bluuebunny/crossref_metadata_2025 huggingface dataset:
Discrete model of the evolution of the phase space of fractionally dimensional microsystems
Authors:   FSSFEE HE ", Yudenkov Aleksey V. ,   SSUS", Volodchenkov Aleksandr M. ,   Smolensk Branch of Plekhanov Russian University of Economics, Rimskaya Liliya P. ,   Smolensk Branch of Plekhanov Russian University of Economics
Published: September 2022

The study of the process of changing information in microscopic systems is a rather complex and urgent scientific problem. The difficulty lies in the fact that, due to the microscopic nature of objects, it is impossible to use well-known thermodynamic methods based on the laws of large numbers. One of the possible methods for studying microscopic systems is the use of discrete Markov models with continuous time. Such models are based on the Heisenberg uncertainty principle and adequately describe the interaction between a macroscopic observer and a microscopic system at a quasi-classical level. At the same time, the use of semiclassical models makes it possible to avoid singularities, including those that cannot be eliminated, arising at small distances and high energies. In this paper, a discrete mathematical model of the phase space of an elementary particle will be used to study microscopic objects with a dimension of n=1. As a result of using the model, an original interpretation of the quark structure of hadrons was obtained. In particular, the dynamics of the functioning of quarks in the proton and neutron, the conditions for the formation of Δ resonances (Δ0, Δ+, Δ+, Δ++) are presented. The problem of the absence of free quarks (the phenomenon of confinement) is also considered. The paper considers only the first generation of quarks and the hadrons based on them. On the basis of known experimental data, numerical calculations have been carried out, showing sufficient adequacy of the model. The mathematical model of the discrete phase space, created to study the evolution of information in microscopic systems, is applicable to solving problems of elementary particle physics and can, in some cases, supplement the existing models of the quark structure of hadrons.
Hardware method parallel prefix and suffix search on an array of fixed-ength substrings
Authors:   The Southwest State University, Titenko Evgeny A. , Dobroserdov Oleg G. ,   The Southwest State University, Schitov Alexey N. ,   The Southwest State University, Titenko Mikhail A. ,   The Southwest State University
Published: September 2022

The work consists in the development of hardware-oriented methods for restoring the structure of the target word. The reconstruction storation is performed by constructing its prefix and suffix from a set of private words, understood as patterns. The reconstruction of the unknown word is performed by formation its prefix and suffix from a set of private words, understood as standards. The goal is to reduce the recovery time of the structure of the target word by parallel processing of pairs of words stored in the matrix of the original partial words. Solution method. The method consists of 4 stages. They include the stage of parallel processing of fragments of pairs of words for their intersection and selection of mismatched characters. These characters are candidates for the current prefix and suffix characters. A distinctive feature of the proposed method is the hardware support of the main operations in the form of a homogeneous computational PIM structure and the use of a string data structure rather than tuples. For a tuple, the minimum work item is a single character, so the processing of an m-tuple is sequential element-by-element. For a word, the minimum work item is a string of characters that can be processed in parallel without losing the generality of properties. The meaning of the PIM structure is the integration of register memory blocks and functional units for comparing character strings, which allows parallel processing of an array of elements without wasting time on intermediate transfers. Results and discussions. Algorithms are modeled based on the known method and the developed method, using variable parameters: the number of private words, the length of the private word, the cardinality of the alphabet. Modeling showed that the developed method has a time advantage from 1,25 to 9,97. Conclusion. The developed hardware-oriented method for restoring the target word based on the analysis of a set of private words that have a structural relationship with each other has shown its temporal efficiency with increasing values of the varied parameters. This property testifies to the prospects of using the method in search-analytical problems of a real level of complexity.
Performance of landfills when allowing private locomotive traction for public infrastructure
Authors:   Irkutsk State Transport University (IrGUPS), Malovetskaya Ekaterina V.
Published: September 2022

Throughout the reform of the industry, ongoing changes, both positive and negative, have a significant impact on the main performance of the industry. More often, industry analysts and experts focus on negative changes. So, once again, the issue of admission of private locomotives to public infrastructure is raised. This proposal was not the first to come from the Union of Railway Transport Operators (JWT), which lobbied for the liberalization of locomotive traction for the implementation of freight rail transport and motivated the proposal by "lack of locomotive traction and the presence of a barrier for the timely delivery of cargo to the consumer." The presented work reflects the peculiarities of the description of the technology of the work of one of the junction points of the railways of the Eastern region when implementing the introduction of private locomotive traction on a public infrastructure tour in the AnyLogic simulation system. The work of the junction point was considered in several modes of work: the loco-motive fleet of the main carrier and in the implementation of work during the introduction of private locomotive traction (a different number of operators). The result of the work was the identification of possible infrastructure and technological constraints in the implementation of the program for the admission of private locomotives to public infrastructure.
G/G/1 queue analysis for openflow software defined networks
Authors:   Povolzhskiy State University of Telecommunications and Informatics, Buranova Marina A. , Kartashevskiy Vyacheslav G. ,   Povolzhskiy State University of Telecommunications and Informatics
Published: September 2022

