On the stack of semistable GG-bundles over an elliptic curve

In a recent paper Ben-Zvi and Nadler proved that the induction map from $B$-bundles of degree 0 to semistable $G$-bundles of degree 0 over an elliptic curve is a small map with Galois group isomorphic to the Weyl group of $G$. We generalize their result to all connected components of \Bun_G for an arbitrary reductive group $G$. We prove that for every degree (i.e. topological type) there exists a unique parabolic subgroup such that any semistable $G$\nobreakdash-bundle of this degree has a reduction to it and moreover the induction map is small with Galois group the relative Weyl group of the Levi. This provides new examples of simple automorphic sheaves which are constituents of Eisenstein sheaves for the trivial local system.Comment: 19 pages; contains one table; more typos corrected; there was a gap in the proof (a subsection was added to repair that); added a few references and some remarks about the slope map; comments are welcomed

Evaluation of ICT Investments toward an Increased Competitiveness

This paper focus on the analysis of the impact of investments in IT industry in the general frame of globalization and the drafting of a model for evaluation so that to address the subject of the theoretization of possible measures and efforts in strategic resource consumption for growing of IT competitiveness. To reap the gains from globalization it is necessary to undergo a process of adjustment as factors of production – such as investment capital – towards the ITC applications. The extent by which e-Government will make a difference and add value is seen as dependent on three factors: strong leadership, management of the ‘digital divide’, and well managed innovation.ITC; e-government; investments; digital divide; Internet.

The composite indicators used in assessing innovation at national level

The purpose of present paper is to present some recent developments in constructing composite innovation (or even, science and technology S&T) indicators on a national level. Measuring innovation at the national level is crucial in developing appropriate long term strategies for economic growth, because it is widely believed technological innovation is one of the main drivers of sustained economic-social welfare, if not the single most important driver of economic growth. Our purpose is to present a mapping exercise of metrics – based on composite indicators - found in the STI literature, pointing out those used in practice, with a view to corresponding values in the case of Romania. It has become standard practice to combine several indicators for science, technology, and innovation to form composite numbers. Composite indicators are increasingly being used to make cross-national comparisons of country performance in specified areas such as competitiveness, globalisation, innovation, etc.Innovation, innovation metrics, Science and Technology indicators, composite indicators, National Innovation Systems, Scoreboards.

Stochastic post-processing calculation of iron losses – application to a PMSM

To take account of the uncertainties introduced on the magnetic properties during the manufacturing process, the present work aims to focus on the stochastic modelling of iron losses in electrical machine stators. The investigated samples are composed of 28 slinky stators, coming from the same production chain. The stochastic modelling approach is first described. Thereafter, the Monte-Carlo sampling method is used to calculate, in post-processing, the iron loss density in a PMSM that is modelled by the finite element method. The interest of such an approach is emphasized by calculating the main statistical characteristics associated to the losses variability, which are Gaussian distributed for A and O formulations. The originality of the approach is due to the fact that the global influence of the manufacturing process (cutting, assembly, …) on magnetic properties of the considered samples is taken into account in the way of computing the iron losses.This work is supported by the program MEDEE (Nord Pas-de-Calais Region, France

The Business Intelligence and the Better Decisions in Management

The paper intends to present more reasons in the favour of promoting the business intelligence (BI) in the managerial practice. Business intelligence is an umbrella term that encompasses the processes, tools, and technologies required to turn data into information, and information into knowledge and plans that drive effective business activity. BI encompasses data warehousing technologies and processes on the back end, and query, reporting, analysis, and information delivery tools (that is, BI tools) and processes on the front end. Organizations need to increase their focus on decision-making. In particular, they need to think again about the relationship between information and decision-making. Business intelligence and its predecessor concepts decision support, executive information systems, have been circulating for several decades in business.business intelligence, decisions, management.

INTERNET ETHICS

In our age, Internet is the biggest information network in the world; it consists of a set of heterogeneous networks from over 100 countries displaying huge amounts of virtual resources; it provides facilities such as email, file transmission protocol (ftp), workgroups discussion or chat, information and dissemination of information (www – world wide web). Internet has a major impact over all activity fields: political, social, economic and private life of users, as well. Newly developed, models of on-line business are a basic element in economic growth of a company. Taking into account the specificity of access on the Internet, it is necessary to establish/create/set and respect clear principles and rules to access the virtual business environment. These are created by specialized organizations or even developed in internal frame of the companies. Using these rules, acceptable activities and unacceptable activities (for a potential user of Internet) are defined. In the time that ethics defines a concept related to the adequate conduct of a person in the social environment, we can speak about business ethics, especially business on-line ethics. Ethics appears in relation among persons or in relation between persons and computers. Ethics is in business environment, in this case, virtual environment, but to the workplace, too. Managers have major responsibility to set, implement and respect some ethical systems within the company and to be an example in this sense.Internet, Ethics, Internet Acceptable Use policies-IAU, acceptable activities, unacceptable activities, business on-line, guidelines for business on-line

Benchmarking and Performance Management

The relevance of the chosen topic is explained by the meaning of the firm efficiency concept - the firm efficiency means the revealed performance (how well the firm performs in the actual market environment) given the basic characteristics of the firms and their markets that are expected to drive their profitability (firm size, market power etc.). This complex and relative performance could be due to such things as product innovation, management quality, work organization, some other factors can be a cause even if they are not directly observed by the researcher. The critical need for the management individuals/group to continuously improve their firm/company’s efficiency and effectiveness, the need for the managers to know which are the success factors and the competitiveness determinants determine consequently, what performance measures are most critical in determining their firm’s overall success. Benchmarking, when done properly, can accurately identify both successful companies and the underlying reasons for their success. Innovation and benchmarking firm level performance are critical interdependent activities. Firm level variables, used to infer performance, are often interdependent due to operational reasons. Hence, the managers need to take the dependencies among these variables into account when forecasting and benchmarking performance. This paper studies firm level performance using financial ratio and other type of profitability measures. It uses econometric models to describe and then propose a method to forecast and benchmark performance.benchmarking, competitiveness, innovation, indicators.

Cusp Eigenforms and the Hall Algebra of an Elliptic Curve

We give an explicit construction of the cusp eigenforms on an elliptic curve defined over a finite field using the theory of Hall algebras and the Langlands correspondence for function fields and \GL_n. As a consequence we obtain a description of the Hall algebra of an elliptic curve as an infinite tensor product of simpler algebras. We prove that all these algebras are specializations of a universal spherical Hall algebra (as defined and studied in \cite{BS} and \cite{SV1})

Corporate Social Responsibility and its Macroeconomic Implications

One of main concern of policy makers is pollution and hence the improvement of the environmental quality. The implementation of environment policies aims at improving life and product quality in order to replace those obtained by high polluting processes by less polluting ones. Countries having more strict environmental regulations are likely to suffer from a significant increase of their production costs. As a consequence these countries become less competitive on the international market and may lose their market share. In this context, an increasing attention was granted to the impact of environment policies on foreign trade. Our purpose in this paper is to investigate whether Corporate social responsibility introduced into Eastern European countries have led or not to a decline of exports towards the European Union (EU), and if so how much? This question is important since it is related to the preoccupation of EU new members to increase their exports and the quality of their products. Our econometric methodology based on recent developments of panel data techniques allow us to control for unobservable heterogeneity and hence to get robust empirical robust. Our results highlight a moderated impact of environmental regulations on foreign trade.environmental regulations; trade policy; gravity equation; competitiveness.