• Title/Summary/Keyword: Multiple hypothesis

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A Difference of Identifying Variable Skills Assessment between Performance and Multiple Choice Items (수행평가와 선다형 지필 평가에 의한 변인확인 능력 평가의 차이)

  • Lee, Hang-Ro
    • Journal of The Korean Association For Science Education
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    • v.19 no.1
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    • pp.146-158
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    • 1999
  • Since 1960' s. aims of science education have changed from attainment of scientific concepts. principles and laws to improvement of science process(or inquiry) skills. According to the science education philosophy like this. our nation has adopted improvement and evaluation of science process(or inquiry) skills in science education. The purpose of this study was to examine the performance of high school students on 4 types of multiple choice items used to access students ability to identify independent and dependent variables. Stimulus materials were either a question focusing on the relationship between two variables. a hypothesis. a description of an experiment. or a description of results of an experiment. Student performance on these item types was compared to this performance on a standard Piagetian interview task of variable identification. The results of the study included: (1) the "hypothesis" type was the most difficult, while the "question" type appeared to be the easiest; (2) the "procedure" item type had a higher correlation with the total interview than any other item type. Among conclusions reached in this study was that although all four item types operated similarly. they did not correlate very highly with the performance assessment by interview.

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A Study for Investigating of Predictors of Compliance for Preventive Health Behavior. -centered on early detection of cervical cancer- (예방적 건강행위 이행의 예측인자 발견을 위한 연구-자궁암 조기발견을 중심으로-)

  • 이종경
    • Journal of Korean Academy of Nursing
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    • v.12 no.1
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    • pp.25-38
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    • 1982
  • As technological civilization and medical science has developed, standards of living have imp-roved and human life expectancy has been extended. But the incidence and mortality rate of cancer have been gradually increasing due to the pollution of the environment. Even though cancer is still a great threat to human beings, the etiology and appropriate cure forcancerhavenotyetbeendiscovered. The early detection and treatment of cancer is urgently needed. This study concentrates on the health behavior of woman regarding the papanicolau smear for early detection of cervical cancer. It was done in order to provide a direction for scientific health education materials by investigating predictors of preventive health behavior. The subjects for this study were made up of 54 woman, who comply with preventive health practices(compliant) who attended the Cervical Cancer Center of Y University Hospital in order to have tests for early detection of cervical cancer and 54 woman who did not comply with preventive health practices (noncompliant) selected from 100 housewives of I apartment, Kang Nam Ku, Seoul. The study method used, was a questionnaire for the compliance group and an interview for the noncompliance group. The period for data collection was from October 13th to October 24th. 1981. Analysis of the data was done using percentages, T-test, Pearson Correlation and Stepwise Multiple Regression. The results of study were as follows: 1. The hypotheses tested were based on the health belief model; 1) The first hypothesis,“The compliant may have more knowledge of the cervical cancer than the noncompliant”was rejected(T=-1.86, p>.05) 2) The second hypothesis,“The compliant may have a higher severity of cervical cancer than the noncompliant”was accepted (T=5.41, p<.001) 3) The third hypothesis, “The compliant may have a higher susceptability to cervical cancer than the noncompliant”was accepted(T=3.51, p<.01). 4) The fourth hypothesis,“The compliant may have more beneHt than cost'from the cervical cancer tests than the noncompliant" was accepted(T=7.46, p<.001). 5) The fifth hypothesis,“The compliant may have more health concern than the noncompliant”. was accepted(T=3.39, p<.01). These results show that severity, susceptability, benefit(over cost) and health concern influence the preventive health behavior in this Study. 2. In the correlation among variables, it was found that the knowledge of cervical cancer and the benefit(over cost) of preventive health behavior were negatively correlated(r=-2.75, p<.01), Severity of cervical cancer and benefit (over cost) of preventive health behavior were positively correlated(r=.280, p<.01), severity and susceptability of cervical cancer were positively correlated(r= .238, p<.01), benefit(over cost) and health concern were positively correlated(r= .299, p<.01). The benefit(over cost) may be raised by increasing the severity and health concern. Therefore the compliance rate of woman may be raised through health education by increasing the benefit(over cost) of the individual. 3. The Stepwise Multiple Regression between health behavior and predictors. 1) The factor“Benefit(over cost)”could account for preventive health behavior in 34.4% of the sample(F=55.6204 P<.01). 2) When the factor“Severity”is added to this, it accounts for 44.3% of preventive health behavior(F=41.679, p<.01). 3) When the factor“Susceptability”is also included, it accounts for 46.7% of preventive health behavior(F=30.373, p<.01). 4) When the factor “Health concern”is included, it accounts for 48.1% of preventive health behavior(F=23859, p<.05). This means that other factors appear to influence preventive health behavior, since the combination of variables explains only 48.1% of the Preventive health behavior. Therefore further study to investigate the predictors of preventive health behavior is necessary.

