• The Journal of the Korea Contents Association
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• v.15 no.6
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• pp.148-156
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• 2015

Some of Chekhov's short stories strongly depicted 'women' physical desire and the sins of the flesh. Chekhov created his own eroticism in life as it is through the stories. While the Chekhovian eroticism naturally emphasized on 'sensual issue' between men and women, it is not limited to the erotic expressions only. In the stories, Chekhov is saying about the fundamental causes that why women must cheat on their men, so that he focused on their mental conflicts between corporalities and morality. Finally, women' infidelity and deviance make them cause misfortunes more than ever. Focusing on the best Chekhovian eroticism short stories, , , and , the writer explores Chekhovian eroticism's background and definition, and characteristics by analysis each text deeply.

• Journal of Biomedical Engineering Research
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• v.20 no.6
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• pp.609-619
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• 1999

심장은 생명의 가장 중요한 장기 중 하나이며, 이 중요성은 인공심장의 연구를 불러일으켰다. 본 고에서는 전세계적으로 연구되는 인공 심장 제어의 방법론, 추세 그리고 현 상황을 비교 분석하였다. 인공 심장 개발에 있어서 중요한 연구 분야 중 하나인 인공 심장 제어는 자연 심장의 역할을 최대한 모방하여야 하는데 현실적으로 각종 생리적 제어 인자를 얻기에는 센서 기술의 한계가 있다. 따라서 인공 심장을 위한 많은 제어 변수가 연구되었으나, 단지 몇 가지만 실제로 적용되는 상태이다. 본고에서는 왜 다른 요인들이 제외되었으며 무엇이 현재 제어 방식의 선택 기준으로 고려되었는지를 설명한다. 이것을 설명하기 위하여 인공 심장의 제어에 앞서서 자연 심장의 제어를 짧게 설명하고, 5개의 대표적인 인공 심장 제어 연구 조직을 선정하여 소개와 정리를 하였다.

• Journal of Labour Economics
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• v.38 no.4
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• pp.57-81
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• 2015

In this paper we try to explain delays in one's first marriage that are observed in contemporary society by accounting for possible factors that may play a substantial role in delaying marriages. Discrete-time survival analysis with unobserved heterogeneity was employed. The result indicates that the odds of getting married compared to odds of not getting married are 0.91 times, i.e. 8.5% lower for women with bachelor's degree than women with high school diploma or below. The odds of getting married compared to odds of not getting married are 0.4 times, i.e. 59.6% lower in case of women with masters and/or doctorate program degree than women with bachelor's degree. Employed men's odds of getting married to not getting married are increased by a factor of 1.65 compared to the unemployed men. In addition, if one's family circumstances are economically below average at the age of 14, the odds decrease by a multiple of 0.65. With these results, we are able to conclude that not only education level but also one's economic ability play significant roles in determining one's marriage decision.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.27 no.3
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• pp.149-162
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• 2017

Objectives: Six cases of non-oral occupational methanol poisoning were found in mobile phone parts manufacturers in South Korea during the period from 22 January 2016 to 5 October 2016. We conducted this study to determine the cause of the accident including social environment factor. Methods: We interviewed the cases. Based on that, we described this poisoning accident narratively and arranged the evolution of the accident in chronological order. We used the Haddon matrix method to investigate the cause of the accident. Results: It was found that six cases were all dispatched workers who were under poor working condition including working time exceeded 12 hours a day, not given basic occupational health and safety information etc. Occupational disease associated with dispatched work was difficult to be reported. 2 cases were not able to identify the cause of the disease within one year. Conclusions: In short, the direct cause of the poisoning accident was that workers were exposed to high concentration of methanol(over 1,000 ppm). One of the main fundamental cause is that dispatched worker is rampant in the supply chain of mobile phone production. To protect dispatched workers, appropriate occupational safety health measures are needed urgently.

