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      • KCI등재

        초ㆍ중학생의 자전거 임계강도 운동의 지속시간과 영향요인 분석

        이동규,이병근 한국운동과학회 2003 운동과학 Vol.12 No.4

        이동규, 이병근. 초·중학생의 자전거 임계강도 운동의 지속시간과 영향요인 분석. 운동과학, 제12권 제4호, 703-714. 2003. 본 연구의 목적은 초·중학생의 자전거 임계강도 운동의 지속시간과 영향요인을 비교 분석하여 임계강도의 유산소성 지표로서의 타당도를 검증하고 현장에서 정확한 임계강도 산출을 위한 지침을 제공하는 데 있다. 피검자는 초등학생과 중학생 남자 16명(12.7±1.2yrs), 여자 19명(13.0±1.8yrs), 총 35명이었다. 임계강도는 1∼10분에 탈진에 이르는 4회의 자전거 운동 후에 열량, 강도 및 시간의 함수 관계를 이용하여 산출하였다. 임계강도 수준에서 30분 동안 혹은 탈진까지 자전거 에르고미터 운동을 실시하는 동안 운동지속시간을 측정하였으며, 지속시간에 영향을 미치는 요인을 분석하였다. 남자 초등학생과 중학생, 여자중학생은 CP가 AT보다 7.7∼13.8% 점도 크게 나타났으나 여자 초등학생은 오히려 AT가 4.4% 정도 크게 나타났다. 임계강도 운동의 지속시간은 남학생이 22.12±7.42분이고, 여학생이 20.08±7.20분으로 남학생이 다소 길었으며, 초등학생이 22.45±7.50분이고, 중학생이 19.50±6.90분으로 초등학생이 다소 길었으나, 유의한 차이가 나타나지는 않았다. 임계강도 운동의 지속집단간 CP 영향요인을 비교한 결과 단위체중당으로 무산소성 역치 수준이 높은 집단일수록 임계강도에서 지속하는 시간이 증가하였다. 임계강도 운동의 지속시간과 CP 영향요인간의 상관관계를 분석한 결과, 임계강도 운동의 지속시간은 단위체중당 평균AT(/kg)와 CP 추정을 위한 단위체중당 평균강도(W/kg)와는 유의한 정적 상관관계가 나타났다. 또한 CP 지속시간은 평균CP(W)와 CP추정 최저강도(W)와는 유의한 부적 상관이 나타났다. 결론적으로 초·중학생을 대상으로 임계강도의 개념을 적용한 결과, 임계강도가 무산소성 역치를 미미하게 과대평가 하는 것으로 나타났으나, 유용한 유산소성 파워의 지표로 활용할 수 있겠다. 임계강도 운동의 지속시간은 단위체중당 평균AT(W/kg)와 CP 추정을 위한 단위체중당 평균강도(W/kg)와는 정적 상관이 나타났으며 평균CP(W)와 CP추정 최저강도(W)와는 부적 상관이 나타났다. Lee, D.K., Lee, B.K. Effects factors and exorcise time at critical power of bicycle ergometer of primary and middle school students. Exercise Science. 12(4): 703-714, 2003. The purpose of this study were to analyze the effects factors and exorcise time at critical power of bicycle ergometer of primary and middle school students, and to provide the guidelines for the measurement of critical power. The subjects were consisted of 16 males(12.7±1.2 yrs), 19 females(13.0±1.8 yrs) on primary and middle school. The critical power were calculated by regression analysis according to the relationship among work, intensity and time after four cycle ergometer test to fatigue from 1 to 10 minute. We were measured bicycle ergometry exercise lime at CP for 30 minutes or fatigue. The main findings were as fellows; On male Primary, middle school students, CP were 7.7∼13.8% more higher than AT However, on female primary school students, AT was 4.4% more higher than CP Exorcise time at CP of male students was 22.12±7.42 minuts, that of female students was 20.08±7.20 minutes. As a results of comparison CP effects factors among exorcise time groups, the higher group of relative AT were more longer exorcise lime. On correlation analysis among exercise lime at CP and effects factors, exorcise time had a positive relationship with relative AT(W/kg), and relative average Intensity(W/kg) for CP measurement. Exorcise time had a negative relationship with CP(W), and lowest intensity(W) for CP measurement. It is concluded that CP was a little overestimate AT, but CP was useful index on aerobic power. Exorcise time at CP had a positive relationship with relative AT(W/kg), and relative average intensity(W/kg) for CP measurement, and had a negative relationship with CP(W), and lowest intensity(W) for CP measurement.

