Two border effect models capturing the characteristics of agricultural trade based on the Gravity Model are put forward to make a study on China-US border effects in the sector of agricultural trade. Different methods are used to check the robustness of the models. Applying the panel data covering 19872005, the empirical results show that the border effects of China-US exist with a great magnit...

The application of the generalized gravity model in analyzing the Bangladesh’s trade reveals that Bangladesh’s trade is positively determined by the size of the economies, per capita GNP differential of the countries involved and openness of the trading countries. Bangladesh’s exports are positively determined by the exchange rate, partner countries’ total import demand and openness of the Bang...

Global problems associated with the transformation from the Arnowitt, Deser and Misner (ADM) to the Kuchař variables are studied. Two models are considered: The Friedmann cosmology with scalar matter and the torus sector of the 2+1 gravity. For the Friedmann model, the transformations to the Kuchař description corresponding to three different popular time coordinates are shown to exist on the w...

We propose a spatial network model for transportation system based on the optimal expected traffic. The expected traffic represents the prediction of the flow created by two vertices and is calculated by the improved gravity equation wij = K M i M α j D γ ij . The model maximizes the total expected traffic of the network. By changing the two parameters α and γ which controls the fitness and the...

The present work is a continuation of the previous papers written by the author on the subject. In terms of the measurability (or measurable quantities) notion introduced in a minimal length theory, first the consideration is given to a quantum theory in the momentum representation. The same terms are used to consider the Markov gravity model that here illustrates the general approach to studie...

Using annual data for the period 1992-2012, this paper examines trade flows between China and its main trade partners in Asia, North America and Europe, and whether increasing trade has led to industrial structural adjustment and changes in China’s trade patterns. The analysis is based on both economic indicators and the estimation of a gravity model, and applies recently developed panel data m...

We consider quantum gravity model with the squared curvature action. We construct lattice discretization of the model (both on hy-percubic and simplicial lattices) starting from its teleparallel equivalent. The resulting lattice models have the actions that are bounded from below while Einstein equations (without matter) appear in their classical limit.

According to traditional trade theories, foreign trade affects economic growth via several channels such as knowledge and technology spillover, improvement of resources allocation, increasing productivity and competitiveness. Within the framework of new trade theories, the effect of foreign trade on economic growth is ambiguous, and this effect depends on the combination of the different effect...

The role of intra-industry trade has been emphasized in international commerce since the 1960s. Innovation and government size, which affect goods and services production and government presence in international commerce, have also been highlighted since then. This study examines the influence of these two factors on international trade and estimates their effects in linear and logistic transfo...