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Influence of the Education Service Quality and Result Expectations on Behavioral Intention: Focus on the TOEIC Business of a Global Company (교육서비스 품질과 교육성과의 기대일치여부가 행동의도에 미치는 영향: 글로벌기업의 TOEIC사업을 중심으로)

  • Kang, Ho-Gye;Song, In-Am;Hwang, Hee-Joong
    • Journal of Distribution Science
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    • v.11 no.2
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    • pp.71-81
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    • 2013
  • Purpose - The TOEIC test has been leading the change in the quality and the globalization of companies for about last 30 years. The TOEIC test is taken by about two million people each year and is used as a criterion to select new employees in companies or government offices, for performance ratings, and for overseas posting selections. Universities also use TOEIC test in various ways. Since the TOEIC test is used for the selection of new students for admission, transferring extra credits, scholarships, graduation certification, and admission of international students studying abroad, many universities all over the country provide students with TOEIC study lectures through their own language institutes. Despite the fact, there has been no research on the service quality or even the current situation of these institutes. Thus, this study aims to evaluate the factors that impact TOEIC lecture service quality and analyzes the effect of the expectation related to the education service quality and the result of education on intentional behavior. Research design, data, methodology - Data was collected by administering a survey to current TOEIC students from different university language institutes. The survey questionnaire comprised of a five-point Likert scale. The demographic analysis was conducted using the frequency analysis method and the factor analysis was conducted to verify the validity of questionnaire over any variable. The reliability analysis was conducted to verify the reliability of the results. Besides, multiple regression analysis, regression analysis, and mediated effect verification were also conducted. For education service quality, four different independent variables such as reliability, response, conviction, and sympathy were considered using the SERVQUAL survey model. Based on the research models, the study hypotheses below were formulated in order to recognize an effect relationship between the variables. The four hypotheses are, "the hypothesis on education service quality and TOEIC study result expectation," "the hypothesis on education service quality and behavioral intention," "the hypothesis on study result expectation and behavioral intention," and "the hypothesis on study result expectation and mediated effect." Results - The results are as follows. First, the factors like response, conviction, and sympathy have a positive influence on TOEIC study result expectations. Second, the TOEIC study result expectation has a positive influence on the factors of behavioral intention such as re-sign up, positive word-of-mouth, "loyalty towards school." Third, it was verified that the mediated effect on behavioral intention was influenced by education service quality at university foreign language institute, while the study result expectation has only a partial mediated effect. Conclusions - The implications of this study are summarized as follows: First, it suggests a new research model for the effect of the expectation related to the education service quality and the result of education in the university language institutes on the behavioral intention. Second, it has established a relationship between the education service quality and study result expectation by verifying the mediated effect on them.

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A Study on the Effect of Coffee Shop Service Quality on Perceived Value and Behavioral Intention - Focusing on Busan-Area College Students - (커피전문점 서비스품질이 지각된 가치와 행동의도에 미치는 영향에 관한 연구 - 부산지역 대학생을 중심으로 -)

