Histochemistry에 의한 Muscle Study와 임상적 의의

張淳喆,李載澤,金柱鎬,鄭鶴仁 대한임상병리사협회 1984 임상병리사회지 Vol.16 No.1

고강도 콘크리트 기둥부재의 횡보강효과 산정에 관한 연구

장일영,박훈규,송재호 金烏工科大學校 1998 論文集 Vol.19 No.-

High-strength concrete represents a rather recent development in concrete materials technology. In recent years, a considerable amount of research work has been carried out on the mechanical and structural properties of high-strength concrete. However, there has been little research on the behavior of hight-strength concrete columns laterally reinforced with square ties and subjected to compressive loading. With the addition of transverse reinforcement which lead to triaxial compressive state, ductility behavior of high-strength column member shall be increased. In this study, rational quality and quantity evaluations were made to investigate the ultimate strength and strain ductility by confinement effect of tie reinforced hight-strength concrete columns subject to uniaxial loads. Concrete failure theory at the triaxial compressive state and statistical results based on conventional experimental data were applied for this propose. Up to 185 columns, tested under monotonically increasing concentric loading, were evaluated in terms of strength and strain ductility. Analytical results show that confinement stress, maximum compressive strength, and increase of strain equations were developed with the consideration of concrete strength, yield strength, spacing, volumetric ratio, and configurations of tie reinforcement.

IMT-2000 기지국용 이중 편파를 위한 광대역 단일 소자 안테나 설계 및 특성 개선

장원호,박주성,태재훈,이윤현 한국항행학회 2002 韓國航行學會論文誌 Vol.6 No.3

본 논문에서는 편파 다이버시티 특성을 갖는 이중 편파(Dual-Polarization)방식의 INT-2000(1.885㎓-2.17㎓)기기국용 안테나에 사용할 수 있도록 기존 Folded Dipole안테나의 특성을 개선하였다. 제작된 안테나는 PCB기판에 몰디드 다이폴 안테나 구조에 적층 형태를 갖는 마이크로 스트립 안테나로서 각 단자별 반사게수가 -20㏈ 이하, 이중 편파 구조에서 중요한 규격인 단자간 분리도는 -20㏈ 를 가지며, 이들은 전 대역에서 약 7 dBi 이상의 특성을 보였다. Design and characteristic improvement of existing folded dipole antenna is presented to adopt W-CDMA(1.885~2.170 ㎓) wideband antenna radiators. The antenna structure has +/- 45 degrees dual polarization. In order to overcome the narrow bandwidth and low gain characteristic typical of the microstrip antenna, double layered structure was employed. The antenna achieved below -20 ㏈ reflection coefficients each ports. -20 ㏈ of port isolation, above 7 dBi of gain, providing evidence that the proposed design can be used in the W-CDMA service frequency band antenna.

천연염료를 이용한 무늬염법

장영호,이재범 한국공예학회 1999 조형디자인연구 Vol.2 No.2

The natural dye substance largely consists of plant, animal and minerals materials, which we can easily and naturally be obtained all around us. It has been widely used all around the world for numerous years. The natural dye substance appears to have a lot of benefits that enable the dyed material to show natural merits which in turn enables the dyed materials to exhibit their natural colors. It may have a little bit of a damaging effect on the human body itself. , in comparison to the synthetic substances. It also causes hardly any environmental pollution because of the natural chemicals and costs much less to dispose of. on the other hand it also has disadvantages, that is it's difficult to get various kinds of patterns on the cloth. The dyeing process is done by full saturation, which is only available for commercial use because of the low ratio of dyeing success. The product of the dye substance is limited, the reliability of the dyed material is low, and it is easy to make dark and light colors. For the reasons mentioned above, the use of the natural dye is decreasing except for special uses. Nowadays it is very difficult to come across this method because of he appearance of synthetic dye substances. The dyeing process by saturation into the natural dye substance is done by putting the material, ready for dyeing, into the dye-water once or several times repeatedly. It also has several problems, which include, the complexity of the dyeing process, the low reliability of the dyeing substance and the dependence on manual work done by observing with the naked eye. Eventually, these problems caused the slow down of industrialization. Furthermore, the mixed use of dye substances and it's catalyst caused to develop the natural dye substance and to increase the dye's adhesiveness to the material. Those are the disadvantages of it's use. This is the method to study silk screen printing by using natural dye substance to make a specific patterns on the clothing using various methods. The silk screen printing needs to have the material dyed by the saturation method. Then the silk screen is printed by subtracting the colors to make another shade of color without using any additional dye substance. It only uses the natural dye substance mixture and it's catalyst. It will help to print specific patterns on the material. Therefore it's effects are available for using in various kinds of silk screen printing and to make different kinds of patterns equal to the natural dye substance method, which is both saturating and then printing.

