Loading [MathJax]/jax/output/CommonHTML/jax.js
  • Title/Summary/Keyword: 문제해결 지도

Search Result 8,302, Processing Time 0.098 seconds

A Study on the actual conditions of the use of them and the moves to strengthen home economics resources for school lifelong education in home economics teachers' view (가정과교사가 인식한 학교 평생교육을 위한 가정과 자원의 활용 실태 및 활성화 방안)

  • Kim, Sung-Hee;Chae, Jung-Hyun
    • Journal of Korean Home Economics Education Association
    • /
    • v.18 no.4 s.42
    • /
    • pp.127-141
    • /
    • 2006
  • The purpose of this study was to investigate the actual conditions of the use of them and the moves to strengthen home economics resources for school lifelong education for parents and local residents. This study conducted a systematic random sampling. Questionnaires were distributed to home economics teachers from 285 middle schools, 123 high schools, and 130 of them were sampled as the subjects of this study. The results of this study were as follows. First, home economics teachers were active participating school lifelong educational program. But according to the result of research on the actual condition, the proportion of taking part in it was low. More than half of home economics teachers who took part in program's lecturer were in charge of computer courses. So they didn't show their ability as expert. Also they were in charge of several works than roll of lecturers. It was mentioned too great a burden. There is little in-service training for meeting specialization for school lifelong education. They wanted to take part of lecturers of program and preferred hours of being over class. More than half of them had intended to obtain a lifelong educator's license. The part of elective courses for obtaining a lifelong educator's license is similar to home economics educational contents. So, they have an advantage of obtaining it. Second, one-fifth of school that gave school life education carried out program of related home economics. Mostly they had mothers of students-oriented programs on artistic and leisure. But this is that home economics teachers mentioned less important teaching at society in the future. They importantly mentioned program on children's education in now and the future. Parents of students and local residents also extremely wanted it. For differentiated school life education, quality of programs is important greatly. Third, the actual condition of practical room relating home economics is only practice to cook mostly. So they are reluctant to be open it because of being responsible for the results from using there. It is necessary to ameliorate there's facilities and to increase there's area. Fourth, home economics teachers want to improve their specialization through in-service training, to develop and diffuse programs of superior quality, and to get extra pay for overtime from the government.

  • PDF

Analysis of Vegetation Variation after the Rehabilitation Treatment of Stream (자연형 하천 공법 적용후의 식생변화분석 - 서울시 양재천의 학여울 구간을 중심으로 -)

  • Shin, Joung-Yi
    • Journal of the Korean Society of Environmental Restoration Technology
    • /
    • v.2 no.3
    • /
    • pp.10-17
    • /
    • 1999
  • In order to confirm the effectiveness of the natural river improvement technique, the analysis of vegetation was carried out in Yangjae stream between 1996 and 1998. The results of this study showed the numbers of riparian plants had increased from 41 species to 53 species, and the dominant species had changed from annual and biannual(Humulus japonicus, Persicaria thunbergii, Persicaria hydropiper, Panicum dichotomiflorum, Echinochloa crus-galli) to perennials (Phragmites communis). The variation in biomass and biodiversity index were measured and calculated according to the rehabilitation method. Biomass were varied 302 to 828g/m2 and biodiversity index was varied 1.53 to 1.52 at point bar plots(A treatment plots) from 1996 to 1998. In conclusion, the natural river improvement technique which has operated in Yanjaecheon for three years has contributed to restoration of riparian plants. Additionally, subsequent study using this technique should be followed in the near future.

  • PDF

A Study on Home Economics Teachers' Concern for Performance Assessment and Its Implementation (기술ㆍ가정과 교사의 수행평가에 대한 관심도, 실행수준, 실행실태 및 관련변수)

