Journal articles on the topic 'Digital communications Reliability Mathematics'
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1
Yu, Liang Jun, Li Hua Sun, and Cui Cui Huang. "Simulation Design on Kalman Filter with Mobile and No-Intersymbol Interference System Based on MATLAB." Applied Mechanics and Materials 716-717 (December 2014): 1267–71. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.1267.
Abstract:
Intersymbol Interference (ISI) problem is one of the main factors affecting the baseband transmission performance of mobile communication’s digital signal which can not only reduce the transmission quality of the information but also can result in misinformation and false pass of information and provide troubles to the user and communications. In order to minimize the error rate, we propose a new digital equalization filter and establish the basic model of the digital filter and introduce non-linear Kalman observation equation and the state equation into the model and design partial differential mathematical model of the Kalman filter and develop MATLAB solver based on the mathematical model. In order to verify the validity and reliability of Kalman filter algorithms and mathematical procedures designed in this paper, it uses MATLAB toolbox to simulate the filter of mobile crosstalk signal and obtains amplitude-frequency characteristics and time-domain characteristics before and after filtering. By comparison, we can see that the filter can eliminate the high frequency crosstalk signal which provides technical reference for the study of the problem of crosstalk between the mobile communication codes.
2
Alexeyev, Alexander A., and Michael M. Green. "Secure Communications Based on Variable Topology of Chaotic Circuits." International Journal of Bifurcation and Chaos 07, no. 12 (December 1997): 2861–69. http://dx.doi.org/10.1142/s0218127497001941.
Abstract:
A new technique for synchronization of chaotic circuits is proposed. This technique, based on varying a circuit's overall topology rather than varying a set of continuous parameters, offers a possible resolution to the tradeoff between security and synchronizability inherent in existing chaotic systems. The encryption key is represented by a mapping from a set of nodes to a set of switches in the circuit. This method significantly improves reliability and can be easily interfaced to digital control circuits.
3
Kryukova, Nina I., Alexey A. Chistyakov, Tatiana I. Shulga, Leyla B. Omarova, Tatiana V. Tkachenko, Alexey K. Malakhovsky, and Nigina S. Babieva. "Adaptation of higher education students’ digital skills survey to Russian universities." Eurasia Journal of Mathematics, Science and Technology Education 18, no. 11 (October 19, 2022): em2183. http://dx.doi.org/10.29333/ejmste/12558.
Abstract:
Digital skills are essential for a technologized society. For younger generations, it has become almost necessary to have such skills. This study focuses on a valid and reliable measurement tool to determine the digital skills of university students. The research was carried out with the participation of a total of 463 university students. Exploratory factor analysis and confirmatory factor analysis were conducted to investigate the validity and reliability of the digital skills survey. Consequently, research on the validity and reliability of the digital skills survey in the Russian environment was conducted. 25 items and six factors (access to and management of digital content, digital empathy, use of digital means, digital safety, communication of digital content, creation of digital content) were identified after the analysis. Future research should employ the adapted survey to assess the level of students’ digital skills. In addition, the survey’s validity may be analyzed in the context of other cultures.
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Резник, Александр Львович, Александр Васильевич Тузиков, Александр Анатольевич Соловьев, and Андрей Владиславович Торгов. "Intellectual program support for the analysis of random digital images." Вычислительные технологии, no. 5(23) (November 2, 2018): 70–81. http://dx.doi.org/10.25743/ict.2018.23.5.007.
Abstract:
Описаны специализированные методы, разработанные авторами для решения задач обработки случайных точечных изображений, в основе которых лежат построение программных систем для проведения трудоемких аналитических выкладок и использование различных расширений классических чисел Каталана. Приведены примеры эффективного применения предложенных методов для расчета точных аналитических формул, описывающих вероятность безошибочного считывания случайных дискретных полей и цифровых изображений, проводимого сканирующей апертурой с ограниченным числом пороговых уровней. During the digital registration and subsequent processing of fast dynamic processes which have different physical nature, determination for the unknown coordinates of the point-pulse sources becomes one of the most time-consuming and algorithmically complex problems. It happens since it is necessary to satisfy the requirements for accuracy and reliability of registration in such tasks. Finding the exact analytical relationships connecting reliability of the registration with the characteristics of the physical process and the output parameters of the processing system is a problematic and very difficult task in most practically important cases, for example in the case of power of random radiation source and the size of the analyzed field. This paper proposes the methods developed by the authors for calculating the exact analytical formulas and relationships that describe the probability of error-free readout of a random point-pulse field when registration procedure is performed by a scanning aperture with a limited number of threshold levels. The specialized methods, based on the construction of software systems for laborious analytical calculations and the use of various extensions of the classical Catalan numbers are offered. In particular, procedures have been built for multidimensional integration over convex polyhedral areas with freely movable boundaries in n-dimensional space. Two probabilistic problems are also formulated, leading to an extension of the classical Catalan numbers, which turned out to be more convenient to formulate and solve in a symbolic-linguistic form.
5
Babchuk, S. M., and B. S. Nezamay. "MATHEMATICAL MODEL OF SPEED DATA TRANSMISSION FROM SEGMENT LENGTH OF SPECIALIZED G3-PLC DIGITAL NETWORK." METHODS AND DEVICES OF QUALITY CONTROL, no. 2(43) (December 24, 2019): 120–27. http://dx.doi.org/10.31471/1993-9981-2019-2(43)-120-127.
Abstract:
Power Line Communication (PLC) systems are actively evolving and becoming more and more widespread worldwide. They are used in the automation of technological processes, the organization of video surveillance systems and to control the "smart" home. The G3-PLC provides high-speed and high-reliability long-distance communication over the existing power grid. Due to the fact that G3-PLC provides the ability to transmit data including through transformers, infrastructure costs are reduced. In addition, the G3-PLC network can support IPv6, which will allow the G3-PLC to easily integrate into common IPv6-based communication lines in the future. G3-PLC-based bilateral communications networks can provide grid operators with intelligent monitoring and control capabilities. Operators will be able to monitor electricity consumption across the network in real time, apply variable tariff schedules and set limits on electricity consumption. In turn, consumers will be able to control electricity consumption in real time. By using variable tariffs, users can reduce their electricity consumption during peak use. The G3-PLC dedicated digital network can be used in process automation systems where traditional or traditional data transmission is difficult or impossible. As a result of the research, a polynomial mathematical model was found that best reflects the change in data rate depending on the length of the G3-PLC network segment. It is also found that for the simplified calculation, a linear model determined during the studies can be used. The established mathematical models of data transmission rate dependence on the segment length of the G3-PLC dedicated digital network will contribute to better design of G3-PLC-based networks.
6
Timofeev, A. L., and A. Kh Sultanov. "Building a noise-tolerant code based on a holographic representation of arbi-trary digital information." Computer Optics 44, no. 6 (December 2020): 978–84. http://dx.doi.org/10.18287/2412-6179-co-739.
