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홍혜정(Hye Jung Hong),송명호(Myung Ho Song) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.5
Gas hydrates (more precisely clathrate hydrates) are ice-like solid compounds formed from guest gas molecules and host water molecules under sufficiently high pressure condition at a given temperature. The knowledge of hydrate powder decomposition characteristics during decompression is required to design the hydrate pellet production process of GTS (gas to solid) technology, which is considered as an economic alternative for LNG and CNG technology to transport natural gas produced from small and stranded gas wells owing to the mild temperature condition or better compressibility. The sample hydrate powder was prepared within 10L volume cylindrical reactor whose inner wall temperature was maintained at 0℃. Initially, the reactor was filled with 1 ㎏ ice powder having effective particle size between 1 ~ 2 ㎜, and was pressurized up to 6 ㎫. As the formation of hydrate from ice particles continued the reactor pressure decreased until the completion of conversion. The influence of mixing and crushing by stainless steel balls driven by flat blade impeller on hydrate formation was observed. Thus prepared hydrate powder was chilled to the predetermined temperature within the range between -25℃~0℃, and abruptly decompressed to ambient pressure. Then the transient change in the hydrate mass fraction was measured to investigate the role of self-preservation during the hydrate powder decompression.
유아교육기관의 조직건강 및 의사결정 참여와 교사효능감과의 관계
홍혜정 ( Hye Jung Hong ),안선희 ( Sun Hee Ahn ) 미래유아교육학회 2004 미래유아교육학회지 Vol.11 No.4
The purpose of this study was to investigate the relationships among the organizational health, the participation in decision-making, and sense of efficacy in preschool. The subjects were 196 preschool teachers in Seoul city. The data were collected through self-administered questionnaire. The results showed that there were significant differences in the teachers` sense of efficacy according to the educational level, the year of job experience, and the frequency of in-service education. There were also differences in preschool organizational health and teacher`s participation in decision-making in terms of teacher`s demographic variables. The preschool organizational health was significantly correlated with the teachers` sense of efficacy. In addition, the degree of teacher participation in decision-making was positively linked to teachers` sense of efficacy.
NEAT를 대비한 중학교 말하기 쓰기 평가에 대한 교사와 학생의 인식 연구
홍혜정 ( Hye Jung Hong ) 한국사회복지경영학회 2016 사회복지경영연구 Vol.3 No.1
본 연구에서는 현장에 있는 교사로서 수능에서 영어 시험을 대체할 시험으로 논의 중인 국가영어능력평가(National English Ability Test)에 대해서 중학교 영어과 교사들 및 중학생들이 얼마나 알고 대처하고 있는지 알아보고자 하였다. 특히 NEAT가 지닌 주요 특징 중 하나인 말하기와 쓰기 평가와 관련해 중학교 현장에서는 평가 실태는 어떠한지 알아보고자 하였다. 이를 위해 중학교 영어과 교사들 및 중학생들을 대상으로 설문 조사를 실시한 뒤, 그 결과를 분석하였다. 그 결과의 첫 번째로, 교사들은 NEAT에 대해 상당히 많이 알고 있는 반면에 학생들에게는 인식이 덜 되어있는 상태였다. 둘째, 말하기 쓰기 지도 및 평가에 할애할 시간이 매우 부족한 것이 현실이라고 교사들은 반응하였다. 학생들도 이러한 교사들의 지도로 인해 말하기 쓰기 지도 및 평가를 받아 본 적이 거의 없다는 답변이 나오고 있는 실정이다. The purpose of this study was to determine whether as a teacher in the field how to cope middle school and junior high school English Department teachers have to know about the national English proficiency test in English under discussion to replace tests (National English Ability Test) on the SAT. Particularly with respect to speaking and writing assessment, one of the main features NEAT with the situation in the Middle-site assessment was to evaluate eotteohanji. After performing a survey of junior high school and junior high school ENGLISH teacher for them, and analyzed the results. As a result of the first, teachers were recognized while they are less students, on the other hand who knows quite a lot about NEAT. Second, as saying. Write guidance and that the time you spend on the real teachers were rated very poor response. Students are also due to the situation in the guidance of these teachers say. Have you ever received a letter and map out the assessment is almost no response.
