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Equation Modeling (equation + modeling)
Kinds of Equation Modeling Terms modified by Equation Modeling Selected AbstractsA STRUCTURAL EQUATION MODELING OF ALCOHOL USE AMONG YOUNG ADULTS IN THE U.S. MILITARY: COMPLEXITIES AMONG STRESS, DRINKING MOTIVES, IMPULSIVITIY, ALCOHOL USE AND JOB PERFORMANCEALCOHOLISM, Issue 2008Sunju Sohn Aims:, Young male adults in the U. S. military drink at much higher rates than civilians and females of the same age. Drinking has been shown to be associated with stress and individuals' ability to effectively cope with stressors. Despite numerous studies conducted on young adults' drinking behaviors such as college drinking, current literature is limited in fully understanding alcohol use patterns of the young military population. The aim of the present study was to develop and test the hypothesized Structural Equation Model (SEM) of alcohol use to determine if stress coping styles moderate the relationship between stress, drinking motives, impulsivity, alcohol consumption and job performance. Methods:, Structural equation models for multiple group comparisons were estimated based on a sample of 1,715 young (aged 18 to 25) male military personnel using the 2005 Department of Defense Survey of Health Related Behaviors among Military Personnel. Coping style was used as the grouping factor in the multi-group analysis and this variable was developed through numerous steps to reflect positive and negative behaviors of coping. The equivalences of the structural relations between the study variables were then compared across two groups at a time, controlling for installation region, race/ethnicity, marital status, education, and pay grade, resulting in two model comparisons with four coping groups. If the structural weight showed differences across groups, each parameter was constrained and tested one at a time to see where the models are different. Results:, The results showed that the hypothesized model applies across all groups. The structural weights revealed that a moderation effect exists between a group whose tendency is to mostly use positive coping strategies and a group whose tendency is to mostly use negative coping strategies (,,2(39)= 65.116, p<.05). More specifically, the models were different (with and without Bonferroni Type I error correction) in the paths between "motive and alcohol use" and "alcohol use and alcohol-related consequences (job performance)." Conclusions:, It seems plausible that coping style significantly factors into moderating alcohol use among young male military personnel who reportedly drink more excessively than civilians of the same age. The results indicate that it may be particularly important for the military to assess different stress coping styles ofyoung male military personnel so as to limit excessive drinking as well as to promote individual wellness and improve job performance. [source] Teens' consumer interaction styles: the impact of assertive and aggressive behaviour on attitudes towards marketing practicesINTERNATIONAL JOURNAL OF CONSUMER STUDIES, Issue 2 2010Christy Crutsinger Abstract Over half-billion global teens between the ages of 13 and 18 years represent a dynamic opportunity for marketers who wish to grow their businesses and build consumer loyalty. Consumer interaction styles are the consistent behaviour patterns that individuals employ in transactions or exchanges in the marketplace. Assertiveness and aggressiveness represent two distinct interaction styles that enable individuals to achieve a desired outcome. Because teen consumers are an important consumer segment and subscribe to the notion that their voices must be heard, understanding their interaction styles is necessary for businesses and marketers. The purpose of this study was to examine teens' consumer interaction styles according to specific demographic and lifestyle characteristics and investigate the impact of assertive and aggressive interaction styles on attitudes towards marketing practices (i.e. product, retailing, advertising, and pricing). Data were collected from a US teen sample (n = 467) at both rural and urban high schools. Independent t -tests compared the propensity of teens' assertive and aggressive consumer interaction styles according to specific demographic and lifestyle characteristics. Structural Equation Modeling using AMOS 6.0 program was performed to test the hypothesized relationships. Results indicated that an assertive interaction style was pervasive among US teen consumers, while the aggressive interaction style had disparities according to unique demographic and lifestyle characteristics. Assertive and aggressive interaction styles demonstrated negative influences on teen consumers' attitudes towards products and retailing practices. By interpreting the negative impact of teens' assertive and aggressive consumer interaction styles, marketers can develop effective strategies