• Title/Summary/Keyword: Production Education

Search Result 1,863, Processing Time 0.023 seconds

Community Structure, Productivity, and Nutrient Uptake of the Vascular Plants in the Wetlands of the Asan-Lake (아산호 습지에서 관속식물의 군집 구조와 생산성 및 영양염류의 흡수)

  • Kim, Cheol-Soo;Son, Sung-Gon;Lee, Jeong-Hwan;Oh, Kyung-Hwan
    • The Korean Journal of Ecology
    • /
    • v.23 no.3
    • /
    • pp.201-209
    • /
    • 2000
  • The flora, distribution area, vegetation structure, annual net primary production, and nutrient uptake of the vascular hydrophytes, hygrophytes and mesophytes were investigated in the wetlands of the Asan-Lake, Chungchongnam-do and Kyonggi-do, Korea from March to October in 1997 to reveal the correlation between the plant community and the lake environment. The flora was composed of 38 families, 89 genera, 106 species, 14 varieties or total 120 kinds of the vascular plants. The life from of the hydrophytes were classified as 14 kinds of emergent plants, 5 kinds of submerged plants, and 4 kinds of free-floating plants, respectively. The number of species was various to 4 ∼85 kinds in each site. The dominant species was Zizania latifolia, and the importance values of Zizania latifolia, Typha orientalis, Phragmites communis, and Spirodela polyrhiza were 39.58, 14.90, 13.97, and 7.64, respectively. The distribution area of the emergent hydrophytes, hygrophytes, and mesophytes was 49.3 ㏊ (90.5%), and free-floating plants was 5.2 ㏊ (9.5%), whereas the floating-leaved and submersed plants were rare. Annual net production of the emergent hydrophytes, hygrophytes, and mesophytes was 547.9 ton D.W./yr (98%), and those of the free-floating plants was 10.5 ton D.W./yr (2%), and 558.4 ton D.W./yr in the whole lake ecosystem. The total uptake of nitrogen and phosphorus by the vascular plants was 7,099 and 1,891 ㎏/yr in the whole lake ecosystem.

  • PDF

The Performance Process Analysis of Goldberg Machine Activities based on Gender of Elementary Gifted Students (초등영재학생의 성별에 따른 골드버그 장치 활동 수행과정 분석)

  • Nam, Sora;Jhun, Yongseok
    • Journal of Gifted/Talented Education
    • /
    • v.26 no.2
    • /
    • pp.319-346
    • /
    • 2016
  • In this study, by examining the characteristics of boys and girls which would appear in the performance process of Goldberg machine activities, it would be attempted to provide the implications for the development and teaching methods of gifted and talented programs. The object of study was organized into separate 2 groups of boys and girls by each, composed of a total of 16 people among 5th graders of the gifted class in elementary school, located in Gyeonggi province. The final assignment was to make the Goldberg machine in order to have the beads get to the target spot latest, in which the analysis was implemented qualitatively by participating in and observing the performance process of students. After dividing the Goldberg machine activities into the steps of planning, production, outcome, assessment and reflection, their analysis results are as follows: First, in the planning stage, the girls explained minutely the process of Goldberg machine in writing, whereas the boys represented it visually simply. Second, in the production stage, the boys showed the task commitment by trying to realize the machine as designed initially, but the girls showed their appearance to represent it simply and easily. Third, in the sophistication and efficiency of the machine production, the boys were superior to the girls, and in the creativity and diversity of the use of materials, the girls were more excellent. Fourth, in the assessment and reflection, the boys evaluated it individually, and the girls showed their appearance to evaluate it by reflecting others'thinking. Hence, when developing and teaching the gifted and talented programs, it would be required that the teaching and learning contents be recomposed by considering the gender, or that the various class strategies be sought. Further, the broader and more systematic studies, on the performance process of gifted students based on the gender, should be carried out.

