Journal of Information Systems and Technology Management
Not a member yet
436 research outputs found
Sort by
Public e-procurement and the duality of technology: a comparative study in the context of Brazil and of the state of Paraíba
Get PDFIn this study, an attempt was made to understand the e-procurement theme from the perspective of the duality of technology, understanding it both as a product and as a means for human actions, which, interacting with institutional properties, produces and reproduces the current organizational practices. From the multiple interpretative case studies conducted, it was evidenced that e-procurement is a subjective element, sometimes understood inconsistently by human agents in the different organizational contexts studied (Brazil and the State of Paraíba). Users appropriate the rules, knowledge, and assumptions incorporated into the implemented system to perform tasks, contributing to a reaffirmation of the status quo
Application of agile software methodologies in new media art: Bio-lencia as a study case
Get PDFInspirado en la idea original del artista plástico Alfredo Salomón y bajo el título de Bio-lencia, se creó un sistema en tiempo real que integra dos áreas del conocimiento: Arte y Computación. En este artículo analizamos, las características de la pieza como un producto de software y los retos que este tipo de productos presentan desde el punto de vista de la ingeniería de software. Presentamos una clasificación para el arte de medios inestables destacando sus características como productos de software y se realiza un ejercicio de producción de una pieza de este tipo utilizando metodologías ágiles de desarrollo. En particular discutimos la utilización de la Programación Extrema, la cual en el caso que aquí se presenta, permitió interactuar correctamente con el artista, quien es también el desarrollador principal. Se menciona también como las características de confiabilidad, robustez y tiempo de respuesta fueron de particular importancia para la correcta evaluación y funcionamiento del software que da vida a Bio-lencia. Finalmente como parte de las conclusiones se discuten los problemas y las lecciones que aprendimos durante el desarrollo de Bio-lencia.Inspired on the original idea by plastic artist Alfredo Salomón and using the title Bio-lencia, real-time system merging the knowledge areas of computing and art was created. In this paper we will analyze the piece\u27s characteristics as a software product and the challenges this tipe of products present from a software engineering point of view. We present a classification for unstable media art, highlighting its characteristics as software products, and demonstrate the production of such a piece by using agile development methodology. We particularly discuss the utilization of Extreme Programming, which allowed a correct interaction with the artist and main developer in this particular case. We also emphasize how the characteristics of trustworthiness, strength and rapid response time were of particular importance for the proper evaluation and functioning of the software used in Bio-lencia. Finally, as a part of the conclusions we discuss the problems we had to solve and the lessons we learned during the development of Bio-lenci
The dimensions of it portfolio management (ITPM): an analysis involving it managers in Brazilian companies
Get PDFThe aim of this study is to explore and validate the dimensions of IT Portfolio Management (ITPM) in Brazilian companies, based on three different models. Five case studies were carried out in Brazilian companies that invest more than nine million reals per year in IT. Eight top IT executives from those organizations who had knowledge of the dimensions of ITPM were interviewed. Items were modified and new items included within the dimensions, while examples of equipment or systems applicable to each of the four dimensions were also identified. Research that helps managers to better understand and structure their IT investments by using the dimensions of ITPM is important to assist in the management of such resources
Evaluation of perceived quality of the website of an online bookstore: an empirical application of the Barnes and Vidgen Model
Get PDFThis paper\u27s objective is to evaluate the perceived quality of the Website of an online bookstore using the Barnes and Vidgen Model. Implemented over the Internet, this empirical research collected data on the perceived quality of the Website, used to sell products and online services. The questionnaire used to gather the data was answered by a convenience sample of 213 respondents. The importance of quality attributes and the dimension of perceived quality were investigated. The results indicate that the three dimensions named Reliability, Usability and Information were the most noticeable
Understanding the subject\u27s behavior in the interaction with a decision support system under time pressure and missing information
Get PDFThe article seeks to determine how time pressure and missing information in decision-making affect the behavior of decision makers. Data was collected through an experimental task of simulating the purchase of a car, which was structured with the AHP (Analytic Hierarchy Process) multi-criteria method in a Decision Support System. When pressured by time, the experimental subjects focused on the car of their choice; whereas with no time pressure, some of them rationalized more, used the information, and did not agree with the chosen car. Assumptions of the Theory of Image justified some findings, indicating that previously structured images in the mind of the decision maker are a way to cope with time pressure. Given the missing information, the use of background knowledge and individual experience were the most prominent coping strategy
Digital certification in the Brazilian e-government
Get PDFEste artigo tem como objetivo analisar o papel da certificação digital no processo de desenvolvimento das ações de governo eletrônico no Brasil, inclusive apontando perspectivas futuras. Foi realizada uma pesquisa de natureza qualitativa, cujo instrumento utilizado foram entrevistas semi-estruturadas. Procedeu-se à seleção de 10 stakeholders desta temática no País, tanto na formulação de políticas públicas quanto na implantação e fiscalização de projetos afins. O estudo mostra que a certificação digital relaciona-se diretamente com aspectos atinentes à segurança da informação. Indiretamente, esta segurança que a certificação digital proporciona é condição necessária ao desenvolvimento do governo eletrônico, a partir do qual pode haver tanto o aperfeiçoamento de processos internos da Administração Pública quanto a maior disponibilidade de serviços públicos e a melhoria da qualidade de interface do Estado com o cidadão.This article aims to analyze the role of digital certification in the development process of the electronic government actions in Brazil, as well to provide future perspectives. Qualitative research was done and the data gathering performed through semi-structured interviews. Ten nationally recognized stakeholders were interviewed either for the conceiving of public policies regarding electronic government as well for the implementation and inspection of related projects. The study demonstrates that digital certification is straightly connected with information security. Indirectly, the security that digital certification provides is the major condition for the development of the electronic government, once it can provide the bases for the improvement of internal process in Public Administration and the increase of public services and better quality for the interface between the State and the citizen
