• Title/Summary/Keyword: CORELATION

Search Result 273, Processing Time 0.03 seconds

A study on insulation characteristics with AC Breakdown Test for Stator Winding of 3.3kV class Induction Motor (절연파괴시험을 통한 3.3kV 유도전동기의 절연특성 연구)

  • Lee, Dong-Geun;Lee, Kwang-Ho;Choi, Kyo-Nam;Kim, Hyun-Il;Kwak, Hee-Jin;Oh, Bong-Keun
    • Proceedings of the KIEE Conference
    • /
    • 2005.07c
    • /
    • pp.2118-2122
    • /
    • 2005
  • This test was performed to assess the corelation of insulation deterioration condition with breakdown voltage of the stator winding of 3.3kV class induction motors which have been in service for 10 years after being installed in 1993. The insulation diagnostic tests include resistance, polarization index(P.I), dissipation factor$({\Delta}tan{\delta})$, maximum partial discharges (Qmax) and AC breakdown test. we evaluated the corelation of insulation diagnostic test with AC breakdown test for stator wilding of high voltage induction motor.

  • PDF

The Analysis About Employment Stress and Career Decision Efficacy of Undergraduates - In Focus of Engineering and Social Science Colleges (대학생의 취업스트레스와 진로결정효능감 분석 - 공학 및 사회계열을 중심으로)

  • Lee, Yong-Kil;Kang, Kyung-Hee
    • Journal of Engineering Education Research
    • /
    • v.14 no.2
    • /
    • pp.60-67
    • /
    • 2011
  • This study is to analyze employment stress and career decision efficacy of undergraduates from engineering and social science department. Research object is 310 undergraduates(engineering department: 164 and social science department: 146) from three colleges in Seoul and Cheju. As a result of testing employment stress and career decision efficacy undergraduates had significant difference according to major and grade. Employment stress of undergraduates from engineering department was more serious than undergraduates from social science department. As a result of analyzing on the basis of grade employment stress of sophomores was more serious than freshmen. Career decision efficacy of undergraduates from social science department was higher than other group. Career decision efficacy of freshmen was higher than sophomore. Employment stress and career decision efficacy showed negative corelation in corelation analysis. This study implies that course educating program should be specialized according to major and grade. This study suggests that we should develop course educating curriculum connecting with major education.

Corelation of Television Drama's Rating and Image Production Techniques - Mainly on the Home Dramas - (TV 드라마의 시청률과 영상제작기법의 상관성 - 홈드라마를 중심으로 -)

  • Park, Dug-Chun
    • The Journal of the Korea Contents Association
    • /
    • v.8 no.9
    • /
    • pp.66-73
    • /
    • 2008
  • Under the changing circumstances of broadcasting, this study aims at the corelation of television drama's rating and television image production techniques, analyzing TV image production techniques and TV rating of drama, the highest rating genre. For this research, 6 dramas were selected as samples except the dramas about history and violence on the basis of the TNS media korea's top 100 of the year 2007. This study analyzed camerawork, shot size, shot duration and scene duration with the contents of replay and manuscript viewing of broadcasting companys' homepages. As the result of the analysis of corelation, TV rating is inverse proportionate to multiple camerawork and shot average duration with a very close relationship, showing no relationship with other variables. The result of this study shows that multiple cameraworks and long durated shots should be avoided for higher TV rating.

An Improved Signature Hashing Algorithm for High Performance Network Intrusion Prevention System (고성능 네트워크 침입방지시스템을 위한 개선된 시그니처 해싱 알고리즘)

