지진하중을 받은 구조물의 횡적보강에 관한 연구

박병권 한남대학교 1997 국내석사

치자 Genipin과 양이온성 아미노산을 이용한 모발염색 연구

박병권 아주대학교 산업대학원 2011 국내석사

단계적 어휘 학습지도가 중학교 국어 학습에 미치는 영향

박병권 전주대학교 1998 국내석사

Korean language teaching is a subject which enables the students to use Hangul. It is no exaggeration to say that the ability to use a language depends on the exact understanding of its vocabulary and the amount of it. The knowledge of vocabulary plays an important role in reading. Reading helps students to learn individual words and the relation between them and grasp the meaning of words in chunks. Using research I developed a model of vocabulary teaching based on my documentary studies. I taught the vocabulary systematically and in stages to help students expand their vocabulary which, I believe, is the most important aspect of reading and speaking a language. The teaching method of vocabulary in stages consists of four steps. They are puzzle solving, word association, understanding and generalizing. I explored the following methods to introduce vocabulary in class: To know the verbal meanings by puzzle solving; to write analogies, derivatives, and compounds with word association; to write antonyms, words containing diverse meanings and grasp the meaning from the context by understanding; to write short sentences and paragraphs using generalizations. I applied these methods to real life teaching-learning situations. Later I calculated questionnaires and the subject scores. The results of the questionnaires concluded that ① Students' interest in the subject improved and their attitude in class became positive. ② Students depended on the reference books when they met with strange words in the process of reading words before but they tried to look up dictionaries later. ③ The number of students who tried to use the words that they were studying increased. ④ Almost all the students recognized the neccesity to study vocabulary. And comparing the subject scores, the average of the research group was much higher than that of the comparative group. It indicates that a teaching method which introduces vocabulary in steps according to difficulty has a more favorable influence upon the students acquisition of Korean vocabulary than the traditional one. Students showed great interest in the words study using puzzles. in conclusion I believe that teaching vocabulary by steps allow students to grasp the meaning of words. Overall interacting with the language could contribute to the improvement of Korean language learning. The materials used in this study can be utilized in class for teaching words for they were made according to the units of the current textbook.

러프집합에 기반한 클래스 재사용 결정 알고리즘 생성 모델

박병권 조선대학교 2000 국내박사

Object-oriented development produces more extensive and independent reuse components and constructs the new application software by organizing them well. It, therefore, be able to realize concept of the software reuse well. Research on identifying the reusable components must be proceeded in order to enhance the reuse of object-oriented components, which are well-refined unit. However, the existing researches on identifying the object-oriented components have the following problems. First, it is rather suitable to function-oriented components to measure and decide the reusability of the components based on only an attribute. Second, since the components developed for the purpose of reuse tend to be more complex and large than one developed for the special purpose, metrics for identifying the reusability of the components must be revised. But it is difficult for the quantified metrics to cope with the above requirements. Third, they don't cope with the change of the external and internal environment actively. Therefor, in this paper, we proposed a model for generating an algorithm that can decide the reusability of the object-oriented components by coping with the change of environment actively. We generate an algorithm for the reusability decision of the object-oriented components based on the existing function-oriented and objected oriented metrics, which are proven in industry field In this paper, the process for generating the minimum reusability decision algorithm is the below. In the first step, we construct the KRS(Knowledge Representation System) classifying components base on the classification criteria of them. In the next step, we perform the knowledge reduction that eliminates the dispensable attributes or equivalence relation from the KRS. This process leaves only the necessary parts by eliminating the unnecessary knowledge from the knowledge base. The reduced algorithm becomes simpler by eliminating the unnecessary attributes from each decision rule. The reduced rules become the new rules composed of only the necessary attributes to each rule We generate an algorithm for the minimum reusability decision based on the new rules. Since this model is based on the information extracted from the existing reused components, it can copes with such change of internal and external software environment as follows: e.g, change of identification knowledge in existing metrics, insertion and deletion of new components, etc.

