bluuebunny/crossref_metadata_2025 huggingface dataset:
Criminological Risks of Sexual Deviations on the Internet
Authors:   Belgorod Law Institute of the Ministry of Internal Affairs of Russia named after I.D. Putilin, Sarychev Alexander , Arkhiptsev Ivan ,   Belgorod Law Institute of the Ministry of Internal Affairs of Russia named after I.D. Putilin, Komardina Anastasia ,   Belgorod Law Institute of the Ministry of Internal Affairs of Russia named after I.D. Putilin
Published: December 2023

Introduction. In the modern world, the public’s understanding of sexual hobbies, sexual freedom, and erotic preferences is undergoing significant changes caused by the influence of telecommunications systems, the modernization of moral values, and a change in moral guidelines. Tolerance to sexual deviations has a negative impact on the normal physical, mental, spiritual, and moral development of citizens and deforms the consciousness of minors, which can have an extremely negative impact on their further social adaptation in society. The purpose of the research is to study the complex criminological characteristics of the sexual services provided, the systematization and typologization of the modern sex industry as a social phenomenon and its criminological consequences, the obtaining of new knowledge about this phenomenon, and the development of general social proposals for the prevention of sexual deviations among young people that meet modern political, ideological, legal, and socio-economic conditions of modernity. Research methods: a special formal-logical method is used to collect, process, generalize, analyze, and interpret empirical material; the general scientific methods such as comparison and description; the general logical methods: analysis, synthesis, induction, deduction, etc. As a result of the study, a broad description of the types of sexual services provided quid pro quo is presented, the threats of widespread and uncontrolled consumption of sexual services are identified, the authors’ classification of activities aimed at satisfying sexual needs is proposed, as well as the measures to prevent sexual deviant services provided quid pro quo.
Assessment of Digitalization Impact on Environmental Sustainability of Old Industrial Regions of Southern Federal District
Authors:   Southern Federal University, Chernova Olga , Mitrofanova Inna ,   Federal Research Centre the Southern Scientific Centre of the Russian Academy of Sciences
Published: December 2023

It is generally accepted that digitalization has a positive effect on “green development”, accelerating the introduction of energy and resource-saving technologies. For the economy of old industrial regions of Southern Russia, whose industrial companies cause significant damage to the environment, increasing environmental sustainability is especially important. The purpose of this article is to find the answer to the question of whether the ongoing processes of digital transformations in Volgograd and Rostov regions affect their environmental sustainability. In this article, the environmental sustainability of the region in the context of digitalization means regional development, based on the construction of such relationships between the social and economic system of the region and the natural environment that will not lead to its deterioration. When studying the environmental sustainability of the region, the following indicators are analyzed: emissions of pollutants from stationary sources into the air; discharge of polluted wastewater into surface water bodies. To analyze digital transformations in the region, the indicators characterizing the share of entities in the region using various types of digital technologies are taken. The study covers the period from 2010 to 2021. As a result of the study, a lack of connection between the indicators of digitalization and indicators of environmental sustainability in the regions under consideration was revealed. Based on the strategic and policy documents analysis for the Volgograd and Rostov regions’ digital development, it was concluded that the main reasons for the communication lack are insufficient attention of regional authorities to the possibilities of digital technologies’ use to solve the problems of environmental sustainability growth, which leads to the degradation of the territorial natural capital.
Digitalization as a Tool of Global Partnership: Shocks and Transformations of the Russian IT-Sphere
Authors:   V.A. Trapeznikov Institute of Control Sciences of the Russian Academy of Sciences, Roslyakova Natalia
Published: December 2023

An example of the destructive influence of dependence on partners can be called the situation in the information and telecommunications (IT) sphere of Russia. Despite the aggravation of relations, the market share of some software and hardware components reached 100% of Russian market. Accordingly, with the beginning of the acute phase of station pressure, when Western partners began to leave the Russian market, the IT sphere turned out to be seriously destabilized. Equipment prices increased, many software developers were left without strategic partners and investments, customers without digital products. IT development budgets were urgently adjusted for the purchase of hardware. Moreover, an attempt was made to “capture” Russian personnel who were employed in Western IT companies. It is obvious that such a level of global openness for the IT sphere, which provides a number of basic needs for the population and business, as well as the authorities, is a threat to national security. The growth of self-sufficiency in all areas of the IT sphere will contribute to the sustainability of both the sphere itself and the whole country and will avoid the need for such emergency measures as it were required in 2022. IT is just an example and increasing self-sufficiency is relevant for the industry of mechanical engineering and tools, the production of components, energy and transport infrastructure and a number of other sectors of the Russian economy. The article examines the role of the state in the crisis management and strategic planning of the development of the IT sphere to ensure stability and security of work in the future.
Spatial Regulation of Development of Old Industrial Territories: Theoretical Aspect
Authors:   Institute of Economics of the Russian Academy of Sciences, Sorokina Natalia
Published: December 2023

