• Title/Summary/Keyword: Hypothesis

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Development of a Descriptive Paper Test Item and a Counting Formula for Evaluating Elementary School Students' Scientific Hypothesis Generating Ability (초등학생의 과학적 가설생성능력 평가를 위한 서술형 지필과제 및 가설생성능력지수 산출식의 개발)

  • Jo, Eun Byul;Shin, Dong Hoon
    • Journal of Korean Elementary Science Education
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    • v.35 no.2
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    • pp.137-149
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    • 2016
  • The purpose of this study is to develop a descriptive paper test item which can evaluate elementary school students' HGA (scientific Hypothesis Generating Ability) and to propose a counting formula that can easily assess student's HGA objectively and quantitatively. To make the test item can possibly evaluate all the students from 6th graders to 3rd graders, the 'rabbit's ear' item is developed. Developed test item was distributed to four different elementary schools in Seoul. Total 280 students who were in the 6th grade solved the item. All the students' reponses to the item were analyzed. Based on the analyzed data evaluation factors and evaluation criteria are extracted to design a Hypothesis Generating ability Quotient (HGQ). As the result 'Explican's Degree of Likeness' and 'Hypothesis' Degree of Explanation' are chosen as evaluation factors. Also precedent evaluation criteria were renewed. At first, Explican's Degree of Likeness evaluation criterion was turned four levels into three levels and each content of evaluation criterion is also modified. Secondly, new evaluation factor 'Hypothesis' Degree of Explanation' was developed as combined three different evaluation criteria, 'level of explican', 'number of explican' and 'structure of explican'. This evaluation factor was designed to assess how the suggested hypothesis can elaborately explain the cause of one phenomenon. Newly designed evaluation factors and evaluation criteria can assess HGA more in detail and reduce the scoring discordant through the markers. Lastly, Developed counting formula is much more simple than precedent Kwon's equation for evaluating the Hypothesis Explanation Quotient. So it could help easily distinguish one student's scientific hypothesis generating ability.

Development of Elementary Students' Ability to Generate Hypothesis Knowledge through Knowledge Generation Learning in Science (과학 지식 생성 학습을 통한 초등학생들의 가설 지식 생성 능력의 발달)

  • Kang, Eun-Mi;Shin, Dong-Hoon;Kwon, Yong-Ju
    • Journal of Korean Elementary Science Education
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    • v.25 no.3
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    • pp.257-270
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    • 2006
  • The purpose of this study was to develop elementary students' ability to generate hypothesis knowledge through knowledge generation learning in science. The learning program consisted of a series of 28 activities to generate hypotheses in science. Eighty 6th grade students participated in the study and were divided into experimental and control groups. The experimental group was administered a program geared towards hypothesis generation learning and the control group was administered a program aimed at hypothesis expository learning in elementary science. After using the respective programs, subjects in both groups were tested in terms of their abilities in abductive knowledge generation and administered a descriptive self-report regarding their generation of hypotheses. Two of the 28 activity program worksheets in the experimental group were analyzed in terms of the quality and process of students' hypothesis generation. The results were as follows: 1) The experimental group showed significantly higher scores in terms of scientific knowledge generation (i.e. abductive knowledge generation) than the control group. 2) The degree of hypothesis explanation in the experimental group was significantly higher than in the control group in terms of the quality of the generated hypotheses. In addition, students in the experimental group generated more varied and valid knowledge than the control group in terms of sub-knowledge of hypothesis generation. Therefore, it can be argued that this program for hypothesis knowledge generation in elementary science students was effective in the generation of hypothesis knowledge.

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The Analysis of Elementary School Students' Hypotheses in the Field Trip Contest of the Second Korean Youth Science Festival (자연보호답사대회 보고서에 진술된 국민학생의 가설능력의 분석)