that appeal to this demanding consumer. [source] Perceptions of internal marketing and organizational commitment by nursesJOURNAL OF ADVANCED NURSING, Issue 1 2009Ching Sheng Chang Abstract Title.,Perceptions of internal marketing and organizational commitment by nurses. Aim., This paper is a report of a study to determine whether a favourable perception of internal marketing is associated with increased organizational commitment. Background., The role of nurses in healthcare treatment is expanding, and becoming more important as time progresses. Therefore, the primary concern of business of health care is to use internal marketing strategies effectively to enhance and develop nurses' organizational commitment and reduce turnover to promote competitive advantages for the organization. Methods., A cross-sectional design was used. Questionnaires were distributed in 2006 to a convenience sample of 450 Registered Nurses in two teaching hospitals in Taiwan, and 318 questionnaires were returned. Eighteen were excluded because of incomplete answers, which left 300 usable questionnaires (response rate 66·7%). Validity and reliability testing of the questionnaire proved satisfactory and Structural Equation Modeling was used to analyse the data. Results., A favourable perception of internal marketing was associated with increased organizational commitment. Communication management had the greatest influence on organizational commitment and external activity had the smallest impact. Conclusion., Hospital managers need to recognize the importance of internal marketing for staff retention and the survival of their organizations as competitive pressure increases. As a great deal of time and costs are involved in educating nurses, the best way to retain outstanding nurses and reduce turnover costs and personnel problems is for employers to understand the needs and expectations of their nursing staff. [source] Exploring Chinese consumer repurchasing intention for services: An empirical investigationJOURNAL OF CONSUMER BEHAVIOUR, Issue 6 2008LI Dongjin With the increasingly tough competition, companies are trying to keep existing customers as well as expand the market base in China, which implies that understanding the Chinese consumer repurchasing intention has become one of the important issues. Consumer repurchase intention is an important indicator to predict repurchase behavior. The aim of this paper is to understand the factors that influence consumer repurchase intention in China. Specifically, this paper explores the relationship between perceived values, customer satisfaction, switching costs, purchase interval, and repurchase intention in China with Structural Equation Modeling. The empirical study finds that perceived value, customer satisfaction, and switching costs are positively related to the repurchase intention while purchase interval does not have significant influence on the repurchase intention. In addition, the perceived value is positively related to the customer satisfaction and there is no significant relationship between switching costs and customer satisfaction. Copyright © 2008 John Wiley & Sons, Ltd. [source] Innovativeness, exploratory behavior, market mavenship, and opinion leadership: An empirical examination in the Asian contextPSYCHOLOGY & MARKETING, Issue 8 2007Ayalla Ruvio The market maven construct, developed by Feick and Price (1987), has been used in empirical studies in the USA, South Africa, Germany, Poland, and Hungary. This study extends previous research by being the first to use the general mavenship concept in an Asian country (Israel). Furthermore, the study examines market mavenship and opinion leadership as outcome concepts arising from exploratory behavior or innovativeness tendencies. Additionally, the impact of a three-dimensional exploratory behavior concept is compared to the impact of a unidimensional innovativeness concept on opinion leadership and market mavenship. Structural Equation Modeling (SEM) was used to test the two nomological models based on a sample of 142 adult Israeli consumers. Although both exploratory behavior and innovativeness affect market mavenship and opinion leadership, the impact of the former is stronger. Additionally, the impact of the "new brand trial" facet of exploratory behavior on market maven was comparable to that of innovativeness, whereas its impact on opinion leadership was weaker than the impact of innovativeness. © 2007 Wiley Periodicals, Inc. [source] Differential Equation Modeling of HIV Viral Fitness Experiments: Model Identification, Model Selection, and Multimodel InferenceBIOMETRICS, Issue 1 2009Hongyu Miao Summary Many biological processes and systems can be described by a set of differential equation (DE) models. However, literature in statistical inference for DE models is very sparse. We propose statistical estimation, model selection, and multimodel averaging methods for HIV viral fitness experiments in vitro that can be described by a set of nonlinear ordinary differential equations (ODE). The parameter identifiability of the ODE models is also addressed. We apply the proposed methods and techniques to experimental data of viral fitness for HIV-1 mutant 103N. We expect that the proposed modeling and inference approaches for the DE models can be widely used for a variety of biomedical studies. [source] Structural Equation Modeling: A Bayesian Approach by S.