We consider the buffer content of a fluid queue or storage process. The buffer content varies in a way that depends on the state of an underlying three-state Markov process. In state 0 the buffer content increases at a rate α(x) that is a function of the current buffer level x; in states 1 and 2 it decreases linearly, with different speeds. We study the steady-state buffer content, by using lev...

background: because of the close relationship between economic growth and welfare of the societies many economists have been seeking to identify the sources of economic growth. human capital through enhancing workforce skills and quality, increases the amount of workforce income which consequently leads to economic growth. methods: this study is based on data from the social accounting matrix o...

privatization advocates believe that transfer to private sector increases firm’s performance and value, business environment, and therefore economic growth and welfare improves. in this research, by using the 70 accepted firms in the tehran stock exchange for the period of 2005 to 2009, we investigate the effect of firm’s ownership structure on their value by applying generalized method of mome...

In the present paper the applicability of state and rate dependent friction laws in describing the phenomena of high speed slip at metal-on-metal interfaces is investigated. For the purpose of model validation, results of plate-impact pressure-shear friction experiments were conducted by Irfan in 1998 and Irfan and Prakash in 2000 using a Ti6Al4V and Carpenter Hampden tool-steel tribo pair are ...

Building on the social science literature, we hypothesized that population health indicators in wealthy industrialized countries are 'clustered' around welfare state regime types. We tested this hypothesis during a period of welfare state expansion from 1960 to 1994. We categorized data from 19 wealthy countries into 4 different types of welfare state regimes (Social Democratic, Christian Democ...

Isoflavonoids and steady-state mRNA levels of phenylalanine ammonia-lyase, chalcone isomerase, and isoflavone reductase were followed during a rapid, nearly synchronous infection of alfalfa (Medicago sativa L.) roots by the vesicular arbuscular fungus Glomus intraradices (Schenck & Smith) to test whether previously indicated suppression of the host defense response is regulated by changes in th...