Typification of the terrigenous reservoirs of Tevlinsko-Russkinskoye field Upper Jurassic horizon and features of the anisotropy of their filtration-capacitive properties

On the basis of a detailed sedimentological analysis of the Upper Jurassic horizon Yu 1 of Sredneobskaya group of fields their facial, macro-and microheterogeneity is revealed, that determines their complicated structure. The typification of productive silty sand deposits of horizon was carried out. It was noted that Information about the anisotropy of the reservoir allows to substantiate the application of bed stimulation methods. The problems of the anisotropy of the Investigated sediments are considered

ПОВЫШЕНИЕ ТОЧНОСТИ РАБОТЫ АВТОМАТИЗИРОВАННЫХ ВЕСОИЗМЕРИТЕЛЬНЫХ СИСТЕМ ЗА СЧЁТ ИСКЛЮЧЕНИЯ СИСТЕМАТИЧЕСКИХ ПОГРЕШНОСТЕЙ

Rising of accuracy of automated weighting systems' functioning can be achieved by identifying and exclusion of systematic errors. Methods of reducing of temperature error's impact and design procedure of thermocompensation elements of strain-gauge bridges are considered.Повышение точности работы систем автоматизированного взвешивания, как и любых других средств измерений и технологического оборудования, может достигаться за счёт выявления и исключения систематических погрешностей. Рассмотрены методы снижения влияния температурной погрешности и методики расчета термокомпенсационных элементов тензометрических мостов

ИМИТАЦИОННОЕ МОДЕЛИРОВАНИЕ МЕХАНИЗМА НАПЛАВЛЕНИЯ ПЛАСТМАСС В АДДИТИВНЫХ ТЕХНОЛОГИЯХ

This article discusses: model of the two-link mechanism; generalized scheme of mechatronic simulation model of 3D-printer with the positioning units of electric DC; mathematical model of the actuator of the printer unit in the form of a system of differential equations; 3D-printer programming model implemented in the Matlab-Simulink environment using the c standard library blocks and SimMechanics library; virtual (animated) 3D printer model on the basis of the library Simulink 3D Animation, supports the visualization of the movements of the designed mechanism of the basic units. We present the initial data and the results of simulation of 3D-printer type Scara as a waveform positioning actuator (extruder) in the manufacture of test items by fusing plastic.В статье рассматриваются: модель работы двухзвенного механизма; обобщенная схема имитационной модели мехатронной системы 3D-принтера с позиционированием звеньев электроприводами постоянного тока; математическая модель электропривода одного звена принтера в виде системы дифференциальных уравнений; имитационная модель 3D-принтера, реализованная в среде Matlab-Simulink c помощью блоков стандартной библиотеки и библиотеки SimMechanics; виртуальная (анимационная) модель 3D-принтера на базе библиотеки Simulink 3D-Animation, поддерживающая визуализацию движений основных узлов проектируемого механизма.Представлены исходные данные и результаты моделирования работы 3D-принтера типа Scara в виде временных диаграмм позиционирования исполнительного элемента (экструдера) при изготовлении тестовой детали методом наплавления пластмассы

An Algebraic Approach for Decoding Spread Codes

In this paper we study spread codes: a family of constant-dimension codes for random linear network coding. In other words, the codewords are full-rank matrices of size (k x n) with entries in a finite field F_q. Spread codes are a family of optimal codes with maximal minimum distance. We give a minimum-distance decoding algorithm which requires O((n-k)k^3) operations over an extension field F_{q^k}. Our algorithm is more efficient than the previous ones in the literature, when the dimension k of the codewords is small with respect to n. The decoding algorithm takes advantage of the algebraic structure of the code, and it uses original results on minors of a matrix and on the factorization of polynomials over finite fields

TOLERANCE INCREASE OF AUTOMATIC WEIGHT MEASURING SYSTEMS ON THE BASIS OF SYSTEMATIC ERROR ELIMINATION

Rising of accuracy of automated weighting systems' functioning can be achieved by identifying and exclusion of systematic errors. Methods of reducing of temperature error's impact and design procedure of thermocompensation elements of strain-gauge bridges are considered

SIMULATION OF OPEN MECHANISMS FOR THE ADDITIVE PROCESS WELD PLASTICS

This article discusses: model of the two-link mechanism; generalized scheme of mechatronic simulation model of 3D-printer with the positioning units of electric DC; mathematical model of the actuator of the printer unit in the form of a system of differential equations; 3D-printer programming model implemented in the Matlab-Simulink environment using the c standard library blocks and SimMechanics library; virtual (animated) 3D printer model on the basis of the library Simulink 3D Animation, supports the visualization of the movements of the designed mechanism of the basic units. We present the initial data and the results of simulation of 3D-printer type Scara as a waveform positioning actuator (extruder) in the manufacture of test items by fusing plastic

Typification of the terrigenous reservoirs of Tevlinsko-Russkinskoye field Upper Jurassic horizon and features of the anisotropy of their filtration-capacitive properties

On the basis of a detailed sedimentological analysis of the Upper Jurassic horizon Yu 1 of Sredneobskaya group of fields their facial, macro-and microheterogeneity is revealed, that determines their complicated structure. The typification of productive silty sand deposits of horizon was carried out. It was noted that Information about the anisotropy of the reservoir allows to substantiate the application of bed stimulation methods. The problems of the anisotropy of the Investigated sediments are considered

Spatially coupled LDPC coding in cooperative wireless networks

This paper proposes a novel technique of spatially coupled low-density parity-check (SC-LDPC) code-based soft forwarding relaying scheme for a two-way relay system. We introduce an array-based optimized SC-LDPC codes in relay channels. A more precise model is proposed to characterize the residual noise on the soft symbols, using a pre-calculated look-up table at the destination. This requires less signaling overhead compared to previous soft noise modeling techniques. We also introduce a variance correction factor to provide a rectification to the equivalent total noise variance at the destination. Finally, we propose an appropriate log likelihood ratio (LLR) former at the destination which is tailored to the proposed soft parity generation technique. Simulation results demonstrate that the proposed relay protocol yields an improved bit error rate (BER) performance compared to competing schemes proposed in the literature

Combination drug studies: nitroimidazole potentiation of melphalan activity in vivo. Abstr.

On the basis of a detailed sedimentological analysis of the Upper Jurassic horizon Yu 1 of Sredneobskaya group of fields their facial, macro-and microheterogeneity is revealed, that determines their complicated structure. The typification of productive silty sand deposits of horizon was carried out. It was noted that Information about the anisotropy of the reservoir allows to substantiate the application of bed stimulation methods. The problems of the anisotropy of the Investigated sediments are considered