bluuebunny/crossref_metadata_2025 huggingface dataset:
Gordon Holmes Syndrome Model Mice Exhibit Alterations in Microglia, Age, and Sex-Specific Disruptions in Cognitive and Proprioceptive Function
Authors: George Arlene J. , Wei Wei , Pyaram Dhanya N. , Gomez Morgan , Shree Nitheyaa , Kadirvelu Jayashree , Lail Hannah , Wanders Desiree , Murphy Anne Z. , Mabb Angela M.
Published: December 2023

Gordon Holmes syndrome (GHS) is a neurological disorder associated with neuroendocrine, cognitive, and motor impairments with corresponding neurodegeneration. Mutations in the E3 ubiquitin ligaseRNF216are strongly linked to GHS. Previous studies show that deletion ofRnf216in mice led to sex-specific neuroendocrine dysfunction due to disruptions in the hypothalamic–pituitary–gonadal axis. To address RNF216 action in cognitive and motor functions, we testedRnf216knock-out (KO) mice in a battery of motor and learning tasks for a duration of 1 year. Although male and female KO mice did not demonstrate prominent motor phenotypes, KO females displayed abnormal limb clasping. KO mice also showed age-dependent strategy and associative learning impairments with sex-dependent alterations of microglia in the hippocampus and cortex. Additionally, KO males but not females had more negative resting membrane potentials in the CA1 hippocampus without any changes in miniature excitatory postsynaptic current (mEPSC) frequencies or amplitudes. Our findings show that constitutive deletion ofRnf216alters microglia and neuronal excitability, which may provide insights into the etiology of sex-specific impairments in GHS.
Cell-Type Specific Connectivity of Whisker-Related Sensory and Motor Cortical Input to Dorsal Striatum
Authors: Sanabria Branden D. , Baskar Sindhuja S. , Yonk Alex J. , Linares-Garcia Iván , Abraira Victoria E. , Lee Christian R. , Margolis David J.
Published: December 2023

The anterior dorsolateral striatum (DLS) is heavily innervated by convergent excitatory projections from the primary motor (M1) and sensory cortex (S1) and considered an important site of sensorimotor integration. M1 and S1 corticostriatal synapses have functional differences in their connection strength with striatal spiny projection neurons (SPNs) and fast-spiking interneurons (FSIs) in the DLS and, as a result, exert distinct influences on sensory-guided behaviors. In the present study, we tested whether M1 and S1 inputs exhibit differences in the subcellular anatomical distribution of striatal neurons. We injected adeno-associated viral vectors encoding spaghetti monster fluorescent proteins (sm.FPs) into M1 and S1 in male and female mice and used confocal microscopy to generate 3D reconstructions of corticostriatal inputs to single identified SPNs and FSIs obtained through ex vivo patch clamp electrophysiology. We found that M1 and S1 dually innervate SPNs and FSIs; however, there is a consistent bias towards the M1 input in SPNs that is not found in FSIs. In addition, M1 and S1 inputs were distributed similarly across the proximal, medial, and distal regions of SPN and FSI dendrites. Notably, closely localized M1 and S1 clusters of inputs were more prevalent in SPNs than FSIs, suggesting that cortical inputs are integrated through cell-type specific mechanisms. Our results suggest that the stronger functional connectivity from M1 to SPNs compared to S1, as previously observed, is due to a higher quantity of synaptic inputs. Our results have implications for how sensorimotor integration is performed in the striatum through cell-specific differences in corticostriatal connections.
Associations Between Social Support, Resilience, HIV Stigma, And Depression Among People Living With HIV In Malang, Indonesia: A Cross-Sectional Study
Authors: Wardojo Sri Sunaringsih Ika , Rosadi Rakhmad
Published: December 2023

Objective — This study aimed at analyzing the associations between social support, resilience, HIV stigma and depression among people living with HIV (PLHIV) in Malang, Indonesia. Material and Methods — We carried out a cross-sectional study using convenience sampling at four community health centers in Malang, Indonesia, from June to September 2018. All PLHIV 18 years of age and older coming to a healthcare center for medical services were offered a possibility to participate in this study. Consequently, 634 PLHIV enrolled in antiretroviral therapy (ART) programs were recruited. Measurement tests included sociodemographic questionnaire, Multidimensional Scale of Perceived Social Support (MSPSS), HIV Stigma Scale, Connor–Davidson Resilience Scale (10-item version), and Center for Epidemiological Studies Depression Scale Revised (CESD-R). While maintaining the confidentiality in the course of data collection, clinical staff assisted with recruiting and face-to-face interviews via standardized questionnaires. Multivariate logistic regression models were employed to assess the relationships between predictors and depression. Results — A multivariate logistic regression analysis revealed that higher levels of social support and resilience, along with a lack of stigma, were associated with lower levels of depressive symptoms (Nagelkerke's R2=0.2). Conclusion — Calls to action to encourage and raise public awareness through health policies in Indonesia that focus on improving social support and resilience, as well as reducing social stigma, may have a positive impact on supporting the psychological health of PLHIV.
Awareness And Attitudes Of Pregnant Women Towards STI Prevention And Treatment In New Sociomedical Conditions Of COVID-19 Pandemic
Authors: Timoshilov Vladimir I. , Breusov Aleksey V. , Nasibov Ali Ch. , Khabibulin Ramis R. , Krivoputskikh Diana S. , Antyukhina Margarita N.
Published: December 2023

