• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.17 no.1
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• pp.35-40
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• 1981

This pape presents a study of stability of the two mass rotor with limited power similar to that employed by Kononenko and also presents a study on the digital computer to obtain the unstable region of the ;'ot::r oyer two critical speed ranges. The unstable region is identified by studying the Routh-Hurwitz criterion of the chc.rc.cteristic equation. The results are presented in two and three-dimensional diagrams to show how the various parameters affeCt the unstable region.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.3 no.1
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• pp.12-17
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• 1985

This pape rdeals with the first half of ALGOL-60(Subset) compiler -scanner and analyzer-, which is writter in FORTRAN IV. As the original syntax description of ALGOL-60 is too complex to use, real number array, and procedures are omitted. And a subset of ALGOL-60 is defined.

• Childhood Kidney Diseases
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• v.22 no.1
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• pp.7-11
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• 2018

Significant advances in the diagnosis and medical care of children with chronic kidney disease (CKD) are major reasons for the better survival rates of children and adolescents with CKD than the survival rates reported in previous decades. These patients are reaching adulthood, and therefore require a transition to adult medical care. This transition phase is well-recognized to be associated with considerably increased morbidities and medical problems, such as non-adherence, graft loss after transplantation, and loss to follow-up. Low adherence increases morbidity and medical complications and contributes to poorer qualities of life and an overuse of the health care system. However, these tragic outcomes may be avoidable through a structured and well-defined transition program. In the last decade, there has been increasing interest to resolve these medical and psychological problems that occur during the transfer of young adult patients from pediatric to adult renal units. The aims of a successful transition from pediatric to adult medical care include enhancing the individual development of better health-competence and stabilizing, or even improving, the state of health. This review will focus on various aspects of the transition phase of adolescents who have CKD or who underwent kidney transplantation from pediatric to adult nephrology care.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.3
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• pp.1308-1312
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• 2011

CCFL(Cold Cathode Fluorescent Lamp)for BLU of LCD and special lighting has been widely utilized. The removal of oxide film formed on electrode of CCFL in manufacturing process is required. In this pape Plasma treatment was carried out to remove the oxide film. To ensure the optimum process, the analysis of sheet resistance, XRD, AFM and solder test was conducted. A minimum sheet resistance and the maximum percentage of the solder coverage ratio were measured in optimal process conditions such as plasma power consumption 600W and processing time of 70 seconds. As the plasma treatment is confirmed to be due to removal of copper oxide, this process is expected to be used as a treatment of electrode for CCFL.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.31 no.6 s.261
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• pp.718-724
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• 2007

Some of gas turbine model of 7F-Class has constructed and is operating with units domestically. Non-destructive testing (NDT) is one of the methods being used to inspect damage $1^{st}$ stage bucket and review damage trends. We also analyze damage configuration and microstructure according to material and compare with pape of electric power research institute (EPRI). The damaged mode could be determined by leveraging failure analysis. Especially, configuration uprate of bucket is not only to prevent damage during operation but also avoid domestic manufacturing by the competitors. Modifications were mainly concentrated on surfaces such as cooling hole and bucket tips. Analyzing of bucket damage, the earlier model of 7F-Class used with one cycle with equivalent operation hour (EOH), has various cracking of the bucket surface. Bucket damage of new model is centered on tip area (54%) as analyzed by EPRI research. We conclude that improving bucket configuration would increase repair rate on the bucket tip.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.16 no.8
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• pp.710-718
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• 1991

In this pape, an analysis approach for the performance of serial search burst-format direct sequence spread-spectrum code acquisiion system using matched filter is presented. And an acquistion system using analog matched filter is analyzed by this approach. And special consideration is focused on the effect of the code autocorelation sideobes. The basic idea of thi approach is the constuction of state tansition digram at the time of random packet arrival and the calculation of the packet loss probability, which is deveoped in terms of the following parameters: the false alarm probability. the etection probability, and the probability of receiver blocking obtained from the blocked customers cleae queeing system model. The analysis results reveal that the performance of the acquisition system is degraded by the effet of the code autocorrelation sidelobes above a certain value of SN/chip.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1993.10a
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• pp.1243-1253
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• 1993

Visual features of a mushroom(Lentinus Edodes L) are critical in sorting and grading as most agricultural products are. Because of its complex and various visual features, grading and sorting of mushrooms have been done manually by the human expert. Though actions involved in human grading looks simple, a decision making undereath the simple action comes form the results of the complex neural processing of the visual image. And processing details involved in the visual recognition of the human brain has not been fully investigated yet. Recently, however, an artificial neural network has drawn a great attention because of its functional capability as a partial substitute of the human brain. Since most agricultural products are not uniquely defined in its physical properties and do not have a well defined job structure, a research of the neuro-net based human like information processing toward the agricultural product and processing are widely open and promising. In this pape , neuro-net based grading and sorting system was developed for a mushroom . A computer vision system was utilized for extracting and quantifying the qualitative visual features of sampled mushrooms. The extracted visual features and their corresponding grades were used as input/output pairs for training the neural network and the trained results of the network were presented . The computer vision system used is composed of the IBM PC compatible 386DX, ITEX PFG frame grabber, B/W CCD camera , VGA color graphic monitor , and image output RGB monitor.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.761-769
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• 2006

