The foreign trade of Armenia with main partners

In this paper we investigate the levels of economic relations’ (foreign trade flows’) development of Armenia with all the above listed countries, trying to reveal the most perspective directions of foreign economic development of the R

Commercial diplomacy in Armenia’s foreign economic relations

Commercial diplomacy widely used among developed countries and it has been started to be used in developing countries. Commercial diplomacy can be realized at two levels: national and international. For developing countries like Armenia in international level SME’s need at least basic market information which very often differs from their home market structur

Electrical conductivity of warm neutron star crust in magnetic fields: Neutron-drip regime

We compute the anisotropic electrical conductivity tensor of the inner crust of a compact star at non-zero temperature by extending a previous work on the conductivity of the outer crust. The physical scenarios, where such crust is formed, involve proto-neutron stars born in supernova explosions, binary neutron star mergers and accreting neutron stars. The temperature-density range studied covers the transition from a non-degenerate to a highly degenerate electron gas and assumes that the nuclei form a liquid, i.e., the temperature is above the melting temperature of the lattice of nuclei. The electronic transition probabilities include (a) the dynamical screening of electron-ion interaction in the hard-thermal-loop approximation for the QED plasma, (b) the correlations of the ionic component in a one-component plasma, and (c) finite nuclear size effects. The conductivity tensor is obtained from the Boltzmann kinetic equation in relaxation time approximation accounting for the anisotropies introduced by a magnetic field. The sensitivity of the results towards the matter composition of the inner crust is explored by using several compositions of the inner crust which were obtained using different nuclear interactions and methods of solving the many-body problem. The standard deviation of relaxation time and components of the conductivity tensor from the average are below $\le 10\%$ except close to crust-core transition, where non-spherical nuclear structures are expected. Our results can be used in dissipative magneto-hydrodynamics (MHD) simulations of warm compact stars

Essential L-Amino Acid-Functionalized Graphene Oxide for Liquid Crystalline Phase Formation

The colloidal 2D materials based on graphene and its modifications are of great interest when it comes to forming LC phases. These LC phases allow controlling the orientational order of colloidal particles, paving the way for the efficient processing of modified graphene with anisotropic properties. Here, we present the peculiarities of AA functionalization of GO, along with the formation of its LC phase and orientational behavior in an external magnetic field. We discuss the influence of pH on the GOLC, ultimately showing its pH-dependent behavior for GO-AA complexes. In addition, we observe different GO morphology changes due to the presence of AA functional groups, namely L-cysteine dimerization on the GO platform. The pH dependency of AA-functionalized LC phase of GO is examined for the first time. We believe that our studies will open new possibilities for applications in bionanotechnologies due to self-assembling properties of LCs and magnificent properties of GO.Comment: 10 pages, 16 figure

Reentrant Melting of RNA with Quenched Sequence Randomness

The effect of quenched sequence disorder on the thermodynamics of RNA secondary structure formation is investigated for two- and four-letter alphabet models using the constrained annealing approach, from which the temperature behavior of the free energy, specific heat, and helicity is analytically obtained. For competing base pairing energies, the calculations reveal reentrant melting at low temperatures, in excellent agreement with numerical results. Our results suggest an additional mechanism for the experimental phenomenon of RNA cold denaturation

Underlining some limitations of the statistical formalism in quantum mechanics

We show that two chosen ensembles of spin states, which are differently prepared but are described by the same density matrix in quantum mechanics, do not fully share the same measurable characteristics. One characteristic on which they differ is shown to be the variance of the spin along a given direction. We conclude that the statistical description of an ensemble of states as given by its density matrix, although sufficient in many cases, should be considered incomplete, as it does not fully describe the measurable characteristics of the ensemble. A discussion a posteriori on the problem is provided