The significance of management information systems for enhancing strategic and tactical planning
Get PDFManagement Information Systems (MIS) is the key factor to facilitate and attain efficient decision making in an organization. This research explores the extent to which management information systems implemented to make successful decisions at two selected financial organizations. The research examined whether the selected financial institutions of Bahrain vary as to the use of Management Information Systems leadership of decision making for strategic and tactical planning purposes. The research adapted the quantitative research design to examine two research hypotheses. A total of 190 forms were equally distributed to those who are working at different management levels at the selected organizations. The results of the research showed that MIS was primarily used to enhance strategic planning in both financial institutions. The regression analysis revealed that Tactical planning is found to have no effect on Decision Making, while Strategic planning has a clear effect on the Decision Making Effectiveness in both organizations
A vision of Orkut\u27s users: studying this phenomenon through cognitive absorption
Get PDFThis study aims to identify the influence that Cognitive Absorption has on the intention of using Orkut. It happens due to the fact that Cognitive Absorption is related to the state of deep involvement users carry with an individual task, performed with the support of Information Technology (IT); it corroborates the study on this virtual community. Therefore, through descriptive research with a quantitative character and with the aid of structural equations, 645 Orkut users were investigated. After the identification of suitability of all indexes tested and fit for both constructs and the final model. The conclusion drawn is that Cognitive Absorption explains the 41% intention of using Orkut, emphasizing that for this kind of IT the Cognitive Absorption seems perfectly adequate to measure the Intention of Use
Data information system to promote the organization data of collections - modeling considerations by the Unified Modelign Language (UML)
Get PDFPode-se afirmar que a evolução tecnológica (desenvolvimento de novos instrumentos de medição como, softwares, satélites e computadores, bem como, o barateamento das mídias de armazenamento) permite às Organizações produzirem e adquirirem grande quantidade de dados em curto espaço de tempo. Devido ao volume de dados, Organizações de pesquisa se tornam potencialmente vulneráveis aos impactos da explosão de informações. Uma solução adotada por algumas Organizações é a utilização de ferramentas de sistemas de informação para auxiliar na documentação, recuperação e análise dos dados. No âmbito científico, essas ferramentas são desenvolvidas para armazenar diferentes padrões de metadados (dados sobre dados). Durante o processo de desenvolvimento destas ferramentas, destaca-se a adoção de padrões como a Linguagem Unificada de Modelagem (UML, do Inglês Unified Modeling Language), cujos diagramas auxiliam na modelagem de diferentes aspectos do software. O objetivo deste estudo é apresentar uma ferramenta de sistemas de informação para auxiliar na documentação dos dados das Organizações por meio de metadados e destacar o processo de modelagem de software, por meio da UML. Será abordado o Padrão de Metadados Digitais Geoespaciais, amplamente utilizado na catalogação de dados por Organizações científicas de todo mundo, e os diagramas dinâmicos e estáticos da UML como casos de uso, sequências e classes. O desenvolvimento das ferramentas de sistemas de informação pode ser uma forma de promover a organização e a divulgação de dados científicos. No entanto, o processo de modelagem requer especial atenção para o desenvolvimento de interfaces que estimularão o uso das ferramentas de sistemas de informação.It can be argued that technological developments (e.g., measuring instruments like software, satellite and computers, as well as, the cheapening of storage media) allow organizations to produce and acquire a great amount of data in a short time. Due to the data volume, research organizations become potentially vulnerable to the information explosion impacts. An adopted solution is the use of information system tools to assist data documentation, retrieval and analysis. In the scientific scope, these tools are developed to store different metadata (data about data) patterns. During the development process of these tools, the adoption of standards such as the Unified Modeling Language (UML) stands out, whose diagrams assist the different scopes of software modeling. The objective of this study is to present an information system tool that assists organizations in the data documentation through the use of metadata and that highlights the software modeling process, through the UML. The Standard for Digital Geospatial Metadata will be approached, widely used to the dataset cataloging by scientific organizations around the world, and the dynamic and static UML diagrams like use cases, sequence and classes. The development of the information system tools can be a way to promote the scientific data organization and dissemination. However, the modeling process requires special attention during the development of interfaces that will stimulate the use of the information system tools
XLDM: an xlink-based multidimensional metamodel
Get PDFThe growth of data available on the Internet and the improvement of ways to handle them consist of an important issue while designing a data model. In this context, XML provides the necessary formalism to establish a standard to represent and exchange data. Since the technologies of data warehouse are often used for data analysis, it is necessary to define a cube model data to XML. However, data representation in XML may generate syntactic, semantic and structural heterogeneity problems on XML documents, which are not considered by related approaches. To solve these problems, it is required the definition of a data schema. This paper proposes a metamodel to specify XML document cubes, based on relationships between elements and XML documents. This approach solves the XML data heterogeneity problems by taking advantages of data schema definition and relationships defined by XLink. The methodology used provides formal rules to define the concepts proposed. Following this formalism is then instantiated using XML Schema and XLink. It also presents a case study in the medical field and a comparison with XBRL Dimensions and a financial and multidimensional data model which uses XLink