• 한국사회복지학
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• 제57권3호
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• pp.73-103
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• 2005

본 연구는 청년패널 자료(2002-2003)를 활용하여 청년취업자의 노동이동 및 고용형태 전환의 실태를 파악하고 고용형태의 전환에 영향을 미치는 요인을 규명하고자 하는데 그 목적이 있다. 주요 분석 결과 및 정책적 함의를 제시하면 다음과 같다. 첫째, 청년취업자의 비정규직 고용은 약간의 감소를 보이지만, 같은 기간 취업청년계층이 정규직에서 비정규직이나 실업(혹은 비경제활동인구)으로 대거 전환되는 된 것으로 나타나, 우리나라의 청년계층의 고용이 매우 불안정하게 이루어지고 있는 것으로 분석되었다. 특히 여성이나 저학력자의 비정규직 고용현상이 두드러지게 나타났고, 실업이나 비경제활동 인구로 전환되는 현상이 심화되고 있는 것으로 나타나 이들 계층의 고용안정화를 위해 정부차원의 차별적인 정책이 요구된다. 둘째, 청년계층의 구직활동이 공식적인 경로에 의해 이루어진 경우나 직장에서 배치된 직무가 적절할수록 비정규직 함정에 빠질 위험이 낮아진다는 결과를 보여주어, 청년계층에 대한 취업의 경로를 공식화하고 청년계층의 교육이나 기능(기술)수준에 적합한 직무배치를 통해 고용의 질적인 수준을 향상시켜야 할 것이다. 셋째, 본 연구에서는 기업의 규모가 큰 대기업일수록 비정규직 함정에 빠지게 될 위험이 낮아지는 것으로 분석되었으나, 최근 청년계층의 대기업 정규직 채용이 매우 제한적으로 이루어지는 것을 감안할 때, 오히려 소규모 사업체나 중소기업의 경쟁력을 강화하여 청년계층의 입직을 증가시키는 방안이 모색될 필요가 있다. 마지막으로, 청년취업자의 직장형태가 정부관련 기관일수록 비정규직 함정에 빠질 위험이 커지는 것으로 나타났는데, 이와 같은 결과는 제한적인 연구기간으로 인해 단언하기는 어렵지만, 우리나라의 청년실업정책이 공공근로나 인턴제와 같은 비정규직 고용을 중심으로 실시되고 있는 현실을 반영하는 것이라 할 수 있다. 따라서 현행 청년실업 정책은 청년계층으로 하여금 안정된 직업경력을 확보하거나 정규직으로 전환을 촉진시키는 가교역할을 할 수 있는 고용정책으로 변화되어야 할 것이다.

• 대한조선학회지
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• 제8권1호
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• pp.67-94
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• 1971

Korean fisheries industry holds 57,255 boats amounting to 269,079 tons in gross as of the end of 1967. The boats of the size under 30G.T., about sixty-two per cent of the total in tonnage, are utilized in coastal and their contribution to the total production of Korean fisheries industry is estimated at over seventy-five percent. Hull forms and construction method of them are partly in transition stage to the western tradition from the oriental tradition, which employs the chine-type straight-framed section, and tick and wide wooden planking fastened on naturally bent timber frames. And only about a half of them are mechanized. About fifty-seven per cent, 7,525 boats amounting to 91,751 gross tons, of the coastal and inshore fishing boats are those of the size ranging 5G.T. to 30G.T., which are engaged mostly in draft-and gill-netting, angling, longlining, anchovy seining, squid fishing and set-netting. The important fishing boats forming main structure of the inshore fishing fleets can be classified as 5G.T.-class multi-purpose boats, 10G.T.-class angling/longlining boats and 20G.T.-class drift-/gill-netters mostly utilized in the east-sea, 15G.T.-class anchovy seiner in the south-sea-sea, 20G.T.- and 28G.T.-class stow-netters in the west sea. Each of the three sea regions, east, south, and west, of Korean water has distinctly different characters from one another in topography, geology and sea aspects, and consequently in marine resources, fishing grounds and fishing tactics desired. Hence, the finishing boats in each sea region have also their own characters in hull form, structural features, deck design and equipments. In this report, analyzing the characteristics of the existing inshore fishing boats ranging 5G.T. to 30G.T. in size from view points of naval architecture and engineering, the author made an integrated investigation of their characteristics, covering size and principal dimensions, hull form, deck design, structural features and mechanization, in close connection with the natural circumstances of Korean water and local techno-socio-economic problems, and, finally, made some suggestions for the rational improvement or modernization of the inshore fishing boats. Further details of the characteristics of Korean inshore finishing boats are referred to the drawings of them compiled by the author and given in the reference[23] listed at the end of this report.

