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• Examination of the Effect of Transaction Costs in the Hungarian Beef Sector

  212-223

  Krisztina Bárdos

  Views:

  194

  technical and economic characteristics, which give rise to high levels of uncertainty and greater control in the supply chain. In order to investigate the role of different transaction costs in marketing behavior, we carried out research in the central region of Hungary among beef retailers and wholesalers. This research is based on primary data collection and examines the motivation of choices in the beef sector on distinction among different marketing channels and the role of transaction costs in procurement. Since this case can be regarded as a qualitative choice situation the hypothesis that transaction cost’s variables are significant is judged by the application of multinomial logit model in order come up with the variables that can influence the supply chain structure and the choice of different marketing channels. This analysis enabled us to explore the structure in data and confirm or reject the expected interrelations of causative variables. Our
  1 A szerző témavezetője Dr. Fertő Imre.
  2 A kutatás az OTKA F038082 sz. „Vertikális koordinációs és integrációs modellek az élelmiszer-gazdaságban” c. programja keretében valósult meg.
  3 A szerző köszöni Dr. Fertő Imrének és Dr. Szabó G. Gábornak, a Magyar Tudományos Akadémia Közgazdaságtudományi Kutatóközpont tudományos főmunkatársainak a kutatás során nyújtott nagy értékű segítséget. results partly support and contradict the basic predictions of transaction cost economics.

• Towards good land governance in Ukraine

  37-39

  Roman Kuryltsiv

  Views:

  198

  The article presents the analysis of transformation of land governance system in Ukraine and explores peculiarities of every component of that system. The carried investigation reveals problematic aspects and the ways for improvement of state land policy, land reform conducting, land management instruments applying and land administration system building to promote good governance in land sector of Ukraine.

• Evolution of some components of agroecosystems productivity from Vinga Plain in water stress situations

  174-179

  Daniel Dicu

  Iacob Borza

  Dorin Tarau

  Views:

  165

  The researches are inscribed on line of substantiation of durable agricultural system, having main objective the prominence of
  quantitative and qualitative modifications made on agro-system level under the effect of no-tillage system for wheat, maize and soybeans.
  The experimental field is placed on a cambium chernozem, with a medium content of clay, dominant in the Prodagro West Arad agrocentre
  and representative for a large surface in the Banat-Crisana Plain.
  The passing to no-till system change the structure of technological elements, through less soil works, so the impact on agro-system is
  different comparing with conventional tillage, first less the intervention pressure on agro-system ant secondly appears new interactions, new
  equilibriums and disequilibriums.
  Considering the evolution of soil humidity, the observations made monthly (by taking soil samples and laboratory determinations) for
  the three cultures showed that in the no-till system, there are more uniform values in the soil profile, and in the variants where the deep work
  of soil was made it could be observed a low increase of the water volume in the soil.

• The system of faunacomponents conception and its application to qualify the degree of naturalness of fish assemblages

  93-101

  Péter Sály

  Views:

  171

  The increase of species richness in communities of natural biogeographic regions in an anthropogenic way can be expressed as biogeographic pollution. Where there is contaminated fauna, one must investigate how this occured. I studied how the members of Hungarian fishfauna could be present resident and have managed to workout a so-called system of fauna component conception which is suitable for this requirement.
  The expression of ’faunacomponent’ includes other expressions. That kind of species belong to a certain faunacomponent that reached the studied area in the same way. Species reached the studied area without an anthropogenious contribution are qualified as native fauna components. These kind of species are endemic species, occasional species and settlers. In contrast to native faunacomponents, some kind of human influence is always detectable in connection with the way reached the studied area by non-native species. Accordingly, group of non-native species includes directly or indirectly facilitated settlers, species that are introduced accidentally and those introduced intentionally. It is obvious that classifying a given species could be construed solely in connection with a certain area.
  Applying Shannon diversity index I have initiated the assemblage natural index (ANI) in order to show a way how to use the system of faunacomponent conception in practice. ANI refers to the degree of naturalness of faunistical samples. If ANI > 1 it means there are not any non-native species and ANI < 1 it means there are some non-native species in the sample respectively. In the latter case ANI decreases proportionally with the number of non-native species and specimens. In that special case when only one specimen of only one non-native species can be found in the faunistical sample ANI = 1.