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시각장애인을 위한 물품인식 제어장치의 설계와 제어방법에 관한 연구
서경덕 ( Kyung-duk Seo ),안광진 ( Kwang-jin Ahn ),안지윤 ( Ji-yun Ahn ),하경욱 ( Kyung-wook Ha ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2
2022년 등록된 장애인은 265만 3,000명으로 전체 인구 대비 5.2%를 기록했으며, 그중 시각장애인은 9.5%에 해당한다. 그들은 여가문화 활동, 대중교통 이용, 무인기 이용에 어려운 점이 있듯이 일상생활에 많은 불편한 점이 있다. 특히 제품의 미비한 점자 시스템으로 인한 문제점을 해결하기 위해 ‘물품인식 제어장치’를 고안했으며, 제품의 바코드를 스캔한 후 제품에 대한 정보를 점자로 출력과 동시에 음성으로 출력하여 시각장애인에게 올바른 정보를 제공한다.
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배정규,서경덕,서우창,서대화,Bae, Jeong Kyu,Seo, Kyung Duk,Seo, Woo Chang,Seo, Dae Wha 한국자동차안전학회 2022 자동차안전학회지 Vol.14 No.3
A V2X system can be a candidate as a means to increase the stability of autonomous vehicles. In particular, in order to implement a Level 4 or higher autonomous driving system, the application of the V2X system is essential. Wireless communication technologies applicable to the V2X system include WAVE and C-V2X. Currently, the V2X service most used by autonomous driving systems is a service that provides signal phase and timing information and since real-time characteristic is a very important, verification of this service must be done. In this paper, we measured the time delay characteristics for providing signal phase and timing information using WAVE and LTE communication, and proposed a TOD-based signal phase and timing information generation method without using V2X communication system. To analyze the time delay characteristics, RTT (Round Trip Time) was measured as a result of the measurement. Average RTT using WAVE communication was 5.84ms and was 104.15ms with LTE communication. As a result of measuring the error between the signal phase and timing information generated based on TOD and the actual traffic light state, it was measured to be -0.284~3.784sec.
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Thiopental Sodium, Propofol(Diprivan^�) 및 Midazolam이 안압에 미치는 영향
최정은,서경덕,서동선,최세진 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.1
Intraocular pressure(IOP) were measured during induction of anesthesia with thiopental sodium(n = 10), propofol(n=10), and midazolam(n=10). IOP were measured using a Schioetz tonometer before and after induction, and 1min and 3min after endotracheal intubation. All patients were divided into three groups as follows ; Group Ⅰ(n=10) : thiopental sodium 5mg/kg was administered intravenously for induction of anesthesia Group Ⅱ(n=10) : propofol 2mg/kg was administered intravenously for induction of anesthesia Group Ⅲ(n=10) : midazolam 0.2mg/kg was administered intravenously for induction of anesthesia Succinylcholine 1mg/kg were administered intravenously for endotracheal intubation in all groups. The results were as follows ; 1) Induction of anesthesia with propofol and thiopental sodium are associated with a significant reduction in IOP. 2) Induction of anesthesia with propofol is associated with more significant reduction in IOP than thiopental sodium. 3) Induction of anesthesia with midazolam is not associated with reduction in IOP. From above results, propofol can be used as effectively as thiopental sodium for general anesthesia in patients who undergo ophthalmic surgery.
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최세진,서경덕,조희경 충남대학교 의과대학 지역사회의학연구소 1992 충남의대잡지 Vol.19 No.2
Over the Past several decades blood and blood components have been increasingly, recognized as medication rather than innocuous fluids used to replace modest blood lose at operation. But blood transfusions have the potential for many harmful side effects. This study was undertaken to evaluate transfusion accordings to department, sex, preoperative hemoglobin values, blood type, transfusion amounts and blood component therapy. Of a total 34.906 operative cases, 5,793 patients who recived a transfusion during operation were analyze statistically at the Department of anesthesiology, chungnam National University Hospital from January 1985 to September 1992. The results were as Follows : 1) The numbers of transfused patient among the 34,906 operative cases were 5,793 cases (16.57%). 2) The number of male transfused was greater than of female and third decade patients was the greatest incidence among the transfused patients. 3) Mostly hemoglobin value in preoperative state was maintained more than 10 mg/dl (85.75%). 4) The blood types of transfused blood were in the great order of A, B, O, AB type. 5) The percentage of one pint transfusion was gradually decreased and 2~5 pints transfusion was greatest percentage (60.11%). 6) As the amount of blood transfused was increased, the percentage of blood component therapy was increased, and mixed case PRC and FFP was the greatest incidence (46.02%).
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