positive effects on attention directly as well as via situational interest, and thus increased conceptual understanding, even if the effects were relatively smaller than the direct effect. However, epistemological beliefs had little influence on conceptual understanding through cognitive conflict and/or state learning strategies.

• Journal of Korean Home Economics Education Association
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• v.21 no.3
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• pp.45-64
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• 2009

The purpose of this study was to develope issue-centered teaching learning process plan for environment-friendly housing education and to apply it to the housing section of Technology Home Economics in a middle school. PRO-CON cooperative group model was used for the teaching learning process plans of 2-session lessons according to the ADDIE model. In the development stage, 7 activity materials and 20 teaching learning materials (4 reading texts, 12 pictures and photos, & 5 moving pictures) were developed for 2-session lessons. The plans applied to the 7 classes, 222 students, in the third grade of the G middle school in Gyeonggi-do during July 10th-17th, 2008. The results showed that the final pro-con was influenced by the rationals of juries' pro-con of each team and the representative's discussion besides one's environmental perspective. The intention to implement environment-friendly housing activities was significantly increased between before and after the lessons. The contents, methods, goals, and process of the 2-session lessons were evaluated over medium to somewhat higher levels. Those evaluations except methods and general satisfaction with the lessons were differed by sex, students' and their families' interests in environments but not by the type of housing. These results might support that pro-con cooperative group model of controversial issues on parking lot would be appropriate to environment-friendly housing lessons and could apply to broad issues on housing and various schools in other areas.

• Archives of design research
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• v.11
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• pp.130-139
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• 1995

The dictionary defines the word 'Design' as planning and designing. Though this is a meaning confined to decorative function, the conception of modern design in this capitalist society of mass production and mass consumption can be said to have reached a new stage of the meeting of industry and the arts. This means the two sides of design' the side of beauty and usefulness The side of beauty should be understood in view of the sense of beauty, and usefulness should also be considered from the viewpoint of consumer's taste and preference This is thought to be the natural problems of design The origin of design can be understood from the background of capitalism. But the capitalism can be said to be the mode of Western thought and action developed based on Western thinking. The capitalism is an economic system derived from the society of industrial capitalism through commercial capitalism. but this economic thinking has been resulted from a mature social system of democracy and civic society. The civic society and democracy are derived from polis of ancient Greece and Rome. and the ancient Greek and Roman society was a society developed from the social system of the nobility and slaves. Polis continued to develop based on the positive territorial expansionism centering around the Mediterranean on the basis of Hellenism. and European countries achieved the intergration of religion. society and politics based on this. thus accomplishing the spirit of capitalism Our design is believed to have been derived from the direct import of Western capitalism. Accordingly. as the original form of Western capitalism has become our economic system. so our design copied that of th West. And our traditional culture and sensitivity which are different in the original form and root of racial disposition seem to breed discord between them. It is. therefore. very important and meaningful for us to exert all possible efforts to seek the root of our disposition and tradition and grope for the appropriate thought and style of design.

• International Area Studies Review
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• v.22 no.3
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• pp.121-148
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• 2018

This paper examines the role of accounting conservatism on investment expenditure for non-financial Korean listed firms around the 2007-2008 global financial crisis using a differences-in-differences design. Specifically, this paper examines the association between an ex ante classification of firms by their level of accounting conservatism prior to the credit crisis and the ex post magnitude of the decline in investment. Consistent with prior literature, this study found that firms experienced a decline in their investment when hit by the financial crisis (Campello et al. 2010). And also this study found that firms with more conservative financial reporting experienced a smaller decline in investment activity following the financial crisis than did firms with less conservative financial reporting. Together, the results suggest that negative shocks to the supply of external finance hampers firm-level investment and that conservative financial reporting can lessen the sensitivity of firms' investment to such negative shocks. Next, this study shows that the magnitude of our findings is greater for firms more likely to suffer from underinvestment (as opposed to overinvestment). Firms that are financially constrained or have greater demand for external finance are more likely to experience underinvestment. Consistent with the predictions, this study finds stronger benefits of conservatism for firms that face relatively greater costs in raising external capital (i.e., financially constrained firms) or that have a relatively greater need to do so (i.e., firms that lack internal financial resources). This study also finds that the role for conservatism is greater in firms with a higher level of information asymmetry, consistent with the notion that conservatism mitigates financing frictions arising from information problems.

