• 한국의류학회지
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• 제11권2호
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• pp.91-100
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• 1987

To develop the comfortable pesticid-proof clothes, wearing trials for 7 types of existing pesticide-proof clothes were done measuring skin temperature, pulse rate, humidity and temperature of inside clothing and subjective feeling such as thermal, humid and comfort sensations at $28{\pm}1^{\circ}C$, $75{\pm}5\%$ RH, 2.3 m/sec wind speed. (Experiment 1). On the base of above results, wearing trials of 6 types of new pesticide-proof clothes and 3 types of pesticide-proof clothes as control group were done with the same method as experiment 1. (Experiment 2). The results obtained were as follows 1. Heat stress was lower in newly designed pesticide-proof clothes with mesh running shirts. 2. For the body temperature regulation, it was confirmed that 6 types of new pesticide-proof clothes made of microporous fabric were better than the others.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1995년도 봄 학술발표회 논문집
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• pp.60-65
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• 1995

Recently, water-proof treatments have been required for reducing the carbonigation in the upper plate of bridge. In this study, the experiments were conducted for penetrable water proof in two ways ; one is under natural conditions and the other under artificial. The experimental results shows that the penetrable depth for the penetrable water proof shows in inverse proportional to concrete strength and auti-acid property. Also, auti-heating property is revealed excellent with the penetrable water proof and endurability under the disclosure in natural condition is not permanent

• 한국수학교육학회지시리즈D:수학교육연구
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• 제7권1호
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• pp.1-10
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• 2003

This research reviewed literatures on proof in mathematics education. Several views of proof can be classified (and identified) such as psychological approach (Platonism, empiricism), structural approach (logicism, formalism, intuitionism) and social approach (ontology, axiomatic systems). All these views of proof are valuable in mathematics education society. The concept of proof can be found in the form of analytic knowledge not of constructive knowledge. Human beings developed their knowledge in the sequence of constructive knowledge to analytic knowledge. Therefore, in mathematics education, the curriculum of mathematics should involve the process of cognitive knowledge development.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2000년도 추계학술발표논문집 (하)
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• pp.1469-1472
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• 2000

네트워크가 복잡해지고 에이전트를 이용한 분산 시스템이 증가함에 따라 악성코드의 수와 종류도 현저한 증가 추세를 보이고 있다. 코드의 안전한 실행을 위해서는 그 동안의 수동적인 대응책을 넘어선 능동적인 방법이 요구되는 시점에서 Proof-Carrying Code라는 능동적인 대응책이 제시되었지만 현실적인 문제에 봉착해 있다. 따라서 본 논문에서는 분기를 기반으로 한 Proof-Carrying Code의 변환을 시도해 기존의 Proof-Carrying Code 방식보다 효율적이고 능동적으로 코드의 안전한 수행을 보장하는 방법을 제시한다.

• 대한수학회논문집
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• 제9권4호
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• pp.853-855
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• 1994

The object of present note is to give a very short proof of Stirling's formula which uses only a formula for the generalized zeta function. There are several proofs for this formula. For example, Dr. E. J. Routh gave an elementary proof using Wallis' theorem in lectures at Cambridge ([5, pp.66-68]). We can find another proof which used the Maclaurin summation formula ([5, pp.116-120]). In [1], they used the Central Limit Theorem or the inversion theorem for characteristic functions. In [2], pp. Diaconis and D. Freeman provided another proof similarly as in [1]. J. M. Patin [7] used the Lebesgue dominated convergence theorem.

• 대한수학교육학회지:학교수학
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• 제13권3호
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• pp.501-524
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• 2011

본 연구는 초등 영재학급 학생들의 증명 능력 향상을 목적으로 증명의 본질과 구조를 경험할 수 있는 비형식적 활동 교수 학습 자료를 개발하고 이를 실제 현장에 적용한 사례들을 분석하여 초등학교 수준에서의 영재들을 위한 증명 교육의 가능성과 교육에서의 시사점을 제안하기 위한 것이다. 초등 영재학급 학생들은 비형식적 활동 교수 학습 자료를 통해 증명의 본질과 구조에 대한 기본적인 이해가 이루어졌으며 증명에 대한 중요성과 필요성을 인식하였다. 증명에 대한 흥미도도 높아졌지만 증명이 쉽다고 느끼지는 않았다. 학생들은 광고나 신문, 패러독스에서 가정을 분석할 수 있었으며, 자료 적용 후에는 어려운 증명 문제에 도전하고자 하는 의지를 보였다. 이를 바탕으로 영재학급 학생들을 대상으로 하는 증명교육의 시사점을 제안하였다.

