IP/GMPLS/WDM 시스템 시험 방안

배세인,정기성,유명식 崇實大學校 生産技術硏究所 2002 論文集 Vol.32 No.-

In recent years, the IP trafic has been increased in an unprecedented rate, and as a result, the IP/GMPLS/WDM networking solution has been proposed for the next generation Internet, Now, the WDM systems have been deployed in the real communication networks, and at the same time, the standardization for the control plane of WDM network (e.g., GMPLS) has been actively in progress. It is expected that the WDM system with GMPLS control plane will be introduced in the market in near future. However, although it is necessary for the WDM systems to be verified working properly as recommended in the standards before the deployment, there has been a little work in this area. Thus, in this paper, we propose an efficient test procedures for the IP/GMPLS/WDM systems to minimize any networking problem of WDM systems when daployed. The test procedures are proposed for two area: the WDM system and the GMPLS control plane protocols, each of which covers the conformance test, the interoperability test, and the performance test.

3차원 두부방사선규격사진의 정확성에 관한 연구

배기선,박수병,손우성 대한치과교정학회 1997 대한치과교정학회지 Vol.27 No.1

본 연구는 교정 임상에서 흔히 촬영되는 측모와 정모 두부방사선규격사진을 사용하여 3차원적인 두개안면 형태를 재현하였을 때 그 방법의 정확성을 고찰해 보고, 기존의 측모 두부방사선규격사진과 비교하여 어떠한 차이를 보이는지 알아보고자 하였다. 이를 위해 두개안면 골격모형의 3차원 두부방사선규격사진을 형성하고, 선 계측과 각도 계측을 시행하였다. 여기서 얻어진 계측치들을 실제 계측치 및 측모 두부방사선규격사진에서의 계측치와 비교하여 다음과 같은 결론을 얻었다. 1. 3차원 두부방사선규격사진의 선 계측 평균 오차는 0.94±0.62mm, 평균 확대율 100.31±0.91% 이었으며 실제 계측치와 차이를 보이지 않았다(α=0.1). 2. 측모 두부방사선규격사진은 선 계측에서 평균 오차 6.44±1.48mm, 평균 확대율 106.99±1.45%로서 하악체를 제외한 모든 선 계측에서 확대를 보였다(P<0.005). 3. 3차원 두부방사선규격사진에서의 각도 계측은 평균 오차 1.22±0.82°, 평균 확대율 105.72±12.07%로서 실제 계측치와 차이를 보이지 않았다.(α=0.1). 4. 측모 두부방사선규격사진은 평균 오차 1.70±0.94°, 평균 확대율 106.35±15.70%으로 실제 계측치와 차이를 보이지 않았다(α=0.1). Conventional cephalometrics have inherent errors because their evaluation is performed in two-dimension for three-dimensional object. To compensate these errors, three-dimensional cephalograms - derivation of three-dimensional data from conventional lateral and postero-anterior cephalograms - were developed. In this study, the accuracy and precision of three dimensional cephalograms were determined by means of 10 linear and 12 angular measurements on 36 acrylic skull models and by the comparison of conventional lateral cephalograms. The results were as follows : 1. Mean difference between three-dimensional cephalograms and actual models in linear measurements was 0.94±0.62mm and mean rate of magnification of three-dimensional cephalograms was 100.31±0.91%. There were no statistically significant differences between three-dimensional cephalograms and actual models in linear measurements(α=0.1). 2. Mean difference between conventional lateral cephalograms and actual models in linear measurements was 6.44±1.48mm and mean rate of magnification of lateral cephalograms was 106.99±1.45%. There were statistically significant differences between lateral cephalograms and actual models in linear measurements(P<0.005). 3. Mean difference between three-dimensional cephalograms and actual models in angular measurements was 1.22±0.82° and mean rate of magnification of three-dimensional cephalograms was 105.71±12.07%. There were no statistically significant differences between three-dimensional cephalograms and actual models in angular measurements(α=0.1). 4. Mean difference between conventional lateral cephalograms and actual models in angular measurements was 1.70±0.94° and mean rate of magnification of lateral cephalograms was 106.35±15.70%. There were no statistically significant differences between lateral cephalograms and actual models in angular measurements(α=0.1). There were similarity between three-dimensional and lateral cephalograms in angular measurements.

