A Text-mining Approach to Evaluate the Importance of Information Systems Research Themes

This study combines text-mining techniques and exploratory factor analysis to identify significant research themes in the information systems (IS) field during the last decade. We analyzed 483 papers that have been published in the Management Information Systems Quarterly (MISQ) journal since 2010. We found that the most published themes in the MISQ are: (1) the impact of information systems and digital innovation on organizational performance, (2) the influence of computer-mediated communication and social media within individuals and groups, (3) information systems development and project management, (4) design science, and (5) decision making and information Systems. We also perform econometric analysis to study the effect of these research themes on the number of downloads, citations and reads in Google Scholar (SC), ResearchGate (RG), and the Association for Information Systems (AIS) library. This study shows that “the impact of information systems and digital innovation on organizational performance and “the influence of computer-mediated communication and social media within individuals and groups” are positively associated with the number of reads, downloads, and citations. However, “information systems development and project management” is negatively associated with the number of reads, downloads, and citations. The methodology used here can be implemented in other areas of research by journal editors and research institutions to identify the most sought-after areas of future research. Also, understanding the most relevant themes of IS research can help universities revise their IS doctorate curriculum to better meet the needs of today\u27s academic workforce

The Dimensions of Review Comprehensiveness and Its Effect on Review Usefulness: A Latent Dirichlet Allocation Approach

Online review sites like Yelp.com, TripAdvisor.com and AngiesList.com provide values to both business and consumers. A large body of literature investigates drivers of online review usefulness. Review comprehensiveness has been identified as one the most important dimension of review quality and an important predictor of review usefulness. This study contributes to the literature by crafting and operationalizing review comprehensiveness using a text mining approach. We also empirically test the effect of the operationalized review comprehensiveness construct on review usefulness. In practice, online review providers, especially Yelp.com, can benefit from this study by integrating review comprehensiveness in their sorting algorithms

Adoption of Implicit eWOM in Facebook: An Affect-as-Information Theory Perspective

Electronic word of mouth (eWOM) has gained inescapable attention among both practitioners and academia. Its importance lies in its simplicity yet profound impact on customers’ attitude toward specific brands or goods, and consequently affecting customer loyalty and intention to purchase. Although Social Network Services have emerged as platforms to spread eWOM, less attention has been paid towards implicit eWOM which is displayed by liking pages of products or through check-in feature of Facebook. Using the theoretical lens of affect-as-information theory, this study shows affective attitude of users toward implicit eWOM influences acceptance of eWOM. We also study how tie strength, image building, and involvement with Facebook collectively determine affective attitude. The implications for theory and practice are discussed as well as limitations and future research directions

A Study for Sustainable IT: Management Effects of On-Premises and On-Demand IT on Carbon Intensity

Reducing the level of carbon intensity – i.e., the level of carbon emission – is an important issue in cooperate IT management. Drawing upon the belief-action-outcome (BAO) framework, this study examines the impact of two different IT resources – i.e., on-premises IT (OPIT) and on-demand IT (ODIT) – on a firm’s carbon intensity. Also, we examine the moderating impact of green management strategies – i.e., environmental board oversight and environmental management incentives – on the effect of OPIT and ODIT on a firm’s carbon intensity. Using panel data with a sample of 3074 observations collected from 864 firms from 2016 to 2019, we find that OPIT usage is positively associated with carbon intensity, whereas ODIT usage is negatively associated with carbon intensity. In addition, we find that, while environmental board oversight mitigates the positive direct impact of OPIT on carbon intensity, environmental management incentives reinforce the negative direct impact of ODIT on carbon intensity

Metabolic and endocrinologic complications in beta-thalassemia major: a multicenter study in Tehran