  • Koo, Soo-Jeong;Pak, Sung-Jae
    • Journal of The Korean Association For Science Education
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    • v.15 no.1
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    • pp.116-125
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    • 1995
  • This study is to consider hypotheses with integral view on the respect of creative thinking. Subjects of this study are Korean students in the 5th grade who participated in the Field Trip Contest of the second Korean Youth Science Festival, an openended inquiry investigation. Objectives of this study are as follows: 1) to measure the inquiry level of the Field Trip Contest activity 2) to find how many hypotheses were made on different types in the inquiry investigation 3) to measure the quality level of hypotheses made in the scientific inquiry investigation 4) to find out the correlation between the 1st and 2nd hypotheses and the final activity score in the two staged scientific investigation In the consequence of it, inquiry level of the Field Trip Contest was very high with good activity topics and openended way of investigation. Hypotheses were made in the prediction, plan, and conclusion parts in the field trip activity report. They used hypothesis-as-prediction typed statements(3.41/team) more than hypothesis-as-explanation(1.28/team) and descriptive hypothesis(0.03/team) types. Content-related hypothesis(5.03/team) and process-related hypothesis(6.16/team) were usually coupled each other. Most of them had difficulties in hypothesis-from-evidence(0.31/team, 10/32 teams) in the comparison of hypothesis-from-simple conjecture(10.62/team). The quality level of content-related hypotheses(0.74point/statement) and process-related hypotheses(1.98point/statement) were very low by the hypothesis-quality scale(Quinn and George, 1975) for the content-related hypotheses and the process-related hypothesis quality scale developed in this study. There was considerable correlation between the activity score and the 1st and 2nd hypothesis in the 2 staged inquiry investigations with the 2nd and 3rd topics($0.41{\ast}$, $0.59{\ast}{\ast}$ repectively).

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A Study on the theory of cosmos in ${\ulcorner}$Hwangje-Naegyeong(黃帝內經)${\lrcorner}$ ("황제내경(黃帝內經)"의 우주론(宇宙論)에 관(關)한 연구(硏究) - "황제내경(黃帝內經)"에 나타난 우주본체론(宇宙本體論)과 천체구조론(天體構造論)에 관한 연구-)

  • Kim, Shin-Hyung;Jang, Woo-Chang;Jeong, Chang-Hyun
    • Journal of Korean Medical classics
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    • v.19 no.3
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    • pp.184-197
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    • 2006
  • ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$ described Tae Hue(太虛) cosmos which consist of the Great Gi(大氣) produce ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$ which affected by the theory of activity of Gi(氣化說) in the Han period represent that Tae Hue is spring head of Gi(氣), concurrently said the Time and the Space were established by operating of Gi(氣). As of the Theories of heavenly structure, ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$ was write in long perod, so it include three branch theory. ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$ contained the Hypothesis of Covering Heaven(蓋天說), the Hypothesis of Armillary Sphere(渾天說) and the Hypothesis of Chaosheavens(宣夜說) in the Han perod. The Hypothesis of Covering Heaven(蓋天說) means that the sky is round and the ground falls Square(天圓地方). ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$ involve the Hypothesis of Covering Heaven by the fact that it divide heaven and earth by top and bottom. The Hypothesis of Armillary Sphere(蓋天說) is not directly appeared in ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$. But ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$ include the Hypothesis of Armillary Sphere by the astronomical observation and understand the universe with interior-exterior viewpoint. ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$ describe the circulation of the universe (周天度數) at 365 1/4 terms, the length of daytime and night of the vernal equinox and the autumnal equinox is same and use the The Twenty Eight Constellations by the ecliptic(黃道). It prove that ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$ observes the celestial body according to the Hypothesis of Armillary Sphere. The Hypothesis of Chaosheavens(宣夜說) appears most is the theory which lately. ${\ulcorner}$Hwangje-Naegyeong${\lrcorner}$ describe Tae Hue(太虛) infinite outer space and the earth is floating by Gi(氣). This with the Hypothesis of Chaosheavens is similar from like this point.

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Effects of the Support and Control of Franchisors on Franchisees' Satisfaction and Response Strategies (프랜차이즈 가맹본부의 지원, 통제가 가맹점사업자의 만족 및 반응전략에 미치는 영향)