The SDN imposes requirements on manufacturers of infocommunication equipment related to the support of new scenarios for working with network applications, for example, with cloud technologies, with the ability to transmit large amounts of traffic over long distances. All this leads to the need to analyze the features of the SDN networks, assess their performance both at the design stage and in the process of operation. Quality of service (QoS) parameters in networks, such as delay and delay variation, can be used as characteristics to evaluate the quality of operation. An analysis of the functioning of a software-defined network using the M/G/1 and G/G/1 systems was made. Solutions based on two approaches are given, when the truncated normal distribution and the hyperexponential distribution are used as an example of an arbitrary distribution. When analyzing the G/G/1 system, an assumption was made about the mutual independence of flows entering the system and the absence of correlations within the sequences of time intervals between requests and processing times of requests. In the work, an expression for the probability density of processing times of applications in the systems M/N/1, H2/N/1 and H2/H2/1, analytical expressions for estimating the average values of the delay time of applications in the systems M/N/1, H2/N /1 and H2/H2/1 for software defined networks. The paper presents the result of comparing the average values of estimates of the delay time of applications in the systems M/N/1, H2/N/1 and H2/H2/1 for the SDN. An analysis of the dependence of the average delay time of a request in the system on the load factor in the queuing systems under consideration is given.
Radiosensor identification and authentication of radio-electronic devices
Authors:   MIREA – Russian Technological University, Boikov Konstantin A.
Published: September 2022

The presented work is devoted to the study of a new physically unclonable function (PUF) associated with the intrinsic electromagnetic radiation of a radio electronic device. This PUF arises as a result of the technological spread of the parameters of electronic components. The relevance of this study is explained by the fact that modern methods of protecting radio-electronic products from illegal cloning have a number of serious drawbacks associated with increased power consumption, the use of processor time, and the need for galvanic access to the object of study. Partially, these problems are eliminated by PUF, which allow authentication of a radio-electronic device. However, this kind of protection also has serious vulnerabilities in the case of illegal overproduction of products in excess of the ordered quantity. In addition, the PUF does not allow for the identification of radio-electronic products. The purpose of this work is to increase the protection of radio electronic devices from illegal cloning, by studying a new PUF. The work uses experimental research methods to record the electrical component of the electromagnetic field emitted by the product - the signal radio profile (SRP). Correlation analysis methods for product authentication, Pearson's statistical agreement method for identification. SRPs registered from specially designed experimental samples are presented, a correlation analysis of SRP data is carried out. To decompose and extract the parameters of the SRP, its time-frequency spectrum was constructed. A correspondence table was compiled and an analysis of Pearson's agreement was carried out. The results obtained showed the possibility of using the SRP as a new physically unclonable function that allows the identification of radio electronic devices with a probability specified by the researcher, which determines the novelty of the work. It has been established that with Pearson's coefficient of agreement between the parameters of the studied SRP and the benchmark of more than 0.95, a radio-electronic device can be reliably identified. The practical significance of the work lies in the possibility of using the SRP to identify a group of devices and radio-technical protection of a radio-electronic product from fakes and illegal copies.
Development of SDR-based network positioning technology. LTE reference signals generation
Authors:   The Bonch-Bruevich SPbSUT, Fokin Grigoriy A. , Volgushev Dmitry B. ,   The Bonch-Bruevich SPbSUT, Kharin Vitaliy N. ,   LLC "Laboratory of Infocommunication Networks"
Published: September 2022

An analysis of the state of the problem of building prototypes of fourth and fifth generation network positioning technology, using the approach of model-based design and software-defined radio SDR (Software-Defined Radio) according to open foreign sources showed the high actuality and relevance of this direction. At the same time, insufficient attention is paid to this area of research and development in native sources. This paper proposes the layout of the developed SDR demonstrator of network positioning technology. The task of developing the demonstrator is to substantiate technical solutions to improve the accuracy of determining the location of devices in modern and future communication networks in the absence of signals from the global navigation satellite system. The purpose of using SDR technology for network positioning tasks is to get the opportunity to improve the developed technical solutions in the process of their actual operation. Developed demonstrator includes the following subsystems: a subsystem of eNB base station prototype with known coordinates that implements the generation and transmission of reference signals of the LTE standard; prototype of the user equipment UE, which implements the reception and processing of the reference signals of the LTE standard, as well as the primary processing of measurements using the reference signals of the LTE standard; eNB base station prototype synchronization subsystem, which implements the distribution of a timestamp signal; the SDR demonstrator control subsystem, which implements the control of the procedures for collecting primary measurements of network positioning and their secondary processing with the resulting estimate of the coordinates of the user equipment UE. Also, this article describes the results of software-hardware implementation and experimental testing of the LTE reference signal generator on USRP SDR devices in Matlab environment. The procedure for generating reference signals is uniquely determined by the cell identifier, and the generator itself is an integral part of the layout of the SDR network positioning technology being developed. Experimental testing of the reference signal generator in laboratory conditions using objective control tools showed correct determination of the group identificator and cell identificator within group, which uniquely determine initialized cell identifier.
Comparative analysis of continuous online authentication tools and anomaly detection systems for permanent confirmation of the user's identity
Authors:   Vladimir State University named after Alexander Grigoryevich and Nikolai Grigoryevich Stoletov (VlSU), Uymin Anton G. , Morozov Ilya M. ,   GBOU MIC
Published: September 2022