  • 정미정;채정현
    • Journal of Korean Home Economics Education Association
    • /
    • v.16 no.1
    • /
    • pp.79-91
    • /
    • 2004
  • The purpose of this study was to examine how much secondary school home economics teachers paid attention to performance assessment, to what extent and in which way they carried it out and how much support was given to that. It's basically meant to help provide more systematic support for performance assessment. The instrument used in this study was an Interest-Based Reform Adoption Model developed by Hall. Hord and et. al. at Texas University Research & Development Center for Teacher Education. and the subjects in this study were home economics teachers from 95 secondary schools in Gyeonggi province. After a survey was conducted by mail. the responses from 157 teachers were chosen for analysis. For data handling. SPSS/WIN program was utilized, and statistical data on mean. standard deviation and percentage were obtained. In addition. t-test and ANOVA were employed. The major findings of this study were as follows: First. as for their type of interest in performance assessment. influential type(35.0%) was most common. followed by confident type (29.3%). indifferent type(20.4%) and task type(15.3%). Second, regarding their implementation. every teacher carried out performance assessment. The largest group of the teachers fulfilled it as part of routine daily schedule(60 teachers. 38.2%). which could be called the level 4. The second largest group tried to integrate performance assessment to education programs(53 teachers. 33.8%). which could be called the level 5. The third largest group implemented it without making careful preparations for that(26 teachers. 16.6%). which could be called the level 3. and the fourth largest group tried to reinvent it(11 teachers. 7.0%), which could be called the level 6. The fifth largest group was in the middle of researching it(5 teachers, 3.2%). which could be called the level 1. And the sixth largest group was in the course of making preparations for that(2 teachers. 1.3%) . which could be named the level 2. Third. concerning how much they found themselves to be supported about performance assessment. they eave three or less marks to that. which showed that they weren't supported sufficiently There was little gap among them in their concern for performance assessment and its implementation levels. and this fact suggested that there wasn't satisfactory backup for their performance assessment.

  • PDF

Design and Performance Evaluation of Selective DFT Spreading Method for PAPR Reduction in Uplink OFDMA System (OFDMA 상향 링크 시스템에서 PAPR 저감을 위한 선택적 DFT Spreading 기법의 설계와 성능 평가)

  • Kim, Sang-Woo;Ryu, Heung-Gyoon
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
    • /
    • v.18 no.3 s.118
    • /
    • pp.248-256
    • /
    • 2007
  • In this paper, we propose a selective DFT spreading method to solve a high PAPR problem in uplink OFDMA system. A selective characteristic is added to the DFT spreading, so the DFT spreading method is mixed with SLM method. However, to minimize increment of computational complexity, differently with common SLM method, our proposed method uses only one DFT spreading block. After DFT, several copy branches are generated by multiplying with each different matrix. This matrix is obtained by linear transforming the each phase rotation in front of DFT block. And it has very lower computational complexity than one DFT process. For simulation, we suppose that the 512 point IFFT is used, the number of effective sub-carrier is 300, the number of allowed sub-carrier to each user's is 1/4 and 1/3 and QPSK modulation is used. From the simulation result, when the number of copy branch is 4, our proposed method has more than about 5.2 dB PAPR reduction effect. It is about 1.8 dB better than common DFT spreading method and 0.95 dB better than common SLM which uses 32 copy branches. And also, when the number of copy branch is 2, it is better than SLM using 32 copy branches. From the comparison, the proposed method has 91.79 % lower complexity than SLM using 32 copy branches in similar PAPR reduction performance. So, we can find a very good performance of our proposed method. Also, we can expect the similar performance when all number of sub-carrier is allocated to one user like the OFDM.

A Study on Comparative Analysis of Socio-economic Impact Assessment Methods on Climate Change and Necessity of Application for Water Management (기후변화 대응을 위한 발전소 온배수 활용 양식업 경제성 분석)

  • Lee, Sangsin;Kim, Shang Moon;Um, Gi Jeung
    • Journal of Korean Society of societal Security
    • /
    • v.4 no.2
    • /
    • pp.73-78
    • /
    • 2011
  • In order to resolve the problem of change in global climate which is worsening as days go by and to preemptively cope with strengthened restriction on carbon emission, the government enacted 'Framework Act on Low Carbon Green Growth' in 2010 and selected green technology and green industry as new national growth engines. For this reason, the necessity to use the un-utilized waste heat across the whole industrial system has become an issue, and studies on and applications of recycling in the agricultural and fishery fields such as cultivation of tropical crops and flatfishes by utilizing the waste heat and thermal effluent generated by large industrial complexes including power plants are being actively carried out. In this study, we looked into the domestic and overseas examples of having utilized waste heat abandoned in the form of power plant thermal effluent, and carried out economic efficiency evaluation of sturgeon aquaculture utilizing thermal effluent of Yeongwol LNG Combined Cycle Power Plant in Gangwon-do. In this analysis, we analyzed the economic efficiency of a model business plan divided into three steps, starting from a small scale in order to minimize the investment risk and financial burden, which is then gradually expanded. The business operation period was assumed to be 10 years (2012~2021), and the NVP (Net Present Value) and economic efficiency (B/C) for the operation period (10 years) were estimated for different loan size by dividing the size of external loan by stage into 80% and 40% based on the basic statistics secured through a site survey. Through the result of analysis, we can see that reducing the size of the external loan is an important factor in securing greater economic efficiency as, while the B/C is 1.79 in the case the external loan is 80% of the total investment, it is presumed to be improved to 1.81 when the loan is 40%. As the findings of this study showed that the economic efficiency of sturgeon aquaculture utilizing thermal effluent of power plant can be secured, it is presumed that regional development project items with high added value can be derived though this, and, in addition, this study will greatly contribute to reinforcement of the capability of local governments to cope with climate change.