Background — Restriction on in-person events during the pandemic constitutes a dangerous factor causing the reduced awareness of youth of the risks and measures to prevent sexually transmitted infections (STIs). Consequently, pregnancies ending in childbirth in 2022 occurred against the backdrop of the COVID-19 situation, characterized by a decrease in preventive activity. Information deficit in 2020-2021 and the emphasis on issues of maintaining health in connection with the psychological factors of the pandemic accounted for peculiarities of awareness of young women regarding the prevention of STIs. The objective of our study was to analyze the knowledge and attitude of women towards prevention, diagnosis and treatment of STIs during pregnancy and to highlight the differences that arose depending on their education profile/profession. Materials and Methods — In 2022, against the background of the cancelation of most anti-epidemic restrictions, we conducted a sociological survey of 518 pregnant women. The respondents were divided into two comparable subgroups (178 respondents with education in medicine/biology and 340 females with other education profiles). This sample size corresponded to a significance level of 95%. Data processing was based on the calculation of relevant indicators (the proportion of parents – women and their husbands – screened for STIs prior to the conception, readiness for systematic screening examinations, and intentions to seek medical help for STIs). The significance of the difference in values between the subgroups of respondents with education in medicine/biology and education in humanities or technology was assessed using the Student’s t-test. Results — We revealed that 66.8% of respondents were focused on productive contact with the health care system, 74.2% of women with education in medicine/biology were examined for STIs, which statistically significantly (p<0.05) exceeded the proportion of women with other education profiles (62.9%). At the same time, the level of trust in the public venereological services vs. private clinics was significantly higher among all categories of pregnant women (p<0.01). Conclusion — Our study exhibited a high level of awareness among pregnant women about the STIs and the beneficial importance of preparation for conception by STI prevention. Women with education in medicine/biology had a more conscious attitude towards screening examinations for STIs, but at the same time demonstrated a higher desire for self-medication. We established that during the pandemic, young people in general have shown a stronger intention to receive medical care in private clinics, but in case of pregnancy exhibited higher confidence in public medical facilities.
Changes In Objective Characteristics In Brain Electrical Activity In Newborns As A Function Of Birth Weight
Authors: E. Runnova Anastasiya , Zhuravleva Yuliya A. , Egorov Evgeniy N. , Drozhdeva Evgeniya E.
Published: December 2023

The aim of the present study was to detect characteristic features of oscillatory electrical activity of the brain in the first day of postnatal life depending on the weight of newborns. Material — Eighteen neonates of conditionally normal gestational age (37.7±1.5 weeks) weighing 2500±720 g were included in the study. All neonates were children of first births of mothers aged 18-35 years, all pregnancies were physiologic, conventionally normal, without significant complications. The height of the newborns was 47±4.643 cm and head circumference was33.0±2.908 cm. The Apgar score at delivery was 7-9 points. All newborns were divided among groups 1 (weight: 2850-4000 gr), 2 (weight: 2000-2800 gr) and 3 (1200-2000 gr). Each newborn underwent EEG monitoring (EEG, monopolar recording, channels C3 and C4) for 40 minutes during the first 12 hours after birth. Methods — Automatic processing of EEG was performed without separating the monitoring records into sleep and wakefulness stages. Oscillatory patterns were calculated for each EEG channel based on the continuous wavelet transform method. Statistical estimations of the number and duration of oscillatory patterns developing in different EEG frequency ranges were performed. Results — A strong correlation was found between neonatal birth weight and integral characteristics of the number \ duration of oscillatory patterns in the low-frequency band [4; 6] Hz (r=-0.878\0.920). Practically healthy newborns with different birth weights show statistically different EEG characteristics in the [4; 6] Hz band in the first 12 hours after birth (p-value≤0.005). Conclusion — Electrical activity of the brain varies significantly depending on the weight of newborns immediately after birth. Monitoring of EEG signals according to the proposed algorithm may become the basis for the development of additional tools for early detection of possible disorders of neurological development of the newborn.
Task execution flow management in the software development process under the minor change event
Authors: Kungurtsev Оleksii B. , Chorba Radim V.
Published: December 2023