Abstract:
The article considers a method of error-correcting coding based on the holographic representation of a digital signal. The message encoding process is a mathematical simulation of a hologram created in virtual space by a wave from an input signal source. The code word is a hologram of a point, it is also a one-dimensional zone ruler that carries information about the input data block in the form of an n-bit code of the coordinate of the center of the Fresnel zones. It is shown that the holographic representation of the signal has significantly greater noise immunity and allows you to restore the original digital combination when most of the code message is lost and when the encoded signal is distorted by noise several times higher than the signal level. To assess the noise immunity, the reliability of information transmission over the channel with additive white Gaussian noise is compared using the Reed-Solomon code, the Reed-Muller code, the majority code, and the holographic code. The comparative efficiency of codes in the presence of packet errors caused by the effect of fading due to multipath propagation in radio channels is considered. It is shown that holographic coding provides the correction of packet errors regardless of the length of the packet and its location in the codeword. The holographic code is of interest for transmitting information over channels with a low signal-to-noise ratio (space communications and optical communication systems using free space as a transmission channel, terrestrial, including mobile radio communications), as well as for storing information in systems exposed to ionizing radiation.
7
Wang, Yuhang. "Image 3D Reconstruction and Interaction Based on Digital Twin and Visual Communication Effect." Mobile Information Systems 2022 (July 23, 2022): 1–12. http://dx.doi.org/10.1155/2022/8510369.
Abstract:
With the continuous development of multimedia technology and electronic information technology, the application of 3D images has become more and more extensive, and 3D reconstruction and interactive technology have also received more and more attention from researchers. Digital twin (DT for short) is a technology that makes full use of digital twin models and real-time monitoring data to complete real-time mapping of the real world in the digital world. Visual communication (CV for short) design is a design that is expressed and communicated to the audience through a visual medium. 3D reconstruction refers to the mathematical process and computer technology that uses 2D projection to recover 3D information of an object. This essay aims to study an image 3D reconstruction and interaction method based on DT and CV and analyze the practical feasibility and practical effect of this method. This essay proposes a model for image 3D reconstruction and interaction, which combines DT and CV effects and conducts a system simulation test for the model. The simulation is carried out on the three-dimensional reconstruction of the craniomaxillofacial area in medicine, and the reconstruction process is relatively smooth. And the final simulation test shows that the maximum CPU usage rate of the system during the rebuilding process is about 50%, which is relatively stable. The average CPU usage is about 30%, the overall system energy consumption is low, the lower limit of the overall SNR of the image is 57, and the upper limit is 62. The image quality of the reconstruction process is good, and the overall system reliability is high, which is feasible.
8
Tyncherov, Kamil T., Vyacheslav Sh Mukhametshin, Victor A. Krasnobaev, and Maria V. Selivanova. "Error Control Coding Algorithms in High Reliability Telemetry Systems." Symmetry 14, no. 7 (July 1, 2022): 1363. http://dx.doi.org/10.3390/sym14071363.
Abstract:
In the oil and gas industry, in the process of drilling support (geosteering) and well telemetry, there is a problem of transmitting reliable information via wireless communication channels. The quality of such communication, as a rule, suffers due to the presence of errors caused by interference. As the depth of the well increases, the problem becomes more extensive. In order to solve the problem, it is proposed to choose noise-resistant coding in the system of residual classes. This system parallelizes the execution of arithmetic operations, has corrective abilities and organically adapts to the neural network basis of intelligent field management. At the same time, there are constraining factors for the mass application of the RNS; for example, difficulties in implementing non-modular procedures, forward and reverse coding, and some difficulties in identifying and correcting errors. That is why the task of improving the RNS seems relevant not only for oil and gas complexes, but also for any digital signal processing applications focused on intelligent neural network management on the basis of non-positional computing. The material of the article is limited to the study of the noise immunity of linear codes of the deduction system and the development of algorithms for detecting and correcting errors.
9
Ben-Ami, Lee, and Ido Bachelet. "A Thought-Operated Digital Random-Access Memory." Computational Intelligence and Neuroscience 2019 (June 9, 2019): 1–8. http://dx.doi.org/10.1155/2019/9684140.
Abstract:
The capacity and reliability of biological memory could be exceeded by a constantly growing flux of information to remember and operate by. Yet, our memory is fragile and could be easily impaired, and the prevalence of memory disorders is increasing in correlation with the population’s mean age. As expected, auxiliary memory devices (such as writing pads and computers) are abundant but are operated indirectly using significant effort compared with biological memory. We report a working prototype of a simplified, 4 KB random-access memory (RAM) that can be written to or read from using thought and could be embedded more seamlessly than other artificial memory aids. The system analyses EEG signals to extract attention levels, which trained subjects can use to write messages into an RFID sticker, or read from it on a display. We describe basic modes of using memory by a single subject, emulate common forms of social communication using this system, and highlight new forms of social usage and allocation of memories that are linked to specific persons. This preliminary prototype highlights the technical feasibility and the possibilities of implantable thought-operated memory devices and could be developed further to provide seamless aid to people suffering from memory disorders in the near future.
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Liu, Xiyang, Lei Fan, Liming Wang, and Sha Meng. "Multiobjective Reliable Cloud Storage with Its Particle Swarm Optimization Algorithm." Mathematical Problems in Engineering 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/9529526.
Abstract:
Information abounds in all fields of the real life, which is often recorded as digital data in computer systems and treated as a kind of increasingly important resource. Its increasing volume growth causes great difficulties in both storage and analysis. The massive data storage in cloud environments has significant impacts on the quality of service (QoS) of the systems, which is becoming an increasingly challenging problem. In this paper, we propose a multiobjective optimization model for the reliable data storage in clouds through considering both cost and reliability of the storage service simultaneously. In the proposed model, the total cost is analyzed to be composed of storage space occupation cost, data migration cost, and communication cost. According to the analysis of the storage process, the transmission reliability, equipment stability, and software reliability are taken into account in the storage reliability evaluation. To solve the proposed multiobjective model, a Constrained Multiobjective Particle Swarm Optimization (CMPSO) algorithm is designed. At last, experiments are designed to validate the proposed model and its solution PSO algorithm. In the experiments, the proposed model is tested in cooperation with 3 storage strategies. Experimental results show that the proposed model is positive and effective. The experimental results also demonstrate that the proposed model can perform much better in alliance with proper file splitting methods.
11
Bykova, Svetlana S., Elena A. Kuvaldina, Svetlana V. Maslova, and Alla E. Krinisyna. "Formation of IСT competences of youth in the system of non-formal education." Perspectives of Science and Education 48, no. 6 (December 31, 2020): 67–77. http://dx.doi.org/10.32744/pse.2020.6.6.
Abstract:
The relevance of the study is due to the need to form competences in sphere of information and communications technology (hereinafter – ICT competences) among youth leaders, because they transfer this experience of using the Internet and digital technologies to other young people. Within the framework of formal education, this problem is not given necessary attention; accordingly, the non-formal education system has the right to compensate for this shortcoming through the implementation of additional programs that form IСT competences in young people. The purpose of this study is to substantiate theoretically and test experimentally the effectiveness of the program for the formation of IСT competences of youth leaders through the organization of training events in the system of non-formal education. The leading research method was a pedagogical experiment, in which 15 leaders of youth non-profit organizations from 8 European countries took part. The participants were pre-selected, which involved the analysis of practical experience in the field of digital technologies and the presence of motivation to learn. The questionnaire method was used in this study (online self-assessment tool “Digital Skills Accelerator”). The questionnaire is based on five areas of practical use of ICT competences: general information literacy, communication, digital product creation, information security, and solution of technical problems. To confirm the reliability of the data, the method of mathematical statistics (T-Wilcoxon test) was used. The results of the pedagogical experiment show that significant changes have occurred in terms of the indicators "General information literacy", "Communication", "Creation of digital products" (at the significance level p = 0.01), as well as "Information security" (at the significance level 0.05). There were no significant changes in the indicator “Solving technical problems”. The article presents the experience of implementing the training program for the Digital youth cafe: online tools for communication and fundraising strategies in the youth field. During this project, a blog on the implementation and results of the project; online fundraising and communication campaigns, open webinars on project topics were created. This study proved the effectiveness of the formation of ICT competences of youth leaders in the system of non-formal education through the implementation of an educational project. The materials of this article can be useful for workers and leaders of youth organizations, as well as for specialists in the field of non-formal education of youth.
