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This paper provides further evidence on the predictive power of online community traffic with regard to stock prices. Using the largest dataset to date, spanning 8 years and almost the complete set of SP500 stocks, we train a classifier using a set of features entirely extracted from web-traffic data of financial online communities. The classifier is shown to outperform the predictive power of a baseline...
Advertisers on Social Network Sites often use recommendations by others in a user's networks to endorse products. While these familiar others are hypothesized to be more effective in influencing users than unfamiliar others, there is a catch: familiarity does not necessarily ensure similarity to the familiar person, a potential problem because the combination of familiarity and dissimilarity has been...
This paper investigates whether news momentum can predict medium-term stock index developments. News momentum can be built by aggregating tone of news over the past weeks. We find that news momentum can predict future stock price developments and establish profitable trading strategies that beat buy-and-hold and momentum benchmarks. Trades are issued for significant changes in momentum between current...
This study addresses the lacking research on the adoption of online collaboration technology. It proposes an extension of the Technology Acceptance Model (TAM) for assessing the effect of social influence and technology readiness on collaboration technology adoption and alternative collaboration technology use. In a first pretest of the proposed Technology Acceptance Model for Collaboration Technology...
Objective: the objectives of this article are: (a) to provide an analysis of the key factors of an efficient web strategy with regard to the issue of patient empowerment, (b) to build an index for measuring the degree of empowerment of healthcare providers' web sites, (c) to measure the degree of "patient web empowerment" within the Italian National Health Service (INHS). Methods: a Patient...
Corporate environments have acknowledged the role of agile coaches in agile methods implementation. An agile coach focuses on developing the potential of people and its application to obtain valuable results faster. This paper analyzes the influence of the practices adopted by an agile consultant for enhancing overall interactions and knowledge sharing, such as Open Space and Lightning Talks sessions...
The work paradigm of crowd sourcing holds huge potential for organizations by providing access to a large workforce. However, an increase of crowd work entails increasing effort to evaluate the quality of the submissions. As evaluations by experts are inefficient, time-consuming, expensive, and are not guaranteed to be effective, our paper presents a concept for an automated classification process...
We present a complete specification and formal verification of a high-assurance data structure, namely an array-based set (or alternatively, a multiset), of arbitrary size, using the ACL2 theorem prover. This particular data structure is a sanitized version of one that was used in a high-assurance development at Rockwell Collins. We additionally demonstrate how this high-assurance specification can...
Advances in information and communication technologies (ICTs) have created a global environment in which citizens from more developed countries have greater access to mobile broadband Internet services. The research question posed in this study is: Do national policy initiatives, regulatory measures, or governance practices increase a nation's mobile broadband diffusion? There is little research that...
Suicide is an important emerging problem among active duty personnel and veterans of recent conflicts in Iraq and Afghanistan. Suicide rates among veterans treated in the VA System are about 50% higher than in the general population, and the rate of suicide among active duty service personnel has recently exceeded the rate in the general population. Preventing suicides and providing services is a...
Modern organizations are increasingly relying on teams to solve problems and make decisions. In order to effectively utilize teams, it is important to understand the conditions in which the team can function most efficiently. One of the conditions required to make team work successful is to ensure that there is consensus among the team members about the decisions made. Organizations consider consensus-based...
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