bluuebunny/crossref_metadata_2025_split huggingface dataset:
La participación y gobernanza en la planeación urbana de Acapulco
Authors: Covarrubias Melgar Felipe , Rodríguez Herrera América Libertad , Galán Castro Erick Alfonso , Ruz Vargas Manuel I. , Reyes Umaña Maximino 
Published: October 2022

Abstract: Acapulco is an influential development pole in the territorial dynamics of the State of Guerrero; therefore, the study of its urban planning is relevant from the perspective of democratic governance and related political processes at the regional level. We analyze the discourse of the citizen participation workshops of the 2015 urban planning process, where an ideal of a tourist city without environmental vision prevailed, a participation exercise carried out only to legitimize the planning process without achieving it. We showed that the auxiliary planning bodies fail to build consensus, the presence of an influential group of technicians, and the null representativeness of vulnerable groups. It is necessary that an inclusive city and the collective interest be claimed from civil society.Resumen: Acapulco es un polo de desarrollo influyente en las dinámicas territoriales del estado de Guerrero, por ende, el estudio de su planeación urbana es relevante desde la perspectiva de gobernanza democrática y de los procesos políticos relacionados con ésta en el ámbito regional. Analizamos el discurso de los talleres de participación ciudadana del proceso de planeación urbana de 2015, donde en el cual prevaleció un ideal de ciudad turística sin visión ambiental, un ejercicio de participación realizado únicamente para legitimar el proceso de planeación sin lograrlo. Mostramos que los organismos auxiliares de planeación no logran construir consensos, debido a la presencia de un grupo de técnicos influyente y a la nula representatividad de grupos vulnerables. Es necesario que una ciudad inclusiva y el interés colectivo sean reclamados desde la sociedad civil.Résumé : Acapulco est un pôle de développement influent dans la dynamique territoriale de l’état du Guerrero. Par conséquent, l’étude de
sa planification urbaine est pertinente pour la perspective de la gouvernance démocratique et des processus politiques connexes régionaux.
Nous analysons le discours des ateliers de participation citoyenne du processus de planification urbaine de 2015, au cours desquels a prévalu un idéal de ville touristique sans vision environnementale : il s’agit alors d’un exercice de participation réalisé uniquement pour légitimer le processus de planification, sans résultat concret. Nous avons montré que les organes auxiliaires de planification ne parviennent pas à construire un consensus, en raison de la présence d’un groupe influent de techniciens et d’une représentativité nulle des groupes vulnérables. La ville inclusive et l’intérêt collectif doivent être revendiqués par la société civile.
Development of UCN sources at PNPI
Authors: Serebrov Anatolii , Lyamkin Vitaliy 
Published: October 2022

This article reviews the development of various sources for ultracold neutrons (UCNs) at the Petersburg Nuclear Physics Institute (PNPI). For 45 years, PNPI has proposed and manufactured cryogenic devices for neutron conversion to low energies. Based on beryllium, hydrogen and deuterium, they can be operated in the intense radiation fields near the core of a nuclear reactor. A more recently launched UCN source development utilizes superfluid helium (He-II) as conversion medium. Initially proposed and designed for PNPI’s old WWR-M reactor, the project has been reshaped to equip the institute’s PIK reactor with a modern UCN source of this type. The projected UCN density in the closed source chamber is 2.2 × 103 cm−3, which, as calculations of neutron transport show, will provide 200 cm−3 in the chambers of a neutron EDM spectrometer connected to the source by a UCN guide. Experiments at PNPI with a full-scale UCN source model have demonstrated that a heat load of 60 W can be removed from the He-II in the converter at a temperature of 1.37 K. This fact confirms the practical possibility to implement low-temperature converters under “in-pile” conditions with large heat inflows. The review concludes with a presentation of various proposed options for a He-II based UCN source at the European Spallation Source.
Measurement of capillary waves with a laser wave recorder
Authors: Sterlyadkin V. V. , Kulikovsky K. V. 
Published: October 2022