Problem statement: increasing the security of the system actualizes issues related to the confirmation of the user's identity by various methods. Known ways to increase security, continuous authentication by biometric parameters, such as the movement of a computer mouse, the speed of clicking mouse buttons is complex and does not give one hundred percent accuracy. The purpose of the work: is to study the existing solutions in the field of anomaly detection and continuous authentication systems. It is proposed to develop parameters for removing data from a computer mouse, requirements for creating a DataSet, the effectiveness of analysis and extraction of the main features from the raw data. Consider the DL models for CA and AD, allowing to verify the user, to make their qualitative comparison. Methods used: the study uses a comparative analysis of technologies. Such as differentiated machine learning (ML), including the decision tree classifier (DT), the k-nearest neighbor method (k-NN), the random forests algorithm (RF) and ultra-precise neural networks (CNN). Result: based on a comparative analysis of continuous online authentication tools and anomaly detection systems for permanent confirmation of the user's identity. As a result of the work, it was determined that the existing methods related to CA and AD describe mainly laboratory studies, and are in the nature of confirming hypotheses. The considered studies describe the parameters used to develop software for taking data about mouse actions. Studies show that the collection tools have little effect on the quality of the data obtained, provided that the data is preprocessed using algorithms for identifying key features. Most studies consider data sets obtained either from free sources or from groups of volunteers ranging from 10 to 60 people. It should be noted that the number exceeding 10 can be considered sufficient to determine a representative sample. It was determined that the greatest value on the result was given by signs describing the movement of the mouse between two locations of the screen. The DL models for CA and AD that allow user verification are considered, and their qualitative comparison is made. Practical significance: the conducted research makes it possible to judge the possibility of implementing a solution for continuous online authentication and anomaly detection systems for permanent confirmation of the user's identity within the framework of the RemoteTopology remote championship system developed earlier.
Evaluation of efficiency method a of synthesis of a multi-service communication network
Authors:   The Bonch-Bruevich Saint Petersburg State University of Telecommunications, Zhuravel Evgeny P.
Published: September 2022

The article proposes directions for evaluating the efficiency of the multiservice communication network structure variant, and on the basis of euclidean heuristics, an approach to evaluating the efficiency of the method of synthesizing a multiservice packet-switched communication network consisting in searching for a structure on a limited set of vertices connected by minimum edges by weight, which is a set of independent spanning trees on a limited subset of minimum connections. It is proposed to assess the effectiveness of the method of synthesizing a multiservice communication network for connected saturated graphs, since an accurate analysis of the effectiveness of euclidean heuristics is a difficult analytical task and very significantly depends on both the number and location of vertices and the number of edges incident by it. The given version of estimation of efficiency of method of synthesis of multiservice communication network is based on results of multivariate computational experiment for random saturated graphs, upper limits of characteristics of which are obtained from normative and technical documentation by evaluation analysis of values of parameters of promising multiservice communication networks. Assessment of the set of main and additional actions when searching for the required number of independent spanning trees, the structure of the multiservice communication network in comparison with the Prima algorithm allows us to conclude that, that the synthesis method under consideration enables to obtain a rational solution to the structure synthesis problem, constituting a multiservice communication network in an acceptable time compared to known synthesis methods; which, according to the results of statistical tests for the considered practically important subset of implementation options for promising multiservice communication networks, is two to three times less than the estimate of the time for performing a search on a set of all vertices.
Generalized model of actions by an attacker when manipulating messages containing precise time signals
Authors:   FSBEI HE PGUPS, Kanaev Andrey K. , Oparin Evgeniy V. ,   Giprotranssignalsvyaz – a branch of JSC Roszheldorproekt, Oparina Ekaterina V. ,   FSBEI HE PGUPS
Published: September 2022

This article gives the place and role of the common time system in the telecommunications system, gives an overview of the process of functioning of the common time system, indicating the main means of transmitting accurate time signals. Based on the analysis of the process of functioning of the common time system, the main risks of failures in technological and automated systems in case of violation of the accuracy of the transmission of common time signals are identified. As a result of the analysis of emerging risks, attention is focused on the main types of threats to the single time system when attacks are carried out by organized malefactors. A special place among the threats is occupied by the manipulation of messages containing precise time signals. To analyze this threat, a semi-Markov model of an attacker's actions when manipulating messages containing precise time signals is formed. The main stages of the process of carrying out the attack are singled out. Using the method of minors, the main stationary characteristics of the attack process are calculated, such as the probability of finding the attack process at various stages of its implementation, as well as the average time of the attack duration and the average recovery time of the unified time system from the consequences of the attack. This information also serves as the basis for determining the coefficient of correct operation of the unified time system. The results obtained can be reflected in the formation of strategies for protecting the unified time system from attacks by organized intruders.
Application of quantization of multiphase sequences to increase the efficiency of their reception and processing in LTE technology
Authors:   Moscow Technical University of Communications and Informatics (MTUCI), Kiseleva Tatiana P.
Published: September 2022

