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무기체계의 EMP 방호성능 검증을 위한 시험평가 방안연구
진정희,장동원,장봉기 국방기술품질원 2022 국방품질연구논집 Vol.4 No.1
이 연구에서는 관련 EMP 표준과 무기 시스템의 하위 시스템 및 장비, 핵심 부품 및 재료와 같은 관련 문헌을 조사했으며, 각 무기 시스템의 각 플랫폼에 대한 HEMP 적용 표준과 항목을 검토 및 분석하였다.
RF 리모컨용 마이크로스트립 급전 개방 종단을 갖는 미앤더 슬롯 안테나
진정희,김의중,장수영,이영순,조영기,Jin, Jeong-Hi,Kim, Ui-Jung,Jang, Soo-Young,Lee, Young-Soon,Cho, Young-Ki 한국전자파학회 2007 한국전자파학회논문지 Vol.18 No.2
본 논문에서는 400 MHz ISM 대역에서 사용 가능한 마이크로스트립 선로로 급전되는 개방 종단을 갖는 미앤더 슬롯 안테나를 새롭게 제안하였다. 본 논문에서 제안된 슬롯 안테나와 기존의 슬롯 안테나의 주된 차이점은 좁은 범위로 제약된 공간에서 기존의 슬롯 안테나를 소형화하기 위하여 개방 종단을 도입했다는 점이다. 본 논문이 제안하는 안테나의 타당성을 검토하기 위하여 공진 주파수 및 방사 패턴의 결과를 시뮬레이션해 보았고, 그 결과들을 실험적으로 측정해 보았다. 본 논문이 제안하는 안테나의 공진 주파수 및 방사 패턴의 시뮬레이션 결과와 측정 결과가 잘 일치함을 알 수 있었다. A meander slot antenna with open-end fed by a microstrip line which can be used at 400 MHz ISM band is newly proposed. The main difference between the proposed slot antenna and the previous slot antenna is the introduction of the open-end to miniaturize the previous meander slot antenna in the space restricted within narrow limit. In order to check the validity of the proposed antenna, the resonant frequency and radiation pattern of the proposed antenna have been simulated and examined. Good agreements between simulated results and measured results have been observed.
진정희,이강자,이윤희 동아시아식생활학회 2002 동아시아식생활학회지 Vol.12 No.1
This study investigated the effects of a 7 week nutritional educational program on the unbalanced dietary habits, tastes, dietary attitudes, and nutritional knowledge of 127 fourth grade students. The subjects were selected from seven elementary schools that were under the supervision of the Dongbu Office of Education in Incheon. Results showed that most of the subjects were fully aware of the fact that they were on an unbalanced diet. It was also revealed that the main reason for their unbalanced diet was that they tended not to eat foods that did not fit their tastes. After implementation of the 7 week nutritional education, the subjects' unbalanced dietary habits significantly decreased, but their desires to fix their unbalanced diet failed to increase. The subjects' tastes showed a positive change in their perception towards vegetables, seafood, and seaweed to a significant degree; however, their appetite for meat, eggs, beans, frozen foods, and processed goods did not show any noticeable change. A significant increase was also found on the level of the subjects' nutritional knowledge but not in their dietary habits and dietary attitudes.
진정희,황도순 公州大學校 特殊敎育硏究所 1999 특수교육논집 Vol.4 No.1
The purpose of this study was to investigate peer relationship of the mainstreamed handicapped children in regular classrooms. To achieve this purpose, the following study topics were selected. First, In sociometric status, are there any differences between normal children and the mainstreamed hamdicapped children in regular classrooms? Second, How are the effect of background factors(sex, grade, handicape type) on peer relationship of the handicapped children in regular classrooms? Third, How are the effect of spcial class factors(entrance term, class formation type) on prier relationship of the handicapped children in regular classrooms? Fourth, In sociall skill scores, are there any differences between the positive sociometric status group and negative sociometric status group? The subjects for the study were 814 children from 2th grade to 6th grade consistings of 768 normal children and 76 mainstreamed handicapped children in regular classrooms. For statistical analysis of the data, X2 s statistics and T-test was operated. The major finding of the study were; First, The handicapped children recieivde more negative nomination and fewer positive nomination than normal children. Second, Significan difference were found between the learning disorder children and mental retarded children. Learning disorder children received more positive nomination and fewer negative nomination than mental retarded children. Third, Significan difference were found between the under 2 years children and over 2 years children in entrance term. Under 2 years children received more positive nomination and fewer negative nomination than over 2 years children. Fourth, In the social skill scores, no significan difference were found between the positive sociometric status group and negative sociometric status group. But in the cooperative skill scores, significan difference were found between the positive sociometric status group and negative sociometric status group. The positive sociometric status group received more cooperative skill scores than negative sociometric status group.
Time-resolved FTIR Spectroscopy를 이용한 Syndiotactic Polypropylene의 변형현상 연구
진정희,옥재훈,송기국 慶熙大學校 材料科學技術硏究所 1997 材料科學技術硏究論集 Vol.10 No.-
고분자의 변형현상을 분자차원에서 이해하기 위하여 time-resolved FTIR spectroscopy를 이용하여 s-PP 필름의 연신에 따른 IR 스펙트럼의 변화를 조사함으로써 stress-strain diagram에서 얻어진 고분자의 거시적인 변형형상을 고분자 구조와 배향의 변화와 상관지어 설명할 수 있었다. s-PP 필름을 연신할 때 necking이 일어나게 되면 일차적으로 사슬의 conformation이 helix에서 planar zigzag 구조로 변하기 시작한 후, 계속해서 사슬의 conformation 변화와 배향의 변화가 같이 나타났다. 연신에 따른 사슬의 배향은 necking region에서는 결정이나 무정형 영역에 존재하는 모든 s-PP 사슬들이 연신 방향으로 배향이 되는 반면 strain hardening region에서는 결정영역에 존재하는 고분자 사슬들만 배향이 일어나는 것을 알 수 있었다. In order to understand polymer deformation phenomena at the molecular level, the time-resolved FTIR spectroscopy was employed. By investigating the changes in IR spectra with drawing the s-PP film, the macroscopic deformation properties reflected by stress-strain diagrams were correlated with polymer structure and orientations. Once the neck was formed by stretching the s-PP film, at first the chain conformation transformed from helix to planar zigzag structure, and then changes in the chain orientation were observed. In the necking region, the polymer chains of the amorphous as well as the crystalline domains were oriented, whereas only the chains in the crystalline domain were oriented in the strain hardening region.