In modern project management methodologies, insufficient attention is devoted to the process of promptly responding to minor changes during task execution, which necessitate adjustments to the priorities of ongoing tasks. The existing approaches are not sufficiently detailed for a fundamental reassessment of priorities while such changes significantly impact project execution. The available materials and approaches do not provide ready-made solutions. This article proposes a task planning model during project execution. The model comprises the following key elements: Executor, Task Set, Task Execution Progress, and Calculation of Task Execution Quality Indicators. The Executor element contains information for identifying the developer and allocating their working time. It is anticipated that under exceptional conditions, a portion of non-working time may be scheduled for task execution. The Task Set element represents planned temporal characteristics and the priority of each task. The Task Execution Progress element contains information about actual dates, hours, and durations of segments during which the task was executed. The calculations of task execution quality indicators enable obtaining operational information about the progress of specific projects and assessing the effectiveness of process management. Basic algorithms for managing task sequences have been developed. The “Addition of a New Task” algorithm implements a task queue based on priority and start and end dates. The “Task Priority Change” algorithm envisages the possible repositioning of a task, as well as cases of task transfer to another executor or rescheduling tasks during non-working hours. Additionally, algorithms for notification of critical planning changes for dependent tasks (“Notification of Critical Planning Change for Dependent Tasks”) and critical deprioritization of dependent tasks (“Notification of Critical Deprioritization for Dependent Tasks”) have been developed. The proposed model and algorithms allow for accommodating micro-changes in the project and responding to their occurrence. The validation of research results in a real project demonstrated the effectiveness of the proposed model and algorithms while concurrently revealing a certain range of open questions requiring further consideration. Future research directions include the classification of micro-change scenarios, analysis of possible scenarios for suspending the execution of current tasks, and the development of scenarios and algorithms for selecting executors.
Software implementation of the data encryption module on the BeagleBone platform for data transmission systems with increased cryptoresistance
Authors: Seniv Maksym M. , Rovenchak Sviatoslav I. , Yakovyna Vitaliy S.
Published: December 2023

In today's digital world, where the exchange of information is an integral part of our daily lives, ensuring information security becomes a criticaltask. This work aimsto develop an information protection module for data encryption on the BeagleBone platform for data transmission systems with increased crypto resistance. Itis a hardware system based on a BeagleBone AI 64 microcomputer with antennas for transmitting/receiving data. Since the information is transmitted over a physically unprotected channel, developing a module that will encrypt the data is necessary. The information protection module ensures the confidentiality of the transmitted data in the system using the AES symmetric encryption algorithm with a variable key length (128/192/256 bits). Regardless of the hardware platform, it is characterized by universality, as it can be run on the Linux kernel adapted for use on embedded systems. Providesoptions for configuring protocols and encryption algorithms. In the process of developing the security module, modern encryption methods and algorithms were used (AES 128/192/256 –for data encryption, RSA –for the distribution of secret keys), in addition, a lightweight protocol for secure data transmission Scplight was implemented as an alternative to OpenSSL, which improves transfer speed on low-power hardware platforms. The developed information protection module has undergone thorough testing on a real system. Thedevelopment of the information protection module is based on the need for a universal component that provides high-quality data protection in wireless communication systems. This module will accelerate the development of relatively affordable physical means of secure communication, a critical partofsuch projects. The module is implemented as a library written in the C language, which implements an API for establishing a secure connection and further forwarding information over an unprotected transmissionchannel. In addition, a configurator programallows you to change the module settings even in real-time when client applications use it. This ensures continuous, seamless, and secure data exchangeandconvenient configuration of the module. Many supporting libraries were used in the development process, including Crypton, Libgcrypt, Openssl, Ncurses and Sqlite3.
Portfolio Composition and Home Ownership Importance for the Wealth Distribution in Europe
Authors: Bielskis Karolis
Published: December 2023

The paper analyzes household portfolio dynamics in Europe, focusing on the period from 2010 to 2017 using data from the European Central Bank’s Household Finance and Consumption Survey (HFCS). The study examines the evolution of household portfolios after the 2008 financial crisis, with housing assets found to be one of the key drivers. On the aggregate level, the household portfolio remained stable between 2010 and 2017. Housing importance remained crucial during all the time and drove the majority of portfolio performance for households in 40–99 percentiles of the wealth distribution. With the evolution of household portfolios, age cohorts 45–54, 65 and older strengthen their positions by increasing the share of their owned assets in comparison to other age cohorts, which lost part of their shares. I conclude the paper with some stylized facts showing the relationship between home ownership, the share of portfolio in housing assets and wealth inequality between countries. The stylized facts provide evidence that household portfolios significantly concentrated in housing assets during the analyzed decade. Furthermore, the transition of households from renters to home owners contributed significantly to the changes in wealth inequality that occurred after the 2008 financial crisis.
Evaluation of radiation damage exposure for low alloy steel in J-9 irradiation channel of Argonauta reactor
Authors: Ogihara Jonnathan , Benevides Ribeiro da Silva Pedro , Araújo Moreira Fernando Manuel
Published: December 2023

The operation of nuclear facilities must satisfy the nuclear safety requirements. An analysis of the components of these facilities focuses on the structural materials. In this scenario, several types of alloys are employed in their construction. The nuclear fuel burn-up will result in damage caused by ionizing radiation. Due to continuous operation, radiation damage will build up and may result in the manifestation of macroscopic radiation effects. Such effects may change the mechanical, physical and chemical properties of structural alloys. Thus, it is verified the importance of the material behavior predictability to avoid reduction in performance or failure in these types of facilities. In order to study these effects, it’s necessary to calculate the displacement per atom (dpa) in the material. This calculation was estimated for the reactor Argonauta’s irradiation channel J-9 for low alloy steel. An ideal situation with a harder neutron spectrum was calculated to analyze the results. The dpa rate calculated in that facility was attributed to the low neutron energy fluence.
Free wrestling: a series of morphological index values and anatomical and anthropometric indicators in young female athletes involved in freestyle wrestling
Authors: Bugaevsky Konstantin Anatolyevich
Published: December 2023

