• Title/Summary/Keyword: Cluster validity

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Scale Development and Validation to Measure Occupational Health Literacy Among Thai Informal Workers

  • Suthakorn, Weeraporn;Songkham, Wanpen;Tantranont, Kunlayanee;Srisuphan, Wichit;Sakarinkhul, Pokin;Dhatsuwan, Jakkapob
    • Safety and Health at Work
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    • v.11 no.4
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    • pp.526-532
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    • 2020
  • Background: The high incidence of work-related diseases and injuries among day-laborers and workers with no legal contracts (informal workers) has received the attention of the Thai authorities. Workers' low occupational health literacy (OHL) has been reasoned as one contributing factor. Absence of a valid tool has prevented assessment of informal workers' OHL. The aim of this study was to create a valid and reliable Occupational Health Literacy Scale within the context of Thai working culture (TOHLS-IF). Methods: This study used the mixed method approach to develop TOHLS-IF. Questions were generated using in-depth interviews and an extensive review of the literature. Experts' assessment confirmed the content validity of TOHLS-IF. The scales of its psychometric properties were assessed in a sample of 400 informal workers using cluster random sampling. Results: The final version of the TOHLS-IF comprises 38 items within 4 dimensions: Ability to Gain Access, Understanding, Evaluation, and Use of occupational health and safety information. Factor analysis identified items explaining 50.22% of the total variance. The final confirmatory analysis confirmed the model estimates were satisfactory for the construct. TOHLS-IF demonstrated a high internal consistency and satisfactory reliability (Cronbach's alpha = .98). Conclusion: The TOHLS-IF is a valid and reliable instrument to assess informal workers' OHL. The structural dimensions of this instrument are based on the concept of health literacy and Thai culture. Thai health professionals are encouraged to benefit from this instrument to assess their workers' OHL and apply findings as guidelines for effective occupational health and safety interventions.

A study of Cluster Tool Scheduler Algorithm which is Support Various Transfer Patterns and Improved Productivity (반도체 생산 성능 향상 및 다양한 이송패턴을 수행할 수 있는 범용 스케줄러 알고리즘에 관한 연구)

  • Song, Min-Gi;Jung, Chan-Ho;Chi, Sung-Do
    • Journal of the Korea Society for Simulation
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    • v.19 no.4
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    • pp.99-109
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    • 2010
  • Existing research about automated wafer transport management strategy for semiconductor manufacturing equipment was mainly focused on dispatching rules which is optimized to specific system layout, process environment or transfer patterns. But these methods can cause problem as like requiring additional rules or changing whole transport management strategy when applied to new type of process or system. In addition, a lack of consideration for interconnectedness of the added rules can cause unexpected deadlock. In this study, in order to improve these problems, propose dynamic priority based transfer job decision making algorithm which is applicable with regardless of system lay out and transfer patterns. Also, extra rule handling part proposed to support special transfer requirement which is available without damage to generality for maintaining a consistent scheduling policies and minimize loss of stability due to expansion and lead to improve productivity at the same time. Simulation environment of Twin-slot type semiconductor equipment was built In order to measure performance and examine validity about proposed wafer scheduling algorithm.

The Proposal Method of ARINC-429 Linkage for Efficient Operation of Tactical Stations in P-3C Maritime Patrol Aircraft (P-3C 해상초계기용 전술컴퓨터의 효율적 운영을 위한 ARINC-429 연동 방법)

  • Byoung-Kug Kim;Yong-Hoon Cha
    • Journal of Advanced Navigation Technology
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    • v.27 no.2
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    • pp.167-172
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    • 2023
  • The P-3C maritime patrol aircraft operated by the Republic of Korea Navy is equipped with various sensor devices (LRUs, line replace units) for tactical data collection. Depending on the characteristics of the sensor device, it operates with various communication protocols such as IEEE 802.3, MIL-STD-1553A/B, and ARINC-429. In addition, the collected tactical data is processed in the tactical station for mission operators, and this tactical station constitutes a clustering network on Gigabit Ethernet and operates in a distributed processing method. For communication with the sensor device, a specific tactical station mounts a peripheral device (eg. ARINC-429 interface card). The problem is that the performance of the entire distributed processing according to the peripheral device control and communication relay of this specific device is degraded, and even the operation stop of the tactical station has a problem of disconnecting the communication with the related sensor device. In this paper, we propose a method to mount a separate gateway to solve this problem, and the validity of the proposed application is demonstrated through the operation result of this gateway.