In this paper, a comparative statistical analysis of errors during the passage of the Rayleigh channel by multiphase sequences is carried out on the example of the Zadoff–Chu sequence in unchanged form and with the use of a preliminary quantization procedure. Author makes use of the model of the Rayleigh channel of which is synthesized using the resources of models of communication channels of the MATLAB system in the variant of the Rayleigh communication channel of the EVA standard.
Nash equilibrium in allocating space for paid and free parking, taking into account the interests of motorists, city authorities, and parking owners
Authors:   Siberian Transport University, Koryagin Mark E.
Published: September 2022

The problem of optimizаtion the distribution of urban territory near a center of gravity (airport, railway station, mall, etc.) between two types of parking lots: paid and free is considered. Obviously, under otherwise equal conditions the car user will choose free parking, but this will lead to an increase in the time to find a parking space. Therefore, paying for parking is beneficial for people who have a higher their value of time. Paid parking operator determine the size of the parking fee - if the price is low enough, all parking spaces will be occupied and there will be problems with parking, in addition, there will be lost profits. Lost profits will also occur if the price is high enough, because if the price goes up, fewer car users will be ready to use paid parking services. The city authorities' task is to determine part of the land which should be allocated for paid parking on the understanding that the rest of the land goes to free parking. The paid parking owners' task is to determine the optimal price in order to maximize the profit. Car users choose parking based on their value of time. A mathematical model was built with three types of participants: car users, municipal authorities and parking operators. The strategy of the passenger is the choice of parking, the goal is to minimize the cost and time. The strategy of the municipality is the allocation of territory for parking, the goal is similar to the goals of passengers. Parking operator with the strategy "parking price" achieves to maximize profit. The interaction of the participants is described within the framework of game theory, the objective functions of the players are considered, and the existence of the Nash equilibrium is proved. Numerical examples are considered, options for the development of the presented model are described. The dependence of characteristics on the total allocated number of parking spaces in two types of parking lots, the price of parking and the intensity of the car flow to the center of gravity is presented.
Neural network method for estimating the angular coordinates of radar targets in a digital antenna array
Authors:   Mints Radio-Technical Institute (RTI), Shatsky Nikolay V.
Published: September 2022

A neural network method for measuring angular coordinates is proposed, which consists in combining a neural network with a diagram-forming scheme of a digital antenna array and forming a signal corresponding to the angular position of the target at the output of the neural network. A theorem is formulated that the output of the first layer of the proposed neural network generates signals corresponding to the beam patterns of the receiving channels of the digital antenna array. Using the example of a linear digital antenna array, the monopulse method for measuring angular coordinates is compared with the proposed neural network method. It is established that the training of the neural network should be carried out with the addition of noise, and training examples should be formed within the sector of angles occupied by the rays of the measuring channels. It is shown that the proposed method is able to compete with the monopulse method in the width of the angular sector, in which it is possible to estimate the angular coordinates and allows measuring the angular coordinates for non-identical beams of the monopulse group.
Atribuciones de la pobreza: efectos en la comunidad
Authors: Ríos Rodríguez María Luisa , Moreno-Jiménez Pilar , Vallejo Martín Macarena
Published: September 2022

El objetivo del presente trabajo es examinar la relación entre las atribuciones causales de la pobreza con la participación y el sentido de comunidad. Previamente se tuvieron en cuenta la influencia de variables sociodemográficas y socioeconómicas en este tipo de atribuciones, encontrándose algunos efectos según sexo, edad y nivel educativo. La muestra estuvo compuesta por 720 participantes y los resultados indican que las explicaciones de la pobreza de tipo cultural tienen un efecto directo sobre el sentido de comunidad. Sin embargo, los datos sugieren que la relación entre atribuciones de pobreza (de tipo estructural) y el sentido de comunidad está mediada por la participación comunitaria y tiene efectos en el desarrollo comunitario. Esta aportación resulta relevante para el diseño de programas de sensibilización, intervención y cooperación en países en vías de desarrollo.
CYBERSÉCURITÉ : LES BIAIS QUI IMPACTENT LES DÉCISIONS D’INVESTISSEMENT
Authors: Meier Olivier , Leroy Jeanne
Published: September 2022

En matière de cybersécurité, il existe une multitude de raisons expliquant pourquoi une entreprise n'a pas encore été piratée. Il se peut notamment qu’elle n’est pas détectée la présence des criminels informatiques ou qu'elles aient simplement eu de la chance cette année-là. L'absence d’intrusion ressort alors comme le fruit de bonnes prises de décisions en matière de recrutement et d'allocation des fonds. A l’inverse, lorsque des incidents se produisent, c’est davantage les erreurs techniques qui sont interrogées aux détriments des erreurs de choix dans l’investissement dans la cybersécurité. Or ces intrusions peuvent également avoir été indirectement causées par des erreurs dans les décisions d’investissements dans la cybersécurité. Ainsi, certaines conditions cognitives, appelées biais cognitifs, peuvent rendre une entreprise vulnérable aux failles de sécurité.
Sintiendo nuestro pasado incaico: Narrativas nacionales y emociones morales de estudiantes peruanos sobre la Conquista de América
Authors: Llerena Espezua Ximena , López Rodríguez César
Published: September 2022

Las narrativas nacionales constituyen un elemento fundamental para la transmisión y construcción de la memoria colectiva. Estas narrativas, que cuentan con una relevante presencia tanto dentro como fuera del ámbito escolar, poseen una fuerte carga identitaria, moral y emocional.