In this research article, the author presents the results and their analysis, directly related to some anatomical and anthropometric indicators and some morpho-functional indices in a group of young female athletes, puberty and youth, engaged in free wrestling. The results obtained and their analysis may have applied practical significance in the preparation and medical supervision of other athletes of this age group.
Improving Children's Interpersonal Intelligence by Adding Quality Time Intensity
Authors: Shodiq Sadam Fajar
Published: December 2023

AbstractThe primary objective of this paper is to investigate the correlation between the intensity of quality time and the level of interpersonal intelligence among students at SMA Muhammadiyah 5 Yogyakarta. The study employed a quantitative research methodology, with a sample size of 68 students selected from a larger population of 215 students. This study assessed the degree of family quality time and the level of interpersonal intelligence among students through the administration of a questionnaire to the participants. The findings indicated that the level of family quality time intensity among the participants was moderate, with a percentage of 63.2%. In the interim, it is seen that pupils exhibit a notable level of interpersonal intelligence, amounting to 79.4%. The results of this study suggest that while the degree of family quality time remains moderate, students at SMA Muhammadiyah 5 Yogyakarta exhibit a significant level of interpersonal intelligence. However, it is imperative to address the issue of intensifying family quality time in order to promote social contact and bolster emotional bonds among family members. This, in turn, has the potential to further augment the development of kids' interpersonal intelligence.AbstrakArtikel ini bertujuan untuk menyelidiki hubungan antara intensitas waktu berkualitas dan tingkat kecerdasan interpersonal di antara siswa di SMA Muhammadiyah 5 Yogyakarta. Penelitian ini menggunakan metodologi penelitian kuantitatif, dengan ukuran sampel sebanyak 68 siswa yang dipilih dari populasi yang lebih besar sebanyak 215 siswa. Penelitian ini menilai tingkat waktu berkualitas keluarga dan tingkat kecerdasan interpersonal siswa melalui pemberian kuesioner kepada partisipan. Temuan menunjukkan bahwa tingkat intensitas waktu berkualitas keluarga di antara partisipan adalah sedang, dengan persentase sebesar 63,2%. Sementara itu, terlihat bahwa para siswa menunjukkan tingkat kecerdasan interpersonal yang mencolok, mencapai 79,4%. Hasil penelitian ini menyarankan bahwa sementara tingkat waktu berkualitas keluarga tetap sedang, siswa di SMA Muhammadiyah 5 Yogyakarta menunjukkan tingkat kecerdasan interpersonal yang signifikan. Namun, sangat penting untuk mengatasi masalah intensitas waktu berkualitas keluarga guna meningkatkan kontak sosial dan memperkuat ikatan emosional antara anggota keluarga. Hal ini, pada gilirannya, berpotensi untuk lebih meningkatkan perkembangan kecerdasan interpersonal anak-anak.How to Cite: Shodiq, S.F. (2023). Improving Children's Interpersonal Intelligence by Adding Quality Time Intensity. TARBIYA: Journal of Education in Muslim Society, 10(1), 1-12. doi:10.15408/tjems.v10i1.29000.
Portrait of Adequacy of Teachers in DKI Jakarta Public Madrasah
Authors: Fatra Maifalinda , Sihombing Adison Adrianus
Published: December 2023

AbstractThis study aims to analyze the availability of professional teachers in public madrasahs using a descriptive analysis survey method. Respondents were 1116 state madrasah teachers (MIN, MTsN, and MAN) in DKI Jakarta. Teacher profile data obtained from Simpatika. Teacher competency data was obtained through a questionnaire in the Google form in 2021. The results showed that there was a quite significant shortage of educators in MIN of Arabic 46%; Art 45%; and Sports 53%. The class teacher has an excess of 17%. For MTsN and MAN, there are significant deficiencies in the subjects of PKN, Indonesian, Cultural Arts, Sports, and Craft-Entrepreneurship. This study recommends that the Central Ministry of Religion recruit civil servant teachers in all subjects that experience shortages. This study has implications for the management of teacher governance in madrasas, it is necessary to pay attention to the adequacy of teachers for each eye. For the Ministry of Religion as a policy maker to pay serious attention to meeting the needs of teachers in every madrasah. For higher education institutions, it is necessary to open several departments which are currently quite limited in the availability of teachers such as teachers of arts, sports, and counseling guidance.AbstrakStudi ini bertujuan untuk menganalisis ketersediaan guru profesional di madrasah negeri dengan menggunakan metode survei teknik analisis deskriptif. Responden merupakan 1116 guru madrasah negeri (MIN, MTsN dan MAN) di DKI Jakarta. Data profil guru diperoleh dari Simpatika. Data kompetensi guru diperoleh melalui angket dalam google form tahun 2021. Hasil penelitian menunjukkan terdapat kekurangan tenaga pendidik yang cukup signifikan di MIN sebesar: Bahasa Arab 46%; Seni 45%; dan Olahraga 53% sedang untuk guru kelas mengalami kelebihan sebesar 17%. Untuk satuan pendidikan MTsN dan MAN terdapat kekurangan guru yang cukup signifikan pada mata pelajaran PKN, Bahasa Indonesia, Seni Budaya, Olahraga dan Prakarya-Kewirausahaan. Studi ini merekomendasikan agar Kementerian Agama Pusat melakukan penerimaan guru PNS pada semua mata pelajaran yang mengalami kekurangan. Studi ini berimplikasi terhadap manajemen tata kelola guru di madrasah perlu memperhatikan ketercukupan guru untuk setiap mata. Untuk kementrian agama sebagai pembuat kebijakan agar memberi perhatian serius terhadap pemenuhan kebutuhan guru disetiap madrasah.  Untuk lembaga pendidikan tinggi perlu membuka beberapa jurusan yang saat ini cukup terbatas ketersediaan guru seperti guru seni, olah raga dan bimbingan konseling.How to Cite: Fatra, M., Sihombing, A.A. (2023). Portrait of Adequacy of Teachers in DKI Jakarta Public Madrasah. TARBIYA: Journal of Education in Muslim Society, 10(1), 13-38.
THE INFLUENCE OF MOBILE BANKING SERVICE QUALITY ON CUSTOMER SATISFACTION OF INDONESIAN SHARIA BANK (CASE STUDY: ASN UIN IMAM BONJOL PADANG)
Authors: SARI AMNAH , AFRIDA YENTI , MARDIAH NILA
Published: December 2023