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Dahunsi, Folasade M., Olawumi A. Abdul-Lateef, Adegoke O. Melodi, Akinlolu A. Ponnle, Oluwafemi A. Sarumi, and Kazeem A. Adedeji. "Smart Grid Systems in Nigeria: Prospects, Issues, Challenges and Way Forward." FUOYE Journal of Engineering and Technology 7, no. 2 (June 30, 2022): 183–92. http://dx.doi.org/10.46792/fuoyejet.v7i2.781.
Abstract:
The ability of the power system to deliver to its consumer electrical energy at an expected level of reliability is correlated with the economic development of a country. The Nigerian power system faces many challenges, varying from overdue infrastructure maintenance, obsolete tools and appliances, insufficient electricity supply, corruption, etc. A gradual shift from manual to smart digital technologies include; smart metering, distributed generation (renewable energy and microgrid), and management using Information and Communication Technology (ICT) tools. In response, research, investments, and upgrade to the power sector are fundamental. This paper discusses and analyses the various smart grid technologies utilised in the Nigerian power system with their effects, impacts, deployment, and integration into the traditional Nigerian power grid. Also discussed are issues and challenges of smart grid deployment and ways of mitigating these challenges.
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Zardari, Nawaz Ali, Razali Ngah, Omar Hayat, and Ali Hassan Sodhro. "Adaptive mobility-aware and reliable routing protocols for healthcare vehicular network." Mathematical Biosciences and Engineering 19, no. 7 (2022): 7156–77. http://dx.doi.org/10.3934/mbe.2022338.
Abstract:
<abstract> <p>Healthcare vehicles such as ambulances are the key drivers for digital and pervasive remote care for elderly patients. Thus, Healthcare Vehicular Ad Hoc Network (H-VANET) plays a vital role to empower the digital and Intelligent Transportation System (ITS) for the smart medical world. Quality of Service (QoS) performance of vehicular communication can be improved through the development of a robust routing protocol having enhanced reliability and scalability. One of the most important issues in vehicular technology is allowing drivers to make trustworthy decisions, therefore building an efficient routing protocol that maintains an appropriate level of Quality of Service is a difficult task. Restricted mobility, high vehicle speeds, and continually changing topologies characterize the vehicular network environment. This paper contributes in four ways. First, it introduces adaptive, mobility-aware, and reliable routing protocols. The optimization of two routing protocols which are based on changing nature topologies of the network used for vehicular networks has been performed, amongst them, Optimized Link State Routing (Proactive) and Ad-hoc on Demand Distance Vector (Reactive) are considered for Packet Delivery Ratio (PDR) and throughput. Furthermore, Packet Loss Ratio (PLR), and end-to-end (E2E) delay parameters have also been calculated. Second, a healthcare vehicle system architecture for elderly patients is proposed. Third, a Platoon-based System model for routing protocols in VANET is proposed. Fourth, a dynamic channel model has been proposed for the vehicle to vehicle communication using IEEE8011.p. To optimize the QoS, the experimental setup is conducted in a discrete Network Simulator (NS-3) environment. The results reveal that the AODV routing protocol gives better performance for PDR as well as for PLR and the communication link established is also reliable for throughput. Where OLSR produces a large average delay. The adoptive mobility-aware routing protocols are potential candidates for providing Intelligent Transportation Systems with acceptable mobility, high reliability, high PDR, low PLR, and low E2E delay.</p> </abstract>
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Kobozeva, Alla, and Ivan Bobok. "DEVELOPMENT OF A STEGANOGRAPHIC METHOD RESISTANT TO ATTACKS AGAINST BUILT-IN MESSAGE." Information systems and technologies security, no. 1 (2) (2020): 16–22. http://dx.doi.org/10.17721/ists.2020.1.16-22.
Abstract:
Features of modern network communications make it necessary to use in the organization of the hidden channel communication of steganographic algorithms that are resistant to loss compression, and leaving the tasks of developing new effective steganographic methods are relevant. The paper develops a new block steganographic method, which is resistant to attacks against the built-in message, including strong attacks. This method preserves the reliability of the perception of the formed quilting due to the mathematical basis used. It is based on a general approach to the analysis of the state and technology of information systems functioning, matrix analysis, perturbation theory. A digital image is treated as a container. The bandwidth of a hidden link that is built using the developed method is equal to n-2 bpp, n×n is the size of the blocks of the container that are obtained by the standard breakdown of its matrix. Such bandwidth is achieved with any algorithmic implementation of the method. Additional information is a binary sequence, it is the result of pre-coding of the information that is hidden. The embedding of additional information is done by using formal container matrix parameters that are insensitive to perturbation. These are singular values of its small blocks (n≤8). Increasing the maximum singular value of the block, which occurs when embedding additional information, leads to the stability of the method to the perturbing action and to ensure the reliability of the perception of the hip. The magnitude of the increase in the maximum singular value is determined using the values obtained by raising the singular values of the block to a natural degree k. Algorithmic implementation of the method requires additional studies to determine the parameter k.
15
Kiforuk, Sergii. "Devising a method to control the operational quality and reliability of fiber-optical communication lines." Eastern-European Journal of Enterprise Technologies 5, no. 3 (113) (October 31, 2021): 92–100. http://dx.doi.org/10.15587/1729-4061.2021.237583.
Abstract:
The lack of recommendations in the normative and technical documentation related to fiber-optic communication lines (FOCL) for assessing their technical condition necessitated devising a method to control the lines' quality and reliability of operation. The method creates the basis for calculating the quality and reliability indicators of FOCL operation and suggests measures to improve them. It determines the methods of control, as well as the acquisition, accounting, and analysis of damage statistics with and without interruption of communication. The graphic sequence of implementation of the stages of the method demonstrates that resolving the task to control these indicators should involve: – managing the acquisition and actual acquisition of operational data on damages (the causes, nature, quantity, the duration of communication breakdown and complete elimination of damage); – determining the quality and reliability indicators of FOCL operation annually; – analysis of the obtained results and the development (correction) of measures to comply with the norms of these indicators; – the implementation of measures to comply with the norms of quality and reliability of FOCL operation (if necessary). Based on the operational data from a line operator acquired over three years in the specified climatic zone (a cable of the type OKLBg-3 DA12-3×4E-0.4F3.5/0.22N18-12/0), the methodical component of the method was examined. The obtained results on the operational quality (damage density, average damage duration, break (downtime) of communication) and reliability indicators (FOCL readiness factor) of a subscriber access network without reservation showed that the line had low efficiency. The communication breakdown over three years amounted to K=12,569.8 stream∙hours. The downtime at this volume of digital stream∙hours has led to significant economic losses. Line operators have been given recommendations for the proper FOCL operation and ensuring a normalized value of the line readiness coefficient. To this end, it is necessary to reduce the time to re-link and prolong the line's failure-free operation
16
Zeng, Pingping, Lianhui Tong, Yaru Liang, Nanrun Zhou, and Jianhua Wu. "Multitask Image Splicing Tampering Detection Based on Attention Mechanism." Mathematics 10, no. 20 (October 17, 2022): 3852. http://dx.doi.org/10.3390/math10203852.