НАПРЯМИ УДОСКОНАЛЕННЯ ДІЯЛЬНОСТІ ФОНДУ ГАРАНТУВАННЯ ВКЛАДІВ ФІЗИЧНИХ ОСІБ: ЕКОНОМІКО-ПРАВОВИЙ АСПЕКТ

The features of the activities of the Deposit Guarantee Fund within the system of guaranteeing deposits of individuals have been studied in the article. The powers of the Deposit Guarantee Fund have been analyzed. It has been determined that its executive directorate exercises powers in the sphere of providing the Fund’s activity, in respect of sources of the formation of the Fund’s assets, in the sphere of deposit repayment, in the sphere of regulatory activity, in the field of withdrawing insolvent banks from the market. It has been offered to divide the powers of the administrative council of the Deposit Guarantee Fund into functional, conciliatory and regulatory ones. The problems of forming the resource base of the Deposit Guarantee Fund have been clarified. It has been emphasized that the expansion of the sources for the formation of the Fund’s assets is directly related to the range of participants of the system of individuals’ deposits guaranteeing. In order to increase the funds of the Deposit Guarantee Fund, it has been offered to include non-bank financial institutions into the Fund’s participants. Some aspects of control over the activity of the Deposit Guarantee Fund have been studied. It has been emphasized that the Fund’s annual report needs to be improved. It has been offered to consolidate the form of the annual report of the Fund in the legislation and to define the following its sections: main indicators of the Fund’s activity in the reporting period, internal management of the Fund, legislation and regulatory activity, public information, analysis of the banking sector, regulatory activity of the Fund, financial management, withdrawal of insolvent banks from the market, protection of depositors’ interests, the Fund’s financial reports. The directions for improving the Fund’s activity have been formulated, namely revision of the Fund’s powers in terms of exercising control over troubled banks, expanding the range of subjects and objects of the deposit guaranteeing system, improving control over the Fund’s activities, introducing new mechanisms for repayment to depositors of insolvent banks, expanding the list of sources for the formation of the Fund’s assets.Исследованы особенности деятельности Фонда гарантирования вкладов физических лиц в системе гарантирования вкладов физических лиц. Проанализированы полномочия Фонда гарантирования вкладов физических лиц. Выяснены проблемы формирования ресурсной базы Фонда гарантирования вкладов физических лиц. Указано, что расширение источников формирования средств Фонда гарантирования вкладов физических лиц напрямую связано с кругом участников системы гарантирования вкладов физических лиц. Рассмотрены отдельные аспекты контроля за деятельностью Фонда гарантирования вкладов физических лиц. Сформулированы направления совершенствования деятельности Фонда гарантирования вкладов физических лиц.Досліджено особливості діяльності Фонду гарантування вкладів фізичних осіб у системі гарантування вкладів фізичних осіб. Проаналізовано повноваження Фонду гарантування вкладів фізичних осіб. Визначено, що його виконавча дирекція здійснює повноваження у сфері забезпечення діяльності Фонду, щодо джерел формування коштів Фонду, у сфері забезпечення відшкодувань за вкладами, у сфері регуляторної діяльності, у сфері виведення неплатоспроможних банків з ринку. Запропоновано повноваження адміністративної ради Фонду гарантування вкладів фізичних осіб поділити на функціональні, погоджувальні і розпорядчі. З’ясовано проблеми формування ресурсної бази Фонду гарантування вкладів фізичних осіб. Наголошено, що розширення джерел формування коштів Фонду безпосередньо пов’язано з колом учасників системи гарантування вкладів фізичних осіб. З метою збільшення коштів Фонду гарантування вкладів фізичних осіб запропоновано включити до складу учасників Фонду небанківські фінансові установи. Розглянуто окремі аспекти контролю за діяльністю Фонду гарантування вкладів фізичних осіб. Наголошено, що річний звіт Фонду потребує вдосконалення. Запропоновано закріпити форму річного звіту Фонду в законодавстві та визначити такі його розділи: основні показники діяльності Фонду у звітному періоді, внутрішнє управління Фонду, законодавство та регуляторна діяльність, інформування громадськості, аналіз банківського сектору, регулятивна діяльність Фонду, управління фінансами, виведення неплатоспроможних банків з ринку, захист інтересів вкладників, фінансова звітність Фонду. Сформульовано напрямами удосконалення діяльності Фонду, а саме: перегляд повноважень Фонду в частині здійснення контролю за проблемними банками, розширення кола суб’єктів та об’єктів системи гарантування вкладів, удосконалення контролю за діяльністю Фонду, запровадження нових механізмів здійснення виплат відшкодування вкладникам неплатоспроможних банків, розширення переліку джерел формування коштів Фонду

