6차와 개편된 7차 교육과정 중학교 과학 교과서 생물영역에 대한 비교 분석

장은영,조현욱,김종홍 順天大學校 師範大學 附屬 科學敎育硏究所 2002 科學과 敎育 Vol.10 No.-

The purpose of this study is to compare and analyze the biology area of the 6th and the revised 7th curriculum in the middle school The 6th curriculum emphasized the research activities. It also gave emphasis on the biological materials in our surroundings, field studies, open questions and various applications and the participation in scientific events, while the new curriculum points on the ability to group either between classes or within classes. In―depth and supplementary differentiated curriculum in the 7th curriculum makes "level―based differentiated curriculum" possible and stresses the synthetic research activities, which deal with fundamental notions and the research processes. Looking into the degree of emphasis for each scientific area, the new textbooks have 12 chapters, but the old textbooks have 4 chapters. The allotment of each scientific area is almost same in the new textbooks, through matter (22.7%) takes up less pages than other areas. In the old textbooks, the number of pages allotted for biological subjects is 28.4% and takes up more pages than other areas. The content dealing with biological area comprises 67.5 pages of the new textbooks and 77 pages of the old textbook. The items analyzing constituents for the research activities appear in the new textbooks. These constituents are planning observing and assuming, investigating, reading and building ideas. The common experiments in both textbooks are 22 in the new textbooks, and 11 in the old textbooks.

치료용 방사선의 입사각에 따른 광섬유 방사선량계의 체렌코프 빛 측정 및 분석

장경원,조동현,유욱재,신상훈,서정기,이봉수,박병기,문주현 제주대학교 방사선응용과학연구소 2008 방사선응용과학연구소논문집 Vol.22 No.-

In this study, we have measured scintillating light generated in a fiber-optic dosimeter by high energy photon and electron beams using a charge-coupled device. The intensity of Cerenkov lights are also measured and characterized as functions of incident angles and energies of the high energy beams from a clinical linear accelerator. To minimize or remove Cerenkov light, a simple subtraction method using a background optical fiber and wavelength discrimination method using optical filters are investigated. Also, the intensities of Cerenkov light induced by high energy photon and electron beams are compared.

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.

한국 어린이에서 하악 유절치와 그 계승 영구치의 선천적 결손 간의 관계

김현진,현홍근,김정욱,이상훈,김종철,한세현,장기택 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.1

많은 연구에서, 유치와 그 계승 영구치의 선천적 결손 간에는 상당한 연관관계가 있는 것을 보고하였다. 그러나 하악 전치부에서, 유치의 선천적 결손에도 불구하고, 그 계승 영구치는 정상적으로 존재하는 증례가 임상적으로 종종 관찰되기도 한다. 본 연구의 목적은 한국 어린이에서 하악 유절치와 그 계승 영구치의 선천적 결손 간의 상호 연관관계를 평가하는 데에 있다. 2005년 1월 1일부터 2008년 9월 5일까지 서울대학교치과병원에 내원하여 파노라마 방사선사진을 촬영한 6세 이하의 남녀 어린이 총 14,307명을 대상으로 하악 전치부의 치아양상을 관찰하여 유치와 영구치의 선천적 결손 관계를 평가하여 다음과 같은 결과를 얻었다. 1. 하악 유절치의 결손률은 0.24%였으며, 하악 유절치가 존재 시 후속 영구치가 존재할 승산(odds)은 7163.5였으며, 유절치의 결손 시 후속 영구절치가 존재할 승산(odds) 0.79였다. 2. 하악 유절치 결손의 증례 중 후속 영구치가 모두 존재하는 경우는 44.12%였다. 유절치의 양측 결손 시 후속 영구치가 하나라도 존재할 승산(odds)은 유절치 편측 결손 시에 비하여 1.57 배였다. 3. 유절치 결손이 있을 때 유절치의 편측 결손일 승산(odds)은 여자가 남자에 비해 2.2 배였다. 또한, 유절치 결손이 있을 때 후속 영구절치가 존재할 승산(odds)은 남자가 여자의 경우에 비하여 2.22 배였다. Many studies have shown that there is a strong relationship between the congenitally missing primary teeth and their succedaneous permanent teeth. However, especially in case of lower anterior region, we can observe the existence of permanent teeth even though their precedent primary teeth were missed at times. The purpose of this study was to reveal the relationship between the congenitally missing primary lower anterior teeth and their succedaneous permanent teeth in Korean children. Total of 14,307 children, under 6 years of age, who attended the department of pediatric dentistry, Seoul National University Dental Hospital, Seoul, Korea from January 1st 2005 to September 5th 2008 were radiologically examined using the panoramic x-ray in order to analyze the relationship between the congenitally missing primary lower anterior teeth and their succedaneous permanent teeth. The results were as follows : 1. The prevalence of congenitally missing lower anterior teeth in primary dentition was 0.24%. The odds ratio of both the primary and permanent anterior teeth being present was 7163.5 and only the permanent anterior teeth being present was 0.79. 2. The percentage of all succedaneous permanent teeth being present was 44.12% in cases of missing lower primary anteriors. The odds ratio of at least one succedaneous permanent teeth being present in cases of bilateral primary anterior teeth missing was 1.57 times more common than in cases of unilateral primary teeth missing. 3. The odds ratio of primary missing teeth being unilateral was 2.2 times higher in females. Moreover, the odds ratio of succedaneous permanent teeth being present in cases of primary teeth missing was 2.22 times higher in males.

