Global-MAHN에서 라우팅 오버헤드 개선에 대한 연구

張良根,金玄旭,李光培,吳世德,裵振勝,金在浩 明知大學校 産業技術硏究所 2007 産業技術硏究所論文集 Vol.26 No.-

In this Paper, we studied the mechanism that increases the network reliability and decreases network load in GMAHN environment based on the AODV routing protocol. This proposed algorithm is the research on the algorithm, minimizing network overhead by preventing unnecessary network overhead previously and adapting Local repair mechanism to efficient data transmission when route error happens in network, in GMAHN environment. To evaluate the proposed algorithm's performance, we analyzed the proposed algorithm and adapting in various experiment environment according to 5 experiment viewpoint such as node movement, gateway network zone, mobile node number, flow number. After evaluating the experiment, we confirmed better network improvement altogether through following result such as total average data reception rate's increase, average data transmission time's decrease, network overhead's decrease than existing GMAHN algorithm.

老子哲學體系

張世浩 慶星大學校 1987 부산수산대학 논문집 Vol.8 No.4

The purpose of this study is to organize the Lao Tzu's philosophical system. His philosophical system can be briefly summarized as follows: 1. Metaphysics; Lao Tzu argues that "Tao" of "Tzu Jan" should be the main body of the universe. It is not the velative "Tao" which comes to be changed according to time and space, but the eternal "Tao" which transcends the human sense. It is the ultimate source of all created things; it exists beyond time and space; which cannot be expressed by human language. "Tao" can explain the world of the thoughtless and that of the indifference. However, to exist beyond time and space does not mean transcendental existence. Rather this can be explained logically. From this point of view, "Tao" can be the same meaning with "Wu". 2. Cosmology; Lao Tzu takes attitude to the cosmology of "circulation and becoming" which represents his idea of "Tzu Jan." He argues that man should return tee "Tao" with eternal and infinite virtue of "Wu wei". Because all created things continue te be "becoming and circulating." 3. axiology; Tao Chia takes negative attitude to human value. Considering "Tzu Jan" as primary source of all created things, Tao Chia thinks that the human world is corrupted and unrelieved. Therefore Lao Tzu has a different value system with "Ju Chia". Lao Tzu's value system can be presented as "the spirit without posession" and "the spirit without fighting." 4. Philosophy of life : In a word, Lao Tzu's philosophy of life can be presented as "innocence." He argues that man should take "innocence" and "simplicity" like P'u and child, and regulate his desire. 5. Social and political philosophy : Lao Tzu's ultimate aim is to reach the state of "reducing the boundary of the nation and mimimizing the number of the people," that is, the idea of "Wu wei." According to Lao Tzu, statesmen should not oppress the people by using improperly organizing ability; through which, man comes to recover both the individual pureness and true humanity. As we have seen above, Lao Tzu argues that the people should be excluded from any artificiality and the individual should be free from violating each privacy. His insistence of the idea of "Tzu Jan" results from the concept which "Tzu Jan" is truth. Because truth is the standard of prospecting actual society. But though Lao Tzu's ideal philosophy is not accepted easily in the actual society, it may give us the possible way of recovering humanity in this era which is flooded with material civilization.

선박용 디젤기관의 배기배출물에 관한 연구(1)

장세호 도립 강원전문대학 1999 道立 江原專門大學 論文集 Vol.2 No.-

Regional and national restrictions on air pollution have once been enforced through the legislation for environmental protection and the IMO(International Maritime Organization) adopted the regulations for the prevention of air pollution from ships as MARPOL 73/78 Annex VI in September, 1997. The effect of this convention is expected to be about year 2003 but the restriction for NOx is applied to each diesel engine with a power output of more than 130kw which is installed on a ship constructed, which undergoes a major conversion on or after 1 January 2000. This study was investigated for various exhaust gas emissions in marine diesel engine. As a result, The O_(2) and CO decrease with increasing load of marine engine. Otherwise, CO_(2) and NOx increase with increasing load of marine engine.

