Vertical and Horizontal Networks and Export Performance in the Spanish Wine Industry

Wineries in the “old world” export almost 40% of their production. This study analyzes the influence of vertical and horizontal networks on export performance. We draw on a sample of 183 Spanish wineries and examine the main independent variables using a two-step Heckman model. We find positive effects of horizontal networks and—at a somewhat lower level—downstream vertical networks on export performance. (JEL Classifications: L66, M16, Q13)

ConvGraph: Community Detection of Homogeneous Relationships in Weighted Graphs

This paper proposes a new method, ConvGraph, to detect communities in highly cohesive and isolated weighted graphs, where the sum of the weights is significantly higher inside than outside the communities. The method starts by transforming the original graph into a line graph to apply a convolution, a common technique in the computer vision field. Although this technique was originally conceived to detect the optimum edge in images, it is used here to detect the optimum edges in communities identified by their weights rather than by their topology. The method includes a final refinement step applied to communities with a high vertex density that could not be detected in the first phase. The proposed algorithm was tested on a series of highly cohesive and isolated synthetic graphs and on a real-world export graph, performing well in both cases.

LOCATION OF OILSEED PRODUCTION IN TERMS OF VEGETABLE OIL EXPORT

The article is devoted to the issues of placing seed production in the conditions of world export of vegetable oils. In 2019, the volume of Russian exports of sunflower oil exceeded 3 million tons for a total of $ 2,2 billion, which is about 30% of the vegetable oil produced in the country. In Russia, the main oilseeds are sunflower, rapeseed, and soy. Less common crops include oilseed flax, ginger, mustard, and safflower. It is stated that in 2001–2019, the acreage of all types of oilseeds in the country increased by more than 2 times, and the gross harvest – by 3,3 times, while the yield increased by 1,4 times.

Strategic Positioning of Turkey Agricultural Products on the Agricultural World Market

Applying a strategic management perspective, particularly the BCG tool, this chapter demonstrates that the agricultural products exported by Turkey are distributed unevenly on the four cells of the global agricultural markets matrix: almost of its products (236 products or 85.20% of its portfolio) are Question Marks, two products are a Star, one product is a Cash cow, and 38 products are Dogs. Such a situation creates important strategic choices for the leaders of the country and for its businesses. None of Turkey top ten exports were among the top ten growers in the world. Turkey is world export leader in ten products, but these products are not the world most growing markets, and the country should increase its relative market share in some of its ten top exports, and also consider developing organic product segments, and eliminate tobacco products in its portfolio.

World market of coking coals within the period of 2000–2017 and tendencies of its further development

Data on mining and consumption of coking coals quoted, including China, Australia, Russia, USA and India. It was shown, that China, taking the first place in the world on those indices, keeps a policy of coals mining and consumption cutting. The China authorities set a task to cut coal mining by 500 mt within 3–5 years beginning from 2016, by mines closing and reducing of working days number at coal-mining plants (from 330 down to 276 a year). At Ukraine in 2017 only 5.2 mt of coking coals were mined, relating to the 2000 level it constitutes only 18.8%. A cardinal reduction of coking coals production from 18.9 mt in 2000 down to 2.4 mt in 2017 observed in Germany. The world consumption of coking coals from 2000 through 2017 increased more than two-folds. However, beginning from 2014, a decreasing trend observed. China is the leader in coking coals consumption. The consumption of them increased in 2017 comparing with 2000 more than five-folds. South Korea takes the fifth place by coking coals consumption. The volume of its consumption increased from 2000 through 2017 by factor 1.9. Ukraine, USA and Germany decreased consumption of coking coals within the period under consideration by 44.3, 38.7 and 40.1% correspondently. The coal world export by end of 2017 comparing with 2000 increased by factor 1.7. By results of 2017, Australia exported 62% of the world coking coal trade volume. USA are the second big exporter of coking coals. The export of coals from the USA in 2017 increased comparing with 2000 by 68%.