Relationships among ERP post-implementation success constructs: An analysis at the organizational level

Enterprise resource planning (ERP) systems implementation success factors have been widely researched; however, few have investigated ERP post-implementation success in organizational contexts. The paucity of research into ERP system success evaluations partly motivates this research. To that end, the objective of this study is twofold. First, it primarily investigates the relationships among six constructs or dimensions in a respecified ERP system success measurement model, which was developed from prior relevant frameworks. Second, this research adds to the body of knowledge in the information system (IS) success evaluation domain, especially with its focus on ERP packages. The extended ERP system success model was tested using data collected in a cross-sectional field survey of 109 firms in two European countries. Structural equation modeling (SEM) was used to test six relevant hypotheses. The SEM results showed that five out of the six hypotheses have significant, positive associations. Namely, the constructs of System Quality, Service Quality, Individual Impact, Workgroup Impact, and Organizational Impact have strong relevance in ERP success conceptualization, whereas Information Quality does not, at least, in the context of our data. The pertinence of the study’s findings for IS success evaluation as well as its implications for practice and research are discussed.     

The priority factor model for customer relationship management system success

As the market competition becomes keen, constructing a customer relationship management system is coming to the front for winning over new customers, developing service and products for customer satisfaction and retaining existing customers. However, decisions for CRM implementation have been hampered by inconsistency between information technology and marketing strategies, and the lack of conceptual bases necessary to develop the success measures. Using a structural equation analysis, this study explores the CRM system success model that consists of CRM initiatives: process fit, customer information quality, and system support; intrinsic success: efficiency and customer satisfaction; and extrinsic success: profitability. These constructs underlie much of the existing literature on information system success and customer satisfaction perspectives. We found the empirical support for CRM implementation decision-making from 253 respondents of 14 companies which have implemented the CRM system. These findings should be of great interest to both researchers and practitioners.     

Do organizational citizenship behaviors lead to information system success?: Testing the mediation effects of integration climate and project management

We adapted a model in organizational theory to determine whether organizational citizenship behaviors (OCBs) of system implementation teams influenced that organization's integration climate and improved their project management, resulting in successful system implementation. Surveys were elicited from 254 system users in various business organizations that had implemented large-scale IS in the previous year; the analysis of their responses provided support for our model, suggesting that the OCB of the implementation team created a higher level of integration climate and more effective project management, and that these in turn influenced information system success. Implications for researchers and managers are discussed and limitations are identified.     

面向任务成功性的装备保障体系复杂网络鲁棒性分析

本文尝试基于复杂网络理论将装备保障体系网络映射为指控网络、修理网络和供应网络,运用网络化的观点研究装备保障体系的鲁棒性。首先结合部队装备保障实际情况和保障组织原则,以保障任务的成功性为度量标准提出了保障节点的任务分解、支援和协同策略,并在此基础上建立了装备保障体系的任务鲁棒性指标,最后结合仿真案例分析了在不同攻击形式下的保障任务分解策略对网络的整体影响,验证了模型的合理性和有效性。     

A proposed model for evaluating the success of WebCT course content management system

WebCT is an online course management system which is accessed through the portal. It has a wide range of tools which support teaching and learning and enable online delivery of lecture notes, representations, surveys and quizzes, coursework, discussion boards and much more. Evaluation of WebCT systems success or effectiveness is a fundamental challenge to education institutions. A review of previous e-learning research suggests a focused evaluation approach, thus offering limited discussion of comprehensive views of WebCT systems success or systematic and practical guidance to its evaluations. Based on a prevalent information systems success model, this paper proposes and describes a revised model for evaluating WebCT systems success in educational settings. The study findings suggest that content quality, system quality, support service quality, teaching and learning quality, self-regulated learning, intention to use/use, user satisfaction and net benefits are important factors for evaluating the success of WebCT CCMS. Implications of the proposed model for theory and practice were illustrated. In addition, future research directions that extend the reported study are also preferred.     

基于Petri网的装备系统任务成功概率仿真

通过对装备系统在不同任务剖面下的成功性的评估,可以反映装备保障系统的整体保障效能。由于影响任务成功性的因素较多,关系复杂,目前还没有相应的数学公式进行解析,因此采取系统模拟仿真的方法来实现对装备系统任务成功概率的评估。在建立装备系统的保障模型、任务模型与基于Petri网的仿真模型的基础上,可以进行有效的仿真评估,对装备保障工作具有积极意义。文章首先分别介绍了各模型的构建、仿真模型的运行机理;其次介绍了评估系统的框架及其功能组成;最后提供了在某自行高炮系统数据基础上的仿真实例。     

The measurement of user satisfaction with question answering systems

Question Answering Systems (QAS) are receiving increasing attention from IS researchers, particularly those in the information retrieval and natural language processing communities. Evaluation of an IS's success and user satisfaction are important issues, especially for emerging online service systems using the Internet. Although many QAS have been implemented, little work has been done on the development of an evaluation model for them. Our purpose was to develop a validated instrument to measure user satisfaction with QAS (USQAS). The proposed validated instrument was intended as a reference for the design of QAS from a user's perspective.     

