• Title/Summary/Keyword: 환경자기

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Dynamic Impacts of Price and Income Variables on Paper Demand and Supply (종이 수급에 가격과 소득 변수가 미치는 동태적 영향 분석)

  • Kim, Dongjun
    • Environmental and Resource Economics Review
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    • v.19 no.2
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    • pp.283-301
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    • 2010
  • This study estimated the paper demand and supply using VAR model. And the variance decomposition and impulse response were analyzed using the model. In the model of paper demand, the own price change accounts for about seventeen percent of variation in the demand, and the gross domestic product change accounts for about twenty eight percent of variation in the demand. And the impacts of a shock to the own price and gross domestic product are significant for about six months on the demand for paper. In the model of paper supply, the own price change accounts for about twenty nine percent of variation in the supply, and the pulp price change accounts for about twelve percent of variation in the supply. And the impacts of a shock to the own price and pulp price are significant for about six months on the supply of paper.

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Software Development for the Visualization of the Orientation of Brain Fiber Tracts in Diffusion Tensor Imaging Using a 24 bit Color Coding

  • Jung-Su Oh;In Chan Song;Ik-Hwan Cho;Jong-Hyo Kim;Kee Hyun Chang;Kwang-Suk Park
    • Journal of Biomedical Engineering Research
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    • v.25 no.1
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    • pp.43-47
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    • 2004
  • Interests in human brain functionality and its connectivity have much frown up. DTI (Diffusion tensor imaging) has been known as a non-invasive MR) technique capable of providing information on water diffusion in tissues and the organization of white matter tract. Thus. It can provide us the information on the direction of brain fiber tract and the connectivity among many important cortical regions which can not be examined by other anatomical or functional MRI techniques. In this study. was used the 24 bit color coding scheme on the IDL platform in the windows environment to visualize the orientation of major fiber tracts of brain such as main association, projection, commissural fibers and corticospinal tracts. We additionally implemented a color coding scheme for each directional component and FA (fractional anisotropy), and used various color tables for them to be visualized more definitely. Consequently we implemented a fancy and basic technique to visualize the directional information of fiber tracts efficiently and we confirmed the feasibility of the 24 bit color coding scheme in DTI by visualizing main fiber tracts.

A Study of Career-interrupted Women's Vocational Training and Career Management System for NCS Diffusion (NCS 확산을 위한 경력단절여성 직업교육과 커리어관리 시스템에 관한 연구)

  • Suh, Yong-Han;Toshihara, Yabu
    • Management & Information Systems Review
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    • v.36 no.2
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    • pp.207-221
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    • 2017
  • The career management concept is changing rapidly in the career management field in recent years. It becomes very difficult to have a lifetime employment within the same firm. As there is career interruption that is pervasive phenomenon in the women's career management area, many academics and practitioners have been interested in it. The purpose of this study was to examine the influence of women's career-interruptions as the effective career strategy on career development actors and career success. To test the effects of the proactive career management of career-interrupted women, data were divided into two groups including proactive career management group and general career management group based on whether career-interruptions are voluntary or not. The results showed that the proactive development actors was significantly different depending on women's proactive career management and general career management group. First, proactive-career women were more self-directed to learn and have a significant impact on developing skills through training. Second, the career successes were not significantly different depending on and general career management group.

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The development of web based teaching and learning system for the efficient operation of "professional learning activity" model ("전문가 학습 활동"모형의 효율적 운영을 위한 웹 기반 교수.학습 시스템 개발)

  • Park, Soon-Il;Goh, Byung-Oh
    • Journal of The Korean Association of Information Education
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    • v.8 no.3
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    • pp.293-303
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    • 2004
  • To follow in change and the development which circumference environment of education are quick even from scene of education students form the structure of knowledge themselves, the place where own lead studying of personal small group studying is emphasized, here upon specialist learning activity there is a wild possibility in the model which is suitable. But, studying of the learning paper was most center mainly the specialist learning activity of existing, it solves a learning problem at unit hour to, the hour was too insufficient to solve and it became plentifully at block time. But, this is to the curriculum operation and or the schedule operation it is when trying to consider the intensive degree of learning the elementary student, a problem point there is. It grasps the strong point and a weak point of specialist learning activity model of existing from the research which consequently, it sees and it applies more efficiently from web base study to establish the instructional strategy for, it composed the modules which strengthen the interaction of learning subject for. Also, unit macro learning and block time learning in order to do to become accomplished at web with studying problem, it will be able to solve inside unit hour in order, specialist teaching-learning system based on the web. It developed, after applied in the electrification S elementary school 5 grades which will reach the result, it analyzed.

