점자블록 인식을 이용한 횡단보도 보행자 안전 시스템

최상범(Sang-beom Choi),윤여수(Yeo-su Yoon),이원영(Won-young Lee),박현준(Hyun-jun Park) 한국정보통신학회 2019 한국정보통신학회 종합학술대회 논문집 Vol.23 No.2

횡단보도에서 보행자 신호가 아닌 자동차 주행신호에 횡단보도로 진입하는 일부 보행자가 있다. 이를 방지하기 위해 현재는 적외선 센서를 횡단보도에 설치하여 경고를 해주는 방식을 채택해왔다. 적외선 센서는 설치된 센서의 범위만을 감지하지만 카메라를 이용하면 해당 구역 전체를 확인할 수 있기 때문에 더 용이하다. 따라서 본 논문에서는 보행자 신호등에 부착한 카메라에서 획득한 영상을 이용한 횡단보도 보행자 안전을 위한 시스템을 제안한다. 제안하는 시스템은 컴퓨터비전 기법을 사용하여 점자 블록 영역을 찾고 MOG2 함수를 이용하여 보행자를 검출한 뒤, 보행자가 점자블록 영역에 진입하는 경우 경고를 송출한다. 실험 결과 제안하는 시스템은 보행자와 점자블록 검출을 이용하여 보행자에게 안전한 장소로 유도하는데 효과적인 것을 확인하였다. There are some pedestrians who crossing the crosswalk when the traffic signal is red not green. To prevent this, an infrared sensor has been installed in the crosswalk to warn the pedestrians. The camera is more useful because the camera can see the entire area, while the infrared sensor can only detect within the installed sensor range. Therefore, in this paper, we propose a pedestrian safety system from an image acquired by a camera attached to a pedestrian traffic light. The proposed system detects the braille block area using computer vision technique and the pedestrian using the MOG2 function, and sends out a warning when the pedestrian enters the braille block area. Experimental results show that the proposed system is effective to guide pedestrians to a safe place using pedestrian and braille block detection.

Chitosan과 chitosan-cellulose를 이용한 차폐막의 골조직 재생유도능력에 관한 연구

계승범,손성희,최상묵,Kye, Seung-Beom,Son, Seong-Heui,Choi, Sang-Mook 대한치주과학회 1998 Journal of Periodontal & Implant Science Vol.28 No.4

Chitosan has been known as a wound healing agent. The purpose of this study was to evaluate the biocompatibility and guided bone regenerative effect of chitosan and chitosan-cellulose membranes. The effects of chitosan and chitosan-cellulose membranes on the growth and survival of human periodontal ligament cells were examined by rapid colorimetric MTT(tetrazolium) assay, and the tissue response and resorption pattern were observed by implanting the membranes into the subcutaneous tissue of the back of rats for 6 weeks. To evaluate the guided bone regenerative potential of membranes, the amount of newly formed bone in the rat calvarial defects(8mm in diameter) was measured by histomorphometry and radiomorphometry 1,2 and 4 weeks after implantation of membranes. Chitosan and chitosan-cellulose membranes showed no adverse effect on the growth and survival of human periodontal ligament cells. When membranes were subcutaneously implanted, inflammatory reaction was observed at 1 week and which gradually subsided 2weeks after implantation. Membranes remained intact throughout the experimental period of 6 weeks. Radiomorphometric analysis of the craniotomy sites revealed that chitosan and chitosan-cellulose membrane implanted sites showed increased radiopacity over control. Statistically significant differences with control were found in chitosan-cellulose membrane implanted group at 2 and 4 weeks, and chitosan membrane implanted group at 4 weeks(P<0.05). Histomorphometric data indicated a pattern of osseous healing similar to radiomorphometric analysis. There was a statistically significant difference between control and chitosan-cellulose membrane implanted group at 4 weeks(P<0.05). These results implicate that chitosan and chitosan-cellulose membrane might be useful for guided bone regeneration.