Development of "Movie Production Project" Science-Arts Convergence STEAM Program and its Effects on Elementary School Students' Career Orientation of Science, Career Awareness and Creative Personality ("영화공작소" 과학·예술 융합형 융합인재교육(STEAM) 프로그램 개발 및 초등학생의 과학 진로지향도, 진로인식 및 창의적 성향에 미치는 영향)

  • Yoo, Mi Hyun;Park, Gi-Su;Chang, Woo Jin;Suk, Hae Jung;Kim, Sunghwan;Park, Mun Sook;Lee, Jina;Lee, Chong-Sup;Jin, Suk Hee;Yu, Hwasoo;Jung, Hyunji;Choi, Jung Jin;Kang, Yun Hee
    • Journal of Science Education
    • /
    • v.40 no.1
    • /
    • pp.31-51
    • /
    • 2016
  • The purpose of this study was to develop "Movie Production Project" Science-Arts convergence STEAM program for elementary students and investigate the effects of the program on career orientation of science, career awareness and creative personality. Participants were 82 elementary school students. The results of this study were as follows: First, experimental group's total score of career orientation of science was significantly higher than that of comparative group. Among sub-areas, science learning preference, science career preference and perception on science career worth were significantly different between two groups. Experimental group's scores were significantly higher than those of comparative group. Second, experimental group's career awareness total score was significantly higher than that of comparative group including all sub-areas. Third, experimental group's creative personality total score was significantly higher than that of comparative group including 2 sub-areas, independence, openness. Finally, experimental group student's perception on the program showed that it was interesting, a little easy and they hoped to study again.

  • PDF

Impact of East Asian Summer Atmospheric Warming on PM2.5 Aerosols (동아시아 지역의 여름철 온난화가 PM2.5 에어로졸에 미치는 영향)

  • So-Jeong Kim;Jae-Hee Cho;Hak-Sung Kim
    • Journal of the Korean earth science society
    • /
    • v.45 no.1
    • /
    • pp.1-18
    • /
    • 2024
  • This study analyzed the effect of warming on PM2.5 aerosol production in mid-latitude East Asia during June 2020 using PM2.5 aerosol anomalies, which were identified by incorporating meteorological and climate data into the Weather Research Forecasting model coupled with Chemistry (WRF-Chem) model. The decadal temperature change trend over a 30-year period (1991-2020) in East Asia showed that recent warming has been greater in summer than in winter. Summer warming in East Asia generated low and high pressure in the lower and upper troposphere, respectively, over China. The boundary between the lower tropospheric low and upper tropospheric high pressure sloped along the terrain from the Tibetan Plateau to Korea. The eastern China, Yellow Sea, and Korean regions experienced a convergence of warm and humid southwesterly airflows originating from the East China Sea with the development of a northwesterly Pacific high pressure. In June 2020, the highest temperatures were observed since 1973 in Korea. Meanwhile, enhanced warming in East Asia increased the production of PM2.5 aerosols that travelled long distances from eastern China to Korea. PM2.5 anomalies, which were derived solely by inputting meteorological and climatic data (1991-2020) into the WRF-Chem model and excluding emission variations, showed a positive distribution extending from eastern China to South Korea across the Yellow Sea as well as over the Pacific Northwest. Thus, the contribution of warming to PM2.5 aerosols in East Asia during June 2020 was more than 50%. In particular, PM2.5 aerosols were transported from eastern China to Korea through the Yellow Sea, where the warm and humid southwesterly airflows implied wet scavenging of sulfate but promoted nitrate production.

A Study on The Family Life Education(II) -special Reference to marital life education- (가족생활 교육 프로그램 개발을 위한 기초연구(II)-부부교육을 중심으로-)

