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- 저자 : Kim Yeong Wan (검색결과 569 건)
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최완영,김인순,최일영,정태준,이영열,고영혜,김남규 대한내과학회 1992 대한내과학회지 Vol.42 No.4
본 저자들은 백혈병으로 진단 받지 않은 환자에서 경막외에 침범하여 척수를 누르고 있고 수술후 방사선 치료로 증상이 좋아진 과립구상 육종을 경험하였기에 이에 보고하는 바이다. Granulocytic sarcoma is an uncommon tumor composed of immature cells of the granulocytic series, occuring in patients with AML and blast crisis of CML. It may rarely precede an acute myelogenous leukemia with an uniformly fetal course. We experienced a case of granulocytic sarcoma of extradural space presenting as spinal cord compression in a 31 years old female with no evidence of leukemia on the bone marrow and periphera1 blood. The tumor was located to the T₁-T₃ having narrowing pole after decompression laminectomy, patient received local irradiation to the residual tumor bed, and being followed at the OPD without evidence of leukemia.
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일부 종합병원 간호사에서 근골격계 자각증상과 관련 요인
김영옥,구정완 가톨릭대학산업의학센타 산업의학연구소 2002 韓國의 産業醫學 Vol.41 No.3
This study examined the influences that are made on the nurses' subjective symptoms of musculoskeletal system. The subjects were 626 nurses who worked for over 1 year at 5 general hospitals located in Seoul and KyeongKi Province. A standardized questionnaire asking nurses' subjective symptoms of musculoskeletal system was used. The collected data were statistically analyzed. The results were as follows: 1. As to nurses' complaint rate of subjective musculoskeletal symptoms by body region, the figure was the highest for upper/lower back with 87.2%, followed by shoulder 86.6%, leg/knee/ankle/foot 84.1%, neck 76.2%, and arm/wrist/hand 61.1% respectively. 2. Among the nurses who have under 2 years of experience at present, the complaint rate for upper/lower back was 92.0%. Among the nurses who have over 10 years of career at present, the complaint rate for shoulder was 100.0%, upper/lower back 94.1%, and leg/knee/ankle/foot 94.1%. For the nurses who have 5∼10 years of career at present, the complaint rate for shoulder was 89.7%, leg/knee/ankle/foot 85.6%, and neck 80.2%. 3. With regard to nurses' complaint rate according to their posts, the upper/lower back complaint rate of those who work at the hospice ward was 100.0%, at the emergency room 93.3%, and at the intensive care unit 91.5%. The shoulder complaint rate of those who work at the delivery room was 93.3%, the intensive care unit 91.5%, and the hospice unit 85.7%. The leg/knee/ankle/foot complaint rate of nurses who work at the hospice ward was 100.0% and at the delivery room and the nursery room 88.2%. The arm/wrist/hand complaint rate of nurses who work at the delivery room was 68.8% and at the intensive care unit 65.1%. The neck complaint rate of those who work at the emergency room was 87.8%, at the hospice ward 85.7%, and at the delivery room 82.4%. 4. With regard to nurses' musculoskeletal symptoms, the correlation with the variables including marital status, existence and nonexistence of housework assistants, family dependents, and average housework-time was not significant. A significant difference was found in cases where they are older or younger than norm, they work in special divisions, their breaktime is too short, or the work system is a 3-shift one(p<0.01) . 5. The cure rate for musculoskeletal symptom was 13.0%; the rate of absence from work was 2.4%. As for countermeasures for improvement of symptoms, the rate of relaxation was 82.6%, that of work-place or work post 1.4%, and the other cases occupied 2.0%. The rate of working difficulties was 12.2%; the rate of past complaints 23.2%. In conclusion, musculoskeletal complaints of the subjects were in order of back, shoulder, leg, wrist, and neck. The symptoms were affected by age, working career at the present department, the entire working career, working department, resting time, and the 3-shift system.