연구논문 : 포항시 마을 숲 조성실태 연구

이경락 ( Kyung Rak Lee ),최상범 ( Sang Beom Choi ),허상현 ( Sang Hyun Heo ) 한국환경과학회 2006 한국환경과학회지 Vol.15 No.7

전통 마을 숲의 관리 방안에 관한 연구 - 포항지역을 대상으로 -

이경락 ( Kyung Rak Lee ),최상범 ( Sang Beom Choi ),허상현 ( Sang Hyun Heo ) 한국전통조경학회 2006 한국전통조경학회지 Vol.24 No.3

구연산과 테트라싸이클린으로 처리한 치근면에서 rhBMP-2가 치주인대섬유아세포와 골아세포의 활성에 미치는 영향

심정민,한수부,설양조,이용무,김경화,계승범,최상묵,정종평,Shim, Jung-Min,Han, Soo-Boo,Seol, Yang-Jo,Lee, Yong-Moo,Kim, Kyeong-Hwa,Kye, Seung-Beom,Choi, Sang-Mook,Chung, Chong-Pyoung 대한치주과학회 2001 Journal of Periodontal & Implant Science Vol.31 No.1

The goal of Periodontal treatment is predictable periodontal regeneration. But until now, many products including GTR materials and growth factors are beyond of complete regeneration. BMP can induce ectopic bone formation when implanted into sites such as rat muscle and can greatly enhance healing of bony defects when applied exogenously. BMP can promote periodontal regeneration by their ability to stimulate new bone and new cementum formation. But little is known about optimal conditions required for the application. Root conditioning is used for bioacive root change so altered root surface provides a substrate that promotes chemotaxis, migration and attachment of peridontal cells encouraging connective attachment to the denuded root surface. The aim of this study is to investigate whether the acid conditioning change effect of rhBMP-2 on human periodontal ligament cell and osteoblast cell line. 288 periodontally involved root dentin slices are divided into 6 groups, each 48, 1)control, 2)treated with BMP, 3)treated with citric acid 4)treated with citric acid+BMP 5)treated with tetracycline 6)treated with TC+BMP. Each group was devided half, so 12 root dentin slices were seeded with periodontal ligament cells and 12 were seeded with osteoblasts. At day 2 and 7, cell number, protein assay, ALP activitiy was measured. To investigate morphology of cultured cells, SEM was employed. Statistical analysis was performed with SPSS 8.0 either t-test or ANOVA test. The results are ; Protein assay and cell number was slightly decreased in CA+BMP group compared to Ca group but it was not statistically significant and ALP activity was much more increased in CA+BMP group compared to CA group so there was no statistically significance between BMP and CA+BMP group and statistically significant compared to control group. Cell number and protein assay was slightly increased in TC group and ALP activity was much less the BMP group and CA group. Cell number and protein and ALP activity was not much increased in TC+BMP group. TC group and TC+BMP group showed cell morphology change in SEM. This results suggested that application of root surface with citric acid before BMP treatment might give better result in periodontal regeneration.

Metal-Organic Framework의 수소 흡착 메커니즘의 이해

이태범(Lee, Tae-Bum),김대진(Kim, Dae-Jin),윤지혜(Yoon, Ji-Hye),최상범(Choi, Sang-Beom),김자헌(Kim, Ja-Heon),최승훈(Choi, Seung-Hoon) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.11

Hydrogen adsorption mechanism onto the porous metal-organic frameworks (MOFs) has been studied by density functional theory calculation. The selected functionals for the predict ion of interact ion energies between hydrogen and potential adsorption sites of MOF was utilized after the evaluation with the various functionals for interaction energy of H₂C₆H₆ model system the adsorption energy of hydrogen molecule into MOF was investigated with the consideration of the favorable adsorption sites and the orientations. We also calculated the second favorable adsorption sites by geometry optimization using every combination of two first absorbed hydrogen molecules. Based on the calculation of first and second adsorption sites and energies, the hydrogen adsorption into MOF follows a cooperative mechanism in which the initial metal sites initiate the propagation of the hydrogen adsorption on the whole frameworks. In addition, it was found that the interaction strength between the simple benzene ring with hydrogen is significantly reinforced when the benzene ring has been incorporated into the framework of MOFs.