-Y.BIOMETRICS, Issue 4 2007No abstract is available for this article. [source] Structural Equation Modeling and Natural Systems by J. B. GRACEBIOMETRICS, Issue 3 2007Article first published online: 31 AUG 200 No abstract is available for this article. [source] Examining the Antecedents and Consequences of CIO Strategic Decision-Making Authority: An Empirical Study,DECISION SCIENCES, Issue 4 2008David S. Preston ABSTRACT Despite the strategic importance of information technology (IT) to contemporary firms, chief information officers (CIO) often still have varying degrees of strategic decision-making authority. In this study, we apply the theory of managerial discretion to define CIO strategic decision-making authority and argue that the CIO's level of strategic decision-making authority directly influences IT's contribution to organization performance. We also draw on the power and politics perspective in the strategic decision-making literature to identify the direct antecedents to the CIO's strategic decision-making authority. A theoretical model is presented and empirically tested using survey data collected from a cross-industry sample of 174 matched pairs of CIOs and top business executives through structural equation modeling. The results suggest that organizational climate, organizational support for IT, the CIO's structural power, the CIO's level of strategic effectiveness, and a strong partnership between the CIO and top management team directly influence the CIO's level of strategic decision-making authority within the organization. The results also suggest that the CIO's strategic decision-making authority in the organization directly influences the contribution of IT to firm performance and that effective CIOs have a greater influence on IT's contribution when provided with strategic decision-making authority. [source] Supply Management Under High Goal Incongruence: An Empirical Examination of Disintermediation in the Aerospace Supply ChainDECISION SCIENCES, Issue 3 2008Christian L. Rossetti ABSTRACT Aftermarket sales and profits are becoming an increasingly important part of an original equipment manufacturer's (OEM) business model. Because replacement parts often do not require further manufacturing, OEMs act as intermediaries in the aftermarket. As with any intermediary, the OEM must concern itself with suppliers disintermediating its supply chain selling replacement parts directly to the OEM's customers. We frame supply chain disintermediation (SCD) as a principal,agent contracting problem between an OEM buyer and a supplier. Hypotheses relate contract conditions, goal incongruence, supplier capabilities and contract enforcement to SCD. The data are collected from the aerospace industry using a multimethod study, combining an Internet-based survey with archival data. Causal modeling with structural equation modeling (SEM) shows general support for the hypotheses. Particularly, SCD is positively related to buyer,supplier goal incongruence. The agency model offers insights that differ from previous transaction-cost-based models of buyer,supplier relationships. OEM buyers with a lucrative aftermarket should consider aligning goals through incentives rather than relying entirely on economic hostages associated with specific assets. [source] An Empirical Study of the Effect of Knowledge Management Processes at Individual, Group, and Organizational Levels,DECISION SCIENCES, Issue 2 2003Rajiv Sabherwal ABSTRACT To enhance our understanding of knowledge management, this paper focuses on a specific question: How do knowledge management processes influence perceived knowledge management effectiveness? Prior literature is used to develop the research model, including hypotheses about the effects of four knowledge management processes (internalization, externalization, socialization, and combination) on perceived individual-level, group-level, and organizational-level knowledge management effectiveness. The study was conducted at the John F. Kennedy Space Center of the National Aeronautics and Space Administration using a survey of 159 individuals and two rounds of personal interviews. Structural equation modeling was performed to test measurement and structural models using the survey data. The emergent model suggests that internalization and externalization impact perceived effectiveness of individual-level knowledge management. Socialization and combination influence perceived effectiveness of knowledge management at group and organizational