선박용 디젤엔진의 배기배출물에 관한 연구

장세호 도립 강원전문대학 2000 道立 江原專門大學 論文集 Vol.3 No.-

Regional and national restrictions on air pollution have once been enforced through the legislation for environmental protection and the IMO(International Maritime Organization) adopted the regulations for the prevention of air pollution from ships as MARPOL 73/78 Annex Ⅵ in September, 1997. The effect of this convention is expected to be about year 2003 but the restriction for NOx is applied to each diesel engine with a power output of more than 130 KW which is installed on a ship constructed, which undergoes a major conversion on or after 1 January 2000. This study was investigated for various exhaust gas emissions in marine diesel engine. As a result, The CO_(2) and NOx increase with increasing load of marine engine. The CO_(2), CO, and NOx decrease with increasing supercharger pressure in manifold of diesel engine. Then the CO decrease with increasing cooling fresh water temperature of diesel engine.

Plyometric Training과 비타민 C 투여가 남고생의 체력, 혈중 젖산, 암모니아 및 젖산탈수소효소에 미치는 영향

장준원,김세종,이현미,서혜림,조현숙,고정림,염종우,예정복,백영호 釜山大學校 附設 體育科學硏究所 2003 體育科學硏究所 論文集 Vol.19 No.-

The purpose of this was to examine the effect of plyometric training and vitamin C ingestion on physical fitness and fatigue substance....

폴리머 콘크리트 복합체를 이용한 교통안전 시설물 개발

이명호,이재철,이승우,서장일,박세희 강원대학교 부설 석재복합신소재 제품연구센터 2004 석재연 논문집 Vol.9 No.-

폴리머 콘크리트 복합체를 이용하여 악천후에도 시인성이 좋고 주위의 경관과 어울리는 자동점멸 표지병을 개발하였다. 아날로그 회로에 비해 설계상의 난해한 점이 있으나 상대적으로 간편한 디지털 회로를 사용하여 자동점멸 회로를 구성하였으며, 작업의 능률을 높이고 개발비를 줄이기 위하여 OrCAD를 사용한 Simulation을 실시후 회로를 구성하였다. 표지병의 시공시와 같은 환경에서의 실험에서는 디지털회로의 작은 전류와 표지병간의 거리, 전선의 저항으로 인하여 클럭 및 클리어 신호에 전압강하와 상승/하강 시간의 증가가 나타났다. 표지병은 전자회로와 함께 설치되어야 하므로 방수성을 고려하여 표지병과 전자회로를 일체형으로 설계하였다. 실제 시공시의 환경에서 시행한 실험에서 나타난 문제점을 검토하였으며, 향후 연구방향에 관하여 고찰하였다. Using polymer concrete composite, the automatic-on/off road marker that is well distinguished in a bad weather condition of rainy or foggy day and is well harmonized with. Digital circuit that is hard to design but simpler than an analog circuit is used in designing the automatic-on/off circuit, and it order to raise the working efficiency and lower the development cost, OrCAD, a simulation tool of electric circuit, was used in simulating the circuit. In an experiment conducted under the circumstance of practical application, voltage drop and raising/lowering time increment in the clock and the clear signals are occurred because of small current of digital circuit and resistance of electrical line. Because that the road marker is assembled with the digital circuit, it is designed as one assembled unit by considering water proof. Some problems occurred in the experiment and the future work are discussed.

