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金世煥 江原大學校附設 體育科學硏究所 1991 江原大學校附設體育科學硏究所論文集 Vol.- No.16
만보계를 이용하여 수업중 이동거리와 촉진법 및 herat telermeter법에 의한 심박수의 측정결과로부터 대학의 일반 체육수업중의 운동의 양과 질에 관하여 검토했다. 보다 운동강도를 높이기 위하여 용구의 능률적 준비, 간단한 설명, 연습회수를 많게 하기위한 지도법의 연구, 비활동적인 학생을 개별 지도 및 동기부여 등에 의하여 수업에 적극적으로 참여시키는 방법등에 관한 연구가 필요하다고 생각된다. 심박수나 최대 산소섭취량 등의 생리적 부하강도와 주관적 운동강도와의 관련성을 정확히 파악하여, 지도하고자 하는 종목의 운동이 어느정도의 운동강도인가를 지도자가 이해하는 것과, 수업중의 발한, 안색, 호흡상태 등의 주관적 운동강도를 파악하여 운동량을 조절하는 것이 필요하다고 생각된다. 학교현장에서 요구되는 것은 수업 전개중에 운동량을 확보하기 위한 지도자의 지도법의 개발이 요구되며, 이를 위하여 심박수의 특성을 유효하게 응용할 필요가 있다고 생각된다.
A Minimalist Approach to the Syntactic Phenomena in Complement Small Clauses in English
김세환,송홍기 한국생성문법학회 2007 생성문법연구 Vol.17 No.1
This paper explores the syntactic phenomena in small clauses in English, and investigates into the derivations of small clauses. We show that two distinct operations, "Spec-head agrement" and "multiple Case checking", at two distinct levels of representation are required for feature agreement in small clauses in the Minimalist Program framework, while a single syntactic operation Agree is sufficient for both overt ϕ-feature agreement and Case assignment in small clauses in the Minimalist Inquiries framework. This result thus supports the framework of Minimalist Inquiries as improved grammatical theory. We propose that the null copula BE mediates between subjects and predicates of small clauses in inducing agreement that holds between these phrases.
WiBro 망을 이용한 2.5/3.5/5.5 GHz m-WiMAX 시스템 무선 측정용 주파수 변환기 개발
김세환,전국진 대한전자공학회 2011 電子工學會論文誌-TC (Telecommunications) Vol.48 No.2
For measuring quad-band module system using WiBro network, frequency converter was developed. The size of the fabricated frequency converter is 3.1 cm × 3.1 cm × 0.4 cm. Noise figure of the receiver part of the frequency converter was 2.62 ∼ 3.45 dB, EVM of that is -37.5 dB ∼ -34.5 dB. And EVM of the transmission part was -42.5 ∼ -35.5 dB. Quad-band module was fabricated with the developed frequency converter. Testing the quad-band module in 2.3 GHz WiBro network results the excellent internet connection for 2.5 GHz, 3.5 GHz and 5.5 GHz band. WiBro 망을 이용한 쿼드 밴드 모듈 시스템을 측정하기 위해서 주파수 변환기를 개발했다. 제작된 주파수 변환기의 크기는3.1 cm × 3.1 cm × 0.4 cm이다. 주파수 변환기 수신부의 잡음 지수는 2.62∼3.45 dB였으며, EVM은 -37.5∼-34.5 dB로 측정되었다. 그리고 송신부의 EVM은 -42.5∼-35.5 dB로 측정되었다. 개발된 주파수 변환기와 함께 쿼드 밴드 모듈을 제작하였고,2.3 GHz 와이브로 망에서 쿼드 밴드 모듈을 테스트한 결과, 2.5 GHz, 3.5 GHz, 5.5 GHz 대역에서 원활한 인터넷 연결이 가능했다.
김세환,Kim, Sei-Hwan 한국금형공학회 2008 한국금형공학회지 Vol.2 No.1
Restriking method is to add to process in order to get the correct size and high precision accuracy of product which is formed in pre-process. This method is widely used at bending work and drawing work. Restriking die is particularly design and used as restriking process is performed. Therefore, production cost is increasing as one process or a two process are added. In this paper, punches and die block of square shell drawing die which could be performed drawing work and restriking process by using only one die are designed in order to solve these factors. The structure of sectional die which can integrate drawing die and restriking die was developed.
합금공구강(STD 11)의 방전가공면 변질층 제거에 관한 연구
김세환,Kim, Sei-Whan 한국금형공학회 2007 한국금형공학회지 Vol.1 No.1
This paper has comparatively analyzed the characteristics of the machined surface of a specimen made by machining Die Steel STD11 and a specimen obtained by W-EDM steel. If a press die is manufactured through W-EDM, products of shapes that cannot easily be made through machining can be manufactured easily. However, the life of the press die is significantly reduced compared with the press die made through machining. This is believed to be caused by the deformed layer that has occurred on the surface of the press die that was made through W-EDM. The roughness of the 2 specimens was measured, and it was learned that the distribution of the roughness of the specimen made through the 1st W-EDM was rough.
각통 드로잉용 펀치와 다이구멍의 각반지름 설계에 관한 연구
김세환,Kim, Sei-Whan 한국금형공학회 2008 한국금형공학회지 Vol.2 No.4
This paper describes $R_p,\;R_d,\;R_c,\;R_{cp},\;R_{cd}$ for design and manufacture of die by comparing the results. Results of this study could be reduced from three processes to two processes and drawing can be conducted using one die set by modifying structure of the punch head and die plate. Oil canning phenomenon can be prevented when circle blanking or ellipse blanking in blanking drawing. $R_c$, the important factor of drawing process was able to evaluate properly in designing of product.
Morphine과 Fentanyl이 포함된 환자조절진통이 Atracurium에 의한 근이완의 회복에 미치는 영향
김세환,김정호,김두식,류시정,장태호,김경한,한옥식 고신대학교(의대) 고신대학교 의과대학 학술지 2006 고신대학교 의과대학 학술지 Vol.21 No.1
Background : Even minor degrees of residual neuromuscular block can compromise the muscles involved in maintaining patency of the airway, and can attenuate the ventilatory response to hypoxia. Opioids in patien卜controlled analgesia (PCA) may also cause respiratory problem. The purpose of this study is to evaluate the influence of PCA on the SpO2, TOF(train-o卜four) ratio and head-raising tests following intraoperative atracurium blocks. Methods : 60 patients aged from 20 to 65 in ASA class I and II were divided into control and PCA groups. Patients received atracurium for tracheal intubation(0.5 mg/kg) and maintenance of relaxation (0.2-03 mg/kg/hr乂 Pyridostigmine ().15 mg/kg and glycopyrrolate 0.2 mg for reversal of block. PCA group received infusion of drug-mixture(80 ml) 1 ml hourly after bolus dose of morphine 5 mg. Drug-mixture consisted of fentanyl 600 ug,morphine 30 mg, ketorolac 90 mg and saline for vehicle The results of SpC)2, TOF ratio and 5 sec-head raising tests 20min after administration of reversal drugs were evaluated. Results : IV-PCA with morphine and fentanyl did not depress the SpO2)TOF ratio and the ability to raise the head. Conclusions : IV-PCA with morphine and fentanyl shows no deleterious effects on the recovery of atracurium block.