Model view management with triple graph transformation systems

The final publication is available at Springer via http://dx.doi.org/10.1007/11841883_25Proceedings of Third International Conference, ICGT 2006 Natal, Rio Grande do Norte, Brazil, September 17-23, 2006In this paper, we present our approach for model view management in the context of Multi-View Visual Languages (MVVLs). These are made of a number of diagram types (or viewpoints) that can be used for the specification of the different aspects of a system. Therefore, the user can build different system views conform to the viewpoints, which are merged in a repository in order to perform consistency checking. In addition, the user can define derived views by means of graph query patterns in order to extract information from a base model (a system view or the repository). We have provided automatic mechanisms to keep synchronized the base model and the derived view when the former changes. Predefined queries by the MVVL designer result in so-called audience-oriented views. Finally, semantic views are used for analysing the system by its translation into a semantic domain. Our approach is based on meta-modelling to describe the syntax of the MVVL and each viewpoint, and on triple graph transformation systems to synchronize and maintain correspondences between the system views and the repository, as well as between the derived, audience-oriented and semantic views and the base models. We illustrate these concepts by means of an example in the domain of security for web systems.This work has been sponsored by the Spanish Ministry of Science and Education, projects TSI2005-08225-C07-06 and TSI2004-03394

Mental and Social Health Impacts the Use of Protective Behavioral Strategies in Reducing Risky Drinking and Alcohol Consequences

The present study is the first to examine the moderating effects of mental and social health status in the relationship between protective behavioral strategies utilized to reduce high risk drinking (e.g., alternating alcoholic and nonalcoholic drinks or avoiding drinking games) and alcohol outcomes (drinking variables and alcohol-related negative consequences) among first-year college females (N = 128). Findings revealed that protective behaviors were particularly effective in reducing both alcohol consumption and related risks among participants reporting lower mental health as compared to higher mental health. Further, participants with higher social health who utilized protective behaviors consumed significantly fewer maximum drinks per occasion than did peers who also employed protective behaviors but reported lower social health. Explanation of findings and implications for campus intervention initiatives are discussed

The differential impact of relational health on alcohol consumption and consequences in first year college women

The Relational Health Indices (RHI) is a relatively new measure that assesses the strength of relationships. It has been found that relational health has a protective factor for women, such that it enhances positive experiences and limits negative ones. The current study is the first to use the RHI to examine the effect of relational health on alcohol consumption and alcohol consequences. First year college women were given questionnaires assessing relational health, drinking motives, and alcohol use in their first few months at a mid-sized, private university. Due to the social nature of college settings, it was predicted that relational health would moderate the relationship between motives and alcohol consumption. Further, due to the protective factor of relational health, it was predicted that relational health would attenuate the relationship between drinking and negative consequences. These hypotheses were supported. Relational health, moderated the relationship between both social and coping drinking motives and drinking, such that women with strong relational health towards their peers and community who also had high social and coping motives, drank more than those with weaker relationships. Paradoxically, relational health also moderated the relationship between drinking and consequences such that heavy drinking women with strong relational health experienced fewer negative consequences than women with weaker relational health. Results indicate that although relational health is associated with an increase in alcohol consumption, it may also serve as a protective factor for alcohol-related negative consequences. Future research and interventions may seek to de-link the relational health-drinking connection in the college student environment

The iTEC Technical Artefacts, Architecture and Educational Cloud

This chapter introduces the technical artefacts of the iTEC project in the context of a cloud architecture. The rationale for the technology developed in the iTEC project follows from its overall aim to re-engineer the uptake of ICT in schools. To that end, iTEC focused (a) on some important barriers for the uptake of ICT such the effort that teachers must make in redesigning their teaching and fi nding the right resources for that, and (b) on enablers for the uptake of ICT, such as providing engaging experiences both for the learner and teacher. The technical innovations are centred around three themes: innovations in the support of learning design, innovations by using a-typical resources, and innovations in the integration and management of learning services and resources. Next this chapter presents the cloud architecture adopted by all technology providers, including a shared user management and control system, the shared data models and interoperability solutions. The technical artefacts and then further elaborated in the ensuing chapters

