• 한국전자통신학회논문지
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• 제13권5호
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• pp.1043-1050
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• 2018

본 논문은 인지 무선(CR, Cognitive Radio) 네트워크에서 우선 사용자(Primary User)의 존재 유무를 2차 사용자(Secondary User)가 결정하기 위하여 협력 센싱을 사용하는 환경에서 스펙트럼 센싱의 감지 성능을 높이기 위해 강화 학습(Reinforce learning) 기반으로 최적의 인지 무선 사용자 선택하는 협력 센싱 방안을 제안한다. 협력 센싱을 통해 파악한 전역 센싱 결과와 인지 무선 사용자의 센싱 결과 간의 유사도에 따라 정확도가 높은 사용자를 파악한다. 이 정확도를 강화학습의 보상으로 사용하여 협력 센싱을 수행할수록 전역 결정과 일치하는 센싱 정보를 전송하는 사용자를 선택할 수 있다. 실험 결과 제안한 기법이 기존 협력 센싱 대비 향상된 스펙트럼 감지 성능을 보임을 확인할 수 있다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 춘계학술발표회 논문집(I)
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• pp.82-85
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• 2006

In this study, the fatigue tests were performed on a series of reinforce concrete beams with type of aggregate to investigate the fatigue behavior. The four point loading system is used in the fatigue tests. In these tests, relations between the repeated loading cycles and mid-span deflections, number of repeated loading cycles when specimen was fractured were observed. On this basis, the mid-span deflections, the crack growth and failure mode of beams were studied. The result of tests, reinforce concrete beams with recycled aggregate were about similar failure mode with natural aggregate concrete beam.

• 소성∙가공
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• 제23권5호
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• pp.297-302
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• 2014

The current paper introduces work that was conducted during the development of a stamping die for a reinforce center pillar made from high strength steel. In the current study, the Bauschinger effect on the springback analysis was studied by comparing simulation results with real panels, which are currently in production. For a complicated part shape, quantitative measurements of the deformed shape are not easy in general to obtain. An adjustment procedure of the shape data for some chosen sections has been suggested to improve the accuracy of the quantitative measurements. The results show that the kinematic hardening model provides more accurate results.

• 현장농수산연구지
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• 제22권2호
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• pp.37-50
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• 2020

The purpose of this study is to identify professional development needs of Extension professionals and to evaluate competencies essential to be a successful Extension professional. For the purpose of this study, quantitative capacity data of extension professionals were collected from the survey instrument based on Extension Professional Evaluation Scale in Utah state university. Descriptive statistics, mean difference analysis, IPA(importance-performance analysis) analysis were used to analyze the data. The main results of the study are as follows. First, it is necessary to first reinforce education on specialized technical capacity among the three extension capacity areas. The current status of the professional capacity of extension professionals in the three areas was found to be at the average level, and the level of professional technical capacity was relatively low. In addition, the importance was evaluated that professional technology capacity is more important than the project development/evaluation capacity and communication capacity. Second, Second, in order to reinforce communication capacity, it is necessary to strengthen education on 'development of joint educational materials with colleagues'. Third, in order to reinforce project development/evaluation capacity, it is necessary to strengthen education on 'project planning'. In the IPA analysis results, the importance was high, but the capacity with relatively low performance were analyzed as 'project planning'. Fourth, in order to reinforce professional technical capacity, it is necessary to develop an education program for 'crop expertise' first. In the IPA analysis results, the importance was high, but the competencies with relatively low performance were analyzed as 'crop technology expertise'.