The effect of social network sports community consciousness on sports attitude

  • Eunjung Tak;Jungyeol Lim
    • International Journal of Advanced Culture Technology
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    • v.11 no.4
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    • pp.223-232
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    • 2023
  • The purpose of this study is to determine the impact of social network sports community consciousness on loyalty and sports attitude. In order to achieve this research purpose, the population of the study was selected as adult men and women over the age of 20 who are active in the social network sports community in 2022. The sampling method used cluster random sampling to select a total of 300 people, 150 men and 150 women, as research subjects. The survey tool used was the questionnaire method, and the questionnaire whose reliability and validity had been verified in previous studies at home and abroad was used by requoting, modifying, or supplementing it to suit the purpose of this study. It was also structured on a 5-point scale. Frequency analysis, factor analysis, reliability analysis, simple regression analysis, and multiple regression analysis were performed on the collected data using the statistical program SPSS Windows 20.0 Version. The results obtained through this process are as follows. First, social network sports community consciousness was found to have a partial effect on loyalty. Second, social network sports community consciousness was found to have a partial effect on sports attitudes. Third, social network sports community loyalty was found to have a partial effect on sports attitudes. Considering these results, various activities such as decision-making process, relationship formation, and opinion expression of modern people are carried out by the O-line community. In addition, while in the past it was a format that led from offline activities to online activities, currently, there are more and more formats that lead from online activities to offline activities. Therefore, modern people's SNS sports community activities provide many experiences, which creates a sense of community and sports attitudes are formed based on this. This can be said to lead to loyal activities.

Effect of motivation to participate in horseback riding on emotional style and subjective well-being

  • Qimeng Zhang;Sunmun Park
    • International Journal of Advanced Culture Technology
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    • v.11 no.4
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    • pp.233-243
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    • 2023
  • The purpose of this study is to determine the effect of horseback riding participation motivation on emotional style and subjective well-being. In order to achieve this research objective, adults aged 20 or older participating in equestrian clubs in Seoul, Jeolla-do, and Gyeonggi regions in 2022 were selected as the population. The sampling method used cluster random sampling, and a total of 250 people, 180 males and 120 females, were sampled. The survey tool was modified and supplemented for this study based on a questionnaire whose reliability and validity were verified in previous studies, and all questionnaire questions were structured on a 5-point scale. For data analysis, SPSS Windows 21.0 Version was used to perform statistical processing according to the purpose of analysis. The conclusions obtained in this study through data analysis according to these methods and procedures are as follows. First, the motivation to participate in horseback riding was found to partially affect emotional style. Second, the motivation to participate in horseback riding was found to partially affect subjective well-being. Third, the emotional style of horseback riding participants was found to partially affect subjective well-being. Considering these results, it is possible to satisfy various desires in modern people's lives through leisure sports activities such as horseback riding, which allows them to communicate with nature and living things. In other words, internal motivation factors such as social relationships, satisfaction of needs, and professional development through leisure sports activities are positively or negatively related to emotional regulation, and this has a close impact on satisfaction with one's life and happiness.

The study on the social network service quality of companies in Mobile Environment -focusing on the difference of recognition depending on the level of commitment and loyalty- (모바일 환경에서 기업의 소셜네트워크 서비스 품질에 관한 연구 -몰입 및 충성도에 따른 집단간 인식차이를 중심으로-)

  • Kim, Sang-Hyuck;Yang, Jae-Hoon
    • International Commerce and Information Review
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    • v.14 no.3
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    • pp.539-558
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    • 2012
  • The purpose of this study is examining the differences of mobile SNS's service quality, which consists data quality and system quality, among the groups that are classified by commitment and customer loyalty. For the experimental analysis, the frequency analysis was performed for general characteristics of sample. The variables were selected by factor analysis that also prove the validity of variables. The value of Cronbach's alpha was calculated to check the reliability of variables. In addition, the group was determined by the both hierarchical and hierarchical cluster analysis, then ANOVA was performed to test the hypotheses that there are differences of mobile SNS's service quality, among the groups that are classified by commitment and customer loyalty. The results of this study support that there are differences among the groups toward mobile SNS's service quality and also shows the more commitment and loyalty group is the higher recognition of mobile SNS's service quality. Thus, the companies have to realize that mobile SNS is very important key factor to success in rapidly changing business environment. In conclusion, the companies implement different customized strategy for the different group and develop the contents and the applications to maximize the commitment and loyalty of for the mobile SNS users.

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Effect of Exercise Behavior Change of Casino Securities on Their Self-efficacy (카지노 시큐리티 종사자의 운동행동 변화과정이 자기효능감에 미치는 효과)

  • Chun, Yong-Tae
    • The Journal of the Korea Contents Association
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    • v.9 no.8
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    • pp.285-293
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    • 2009
  • The purpose of this study is to closely examine the effect of exercise behavior change of casino securities on their Self-efficacy. This observation takes place in casino enterprises in the whole country. Within these areas, we set the selected employees as the targeted sampling unit, we extracted the specimen, using the stratified cluster random sampling with the quota sampling, putting a weigh on the specimen of focused areas. Among 420 persons sampling unit, we have excluded 47 copied which seem to be insincere, and actually used 373 copies in this study. Evaluation forms are used as a study method; each form consists of continuance 5 points Likert scales and nominal/proportional scaling and used after excluding a test through the analysis of validity and reliability. After encoding and inputting the framing completed data along with each purpose, it was computerized by computer process, making use of SPSS 15.0 version. Through the data analysis according to these methods and procedures, the result on this study is described below. First, the exercise behavior change process the self-efficacy according to socio-demographic characteristics make a difference. Second, the self-efficacy according to socio-demographic characteristics make a difference. Third, the exercise behavior change process influence on the self-efficacy.