순수전단을 받는 판형복부판의 극한전단거동에 관한 실험연구

박병권 동국대학교 대학원 1997 국내석사

The thickness of web plate is generally much smaller than that of the flange. Consequently, the web panel buckles at a relatively low value of the applied shear loading. The webs are often reinforced with transverse stiffeners to increase the buckling strength and the web design involves finding a combination of an optimum plate thickness and stiffener spacing that renders economy in terms of material and fabrication cost. The design methods of plate girder webs are divided into two categories' allowable stress design and strength design based on ultimate strength including the post-buckling. For the determination of the ultimate shear strength of a plate girder web, it is required to accurately estimate not only the post-buckling strength but also the buckling strength. According to Lee et al. (1996), all of currently existing failure theories of shear web panels have not considered bending stress components resulting from out-of-plane deformation which take place after the buckling. The exclusion of the bending stress effects may lead to overestimation of the post-buckling strength. As far as the shear buckling strength, the buckling coefficient has been usually obtained under the assumption that web panels are simply supported at the junction between the flange and web. This assumption result in too conservative design when realistic boundary condition is rather closer to a clamped support. In present study, an experimental investigation is carried out in order to find out the ultimate behavior of plate girder web under shear and to verify Lee et al.'s proposal and the results are compared with existing failure theories. From tests of various plate girder specimens, it is found that the boundary condition at the flange-web juncture is rather close to a fixity and considerable out-of-plane bending stresses develop at failure stages. It seems that the failure behavior shown in present tests agrees well-with the study by Lee et al. Throuh comparisons of the ultimate shear strength, it was also found that design equations suggested by Lee et al. is capable of predicting not only the individual strengths but also the overall ultimate shear strength.

DLTS 법을 이용한 InGaN/GaN 양자우물 구조의 Trap Energy 연구

朴昞權 忠南大學校 大學院 2011 국내석사

1962년 최초의 가시광선 발광 다이오드(light emitting diode, LED) 가 개발된 이래 박막 성장 기술 및 소자 기술의 발전에 힘입어 질화물계 반도체 다이오드의 성능은 급속도로 발전하고 있다 [1,2]. GaN 을 기반으로 하는 Ⅲ-Nitride 계열 반도체는 넓은 에너지 간격을 갖는 직접 천이형 반도체이며, GaN (3.4 eV)에 AlN (6.2 eV)와 InN (0.7 eV) 의 이종접합을 통하여 자외선 영역에서부터 적색 영역 등 총 천연색을 구현할 수 있다 [3,4]. 또한 기존의 형광등과 백열들보다 높은 에너지 효율과 긴 수명으로 차세대 디스플레이어와 일반조명으로 관심 받고 있다 [5,6]. 이러한 GaN 계열 LED에서 양자우물 내에서 carrier 의 거동과 결함에 대한 연구는 매우 중요하다. 최근 연구되고 있는 경향은 n-GaN 사이에 InGaN 이 삽입되어 있고 Schottky 접합 구조로서 바이어스에 따른 양자우물 안의 carrier 거동에 관한 연구가 주로 이루어지고 있다 [7]. 다른 한편으로는 c-평면 기판에 성장된 양자우물 시료와 m-plane 기판 위에 성장된 시료를 통하여 polarization 의 존재 여부에 따라 양자우물의 특성을 비교한 실험이 보고되었다 [8]. 하지만 이 구조 역시 Shottky 접합을 통한 연구 이다. P-I-N 접합을 하였을 때 결함과 양자우물의 특성 과 주기수가 늘어남에 따라서 발생되는 현상에 대한 연구는 적은 편이다. 따라서 본 연구는 I-층에 InGaN/GaN 양자우물 구조가 들어간 P-I-N 접합에 대하여 연구를 진행하였다. 주기수가 1주기와 2주기 시료를 가지고 비교 분석 하였으며, 이들 시료에 대하여 current-voltage ( I-V ), capacitance-voltage ( C-V ), deep level transient spectroscopy ( DLTS ), photoluminescence ( PL ) 을 이용한 특성 변화로부터 P-I-N 접합에서의 trap energy 에 대하여 연구 하였다. After their initial development, light emitting diodes (LEDs) based on gallium nitride have found many strategic applications, Recent improvements in technologies allowed LEDs to be used in signal systems and in few limited illumination applications. Advanced research now shows a bright future for solid-state lighting as the next generation of light sources for general illumination from, domestic to commercial applications. Solid-state lighting is increasingly used in a variety of application because it offers many benefits, including long life, reduced energy consumption, high efficiency, small dimensions, flexibility, fast response and high brightness, visibility and long life are important. In this study, we have investigated the effect of external electric field on deep level defects in single quantum well(SQW) and two quantum wells(2QW) bule light emitting diode embedded in p-i-n structure using capacitance-voltage and deep level transient spectroscopy (DLTS) techniques. Two distinct peaks related to defect and quantum well were observed in DLTS spectra of 2QW at different bias conditions. From the arrhenius plot, the estimated activation energy is 0.371 eV (peak2). Activation energy of Peak1 is 0.26 eV form a paper. The behavior peak1 is independent of bias and might be originated from a typical defect state. The peak corresponding to peak2 is shifted to higher value with reducing bias. Hence, the activation energy of peak2 can be explained by the increase of effective barrier height. The numerically simulation results of the barrier heights were in good agreement with the experimental results. In DLTS spectra of SQW, one peak related to quantum well was observed at different bias conditions. From the arrhenius plot, the estimated activation energy is 0.388 eV. Activation energy of SQW is higher than 2QW. These results can be explained in the therms of the QCSE .