신경섬유종증 환자에게서 발생한 특발성 혈소판 감소증 1예

권세훈,김형호,강지인,장재혁,원경준,장재현,김상용,배학연 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Idiopathic thrombocytopenic purpura is a disease characterized by thrombocytopenia in peripheral blood with positive anti-platelet antibody titer, no splenomegaly, the presence of megakarocyte. The causes of idiopathic thrombocytopenic purpura were usually related to autoimmune disease, infection and drugs. A 46-years-old man was admitted for evaluation of abdominal mass. He has many cafe-au-lait spots and nodules in almost skin for 30 years. Several years ago, he palpated mass in Lt. inguinal area. hIe has known the abdominal mass after checking abdomen CT in local clinic and visited our hospital for evaluation of abdominal mass. At admission, laboratory tests showed hemoglobin 12.5 g/dL, hematocrit 38.4 %, WBC 5,460 /㎣ (neutrophil 64.5%, lymphocyte 21.7%, monocyte 4.1%, eosinophil 5.4%), reticulocyte 0.7%, Platelet 52,000 /㎣, total protein 6.51 g/dL, albumin 3.80 g/dL, alkaline pohsphatase 161 IU/L, AST 110.7 IU/L, ALT 64.9 IU/L, total bilirubin 0.44 ㎎/dL, BUN 18.4 ㎎/dL, creatinine 0.79 ㎎/dL. Peripheral blood smear showed normocytic normochromic anemia, thrombocytopenia. Bone marrow aspiration smear showed normoplastic myeloid and erythroid precursor. The bone marrow biopsy section shows normocellular marrow (35%) for his age and mildly increasing myeloid cell lineage. We have experienced a case of idiopathic thrombocytopenic purpura in a patient being in neurofibromatosis and therefore reporting it with documentary records. 저자들은 신경섬유종증 환자에서 특별한 원인을 발견할 수 없었음에도 특발성 혈소판 감소증이 발생한 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

GMAHN 환경에서의 TCP 프로토콜 성능 분석

吳世德,金玄旭,李光培,張良根,裵振勝,金在浩 明知大學校 産業技術硏究所 2007 産業技術硏究所論文集 Vol.26 No.-

Recently, GMAHN that provides interface between MANET and Wired Network has been focused in Mobile Communication. It is necessary that The technology provide reliable data transmission technology between mobile node and wired network in MANET environment that varing by the node movement. In this paper, using the TCP protocol(Tahoe, Reno, Vegas, SACK)that increases reliability between source and destination, we applied the TCP protocol mechanism to various environment, and compared result, and also proposed the efficient TCP mechanism by comparing each mechanism.

폴리머 콘크리트를 이용한 환경친화형 호안블럭 개발

이영호,이재철,이승우,서장일,박세희 강원대학교 부설 석재복합신소재 제품연구센터 2003 석재연 논문집 Vol.8 No.-

폴리머 콘크리트를 이용하여 호안블럭을 디자인하고 제작하였다. 제품의 표준화를 위하여 '폴리머 복합체를 이용한 호안블럭 제조용 시방서'를 작성하였다. 폴리머 콘크리트의 우수한 물리적 성질을 이용하고 환경 친화적인 호안블럭을 제작하기 위하여 중앙에 원형 홀이 있는 I형, 원형, 반원형 호안블럭을 디자인하였다. 중앙의 홀은 바닥재로 채워질 수 있도록 했으며 인공적인 색상보다는 주위의 환경과 어울리도록 식물을 조경할 수 있도록 하였다. 또한, 시판중인 호안블럭과 호환이 되도록 크기를 결정하였으며 자외선 흡수제를 첨가하여 제작하였다. 시방서에서 제시하는 방법으로 휨강도 및 흡수율을 측정하였다. Polymer concrete was used to produce the stone block. In order to make the blocks standardize, 'Specifications for Producing Stone Block using Polymer Concrete' was suggested I-type, circular type and semi-circular type of stone blocks were designed and produced, in which a circular hole was made to utilize the excellent physical properties of the polymer concrete and to produce the eco-friendly stone block. Instead of using artificial color, the hole was designed to be filled with the ground soil and then grass can be planted to make the blocks harmonize with surroundings. The dimensions of blocks were determined to fit the cement concrete block on the market and the ultra violet absorber was added in producing the blocks. Flexural strengths and absorption of the polymer concrete blocks were measured by the method regulated in the specification.

웹 주소 변환을 위한 URL 전달 서버

노상호,김상연,양희재,장세현 경성대학교 공학기술연구소 1999 공학기술연구지 Vol.6 No.-

We developed a URL forwarding server which links one's new domain name to existing Web site. With URL forwarding one can have more compact and easy URL for his/her Web address. The forwarding server is based on the redirection response provided by the HTTP protocol. This paper presents how a domain name server, HTTP server, and the forwarding server work together to transform one's Web address to another. The server is implemented on a Linux system and with little overheads it works very fast and efficiently.