This research is a type of quantitative research that aims to determine the effect of the quality of mobile banking Bank Syariah Indonesia on customer satisfaction. The data used in this study is primary data obtained directly from the answers of 88 respondents who are ASN UIN Imam Bonjol Padang as customers of mobile banking BSI The analytical method used is a simple linear regression analysis method. Based on the results of the study, it is known that the variable quality of mobile banking has an influence on customer satisfaction from the results of hypothesis testing or t-test, a significance value of 0.000 < than 0.05. From the simple linear regression equation, the X regression coefficient is 0.518 which states that if the quality of mobile banking services (X) increases by one unit, then customer satisfaction (Y) will increase by 0.518 or 51.8%. In the R-Square coefficient of determination the effect of mobile banking (X) on customer satisfaction (Y) is 0.713=71.3% and the remaining 28.7% is influenced by factors other than service quality that are not included in this study.
Technology of applying a multifunctional homogenizer assembly for carbamide-ammonium mixture preparation
Authors: Vorozhka Anatoly , Tiahno Olexandr , Ovcharenko Mykhailo , Loburenko Mikhailo , Papchenco Andrey
Published: December 2023

This paper considers the technological process of preparing carbamide-ammonium mixture using a multifunctional homogenizer assembly. The study object is the work process in the flow part of the multifunctional homogenizer assembly. Carbamide-ammonium mixture is used to feed plants with nitrogen, which is one of the main macro elements necessary for their growth and development. Nitrogen contributes to the formation of proteins, enzymes, and other important organic compounds, which are necessary for healthy plant growth and crop formation. Production of carbamide-ammonium mixture includes several stages, such as mechanical, hydromechanical, thermal, mass exchange, and chemical processes. To optimize these processes, a multifunctional homogenizer assembly of the rotary-dynamic principle of action was designed, which is capable of simultaneously performing all stages of carbamide-ammonium mixture preparation. A test bench was constructed to study the process of preparing carbamide-ammonium mixture and the sample was analyzed for nutrient content. The designed unit is capable of preparing about 30 liters of ready-made KAS-32 mixture in 10 minutes. The energy indicators obtained as a result of parametric tests are: head H=22.1 m, power N=27 kW, with productivity Q=5 m3/h. The use of such technology makes it possible to implement the principles of precision agriculture under the conditions of small-scale production, thereby increasing the efficiency of land cultivation. There is also the possibility of using equipment of this type for other needs, for example, for the preparation of liquid complex fertilizers and growth stimulants based on humates. Further development based on this assembly includes the construction of an automatic component supply line and the formation of a closed production cycle system
Testing a new technique for producing artillery cartridge cases from pipe workpiece by roughing with a friction tool
Authors: Markov Oleg , Shevtsov Serhii , Hrudkina Natalia , Molodetskyi Vitalii , Musorin Anton , Zinskyi Volodymyr
Published: December 2023

The object of this study is the technological process of manufacturing parts such as artillery shells using pressure treatment methods. The work is aimed at solving the current scientific and technical task to improve the technological processes for manufacturing parts such as cartridge cases based on the use of a tangential rolling operation with a friction tool, which ensures the production of hollow products with a bottom. Using the finite element method, modeling of the bottom rolling processes was carried out, which made it possible to establish the effective geometry of the processed workpieces and their heating temperature. Recommendations have been devised for the design of new technological processes for roughing bottoms, which consist of determining the wall thickness of the workpiece before deformation, the heating temperature of the workpieces, and the amount of supply of the workpiece to the friction tool. The resulting recommendations were verified by experimental studies. Roughing of spherical bottoms should be carried out for pipes with a relative wall thickness (D/s) in the range of 15...20, the homologous heating temperature should be 0.8, and the relative feed of the workpiece into the friction tool should be 0.9. Testing the established relationships under laboratory conditions confirmed the recommendations for changing the shape of spherical bottoms during the roughing process. The results of metallographic studies on full-scale products confirm the results of the theoretical study. It is recommended to use this technique for products that have an axial hole (artillery shells, hydraulic cylinders, etc.), which will allow removing axial defects in the bottom after drilling the axial hole. The results could be used at machine-building enterprises in the manufacture of dual-use parts
Identification of the regularities of the thermohydraulic processes of the cooling system of an experimental device based on a mathematical model
Authors: Sakhanova Zhaina , Rakhmetullina Zhenisgul , Mukasheva Roza , Mukhamedova Raushan , Uvaliyeva Indira , Vityuk Galina
Published: December 2023