Abstract:
In today’s modern communication society, the authenticity of digital media has never been of such importance as it is now. In this aspect, the reliability of digital images is of paramount importance because images can be easily manipulated by means of sophisticated software, such as Photoshop. Splicing tampering is a commonly used photographic manipulation for modifying images. Detecting splicing tampering remains a challenging task in the area of image forensics. A new multitask model based on attention mechanism, densely connected network, Atrous Spatial Pyramid Pooling (ASPP) and U-Net for locating splicing tampering in an image, AttDAU-Net, was proposed. The proposed AttDAU-Net is basically a U-Net that incorporates the spatial rich model filtering, an attention mechanism, an ASPP module and a multitask learning framework, in order to capture more multi-scale information while enlarging the receptive field and improving the detection precision of image splicing tampering. The experimental results on the datasets of CASIA1 and CASIA2 showed promising performance metrics for the proposed model (-scores of 0.7736 and 0.6937, respectively), which were better than other state-of-the-art methods for comparison, demonstrating the feasibility and effectiveness of the proposed AttDAU-Net in locating image splicing tampering.
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Cheng, Xingguo, and Chaomeng Chen. "Vehicle Detection System with Statistical Functions Based on 3-Axis Anisotropic Magnetoresistive Using Wireless Communication Technology." Journal of Computational and Theoretical Nanoscience 17, no. 7 (July 1, 2020): 2876–81. http://dx.doi.org/10.1166/jctn.2020.6749.
Abstract:
In terms of current issues that the sensor’s output signal drifts along with the surrounding strong magnetic field by using the single or dual-axis analog anisotropic magnetoresistive (AMR) sensor in the traffic flow detection, a traffic flow detection system based on ZigBee wireless sensor network is developed and a novel approach by exercising the new digital three-axis AMR sensor to detect the traffic flow is proposed to solve these issues as mentioned above. Using Single Chip Microcomputer (SCM) control technique and utilizing wireless transmitting, an effective algorithm is designed. The algorithm makes it possible to classify vehicle, calculate vehicle speed and count vehicle, in the meantime it provides a reliable and efficient method to collect intelligent transportation data. Even more important, the algorithm has a statistical functions based on MATLAB. The experimental result shows that the novel method has much better measurement accuracy, reliability and redundancy than single or dual-axis method.
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Isaev, E. A., D. V. Pervukhin, V. V. Kornilov, P. A. Tarasov, A. A. Grigoriev, Y. V. Rudyak, G. O. Rytikov, and V. G. Nazarov. "Platelet Adhesion Quantification to Fluorinated Polyethylene from the Structural Caracteristics of Its Surface." Mathematical Biology and Bioinformatics 14, no. 2 (August 9, 2019): 420–29. http://dx.doi.org/10.17537/2019.14.420.
Abstract:
It is necessary not only to develop information and communication infrastructures and algorithms for distributed and cloud processing of data coming from all kinds of sensors and sensors, but also to design new materials that enable the production of safe, effective and accessible to the general public test systems when creating digital health saving systems as part of the development of modern electronic medical monitoring technologies. An analysis of the market for consumables intended for use in rapid diagnostic devices shows that disposable test strips on a flexible polymer base with high biological resistance to the effects of blood components are most in demand. It has been shown that surface modification of polyethylene by fluorination, sulfonation and plasmification methods provides a significant reduction in platelet adhesion to processed polymer films. It was also suggested that the surface energy of the modified material has a determining effect on its hemocompatibility.This work is devoted to the formation of an analytical model of the surface morphology of fluorinated polyethylene, as well as a quantitative analysis of the structural and functional relationships between the parameters of the morphological model and the resistance of the material to platelet adhesion. The widespread use of the discussed approach to increasing the thromboresistance of polymeric materials will increase the reliability of glycemic analyzes performed by patients on their own using portable express diagnostic systems (glucometers).
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Álvarez, José Luis, Juan Daniel Mozo, and Eladio Durán. "Analysis of Single Board Architectures Integrating Sensors Technologies." Sensors 21, no. 18 (September 21, 2021): 6303. http://dx.doi.org/10.3390/s21186303.
Abstract:
Development boards, Single-Board Computers (SBCs) and Single-Board Microcontrollers (SBMs) integrating sensors and communication technologies have become a very popular and interesting solution in the last decade. They are of interest for their simplicity, versatility, adaptability, ease of use and prototyping, which allow them to serve as a starting point for projects and as reference for all kinds of designs. In this sense, there are innumerable applications integrating sensors and communication technologies where they are increasingly used, including robotics, domotics, testing and measurement, Do-It-Yourself (DIY) projects, Internet of Things (IoT) devices in the home or workplace and science, technology, engineering, educational and also academic world for STEAM (Science, Technology, Engineering and Mathematics) skills. The interest in single-board architectures and their applications have caused that all electronics manufacturers currently develop low-cost single board platform solutions. In this paper we realized an analysis of the most important topics related with single-board architectures integrating sensors. We analyze the most popular platforms based on characteristics as: cost, processing capacity, integrated processing technology and open-source license, as well as power consumption (mA@V), reliability (%), programming flexibility, support availability and electronics utilities. For evaluation, an experimental framework has been designed and implemented with six sensors (temperature, humidity, CO2/TVOC, pressure, ambient light and CO) and different data storage and monitoring options: locally on a μSD (Micro Secure Digital), on a Cloud Server, on a Web Server or on a Mobile Application.
20
Naumenko, Igor, Mykyta Myronenko, and Taras Savchenko. "Information-extreme machine training of on-board recognition system with optimization of RGB-component digital images." RADIOELECTRONIC AND COMPUTER SYSTEMS, no. 4 (November 29, 2021): 59–70. http://dx.doi.org/10.32620/reks.2021.4.05.
Abstract:
The research increases the recognition reliability of ground natural and infrastructural objects by use of an autonomous onboard unmanned aerial vehicle (UAV). An information-extreme machine learning method of an autonomous onboard recognition system with the optimization of RGB components of a digital image of ground objects is proposed. The method is developed within the framework of the functional approach to modeling cognitive processes of natural intelligence at the formation and acceptance of classification decisions. This approach, in contrast to the known methods of data mining, including neuro-like structures, provides the recognition system with the properties of adaptability to arbitrary initial conditions of image formation and flexibility in retraining the system. The idea of the proposed method is to maximize the information capacity of the recognition system in the machine learning process. As a criterion for optimizing machine learning parameters, a modified Kullback information measure was used, this informational criterion is the functionality of exact characteristics. As optimization parameters, the geometric parameters of hyperspherical containers of recognition classes and control tolerances for recognition signs were considered, which played the role of input data quantization levels when transforming the input Euclidean training matrix into a working binary training matrix using admissible transformations of a working training matrix the offered machine learning method allows to adapt the input mathematical description of recognition system to the maximum full probability of the correct classification decision acceptance. To increase the depth of information-extreme machine learning, optimization was conducted according to the information criterion of the weight coefficients of the RGB components of the brightness spectrum of ground object images. The results of physical modeling on the example the recognition of terrestrial natural and infrastructural objects confirm the increase in functional efficiency of information-extreme machine learning of on-board system at optimum in information understanding weight coefficients of RGB-components of terrestrial objects image brightness.
