Determination of the trape depth of (ZnS) 1-x (MnTe)X Using theromoluminescence.

Thermoluminescence (TL) is a thermally stimulated light emission following the removal of excitation from an insulator or semiconductor. For luminescence emission,excitation is provided by irradiating the sample with X-ray or other ionizing radiation like α,β and ÎŽ –ray.  It should be noted that once heated to excite the light emission, the material can not be made to emit the thermoluminescence again by simply cooling the specimen and reheating

Increasing Dominance - the Role of Advertising, Pricing and Product Design

Despite the empirical relevance of advertising strategies in concentrated markets, the economics literature is largely silent on the effect of persuasive advertising strategies on pricing, market structure and increasing (or decreasing) dominance. In a simple model of persuasive advertising and pricing with differentiated goods, we analyze the interdependencies between ex-ante asymmetries in consumer appeal, advertising and prices. Products with larger initial appeal to consumers will be advertised more heavily but priced at a higher level - that is, advertising and price discounts are strategic substitutes for products with asymmetric initial appeal. We find that the escalating effect of advertising dominates the moderating effect of pricing so that post-competition market shares are more asymmetric than pre-competition differences in consumer appeal. We further find that collusive advertising (but competitive pricing) generates the same market outcomes, and that network effects lead to even more extreme market outcomes, both directly and via the effect on advertising

Intellectual property and optimal copyright protection

This paper develops a simple model that allows to analyze the rationale for the protection of intellectual property and to derive the conditions that an optimal form of protection has to meet. It is shown that not only a reason for the limitation of intellectual property rights does exist, but that efficient copyright protection must also be above a minimum level of protection. Furthermore, it is argued that even optimum copyright protection will not produce a first best solution, such that there is room for a comparative institutional analysis of different institutional arrangements that address the basic problem of providing incentives for the production of information goods.In diesem Beitrag wird anhand eines einfachen Modells gezeigt, warum der Schutz geistigen Eigentums notwendig ist, und welchen Bedingungen ein optimaler Urheberrechtsschutz zu genügen hat. Dabei zeigt sich, daß es nicht nur Gründe für eine Beschränkung des Schutzniveaus gibt, sonder auch für einen "Mindestschutz". Zudem wird deutlich, daß mit einem Urheberrechtsregime niemals eine first-best Lösung erzielt werden kann. Daraus ergibt sich, daß eine Beurteilung der Vor- und Nachteile eines urheberrechtlichen Schutzes zur Förderung der Produktion von Informationsgütern einen Vergleich mit anderen institutionellen Arrangements erfordert

Going means trouble and staying makes it double: the value of licensing recorded music online

This paper discusses whether a copyright compensation system (CCS) for recorded music—endowing private Internet subscribers with the right to download and use works in return for a fee—would be welfare increasing. It reports on the results of a discrete choice experiment conducted with a representative sample of the Dutch population consisting of 4986 participants. Under some conservative assumptions, we find that applied only to recorded music, a mandatory CCS could increase the welfare of rights holders and users in the Netherlands by over €600 million per year (over €35 per capita). This far exceeds current rights holder revenues from the market of recorded music of ca. €144 million per year. A monthly CCS fee of ca. €1.74 as a surcharge on Dutch Internet subscriptions would raise the same amount of revenues to rights holders as the current market for recorded music. With a voluntary CCS, the estimated welfare gains to users and rights holders are even greater for CCS fees below €20 on the user side. A voluntary CCS would also perform better in the long run, as it could retain a greater extent of market coordination. The results of our choice experiment indicate that a well-designed CCS for recorded music would simultaneously make users and rights holders better off. This result holds even if we correct for frequently observed rates of overestimation in contingent valuation studies

Separation versus affiliation with partial vertical ownership in network industries

The separation of integrated monopolies and new market entrants have changed vertical interactions between suppliers and dealers. Firms have substituted full integration with vertical restraints leading to collusive behaviour harmful to competition. We examine how a partial vertical ownership (an affiliation) of one of the competing downstream retailers by the upstream monopoly could help internalise the production decision after a complete divestiture. Our results in a Cournot framework confirm the positive role of partial integration on firms' profits and consumer surplus in increasing social welfare. These results are consistent with empirical studies of economies after vertical separation in network industries

Perspectives of Patients with Insulin-Treated Type 1 and Type 2 Diabetes on Hypoglycemia: Results of the HAT Observational Study in Central and Eastern European Countries

INTRODUCTION: The aim of this study was to determine the level of awareness of hypoglycemia, the level of fear for hypoglycemia, and the response to hypoglycemic events among insulin-treated diabetes patients from Central and Eastern Europe (CEE). The impact of hypoglycemia on the use of healthcare resources and patient productivity was also assessed. METHODS: This was a multicenter, non-interventional, two-part, patient self-reported questionnaire study that comprised both a retrospective cross-sectional evaluation and a prospective observational evaluation. Study participants were insulin-treated adult patients with type 1 diabetes mellitus (T1DM) or type 2 diabetes mellitus (T2DM) from CEE. RESULTS: Most patients (85.4% T1DM and 83.6% T2DM) reported normal hypoglycemia awareness. The median hypoglycemia fear score was 5 out of 10 for T1DM and 4 out of 10 for T2DM patients. Patients increased glucose monitoring, consulted a doctor/nurse, and/or reduced the insulin dose in response to hypoglycemia. As a consequence of hypoglycemia, patients took leave from work/studies or arrived late and/or left early. Hospitalization was required for 31 (1.2%) patients with T1DM and 66 (2.1%) patients with T2DM. CONCLUSION: Hypoglycemia impacts patients' personal and social functioning, reduces productivity, and results in additional costs, both direct (related to increased use of healthcare resources) and indirect (related to absenteeism. FUNDING: Novo Nordisk