Achievement of the effectiveness of programs and activities of the state regional policy in relation to various types of regions requires constant development of its methodological basis in order to take into account the most relevant achievements of domestic and foreign scientific thought. The purpose of the article is to summarize the theoretical foundations of spatial regulation and regional development of regional policy in relation to old industrial territories, taking into account the features and problems of their functioning and development. It is shown that foreign and domestic scientists associate the phenomenon of old industry with the achievement of the limit of growth of the regional economy. The theoretical basis of modern regional policy is the theories of spatial economics, first of all, the theory of poles (centers) of growth. The evolutionary approach to solving the problems of old industrial regions is widely used in the practice of public administration. At the turn of the 20th – 21st centuries, the conceptual provisions of the theory of the creative class and the concept of the “learning region” began to be used in the establishment of state programs to support old industrial territories. The study of theoretical approaches to the problems of spatial regulation and regional development showed that regional social and economic policy, coordinated with the macroeconomic policy of the state, is a necessary condition for the resolution of territorial contradictions in the development of the national economy, while the policy of regional authorities is considered as a key factor in ensuring sustainable social and economic development of old industrial territories. Specific threats to the old industrial regions’ sustainable socio-economic development require special support, as well as the reflection of the priorities of state support for old industrial territories in the key document of spatial strategizing. It is the Spatial Development Strategy of the Russian Federation.
Cluster Analysis on Supply Chain Management-Related Indicators
Authors: YILDIRIM Metin
Published: December 2023

The supply chain performance of countries has a significant impact on the overall performance of countries. These indices primarily emphasized countries' standings, rankings, and improvement areas. Clustering countries based on a single index does not always yield the desired results. Using cluster analysis may help get critical information when many indicators are evaluated. The supply chain-connected indicators were chosen to be included in the research initially. In this study, three global indices were selected. We chose the Logistics Performance Index(LPI) to evaluate the logistics industry, which is essential in supply chain management. Logistics is one of the critical areas that affect and have also been affected by many fundamental indicators used to evaluate a country's performance. One critical indicator that globally measures the processes is the Logistics Performance Index. We included Environmental Performance Index(EPI) in the study to evaluate environmental policies that impact supply chain operations. The final index used in the study is the Global Competitiveness Index(GCI), which examines the competitiveness of countries with a heavy dependence on supply chain management performance. It is one of the crucial indications in evaluating a country's productivity. We used clustering analysis based on supply chain management-related indicators in the following phase. K-Means clustering algorithm was applied to the extracted data set. Python code is written to implement the K-Means clustering algorithm. In the final part of the study, differences between clusters and submitted research proposals ideas were discussed. This research proposes a three-step methodological framework for mining supply chain indicators derived from the LPI, GCI, and EPI indicators. The research aims to conclude from the analyses of the change in centers based on indicators, the variation based on datasets between clusters, and the grouping of countries based on any combination of the LPI, GCI, and EPI indicators .
PLACE OF CONCEPTS “LEGAL FORCE”, “EFFECT IN TIME”, “APPLICATION” OF LEGAL NORMS IN THE CATEGORY FRAMEWORK OF VARIOUS BRANCHES OF LAW
Authors:   Perm State University, Kuznetsova O. A. ,   Perm Institute of the Federal Penal Service of Russia
Published: December 2023

Abstract: one of the important guarantees of effective exercising of rights and duties is the implementation of clear rules defining the issues associated with the legal norms legal force, time-related effect and application. At the same time, the current legislation contains a rather complicated system of temporal principles. One of the topical scientific, legislative and law enforcement issues in this sphere is the correlation between the categories of the force, effect and application of law. The theory of law and various branches of law contain many approaches to solving this issue starting from complete identification and finishing with absolute distinction. The purpose of the article is to analyze the adopted doctrinal views on this side of the legal norms temporality and the relevant legislation. It is proved that these categories are not coincident. A regulatory legal act may have been terminated but have an ultra-active effect, and the acts recognized as invalid and suspended may be ineffective but remaining their legal force. The application of law is associated with the choice made by the law enforcement officer in case of contradiction between the legal norms in force and in effect regulating the same relations.
NEW REGULATORY TECHNOLOGIES AND OTHER HARBINGERS OF THE LAW OF THE FUTURE
Authors:   Perm State University, Aristov E. V.
Published: December 2023

Abstract: the high dynamics of social relations in its various transformations in the modern world leaves its imprint on the formation of law. At the same time, the legal norms adopted do not always reflect the emerging (new) social relations. In addition, artificial intelligence, which is developing and reflected in law, as well as other new technologies require forecasting in the development of law. The purpose of the article is to give an overview of some of these forecasts, to identify the role and importance of new regulatory technologies, taking into account the various impulses of the development of law given by the pandemic. It is proved that the aggravated problems in the regulatory environment, thanks to new technologies and COVID-19, make adjustments to the legal profession and require regulatory regulation.
DIGITAL VIDEO IMAGES IN FORENSIC IDENTIFICATION
Authors:   Perm State University, Dolginov S. D.
Published: December 2023

Abstract: the article discusses the modern possibilities and prospects for the development of technologies for automatic identification of a person by his video images. Some legal and technical aspects of the implementation of this technology are analyzed. Attention is drawn to the factors affecting the completeness and reliability of the display of human features captured on digital video images. An important place is occupied by the study of problems in extracting information from video recording tools, ways to eliminate them. The possibilities of using the information obtained from the means of video recording in the practice of disclosure and investigation of crimes are reflected. The practice of implementing hardware and software complexes in the Russian Federation and the Perm Region is investigated. The article describes the development of algorithms for machine image recognition that allow identification in automatic mode with a high level of accuracy and speed, searching through information arrays of digital photographs. The development of modern technologies makes it possible to use in practice an algorithm that allows recognizing not only a face, but also its emotional state, up to complex, composite emotions. This is of particular relevance in the prevention of terrorist acts.
DIGITAL FINANCIAL ASSETS THROUGH THE PRISM OF THE DOCTRINE OF UNDOCUMENTED SECURITIES
Authors:   Perm State University, Zakharkina A. V.
Published: December 2023

