• 한국수학교육학회지시리즈A:수학교육
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• 제29권1호
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• pp.55-61
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• 1990

There are three objectives of this paper. First, we present an elegant and simple generalization of Abel's theorem (i .e. tile Abel summability (on the unit disk of the euclidean plane) is regular). Second, we consider the definition of Abel summability through lim (equation omitted) which immediately has clear connexctions with CeSARO summability and Cesaro sums (equation omitted). This approach examplifies some simple aspects of so-called Tauberian theorems of divergent series. Third, we present the applications of the previous results to find the limits of transition probabilities of homogeneous Marker chain. Finally, we explain why the original Abel's theorem which looks obvious is difficult to be proved, and can not be proved analytically.

• International Journal of Computer Science & Network Security
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• 제24권5호
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• pp.89-94
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• 2024

The main purpose of the study is to determine the main elements of the use of digital technologies for learning a foreign language in educational institutions. The era of digital technologies is a transition from the traditional format of working with information to a digital format. This is the era of the total domination of digital technologies. Digital technologies have gained an unprecedented rapid and general distribution. In recent years, all spheres of human life have already undergone the intervention of digital technologies. Therefore, it is precisely the educational industry that faces a difficult task - to move to a new level of education, where digital technologies will be actively used, allowing you to conveniently and quickly work in the information field for more effective learning and development. The study has limitations and they relate to the fact that the practical activities of the process of using digital technologies in the system of preparing the study of a foreign language were not taken into account.

• 한국사회복지학
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• 제66권3호
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• pp.185-208
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• 2014

본 연구의 목적은 한국의 공공부조제도에서 근로연령대 빈곤인구의 빈곤 탈출과 노동시장에 통합을 촉지 또는 저해하는 요인이 무엇인지를 실증적으로 분석하는 데 있다. 한국보건사회연구원의 복지패널 자료를 활용하여 분석한 결과, 한국의 근로연령대 기초생활보장수급자들의 기간 의존성이 나타나고 있지만, 이는 수급기간이 길어짐에 따라서 복지의존성이 강화되었기 때문이라기보다는 장기 수급의존층의 경우 수급 탈출에 취약한 조건들을 가지고 있기 때문이라는 점을 확인하였다. 특히 수급자들이 빈곤으로부터 탈출해서 노동시장으로 이행하는 데 장애로 작용하는 요인들을 분석한 결과, 인적자본이나 사회적 자본과 같은 특성보다는 청년피부양가구구성원의 존재 여부나 직업알선서비스 참여 여부가 빈곤탈출에 유의한 영향을 주는 것으로 나타났다. 이는 수급으로부터의 탈출이 교육-의료 서비스가 수급여부와 연계되어 있다는 수급제도의 특성이나 적극적 노동시장프로그램의 성격과 같은 제도-정책의 요인이 크게 작용하고 있다는 것을 의미한다.

• Journal of Welding and Joining
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• 제28권5호
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• pp.69-74
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• 2010

Irradiation behavior of the reactor pressure vessel SA508 class 3 steel weld metals was examined by Charpy V Notch impact specimens. The specimens were exposed to a fluence of $2.8{\times}1019$ neutrons(n)/$cm^2$(E>1 MeV) at $288^{\circ}C$. The irradiation damage of weld metal was evaluated by comparison between unirradiated and irradiated specimens in terms of absorbed energy and lateral expansion. The specimens for neutron irradiation were welded by submerged arc welding process at a heat input of 3.2 kJ/mm which showed good toughness in terms of weld microstructure, absorbed energy and lateral expansion. The post-irradiation Charpy V notch 41J and 68J transition temperature elevation were $65^{\circ}C$ and $70^{\circ}C$, respectively. This elevation was accompanied by a 20% reduction in Charpy V notch upper shelf energy level. The lateral expansion at 0.9mm irradiated Charpy specimens showed temperature elevation of $65^{\circ}C$ and was greatly decreased due to radiation damage.