levels, respectively. The results also support the expected upward impact in perceived effectiveness of knowledge management, from individual to group level, as well as from group level to organizational level. The study's limitations and implications for practice and future research are described. [source] A Structural Analysis of the Effectiveness of Buying Firms' Strategies to Improve Supplier PerformanceDECISION SCIENCES, Issue 1 2000Daniel R. Krause Many manufacturing firms have increased the amount of component parts and services they outsource, while refocusing on their core capabilities. Outsourcing parts and services to independent, external suppliers means that suppliers' performance is increasingly critical to the long-term success of these buying firms. Buying firms are increasingly using disparate supplier development strategies to improve supplier performance including supplier assessment, providing incentives for improved performance, instigating competition among suppliers, and direct involvement of the buying firm's personnel with suppliers through activities such as training of suppliers' personnel. Using resource-based theory, internalization theory, and structural equation modeling, we examine the impact of these supplier development strategies on performance. We conclude that direct involvement activities, where the buying firm internalizes a significant amount of the supplier development effort, play a critical role in performance improvement. [source] The Determinants of Students' Perceived Learning Outcomes and Satisfaction in University Online Education: An Empirical Investigation,DECISION SCIENCES JOURNAL OF INNOVATIVE EDUCATION, Issue 2 2006Sean B. Eom ABSTRACT In this study, structural equation modeling is applied to examine the determinants of students' satisfaction and their perceived learning outcomes in the context of university online courses. Independent variables included in the study are course structure, instructor feedback, self-motivation, learning style, interaction, and instructor facilitation as potential determinants of online learning. A total of 397 valid unduplicated responses from students who have completed at least one online course at a university in the Midwest were used to examine the structural model. The results indicated that all of the antecedent variables significantly affect students' satisfaction. Of the six antecedent variables hypothesized to affect the perceived learning outcomes, only instructor feedback and learning style are significant. The structural model results also reveal that user satisfaction is a significant predictor of learning outcomes. The findings suggest online education can be a superior mode of instruction if it is targeted to learners with specific learning styles (visual and read/write learning styles) and with timely, meaningful instructor feedback of various types. [source] Metacognition as a mediator of the effects of impairments in neurocognition on social function in schizophrenia spectrum disordersACTA PSYCHIATRICA SCANDINAVICA, Issue 5 2010P. H. Lysaker Lysaker PH, Shea AM, Buck KD, Dimaggio G, Nicolò G, Procacci M, Salvatore G, Rand KL. Metacognition as a mediator of the effects of impairments in neurocognition on social function in schizophrenia spectrum disorders. Objective:, This study explored whether Mastery, a domain of metacognition that reflects the ability to use knowledge about mental states to respond to psychological challenges, mediated the effects of neurocognition on the frequency of social contact and persons' capacity for social relatedness. Method:, Participants were 102 adults with schizophrenia or schizoaffective disorder. Neurocognition was represented by a single factor score produced by a principal components analysis of a neurocognitive test battery. Mastery was assessed using the metacognitive assessment scale and social functioning by the quality of life scale. Results:, Using structural equation modeling, specifically measured-variable path analysis, a mediational model consisting of neurocognitive capacity linked to mastery and capacity for social relationships and mastery linked with frequency of social contact and capacity for social relatedness showed acceptable fit to the observed data. This persisted after controlling for negative and cognitive symptoms. Conclusion:, Results suggest that certain forms of metacognition mediate the influence of neurocognition upon function in schizophrenia. [source] Grade-Level Invariance of a Theoretical Causal Structure Predicting Reading Comprehension With Vocabulary and Oral Reading FluencyEDUCATIONAL MEASUREMENT: ISSUES AND PRACTICE, Issue 3 2005Paul Yovanoff This research investigates the relative importance of vocabulary and oral reading fluency as measurement dimensions of reading comprehension as the student passes from elementary to high school. Invariance of this model over grades 4 through 8 is tested using two independent student