Objectives. Capillary waves on the sea surface play an important role in remote sensing, both in the optical and microwave wavelength ranges. However, processes of electromagnetic radiation scattering on a rough sea surface cannot be studied in the absence of reliable monitoring of the parameters of these capillary waves under natural conditions. Therefore, the aim of the present work was to develop methods for such monitoring purposes and test them under laboratory and field conditions.Methods. Novel laser-based methods for recording capillary waves at frequencies up to 100 Hz were developed in the laboratory. The proposed remote methods, which do not interfere with the sea surface, are based on the recording of scattered laser radiation using a video camera.Results. Under laboratory conditions, spatial profiles, time dependences of heights for all points of a laser sweep trajectory, and frequency power spectra were obtained. It is shown that slopes in capillary waves can reach 30° and that the amplitude of capillary waves at frequencies above 25 Hz does not exceed 0.5 mm. A new version of a scanning laser wave recorder was tested under natural conditions on an offshore platform. The measurements confirmed the possibility of measuring the parameters of sea waves on spatial scales covering 3 orders of magnitude: from units of millimeters to units of meters.Conclusions. The developed wave recorder can be used to carry out direct measurements of “instantaneous” sea surface profiles with a time synchronization precision of 10-4 s and a spatial accuracy of better than 0.5 mm. The method makes it possible to obtain large series (21000) of «instantaneous» wave profiles with a refresh rate of 60 Hz, which opens up opportunities for studying the physics of wave evolution and the influence of wave parameters on the scattering of electromagnetic waves. The advantage of the method is the direct nature of the measurement of applicates and other wave characteristics not only in time but also in space. The entirely remote method does not distort the properties of the surface and is not affected by wind, waves, or sea currents. The possibility of using the proposed method under natural conditions at any time of the day and in a wide range of weather conditions has been experimentally ascertained.
Implementation of stochastic signal processing algorithms in radar CAD
Authors: Konopel'kin M. Yu. , Petrov S. V. , Smirnyagina D. A. 
Published: October 2022

Objectives. In 2020, development work on the creation of a Russian computer-assisted design system for radars (radar CAD) was completed. Radar CAD provides extensive opportunities for creating simulation models for developing the hardware-software complex of radar algorithms, which take into account the specific conditions of aerospace environment observation. The purpose of the present work is to review and demonstrate the capabilities of radar CAD in terms of implementing and testing algorithms for processing stochastic signals.Methods. The work is based on the mathematical apparatus of linear algebra. Analysis of algorithms characteristics was carried out using the simulation method.Results. A simulation model of a sector surveillance radar with a digital antenna array was created in the radar CAD visual functional editor. The passive channel included the following algorithms: algorithm for detecting stochastic signals; algorithm for estimating the number of stochastic signals; direction finding algorithm for stochastic signal sources; adaptive spatial filtering algorithm. In the process of simulation, the algorithms for detecting and estimating the number of stochastic signals produced a correct detection sign and an estimate of the number of signals. The direction-finding algorithm estimated the angular position of the sources with an accuracy of fractions of degrees. The adaptive spatial filtering algorithm suppressed interfering signals to a level below the antenna's intrinsic noise power.Conclusions. The processing of various types of signals can be simulated in detail on the basis of the Russian radar CAD system for the development of functional radar models. According to the results of the simulation, coordinates of observing objects were obtained and an assessment of the effectiveness of the algorithms was given. The obtained results are fully consistent with the theoretical prediction. The capabilities of radar CAD systems demonstrated in this work can be used by specialists in the field of radar and signal processing.
Development and research of uninterruptible power supply system for networks with supply voltage up to 24 V
Authors: Sharov I. M. , Demin O. A. , Sudakov A. A. , Yarlykov A. D. 
Published: October 2022

