bluuebunny/crossref_metadata_2025 huggingface dataset:
IMPROVING THE PERFORMANCE OF ZNO NANOPARTICLES FOR EOR IN HIGH-TEMPERATURE AND HIGH SALINITY CARBONATE RESERVOIRS
Authors: Khazaei Masoud , Hosseini Marzieh Sadat , Haghighi Ali Moshfegh , Misaghi Majid
Published: January 2023

The main challenge of the application of nanofluids for enhanced oil recovery (EOR) in carbonate reservoirs is to maintain colloidal stability under reservoir conditions with high salinity and high temperature. In this study, we address this issue by increasing the stability and hydrophilicity of ZnO nanoparticles by adding TTIP. Adding TTIP on the surface of ZnO nanoparticles results in an increase in the hydrophilic heads in the final product. Then, these nanoparticles are used to coat carbonate rock surfaces to change their wettability. The coated rock plates are obtained by aging them in nanofluids. The modified ZnO-based coatings show to be more effective for wettability alteration purposes compared to the conventional ZnO coating. The un-coated rock plate is strongly oil-wet, where the water and n-heptane droplets contact angles on this surface are 168° and 0°, respectively. After aging the rock samples in nanofluids, superhydrophilic coatings form on the superhydrophobic surfaces. The rock surface before and after treatment, as well as the synthesized nanoparticles, are characterized by scanning electron microscope (SEM), x-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR) analyses. Results of this study indicate the possibility of using the materials for wettability alteration of oil-wet carbonate rock in the EOR process. The results of core flooding tests demonstrate that the oil recovery enhances significantly through the nanofluid flooding.
Affirmative Refusals: Reclaiming Political Imagination with Bonnie Honig and Lola Olufemi
Authors: Seitz Sergej , Seitz Sergej
Published: January 2023

This article reconstructs Bonnie Honig's A Feminist Theory of Refusal (2021) and brings it into dialogue with Lola Olufemi's Experiments in Imagining Otherwise (2021). I set out by showing how both Olufemi and Honig reclaim radical political imagination in a time of vanishing alternatives, focusing on the notion of refusal as well as on the powers and limitations of the historical archive. Second, I retrace Honig's way of conceptualizing feminist refusal by taking up three 'refusal concepts,' namely inoperativity (Agamben), inclination (Cavarero), and fabulation (Hartman) via a reading of Euripides's Bacchae tragedy. In Honig, the play serves a double purpose: it exemplifies and critically radicalizes the three refusal concepts that she envisages. Turning to Olufemi, the idea is that her Experiments can be read in a similar way in regard to Honig's own reflections: namely as both exemplifying and challenging various aspects of Honig's refusal theory, thus further radicalizing political imagination.
El ganado nos lleva a nuestros enemigos: ecología de Turkana, Política y asalto en un sistema de desequilibrio
Authors: Gómez Mejía Juliana
Published: January 2023

J. Terrence McCabe es profesor del Departamento de Antropología e investigador del Environment and Behavior Program, Institute of Behavioral Science de la Universidad de Colorado. El texto Cattle Bring Us to Our Enemies hace parte de la serie Human-Environment Interactions editada por Emilio Morán, en la cual se publican investigaciones multidisciplinares sobre las interrelaciones entre el ambiente biofísico y las poblaciones, con énfasis en las dimensiones humanas del cambio ambiental global. En esta obra, que fue ganadora del premio Julian Steward de la American Anthropological Association (2005), McCabe exhibe las tensiones ambientales y políticas en que viven las poblaciones pastoriles Turkana del norte de Kenia.
Narrar la paz en clave juvenil
Authors: Carreño Manosalva Clara Inés
Published: January 2023