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최건영,고성화,김종옥,박은서,김완규,백경동,박동규 순천향대학교 부설 산업기술연구소 2021 순천향 산업기술연구소논문집 Vol.27 No.2
The Internet of Things, the core of the Fourth Industrial Revolution, is growing by incorporating various technologies into various fields. Among them, smart home systems that apply IoT technology to home environments are being actively studied. The home hub market, a means of communication for smart homes, is also developing at the same time. As the home hub market develops, security threats are also increasing accordingly. In this paper, 'Smart Home Mirror' is implemented by combining mirror and IoT technologies so that users can use them to communicate with smart home applications and other devices. To meet security issues, users in it are recognized by using face recognition technology and AES between all data communications in it is applied. The proposed device’s usefulness is approved by implementing it in smart home environments.
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송영화,류완하,김갑식 한국정보시스템학회 2004 情報시스템硏究 Vol.13 No.1
Fixed-mobile convergence services can be defined as the combination of previously separate fixed and mobile services, and networks and commercial practices. Examples of fixed-mobile convergence services include single voice-mail box, single number and unified messaging across fixed and mobile networks. Recently as more voice is transferred to mobile networks, convergence services between fixed and mobile become more important. In Korea convergence services are only starting to become established, and are likely to become an important part of any operator's offering. In this paper, we search the different levels of fixed-mobile convergence services and the trends and regulations for fixed-mobile convergence services in major countries. And at the same time, we also suggest the corresponding Marketing strategies by operators related to fixed-mobile convergence services.
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계기성,강동완,김광수,고영무,김윤주 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.1
The purpose of this study is to evaluate the use value of tooth ash-plaster mixture as an alternative material of the synthetic hydroxyapatite. For this purpose the author performed the experimental study to investigate the physical properties of sintered tooth ash-plaster mixture. The tooth ash was made by increasing procedure at 850℃, 900℃ and 950℃ for 20min, 40min and 60min respectively. The composition of tooth ash was analyzed using ICPSE and X-ray diffraction was done. The experimental specimens were molded to the cylindrical from 10mm high, 5mm diameter under the pressure of 1,000kg/㎠ for test of compressive strength values and 3mm high, 6mm diameter for test of diametral tensile strength values and surface microhardness values. Mixtures of tooth ash-plaster mixture was vacuum fired at 1,000℃ for 60min. The physical properties of the sintered specimen were examined and their microstructures were observed under the scanning electron microscope. The results were as follows: 1. x-ray diffraction showed the crystallization of tooth ash was developed as the incinerating temperature and time were increased, but the phase transformation following the incinerating temperature and time was not occurred. 2. The values of compressive strength of the sintered tooth ash-plaster mixture were the highest in case of incinerating temperature 950℃, the incinerating time 60min, and the tooth ash-plaster mixing weight ratio of 4:1. The higher tge incineration temperature and the longer the incineration time was, the more increased the compressive strengths were(p<0.01). 3. The values of diametral tensile strength of the sintered tooth ash-plaster mixture were the highest in case of the incinerating temperature 950℃, the incinerating time 60min, and the tooth ash-plaster mixing weight ratio of 4:1. The higher incineration temperature and the longer the incineration time was, the more increased the diametral tensile strengths were (p<0.01). The more decreased tooth ash-plaster mixing ratio was, the more increased the diametral tensile strength was, but there was not a significant difference statistically (p<0.01). 4. The values of surface microhardness of the sintered tooth ash-plaster mixture were also the highest in case of the incinerating temperature 950℃, the incinerating time 60min, and the tooth ash-plaster mixing weight ratio of 4:1. The higher the incineration temperature was, the more increased the surface microhardness values were, but there was not a significant difference statistically(p<0.01). The longer the incineration time was and the more decreased the tooth ash-plaster mixing ratio was, the more increased the surface microhardness values were. 5. The porosity and absorption of the sintered tooth ash-plaster mixture were the highest in case of the incinerating temperature 850℃, the incinerating time 20min, and the tooth ash-plaster mixing weight ratio of 3:1. The lower the incineration temperature was and the shorter the incineration time was, the more increased the porosity was. 6. There was a good wettability in the sintered tooth ash-plaster mixture under the scanning electron microscope.