El propósito del presente estudio es analizar precisamente los elementos identitarios y emocionales presentes en las narrativas de estudiantes universitarios peruanos cuando narran el pasado de su nación. Para ello, se llevaron a cabo 27 entrevistas individuales semiestructuradas sobre la denominada Conquista de América en el siglo XVI, una de las narrativas fundacionales del Perú. Los resultados indican que muchos de los estudiantes se vinculan en términos identitarios con el imperio inca y experimentan emociones morales en primera persona, como el orgullo o la gratitud, basadas en esa identificación. Finalmente, se discuten las implicaciones de este tipo de vinculaciones emocionales para el desarrollo de un pensamiento histórico crítico en los estudiantes.
SEASONAL VARIATION OF THE RELATIONSHIP BETWEEN SUSPENDED SEDIMENT AND RIVER DISCHARGE
Authors: J. P. O. Obiero  , E. M. Baloyi
Published: September 2022

Information on measured sediment load is important in calibrating hydrologic models used in sediment yield prediction. The purpose of this study was to relate sediment load to discharge at a river section. An appropriate section was selected at the Lotanyanda river, Limpopo, South Africa. Depth integrated sediment samples were collected on various dates at an appropriate interval once a day and analyzed to determine the sediment concentration and turbidity. The water level and temperature readings were also taken at the time of sediment sampling. Information on sediment concentration and discharge was used to determine the sediment load on the dates when sampling commenced autumn through winter in 2016. Based on the values of measures of performance that included R2, NSE, RMSE, PBIAS and RSR, performance of predicted sediment concentration based on sediment rating curves was very good and could beused for predicting sediment load. The measures of performance, however varied from season to season. The relationship between sediment load and discharge varied from one season to another and the quality of fit (R2) based on regression analysis differed from one season to another. Knowledge of sediment load discharge relationship can be used in sediment load prediction based on discharge information.
UKRAINIAN PRESS OF THE NORTHERN BUKOVYNA
REGION DURING INTERWAR PERIOD IN PUBLICATIONS OF LVIV DILO NEWSPAPER
Authors: Romaniuk Myroslav
Published: September 2022

The development of Ukrainian press under Romanian rule during interwar period attracted much attention of Galician journalists due to the similar conditions experienced in Galicia ruled by Polish Republic. This article describes distinctive features of problematic and thematic aspects of Ukrainian press functioning in Bukovyna region and their reception by Dilo newspapers’s journalists. The author analyzed information materials including notes, announcements, reports covering the facts about Bukovynian press on a broad socio-political background. Either analytic and journalistic materials were examined. Thereby all materials concerning this problematic and thematic area were devided into several groups: materials (mostly problematic articles) about the situation of the Ukrainian press in Bukovyna region, represented in the context of socio-political issues; articles covering general press publishing problems; articles about separate publications, which characterized the problem-thematic features of journalistic texts; articles dedicated to prominent figures of the press movement, in particularly journalists, editors, publishers. Analytical and journalistic materials, written by Dilo newspaper journalists confirmed the difficult conditions for the Ukrainian press in Bukovyna region, the features of its creative impulses and functional failures.
The author stated that that journalistic materials of Dilo newspaper contained a significant amount of information that allows not only to clarify the characteristics of coverage of this topic, highlight important press issues, describe the specifics of presenting this information, but also to fill gaps in the history of Ukrainian press functioning in Bukovyna region, to supply it with new information that has not been recorded before in other historical sources.

Keywords: Ukrainian press, Northern Bukovyna, interwar period, history of the press, journalistic materials, readership.
Public Sector Financial Performance in Indonesia: Concepts and Regulations
Authors: Tumangkeng Steeva Y. L. , Anderson G. Kumenaung  , Debby Ch. Rotinsulu  , Joy E. Tulung  , Ita P. F. Rorong
Published: September 2022

Improving the public sector's financial performance is crucial to encouraging rapid economic growth throughout Indonesia. This paper aims to understand the essentials of the concepts and regulations of the public sector financial performance management in Indonesia. This study examines the performance of public sector organizations in Indonesia, especially looking at the definitions and regulations that form the basis of implementing this performance. The identification of the performance of the public sector in this paper seeks to see the basic concepts that serve as guidelines and the laws and regulations that form the background of the achievements of public organizations in Indonesia. In conclusion, it is revealed that the financial performance of the public sector in Indonesia refers to the applicable laws and regulations starting from the fundamental law, namely the 1945 Constitution, especially Article 23C, followed by several laws, government regulations, presidential regulations, and ministerial finance regulations. The measurement of public sector financial performance is regulated and determined by the Ministry of Finance through budget implementation performance indicators, which are seen from four aspects and twelve main indicators.
Stress Tolerance of African Catfish (Clarias gariepinus, Burchell, 1822) Larvae Fed on Spirulina platensis or Eisenia fetida in Partial Replacement of Caridina nilotica in Formulated Diets
Authors: Onura Callen Nyang’ate , Muthumbi Agnes Wangui , James James Gordon , Wang’ondu Virginia Wangechi
Published: September 2022