무전해 Cu 도금 처리에 의한 ACF의 VOC 흡착 특성 향상

박병권 忠南大學校 大學院 2017 국내석사

Activated carbon fiber(ACF) which was plated by electroless copper improved the adsorption property of toluene and benzene gas among volatile organic compounds(VOCs). The pore characteristics and surface properties of these activated carbons were evaluated by BET and XPS and the adsorption property and removal efficiency of toluene and benzene gas was investigated by gas chromatography. The breakthrough time of electroless copper plated ACF was increased each about 50% and 25%, respectively compared to that of did not plated ACF when the toluene and benzene gas of 100 ppm was flowed at a flow rate of 300 cm3/min. Electroless copper plated ACF of 0.1 g totally adsorbed toluene and benzene gas in 100 ppm to 100 % during the adsorption time in each 14 h and 27.5 h. These results can be used as a electroless copper plated technology or removal of carcinogenic materials such as toluene and benzene.

비균일 스트립전송선로를 이용한 방향성 결합기에 관한 연구

박병권 忠南大學校 大學院 1983 국내석사

In this paper, we have been presented the analyzing and designing method of the directional coupler using non-uniform strip transmission line. The desinged coupler have much improved coupling characteristics compared with coupler using uniform strip transmission line near the center frequency. The design methods presented in this paper are as follows. (1) Find the impedance Zoe in the even mode and Zoo in the odd mode. (2) Take the Zoe and Zoo satified following conditions. Zoe?Zoo Zoe?Zoo=z2/0 (3) Take the length ℓ of the directional coupler satifing maximum coupling condition.(ℓ=ㅅ/4) (4) Take the Zoe(z) and Zoo(z)from desired coupling coefficient. Design the directional couple of the desired shape using 5(space between transmission) and W(width of the transmission line)calculated from Zoe(z)and Zoo(z).