A meta-analytic assessment of the DeLone and McLean IS success model: An examination of IS success at the individual level

Fifteen years ago, DeLone and McLean published their original model of IS success, which received considerable attention in the literature. Given the widespread acceptance of the model, we conducted a meta-analysis to determine whether the model had been validated by research studies reported in the literature. By aggregating the results of 52 empirical studies that examined relationships within the IS success model at the individual level of analysis, we found support for the relationships that encompass the model. We also offer insights on IS success based on the findings of our work.     

Understanding consumers’ continuance intention towards mobile purchase: A theoretical framework and empirical study – A case of China

Although mobile purchase is convenient in the age of mobile commerce, many consumers still do not utilize mobile purchase to its full potential. From the mobile vendor’s perspective, retaining current customers and facilitating their continued purchase are crucial to create profitability and achieve a sustainable development. An understanding of the continuance intention towards mobile purchase can provide insights into mobile vendors’ marketing campaigns. Therefore, it is important to examine the determinants that impact continuance intentions of consumers for mobile purchase. Drawing upon information success model, flow theory and trust, this study proposed and empirically tested an integrated model to better understand the determinants of consumers’ continued intention to purchase on mobile sites. Empirical data from 462 users who had experience with mobile purchase were tested against the proposed research model by using structural equation modelling (SEM). The results indicated that information quality, and privacy and security concerns are the main factors affecting trust, whereas service quality is the main factor affecting flow. System quality, and privacy and security concerns affect satisfaction. Trust affects flow, which in turn affects satisfaction. These three factors together affect continued intention towards mobile purchase. The findings of this study provide several important implications for mobile commerce research and practice.     

Assessing the success of e-government systems: An employee perspective

By using information system (IS) success-based approaches from the perspective of government employees, this paper investigates the success of e-government systems. Structural equation modeling (SEM) techniques were applied to data collected by a questionnaire from 154 employees of e-government systems in Serbia. In this study, we empirically evaluated the model for measuring the success of e-government systems consisting of constructs from the updated DeLone and McLean IS success model coupled with the demographic conditions. Seven out of ten hypothesized relationships between the seven success variables are significantly supported. The findings of this study can be used to assess the success of e-government systems from the standpoint of the government employees.     

Comparing e-Learning tools’ success: The case of instructor–student interactive vs. self-paced tools

e-Learning tools have profoundly transformed modern pedagogical approaches. Vendors provide different types of systems, such as self-paced (SP) and instructor–student interactive (ISI) e-Learning tools. Although both types of tools represent promising solutions to facilitate the learning process, it is important to theoretically identify a framework to evaluate the success of these tools and assess whether one type of tool is more effective than another. Toward this end, we (1) propose a model to evaluate e-Learning tools’ success by extending and contextualizing Seddon’s information systems (IS) success model for the e-Learning environment and (2) formulate four hypotheses to predict the differences in the success factors between SP and ISI tools. We test the model and hypotheses using data from 783 students across seven higher education institutions in Hong Kong. The results support the proposed e-Learning tool success model and three of the four hypotheses. ISI tools outperform SP tools in terms of system quality, perceived usefulness, satisfaction, and learning outcome.     

Understanding consumer intention in online shopping: a respecification and validation of the DeLone and McLean model

The increasing popularity of online shopping has led to the emergence of new economic activities. To succeed in the highly competitive e-commerce environment, it is vital to understand consumer intention. Understanding what motivates consumer intention is critical because such intention is key to survival in this fast-paced and hypercompetitive environment. Where prior research has attempted at most a limited adaptation of the information system success model, we propose a comprehensive, empirical model that separates the ‘use’ construct into ‘intention to use’ and ‘actual use’. This makes it possible to test the importance of user intentions in determining their online shopping behaviour. Our results suggest that the consumer's intention to use is quite important, and accurately predicts the usage behaviour of consumers. In contrast, consumer satisfaction has a significant impact on intention to use but no direct causal relation with actual use.     