• Education of Primary School Mathematics
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• v.13 no.1
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• pp.13-24
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• 2010

Mathematics educators oriented to reform-based curricular have asserted that mathematics teachers should lead instructions where all students in their classrooms are able to participated. In this paper, some practices for them to implement it are discussed. Before explaining them, some discussions are made about students ability to construct knowledge. One of them is that teachers should know different learners construct different understandings because of their differences of prior knowledge and reasoning ability. Also, it was discussed that teachers consider classroom environments, assigning children's sitting and tasks in the light of learning. The reason to state them is that perspectives of them should be changed. Finally, "Teacher's careful listening to learners' responses", "Why do think in that way?, How do you know?, What is it meant?", "accepting ideas from all learners", "no supporting a particular idea", "utilizing waiting time", and "teacher's responses to learner's errors and mistakes" are discussed as practices for letting all learners be participated in the mathematics instruction.

• Journal of Educational Research in Mathematics
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• v.21 no.4
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• pp.379-398
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• 2011

In learning environment at mathematics education, prove and refute are essential abilities to demonstrate whether and why a statement is true or false. Learning proofs and counter examples within the domain of limit of sequence is important because preservice teacher encounter limit of sequence in many mathematics courses. Recently, a number of studies have showed evidence that pre service and students have problem with mathematical proofs but many research studies have focused on abilities to produce proofs and counter examples in domain of limit of sequence. The aim of this study is to contribute to research on preservice teachers' productions of proofs and counter examples, as participants showed difficulty in writing these proposition. More importantly, the analysis provides insight and understanding into the design of curriculum and instruction that may improve preservice teachers' learning in mathematics courses.

• Applied Biological Chemistry
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• v.32 no.2
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• pp.170-177
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• 1989

In order to seek the molecular basis of higher insecticidal activity of the carbamates with two methyl groups, m-xylyl-N-methylcarbamate(MXNMC) than the corresponding unsubstituted phenyl N-methylcarbamate(PNMC), these two derivatives have been studied by molecular orbital(MO) theoretically using extended $H\ddot{u}ckel$ theory(EHT), and analysis of regression and linear free energy relationship(LFER). The most stable stereo structure(Z, Z) shows that the phenyl group occupies vertical(${\theta}=90^{\circ}$) position on the plane of the N-methylcarbamyl group. Regression analysis shows that especially good correlation exists between the $pI_{50}$ values and the calculated MO quantities when the hydrogen atomic charge of metaposition and of m-methyl groups, and LUMO energy are taken as variables. The LFER analysis on the carbamylation indicates that field(F) effect(60%) is slightly larger than resonance(R) effect(40%) in PNMC(E>R), whereas, in case of MXNMC, R effect(98.6%) is much larger than F effect(1.4%)($R{\gg}F$). From the basis on the findings, the enhancement of insecticidal activity of MXNMC may be the result of hyperconjugation by m-methyl groups.

• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 2001.04a
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• pp.201-205
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• 2001