최근 5년간 급성 A형 간염으로 입원한 환자들에 대한 입원 내용 분석

장재영,유병욱,조용진,오정은,홍성호,조주연 순천향대학교 의학연구소 2009 Journal of Soonchunhyang Medical Science Vol.15 No.1

Abstract Background : Due to improvements in Korea's sanitary conditions, antibody rates to the hepatitis A virus is decreasing rapidly and admission due to the disease is increasing, Patients who were admitted for hepatitis A during the last 5 years were selected and yearly differences in admission, clinical picture, medical fees, and differences according to age and gender were analyzed. Methods : Patients who were admitted to the Seoul Soonchunhyang University Hospital during the 5 year period between May of 2003 and April of 2008 and tested positive for IgM anti-HAV were selected and their medical records retrospectively analyzed. Results : 156 subjects [91 male (58%), 65 female (42%) were selected. The average age was 29.2 years (range; 21.4-37), average admission period 12.6 days (range; 12.5-1 7.7) days, and average medical fees 2,295,151 (range; 932,097-3,658,205) KRW(Korean Won), Yearly incidence rates were as follows : 10 for May, 2003 to April, 2004, 14 for May, 2004 to April, 2005, 23 for May, 2005 to April, 2006, 69 for May, 2006 to April, 2007, and 41 for May, 2007 to April, 2008, The maximum value median of AST, ALT, and bilirubin during admission was 989 IU/L, 1999 IU/L, and 5.6 mg/dL each, Each factors were all positively correlated with the patient's age. Conclusions : Recent decrease in antibody positivity of the hepatitis A virus and subsequent surge of acute hepatitis A is a cause of rising socioeconomic costs. A large scale epidemiologic research on whether HAV vaccination should be made mandatory and health insurance applied seems to be needed. Key words : Hepatitis A, Age, Medical fees, Vaccination

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.

지식 기반 교육컨테츠 저작시스템

장재경,김호성 한국컴퓨터교육학회 2004 컴퓨터교육학회 논문지 Vol.7 No.2

e-Learning에서 교수-학습자들 간에 형성되는 지식들을 체계적으로 관리하여 효과적인 교수-학습을 수행할 목적으로 교수자들이 교수 설계 이론에 따른 다양한 강의들에 교육 컨텐츠를 보다 쉽게 저작할 수 있는 시스템을 개발하였다. SCORM 표준에 따라 학습객체 간 관계를 설정하여 저작된 컨텐츠는 학습자가 학습내용을 개념화하는데 도움을 줄 것이다. 시맨틱 웹의 RDF를 적용하여 학습객체 간의 관계를 설정함으로써 지식맵을 구성하였고, 교수자가 해당 분야에서 사용되는 단어를 등록하여 일종의 어휘사전을 만들 수 있는 온톨로지를 도입하였다. 학습자의 이해도와 성취도를 고려한 개별학습을 제공하기 위하여 도입된 상호작용점을 따라 학습자마다 개별적인 학습맵이 구성되어 학생 개인의 학습활동과 이해도를 평가할 수 있다. For the purpose of an effective instruction-learning process by systematic management of knowledge between instructor and learner in e-Learning, we have developed the authoring system in which the instructor is able to author easily on various lecture frames according to the instructional design theory. The authored contents with the relations among the learning objects based on SCORM standard would help learner to conceptualize the contents. A knowledge map is constructed on the relations among the learning objects using RDF of the semantic web. We introduce the ontology in which the instructor can make a dictionary of terminology by registering the words of the teaching area. The learning activity and comprehension of students can be assessed using each student's learning map along the interaction points which are introduced to present the individual learning by considering each student's capacity of understanding and achievement.