분산 체제에서 최적 부하 균형에 관한 연구

박병권 朝鮮大學校 大學院 1990 국내석사

The number of loads standing by in each node can be different in the homogeneous type of distributed system. Some nodes have too many loads, while the others have few and so the waisting their own sources can occur. This paper in this case aims that in other to make the best use of sources through the equal distribution of loads between nodes, load-balancing is made by using the optimum load-balancing algorithm, and that high communication costs, which are the handicaps of dynamic algorithm, are reduced to the minimum. Also, this paper defines the matters to be considered in the design of algorithm, and analyzed and estimated the most suitable load - balancing algoritm through the implementation

進路敎育 프로그램이 工業界 高等學生의 進路意識과 自我槪念에 미치는 效果

朴昞權 충남대학교 1998 국내석사

본 연구는 공업계 고등학생들에게 진로교육 프로그램을 활용한 집단지도를 실시하였을 때, 그들의 진로의식과 자아개념에는 어떤 변화가 생기는지 그 효과를 알아보고자 수행되었다. 연구의 목적을 구체적으로 제시하면 다음과 같다. 첫째, 진로교육 프로그램을 활용한 집단지도가 공업계 고등학생의 진로의식에 미치는 효과를 밝힌다. 둘째, 진로교육 프로그램을 활용한 집단지도가 공업계 고등학생의 자아개념에 미치는 효과를 밝힌다. 본 연구의 대상은 대전광역시 소재 K 공업 고등학교 2학년 2개 학급으로서, 각 학급별로 실험집단(45명)과 통제집단(43명)으로 임의 배정하였다. 실험집단에게 진로교육 프로그램을 활용한 집단지도를 1998년 4월 25일부터 1998년 6월 26일까지 주 2회씩 15회 실시하였다. 본 연구에 사용된 측정도구로는 임인재(1994)의 중·고등학생용 진로의식 발달 검사와 정원식(1995)의 자아개념 검사를 사용하였다. 실험처치에 사용한 진로교육 프로그램은 진로교육의 주요 영역을 고려하여 15차시 분량의 지도안과 학습자료로 구성하였다. 최종적으로 수집된 자료(실험집단 40명, 통제집단 42명)의 통계처리는 SPSSWIN7.5 프로그램을 사용하였고, 설정된 연구가설들을 검증하기 위해 t검증과 공변량 분석을 하였다. 본 연구에서 얻은 결과를 기초로 하여 다음과 같은 결론을 내릴 수 있다. 첫째, 진로교육 프로그램을 실시하면 공업계 고등학생의 진로의식이 향상된다. 두 집단간의 변인에 상관없이 진로교육 프로그램은 진로에 대한 총괄적인 성숙도를 나타내는 진로의식발달을 향상시킨다. 특히 진로의식발달 하위영역 중 확신성, 진로정보 처리 능력, 현실 타협성 등에 긍정적 효과를 미친다. 둘째, 진로교육 프로그램을 실시하면 공업계 고등학생의 자아개념이 긍정적 방향으로 변화된다. 특히 자아개념 하위영역 중 신체적 자아, 도덕적 자아, 성격적 자아 등에 긍정적 효과를 미친다. This study was performed to find out the effect of group career guidance by career education program on technical high school students' career consciousness and self-concept. More specifically, the purposes of this study are as follows: First, to find out the effect of the career education program on career consciousness of technical high school students. Second, to find out the effect of the career education program on self-concept of technical high school students. The samples of this study consist of 88 2nd-grade students selected from K technical high school in Taejon city. They were divided into two groups, an experimental group and a control group. Students in the experimental group were taught by career education program for a two-month period. Students in control group were given pre-and post-tests only. The career education program was performed for 50 minutes at a time, twice a week, during a two-month period; total 15 times. The instruments used for this study were the standardized Career Consciousness Development Test (Rim, 1994) and the standardized Self-Concept Test (Jeong, 1998). The data were collected on July, 1998 and analyzed by using SPSS WIN7.5 program. Statistical analysis to test the hypotheses were t-test and ANCOVA. The conclusion based on the results of this study could be as follows: First, the group career guidance of career education program has improved the career consciousness, especially in the sub-domain confidence, ability to treat career information, and compromise. Second, the group career guidance of career education program has the positive effect on the self-concept, especially in the sub-domain physical self, moral self, and personal-self. It is concluded that the group career guidance of career education program has the positive effect on the career consciousness and the self-concept of students in the technical high school.