• Title/Summary/Keyword: Causal structure

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Perceived Exercise Self-Efficacy and Exercise Benefits/Barriers of Korean Adults with Chronic Diseases (성인 만성질환자가 지각하는 운동 자기효능감과 운동 유익성 및 장애성에 관한 연구)

  • Shin, Yun-Hee;Jang, Hee-Jung
    • Journal of Korean Academy of Nursing
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    • v.30 no.4
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    • pp.869-879
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    • 2000
  • The purpose of this study was to assess the perceived exercise self-efficacy and exercise benefits/barriers of Korean adults with chronic diseases, and the relationship between the two variables. For the study, 249 Korean adults with chronic diseases with ages ranging from 18 to 79 years were recruited from hospitals or health centers in five Korean cities and surrounding rural areas. The research instruments were the scales that researchers psychometrically verified the Exercise Self-Efficacy Scale, developed by Bandura (1997), and the Exercise Benefits/ Barriers Scale, developed by Sechrist, Walker, and Pender(1987). Results of descriptive analysis showed that Korean adults with chronic diseases perceived relatively low exercise self-efficacy and relatively high exercise benefits/ barriers. Exercise self-efficacy was significantly correlated with gender, education, regular exercise, and exercise benefits/barriers was significantly correlated with gender, regular exercise. Pearson correlation coefficient showed the significant relationship between the two variables. Further researches, which are a study to evaluate a causal structure for Pender's Health Promotion Model and an intervention study to increase physical activity of chronic patients, are recommended.

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A Study on the Building Use Control of Seoul in District Units Plan (서울시 지구단위계획의 운용에 관한 연구)

  • Shim, Jae-Heon;Lee, Jae-Kook
    • Journal of The Korean Digital Architecture Interior Association
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    • v.4 no.2
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    • pp.26-34
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    • 2004
  • Our country did not illustrate and reverse by a city planning law department construction Buddhist priest's robe dual setup the urban setting to be regulated, it came. The city planning law as the high position system of space planning mainly provides the use and a size of the land, the construction law the detail contents of site undergarment concrete location and the form back is provided and of course, regarding the structure which relates with the designation of concrete building use in him and the immediacy back. These two laws are come by a trade name complement and a function sharing role in order for the affirmative development of the city to become accomplished, being used. To necessity of District unit plan the general causal government employee all it is sympathizing, it relates it goes to extremes and with the maintenance of endurance environment and many portion with charge Sikkim also the fact that it is the criticism which relativy is negative in duty of administrative origination is fact in the people. But realization of plan hazard the execution of the public section which stands will be important, it will reach and the public section execution plan of the autonomous nine dimension for must be prepared. The next research that the individual globe plan and development actual condition actual proof and the research which it analyzes system is necessary with base, sees the general operation evaluation of Seoul District unit plan.

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Gene Expression Analysis of Lung Injury in Rats Induced by Exposure to MMA-SS Welding Fume for 30 Days

  • Oh, Jung-Hwa;Park, Han-Jin;Heo, Sun-Hee;Yang, Mi-Jin;Yang, Young-Su;Song, Chang-Woo;Yoon, Seok-Joo
    • Molecular & Cellular Toxicology
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    • v.3 no.4
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    • pp.306-313
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    • 2007
  • The welding fume has been implicated as a causal agent in respiratory disease such as pneumoconiosis. The molecular mechanism by which welding fume induces toxicity in the lung is still unknown, but studies have focused on histological structure and indirect approach measuring the pulmonary damage markers. In the present study, gene expression profiles were analyzed in the lung of rats exposed by manual metal-arc stainless-steel (MMA-SS) welding fume for 30 days using Affymetrix GeneChip$^{(R)}$. Totally, 379 genes were identified as being either up- or down-regulated over 2-fold changes (P<0.01) in the lung of low- or high-dose group and were analyzed by using hierarchical clustering. We focused on genes involved in immune/inflammation responses were differentially regulated during lung injury induced by welding fume exposure. The information of these deregulated genes may contribute in elucidation of the inflammation mechanism during lung injury such as lung fibrosis.