Enhanced growth and survival indicate a quality diet important in the production of quality fish larvae. Diet’s quality heavily depends on the quality of its protein which varies with inclusion levels and sources. This Influences stress responses and compromises wellbeing larvae due to diets suboptimal provision of nutritional requirements. However, there exists a knowledge gap on the performance of different proteins beyond growth and survival. The objective of this study was to determine the effects of partially replacing Caridina nilotica with Spirulina platensis or Eisenia fetida on stress tolerance of Clarias gariepinus larvae. This was conducted in 0.0, 0.3, 0.5, 0.7mg/l ammonia concentrations at 28°C and pH 7 within 24-hours using four- and six-weeks old larvae. The larvae were fed on formulated diets and a control at 10% body weight, five times a day. All larvae exposed to 0.7mg/l ammonia concentration died irrespective of the diet fed. A combination of 50%Caridina nilotica and 50%Eisenia fetida fed larvae posted low (p<0.001) total mortality of 78% and 52% in 0.5mg/l, stress indices of 457.3 and 342 and, took the longest time of 12.67 and 18.67-hours for half the number of larvae exposed to die in 0.7mg/l ammonia respectively for four- and six-week-old larvae. However, larvae fed on 50%Spirulina platensis and 50%Caridina nilotica posted higher (p<0.001) total mortality of 97% and 73% in 0.5mg/l, stress indices of 574.3 and 476.3 and, shortest time of 8 and 10.17-hours for half the number of 4- and 6-weeks old (respectively) larvae exposed to 0.7mg/l ammonia to die. Protein source influenced stress tolerance with Eisenia fetida diets enhancing better larvae tolerance to ammonia compared to Spirulina platensis and Caridina nilotica (control) diets. Caridina nilotica could be replaced by Eisenia fetida up to 50% and 25% by Spirulina platensis to enhance Clarias gariepinus larvae tolerance to ammonia stress.
The new economic reality: now to adapt bakery industry to changing trends of market development
Authors:   Federal State Autonomous Scientific Institution «Scientific Research Institute of the Bakery Industry», Kostyuchenko M.N. , Shaposhnikov I.I. ,   Federal State Autonomous Scientific Institution «Scientific Research Institute of the Bakery Industry», Martirosyan V.V. ,   Federal State Autonomous Scientific Institution «Scientific Research Institute of the Bakery Industry», Kosovan A.P. ,   Federal State Autonomous Scientific Institution «Scientific Research Institute of the Bakery Industry»
Published: September 2022

Статья рассматривает основные риски ведения хлебопекарного бизнеса, связанные с новой экономической реальностью и ростом неопределенности. Дана характеристика рисков, связанных с логистическими и ценовыми проблемами обеспечения отрасли основным и дополнительным сырьем, включая основные компоненты хлебопекарных комплексных улучшителей. С использованием предложенной авторами классификации видов спроса на хлебобулочные изделия рассмотрены тенденции его изменения с учетом опыта пандемии и вступления в трудоспособный возраст новых цифровых поколений зумеров и миллениалов. Авторы на основе выполненного НИИ хлебопекарной промышленности (г. Москва) исследования делают вывод, что зависимость хлебопекарной промышленности от импортных ингредиентов не носит критического характера, существуют в основном логистические проблемы, однако следует ожидать сужения ассортимента. Отечественные производители хлебопекарного оборудования пока не обладают достаточной рыночной силой для полного замещения импортной техники. Изменения потребительского спроса будут определяться темпами динамики доходов населения и демографической структурой отдельных региональных рынков. В сложившихся условиях повышаются требования к уровню менеджмента, его гибкости, игроки, не сумевшие адаптироваться к новым рискам, вынуждены будут покинуть рынок, вырастет уровень консолидации отрасли.
Determination of the texture indicators of the crumb of bakery products under cyclic reversible compressive strain
Authors:   Federal State Autonomous Scientific Institution «Scientific Research Institute of the Bakery Industry», Chernykh V.Ya. , Agamalov S.V. ,   Federal State Autonomous Scientific Institution «Scientific Research Institute of the Bakery Industry»
Published: September 2022

На основании проведенных исследований предлагается анализ реологического поведения мякиша батона нарезного при циклической обратимой деформации сжатия его пробы, представляющий собой цилиндр с наружным диаметром 36 мм и высотой 20 мм. Используемая в работе циклическая двухкратная обратимая деформация сжатия мякиша батона нарезного позволяет дополнительно устанавливать, кроме показателей твердости, индекса твердости, модулей упругости и количества механической энергии, еще и критерий когезии мякиша, который раскрывает потерю упругости межпоровых стенок при сжатии и который представляет собой частное от деления количества механической энергии, затрачиваемой на пластическую деформации при повторном сжатии мякиша на количество механической энергии, затраченной на пластическую деформацию при первом сжатии. Основным технологическим фактором, влияющим на изменение показателей текстуры при циклической деформации мякиша, была выбрана продолжительность хранения батонов нарезных после выпечки, которая составила 108 ч. В результате установлена динамика показателей текстуры в зависимости от продолжительности хранения хлебобулочных изделий после выпечки. Показано, что критерий когезии позволяет наглядно устанавливать окончание процесса черствения батона нарезного из муки пшеничной хлебопекарной высшего сорта.
A one-pot multicomponent K-10 clay catalyzed synthesis of 2-Amino-3,5-dicarbonitrile-6-thiopyridines
Authors: Sharma Pragati , Sinha Pragya , Bansal Raj K
Published: September 2022

