• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 1999.10a
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• pp.339-344
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• 1999

For the Tailor Welded Blank sheet used for automobile body panel, the characteristics of fatigue strength and crack propagation behavior were studied. The thickness of specimen was machined to be same (0.9mm+0.9mm) and different (0.9mm+2.0mm). As a base test, mechanical properties around welding zone were examined. The results indicated that there were no significant decreases in mechanical properties, but hardness around welding bead is 2.3 times greater than base material. The fatigue strength was the highest when the loading direction was parallel to the welding direction, which was about 85% of tensile strength of base material. It was decreased by 8.5% when the thickness of specimen and base material was different, and it is increased by 25% when pre-strain was applied. The crack propagation rate was noticeable decreased around welding line and rapidly increased as it passed by welding line. Reviewing the shape of the crack propagation, crack width around welding line was wide around the welding zone due to retardation of crack growth, but it became narrow passing welding line due to decreased toughness.

• The Optical Journal
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• s.129
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• pp.56-61
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• 2010

광학세계에서는 지난해부터 일본 캐논의 연구개발부장을 지낸 말전철부(末田哲夫)씨가 집필한 <광학부품의시용법과 유의점>이란 책 내용을 연재하고 있다. 본 내용은 일본의 월간 OPTRONICS에서 1982년부터 30회에 걸쳐 연재된 바 있고, 연재한 내용만 묶어 한 권의 책으로 나온 이후 지금까지 많은 광학인들이 애독하고 있는 핸드북이다. 월간 OPTRONICS는 1990년에 책 내용을 세부에 걸쳐 수정함과 동시에 렌즈에 대한 기초를 보다 충실히 하고 비구면 렌즈, Rod 렌즈, 홀로그램, 고체 촬상디바이스, 회절광간섭방식 엔코더 등을 새롭게 첨가하여 보다 알찬 내용으로 보강하여 증보개정판을 내놓았다. 국내에서는 (주)그린광학에서 본 자료를 입수하하여 사내자료로 활용하고 있을만큼 시대와 장소를 초월하여 아직도 광학산업현장에서 유용한 자료로 읽혀지고 있다. 비록 일부 내용들은 우리나라 산업현실과 다소 차이가 있는 부분도 있을 것이나 광학기술의 역사와 기반이 앞서있다고 생각되는 일본의 실질적인 기술관련 자료이기 때문에 국내 업체 관련분야에 종사하시는 분들에게 일독을 권해드리고 싶은 마음에 광학세계에서도 2009년 7월호부터 연재를 하게 되었다. 전체 내용을 살펴보면, 제1부에는 대표적인 광학부품에 대한 설명, 제2부에는 그것들을 사용한 광학시스템과 그것들에 관한 기본적인 사항의 해설, 제3부에는 광학부품을 수입하는 경우의 측정방법과 그것들을 시스템으로 조립하는 경우의 조정방법 예 등을 소개했다. 기술내용은 응용범위가 넓다고 생각되는 구체적인 예를 기본으로 소개했다.

• Ocean and Polar Research
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• v.30 no.2
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• pp.141-148
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• 2008

This paper aims at estimating consumer surplus for recreational sea fishing in Tongyeong coastal area using individual travel cost method. A Poisson model (PM), a negative binomial model (NBM), a truncated Poisson model (TPM), and a truncated negative binomial model (TNBM) are applied for individual travel cost method in order to account characteristics of count data (non-negative discrete data.) The survey was conducted for 462 inshore anglers using personal interview method in Tongyeong during July and October 2007. Respondents were asked about how often they do fishing, travel costs, catch, income, and so on. Because of over-dispersion problem in PM and TPM, NBM and TNBM were considered to be more appropriate statistically. All parameters estimated are statistically significant and theoretically valid. As the results based on TNBM, consumer surplus per trip was estimated to be 183,486 won, total consumer surplus per person and per year 3,399,658 won, and the marginal effect of consumer surplus on % changes in catch rate is 185,372 won.

• Journal of the Korean Society of Food Science and Nutrition
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• v.29 no.4
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• pp.743-746
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• 2000

The possiblity of sepiae os as a calcium supplement in food was studied. Elementary contents of sepiae os were as follows; Ca 53.254%, O 26.781%, Na 14.905%, Cl 4.37%, Sr 0.507%, P 0.068% and Si 0.051%, respectively. Most of calcium in sepiae os was present as a form of CaCO3. Sruface area of sepiae os was found as 386 m2/g, and scanning electron micrograph showed sepiae os has multilayer struture. Buffering capacity of sepiae os that of CaCO3. With above results, sepiae os can be used as a calcium supplement in food with good chacterateristics.

• Korean journal of applied entomology
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• v.9 no.1
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• pp.21-24
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• 1970

Effect of seed disinfectants for controlling the soybean anthracnose was investigated with percent of seedling infection to seed or soil and with inhibition zone on potato dextrose agar. The chemicals tested were as follows: Arasan, Orthocide, Phygon-XL, P.T.A.B. and Mercuron. In seed inoculation, all the chemicals used resulted in significantly less seedling infection than that obtained in control. In the case of soil infection, the result was similar to the above but percentages of the infection were lower than the seed inoculation. Percentages of seedling infection were not necessarily correlated to the inhibition zones on potato dextrose agar by the same chemicals.