A Study on the Internalization of Sensor Technology by Comparison of IT Leading Countries

  • Cho, JaeHyuk
    • Journal of Internet Computing and Services
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    • v.21 no.3
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    • pp.61-70
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    • 2020
  • The 4th Industrial Revolution is a revolutionary change through intelligence, big fusion and personalization, and the importance of sensor technology that is the basis of core technology is emerging. This study empirically analyzes the derivation of national strategy for R&D of sensor technology, and draws out the effect of technology internalization effort through strategic R&D activities on technical performance and further on national economy. The research and development results are calculated for each type of technology internalization, and the results of the research and development are verified to establish a structure that contributes to the national economic performance. As a national technology internalization strategy, considering its own R&D investment and joint research and development, we examine the impact of each factor on patents and GDP, focusing on causality and ripple effects. For causality analysis, Grandeur causality analysis shows that R&D investment and joint research and development in all countries have mutual causal relationship with GDP. The implications are as follows. First, it is necessary to establish the policy of national economic development through the internalization of technology and knowledge. Second, it is necessary to establish policies according to the type of knowledge internalization. Third, it will be necessary to create an ecosystem environment based on a virtuous relationship between knowledge internalization and national technology and economic development.

The effects of Sharing Bicycle Service Quality on Creating Shared Value and Use Intention in China (공유경제에서 서비스품질이 공유가치창출 및 지속이용의도에 미치는 영향에 관한 연구: 중국공유자전거를 중심으로)

  • Lee, Eunji;Cho, Chulho
    • Journal of Korean Society for Quality Management
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    • v.46 no.3
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    • pp.523-538
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    • 2018
  • Purpose: The purpose of this study was to propose useful suggestions by analyzing causal effect relationship between sharing bicycle service quality, customer satisfaction, CSV, and continuos use intention in China. Methods: The collected data through the survey were analyzed using structure equation model analysis. The measurement tools used for this study were divided into four dimensions such as service quality, customer satisfaction, creating shared value, and continuous use intention. Results: The results of this study are as follows; regarding the influence of sharing bicycle service quality dimension on customer satisfaction(reliability and response), it was found that customer satisfaction was not significant on economic value. but it was significant on social value. It was found that social value made statistically significant influence on use intention. Conclusion: Sharing bicycle industry needs to activity of response to customer, and paying attention to view of social value for the sharing economy in the future.

A Study on the Dimension of Quality Metrics for Information Systems Development and Success : An Application of Information Processing Theory

  • An, Joon M.
    • The Journal of Information Technology and Database
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    • v.3 no.2
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    • pp.97-118
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    • 1996
  • Information systems quality engineering is one of the most problematic areas in practice and research, and needs cooperative efforts between practice and theory [Glass, 1996]. A model for evaluating the quality of system development process and ensuing success is proposed based on information processing theory of project unit design. A nomological net among a set of quality variables is identified from prior research in the areas of organization science, software engineering, and management information systems. More specifically, system development success was modelled as a function of project complexity, system development modelling environment, user participation, project unit structure, resource availability, and the level of iterative nature of development methodology. Based on the model developed from the information processing theory of project unit design in organization science. appropriate quality metrics for each variable in the proposed model are matched. In this way, a framework of relevant systems development and success quality metrics for controlling systems development processes and ensuing success is proposed. The causal relationships among the constructs in the proposed model are proposed as future empirical research for academicians and as managerial tools for quality managers. The framework and propositions help quality manager to select more parsimonious quality metrics for controlling information systems development processes and project success in an integrated way. Also this model can be utilized for evaluating software quality assurance programmes, which are developed and marketed by many vendors.

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Various Pathogenic Pseudomonas Strains that Cause Brown Blotch Disease in Cultivated Mushrooms

  • Mu, Lin-Lin;Yun, Yeong-Bae;Park, Soo-Jin;Cha, Jae-Soon;Kim, Young-Kee
    • Journal of Applied Biological Chemistry
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    • v.58 no.4
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    • pp.349-354
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    • 2015
  • Brown blotch disease in cultivated mushrooms is caused by Pseudomonas tolaasii, which secretes a lipodepsipeptide, tolaasin. Tolaasin is a pore-forming toxin in the cell membranes, thus destroying the fruiting body structure of mushroom. In this study, we isolated pathogenic bacteria from mushrooms that had symptoms of brown blotch disease. In order to identify these bacteria, their 16S rRNA genes were sequenced and analyzed. Pathogenic bacteria identified as Pseudomonas species were thirty five and classified into five subgroups: P1 to P5. Each subgroup showed different metabolic profile measured by API 20NE kit. Fifty percent of the bacteria were identified as P. tolaasii (P1 subgroup). All five subgroups caused the formation of brown blotches on mushroom tissues and the optimum temperature was 25oC, indicating that they may be able to secrete causal factors, such as tolaasin and similar peptide toxins. These results show that there are at least five different pathogenic Pseudomonas species as blotch-causing bacteria and, therefore, strains from the P2 to P5 subgroups should be also considered and studied as pathogens in order to improve the quality and yield of mushroom production.