Quantitative Evaluations for Impressions of Landscape and Soundscape about Traditional Area in Asan City (아산시의 전통적인 지역에 대한 경관과 소리경관의 정량적 인상평가)

  • Yim, Dong-Kyun;Sugiyama, Kazuichi;Kim, Eung-Nam
    • The Journal of the Korea Contents Association
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    • v.16 no.5
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    • pp.520-532
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    • 2016
  • In this paper, we propose a novel method to analyze and quantitatively evaluate the impression of landscapes and soundscapes about traditional area of Chungnam Asan city in Korea. For this, we collated data about impression evaluation of Korean and Japanese students and, based on these result, we proved the validity and usefulness of the evaluation system that we proposed through this study. The research process conducted in this study as follows: first of all, we had selected five traditional places of interest in Asan City, and investigated various conditional elements of the area including soundscapes which is forming the landscape using video camera. And we made both Korean and Japanese students evaluate the impression for these videotaped landscape data through using the SD(semantic differential) method. And then, we quantified these qualitative data through applying the quantification theory and cluster analysis method to them. Though this process, we could obtain both data as a result derived by classifying each sample and categorizing levels of those impression evaluation. Because of totally difference between those two analyzing processes, which one is for sample classification and the other is for determining impression level, we could validate the usefulness of our evaluation system through conducting comparative analysis of results from both methods. Analysis showed that our novel evaluation system for landscape is effective and, in most part of the traditional landscape, Japanese students' responses are different far from the Korean students' responses.

Development of an Analytical Framework for Dialogic Argumentation in the Context of Socioscientific Issues: Based on Discourse Clusters and Schemes (과학관련 사회쟁점(SSI) 맥락에서의 소집단 논증활동 분석틀 개발: 담화클러스터와 담화요소의 분석)

  • Ko, Yeonjoo;Choi, Yunhee;Lee, Hyunju
    • Journal of The Korean Association For Science Education
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    • v.35 no.3
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    • pp.509-521
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    • 2015
  • Argumentation is a social and collaborative dialogic process. A large number of researchers have focused on analyzing the structure of students' argumentation occurring in the scientific inquiry context, using the Toulmin's model of argument. Since SSI dialogic argumentation often presents distinctive features (e.g. interdisciplinary, controversial, value-laden, etc.), Toulmin's model would not fit into the context. Therefore, we attempted to develop an analytical framework for SSI dialogic argumentation by addressing the concepts of 'discourse clusters' and 'discourse schemes.' Discourse clusters indicated a series of utterances created for a similar dialogical purpose in the SSI contexts. Discourse schemes denoted meaningful discourse units that well represented the features of SSI reasoning. In this study, we presented six types of discourse clusters and 19 discourse schemes. We applied the framework to the data of students' group discourse on SSIs (e.g. euthanasia, nuclear energy, etc.) in order to verify its validity and applicability. The results indicate that the framework well explained the overall flow, dynamics, and features of students' discourse on SSI.

Structural Equation Model for the Health Behaviors of University Nursing Students in Korea (간호대학생의 건강행위 예측모형)

  • Yi, Sung-Eun;Oh, Ka-Sil;Park, Young-Joo;Kim, Jeong-Ah;Kim, Hee-Soon;Oh, Kyoung-Ok;Lee, Sook-Ja;Jun, Hoa-Yun;Chung, Choo-Ja;Choi, Sang-Soon;Kang, Hyun-Chul
    • The Journal of Korean Academic Society of Nursing Education
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    • v.10 no.2
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    • pp.278-288
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    • 2004
  • Purpose: Structural equation model was analysed to explore the determinants of health behaviors of university nursing students in Korea. Study subjects: Four hundreds seventy eight university nursing students were selected by random cluster sampling from five universities located in the middle area of Korea. Data collection: The data were collected by questionnaires about demographic characteristics, stressful life events, perceived social support, perceived health status and health behaviors. Results: 1. Living with(out) family did not show direct effect on health behaviors. 2. Stressful life events and social support showed indirect effect on health behaviors via perceived health status; higher score of stressful life events predicted negative health behaviors. 3. The higher score of perceived health status predicted positive health behaviors. Recommendation: To improve the health behavior of nursing student, the program for positive perceived health status is necessary, which includes the social support and stressful life event control program. Each nursing school should be encouraged to develop the program for increasing positive perceived health status. It would be more effective to develop health program separately according to the demographic or social characteristics of the students. And following studies could be suggested to identify and promote the validity and reliability of perceived health status and health behaviors measurements.

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