• 대한수학교육학회지:수학교육학연구
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• 제17권2호
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• pp.91-109
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• 2007

이 논문은 이원일차연립방정식과 관련하여 초등수학과 중등수학의 연결성 문제를 분석한 것이다. 초등학교 수학 교과서와 중학교 수학 교과서에서 이원일차연립방정식 문장제가 다루어지는 방식을 연결성 측면에서 분석하고, 연결성을 강화하는 접근법을 제안하였다. 교과서 분석 결과 이원일차연립방정식 문장제에 대한 초등학교 수학 교과서와 중학교 수학 교과서의 접근법이 서로 연결되어 있지 않았다. 이에 이 논문에서는 이원일차연립방정식 문장제 해결에 그림그리기 전략을 도입하여 초등수학과 중등수학의 연결성을 강화하는 방안을 한 초등 6학년 아동의 사례를 통해 제시하였다.

• 보건교육건강증진학회지
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• 제11권1호
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• pp.70-84
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• 1994

On the basis of the study intended to research by cross-sectional study keeped pace with semi-longitudinal study the growth accelerating phenomena that MGA(Maximum Growth Age) in teenager's body height. The duration of study is from Oct. 1st. 1991 to September 30 1992 and the data are analysed through computer. The body height and MGA of Koreans who had been for during the period from 1898 to 1973 proved transition of the growth accelerating phenomena by research data reported between 1913 and 1990. The results are as follows: 1. Maximum Growth Age The MGA's in body height of male are respectively the age 15.024 in 1913, 14.28 in 1940, 13.65 in 1959, 13.86 in 1967, 12.52 in 1983, 11.39 in 1987, 12.36 in 1990, while those of female are the age of 12.0 in 1940, 12.36 in 1959, 10.45 in 1969, 11.15 in 1985, 10.27 in 1988, 10.23 in 1990 ; these data show that the MGA of the Korean has been getting younger. 2. The correlation of the MGA's in body height are as below ; Male ; r = -0.448(p<0.01) Female ; r = -0.404(p<0.05) 3. The equation of linear regression of MGA's in body height are as below ; Male ; Y(MGA) = -0.0316X(the year)+75.297 Female ; Y(MGA) = -0.035X(the year)+79.986 4. The MGA's in body height are shown in Table 3. 5. From the transition of the growth accelerating phenomena, we can compute the fact that the MGA's has been getting younger by 0.3 year per 10 years. 6. The future growth accelerating phenomena in body height, the MGA's of male are respectively the age 12.25 in 1995, 12.09 in 2000, 11.94 in 2005, 11.78 in 2010, while those of female are the age of 10.16 in 1995, 9.98 in 2000, 9.81 in 2005, 9.64 in 2010, these data show that the MGA of female are more younger than that of male.

• 디지털융복합연구
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• 제12권11호
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• pp.565-574
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• 2014

본 연구는 한국에서 대학생으로서의 삶을 살펴본 것이다. 본 연구의 연구참여자들은 대학생으로서 '생각하는 연습도 해 본적 없고, 생각할 여유도 없음', '다른 사람의 판단과 결정만 바라봄', '썩 내키지 않지만 주어진 것에 맞추어 그냥 살기', '어떻게 살아야 할지 모르겠음'의 삶을 경험하고 있었다. 연구참여자들은 청소년기 내내 획일화된 입시중심의 인생목표 아래에서 지내다보니 자주적인 삶의 기회가 부족했다. 그것은 연구참여자들을 성인기에 진입하지 못하게 하는 걸림돌이 되고 있었다. 따라서 연구참여자들이 성인기에 적응적으로 진입하기 위해서는 대학의 발달과정상 완충적 역할과 사회적 인식의 전환이 요구된다.

