Network architecture of the calibration benchof thermal imaging and spectral devicesfor monitoring high-temperature synthesis of materials

The work is devoted to changing the structure of the software of the temperature calibration stand for organizing interaction with networked intelligent devices for spectral and thermal imaging control. On the basis of.Net technology and the C # programming language, a network service of the PSH-2035 source was created, which controls the current of the TRU-1100-2350 model temperature lamp. The service translates network messages with temperature values ​​in ASCII commands of the source with the corresponding lampcurrent level and sends them for execution via the RS-232 interface. The reverse conversion allows the network client to obtain information about the current state of the lamp. The transfer of messages between the network service and the client is carried out using a unique protocol based on TCPtransport. The server side of the software uses the MySQL DBMS as an operator for a structured storage of batch jobs and a temperature lampoperation log, synchronizes its own computing platform with the world time system via the NTPprotocol and provides a GUID to a calibrated smart device for consistent identification of records in specialized databases. The stand software supports the multicast protocol for the simultaneous calibration of several devices.

FPGA Implementation of high speed-low energy RNS based Reconfigurable-FIR Filter for Cognitive Radio Applications

The Finite impulse response (FIR) filter is prominently employed in many digital signal processing (DSP) systems for various applications. In this paper, we present a high-performance RNS based FIR filter design for filtration in SDR applications. In general, the residue number system (RNS) gives significant metrics over FIR implementation with its inherent parallelism and data partitioning mechanism. But with increased bit width cause considerable performance trade-off due to both residue computation and reverse conversion. In this paper optimized Residue Number System (RNS) arithmetic is proposed which includes distributed arithmetic based residue computation during RNS multiplication followed by speculative delay optimized reverse computation to mitigate the FIR filter trade-off characteristics with filter length. The proposed RNS design utilizes built-in RAMs block present in the devices of FPGA to accomplish the process of reverse conversion and to store pre-computational values. A distinctive feature of the proposed FIR filter implementation with core optimized RNS is to minimize hardware complexity overhead with the improved operating speed. Initially, fetal audio signal detection is carried out to validate the functionality of FIR filter core and FPGA hardware synthesis is carried out for various input word size and FIR length. From the experimental, it is proved that the trade-off exists in conventional RNS FIR over filter length is narrow down along with considerable complexity reduction with our proposed optimized RNS system.

New Algorithm for Reverse Conversion in Residue Number System

Reverse conversion is an important exercise in achieving the properties of Residue Number System (RNS). Current algorithms available for reverse conversion exhibits greater computational overhead in terms of speed and area. In this paper, we have developed a new algorithm for reverse conversion for two-moduli set and three-moduli set that are very simple and with fewer multiplicative inverse operations than there are in the traditional algorithms like the Chinese Remainder Theorem (CRT) and Mixed Radix Conversion (MRC).

A Multifunctional Unit For Reverse Conversion and Sign Detection Based on The 5-Moduli Set

The high dynamic range residue number system (RNS) five-moduli { 2 2n , 2 n + 1, 2 n − 1, 2 n + 3, 2 n − 3 } has been recently introduced as an arithmetically balanced five-moduli set for computation-intensive applications on wide operands such as asymmetric cryptography algorithms. The previous dedicated design of RNS components for this moduli set is just an unsigned reverse converter. In order to utilize of the moduli set { 2 2n , 2 n + 1, 2 n − 1, 2 n + 3, 2 n − 3 } in applications handling with signed numbers, two important components are needed: Sign Detector and Signed Reverse Converter. However, having both of these components results in high hardware requirements which makes RNS impractical. This paper overcomes to this problem by designing a unified unit which can perform both signed reverse conversion as well as sign detection through the reuse of hardware. To the authors knowledge, this is the first attempt to design sign detector for a moduli set including 2n±3 moduli. In order to achieve a hardware-amenable design, we first improved the performance of the previous unsigned reverse converter for the moduli set { 2 2n , 2 n + 1, 2 n − 1, 2 n + 3, 2 n − 3 }. Then, we extract a sign detection method from the structure of the reverse converter. Finally, we make the unsigned reverse converter to sign converter through the use of the extracted sign signal from the reverse converter. The experimental results shown that the proposed multifunctional unit has relatively the same performance in terms of area, delay and power-consumption than the previous unsigned reverse converter for the set { 2 2n , 2 n + 1, 2 n − 1, 2 n + 3, 2 n − 3 } while it can perform two complex signed operations.

Design of an Isolated Bidirectional Symmetric Resonant Converter

An isolated type bidirectional resonant converter is presented in this paper. Using a dual active bridge as the main topology and integrating symmetric resonant mechanism, the developed converter features an isolated type bidirectional resonant converter with bidirectional power conversion and electrical isolation capabilities to ensure working security and stability. The application of a symmetric resonant scheme enables the control range of input and output voltages to be widened and achieves soft switching during bidirectional power conversion. A converter design process covering all the bases is exhibited in this work. With the digital signal processor (DSP) TMS320F28335 being employed as the control core, the developed isolated bidirectional resonant converter can effectively handle the power conversion between the simulated 400 V DC grid and the energy storage battery ranging from 280 to 403 V. Based on a 1 kW capacity design, the test data reveal that the forward conversion efficiency from grid to battery can reach 93.25%, and the reverse conversion efficiency from battery to grid is as high as 94.60%.

