Response time is one of the critical web service quality dimensions. It refers to how long it takes that a web service responds to request of a user. In order to manage the response time, pricing schemes can work as an efficient access control mechanism. In this paper, we study competition between two providers offering functionally same web services where there is a monopoly service provider...

BACKGROUND/AIM Water-pipe smoking (WPS) has acquired worldwide popularity, and is disseminating particularly rapidly in Europe and North America. However, little is known about the short-term cardiovascular effects of WPS. METHODS Presently, we assessed the short-term cardiovascular effects of nose-only exposure to mainstream WPS in BALB/c mice for 30 min/day for 5 consecutive days. Control m...

Authorization and access control in Web services is complicated by the unique requirements of the dynamic Web services paradigm. Amongst them is the requirement for a context-aware access control specification and a processing model to apply fine-grained access control on various components of a Web service. In this paper, we address these two requirements and present a policy-based authorizati...

Due to the advancements in smart mobile phone's capabilities, web technologies and wireless technologies, it is changing the role of mobile devices as a web service consumer to a web service provider. The future of mobile web service provisioning is more exciting because day by day Smartphone users are increasing. In future it is called as Mobile Ubiquitous computing because the smart phone pro...

Environmental Science and Geography Program, University of Alaska Southeast, 11120 Glacier Highway, Juneau, AK 99801, USA (SP) United States Department of Agriculture Forest Service, Pacific Northwest Research Station, Forestry and Range Sciences Laboratory, 1401 Gekeler Lane, La Grande, OR 97850, USA (WPS) Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK 99775,...

Spatial data conflation is a key task for consolidating geographic knowledge from different data sources covering overlapping regions that were gathered using different methodologies and objectives. Nowadays this research area is becoming more challenging because of the increasing size and number of overlapping spatial data sets being produced. This paper presents an approach towards distribute...

Basic message processing tasks, such as well-formedness checking and grammar validation, common in Web servicemessaging, can be off-loaded from the service providers’ own infrastructures. The traditional ways to alleviate the overhead caused by these tasks is to use firewalls and gateways. However, these single processing point solutions do not scale well. To enable effective off-loading of com...

Following the Service-oriented Architecture (SOA) paradigm shown in Figure 1, service providers register services and corresponding descriptions in registries. Service consumers can then find services in the registry, bind to the services that best fit their needs, and finally execute them. Web services (Weerawarana, Curbera, Leymann, Storey, & Ferguson, 2005) are one widely adopted realization...

To distinguish between human user and computer program to enhance security, a popular test called CAPTCHA is used on Web. CAPTCHA has an important role in preventing Denial Of Service (DOS) attacks in computer networks. There are many different types of CAPTCHA in different languages. Due to the expansion of Persian-language and documents on internet, creating a suitable Persian CAPTCHA seems t...