Objectives. Due to the continuous rapid development of renewable energy sources, requirements for secondary power supply systems keep increasing from year to year. Productive uptime for end users is dependent on the efficiency and stability of the power supply system. Such systems should be able to distribute and store energy from renewable sources having various parameters and configurations. Therefore, the present work is aimed at developing technical solutions for efficient uninterruptible secondary power supply systems in low voltage DC networks.Methods. Advanced circuitry solutions are used for performing pulse conversions with high efficiency. The flexible hardware-software system is used for implementing the parameter control system.Results. An uninterruptible power supply for low-voltage DC networks is developed. The description of subsystems and calculations for all main elements including the power ones are given. Using a contemporary component base, the system prototype is assembled, configured, and measured by parameters. The presented solutions allow achieving the universality of the system in terms of the input and output voltage range. Support for the fast-charging Power Delivery protocol is integrated. As well as regulating the battery charging current and voltage, the Li+ battery charging controller permits changes in the number of chargeable cells. The monitoring and control unit monitors network parameters and controls the system automation. Using a microcontroller as the control device, it is possible to easily change control parameters by changing software settings. Dual redundancy of the module monitoring the built-in battery parameters is used to ensure the reliability and safety of system functioning. Support for the standardized I2C communication protocol with a separate power bus allows any necessary sensors to be connected for monitoring system parameters. External high-power devices controlled by a PWM signal may be added, if required. In the paper, the Li+ battery charging profile recommended by the manufacturer is provided.Conclusions. The designed system provides stable power supply to end users at a power consumption up to 40 W for at least 45 min. The automation demonstrates reliable operation.
Structure of associative heterarchical memory
Authors: Dushkin R. V. , Lelekova V. A. , Stepankov V. Y. , Fadeeva S. 
Published: October 2022

Objectives. Since the 20th century, artificial intelligence methods can be divided into two paradigms: top-down and bottom-up. While the methods of the ascending paradigm are difficult to interpret as natural language outputs, those applied according to the descending paradigm make it difficult to actualize information. Thus, natural language processing (NLP) by artificial intelligence remains a pressing problem of our time. The main task of NLP is to create applications that can process and understand natural languages. According to the presented approach to the construction of artificial intelligence agents (AI-agents), processing of natural language should be conducted at two levels: at the bottom, methods of the ascending paradigm are employed, while symbolic methods associated with the descending paradigm are used at the top. To solve these problems, the authors of the present paper propose a new mathematical formalism: associative heterarchical memory (AH-memory), whose structure and functionality are based both on bionic principles and on the achievements of top-down and bottom-up artificial intelligence paradigms.Methods. Natural language recognition algorithms were used in conjunction with various artificial intelligence methods.Results. The problem of character binding as applied to AH-memory was explored by the research group in earlier research. Here, abstract symbol binding was performed using multi-serial integration, eventually converting the primary symbols produced by the program into integrated abstract symbols. The present paper provides a comprehensive description of AH-memory in the form of formulas, along with their explanations and corresponding schemes.Conclusions. The most universal structure of AH-memory is presented. When working with AH-memory, a developer should select from a variety of possible module sets those AH-memory components that support the most successful and efficient functioning of the AI-agent.
Pengaruh Kualitas Pelayanan Dan Kepuasan Terhadap Loyalitas Pelanggan Wifi Indihome Pt. Telekomunikasi Indonesia Wilayah Sumatera Selatan
Authors: Rohmial Rohmial 
Published: October 2022

The purpose of this study to examine the effect of service quality and satisfaction on customer loyalty P.T. IndiHome. The test was conducted on 83 people with non-probability sampling technique, while the sampling used incidental sampling using the Slovin formula. Calculations The analysis technique was performed using normality test, t test, F test, multiple linear regression and determination test. The results of this study indicate the quality of service and satisfaction is good but still need to improve the speed and accuracy in handling customer complaints. Simultaneously service quality and satisfaction have a positive and significant effect on customer loyalty at PT Telekomunikasi Indonesia (WITEL) South Sumatra, where the calculated F value = 74,588 with a significant value of 0.00 < 0.05. From the results of the study, the magnitude of the multiple linear regression equation is Y = 0.781+0.117X1+0.704X2+e

