이동 애드 혹 네트워크에서 QoS를 지원하는 AODV 라우팅 프로토콜

吳世德,趙榮泰,丁燦赫,金玄郁,李光培,姜景仁,朴京培,文泰洙,郭承郁,河載承 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-

Abstract - In this paper, we propose a bidirectional mobile Ad Hoc routing protocol based on AODV(ad-hoc on-demand distance victor routing) with QoS(quality of service) support. At presence, wireless mobile communication focuses on how to efficiently support mobility of users more than QoS guarantee. However, in order to satisfy requirement of various applications which have been or will be served, QoS guarantee between end point is a very important issue. The existing AODV routing protocol is implemented to use only BE (Best Effort) service. However, actual wireless mobile environment requires to reduce a waste of communication resources and meet with the real-time change of data paths by setting up routes with QoS support, considering available communication resources at each node in advance. Therefore, in this thesis, we propose an adaptive QoS support method using hello message in order to rapidly meet with the change of available communication resources and to smoothly perform route maintenance. For performance evaluation, we analyzed the average date reception rate. At that time, we used evaluation parameters such as node's mobility -stop time, hello message period, and packet priority, considering the node's mobility and the number of best effort/QoS data flows. As results, we found that with our proposed method the average data reception rate was increased 16.3% for 0 mobility-stop second case and 4.7% for 300 mobility-stop second case.

신장에 발생한 섬유육종 1례

이재규,손경민,권동득,오봉렬,류수방,박양일,최찬 大韓泌尿器科學會 2001 Korean Journal of Urology Vol.42 No.7

Pspice를 이용한 RL 회로 해석

오재근,박영국,박찬성,정영호 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

비장경색이 동반된 쯔쯔가무시병 1예

오종찬,이범주,장재현,원경준,박경희,김동민,박치영,정춘해 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.1

Tsutsugamushi disease is an acute febrile illness caused by Orientie. tsutsugsmushi. It is characterized by fever, myalgia, lymphadenopathy, and rash. And it can be easily diagnosed by characteristic eschar and serologic testing. Nearly all of the patients with tsutsugamushi disease improve with antibiotics such as doxycycline. However, the fatality rate of untreated cases is seven to ten percent. Splenic infarction is not common disease which is caused by occlusion of the main splenic artery or any of its branches. It is mainly caused by emboli that arise from cardiovascular disease, but sometimes by regional thrombosis associated with leukemia, myeloproliferative disorder, sickle cell anemia, pancreatitis, splenic torsion and septicemia. We experienced one case of tsutsugamushi disease with splenic infarction, which was improved after doxycycline treatment finished.

Hg₁-xMnxTe산화막의 홀효과에 관한 연구

오재근,최기영,송재흥,김영국,채건식,주유환,설정식,손인호,차성극,이상찬 慶南大學校 附設 基礎科學硏究所 1996 硏究論文集 Vol.8 No.-

HClO₄(pH:2) 수용액에서 양극산화 방법으로 HgMnTe(HMT)의 표면에 산화막을 형성 시켰다. 산화막의 두께는 SEM으로 측정하였으며 10㎛였다. 전류-전압 특성곡선을 얻어 산화 피크 전압으로부터 HTeO₂?, TeO?, HHgO₂? 막이 형성되었음을 알 수 있었다. 산화시키지 않은 HMT와 HClO₄수용액에서 산화시킨 HMT에 대해 Hall전압 및 자기저항을 각각 측정하였다. 홀전압과 자기저항은 HMT보다 HMT산화막에서 더 컸으며 이것은 HHgO₂? 공격자가 홀의 역할을 하고, TeO₄? 산화막은 전하의 포획도를 낮게하기 때문으로 생각할 수 있다. Anodic oxidation processes on HgMnTe surface has been studied in standard aqueous HClO₄(pH:2) solution. The 10㎛ thickness of the anodic oxide layers was measured by SEM. The Composition of the anodic oxide layers are evaluated from current-voltage(I-V) characteristic of HgMnTe Oxidation. The layers are composed of mixed oxide. ??, TeO₄, and?? in HClO₄solution. Transport properties have been investigated in HMT oxide layer made in HClO₄solution and virgin HMT samples at 300K. Hall voltage and magnetoresistance are greater in oxide layer HMT than virgin HMT. As a result, we know that the vacancy of ??in an anodic oxide layer acts as hole and the resulting oxide ?? layer exhibit a reduced degree of charge trapping and increase magnetoresistance.

