We investigate architectural properties required for supporting automatic service composition. First, composable service architecture will be described, based on modeling Web services as abstract machines supported by formally defined composition operators. Based on the proposed infrastructure we give several options for achieving automatic service composition by treating it as a search problem...

With the increase of power of the local authorities, especially with regards to movement of urban goods, we decided to focus on the manner in which local authorities in the area of Brittany planned the implementation of regulations and infrastructure. This research studies nine towns in Brittany, namely: Rennes, Saint-Malo, Saint-Brieuc, Lannion, Morlaix, Brest, Quimper, Lorient and Vannes. It ...

We developed an information delivery system, namely WIDE (Wireless Information Delivery Environment), in client-server architecture using 802.11b infrastructure. WIDE aims to deliver popular information services to registered mobile clients in WLAN hot spots. We present the proposed system architecture, related delivery mechanism and communication protocols. We also give a brief overview of mec...

Smarter cities can be achieved by leveraging already available infrastructure such as Open Government Data and deployed sensor networks in cities, and, very importantly, citizens’ participation through apps in their smartphones. This work contributes a platform, namely IES CITIES, with a two-fold aim: a) to facilitate the generation of citizen-centric apps that exploit urban data in different d...

This paper empirically assesses United States direct investment in the European Union. In that respect, market size, growth rate, labor costs, export flows and tariff barriers have already been shown to influence U.S. foreign direct investment in the European Union. The present paper enlarges the field of knowledge on the matter by: (i) exploring the impact of two locational determinants of for...

This paper presents an overview of the healthcare systems in Southeast Asia, with a focus on the healthcare informatics development and deployment in seven countries, namely, Singapore, Cambodia, Malaysia, Thailand, Laos, the Philippines and Vietnam. Brief geographic and demographic information is provided for each country, followed by a historical review of the national strategies for healthca...

The paper discusses two main principles of human-centered information systems design − namely, the integration of space and time at a fundamental operating system level. These principles will allow all applications to use the notions of time and space in their designs and will give humans a working environment that is more familiar. A research project based on these principles is described and ...

We define hybrid multi-party computation (HMPC) and hybrid broadcast (HBC) in a model without broadcast channels but assuming a signature scheme and a respective public-key infrastructure (PKI) among the players. The goal is to achieve unconditional (PKIand signature-independent) security up to a certain threshold, and security beyond this threshold under stronger assumptions, namely, that forg...

The emerging HetNet is asking for new network deployment and management methods with flexibility to handle dynamic user demands and diverse radio environments in a tired RAN infrastructure. In this Brief, we present a new framework in the study of HetNet, namely as cognitive cellular network management (CCN), by applying cognitive radio techniques. As shown in Fig. 2.1, CCN are built upon four ...