Abstract This research adopts DeLone & McLean (2003) information system success Model to take the Service Quality of KHB Information System service quality as the research subject, and makes an investigation on the Service Quality of KHB Information System users like ships shipping industry, the ship serves the agent industry, loading and unloading contracting industry, etc. It is carried by the questionnaire and discusses the correlation between information quality, system quality, service quality and user satisfaction relations. This discovery of the research is listed as follows¡G ¤@¡B "Information Quality" positively affects "User Satisfaction" of KHB Information System. ¤G¡B "System Quality" positively affects "User Satisfaction" of KHB Information System. ¤T¡B "Service Quality" positively affects "User Satisfaction" of KHB Information System. ¥|¡B "User Satisfaction" positively affects "System Benefit" of KHB Information System. The conclusion of the research is that the Service Quality of KHB Information System service quality has a positive influence on the users¡¦ satisfaction, and further positively influences system benefit. Meanwhile, it reveals that users have different needs for the Service Quality of KHB Information System and suggests that KHB may provide tailored service to the users. Keywords¡GInformation System, DeLone & McLean information system success Model

The debate on how to measure the value of IT is an ongoing debate within the IT evaluation research. Research about the value of IT tends to focus on formal aspects and ignore informal aspects such as the subjective perceptions of individuals and researchers acknowledge a lack of informal evaluation methods used in practice. This study aims to answer two research questions: How can informal value of IS be evaluated? and What are the benefits and drawbacks of relying on informal value when assessing IS? To answer these questions a qualitative case study have been conducted using the DeLone & McLean IS Success Model as a theoretical framework. The results show that using the model was successful however we argue that important aspects were missing in the model. The benefits of relying on informal value showed to be the possibilities of discovering aspects of value that are not visible in formal evaluation. The drawbacks of performing an informal evaluation are that they are complicated and time-consuming and do not promise useful results.

Cette thèse est consacrée à l'étude du transport électronique dans des modèles désordonnés non ergodiques, dans le cadre de la théorie des opérateurs de Schrödinger aléatoires.Pour commencer, nous reformulons l'outil principal pour notre étude, l'analyse multi-échelles, dans le cadre non ergodique. Nous établissons les conditions d'homogénéité que l'opérateur doit vérifier pour appliquer cette méthode. Ensuite, nous étudions les propriétés spectrales des opérateurs de Delone-Anderson non ergodiques. Ces systèmes modélisent l'énergie d'une particule en interaction avec un milieu dont la structure atomique est quasi-cristalline et la nature des impuretés est désordonnée. Dans le cas où les mesures de probabilité associées au potentiel de simple site sont régulières, en dimension 2 et sous l'effet d'un champ magnétique, nous établissons une transition métal-isolant et l'existence d'une énergie de mobilité qui sépare les régions de localisation et de délocalisation dynamiques. Pour des mesures de simple site régulières et celle de Bernoulli, nous démontrons la localisation dynamique en bas du spectre. De plus, nous obtenons une description quantitative de la région de localisation dynamique en termes de paramètres géométriques de l'ensemble de Delone de base.Nous concluons ce travail avec l'étude de la densité d'états intégrée pour des modèles de Delone-Anderson, en combinaison avec des outils de la théorie des systèmes dynamiques associés aux quasi-cristaux. Sous certaines conditions sur la géométrie de l'ensemble de Delone sous-jacent, nous montrons l'existence de la densité d'états intégrée. De plus, dans le cas d'une perturbation de Delone-Anderson du Laplacien libre, nous démontrons qu'elle a un comportement asymptotique de Lifshitz en bas du spectre. / His thesis is devoted to the study of electronic transport in non ergodic disordered models, in the framework of random Schrödinger operators.We start by reformulating the main tool in our study, the multiscale analysis, in the non ergodic setting. We establish suitable homogeneity conditions on the operator, in order to apply this method.Next, we study the spectral properties of non ergodic Delone-Anderson operators. These models represent a particle interacting with a medium whose atomic structure is quasi-crystalline and the nature of its impurities is disordered. In the case where the probability measures associated to the single-site potential are regular, in dimension 2 and under the effect of a magnetic field, we establish a metal-insulator transition and the existence of a mobility edge that separates the localization and delocalization regions. In arbitrary dimension, for regular and for Bernoulli single-site measures, we show dynamical localization at the bottom of the spectrum. Moreover, we obtain a quantitative lower bound on the size of the localization region in terms of the geometric parameters of the underlying Delone structure.We conclude this essay by studying the integrated density of states for Delone-Anderson models, using tools from the theory of dynamical systems associated to quasicrystals. Under certain conditions on the geometry of the underlying Delone set, we show the existence of the integrated density of states. Furthermore, in the case of a Delone-Anderson perturbation of the free Laplacian, we show it exhibits Lifshitz tails at the bottom of the spectrum.