Este artículo presenta el análisis de diversas narrativas escritas por jóvenes estudiantes de la Universidad de La Salle con relación a las nociones de posconflicto y paz en el contexto del reciente proceso de negociación entre el Estado colombiano y las (ex)FARC-EP. Su análisis se propone a partir de la comprensión de sus posicionamientos, estéticas, formas de enunciación y horizontes de sentido construidos en experiencias de participación política en torno a la paz. Sus discusiones vindican la organización social y la participación juvenil como escenarios centrales en la formación de sujetos políticos, en tanto que posibilitan competencias en el ejercicio activo de la ciudadanía tales como el diálogo de saberes, la democratización de la información y el  conocimiento, y la construcción de sentido y la reflexión crítica, necesarias ellas para la construcción de la paz en Colombia.
El mundo totea: aprendizajes de la vida de los ruidos en San Bernardo, Cundinamarca
Authors: Rodríguez Suárez Ana María
Published: January 2023

Los campesinos de San Bernardo, Cundinamarca, tienen la certeza de que el mundo vive “totiando”. Este artículo desarrolla la noción de “totiar” como una teoría atenta a los sonidos que ocupan lugar en la vida de mis amigos y maestros. Las reflexiones que aquí se presentan son producto de mi trabajo como jornalera durante el primer semestre de 2019 y parte de 2020. Trabajando en los cultivos de la vereda Agua Negra aprendí que “totiar” es un concepto que explica diferentes dimensiones sonoras y materiales de la vida campesina. Este artículo argumenta por diferentes recorridos sonoros que los sonidos no son  un telón de fondo y que para llevar la vida es necesario poner atención a los ruidos.
BOOK REVIEW Visual Thinking Strategies in Montessori Environments
Authors: Broome John
Published: January 2023

Using almost 30 years of research, the National Center for Montessori in the Public Sector (NCMPS) and Philip Yenawine present the case for visual thinking strategies (VTS) as an opportunity to apply these strategies in the Montessori learning environment by centering engagement with art. The overall goal of VTS is to provide an accessible transformative learning experience through an open-ended discussion of visual art that increases a student’s literacy, language, and critical thinking skills.
Economic Consequences of the Special Military Operation and Western Economic Sanctions
Authors:   Siberian Institute of Management – the branch of the Russian Presidential Academy of National Economy and Public Administration, Novosibirsk, Khanin Grigory
Published: January 2023

The article considers the short-term, mid-term and long-term economic consequences of the special military operation by the Russian Federation in Ukraine and the impact of Western economic sanctions on the economic development of the Russian Federation from March till June 2022. Despite a short time passed since the beginning of the special operation and the introduction of economic sanctions against Russia, they have already made a serious impact on the Russian economy. There has been a rapid deterioration of many general and sectoral indicators. The slow-down in the investment sector is particularly dangerous in terms of mid-term consequences. The secrecy of much statistical and accounting data, imposed for the first time in the post-Soviet period, can be considered an indirect indicator of the severity of the economic crisis. While assessing the mid-term consequences of the current economic crisis, attention is drawn to the structural weaknesses of the Russian economy that have developed over the past 30 years and to the degradation of material and human capital during this period. The development of the country is compared to the movement of a ship. It is shown that with the current defects, the ship called ‘Russia’ in its current state is not able to withstand the storm caused by the military operation and economic sanctions. The economic, scientific and technical development of the USSR and the Russian Federation over the last 60 years is analyzed in detail. The analysis has shown that during this period almost all most important economic, scientific and technical indicators together with the intellectual potential demonstrated a continuous degradation. Thus, the Russian society and the state are facing the consequences of the mistakes and missed opportunities of the past 60 years. A lot of effort and time are required to overcome the consequences of these mistakes.
Theoretical and Methodological Aspects and Applied Features of Strategic Planning of Regional Tourism Development
Authors:   Novosibirsk State University of Economics and Management, Russian Federation, Kovalev Alexander , Tyunyukova Elena ,   Novosibirsk State University of Economics and Management, Russian Federation, Shchetinina Natalia ,   Novosibirsk State University of Economics and Management, Russian Federation
Published: January 2023

