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.

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.

경기북부 접경지역의 개발에 대한 기본구상

조세현,김정태,오상근 忠南大學校 地域開發硏究所 1997 地域開發論叢 Vol.9 No.-

The main purpose of this study is to suggest the primary way of planning in north Kyonggy adjacent to DMZ. For this study, the current situations of north Kyonggy were surveyed and analyzed in terms of land use, economic-industry structure, SOC development etc. The results are as followed. ① The aspects of environment conservation and land use should be considered at the level of development strategies. ② The development of growth poles and the infrastructure should considered in accordance with the national strategy of unification.

문장제에 대한 이해정도가 문제해결력 신장에 미치는 영향에 대한 연구 : 중학교 방정식과 부등식 단원을 중심으로

지재근,오세열 한국학교수학회 2000 韓國學校數學會論文集 Vol.3 No.1

The purpose of this thesis is that the students understand the sentence stated math problems closely related to the real life and adapted the right solving strategies try to find the solution to a problem. The following research problem were proposed. 1.How repeated thinking lessons develop the understanding of problems and influence the usage of correct problem solving strategies and extensions of problem solving. 2.There are how much differences of achievement for each type of sentence stated problems by using comparative analysis of upper class, intermediate class, and lower class for each level between the experimental and comparative classes. In order to conduct this research the classes were divided into three different level-upper class, intermediate class and lower class. Each level include an experimental class and a comparative class. The two classes (experimental class and comparative class) of the same level were tested on the basis of class division record with the experimental class repeated learning papers for two weeks were used to guide the fixed thinking algorism for each sentence stated math problems. Eight common problems were chosen from a variety of textbooks : number calculation problems, velocity-distance-time problems, the density of a mixture, benefit problems, distribution problems, problems about working, ratio problems, the length of a figure problems. After conducting this research experiment, The differences in achievement level between the experimental class and comparative class, were compared and analyzed through achievement tests made from the achievement test papers with seven problems, which were worth seventy points (total score). The conclusions of this thesis able as follows: Firstly, learning activities through the usage of repeated learning papers for each level class produce an even development of achievement level especially in the case of the upper class learners, they have particular differences (between experimental class and comparative class) compared to the intermediate level and lower classes. Secondly, according to the analysis about achievement development each problems, learners easily accept the strategies of solution through the formula setting up to the problem of velocity-distance-time, and to the density of the mixture they adapted the picture drawing strategies interestingly. However each situation requires a variety of appropriate solution strategies. Teachers will have to employ other interesting solution strategies which relate to real life.

Carbachol에 의한 닭 췌조직내 nitric oxide synthase 활성 및 methylated arginine 함량변화

유세근,남석우,박승희,남태균,서동완,한정환,홍성렬,이향우 성균관대학교 약학연구소 1994 成均藥硏論文集 Vol.6 No.1

The role of nitric oxide (NO) in the regulation of exocrine secretion was investigated in chicken pancreatic tissues. Nitric oxide synthase (NOS) in the pancreatic tissues were Ca^2+-dependent form. Treatment of tissue with L-arginine (10 mM) or carbachol (10^-5 M) showed the increase of pancreatic exocrine secretion, but that of D-arginine (10 mM) did not. ^3H-citrulline formation, cyclic GMP level and methyl arginine contents in the homogenates of pancreatic tissues treated with carbachol were not affected. Although the action mechanism of NO in the pancreatic tissues remains unknown, NO apparently participates significantly in the overall control of pancreatic secretory function.

성악골 절제후 유리피판술을 이용한 상악재건 3례 보고

박정일,한태근,최준,백세민 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.1

Malignant tumor of the head and neck can be treated by radical excision of the lesion. But the resultant facial deformity acts as a handicap in the patient's life. The quality of life is as important as the quantity. Therefore reconstruction of these patients is an important field in plastic surgery. We used 3 kinds of flap for reconstruction after maxillectomy. Two cases were late reconstruction with Rectus Abdominis myocutaneous free flap and parascapular free flap respectively. In remaining one case, immediate reconstruction was performed with rib bone graft and Latissimus Dorsi free flap. The results were satisfactory. But we found that ptosis of the flap is problem in all cases.

이동로봇의 동적 경로계획

이우송,오세봉,안용근,문정훈,한성현 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-

This paper propose a new path planning method for mobile robots. The creation method of the course approaches with the method of the frame line graph base where the calculation time becomes disturbance. The graph composition where is not the static course plan method of existing, a course search and repeats continuously changes a graph and proposes the course the dynamic routing plan method. The method which is proposed is composed of a course creation phase and a course improvement phase, each phase includes a graph composition and a course search process.

당뇨병 유발쥐혈청내 methylated amino acid의 함량 변화

김용기,유세근,남석우,이향우 성균관대학교 약학연구소 1993 成均藥硏論文集 Vol.5 No.1

In order to investigate the relationship between methylated amino acids and diabetes, we investigated the changes of serum concentration of methylated amino acids in serum of the experimentally induced diabetic rats. The diabetic symptom was induced by injectly alloxan 100 mg/kg intraperitoneally. The serum content of N^G-monomethylarginine(MMA), N^G, N^G-dimethyl-arginine(DMA) and N^G, N^G-dimethylarginine(D'MA) were analyzed by HPLC. The results are as followings ① There was no change in serum content of MMA in the diabetic group. ② But it was observed that the amounts of DMA and D'MA were increased remarkably in the diabetic group. Specifically, D'MA content was increased about 7 times in comparision to that of the control group. ③ However, the concentration of trimethyllysine in RBC was decreased slightly in diabetic group but not significant statistically.

주행로봇의 경로제어

이우송,오세봉,안용근,한성현 한국공작기계학회 2009 한국공작기계학회 춘계학술대회논문집 Vol.2009 No.-

This paper propose a new path planning method for mobile robots. The creation method of the course approaches with the method of the frame line graph base where the calculation time becomes disturbance. The graph composition where is not the static course plan method of existing, a course search and repeats continuously changes a graph and proposes the course the dynamic routing plan method. The method which is proposed is composed of a course creation phase and a course improvement phase, each phase includes a graph composition and a course search process.

Chromium(Ⅲ)의 전기화학적 환원에 관한 연구

김일광,김윤근,김세봉 圓光大學校 基礎自然科學硏究所 1987 基礎科學硏究誌 Vol.6 No.1

The electrochemical reduction of chromium(Ⅲ)in 1×10exp(-1)M sodium perchlorate and 1×10exp(-2)M sulfuric acid aqueous solution has been examined by polarography and cyclic voltammetry. The cyclovoltammetric results showed quasirreversible electrode processes that reduction of chromium(Ⅲ) proceeds by two electron transfer at first reduction step and second reduction step of one electron transfer followed to form chromium metallic state although the direct current polarogram shown to be a three electron transfer process in one reduction step. The height of reduction wave was suppresed and strongly shifted to the more negative potential in cationic surfactant(CTABr), nonionic surfactant triton x-100 and EDTA effects. In anionic surfactant NaLS solution, the height was increased while the half-wave potential shifted to the height negative potential.