• Title/Summary/Keyword: Art Activity

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An Energy-Efficient 64-bit Prefix Adder based on Semidynamic and Bypassing Structures

  • Hwang, Jaemin;Choi, Seongrim;Nam, Byeong-Gyu
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.15 no.1
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    • pp.150-153
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    • 2015
  • An energy-efficient 64-bit prefix adder is proposed for micro-server processors based on both semidynamic and bypassing structures. Prefix adders consist of three main stages i.e. propagate-generate (PG) stage, carry merge (CM) tree, and sum generators. In this architecture, the PG and CM stages consume most of the power because these are based on domino circuits. This letter proposes a semidynamic PG stage for its energy-efficiency. In addition, we adopt the bypassing structure on the CM tree to reduce its switching activity. Experimental results show 19.1% improvement of energy efficiency from prior art.

Production of Azadirachtin from Plant Tissue Culture: State of the Art and Future Prospects

  • Prakash, Gunjan;Bhojwani, Sant S.;Srivastava, Ashok K.
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.7 no.4
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    • pp.185-193
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    • 2002
  • With Increasing awareness towards environment-friendly and non-toxic pesticide azadirachtin obtained from neon tree (Azadirachta indica) is gaining more and more importance. Its broad-spectrum activity, Peculiar mode of action. eco-friendly and non-toxic action towards beneficial organisms has offered many advantages over chemical pesticides. All currently use commercial formulations based on azadirachtin contains azadirachtin extracted from seeds of naturally grown whole plants which is labour intensive process depending upon many uncontrollable geographical and climatic factors. Plant tissue culture can be a potential process for the pro-duction, offering consistent, stable and controlled supply of this bioactive compound, However the research on tissue culture aspects of production are in preliminary stage and requires culture and process optimization for the development of a commercially viable process. This review states the present status and future challenges of plant tissue culture for azadirachtin production.

The Actualizatoin of e-Community and Change Management in Higher Education (대학의 e-커뮤니티활성화와 변화관리)

  • Kim, Se-Ihn
    • The Journal of Information Technology
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    • v.8 no.2
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    • pp.1-16
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    • 2005
  • In high education, knowledge is the very important resource and output. Knowledge management is the art of creating additional value from academic knowledge assets. The e-community is the network community, newly created by information communication technology, and the critical place that share and transfer people's the various knowledge and thinking and the effective space that can apply knowledge management. If we construct a convenient and useful e-community in our university, we will be able to increase the student's intellectual needs, and create new knowledge. Web-portal will promote the activity of e-community providing easy to access and personalized web circumstance. The emergence of Internet and Web access to all university services will force institutions to rethik everything. We should reconfigure our academic environment in order to adapt information technology and educational change, and must do change management based on their structure and culture.

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A Study on Filter and Lamp of Blocking Fading Wavelength with Use of the Deposition (증착법을 이용한 퇴색파장 차단 필터 및 램프에 관한 연구)

  • Lim, Jong-Min;Yi, Chin-Woo
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.12
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    • pp.47-56
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    • 2010
  • For a human being's smooth activity, the clean air and comfortable lighting environment are needed. The suitable lighting environment is obtained generally by making it available for being formed the bright situation easy for seeing object and the visually comfortable atmosphere. In this way, even the lighting environment was changed along with economic development. Even a light source was diversified. Thus, several kinds of new light sources such as LED, OLED, PLS, and CNT came to appear. Halogen lamp, which has low efficiency due to high color rendering among lamps of being used now, is being much used yet. However, owing to radiation of UV and IR, there are many limitations to the subject in general exhibition lighting, museum, and art museum. Accordingly, a research was performed on filter that is blocked UV and IR at the same time, by using halogen lamp that is excellent in color rendering and in life.

Quality Characteristics of Maejakgwa with added Ligularia fischeri Powder (곰취 분말을 첨가한 매작과의 품질 특성)

  • Park, In-Duck
    • Journal of the East Asian Society of Dietary Life
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    • v.23 no.5
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    • pp.605-612
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    • 2013
  • The purpose of this study was to investigate the quality characteristics of maejakgwa prepared with Ligularia fischeri powder (0, 1, 3, 5, 7%) as a substitute for flour. The pH of maejakgwa dough significantly decreased in response to the addition of all levels of Ligularia fischeri powder. Spread factor values and water contents increased significantly with increasing amounts of Ligularia fischeri powder. In addition, the Hunter color L, a and b values decreased significantly with increasing amounts of Ligularia fischeri powder. Furthermore, hardness was increased significantly as the level of Ligularia fischeri powder increased. DPPH free radical scavenging activity increased significantly as the content of Ligularia fischeri powder increased (p<0.05). Finally, the results of the sensory properties indicated that maejakgwa containing 3% Ligularia fischeri powder had the highest scores. These results suggest that Ligularia fischeri powder can be applied to maejakgwa in order to achieve high quality and functionality.

A Comparative Analysis of the Characteristics of Male Consumers Segmented by Fashion Leadership (유행선도력에 의해 세분화된 남성 소비자 집단의 특성비교)

  • 김찬주
    • Journal of the Korean Society of Costume
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    • v.37
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    • pp.89-102
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    • 1998
  • This paper has main purpose of identifying the difference of the characteristicss of male consumers who have different levels of fashion leadership. 538 male consumers living in Seoul area was surveyed using questionnaire. Sam-ples were surveyed using questionnaire. Sam-ples were segmented as 3 groups by fashion leadership and named fashion leader, fashion follower and fashion retards. Various character-isticss in terms of personality, attitudes, life-estyle activities, magazined readership, use of fashion information sources, shopping behavior, risk perception and demographics analysis among 3 segments. 3 groups showed significant differences in many characteristics such as venturesomeness, cosmopoliteness, ex-tensity of travel, art/culture activity for offtime, reading of male-oriented magazines, in-formation search through fashion magazine, fashion knowledged, shopping preferrence, clot-hing expense. Based on major characteristics of each segment, some tips for marketing strategies were suggested.