흰쥐의 후지 석고 고정, 탈신경 및 부유에 의한 근위축의 비교
윤범철,이명화,김난수,홍혜정,유병규,Yoon, Bum-Chul,Lee, Myoung-Hwa,Kim, Nan-Soo,Hong, Hye-Jung,Yu, Byong-Kyu 대한물리치료학회 2001 대한물리치료학회지 Vol.13 No.3
The aim of this study was to compare features of muscle atrophy induced by cast fixation. denervation and suspension of rat hindimb. Muscle mass and glycogen of the soleus and plantaris muscles were studied after 3, 7, or 14 days of cast fixation, denervation and suspension. The results as follows: 1. Body weight of rats decreased significantly after 3 days and showed gradually increase after 7 and 14 days of hindlimb cast fixation, denervation and suspension. Particularly hindlimb suspended rats showed a rapid decrease after 3 days in body weight. 2. Relative weight of soleus and plantaris musclcs decreased significantly by hindlimb cast fixation, denervation and suspension, particularly after 7 days. The decrease rate was the lowest in suspended rats. 3. Glycogen content of soleus muscle decreased significantly after 14 days of hindlimb cast fixation, denervation and suspension. Also glycogen content of plantaris muscle decreased significantly after 14 days of hindlimb cast fixation and denervation, but not significantly after hindlimb suspension. These results indicate that suspension of hindlimb muscles causes less atropy than cast fixation or denervation, likely due to maintainment a few activities during hindlimb suspension. We concluded that the decrease in mechanical strains imposed on the muscle during inactivity was the main factor for the development of atrophy. These basic data suggest that some experimental conditions such as electrostimulation or stretching, participate in countermeasure programmes.
마사지 및 극초단파 치료가 원심성 운동으로 유발된 지연성 근육통과 근 손상 지표에 미치는 영향
윤범철,함용운,이명화,홍혜정,이재학,Yoon, Bum-Chul,Ham, Young-Woon,Lee, Myung-Hwa,Hong, Hye-Jung,Lee, Jae-Hak 대한물리치료학회 2001 대한물리치료학회지 Vol.13 No.2
The purpose of this study was to determine if there were any beneficial effects of massage or microwave diathermy regarding delayed onset muscle soreness (DOMS) and indices of muscle damage. Twenty-one adult women, randomly divided in two treatment groups and a control group, performed eccentric stepping exercise with the quadriceps until exhaustion. The treatment groups additionally performed massage or microwave diathermy after the stepping exercise. Pressure pain threshold measure for DOMS and muscle enzymes in the blood were obtained before, and 0, 24, 48 and 72 hours after exercise. The results were as follows; 1. Eccentric exercise caused DOMS and elevations of muscle enzymes in the blood, with peak values exercise levels by 24 hours after exercise and GOT and CRP by 72 hours after exercise. DOMS and CK activity remained elevated 72 hours after exercise. 2. DOMS and blood muscle enzymes response to eccentric exercise were reduces by massage or micro diathermy therapy. DOMS was significantly decreased at 72 hours after exercise by massage and microwave diathermy. CK activity was significantly decreased at 72 hours after exercise by microwave diathermy. There was the significant reduction in LDH at 48 hours, GOT at 24, 48, 72 hours. and CRP at 24, 48 hours after exercise by massage and microwave diathermy. These results indicate that massage or microwave diathermy is had effect on recovery from exercise-induced muscle damage. In our's suggestion. microwave diathermy is particularly more appropriate therapeutic modality because it is more simple and economic than massage.
서울시 중구 다문화가정 외국 출신 성인의 건강수준, 건강행위, 의료서비스 이용 실태
안지영 ( Ji Young An ),홍혜정 ( Hye Jeong Hong ),이동옥 ( Dongok Lee ),이복남 ( Boknam Lee ),정의식 ( Euisik Jeong ),박정은 ( Jung Eun Park ) 한국보건정보통계학회 2015 보건정보통계학회지 Vol.40 No.3
Objectives: The aim of this study was to explore health status, health behavior, and medical service usage of foreign-born adults from multi-cultural families who actually live in Junggu, Seoul, Korea. This initiative is essential to establish a future medical support service model for multi-cultural families in Korea, which also provides a basis for developing community-based participatory action research. Methods: Samples of this study were 537 multi-cultural households living in Junggu, Seoul, Korea, whose nationality and current residence address were enrolled. Questionnaires were selected from the literature reviewed and modified for this study. Trained interviewers collected data. Data were analyzed using the SAS. Results: Data obtained from 253 adults aged over 19 were analyzed. The identified vulnerable group with priority for managing their health from this study was: Chinese nationality born, length of stay in Korea less than 10 years, the average monthly household income less than 2,000,000 won, and people who were not fluent in Korean language. From the results, the demand related to policy making in this area was identified: community service programs providing classes such as Korean language and Korean cuisine; medical service for menstrual irregularity/amenorrhea, arthritis, oral diseases, and depression; intervention programs for managing/reliving daily stress; the increase number of migrant-friendly healthcare facilities. Conclusions: It was possible to identify the ongoing health status of foreign-born adults of multi-cultural families who have lived in Junggu, Seoul. Migrant-friendly community health center based life cycle and or disease-specific healthcare service could be tailored for them. It also would be the basis for the community based participatory healthcare service model.