• 전기의세계
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• v.43 no.5
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• pp.48-52
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• 1994

지난 해에 필자는 교육부의 국비해외파견연구교수로서 독일의 아헨공대에서 11개월동안 체재하였는데, 이하 필자가 체재하였던 전력시스템 및 에너지 경제연구소(institut fuer Elektrische Anlagen und Energiewirtschaft: 이하 이 연구소)를 중심으로 하여 독일의 전력분야를 소개하고자 한다.

• Journal of Korean Library and Information Science Society
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• v.38 no.3
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• pp.455-475
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• 2007

Library change of recent times first change of the user there is a wild possibility with most big feature. The user the housewife and unemployment sleeps from the student use center of weekday, with very old man use and to holiday the attribute of the user is changing with family accompaniment use. As the residential type library does recently and the library of new concept appears and it provides a reading service with the form which confront in attribute of the user who is various. This study which it sees the public library of the city center where there is to an execution time at the residential type library the family from inside the library tracking investigated use conduct in the object. This research analyzed the interrelation of composition feature of the type of family use and the un-reading behavior.

• 월간산업보건
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• s.271
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• pp.42-43
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• 2010

• 대한치주과학회:학술대회논문집
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• 2007.11a
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• pp.27-28
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• 2007

• Cement
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• s.3
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• pp.39-61
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• 1963

• 환경사랑
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• s.8
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• pp.7-7
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• 1996

• 어항어장
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• s.64
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• pp.27-33
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• 2003

• Journal of the Korean Geotechnical Society
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• v.18 no.5
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• pp.195-207
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• 2002

The domestic, quantity of copper slag as a by-product at copper smelting process reaches 700,000 tons annually while its application is limited. Therefore, the secure disposal plan of copper slag is urgently required. For this reason, in this study, copper slag was used as a substitute for sand in Sand Compaction Pile that is one of the improvement methods of soft ground because the particle size distribution of copper slag ranges from 0.15mm to 5m(coarse state) and it maintains stable glassy state environmentally. The geotechnical characteristics of copper slag were evaluated through laboratory model tests and the field application of copper slag was compared with generally used sand by pilot tests. From these experimental results, copper slag's material characteristics, bearing capacity, settlement reduction and improvement effects of surrounding ground were found to be superior to generally used sand. The copper slag can be used as a substitute far sand in the Sand Compaction Pile method and as recycling material of industrial by-product with high econonical and environmental value when natural resources are being exhausted.

• Journal of Korea Society of Industrial Information Systems
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• v.29 no.1
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• pp.63-76
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• 2024

In this study, we analyzed queue length and sojourn time of discrete-time BMAP/G/1 queues under the workload control. Group customers (packets) with correlations arrive at the system following a discrete-time Markovian arrival process. The server starts busy period when the total service time of the arrived customers exceeds a predetermined workload threshold D and serves customers until the system is empty. From the analysis of workload and waiting time, distributions of queue length at the departure epoch and arbitrary time epoch and system sojourn time are derived. We also derived the mean value as a performance measure. Through numerical examples, we confirmed that we can obtain results represented by complex forms of equations, and we verified the validity of the theoretical values by comparing them with simulation results. From the results, we can obtain key performance measures of complex systems that operate similarly in various industrial fields and to analyze various optimization problems.

• Journal of the Daesoon Academy of Sciences
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• v.48
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• pp.305-335
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• 2024

In the 7th and 8th centuries, Chinese Buddhism was at its peak, and major sects emerged and began to differ from one another in significant ways. This fact was also revealed through several versions of Biographies of the Eminent Monks and changes observable in the peculiarity of their formats. In the early 6th century, Huijiao (慧皎) compiled Gaosengzhuan (高僧傳, Biographies of Eminent Monks) which contains the history of Buddhism after it was introduced to China. At this time, he established a new format called the ten-subjects (十科). In 645, Daoxuan (道宣) used these ten-subjects as the basic framework to compile Xu-Gaosengzhuan (續高僧傳). However, by modifying and supplementing some parts of the ten-subjects, he standardized the ten-subjects into a format suitable for historiography. After the Xu-Gaosengzhuan, several versions of Biographies of the Eminent Monks were compiled in a format that further modified the ten-subjects. Fazang (法藏) wrote Huayanjing zhuanji (華嚴經傳記, 690?) which consisted of the ten-subjects, but the names and meanings of the subjects changed significantly to emphasize the Avatamsaka philosophy. Subsequently, while compiling Hongzan fahuazhuan (弘贊法華傳, 706?), Huixiang (惠詳) compiled a newly modified list of eight-subjects based on the ten-subjects of Gaosengzhuan and Xu-Gaosengzhuan. Sengxiang (僧詳) compiled Fahua xhuanji (法華傳記, 750?) in the format of twelve-subjects which added two new subjects to the ten-subjects of the Huayanjing zhuanji. These two formats focused on faith rather than philosophy. Even in the Chan (Zen) schools, a series of Biographies of the Eminent Monks was compiled from the beginning of the 8th century. Chuan fabaoji (傳法寶紀, 713?), Lengqui shiziji (楞伽師資記, 713?), Lidai fabaoji (歷代法寶記, 774), and Baolin zhuan (寶林傳, 801) are all examples of such compilations. However, the format of these four Biographies of the Eminent Monks was completely different from prior versions. Without setting any subjects, the authors established and described a dharma lineage transmitted continually from master to disciple. This is because Chan Buddhism does not rely on Buddhist texts but focuses on monks achieving realization through other means. At first, only the Chinese patriarchs were listed, but starting with Baolin zhuan, 27 patriarchs including Buddha and Kasyapa were included in the dharma lineage and presented as history. This fictional lineage was based on the need to secure sectarian superiority and legitimacy as Chan Buddhism flourished.