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State of the Art of Imaging Equipment and Tools for Nuclear Cardiology (심장핵의학 검사를 위한 영상장비 및 도구의 최신동향)

  • Lee, Byeong-Il
    • Nuclear Medicine and Molecular Imaging
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    • v.43 no.3
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    • pp.165-173
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    • 2009
  • Nuclear cardiology in Korea is less active, compared to nuclear oncology, but it has been specialized and ramified. Lately, sophisticated nuclear cardiac imaging methods provide more convenience for patients. It is necessary to accurately estimate the recent progress in the imaging devices for nuclear cardiology. Myocardial perfusion imaging is a well established study to evaluate heart function. Myocardial perfusion SPECT and PET have been used for assessment of coronary artery disease with various radiopharmaceuticals. And of late, the development of advanced imaging devices - multi-pinhole technique and high definition imaging technique - and software made the scanning time shorter and expanded the application field. Therefore, it is required to review the nuclear cardiology hardware/software for the clinical practice and research. In this review, the characteristics about recently-developed SPECT/PET and software for nuclear cardiology are described. It is hoped that this information would contribute to improving the activity of nuclear cardiac research in Korea where the research for the fusion imaging combining a and nuclear imaging is drawing more attention.

A Study on the Media Characteristics of Contemporary Interior Design (현대 공간 디자인의 매체성에 관한 연구)

  • Shin, Hong-Kyung
    • Korean Institute of Interior Design Journal
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    • v.16 no.5
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    • pp.30-37
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    • 2007
  • According to the passage of an age, a method which communicates each other between the city and space, and space and a human has changed. Recently, as the city is developing related with the public, the sphere and a territory of activity of a public has been wider in an environment of the city. Therefore, development of night scenery and the rise of a medium of a vision are accompanied with a new material and the high-technology. Innovation of abundant techniques tends to being surface and mass media, and breaks from the architectural aspect of space as mutual expansion of relations between interior and exterior, and making a boundary obscurely. Space design represents peculiarity of non-territorial which modern art, an advertisement, a media and a reflection are integrated as getting over above tendency. As we find out methods which the public can communicate with the space in wider territory, the public and the space can extend mutual relations and the design of modern space is been varying a part as the space which has a context of city and synthetic sociality for the public by avoiding independent objects.

3D-QSAR Study of Melanin Inhibiting (S)-(+)-Decursin and its Analogues by Pharmacophore Mapping

  • Lee, Kyeong;Jung, Sang-Won;Naik, Ravi;Cho, Art E.
    • Bulletin of the Korean Chemical Society
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    • v.33 no.1
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    • pp.149-152
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    • 2012
  • The (S)-(+)-decursin and its analogues are reported as potent inhibitors of melanin production in B16 murine melanoma cells. In order to understand the factors responsible for potency as well as inhibition of potency of (S)-(+)-decursin and its analogues, three-dimensional quantitative structure-activity relationship (3D-QSAR) studies were performed. Since receptor structures are not available, a pharmacophore model was constructed. Using PHASE, we generated 3 different models and selected the seven-site model, which returned excellent statistical values ($r^2$ = 0.9127, $Q^2$ = 0.6878, Pearson-R = 0.9014). Using the generated pharmacophore model, we screened a natural products library and obtained 4'-epi-decursin as the most related compound. 4'-epidecursin is similar to (S)-(+)-decursin, but shows additional interaction possibilities with tyrosinase. The study thus sheds some light on possibility of developing more potent tyrosinase inhibitors.

Characteristic of Expressionism on the European Designer's Works in the early 20th Century (20세기초 유럽 디자이너들의 작품에 나타난 표현주의적 특성)

  • 채금석
    • Journal of the Korean Home Economics Association
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    • v.34 no.2
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    • pp.5-30
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    • 1996
  • The purpose of this study is to observe artistic of Expressionism reflected to works of European costume designers by analizing works of seven major representative costume designers in the twentieth century. They are Mariano Fortuny, Paul poiret, Madelene Vionnet, Jean Patou, Jeanne Lanvin, Gabriel Chanel and Elsa Schiaparelli. These designers deployed individual and various creative costume design work with peculiar expresive techniques, which is based on the Expressionism. Although each creative work was made in extremely unique sense, there was comon expressive spirituality I their creative activity. The findings are as follows : 1. Based on the "Medieval-directed characteristic" which arose over all fields of art of those days, a modern and reformative clothing beauty was created by reanalyzing traditional motive. 2 Characteristic of Cubistic Expressionism were described in overall silhouette of clothing and fine decorative element. 3. Fantastic Expressionism, which pursued basic worth from the primitive and ethnic customs, effected costume style of early 20th century and draw such designers as Mariano Fortuny, Leon Bakst, Paul Poiet, Elsa Schiaqarelli to adopt intensive and primary color. And it also gave an impact against traditional concepts by accepting fantastic oriental Exoticism.Exoticism.

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