The article presents some aspects of the implementation of regional policy in order to enhance the development of regions through the formation of strategies as tools for strategic management of the region. Special emphasis is placed on the specifics of strategic planning of tourism development in a regional context, which is based on a strategic analysis of the current socio-economic situation of the region using social and economic evaluation criteria. The groups are identified and the characteristics of the economic development indicators of the regions are given, the specific characteristics inherent in regional tourism in the context of its strategic planning process are determined. All of the above processes create a new configuration of the spatial development of the country, through the formation of zones of advanced economic growth, including using the sectoral specialization of the regions. At the same time, the competitive advantage of the regions of the South of Russia is determined by the tourist vector of their development as the most promising. The article describes the cycle of strategic planning of regional tourism development, which includes a number of stages: determining the goals of tourism development in the region; analysis of the external and internal environment of the development of the region; development of a concept and development strategy; development of an industry development plan; analysis of efficiency and effectiveness, adjustment of goals and methods to achieve them. The approaches to strategic planning of the development of socio-economic objects from foreign practice are presented, based on a system of indicators that allow an objective assessment of the development of its potential, which are understood as a set of characteristics formalizing the description of the main parameters that provide the choice of the optimal variant of the system functioning at different stages of the strategy implementation. In addition, the normative legal acts of various levels regulating modern socio-economic relations in the tourism sector of the regions are given; macro and micro tools for the development of regional tourism on the example of the Republic of Crimea are defined.
Anthropological and Axiological Effects of the Spread of Screen Technologies in Culture
Authors:   Russian State Agrarian University – Moscow Timiryazev Agricultural Academy, Grigoryev Sergey
Published: January 2023

The main purpose of the research is the analysis of personality and its value attitudes in modern screen culture, the description of the process and conditions of the formation of the anthropological type of “screen man” personality is considered from the standpoint of the existential approach in philosophy, as well as from the standpoint of humanistic psychology. In the study of personality, the author refers to the concept of A. Maslow, which allows us to understand the deep basic needs of the existence of personality in modern screen culture. A hermeneutical analysis of philosophical and anthropological views of A. Maslow and V. Frankl on the phenomenon of personality is undertaken. The author gives a critical assessment of the understanding of personality and its capabilities in modern screen culture. The practical application of philosophical and anthropological ideas of representatives of existentialism to the understanding of personality in modern screen culture is also shown. The research is based on historical-comparative, hermeneutical and dialectical methods.
OSU TriState SenNet Processing and Storing of Explanted IPF Lungs v1
Authors: D. Stacey Sean
Published: January 2023

This protocol describes the processing and storing of explanted idiopathic pulmonary fibrosis (IPF) lungs by the Comprehensive Transplant Center (CTC) Human Tissue Biorepository before arrival at the TriState SenNet Biospecimen Core of The Ohio State University that functions as a part of the Cellular Senescence Network Program (SenNet). This protocol is based on the CTC Human Tissue Biorepository's standard operating procedure established for tissue collection for explant and donor samples. We follow routine laboratory specimen processing guidelines to ensure the highest biospecimen quality.
Liposome Encapsulation of Hydrophilic and Hydrophobic Drugs v1
Authors: Field Aisling
Published: January 2023