• 한국시뮬레이션학회논문지
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• 제19권1호
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• pp.143-151
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• 2010

지문분류는 1:N 지문인식 시스템의 효율성을 높이는 단계로 지문의 매칭 시간 단축과 인식의 정확성을 높여주는 역할을 한다. 지문 각 클래스의 융선 패턴은 한 개 이상의 클래스와 중복되는 성질을 가지기 때문에 지문분류 작업은 어렵다. 또한 잡음을 많이 포함하거나 예외적인 입력 상태인 경우에도 분류 작업은 어려워진다. 본 논문에서는 다양한 품질의 지문을 효과적으로 분류하기 위해 지문의 방향특징을 이용해 확률 모델을 설계하고, 이를 최적화 하여 지문분류를 수행하는 방법을 제안하였다. 지문 융선을 픽셀단위로 탐색하여 방향 값을 산출하고, 산출된 방향 값을 일정 픽셀 단위로 병합하여 지문의 방향특징을 추출한다. 추출된 방향 특징을 이용해 확률론적 정보추출 및 인식 방식인 마코프 모델을 이용하여 지문의 클래스별 마코프 모델을 생성한다. 생성된 클래스별 마코프 모델의 상태전이 행렬을 분석하여 클래스별 분류 모델의 가중치 항목을 결정하고 유전자 알고리즘을 이용하여 지문분류 성능을 향상시킬 수 있는 최적의 수치를 찾아낸다. 유전알고리즘에 의해 최적화된 분류모델에 다양한 품질의 지문 데이터베이스를 적용하여 실험해 본 결과 최적화 되기 전의 분류 모델에 비해 우수한 분류성능을 보였다. 또한 실험에 사용한 다양한 품질의 데이터베이스를 분석해본 결과 제안한 방법은 특이점 유, 무 및 상태에 독립적으로 예외적인 입력상황의 지문에 대해 효율적으로 지분분류를 수행했다.

• International Journal of Control, Automation, and Systems
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• 제1권3호
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• pp.358-367
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• 2003

We consider discrete-time factorial Markov Decision Processes (MDPs) in multiple decision-makers environment for infinite horizon average reward criterion with a general joint reward structure but a factorial joint state transition structure. We introduce the "localization" concept that a global MDP is localized for each agent such that each agent needs to consider a local MDP defined only with its own state and action spaces. Based on that, we present a gradient-ascent like iterative distributed algorithm that converges to a local optimal solution of the global MDP. The solution is an autonomous joint policy in that each agent's decision is based on only its local state.cal state.

• 가정과삶의질연구
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• 제11권2호
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• pp.40-54
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• 1993

The purpose of this study was to examine the specific nature of early relationship between infant and father. The subject pool for the study consisted of 42 middle-class infant-father days. Infant's ages were 12 moths to 17 months. All were fullterm babies In order to assess the patterns of infant-father attachment each dyad was videotaped in the simulated Strange Situation of Ainsworth et al(1978). In order to assess the paternal sensiti-vity toward the infant's cue,. each dyad was also filmed for a 3-minute Questionnaire Situation Gratification of the Transition to Fatherhood. Also at home mothers completed a report on infant temperament using the Infant Characteristics Questionnaire. Among 42 infants 48% or 20 were classified as securely attached 38% or 16 as anxious-avoi-dant and 14% or 6 as anxious-resistant Using the discriminant function coefficients for combi-ning the paternal sensitivity scores 83% of the infants were correctly classified as A. B. C The patterns of attachment were not found to be significantly different in the paternal childhood experience for attachment relationship to his own parents. Degree of Difficulty and Gratification groups with respect to infant temperamental fussiness.