  • Kwon, Yong-Deok;Yu, Jong-Pil
    • Journal of Distribution Science
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    • v.12 no.8
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    • pp.43-54
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    • 2014
  • Purpose - This study was based on a theoretical consideration of the structural relationship between the support and control of the franchisor and the satisfaction and strategic response (voice, loyalty, exit, neglect) of the franchisee. First, based on the preceding research, this study systematically organized the type of support and control of the franchisor. Second, the study examined the effects of a franchisor's support and control on the expectancy disconfirmation between affiliated franchisees' expectations before a franchise agreement and performance after operating an affiliated store. Third, the study looked into the effects of expectancy disconfirmation relating to a franchisor's support and control on an affiliated franchisees' general satisfaction. Fourth, this study examined the influence of the general satisfaction of a franchisee on affiliated franchisees' response strategies. Research design, data, and methodology - In this study, the population comprised the nation's franchisors, and the sample comprised franchisees conducting business in Seoul and Gyeonggi-do. A self-administered questionnaire was used; the author and examiner explained the study's parameters to the interviewees in advance, to lessen the rate of rejection of the answers and to maintain reliability. The author distributed 350 copies of the questionnaire and collected 327 copies (93.4%). The author removed 54 copies of the sample, as these copies belonged to franchisees that were not registered by the Fair Trade Commission and/or were thought to have either defects or inadequate answers. The author selected an effective sample of 273 copies to enter data and to do the statistical analysis. Results - Both a reliability analysis and a confirmatory factor analysis were performed to measure reliability and validity, and a structural equation model was used to conduct the hypothesis test and investigate the models. The hypothesis was tested (Table 5). The models had a suitable fit, for instance, χ2 = 447.663(df = 212, p = .000), χ2/df = 2.112, GFI = .881, AGFI = .858, RMR = .083, RMSEA = .067, NFI = .932, and CFI = .961. The hypothesis test results were as follows. Hypothesis 1 was accepted (C.R. = -2.339, p = .019). Hypothesis 2 was accepted (C.R. = 15.213, p = .000). Hypothesis 3 was accepted (C.R. = -2.631, p = .006). Hypothesis 4 was accepted (C.R. = 16.271, p = .000). Hypothesis 5 was accepted (C.R. = 2.391, p = .017). Hypothesis 6 was accepted (C.R. = 5.777, p = .000). Hypothesis 7 was accepted (C.R. = 17.153, p = .000). Hypothesis 8 was accepted (C.R. = 24.746, p = .000). Hypothesis 9 was accepted (C.R. = -10.150, p = .000). Hypothesis 10 was accepted (C.R. = -12.124, p = .000). Conclusions - The research results showed that expectations for a franchisor's support and control had a significant influence on expectation disconfirmation in a negative way, whereas the performance of support and control were found to have a significant influence on expectation disconfirmation in a positive way. In addition, the expectation disconfirmation of support and control was found to have a significant influence on satisfaction of franchisees in a positive way. Generally, regarding the research on control, control is found to have a negative influence on the satisfaction of franchisees, but this study proves that control is found to affect it in a positive way through conformity.

A Study on the Influence of Omni-Channel Brand Experience on Omni-Channel Brand Relationship Formation and Achievements (옴니채널 브랜드체험이 옴니채널 브랜드 관계형성 및 성과에 미치는 영향)

  • Ock, Jungwon;Yun, Daehong;Kang, Yeolwoo
    • Journal of Service Research and Studies
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    • v.8 no.3
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    • pp.97-114
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    • 2018
  • This study was intended to empirically examine the influence that the omni-channel brand experience would have on omni-channel brand relationship formation and achievements. All hypotheses were adopted, except for 1 hypothesis(Hypothesis 5), among 12 hypotheses. Specific results were as below: First, omni-channel brand experience had a positive(+) influence on brand trust(Hypothesis 1), brand identification(Hypothesis 2), and consumer-brand relationship(Hypothesis 3) as a whole. The brand trust had a positive(+) influence on brand identification(Hypothesis 4), but did not have statistically significant influence on consumer-brand relationship(Hypothesis 5). Meanwhile, brand identification had a positive(+) influence on consumer-brand relationship(Hypothesis 6). Second, consumer-brand relationship had a positive(+) influence on re-purchase intention(Hypothesis 7), word-of-mouth intention(Hypothesis 8), and brand extension acceptability(Hypothesis 9) as a whole. Finally, omni-channel brand showed the following relationship with and achievements. re-purchase intention had a positive(+) influence on both word-of-mouth intention(Hypothesis 10) and brand extension acceptability(Hypothesis 11) while word-of-mouth intention had a positive(+) influence on brand extension acceptability. The results of this study may provide theoretical and practical implications for marketing managers' understanding and strategy planning in connection with consumer experience and relationship formation promoted recently by omni-channel brands of distribution companies.