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A critical factor of e-learning success is the e-learning readiness of the online user. However, there is a scarcity of studies on online instructors' e-learning readiness (E-Readiness) in an online learning environment. The purpose of this study was to evaluate whether there were correlations among online instructor E-Readiness dimensions and factors at the design and delivery stages that affect system outcomes. In this study, the DeLone and McLean model was used as a framework for research to test E-Readiness with the System Design stage (comprising System Quality, Information Quality, and Service Quality), System Delivery stage (comprising System Use, and User Satisfaction) and Net Benefits stage (comprising Net Benefits). A total of 113 online instructors at a Caribbean university system completed a Web-based questionnaire containing previously validated and adapted items. The questions were answered using a five-point Likert scale and the survey results were analyzed using aggregates and linear regression statistical methods. The results revealed that the e-learning systems success score of the university was 4.07 out of 5 or 81.4%, while the E-Readiness score of online instructors was 4.53 out of 5, or 90.6%. Linear regression analysis showed that E-Readiness was a significant and positive predictor of the System Design, System Delivery, and System Outcome stages and their associated dimensions. The results of multiple linear regression analysis showed that the constructs together accounted for 42.2% of the variance in Net Benefits. Of the six predictors in the model, User Satisfaction provided the largest unique contribution when the other predictors in the model were held constant. The other predictors in the model (System Quality, Service Quality, Information Quality, System Use and E-Readiness) were not statistically significant and provided no significant or unique contribution to Net Benefits. Further information is provided regarding factors affecting net benefits among online instructors using online learning environments. This information can be used to address online instructors' barriers to technology use.

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When measuring Information Systems (IS) success, it is important to know the type of IS being measured, the systems objectives, and the unit of analysis. As organizations invest in technology to help achieve strategic goals, they need to be able to measure IS success. Measuring the effectiveness of IS from an organizational perspective is the effect it has on achieving organizational goals. The effectiveness of information systems is a measure of net benefits. This empirical study investigated IS success in terms of the DeLone and McLean IS success model variable, net benefits. In order to measure IS success, the context of the investigation and the unit of analysis are as important as what is being measured. This investigation, in the context of a building automation system (BAS), evaluated the net benefits success measurement with the organization as the unit of analysis. Two hypothesis testing studies were conducted. The first study was a predictive investigation, which researched the relationship among the independent variables, kilowatt hours, kilowatt demand, and the dependent variable, the cost of energy. A multiple regression analysis was conducted to understand to what extent the independent variables could predict the dependent variable. The second study was a correlational investigation. This study was conducted to ascertain whether a building automation system affects the cost of energy. A Point Biserial Correlation Coefficient test was conducted to understand the relationship between the cost of energy and stores with a building automation system and those without. A t-test was conducted to understand the level of significance. The results of the analysis showed that the relationship between the cost of energy and a BAS is statistically significant and that the variables kilowatt hours and kilowatt demand are statistically significant as predictors of the cost of energy.

