Applying model-driven engineering to the development of Rich Internet Applications for Business Intelligence

Business Intelligence (BI) applications have been gradually ported to the Web in search of a global platform for the consumption and publication of data and services. On the Internet, apart from techniques for data/knowledge management, BI Web applications need interfaces with a high level of interoperability (similar to the traditional desktop interfaces) for the visualisation of data/knowledge. In some cases, this has been provided by Rich Internet Applications (RIA). The development of these BI RIAs is a process traditionally performed manually and, given the complexity of the final application, it is a process which might be prone to errors. The application of model-driven engineering techniques can reduce the cost of development and maintenance (in terms of time and resources) of these applications, as they demonstrated by other types of Web applications. In the light of these issues, the paper introduces the Sm4RIA-B methodology, i.e., a model-driven methodology for the development of RIA as BI Web applications. In order to overcome the limitations of RIA regarding knowledge management from the Web, this paper also presents a new RIA platform for BI, called RI@BI, which extends the functionalities of traditional RIAs by means of Semantic Web technologies and B2B techniques. Finally, we evaluate the whole approach on a case study—the development of a social network site for an enterprise project manager.

On the origin of the high capacitance of nitrogen-containing carbon nanotubes in acidic and alkaline electrolytes

The synthesis of nitrogenated carbon nanotubes (N-CNTs) with up to 6.1 wt% N, via the use of pyridine as the nitrogen containing carbon precursor, can provide a facile route to significantly enhance the low intrinsic specific capacitance of carbon nanotubes. The nitrogen functionalities determine this, at least, five-fold increase of the specific capacitance.

Reliability and Validity Evidence of Scores on the French Version of the Questionnaire about Interpersonal Difficulties for Adolescents

This study examined the reliability and validity evidence drawn from the scores of the French version of the Questionnaire about Interpersonal Difficulties for Adolescents (QIDA) in a sample of 957 adolescents (48.5% boys) ranging in age from 11 to 18 years (M = 14.48, SD = 1.85). A principal axis factoring (PAF) and confirmatory factor analyses (CFA) were performed to determine the fit of the factor structure of scores on the QIDA. PAF and CFA replicated the previously identified correlated five-factor structure of the QIDA: Assertiveness, Heterosexual Relationships, Public Speaking, Family Relationships, and Close Friendships. The QIDA yielded acceptable reliability scores for French adolescents. Validity evidence of QIDA was also established through correlations with scores on the School Anxiety Inventory and the Social Anxiety Scale for Adolescents. Most of the correlations were positive and exceeded the established criteria of statistical significance, but the magnitude of these varied according to the scales of the QIDA. Results supported the reliability and validity evidence drawn from the scores of the French version of the QIDA.

Influence of Incidence Angle on the Coherent Copolar Polarimetric Response of Rice at X-Band

The coherent nature of the acquisition by TerraSAR-X of both copolar channels (HH and VV) enables the generation of many different polarimetric observables with physical interpretation, as have recently been used for monitoring rice fields. In this letter, the influence of incidence angle upon these polarimetric observables is analyzed by comparing three stacks of images that were acquired simultaneously at different incidence angles (22°, 30°, and 40°) during a whole cultivation campaign. We show that the response of observables related to dominance (entropy, ratios of components) and type of scattering mechanisms (alpha angles) is not greatly influenced by incidence angle at some stages: early and advanced vegetative phases, and maturation. Moreover, the acquisition geometry drives the sensitivity to the presence of the initial stems and tillers, being detected earlier at shallower angles. This analysis is a necessary step before studying potential methodologies for combining different orbits and beams for reducing the time between acquisitions for monitoring purposes.

New hybrid materials based on the grafting of Pd(II)-amino complexes on the graphitic surface of AC: preparation, structures and catalytic properties

A novel procedure for the preparation of solid Pd(II)-based catalysts consisting of the anchorage of designed Pd(II)-complexes on an activated carbon (AC) surface is reported. Two molecules of the Ar–S–F type (where Ar is a plane-pyrimidine moiety, F a Pd(II)-ligand and S an aliphatic linker) differing in F, were grafted on AC by π–π stacking of the Ar moiety and the graphene planes of the AC, thus favouring the retaining of the metal-complexing ability of F. Adsorption of Pd(II) by the AC/Ar–S–F hybrids occurs via Pd(II)-complexation by F. After deep characterization, the catalytic activities of the AC/Ar–S–F/Pd(II) hybrids on the hydrogenation of 1-octene in methanol as a catalytic test were evaluated. 100% conversion to n-octane at T = 323.1 K and P = 15 bar, was obtained with both catalysts and most of Pd(II) was reduced to Pd(0) nanoparticles, which remained on the AC surface. Reusing the catalysts in three additional cycles reveals that the catalyst bearing the F ligand with a larger Pd-complexing ability showed no loss of activity (100% conversion to n-octane) which is assigned to its larger structural stability. The catalyst with the weaker F ligand underwent a progressive loss of activity (from 100% to 79% in four cycles), due to the constant aggregation of the Pd(0) nanoparticles. Milder conditions, T = 303.1 K and P = 1.5 bar, prevent the aggregation of the Pd(0) nanoparticles in this catalyst allowing the retention of the high catalytic efficiency (100% conversion) in four reaction cycles.