  • 오윤자
    • Journal of Families and Better Life
    • /
    • v.10 no.2
    • /
    • pp.209-229
    • /
    • 1992
  • The purpose of this study is to develop Family Life Education program for Marital education in Korea. In order to realize the about research purpose, this study is divided into three sections. First, nature conception and contents f Family Life Education, second, patterns and models for Family Life Education Program in USA and Korea, and Third, the future of Family Life Education. Family Life Education (FLE) is an education originated in reaction to changing social conditions, industrialization and urbanization, it deals with the perceived inadequacies of families to cope with these changes, thereby reduction social problems involved with, and improving family life. With and assumption that the studies about FLE have not been so active in Korea, the present thesis examines the FLE in Korea. The necessity of marital education in Korea Is based upon the theories of FLE in the United States of America. Also, it atempts to formulate a tentative plan for the promotion of a FLE program in Korea. The concept of FLE in Korea was manifested in the social educational law and life-span education. specified as 4th among ten presidential regulations. It is defined as " the Life-span developmental education to enhance the quality of human life, to solve family problems, to develop an individual's potentiality and to strengthen the family relations. of the FLE programs, the marital education is considered one of the furcial wubjects becaused it is the core of the family life. With this premise, FLE tries to wupport the healthy mrital relations. subsequently helping to explore the family potentiality and to strengthen family ties. The objects of the FLE program are unmarried, pre-marred , and married persons. For the married persons, the FLE program should be arranged in accordance with their rrital status divided by the family life cycle so that they may prevent possible family problems at each stage of the family life. Also, to prevent the problems occurred in the course of carrying out family functions, the FLE program should be provided with on the basis of a family unit, thereby improving the quality of the family functions. The FLE is to hep persons begin smoothly the adaption process for a successful marital relations. For the FLE to be practised more widely systematically, research on family education--that is basic study, research and production and evaluation or the FLE to be carried out by research institute wholly responsible for it-- should be done first.

  • PDF

Isolation and Cloning of Porcine SLC27A2 Gene and Detection of Its Polymorphism Associated with Growth and Carcass Traits

  • Wang, Tao;Liu, Chang;Xiong, Yuan-Zhu;Deng, Chang-Yan;Zuo, Bo;Xie, Hong-Tao;Xu, De-Quan
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.20 no.8
    • /
    • pp.1169-1173
    • /
    • 2007
  • The protein encoded by SLC27A2 gene is an isozyme of long-chain fatty-acid-coenzyme A ligase family, and it converts free long-chain fatty acids into fatty acyl-CoA esters, and thereby plays a key role in lipid biosynthesis and fatty acid degradation. In the present study, SLC27A2 located on human chromosome 15 was selected as candidate gene and we isolated and cloned partial fragments of mRNA sequence and genomic fragments of porcine SLC27A2 gene. The coding region of the gene as determined by alignments shared 90% and 82% identity with human and mouse cDNAs, respectively. Detection in LargeWhite and Meishan breeds showed that a single nucleotide polymorphism (SNP) ($A{\rightarrow}G$) existed in exon 7, which caused corresponding amino acid changed for encoding. In LargeWhite pigs it encoded for Val while in Meishan pigs it encoded for Ile, so we developed the PCR-RFLP genotype method for detection of this polymorphism. Association study in 135 $F_2$ reference family indicated that significant correlation existed between the polymorphism and growth and carcass traits.

Tablet PC based Convergence Educational Serious Game for Children (태블릿 PC 기반의 융합형 아동 교육용 기능성 게임)

  • Ko, Jeong-Won;Lee, Ji-Won;Kim, Mi-Hye;Jung, Hye-Kyung;Park, Sung-Jun
    • Journal of Korea Game Society
    • /
    • v.14 no.1
    • /
    • pp.59-68
    • /
    • 2014
  • As the prevalence of mobile platforms, expanding digital content production and also increasing interest about the serious game. However, existing educational serious games are short of application of educational function and lower effectiveness that not linked with off-line education. In this paper, we developed an educational serious game 'Rice-Mimi Adventure' for children based Tablet PC. The Games are designed five steps by four elements that storytelling, playing, music and cooking. Specially, players interaction between characters should be increase their own concentration and interest. For the effectiveness verification that linked education of on/off-line, experiment to 126 students of 3,4th grade in Choenan. A result shows positive data that on/off-line linked education using Tablet PC and effectiveness of game contents applied design factors. For this work, we should find effective class and teaching method using digital contents in off-line education for children.

