• Journal of the Korean Society for Library and Information Science
• /
• v.1
• /
• pp.59-75
• /
• 1970

The study tries to clarify middle and high school students' reading interests in recreational, informative, inspirational, and aesthetic reading areas 1,260 students' reading cards from 7 schools are divided into economically high, middle, and low groups, each of which is subdivided into reading objectives. The writer finds no close relationship between the students' economic status and their reading preferences. However, the study indicates that recreational books are read in the order of higher, middle, and lower economic groups and informative and inspirational books in the reversed order. The writer also finds different preferences between individuals more evident than those between groups, and recommends individualized reading guidance for students.

• Proceedings of the Computational Structural Engineering Institute Conference
• /
• 2001.04a
• /
• pp.69-75
• /
• 2001

It is very important to secure the marine vessels during entire loading and off-loading operations. The environment influences on loading conditions. the western coastal area of Korea is characterized as a strong current due to a high tidal range. The tension of mooring lines varies as per the current and wave changing its magnitude during the day. A proper mooring arrangement and design of mooring line should be determined as per environment conditions. In this study, a 50,000 DWT container ship being moored is investigated numerically. The dynamic tension of mooring lines is estimated by MORA (Mooring Response Analysis) software. Environmental conditions of selected offshore terminal site are plugged as input data. The mooring line tensions are obtained for various wave frequencies per wave directions. The results demonstrate the change of tensions of lines and the allowable range of safe conditions in berthed mooring.

• Proceedings of the Computational Structural Engineering Institute Conference
• /
• 2001.04a
• /
• pp.121-127
• /
• 2001

To investigate the stability and integrity of offshore structures, it is necessary to estimates the significant ocean environmental loadings. They include hydrostatic pressure, wind, wave, current, tide, ice, earthquake, temperature, marine growth and scouring. Waves are of major importance among them because of the large forces acting on submerged parts of the structure caused by accompanying water motions. For the comparison of stress and deflection analysis tools, a vertical pile is applied under environmental loads. The analysis is concerned with SACS(Structural Analysis Computer System), ANSYS and C program. SACS and C program have nearly the same results but not ANSYS. This study shows the comparison of results obtained from 3 different approaches.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
• /
• 2001.10a
• /
• pp.122-127
• /
• 2001

As pipelines are often used to transport gas, oil, water and oil products, there are more than one pipeline installed in the offshore field. The size and space of pipelines are various depending on the design specifications. The pipelines are to be designed and installed to secure the stability to external loads during the installation and operation period. The flow patterns are very complex around the pipelines being dependent on incoming flow velocity, pipelines size and space. To investigate the flow patterns, number of experiment are conducted with visualization equipment in a circulating water channel. The flow motion and trajectory were recorded from the laser reflected particles by camera. From the experiment the flow patterns around spaced pipelines were obtained. Also pressure gradient was measured by mano-meter to estimate the hydrodynamic forces on the behind pipeline. The results show that the various sizes and spaces can be affected in the estimation of external load. The complex flow patterns and pressure gradients can be effectively used in the understanding of flow motion and pressure gradient.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
• /
• 2001.10a
• /
• pp.190-195
• /
• 2001

Flow patterns are very complex and interactive between cylinders. The patterns are turbulent and non-linear caused by various factors. In this paper, flow patterns and pressure gradient around vertical cylinders were investigated by experiment. Changing gaps between cylinders the flow patterns are measured at a fixed coming velocity. Flow patterns showed very complex and closely related to the coming velocity and cylinder space. The pressure gradient around the flow field is observed by twelve hole pitot tubes and manometer. The experiment has been conducted in circulating water channel with PIV system. That can visualize flow patterns. The laser beam was used to reflect the image from particles and recorded by CCD camera. The cylinders were spaced from ID to 5D with 0.5m/sec of incoming flow velocity. The experimental results using pitot tube showed in good agreement with results of precious by others study. The results can be applied in the understanding and design of multiple pile array structures.

• Korean Journal of Environmental Biology
• /
• v.17 no.4
• /
• pp.521-527
• /
• 1999

To investigate the variations of environmental and microbial populations in six stations at water region of Gangjin Bay, nutritive salts, water temperature, COD, DO, pH, heterotrophic bacteria, fungi and facal coliform bacteria were analysed four imes from February to November, 1998. These data were subjected to simple statistics, correlation analysis and principal factor analysis. Ecosystem of Gangiin Bay was regulated by 2∼4 factors during four seasons. We estimated that it was mainly influenced by inflow of fresh water, nutrient salts, suspended solids, salinity and variation of water temperature. These results suggested that influences of environmental factor of Gangiin Bay was relatively less than those of other bays.