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Dirgayasa, I. Wayan. "EMOJI, A BREAKTHROUGH IN CONTEMPORARY COMMUNICATION (A LITERATURE REVIEW)." Journal of Language, Literature, and Teaching 4, no. 2 (November 20, 2022): 63–76. http://dx.doi.org/10.35529/jllte.v4i2.63-76.
Abstract:
It is a fact that emojis are a growing phenomenon in the last few years. They have gained their popularity with their typical varieties in the digital era across countries in the world. The emojis are used among people as a way to assist the process of conveying emotions in textual communication that lacks nonlinguistic cues. Emojis were created and developed as visual mixed expressions of sentiments, attitudes, or moods for use in modern communication technologies. Then, in more broad perspective and context, in term usages, they are also generally perceived that they do not only have unique semantic and emotional features, but also are closely related to many areas such as marketing, law, education, health, etc. This paper reviews the nature of emoji, the developmental history of emojis, the functions of emojis in communication, and the usages of emojis in a real-digital world interaction and communication. Key words: emoji, function of emojis in communication, and the usages of emoji in digital world.
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Yi, Hongbin, Xizhang Wei, Tairan Lin, Yanqun Tang, Mingcong Xie, and Dujuan Hu. "Aperture-Level Simultaneous Transmit and Receive Simplified Structure Based on Hybrid Beamforming of Switching Network." Electronics 12, no. 3 (January 25, 2023): 602. http://dx.doi.org/10.3390/electronics12030602.
Abstract:
With the increasing competition for spectrum resources, the technology of simultaneous transmit and receive (STAR) is attracting more and more attention. However, full digital aperture-level simultaneous transmit and receive (FD-ALSTAR) is difficult to implement in a large-scale array with high frequency and bandwidth due to its high hardware cost and high power consumption. Therefore, this paper combines FD-ALSTAR with hybrid beamforming technology and proposes two categories and four types of aperture-level simultaneous transmit and receive simplified structures based on hybrid beamforming to reduce the number of RF links (NRF), hardware cost, and operation power consumption. In view of the complexity of the hardware of the fully connected hybrid beamforming structure and the low amplitude and phase control accuracy of the partially connected hybrid beamforming structure, an aperture-level simultaneous transmit and receive simplified structure based on hybrid beamforming of switching network (HBF-SN-ALSTAR) is proposed, and the mathematical model is established. The simulation results show that the simplified structure proposed in this paper can effectively reduce the NRF and power consumption, increase system redundancy, and improve system reliability. In a 144 × 144 antenna array, under the condition that NRF = 16 of HBF-SN-ALSTAR, that is, 1/9 of the number of FD-ALSTAR RF links, the effective isotropic isolation (EII) of the system is only 17 dB less than that of the FD-ALSTAR. The experimental results fully prove the effectiveness of the simplified structure.
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Liu, Yun Ling. "Research on the Visual Communication Design Based on Digital Multimedia." Advanced Materials Research 846-847 (November 2013): 1496–99. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.1496.
Abstract:
with the development of computer hardware and software performance improvement, digital multimedia technology has been applied to various fields, the effect of image visional transmission are mainly affected by the brightness, texture and color, and different image effects will produce different visual transmission effect. This paper starts from the brightness of the image, using the mathematical model of digital multimedia brightness change, and combined with MATLAB numerical simulation software, the digital multimedia visual effect design interface is developed. In order to verify the reliability of the design of digital multimedia solutions, image has been brightness correction in the digital multimedia visual effect interface, and then by changing the environment light, diffuse reflection and specular reflection light, we can change the effect of image digital communication. Finally, we will obtain better visual communication effect, to provide a theoretical reference for the development of digital multimedia technology.
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Bogalheiro, Manuel. "Techno-animism or the Magical Existence of Technical Objects." International Journal of Film and Media Arts 6, no. 1 (June 9, 2021): 55–72. http://dx.doi.org/10.24140/ijfma.v6.n1.03.
Abstract:
If, on the one hand, the classic notion of artefact presupposes inert objects and a reliability between the user and the uses that can be extracted from the objects, on the other hand, it is recognized a suspicion that technical objects and their operative schemes, the machines and the “artificial” solutions contain in themselves an inauthentic and adulterating nature, a power of cunning and trickery capable of emancipate and process in autonomous forms, regardless of the uses and apprehensions that humans, their operators, may make. The western imaginary of technics would thus have been constituted under presuppositions that, together with the formal laws of mechanics or the cold mathematics that governs any grammar of codes, projected a animistic and a magical dimension in all the artificiality that allowed to manipulate the original productivity of nature. With the emergence of digital technologies and the general informatization of artefacts, this dimension took shape in what Philip K. Dick would consider to be a techno-animism tendency and that ubiquitous computing and internet of things would materialize in the era of so-called cognitive capitalism. In this paper, we seek to approach techno-animism as a speculative aesthetics that, by projecting a life into technical objects, inscribes in them an alterity and a strangeness that could enhance other perspectives beyond the usual uses and relationships that we take for granted and that hide objects, as well as the political or commercial strategies that mobilize them. Enchanting technical objects is, on the one hand, creating a possibility to suspend them from their instrumental flows and, on the other, installing a weird or magical realism that disturbs the articulations of a mere and exclusively human reality.
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Lobastova, M., A. Matyukhin, and A. Muthanna. "Analysis of Network Reliability of Network Synchronization." Telecom IT 8, no. 4 (December 23, 2020): 93–99. http://dx.doi.org/10.31854/2307-1303-2020-8-4-93-99.
Abstract:
This article describes the challenges of modern communication networks reliability, analyses ITU-T recommendations and regulations governing the communication networks reliability in Russian Federation. The network clock network is an integral part of digital communication networks. Therefore, the issue of the synchronization network reliability should be given great attention. Research subject. In this article, we discussed the reliability of the clock synchronization network. Method. The main mathematical tools are graph theory and probability theory. To implement the proposed method for assessing the structural reliability of the synchronization network, the direct search method is used. Core results. The results allow us to conclude that the proposed method can be applied to assess the structural reliability of the clock synchronization network. Practical relevance. The solution proposed in this article can be used for a reasonable assessment of the network structural reliability indicators, which is necessary for making a decision on the choice of a route for transmitting a synchronization signal.
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Sun, Li Hua, Cui Cui Huang, and Liang Jun Yu. "Mobile Communication Inter-Symbol Crosstalk Cancellation Based on Calman Digital Equalizer Filter." Applied Mechanics and Materials 716-717 (December 2014): 1262–66. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.1262.
Abstract:
In the digital mobile communication signal transmission system, the inter-symbol interference is one of the main factors affecting the performance. In order to make the error rate reducing to a minimum, this paper designs a new Calman digital equalization filter. It is based on Calman filter principle, and establishes the control mathematical model of observation equation and state equation, and uses MATLAB programming to realize the algorithm. In order to verify the effectiveness and reliability of this filter, this paper uses filter toolbox of MATAB to do numerical simulation on the filtering effect. Through comparing with normal digital equalization filter effect, after adding the Calman digital equalizer filter, the feedback signal is conformed to the reference signal. The duty ratio of SPWM follows the basic changing law, so as to maximize the elimination of crosstalk inter-symbol. It provides reference data for the research on mobile communication inter-symbol interference.