靑皮가 마우스의 免疫細胞에 미치는 影響

殷載淳,吳贊鎬,鄭鉉雨 대한동의병리학회 1998 동의생리병리학회지 Vol.12 No.2

靑皮는 疏肝破氣 및 消積化滯하는 작용이 있는 약물로 대부분 氣滯로 인한 증상들에 사용되고 있지만 임상상 活血之劑와 配合하여 氣滯血瘀나 血瘀脇痛등에 應用되고 있다. 氣滯는 각종의 스트레스등으로 인하여 발생되어 血行을 不暢하게 하고, 심지어는 正氣까지도 손상시킨다. 正氣의 손상은 바로 免疫機能의 低下라고도 말할 수 있는데, 免疫이란 非自己로 인식된 異常細胞를 처리함으로써 個體의 恒常性을 維持하려는 현상을 말한다. 면역에 先天的 免疫과 T림프구 및 B림프구가 관여하는 特異性 免疫이 있고, 免疫作用에 관여하는 細胞로는 特異性 免疫에 관여하는 免疫細胞外에도 Macrophage, NK cell, 수지상 세포 및 랑게르한스 세포등을 들 수 있다. 뇌의 기능은 심장에서 방출되는 혈액의 공급에 의해 이루어지는데, 만약 혈액의 공급이 제대로 이루어지지 않으면 많은 질환들이 발생한다. 그 중 虛血性 腦疾患은 충분한 양의 혈액이 뇌를 공급되지 않거나 공급되고 있는 혈액내의 산소농도가 떨어져 발생하는 것으로써 임상적으로는 運動麻痺·知覺痲痺등 神經機能 消失등의 증상을 보이기 때문에 東醫學的으로는 이를 風病이라 하고, 風病은 대체적으로 陰虛나 血虛등으로도 발생할 수 있어 陰虛動風證 또는 血虛生風證등의 病證들이 있다. 그리하여 각종 氣滯로 인한 氣滯則血滯가 발생되거나 또는 正氣가 손상되어 氣虛則血虛하기 때문에 陰虛나 血虛등으로 인한 運動麻痺나 知覺麻痺가 발생한다. 이러한 이유등으로 本 硏究者들은 혈류장애 질환치료에 사용되는 韓藥材中 靑皮의 작용을 규명하는 硏究의 일환으로 靑皮가 면역기능에 어떠한 영향을 미치는가에 대하여 알아보기 위하여 동결건조된 靑皮를 마우스에 1일 1회씩 7일간 투여한 후 T-lymphcyte의 Apoptosis와 sub-population, 그리고 proliferation 및 Peritoneal macrophage의 nitric oxide 생성과 phagocytic activity를 관찰한 결과 DNA fragmentation과 sub-population에는 별다른 영향을 주지 않았지만 proliferation에 있어서는 증식이 촉진되었고, 복강 macrophage의 nitric oxide 생성과 phagocytic activity에 있어서는 NO는 감소하였으나 phagocytic activity는 현저히 증가하였다. 이는 靑皮가 NO 생성을 억제하여 phagocytic activity를 증가시킨 결과라 思料된다. 이상과 같은 實驗結果들을 통해서 볼 때 靑皮는 臨床的으로 각종 氣滯로 인한 正氣損傷과 血液循環障碍가 동시에 나타날 때에만 正氣를 보충해주는 役割을 할 수 있을 것으로 사료된다. The purpose of this research was to investigate effects of Citri Reticulatae Viride Pericarpium water extract(CRVP) on immunocytes in mice. The administration of CRVP did not affect apoptosis and sub-population of mouse T-lymphocytes, but increased the proliferation of T-lymphocytes. CRVP decreased nitric oxide production from mouse peritoneal macrophage, but increased a phagocytic activity of macrophages. These results suggest that CRVP does not affect T cell mediated immunity, but increases the phagocytic activity of peritoneal macrophages.

발포폴리스티렌비드를 사용한 경량콘크리트의 역학적 특성에 관한 실험적 연구

주재금,이종찬,오세출,유택동,정광량,서치호 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

The purpose of this study is to obtain basic data on the properties of the lightweight concrete within expanded polystyrene beads for various applications in the field. Inquiring into the change of the properties as altering cement matrix mixture and the capacity mixture ratio of expanded polystyrene beads, the mixture plane of this study is set up as W/C is fixed 50%, expanded polystyrene beads is increased 10% from 0% to 80% per 1m³ and the ratio of cement:sand in the cement matrix is 1:0, 1:0.5, 1:1. The results of this study are as follow. The slump as changing the mixture ratio of expanded polystyrene beads decrease smoothly until mixture ratio 50% but decrease rapidly being in excess of 50%. The density decrease regularly as the mixture ratio of expanded polystyrene beads increase but the ratio of strength decrease. The difference of cement matrix. The strength of cement matrix having more sand mixture ratio relatively decrease rapidly as increasing the mixture ratio of expanded polystyrene beads. It is judged decreased strength phenomenon as the quantity of coherent material created in the mixture decrease rapidly.