2-Amino-3,5-dicarbonitrile-6-thiopyridines occupy a prominent place among the physiologically and biologically active scaffolds owing to their therapeutic applications in the treatment of Parkinson’s disease, asthma, urinary incontinence, kidney disease, the Hepatitis B Foundation infections, Creutzfeldt–Jacob disease, cancer, hypoxia/ischemia and epilepsy. A one-pot, multicomponent condensation of aldehydes, malononitrile and thiophenol catalyzed by Montmorillonite K-10 clay afforded 2-amino-3,5-dicarbonitrile-6-thiopyridines in good to excellent yields. All the products could be well characterized on the basis of spectral studies. The catalyst could be recycled three times without affecting the yields and even in the fourth recycling of the catalyst, the yield decreases marginally. This approach manifests environmentally benign feasibility in contexts of enhanced yields, milder conditions, short reaction times and reusability of the catalyst.
Ülfet Görgülü. İnsan Genomuna Müdahale Etik Tartışmalar-Fıkhi Yaklaşımlar. Ankara: Türkiye Diyanet Vakfı Yayınları, 2021. XII+210 s. ISBN 978-625-7672-44-3
Authors: YAVUZ ALTINTAŞ Miyase
Published: September 2022

İslam hukukunda güncel meselelere dair hayati öneme sahip ve gelişen tıp teknolojisine bağlı olarak sürekli değişim içinde olan alanlardan biri de tıp ve sağlık ile ilgili konulardır. Bu bağlamda insan genomuna yapılan tıbbi müdahaleler ve CRISPR-Cas9 teknolojisinin bu yönde kullanımına dair bir çalışmanın yakın zamanlara kadar yapılmamış olması bu alanda üzerinde çalışılmaya değer bir boşluğun varlığına işaret eder. Ülfet Görgülü’nün İnsan Genomuna Müdahale: Etik Tartışmalar-Fıkhi Yaklaşımlar isimli eseri, sözü edilen boşluğu doldurmaya yönelik ilk çalışma olması sebebiyle oldukça önemlidir. Bu çalışmada, insan genomuna yönelik tedavi, araştırma, geliştirme ve iyileştirme amaçlı yapılan genetik müdahalelerin, bireysel ve toplumsal etkilerini ‘fıkhi açıdan’ ele alan söz konusu eserin incelenmesi amaçlanmaktadır.
İbâzıyye Mezhebinin Teşekkülü, Sistematiği ve Farklılaşmalar
Authors: ÖLMEZ Sadi
Published: September 2022

Teşekkülü hicrî birinci asra denk gelen İbâzıyye mezhebi, fıkhî bir mezhep vasfından ziyade daha çok siyasi bir fırka olarak şöhret bulmuştur. Böyle bir anlaşılmaya maruz kalmasının altında selef olarak gördükleri bazı şahsiyetlerin Hâricîlerle iltisakları yatmaktadır. Bu durum İbâzıyye’nin fıkhî bir mezhep olarak bilinmesinin önüne geçmiştir. Bundan ötürü İbâzıyye daha çok mezhepler tarihi ve itikâdî görüşlerinden ötürü kelâm alanında çalışılmıştır. Bu yönelim mezhebin fıkhî yönünün ihmal edilmesine sebep olmuştur. Oysaki İbâzıyye zengin fıkhî müktesebatı ve literatürüyle müstakil bir ameli mezheptir. Hatta İbâzîlere göre kendi mezhepleri, kronolojik olarak teşekkül eden ilk fikhî mezheptir. İbâzıyye mezhebi Abdullah b. İbâz’a nispet olunmakla birlikte İbâzîler, Câbir b. Zeyd’i müessis olarak kabul ederler. İbâzîler hicrî üçüncü asrın sonralarına kadar kendilerini İbâzî olarak isimlendirmekten kaçınmışlardır. Çünkü onlar fıkhî mezheplerin, kurucularına nispet edilmesini gerektiğini, mezhep kurucularının da Câbir b. Zeyd olduğunu söylerler. Mezheplerinin Abdullah b. İbâz’a nispet edilmesinin siyasi saikler nedeniyle olduğunu ısrarla vurgularlar. Bundan ötürü İbâzîler mezheplerinin müessisi olarak Câbir b. Zeyd’i görürler. Câbir, tâbiîn alimlerinden olup Basra müftüsü olmasıyla da şöhret bulmuştur. İbâzıyye mezhebinin Câbir’den sonraki en etkili şahsiyeti olarak kabul edilen Ebû Ubeyde Muslim b. Ebî Kerime mezhebin teşekkülünde ve sistemleşmesinde son derece ehemmiyetli bir yere sahiptir. Ebû Ubeyde gerek Emevîler gerekse de Abbâsîler döneminde İbâzîlere yönelik baskılara rağmen mezhebi bir arada tutarak Basra dışına özellikle de Kuzey Afrika’da yayılmasını sağlamıştır. İbâzıyye mezhebinin hicrî ikinci asrın ikinci çeyreğinden itibaren farklı coğrafyalara taşınması bu mezhebin sistemleşmesi bakımından önemli bir süreç olmuştur. Ayrıca İbâzıyye mezhebinin Basra dışındaki bölgelere yayılması İbâzî fıkıhla ilgili tedvinlerin artmasını sağlamıştır. İbâzî fıkhının günümüze ulaşmış kıymetli eserlerinin başında gelen Ebû Gānim el-Horâsânî’nin el-Müdevvenetü’l-Kübrâ’sı bu dönemin mahsulüdür. İbâzıyye mezhebi sünnî mezheplerin fıkhî meselelerde başvurdukları istinbât ve istidlâl yönteminden farklı bir yöntem kullanmamıştır. Kur’ân, Sünnet, icmâ, kıyas ve diğer istidlâl yöntemleri İbâzî fakihlerce de başvurulan yöntemlerdir. Dolayısıyla İbâzîlerin kullanmış olduğu usûl yöntemlerinin diğer mezheplerin usûl yöntemiyle tam olarak aynı olmasa da birbirine çok yakın olduğunu söylemek mümkündür. İbâzîlerin istidlâlî deliller kısmında diğer mezheplerden farklılaşması ilham konusunda olmuştur. İbâzîlerde tartışmalı olmakla birlikte ilham istidlâlî delillerden biri olarak zikredilmiştir. Bu çalışmada İbâzıyye mezhebinin Hâricîlerle bağlantısı, mezhebin ortaya çıkışı, fıkhı ve usûl anlayışı ele alınmıştır.
MHD and Heat Generation Along a Vertical Flat Plate with Variable Viscosity and Viscous Dissipation: A Numerical Solution
Authors: Munira Sirazum , Sarker Sree Pradip Kumer , Alam Md. M.
Published: September 2022