samples reading grade-level appropriate passages. Results from structural equation modeling indicate that the model is not invariant across grade levels. Vocabulary knowledge is a significant and constant predictor of overall reading comprehension irrespective of grade level. While significant, fluency effects diminish over grades, especially in the later grades. Lack of grade level invariance was obtained with both samples. Results are discussed in light of vertically linked reading assessments, adequate yearly progress, and instruction. [source] A social network perspective on heroin and cocaine use among adults: evidence of bidirectional influencesADDICTION, Issue 7 2009Amy S. B. Bohnert ABSTRACT Aims While several studies have documented a relationship between initiation of drug use and social network drug use in youth, the direction of this association is not well understood, particularly among adults or for stages of drug involvement beyond initiation. The present study sought to examine two competing theories (social selection and social influence) in the longitudinal relationship between drug use (heroin and/or cocaine) and social network drug use among drug-experienced adults. Design Three waves of data came from a cohort of 1108 adults reporting a life-time history of heroin and/or cocaine use. Setting Low-income neighborhoods with high rates of drug use in Baltimore, Maryland. Participants Participants had weekly contact with drug users and were 18 years of age or older. Measurements Drug use data were self-report. Network drug use was assessed through a social network inventory. Close friends were individuals whom the participant reported seeing daily or rated as having the highest level of trust. Findings Structural equation modeling indicated significant bidirectional influences. The majority of change in network drug use over time was due to change in the composition of the network rather than change in friends' behavior. Drug use by close peers did not influence participant drug use beyond the total network. Conclusions There is evidence of both social selection and social influence processes in the association between drug use and network drug use among drug-experienced adults. [source] Test of Nyborg's General Trait Covariance (GTC) model for hormonally guided development by means of structural equation modelingEUROPEAN JOURNAL OF PERSONALITY, Issue 3 2003Martin Reuter Nyborg's General Trait Covariance (GTC) model for hormonally guided development investigates the influence of gonadal hormones and fluid intelligence on body build, achievement, and socioeconomic variables. According to the model, testosterone should be negatively related to height, fat/muscle ratio, intelligence, income, and education. It is conceived that this influence should be determined to a great extent by mutual relationships between these variables. The model was tested by means of structural equation modeling (SEM) in a sample of 4375 males who had served in the United States Armed Forces. The results largely confirm Nyborg's androtype model but in addition reflect the relationships between the variables included in a quantitative causal manner. It could be shown that testosterone has a negative influence on crystallized intelligence and that this effect is mainly mediated by the negative influence of testosterone on education. An additional multiple group analysis testing for structural invariance across age groups revealed that the mediating role of education is more pronounced in old veterans. Copyright © 2002 John Wiley & Sons, Ltd. [source] Financial Literacy of Young Adults: The Importance of Parental SocializationFAMILY RELATIONS, Issue 4 2010Bryce L. Jorgensen This article tests a conceptual model of perceived parental influence on the financial literacy of young adults. Structural equation modeling was used to test whether (a) parents were perceived to influence young adults' financial knowledge, attitudes, and behaviors and (b) the degree to which young adults' financial attitudes mediated financial knowledge and perceived parental influence on young adults' financial behaviors. A sample consisting of 420 college students participated in the study. Findings by the College Student Financial Literacy Survey (CSFLS) indicated that perceived parental influence had a direct and moderately significant influence on financial attitude, did not have an effect on financial knowledge, and had an indirect and moderately significant influence on financial behavior, mediated through financial attitude. [source] A Mediation Model of Interparental Collaboration, Parenting Practices, and Child Externalizing Behavior in a Clinical SampleFAMILY RELATIONS, Issue 3 2009John Kjøbli The present study examined maternal and paternal parenting practices as mediators of the link between interparental collaboration and children's externalizing behavior. Parent gender was tested as a moderator of the associations. A