Abstract: digital reform puts on the agenda issues related to the legal regime of new digital phenomena – digital rights, including digital financial assets. Giving digital rights an independent legal status makes it necessary to differentiate the legal regime of digital financial assets and the legal regime of related objects of civil rights – non-documentary securities. The author focuses on the fact that the legal regime of digital financial assets is based on the legal regime of nondocumentary securities. The article makes general comments on the statuization of digital financial assets; identifies expert positions on the legal regimes of digital financial assets and non-documentary securities; examines doctrinal ideas about the relationship between the legal statuses of digital financial assets and non-documentary securities. As conclusions, the author made the following conclusions: a) the independent legal status of digital financial assets is mainly due to political motives; b) the general similarity of digital financial assets and nondocumentary securities is in the rights they certify; c) the differentiation of the phenomena being compared can be carried out on the basis of two criteria: 1) the presence/absence of an intermediary; 2) the architecture of the information system that makes up the infrastructure of the corresponding value.
ON THE TIMELINESS OF UNIFICATION OF THE CRIMINAL PROCEDURAL LEGISLATION OF THE RUSSIAN FEDERATION, REGULATING THE CONTROL AND VERIFICATION STAGES
Authors:   Perm State University, Borisevich G. Ya.
Published: December 2023

Abstract: differences between the forms of exercise of judicial power in Russia do not exclude, but rather suggest the convergence of civil (arbitration), administrative, criminal proceedings in the regulation of intersectoral institutions, in particular, such as appeal, cassation, supervisory proceedings. The exclusion of unreasonable discrepancies in the procedural regulation of similar (homogeneous) legal relations allows to increase the efficiency of justice, ensure timeliness correction of judicial errors, protect the rights and legitimate interests of the individual, strengthen the rule of law. The article analyzes some situations that confirm the tendency of significant lagging of the criminal procedural regulation of the control and verification stages from the effective, time‐tested norms and institutions operating in other types of legal proceedings. They are evaluated, and recommendations are also made for them concerning the unification (harmonization) of legislation, which regulates the review of court decisions by higher instances in the sphere of criminal proceedings.
Strategic Issues of Restaurant Business Development in Pandemic and Post-Pandemic Periods
Authors: Fedotov Andrey , Schepina Svetlana
Published: December 2023

Under new economic conditions caused by pandemic restrictions restaurant businesses have to radically change their development strategy and make serious changes regarding marketing and management policies. In the context of recent events, the article looks into studying and applying new concepts of business development in the field of public catering under self-isolation and quarantine measures, as well as in the post-pandemic period. The conceptual framework regarding marketing tools used in the restaurant business in particular and in the catering market in general was clarified. Thus, the following categories were defined: the restaurant market, strategy of restaurant business development, and transformation of restaurant maintenance during the coronavirus pandemic. By means of statistical and factor analysis methods, as well as quantitative and qualitative empirical indicators, the state of the restaurant business during the pandemic is assessed, and the reasons for the decline in the restaurant services market during the study period are established. Upon analyzing modern literature and statistical data, we proposed prospects for restoration and development of the restaurant industry using marketing strategies in the post-pandemic period. Some possible strategic measures and tactics for adjusting the restaurant business to the conditions of pandemic and post-pandemic periods are examined and analyzed.
CD8 Cell Density In Substantia Nigra And Cerebral Peduncle Image Analysis v1
Authors: Ramesh Nelvagal Hemanth , J Curless Toby , Jaunmuktane Zane
Published: December 2023

QuPath is a bioimage analysis software designed for digital pathology and whole slide image analysis. This protocol describes how to measure CD8 density in the substantia nigra and cerebral peduncle using haematoxylin and DAB-stained brain sections.
Ortaokul Öğrencilerinin Sosyal Duyarlılık ve Sivil Katılım Düzeylerinin İncelenmesi
Authors: AKAROĞLU Gülriz , ERSOY QUADİR Seher , KOÇ Sevda
Published: December 2023

