Cooperation between organisms can often be understood, like trade between merchants, as a mutually beneficial exchange of services, resources or other 'commodities'. Mutual benefits alone, however, are not sufficient to explain the evolution of trade-based cooperation. First, organisms may reject a particular trade if another partner offers a better deal. Second, while human trade often entails...

Being competitive in the international agri-food trade is an important aim of every country. It should be noted that this term has neither a commonly accepted definition nor synthetized index to quantify it. The most used indices literature are Balassa and its modified versions (revealed advantage, revealed competitiveness, normalized comparative symmetric advantage) different export and/or imp...

The comparative advantage of a location shapes its industrial structure. Current theoretical models based on this principle do not take stance how advantages in different industries or locations are related with each other, what such patterns relatedness might imply about the evolution advantage. We build simple Ricardian-inspired model and show that hidden information inter-industry inter-loca...

Using recycled concrete aggregate (RCA) as base/subbase for road construction is alternative way to manage construction waste and reduces the need for virgin aggregates. This paper discusses the long-term performance of concrete pavements on RCA granular layer in comparison to concrete pavements on virgin aggregate granular layer. 18 representative RCA pavement sections across Iowa were primary...

The aim of the article is to present possibilities that qualitative classifications industries and goods introduce analysis structural changes in economy, as well assess international competitiveness Polish merchandise trade long term. presents a review literature results authors’ own research on structure trade. study uses Lall’s classification which relatively innovative rarely used existing ...

while one of the society basic needs in present conditions is in economic structures changes in order to create new job opportunities, it requires the identification of investment opportunities. identifying the comparative advantage of economic activities in different areas, provide the possibility of optimum resource allocation by local and foreign investors. according to the comparative advan...

Coronary artery stenoses that limit blood flow below demand are considered critical. In this comparative study we investigated whether the same degree of stenosis in either the proximal third of the right coronary artery (RCA) or the proximal third of the left anterior descending artery (LAD) causes critical flow reduction. Lesions were quantified from 35-mm cinefilms in multiple projections us...

Komoditas jagung menjadi salah satu tanaman pangan unggulan di Provinsi Gorontalo dengan luas panen 343.241 ha. Pada tahun 2015, mampu melakukan ekspor komoditas ke negara-negara tetangga nilai sebesar $26.751.599 atau 85,25% dari total Gorontalo, jumlah produksi dalam rentang waktu 4 bulan mencapai 37.100 ton. Penelitian ini bertujuan untuk menganalisis daya saing Gorontalo. dilaksanakan diman...