clinical sample consisting of 136 children with externalizing problems and their families participated in the study. Structural equation modeling was used to test the study hypotheses. Maternal and paternal parenting practices fully mediated the relation between interparental collaboration and externalizing behavior. When the mediated pathways were tested separately, paternal parenting practices functioned as a mediator, whereas maternal parenting practices did not, indicating that the relationship between interparental collaboration, parenting practices and externalizing behavior was moderated by parent gender. The findings suggest that treatments aimed at reducing child externalizing behavior may be strengthened by focusing on interparental collaboration in addition to parenting practices, while also underscoring the need to involve fathers in interventions. [source] Alkali Metal Doped Organic Molecules on Insulators: Charge Impact on the Optical PropertiesADVANCED MATERIALS, Issue 36 2010Thomas Dienel Doping-induced absorption changes of organic molecules on an insulating solid are reported. The charge transfer between alkali metal atoms and individual molecules on a surface leads to new electronic transitions identified with optical absorption spectroscopy. Progressive doping allows the discrimination of neutral, monoanionic and dianionic molecules in the solid state through examination of the spectra and rate equation modeling. [source] Memory in the aging brain: Doubly dissociating the contribution of the hippocampus and entorhinal cortexHIPPOCAMPUS, Issue 11 2007Andrew P. Yonelinas Abstract Since the time of Aristotle it has been thought that memories can be divided into two basic types; conscious recollections and familiarity-based judgments. Neuropsychological studies have provided indirect support for this distinction by suggesting that different regions within the human medial temporal lobe (MTL) are involved in these two forms of memory, but none of these studies have demonstrated that these brain regions can be fully dissociated. In a group of nondemented elderly subjects, we found that performance on recall and recognition tests was predicted preferentially by hippocampal and entorhinal volumes, respectively. Structural equation modeling revealed a double dissociation, whereby age-related reductions in hippocampal volume resulted in decreases in recollection, but not familiarity, whereas entorhinal volume was preferentially related to familiarity. The results demonstrate that the forms of episodic memory supported by the human hippocampus and entorhinal cortex can be fully dissociated, and indicate that recollection and familiarity reflect neuroanatomically distinct memory processes. © 2007 Wiley-Liss, Inc. [source] Testing effective connectivity changes with structural equation modeling: What does a bad model tell us?HUMAN BRAIN MAPPING, Issue 12 2006Andrea B. Protzner Abstract Structural equation modeling (SEM) is a statistical method that can assess changes in effective connectivity across tasks or between groups. In its initial application to neuroimaging data, anatomical connectivity provided the constraints to decompose interregional covariances to estimate effective connections. There have been concerns expressed, however, with the validity of interpreting effective connections for a model that does not adequately fit the data. We sought to address this concern by creating two population networks with different patterns of effective connectivity, extracting three samples sizes (N = 100, 60, 20), and then assessing whether the ability to detect effective connectivity differences depended on absolute model fit. Four scenarios were assessed: (1) elimination of a region showing no task differences; (2) elimination of connections with no task differences; (3) elimination of connections that carried task differences, but could be expressed through alternative indirect routes; (4) elimination of connections that carried task differences, and could not be expressed through indirect routes. We were able to detect task differences in all four cases, despite poor absolute model fit. In scenario 3, total effects captured the overall task differences even though the direct effect was no longer present. In scenario 4, task differences that were included in the model remained, but the missing effect was not expressed. In conclusion, it seems that when independent information (e.g., anatomical connectivity) is used to define the causal structure in SEM, inferences about task- or group-dependent changes are valid regardless of absolute model fit. Hum Brain Mapp, 2006. © 2006 Wiley-Liss, Inc. [source] How Does the Comforting Process Work?HUMAN COMMUNICATION RESEARCH, Issue 3 2006An Empirical Test of an Appraisal-Based Model of Comforting Burleson and Goldsmith's (1998) comforting model suggests an appraisal-based mechanism through which comforting messages can bring about a positive change in