The article is devoted to the study of a nitrogen supply system for cooling an experimental device designed for testing in a pulsed reactor with a graphite moderator. To analyze emergency situations caused by disruption of the nitrogen supply system in the cooling paths of the fuel assembly cover and the experimental device power housing, a mathematical model has been developed to describe thermodynamic processes in a system of interconnected tanks that simulate individual sections of the experimental device hydrodynamic cooling system in a pulsed graphite reactor and implemented in the mathematical interactive package for engineering calculations in MATLAB/Simulink. To study the normal operation of the system and analyze possible emergencies, the cooling system of the experimental device was presented in the form of groups of interconnected sections of the hydrodynamic system-tanks, with specified volumes and hydraulic resistances of pipelines connecting these tanks. Verification of the model, calculations of the experimental device cooling system normal operation mode, calculations of emergency situations caused by a violation of the nitrogen supply system normal operation in the cooling paths of the fuel assembly cover were carried out, in particular, it was found that for the cooling system of the experimental device WF-2, the breakdown of the gearbox P-12 can cause depressurization of the fuel assembly cover and an increase in pressure in the power housing, the opening of the safety valve prevents exceeding the pressure limit in the housing, the device maintains integrity even in emergency situations, without being subjected to destruction of the power elements of the structure at a pressure of up to 8 MPa
Modification of chaotic interleaver for turbo codes with a change to the duffing equation and accounting for the distance spectrum of the code
Authors: Topalov Vladislav , Tregubova Iryna , Severyn Mykola , Hurklis Iryna
Published: December 2023

Various types of interleavers in turbo codes and their parameters affecting the efficiency of turbo codes are considered. It is noted that the type of interleaver directly affects the efficiency and error correcting of turbo codes. Also, the efficiency of turbo codes is influenced by the parameters of the minimum distance, the length of interleaver, and the distance spectrum of the code.
A modification of the chaotic interleaver of turbo codes is proposed with the change of the equation to the Duffing and with examining the code's distance spectrum with the condition of increasing the code's distance between the code words with a small weight. The algorithm for modifying the chaotic interleaver with the Duffing equation and with examining the code's distance spectrum of turbo codes is presented. The characteristics of the modified chaotic interleaver with the Duffing equation and with examining the code's distance spectrum of turbo codes according to various parameters of turbo codes are given. This modification of the interleaver of turbo codes increased the minimum distance between elements for different lengths of the interleaver and polynomials of the turbo code by 10 % …33 %. Given this, there was an increase in the energy efficiency of the turbo codes by 0,05, …, 0,25 dB in comparison with a chaotic interleaver without modification at the same value of the bit error probability. When increasing the length of the modified chaotic interleaver with the Duffing equation and applying distance spectrum of the code the increasing the energy efficiency of the turbo code slows down compared to the chaotic interleaver without modification.
The application scope of the modified chaotic interleaving with the Duffing equation and with examining the code's distance spectrum of turbo codes is the infocommunication channels for mobile, wired, and satellite communications
Evaluating the impact of dispersed particles in the water of a power plant recirculating cooling system on the discharge of suspended solids into a natural water body
Authors: Kuznietsov Pavlo , Biedunkova Olha
Published: December 2023

The object of this study is the processes of formation and changes of dispersed particles in fresh, make-up, cooling, and return water in open recirculating cooling systems (RCS) with an assessment of the influence of suspended substances in discharge waters on the aquatic ecosystem. The study was carried out on the example of the Rivne Nuclear Power Plant (RNPP) and the Styr River. Dispersed particles (DPs) pose technological obstacles in the RCS of power plants, and their content in discharge waters determines the ecological quality of water bodies. This paper describes the results of studying the formation and changes of DP in raw, make-up, cooling, and return waters of RNPP RCS with an assessment of the impact of suspended substances in discharge waters on the aquatic ecosystem of the Styr River. It was found that the formed dispersed particles after water treatment by liming contain DP consisting of calcium carbonate and have a size of 10–30 μm. As a result of agglomeration of DP in RCS, they aggregate to 120–150 μm, and due to low sedimentation resistance (sedimentation time 0.97 h), they settle in RCS. As a result of the deposition of DP in RCS, their significant decrease in return water (min–max=7.31–16.12 mg/dm3) is observed, despite the increase in their content in make-up water after water treatment (min–max=10.22–49.46 mg/dm3). According to the ecological classification, according to the content of suspended substances, the water of the Styr River in the zone of influence of RNPP discharges belongs to the II class, category 2, which characterizes the quality of the water as "very good" in terms of its state, and "clean" in terms of its degree of purity. It was concluded that the content of suspended solids does not exceed the established maximum permissible concentration (25 mg/dm3), the increase in the concentration of suspended solids does not exceed the established ecological standard of 0.25 mg/dm3 and does not have a negative impact on surface water. The results of the research could be used for other power plants equipped with an open RCS
Determining the energy of impact of a railroad rolling stock wheelset when derailing over reinforced concrete sleepers using impact trace parameters
Authors: Bolzhelarskyi Yaroslav , Bal Olena , Luchko Josyp , Kovalchuk Vitalii
Published: December 2023