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Agafonova, Anna Nikolaevna, and Valentina Vladimirovna Hashova. "ADVANCED DIGITAL TECHNOLOGIES IN LOGISTICS." Problemy razvitiya predpriyatii: teoriya i praktika, no. 1-2 (2021): 3–7. http://dx.doi.org/10.46554/pedtr-20-2021-2-pp.3.
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Kareva, Yuliya Yr'evnaKashaeva, Aleksandrovna Victoriya, and Maksim Alekseevich Pendyuhov. "DIGITAL ECONOMY: THREATS AND PROSPECTS." Наука XXI века: актуальные направления развития, no. 1-1 (2021): 396–400. http://dx.doi.org/10.46554/sciencexxi-2021.02-1.1-pp.396.
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Mathebula, Vonani Clive, and Akshay Kumar Saha. "Reliability and Availability of Multi-Channel IEC-61850 Substation Communication Networks for Mission-Critical Applications." International Journal of Engineering Research in Africa 51 (November 2020): 199–216. http://dx.doi.org/10.4028/www.scientific.net/jera.51.199.
Abstract:
The introduction of IEC-61850 digital-based Substation Automation System (SAS) eases implementation of elaborate schemes; however, its reliability and availability continue to be investigated for executing mission-critical applications. Independent repairable multi-channel systems with voting capability such as ‘one-out-of-two’ tripping schemes are often used for critical safety-related functions because the individual scheme channels hardly ever fail simultaneously. The system configuration enables the scheme to self-reconfigure when a link failure occurs in one of the channels, as well as being repairable with no interruption to the overall mission. This paper reviews the reliability and availability of evaluation methods to highlight their advantages and disadvantages. Structure-function modelling, as well as Markov process incorporating Systems Thinking and Mathematical Expectation are used to model the reliability of IEC-61850 based SCN to demonstrate the shortcomings of combinatorial methods in the evaluation of mission-critical systems where diagnostic capabilities of the systems and imperfect repairs should be considered. It is evident from the results of the study that system diagnostic capability and repair efficiency cannot be ignored for mission-critical applications for the reason that the simplifying assumptions of combinatorial analysis methods greatly over-state the reliability and availability performance of the system as observed from the results.
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Et. al., Marco Rosario Villareal,. "Optical Transport Network to support Digital Communications." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 4 (April 10, 2021): 1418–33. http://dx.doi.org/10.17762/turcomat.v12i4.1360.
Abstract:
The objective of this work is to propose a solution to the problem of the lack of telecommunication services, with adequate quality of service and coverage, in the town of Choclococha, Huancavelica-Peru. For this purpose, the design and evaluation of an optical link as a backbone network and a wireless access network is presented. It is an applied and experimental research in which performance parameters were evaluated. The independent variable is the optical transport network and the dependent variable is data communication. The latter is defined by two indicators: throughput and signal reception power at the users. Both indicators were measured in a sample of the population, obtaining results that were validated with respect to the expected values according to specifications and regulations. Thus, the measured throughput exceeds the 40% data rate guaranteed by the telecommunications operator. As for the reception power, it exceeds the sensitivity level of the receiving equipment. Therefore, it is concluded that the proposed solution supports communications with optimum speed and coverage.
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Makarov, G. N. "Guaranteed decision-making reliability in digital measurement control." Measurement Techniques 35, no. 8 (August 1992): 912–15. http://dx.doi.org/10.1007/bf00977430.
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Manev, Nikolai L. "Grid and Simulation of Digital Communication Systems." Serdica Journal of Computing 4, no. 1 (March 31, 2010): 101–12. http://dx.doi.org/10.55630/sjc.2010.4.101-112.
Abstract:
The purpose of this paper is to turn researchers' attention to the use of grid computing for simulating digital communications and its large potential for decreasing significantly the duration of the experiments and for improving the statistical representativeness and reliability of the obtained results.
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Wang, Tao, Jinyan Cai, Yafeng Meng, Meng Lv, and Zexi Li. "Design of a Bio-Inspired Embryonic Cellular Array Based on Bus Structure." Journal of Circuits, Systems and Computers 29, no. 06 (August 13, 2019): 2050099. http://dx.doi.org/10.1142/s0218126620500991.
Abstract:
There are some shortcomings, such as huge hardware resource consumption, functional differentiation is difficult and limited fault detection coverage, when embryonic cellular array (ECA) is used to design large-scale circuit. In this paper, the structure characteristics and communication method of multicellular organism are analyzed briefly, and a new bio-inspired ECA based on bus structure (BECA) is proposed, besides that the corresponding self-repairing strategy is designed. First, the functional decomposition has been applied in BECA, which uses bus structure to realize internal communication. BECA consists of bus and electronic tissues (ET), which can be used to realize large-scale circuit. C17 circuit in ISCAS85 circuit library is chosen as experiment subject, and experiment simulation results indicate that BECA based on bus structure is suitable for large-scale circuit, and the faults occurred in ET can be repaired effectively. In order to research BECA from the mathematical point of view, the reliability evaluation model of BECA is established, which is based on [Formula: see text]-out-of-[Formula: see text] system reliability model. In addition, the hardware resource consumption model of BECA is established by analyzing the number of metal oxide semiconductor (MOS) transistors that ECA consumed. Based on BECA reliability and hardware resource consumption evaluation model, comparative experiment is studied, and the results indicate that the proposed ECA can improve the reliability of circuit and reduce hardware resource consumption effectively. Therefore, the BECA presented will play an important role in designing large-scale digital circuit with self-repairing ability.
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Iqbal, Saima, Wilayat Khan, Abdulrahman Alothaim, Aamir Qamar, Adi Alhudhaif, and Shtwai Alsubai. "Proving Reliability of Image Processing Techniques in Digital Forensics Applications." Security and Communication Networks 2022 (March 31, 2022): 1–17. http://dx.doi.org/10.1155/2022/1322264.
Abstract:
Binary images have found its place in many applications, such as digital forensics involving legal documents, authentication of images, digital books, contracts, and text recognition. Modern digital forensics applications involve binary image processing as part of data hiding techniques for ownership protection, copyright control, and authentication of digital media. Whether in image forensics, health, or other fields, such transformations are often implemented in high-level languages without formal foundations. The lack of formal foundation questions the reliability of the image processing techniques and hence the forensic results loose their legal significance. Furthermore, counter-forensics can impede or mislead the forensic analysis of the digital images. To ensure that any image transformation meet high standards of safety and reliability, more rigorous methods should be applied to image processing applications. To verify the reliability of these transformations, we propose to use formal methods based on theorem proving that can fulfil high standards of safety. To formally investigate binary image processing, in this paper, a reversible formal model of the binary images is defined in the Proof Assistant Coq. Multiple image transformation methods are formalized and their reliability properties are proved. To analyse real-life RGB images, a prototype translator is developed that reads RGB images and translate them to Coq definitions. As the formal definitions and proof scripts can be validated automatically by the computer, this raises the reliability and legal significance of the image forensic applications.
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Lin, Jun Ting, and Jian Wu Dang. "Reliability Models of GSM-R Redundant Network on High-Speed Railway." Applied Mechanics and Materials 198-199 (September 2012): 1783–88. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.1783.