원광 뇌졸중 등록 자료를 통한 허혈성 뇌졸중의 임상 양상과 위험인자

박현영,장혁,박성욱,김요식,조광호 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.2

Background: To investigate clinical features and risk factors of stroke patients who lived in Korean rural area, we analysis Wonkwang Stroke Registry and compared with other studies. Methods: We filled out Stroke Registry in the consecutive patients with acute ischemic stroke from march 1997 to February 1999. We analyzed demographic data, risk factors and subtypes of stroke. All patients were divied into 3 groups according to their age. Stroke subtype was classified into large artery atherosclerosis(LAA),small vessel occlusion(SVO), cardioembolism(CE), stroke of other determined etiology(SOE), and stroke of undetermined etiology(SUE) by TOAST(Trial of Org 10172 in Actue Stroke Treatment). Results: Five hundred nine patients were included in Wonkwang Stroke Registry from march 1997 to February 1999. Mean age was 65.47±0.48 years old. The ratio of males to females was 1 : 0.78. SVO was the most frequent subtype(49%) of ischemic stroke, and then followed by LAA(27.5%), CE(7%), SOE(8.1%), and SUE(8.4%). The internal carotid artery(ICA) territory was involved in 59.3% patients. Vertebrobasilar artery territory involvement was noted in 37.5%, and 3.2% of patients showed multiple artery territory involvement. All patients had risk factor of ischemic stroke except for 14 patients. Mean number of risk factors was 1.7/patient. Hypertension(62.1%) was the most frequent risk factor, and follwed by smoking(26.3%), diabetes mellitus(25.9%), and hyperlipidemia(25.55%). Conclusions: These results showed that the proportion of ischemic stroke subtype was not concordant with other studies. It may be caused by different mode of living and ethnic difference. This study may afford further information on the characteristics of Korean rural area stroke.

광섬유 방사선 센서와 EBT 필름을 이용한 심부선량 백분율 측정 및 비교

조동현,장경원,유욱재,신상훈,이봉수,문주현,박병기 제주대학교 방사선응용과학연구소 2008 방사선응용과학연구소논문집 Vol.22 No.-

In this study, fiber-optic sensor is fabricated to measure PDD of CLINAC. As a scintillating light generated by a high energy X-ray from the medical LINAC is measured using photo diode amp system, It is expected that a high-resolution, real-time fiber-optic dosimeter for medical LINAC can be developed.

서울대학교치과병원 장애인진료실에서의 치과치료 분석

이현정,김영재,김정욱,장기택,이상훈,김종철,한세현 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.2

전신마취하에서의 치과치료는 자발적인 협조가 불가능하거나 전신적인 문제가 있는 경우, 다수의 치료를 한 번에 하고자하는 경우 등에 행해진다. 이 연구는 서울대학교치과병원 장애인진료실에서 외래 전신마취하에 행해진 환자와 치과치료를 분석함으로써 보다 나은 장애인 진료 시스템을 위한 방안 제시에 도움이 되고자 하였다. 2002년 6월 11일부터 2006년 12월 31일까지 장애인진료실에서 치료 받은 432명의 환자들을 대상으로 조사한 결과 15세 이하의 환자가 50.46%로, 소아 및 청소년 환자가 높은 비율을 차지하고 있었다. 진료과는 보존과, 소아치과, 구강외과, 치주과, 보철과 순으로 나타났으며 치료내용을 보면 보존치료와 발치가 주를 이루고 있었다. 또 2회 이상 전신마취를 시행한 환자가 14.1%나 되었다. 본 연구는 장애인 환자를 위한 보다 포괄적인 치과 치료 및 진료과들 간의 긴밀한 협진 체계를 구축하고 필요한 인력과 설비를 보충함으로써 장애인 환자들에게 보다 보존적인 치과치료와 편안한 치료 환경을 제공해야 할 필요성을 제시하고 있다. Seoul National University Dental Hospital opened The Clinic for The Disabled to provide dental treatment under outpatient general anesthesia. 432 patients underwent general anesthesia for dental treatment. The informations such as the pattern of dental treatment, the reasons of general anesthesia, the characteristics of the patients were analyzed. Followings are concluded. 1. The patients below 15 years old made up 50.60%. 2. The reasons for general anesthesia included mental and physical disabilities, systemic disease, dental phobia, and so on. 3. Restorative treatment was the most common procedure with the average of 9.7 teeth treated per one patient. 4. 62(14%) patients underwent general anesthesia for dental treatment more than once. 5. The efforts for better multidisciplinary system to provide more comprehensive and effective dental treatment including periodic recall check, preventive treatment for handicapped patients are necessary.