The puzzle in the bits: Cybersecurity, digital warfare and the future of Internet governance. CEPS Commentary, 26 June 2013

CEPS Senior Research Fellow Andrea Renda persuasively shows in this new CEPS Commentary the extent to which the global economy has become heavily reliant on the Internet, but observes that this phenomenon is becoming increasingly insidious. It is efficient, no doubt: but he asks whether it is also secure?

Reflections on quasi-loss of nationality in comparative, international and European perspective. CEPS Liberty and Security in Europe No. 66/August 2014

This paper focuses on situations in which a person is said never to have had the nationality of a country, even though (s)he assumed (and in many cases the authorities of the country concerned shared that assumption) that (s)he possessed that nationality. Contrary to situations of loss of nationality, where something is taken away that had existed, quasi-loss involves situations in which nationality was never acquired. This contribution seeks to examine whether a person should under certain circumstances be protected against quasi-loss of nationality. In order to do so, the paper first maps out situations of quasi-loss in EU member states, describing typical cases in which a person never acquired the nationality of the country, although (s)he was at some time considered as a national. Drawing on this taxonomy, the paper attempts to uncover whether national, European and international laws offer some protection, and if yes, to which extent, for situations of quasi-loss. It concludes with outlining best practices which Member States should comply with in handling such situations.

General Principles of EU Law: The Ghost in the Platonic Heaven in Need of Conceptual Clarification. Pittsburgh Papers on the European Union Vol. 2, 2013

General principles are en vogue in EU law – and in need of conceptual clarification. A closer look at several concepts of principle in legal philosophy and legal theory sheds light upon the concept of general principles in EU law. A distinction between an aprioristic model of principle and a model of principle informed by legal positivism may contribute to clarifying the genesis of a (general) principle in EU law, as well as its nature and functions. This paper demonstrates that an evolution has taken place from a reliance on seemingly natural law inspired reflections of general principles via the desperate search to ground general principles in various kinds of sources based on a more or less sound methodology towards an increasing reliance on strictly positivistic approaches. Against this backdrop, general principles are likely to lose significance where there are other norms while retaining an important yet uncontrollable role where the traditional canon of sources is silent.

The internet in Russia: the cradle of civil society. OSW Commentary No. 72, 2012-03-21

In the last decade, along with economic and technological growth, Russia has seen a dynamic development of the internet. Today the net is an everyday tool of work, information and entertainment for 40% of Russians – the most educated, active and affluent part of the society. The spread of the internet (known in Russia as the Runet) has, in turn, brought about significant political and social consequences. With the political and social sphere in Russia strictly controlled by the government, most of this activity has moved to cyberspace. The internet has become an alternative to the state-controlled media, a site for the free exchange of views and a home to numerous social initiatives. In this way, it has become a school of citizenship for Russians, and a kind of ‘test tube’ that has spawned social and political activity. This activity went beyond cyberspace in the election period in 2011/2012, and turned into massive street protests. The potential of the internet has also been used by the Russian government, both to shape public opinion (via loyal online media) and to monitor civil initiatives, especially opposition ones. The state has many instruments of technical control and supervision of the internet and its users’ activity. This control was used in the election period 2011/2012, when selected sites were blocked and pressure exerted on independent websites. These actions were a warning sign from the government, aimed at discouraging internet users from any opposition activity. However, it does not seem feasible that any restriction of such activity can be effective. The scale of this activity is now enormous, and attempts to censor the net and resorting to repression against internet users on a wider scale would only fuel resentment towards the government.

New Europeans, New Identities; Reflections on Europe’s Dilemma. IES WORKING PAPER 1/2008

This paper examines issues relating to the integration of immigrants, particularly Muslim immigrants, into European societies. It first contemplates whether a true European identity really exists. Building on the different conceptions of (European) identity, the paper claims that a sense of belonging is crucial in helping immigrants integrate into Europe. The paper also argues that identity is, actually, most relevant when it is under threat. The paper therefore looks at the nature of Muslim society in Europe and some of the reasons for disaffection in that population. While doing this, the paper compares the various models of integration in, for example, the United States, Canada and Israel with the attempt by a number of EU Member States to find satisfactory integration strategies. Also, the efforts of the European Commission to forge an acceptable integration framework through the principles elaborated following the Hague declaration in November 2004 are discussed. The paper concludes that integration is best approached by creating cohesive communities and loyalties at the local level.