Abstract:
As a dedicated digital mobile communication system designed for railway application, GSM-R must provide reliable bidirectional channel for transmitting security data between trackside equipments and on-train computer on high-speed railways. To ensure the safety of running trains, redundant network architecture is commonly used to guarantee the reliability of GSM-R. Because of the rigid demands of railway security, it is important to build reliability mathematical models, predict the network reliability and select a suitable one. Two common GSM-R wireless architectures, co-sited double layers network and intercross single layer network, are modeled and contrasted in this paper. By calculating the reliabilities of each reliable model, it is clear that more redundant the architecture is, more reliable the system will be, the whole system will bear a less failure time per year as the benefit. Meanwhile, as the redundancy of GSM-R system raises, its equipment and maintenance will cost much, but the reliability raise gently. From the standpoint of transmission system interruption and network equipment failure, the reliability of co-sited double layer network architecture is higher than the intercross single layer one, while the viability and cost of the intercross redundant network is better than co-sited one in natural disasters such as flood and lightning. Taking fully into account reliability, viability and cost, we suggest that intercross redundant network should be chosen on high-speed railway.
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Wawer, Tomasz, Tadeusz Dąbrowski, and Marcin Bednarek. "Reliability Analysis of Radioamateur Communication." Journal of KONBiN 37, no. 1 (July 1, 2016): 253–76. http://dx.doi.org/10.1515/jok-2016-0012.
Abstract:
Abstract The following article describes diagnostic and reliability aspects of amateur radio communications. The intention of precise measuring of quality and accuracy of every contact was present in ham radio from very beginning. The reports were sent and they are still used today, in many variants. In time, the tools to measure ionosphere state and propagation conditions emerged. They are fundamental for communication, especially long distance ones. The article concentrates on description of digital amateur mode, JT9. This mode is very effective, enables worldwide reach and requires simple tools.
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Laster, J. D., and J. H. Reed. "Interference rejection in digital wireless communications." IEEE Signal Processing Magazine 14, no. 3 (May 1997): 37–62. http://dx.doi.org/10.1109/79.587051.
38
Hoyos, S., B. M. Sadler, and G. R. Arce. "Monobit digital receivers for ultrawideband communications." IEEE Transactions on Wireless Communications 4, no. 4 (July 2005): 1337–44. http://dx.doi.org/10.1109/twc.2005.850270.
39
Howarth, Mark. "HART — Standard for 4–20mA Digital Communications." Measurement and Control 27, no. 1 (February 1994): 5–7. http://dx.doi.org/10.1177/002029409402700102.
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White, Andrew, and EurIng Simon Brown. "Using Digital Communications in Safety-Related Applications." Measurement and Control 37, no. 3 (April 2004): 84–87. http://dx.doi.org/10.1177/002029400403700304.
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Shagataeva, Zaure, Yernazar Kaspaevich Sarbassov, Erkegul Seminar, Marianna Amangeldyevna Sydykbekova, and Ardak Tolegenovna Kydyrbaeva. "The general technological competency model for vocational teachers in Kazakhstan." World Journal on Educational Technology: Current Issues 13, no. 4 (October 1, 2021): 574–88. http://dx.doi.org/10.18844/wjet.v13i3.5938.
Abstract:
Like in many Global South countries, the vocational education and training system in Kazakhstan has some weaknesses, including low-competent educators poorly applying digital technologies in their instructional repertoire, which highlights the need for motivating teachers towards incorporating technologies representing students' everyday life in the educational process. Meanwhile, there are no practically applicable competency frameworks for Kazakhstani vocational teachers to date. This paper aimed to gather students’ opinions on which skills are more or less important for vocational educators to outline a technological competency framework for Kazakhstani vocational teachers based on Digital Competency Profiler, with content validity tested by five experts. A set of nineteen items measured on a five-point Likert scale, organized into technical, communicational, informational, and epistemological domains, was uploaded to an online survey platform and distributed among Master degree students enrolled in vocational programs in Kazakhstan. Based on survey data, the construct validity of the model was assessed by confirmatory factor analysis, which yielded high entire reliability and internal consistency. The learners assigned importance to all the four domains. However, they estimated vocational teacher’s ability to utilize productivity tracking tools as almost futile, which allegedly indicates the surveyees’ insufficient awareness about those applications and their purposes. Generally, the participants tend to prioritize vocational educators’ capacities to process mathematical computations, visualize numerical data, and operate with electronic text files and projectors, as well as their readiness for effective communication through messengers and electronic mail. The framework that emerged from this research can be used as a blueprint for synchronizing and improving educational programs in Kazakhstan.
Keywords: education; survey; technology; ICT; vocational education and training.
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Shafie Rosli, Mohd, Nor Shela Saleh, Sultan Hammad Alshammari, Mohd Mokhzani Ibrahim, Azri Syazwan Atan, and Noor Azean Atan. "Improving Questionnaire Reliability using Construct Reliability for Researches in Educational Technology." International Journal of Interactive Mobile Technologies (iJIM) 15, no. 04 (February 26, 2021): 109. http://dx.doi.org/10.3991/ijim.v15i04.20199.
Abstract:
<p class="0abstract">This paper is exploring on maneuver to improve research instrument reliability in scientific research related to Educational Technology by analyzing the traditional Cronbach’s alpha reliability using SPSS software and the newer statistical tool, AMOS using Construct Reliability (CR) approach. Two sets of data were used as sample to perform the comparison. The first set of data is from a research involving Technology Enhanced Learning Environment. The second data are sampled from research in digital competency. Finding from this paper concluded that, conventional approach of using Cronbach’s alpha have lower reliability than the newer approach of using CR. Using Cronbach’s alpha show tendency toward measuring consistency instead of reliability. CR offer better definition of reliability and give a robust measurement of reliability in research. This paper had shed light into offering alternative approach to the commonly and widely uses of research reliability especially when it involves questionnaire as instrument.<strong></strong></p>
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Ghandi, Reza, Cheng-Po Chen, Liang Yin, Rich Saia, Tammy Johnson, Peter Sandvik, Kun Fang, and R. Wayne Johnson. "Reliability of SiC Digital Telemetry Circuits on AlN Substrate." Journal of Microelectronics and Electronic Packaging 11, no. 1 (January 1, 2014): 25–29. http://dx.doi.org/10.4071/imaps.397.
Abstract:
In this work, two silicon carbide based integrated circuits (frequency counter and timing generator) have been designed, fabricated, and tested for functionality at 300°C and prove to operate continuously for more than 1,000 h. Further, the boards were subjected to random vibration at 20G RMS and also mechanical shock at 215G in a 300°C environment and remained operational after 8 h of vibration and 1,000 shocks. These boards are the building blocks of a digital telemetry module for the purpose of sensing and transmitting pressure measurements from a geothermal well at temperatures up to 300°C. The frequency counter consists of one 4-bit counter, one 4-bit shift register, and one buffer. The timing generator contains an 8-bit counter, a D-flip-flop, and some dedicated logic gates to generate timing pulses for the two channel frequency counter. These dice were flip-chip bonded to patterned gold thin-film aluminum nitride substrate circuit boards.
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YU, Jianjun, and Yi WEI. "Digital Signal Processing for High‐Speed THz Communications." Chinese Journal of Electronics 31, no. 3 (May 2022): 534–46. http://dx.doi.org/10.1049/cje.2021.00.258.