• Annual Conference on Human and Language Technology
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• 1993.10a
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• pp.527-532
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• 1993

한국어 어휘부 구성에 기능동사(경동사) 구문에 관한 언어정보의 수록은 필수적이다. 범용적 대규모 한국어 어휘자료 database 구축을 위한 기능동사 구문과 언어학적 분석 기술과 관련하여 제기되는 여러 문제들 중에서 기능동사의 어휘적 한정의 문제는, 어휘부 중심의 논의를 펼칠 때, 각별한 중요성을 갖는다. 본 발표에서는 우선 확장된 기능동사 개념에 의거하여 기능동사 정보를 어휘부에 반드시 수록해야 할 논거를 제시하고, 기능동사의 어휘적 한정의 문제를 집중적으로 거론하고자 한다. 요점은 기능동사 구문이 서술명사와 기능동사의 결합에 의해 성립된다고 볼 때 이 두 범주의 어휘적 실현은 예측불가능한 제한적 결합관계에 의해 특징지어지므로, 일정한 서술명사와 결합 가능한 기능동사의 어휘적 형태를 어휘부에서 낱낱이 한정하고 기재하여야 하리라는 것이다. 이를 위한 필수적인 연구작업은 크게 상호보완적인 두 부분으로 이루어진다. 한편 한국어 서술명사의 총체를 목록화하고, 그 개별어휘 하나하나에 대해 가능한 기능동사 구문과, 구체적인 기능동사 어휘를 한정하는 것이 필요하다. 또 한편으로는 한국어 동사의 총체를 목록화하여, 그 개별어휘 하나하나의 가능한 통사적 실현을 체계화하는 과정에서 기능동사 용법을 빠짐없이 가려내는 작업이 요구된다고 보겠다.

• Journal of Korean Medical classics
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• v.19 no.4
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• pp.219-225
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• 2006

The result is the followings after investigating composition, dosage and usage of Sagunjatang(四君子湯), Samultang(四物湯), Palmultang(八物湯), Sipjeondaebotang(十全大補湯) in literature by country and Era 1. Sagunjatang has become equal to Panax ginseng(人蔘), Atractylodes japonica(白朮), Poria cocos(복령) each for 2 Jeon(錢), Glycyrrhiza uralensis(甘草) 1 jeon since the Ming Dynasty in China and it is standardized by Panax ginseng, Atractylodes japonica, Poria cocos and Glycyrrhiza uralensis each for 1 Jeon 2 Pun(分) 5 Ri(里) since Dongeuibogam in Korea. 2. Samultang has become equal to Angelica gigas(當歸) and Rehmannia glutinosa(地黃) each three Jeon, Cnidium officinale(川芎) is 1 Jeon 2 Pun or 1 jeon and Paeonia lactiflora(芎藥) 2 Jeon since the Ming Dynasty in China and it is standardized by Angelica gigas, Cnidium officinale, Paeonia lactiflora and Rehmannia glutinosa each for 1 Jeon 2 Pun 5 Ri since Dongeuibogam in Korea. 3. In the case of Palmultang, compositional usage of medicine was different in the Ming Dynastry and the Ching(靑) Dynastry in China. Total dosage was increased and ratio of Angelica gigas and Rehmannia glutinosa was increased comparatively in the Ching Dynasty. All prescription of medicine was consisted of 1 Jeon 2 Pun and specific dosage was presented except Euirimchwalyo(醫林撮要) that dosage was not recorded in Korea. 4. Sipjeondaebotang tended to increase total dosage in the latter part in China. Dosage was mostly used 1 Jeon thus Dongeuibogam but Bangyakhap(方藥合編) used 1 Jeon 5 Pun differentially.

• Journal of the Korean Society for information Management
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• v.21 no.1
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• pp.23-53
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• 2004

The purpose of this study is to analyze the identity and relationship of library and information science by exploring theoretical aspects of LIS research, including theory building and theory use. The sample of this study consists of 1,661 research articles published from 1984 to 2003 in two Korean and two American core LIS journals. Theory articles are analyzed with two scales, such as '4-degree of theory efficiency' and '5-degree of theory use' Each article is coded in terms of journal, country, publication year, subfield, and methodology of the article. and affiliation, department, and research experience of the first author. The theories used therein are coded according to their origin and age. Also, an author co-citation technique is applied to represent intellectual structure on a two-dimensional map, which has been constructed by theory use of LIS authors fur 20 years.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.32 no.4B
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• pp.233-242
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• 2012

In the past, the domestic water supply benefit of dam has been estimated by replacement dam cost approach. But it is logically inappropriate that we use the second priority dam as a replaced facility. Therefore, this study aims to suggest the estimation method of the domestic water supply benefit by using demand function, which is deduced from Willingness-To-Pay (WTP) of consumers. For this purpose, a survey concerning the marginal WTP is carried out according to the change of water use amount used, targeted 1,000 households in metropolitan area. And by using the marginal WPT, we estimated the demand function of a family. Finally, the monthly benefit equation is derived. The approach is demonstrated and discussed for an example, the Song-Li-Won dam project which is now renamed Young-Ju dam. From the example study, the total benefit for the durable years (50 years), was about 90 billion won. The method proposed herein is expected to be practical and useful in the economic analysis of the domestic water supply project including dam construction, as well as in further studies.

• The Journal of the Korea Contents Association
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• v.14 no.4
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• pp.135-147
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• 2014

The wages of migrant workers about the rational discrimination and equal treatment have been treated partially. Foreign workers are also discussed in terms of the productivity and rational discrimination, but it is very limited. The Business community has been persisting that the minimum wage system for foreign workers should be excluded. Unlike local workers, migrant workers are relatively in that position with limited work place, a limited period of time to provide labor for the purpose of wage, in that points, the gap of the reality and the laws surrounding wages can be identified. This is expressed the conflicts and distress between employers and workers. Meanwhile, wages and equal treatment on the part of the study have been discussed, but it is hard to be organized clearly. Be related to this study, it will have a limitation. In this paper, since the employment permit system was enforced, the status of wages and distress and the factor of conflicts between the employer and the foreign worker examine and suggest the improvement plan for the law regarding wage.