The object of research is reinforced concrete sleepers that are subjected to the impact of a wheel in a railroad rolling stock.
A procedure is given to theoretically estimate the energy at the impact of a wheel into a reinforced concrete sleeper when a rolling stock wheelset derails.
Experimental studies of the geometric parameters of impact traces that occur on reinforced concrete sleepers, depending on the height of the center of mass of the striker above the impact site, were conducted. Based on the results of the experiments, the average geometric parameters of the impact traces were obtained. It was established that the dependence of impact traces on the height of the center of mass of the striker above the place of impact into the reinforced concrete sleeper has a non-linear distribution.
Experimental studies of the effect of the location of the reinforced concrete sleeper base on the geometric parameters of impact traces were conducted. It was established that the location of the reinforced concrete sleeper on a solid base and on crushed stone ballast does not exert a significant effect on change in the geometric parameters of impact traces. The obtained experimental values are within the limits of 3σ determined for the rigid abutment of the sleeper.
It was established that when testing a reinforced concrete sleeper in a crushed stone box, the amount of energy depends on the height of the striker. At a height of 0.95 m, the amount of energy absorbed by the sleeper together with the ballast was 475 J, and at a height of 1.42 m – 710 J.
Analytical dependences were obtained between the length of the face of the impact trace and the amount of absorbed energy, as well as the depth along the direction of the force and the amount of absorbed energy. It was established that the length of the impact trace has an extremum, which does not allow recommending this parameter for estimating the amount of absorbed energy for energy values E<200 J. To determine the amount of energy absorbed by the sleeper, it is recommended to use the parameter of the depth of the impact trace
Immunopathological response of the body in patients with chemosensitive and drug-resistant pulmonary tuberculosis
Authors: Sakhelashvili Manana , Platonova Iryna , Lapovets Lyubov , Zubchenko Svitlana
Published: December 2023

Immunological methods are important for diagnosing tuberculosis, evaluating the process activity, and forecasting the course of the disease and recovery.
Materials and methods. 47 patients with first diagnosed destructive sputum smear-positive pulmonary tuberculosis underwent a complex immunoassay. The patients were divided into two groups based on the sensitivity/resistance of mycobacterium tuberculosis to antimycobacterial agents. The first group consisted of 22 patients with first-diagnosed chemosensitive tuberculosis with preserved sensitivity to antimycobacterial agents. The second group consisted of 25 patients with multi-drug resistant tuberculosis pulmonary tuberculosis (MDR-TBP). The research was conducted during the 2018-2021 years.
Results Specific cell response disorders in patients with pulmonary tuberculosis are associated with the multi-structural T-cell protection misbalance caused by the quantitative changes of its components, the increase/decrease in the quantity of certain lymphocyte pools specifying the immune response vector.
In cases of tuberculosis, phagocytosis plays an important role. Phagocytosis might release cells from the tuberculosis pathogen. To achieve this, the activation of cells should reach a certain level. However, the initial protective nature of cell activation might become aggressive.
The T-cell immunity disorders were more evident in patients with MDR-TBP versus donors and patients with chemosensitive tuberculosis. The apparent decrease in СD3+СD56+, СD3+СD4+ pools and the increase in СD3+СD8+ were revealed in cases of MDR-TBP tuberculosis versus chemosensitive tuberculosis. The difference in СD3+СD4+, СD3+СD8+, СD3+СD4+/СD3+СD8+, CD3+СD8+HLA-DR+, СD16/56+8+ between the study and observational groups was statistically confirmed. The evident specific cell immunity disorders in patients with MDR-TBP aggravate the clinical course of the disease, causing destructive changes and acute and extensive processes.
Conclusions Changes in different components of the immune system might occur during pulmonary tuberculosis (in T- and B-cells, phagocytic cells), specific and enzymatic processes are activated, and autoimmunization is evident. The intensity of the changes varies at different stages of the disease. Most immune disorders caused by the specific inflammation process require immune correction.
Comparative Evaluation of the ETDRS Visual Acuity Chart and Arclight Cloth Chart (ARCchart) for Primary Eye Care in Resource-Limited Settings
Authors: Jaffray Christine , Strang Niall , Kousha Obaid , Galloway Gavin , Sweeney Laura , Blaikie Andrew
Published: December 2023

This study compared the Arclight Cloth Chart (ARCchart) to the gold standard ETDRS chart for visual acuity (VA) measurement in 63 participants. Despite its potential limitations as a tool to measure subtle changes in VA over time, the ARCchart showed a limit of agreement between -0.23logMAR and 0.26logMAR with ETDRS values. It demonstrated 93% (95% Confidence Interval 86% to 100%) sensitivity and 90% (84% to 97%) specificity when used to screen for vision worse than 0.20logMAR. This low-cost, portable cloth VA chart is a valuable alternative for measuring VA and screening for low vision in resource poor settings.
APPROXIMATION OF DIFFERENTIATION OPERATORS BY BOUNDED LINEAR OPERATORS IN LEBESGUE SPACES ON THE AXIS AND RELATED PROBLEMS IN THE SPACES OF \((p,q)\)-MULTIPLIERS AND THEIR PREDUAL SPACES
Authors: Arestov Vitalii V.
Published: December 2023