설측 교정치료를 위한 셋업 모형 제작의 정밀도

배기선,손우성 대한치과교정학회 발행 2005 대한치과교정학회지 Vol.35 No.6

치아 모형 및 셋업 모형에서의 정확한 순설측 및 근원심 경사의 측정을 위해 개발된 셋업 모형 측정기로 4개의 제1소구치 발거 후 설측 교정치료를 시행 받은 22명의 성인 환자들의 치료 전후의 진단 모형 및 셋업 모형을 계측하여 설측 교정치료에서 간접 접착술식을 위해 사용되는 셋업 모형의 형태가 치료 결과에 미치는 영향을 알아보고자 하였다. 연구 결과 치료 전 진단 모형과 셋업 모형간의 상하악 6전치의 순설측 근원심 경사 차이는 각각 -3.93 ± 6.98°, 1.87 ± 5.79° 였으며 셋업 모형과 치료 후 치아 모형간의 차이는 -4.31 ± 5.91°, -2.16 ± 3.27°였다. 치료 후 치아 모형에서는 치료 전에 비해 상하악 전치부의 순설측 경사가 -8.24 ± 5.39°만큼 유의성 있게 변화되었다. 또한 facebow transfer 등을 통해 교합기에 치아 모형을 거상하지 않고도 셋업 모형 측정기만으로 치아 모형과 측모 두부방사선규격사진을 서로 연계하여 분석하는 방법을 고안하여 그 임상적용 가능성을 알아보고자 하였다. 이를 위하여 셋업 모형 측정기를 사용하여 진단용 모형으로부터 측정한 계측 게이지 각과 측모 두부방사선규격사진상에 동일한 계측점과 선분들을 작도하여 측정한 산술 게이지 각을 비교하였으며 그 결과 상하악 모두에서 유의성 있는 차이가 나타나지 않았다. 따라서 셋업 모형 측정기를 사용하여 측모 두부방사선사진에서의 계측치들을 진단용 모형에서의 계측치와 서로 연계시켜 분석하고 이를 셋업 모형 제작 시 반영하는 방법이 임상적으로 사용 가능함을 알 수 있었다. Making a precise and ideal set-up model is an essential part in the indirect bonding procedure for lingual orthodontic treatment. To evaluate the accuracy of the making a set-up model, 22 adult patients who received lingual orthodontic treatment with 4 bicuspid extractions were selected, and 3 sets of dental models (before, set-up, and after treatment) were measured using the set-up model gauge, an instrument for measuring the incllnation and acgulation of the clinical crowns on the dental model. Two sets of lateral cephalograms (before and after) from each patient were also evaluated. The mean difference between the before treatment model and the set-up model was -3.93 ± 6.98° for the inclination and 1.87 ± 5.79° for the angulation. And the mean difference between the set-up model and the after treatment model was -4.31 ± 5.91° labiolingually and -2.16 ± 3.27° mesiodistally. The after treatment model differed from the before treatment model about -8.24 ± 5.39° in inclination. There were no significant difference between the measured gauge that measured from the dental model using the set-up model gauge and the calculated gauge angle measured from the lateral cephalogram using constructed points and lines. Using the set-up model gauge, it is possible to evaluate the study model 3-dimensionally in relation with the patient's lateral cephalogram and establish whether the doctor's prescription or overcorrection is built in the set-up model precisely.

로지스틱 回歸分析을 利用한 交通事故의 影響要因 分析

배기목,고상선,이원규 대진대학교 1995 大眞論叢 Vol.3 No.-

Various traffic problems, such as accident, congestion, etc., are caused by the change of industrial structure, expansion of economic scale, growth of living standard, and motorization. Especially, traffic accident brings our affection because of numbers of fatalities and casualties to our livers and properties. We, human being, can only control the influence factor of disasterous traffic accident. Therefore, this study focuses on the study of analyzing the influence factor to nonassaulted and assaulted drivers by using Logistics Regression Analysis.