Bu araştırmada, ortaokul öğrencilerinin sosyal duyarlılık ve sivil katılım düzeylerinin, çocuk gelişimi ve sosyal hizmet bağlamında incelenmesi amaçlanmıştır. Araştırmanın örneklemini, 2019 yılında İstanbul ilinin Küçükçekmece merkez ilçesinden ve Konya ilinin Karatay merkez ilçesinden küme örneklem yöntemi ile seçilen birer ortaokuldaki 7. ve 8. sınıf öğrencileri arasından tesadüfi örneklem yöntemi ile belirlenen 233 öğrenci oluşturmuştur. Bu çalışmanın yürütülmesinde “genel tarama modeli” kullanılmıştır. Verilerin elde edilmesinde ise sosyal duyarlılık ve sivil katılım ölçeklerinin yer aldığı anket tekniği uygulanmıştır. Öğrencilerinin sosyal duyarlılık ve sivil katılım düzeylerinin, demografik özellikleriyle ilişkili olup olmadığı, Pearson Korelasyon Katsayısı, t-Testi ve One Way ANOVA Testi ile hesaplanarak irdelenmiştir. Bu araştırmada, ortaokul öğrencilerinin sosyal duyarlılıklarının ve sivil katılımlarının düşük düzeyde olduğu tespit edilmiştir. Örneklem grubunun sosyal duyarlılık ve sivil katılım düzeyleri, demografik özelliklerinden yaşlarıyla, devam ettikleri okulla, sahip oldukları kardeş sayısıyla, annelerinin eğitim düzeyi ile, babalarının eğitim düzeyi ile, babalarının mesleği ile ve haftalık harçlık miktarları ile ilişkili bulunmuştur.
Antihyperlipidemic and Hepatoprotective Effect of Zingiber Cassumunar Rhizome Extract in High-Fat Diet-Induced Hyperlipidemic Rats: The Role of Antioxidant Activity
Authors: Mahfudh Nurkhasanah , Sulistyani Nanik , Sari Novita Sari , Sari Indah Puspita , Dedi Adrian , Othman Fezah , Zakaria Zainul Amiruddin
Published: December 2023

Hyperlipidemia and oxidative stress are major risk factors for the onset of cardiovascular diseases, and the oxidative stress caused by high level of lipids can cause liver damage. Zingiber cassumunar has been reported to contain a high antioxidant content that may provide therapeutic advantages. The present study was to evaluate the antihyperlipidemic and hepatoprotective effects of Z. cassumunar rhizome extract (ZCRE) in high-fat diet (HFD)-induced hyperlipidemicrats model and investigate the mechanism through its effect on the endogenous antioxidant enzymes. In this study, the rhizomes of Z. cassumunar was extracted using ethanol 96% (v/v) and evaporated to get the concentrated Z. cassumunar rhizome extract (ZCRE). Thin layer chromatography (TLC)-densitometry was performed to determine the curcumin content in the extract. High fat diet-induced hyperlipidemia model was used to evaluate the anti-hyperlipidemic and hepatoprotectiveactivities of ZCRE in rats. Male Wistar rats were randomly divided into five groups: normal control; High fat diet-induced hyperlipidemic rats (HFD); High Fat Diet and 100 mg/kgBW of ZCRE (HFD + 100 mg/kgBW); High Fat Diet and 200 mg/kgBW of ZCRE (HFD + 200 mg/kgBW); and High Fat Diet and 400 mg/kgBW of ZCRE (HFD + 400 mg/kgBW). The antihyperlipidemic and hepatoprotective potential of ZCRE were assessed through a series of analyses of body weight, blood biochemical parameters, which include total cholesterol (TC), triglycerides (TG), the serum glutamic-oxaloacetic transaminase (SGOT) and serum glutamic-pyruvic transaminase (SGPT). The antioxidant activity of catalase (CAT) and glutation peroxidase (GSH-Px) were assessed on the liver homogenate. Data of the study were presented as mean ± SD and analyzed by using one way analysis of variance (ANOVA) followed by Least Significant Difference (LSD) test for multiple comparisons. The TLC analysis showed that ZCRE contained a significant amount of Curcumin. In addition, the study has also shown that ZRCE was able to significantly lower the levels of total cholesterol, triglyceride, SGPT, and SGOT as compared to hyperlipidemic rats (p <0.05). Concomitantly, the activity of CAT and GSH-Px was found significantly increased (p <0.05) when compared to hyperlipidemic control, with the dose of 400 mg/kg BW being the most effective. This study showed the significant antihyperlipidemic and hepatoprotective effects of ZCRE in HFD-induced hyperlipidemic rats, which mechanism might possibly connect to the increased antioxidant enzyme activities.
Mechanisms of Gentamicin Resistance in Listeria Monocytogenes: A Mini Review
Authors: Ng Hien Fuh , Ng Jamie May Ling , Ngeow Yun Fong
Published: December 2023

Listeria monocytogenes is a Gram-positive foodborne pathogen capable of causing a foodborne infectionknown as listeriosis. There are two main types of listeriosis: a non-invasive gastroenteritis and an invasive infection which is often associated with a high mortality and hospitalization rate among susceptible individuals. Gentamicin, used as an adjunct therapy with ampicillin, remains the treatment of choice for the life-threatening invasive listeriosis. Nevertheless, there is little data on gentamicin resistance determinants in L. monocytogenes. Several well-controlled studies have reported that mechanisms of gentamicin resistance in this organism involve active efflux and genetic determinants that affect the uptake of the antibiotic through altered membrane potential. This mini review summarises current knowledge of genetic determinants of gentamicin resistance in L. monocytogenes, with the aim of contributing information that could facilitate the discovery of new therapeutic approaches to overcome, delay or avoid developments of drug resistance in this foodborne pathogen.
Human Mesenchymal Stem Cell Derived from Bone Marrow and Umbilical Cord Display Anti-Cancer Activity in Cancer Cell Lines in Vitro
Authors: Fakharuzi Noor Atiqah , Lim Moon Nian , Abdul Rahman Zuhairi , Mohd Yusof Nurul Ain Nasim , Esa Ezalia , Shaik Fakiruddin Kamal
Published: December 2023

