Spectral characterization of the hydrogen like atoms confined by oscillating systems

The spectral characterization of Coulomb systems confined by the homogeneous pseudo-Gaussian oscillator is investigated. This is made using the efficient computational method of generating functional. Also, the method is used for the spectral characterization of homogeneous harmonic oscillator confinement, found as a particular case of pseudo-Gaussian oscillator confinement. Finally the aspect of confinement with an impenetrable sphere of finite radius is considered by studying its conjugate effect along with harmonic oscillator upon the atom

Gorenstein flat dimension of complexes

We define a notion of Gorenstein flat dimension for unbounded complexes over left GF-closed rings. Over Gorenstein rings we introduce a notion of Gorenstein cohomology for complexes; we also define a generalized Tate cohomology for complexes over Gorenstein rings, and we show that there is a close connection between the absolute, the Gorenstein and the generalized Tate cohomology.Comment: to appear in J. Math. Kyoto Uni

Gorenstein injective envelopes and covers over two sided noetherian rings

We prove that the class of Gorenstein injective modules is both enveloping and covering over a two sided noetherian ring such that the character modules of Gorenstein injective modules are Gorenstein flat. In the second part of the paper we consider the connection between the Gorenstein injective modules and the strongly cotorsion modules. We prove that when the ring R is commutative noetherian of finite Krull dimension, the class of Gorenstein injective modules coincides with that of strongly cotorsion modules if and only if the ring R is in fact Gorenstein

Contributions to understandingtoday's role of highly qualified commerce personnel

This paper is a contribution at raising awareness of the fact that the commercial activity, consisting primarily in buying and selling, has become so complex and from another point of view, so important for companies in their struggling for market share, that it cannot be anymore performed with satisfactory results without professional education. The article insists on the necessity to define a profession of "commercial expert" requiring tertiary (or higher) education of specialty. The author do not underestimate the importance of the practical experience in defining the nature of the "commercial expertise", neither it neglects the role of complementary specialisations (technical, artistic, managerial and so on) depending on the exact position in terms of qualifications and sector of activity which is concerned. Finally, the article announce the necessity to define the commercial expert as one of the qualifications belonging to the national qualifications' framework, and to ensure that the core competencies are provided by higher education schools of commerce, as it is the case with more traditionally established professions, for instance pharmacist or architect.commercial activities, profession, education, qualification, occupational categories

EXTREME PROGRAMMING AND RATIONAL UNIFIED PROCESS – CONTRASTS OR SYNONYMS?

The agile movement has received much attention in software engineering recently. Established methodologies try to surf on the wave and present their methodologies a being agile, among those Rational Unified Process (RUP). In order to evaluate the statements we evaluate the RUP against eXtreme Programming (XP) to find out to what extent they are similar end where they are different. We use a qualitative approach, utilizing a framework for comparison. RUP is a top-down solution and XP is a bottom-up approach. Which of the two is really best in different situations has to be investigated in new empirical studies.extreme programming

CHARACTERISTICS AND EVALUATION METHODS OF THE CASE TOOLS

The acronym CASE – Computer Assisted Software Engineering – is the term used to indicate a collection of methods, tools and processes used in the development of software products with the assistance of the computer.IPSE