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      • KCI등재

        여학생의 인구 및 가족계획교육 효과분석

        박영수,황인담 한국보건통계학회 1982 한국보건정보통계학회지 Vol.7 No.1

        A study was performed on knowledge and attitude of women students of University on population and family planning. The study group consisted of 229 students of Jeonbug National University who took a course of Population Education, and the control group was the students of Woo Suk College who did not take the course. The major findings and results are summarized as follows: Ⅰ. The knowledge and responses measured on population and family planning, between the study group and control group were not different significantly. Ⅱ. The family planning was pointed as the best means of solution over population problems. Ⅲ. On the ideal age of marriage, the mean was 24.96 ± 1.19 years in study group, and 24.65±1.36 years in control group. Ⅳ. The mean age desired for marriage was 26.42 ± 1.61 years in study group, and 26,30±1.69 in control group, The diference between two groups was not significant. Ⅴ. The ideal age of the first child birth was 26.70 ± 3.89 years in study group and 26.34±3.66 years in control group. Ⅵ. The mean number of children desired was 1.54 ± 0.94 years in study group and 1.78 ± 0.92 years in control group. The difference between two groups was slightly significant. Ⅶ. The attitude of control group on sterility was more conservative than study group. The control group showed more interest in adoptation of children than the study group. Ⅷ. To compare with the general population on preference of boy, both of the study group and control group showed less interest in the preference of boy. However, 3.5 per cent of the study group studdkents had of study group. The difference between two groups were significant statistically. Opinions to keep trying till a boy is born. The more students of control group prefer boy to girls than those of study group. The difference be tween two groups were significant statistically. Ⅸ. More students of control group consider children means of keeping family generation than those of the study group. Ⅹ. Out of the total, 80 per cent of the study group had knowledge or pregnancy, and physiology of birth. mean while 66 per cent of the control group had knowledge on those areas. A. The mean number of family planning methods pointed out by study group studdkents was 4.5± 2.1, and material of family planning(22.7%), and TV and radio(19.7%). Menawhile, the sources given by the Control group. B. The sources of information of family planning answered by the study group were school (40.2%), education material of family planning (22.7%), and TV and radio (19.7%) Meanwhile, the sources given by the control group were educational material (28.2%), TV and radio (25.9%) and school (24.5%). C. On the responses of the study group students on time allocation on population education, 66.8% of them had the opinions that the time allocated was adequate, 26.6% having opinions that the time was not adequate, and 6.6% having opinions that the time was more than enough. D. The evaluations made by the study group students on the level of population education were as follows 65.9% of the students consider the level to be adequate, 30.2% considering the level to be low, and 3.9% considering the level to be difficult. E. Out of the total, 55.0% of the study group students were satisfied with the contents of porplation education program and 22.7% were very satisfid the contents and 19.2% were not satisfied with the contents of the program.

      • SCOPUSKCI등재

        Mg(OH)2 를 이용한 습식배연탈황공정에서 흡수탑의 특성

        박영수,이형근,조항대,최병문,윤혜식 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.5

        수산화마그네슘을 이용하여 산업체의 보일러에서 발생하는 연소가스를 처리하는 배연탈황공정을 개발하기 위하여 bench 규모의 실험장치를 이용하여 여러 형태의 흡수탑의 특성과 성능에 관한 실험을 수행하였다. 흡수탑의 종류에 따라 기상물 질전달계수(k_Ga) 값을 기상 Reynolds number 21,000-33,000과 액상 Reynolds number 950-2,400 범위에서 경험적 상관관계식을 얻었다. Dual Flow Tray(DFT)를 설치한 흡수탑에서 SO₃ 농도가 0.2-0.3wt% 정도로 낮은 경우에는 L/G ratio의 변화에 따라 SO₂제거효율이 크게 변화함을 보여 주지만, SO₃ 농도가 0.7wt% 이상인 조건에서는 L/G ratio나 SO₃ 농도가 증가하여도 별 영향을 받지 않았다. DFT의 hole 상부에 일정한 각도의 plate가 붙어 있는 Cycloid Dual Flow Tray (CDFT)는 DFT에 비해 성능이 다소 높지만 각도에 따라 흡수탑내의 압력차의 변화가 컸다. CDFT#3, CDFT#4를 이용한 경우에 비교적 낮은 압력을 유지하면서도 SO₂ 제거효율이 95% 정도를 유지할 수 있었다. To develope the flue gas desulfurization process using magnesium hydroxide, which is used in industries to treat the flue gas from boilers, the performance of different types of gas-liquid contactors was experimentally investigated using a bench scale system. Emperical correlations for the gas phase mass transfer coefficient(k_Ga) was determined at gas-phase Reynolds numbers from 21,000 to 33,000 and liquid-phase Reynolds numbers from 950 to 2,400. SO₂removal efficiency obtained at the Dual Flow Tray(DPT) was varied by L/G ratio when S03 concentration was 0.2-0.3 wt%, but was not affected by L/G ratio and SO₃ concentration when SO₃ concentration was more than 0.7 wt%. Not only was the performance of Cycloid Dual Flow Tray(CDFT) which has an inclined plate above each plate hole higher than DPT but the pressure drop was larger. 95% SO₂ removal efficiency was obtained using CDFT#3, CDFT#4 with a mild pressure drop.