      • KCI등재

        IEEE 1394-lEC61883 기반 멀티미디어 홈 네트워크에서 등시성 연결 관리를 위한 미들웨어

        이동규,오주용,박준호,강순주,Lee Dong Kyu,Oh joo Yong,Park Jun Ho,Kang Soon Ju 한국통신학회 2004 韓國通信學會論文誌 Vol.29 No.12B

        IEEE1394는 멀티미디어 흠 네트워크 환경에서 사용되는 대표적인 네트워크 프로토콜로서 비동기 전송과 등시성 전송을 통한 멀티미디어 서비스를 제공한다. 하지만 다수의 A/V 디바이스가 IEEE1394 네트워크에 참여하여 멀티미디어 데이터 전송을 하게 되면 등시성 자원의 독점과 등시성 연결의 중복이 발생할 수 있다. 본 논문에서는 IEEE1394-IEC61883 기반의 멀티미디어 홈 네트워크 환경에서 등시성 자원과 등시성 연결의 효율적인 관리를 위한 미들웨어를 제안한다. 본 논문에서 제안된 등시성 연결 관리 미들웨어는 다양한 종류의 등시성 연결을 지원하며 등시성 연결의 안정적인 복원을 보장하며 멀티미디어 데이터의 실시간 송수신을 보장하도록 설계 구현되었다. 제안된 미들웨어에서 등시성 연결 관리를 위한 코바 APl를 제공하였으며 성능 평가 및 검증을 하였다. The IEEE1394 is a favorable protocol for A/V networks recently in home and there are two types of transmission in this protocol which are asynchronous and isochronous. The more nodes participate in the IEEE1394 network, the more problems of resource exhaustion and connection repetition may occur. So this paper proposes a middleware for isochronous connection management and reliable multimedia data transmission in the IEEE1394-IEC61883 based home networks. In this paper, proposed middleware is supporting the various types of isochronous connection, guaranteeing the reliability of isochronous connection and providing the characteristic of a real-time data transmission. We support CORBA API for multimedia service and the proposed architecture was implemented using a test-bed and we verified the proposed architecture in a test-bed.

      • 2P-164 : Novel synthetic protocol of InP nanocrystals using cheap phosphites precursors

        이동규,이도창 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0

        Colloidal InP nanocrystals (NCs) are getting a huge interest as likely alternative to CdSe-based NCs, concerning their non-toxicity and tunable emission bandwidth. In the synthesis of InP nanocrystals, the most widely known phosphorus precursor is tris(trimethylsilyl) phosphine ((TMS)3P) which reacts with indium precursors to form In-P monomers. However, (TMS)3P is highly dangerous and expensive chemical which contains huge potential hazards in large-scale synthesis. Here, the InP NCs synthetic method using safer and cheaper precursor is introduced. The method is very similar with the original colloidal method except reacting InCl3-OLA as indium source with triphenyl phosphite to form In-P monomers. With using ZnCl2 as growth kinetics manager, resultant InP NCs shows 1s peak from blue-green to red region. While the noticeable photoluminescence (PL) was not observed, adequate shelling process would recover surface defects to exerts high quality as light emitter.

