Many recent trends in mobile web and context aware applications are leading to consider new applicative scenario including the so called smart services which are characterized by the use of autonomous devices connected to internet (sensors, beacons, etc.) cooperating with user personal mobile devices (tablet, smartphone, etc.). In this work we describe a conceptual framework, called STREET (Sensor network "on The Road " for EnhancEd internet of Touristic things) WEB, aimed to support mobile users moving in smart scenarios (e.g smart tourism) with the aim to combine context aware information and high quality geo marketing services in the same web infrastructure enhanced with sensors. STREET WEB makes possible to implement smart services (smart museum, etc.) in an easy way by integrating micro servers, distributed in the scenario (servers on the road), called smart boxes, working as a geo based Cloud system in an autonomous way, as a Distributed Local Storage system, without remote internet access.

The aim of the 5th edition of COPECH (Collaboration tools for preservation of Environment and Cultural Heritage) is to bring together practitioners, engineers, scientists and researchers to give an innovative smart profile, addressing the concept of innovation for experimenting and validating cultural heritage services mixing different technologies and socio-economic strategies. This report gives a brief description of the papers accepted at the conference.

Collaborative working environments consist of a network of spatially dispersed actors (either humans or not) that play different roles and cooperate to achieve a common goal. Notwithstanding the ever increasing potential of innovative software and network technologies, collaborative working environments still require advanced solutions to effectively managing their inherent complexity, thereby boosting productivity and creativity. Essential components of innovative service-based collaborative working environments are collaboration-aware services that embed the required point-to-point or multi-point interaction patterns to support the flexible orchestration of distributed and concurrent activities. This paper introduces an approach that attempts to overcome the above mentioned drawbacks of current collaborative working environments by exploiting the precepts recently introduced by model-driven development and MDA (model driven architecture). The proposed approach is guided by a model transformation framework that makes use of the set of MDA-related standards (MOF, QVT and XMI) to obtain a high degree of automation, so that interoperable model transformation services can be implemented in a timely and efficient way. At the end, the single tool usually operated by a given worker can be considered as a virtual collaborative platform for creating and automatically transforming models of different types and at various levels of abstraction.

This work suggests a search tool, MyWISH 3.0, as a solution for common web search results visualization limits. This tool unifies performance standards of a stable tool with the advanced visualization ability of a Java-based, highly configurable component. The data flow of these two modules ends up in an XML interface. Moreover, because of its accurate caching techniques and its set-limited activities tracking, the tool aims to be used by communities sharing the same research objectives, making them manage various contents in a easier way. The paper starts with an overview about literature concerning visualization tools, trying to highlight present features and to suggest the deployment of some aspects. Then, it presents a test-case verified and validated implementation within a web search limited background, like a scientific community looking for information concerning European funding.

In this paper, we present a recently funded European research project, namely WORKPAD, that aims at designing and developing an innovative software infrastructure (software, models, services, etc.) for supporting collaborative work of human operators in emergency/disaster scenarios. In such scenarios, different teams, belonging to different organizations, need to collaborate with one other to reach a common goal; each team member is equipped with handheld devices (PDAs) and communication technologies, and should carry on specific tasks. In such a case we can consider the whole team as carrying on a process, and the different teams (of the different organizations) collaborate through the "interleaving" of all the different processes (macro-process). Each team is supported by some back-end centre, and the different centres need to cooperate at an inter-organizational level to reach an effective coordination among teams. The project investigates a 2-level framework for such scenarios: a back-end peer-to-peer community, providing advanced services requiring high computational power, data & knowledge & content integration, and a set of front-end peer-to-peer communities, that provide services to human workers, mainly by adaptively enacting processes on mobile ad-hoc networks

Web search process can be time consuming and frustrating due to the enormous amount of information available on the Web. Recently, Web spiders with information extraction techniques that analyze retrieved documents have been proposed. This leads to an extended search process in which hypertext structure is enriched with semantic annotations. As consequence graph visualization techniques must be up-to-date for a better understanding of modified results. In particular additional semantic information must be taken into account without forcing the user browsing through unnecessary documents. As a first attempt towards graph visualization for semantic crawling, in this work we describe an example of XML-based visualisation system that provides a semantic visualization by means of dynamic fields that are associated to each node.

Website maps are becoming one of the most important applications of graph drawing and information visualization techniques. However, the user has often struggled with web graphs returned from web search agents. To efficiently manage the visualization of these graphs it also occurs to take advantage from the flexibility of XML language. GraphXML format is a standard proposed for the information visualization of generic graphs. In this work, we focus on query graphs in. the sense of web graphs that are the semantics of WebSQL query language. In particular, we give a GraphXML description of query graphs in a way that visual properties like colouring scheme for node relevance visualization ("hot pages") can be included. As application we show some example of query maps returned by our web search tool VSEARCH that are obtained in an easy way via a Javascript view program.

World Wide Web visualisation systems are widely used for browsing or viewing search engine results. In the case of a local Web search tool, however, the browsing paradigm is combined with a searching paradigm, thus requiring dynamic visualisation methods. We describe an example of a visualisation system that is an extension of a common JavaScript script that is used as a Web site map. It is interfaced with a Java-based local search tool named VSEARCH. Our system provides an easy-to-integrate mechanism to implement information visualisation techniques like node colouring.

Two issues in linear algebra algorithms for multicomputers are addressed. First, how to unify parallel implementations of the same algorithm in a decomposition-independent way. Second, how to optimize naive parallel programs maintaining the decomposition independence. Several matrix decompositions are viewed as instances of a more general allocation function called subcube matrix decomposition. By this meta-decomposition, a programming environment characterized by general primitives that allow one to design meta-algorithms independently of a particular decomposition. The authors apply such a framework to the parallel solution of dense matrices. This demonstrates that most of the existing algorithms can be derived by suitably setting the primitives used in the meta-algorithm. A further application of this programming style concerns the optimization of parallel algorithms. The idea to overlap communication and computation has been extended from 1-D decompositions to 2-D decompositions. Thus, a first attempt towards a decomposition-independent definition of such optimization strategies is provided.>

A system to query databases using diagrams as a standard user interface is proposed. The system, called Query by Diagram* (QBD*), makes use of a conceptual data model, a query language on this model, and a graphical user interface. The conceptual model is the entity-relationship model. The query language, whose expressive power allows recursive queries, supports visual interaction. The main characteristics of the interface are ease of use and the availability of a rich set of primitives for schema selection and query formulation. The expressive power of QBD* and G/sup +/, which are the only languages allowing recursive queries to be expressed graphically are compared.>