RALph: A Graphical Notation for Resource Assignments in Business Processes

The business process (BP) resource perspective deals with the management of human as well as non-human resources throughout the process lifecycle. Although it has received increasing attention recently, there exists no graphical notation for it up until now that is both expressive enough to cover well-known resource selection conditions and independent of the BP modelling language. In this paper, we introduce RALph, a graphical notation for the assignment of human resources to BP activities. We define its semantics by mapping this notation to a language that has been formally defined in description logics, which enables its automated analysis. Although we show how RALph can be seamlessly integrated with BPMN, it is noteworthy that the notation is independent of the BP modelling language. Altogether, RALph will foster the visual modelling of the resource perspective in BP

Composing Trust Models towards Interoperable Trust Management

Part 2: Full PapersInternational audienceComputational trust is a central paradigm in today's Internet as our modern society is increasingly relying upon online transactions and social net- works. This is indeed leading to the introduction of various trust management systems and associated trust models, which are customized according to their target applications. However, the heterogeneity of trust models prevents exploiting the trust knowledge acquired in one context in another context although this would be beneficial for the digital, ever-connected environment. This is such an issue that this paper addresses by introducing an approach to achieve interoperability between heterogeneous trust management systems. Specifically, we define a trust meta-model that allows the rigorous specification of trust models as well as their composition. The resulting composite trust models enable heterogeneous trust management systems to interoperate transparently through mediators

ChemBank: a small-molecule screening and cheminformatics resource database

ChemBank (http://chembank.broad.harvard.edu/) is a public, web-based informatics environment developed through a collaboration between the Chemical Biology Program and Platform at the Broad Institute of Harvard and MIT. This knowledge environment includes freely available data derived from small molecules and small-molecule screens and resources for studying these data. ChemBank is unique among small-molecule databases in its dedication to the storage of raw screening data, its rigorous definition of screening experiments in terms of statistical hypothesis testing, and its metadata-based organization of screening experiments into projects involving collections of related assays. ChemBank stores an increasingly varied set of measurements derived from cells and other biological assay systems treated with small molecules. Analysis tools are available and are continuously being developed that allow the relationships between small molecules, cell measurements, and cell states to be studied. Currently, ChemBank stores information on hundreds of thousands of small molecules and hundreds of biomedically relevant assays that have been performed at the Broad Institute by collaborators from the worldwide research community. The goal of ChemBank is to provide life scientists unfettered access to biomedically relevant data and tools heretofore available primarily in the private sector

Fog computing security: a review of current applications and security solutions

Fog computing is a new paradigm that extends the Cloud platform model by providing computing resources on the edges of a network. It can be described as a cloud-like platform having similar data, computation, storage and application services, but is fundamentally different in that it is decentralized. In addition, Fog systems are capable of processing large amounts of data locally, operate on-premise, are fully portable, and can be installed on heterogeneous hardware. These features make the Fog platform highly suitable for time and location-sensitive applications. For example, Internet of Things (IoT) devices are required to quickly process a large amount of data. This wide range of functionality driven applications intensifies many security issues regarding data, virtualization, segregation, network, malware and monitoring. This paper surveys existing literature on Fog computing applications to identify common security gaps. Similar technologies like Edge computing, Cloudlets and Micro-data centres have also been included to provide a holistic review process. The majority of Fog applications are motivated by the desire for functionality and end-user requirements, while the security aspects are often ignored or considered as an afterthought. This paper also determines the impact of those security issues and possible solutions, providing future security-relevant directions to those responsible for designing, developing, and maintaining Fog systems

Nonsilicate minerals

vii, 237 p. : 1 ill. ; 26 cm.Includes bibliographical references (p. 236-237) and index."Palache, Berman, and Frondel published two volumes of the seventh edition of James Dwight Dana's System of Mineralogy in 1944 and 1951. As with the sixth edition published in 1892, the seventh edition soon became the recognized authority in mineralogy. Greatly improved analytical techniques, crystal structure analysis, and other new technologies have led to a great increase in the number of new species and to the improvement of the data for older species. Over 400 new nonsilicate species have been approved by the International Mineralogical Association's Commission on New Minerals and Mineral Names in the last eight years. For comparison, the seventh edition of Dana's System assigned classification numbers to 1043 accepted species, and briefly described another 227 poorly defined species. Of this total 69 have been discredited and 158 have been redefined. There have been over 1200 new nonsilicate species described in the last 30 years, and the growth continues. Obviously, with the number of nonsilicate species more than doubled since 1951, an updated classification is required. The preparation of this volume began in 1977, when a revised classification of the known phosphate, arsenate and vanadate minerals was prepared and privately circulated. This wa received favorably, so a revised classification of all nonsilicate minerals was undertaken; the results are given here"--P. v