Moving from Data-Constrained to Data-Enabled Research: Experiences and Challenges in Collecting, Validating and Analyzing Large-Scale e-Commerce Data

Widespread e-commerce activity on the Internet has led to new opportunities to collect vast amounts of micro-level market and nonmarket data. In this paper we share our experiences in collecting, validating, storing and analyzing large Internet-based data sets in the area of online auctions, music file sharing and online retailer pricing. We demonstrate how such data can advance knowledge by facilitating sharper and more extensive tests of existing theories and by offering observational underpinnings for the development of new theories. Just as experimental economics pushed the frontiers of economic thought by enabling the testing of numerous theories of economic behavior in the environment of a controlled laboratory, we believe that observing, often over extended periods of time, real-world agents participating in market and nonmarket activity on the Internet can lead us to develop and test a variety of new theories. Internet data gathering is not controlled experimentation. We cannot randomly assign participants to treatments or determine event orderings. Internet data gathering does offer potentially large data sets with repeated observation of individual choices and action. In addition, the automated data collection holds promise for greatly reduced cost per observation. Our methods rely on technological advances in automated data collection agents. Significant challenges remain in developing appropriate sampling techniques integrating data from heterogeneous sources in a variety of formats, constructing generalizable processes and understanding legal constraints. Despite these challenges, the early evidence from those who have harvested and analyzed large amounts of e-commerce data points toward a significant leap in our ability to understand the functioning of electronic commerce.Comment: Published at http://dx.doi.org/10.1214/088342306000000231 in the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org

A FRAMEWORK TO SUPPORT SERVICE-ORIENTED ARCHITECTURE INVESTMENT DECISION

Service-oriented architecture (SOA) is a system paradigm that structures business functions as loosely coupled services to enable business agility. SOA requires significant up-front investments, and in return, promises a vast array of benefits. Unfortunately, in contrast to the costs of the investment, monetary benefits associated with SOA are more difficult to measure. For one reason, benefits such as increased agility or improved flexibility are elusive in nature, making it harder to define metrics for their calculation. For another, SOA value is realized in long term under uncertainty, and traditional capital budgeting methods often fail to capture uncertainty when valuing investments. In this paper, we provide a decision framework to analyze the monetary impact of SOA investment in an organization. Combining traditional NPV analysis with option pricing models, our framework accounts for operational and strategic costs and benefits of SOA and proposes an extended investment value to support managerial investment decision

Behavioral and Psychosocial Factors as Mediators of the Oral Health Impact on Adolescents Quality of Life

The goal of this study was to evaluate the association of behavioral and psychosocial factors as mediators of the oral health impact conditions related to the adolescents quality of life. Cross-sectional study with 1417 students, both sexes, 15–19 years old in a Brazilian city. The impact of oral diseases related to the quality of life was assessed by Oral Impact on Daily Performances (OIDP), dental caries by the decay-missing-filled teeth index (DMFT index), periodontal disease by the Community Periodontal Index (CPI index) and the pain at endpoint. Information on the behavioral and psychosocial factors was collected. Statistical analysis was performed using the chi-square test and multiple logistic regression, with 5% significance level. The majority of adolescents considered that the oral health conditions produced high impact on the quality of life (66.1%). It was evidenced that caries, pain of dental origin, birth order, regular dental care, and high sugar consumption significantly associated with high impact on quality of life related to oral health. The decay and the dental origin pain produce a high impact on the quality of life related to oral health, and these impacts are associated with both behavioral and psychosocial factors

Evaluating Tenure Cases for Scholars Active in Emergent or Non-mainstream IS research topics

The number of topics and methods that our field is embracing is growing rapidly. This includes methodologies such as design science, analytics, neuro-IS and contextual areas such as healthcare IT or the public sector. This rapid expansion poses challenges for junior faculty engaged in this research, because external letter writers may struggle to understand how to evaluate their work. The outcomes of inquiry for these new methods or growing topics often vary from the “normal” metrics for productivity, such as journal publications, manifest in the broader IS discipline. How can we, as a field, develop a broader understanding of how to evaluate the tenure cases of individuals that use new methods or who investigate emerging topics? In this panel, we foster a conversation on how to, and if there is a need to, develop new metrics for evaluating tenure cases for scholars active in emergent or non-mainstream IS research topics

Carta do Editor

É com enorme prazer que apresentamos mais uma edição da revista Anais da Faculdade de Medicina de Olinda. A revista, nesta edição, reflete a qualidade das ações institucionais que vêm sendo desenvolvidas ao longo deste último semestre. A partir desta edição, consolidou-se a implantação do Sistema de Jornais Abertos e de Livre Acesso (OJX), potencializando a automação de todo processo editorial, ou seja, esta passou a ter registro como uma revista online, facilitando o acesso de autores, avaliadores e editores que buscam publicar os resultados de suas pesquisas, e qualificando o Anais para a primeira etapa da sua indexação internacional, já solicitada ao Latin Index. [...

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Chegamos ao número 6 da Anais da Faculdade de Medicina de Olinda, traduz no nível insti-tucional a necessária abordagem frente ao nosso cor-po docente e discente dos desafios impostos pela Co-vid-19. [...

Carta ao Editor

Carta ao Editor

Carta do editor

O sentimento de incerteza que se aba-teu sobre a humanidade a partir de dezembro de 2019, provocada por uma Síndrome Respiratória Gripal Grave por conta de um novo tipo de coronavírus o SARS e a consequente reconhecimento do estado pandêmico nos primeiros meses de 2020 fez com que pesquisadores, professo-res e estudantes da área de saúde pudessem concentrar suas ações na compreensão da etio-pato-fisiologia da nova doença deno-minada de COVID-19. [...

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Carta ao Edito

Sistema de controle de acesso via smart card com autenticação biométrica da impressão digital

Este trabalho visa a integração de duas tecnologias de controle de acesso já existentes. A intenção é proporcionar uma forma mais segura e eficaz de proteger um ambiente de acesso restrito. As tecnologias a serem integradas são smart cards e identificação biométrica da impressão digital. A solução foi desenvolvida com a utilização de um computador, um leitor biométrico, uma leitora e gravadora de smart cards e dois smart cards com suporte a tecnologia Java Card. O sistema permite cadastrar usuários, capturando sua impressão digital e os dados cadastrais, posteriormente o usuário é vinculado a um cartão inteligente. No momento da autenticação do acesso o usuário precisa fazer a verificação da impressão digital e apresentar o smart card. O acesso só é liberado se a digital estiver cadastrada no sistema e se o indivíduo for o portador legítimo do cartão. O diferencial do projeto está na unificação de tecnologias de segurança já contempladas. A posse de um cartão inteligente e a impressão digital constituem um controle de acesso baseado em dois fatores: autenticação baseada no que se possui e autenticação baseada nas características individuais