• 한국의류학회지
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• 제14권4호
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• pp.281-291
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• 1990

Experiment I and II had done to develop the solar heat proof hat for field work in the summer. In the experiment I physical characteristics of several fabrics was tested to determine which one Is proper to make the solar heat proof hat. On the base of above results in the experiment II three improved solar heat proof hat was deviced and tested solar heat proof effect and compared the existing summer working hat by wearing trials in the environmental chamber. The results obtained were as follows. 1. In the view of the physical characteristics of six fabrics (Blue T/C, White poplin, Vapor transfer silver coating nylon taffeta, No vapor trans(or silver coating nylon taffeta, Aluminum coating T/C, Microporous fabric), the light color T/C and no vapor transfer silver coating nylon ta(feta is proper to make improved solar heat proof working hat. 2. Three improved hats that are made of white T/C, grey T/C and no vapor transfer silver coating nylon taffeta have more solar heat proof effect than the existing summer working hat. 3. Among the three improved hats, the improved hat that is made of no vapor transfer silver coating nylon taffeta is most effective to proof the solar heat.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2006년도 추계 학술논문 발표대회 논문집
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• pp.117-121
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• 2006

This study intends to suggest the effective methods for water leakage prevention around the windows in stone works to up-grade the outdoor public space that has been taken much portion of apartment housing trends. The subjects of the study was selected among the domestic subcontractors of stone works. There are four methods for water leakage prevention around the windows; Firstly, the painting water-proof method after the masonry. Secondly, the urethane water-proof method after galvanizing panels on the gap. Thirdly, the separation method between stone and substructure and the last one is water-proof method that they put some water-proof screen between stone and substructure with the EPDM sheets. According to the analysis of the water-proof effects, constructability and planning, we could approach to conclusion that the most influent items to the water-leakage are the filling material's deformation, the state of oxygenation and deterioration of work skill. Among the water-proof methods in construction the EPDM sheet is most excellent water-proof method to meet the technical conditions. However, we have to apply it to stone works as a water-proof method for the decrease of the leakage defects after standardizing the materials, test and construction skill because there are many work skills according the subcontractors.

• 대한가정학회지
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• 제37권11호
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• pp.75-83
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• 1999

To develope an efficient fire fighter’s uniform for the fire fighting work and body protection, this study examined the regulations of fire lighter’s uniform and surveyed the actual wearing conditions, satisfaction degree, preferred color and design others. The results are as follows; 1. As for the satisfaction degree, the degree was normal in ordinary, low in working uniform and heat-proof uniform and very low in water-proof uniform about its design, size, color and materials. 2. As for the color, red was preferred for the working uniform and water-proof uniform. Blue, yellow and green was preferred next for corking uniform and yellow and blue for water-proof uniform. 3. As for the design, fire fighters wanted partial revision of the present uniform. They preferred stretchy training wear style and overact style in order. For the water-proof uniform, they preferred hip-length suit and pants and next to it they liked flee-length suit, waist belt and overact in order. 4. As for the regulations of the uniform, they wanted some addition in casual uniform, water-proof pants and water-proof gloves, and some deletion in the thermal barrier of water-proof uniform and ordinary uniform. 5. As for the distribution of the uniforms, the use of coupons was highly preferred.

• 한국학교수학회논문집
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• 제9권4호
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• pp.521-538
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• 2006

본 연구는 중학교 2학년 기하증명에서 증명보조카드를 제시하는 증명지도방법을 통해 학생들의 기하증명 능력과 기하증명에 대한 수학적 태도 변화를 조사한 것이다. 대구광역시 D중학교 2학년 학생들을 대상으로 5차시 동안 증명보조카드를 이용한 수업 후 수준별 학생 7명을 선정하여 이 학생들이 작성한 학습지와 증명보조카드를 사용하기 전과 후의 변화를 중점으로 인터뷰를 하였다. 이렇게 수진된 자료의 분석에 의한 본 연구의 결론은 증명보조카드를 이용한 증명활동을 통해 학생들의 기하증명에 대한 능력 변화가 있었으며, 증명보조카드를 이용한 증명활동을 통해 기하증명에 대한 수학적 태도의 변화가 있었다.