UHF 대역의 휴대전화 착신기능 제한 시스템의 설계 및 제작

남효덕,김종석,김병철 嶺南大學校 工業技術硏究所 2001 工業技術硏究所論文集 Vol.29 No.2

As demands grow for restricting use of cellular phones by attendants in the public places such as conference rooms, churches, and playhouses etc., a call blocking system against UHF band cellular signals is developed for other attendants who do not want to be disturbed by the phone rings. The idea of preventing a cellular phone from ringing was developed from the fact that the system radiates interferent signals having 0.1 to 0.05 watts of CW wave, makes it possible to increase the error rates of output signal of PSK modem, and hence makes the cellular phone Impossible to receive the right call signal. The system designed in this study was set up and tested in the several public places and found itself very effective.

중격측좌핵 및 선조체기저핵의 아미노산 함량에 대한 한쪽 뇌 해마 제거의 영향

남준철,김종규 순천향의학연구소 1996 Journal of Soonchunhyang Medical Science Vol.2 No.2

We analyzed the amino acid contents of fundus striatal and accumbens septal tissue in unilateral hippocampectomized rats by high performance liquid chromatography(HPLC). Thirty-one male rats were divided into hippocampal, cortical control and normal control groups. After a survival period of 7 days, the animals were sacrificed by decapitation. Two to three milligrams of tissue were removed from the nucleus fundus striati and the nucleus accumbens septi in ipsilateral or contralateral side of the brain. In the nucleus accumbens septi, the contents of glutamate were reduced significantly in the ipsilateral hippocampal group and increased significantly in the contralateral hippocampal group than in the normal control group and the cortical control group, while there were no significant differences between the 2 control groups. The contents of glycine were reduced significantly in the contralateral hippocampal group than in the normal control group and the cortical control group. But in the nucleus fundus striati, the difference of contents of all amino acids were nonsignificant. From the above results it is suggested that the ipsilateral hippocampus may exert a direct effect on the accumbens septi than the contralateral hippocampus.

敗醬草가 癌細胞柱에 미치는 影響

申大澈,權貞南,金瑩均,韓宗鉉,김재석,김재섭 동의대학교 한의학연구소 1997 동의한의연구 Vol.1 No.-

The purpose of this study was to investigate effect of water extract of Patriniae Herba on the poliferation of human cancer cell-lines. The effects of Patriniae Herba on the poliferation of A43l, HeLa, MOLT-4, K562 cells, Balb/c 3T3 cells, mouse thymocytes, splenocytes and human lymphocytes were estimated by MTT colorimetric assay, The results were as follows; 1. Patriniae Herbs did not effect A43l, HeLa, MOLT-4, K562 cells. 2. The cytotoxicity of mitomycin C on MOLT-4 cells was increased by the combination of Patriniae Herba. 3. Patriniae Herba inhibited the proliferation of Balb/c 3T3 cells. 4. Patriniae Herba stimulated the proliferation of thymocytes. 5. Patriniae Herba stimulated the proliferation of splenocytes. 6. Patriniae Herba stimulated the proliferation of human lymphocytes.

조선대학교 의과대학 유급제도 개선을 위한 예비조사

박종,박상기,박상학,도남용,송창훈,이승일,임성철 朝鮮大學校 附設 醫學硏究所 1998 The Medical Journal of Chosun University Vol.23 No.1

This is a pilot study to improve the flunk system, a self-reported questionnaire survey was done by 58 professors among a total of 94 professors at Chosun University Medical School in December 1997. The results were as follows : 1. In regard to the student's residence, 69% of professors answered that the current system was appropriate. For a proper method of flunking. 46.6% of the professors agreed to the introduction of retesting by the Academic Affairs Department and 44.8% of the professors agreed to the evaluation of academic achievement of each subject. 2. Sixty-seven point two percents of professors agreed to the changing of time of flunk. 43.1% felt at the end of course, 24.1% felt at midterm, and 25.9% felt that the current system. 3. In regard to flunking, 34.5% of professors thought the current system-if a student receives an F grade in to be one subject, he/she was flunked-was sufficient, but 65.6% of the professors felt needed there improvement. The method of improvement was considered was losing more than two credits-fail(32.8%), and losing more than four credits-fail(10.3%). 4. Eighty-four point five percent of the professors agreed to the necessity of flunking by grade point average(GPA) and 77.6% of the professors answered that the students who must re-register should take all designated subjects. 5. Seventy-two point four percent of the professors opposed summer or winter courses for students who flunk and 51.7% of the professors opposed the necessity of a management system for students. In conclusion, the professors in Chosun University Medical College recognized the necessity of improving the flunk system, especially, the time, method and record keeping. So a concrete follow-up study needed to improve the flunk system.