• The Journal of the Korea Contents Association
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• v.17 no.5
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• pp.153-164
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• 2017

This research concurrently conducts literature review and quantitative research methodology in order to compare aesthetic experience of and . From the perspective of viewing attitudes, two types of perception equally coexist in both exhibitions: convergent perception is predominant over distracted perception in IL while distracted perception is higher than convergent perception in MIE. However, the influence of convergent perception on the degree of satisfaction and immersion is proved only in MIE. In terms of roles of viewer, there is a tendency to weigh on passive role in both exhibitions. In particular, it is worth noting that the role is relatively high in MIE. The role of viewer do not correlate with on the degree of satisfaction and immersion, as well as modes of perception. The elements of aesthetic experience are highly rated and the use of previous knowledge acts as a positive influence on the role of viewers in IL. Through this study, we witness the fact that visitors who are familiar with traditional artworks depend upon both modes of perception as well as passive role of viewer in the digital exhibition. In conclusion, remediation through digital technology has blurred the boundary of the dichotomy of a viewing attitude and a role of viewer depending on exhibit media, consequently MIE bears both natures of traditional artworks and digital media.

• The Korean Journal of Archival Studies
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• no.57
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• pp.35-73
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• 2018

This study aims to elucidate the implications for 20 years of the establishment of the information disclosure law by analyzing contents of the public regulations of 50 states of the United States. For the purpose, it looks at the general outline of the open meetings law of the 50 states, including the requirements and procedure of the advance notification of the meeting, and the protest procedure and penalties for the violation of the law. As a result of analysis, under the law, public meetings should announce their schedule and agenda in advance, and minutes of meetings and recording of meetings should be accessible to citizens. Furthermore, a person who violates the law for opening meetings could be fined or imprisoned. The implications for the establishment of the Open Meetings Act in Korea are as follows: First, the open meeting system starts with the appropriate period and method of advance notice of meeting holding. Second, the substantive contents of the advance notification guarantee the effectiveness of the meeting disclosure system. Third, the method and subject of advance notification should be as wide and diverse as possible. Fourth, all decisions of the meeting that violate the law are null and void. Fifth, a system should be set up so that any citizen could easily raise objections to the violation of the law. Sixth, the person who violates the law should be held responsible. Lastly, citizen access to minutes, recordings as well as comprehensive meeting minutes writing including attendees, agendas, and ballots should be guaranteed.

• International Commerce and Information Review
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• v.3 no.1
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• pp.69-81
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• 2001

인터넷무역은 Global Marketing이 가능하고 거래처 발굴이 용이하기 때문에 저렴하고 손 쉽게 무역기회를 창출할 수 있다. 그러나 이러한 장점과 동시에 인터넷은 수많은 경로를 통해 정보를 전달하거나 수신되기 때문에 검증되지 않은 정보를 접할 가능성이 높고 익명과 비대면(非對面)으로 이루어지기 때문에 이를 통해 발생하는 리스크도 커지게 된다. 특히 IMF 이후 해외바이어들이 내수시장 침체를 만회하기 위한 국내 업체들의 수출확대 심리를 이용하여 외상으로 상품을 받은 후 대금을 지불하지 않는 등 인터넷을 통한 무역사기가 급증하고 있다. 본 연구에서는 인터넷무역 피해사례를 살며보고 이를 통해 피해 발생원인을 분석하고 사기예방을 위한 몇 가지 방안을 제시하고 있다. 인터넷무역 피해는 인터넷의 특성에 기인한 바가 없지 않으나 상당 부분이 무역업체들의 노력 부족에 기인하고 있다. 따라서 사기예방을 위해서는 제도적인 접근도 중요하나 무엇보다 무역업체 스스로 세심한 주의와 철저한 사전작업이 선행되어야 할 것이다.

• Annual Conference on Human and Language Technology
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• 1989.10a
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• pp.77-80
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• 1989

높임법의 최소형 정립은 말본범주의 인지뿐만 아니라, 사전의 어휘항복 설정에 절대적 중요성을 갖는다. 굴곡가지의 높임법 낱덩이, 곧 최소형 인지의 요건은 첫째, 분포상 굴곡가지가 줄기에 직접 통합되어야 한다는 것이며, 둘째, 줄기에 직접 통합되는 요소가 높임법의 의미를 가져야 한다는 것이다. 단순형태소가 줄기에 직접 통합하여 존대의 의미를 가지는 것은 홑최소형이 되고, 다른 것과 의무적으로 통합하여 줄기에 직접 통합되는 것은 겹최소형이다. 의무적인 겹최소형이 다시 독립적으로 설 수 있는 비의무적 요소와 통합하여 새로운 존대의 의미를 생성한다면, 이 또한 겹최소형이 된다. 높임의 최소형은 높임법과 의항법의 이차원의 성격을 띤다. 따라서 높임의 최소형의 전 분포는 높임의 등분과 함께, 의향법 체계에 걸쳐 있다. 최소형은 풀이씨의 종류에 따라 다름도 주의할 일이다. 시상법은 높임법의 구성소일 뿐이며, 또한 그 자체 독립하는 것으로 높임법과 의향법과는 그 차원을 달리한다.