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Synthesis, Characterization and ESR Studies of New Copper(II) Complexes of Vicinal Oxime Ligands (Vicinal Oxime 리간드의 새로운 구리(II) 착물에 대한 합성, 특성 및 ESR 연구)

  • El-Tabl, Abdou S.;Shakdofa, Mohamad M.E.;El-Seidy, Ahmed M.A.
    • Journal of the Korean Chemical Society
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    • v.55 no.4
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    • pp.603-611
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    • 2011
  • Ethoxylacetyl oxime ligands [HL, (1) and $H_2L^1$, (3)] react with copper(II) acetate monohydrate yield octahedral and square planar complexes, respectively. The complexes have been postulated due to elemental analyses, IR, UVVis. spectra, magnetic susceptibility, conductivity and ESR spectra. Molar conductance of the complexes in DMF indicates a non-ionic character. The ESR spectra of [$(L)_2Cu(H_2O)_2$], (2) complex at room temperature and 77K are characteristic of an axial symmetry ($d_{x2-y2}$) with covalent bond character and have a large line width typical of dipolar interactions. However, [$(L^1)Cu$], (4) complex in the solid state showed spectra of marked broadening and loss of hyperfine splitting confirming spinexchange interactions between the copper(II) sites. The spectrum of the doped copper(II) complex at room temperature showed super-hyperfine splitting from coordinated nitrogen atoms and it has an axial type ($d_{x2-y2}$) with covalent bond character and an essentially square-planar arrangement around the copper(II) ion. The spectrum of [$(L^1)Cu$], (4) in frozen methanol at 77K was characteristic of the triplet state of a dimer species and the distance found between the two copper(II) centers was calculated and is equal to 4.8 ${\AA}$.

A Grounded Theory Approach on the School Dropout of Adolescents in Korea (청소년의 학업중퇴 적응과정에 대한 현실기반이론적 접근)

  • Park, Hyun-Sun
    • Korean Journal of Social Welfare
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    • v.53
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    • pp.75-104
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    • 2003
  • This study was performed to analyze the process and develop the pattern of school dropout in the context of the Korean educational systems. Participants were 30 adolescents experiencing dropout one more times and their age ranged from 16 to 23. A major category derived and analysed from a grounded theory method of Strauss and Corbin(1990). The qualitative analysis indicated that dropout is contradictory experiences in Korea. Because it is emancipation from various distress of school systems as well as loss of various benefit as students, Main causes of dropout were identity problems, school frustrations(failure in school achievements), environmental disadvantaged and delinquencies. Sometimes these various causes are emerged at the same time. Most important condition of context which was decided was whether dropout was voluntary and considered. After dropout from school, it was important if there were resources such as emotional and informative supports. Especially informative support was critical to adjust after dropout. Dropout experience was divided largely into 4 patterns such as type of 'searching the identity', 'being disorganized', 'escaping' and 'frustration'. In chronological analysis resulted in 4 stages including 'stage I. loss of motivation', 'stage II. escaping from school', 'stage III. trial and error', 'stage IV changing the meaning of dropout in the life.

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A Study on the Infusion of Public Administrative Information Systems: Focusing on the Social Security Information System (공공행정 정보시스템의 내재화에 관한 연구: 사회보장정보시스템을 중심으로)

  • Park, Sun-Mi;Hwang, K.T.
    • Informatization Policy
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    • v.25 no.2
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    • pp.46-66
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    • 2018
  • This research explores the factors affecting infusion of public administrative information systems(IS) and analyzes its impact on work performance. For this purpose, the factors affecting the infusion of IS are classified into voluntary and involuntary motivations based on the self-determination theory that explains individual motivations. As factors for voluntary motivation, performance expectancy, personal innovativeness, and organizational citizenship behavior are proposed, while government influence, competitor influence, and the top-level management influence are proposed as factors for involuntary motivation. The analysis shows the voluntary motivation factors-performance expectancy, personal innovativeness, and organizational citizenship behavior-do affect infusion of IS, whereas the involuntary motivation factors-government influence, competitor influence, and the top-level management influence-have no statistically significant impact on the infusion of IS. The relationship between infusion of IS and work performance is found significant. While individuals are unable to decide on the adoption of IS in an involuntary environment such as in the case of using the public administrative IS, the results show that the factors related to individual autonomy have an important role in extended, active usage of IS beyond the mandatory level.