65세 이상의 노령층에서 고지혈증의 위험요인

김용배,장원기,황보영,김화성,안규동,이병국,이용진,김세훈,김승수,김승훈,김영록,김웅빈,이성수 순천향의학연구소 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

..

기흉 후 발생한 뇌동맥 공기 색전증 : 1예 보고

배일헌,한기석,차상훈,김성진,박길선,홍장수 충북대학교 의과대학 충북대학교 의학연구소 2003 忠北醫大學術誌 Vol.13 No.2

뇌혈관내 공기 색전증은 뇌혈관 조영술, 혈관내 도자술 시행시 발생하여 매우 심각한 합병증을 유발할 수 있다. 그러나 기흉의 합병증으로 발생한 경우는 보고된 적이 없다. 저자들은 기흉에 의하여 발생한 뇌혈관내 공기 색전증 1예를 경험하였기에 보고한다. Cerebral arterial air embolism is a potentially fatal event that may occur during the cerebral angiography and intravascular catheterization. The CT findings of cerebral arterial air embolism following pneumothorax have not been reported. We report a case of cerebral arterial air embolism following pneumothorax, and describe the CT findings.

UR에 대응한 지역농업의 발전방안 : 시설원예농업을 중심으로 With an Emphasis on the Greenhouse Horticulture Farming

배흥규,김진수,이영기,정순재,정해진,이상학 東亞大學校 1995 東亞論叢 Vol.32 No.-

The production of greenhouse horticultural products in the east region of Kyungnam province is now increasing, though the productions of other argicultural sectors have been rapidly decreasing. However, as the agricultural market lies under the big pressure of the WTO system having a goal of free trade of all commodities, greenhouse horticultural farming in the region also meets with many new problems. To identify problems and prepare development strategies of the greenhouse horticultural farming for the easten Kyungnam region, 10 villages in Kimhae, Yangsan and Miryang areas were selected as sample areas and 204 greenhouse vegetable or floriculture farms were surveyed using prepared questionaires during March-April 1995. From the analysis of the regional survey results, the following proposals are suggested for the development of regional horticultural farming : 1) There were still old-fashioned greenhouse facilities such as tunnel-type vynil house, no heating system and man-power watering. Greenhouse facilities should be modernized and automated in order to overcome the severe labour shortage problem constraining the increase of the greenhouse farming size and the enhance the degree of the commodity value by uniform quality control and year-round production. The money for the modernization and automation of greehouse facilities ned to be supported by the central government, because farmers lack the ability to fund the investment. 2) Not many farmers visited agricultural extension officers to obtain cultivation techniques of greehouse horticulture farming, because extension officers lack the manpower to help solving the greehouse farming problems. Agricultural system should be adjusted to the changing agricultural production structure. Extension manpower specialized in greehouse horticultural farming need be increased and located in the regional extension offices. 3) The major reason of farmer's pessimistic prospect for the future of greegouse horticulture was the possibility of overproduction of some horticultural products. To avoid the overproduction, new entrants to the greenhouse horticultural farming of products already culticated extensively should be limited and the government support must be given to the existing greenhouse farms and major production areas. 4) Local goverment, associated agencies, and farmers should work hard cooperatively to increase the export of horticultural products especially to Japan, the largest importer of agricultural products in the world. Local governments and associated agencies can provide informations related to the export market and provide the fund for the facilities of standardization of export products. Farmers must observe the export contracts, even though the domestic price exceeds the export price. 5) Collective marketing activities of greenhouse products were found to be mainly limited to transportation and handling of sales revenue. Central and local government should support the formation and collective activities of cooperatives of specilaized producers to enhance the bargaining power of farmers. 6) The role of local government should be increased. They should actively participate in the orientation of regional greenhouse farming and play an important role in the marketing of regional greenhouse products.