본 연구에서는 한지가공공정의 하나인 도침공정을 현대의 칼렌다링 공정과 비교 분석을 실시한다. 도침은 커다란 나무뭉치를 사용하여 반복적으로 여러 장이 겹쳐 진 한지를 두두림으로서 한지 표면을 평활하게 하며, 광택도를 높이는 효과를 볼 수 있다. 나무뭉치는 밑면이 평활해야만 할 것이다. 보통 한지 제조업자들은 경험 을 토대로 얼마만큼의 도침이 필요한지 결정하고 실시하곤 한다. 이러한 도침공정 에서 현대의 칼렌다링이 할 수 없는 중요한 공정이 존재한다면, 현대의 초지기에도 이러한 원리를 적용함으로써 효과적인 종이의 품질개선을 이룰 수 있는 여지가 충 분히 있다고 판단된다. 한지에 있어서 도침의 역할이 무었인지, 도침은 칼렌다링으 로 대치할 수 있는 지 둥을 비교 검토하였다. 도침공정 연구를 위하여 라이너지 한 종류, 백상지 한종류, 최근에 제조된 전통 한지 세 종류를 사용하였다. 라이너지와 백상지는 일반 제지공장에서 제조되는 방 식을 그대로 사용하여 기계 칼렌다를 통과한 샘플을 얻었으며 칼렌다를 통과하지 않은 라이너지와 백상지를 특별히 같은 지종에서 얻어서 실험을 실시하였다. 기계 칼렌다링을 하지않은 라이너지와 백상지 세 종류의 전통한지는 실험실 칼렌다를 통과시켰고, 또 각각에 도침을 실시하였다. 샘플들의 기본 물성과 처리조건을 표 1 에 정리하였다. 도침 공정에서 사용한 나무 뭉치의 무게는 약 64Kg 이며, 최대 높이 41cm 로 들어올려져 자유낙하에 의한 충격을 종이에 가하였고, 분당 충격횟수는 63회 였다. 라이너지는 도침 및 칼렌다에 의해 밀도가 서서히 증대되는 것을 볼 수 있었다 (그림 1). 도침은 칼렌다에 비해 밀도 증대에 효과적이지는 못하였다. 반면 백상 지에서는 도침이 기계 칼렌다나 실험실 칼렌다보다 현저히 크게 밀도를 증대시킴을 볼 수 있었다 (그림 2). 칼렌다는 종이를 높은 전단력과 압축력으로 변형시키는데 비해 도침은 단순히 압축 압력만을 종이에 가하는 것이 다르다고 볼 수 있는데, 라 이너지와 백상지가 같은 조건하에서 왜 이러한 큰 차이를 보이는 이유를 아직 알수 없다.

• Korean Journal of Logic
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• v.16 no.3
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• pp.407-436
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• 2013

I examine the notion of truth in the intuitionistic type theory and provide a better explanation of the objective intuitionistic conception of mathematical truth than that of Dag Prawitz. After a brief explanation of the distinction among proposition, type and judgement in comparison with Frege's theory of judgement, I examine the judgements of the form 'A true' in the intuitionistic type theory and explain how the determinacy of the existence of proofs can be understood intuitionistically. I also examine how the existential judgements of the form 'Pf(A) exists' should be understood. In particular, I diagnose the reason why such existential judgements do not have propositional contents. I criticize an understanding of the existential judgements as elliptical judgements. I argue that, at least in two respects, the notion of truth explained in this paper is a more advanced version of the objective intuitionistic conception of mathematical truth than that provided by Prawitz. I briefly consider a subjectivist's objection to the conception of truth explained in this paper and provide an answer to it.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.26 no.4
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• pp.389-395
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• 2016

Objectives: Acute methanol poisonings known to be typical occupational diseases occurring in developing countries broke out in sub-contract manufacturers in the early 2016. The present paper attempted to identify underlying causes which hide under apparent findings, and suggest alternative policies to prevent recurrence of similar intoxication Methods: We evaluated occupational health and safety characteristics of workers in micro-enterprises similar to workplaces with methanol poisoning by in depth-interview of employers, workers, and labor inspectors, and literature review. Results: The common findings of workplaces with methanol poisoning were addressed; First, the victims were illegal agency workers. Second, the workplaces were sub-contract micro-manufacturers with less than 5 employees. Investigators found that local ventilations did not work, while most of workers did not wear any proper personal respiratory protective equipment in the workplace. In addition, periodic environmental monitoring and medical check-ups were not done. However, these apparent findings do not appear to be root causes of methanol poisoning. Our in depth-analysis clarified a root cause; micro-enterprises with less than 5 employees are exempted with essential regulations of OSH Act, and employers do not know about OSH Act. Conclusions: We suggest occupational health policies to prevent recurrence of similar intoxication; First, government should introduce programs so that all employers should know about employers' responsibilities in OSH Act from the start of business. Second, even manufacturers with less than 5 employees should not be exempted with essential regulations of OSH Act. Finally, employers should take responsibilities for health and safety of all the workers including agency workers working in workplaces.