  • Lee, Jong-Ho
    • Culinary science and hospitality research
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    • v.19 no.3
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    • pp.218-233
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    • 2013
  • This study used SPSSS 18.0 on 237 university students in Busan for frequency, factorial and reliability, correlation, and regression analyses to determine the effect relationship of coffee shop service quality on perceived value and behavioral intention. Multiple regression analysis for hypothesis testing showed that among the four service quality factors, confidence in employees and primary coffee quality had a non-significant effect on esthetic value, while menu characteristics besides coffee (${\beta}$=.293, p<.001) and physical environment (${\beta}$=.293, p<.001) were analyzed to be significant, partially supporting the study hypothesis. Regarding the effect of service quality on practical value, confidence in employees (${\beta}$=.264 p<.001), primary coffee quality (${\beta}$=.463, p<.001), menu characteristics besides coffee (${\beta}$=.139, p<.05) and physical environment (${\beta}$=.110, p<.05) were all significantly analyzed, supporting the study hypothesis. Regarding the effect of service quality on behavioral intention, confidence in employees (${\beta}$=.262 p<.001), primary coffee quality (${\beta}$=.411, p<.001), menu characteristics besides coffee (${\beta}$=.157, p<.01) and physical environment (${\beta}$=.137, p<.05) were all significantly analyzed, supporting the study hypothesis. In addition, regarding the effect of perceived value on behavioral intention, esthetic value (${\beta}$=.265, p<.001) and practical value (${\beta}$=.536, p<.001) were both significantly analyzed, showing a causal relationship with behavioral intention.

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A Study on the Impacts of Shipping Service Firm's Perceived Relational Benefits on Switching Barriers and Customer Loyalty -Focusing on Tug Boat Service- (해운기업의 지각된 관계 혜택과 전환장벽 및 고객 충성도의 관계에 관한 실증연구 -예인서비스를 중심으로-)

  • Kim, Ikseong;Kim, Hyundeok
    • Journal of Korea Port Economic Association
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    • v.37 no.4
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    • pp.89-102
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    • 2021
  • The purpose of this paper is to study the impact of shipping service firm's perceived relational benefits on switching barriers and loyalty focusing on tug boat service. To achieve the purpose of the research, literature survey on existing literature, thesis, research report is performed and also reliability analysis, validity test and multiple regression analysis using SPSSWIN 18.0 is used in this research. To verify a research model and hypothesis, a questionnaire survey among employees of shipping companies and shipping agencies was executed. 76 copies of total 200 copies of questionnaires were collected and the number of questionnaire used for empirical analysis was 76 copies. The main results of the study are summarized as below. First, Hypothesis 1 "shipping service firm's perceived relational benefits has a positive impact on the switching barrier" was supported by this study. Second, Hypothesis 2 "shipping service firm's perceived relational benefits has a positive impact on the loyalty" was supported in this research. Finally, Hypothesis 3 "switching barrier has a positive impact on the customer's loyalty" was also supported. Further research can be extended by adding more questionnaires including more shipping service firms all over the nation.

A study on preferable contents depending on regions and terminal types for high speed mobile internet (초고속 무선인터넷에서 폰형과 모뎀형 단말기의 이용장소에 따르는 선호 콘텐츠에 관한 연구)

  • Ryu, Gui-Yeol
    • Journal of the Korean Data and Information Science Society
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    • v.22 no.4
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    • pp.701-715
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    • 2011
  • The object of study is what kinds of contents are preferable depending on regions and terminal types for high speed mobile internet. We consider 10 contents, 9 region2, and 2 terminal types. The methods are the adjusted residuals, the corresponding analysis, and the multiple corresponding analysis. The results are different, which comes from different mathematical models. 50% of results are same between the corresponding analysis and the multiple corresponding analysis. 26.3% are same between the adjusted residuals and the corresponding analysis. 21.1% are same between the adjusted residuals and the multiple corresponding analysis. We recommend the adjusted residuals because it can test hypothesis for preferring contents. The content which is not chosen by three methods is business.

Multiple Moving Person Tracking based on the IMPRESARIO Simulator

  • Kim, Hyun-Deok;Jin, Tae-Seok
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2008.05a
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    • pp.877-881
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    • 2008
  • In this paper, we propose a real-time people tracking system with multiple CCD cameras for security inside the building. The camera is mounted from the ceiling of the laboratory so that the image data of the passing people are fully overlapped. The implemented system recognizes people movement along various directions. To track people even when their images are partially overlapped, the proposed system estimates and tracks a bounding box enclosing each person in the tracking region. The approximated convex hull of each individual in the tracking area is obtained to provide more accurate tracking information. To achieve this goal, we propose a method for 3D walking human tracking based on the IMPRESARIO framework incorporating cascaded classifiers into hypothesis evaluation. The efficiency of adaptive selection of cascaded classifiers have been also presented. We have shown the improvement of reliability for likelihood calculation by using cascaded classifiers. Experimental results show that the proposed method can smoothly and effectively detect and track walking humans through environments such as dense forests.

