IMPROVEMENT OF THE MECHANISM OF STATE REGULATION OF INVESTMENT IN THE INNOVATIVE DEVELOPMENT OF THE AGRARIAN SECTOR

The purpose of this article is to analyse the main factors of innovative development of the agrarian sector, to run a research on investment support of innovations, which will enable to determine the main directions of improvement of the mechanism of state regulation of investment in the innovative development of the agrarian sector of the country. The methodology of the research is to substantiate the necessity of state support of innovative development of the agrarian sector, as a priority direction of its investment support, which involves the implementation of a set of measures to change existing trends, reducing the amount of financing of scientific and technical works, and reducing the number of research institutions involved in the development and implementation of innovative products in agriculture, while creating an institutional environment for development and implementation of agrarian innovations through the national and regional investment funds, promotion of the implementation of scientific developments into production by expanding the availability of financial resources through public and private partnerships and the commercialization of research results. The results of the study indicate that Ukraine’s agriculture has potential opportunities to improve its competitive advantage in world markets. However, in order to strengthen them, it is necessary to take a number of measures: to form economic and political support for agricultural enterprises using scientific equipment and new technologies; to ensure the creation and distribution of a network of innovative funds to support innovative business at different levels; to orient all loans and support in Ukraine to implement innovative projects in specific areas of production development, including innovation and investment support of agricultural enterprises; Provide additional tax incentives for enterprises producing innovative products, which will increase the financial resources for the implementation of innovation projects and innovation program; clearly identify the legislative provision of funding and form a mechanism to support small businesses. Practical meaning. The identified development priorities can serve as a basis for creating conditions for the domestic agricultural enterprises to implement the offensive strategy in foreign markets, supporting constructive competition in the domestic market, which will stimulate agrarian formation to innovation, ensure close integration of production and science, in order to facilitate the advance development of scientific and technological sphere. Value/Originality. The results of the study indicate that improving the investment provision of the agrarian sector of the economy involves determining the prospects for its long-term development based on scientifically based methodological approaches, the use of which allows measuring changes and expected socioeconomic outcomes

Oscillation regimes of a solid-state ring laser with active beat note stabilization : from a chaotic device to a ring laser gyroscope

We report experimental and theoretical study of a rotating diode-pumped Nd-YAG ring laser with active beat note stabilization. Our experimental setup is described in the usual Maxwell-Bloch formalism. We analytically derive a stability condition and some frequency response characteristics for the solid-state ring laser gyroscope, illustrating the important role of mode coupling effects on the dynamics of such a device. Experimental data are presented and compared with the theory on the basis of realistic laser parameters, showing a very good agreement. Our results illustrate the duality between the very rich non linear dynamics of the diode-pumped solid-state ring laser (including chaotic behavior) and the possibility to obtain a very stable beat note, resulting in a potentially new kind of rotation sensor

Використання поляриметрії для вимірювання рельєфу місцевості

The article discusses modern geodetic measurement methods of relief, their advantages and disadvantages. It is also offered a polarimetric measurement method of relief. This method is intended for measuring relief and can also be used to measure slope road and airport paving, railways to geometric description of the surface complex engineering objects, such as bridges, roofs of buildings, architectural elements.Статья посвящена проблеме использования поляриметрии для измерения рельефа местности. Предложен поляриметрический метод измерения. В сравнении с существующими методами измерения поляриметрический метод обеспечивает сокращение времени и при этом обеспечивает высокую точность. Он обеспечивает непрерывность и высокую точность измерения за счёт использования поляриметра, высокую скорость и низкую трудоемкость измерительного процесса за счёт автоматизации процесса измерения.Статтю присвячено проблемі використання поляриметрії для вимірювання рельєфу місцевості. Запропоновано поляриметричний метод вимірювання. У порівнянні з наявними методами вимірювання поляриметричний метод забезпечує скорочення часу вимірювання й при цьому забезпечує високу точність. Він забезпечує неперервність і високу точність вимірювання завдяки застосуванню поляриметра, високу швидкість і низькі трудозатрати вимірювального процесу за рахунок автоматизації процесу вимірювання

Dopant-controlled single-electron pumping through a metallic island

We investigate a hybrid metallic island / single dopant electron pump based on fully-depleted silicon on insulator technology. Electron transfer between the central metallic island and the leads is controlled by resonant tunneling through single phosphorus dopants in the barriers. Top gates above the barriers are used control the resonance conditions. Applying radio frequency signals to the gates, non-adiabatic quantized electron pumping is achieved. A simple deterministic model is presented and confirmed by comparing measurements with simulations

A study of transport suppression in an undoped AlGaAs/GaAs quantum dot single-electron transistor

We report a study of transport blockade features in a quantum dot single-electron transistor, based on an undoped AlGaAs/GaAs heterostructure. We observe suppression of transport through the ground state of the dot, as well as negative differential conductance at finite source-drain bias. The temperature and magnetic field dependence of these features indicate the couplings between the leads and the quantum dot states are suppressed. We attribute this to two possible mechanisms: spin effects which determine whether a particular charge transition is allowed based on the change in total spin, and the interference effects that arise from coherent tunneling of electrons in the dot

Observation of the Kondo Effect in a Spin-3/2 Hole Quantum Dot

We report the observation of Kondo physics in a spin- 3/2 hole quantum dot. The dot is formed close to pinch-off in a hole quantum wire defined in an undoped AlGaAs/GaAs heterostructure. We clearly observe two distinctive hallmarks of quantum dot Kondo physics. First, the Zeeman spin-splitting of the zero-bias peak in the differential conductance is independent of gate voltage. Second, this splitting is twice as large as the splitting for the lowest one-dimensional subband. We show that the Zeeman splitting of the zero-bias peak is highly-anisotropic, and attribute this to the strong spin-orbit interaction for holes in GaAs.Comment: 4 pages, 4 figure

Piezoelectric rotator for studying quantum effects in semiconductor nanostructures at high magnetic fields and low temperatures

We report the design and development of a piezoelectric sample rotation system, and its integration into an Oxford Instruments Kelvinox 100 dilution refrigerator, for orientation-dependent studies of quantum transport in semiconductor nanodevices at millikelvin temperatures in magnetic fields up to 10T. Our apparatus allows for continuous in situ rotation of a device through >100deg in two possible configurations. The first enables rotation of the field within the plane of the device, and the second allows the field to be rotated from in-plane to perpendicular to the device plane. An integrated angle sensor coupled with a closed-loop feedback system allows the device orientation to be known to within +/-0.03deg whilst maintaining the sample temperature below 100mK.Comment: 8 pages, 5 figure