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인지적 접근에 의한 집단 프로그램의 부정적 정서 개선 효과: 고등학생 집단을 중심으로
金琪正,張世根 서원대학교 교육연구소 1999 敎育發展 Vol.18 No.2
This Study was aimed to evaluate the effects of the self-esteem program(Ten Days to Self-esteem) which was developed by Burns(1993) on the base of Ellis's theory of Rational Emotive behavioral Therapy. The program is based on the idea that the negative thoughts and attitudes have a profound impact on negative feelings such as loneliness, depression, guilt, inferiority. and low self-esteem. The posttest design with control group was employed for this study. The self-esteem program composed of ten steps(ten weeks) was practiced under the leading of co-researcher(Chang) to 41 high school students(19 boys and 22 girls) of lst graders. And another 41 high school students(19 boys and 22 girls) of lst graders were participated as control group. The Depression Checklist(15 items). The Anxiety Inventory(33 items). And The Relationship Satisfaction Scale(7 items) were administered to the experimental group before and after the ten week-treatment and to the control group after the ten weeks. Three research problems were established: (1)Does the program have an effect on the treatment of the negative feelings such as depression. Anxiety, interpersonal conflicts? (2)Are there sex differences of the effects of the program on the treatment of the negative feelings? (3)Does the level of intellectual abilities have the impact on the treatment of the negative feelings? Major findings of this study were as follows: (1)The program was found out to have the effects on the program effects and the significant impact of intellectual abilities(such as school achievements and IQ) on the treatment of negative feelings were not found. In conclusion, it could be said that the program developed by Burns(1993) has an significant effects on the treatment of the negative feelings of high school students and may be used as a educational program to help make the lives of high school students healthier and happier.
수평 구조의 MOS-controlled Thyristor에서 채널 길이 및 불순물 농도에 의한 Anode 전류 특성
정태웅,오정근,이기영,주병권,김남수,Jeong, Tae-Woong,Oh, Jung-Keun,Lee, Kie-Young,Ju, Byeong-Kwon,Kim, Nam-Soo 한국전기전자재료학회 2004 전기전자재료학회논문지 Vol.17 No.10
The latch-up current and switching characteristics of MOS-Controlled Thyristor(MCT) are studied with variation of the channel length and impurity concentration. The proposed MCT power device has the lateral structure and P-epitaxial layer in substrate. Two dimensional MEDICI simulator is used to study the latch-up current and forward voltage-drop from the characteristics of I-V and the switching characteristics with variation of impurity concentration. The channel length and impurity concentration of the proposed MCT power device show the strong affect on the anode current and turn-off time. The increase of impurity concentration in P and N channels is found to give the increase of latch-up current and forward voltage-drop.
이상종(Sang-Jong Lee),박정호(Jeong-Ho Park),장재원(Jae-Won Chang),박일경(Il-Kyung Park),김근택(Keun-Taek Kim),성기정(Kie-Jeong Seong) 한국항공우주연구원 2010 항공우주기술 Vol.9 No.2
본 논문에서는 소형항공기의 종축 및 횡방향축 동안정성 비행시험을 수행하고 그 결과를 분석 정리하였다. 대상 항공기는 한국항공우주연구원에서 개발한 4인승 선미익형 항공기인 반디 실용화 1호기이며, 탑재 센서 및 실시간 텔레메트리시스템을 통해 비행시험 데이터를 확보하였다. 대상 항공기의 동안정성 비행시험은 대상 항공기 운동모델의 공력 미계수를 추정하여 고유주파수 및 댐핑 등의 비행성을 판별하여 동안정성을 분석할 목적으로 수행되며, 본 비행시험에서는 chirp, 3211 및 doublet 조종입력을 사용하여 비행데이터를 확보한 후 최대공산 추정기법 (MMLE)을 적용하여 공력 미계수를 추정하였다. This technical paper describes and summarizes the flight test results for the longitudinal and lateal-directional dynamic stability characteristics. The target aircraft is the 4-seat carnard type aircraft, FireFly, which has been developed by KARI. Airborne sensors and real-time telemetry system are constructed to obtain the flight test data. The dynamic stability characteristics should be analyzed and tested by estimaitng the aerodynamic parameters in the dymaic equations of motion. The maximum likelihood estimation technique has been applied to the flight data from chirp, 3211, and doublet control inputs.