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Traffic Accident Model of Urban Rotary and Roundabout by Type of Collision based on Land Use (토지이용에 따른 충돌 유형별 도시부 로터리 및 회전교차로 사고모형)

  • Lee, Min Yeong;Kim, Tae Yang;Park, Byung Ho
    • Journal of the Korean Society of Safety
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    • v.32 no.4
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    • pp.107-113
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    • 2017
  • This paper deals with the traffic factors related to the collisions of circular intersections. The purpose of this study is to develop traffic accident models by type of collision based on land use. In pursuing the above, the traffic accident data from 2010 to 2014 were collected from the "Traffic Accident Analysis System (TAAS)" data set of the Road Traffic Authority. A multiple regression model was utilized in this study to develop the traffic accident models by type of collision. 17 explanatory variables such as geometry and traffic volume factors were used. The main results are as follows. First, the null hypothesis that the type of land use does not affect the number of accidents by type of collision is rejected. Second, 10 accident models by type of collision based on land use are developed, which are all statistically significant. Finally, the ADT, inscribed circle diameter, bicycle lane, area of central island, number of speed hump, circulatory roadway width, splitter island, area of circulatory roadway, mean number of entry lane and mean width of entry lane are analyzed to see how they affect accident by type of accident based on land use.

The Effect of College Sport Club Participants Ego-Resilience on College Adjustment

  • CHOI, Jae Hoon;LEE, Dong Gun;MOON, Hwang Woon
    • Journal of Sport and Applied Science
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    • v.4 no.3
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    • pp.11-22
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    • 2020
  • Purpose: The purpose of this study is to analyze the effect of college sport club participants' ego-resilience on the college adjustment. Research design, data, and methodology: To accomplish the purpose, 360 participants were sampled by means stratified cluster random sampling method. Only 317 questionnaires were statistically processed, while 43 questionnaires were excluded because their respondents failed to complete instrument and judged insincere in filling out questionnaire. To analyze the data collected, statistical techniques, such as descriptive statistics, reliability analysis, independent-sample t-test, and one-way ANOVA, multiple regression analysis were used, and as for difference verification between individual groups in relation to significant results, Duncan's multiple range was conducted. Results: The following results have been drawn out via hypothesis test. First. the background variable of the college sport club participants of was proved to affect the degree of their ego-resilience on the college adjustment. Specifically, their period of participation, frequency of participation and expenses made a statistically meaningful. Second, the college sport club participants of ego-resilience were proved to affect the college adjustment. Academic adjustment, social adjustment, personal-emotional adjustment and institutional attachment made a statistically meaning-full difference. Conclusions: The findings indicate the function of sport club participants' ego-resilience in assisting their adjustment.

Effect of Walking-Environment Factor on Pedestrian Safety (보행환경요인이 보행안전에 미치는 영향분석)

  • Lee, Su-Min;Hwang, Gi-Yeon
    • Journal of Korean Society of Transportation
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    • v.27 no.1
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    • pp.107-114
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    • 2009
  • Human walking is essential and important mean of transportation. Pedestrian safety is recently important because accidents often happen while walking. This research is showing that Walking-environmental factors have effect on safety while walking. At first, exact 15 factors and conduct survey in the preceding research. After that, exact 4 important factors through factor analysis. At result of Multiple regression analysis, null hypothesis has proved to be true by satisfying therms which is F-value 9.211 and P-value 0.000. and come to the conclusion that walking-environmental factors influence pedestrian safety. 4 important factors can be listed by below. Pedestrian-road characteristic, landscape characteristic, commercial characteristic, walking characteristics by following influence. Especially, landscape characteristic and pedestrian-road characteristic can be vital factors.