Keywords: Service Quality, Satisfaction, Customer Loyalty.
МИССИИ ОБСЕ КАК СРЕДСТВО ПРЕДУПРЕЖДЕНИЯ КОНФЛИКТОВ И УРЕГУЛИРОВАНИЯ КРИЗИСНЫХ СИТУАЦИЙ (НА ПРИМЕРЕ МИССИИ ОБСЕ В КОСОВО)
Authors: Демидова Татьяна Константиновна , Тулупова Елена Олеговна , Хоменко Виолетта Дмитриевна 
Published: October 2022

В современных международных отношениях вопросы безопасности стабильно стоят на повестке дня. Одной из основных причин нестабильности в различных регионах мира являются региональные конфликты. Пространство ОБСЕ не исключение. Косово, Приднестровье, Украина – основные затяжные конфликты в Восточной Европе, в каждом из которых присутствует или присутствовала соответствующая миссия ОБСЕ. Но какую роль играют эти миссии, есть ли в них реальный смысл и реальная польза? Проведенный в статье анализ позволил, опираясь на представленные данные, дать ответы на эти вопросы.
Analysis of the Influence of Problem Based Learning Models Assisted by Wordwall Media on Science Learning Outcomes of Primary School Students
Authors: Syaifi Alifia Citra , Murwitaningsih Susanti 
Published: October 2022

This study aims to analyze the effect of the Problem Based Learning model assisted by Wordwall media in thematic learning of science content on force and motion material on the learning outcomes of fourth-grade students at SDN Pasir Putih 03. This quantitative research design, True Experiment, used a posttest-only control group final test. Cluster random was the sampling used. Biserial Point Correlation was used to test the validity and produces 25 valid questions and five drop questions from a total of 30 multiple-choice questions. The KR-20 was used to test reliability and get rcount = 0,75 > rtable = 0,34 so the instrument is reliable. Liliefors test in order to test normality obtained values for the control class and experimental class, namely Lcount = 0,1467 < Ltable = 0,152 and Lcount = 0,0972 < Ltable = 0,152 which means that both data were normally distributed. Fisher's test is used to test the homogeneity and get homogeneous results, namely Fcount = 1,67 < Ftable = 1,79. T-test to test the hypothesis of tcount = 8,97 > ttable = 1,668 at 0.05 with dk = 66. Then H0 was rejected, and H1 was accepted, namely the influence of problem-based learning models assisted by Wordwall media in thematic learning of science content on force and motion material on the learning outcomes of fourth-grade students at SDN Pasir Putih 03. The results of this study showed that the use of the PBL model could make students more active, think critically, and independent. Where with this model, students are required to find their solutions to problems by conducting an experimental, and with the help of website-based Wordwall media, students become more enthusiastic and not bored because, with the help of this media, students can learn while playing.
The strategies used by the school health team during the delivery of sexual health information to unmarried adolescents in Malaysia
Authors: Abdul Hamid Siti Hazariah , Fallon Debbie 
Published: October 2022

