background: hematological abnormalities are a common complication of hiv infection and occur in all stages of the infection. these abnormalities increase as the disease advances. we aimed to evaluate the diagnostic utility of bone marrow sampling in hiv-positive patients. methods: 40 hiv-infected individuals were screened for hematological abnormalities. investigations such as iron studies, hem...

background & aim: alhagi genus has two important  medicinal plant species in iran, including alhagi pseudoalhagi, and a. graecorum (known “kharshotor” in persian). these plants are distributed in iran like weeds. generally, alhagi is used as an anti-hemorrhoid, laxative and diuretic. manna in both species produced by activity of a kind of insect on alhagi branches which has medicinal proper...

Is more intense product market competition and imitation good or bad for growth? This question is addressed in the context of an endogenous growth model with “step-by-step” innovations, in which technological laggards must first catch up with the leading-edge technology before battling for technological leadership in the future. In contrast to earlier Schumpeterian models in which innovations a...

This paper tests the hypothesis that irrational market misvaluation affects firms’ takeover behavior. We employ two contemporaneous proxies for market misvaluation, pre-takeover book/price ratios and pre-takeover ratios of residual income model value to price. Misvaluation of bidders and targets influences the means of payment chosen, the mode of acquisition, the premia paid, target hostility t...

Competition is an increasingly important theme in telecommunications policy. It has been credited with expanding services, lowering prices, and stimulating innovation. (Jamison et al. 2009) But competition can raise difficult challenges for telecommunications policy makers and regulators. One of these challenges is determining the optimal mix of market and regulatory involvement in determinatio...

Numerous research have been discovered to developed internationalization process model (investment to other country market). Like Johanson and Vahlne, they are among the first to discuss the internationalization process model. There are four key items underlying Johanson and Vahlne’s model, those are market knowledge, market commitment, commitment decision, and current activities. However, many...

Real market institutions, stock and commodity exchanges for example, do not occur in isolation. The same stocks and commodities may be listed on multiple exchanges, and traders who want to deal in those goods have a choice of markets in which to trade. While there has been extensive research into agentbased trading in individual markets, there is little work on this kind of multiple market scen...

Designing electronic markets is a difficult task. Due to the complexities inherent to the design, the approach of market engineering provides a structured engineering process that divides the design process into phases and recommends methods to solve the tasks within the single design phases. This paper introduces the tool workbench CAME for designing electronic markets. The workbench supports ...

The efficient market hypothesis suggests that stock markets are “informationally efficient”. That is, any new information relevant to the market is spontaneously reflected in the stock prices. A consequence of this hypothesis is that past prices cannot have any predictive power for future prices once the current prices have been used as an explanatory variable. In other words the change in futu...