The anti-tumour efficacy of engineered mesenchymal stem cell (MSCs) in cancers have been well documented by several reports. However, the impact of MSCs on the pathogenesis of solid cancers remains elusive. The study aims to elucidate the role of MSCs from bone marrow (BMMSCs) and umbilical cord (UCMSCs) on the proliferation, apoptosis and clonogenicity of cancer cell including H2170 (squamous cell carcinoma), LN18 (glioblastoma) and MCF7 (breast cancer) in vitro. Highest concentration of conditioned medium derived from the UCMSCs was significantly (p<0.001) effective to inhibit the proliferation of H2170 (25.8 ± 3.5%), LN18 (17.6 ± 6.5%) and MCF7 (33.2 ± 6.8%) as compared to 100% viability in basal. Both MSCs and its conditioned medium were able to significantly (p<0.001) induce apoptosis (early and late) to the H2170 and LN18 cells. However, for MCF7 cells, co-cultured with both MSCs had higher impact on the apoptosis as compared to their condition medium. Furthermore, conditioned medium from UCMSCs were able to significantly reduced the number of colonies in H2170 (609.5 ± 4.9) and LN18 (171.3 ± 12.6) as compared to control (H2170; 1196.3 ±12.8 and LN18; 253.3 ± 12.3), suggesting that these two cancer cells are sensitive to the MSCs. Notably, by co-culturing of all three cancer cell lines with the MSCs’ conditioned medium, we found that there was an increased expression of more than two-fold in BAX, BAD, and APAF1 genes showing the ability of MSCs’ conditioned medium to induce the intrinsic apoptosis pathway in the cancer cells. Collectively, our findings demonstrated that the MSCs could induce apoptosis and inhibit both H2170 and LN18 cancer cell proliferation. Furthermore, this study did not find evidence of MSCs in enhancing tumorigenic characteristics of these cancer cells, and thus we postulate that MSCs are basically safe as a cell-based therapy in cancer treatment.
Statistical Methods for Finding Outliers in Multivariate Data Using a Boxplot and Multiple Linear Regression
Authors: Thanwiset Theeraphat , Srisodaphol Wuttichai
Published: December 2023

The objective of this study was to propose a method for detecting outliers in multivariate data. It is based on a boxplot and multiple linear regression. In our proposed method, the box plot was initially applied to filter the data across all variables to split the data set into two sets: normal data (belonging to the upper and lower fences of the boxplot) and data that could be outliers. The normal data was then used to construct a multiple linear regression model and find the maximum error of the residual to denote the cut-off point. For the performance evaluation of the proposed method, a simulation study for multivariate normal data with and without contaminated data was conducted at various levels. The previous methods were compared with the performance of the proposed methods, namely, the Mahalanobis distance and Mahalanobis distance with the robust estimators using the minimum volume ellipsoid method, the minimum covariance determinant method, and the minimum vector variance method. The results showed that the proposed method had the best performance over other methods that were compared for all the contaminated levels. It was also found that when the proposed method was used with real data, it was able to find outlier values that were in line with the real data.
Sensors for liquid level and analysis of thermodynamic processes during its freezing based on bulk acoustic waves
Authors:   Kotel'nikov Institute of Radioengineering and Electronics of RAS, Anisimkin Vladimir I. , Kuznetsova Iren E. ,   Kotel'nikov Institute of Radioengineering and Electronics of RAS, Smirnov Andrey V. ,   Kotel'nikov Institute of Radioengineering and Electronics of RAS
Published: December 2023

A fundamental property of longitudinal bulk acoustic waves (BAW) is their inability to propagate in a gaseous medium due to strong absorption in the MHz range and, on the contrary, their ability to propagate in liquids. Based on this property, a liquid level sensor based on BAW is proposed. For these purposes, for the first time, it was used not to measure changes in the velocity and attenuation of waves, but to change the time of their propagation from the emitter to the receiver. It is shown that this acoustic parameter is ideal for such measurements, since it weakly depends on temperature, but depends on the aggregate state of the propagation medium. A technique has been developed for non-contact research of exo-, endo- and isothermal processes accompanying liquid-ice and ice-liquid phase transitions. With its help, the isothermal nature of the water-ice phase transition under normal conditions was experimentally demonstrated.
Method for determining spacecraft motion parameters based on ultra-long-baseline radio interferometric measurements
Authors:   Sevastopol State Technical University, Afonin Igor L. , Polyakov Alexander L. ,   Sevastopol State Technical University, Tyschuk Yuri N. ,   Sevastopol State Technical University, Golovin Vladislav V. ,   Sevastopol State Technical University, Slyozkin Gennadiy V. ,   Sevastopol State Technical University
Published: December 2023

The proposed method for measuring current navigational parameters of spacecrafts makes it possible to control them to a certain extent using a single ground-based automated station. With this the following specifics of a single-station control are taken into account: location of spacecraft spatial-time monitoring stations, geometrical interpretation of these measurements, difficulties in processing of the received information and proper selection of radio equipment required for performing such measurements. The proposed method for trajectory tracking is based on the ultra-long-baseline interferometry. Measuring base here is the distance between a ground-based radio complex and onboard radio complex of the reference spacecraft that is constantly visible by the ground-based monitoring station. Onboard radio complex can include an array of spacecrafts traveling either along elongated elliptical orbit with an apogee height of more than twenty thousand kilometers or along a 36000 km high geostationary orbit. Application of the proposed method will help extend capabilities of the space monitoring system in terms of prompt clarification of public and private catalogues of spacecrafts orbiting the Earth.
Design of Slot Antenna based on Ansoft HFSS Software
Authors:   AL-Hikma University, Abdulhamid Mohanad
Published: December 2023