사군자탕이 L1210 세포를 이식한 마우스의 면역세포에 미치는 영향

殷載淳,金大根,柳東和,權鎭,徐龍勳,蘇俊魯,全焄,吳贊鎬 우석대학교 의약품개발연구소 1997 藥學硏究誌 Vol.2 No.-

The purpose of this research was to investigate effects of Sa-Kunja-Tang(SKT) on immune cells of L1210 cell-transplanted mice. The apoptosis and T lymphocytes subopoulation were tested using a flow cytometry, and the proliferation was tested using a MTT assay. Nitric oxide production from mouse peritoneal macrophage was tested using a Griess reagents, and the phagocytic activity of mouse peritoneal macrophage was tested using a lucigenin chemiluminescence. SKT suppressed apoptosis of T-lymphocytes induced by L1210 transplantation. SKT decreased nitric oxide production from mice peritoneal macrophages increased by L1210 transplantation, and the phagocytic activity decreased by L1210 transplantation. These results suggest that SKT suppresses T lymphocyte apoptosis and macrophage activity in L1210 transplanted mice.

전문대학 물리치료과 교육과정 개선에 관한 연구

이재학,박찬의,오승렬 高麗大學校 倂設 保健大學 保健科學硏究所 1983 保健科學論集 Vol.13 No.1

With a view to regulating proposals for model curricula by establishing the purpose and objectives of education for the department of physical therapy in technical colleges, and to proposing educational objectives and the syllabus on major subjects, we have conducted a comparative analysis of the proposals recommended by the World Confederation for Physical Therapy, those prescribed by the Department of welfare of Japan, model proposals of the Ministry of Education of Korea, and the current curricula and syllabus of local technical colleges, and obtained following conclusions: 1. The purpose of education of physical therapy has been established, which reads "The purpose of the education of physical therapy lies in teaching and studying the special knowledge and theories on the fields of health and medical treatment, practicing the treatment skills, and thus training physical therapists needed to promote the national health" and the objectives to achieve this purpose have been established as follows: (1) To foster such personality and character as needed as a democratic citizen, and to establish firm views of professional ethics. (2) To acquire expert knowledge and treatment skills with which to cope with the requirements of the rapidly growing fields of health and medical treatment. (3) To increase the capabilities to carry out physical therapists' duties effectively as health and medical treatment experts. 2. As to the compilation of curricula, the cultural courses have been divided into required subjects (16 credits) and elective subjects (more than 3 credits) for which more than 19credits(more than 23.75% of the credits required for graduation) must be completed, while the major courses have teen divided into the elementary subjects (12 credits), required subjects (20 credits), and elective subjects .(more than 29 credits), for which more than 61 credits (76.25% of the credits required for graduation). In particular, out of the elective subjects (29 credits), at least 15 credits must be completed for clinical training subjects (See Table 6). 3. The objectives of education by subject and the syllabus on major required subjects and clinical training subjects have been presented. (See Tables 7-13) 4. As results of comparative analysis of the subjects proposed by the World Confederation for Physical Therapy and those prescribed by the Ministry of Welfare of Japan, it is advisable to rearrange them gradually as four-year courses in order to improve special knowledge and treatment skills.

자궁암세포(HeLa)에 대한 사군자탕과 수종 항암제의 병용투여 효과

은재순,김현욱,소준노,오찬호,이송재 又石大學校 1993 論文集 Vol.15 No.-

The studies were conducted to investigate the combined effects of Sa Kunja Tang(SKT) and several anti-cancer drugs. The effects of SKT and several anti-cancer drugs on the proliferation of HeLa cells, human cervical cell line, was estimated by MTT colorimetric assays. The SKT extract inhibited the proliferation of HeLa cell at 10^-4g/ml. The inhibitory action of the mitomycin C(MMC), mercaptopurine(MCP) and 5-fluorouracil(5-Fu) treated group, respectively, on the proliferation of HeLa cell was increased by the SKT. When the mice were treated by the MMC, the number of leukocyte was decreased significantly at the 1st and 3rd day, but recovered at the 7th day. In the groups of the MMC treated with the SKT, the number of leukocytes was increased significantly than the group of the MMC treated only at the 3rd day. The SKT extract decreased the thymus weight of mice. The SKT extract increased the number of plaque forming cells(PFC), but the MMC treated group decreased the number of PFC. The combined treatment of MMC and the SKT increased the number of PFC significantly than the MMC treated group. The SKT extract increased the proliferation of T cells, but the MMC treated group decreased the proliferation of T cells. The combined treatment of MMC and the SKT increased T cell proliferation significantly than the MMC treated group. In conclusion, the results presented in this paper suggest that the SKT extract can decrease the dose of anti-cancer drugs on HeLa cell, and recover the side dffects of the MMC, such as leukopenia and immunosuppresion, without any intercalating the anti-proliferative action of the MMC in vivo.