요추부 척추협착증 수술환자에서 극돌기간 연성고정물 사용군과 비사용군의 치료결과 비교

김재도,장재호 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.1

Background : To compare of the clinical and radiologic results between microscopic decompression(MD) and MD with Device for Intervertebral Assisted Motion(DIAM) in lumbar canal stenosis. Materials and Methods : The retrospective evaluation was performed after surgery of stenosis. MD with DIAM was performed in 17 cases(Group A) and MD in 20 cases(Group B). In radiologic evaluation, checked the preoperative and postoperative disc height, intervertebral foraminal dimension, lumbar lordotic angle and instability by Panjabi. In clinical evaluation, preoperative and postoperative pain was checked by VAS. Disability was checked by RMQ(Roland Morris Questionnaire) and sf-36(PF). Results : In radiologic results, disc height changed from 11mm to 13mm in Group A(11mm to 11.8mm in Group B)(p=0.669). Intervertebral foraminal dimension was changed from 20.6mm to 22.3mm in Group A(19.5mm to 20.5mm in Group B)(p=0.536). Lumbar lordotic angle was changed from 15.40 to 14.20 in Group A(14.80 to 19.50 in Group B)(p=0.033). Instability score was improved from 0.9 to 0.2 in Group A(1 to 0.2 in Group B)(p=0.642). VAS score improved in group A from 10 to 2(9 to 2 in Group B)(p=0.612). On sf-36(PF), the values changed from 34/100 to 58/100 in Group A(30/100 to 58/100 in Group B)(p=0.535). Conclusion : Using dynamic interspinous stabilizer(DIAM) appears to be a useful and effective methods in surgery of lumbar canal stenosis with better radiologic results than MD only, but lumbar lordotic angle was decreased, slightly

韓國人의 各 臟器組織中 靑酸鹽의 微量分布에 關한 硏究(Ⅱ)

張成吉,金恩浩,金英雲,李鎭勳,柳在薰,權五星,金明德,吳世珍,金由那 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.-

제주지역 관광수입 통계에 관한 조사연구 : 여행경비기준산출을 중심으로 The Cheju Island Case

장성수,송재호 한국관광정책학회 2000 觀光政策學硏究 Vol.6 No.1

To make the efficient tourism policy and manage the tourism business is it necessary that the tourism statistics should precisely be drawn up, and the tourist and tourism receipts, the fundamental items of tourism statistics, be estimated precisely and periodically. This survey, which is based on the above recognition calculates the criteria of the per capita tourism expenditures for the purpose of precisely measuring the tourism receipts in cheju island. In addition, the criteria of tourism expenditure and tourism receipts officially published by the Cheju Provincial Government and Cheju Travel Association is compared and analysed. According to the integration of the survey analysis executed four times, per capita tourism expenditure except the round air fare is surveyed 261,175won for the group tourist, 137,544won for the school excursion, 580,204won for the honeymoon, 293,418won for the family tourist, 235,007won for the individual tourist, 2,165,561won for Japanese, 473,007won for Chinese, and 440,683won for the English-Speaking tourist. This results indicates that all travel patterns except the school excursion is higher than the official criteria of Cheju Province Office. Estimating the tourism receipts of Cheju island in 1999 based on the criteria of tourism expenditures suggested by this survey is estimated 1,745,200,000,000 won including the one-way air fare, which is more than 700,000,000,000 won compared to 1,295,000,000,000 won which is the criteria of Cheju Provincial Government. The contents of this study are as follows : I. Purpose of this study, Ⅱ. Conceptual system of the tourism receipts and expenditures, Ⅲ. Analysis of the tourism statistics in Cheju Island, Ⅳ. Survey Design : modelling and sampling, Ⅴ. Results and Implications, Ⅵ. Concluding remarks.