노즐직경이 디젤분무의 분산과정에 미치는 영향

고경남,문창은,허종철 濟州大學校工科大學産業技術硏究所 1996 尖端技術硏究所論文集 Vol.7 No.2

This experimental study has been conducted to investigate the effect of nozzle diameter on spray characteristics under the parameters of injection pressure and ambient pressure. The double flash method was used to visualize diesel sprays, and the results obtained in this study are as follows; The diesel spray is divided into smooth liquid core, disturbed liquid core and the chaotic region which is generated the droplets and the ligaments by spray overtaking. The transition point with spray tip velocity variation under the injection pressure of experimental rage in ambient pressure 3MPa is generated in earlier duration time as high spray pressure. Also, spray tip velocity is gradually decreased as the increase of the spray tip velocity.

호산구증가증을 동반한 혈관임파양 증식증

변영남,정필훈,윤영호,김종철 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.4

Angiolymphoid hyperplasia with eosinophilia(ALHE) is benign subcutaneous lesion that primarily affects head and neck region. It is characterized by single or multiple nodules in the subcutaneous tissue associated with eosinophilia in the peripheral blood. Kimura's disease, originally reported by Kimura et al., is similar lesion with ALHE in the clinical and histopathological aspects. There has been considerable controversy about the relation between Kimura's disease and ALHE. IN Korea, 26 cases of Kimura's disease and ALHE have been reported since 1975. We present a case of recurred ALHE occurring on the left cheek in a 58-year-old woman. Including this case, we summarized all cases that were reported as Kimura's disease or ALHE in Korea through literature review. We also give an outline of clinical and histopathological characteristics of cases reported in Korea.

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.

조선대학교 의과대학 의학과 학사편입학제도의 전향적 검토

임성철,박상기,도남용,박상학,이승일,송창훈,박종 조선의대 1998 The Medical Journal of Chosun University Vol.23 No.1

디젤분무의 분무특성에 관한 실험적 연구

고경남,허종철 濟州大學校 産業技術硏究所 1997 산업기술연구소논문집 Vol.8 No.2

This experimental study has been conducted to investigate spray mechanism of diesel spray under the parameters of injection pressure and ambient pressure. Also this study provides the information on effect of sac chamber. The results obtained in this study are as follows : The higher ambient pressure. the shorter length ofthe ligaments and atomization is happened droplet from ligament rapidly. The fuel which remain in sac chamber and orifice becomes projected liquid column of spray tip at initial stage. this is atomized by overtaking of spray tip for time elapsed.