      • KCI등재

        조언 형태가 주관적 예측 조정에 미치는 영향 분석

        박영수,이다빈,김효영 한국경영과학회 2022 한국경영과학회지 Vol.47 No.3

        We examined how individuals behave in making judgmental forecasts when they are given advice in different communication formats: (a) face-to-face, and (b) computer-mediated. Participants were asked to make an initial forecast before receiving advice, and were told to make a final forecast after receiving advice. Participants were told the advice is made by a human expert, but one group received the advice face-to-face and the other received the advice through computer. We found that individuals in computer-mediated treatment discount advice more than individuals in face-to-face treatment. We also found that this advice discounting is serially mediated by the perceived difficulty level of the task and confidence level. Individuals in face-to-face treatment feel the task to be more difficult and feel less confident than individuals in computer-mediated treatment and therefore, take advice more. However, individuals in computer-mediated treatment are better at discerning the quality of advice than individuals in face-to-face advice. We conclude that computer-mediated advice is better than face-to-face advice in reality except when advice quality is known to be consistently reliable.

      • KCI등재

        J2ME상에서 kXML Parser를 이용한 MIDlet 응용 설계 및 구현

        박영수,장덕철,Park, Young-Soo,Jang, Duk-Chul 한국정보처리학회 2004 정보처리학회논문지D Vol.11 No.1

        Compared with the desktop, the MIDP on J2ME has many limitations on memory capacity, screen size, networking ability and processing speed. In addition, screens vary with device providers in size, and service platforms vary with mobile service providers. These factors require additional functions to server and cause overheads of the server. On this paper, we propose the wav to reduce overheads of the server and to overcome disadvantages of the J2ME clients, with the server that provides the service of data in XML document type and the client on MIDP that is developed including the kXML parser. J2ME 기반의 MIDP는 기존 데스크탑 클라이언트에 비해 메모리, 스크린, 그리고 네트워크나 처리속도측면에서 많은 제한점을 가지고 있다. 특히 휴대폰의 경우 각 기기별 스크린 크기가 다르고, 통신사별 서비스 방식이 다르므로, 서버측면에서 보면 이를 위한 세심한 처리과정이 있어야 한다. 이것은 서버의 부하를 유발하는 원인이 될 수밖에 없다. 따라서 본 논문에서는 서버 측에선 XML 문서 형태로 서비스를 하고, J2ME 기반의 클라이언트에선 kXML 파서를 이용한 MIDlet 프로그램을 수행하게 함으로서, 서버의 부하를 줄임과 동시에 J2ME 클라이언트의 단점을 극복하는 방안을 제시하고자 한다.

      • 무선센서를 활용한 교량의 동특성 추정

        박영수,김세훈,이종재,이창근,이원태 한국구조물진단유지관리학회 2012 한국구조물진단학회 학술발표회논문집 Vol.2012 No.1

        In this paper, a research was performed to estimate dynamic characteristics of bridges using wireless sensors. First, the developed wireless sensors were compared with wired sensors through laboratory tests. Field tests were carried out on a steel box girder bridge. Dynamic characteristics of the test bridge were identified from the measured data by wireless sensors. As a result, it was proven that the wireless sensor system could be effectively applied to the measurement of large civil-infra structures.

      • KCI등재

        EFB(Empty Fruit Bunch) 반탄화 시 생성된 Char의 수율 및 특성에 대한 운전변수의 영향

        박영수,김양진,김나랑,구재회,채재우,남상익,최지호 한국폐기물자원순환학회 2012 한국폐기물자원순환학회지 Vol.29 No.8

        Korea has adopted a federal renewable electricity standard that begins at 2% in 2012 and requires companies to source 10% of their electricity from renewables by 2022. Therefore the interest in the use of biomass as a renewable energy resource is growing. By importing biomass, the Korea, which produces too little biomass of its own, can meet the needs of the renewable energy sectors. In the case of import biomass, it will cost a great deal on the transportation and logistics of biomass materials. Therefore new research and development on the biomass fuel with high energy density is needed to reduce logistics cost on transportation of the biomass fuel. Torrefaction is a thermochemical treatment process of biomass at temperatures ranging between 200 and 300oC. Typically, 70% of the mass is retained as a char product, containing 90% of the initial energy content. Torrefaction experiments on samples of EFB were performed in a fixed bed reactor to determine the effect of operation variables such as reaction temperature (205-310oC), reaction time (20-40 min) and air ratio (0-0.18) on char yield and characteristics. Increase of the torrefaction temperature led to a decrease of the yield of the char. The heating value of char increased with the increase of the reaction temperature, because the carbon content increased and hydrogen and oxygen content decreased. The yield of char decreased with increasing air ratio. This suggested that oxidation of EFB occurred during torrefaction in the presence of oxygen.

      • 잎담배의 열분석 I. 열중량분석과 시차열분석

        박영수,양광규,Park, Yeong-Su,Yang, Gwang-Gyu 한국연초학회 1981 한국연초학회지 Vol.3 No.2

        Some or the parameters affecting the thermal analysis of different types of ground tobacco have been discussed. The sample, Korean flue- cured and burley and Greek orient tobacco leaves were run in air at heating rate of $10^{\circ}$ and 20^{\circ}C$ per minute. The thermograms obtained were divided into four temperature zones. The effect of different heating rates on thermal degradation has been discussed At the lower heating rate the maxima of DTA curves in zone 3 and 4 were 25-$40^{\circ}C$ lower than that of the higher heating rate.

      • 고속 듀얼 모서리 천이 D형 플립-플롭의 설계

        박영수 대한전자공학회 1998 電子工學會論文誌, C Vol.c35 No.1

        In this paper a double edge triggered (DET) filp-flop is proposed which changes its output state at both the positive and the negative edge transitions of the triggering input. DET filp-flop has advantages in terms of speed and power dissipation over single edge triggered (SET) filp-flop has proposed DET flip-flop needs only 12 MOS transistors and can operate at clock speed of 500 MHz. Also, the power dissipation has decreased about 33% in comparison to SET flip-flop.

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