Numerous researchers have looked into the importance of natural convection in the context of engineering, and this topic has been extensively studied. This study investigates the nature of heat generation and viscous dissipation in MHD natural convection flow with changing viscosity. Laminar flow and boundary layer equations with unstable boundaries in two dimensions are the subject of this article. The fundamental governing equation is turned into a dimensionless governing equation by using the necessary variables. The Crank Nicolson scheme is an efficient implicit finite difference approach for numerical computations of these equations. Heat generation and viscosity dissipation owing to MHD and changing viscosity were explored in this work. Several effects of various parameters are demonstrated in this study, and they are compared to the velocity and temperature profiles, skin friction, and local heat transfer coefficients of other researchers. Compare the present numerical results to the work outcomes that were previously released. It also compares the number of works available to the number of works published previously. The results are given in both figures and tables for various values of related physical parameters.
A MORE ACCURATE CALCULATION OF MAGNETIC LOSSES IN THE INDUCTION MOTOR
Authors: Željko Hederić  , Muharem Mehmedović  , Krešimir Miklošević
Published: September 2022

The work presents a comparison of results of the calculation of eddy current losses in the induction motor teeth by virtue of the analytical method and the finite element method. Under the assumption that sheet permeability and conductivity are constant, total eddy current losses can be calculated as the aggregate of pulsation and surface losses. Instructions are given regarding the manner of calculation of total losses in the teeth for all teeth forms, taking into consideration the suppression of flows in the sheets, flow attenuation in the teeth and the sheet and sheet package processing factors. Valuation of the analytical model of loss calculation was also made by virtue of comparison with the measurements.
ELECTRIC RAILWAY POWER CONSUMPTION
Authors: Milivoj Mandić  , Ivo Uglešić  , Viktor Milardić
Published: September 2022

The electric railways is a specific consumer of the electric power system. For the purpose of using electric energy rationally and making adequate savings, efforts are made to optimize electric energy consumption of electric trains and other electric railway facilities. The work shows the train movement simulation algorithm which serves to determine primarily the mechanical and then also the electric power required for traction. The sections of the electrified tracks are supplied from the electric traction substation (TS) and, for the requirements of the electric traction calculation, an electric network is formed. Based on the maximum time table for a certain time period, calculation is done of the electric circumstances; electricity, voltage, electric power, as well as the total consumed electric energy. For the determination of the electric energy supply of the traction unit, movement resistances of the certain train on each section need to be calculated. Input data necessary for such a calculation are the tracks profile parameters, planned movement speeds on certain sections, and the properties of the train and the locomotive. Besides the train movement simulation model, the article also shows the analysis of impact factors on the electric energy consumption for the electromotor train which travels the Croatian suburban rails. The results are obtained by the train movement simulation algorithm, by virtue of which the locations of trains are calculated, as well as their mechanical and electric powers necessary for traction. The particular example of the supply of the existing SS serves for comparing the results obtained by electric traction calculation and measurement. Some of the results are given of the electric traction simulation for the Zaprešić SS at the supply of the suburban Podsused factory − Samobor − Bregana which is planned for construction.