飞机操纵系统建模及降阶仿真研究

通过对某型号飞机三轴（纵向、横向、侧向）操纵系统（机构操纵系统、增稳系统、自动加码仪系统）组成、结构及功能分析,建立了完整的数学模型。将系统分布参数分段集中化处理,在Ｍａｔｌａｂ环境下以模块化方式进行系统仿真得到了与实际系统静动态响应相吻合的仿真模型。由于飞机操纵系统模型的高阶非线性,采用“最小二乘参数拟合法”进行等效降阶处理,得到低阶带延迟环节的简化模型。这种以时域响应进行优化、频域响应进行验证     

How does leadership affect information systems success? The role of transformational leadership

We examined the positive impact of transformational leadership on IS success in organizations via two psychological mechanisms of system users’—perceived organizational support and systems self-efficacy. Our conceptual model was assessed using a sample of 251 employees from a multi-national bank in Korea. Overall, our results supported the hypothesized relationships: transformational leadership was positively related to system users’ IS success, and both perceived organizational support and systems self-efficacy of the system users mediated the relationship between transformational leadership and IS success. The results call for manager's attention to the importance of transformational leadership development in organizations.     

构建能量敏感的无线传感器网络信任模型

为在无线传感器网络环境中构建一个高效、可扩展和安全的信任模型,研究了无线传感器网络信任模型,并提出了一种能量敏感的无线传感器网络信任模型.该模型构建了一种新的风险信誉关系模型,并将剩余能量因素推广到信任值中,将通信信任和能量信任结合在一起,全面的考虑了网络的安全因素,建立了一个更加安全、可信的无线传感器网络.仿真实验和分析证明,该模型较其他模型,能够更快的识别出恶意节点,在节点交易成功率和网络系统信息的安全性方面都有较大的提高,大大增强了系统的稳定性和安全性.     

Modeling and 2-sensor blind identification of human cardiovascular system

This paper presents modeling and blind identification of human cardiovascular system. In contrast to the population-based methods widespread in current practice, the proposed method does not require any a priori knowledge of the cardiovascular system. This paper develops a human cardiovascular system model, analyzes its identifiability, and identifies the model using two diametric blood pressure measurements. The aortic blood pressure reconstructed using the identified model can eliminate the use of invasive aortic blood pressure measurement for cardiovascular monitoring. Results based on the data from a realistic human cardiovascular system simulator demonstrate the validity of the proposed model and identification method.     

关于利用逆系统方法进行非线性系统仿真模型校验的初步研究

该文首次提出利用逆系统的方法进行非线性系统仿真模型的校验。对于非线性系统难以得到任何形式精确理论解的情况下，所提出的方法在一定程度上能够判断仿真模型是否能够正确反映数学模型。     

Factors affecting the implementation success of Internet-based information systems

The Internet has come to revolutionize the way in which business conducts commercial activities. In this paper, we report on the development of a model of Internet-based information systems (IIS) implementation in business-to-consumer electronic commerce based on IS implementation and technology innovation–implementation studies. Our research model suggests that eight factors, comprising the characteristics of IIS technology innovation, organizational factors, and IS related factors, affect the implementation success of IIS. IIS themselves are characterized by three dimensions: volume, sophistication, and information contents. The suggested model was empirically tested using survey results from Korean companies that have adopted IIS. The results of multivariate regression analysis reveal that compatibility and IS infrastructure are key determinants of the extent of IIS implementation (in terms of volume, sophistication, and information contents). IS expertise potentially affects the extent of IIS implementation.     

基于反馈评价的P2P网络信任机制研究

为了提高P2P网络的安全性.提出一种P2P环境下以反馈信息评价作为可信度的信任机制,阐述了模型中的信任度的定义,并详细介绍了信任度的计算.对仿真系统进行了性能测试,并对测试结果进行了分析.仿真结果表明,该模型对于信息窃取、信息篡改等类型的恶意攻击有较好的抑制作用.     

Examining the effects of information system characteristics and perceived usefulness on post adoption usage of information systems

Understanding post adoption behavior has emerged as an important issue in IS research. Organizations have invested in a plethora of Information Systems (IS) and the benefits that can be gained from these systems depend on their usage. Prior research has examined factors that impact users’ intention to continue using the IS. However, comprehending post adoption IS usage behavior has not received much attention. Building on TAM and IS success model, this study proposes that information quality and system integration influence perceived IS usefulness which will then drive post adoption usage of the IS. Post adoption IS usage is conceptualized as a broad concept that includes extended usage and exploratory usage. Data (N = 1032) was collected to test the model, in the context of a web-based student information system that students use to manage their academic work. The results show that at the post adoption stage, perceived IS usefulness is a good predictor of extended usage and exploratory usage. However, surprisingly IS usefulness was found to explain a much larger variance in exploratory usage. Information quality and system integration were found to influence IS usefulness. However, information quality also has a direct affect on extended usage, while system integration directly influenced exploratory usage. Assessment of the moderating role of gender and internet experience on model relationships reveals interesting insights. Implications are drawn for future research and practice.