음성인식을 통하여 주문가능한 전자 메뉴판

손찬(Son Chan),이동준(Lee Dong-Joon),이종원(Lee Jong-Won),전병욱(Jeon Byeong-Uk),최상범(Choi Sang Beom),김상진(Kim Sang-Jin) 한국정보기술학회 2021 Proceedings of KIIT Conference Vol.2021 No.6

造景植物의 學名에서 屬名의 語源 硏究

崔相範 동국대학교 농림과학연구소 1994 農林科學 論文集 Vol.18 No.-

The purpose of this paper is to analyze the linguistic origin of the genus names of landscape plants in order to help students understand the physical characteristics of the plants through the botanical names. The plants under study here are 170 genus belonging to 70 families. This study includes the plants that are possible to use as landscape material as well as both the native and foreign plants that are already being used. Among the 70 genus, the names of 67 genus derive from the plant names(17 from the Latin names, 18 from the Greek names, and the others from Japanese and Arab names). The names of 44 genus stem from the physical shapes of plont organs (14 from the shape of flower, 13 from the shape of fruit, 12 from the genus of other plants, 3 from the shape of leaf, 2 from the shape of stem). 38 genus adopt names from persons who found, collected, and loved the plants. The others (30 genus) adopt names from other characterristics of the plants. such as color, taste, native area, ingredient, and legend associated with the plants.

造景植物의 學名 構成에 관한 硏究

崔相範 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

Specific epithets of Scientific name in Landscape plants has one of three genders: masculine(m), feminine(f), or neuther(n). The gender of a spedific epithets is decided by the gender of its genus. Specific epithets are named after aperson who discover its species to honor and memorialize the discoverer. Using the name of discoverer should be based on Internatonal Code of Botomical Nomenclature.(ICBN) Specific epithets represent their color of flowers and fruits, habit of growth, and the shape of leaf, discovered place, number of leaves and flowers. Soecific epithets represent bud, flower, fruit, leaf, root, seed, seedling, stem. Prefixes often represent number, position, shape, size in part of plants. Specific epithets represent color of plants, direction geography, habit, habitat seaeon, size and so on.

건설현장 근로자들의 안저예방실태와 사고예방과의 개선요인 조사연구

심규범,남철현,최상복,이송권,이정희,이순자,문기내,김문환 慶山大學校 保健福祉硏究所 2003 保健福祉硏究 Vol.8 No.-

This study was conducted to examine aspects of health and safety education and demand level of safety education in construction job sites in order to provide direction of safety education development. The subjects of this study were 566 workers who were working in construction job sites located in Daegu City and Kyungbuk Province. Data were collected from June 1, 2002 to August 30, 2002. The results of this study can be summarized as follows. 1. According to safety education by experience methods, the proportion of education by lecture was highest (90.6%). The proportion of education by field practice was 13.1%. 2. Among the education methods which they thought as the most desirable method, the proportion of audio-visual education was 39.4% and the proportion of education by experience was 37.5%. Those who had more monthly income and higher education level preferred audio-visual education, while those who were younger and less educated preferred education by experience. 3. In the case of the contents of the safety education which they thought as the most important one, the proportion of enhancement of safety awareness and education of risk factors was highest (24.7%). The groups of older workers, having longer working period, and belonging to higher education level preferred these contents. 4. According to the factors which were most important to increase effectiveness of the safety education were workers' voluntary participation (27.7%), 40 to 49 years old (27.7%), and monthly income of one million, five hundred thousand won to one million, nine hundred ninety thousand won (32.0%). The proportions of lower educated workers and working as daily workers were also high. 5. The variable which most influenced the safety education was age. The safety awareness of construction job sites was the second highest influential variable. From above results, it is clear that the workers' participation in the safety education was low since most of the safety educations were formal education by lecture. Although they participated in the education, the education was also not effective because they compulsorily participated in it. Therefore, it can be concluded that effective alternative policies must be formulated.