Solving the Coulomb Schrodinger Equation in d=2+1 via Sinc Collocation

We solve the non-relativistic Coulomb Shrodinger equation in d = 2+1 via sinc collocation. We get excellent convergence using a generalized sinc basis set in position space. Since convergence in position space could not be obtained with more common numerical techniques, this result helps to corroborate the conjecture that the use of a localized basis set within the context of light cone quantization can yield much better convergence. All of the computations presented here were performed on an IBM-compatible PC with an Intel 486DX2-66 microchip.Comment: 17 pages, Latex, 6 uuencoded postscript figures (figs.uu

Greek banks in the Balkan countries: conclusion derived from analysis of their balance sheets

During the 1990s the Greek economy has flourished, with the help of the banking system, which, at the same period, has undergone considerable deregulation. The stock market “explosion” at the end of the decade has provided the necessary funds for the expansion of many Greek Banks in various countries and particularly those of the Balkan area. Some Greek companies had already expanded their business activities in these countries, which at the time were in the process of transition to the market economy, thus giving to the Greek Banks the incentive to follow their clientele. The expansion of Greek banks in the Balkans was such that they obtained significant market shares in some of the area’s countries. In the current paper we make an effort to examine the feasibility of the expansion of Greek banks in these countries, focusing especially on their financial efficiency. To that end the Balance Sheets of the parent banks, as well as those of their Balkan subsidiaries and associate companies where they held an equity share were studied and analyzed. Our main conclusion is that the activities of the Geek banks in the area were successful and had positive effects to their profitability and they reinforced their overall financial state.Banking System, balance sheets, financial analysis, profitability, efficiency, Balkan area.

The Vicious Cycle of the Foreign Military Debt

This paper aims at estimating first the effects of defense spending on the main determinants of growth, and second the extent to and the channels through which the military debt of Greece influences the overall debt burden of the country, and consequently the critical determinants of economic growth and development. Increased imports of sophisticated weapons and military equipment can be financed at the cost of investment (guns v. ploughshares), or/and at the cost of human capital formation (guns v. butter and chalk), or at the cost of increasing the foreign debt of the country. It is this last case which is investigated in this paper. Our empirical results indicate that whatever the necessity and the benefits of the security aspect of defense, its economic costs are quite substantial. The military as a claimant of resources has a negative and non trivial effect on physical capital accumulation, and human capital formation. Moreover, financing increased military imports through borrowing from abroad has a negative and significant effect on the determinants of growth and development.Key Words: Defense Burden, Foreign Military Debt, Growth Rate, Investment, Education.

Output expectations productivity trends and employment : the case of Greek manufacturing

Recent contributions in dynamic analysis of labor demand suggest that employment in manufacturing can be regarded as being dependent on firms output expectations, factor prices, the level of fixed factors, technical progress and the business conditions at large.peer-reviewe

Time-resolved velocity map imaging of methyl elimination from photoexcited anisole

To date, H-atom elimination from heteroaromatic molecules following UV excitation has been extensively studied, with the focus on key biological molecules such as chromophores of DNA bases and amino acids. Extending these studies to look at elimination of other non-hydride photoproducts is essential in creating a more complete picture of the photochemistry of these biomolecules in the gas-phase. To this effect, CH3 elimination in anisole has been studied using time resolved velocity map imaging (TR-VMI) for the first time, providing both time and energy information on the dynamics following photoexcitation at 200 nm. The extra dimension of energy afforded by these measurements has enabled us to address the role of πσ* states in the excited state dynamics of anisole as compared to the hydride counterpart (phenol), providing strong evidence to suggest that only CH3 fragments eliminated with high kinetic energy are due to direct dissociation involving a 1πσ* state. These measurements also suggest that indirect mechanisms such as statistical unimolecular decay could be contributing to the dynamics at much longer times

Unravelling photoprotection in microbial natural products

Mycosporine-like amino acids have long been known as a natural form of photoprotection for fungi and cyanobacteria. This review will highlight the key time-resolved experimental and theoretical techniques unravelling their photochemistry and photophysics, and directly link this to their use in commercial skin-care products, namely as sunscreen filters. Three case studies have been selected, each having aided advancement in this burgeoning field of research. We discuss these studies in the context of photoprotection and conclude by evaluating the necessary future steps towards translating the photochemistry and photophysics insight of these nature derived sunscreen filters to commercial application

Applications of ultrafast spectroscopy to sunscreen development, from first principles to complex mixtures

Sunscreen formulations have been developed to provide an artificial protective barrier against the deleterious effects of overexposure to ultraviolet (UV) radiation in humans. Ultrafast pump-probe spectroscopy techniques have been an invaluable tool in recent years for determining the photochemistry of active ingredients in sunscreen formulations, predominantly UV filters, in both the gas- and solution-phases. These measurements have enabled the elucidation of molecular relaxation pathways and photoprotection mechanisms, which are in turn insightful for assessing a filter's photostability and suitability for sunscreen use. In this review, we discuss the benefits of a bottom-up approach: the progression from the study of UV filters for sunscreens in vacuum, away from the influences of any solvent; in solution, to investigate the relaxation pathways of potential sunscreen filters in closer to real-life conditions, whilst exploring the merits of selective functionalisation to improve their characteristics; and beyond, to current advances that are mimicking the application of sunscreen formulations to the surface of the skin

Understanding Total Quality Management in Context: Qualitative Research on Managers’ Awareness of TQM Aspects in the Greek Service Industry

This study addresses managers’ awareness and familiarity with Total Quality Management (TQM). Eighteen (18) semi-structured, in-depth interviews were conducted with managers working in a variety of service organizations in Greece. The major argument of the study is that although the acronym TQM and some of its concepts and practices are known by a range of public and private sector managers, actual awareness of its “soft” side is often superficial, and managers have a relatively poor understanding of it. TQM is neither resisted nor directly absorbed by them, but they tend to see it from the technical point of view, being aware only of the importance of its “hard” aspects

Observing and understanding the ultrafast photochemistry in small molecules : applications to sunscreens

In this review we discuss the importance of biological and artificial photoprotection against overexposure to harmful ultraviolet radiation. Transient electronic and transient vibrational absorption spectroscopies are highlighted as important tools in understanding the energy transfer in small molecules, with a focus on the application to commercial sunscreens with representative examples given. Oxybenzone, a common ingredient in commercial sunscreens and sinapoyl malate, a biological sunscreen in plant leaves are presented as case studies

Observing and understanding the ultrafast photochemistry in small molecules: applications to sunscreens

In this review we discuss the importance of biological and artificial photoprotection against overexposure to harmful ultraviolet radiation. Transient electronic and transient vibrational absorption spectroscopies are highlighted as important tools in understanding the energy transfer in small molecules, with a focus on the application to commercial sunscreens with representative examples given. Oxybenzone, a common ingredient in commercial sunscreens and sinapoyl malate, a biological sunscreen in plant leaves are presented as case studies