AGRARIAN REGIONS IN SERBIA AS NATURAL FOUNDATION AND MARKET CHANCE IN CIRCUMSTANCES OF TRANSITION

Process of transition movements in Republic of Sebia is in progress. Transition movements have not bypassed agrarian sector. Market agriculture should gain significance along this process. On this occasion we would like to emphasis two elements which affect development of Market Agriculture. Those are regionalization and specialization of agriculture. In study about agrarian regions in conditions of transition two charts are given, that pinpoint the essence of natural foundation and market opportunities in transition circumstances. Study of agro-identities starts with introspection of each reagion in respect of its natural values: plain (Vojvodina), hilly ( Sumadija), mountain-hilly (Pester). Therefore, plain region is specialized for production of stable livestocking (cattle and hogs), mountain-hilly is based on pasture (sheep and cattle) etc. Regional disposition of some types of livestocking is limited by natural conditions and structure of agricultural area. Essentially, the level of livestock farming has been determined by economic progress of the region and Market development. The certain other regions are specialized in viticulture, fruit-growing or vegetable growing (vicinity of big cities). In time of transition, i.e. transferring to Market Agriculture, issue of regional identity has become more actual than ever. This could be best illustrated on the example of forming specialized cooperatives, agricultural markets and companies (plum and apple production and other agricultural cropping) spread throughout particular areas of Serbia.Agrarian regions, Regionalization, Specialization, Agribusiness, Community/Rural/Urban Development, International Development,

Entanglement as an indicator of a geometrical crossover in a two-electron quantum dot in a magnetic field

We found that a downwardly concave entanglement evolution of the ground state of a two-electron axially symmetric quantum dot testifies that a shape transition from a lateral to a vertical localization of two electrons under a perpendicular magnetic field takes place. Although affected, the two-electron probability density does not exhibit any prominent change.Comment: 4 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:1112.347

Magnetic alteration of entanglement in two-electron quantum dots

Quantum entanglement is analyzed thoroughly in the case of the ground and lowest states of two-electron axially symmetric quantum dots under a perpendicular magnetic field. The individual-particle and the center-of-mass representations are used to study the entanglement variation at the transition from interacting to noninteracting particle regimes. The mechanism of symmetry breaking due to the interaction, that results in the states with symmetries related to the later representation only, being entangled even at the vanishing interaction, is discussed. The analytical expression for the entanglement measure based on the linear entropy is derived in the limit of noninteracting electrons. It reproduces remarkably well the numerical results for the lowest states with the magnetic quantum number M>2 in the interacting regime. It is found that the entanglement of the ground state is a discontinuous function of the field strength. A method to estimate the entanglement of the ground state, characterized by the quantum number M, with the aid of the magnetic field dependence of the addition energy is proposed.Comment: 21 pages, 7 figure

Strategy elements of export improvement in agro-economy of Serbia

In forthcoming period, export organizations are going to face tougher competition, which will significantly influence on expectable export effects of their products. This factor must be counted on, and the only way to long-term neutralize the negative effects, based on insufficient competitiveness of domestic goods, is in constant efforts for competitiveness level increment of these products. That is to say, all reserves, primarily in the field of larger productivity and decreasing the production costs have to be engaged in this plan. That implies also certainly slower prices increment, as well as solutions regarding adequate export impulse and relief of export - oriented production, which would certainly help to react more efficient and faster to conditions on foreign market. Regarding comparative advantages, Serbia insufficiently uses even realistic natural possibilities for agricultural products production.agro-economy, strategy, export, cooperation

Limited utility of qPCR-based detection of tumor-specific circulating mRNAs in whole blood from clear cell renal cell carcinoma patients

BACKGROUND: RNA sequencing data is providing abundant information about the levels of dysregulation of genes in various tumors. These data, as well as data based on older microarray technologies have enabled the identification of many genes which are upregulated in clear cell renal cell carcinoma (ccRCC) compared to matched normal tissue. Here we use RNA sequencing data in order to construct a panel of highly overexpressed genes in ccRCC so as to evaluate their RNA levels in whole blood and determine any diagnostic potential of these levels for renal cell carcinoma patients. METHODS: A bioinformatics analysis with Python was performed using TCGA, GEO and other databases to identify genes which are upregulated in ccRCC while being absent in the blood of healthy individuals. Quantitative Real Time PCR (RT-qPCR) was subsequently used to measure the levels of candidate genes in whole blood (PAX gene) of 16 ccRCC patients versus 11 healthy individuals. PCR results were processed in qBase and GraphPadPrism and statistics was done with Mann-Whitney U test. RESULTS: While most analyzed genes were either undetectable or did not show any dysregulated expression, two genes, CDK18 and CCND1, were paradoxically downregulated in the blood of ccRCC patients compared to healthy controls. Furthermore, LOX showed a tendency towards upregulation in metastatic ccRCC samples compared to non-metastatic. CONCLUSIONS: This analysis illustrates the difficulty of detecting tumor regulated genes in blood and the possible influence of interference from expression in blood cells even for genes conditionally absent in normal blood. Testing in plasma samples indicated that tumor specific mRNAs were not detectable. While CDK18, CCND1 and LOX mRNAs might carry biomarker potential, this would require validation in an independent, larger patient cohort

Sweating the small stuff: a meta-analysis of skin conductance on the Iowa gambling task

To systematically examine the role of anticipatory skin conductance responses (aSCRs) in predicting Iowa Gambling Task (IGT) performance. Secondly, to assess the quality of aSCR evidence for the Somatic Marker Hypothesis (SMH) during the IGT. Finally, to evaluate the reliability of current psychophysiological measurements on the IGT. Electronic databases, journals and reference lists were examined for inclusion. Data were extracted by two reviewers and validated by another reviewer, using a standardised extraction sheet along with a quality assessment. Two meta-analyses of aSCR measures were conducted to test the relationship between overall aSCR and IGT performance, and differences in aSCR between advantageous and disadvantageous decks. Twenty studies were included in this review. Quality assessment revealed that five studies did not measure anticipatory responses, and few stated they followed standard IGT and/or psychophysiological procedures. The first meta-analysis of 15 studies revealed a significant, small-to-medium relationship between aSCR and IGT performance (r= .22). The second meta-analysis of eight studies revealed a significant, small difference in aSCR between the advantageous and disadvantageous decks (r= .10); however, publication bias is likely to be an issue. Meta-analyses revealed aSCR evidence supporting the SMH. However, inconsistencies in the IGT and psychophysiological methods, along with publication bias, cast doubt on these effects. It is recommended that future tests of the SMH use a range of psychophysiological measures, a standardised IGT protocol, and discriminate between advantageous and disadvantageous decks.N/