emotional states. This study is a first empirical test of three causal linkages implied by the appraisal-based comforting model. Participants (N = 258) talked about an upsetting event with a confederate trained to display low, moderate, or high levels of person centeredness and nonverbal immediacy. After the conversation, participants completed several scales. Latent composite structural equation modeling was used to examine the model, which showed that person-centered and immediate emotional support exerted a direct effect on emotional improvement. Above and beyond this direct effect, person-centered comfort also encouraged people to verbalize their thoughts and emotions. These verbalizations facilitated cognitive appraisals, which in turn exerted a strong direct effect on emotional improvement. Mediation analyses further suggested that verbalizations of positive emotion words in conjunction with reappraisals partially mediated the influence of person-centered comfort on emotional improvement. [source] The Social Capital of Blacks and Whites: Differing Effects of the Mass Media in the United StatesHUMAN COMMUNICATION RESEARCH, Issue 2 2006Christopher E. Beaudoin This study relied on telephone survey interviews of adults in two U.S. metropolitan areas to examine whether the relationship between mass media use and social capital varies according to ethnicity. A multigroup approach taken with structural equation modeling validates a four-factor model of social capital for Blacks and Whites and then, with the implementation of a comprehensive model that also includes mass media inputs, tests for structural variance between the ethnic groups. A well-fitting comprehensive model is achieved, with significant differences between Blacks and Whites in terms of the mass media use structures. In support of the two hypotheses, the relationship between news use and social capital is less positive for Blacks than for Whites and the relationship between entertainment TV viewing and social capital is more negative for Blacks than for Whites. These findings are discussed in terms of literature involving mass media effects on social capital, news coverage of ethnic groups, and ethnic differences in self-conceptualization and media responses. [source] Workplace and organizational accident causation factors in the manufacturing industryHUMAN FACTORS AND ERGONOMICS IN MANUFACTURING & SERVICE INDUSTRIES, Issue 1 2010Panagiota Katsakiori Abstract Labor inspectors investigate accidents to identify possible accident causes, initiate prosecution, and plan future accident prevention. The Method of Investigation for Labor Inspectors (MILI) was designed to help them to identify workplace and organizational factors in addition to immediate factors and legal breaches. The present study analyzes the impact of workplace (work design and provision of unsafe equipment) and organizational factors (training and employee involvement) on accident causation and validates MILI on real accident cases. Accident data from the manufacturing sector are analyzed with LISREL structural equation modeling. Results confirm the relationship between work design and training as well as between provision of unsafe equipment and employee involvement. The present study provides evidence that MILI is a structured accident investigation method allowing multiple accident causation factors to be revealed and that it could help all interested parts (not only labor inspectors, but companies as well) to thoroughly investigate occupational accidents. © 2009 Wiley Periodicals, Inc. [source] Cultural differences in conceptual models of ride comfort for high-speed trainsHUMAN FACTORS AND ERGONOMICS IN MANUFACTURING & SERVICE INDUSTRIES, Issue 2 2009Joo Hwan Lee This study focuses on an analysis of the difference in cultural experiences for similar services through analyzing the difference in conceptual models of ride comfort for passengers of KTX (Korea Train eXpress) and TGV (Train a Grand Vitesse). These trains operate with identical platforms; KTX was introduced by K-TGV (Korea-TGV) based on TGV (French high-speed train). For the conceptual models of ride comfort, this study surveyed 200 KTX passengers on the Seoul--Busan line (duration: 2 hours 30 minutes) and surveyed 150 France TGV passengers on the Paris--Marseilles line (duration: 2 hours 40 minutes). The conceptual models of ride comfort were analyzed using structural equation modeling (SEM). In the results of the study, though there were differences in cultural environment (e.g., physical environment, body size, etc.) and cultural mentality (e.g., preference, unconscious rule, etc.), the models of ride comfort for both countries shared similar critical factors. However, there were significant differences in loading values of ride comfort for these critical factors. In particular, there were differences of 1.5 to 2 times between the two models regarding the subfactors seat factor and human fatigue factor. In