A micro-strip fed slot antenna array for the ISM band was built using standard formulas for calculating various antenna parameters. Half power beamwidth 57°, throughput about 7.7%. This is obtained by matching the impedance and the high level of the surface waves. To expand the bandwidth, a direct-coupled power was used, which provides the largest bandwidth, is fairly easy to model, and has low spurious radiation. A directivity of 2.01 dB was achieved. This is a fairly high figure, although an increase in directivity can also be obtained by using a different material and thickness of the substrate. HFSS software examines and analyzes antenna characteristics, including voltage standing wave ratio, return loss, and far-field radiation patterns.
New compounds of boron nitride with atoms in the sp + sp2 hybridized state formed on the basis of the bn-l4-8 layer
Authors:   Chelyabinsk State University, Ryashentsev Dmitry S. , Kudryavtseva Anna K. ,   Chelyabinsk State University
Published: December 2023

The density functional theory (DFT) method was used to determine the crystal structures and electronic properties of new layered polymorphic varieties of boron nitride with a graphyne-like structure. The structures of new graphyne-like monolayers consist of boron and nitrogen atoms in the sp- and sp2-hybridized state and were model-built from a layer of graphene-like boron nitride BN-L4-8 by partial replacement of atoms in the three-coordinated (sp2-hybridized) state by atoms in the two-coordinated state (sp-hybridized). As a result of theoretical analysis, the possibility of the existence of seven sp + sp2 new structures of boron nitride was established: one α-type, three β-types and three γ-types, differing in the proportion of atoms in the sp-hybridized state and their spatial arrangement. However, two of the three structural varieties with a minimum content of atoms in the sp-hybridized state (γ-type) turned out to be unstable and, in the process of geometric optimization, were transformed into structures of graphene-like layers of boron nitride. The structure of the BN-L4-8-γ2 layer passed into the structure of the original graphene-like layer BN-L4-8, while the structure of the BN-L4-8-γ3 layer passed into the structure of the graphene-like layer BN-L4-6-8, where there are no atoms in the sp-hybridized state. The sublimation energies of the new polymorphic varieties range from 16.23 eV/(BN) to 16.70 eV/(BN). The band gap varies from 3.777 eV to 3.878 eV.
Toward an optimal wavelet filter and decomposition level for noise elimination of the ECG signal
Authors:   Iraqi University, Ahmed Anas Fouad , Ibrahim Ali Rasim ,   Alsalam University College, Abood May H. ,   Al-Iraqia University, Computer Engineering Department
Published: December 2023

The denoising process represents one of the most important preprocessing steps for Electrocardiogram (ECG) signal processing and assists the specialist in making the right diagnosis for the patient. Five wavelet filters (WFs) closest in morphology to the pattern of the ECG signal were nominated, and their performances were analyzed at different noise, and number of decomposition (No. Dec) levels to determine the optimum, among them for noise reduction task. These Filters are Daubechies 4 (DB4), Daubechies 6 (DB6), Coiflet 4 (Coif4), Symlet 6 (Sym6) and Symlet 8 (Sym8). The results of the standard ECG signals (downloaded from MIT-BIH) revealed that the DB6 filter with four decomposition levels is optimal for removing noise of the ECG signal in terms of three metrics "Mean Square Error" (MSE), "Output Signal to Noise Ratio" (SNRo), and "Correlation Coefficient Index" (CCI). In addition, a simple and efficient threshold rule was adapted to be used in the proposed method. The suggested approach was successfully applied to reduce the noise of the ECG signals recorded using a simple proposed electronic circuit. Finally, the performance of the introduced scheme was compared with that of the standard ECG equipment, the "Biocare iE300", and the outcomes were very close.
Sound reflection from an elastic finite cylindrical shell of different relative lengths
Authors:   St. Petersburg State Marine Technical University, Ilmenkov Sergey L. , Pereselkov Sergey A. ,   Voronezh State University, Grachev Vladimir I. ,   Kotel'nikov Institute of Radioengineering and Electronics of RAS, Ladykin Nikolay V. ,   Voronezh State University
Published: December 2023

A calculation of the sound pressure frequency dependences scattered by a finite elastic cylindrical shell placed in a liquid medium is presented. The shell has hemispherical ends and is considered either hollow or filled with gas or liquid. The scattered sound pressure under conditions of hydroelastic contact on the shell surfaces is found by jointly using the Kirchhoff integral and the integral equation for the elastic medium displacement vector, obeying the Lamé equation. Boundary conditions regarding stresses and displacements are formulated for each of the shell contact surfaces with the external and internal environments. Considerating approach is based on the numerical transformation of continuous integral equations into a system of linear algebraic equations using curvilinear isoparametric boundary elements. In this case, the elements geometry and the main variables (displacements and stresses) are specified using the same interpolating relations (shape functions). The scattered sound pressure frequency dependences are calculated and analyzed for various ratios of the length and shell diameter.
Evaluation of noise immunity of multi-user MIMO systems with imperfect channel estimation and other distortions
Authors:   Tomsk State University of Control Systems and Radioelectronics, Shinkevich Artem , Pokamestov Dmitry A. ,   Tomsk State University of Control Systems and Radioelectronics, Kryukov Yakov V. ,   Tomsk State University of Control Systems and Radioelectronics, Rogozhnikov Evgeny V. ,   Tomsk State University of Control Systems and Radioelectronics, Shalin Georgy N. ,   Tomsk State University of Control Systems and Radioelectronics, Brovkin Andrey A. ,   Tomsk State University of Control Systems and Radioelectronics
Published: December 2023