의무고용제도 재설계 방안

김종진,장창엽,유완식,김언아,이정주,류정진,강필수,최종철,남용현,김윤삼 한국장애인고용촉진공단 고용개발원 2008 연구개발 Vol.- No.2

현행 우리나라 의무고용제도는 장애인구의 급격한 증가, 장애인차별금지 및 권리구제 등에 관한 법률의 도입 등 외부환경변화에 신축적으로 대처하지 못하고, 경증장애인 중심으로 의무고용제도가 운영됨으로써 중증장애인의 고용배제가 우려되고 있다. 본 보고서는 이러한 문제점을 해결하기 위해 의무고용제도의 일자리 확대와 고용증가를 통해 중증장애인의 고용기회를 확대할 수 있는 정책방안을 제시하기 위한 것이다. 본 보고서는 (1)의무고용 사업체의 의무고용 산정인원에서 자립장애인 제외 (2)현행 2% 의무고용률을 3%로 상향 조정 (3)사업체가 고용하는 중증장애인에 대한 더블카운트(2배) 가산제도 도입 (4)의무고용률 미달 사업주에 대한 부담금 차등징수의 4가지 정책방안, 제도 합리화 차원에서 장려금 지급방식의 개선과 사업주의 장애인에 대한 인식개선 방안을 제시하였다. 정책방안에 대한 영향분석 결과 의무고용 적용대상자에서 비장애인과 고용상 차별되지 않는 자립장애인(6등급)을 의무고용 산정인원에서 제외하는 경우 의무고용 사업체의 고용인원은 23,296명이 감소해 고용률은 1.35%에서 0.88%로 감소하였고, 의무고용 사업체의 장애인 일자리 수는 미고용인원의 증가로 15,152개가 증가하였다. 그리고 기금은 부담금이 631억원 증가하고, 장려금이 352억원 감소해 983억원의 수지개선 효과가 발생하는 것으로 나타났다. 의무고용 사업주의 의무고용률 3% 인상 방안은 의무고용률 상향 조정에 따른 미고용인원의 증가로 장애인의 일자리 수는 43,101개가 증가하고, 기금은 부담금이 1,709억원 증가하는 반면, 장려금은 293억원이 감소해 2,002억원의 수지개선 효과가 발생하는 것으로 나타났다. 의무고용 사업주가 고용하는 중증장애인을 2인으로 더블카운트 하는 중증장애인 가산제도의 도입은 의무고용 사업체의 장애인근로자가 67,261명에서 79,685명(1,2등급만 포함시 75,685명)으로 증가하여 고용률은 1.35%에서 1.60%(1.2등급만 포함시 1.52%)로 증가하고, 의무고용률 미달 사업체의 미고용 인원이 감소하여 2,745개의 일자리가 감소하였다. 그리고 기금은 부담금이 118억원 감소하는 반면, 장려금은 418억원이 증가해 536억원의 수지악화가 발생하는 것으로 나타났다. 의무고용률 미달 사업체의 고용유인을 위해 고용률 1.0%미만, 1.0-1.5%, 1.6-2.0% 미만에 대해 각각 20%, 10%, 5%의 할증률을 순차적으로 가중하여 부과하는 부담금 차등징수 방안(3차년까지의 효과임)은 1.0% 미만 사업주는 86만원, 1.0-1.5% 사업주는 64만원, 1.6-2.0% 미만 사업주는 58만원의 부담기초액을 부과할 때 고용률은 1.35%에서 1.53%로 증가(1.6-2.0% 미만 사업주는 의무고용률 2%를 달성)하고, 미고용인원의 감소로 장애인의 일자리는 8,836개가 감소하는 것으로 나타났다. 그리고 기금은 부담금이 58억원 감소하여 수지는 악화되었다. 이상의 네 가지 방안은 모두 장애인의 고용증대를 가져온다는 측면에서는 유효하지만, 장애인의 일자리 확대를 통한 중증장애인의 고용을 증대한다는 정책목표를 달성하는 데에는 한계점을 안고 있기 때문에 어느 한 정책만을 선택하기보다는 정책효과를 극대화하기 위해 정책결합(policy mix)을 이용하는 것이 바람직함을 제시해주었다. 즉, 의무고용 적용대상자 조정방안/의무고용률 상향조정 방안과 중증장애인 가산제도/부담금 차등징수 방안을 조합 또는 모두 동시에 선택하는 경우 의무고용 사업체의 장애인 일자리 수의 확대와 중증장애인 고용을 동시에 달성하고, 기금의 수지균형도 달성 가능한 것으로 나타났다. The mandatory employment quota system of Korea does not reflect the changing external factors such as the growing population of people with disabilities(PWDs) and the enactment of the Anti-discrimination Law for People with Disabilities. The current employment quota system focuses on people with mild disabilities thus excluding people with severe disabilities from employment. The purpose of this report is to propose a plan in order to increase employment opportunity for the severely disabled through the reform of the employment quota system. This report analyzes the following : (1) exclude grade 6 disability from mandatory employment quota (2) raise the employment quota from 2% to 3% (3) implement the double counting for employers that employ the severely disabled (4) differentiate the amount of levy collected from corporations that are unable to meet the quota. The aforementioned plans are useful in that they increase employment for people with disabilities. However, there are limitation to reaching the policy objectives by increasing jobs for people with severe disabilities. Therefore, to maximize the effects we should consider policy mix of these four policies. In other words, by mixing the policies of adjusting the employment quota target/raising the quota ratio and implementing the double count/differentiating the amount of levy, we can achieve the goal of increasing jobs for the severely disabled and maintain equilibrium between incomings and outcomings.