• 디지털산업정보학회논문지
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• 제9권3호
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• pp.39-48
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• 2013

Ontology has an important role in semantic web to construct and query semantic data. When system make changes to ontologies, questions arise about versioning of these changes. Applying this changes on a dynamic environment is even more important. To apply these changes, change specification method is needed. Early studies show RDF-based syntax for the operations between old and new ontologies. When several ontology versions can be used for some query, if possible, using possible newest version ontology with prospective use is best way to process the query. Prospective use of ontology means using a newer version of an ontology with a data source that conforms to a more recent ontology. In this paper, for prospective use of ontology version, structure of change specification of class and property through several ontology versions is proposed. From this, efficient adaptive ontology version selection for a query can be possible. Algorithm for structure of version transition representation is proposed and simulation results show possible newest version number for queries.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2005년도 추계종합학술대회
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• pp.1193-1196
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• 2005

In this paper, we presents a new multimedia service transmit method using IPv6. The IPv6 provides the address system of 128 bit and the address space which is infinite it provides. But it will not become the IPv4 and interchange not to be, it uses the DSTM Transition mechanism which will reach and the IPv4 center in the packet header the service type it will be able to support the service class of multi type (TOS) it secures the weak point of data transfer delay it puts a base in the IPv6. The efficiency of this proposed technique have been proven by MPEG-4 streaming video streaming of the IPv6 namely, 6Xtream embodied a order form/live streaming server and the client which it uses to be possible in base and real-time decoding method.

• 대한수학교육학회지:학교수학
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• 제4권3호
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• pp.415-433
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• 2002

The mathematics education community is seeking to change a teacher-centered class-room culture to a student-centered culture. However, the real transition is not easy, even for teachers who are eager and willing to teach differently. The challenge for teachers is to use the social structure of the classrooms to nurture students' development toward mathematical ways of thinking and communicating as well as their under-standing of mathematical concepts and processes. By introducing an elementary teacher's teaching practice and professional develop-ment along with her classroom episodes, this paper is to make strides toward an enriched understanding of the culture of the elementary mathematics classrooms in which students may have a lot of opportunities to develop conceptual under standing and math-ematical disposition. This paper first provides a detailed description of the classroom flow in terms of general social norms and sociomathematical norms in order to explore how the teacher and the students have established such a student-centered math-ematics microculture. This paper then analyzes the teacher's teaching approach and professional development.

• Journal of Astronomy and Space Sciences
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• 제31권2호
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• pp.101-120
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• 2014

The nature of the exotic stellar corpses which reincarnate by consuming their companion is reviewed. Apart from sucking life from their partners, they are actually eating the doomed companions away by their deadly and powerful particle/radiation beams. Such situation resembles that a female "black widow" spider that eats its mate after mating. These celestial zombies are called - Millisecond pulsars (MSPs). In this review article, I will focus on the effort of Fermi Asian Network (FAN) in exploring these intricating objects over the last five years. Two special classes of MSPs are particularly striking. Since Fermi Gamma-ray Space Telescope has started surveying the gamma-ray sky, the population of "black widows" has been boosted. Another dramatic class is so-called "redbacks" (Australian cousin of "black widows") which has just emerged in the last few years. These MSPs provide us with a long-sought missing link in understanding the transition between accretion-powered and rotation-powered systems. The strategy of hunting MSPs through mulitwavelength observations of the unidentified Fermi objects is also reviewed.

• 한국유통학회지:유통연구
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• 제2권1호
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• pp.59-85
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• 1997

The automobile industry in Korea has grown to the fifth in the world in terms of production capacity. In spite of the production growth, the marketing aspects such as distribution and customer service in the auto industry are still behind the world-class. Thus, the major purposes of this paper are as follows. The first is to analyze competitive structure of the industry and to compare distribution strategies of the major auto firms(Hyundai, Daewoo, and Kia). The second is to theoretically explain the transition from the vertical marketing system to the dealer system using transaction cost analysis. The third is to compare auto distribution channels in Korea with those in the U.S. and Japan. Finally, an optimal channel stucture in the auto industry is suggested after reviewing five alternative channel structures such as corporate-owned VMS, sales-specializing firm, multiplex system(VMS+limited dealer system), dual sales channel, and advanced dealer system. In the short-run, sales-specilizing firm was suggested as an optimal channel system to enhance customer satisfaction by integrating sales and customer service. In the long-run, advanced dealer system through regional differentiation was desirable for an optimal channel structure by organically integrating new car sales, used car sales, and after service to provide total marketing service to customers.