폐혈관상이 유지된 선천성 낭성 선종양 기형

배일헌,한기석,차상훈,김성진,박길선,이건국,홍장수 충북대학교 의과대학 충북대학교 의학연구소 2003 忠北醫大學術誌 Vol.13 No.2

선천성 낭성 선종양 기형은 태생 16주 이후 말단세기관지의 형성이 중단되어 미성숙기관지들과 중배엽성분들이 과도하게 증식하여 발생하는 드문 선천성 폐질환이다. CT소견은 낭종의 크기 숫자, 내용물 등에 따라 다양하나, 병변내에 정상적인 폐혈관이 보인 예는 전세계적으로 보고된 적이 없었다. 저자들은 역동적 흉부 CT상 균일한 저음영의 병변내에 정상 폐혈관상이 유지된 선천성 낭성 선종양 기형 1예를 경험하였기에 보고한다. Congenital cystic adenomatoid malformation(CCAM) is a rare pulmonary disease that is thought to be developed by abnormal proliferation of immature alveoli and other mesenchymal component from the abrupt halting of the terminal alveoli formation after 16 weeks of gestation. On CT scan, there are no consistencies regarding to size, numbers, and its contents but no cases were reported in past showing normal pulmonary vascularities. We reports a case of CCAM that showed normal pulmonary vascularities within the hypodense lesions on a dynamic chest CT

설갑상선 : 1 예 보고 A Case Report

한기석,배일헌,차상훈,김성진,박길선 충북대학교 의과대학 충북대학교 의학연구소 2003 忠北醫大學術誌 Vol.13 No.2

갑상선 조직 전체가 설기저부에 발생한 이소성 설갑상선 증례를 경험하였기에 그 방사선학적 소견을 문헌고찰과 함께 보고하고자 한다. 증례는 59세 여자 환자로 40 일전부터 발생한 음성 변화를 주소로 내원하였다. 이학적 검사에서 설 기지부 중앙에 회백색의 격막에 둘러 쌓인 3 cm 가량의 종괴가 있었으며, 종괴는 내장으로 돌출하여 구인두를 막고 있었다. 경부 전산화 단층촬영 측면 정찰 촬영에서, 설 기저부에 후방으로 돌출하여 구인두를 막고 있는 경계가 분명한 연부조직 종괴가 보였으며, 전산화 단층촬영 동맥기와 정맥기에 주변의 혈관과 비슷한 강하고 균일한 조영증강을 보이는 장경 2.5 cm의 원형 종괴가 있었다. 또한 갑상선이 있어야 할 경부 전방 공간에서 정상 갑상선 조직은 전혀 보이지 않았다. 설 기저부의 종괴에서 생검을 시행하였으며 병리 검사에서 갑상선 조직으로 진단되어 설갑상선으로 확진되었다. The authors report a case of ectopic thyroid that whole thyroid tissue was replaced by lingual thyroid. A 59-year-old female presented with dysphonia duration of 40 days. On physical examination, there was a 3 cm sized well encapsulated whitish mass protruding to oral cavity in milline of tongue to base. Computerized tomography of neck revealed homogeneously enhancing well marginated 2.5 cm sized round mass in the cecum of tongue base on arterial and venous phase. And there was no normal thyroid gland in lower anterior neck.

검도 경기에서 머리치기 공격의 성공요인 분석

민창기,배성제,이기청 한국운동역학회 2001 한국운동역학회지 Vol.11 No.1

The purpose of this study is to analyse the kinematical variables for the successful head attack factors in Kumdo bouts. The bouts included 34 games of 27 preliminary matches for President Cup held in November 2000 were filmed by two video cameras. The DLT technique of 3-dimensional image analysis for calculation of players and their bamboo sword in coordinates value and then the pace, speed, angle between bamboo sword and ground, angular velocity of bamboo sword's first part, attack distance, and stroke time that give impact on the outcome of the match when attacking head were analyzed. Among the kinematical variables that showed the significance in statistics were the pace, attack distance, and the stroke time. This finding implies that although their direct impacts were not significant the other factors could have indirect impact on attacking head. Thus, the attacker should practice for successful performance.