Edge Adaptive Hierarchical Interpolation for Lossless and Progressive Image Transmission

  • Biadgie, Yenewondim;Wee, Young-Chul;Choi, Jung-Ju
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.5 no.11
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    • pp.2068-2086
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    • 2011
  • Based on the quincunx sub-sampling grid, the New Interleaved Hierarchical INTerpolation (NIHINT) method is recognized as a superior pyramid data structure for the lossless and progressive coding of natural images. In this paper, we propose a new image interpolation algorithm, Edge Adaptive Hierarchical INTerpolation (EAHINT), for a further reduction in the entropy of interpolation errors. We compute the local variance of the causal context to model the strength of a local edge around a target pixel and then apply three statistical decision rules to classify the local edge into a strong edge, a weak edge, or a medium edge. According to these local edge types, we apply an interpolation method to the target pixel using a one-directional interpolator for a strong edge, a multi-directional adaptive weighting interpolator for a medium edge, or a non-directional static weighting linear interpolator for a weak edge. Experimental results show that the proposed algorithm achieves a better compression bit rate than the NIHINT method for lossless image coding. It is shown that the compression bit rate is much better for images that are rich in directional edges and textures. Our algorithm also shows better rate-distortion performance and visual quality for progressive image transmission.

Oomycetes RXLR Effectors Function as Both Activator and Suppressor of Plant Immunity

  • Oh, Sang-Keun;Kamoun, Sophien;Choi, Doil
    • The Plant Pathology Journal
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    • v.26 no.3
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    • pp.209-215
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    • 2010
  • Plant pathogenic oomycetes, such as Phytophthora spp., are the causal agent of the most devastating plant diseases. During infection, these pathogens accomplish parasitic colonization of plants by modulating host defenses through an array of disease effector proteins. These effectors are classified in two classes based on their target sites in the host plant. Apoplastic effectors are secreted into the plant extracellular space, and cytoplasmic effectors are translocated inside the plant cell, through the haustoria that enter inside living host cell. Recent characterization of some oomycete Avr genes showed that they encode effector protein with general modular structure including N-terminal conserved RXLR-DEER motif. More detailed evidences suggest that these AVR effectors are secreted by the pathogenic oomycetes and then translocated into the host plant cell during infection. Recent findings indicated that one of the P. infestans effector, Avrblb2, specifically induces hypersensitive response (HR) in the presence of Solanum bulbocastanum late blight resistance genes Rpi-blb2. On the other hand, another secreted RXLR protein PexRD8 originated from P. infestans suppressed the HCD triggered by the elicitin INF1. In this review, we described recent progress in characterized RXLR effectors in Phytophthora spp. and their dual functions as modulators of host plant immunity.

The Meaning of Illness among Korean Americans with Chronic Hepatitis B (미주 한인 만성 B형 간염 환자의 질병의 의미)

  • Yang, Jin-Hyang;Lee, Hae-Ok;Cho, Myung-Ok
    • Journal of Korean Academy of Nursing
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    • v.40 no.5
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    • pp.662-675
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    • 2010
  • Purpose: This ethnography was done to explore the meaning of illness in Korean Americans with chronic hepatitis B. Methods: The participants were 6 patients with chronic hepatitis B and 6 general informants who could provide relevant data. Data were collected from iterative fieldwork with ethnographic interviews within Korean communities in two cities in the United States. Data were analyzed using causal chain analysis developed by Wolcott. Results: The analyses revealed three meanings for the illness: hidden disease, intentionally hidden disease, and inevitably hidden disease. The contexts of meaning of illness included characteristics of the illness, social stigma, structure of health care system and communication patterns and discourse between health care providers and clients. Conclusion: The meaning of illness was based on folk illness concepts and constructed in the sociocultural context. Folk etiology, pathology and interpretation of one's symptoms were factors influencing illness behavior. These findings could be a cornerstone for culture specific care for Korean Americans with chronic hepatitis B.