• Title/Summary/Keyword: Experimental economics

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Effects of the Source of the Dietary Protein on Serum Lipids and Glucose in Streptozotocin-diabetic Rats (식이 단백질의 급원에 따른 당뇨쥐의 혈당 및 혈청지질에 미치는 영향)

  • Lee, Su-Jin;Kim, Young-Jin;Park, Su-Jeong;Kim, Hui-Jung;Lee, Yun-Hui;Yoo, Young-Sang
    • Journal of the East Asian Society of Dietary Life
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    • v.7 no.2
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    • pp.153-158
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    • 1997
  • This study was designed to find out the effects of soybean protein and milk protein between nondiabetic and diabetic rats. The experimental results are summarized as follows. 1. Total food intake was higher in diabetic soybean protein group than other groups but it was not significant. 2. The change of body weight was lower in diabetic soybean protein group than other groups and the soybean protein was effective to maintain the ideal body weight. 3. The effects of lowering total cholesterol and glucose in serum was higher in soybean protein groups than the milk protein groups.

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The Effects of Practical Problem Based Home Economics Instruction Using Multiple Intelligences for the Prevention of School Violence by High School Students (다중지능을 활용한 실천적 문제 중심 가정과 수업이 고등학생들의 학교폭력 예방에 미치는 효과)

  • Choi, Seong-Youn;Chae, Jung-Hyun
    • Human Ecology Research
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    • v.56 no.3
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    • pp.283-300
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    • 2018
  • This study examined the effects of a practical problem based home economics instruction using multiple intelligences teaching and learning methods for the prevention school violence by high school students'. The contents of this study are as follow. 1) Develop the practical problem-based instruction using multiple intelligence and teaching and learning strategies for each protective factor both in teaching method aspects and learning content aspects during the 29-period of lesson plans. 2) Examine the effects of the instruction in the changes of pre- and post- impulsivity and aggression, self-esteem, empathy and attitudes to school violence after implementing home economics lesson plans. 3) Evaluate the instruction. The subjects of this study were 288 first grade students (124 male and 164 female students). The study utilizes a quasi-experimental pre-post design. The effect of the instruction by the paired t-test results showed that the aggression and impulsivity by the learners had been lowered; however, empathy and self-esteem increased; in addition, learners' attitudes toward school violence had changed positively. In conclusion, self-esteem in school as sub-variables of self-esteem increased; however, there was no statistically significant difference.

An Economic Valuation of Forest Ecosystem Services: A Choice Modeling Application to the Mekong Delta Project in Vietnam

  • KHAI, Huynh Viet;VAN, Nguyen Phi;DANH, Vo Thanh
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.8
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    • pp.465-473
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    • 2021
  • This study is the application of a choice experiment to assess Mekong Delta urban households' preferences and motivations for ecosystem conservation in the U Minh forest. The study applied a choice modeling approach to estimate the economic values of the proposed ecosystem conservation program in the U Minh forest by accessing urban consumer preferences and their willingness to pay for the project. Discrete choice experimental data was collected from 450 residents in the cities of the Vietnamese Mekong Delta. The multinomial logit model was employed to identify consumer's stated preferences for the environmental and sustainability attributes of the conservation project. The results showed that Mekong Delta urban residents paid much attention to the proposed project to protect and develop the U Minh forest. In addition, the results showed that higher education, income, and knowledge of the U Minh forest revealed a higher likelihood of selecting the project, while the older residents would select the status quo more than the younger ones. The study also proved that the effect of participation had a strong impact on the willingness to pay for the project. The findings could be useful for policymakers to take action to raise resident's awareness and willingness to pay for the U Minh forest project.

Development of Instructional Materials about Physical Fiber Identification Method in Home Economics Lesson of the Middle School (물리적 섬유감별방법에 대한 중학교 의복재료 단원 탐구활동지 개발)

  • Lee, Heeran
    • Journal of Korean Home Economics Education Association
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    • v.28 no.3
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    • pp.65-77
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    • 2016
  • The purpose of this study is to develop an inquiry sheet for the contents of the clothing curriculum of home economics in middle schools using a physical fiber Identification method to increase students' interests in and understanding of clothing materials. Therefore, a physical fiber Identification method suitable to middle school students was developed in actual classrooms and the effects were analyzed. As a result, the physical fiber identification method was developed to distinguish between wool and acrylic knits; moreover, the identification method between silk and polyester fiber was studied. And then the inquiry sheet using fiber identification method was also developed. When interests in learning, attitudes of acceptance toward learning, and learning achievements of the experimental group (used the inquiry sheet) and the control group (did not use the inquiry sheet) were compared, the experimental group scored higher in every category, all of which were meaningful differences. Thus, this study demonstrated that the developed fiber differentiation method and inquiry sheet improved self-directed learning as well as learners' understanding of clothing materials by enabling the application the knowledge to the learners' realities.

