Search results for "Computer Science Applications"
showing 10 items of 3993 documents
MonPaaS: An Adaptive Monitoring Platformas a Service for Cloud Computing Infrastructures and Services
2015
This paper presents a novel monitoring architecture addressed to the cloud provider and the cloud consumers. This architecture offers a monitoring platform-as-a-Service to each cloud consumer that allows to customize the monitoring metrics. The cloud provider sees a complete overview of the infrastructure whereas the cloud consumer sees automatically her cloud resources and can define other resources or services to be monitored. This is accomplished by means of an adaptive distributed monitoring architecture automatically deployed in the cloud infrastructure. This architecture has been implemented and released under GPL license to the community as “MonPaaS”, open source software for integra…
To sit or to stand, that is the question : examining the effects of work posture change on the well-being at work of software professionals
2017
Despite the central role of human resources in determining the success of software companies, relatively little academic research has been conducted on the well-being at work aspect of software professionals. This study aims to address the aforementioned gap by examining the effects of using standing instead of sitting workstations on the well-being at work of software professionals in terms of their physical activity, mental alertness, stress, and musculoskeletal strain. An intervention study consisting of two measurements was conducted for 29 employees of a large Finnish software company by using questionnaires and the Firstbeat Lifestyle Assessment service. The findings of the study sugg…
Discovering web services in social web service repositories using deep variational autoencoders
2020
Abstract Web Service registries have progressively evolved to social networks-like software repositories. Users cooperate to produce an ever-growing, rich source of Web APIs upon which new value-added Web applications can be built. Such users often interact in order to follow, comment on, consume and compose services published by other users. In this context, Web Service discovery is a core functionality of modern registries as needed Web Services must be discovered before being consumed or composed. Many efforts to provide effective keyword-based service discovery mechanisms are based on Information Retrieval techniques as services are described using structured or unstructured textdocumen…
A Data-Driven Architecture for Personalized QoE Management in 5G Wireless Networks
2017
With the emergence of a variety of new wireless network types, business types, and QoS in a more autonomic, diverse, and interactive manner, it is envisioned that a new era of personalized services has arrived, which emphasizes users' requirements and service experiences. As a result, users' QoE will become one of the key features in 5G/future networks. In this article, we first review the state of the art of QoE research from several perspectives, including definition, influencing factors, assessment methods, QoE models, and control methods. Then a data-driven architecture for enhancing personalized QoE is proposed for 5G networks. Under this architecture, we specifically propose a two-ste…
Context-aware vehicular cyber-physical systems with cloud support: architecture, challenges, and solutions
2014
[EN] The advances in wireless communication techniques, mobile cloud computing, and context-aware technologies boost a growing interest in the design, development, and deployment of vehicular networks for emerging applications. This leads to an increasing evolutionary tendency to change from vehicular networks toward cloud-assisted context-aware vehicular cyber-physical systems. In this article, we first propose a multi-layered context-aware architecture and introduce two crucial service components, vehicular social networks and context-aware vehicular security. Then we propose an application scenario regarding the context-aware dynamic parking services by illuminating the cloud-assisted ar…
Innovative public governance through cloud computing
2014
Purpose – The purpose of this paper is to identify and analyze challenges and to discuss proposed solutions for innovative public governance through cloud computing. Innovative technologies, such as federation of services and cloud computing, can greatly contribute to the provision of e-government services, through scaleable and flexible systems. Furthermore, they can facilitate in reducing costs and overcoming public information segmentation. Nonetheless, when public agencies use these technologies, they encounter several associated organizational and technical changes, as well as significant challenges. Design/methodology/approach – We followed a multidisciplinary perspective (social, be…
Hospital performance: Efficiency or quality? Can we have both with IT?
2015
This paper explores influence of IT investment on hospital efficiency and quality.There is a direct effect of IT investment on service quality in hospitals.There is a moderating effect of quality on operational efficiency in hospitals.There is a U-shaped relationship between IT investments and operational efficiency.IT investments have diminishing returns beyond a certain point. The influence of IT investment on hospital efficiency and quality are of great interest to healthcare executives as well as insurers. Few studies have examined how IT investments influence both efficiency and quality or whether there is an optimal IT investment level that influences both in the desired direction. De…
Antecedents of online banking satisfaction and loyalty: empirical evidence from Finland
2009
This study endeavours to contribute to a better understanding of Service Quality (SQ) in online banking by examining the various dimensions related to creating a satisfactory online banking experience. The authors develop a conceptual model and test it with a convenience sample of 183 online banking users. The empirical test of the model finds strong support for the links between perceived security and Perceived Usefulness (PU) and Perceived Ease Of Use (PEOU), reliability and PU and PEOU, between PEOU and satisfaction and finally between satisfaction and loyalty. The study finally provides both theoretical and practical contributions, outlines the main limitations of the study and gives id…
Trust enhancement of P2PSIP communication systems
2011
Today, peer-to-peer (P2P) session initiation protocol (SIP)-based communication systems have attracted much attention from both academia and industry. The decentralised nature of P2P might provide the distributed P2P communication system without help of the traditional SIP server. However, it comes to the cost of reduced trustworthiness and may cause security problems, e.g., privacy leaks, unpredictable availability, etc. In this paper, we investigate P2PSIP security issues and propose a subjective logic-based trust model that offers trust-based security services during P2PSIP session establishment. The main issues considered in this model include opinion calculation, opinion maintenance, d…
Further Developments and Tests of a Progressive Algorithm for Multiple Criteria Decision Making
1993
P. Korhonen, H. Moskowitz, and J. Wallenius (1986) developed a progressive algorithm and the supporting theory for modeling and solving multiple criteria decision problems with discrete alternatives. A special feature of the algorithm is that it relaxes the usual assumption of a fixed set of available decision alternatives and complete knowledge of a decision maker's (DM's) preference structure or value function. The algorithm is based on progressively sampling the decision space, obtaining preference information from the DM, determining the likelihood of finding possibly/surely better alternatives, and based on this information, continuing the search or terminating it by making the final …