45
Idachaba, Francis Enejo. "Optimal Antenna Configurations for Digital Oilfield Implementations." Advanced Materials Research 824 (September 2013): 187–92. http://dx.doi.org/10.4028/www.scientific.net/amr.824.187.
Abstract:
Antennas play a very pivotal role in the development and advancement of digital oil fields. They provide the last mile communication link to the field locations and thus must be properly sized to ensure the link availability and reliability. There are different types of antennas currently being deployed with each having different impacts on the communication link performance. This paper discusses typical antenna configurations for implementing last mile communications to the field in digital oilfield applications. It analyzes the characteristic of each configuration, the impact these different configurations have on data security, deployment speed and communication range and presents an optimal configuration that improves data security, deployment speed and communication range.
46
ZASTROZHNІKOVA, Iryna. "STRATEGIC ORIENTATION OF THE AGRICULTURAL ENTERPRISE AND TASKS OF PERSONNEL MANAGEMENT WITH THE USE OF DIGITAL TECHNOLOGIES." Ukrainian Journal of Applied Economics 5, no. 4 (December 2, 2020): 314–20. http://dx.doi.org/10.36887/2415-8453-2020-4-37.
Abstract:
The purpose of the presented research is to analyze the tasks of personnel management in the context of digitalization of technologies in the context of the strategic directions implementation of agricultural enterprises development. The interconnection and coordination of the personnel management strategy and the general strategy of the enterprise are considered. The significance of personnel management strategy in the hierarchy of the organization strategy is determined. Thus, the strategy of personnel management is referred to the number of functional strategies, as well as the strategy of personnel development to the operational strategies. The analysis of the general laws of modern development of society allowed to state the fact of the digitalization processes actualization in the social space, based on the widespread use of personal computer technology. The consequence of economic-mathematical methods, means of computer engineering and communication in the system of organizational and managerial structure elements in the management system of the production organization, including personnel management, are shown. The tasks of the personnel management system are structured, for the solution of which special mathematical methods can be used. Trends in the development of information processing procedures in personnel management systems of modern enterprises are revealed. The evolution of personnel management technology is outlined, which has a tendency to change the functionality of information systems on the basis of their expansion. The classification of software products used in the practice of personnel management services of domestic agricultural enterprises is presented. The conditions of successful realization of personnel management tasks at the agricultural enterprise with application of digital technologies are allocated. Potential areas for improving the efficiency of personnel management system based on the use of economic and mathematical methods, modern digital technologies, namely the optimization of management processes, document management, rationalization of quantitative parameters of management staff based on reducing the complexity of processes, improving the reliability of information flows, quality management are represented. Keywords: agricultural enterprise, strategic orientation, personnel management, digital technologies, digitalization.
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McGough, John, Andrew Reibman, and Kishor Trivedi. "Markov reliability models for digital flight control systems." Journal of Guidance, Control, and Dynamics 12, no. 2 (March 1989): 209–19. http://dx.doi.org/10.2514/3.20393.
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S, SKRYPNYK, and KOLLAROV O. "Research of the impact of the introduction of neural networks in the energy sector of Ukraine." Journal of Electrical and power engineering 26, no. 4 (May 24, 2022): 39–43. http://dx.doi.org/10.31474/2074-2630-2022-1-39-43.
Abstract:
A power plant converts energy from a non-electric form to an electric one. Depending on the energy conversion, power plants are classified as minerals, nuclear, solar, geothermal, hydroelectric, and so on. The main goal is to perform this transformation as best as possible. Criteria of safety, efficiency, reliability and affordability are taken into account as benchmarks. The station consists of several units that generate and work together to meet electricity needs. For a fossil fuel power plant, each unit consists of three main components: a boiler, a turbine and a generator. The complexity of the operation is due to the variability of the load and high efficiency required in a wide range of operations. The main difficulties for the management task then arise due to the strong link between process variables and process nonlinearity. The purpose of this article is to analyze and develop a proposal for the introduction of artificial intelligence in the power industry of Ukraine. To achieve this goal, we will offer the following tasks: - analyze existing systems for the use of artificial intelligence in industry; - develop proposals for the introduction of artificial intelligence in the electricity system of Ukraine. In this study, methods of statistical, factorial, historical, comparative, logical, economic-mathematical and systems analysis, the method of expert assessments were used, which allowed to formulate proposals for the introduction of artificial intelligence in the power industry. Artificial neural networks are the first step towards a fundamentally new system of information analysis. They are mathematical and computer models that simulate the work of biological neurons, ie a system of interacting processes, built on the principle of connecting nerve cells of the human brain. It should be noted that they differ from conventional machine algorithms in the ability to learn, memorize and reproduce images, determine patterns, memorize and analyze information and obtain results. Output signals that arrive at the next processor and continue to be converted. Thus, artificial neurons form networks and layers in which connections are created, restored, maintained and destroyed by special signals. With regard to artificial intelligence, there is no generally accepted definition of artificial intelligence, therefore, by artificial intelligence we mean a machine system capable of learning using objective knowledge and experience, to solve creative problems like the human brain and inventive tasks, not going through options, build strategies and apply abstract concepts. Digitalization and artificial intelligence are penetrating most sectors of the economy, including the electricity sector. The digitalization of energy requires the development and widespread use of end-to-end technologies, including industrial Internet, components of robotics, wireless communications, artificial intelligence and others. Thus, artificial intelligence technologies have prospects for development. Of course, significant targeted funding is needed to achieve significant results. The interaction of research institutes and universities with business is very important, where artificial intelligence technologies are also being developed. Attention of the authorities and society, their understanding of the importance of the tasks facing countries to achieve the goal of implementing artificial intelligence. With regard to electricity, the integration of artificial intelligence into the industry will help optimize and increase efficiency in all aspects of energy production, transmission and consumption. It should be noted that the development of electricity is a step towards the development of other industries. That is why the transition to the digital industry is impossible without the digitalization and intellectualization of the power industry
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Zhang, Shengnan, and Xiaoni Chi. "Application of Digital Information Technology in Enterprise Innovation Management." Mobile Information Systems 2022 (August 4, 2022): 1–11. http://dx.doi.org/10.1155/2022/9187856.
Abstract:
Digital information technology is the key to realize the efficient management of enterprises. It is necessary to analyze the information technology and provide perfect operating conditions for enterprises in combination with the economic management of enterprises. This article studies enterprise management in the digital information environment, improves the effectiveness of enterprise management methods, and judges the management state of enterprises. At the same time, formula calculation is used to provide a test method for the application effect of digital information technology so that that information technology can be evaluated fairly. The experimental results show that enterprise management also involves inventory management. It is necessary to use information technology to identify products, record the process of products entering and leaving the warehouse in combination with code scanning technology, and optimize the product management process. In the process of enterprise management, the process management form should be adopted to improve the reliability of management methods and ensure that the enterprise has a normal management mode and perfection of enterprise operation state. It proves that digital information technology can promote the development of enterprises, improve the reliability of enterprise management, and reduce the impact of adverse factors on enterprises.
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Sokol, M. L. "Reliability in digital secondary clock display for various chronometric data-processing algorithms." Measurement Techniques 32, no. 4 (April 1989): 340–44. http://dx.doi.org/10.1007/bf00866629.