  • PDF

Effects of a Weight Control Program on Anthropometric Measurements and Serum Lipid Profiles of Obese Elementary Students (초등학교 비만관리 프로그램이 비만 아동의 체구성 성분과 혈청 지질 수준에 미치는 영향)

  • Nam, Jung-He
    • The Korean Journal of Food And Nutrition
    • /
    • v.20 no.1
    • /
    • pp.88-95
    • /
    • 2007
  • The purpose of this study was to investigate the effects of a 12 week weight control program, which included nutrition education and regular physical fitness, on body weight, degree of obesity, BMI, and lowering of blood lipids in 16 obese male elementary school students. Changes in waist and hip circumferences and their ratios were measured at the conclusion of the 12 week program conducted from September 9 to November 25, 2005. Body weight after 12 weeks on the program slightly reduced from 55.4±10.9 kg to 54.4±9.7 kg. Degree of obesity and BMI decreased from 121.3±8.1%, and 25.9±3.3 to 120.0±8.2% and, 25.6±2.7, respectively. Body fat percentage decreased slightly from 38.3±4.7% to 37.9±5.2%. Waist to hip ratio did not change after 12 weeks. There were slight changes in weight of body fat and lean body mass from 22.12±6.53 kg and 34.56±4.75 kg to 21.68±6.05 kg and 34.70±4.54 kg, respectively. Also, after 12 weeks on the weight control program, body, waist, and hip circumferences decreased. However, there were no significant differences among the blood lipid components, including triglycerides, total cholesterol, and HDL-cholesterol. Finally, body weight, degree of obesity, BMI, and body fat showed more significant correlations to waist, hip circumference and their ratio than to blood lipid levels.

Evaluation of Perception for Foodservice Hygiene by Middle School Students in Busan (부산지역 일부 중학생의 학교급식 위생에 대한 인식 평가)

  • Kim, Yeo Kyeong;Choi, Hee Sun;Lyu, Eun Soon
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.43 no.12
    • /
    • pp.1920-1928
    • /
    • 2014
  • The purpose of this study was to evaluate the importance and performance of middle school foodservice hygiene in Busan. In this study, questionnaires were administered to 1,000 students consisting of 100 students in 10 middle schools in Busan in December, 2013. The students assessed importance and performance of personal hygiene as 3.81 and 3.60 on a scale of 5.00, respectively. Males gave higher scores to importance and performance of personal hygienic than females. First grade students gave significantly higher scores than 2nd and 3rd grade students to importance and performance of personal hygienic. The mean scores of importance of foodservice hygiene were 4.47 for food hygiene, 4.25 for equipment hygiene, 4.23 for employee hygiene, and 4.19 for environment hygiene. For importance of foodservice hygiene, females gave significantly (P<0.001) higher scores than males. However, male gave significantly higher scores than females for performance of foodservice hygiene. The importance and performance grid showed important factors for personal and foodservice hygiene. 'Hand washing before eating the meal' for personal hygiene and 'cleanliness of tray' for foodservice hygiene showed the highest importance and lowest performance scores. Foodservice hygiene can be improved through customized education of students regarding meal service and food hygiene, equipment hygiene, and environment hygiene.

A Study on the Effects of CRM System Installment in Customer Performance of Hotel Business (호텔기업의 CRM 시스템 구축이 고객성과에 미치는 영향에 관한 연구)

  • Kim, Jeong-Seung
    • Journal of Global Scholars of Marketing Science
    • /
    • v.11
    • /
    • pp.147-163
    • /
    • 2003
  • Recently it is necessary that Hotel business introduce Information Technology to enhance competitive advantage and cope with changeable business promptly in management. Thus in an effort of using Information Technology strategically, Many Hotel business tries to install CRM system (Customer Relationship Management). This study tries to analyze the effects on customer performance by installing CRM system if it is in charge of major strategic system, it can get successful customer performance. I hypothesize to resolve the problem, and search preceding study results concerning the elements of CRM Installment and Customer performance. The survey was taken to emplyees in the field of CRM installment in Luxury hotel to test the hypothesis. To summarize the results, first, CRM intallment affects CRM customer performance. in short, systematic feature, management environment, information intention, and technologic element affect it. Through this study, facing the limitation and future study are below. first, additional parameter should be considered though I reviewed the elements affecting CRM customer performance by searching and abstracting preceding studies. Second, There are lack of preceding studies because it has passed only a couple of years since Korean businesses deal with CRM system and there is the limitation to compare this result with others due to few empirical analysisses. Especilly, I can hardly find the preceding study concerning hotel industry but tries to search preceding parameter as to the customer performance of CRM system. Until now, It is needed to continual study its measurement later. I believe that more specific study and precise theoretical test be performed and they deal with current CRM system installment and facing problems in all of the korean hotels.