A Study on the Spatial Patterns and the Factors on Agglomeration of New Industries in Korea (신산업의 공간분포 패턴과 집적 요인에 관한 연구)

  • Sa, Hoseok
    • Journal of the Economic Geographical Society of Korea
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    • v.23 no.2
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    • pp.125-146
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    • 2020
  • There is an increasing need to foster new industries at the local level. This study aims to analyze the spatial patterns of new industries in Korea from 2007-2017 and to figure out its determinants of agglomeration in 2017. Through this study, it is found that new industries are unevenly distributed around Seoul Metropolitan Area(SMA). The regional disparity between SMA and non-SMA is prominent. Furthermore, new industries represent a strong spatial positive autocorrelation, showing a strong concentration on a few regions in Korea. This study explores the determinants on agglomeration of new industries with spatial statistical model. From the results of spatial error model, it is indicated that the number of graduate students, the ratio of technology based start-ups, and the number of elementary, middle, and high schools have a significant effect on new industries. In addition, the specialization and the diversity of industrial structure on knowledge-based manufacturing industries and knowledge-based service industries have been statistically significant. This study provides implications that non-SMA needs policies with respect to attracting talented people, developing human resources, and improving regional environment in order to improve regional competitiveness in promoting new industries.

A Study on Spatial Smoothing Technique for Angle of Arrival Estimation of Coherent Incoming Waves (코히어런트 입사파의 도래방향 추정을 위한 공간평균법의 개선에 관한 연구)

  • Jeong Jung-Sik
    • Journal of Navigation and Port Research
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    • v.29 no.5 s.101
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    • pp.403-408
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    • 2005
  • The techniques of estimating angle of arrival(AOA) have played a key role for enhancement of wireless communications using array antennas. Among those techniques, the superresolution algorithms, such as MUSIC and ESPRIT, calculate the covariance matrix of the array output vectors which are observed at the array antennas, and then by using eigen-decomposition of the covariance matrix, they estimate AOAs of the received signals with high accuracy. However, superresolution algorithms based eigenvalue decomposition fails to estimate AOAs under multipath environments. Under multipath environments, it is difficult to estimate AOAs of the received signals due to coherency and high-correlation. To resolve coherent signals, the covariance matrix is calculated by using the conventional spatial smoothing technique, and then the techniques based on eigen-descomposition is applied. The result of the conventional spatial smoothing technique, however, is obtained at the cost of losing effective spatial aperture. Moreover, the conventional technique ignores any information in the cross-correlations of the array outputs the subarrays. As the result, the performance for AOA estimation is degraded. In this paper, we propose a new spatial smoothing technique, which consider the cross-correlation for subarrays. By computer simulation, the AOA estimation performance of the proposed method is compared with the conventional method and evaluated.

Image making Strategy in Digitalized Environment (디지털 환경하에서 이미지 전략 방안)

  • 홍지원
    • Archives of design research
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    • v.12 no.4
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    • pp.327-337
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    • 1999
  • As the computer technology grows so fast, it can affect the human life in every fields. Specially, advent of Digital epoch is changing human life completely. In the past, people should get the information through the mass-media. But these days we can produce and provide some information through new media, Internet. In other words, two-ways communication like internet make individual be the producer in the information stream. Especially, net generation is different form the old generation and they want to express themselves distinctively from others. Nevertheless, they can't have the chance to express their identity properly and only they try to satisfy their needs by consuming special goods. In this article, I want to suggest a program that an individual can express their own identity and image. I will transform CIP (Corporate Information Program) and adjust it to an individual case. This is different from the previous study that emphasize the external factor figure, etc. First, we will find the MI(mind identity) and the BI(behavior identity). Second, we will present the VI(visual identity) by using two factors. - MI, VI. Finally, we will analyze them totally and make the PI(personal identity ) that can express their own identity and philosophy well. Through this programs, they can express themselves well and get the chance to think creatively. I am sure this program will have more implications about image strategy.

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