Consequentiality and Hypothetical Bias in Contingent Valuation Method: An Experimental Investigation (가상가치평가법에서의 결과수렴성과 가상편의)

  • Lee, Jinkwon;Hwang, Uk
    • Environmental and Resource Economics Review
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    • v.29 no.1
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    • pp.1-22
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    • 2020
  • While contingent valuation method (CVM) has been widely used for non-market valuations, it has been argued that it may suffer from hypothetical bias. However, if CVM respondents believe that their responses could affect the real consequence, the method could satisfy consequentiality. If a CVM satisfies a sufficiently high consequentiality, hypothetical bias could disappear as shown by some previous studies. In this study, we experimentally compare the willingness to pay (WTP) for donation of a relatively high consequentiality group with that of a relatively low consequentiality group for Korean university students. We find that both the existence probability and the size of hypothetical bias are lower for the high consequentiality group. This result implies that a CVM for a real policy including environmental policies could be free from hypothetical bias because its consequentiality would be relatively high, and warrants a future field study investigating the effect of consequentiality on hypothetical bias.

Hot Keyword Extraction of Sci-tech Periodicals Based on the Improved BERT Model

  • Liu, Bing;Lv, Zhijun;Zhu, Nan;Chang, Dongyu;Lu, Mengxin
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.16 no.6
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    • pp.1800-1817
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    • 2022
  • With the development of the economy and the improvement of living standards, the hot issues in the subject area have become the main research direction, and the mining of the hot issues in the subject currently has problems such as a large amount of data and a complex algorithm structure. Therefore, in response to this problem, this study proposes a method for extracting hot keywords in scientific journals based on the improved BERT model.It can also provide reference for researchers,and the research method improves the overall similarity measure of the ensemble,introducing compound keyword word density, combining word segmentation, word sense set distance, and density clustering to construct an improved BERT framework, establish a composite keyword heat analysis model based on I-BERT framework.Taking the 14420 articles published in 21 kinds of social science management periodicals collected by CNKI(China National Knowledge Infrastructure) in 2017-2019 as the experimental data, the superiority of the proposed method is verified by the data of word spacing, class spacing, extraction accuracy and recall of hot keywords. In the experimental process of this research, it can be found that the method proposed in this paper has a higher accuracy than other methods in extracting hot keywords, which can ensure the timeliness and accuracy of scientific journals in capturing hot topics in the discipline, and finally pass Use information technology to master popular key words.

Effects of onion extracts (Allium cepa) inclusion in diets on growth performance, carcass characteristics, and bone morphometric of broiler chickens

  • E. Malematja;T. G. Manyelo;J. W. Ng'ambi;M. F. D. Nemauluma;S. D. Kolobe
    • Animal Bioscience
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    • v.36 no.7
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    • pp.1075-1082
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    • 2023
  • Objective: Animal feed companies and researchers are currently embarking on quests for feed additives that could combat the pathogens while promoting growth as well as maintaining quality products. The current study aimed to evaluate the effects of onion extracts on growth performance, carcass quality, and bone morphometrics of broiler chickens. Methods: A total number of 200 one-day-old unsexed Ross 308 broiler chicks were assigned to 5 treatment groups, replicated 4 times. Each replicate (pens) held 10 chickens in a completely randomized design. The experimental diets were then randomly allotted to the pens which act as experimental units. The isoenergetic and isonitrogenous diets were formulated by including onion extracts at 0, 5, 10, 15, or 25 g/kg in a complete broiler diet. Feed intake, and body weight, were recorded then used to calculate feed conversion ratio. At the end of the experiment (42 days), four chickens from each pen were randomly selected for slaughter for carcass, bone morphology and sensory evaluation. Results: Results showed that onion extract supplementation did not affect (p>0.05) growth performances and meat sensory evaluation. However, there was a significantly increased (p<0.05) meat shear force in groups receiving onion extracts dietary treatments. Furthermore, onion extracts improved (p<0.05) bone morphology of broiler chickens in terms of weight, diameter, calcium, and phosphorous contents. Conclusion: In conclusion, onion extracts can be safely included in a commercial broiler diet as a growth promoter without causing adverse effects on growth performance traits and carcass quality in chickens. Onion extract supplementation improved tibia bone growth and strength in broiler chickens.