• 대한지리학회지
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• 제42권2호
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• pp.196-217
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• 2007

로스앤젤레스 한인타운은 지난 10여 년에 걸쳐 소수민족 이민자들의 엔클레이브(enclave)에서 초국적 경제공간으로 변모하고 있다. 도시정부의 재개발 계획과 지역 한인들의 경제재활성화를 위한 노력이 진행됨과 동시에, 한국으로부터의 초국적 행위자들은 기업부문뿐만 아니라 부동산 시장에 공격적으로 투자하고 있다. 그러나 모순적이게도 이러한 다중스케일적 지리적 변동은 한인타운을 로스앤젤레스에서 가장 빈곤하고 위험한 내부도시의 하나로 전락시키는 데에 기여하고 있다. 본 논문은 장소에 기반한 아래로부터의 접근을 토대로 이러한 공간적 모순의 본질을 탐색하는데, 특히 헤게모니를 쥔 로컬 행위자들, 도시정부, 초국적 행위자들이 형성하는 다중스케일적 네트워크가 최근 한인타운이 지니는 일상적 삶과 유리된 재현의 경제를 발달시키고 있음을 지적한다. 또한, 본 연구는 이러한 한인타운의 도시재생이 이 구역에 거주하는 한인들과 라티노 노동자들을 포함하는 커뮤니티 구성원을 배제시키고 착취하고 있음을 밝히고자 한다. 결론적으로 본 연구는 한인타운의 지속가능한 미래는 민족 담론을 극복하고 인종, 민족을 횡단할수 있는 '장소기반의' 커뮤니티 의식에서 논의되어야 함을 주장한다.

• Bulletin of the Korean Chemical Society
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• 제14권1호
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• pp.113-117
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• 1993

Good yield synthetic routes for the production of new B-alkyl-dithiaborane clusters are reported. The syntheses of the B-alkyl-dithiaboranes are based on the use of Fischer-type carbene reagents to activate the B-H bonds of dithiaborane for alkyl-addition reactions and are the first examples of transition-mediated reactions of dithiaborane to be reported. Thus, reactions employing arachno-$S_2B_7H_8$- and $(CO)_5M{C(R_1)R_2}$ (M = Cr, W; $R_1 = CH_3,\;C_6H_5;\; R_2 = OCH_3,\;SC_6H_5)$ were found to yield the intermidiate anions I, $[(CO)_5M{C(R_1)R_2S_2B_7H_8}]^-$, which upon protonation gave the corresponding neutral, air-sensitive cluster arachno-4-$RCH_2-6,8-S_2B_7H_8(R=CH_3,\;IIa;\;C_6H_5,\;IIb)$ range from 30 to 35% yield. Complexes IIa and IIb are isoelectronic with arachno-6,8-$S_2B_7H_9$ and, on the basis of the spectroscopic data, are proposed to adopt a similar arachno cage geometry in which an $RCH_2$ units are substituted to 4 position boron atom of the arachno-6,8-$S_2B_7H_9$.

• 수산해양교육연구
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• 제11권1호
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• pp.24-42
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• 1999

I have studied historical transition process of fisheries industries, fisheries Institute in abreast of developing fisheries industries of west coast of Korea since 1910 year with regard to the Gogunsan Is. The results were summarized as follows. In 1910 year, fishery industry has been carried out shifting fishing gear e.g set-net in shallow waters, small stow net, small seine net adapting to the tophorgrapical feature, shape of coast, oceanic condition, however, the fishing gear and fishing method were undeveloped, so that, Japanese fishermen had been exploited fisheries resources penetrating the fishing ground. Most important species were lot of captured croaker, cod, spanish mackeral, sea abream, herring in coastal sea. nowaday, squid, anchovy, shrimp, crab, pompret were much captured. The species were captured in 18 century were not captured. It is rarely than that period. Fishereis aquatic culture had been not farmed till 1960 year, but sea laver, shrimp, crab, had been breeded 1970 year also, the fresh water fish e.g. eel, cat-fish had been breeded activately. The fisheries processing industry were composed of salt. icing, dry, method. the salted fish industry had been prevailed at Gangyng, Kwangchon, Kunsan, Julpo comparatively. The fisheries institute had been established at Kunsan at first, but institute established in other region had been abolished in a short time. This phenomenon was related with development of fisheries resources. The western coast fisheries industries had been wasted of decreasing of fisheries resources, variation of environment. Accordingly, the study of preserving the marine resources. educated man power who engaged in fisheries field have to accomplish. Sea was dying with reason of loss of mud in west coast factory waste, waste of life the increase of accident of sea polluted, each illegal fishing industry physical and chemical reason etc. in this respect, Kusan maritime college, fisheries developing agency, institute have to take important role for developing fishing industry.