• 한국지역지리학회지
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• 제22권3호
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• pp.730-744
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• 2016

본 연구는 중등학교 세계지리 수업에서 여행기를 활용하여 가치와 태도 같은 정의적 영역을 보완하는 방안을 모색하고자 한다. 현행 세계지리 교과서의 학습활동은 거의 지식 전달 중심의 인지적 영역의 활동에 편중되어 있다. 이는 일차적으로 교육과정에 제시된 성취기준이 인지적 영역에 치중되어 있기 때문이라 할 수 있다. 여행기는 저자가 직접 해당 지역을 여행하면서 체험하고 관찰하고 느낀 점을 기록한 생생한 현장보고서이며 내러티브 텍스트의 일종이다. 세계지리 수업에서 여행기를 활용함으로써 맥락적 이해를 통해 편견을 감소시키고, 자기 성찰을 통해 내면적 성숙을 도모하며, 인식의 전환을 통해 통념을 해체하는 등의 정의적 학습 효과를 기대할 수 있다. 이는 지구상의 평화와 공존, 그리고 협력을 추구하는 세계시민교육의 핵심 가치와도 부합하는 것이라 할 수 있다.

• 복식
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• 제58권8호
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• pp.120-136
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• 2008

This study examined sewing methods used to reinforce the opening of clothes of the Joseon period. Through the analysis of a total of 117 clothing items of the Joseon period, the following results were obtained. 1. Most costumes of the Joseon period had the opening. The purpose of the opening was to allow one to put on and take off a costume, act comfortably, and turn a costume Inside out. The opening was located on the Side, Conte. Back, fgwi(Side opening of pants), Wristband, Armhole, and Godae(the bark part of the collar). 2. As the opening tended to get easily worn out, it was often reinforced. The 1911owing three methods were used to reinforce the opening of clothing items of the Joseon period: a method to attach a cloth such as Dang, Binding, and Badae; a method using a variety of knots; and a method by sewing stitches such as a sort of cross stitch called Satteugi, Prick stitch, and Loop. 3. The most frequently used reinforcing method was the one that used a knot(34 items), followed by the one by sewing Satteugi(27 items), and the one using Dang(25items). The most frequently detected location of the opening was Side(59 items), followed by Agui(37 items), Wristband(19 items), and Center Back(13 items). 4. The reinforced opening made a costume more endurable and elastic, decorative and neat.

• 수산해양교육연구
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• 제22권4호
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• pp.576-588
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• 2010

The goal of this research was to survey a method to reinforce the efficient political function for lifelong learning when Busan metropolitan city promotes lifelong policy. To achieve this goal, the survey to reinforce the political function for lifelong education was carried out on persons in charge of lifelong education in Busan metropolitan city. The results are as follows: First, they showed high degree of perception on lifelong policy and business. Second, on a question about how much the tasks to promote lifelong education presented by our nation are needed, they answered that concrete agenda for an aging society is needed and a necessary institute to invigorate it is lifelong learning institute. Third, they answered that the policy which is necessary to be implemented as soon as possible is the development education for vocational competency, and the ratio of the perception which requires to hire education experts for life long education was high.

• 콘크리트학회지
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• 제20권5호
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• pp.12-21
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• 2008

• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2005년도 춘계학술대회
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• pp.51-71
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• 2005

Performance measurement systems based on the principle that "if you can't measure it, you can't manage it" reinforce a short-term culture by focussing on tangible outputs. Instead, the focus of organisations should be on sustainable long-term performance through continuous systemic improvement. To establish and reinforce behaviours that drive systemic improvement, measurement and reporting systems need to be de designed to re-enforce work to role behaviour by managers. This paper discusses this concept and how it is being applied in practice through an ongoing action research project.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2002년도 춘계학술발표대회 논문집
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• pp.81-84
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• 2002

An approach for predicting the effective thermal conductivities of fiber-reinforce composite has been developed based on a thermal-electrical analogy. The unit cell of the composite laminate is divided into regular volume elements and the material properties have been given to each element. By constructing the series-parallel thermal resistance network, the thermal conductivities of composite both in-plane and out-of-plane direction have been predicted. Graphite/Epoxy composite is used for a balanced plain-weave composite laminate. By comparing the predicted results and the previous works, good agreement has been found.