The technology of multi-antenna MIMO (Multiple Input Multiple Output) systems is actively used in modern wireless communication systems. MIMO can enhance the performance of wireless data transmission systems, but their effectiveness depends on the transmission conditions. Ideal conditions are represented as a channel with a large number of possible signal propagation paths and an error-free estimation of its parameters. The estimation error significantly affects the performance of the beamforming algorithms used to mitigate inter-user interference in multi-user MIMO (MU-MIMO) systems. Spatial correlation of the channel results in a decrease in the number of independent information transmission streams. These factors can significantly reduce the performance of multi- antenna systems. For this reason, operating MIMO communication systems under non-ideal conditions is a topical issue. The paper examines the performance of various beamforming algorithms in such conditions. It describes the communication systems with MIMO, beamforming algorithms, and distorting effects. The paper includes a developed simulation model of the communication channel with MU-MIMO accounting for a variety of distorting factors. The results demonstrate the bit-error probability dependences for different simulation scenarios.
Heat transfer enhancement of electronic devices by using flexible printed circuit boards
Authors: EMAD Mustafa , ALJABAIR Sattar , IMRAN Ahmed Abdulnabi
Published: December 2023

In this paper, heat transfer in electronic equipment was studied numerically and experimentally, by investing in the flexible printed circuit board and changing the board’s orientation, which is the substrate of the electronic equipment from a vertical to a horizontal position. ANSYS Fluent software has been used to solve the continuity, momentum, and energy equations with the three-dimensional, unsteady, laminar and incompressible flow. In this study, the oscillatory motion equation was used as a boundary condition to represent the motion of the flexible board. In the experimental aspect of this study, a simulation of an ASUS motherboard (X399-A) with dimensions (30 x 25) cm and a Core i9 CPU with a fully working power of 130W was used to study the enhancement of heat transfer in the electronic devices by test rig specially made for this study. The results show that the flexible board’s enhancement in the heat transfer was (7%) vertically and (7.6%) horizontally compared with the rigid board for the same working conditions. The horizontal position is better than the vertical of the two types of rigid and flexible board, with improved heat transfer rates of (2.7%) and (3%); correlation Equations of the Nusselt number from experimental results are presented.
Duodenal dieulafoy injury: case report
Authors: M. López Juan D. , Hernández Christian A. T. , Gómez Darinel O. , Návar Aarón D. , Ortiz Carlos A. B. , Reséndiz Benjamín F. , Azpera Guadalupe L. L. , Delgado Katia E. H.
Published: December 2023

Dieulafoy's lesion is a rare but important cause of upper or lower gastrointestinal bleeding, resulting from bleeding from a large arterial vessel. Its extragastric location is rare and the diagnosis is usually endoscopic, allowing simultaneous treatment either with injection of sclerosing substances or by mechanical means. We present the case of a 72-year-old woman with severe gastrointestinal bleeding with Dieulafoy's lesion in the duodenal bulb, successfully diagnosed and treated endoscopically.
Prevalence of methicillin resistant staphylococcus aureus and its SCCmec type among students at a private dental college hospital in Chennai
Authors: Vinshia Jebadass Jasmine , Padmavathy Kesavaram , Sathyapriya Baskaran , Sudha Jimson
Published: December 2023

Background: Since asymptomatic nasal carriage of Methicillin-resistant S. aureus (MRSA) is on the rise among healthcare professionals (HCPs), their prompt detection and decolonization would substantially decrease disease transmission. The study's primary goal was to identify MRSA nasal carriers among dental students/CRIs and determine their SCCmec type and their susceptibility to mupirocin. Methods: Anterior nasal swabs from 102 healthy dental students/ CRIs were collected aseptically and subjected to standard microbiological testing. The antibiotic susceptibility pattern of the S. aureus isolates was determined by Kirby Bauer disc diffusion method and mecA-mediated oxacillin (methicillin) resistance was determined using the cefoxitin disc method. PCR analysis of MRSA isolates determined the presence of mecA and their SCCmec types. D test deduced inducible clindamycin resistance. Results: Of the 102 participants screened, only 8(7.8%) carried S. aureus. Antibiotic susceptibility testing revealed that 5/8(62.5%) were MRSA isolates. Of which, only 2 MRSA isolates harbored mecA, and both belonged to the SCCmec type V. All S. aureus isolates were sensitive to Vancomycin, teicoplanin, and tigecycline when tested using agar screening method while 2/8 (25%) of the S. aureus isolates were D test positive and belonged to iMLSB phenotype. Conclusion: MRSA nasal carriers amongst HCWs/dental students are a cause of concern as they are a significant reservoir for transmission of MRSA among their co-workers as well as the community. Our results signify the need for screening for MRSA carriage and decolonization with mupirocin to substantially decrease the transmission of MRSA among dental students/patients.
Old prints from Szczecin Collections in the University Library in Poznań: Characteristics of the collection and notes on its provenance
Authors: Łukaszewski Jakub
Published: December 2023