한국사회에서 새로운 미디어 문화로 가장 각광받는 것 중 하나가 '싸이월드(www. cyworld.com)' 이다. 싸이월드는 웹(Web)에서 하루하루의 일기(Log)를 쓰는 개념인 '개인 블로그(Blog)'로써 개인 미니 홈페이지 형태이다. 이는 단순한 트렌드에 그치는 것이 아니라, 2000 년대 초 카페나 커뮤니티를 기반으로 한 '집단(group) 사이버 문화'를 '개인 (individual) 사이버 문화'로 전환시키는 하나의 문화적 수준에서 논의되고 있다. 그런데 블로그 사이버 문화는 자본주의 소비문화와 밀접하게 연결된다. 현대의 사이비 문화는 개인의 능동적 선택과 이용을 전재로 하므로 자율적이고 독창적인 방식으로 미디어 문화를 소비하는 데, 자본주의 경제사회 속에서 개인의 자율성은 표면적인 이미지에 지나지 않는다. 특히 싸이월드와 같은 개인 미디어는 더욱 개인의 자율성에 기반한 문화행위를 실천하지만, 사실 싸이월드틀 움직이는 경제구조 속에서 규제된다. 싸이월드 이용자가 기본 미니홈피 플랫폼에 자신만의 개성을 표현하기 위해서는 '도토리' 라는 싸이월드의 전자화폐를 사용해야 하고, 이를 이용해 미니룸, 미니미, 스킨, 배경음악 등의 아이템을 구매한다. 그러나 싸이월드 이용자들은 개인의 자율성에 의해 소비행위를 창출하는 것이므로 이를 통해 이윤을 획득하는 자본세력에 대해서는 고려하지 않는다. 이것이 바로 자본주의 소비문화에 의해 지배되는 부정적인 '실제의 왜곡' 이다. 개인의 자율성을 강조함으로써 자본가의 이윤획득 구조를 은폐하여 자본본주의 소비를 재생산하고 강화하는 것이다. 따라서 우리는 개인 문화를 강조하는 현대 미디어 문화구조를 자본주의 권력의 장(場)으로 이해해야 한다. 그리고 미디어 문화의 생산과 소비를 통해 자본주의 소비 문화가 재생산되고 강화되는 현상을 비판함으로써 온라인 블로그의 커뮤니케이션 특성이 생산자(producer)로서의 기능보다 소비자(consumer) 로서의 기능이 강조되고 있음을 이해해야 할 것이다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.5A
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• pp.751-762
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• 2000

In the forthcoming next generation highspeed networks, the provisioning of broadband mobile multimedia services is the most important issue while an efficient network management architecture, which can manage the network resources efficiently, is essential. The next generation highspeed networks will be composed of the ATMand SDH-based transport network systems and the H-based interworking systems. The management functions of these network systems are implemented various technologies, such as TMN and SNMP. In order to integrate these network resources efficiently with heterogeneous management functions, the distributed network management architecture such as TINA is most appropriate. In this pape, we propose an interworking architecture for TINA manager and TMN agent. where the TINA-based EML subnetwork management operations mapped into the related management operations of the TMN NE agent. The proposed interworking architecture is simpler than JIDM, and the processing overhead is minimized.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.34 no.3
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• pp.17-24
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• 2002

An unsteady-state moisture diffusion through cellulosic fibers in paper was characterized from the moisture sorption experiment and the mathematical modeling. The sorption experiment was conducted by exposing thin dry paper specimens to a constant temperature-humidity environment. Oven dried blotting papers and filter papers were used as test samples and the gains of their weights were constantly monitored and recorded as a function of sorption time. For a mathematical approach, the moisture transport was assumed to be an one-dimensional diffusion in thickness direction through the geometrically symmetric structure of paper. The model was asymptotically simplified with a short-term approximation. It gave us a new insight into the moisture uptake phenomena as a function of square root of sorption time. The fiber-phase moisture diffusivities(FPMD) of paper samples were then determined by correlating the experimental data with the unsteady-state diffusion model obtained. Their values were found to be on the order of magnitude of $10^{-6}-10^{-7}cm^2$/min., which were equivalent to the hypothetical effective diffusion coefficients at the limit of zero porosity. The moisture sorption curve predicted from the model fairly agreed with that obtained from the experiment at some limited initial stages of the moisture uptake process. The FPMD value of paper significantly varied depending upon the current moisture content of paper. The mean FPMD was about 0.7-0.8 times as large as the short-term approximated FPMD.