  • Ko, Joong-Sik;Kwak, Hu-Keun;Wang, Jeong-Seok;Kwon, Hui-Ung;Chung, Kyu-Sik
    • The KIPS Transactions:PartC
    • /
    • v.16C no.4
    • /
    • pp.449-460
    • /
    • 2009
  • The signature hashing algorithm[9] provides the fast pattern matching speed for network IPS(Intrusion Prevention System) using the hash table. It selects 2 bytes from all signature rules and links to the hash table by the hash value. It has an advantage of performance improvement because it reduces the number of inspecting rules in the pattern matching. However it has a disadvantage of performance drop if the number of rules with the same hash value increases when the number of rules are large and the corelation among rules is strong. In this paper, we propose a method to make all rules distributed evenly to the hash table independent of the number of rules and corelation among rules for overcoming the disadvantage of the signature hashing algorithm. In the proposed method, it checks whether or not there is an already assigned rule linked to the same hash value before a new rule is linked to a hash value in the hash table. If there is no assigned rule, the new rule is linked to the hash value. Otherwise, the proposed method recalculate a hash value to put it in other position. We implemented the proposed method in a PC with a Linux module and performed experiments using Iperf as a network performance measurement tool. The signature hashing method shows performance drop if the number of rules with the same hash value increases when the number of rules are large and the corelation among rules is strong, but the proposed method shows no performance drop independent of the number of rules and corelation among rules.

Research on the Effect of BGA Education Program on Brain Development -for kids- (BGA 교육 프로그램이 뇌 발달에 미치는 효과성 연구 -유아대상-)

  • Hong, Yang-Pyo;Bak, Ki-Ja
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.12 no.8
    • /
    • pp.3497-3502
    • /
    • 2011
  • This study was to examine the effectiveness of BGA education program by observing the pre and post brainwave measurement results of about W, S city kindergarten kids 200 (experimental group 100. comparative group 100) subjects who have shown brain quotient, in between the months of Jul. 2010 and Dec. 2010. As the brainwaves are adjusted by timeseries linear analysis, the result confirmed the differences of both brain quotient. The result of the study suggest BGA education program possibility in positively affecting the subjects' brain development.

Stormwater Runoff Characteristics of Non-point Source Pollutants according to Landuse of Urban Area (도시지역 토지이용에 따른 비점원 오염물질 유출특성)

  • Jeong, Dong-Hwan;Shin, Dongseok;Rhew, Doughee;Jung, Dongil
    • Journal of Environmental Impact Assessment
    • /
    • v.16 no.6
    • /
    • pp.525-532
    • /
    • 2007
  • In order to establish and implement the total maximum daily load (TMDL) management plan in Korea, it is necessary to set the source units and calculate discharge loads for non-point source pollutants such as BOD, COD, SS, TN and TP. This study analysed the corelation between stormwater runoff characteristics and event mean concentrations (EMCs) of non-point source pollutants. As the result of the corelation analysis, we knew that all the antecedent dry days (ADD) and the rainfall correlated lowly with non-point source pollutants in the urban areas such as resident area, industrial area, business area, road area and parking area. Therefore, it is necessary to get all samples from stormwater starting point to stormwater ending point and standardize the sampling method of stormwater in order to obtain more accurate EMCs for landuse.

The relationship of serum chrominum with blood glucose and lipids in rural college women

  • Kim, Ae-Jung;Kim, Hea-Kyung;Chang, Ock-Ja;Kim, Soon-Kyung
    • Proceedings of the Korean Nutrition Society Conference
    • /
    • 1998.05a
    • /
    • pp.49-49
    • /
    • 1998
  • Chrominum(cr) plays an important role in carbohydrate and lipid metabolism and Cr deficiency impairs glucose tolerance and increase serum cholestrol and triglyceride. The relationships of serum Cr with serum glucose and lipids was examined in 79 female college students in Choong-Nam ares. Subjects were devided into underweight. normal and overweight groups according to their BM11. The average age, weight, height and BMI were 21.9yr, 55.89kg, 158.54cm and $22.62kg/m^2$, respectively. Height were not di fferent between groups. Serum Cr and glucose concentrations were not signi ficantly different between groups. However, there were tendency of increasing serum Cr level with increasing body weight. Serum cholesterol and LDL-cholesterol concentrations were significantly lower in underweight group than other groups. BM! had positive corelations wi th LDL-cholesterol, Al and LPH, and negative corelations with HDL-cholesterolltotal cholesterol ratio. Serum Cr concentration had positive corelation with serum glucose concentration and negative corelation with LDL-chloestrol and LPH.nd LPH.

  • PDF