conclusion, this study elicits that experience factor is the most influential on ride comfort, and cultural factors are applied as essential variables in ride comfort improvement. © 2009 Wiley Periodicals, Inc. [source] The effect of learning organization culture on the relationship between interpersonal trust and organizational commitmentHUMAN RESOURCE DEVELOPMENT QUARTERLY, Issue 2 2009Ji Hoon Song The primary purpose of this research was to assess the effect of learning organization culture on the linkage between interpersonal trust and organizational commitment. The study sample was obtained from employees of two major Korean conglomerates. Online questionnaires were completed by 321 respondents. Structural equation modeling (SEM) was used to detect the effects of learning organization culture on the basis of the model fit to data comparisons and the significance of path coefficient estimates in the hypothesized model. The results suggest that learning organization culture works as a mediating variable to explain the association between interpersonal trust and organizational commitment. Recommendations for future research and implications for human resource development research and practice are discussed. [source] The effects of personality, affectivity, and work commitment on motivation to improve work through learningHUMAN RESOURCE DEVELOPMENT QUARTERLY, Issue 4 2002Sharon S. Naquin This study examined the degree to which the dimensions from the Five-Factor Model of personality, affectivity, and work commitment (including work ethic, job involvement, affective commitment, and continuance commitment) influenced motivation to improve work through learning. Data were obtained from a nonrandom sample of 239 private-sector employees who were participants of in-house training programs. The hypothesized causal relationships were tested using structural equation modeling. Findings indicated that these dispositional effects were significant antecedents of motivation to improve work through learning. Specifically, 57 percent of the variance in motivation to improve work through learning was explained by positive affectivity, work commitment, and extraversion. [source] A Longitudinal Examination of Physiological Regulation in Cocaine-Exposed Infants Across the First 7 Months of LifeINFANCY, Issue 1 2009Pamela Schuetze This study examined the association between prenatal exposure to cocaine and physiological regulation across the first 7 months of age. Measures of respiratory sinus arrhythmia (RSA) were obtained from 169 (82 cocaine-exposed and 87 nonexposed) infants during baseline periods at 1 month and 7 months of age and during tasks designed to elicit positive and negative affect at 7 months of age. After controlling for maternal age, gestational age, and obstetrical risk, structural equation modeling indicated that the association between prenatal exposure to cocaine and baseline RSA at 7 months of age was direct even in the presence of an indirect effect through baseline RSA at 1 month of age. There were no indirect effects through maternal affect during mother-infant interactions assessed at 1 month of age. Analyses also indicated a direct association between prenatal exposure to cocaine and RSA regulation to negative affect at 7 months of age. [source] Environmental and heritable causes of cancer among 9.6 million individuals in the Swedish family-cancer databaseINTERNATIONAL JOURNAL OF CANCER, Issue 2 2002Kamila Czene Abstract The genetic and environmental components in 15 common cancers were estimated using the nationwide Swedish Family-Cancer Database. Tetrachoric correlations were used to describe similarity in cancer liability among family members. Structural equation modeling was used to derive estimates of the importance of genetic and environmental effects. Statistically significant estimates of proportion of cancer susceptibility, accounted for by genetic effects, were obtained for all studied cancers except for leukemia. The estimate was highest in thyroid cancer (53%), followed by tumors at endocrine glands (28%), testis (25%), breast (25%), cervix (22%), melanoma (21%), colon (13%), nervous system (12%), rectum (12%), non-Hodgkin lymphoma (10%), lung (8%), kidney (8%), urinary bladder (7%), stomach (1%) and leukemia (1%). The estimates of shared environmental effects ranged from 0% (cervix) to 15% (stomach). The childhood shared environmental effects were most important in testicular cancer (17%), stomach cancer (13%) and cervix in situ (13%). Our results indicate that environment has a principal causative role in cancer at all studied sites except for thyroid. The relatively large effect of heritability in cancer at some sites, on the other hand, indicates that even though susceptibility genes have been described at many cancer sites, they are likely to explain only part of the genetic effects. © 2002 Wiley-Liss, Inc. [source] | ||||||||||||||||||||||||||||||||||||||||||||||