ultra-short pulse is a promising technology for achieving ultra-high data rate transmission which is required to follow the increased demand of data transport over an optical communication system. therefore, the propagation of such type of pulses and the effects that it may suffer during its transmission through an optical waveguide has received a great deal of attention in the recent years. we...

The literature on the benefits and costs of financial globalization for developing countries has exploded in recent years. There seems to be a consensus that financial globalization has had a "discipline effect" on monetary policy, because it has reduced the returns from using monetary policy to stabilize the output. As a result, monetary policy over recent years has placed more emphasis o...

in almost all countries around the world (developed as well as developing countries) the public sector economics has been growing very rapidly and caused the share of government expenditures in gdp to rise over time. although in recent years, especially from the end of 1980, for different reasons especially privatization the trend of public sector growth has been slowed, but the factors behindt...

this paper presents the analysis of the onset and withdrawal dates and the duration of summer monsoon over nepal for last 63 years (1951-2013). the trend analysis revealed that both the onset and withdrawal of summer monsoon are delayed in recent years. the statistical analysis using cumulative deviation and worsley likelihood tests showed a step jump in mean withdrawal date after the year 1997...

Organic farming has become increasingly popular in the world. This is mostly attributed toescalating consumer concerns over the impacts of pesticides and chemical fertilizers on humanhealth as well as growing concerns over environmental pollution derived from modernagricultural practices, such as rising greenhouse gas emissions and water contaminations. Butdoes organic farming actually displace...

background: lung cancer is one of the most fatal and preventable cancers. in this study, we sought to investigate about trend in incidence of lung cancer in kermanshah province -iran. methods: all pathology reports on lung cancer were collected from pathology centers in kermanshah province in recent 11 years (1997-2007). after merging the data with cases reported in, province health centre data...