Numerous models are proposed to model international trade and promote it. Vanek, instead of designing a trade pattern based on the production, introduced a pattern based on the factor content of trade. In the present study, apart from the Heckscher-Ohlin-Vanek (HOV) theorem, we attempt to determine the factor content of Iran's trade without factor price equalization by using internal input-outp...

  There is a significant relationship between economic growth and the degree of urban concentration, as measured by primacy or the share of the largest city in an urban system. In accordance to urban economic theories, there is an inverse-U shape relationship between urban concentration –urban primacy- and economic growth. That is, as economy grows, urban concentration increases, approaches a...

Biotech trees are some of the most heavily regulated plants in the world, yet no forest management system certifies the use of them as sustainable. The Responsible Use: Biotech Tree Principles are the first, and only, set of practices designed specifically for the long-term stewardship of biotech trees. These Principles may serve as a framework that certification systems can use when considerin...

This paper studies the phenomenon of service-led growth in India over the past two decades from the perspective of household expenditure. We use consumption expenditure data from four recent “thick” rounds of the National Sample Survey in 1993-94, 2004-05, 2009-10 and 2011-12, and study aggregate services as well as 5 individual categories – education, healthcare, transportation, entertainment,...

This article consists in three parts. The first part deals with theory. We evaluate the pros and cons of government involvement in urban housing and of renting versus ownership. In the second part, we summarize the different housing policies that have been implemented in the United States, Europe, and Asia. We draw some conclusions. In particular, we show that there is a tradeoff between encour...

A toxigenic non-O1/non-O139 strain of Vibrio cholerae (10259) was found to contain a new variant of the toxin-coregulated pilus (TCP) protein gene (tcpA) as determined by PCR and Southern hybridization experiments. Nucleotide sequence analysis data of the new tcpA gene in strain 10259 (O53) showed it to be about 74 and 72% identical to those of O1 classical and El Tor biotype strains, respectiv...