컨테이너 검색기 이송대차 추진용 선형 유도전동기의 2차측 리액션플레이트 재질에 따른 특성 연구

정재훈(Jae-Hoon Jeong),최장영(Jang-Young Choi),성소영(So-Young Sung),박종원(Jong-Won Park),임재원(Jaewon Lim) 대한전기학회 2016 전기학회논문지 Vol.65 No.1

This paper presents the analysis of the analysis of thrust characteristics of linear induction motors(LIMs) according to secondary reaction plate. LIMs are well known as high speed transport systems, which can obtain thrust directly without gears and links, or auxiliary mechanisms. A simple structure, easy maintenance, and less environmental pollution are advantages of LIMs. In transport systems using LIMs, the secondary reaction plate is an important design factor, because it has considerable impact on the cost of the railway as well as the performance of the LIMs. This paper deals analyzed the characteristics of linear induction motor used for moving the vehicle of container scanner. Thrust, efficiency and load characteristic were interpreted with FEM regarding two models whose material of secondary reaction plate was copper and aluminum. It suggested the interpretation of thrust, efficiency and power factor characteristic along slip and compared the operation ability of linear induction motor through characteristics analysis along the load.

부산시 중심지체계 설정에 관한 연구

임채성,이광국,윤상복,윤시운 東亞大學校 建設技術硏究所 2000 硏究論文集 Vol.24 No.2

This study was aimed to establish the system of centers and to offer the viewpoint to studies and policies of urban spatial structure while analyzing their characteristics in Busan. The results of this study were summarized as followed : According to the result about the establishment of the system of centers, 2 Centers, 4 Sub-Centers and 5 low-lanking centers were identified. This is a little different with 2 Centers, 6 Sub-Centers, 2 District-Centers written in 「Busan Master Plan toward 2011's」. In other words, the system of centers in Busan was represented more subdivided and abundant than that of 「Busan Master Plan toward 2011's」 and these centers had both polycentric and multi-nuclei characteristics. With premise that the urban structure is being changed on the basis of the change of a period, society and an economy in the future to establish effective system of centers, it is advisable that the establishment of the system of centers is to readjust by stage in the process of planning.

질산칼슘 주입에 의한 저수지 퇴적물의 인용출 제어효과

임봉수,박희동,유성환 대한상하수도학회 2003 상하수도학회지 Vol.17 No.1

This study was conducted to investigate the control effect of phosphorus release from the sediments in lake by calcium nitrate injection. The maximum release rate of T-P after 5 days was 53.5㎎ T-P/㎡ · d for release experiment, while reduced to 28.9㎎ T-P/㎡ · d when 8.3L/㎡ as 5% calcium nitrate was injected, decreased to about 46%. The maximum release rate of PO_4-P after 2 days was 9.0㎎ PO_4-P/㎡ · d and little release at the beginning of the experiment. The PO_4-P release control by injection of calcium nitrate was very effective. Control effects of organics oxidation and phosphorus release in sediment was good since COD was reduced, PO_4-P content was fixed, and NAI-P was almost fixed compare to raw sediment after release.

하지수술시 Fentanyl과 병용한 0.75% 등비중 Ropivacaine을 이용한 척추마취

임일환,이상곤,반종석,민병우 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.43 No.5

Background: Opioids and local anesthetics administered together intrathecally have a potent synergistic analgesic effect and less hypotention using a minidose of local anesthetic. This study was designed to investigate the safety and efficacy of two doses of intrathecal isobaric ropivacaine/fentanyl in patients undergoing an operation of the lower extremities. Methods: Thirty patients undergoing an elective orthopedic surgical operation of the lower extremities were randomly assigned to two groups for spinal anesthesia. Patients in group Ⅰ (n = 15) received 0.75% ropivacaine 14 mg/fentanyl 20㎍, and patients in group Ⅱ (n = 15) received 0.75% ropivacaine 16 mg/fentanyl 20㎍. After spinal anesthesia, we measured the time to T10, peak dermatomal level, time to peak sensory level, time to maximum motor blockade, duration of complete motor block and duration of complete sensory block using the pin prick test and Bromage motor scale. Also circulatory variables were monitored every 5 min and side effects were measured for 3 day after spinal anesthesia. Results: There were no significant differences between the groups in time to T10, peak dermatomal level, time to peak sensory level, time to maximum motor blockade and duration of complete motor block, but duration of complete sensory block was significantly longer in the 0.75% ropivacaine 16 mg/fentanyl 20㎍ group than the 0.75% ropivacaine 14 mg/fentanyl 20㎍ group. Conclusions: Intrathecal 0.75% ropivacaine 14 mg/fentanyl and 0.75% ropivacaine 16 mg/fentanyl were equally suitable for a lower extremity operation. (Korean J Anerthesiol 2002; 43: 600~605)