Thesis (M.Com. (Information Systems))--University of the Witwatersrand, Faculty of Commerce, Law and Management, School of Economic and Business Sciences, 2014. / Successful implementation of electronic medical record systems (EMRs) can result in many benefits. However, the adoption and use of EMRs by health workers is often problematic. Understanding the perceptions and attitudes of health workers towards the use of these systems is therefore important. This study has contributed by examining (a) perceptions of health workers towards the characteristics of EMR systems, (b) perceptions of the impacts of EMR use on healthcare delivery and other workplace outcomes (i.e. individual work performance and job satisfaction), (c) their intentions to continue using EMRs. The DeLone and McLean Information System Success model and the Information Systems Continuance model were used to underpin the study and to hypothesize inter-relationships amongst these perceptions and attitudes. The empirical context of the study was Tygerberg Hospital in Cape Town, South Africa. A survey was carried out and 142 responses were obtained from the nurses at the hospital. Results showed that system characteristics, namely, system quality, information quality and service quality were significant predictors of user satisfaction, which in turn was found to be a significant predictor of EMR use. Satisfaction together with perceptions of individual impacts and healthcare impacts was found to lead to continuance intention. Users reported statistically significantly higher levels of job satisfaction than non-users. Healthcare impact perceptions was positively associated with job satisfaction. Based on the results of the study, it is recommended that decision makers, policy makers and EMR vendors pay close attention to the service quality and the system quality of EMRs as these are the key determinants of user satisfaction. It is also recommended that managers ensure that all healthcare workers be given access to and encouraged to use EMRs to perform their work related task as EMR users have been shown to have higher levels of job satisfaction than non-users.

Práce se zabývá efektivností internetových prezentací, jejím hodnocením a zvyšováním. Vychází z konceptů posuzování efektivnosti informačních systémů, které adaptuje na podmínky internetových prezentací. Definuje model pro posuzování efektivnosti internetových prezentací. Tento model dokáže integrovat všechny v současnosti používané metody pro hodnocení efektivnosti internetových prezentací a dokáže tak určit jejich roli při zvyšování efektivnosti. Ve druhé části je vysvětlena aplikace jedné z metod - analýzy návštěvnosti - na definovaný model. Práce popisuje teoretické pozadí analýzy návštěvnosti a její techniky použitelné pro hodnocení a zvyšování efektivnosti internetových prezentací.

One of the major challenges of MIS activities is the difficulty in measuring the effectiveness of delivered systems. The principal purpose of my research is to explore this field in order to develop an instrument by which to measure such effectiveness. Conceptualisation of Information System (IS) Effectiveness has been substantially framed by DeLone and McLean's (1992) Success; Model. But with the innovation in Information Technology (IT) over the past decade, and the constant pressure in IT to improve performance, there is merit in undertaking a fresh appraisal of the issue. This study built on the model of IS Success developed by DeLone and MeLean, but was broadened to include related research from the domains of IS, Management and Marketing. This analysis found that an effective IS function is built on three pillars: the systems implemented; the information held and delivered by these systems; and, the service provided in support of the IS function. A common foundation for these pillars is the concept of stakeholder needs. In seeking to appreciate the effectiveness: of delivered IS applications in relation to the job performance of stakeholders, this research developed an understanding of what quality means in an IT context I argue that quality is a more useful criterion for effectiveness than the more customary measures of use and user satisfaction. Respecification of the IS Success Model was then proposed. The second phase of the research was to test this model empirically through judgment panels, focus groups and interviews. Results consistently supported the structure and components of the respecified model. Quality was determined as a multi-dimensional construct, with the key dimensions for the quality of delivered IS differing from those used in the research from other disciplines. Empirical work indicated that end-user stakeholders derived their evaluations of quality by internally evaluating perceived performance of delivered IS in relation to their expectations for such performance. A short trial explored whether, when overt measurement of expectations was concurrent with the measurement of perceptions, a more revealing appraisal of delivered IS quality was provided than when perceptions alone were measured. Results revealed a difference between the two measures. Using the New IS Success Model as the foundation, and drawing upon the related theoretical and empirical research, an instrument was developed to measure the quality/effectiveness of delivered IS applications. Four trials of this instrument, QUALIT, are documented. Analysis of results from preliminary trials indicates promise in terms of business value: the instrument is simple to administer and has the capacity to pinpoint areas of weakness. The research related to the respecification of the New IS Success Model and the associated empirical studies, including the development of QTJALIT, have both contributed to the development of theory about IS Effectiveness. More precisely, my research has reviewed the components of an information system, the dimensions comprising these components and the indicators of each, and based upon these findings, formulated an instrument by which to measure the effectiveness of a delivered IS.