      • KCI등재

        사용후핵연료 운반용기 덮개 내부 열전달 해석

        이동규,박제호,정인수,김태만,윤정현,Lee, Dong-Gyu,Park, Jae-Ho,Jung, In-Su,Kim, Tae-Man,Yoon, Jeong-Hyun 한국방사성폐기물학회 2011 방사성폐기물학회지 Vol.9 No.3

        사용후핵연료 운반용기 표면온도가 $85^{\circ}C$를 초과할 경우, 대인용 보호막(Personnel Barrier) 또는 운반용 덮개(Transport Hood)를 설치하여 운반 중 운반용기 표면에 사람이 직접 접근할 수 없도록 하여야 한다. 운반용 덮개가 설치된 경우, 열적 안전성 평가의 한 가지 경우인 정상조건 열해석 시, 외부환경 경계조건(환경온도 및 외부복사온도)으로 적용하기 위해서 운반용 덮개 내부 열 환경 조건(내부 공기온도 및 운반용 덮개 표면온도)을 계산해야 한다. 따라서 본 연구에서는 운반용 덮개 내부 공기온도 및 표면온도를 계산하기 위한 해석적 방법 및 열전달 특성에 대한 분석을 수행하였고 CFD 해석 결과와 비교를 통해 타당성을 검증하였다. In case that the maximum temperature of any surface readily accessible during transport of a spent nuclear fuel (SNF) transport cask exceeds $85^{\circ}C$ in the absence of insolation under the ambient temperature of $38^{\circ}C$, personnel barriers or transport hood shall be used to prevent people from casual contact with the transport cask surface. Usually the air temperature within the hood and the hood surface temperature are calculated and further utilized as boundary conditions(free stream temperature and external radiation temperature) for thermal evaluation under normal conditions of transport. In this study, these temperatures are derived using the analytical method based on the heat transfer mechanism around the transport cask under transport hood assuming the thermal equilibrium. By comparing the analytical solutions with the results from the detailed calculations with CFD-computer-code FLUENT 12.1 it is verified that the analytical method is still efficient tool to estimate the temperatures and these temperatures can be further used as boundary conditions for thermal evaluation under normal conditions of transport.

      • KCI등재

        단체급식소에서의 바퀴에 대한 인식도 및 관리실태조사

        이동규,류은순 한국식생활문화학회 1995 韓國食生活文化學會誌 Vol.10 No.1

        A study has been performed on the cockroach knowledge and perception of managers, employees and consumers, and the cockroach control management in food service institutions. A total of 759 subjects including 101 managers, 293 employees and 365 consumers was surveyed in Seoul and Pusan areas from July 1994 to September 1994. The results obtained are as follows: The mean rates of the cockroach knowledge (i.e. 62.26/100.0) and perception (i.e. 23.67/30.0) of the consumers were significantly (p<0.001) lower than those of the managers (i.e. 68.87/100.0 and 25.30/30.0, respectively) and the employees (i.e. 69.09/100.0 and 26.99/30.0, respectively). In the cockroach detection rates, however, much higher rate was seen in the consumer group (i.e. 79.5%) than the manager (i.e. 43.3%) and the employee (i.e. 48.5%) groups. Forty and seventy percents of the subjects have suffered from allergies and nuisance by cockroaches, respectively. The cockroach control was performed by 75.5% of the food service institutions and 70.8% of them contracted with pest control operators to reduce the cockroach populations. The cockroach control methods of the operators were aerosol (40.7%) and insecticidal baits (30.5%). Only 33.7% of the institutions had the budgets for the cockroach control. For public health, the managers and the employees of the institutions need to be educated about cockroaches and hygiene. Also, it is suggested that cockroaches be regularly controlled by professional pest control operators.

      • SCOPUSKCI등재

        난류유동층에서 고속유동층으로의 전이유속에 대한 온도의 영향

        이동규,선도원,배달희,진경태,류호정 한국화학공학회 2001 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.39 No.4