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김정희 ( Kim Jeong Hui ),김준식 ( Kim Jun Sig ),어완규 ( Eo Wan Gyu ),김영일 ( Kim Yeong Il ),김선희 ( Kim Seon Hui ),김시영 ( Kim Si Yeong ),윤휘중 ( Yun Hwi Jung ),조경삼 ( Jo Gyeong Sam ) 대한내과학회 1993 대한내과학회지 Vol.44 No.4
연구배경 : 항원수용체유전자 재배열 현상의 분석은 림프구의 항원수용체인 B세포의 Immunoglobulin (Ig) 유전자와 T 세포의 T-cell receptor(TcR) 유전자가 림프구의 분화초기에 재배열되는 것을 이용한 방법으로 주로 림프종양의 확인과 분류에 이용되었다. 그러나 림프 종양과는 감별해야하는 급성골수성백혈병(AML)에서 Ig 혹은 TcR 유전자 재배열이 보고되고 있으며 그 의의는 확실치 않다. 방법 : AML 환자 25명의 진단당시의 골수세포에서 DNA를 분리하여 IgH 유전자 재배열 및 TcRβ 유전자 재배열을 Southern blot 방법으로 검사하였다. 세가지 제한효소(EcoRⅠ, BamHⅠ, HindⅢ)와 두가지 소식자(J_(H), Cβ)가 사용되었다. 결과 : 1) AML 환자 25명중 TcRβ 유전자 재배열이 2예에서 있었고(8%), IgH 유전자 재배열은 한예도 없었다. 2) 면역표지검사가 시행되었던 13명중 B 림프계표지인 CD19 양성인 환자가 3명, T 림프계표지인 CD2양성인 환자가 2명이었는데 모두 재배열이 없었다. TcRβ 유전자 재배열을 보였던 2명의 환자에서는 면역표지검사가 시행되지 않았다. 3) TcRβ 유전자 재배열을 보였던 2명은 각각 항암 화학요법후 14개월간 관해유지상태인 환자와 치료전 사망했던 환자였다. 결론 : 일부 AML에서 TcRβ 유전자재배열현상이 발견되었고, 항원수용체 유전자 재배열과 면역발현형이나 예후와는 연관이 없을 것으로 사료되며, 임상적인 이용을 위해서는 향후 좀더 광범위한 연구가 진행되어야 할 것이다. Background: Detection of the immunoglobulin (Ig) and the T cell receptor (TcR) gene rearrangements are useful markers for determining lineage and clonality in lymphoid malignancy. Antigen receptor gene rearrangements have also found in some patients with acute myeloid leukemia (AML). The significance of these rearrangements remains unclear. Methods: Ig heavy chain (IgH) gene and TcR beta chain(TcRβ) gene rearrangements were examined in leukemic cells from 25 patients with AML by Southern blot analysis. DNA was extracted from bone marrow aspirates. Three different enzymes (EcoRⅠ, BamHⅠ, HindⅢ) and two different probes(J_(H), Cβ) were used. Results: 1) TcRβ gene rearrangements were demonstrated in 2 of 25 cases(8%). But IgH gene rearrangement was not detected at all. 2) Antigen receptor gene rearrangement pattern of three cases with B cell antigen, CD19(+) and two cases with T cell antigen, CD2(+) were germline. Immunophenotyping was not performed in two cases with TcRβ gene rearrangement. 3) Of the patients with TcRβ gene rearrangement, one is alive in complete remission state after chemotherapy, and the other patient died before therapy. Conclusion: TcRβ gene rearrangement was demonstrated in some patients with AML. Antigen receptor gene rearrangment did not correlate with specific immunophenotype and prognosis. The clinical implication of antigen receptor gene rearrangement study need further study.
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Depth and Speed Control of Large Diameter Unmanned Underwater Vehicles
Do Wan Kim(김도완),Moon Hwan Kim(김문환),Tae-Yeong Kim(박호규),Tae-Yeong Kim(김태영) 대한전기학회 2017 전기학회논문지 Vol.66 No.3
This paper deals with the depth and speed controls of a class of nonlinear large diameter unmanned underwater vehicles (LDUUVs), while maintaining its attitude. The concerned control problem can be viewed as an asymptotic stabilization of the error model in terms of its desired depth, surge speed and attitude. To tackle its nonlinearities, the linear parameter varying (LPV) model is employed. Sufficient linear matrix inequality (LMI) conditions are provided for its asymptotic stabilization. A numerical simulation is provided to demonstrate the effectiveness of the proposed design methodology.
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