  • PDF

A Survey on Status of Pregnancy and Delivery at a Rural Village, Nepal(Dolakha Bazar Area) (네팔 돌카지역의 임신분만 환경)

  • Ahn, Young-Woo;Kang, Yune-Sik;Kam, Sin;Lee, Jong-Young
    • Journal of Preventive Medicine and Public Health
    • /
    • v.29 no.4 s.55
    • /
    • pp.721-732
    • /
    • 1996
  • This study was conducted to investigate the status of pregnancy and delivery and relationship among knowledge, attitude and practice about pregnancy and delivery in poor country, Nepal. A questionnaire survey by interviewer was conducted to examine the general characteristics, knowledge about pregnancy and delivery, attitude about pregnancy and delivery, the rate of prenatal care and delivery condition of women who had an experience of delivery during last year(1994.4.131995.4.12) at a rural area, nepal(Dolakha Bazar Area). The major findings are as follows ; Among respondents, 87.5 percentage never had health education and the degree of knowledge about pregnancy and delivery was low. Among respondents, 56.6 percentage had the attitude that they didn't want antenatal care, 42.8 % of respondents answered that they wouldn't visit hospital or health center when vaginal bleeding occurred and 82.9% thought that the delivery itself was dirty. The proportion of women who experienced antenatal care was 28.3%, the proportion of health facilities delivery was 5.3%, which was very low and 82.6% of home delivery case didn't sanitate the tool to cut the umbilical cord. The women who had positive attitude about antenatal care and health facility utilization experienced more antenatal care and health facilities delivery. On consideration of above findings, health education for pregnancy and delivery is required to improve mother-child health status in poor country. To make efficient health education, the target population group, such as the uneducated, inhabitants far from health center or medical facility, must be chosen. To help the poor countries in medical field, the study on health status and its related factors on these countries like this article would be required.

