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배현진 ( Bae Hyun Jin ),장근영 ( Jang Keun Young ),안윤규 ( An Yun-kyu ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
This paper proposes an automated crack evaluation technique for a high-rise bridge pier using a climbing robot. The proposed technique enables to automatically detect and quantify the bridge pier cracks even where cannot easily access by human for visual inspection. To achieve it, high quality images are obtained by scanning the vision cameras embedded on the climbing robot along the bridge pier surface. Then, a feature extraction-based image stitching algorithm is newly developed and applied for establishing the entire region of interest (ROI) images. The ROI images are then processed with a semantic segmentation algorithm for automated crack detection. Finally, the detected cracks are precisely quantified by a crack quantification algorithm. The proposed technique is validated using in-situ test data obtained from Jang-Duck bridge located at Gangneung city, South Korea. The test results reveal that the proposed technique successfully evaluate the bridge pier cracks with precision of 90.92 % and recall of 97.47 %.
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
시멘트 종류별 콘크리트의 적산온도에 의한 강도예측에 관한 연구
장종호,나철성,김재환,김용로,길배수,남재현,김무한 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
The purpose of this study is to exhibit fundamental data which can apply to quality and process management of structure concrete using special cement in the construction field investigating strength prediction by maturity method of concrete according to cement types. The activation energy value was derived from the experimental study that experimental factors were selected as W/C ratio of 45%, the kinds of cements of 3 levels of O.P.C, H.B.C, H.S.C and curing temperature of 3 levels of 5℃, 20℃, 35℃. Also, after investigating relationship between compression strength and equivalent ages of concrete according to cement types, the strength prediction was investigated by maturity method. As the above of results, differences between the prediction strength by strength prediction equation and the actual measurement strength were lower, therefore it is considered that the strength prediction by maturity method is possible not only concrete using normal portland cement but also concrete using special cement.
배동석,이장명,윤종보 釜山工業大學校 1995 論文集 Vol.37 No.-
The process data are integrated and utilized for the production management, with the rapid development of analog measurement technology and with the wide spread of computer users. This trend draws more attention to the process data integration system which makes it possible to improve the quality of products, to classify and count the products automatically and to provide the basis for the production plan through the analysis and modification of process factors based upon the integrated process data. The system may be classified (either analog data of digital data) and the operating methodology of the system. Generally for the process control, it is necessary to set and monitor the reference and tolerance values of control-related process data, for example, temperature, rpm and pressure. In using the conventional analog controllers, it is not feasible to get the process data required for the quality control. Recently the digital controllers are developed. which have more accurate control capability and feasivility in getting the process data then the old controllers; the old are going to be replaced by the new. By utilizing the process data integration system, the analog controllers still can be used for the process control with the continuous quality improvement.
실록산 重合促進에 관한 대메칠썰포옥사이드의 效果에 관한 硏究
裵長淳 단국대학교 1987 論文集 Vol.21 No.-
Polymerization of siloxane can be implemented by application of acid alkali as catalysis however according to amterials various methods should be searched. The study revealed that for the polymerization of siloxane application of dimethylsuloxide has more effectiveness than that of acid, alkali. The experimentation has been undertaken by transformation of density of sulfoxide according to number of mole of siloxane and then experiment on the extent of polymerization caused by changes of temperature and time.
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.
장칠선,최배영 誠信女子大學校 生活文化硏究所 2008 生活文化硏究 Vol.23 No.1
This study aimed at examining university students' interest in etiquette instruction and an etiquette instruction plan and analyzing the relationship between the interests of the content of etiquette instruction and the instruction plan. The results of the study were summarized as follows: 1. University students received a mean of 3.48 point out of 5 in the measurement of their interest in etiquette instruction. Of 16 items on etiquette instruction, language etiquette received the most interest, followed by workplace etiquette, behavior etiquette, family etiquette, funeral rite etiquette, greeting etiquette, school etiquette, dining etiquette, wedding ceremony etiquette, reception etiquette, costume etiquette, festival etiquette, ancestral rite etiquette, public etiquette, birthday etiquette, and a coming-of-age ceremony etiquette. 2. University students received a mean of 3.69 point out of 5 in the measurement of their interest in the etiquette instruction plan. Of 10 items on the etiquette instruction plan, 'The content of etiquette instruction should be applicable in daily life' and 'Instruction place should be equipped with enough practice tools' took joint first place, followed by 'The content of etiquette instruction should be easy to understand', 'The instructor should be a professional etiquette educator', 'Students' opinions should be reflected in the content of instruction', 'Theory and practice were taught in parallel', 'Etiquette instruction-related media should be provided', 'Etiquette instruction-related information or material should be easily available', 'Theories on etiquette instruction should be systematic', and 'A specialized textbook should be used in etiquette instruction'. 3. The analysis of the relationship between the interests of the content of etiquette instruction and the etiquette instruction plan was performed. According to the results, each content of etiquette instruction had a somewhat high relationship with students' interest in the parallel of theory and practice, systematic theories, utilization of a specialized textbook, and easy availability of information/material.