Controllable optical bistability and Fano line shape in a hybrid optomechanical system assisted by Kerr medium: Possibility of all optical switching

We theoretically analyze the optical and optomechanical nonlinearity present in a hybrid system consisting of a quantum dot(QD) coupled to an optomechanical cavity in the presence of a nonlinear Kerr medium, and show that this hybrid system can be used as an all optical switch. A high degree of control and tunability via the QD-cavity coupling strength, the Kerr and the optomechanical nonlinearity over the bistable behavior shown by the mean intracavity optical field and the power transmission of the weak probe field can be achieved.The results obtained in this investigation has the potential to be used for designing efficient all-optical switch and high sensitive sensors for use in Telecom systems.Comment: 18 pages and 7 figures. Comments welcom

Financial market integration and the value of global diversification: evidence from US acquirers in cross-border mergers and acquisitions

Using theories of internal capital markets, this paper examines the link between financial market integration and the value of global diversification. Based on a sample of 1,491 completed cross-border mergers and acquisitions (M&As) conducted by US acquirers during the 1990–2003 period, we find that, in general, US shareholders gain significant positive abnormal returns following the announcement of the merger/acquisition. Specifically, firms that acquire/merge with targets from countries with financially segmented markets experience significantly higher positive abnormal returns than those that acquire/merge with targets from countries with financially integrated capital markets. We find that the significantly higher positive returns are driven particularly by deals between firms from unrelated industries. These firms with higher announcement returns are also characterized by positive and significant post-merger operating performance. This finding is consistent with our event study results and suggests that the overall improvement in the merged firms’ performance is likely due to the influx of internal capital from wholly integrated acquirers to segmented targets, firms that, on average are usually faced with higher capital constraints.financial market integration; global diversification; internal capital markets; mergers; acquisitions

Simulated Annealing for Location Area Planning in Cellular networks

LA planning in cellular network is useful for minimizing location management cost in GSM network. In fact, size of LA can be optimized to create a balance between the LA update rate and expected paging rate within LA. To get optimal result for LA planning in cellular network simulated annealing algorithm is used. Simulated annealing give optimal results in acceptable run-time.Comment: 7 Pages, JGraph-Hoc Journa

Return-volatility linkages in the international equity and currency markets

This paper, which is motivated by the literature on international asset pricing and recent work on exchange rate determination, investigates dynamic relationshiops between major currency and equity markets. Using a multivariate GARCH framework, we examine conditional cross-autocorrelations between pairs of national equity markets and related exchange rates. This provides a parsimonious way of testing mean-volatility relationships in currency and equity markets and re-examining the robustness of relationships between equity markets, while controlling for exchange rate effects. We find that the relationship between currency and equity markets is bi-directional, significant, persistent, and independent of the relationship strictly between equity markets, and that it is better captured by the conditional second moments.international asset pricing; exchange rate determination; equity markets; relationships between currency and equity markets

Return-volatility linkages in the international equity and currency markets

This paper, which is motivated by the literature on international asset pricing and recent work on exchange rate determination, investigates dynamic relationshiops between major currency and equity markets. Using a multivariate GARCH framework, we examine conditional cross- autocorrelations between pairs of national equity markets and related exchange rates. This provides a parsimonious way of testing mean- volatility relationships in currency and equity markets and re-examining the robustness of relationships between equity markets, while controlling for exchange rate effects. We find that the relationship between currency and equity markets is bi-directional, significant, persistent, and independent of the relationship strictly between equity markets, and that it is better captured by the conditional second momentsinternational asset pricing, exchange rate determination, equity markets, relationships between currency and equity markets

Political connections and the process of going public: evidence from China

We examine how political connections impact the process of going public. Specifically, we test how political connections impact the pricing of newly offered shares, the magnitude of underpricing, and the fixed cost of going public. Based on experiences of the new public firms in the Chinese security markets and using multiple measures of political connections, we find robust evidence that issuing firms with political connections reap significant preferential benefits from going public. To be specific, we find that firms – irrespective of ownership arrangements – with greater political connections have higher offering prices, less underpricing, and lower fixed costs during the going-public process.political connections; IPO; emerging markets

Designing a Framework for Writing Tasks

In fact, there has been much debate over the utility of composition as tests of language proficiency and even as tests of writing skill. This article, nonetheless, will clarify that subjective methods of evaluating and objective scoring technique are strongly correlated. Some studies have also found that lecturer judgments of a subjective sort have substantial reliability and are significantly correlated with similar judgments by independent raters and with objective scores computed over the same composition work. In this article, how both holistic evaluation and objective measures are operated in the classroom of English writing will accordingly be discussed

Interlanguage in Error Analysis Study

Interlanguage theory is naturally a constantly evolving theory, having changed considerably since its initial formulation. It is, therefore, not an easy task to produce an accurate account of the theory. The aim of this article is basically to provide a brief and composite account of the interlanguage theory. In so doing, some crucial issues are accordingly viewed: (1) error analysis, (2) stages of interlanguage development, (3) Interlanguage transfer, (4) fossilization, (5) input hypothesis, (6) and pidginization fossilization, I ginization as well. There is in fact considerable disagreement about how best to characterize the nature of an interlanguage system. Nevertheless, this principle is able to account for insights provided byform-function analysis

Understanding Academic Research Plan: an Overview

The goal of all scientific studies is to explain, predict, and control phenomena. The goal is based on assumption that all behaviors and events are orderly and that they are effects which have discoverable causes. Progress toward this goal involves acquisition of knowledge and the development of testing of theories. Dealing with this idea, typical research traditions are exposed in this article aimed at providing insights for the students in order to become knowledgeable about how to systematically and logically construct academic research plan