안면비대칭 환자에서 하악의 측방변위와 두개관형태 사이의 연관성

신상욱,이상한,장현중 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.4

This study was intended to perform the relationships between mandibualr lateral deviation in facial asymmetry patients and morphology of the cranial vault. In 30 patients(males 14, female 16) using submento-vertical cephalograms that were taken in the pre-operaticve state and posteroanterioir cephalograms that were taken in centric occlusion before, immediate and long term after surgery. 1. Mean mandibular deviation was about - 3.12°and mean of absolute measurement was about 2.50°on the submento-vertical cephalograms. 2. On the submento-vertical cephalograms, there was no significant difference between non-deviation and deviation side but it had tendency that deviation side was larger than non-deviation side on the frontal portion of cranium(Y10 to Y6) and deviation side was samller than non-deviation on the temporal portion of cranium(Y5, Y-1 to Y-5). 3. Mean mandibular deviation was about 1.40°and mean of absolute measurement was about 3.95°on the posteroanterioir cephalograms. 4. There was statistical significance on the influence of surgical change(PT2A-PT1A) to the relapse(PTLA-PT2A)(p<0.05). The more increasing of the change, the more relapse on the posteroanterioir cephalograms. 5. There was no statistical significance on the influence of degree of mandibular deviation to morphology of the cranium on the submento-vertical cephalograms. But it had tendency that the more mandibular deviation, the larger the non-deviation side on the anterior cranium and deviation side on the posterior cranium(p>0.05). 6. There was statistical significance on the influence of the degree of mandibular deviation on the posteroanterioir cephalograms to the difference between non-deviation and deviation side. The more increasing of mandibular deviation, the larger the non-deviation side on the Y4 to Y-6(p<0.05). 7. There was no statistical significance on the influence of difference between non-deviation and deviation side to the relapse on the posteroanterioir cephalograms. But it had tendency that the more increasing of the differece between non-deviation and deviation side, the more increasing the relapse on temporal of cranium.

광섬유 집합체 센서를 이용한 6MV 광자선의 반음영 및 심부선량백분율 측정

신상훈,장경원,조동현,유욱재,서정기,이봉수,문주현,박병기 제주대학교 방사선응용과학연구소 2008 방사선응용과학연구소논문집 Vol.22 No.-

In this study, a fiber-optic bundle sensor has been developed using water-equivalent organic scintillating fibers for photon beam measurement. Beam penumbra and percent depth doses(PDD) are measured according to the depth of the photon beam. This sensor has many advantages such as high resolution, real-time measurement and ease of calibration over conventional radiation measurement devices.

한국인에서 CC-SIT와 비교한 KVSS Test의 임상적 유용성 평가 : 예비연구 Pilot study

김진국,장현종,임채형,남태욱,심대보 건국대학교 의과학연구소 2003 건국의과학학술지 Vol.13 No.-

Background and Objectives: Sniffin' Sticks test is the test of nasal chemosensory performance based on pen-like odor dispensing devices. KVSS(Korean Version of Sniffin' Sticks) Test was developed as the "Korean olfactory test" using the odorants which are familiar to Korean. Authors evaluated the clinical validity of KVSS Test compared with CC-SIT (Cross-Cultural Smell Identification Test) in Korean. Materials and Methods: The subjects of this study were 25 normosmic volunteers who were divided into five groups according to age. Each group was 5 normosmic volunteers. And they consisted of 12 men and 13 women. KVSS Test and CC-SIT were used for the evaluation of olfactory function. Results: Our study showed the negative correlation between age and olfactory function test (CC-SIT score, KVSS Test I score and KVSS Test II score). Normosmia rate of KVSS Test was more higher than that of CC-SIT. Also KVSS Test had more familiar items for Koreans compared with that of CC-SIT. CC-SIT score and KVSS Test score showed showed the positive corrclation. And each test revealed high reliability in test-retest evaluation. Conclusion: The KVSS Test can be used as an olfactory function test for Koreans.