The Effect of Gender Equality Instruction in Home Economic class on the High School Students Consciousness of Gender Equality - focused on the Unit of Design of Home Life - (가정과에 적용한 양성평등 수업이 고등학생의 남녀평등의식에 미치는 효과)

  • Bae Eun-Ju;Lee Song-Ja
    • Journal of Korean Home Economics Education Association
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    • v.17 no.1 s.35
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    • pp.1-13
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    • 2005
  • This study was a quasi-experimental study conducted in ${\ulcorner}$Design of Home Life${\lrcorner}$ unit of high school Home Economics. The purposes of this study was to analyze the effects of gender equity instruction on gender equity consciousness of high school students, and to raise gender equity consciousness of students. The summarized results of this study were as follows; 1. After experiment. gender equality consciousness of experimental group was higher than that of comparison group in all four areas, that is, home life, school life, vocational life and socio-cultural life. So there was statistically significant differences in gender equity consciousness between two groups. 2. The gender equity consciousness of the experimental group was higher In post-test than pre-test, so there was statistically significant differences between pre-test and post-test. On the other hand, there was no statistically significant difference between pre-test and post-test in the comparison group. 3. After experiment, the change-rate of the gender equality consciousness In the experimental group was higher than that of in the comparison group, so there was statistically significant differences between two groups in the change-rate. As results of this study, in the ${\ulcorner}$Design of Home Life${\lrcorner}$ unit of high school Home Economics, it was proved that the gender equity class was effective on raising the gender equality consciousness of high school students in all four areas of home life, school life, vocational life and socio-cultural life.

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Design and Application of Career Education Program Related to the Subject Manual Training and Home Economics of Middle School (중학교 기술·가정교과와 연계한 진로교육 프로그램의 구안과 적용)

  • Lee, Hee Soon;Kim, Hee Jin;Yun, Song Hea;Cheon, Seong Moon
    • Journal of vocational education research
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    • v.29 no.3
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    • pp.247-263
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    • 2010
  • The purpose of this study is making the career education program related to the subject, Manual Training and Home Economics, to present the effective guidance and to improve career maturity of students about the unit, "Making a choice of career and Job ethics" of middle school senior's course. In order to estimate this program, 60 students of 2 classes were chosen as research subjects among middle school seniors and each of classes was divided into two groups, an experimental group and a control group. After the experimental group was trained the career education program related to Manual Training and Home Economics for 15 sessions, the effect was verified by comparing tests before and after program execution. In order to prove effects of the program. Each grade of both the experimental group and the control group was taken analysis of covariance (ANCOVA). Result of the program experiment is following. First, after executing the career education program related to Manual Training and Home Economics to the experimental group, participants showed that both attitude and ability for career maturity were improved in each sub-factor field of the career maturity as a result of tests before and after program execution. Second, in program satisfaction estimation, most of students had a positive attitude and in every time satisfaction, they made high estimation on the program, especially including the proper level of students and interesting activities. Finally, the final program was completed based on the result of effect analysis of the program.

Effects of Practical Reasoning Instruction on Problem Solving Ability (실천적 추론 가정과 수업이 문제해결력에 미치는 효과)

  • Yoo, Tae-Myung;Lee, Hyo-Soon
    • Journal of Korean Home Economics Education Association
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    • v.21 no.2
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    • pp.203-215
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    • 2009
  • A research problem for this study is formulated: "Is practical reasoning instruction effective on raising problem solving ability?" This study is a quasi-experimental study with independent variable of practical reasoning instruction and dependent variable of problem solving ability. Six class hours of experimental input for the 'Housing space' is implemented for an experimental group. T-test results show that practical reasoning instruction is effective on total problem solving ability whereas is not effective on 'implementing alternative action' sub-area of problem solving. This study suggests for the future studies to systematically design practical reasoning classes in consider of appropriate class times and sub-areas of problem solving. Input of an experienced teacher of practical reasoning is also recommended to generalize the results of the experimental study.

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