Expression Analysis of miRNAs in Porcine Fetal Skeletal Muscle on Days 65 and 90 of Gestation

  • Chen, Jian-hai;Wei, Wen-Juan;Xiao, Xiao;Zhu, Meng-Jin;Fan, Bin;Zhao, Shu-Hong
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.21 no.7
    • /
    • pp.954-960
    • /
    • 2008
  • MiRNAs (microRNAs) are a class of small non-coding RNA molecules of ~21 nucleotides that down- regulate the expression of target genes at post-transcriptional level. In this study, we first accomplished a preliminary scan of miRNA expression using 65 and 90 day fetal pig skeletal muscle samples by microarray hybridization, and 34 miRNAs showed strong positive signals. Five of these miRNAs were selected for further investigation by real-time RT-PCR. The statistical analyses indicated that three miRNAs exhibited significant differential expression (p<0.05) during porcine muscle development from 65 to 90 days of gestation, e.g., miR-24 and miR-424 were down-regulated while miR-133a was up-regulated. Multi-tissue RT-PCR was performed to detect the expression patterns of the five miRNA precursors. The results showed that most of these precursor miRNAs were ubiquitously expressed in different porcine tissues.

Targeted Suppression of Connexin 43 in Ovine Preimplantation Embryos by RNA Interference Using Long Double-stranded RNA

  • Yan, Zhen;Ma, Yu Zhen;Liu, Dong jun;Cang, Ming;Wang, Rui;Bao, Shorgan
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.23 no.4
    • /
    • pp.456-464
    • /
    • 2010
  • RNA interference (RNAi) is an acknowledged useful and effective tool to study gene function in various cells. Here, we suppressed the Connexin 43 (Cx 43) gene expression during in vitro development of ovine pre-implantation embryos using the RNAi method. The 353 bp Cx 43 double-stranded RNA was microinjected into in vitro fertilized ovine zygotes, and the levels of target mRNA and protein were investigated. Control groups included uninjected zygotes or those injected with RNase-free water. The dsRNA injection resulted in the specific reduction of Cx 43 transcripts as analyzed by quantitative real-time RT-PCR and decreased protein levels as shown by Western blot analysis at the blastocyst stage. Microinjection of Cx 43 dsRNA led to 20.3%, 21.7% and 34.5% blastocyst rates and 19.2%, 37.5% and 41.3% hatched blastocyst rates in Cx 43 dsRNA-injected, water-injected and uninjected groups, respectively. Then the RNAi could not significantly affect cell number and cell death rates of blastocysts. Therefore, suppression of Cx 43 dsRNA and proteins did not apparently affect the development potential of ovine pre-implantation embryos but may play a role in embryo quality. RNAi technology is a promising approach to study gene function in early ovine embryogenesis.

A Study on Space Plan and Production for the Design Exploratorium - The Selection of Items and the Presentation of Alternative Plans in a Children′s Design Exploratorium - (디자인 체험전시관의 전시공간구성 및 연출에 관한 연구 - 어린이 체험관의 아이템 선정과 대안제시 -)

  • 고도재;임채진
    • Proceedings of the Korean Institute of Interior Design Conference
    • /
    • 2003.05a
    • /
    • pp.104-111
    • /
    • 2003
  • Today, design is considered to have competitive power for a county, so there has been various efforts such as education, publicity and development, etc. Design has long been a national material, and Korea Institute of Design Promotion(KIDP) was inaugurated for the purpose of education, publicity, development and the management, public ownership, support of the contents. Laying stress on the results, however, the design education for children which would be the heart of a world design power is short of both investment and systematic study of education. Now that the design education for children is being active, the cultural spaces are needed to transform the current system focused on schooling and textbooks into the participating, experiential ones by the interesting, educational, and entertaining presentation. The children design exploratorium should make children have their own feelings, and present communicative methods considering children's cognition and behaviors. So, in this study, I'd like to analyze characteristics of the participating and experiential exhibition, and present a children design exploratorium as an alternative plan by the application of adequate methods to the exhibition medium, and the analysis of current exploratoriums' features case by case. The children design exploratorium is the place to maximize the educational effect of design by children's easier and exciting participation, which would offer an unique exhibition place for children to comprehend designs. In this study, on the basis of the alternative presentation of children design exploratoriums, I would refer to the future direction of the 21st century pavilions, the search for the exhibition items for active design education, and the contribution to practical plans.

  • PDF