Background: Adolescents’ sexual health is vital to overall health and well-being to achieve sustainable development goals. Yet, research on the strategies used by Malaysian school health teams regarding their experiences of providing sexual health information to adolescents is sparse.
Objective: This study was conducted to explore the experiences of school health teams in Malaysia who provide unmarried adolescents with sexual health information either during school health visits or at health clinics, with a particular interest in the strategies they use to educate these young people.
Methods: This qualitative study used semi-structured interview data from twenty participants from four multidisciplinary school health teams. The participants included staff nurses, medical officers, and family medicine specialists. The transcripts were analysed for common themes.
Results: Four main themes were identified: discourse on risk, being selective, using scare tactics and maintaining own honour. The findings indicate that the interactions between school health teams and unmarried adolescents were not always ‘adolescent friendly’. The school health teams tended to use discourses of ‘risk’ or scare tactics to encourage abstinence in the adolescents they advised. Staff were also selective about the information they gave, prioritising notions of ‘maintaining honour’ over ‘safer sex’ messages.
Conclusion: This study revealed how school health teams perceived sexual health education to be about moral issues and social attitudes. Influenced by both culture and religion, the sexual health services provided were underpinned by a ‘moral’ approach and promoted abstinence. However, most of the nurses in this study held the belief that sexual health knowledge acts as an encouragement for sexual activity. Thus, as part of school health teams, nurses need to embrace evidence that improved sexual health education may delay sexual initiation and prevent unintended pregnancy and HIV/STDs.
Biomechanical evaluation of lumbar spondylolysis repair with various fixation options: A finite element analysis
Authors: Ye Yuchen , Jin Shichang , Zou Yang , Fang Yuekun , Xu Panpan , Zhang Zhili , Wu Nan , Zhang Changchun 
Published: October 2022

Objective: This study was designed to compare the biomechanical properties of lumbar spondylolysis repairs using different fixation methods by using three-dimensional finite element analysis.Methods: Five finite element models (A, B, C, D, and E) of L4-S1 vertebral body were reconstructed by CT images of a male patient (A: intact model; B: spondylolysis model; C: spondylolysis model with intrasegmental direct fixation by Buck screw; D: spondylolysis model with intersegmental indirect fixation by pedicle screw system; E: spondylolysis model with hybrid internal fixation). L5-S1 level was defined as the operative level. After the intact model was verified, six physiological motion states were simulated by applying 500 N concentrated force and 10 Nm torque on the upper surface of L4. The biomechanical properties of the three different internal fixation methods were evaluated by comparing the range of motion (ROM), maximum stress, and maximum displacement.Results: Compared with Model B, the ROM and maximum displacement of Model C, D, and E decreased. The maximum stress on L5/S1 disc in models A, B, and C was much higher than that in Model D and E under extension and lateral bending conditions. Under axial rotation and lateral bending conditions, the maximum stress of interarticular muscle and internal fixation system in Model B and Model C was significantly higher than that in Model D and Model E. In contrast to Model D, the stress in Model E was distributed in two internal fixation systems.Conclusion: In several mechanical comparisons, hybrid fixation had better biomechanical properties than other fixation methods. The experimental results show that hybrid fixation can stabilize the isthmus and reduce intervertebral disc stress, which making it the preferred treatment for lumbar spondylolysis.
Lignocellulosic xylitol production from corncob using engineered Kluyveromycesmarxianus
Authors: Zhang Jia , Xu Teng , Wang Xiaohang , Jing Xiaoyan , Zhang Jia , Hong Jiong , Xu Jian , Wang Jichao 
Published: October 2022

Xylitol production from lignocellulose hydrolysate is a sustainable and environment-friendly process. In this study, a systematic process of converting corncob waste into xylitol is described. First, the corncobs are hydrolyzed with acid to a hydrolysate. Second, Kluyveromyces marxianus YZJQ016 derived from K. marxianus YZJ074, constructed by overexpressing ScGAL2-N376F from Saccharomyces cerevisiae, CtXYL1 from Candida tropicalis, and KmZWF1 from K. marxianus, produces xylitol from the hydrolysate. A total of ten xylose reductase genes were evaluated, and CtXYL1 proved best by showing the highest catalytic activity under the control of the KmGAPDH promoter. A 5 L fermenter at 42°C produced 105.22 g/L xylitol using K. marxianus YZJQ016—the highest production reported to date from corncob hydrolysate. Finally, for crystallization of the xylitol, the best conditions were 50% (v/v) methanol as an antisolvent, at 25°C, with purity and yield of 99%–100% and 74%, respectively—the highest yield reported to date.