  • PDF

담자균류 β -글루칸의 특성 및 생산

  • Hong, Eok-Gi
    • Proceedings of the Korean Society of Life Science Conference
    • /
    • 2002.05a
    • /
    • pp.17-22
    • /
    • 2002
  • 지구상에는 수천종의 버섯류가 자생하고 있어 유전자원으로서의 중요성이 지대할 뿐만 아니라 기능성 식품소재 및 각종 약리 활성을 나타내는 신약개발 소재로도 크게 주목을 받고 있다. 이들 버섯은 균사체의 영양대사로 얻어지는 대사산물이 축적된 자실체의 형태로 나타나는데, 최근에 와서 자실체 및 균사체의 추출물이나 균사체 배양물이 체질개선이나 각종 병의 예방과 치료에 효과가 있는 것으로 밝혀져 건강식품이나 의약품으로서의 용도가 크게 증가하고 있는 실정이다. 특히, 담자균이 생산하는 특정 구조를 갖는 다당류는 오래전부터 종래의 화학요법제와는 달리 숙주내의 면역 기능을 부활하여 소위 면역요법제로서의 항암효과를 나타냄이 알려져왔었다. 현재까지 제약 및 의학적인 방법이 질병의 주된 치료방법으로 이용되어 왔지만 최근에 특정식품의 섭취가 만성질환의 발생을 억제 또는 지연시킨다는 연구 보고가 나오면서부터 만성질환의 치료방법으로서 식이요법을 중요하게 생각하게 되었다. 따라서 새로운 식품소재 및 가공식품의 개발을 통한 성인병 등의 각종 질병예방이 국민보건문제 해결에 필수적이다. 현재 일본 등에서는 표고버섯, 구름버섯 및 치마버섯 유래의 다당체 또는 단백다당체인 lentinan, krestin 또는 PS-K, schizophyllan 및 PSP 등이 실용화되어 높은 가격에 판매되고 있다. 국내에서도 야생 구름버섯 자실체로부터 추출한 단백 다당체인 Copolang(광동제약)이 개발되어 PS-K와 유사하게 암의 치료에 병행 사용되고 있고, 또 강력한 항암활성이 보고된 상황버섯의 균사체 추출물인 단백 다당체가 Mesima-Ex FK(한국신약)라는 상품명으로 암의 치료에 병행 사용되고 있는 것으로 알려지고 있다. 담자균류와 아울러 미생물 유래 다당체는 그 구조와 특성에 있어서 매우 다양함을 지니고 있다. 이러한 미생물 유래 다당류의 공업적 생산과 이용에 대한 연구로서는 Leuconostoc mesenteroides가 생산하는 dextran이 혈장증량제로 개발된 이래 Xanthomonas campestris가 생산하는 pullulan, Zoogloea rgmigera가 생산하는zooglan둥이 대표적인 예로 보고되고 있다. 한편, 미생물 유래 다당류는 구성당, 분자량, 화학적 구조 등과 같은 특성의 차이에 의해 많은 종류가 존재하고 있으며, 다양한 물성 및 유화제, 응고제, gel 형성제, 필름 형성제, 흡착제, 안정제, 접착제 등과 같은 용도로 광범위하게 이용되고 있다. 또한 근래에 들어서는 미생물 유래 다당체가 지니는 항암활성이 확인되어 새로운 의약품으로서의 개발 가능성이 기대된다. 그 밖에도 기존에 알려져 있는 식물 및 해조류 유래의 다당체와는 달리, 발효조를 이용한 연속배양에 의해 공업적 대량 생산이 가능하며, 더욱이 생산된 다당체의 분리 및 회수가 용이하다는 이점을 지니고 있다. 최근에 들어서는 유전공학적 기법을이용한 고생산성 변이균주 및 새로운 기능을 지닌 다당체의 개발에 관한 연구가 보고되고 있는 등 고부가가치를 지닌 새로운 바이오 소재로서의 기능 및 용도 개발에 관한 연구가 활발히 진행되고 있다. 이러한 항암 활성을 나타내는 여러 가지 담자균류중 Agaricus blazei로부터 생산되는 다당체는 고형암 이외에 S형 결장암, 난소암, 유방암, 폐암, 간암 등에 효과가 입증되었고, 천연물질에 의한 암 면역요법으로 각광을 받고 있으며, 항암 및 항virus의 완치율과 저지율에서 현재 여러가지 약효가 있는 버섯중에서도 탁원한 효과가 있는 것으로 증명되고 있다. 이들 다당체는 사이토카인을 생산시켜서 T임파구와 B임파구의 항원 특이적인 면역반응을 활성화시키고, 세포장해성 T세포와 활성화 대식세포의 세포장해 기능을 충진시켜서 암세포를 파괴시킨다. 또한 콜로니 자극인자인 사이토카인을 생산시켜서 면역담당세포의 신생을 촉진시키기도 하며, 암의 화학요법과 방사선 요법으로 저하된 백혈구를 회복시키는 역할을 한다. 따라서 최근의 연구동향은 생산된 다당체의 항암활성을 향상시키고자 하여 배양기간중에 interleukin을 의도적으로 첨가하는 경향이 있다. 이러한 항암 활성을 나타내는 담자균체 유래 다당체는 버섯의 기원에 따라 그 형태에 약간의 차이를 나타내기는 하나 그 기본 형태는 β(1,6)glucosyl 분지를 가진 β(1,3)glucan이며, 평균 분자량은 50 200만 정도이다. Agaricus blazei의 원산지인 브라질의 피에다데(Piedade) 지방의 환경조건(산지의 습도는 80%, 낮 기온 $35^{\circ)C$, 밤 기온 2025C로 대단히 높으며, 정기적으로 열대지방 특유의 소나기가 내리는 지역)에서 볼 수 있듯이 Agaricus blazei의 성장 환경은 매우 까다로운 편이며, 날것으로는 보관이 잘 안되기 때문에 그 재배에 큰 어려움이 있다. 또한, 고체배양에 의해 생산된 버섯 자실체로부터 유기용매 및 열수추출 방법으로 다당체를 생산하는 방법은 균일한 형태의 버섯 자실체를 공급받기가 어렵기 때문에 다당체의 생산 수율이 낮고, 많은 노동력이 요구되는 어려움이 있다. 그러나 액체배양에 의한 다당체 생산의 경우는 고체배양에 의한 다당체 생산에 비해 일정한 조건하에서 배양이 가능하다는 장점이 있으며, 항상 균일한 균사체 및 배양액을 얻을 수 있다. 따라서 원하는 유용물질을 쉽게 획득할 수 있는 장점이 있다.

  • PDF