W artykule zaprezentowano ustalenia dotyczące liczby starych druków z dawnych księgozbiorów szczecińskich w Bibliotece Uniwersyteckiej w Poznaniu oraz omówiono ich proweniencje. Analiza materiałów z Archiwum Biblioteki Uniwersyteckiej w Poznaniu wykazała, że w latach 1945–1948 zwieziono do niej ze Szczecina ponad 2350 woluminów książek (głównie starych druków). Przegląd proweniencji starych druków Biblioteki Uniwersyteckiej w Poznaniu (prowadzony w latach 2021–2022) ujawnił, że obecnie znajdują się tam 2273 stare druki w 1550 woluminach z kilku historycznych szczecińskich księgozbiorów. Ponad 1700 druków ma proweniencję Gimnazjum Mariackiego (Bibliotheca Gymnasii Palaeo- Sedinensis / Bibliothek des Marienstifts-Gymnasiums zu Stettin). Około 500 dzieł pochodzi z Biblioteki Miejskiej (Stadtbibliothek Stettin, od 1916 Stadtbücherei). W liczbie tej znajdują się jednak książki pochodzące z innych, historycznych kolekcji Szczecina i Wismaru. Są nimi fragmenty księgozbiorów takich instytucji, jak: Gesammt-Kirchen-Bibliothek von St. Jacobi Stettin, Bibliotheca Summi Regii Tribunalis Wismariensis (fragment księgozbioru od 1879 r. w Oberlandesgericht Stettin), Appellationsgericht Stettin, Pommersches Museum, Stadtgymnasium, Rathsbibliothek oraz Loge zu den Drei Zirkeln. Kilkanaście starych druków pochodzi z Biblioteki Towarzystwa Historii i Starożytności Pomorza (Bibliothek des Gesellschaft für Pommersche Geschichte und Alterthumskunde in Stettin).
Papillary Variant of Oral Squamous Cell Carcinoma of Alveolar Mucosa- A Case Report and Review
Authors: Loganathan Mahalakshmi , Murugavel Shobana , Shenpaga Priya Immudi Paranjothi , Balasubramaniam Senthilkumar
Published: December 2023

Papillary Squamous Cell Carcinoma (PSCC) is a less frequent subtype of Squamous Cell Carcinoma (SCC) with a more favorable prognosis compared to conventional oral squamous cell carcinoma. PSCC has a distinctive exophytic and papillary projection. The upper aerodigestive tract is the most commonly affected site with a higher incidence of occurrence in the larynx. The papillary variant of oral squamous cell carcinoma involving gingiva or alveolar ridge is relatively uncommon and less reported. Other differential diagnosis of papillary gingival masses is reactive gingival lesions and fungal infections. An accurate diagnosis is vital for both therapeutic and prognostic purposes. This article describes the case of papillary variant oral squamous cell carcinoma in a 75-year-old male in the maxillary alveolar region depicting histopathological features of exophytic growth with hyperplastic stratified squamous epithelium with basaloid cells invading the underlying connective tissue.
Editorial Commentary
Authors: Kharbanda OP , Mehta Abhishek , Katyal Sakshi
Published: December 2023

No Abstract.
Market analysis of added-value chain products and employability of young people in North Benin
Authors:   University of Abomey-Calavi, Assogba MF , Gnonlonfoun N ,   SNV Netherlands Development Organization Benin, Vroeg P ,   SNV Netherlands Development Organization Benin
Published: December 2023

The challenge of young people employability in Africa and particularly in Benin continues to rise with acuity. The majority of young people are affected by underemployment, or are without decent jobs. This is the reason why the Netherlands Development Organization (SNV) implemented the Youth Employment project for the Improvement of Food Security in northern Benin (EJASA). This study aimed to analyze the added-value chains (AVC) from different agricultural sectors in order to assess their ability to ensuring the employability or professional integration of young people. This study analyzed six (06) added-value chains divided into three (03) sectors as follows: AVCs from market gardening sector (tomato fruit and fresh chilli pepper), AVCs from soybean sector (soybean grain and soybean cheese) and AVCs from the poultry sector (local chicken and guinea fowl). The results obtained showed that the overall demand of the selected AVC products was generally satisfied only at the level of 10 to 40% in the targeted municipalities, which suggests opportunities for positioning and entrepreneurship for young people. All the AVCs analyzed are profitable with the best rates of return (RNE/CT ratios) recorded for the AVC of guinea fowl (4.7), chilli pepper (1.6), tomato (1.1) and soybean grain (0.9), while the best wealth creation rates (VA/CI) observed for AVC guinea fowl (6.2), chilli pepper (4.5), tomato fruit (2.4) and soybean grain (1.6). The strong demand for AVC products, the existence of sales markets for all AVCs, the permanent support from technical and financial partners, and support structures for access to financing are all opportunities available to young people to ensure their employability and improve their income. The access to a well-paid job in one of the AVCs will help young people to improve their income and consequently to fight poverty and improve their food and nutrition security situation. Key words: Food value chains, youth employment, Improved income, Food security, Nutrition