Elementary and Middle School Students' Understanding of Observation, Prediction, and Hypothesis ($\cdot$중학생의 관찰, 예상, 가설의 이해)

  • Lee Hye-Won;Yang Il-Ho;Cho Hyun-Jun
    • Journal of Korean Elementary Science Education
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    • v.24 no.3
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    • pp.236-241
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    • 2005
  • The purpose of this study was to investigate the elementary and middle school students' understanding of observation, prediction, and hypothesis in everyday and science educational contexts. The questionnaires for testing understanding of three categories were developed, which obtained Cronbach alpha .91. It was consisted of 40 questions of 10 items related to observation, prediction, and hypothesis. Thy test was administrated to 868 subjects from grade 3 to grade 9. The results showed that the each level of their understanding of observation, prediction, and hypothesis ranged between $29{\~}58\%$, $43{\~}53\%$, and $10{\~}25\%$. The level of understanding of observation and prediction showed tendency to promote increasingly from grade 3 to grade 9, but the level of hypothesis did not.

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Multi-Hypothesis Error Concealment Algorithm for H.26L Video (H.26L을 위한 다차원 에러 은닉 기법)

  • 박영오;김창수;이상욱
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.28 no.11C
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    • pp.1130-1139
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    • 2003
  • In this work, we propose a multi-hypothesis error concealment algorithm, which replaces a lost block with a weighted superposition of more than two reference blocks in previous frames. Three methods are developed to find the set of reference blocks and determine the weighting coefficients. These methods are implemented based on H.26L standard, and their performances are evaluated. It is shown that the proposed multi-hypothesis algorithm provides up to 1.5㏈ better PSNR performance than the conventional single-hypothesis concealment algorithm.

The Effect of Organizational Culture on Innovation Activities and Organizational Effectiveness

  • Kim, Moon Jun
    • International Journal of Advanced Culture Technology
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    • v.10 no.3
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    • pp.93-103
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    • 2022
  • The purpose of this study is to empirically analyze the mediating effect of innovation activities on the effect of organizational culture perceived by organizational members on organizational effectiveness. The main results are as follows. First, Hypothesis 1, organizational culture, was adopted as it showed a positive influence on innovation activities. Second, since organizational culture showed statistically significant effect on organizational effectiveness, Hypothesis 2 was adopted. Third, the innovation activity, which is hypothesis 3, was analyzed to have a positive influence on organizational effectiveness. Therefore, hypothesis 3 was accepted. Fourth, the innovation activity, hypothesis 4, showed a mediating effect between organizational culture and organizational effectiveness. As shown in the results of this study, it is indicated that organizations should improve organizational effectiveness for growth and development through the advancement of the sustainability management system in the rapidly changing business environment. To this end, it was necessary to systematically build and activate an organizational culture and innovation activities suitable for the characteristics of the organization. In other words, organizational effectiveness can be improved when constructing and implementing advanced innovation activities based on measures to revitalize organizational culture according to changes in the business environment.

Analysis of Variation in Pupil Size of Elementary Students on the Types of Generating Scientific Hypothesis (과학적 가설 생성 유형에 따른 초등학생의 동공크기 변화 분석)

  • Choi, Sungkyun;Shin, Donghoon
    • Journal of The Korean Association For Science Education
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    • v.37 no.3
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    • pp.483-492
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    • 2017
  • The purpose of this study is to analyze the variation in pupil size as shown in the scientific hypothesis generation process of students in Elementary School. The subjects for research consisted of 20 fifth-year students at Seoul B elementary school who agreed to participate in the research. The task consisted of four scientific hypothesis-generating tasks. SMI's Eye Tracker(iView $X^{TM}$ RED) was used to collect eye movement data. Experiment 3.6 and BeGaze 3.6 softwares were used to plan experiment and analyzed the task performance process and eye movement data. The findings of this study are twofold. First, there were four types that generate hypothesis about the tasks. Second, in the moment of generating hypothesis, participants' pupils have grown bigger. And while thinking of generating hypothesis or elaborating hypothesis, there were no big changes. These results show the moment of generating hypothesis is affected by emotional factors besides cognitive factors.