스펙트럼 겹침이 있는 DS/SFH-SSMA 시스템의 다중톤 영향 분석
박정민,유호진,김기근,유흥균,Park, Jeong-Min,Ryu, Ho-Jin,Kim, Kie-Keun,Ryu, Heung-Gyoon 한국전자파학회 2001 한국전자파학회논문지 Vol.12 No.3
MAI와 다중톤 간섭채널에 BPSK DS/SFH-SSMA의 스펙트럼 겹침이 있는 통신 시스템의 성능을 연구한다. DS 확산된 신호의 스펙트럼이 겹쳐지는 SSMA 시스템을 고려한다. 겹침의 증가는 ACI와 처리 이득을 동시에 증가시키므로 시스템의 BER 성능을 최적화 시키는 겹침이 있게 된다. 다중톤 간섭이 존재하는 채널에서 스펙트럼 겹침 방식의 비트 에러 확률식을 유도하였다. 수치 분석과 시뮬레이션에 의한 분석 결과, 최적의 겹침을 사용한 시스템의 일반적인 시스템보다 BER 성능이 크게 개선된다. Performance of spectrum-overlapped BPSK DS/SFH-SSMA communication system is considered in MAI and MTI channel. SSMA system is studied that the frequency spectrums of DS spread signals are overlapped. The increase of overlapping makes ACI and processing gain larger simultaneously. Therefore, BER performance can be optimized by controlling the amount of overlapping. BER equation are derived far the overlapping BPSK DS/SFH-SSMA communication system in multitone interference channel. From the numerical analyses and the simulation results, it can be concluded that the BER performance is considerably improved in optimized overlapping system.
Hong, Sung-Eic,Kim, Jin-Koo,Yu, Jeong-Nam,Kim, Keun-Yong,Lee, Chung-Il,Hong, Kwan-Eui,Park, Kie-Young,Yoon, Moon-Geun The Korean Society of Fisheries and Aquatic Scienc 2012 Fisheries and Aquatic Sciences Vol.15 No.1
Genetic variation in the Asian shore crab Hemigrapsus sanguineus was determined from partial mitochondrial DNA (mtDNA) sequences of the cytochrome b (Cytb) gene. Samples included 143 crabs from six localities along three coastlines in South Korea. A nucleotide sequence analysis revealed 38 variable sites in a 470-bp sequence, which defined 37 haplotypes. The haplotypes were not associated geographically and had a shallow genealogy. Pairwise $F_{ST}$ tests and a two-dimensional scaling analysis revealed no significant genetic differentiation among most of the populations. The low pairwise comparison values, but significant genetic differentiation of a northeastern population from all other populations, might have been influenced by a restriction in gene flow caused by hydrographic conditions such as ocean boundaries. The high haplotype diversity, low nucleotide diversity, and time since H. sanguineus expansion in Korean coastal waters indicate rapid population growth and a recent, sudden expansion in the Late Pleistocene.
( Sung Eic Hong ),( Jin Koo Kim ),( Jeong Nam Yu ),( Keun Yong Kim ),( Chung Il Lee ),( Kwan Eui Hong ),( Kie Young Park ),( Moongeun Yoon ) 한국수산과학회(구 한국수산학회) 2012 Fisheries and Aquatic Sciences Vol.15 No.1
Genetic variation in the Asian shore crab Hemigrapsus sanguineus was determined from partial mitochondrial DNA (mtDNA) sequences of the cytochrome b (Cytb) gene. Samples included 143 crabs from six localities along three coastlines in South Korea. A nucleotide sequence analysis revealed 38 variable sites in a 470-bp sequence, which defined 37 haplotypes. The haplotypes were not associated geographically and had a shallow genealogy. Pairwise FST tests and a two-dimensional scaling analysis revealed no significant genetic differentiation among most of the populations. The low pairwise comparison values, but significant genetic differentiation of a northeastern population from all other populations, might have been influenced by a restriction in gene flow caused by hydrographic conditions such as ocean boundaries. The high haplotype diversity, low nucleotide diversity, and time since H. sanguineus expansion in Korean coastal waters indicate rapid population growth and a recent, sudden expansion in the Late Pleistocene.