E-Beam Induced Micropattern Generation and Amorphization of L-Cysteine-Functionalized Graphene Oxide Nano-composites

The evolution of dynamic processes in graphene-family materials are of great interest for both scientific purposes and technical applications. Scanning electron microscopy and transmission electron microscopy outstand among the techniques that allow both observing and controlling such dynamic processes in real time. On the other hand, functionalized graphene oxide emerges as a favorable candidate from graphene-family materials for such an investigation due to its distinctive properties, that encompass a large surface area, robust thermal stability, and noteworthy electrical and mechanical properties after its reduction. Here, we report on studies of surface structure and adsorption dynamics of L-Cysteine on electrochemically exfoliated graphene oxides basal plane. We show that electron beam irradiation prompts an amorphization of functionalized graphene oxide along with the formation of micropatterns of controlled geometry composed of L-Cysteine-Graphene oxide nanostructures. The controlled growth and predetermined arrangement of micropatterns as well as controlled structure disorder induced by e beam amorphization, in its turn potentially offering tailored properties and functionalities paving the way for potential applications in nanotechnology, sensor development, and surface engineering. Our findings demonstrate that graphene oxide can cover L-Cysteine in such a way to provide a control on the positioning of emerging microstructures about 10-20 um in diameter. Besides, Raman and SAED measurement analyses yield above 50% amorphization in a material. The results of our studies demonstrate that such a technique enables the direct creation of micropatterns of L-Cysteine-Graphene oxide eliminating the need for complicated mask patterning procedures

A European Concern? Genetic Structure and Expansion of Golden Jackals (Canis aureus) in Europe and the Caucasus

In the first continent-wide study of the golden jackal (Canis aureus), we characterised its population genetic structure and attempted to identify the origin of European populations. This provided a unique insight into genetic characteristics of a native carnivore population with rapid large-scale expansion. We analysed 15 microsatellite markers and a 406 basepair fragment of the mitochondrial control region. Bayesian-based and principal components methods were applied to evaluate whether the geographical grouping of samples corresponded with genetic groups. Our analysis revealed low levels of genetic diversity, reflecting the unique history of the golden jackal among Europe’s native carnivores. The results suggest ongoing gene flow between south-eastern Europe and the Caucasus, with both contributing to the Baltic population, which appeared only recently. The population from the Peloponnese Peninsula in southern Greece forms a common genetic cluster with samples from south-eastern Europe (ΔK approach in STRUCTURE, Principal Components Analysis [PCA]), although the results based on BAPS and the estimated likelihood in STRUCTURE indicate that Peloponnesian jackals may represent a distinct population. Moreover, analyses of population structure also suggest either genetic distinctiveness of the island population from Samos near the coast of Asia Minor (BAPS, most STRUCTURE, PCA), or possibly its connection with the Caucasus population (one analysis in STRUCTURE). We speculate from our results that ancient Mediterranean jackal populations have persisted to the present day, and have merged with jackals colonising from Asia. These data also suggest that new populations of the golden jackal may be founded by long-distance dispersal, and thus should not be treated as an invasive alien species, i.e. an organism that is “non-native to an ecosystem, and which may cause economic or environmental harm or adversely affect human health”. These insights into the genetic structure and ancestry of Baltic jackals have important implications for management and conservation of jackals in Europe. The golden jackal is listed as an Annex V species in the EU Habitats Directive and as such, considering also the results presented here, should be legally protected in all EU member states

The barrel DIRC of PANDA

Cooled antiproton beams of unprecedented intensities in the momentum range of 1.5-15 GeV/c will be used for the PANDA experiment at FAIR to perform high precision experiments in the charmed quark sector. The PANDA detector will investigate antiproton annihilations with beams in the momentum range of 1.5 GeV/c to 15 GeV/c on a fixed target. An almost 4π acceptance double spectrometer is divided in a forward spectrometer and a target spectrometer. The charged particle identification in the latter is performed by ring imaging Cherenkov counters employing the DIRC principle