BACKGROUND: The combination of transfusion and chelation therapy has dramatically extended the life expectancy of thalassemic patients. The main objective of this study is to determine the prevalence of prominent thalassemia complications. METHODS: Two hundred twenty patients entered the study. Physicians collected demographic and anthropometric data and the history of therapies as well as menstrual histories. Patients have been examined to determine their pubertal status. Serum levels of 25(OH) D, calcium, phosphate, iPTH were measured. Thyroid function was assessed by T3, T4 and TSH. Zinc and copper in serum were determined by flame atomic absorption spectrophotometry. Bone mineral density (BMD) measurements at lumbar and femoral regions have been done using dual x-ray absorptiometry. The dietary calcium, zinc and copper intakes were estimated by food-frequency questionnaires. RESULTS: Short stature was seen in 39.3% of our patients. Hypogonadism was seen in 22.9% of boys and 12.2% of girls. Hypoparathyroidism and primary hypothyroidism was present in 7.6% and 7.7% of the patients. About 13 % of patients had more than one endocrine complication with mean serum ferritin of 1678 ± 955 micrograms/lit. Prevalence of lumbar osteoporosis and osteopenia were 50.7% and 39.4%. Femoral osteoporosis and osteopenia were present in 10.8% and 36.9% of the patients. Lumbar BMD abnormalities were associated with duration of chelation therapy. Low serum zinc and copper was observed in 79.6% and 68% of the study population respectively. Serum zinc showed significant association with lumbar but not femoral BMD. In 37.2% of patients serum levels of 25(OH) D below 23 nmol/l were detected. CONCLUSION: High prevalence of complications among our thalassemics signifies the importance of more detailed studies along with therapeutic interventions

Acceptance of Implicit and Explicit eWOM: a Factor Based Study of Social Networking Sites

Electronic Word of Mouth (eWOM) has gained an inescapable attention among both practitioners and academia. Its importance lies in its simplicity yet profound impact on customers’ attitude toward specific brands or goods, and consequently affecting important concepts such as customer loyalty and intention to purchase. Recently Social Networking Sites (SNS) have emerged as platforms to spread eWOM; however, less attention has been paid towards the persuasiveness of eWOM in SNS. Therefore, using the theoretical lens of Elaboration Likelihood Model, this study tries to identify factors that affect acceptance of implicit and explicit eWOM. It contributes to the existing literature on eWOM by suggesting two distinct types of eWOM- implicit and explicit, and by identifying central and peripheral routes of ELM that would have impacts on their acceptance

Minimizing Risk with Users Who Embrace it: Innovative Approaches to Online Gambling

In recent years online innovations in Internet content offerings has produced a myriad of highly interactive fantasy sports and gambling sites designed to entice users to wage funds. Although factors such as accessibility and anonymity help motivate people to bet online, many hesitate to wager for reasons that must be examined if online betting websites (OBW) are to continue to innovate and grow. Our research examines how OBW users’ past experiences and perceived reputation influences psychological contract violation (PCV) and perceived institutional effectiveness as they pertain to OBW offerings. We also investigate the effect of institutional effectiveness on users’ concerns and betting behavioral intention. Initial results suggest that OBW users have concerns about transactional information even though they tend to be less risk adverse than non-OBW users. This study also found that psychological contract violation minimizes users’ perception about overall OBW structures’ effectiveness developed to protect online gamblers

Beyond the Review Sentiment: The Effect of Review Accuracy and Review Consistency on Review Usefulness

To date, most of the online review usefulness studies have examined how the non-verbal features (e.g., review rating) or verbal features (e.g., review sentiment) of online review affect review usefulness. However, the idea that online reviews as data products of online reviewers should meet some quality metrics is not well explored in prior research. To fill this theoretical gap, drawing upon Elaboration Likelihood Model (ELM) and data quality literature, this study examines the effect of argument quality on review usefulness. For this examination, we build and operationalize two variables (i.e., review consistency and review accuracy) as two dimensions of argument quality. We find a positive effect of review accuracy on review usefulness, but, opposite to our hypothesis, we find a negative effect of review consistency on review usefulness. We also find that elite-badge members write more accurate and more consistent reviews compared to non-elite badge members