• 한국항해항만학회지
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• 제35권8호
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• pp.683-689
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• 2011

기존 화물유통촉진법의 도시물류기본계획은 물류정책기본법의 지역물류계획이라는 명칭으로 변경되었으며, 그 내용도 지역물류산업과 지역민의 경제여건, 생활여건을 개선 지원해 가는 방향으로 조정되었다. 그러나 조정된 물류정책기본법에서도 아직까지 현실과 지역 상황에 맞는 목표의 설정과 이를 실현하기 위한 추진계획, 그리고 이 추진계획들을 과학적인 평가 지표를 통해, 평가 및 개선을 피드백 할 수 있는 시스템적인 체계가 구축되어 있지 않다. 이에 본 연구는 기존 지역의 물류기본계획들을 검토하고, 향후 인천시가 지역물류기본계획을 수립하는데 필요한 지표개발을 통해 중장기적으로 효율적인 지역물류기본계획을 운영하고 관리하는데 일조하고자 하였다.

• 소성∙가공
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• 제32권1호
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• pp.28-34
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• 2023

In this research, a representative volume element (RVE)-based FE Model is presented to estimate the mechanical properties of additively manufactured continuous fiber-reinforced composites with different fiber orientations. To construct the model, an ABAQUS Python script has been implemented to produce matrix and fiber in the desired orientations at the RVE. A script has also been developed to apply the periodic boundary conditions to the RVE. Experimental tests were conducted to validate the numerical models. Tensile specimens with the fiber directions aligned in the 0, 45, and 90 degrees to the loading direction were manufactured using a continuous fiber 3D printer and tensile tests were performed in the three directions. Tensile tests were also simulated using the RVE models. The predicted Young's moduli compared well with the measurements: the Young's modulus prediction accuracy values were 83.73, 97.70, and 92.92 percent for the specimens in the 0, 45, and 90 degrees, respectively. The proposed method with periodic boundary conditions precisely evaluated the elastic properties of additively manufactured continuous fiber-reinforced composites with complex microstructures.

• 대한한의학원전학회지
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• 제31권2호
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• pp.83-103
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• 2018

Objectives: The Qing Dynasty experienced a development in Yunqi even greater than in the Ming Dynasty. Popularization and universalization of Yunqi theory led to many books on the subject published, especially with weights on Warm Heat Disease and Pestilence, also giving birth to new Yunqi theories. A study into this development has a great significance in the study of the traditional medicine in Qing. Methods: The paper studies the Yunqi books published in the Qing dynasty to find out the unique characters of those books. To understand the direction which the Yunqi theory in the Qing period took, the paper also reviewed the positions of different groups, those who were favorable, those who compromised, and those who were unfavorable. Results: Four directions were taken by the study of Yunqi in the Qing period. First is the systemic study and composition of Neijing's chapter of Yunqi. This direction was taken by Liumaoxiu's NeiJingYunQiBingShi) and $N{\grave{e}}ijingyunqibiao$, Xuefuchen's Suwenyunqitushuo, Zhuenhua's Suwenyunqiqianshuo, an unknown person's Su wen yunqi chao, Weigeliu's Neijingqihuapian. The second direction is the study of Yunqi in relation with the Warm Heat Disease and Pestilence, which was taken by Mayin lin's Wuyunliuqiwenyifayuan, Lumaoxiu's Suwenyipianbìngshi, Litianchi's Shiyiwenbingqìyunzhengyan lun, and Wangxun's Cihangsanyuanfujifang. The third direction deals with a new Yunqi theory. The Fourthis the explanation of Yunqi in the form of Songs, which was taken by Wuqian's Yunqiyaojue, and Wengzao's Yunqiyaojue. Conclusions: Ludanchen published Yunqibian, and explained that Haizichouyinmaochen, which is the eclipse's south latitude, becomes Nanzheng, and Southern government, which is the eclipse's north latitude, becomes Northern government. Lumaoxiu revealed that the Liuqidasitian, founded by Wangpuzhuang, his great grandfather on the mother's side, is in alignment with the theory of Dashitian, used by Liushozhen, Lidongyuan, Zhudanxi, and Zhangjingyue. The representative figure in the favorable view of Yunqi in the Qing period is Wuyang, that of those who compromised is Fengzhaozhang, and that of opposition is Zhangzhuo.

• 수산해양기술연구
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• 제58권4호
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• pp.299-309
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• 2022

Among the fishing vessels operating in the coastal waters, jigging fishing vessels were considered representative vessels engaged only by wind, sea, tide, and external force. Then, a fishing vessel with a length of shorter than 10 m from July 1, 2018 to August 5, 2019 was studied to obtain a drift prediction model by multiple regression analysis. In the correlation analysis between variables for leeway of speed and direction, the speed and direction of tidal seem to be the most affected in coastal waters. Therefore, it should be considered an explanatory variable when conducting drift tests. As a result of multiple regression analysis on the predicted equations of leeway speed and direction due to the external force on the drift of the fishing vessel, p < 0.000 was considered significant in the F-test, but the coefficient of determination was 55.2% and 37.8%. The effect on the predicted leeway speed was in the order of the tidal speed and current speed. In addition, the impact on the predicted leeway direction was in the order of the tidal speed and current speed. ŷ(m/s) = - 0.0011(x1) + 0.9206(x2) + 0.0001(x3) + 0.0002(x4) + 0.0050(x5) + 0.0529(x6) + 0.2457 ŷ(degree) = 0.6672(x1) + 93.1699(x2) + 0.0585(x3) - 0.0244(x4) - 1.2217(x5) + 4.6378(x6) - 0.0837

• 한국유체기계학회 논문집
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• 제15권4호
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• pp.67-71
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• 2012