IMAGINATION AS A BORDERLINE OF UNDERSTANDING: THE FUNCTION OF IMAGINATION IN THOUGHT EXPERIMENTS

Статья посвящена эпистемологии воображения и мысленного эксперимента. Отправной точкой является метафорическое определение мысленного эксперимента как «лаборатории разума», данное Дж. Брауном. Отталкиваясь от этого оксюморона, соединяющего экспериментальную (конкретно- инженерную) и теоретическую деятельность в одно понятие, проводится исследование воображения как средства осуществления мысленных экспериментов. В начале рассматриваются эпистемологические отношения лабораторного и мысленного эксперимента в связи с характерной для современного модельного подхода в философии науки тенденцией сближать эти методы на основании структурно-функционального сходства теоретического моделирования и экспериментальных практик. Демонстрируется, что мысленный эксперимент не является экспериментом и решает иные задачи, связанные не столько с производством предметного знания (о реальности), сколько с поиском самих способов опредмечивания задач и прояснением их отношений между собой. Для этого используется концепт themata, предложенный Дж. Холтоном в его концепции «научного воображения». Неясно определенные Холтоном themata интерпретируются как машины конвертации, позволяющие схематизировать перцептивное содержание и придавать ему модельную форму с сохранением момента наглядности, т. е. возможности обратной конвертации (движения от теоретической модели к эксперименту). Мысленные эксперименты, в свою очередь, обнаруживают границы и характер отношений между themata. Для прояснения механизма работы воображения с ненаглядными объектами использована теория прототипов Э. Рош. Выстраиваемая воображением схема опредмечивания в этой ситуации основывается на семиотической связи ненаглядного означающего с наглядным означаемым (прототипом), а семиозис обеспечивается «натурализацией» метафоры, набрасывающей связанную с прототипом схему опредмечивания (правила построения образов) на не размеченную (новую) или требующую обновления разметки в связи с новыми обстоятельствами предметную область (задачу). Работающее таким образом воображение является естественной границей понимания – понять значит вообразить, а мысленный эксперимент позволяет картографировать работу воображения и с помощью полученных карт анализировать принципы его работы. Поэтому, хотя мысленный эксперимент не позволяет решить вопрос об эмпирической адекватности полученных в нем результатов, он репрезентативен и надежен при исследовании эпистемологических установок и связанных с ними машин конвертации, т. е. воображения. Карта ничего не говорит о существовании изображенной на ней местности, но зато многое способна рассказать об устройстве воображения картографа. The article is devoted to the epistemology of imagination and thought experiment. The starting point is the metaphorical definition of a thought experiment as a "laboratory of the mind" given by J. Brown. Based on this oxymoron, which combines experimental (material and manipulative) and theoretical activity into one concept, a study of imagination is carried out as a means for providing mental experiments. Firstly, the epistemological relations of the laboratory and thought experiment are examined in connection with the approach to bring these methods closer together on the basis of the structural and functional similarity of theoretical modeling and experimental practices, which is characteristic for the modern model approach in the philosophy of science. It is demonstrated that a thought experiment is not an experiment and solves different problems associated not with the production of concrete knowledge (about reality), but rather with the search for ways to objectify the scientific problems themselves and clarify their relationships with each other. For this, the themata concept proposed by J. Holton in his theory of “scientific imagination” is used. Themata, which are not clearly enough defined by Holton, are interpreted as machines of conversion that allow one to schematize perceptual content and give it a model-like form while maintaining the moment of visibility, i.e. the possibility of reverse conversion (the movement from a theoretical model to an experiment). Thought experiments, in turn, reveal the boundaries and nature of the relationship between themata. To clarify the mechanism of how the imagination works with non-visualizable objects, the prototype theory of E. Rosch was engaged. The imagination’s scheme of objectification in this context is based on the semiotic connection of the non-visualizable signifier with the visible signified (prototype), and semiosis is ensured by the “naturalization” of the metaphor, which throws the objectification scheme (rules for constructing images) associated with the prototype onto an unmarked (new) or requiring markup updating because of new circumstances subject area (task). The work of imagination here is the natural boundary of understanding – to understand is (at least to have an ability) to imagine, and a thought experiment allows you to map the work of the imagination and use the obtained maps to analyze the principles of its work. Therefore, although a thought experiment does not allow solving the question of the empirical adequacy of the results obtained in it, it is representative and reliable in the study of epistemological attitudes and associated conversion machines, i.e. imagination. The map does not say anything about the existence of the terrain depicted on it, but much can tell about the cartographer’s imagination.

RNS Bases in Computer Architecture for DNA Sequence Application

In this paper we present an RNS algorithm and architecture implementation of gene sequence applications based on an existing RNS arithmetic algorithm. Investigation was made on RNS application and its inherent arithmetic advantages; data conversion algorithm from Decimal/Binary to RNS; the forward conversion; Conversion from RNS to Binary/Decimal; the reverse conversion using the Chinese remainder theorem CRT, conversion from RNS to mixed radix form with capability for effective computation performance, and analysis of Smith Waterman Algorithm based on DNA sequence computing. Its limitations and open issues for future research were highlighted.