We consider a variant \(E_{n,k}(N;r,r;p,p)\) of the four-parameter Stechkin  problem \(E_{n,k}(N;r,s;p,q)\) on the best approximation of differentiation operators of order \(k\) on the class of \(n\) times differentiable functions \((0<k<n)\) in Lebesgue spaces on the real axis. We discuss the state of research in this problem and related problems in the spaces of multipliers of Lebesgue spaces and their predual spaces. We give two-sided estimates for \(E_{n,k}(N;r,r;p,p)\). The paper is based on the author's talk at the S.B. Stechkin's International Workshop-Conference on Function Theory (Kyshtym, Chelyabinsk region, August 1–10, 2023).
CANONICAL APPROXIMATIONS IN IMPULSE STABILIZATION FOR A SYSTEM WITH AFTEREFFECT
Authors: Dolgii Yuri F.
Published: December 2023

For optimal stabilization of an autonomous linear system of differential equations with aftereffect and impulse controls, the formulation of the problem in the functional state space is used. For a system with aftereffect, approximating systems of ordinary differential equations proposed by S.N. Shimanov and J. Hale are used. A method for constructing approximations for optimal stabilizing control of an autonomous linear system with aftereffect and impulse controls is proposed. Matrix Riccati equations are used to find approximating controls.
CONTROL PROBLEM FOR A PARABOLIC SYSTEM WITH UNCERTAINTIES AND A NON-CONVEX GOAL
Authors: Izmest’ev Igor’ V. , Ukhobotov Viktor I.
Published: December 2023

We consider the control problem for a parabolic system that describes the heating of a given number of rods. Control is carried out through heat sources that are located at the ends of the rods (only at one end or at both). The density functions of the internal heat sources and exact values of the temperature at the right ends of some rods are unknown, and only the segments of their change are given. The goal of choosing control is to ensure that at a fixed time moment the weighted sum of the average temperatures of the rods belongs to a non-convex terminal set for any admissible unknown functions. After a change of variables, this problem reduces to a one-dimensional differential game. Necessary and sufficient conditions for the game termination are found.
CONVEXITY OF REACHABLE SETS OF QUASILINEAR SYSTEMS
Authors: Osipov Ivan
Published: December 2023

This paper investigates convexity of reachable sets for quasilinear systems under integral quadratic constraints. Drawing inspiration from B.T. Polyak's work on small Hilbert ball image under nonlinear mappings, the study extends the analysis to scenarios where a small nonlinearity exists on the system's right-hand side. At zero value of a small parameter, the quasilinear system turns into a linear system and its reachable set is convex.  The investigation reveals that to maintain convexity of reachable sets of these systems, the nonlinear mapping's derivative must be Lipschitz continuous. The proof methodology follows a Polyak's scheme. The paper's structure encompasses problem formulation, exploration of parameter linear mapping and image transformation, application to quasilinear control systems, and concludes with illustrative examples.
Suspension of construction works in the light of the provisions of the Act on the protection of monuments and the care of monuments
Authors: Kiedrzynek Michał
Published: December 2023

The protection of monuments and broadly understood cultural heritage is one of the important tasks that the Constitution of the Republic of Poland places on its authorities. In order to implement this constitutional task, the Act on the protection of monuments and the care of monuments provides for special powers for public administration bodies to suspend construction works that apply to both monuments and objects that can potentially become such monuments. When drafting regulations in this area, the legislator did not avoid a few mistakes and was imprecise in several places, which may result in significant practical problems.
Outbreak conditions of Sunn pest, Eurygaster maura L., 1758 (Hemiptera: Scutelleridae): Model of Central Anatolia (Türkiye)
Authors: Babaroğlu Numan Ertuğrul , Akci Emre , Çulcu Mehmet
Published: December 2023

In this study, outbreak conditions of Sunn pest, Eurygaster maura L., 1758 (Hemiptera: Scutelleridae), the main agricultural pest of wheat, Triticum aestivum L., 1753 (Poaceae: Poales) which is the most important crop of the Central Anatolia (Türkiye) in terms of cultivation area and production was investigated. For this purpose, population density of adult sunn pests in its overwintering site and wheat cultivation area were evaluated for Central Anatolian provinces for the years between 1988 and 2021. It is observed that population density of sunn pest reached the level that requires control in 1988 for the first time. After, there were three infestation periods up to 2021 and each of them lasted for 4 years. First of them occurred between 1993 and 1996. It is observed that when average density of overwintered adult sunn pests exceeds 30 per square meter, there can be infestation in all overwintering sites of Central Anatolia. Also, there is a correlation between this density and the intensity of the infestation. Throughout the infestation periods, average temperature was determined as 20 ºC during the reproduction and development period, and it was recorded over 19 ºC during the season when temperature changes and relocations were high in overwintering site.