This study analyzed performance changes by an inner flow path of impeller groove for side channel type ring blower using CFD. Two models have the same side channel and clearance while one has an inner flow path and the other doesn't. To analyze the performance change of a ring blower, overall performance and local flow field were analyzed. For the overall performance, pressure increase and impeller torque were checked under the design flow condition. Under the design flow condition, pressure increase was greater for the model with the inner flow path. The model with the inner flow path showed improved efficiency because the area subject to torque decreased due to the creation of inner flow path. To analyze local flow field, a section was created from the representative location of each impeller groove toward the direction of radius. Inner channel pressure distribution depending on the rotation direction shows that the model with the inner flow path has pressure equilibrium of working fluid through the inner flow path. Velocity distribution of inside impeller groove shows that flow field was coupled and appeared to form an inner wall where the flow field was stabilized.

• 디지털산업정보학회논문지
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• 제11권2호
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• pp.91-100
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• 2015

The environment of using digital devices has been developed day by day, as mobile communication network has been fast and smart phone and tablet PC have been spread. When the environment changing, the contents consumers prefer have been changing too. The Webtoon became the representative contents of 'Snack culture'. The webtoon has led the growth of cartoon market for years recently instead of the slow comics growth. And it places its elf as contents on a firm basis, as it has been adapted to another genre such as Pay, Flm, TV Drama. Now it's expected to be an extgeneration contents that will lead Han-ryu(Korean wave). Though the webtoon has important and strong presence, there is no digital archive for collecting and preserving the webtoon, Korean Cartoon Contents Agency started making 'webtoon archive', but the groundwork and the study on the webtoon that represents digital culture contents are not enough a lot. In this study, the cases on digital archiving of culture contents in Korea are researched, and the direction on webtoon archiving that has just started is also discussed. The Archiving of webtoon that can't be seperated from digital contents is connected with archiving of digital culture contents in direction where they should be headed to.

• ETRI Journal
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• 제37권2호
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• pp.283-294
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• 2015

A model that precisely forecasts how much wind power is generated is critical for making decisions on power generation and infrastructure updates. Existing studies have estimated wind power from wind speed using forecasting models such as ANFIS, SMO, k-NN, and ANN. This study applies a projected clustering technique to identify wind power patterns of wind turbines; profiles the resulting characteristics; and defines hourly and daily power patterns using wind power data collected over a year-long period. A wind power pattern prediction stage uses a time interval feature that is essential for producing representative patterns through a projected clustering technique along with the existing temperature and wind direction from the classifier input. During this stage, this feature is applied to the wind speed, which is the most significant input of a forecasting model. As the test results show, nine hourly power patterns and seven daily power patterns are produced with respect to the Korean wind turbines used in this study. As a result of forecasting the hourly and daily power patterns using the temperature, wind direction, and time interval features for the wind speed, the ANFIS and SMO models show an excellent performance.

• 한국게임학회 논문지
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• 제15권1호
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• pp.55-62
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• 2015

본 연구는 웹 게임 스토리텔링이 갖는 의미와 발전방향에 대해 논한다. 디지털 문화 산업은 기술혁신에 의해 성장을 거듭하고 있다. 그러나 웹 게임 스토리텔링은 기술적 발전보다 덜 주목 받고 있다. 온라인 게임 산업의 미래가 클라우드 환경에 기반한 웹 게임 이라고 보고, 웹 게임의 성장을 위해서 스토리텔링이 얼마나 중요한지 연구해보고자 한다. 국내 웹 게임의 대표작인 '삼국지를 품다'를 성공사례로 하여 배경 스토리인 '삼국지 연의'가 웹 게임과 만나 어떤 상호보완적 관계를 이루었는지를 분석하여 웹 게임 스토리텔링의 방향성을 제시해보고자 했다.

• 조명전기설비학회논문지
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• 제27권10호
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• pp.21-29
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• 2013

The short circuit and overload is presented by main cause of electrical fire. However, 85% of the fan directly connected the outlet box without switch in total 110 fans as a research in manufacturing industries. In installation direction of vertical type fans which was placed on the horizontal surface, only 39 vertical type fans were placed on vertical surface and 71 fans were placed on the horizontal type. The installation direction of the fans warns of the risk of the fire hazard due to the motor stall to the user manual of the maker. However, it is the representative nonconformity example of construction which the people or builder disregards. In addition, the condition of ground connection with the earth leakage prevention was investigated in grounding of 5 fans, non-grounding of 105 fans. The double insulation structure is generally used for small fan and it can't connect ground wire as electric plug of non-grounding type. However, industrial iron fan needs ground wire for electric leakage and to protect against electric shock.

• 한국지진공학회논문집
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• 제17권5호
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• pp.197-207
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• 2013

The seismic performance of school buildings has been a matter of common interest socially and academically. The structural system of the school buildings is representative of the domestic low-rise reinforced concrete moment resisting frames, which apply extensively infills in their masonry walls. The masonry infilled walls are divided into full masonry infill in the transverse direction and partial masonry infill in the longitudinal direction. The masonry infilled walls are usually not included in structural analysis during the design process, but affect significantly the seismic performance because they behave with surrounding frames simultaneously during earthquakes. Many researchers have studied the effect of the masonry infilled walls, but several issues have been missed such as the increase of asymmetry by adding the full masonry infill, the size of the mean strength of the full masonry infill, and short column effect by the partial masonry infill. The issues were analytically investigated and the results showed that they should be checked at least by nonlinear pushover analysis in the seismic performance evaluation process. The results also confirm the weakness of the guideline of Korean Educational Development Institute where the seismic performance is basically assessed without structural analysis.