SAPO-11의 1-Hexene 異性化反應에 있어서 溫度에 따른 選擇度 特性과 高溫에서의 Cracking 反應經路의 解析

林相潤,丁碩鎭 慶熙大學校 1990 論文集 Vol.19 No.-

幼兒基 社會化 過程과 TV에 關한 硏究

林聖惠,金英淑 진주여자전문대학 1990 論文集 Vol.12 No.-

The purpose of this research is to examine the influence of TV on chilren's socialization. The specific problems of this research are as follows : First, how much is T.V. related to children's socialization and what influence does the former have on the latter? Second, what is the limitation or problem connoted in the above question? This reseach has been made by referring to various documentary records, Following the introduction which lays the ground work of the reseach, chapter Ⅱ develops an appropriate concept of socialization. While introducing its theoretical background. Chapter Ⅲ examines the influence of TV on children's socializations ; chiefly on prosocial, antisocial(aggression and violence), activities, information, stereotyping, control or habits gained from TV viewing, and character. In summary and conclusion the in fluences of TV on children's socialization are analyzed. According to this review there were four limitations or problems : 1. Influence of TV on children's socialization can not be examined detached from children's environment, influence of parents, value of attitude of reference group etc. 2. It is difficult to gain 'control group'. 3. It is difficult to know 'long effect' 4. It is difficult to clarify the cause of children's socialization. Anyway, the precise influences of TV on childrens socialization can not be measured accurately. TV, however may act as a strong agent having influence on children's socialization. Therefore, it is very important to overcome the four limitations of problems previously stated.

FEM과 Thickness Analysis를 이용한 판금성형해석

林尙憲 영남이공대학 1997 論文集 Vol.26 No.-

Sheet metal forming processes experience very complicated deformations effected by processes parameters such as the blank shape, blank holding force, die geometry, sheet thickness, friction, and so on. Although these process parameters influence the deformation mechanism and the quality of deformed parts, the optimum values of process parameters are determined by intuition and experience through trial and error. A more systematic method such as finite element analysis can simulate complicated sheet metal forming processes and provide useful information. However, general finite element analysis is generally carried out with given process parameters and thus requires numerical trial and error with enormous time and cost to determine the optimum values of process parameters. For this reason, some approaches to find directly the process parameters have been developed In this method the input of mathematical model includes part geometry, forming node, material properties, forming speed, and coefficients of friction. The output includes strain distributions and forming severity derived from the Forming Limit Diagram. The mathematical model identifies critical forming zones during the initial part design stage and allows what-if scenarios to be investigated before the final design is committed to soft or hard tooling. The designer can evaluate various design versus production options for reducing the severity of the stamping. By the measuring of the thickness variation of deformed part on ultrasonic measuring machine and through the monitoring of forming process variables such as material variation and tool wear, the thickness analysis has product.

아기에게 친근한 병원의 운영실태와 장려방안

임부돌,박정한,이상원 한국모자보건학회 2003 한국모자보건학회지 Vol.7 No.2

Metal Oxide Sensor를 이용한 알코올 분석

林香住,姜東求,韓道洙,趙成棟 조선대학교 생산기술연구소 1996 生産技術硏究 Vol.18 No.2

A resistance value of the metal oxide sensor for alcohols was measured by metal oxide senor (FOX2000). T30/1 sensor showed the best response to propanols. The pattern analysis could be measured to ppm and resistance could be processed as various forms. We could find that six sensor responses for propanols were better than those of methanol, when alcohols were displayed at the same time on the radar axis plane with maximum value of △R/Ro by sensors. Alcohols and distilled water were analysed with a principle component and they could be confirmed as being separated clearly.

色彩環境의 理論的 背景에 관한 硏究

林晩澤,朴星夏 朝鮮大學校 建設技術硏究所 1998 建設技術硏究 Vol.18 No.1

The design ranges of human-environmental system can be divided into seven kinds-water, thermal, air, light, color, psychology and sound environment. This study aims at clarifying the theoretical background of color environment from the historical point of view. Color study has begun to develope ancient times. Color environment needs to the study of color theory, color system, harmony of colors, color conditioning, color psycology, color culture and coloring of a architecture.