• The Science & Technology
• /
• v.8 no.3 s.70
• /
• pp.25-26
• /
• 1975

한국과학기술정보센터(KORSTIC, 소장 김두홍)는 1980년대 후반에 완전한 자립운영을 실현하기 위한 단계적 시도로 제 1 차 5개년사업계획(1976~1980)을 수립하였다. KORSTIC은 1962년 1월 유네스코 한국위원회에서 출발했고 1964년에는 문교부 산하 사단법인으로 발족되었다. 그후 1967년에 과학기술처 산하로 이관되었으며 재단법인으로 개편하게 되었다. 1969년 한국과학기술 정보센터 육성법의 제정공포로 현 청사(건평 1,548평)에 입사, 정보자료 입수와 자료장비를 갖추면서 1974년 7만여건의 정보자료를 제공해 오고 있다고 한다. KORSTIC 5개년 사업계획의 대요를 살펴보면 ①본 센터 특유의 정보 서어비스ㆍ패턴의 정립, ②대규모 데이터ㆍ뱅크의 설치ㆍ운영 및 ③장비, 자료, 인원확충과 청사증축 등 3대 실천과제를 설정하고 있다. 이 사업이 끝나는 80년대에는 현재의 KORSTIC의 예산상 자립도 20%를 50%선까지 끌어올린 수 있게 되며, 더 나아가 이를 기초한 사업의 계속적인 확장으로 1988년에는 100% 자립하고, 1989년부터는 적자운영을 할 수 있게 한다는 것이다. 이와 같은 계획이 성공적으로 완수되며 본 센터는 그 규모나 서어비스 내용에 있어 선진국 수준까지는 미치니 못할 것이나 개발도상국의 정보 센터로서는 좋은 표본이 될 수 있을 것 같다. 따라서, 직원훈련이나 장비확보 등에 있어서 특정국가나 UN 기구 등의 원조를 받는 수원기관의 입장을 탈피하고 개발도상국들을 지원하는 원조제공기관으로 성장하게 될 것이라 한다. 동 5개년 사업기간중에 추진될 3가지 주요 사업을 그 내용별로 살펴보면 다음과 같다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2018.10a
• /
• pp.637-640
• /
• 2018

The paper proposes a new deep network-based model that rates periorbital wrinkles in order to alleviate the shortcomings of the evaluation by human experts as well as to facilitate the automation. Periorbital wrinkles still need to be classified by human experts. Furthermore, the classification results from experts are different from each other in many cases due to the inter-interpreter variability and the absence of quantification criteria. Unlike existing classification methods which classify original images, the proposed model consists of a cascade of two deep networks: U-Net for the enhancement of wrinkles on an input image and VGG16 for final classification based on the wrinkle information. Experiments of the proposed model are made with a data set that consists of 433 images rated by experts, showing the promising performance.

• Tuberculosis and Respiratory Diseases
• /
• v.48 no.5
• /
• pp.699-708
• /
• 2000

Background : A presumptive histopathologic diagnosis of tuberculosis is commonly based on the finding of acid-fast bacilli upon microscopic examination of a diagnostic specimens. Although this traditional histochemical staining method is satisfactory, it is time-consuming and not species-specific. For more specific assessment, in situ hybridization assay with oligonucleotide probes is introduced. Methods : The human surgical specimens were obtained from tuberculosis patients, and experimental specimens were made by injecting cultured M. tuberculosis organisms into fresh rat liver. Oligonucleotide probes complementary to ribosomal RNA portion were synthesized and labeled with multiple biotin molecules. For a rapid detection, all procedures were carried out using manual capillary action technology on the Microprobe staining system. Results : The in situ hybridization assay produced a positive reaction in experimental specimens (80-90% sensitivity) after pepsin-HCl pre-treatment for a good permeabilization of probes, but reliable result was not obtained from human surgical specimens. Conclusion : It is, therefore, suggested that biotin-labeled oligonucleotide probes have considerable potential for identification and in situ detection of M. tuberculosis but, there are some barriers to overcome for the diagnostic use of this method.