        난류유동층에서 고속유동층으로의 전이유속에 미치는 온도의 영향을 고찰하기 위해 층물질로 모래(평균입경:0.256 ㎜, 입자밀도: 2,617 ㎏/㎥)를 사용한 고온 순환유동층(내경 0.02 m, 높이 2.0 m)에서 emptying time method에 의해 고속유동층으로의 전이유속(U_(tr))을 측정 및 고찰하였다. 측정된 고속유동층으로의 전이유속은 온도가 증가함에 따라 증가하였다. 본 실험의 측정값 및 문헌의 보고들과 기존 상관식을 비교하였으며 기존 상관식들 중 Chehbouni 등 [19]의 상관식이 측정 값들과 가장 유사한 결과를 나타내었다. Transition velocity from turbulent to fast fluidization has been measured by emptying time method in a high temperature circulating fluidized bed(0.02 m i.d. and 2.0 m high) of sand particle(specific surface mean diameter: 0.256 ㎜, particle density: 2,617 ㎏/㎥) with variation of temperature(15-600℃). Measured transition velocity from turbulent to fast fluidization increased with increasing temperature. The previous correlations on transition velocity to fast fluidization compared with the measured values. Among the previous correlations, correlation of Chehbouni et al.[19] shows relatively good results.

      • KCI등재후보

        Differences in the Rapid Knockdown and Lethal Effects of Aerosol Formulations against German Cockroach (Blattaria, Blattellidae) Strains

        이동규 한국곤충학회 2002 Entomological Research Vol.32 No.4

        The knockdown and lethal efficacies of five aerosol formulations including Combat Speed. (AIs: 0.1% imiprothrin and 0.3% cyphenothrin), Raid Power. (AIs: 1.0% pyrethrin and 0.2% permethrin), Home Keeper., (AIs: 0.2% tetramethrin and 0.3% permethrin), Super Killer. (AIs: 0.32% tetramethrin and 0.08% bioresmethrin), and Perma Kill-K. (AIs: 0.3% dichlorvos and 0.1% tetramethrin) against five strains of the German cockroach, Blattella germanica (L.) were assessed. The results show that the mean value of KT50 (5.4 sec.) of Combat Speed. was 4.5 and 3.1 -folds lower than those of Perma Kill-K. and Home Keeper., respectively. The mean value of KT90 (9.0 sec.; slope = 10.02) of Combat Speed. was 3.8 to 5.8-folds lower than Perma Kill-K., Supper Killer. and Home Keeper.. As lethal effects, the mean value of LT50 (17.3 sec.) of Combat Speed. was over 26-folds lower than Supper Killer. and Perma Kill-K.. The mean value of LT90 (32.9 sec.) of Combat Speed. was 37.4 and 15.1-folds lower than those of Supper Killer. and Perma Kill-K., respectively. In general, Combat Speed. and Raid Power. were considered the insecticide aerosols with faster knockdown and higher lethal effects than Supper Killer., Perma Kill-K., and Home Keeper. against five strains of German cockroaches in Korea. Also, the knockdown and lethal effects of Supper Killer., Perma Kill-K., and Home Keeper. were highly variable depends on the strains.

      • KCI등재

        경근(頸筋)의 동통(疼痛) 및 근(筋) 탄력상태(彈力狀態)에 대한 허실(虛實)의 동서의학적 고찰

        이동규,서형주,나창수,Lee Dong-Kyu,Seo Hyung-Joo,Na Chang-Su 경락경혈학회 2000 대한침구의학회지 Vol.8 No.1

        Prognosis in oriental medicine gathers information by four examination methods. It provides important information to understand the degree of deficiency - excessiveness of a patient to treat properly. To generalize the degree of deficiency - excessiveness can be found by seeing the patient's muscle response and pain perception to the palpitations.The theoretical basis to generalize deficiency - excessiveness, oriental and western medical understanding of pain perception and the elasticity of muscle were discussed.The usual symptoms for the excessiveness could include Pain (dislikeness to the palpitation), Stiffness of nape and limbs, Contracture of the limbs, Clonic convulsion and Fast pain. The symptoms for the deficiency could include Pain (likeness to the palpitation, Gastrocnemius muscle spasm, Flaccid paralysis of limbs and Slow pain. More theoretical bases for generalization of deficiency - excessiveness are needed along with the simplifying the complex clinical symptoms. In this way, we can discuss about deficiency - excessiveness with the regard to western medicine to help its generalization.

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