Dried reconstituted vesicles (DRV) are liposomes that are produced under mild conditions and can encapsulate very high amounts of hydrophilic solutes. These characteristics make this liposome type perfect for entrapment of drugs ( Antimisiaris, 2016). To produce DRV’s, the lipid ingredients are firstly dissolved in an organic solvent (chloroform), dried on a rotary evaporator to obtain a thin film, followed by lipid hydration (in the aqueous medium at a temperature greater than the phase-transition temperature) and lastly to homogenize and reduce the vesicle size, where the extrusion technique is used. This process produces heterogeneous multilamellar vesicles. Cholesterol is added into the bilayer structure to aid liposome formation, and to stabilize against aggregation and drug leakage(Ahmad and Dwivedi, 2017). The thin-film method is one of the most widely used liposome encapsulation methods. It is based on the generation of a thin film of lipids, formed on the inner wall of the rotary evaporator flask. The film is then hydrated with water. Before the hydration, it is integral that the lipid film is preheated above the lipids transitional temperature to enable a smoother creation of the bilayer, along with the vigorous shaking. This allows the film to peel off the flask and form liposomes. The liposomes generated are multilamellar vesicles of different sizes. The encapsulating substance can be added with the lipids before the formation of the thin film (hydrophobic compounds) or with the water (hydrophilic compounds). The advantage of this method is its high reproducibility even when working with small quantities of compounds (Šturm andPoklarUlrih, 2021). This protocol describes the liposome encapsulation of hydrophobic and hydrophilic drugs using thin-film dispersed hydration method. Extrusion method with a polycarbonate membrane is used to make liposomes of suitable sizes that can be easily internalized by mammalian cells.
Análisis y contextualización de las respuestas articuladas en San Juan de Puerto Rico contra los efectos de lluvias torrenciales (1750-1850)
Authors: Luque Azcona Emilio José
Published: January 2023

Este trabajo forma parte de un conjunto de investigaciones con las que pretendemos contribuir al estudio de la circulación de ideas sobre la ciencia de policía en el Caribe, en el contexto del impacto que el proceso de globalización incipiente tuvo sobre la región. En este caso planteamos el análisis de los efectos y las respuestas dadas a los problemas generados en el centro urbano de San Juan de Puerto Rico por lluvias torrenciales entre los años 1750 y 1850, coincidiendo con la materialización en la ciudad de algunas infraestructuras significativas y la implementación de medidas relacionadas con la mejora de las condiciones de salubridad. Para ello, hemos consultado las actas capitulares de la ciudad de San Juan de Puerto Rico y analizado algunas de las disposiciones contempladas sobre este asunto en los bandos de buen gobierno del período.
A Control Method Based on Computer Vision and Machine Learning Technologies for Adaptive Systems
Authors: Obukhov A. D. , Nazarova A. O.
Published: January 2023

We consider the problem of organizing the control process in adaptive systems, in which it is required to ensure the preservation of the optimal state of the system when external conditions change. The analysis of existing approaches to its solution showed grea t promise in the synergistic effect of using machine learning and computer vision technologies. A system analysis of the management process using these technologies has been carried out. Its prim ary objects have been formalized, and the research task has been set. To solve it, a method is proposed, the novelty of which lies in the usage of machine learning and computer vision technologies for recognizing and obtaining a compresse d idea of the state of the observed environment, objects of observation and control. And also, the choice of the control team was unified, based on three approaches: a system of rules, a neural network with classification, and machine learning with reinforcement. All stages of the method are formalized, and the possibility of using machine learning technologies (neural networks) for their i mplementation is theoretically substantiated. The practical significance of the developed method lies in the possibility of automating the activities of a human operator in complex adaptive systems through the use of machine learning and computer vision technologies. The method was tested on the example of an adaptive running platform control system. Experimental stu dies have been carried out to assess the efficiency of the method, its perfor mance and accuracy of work in determining the state of objects of observation using computer vision technologies. The result of the work is the proven high efficiency of the proposed approach. The usage of computer vision and machine learning technologies made it pos sible not only to control the adaptive running platform but also to determine critical situations (falling or sudden stop of a person), which increases the safety of the control system, expands its functionality in monitoring the state of the environment and objec ts of observation
New Approach to the Synthesis of Optimal Terminal Control of Nonlinear Dynamic Systems
Authors: Ivanov V. P.
Published: January 2023

The problem of constructing common solutions to terminal control problems of nonlinear systems is considered here. Previously proven positions are used that the optimal trajectory is an envelope of a parametric family of surfaces (a parametric family of singular curves), and that optimal control can be found on this family. The fact that at each point of the optimal trajectory the vector-function of Lagrange factors is tangent to it, but also tangent to the singular curve, is played out here. A constructive method of constructing singular curves based on conditional separation of variables in the Hamilton-Jacobi equation is given. The " free" parameters of singular curves are based on the condition of minimizing the terminal functionality, which avoids an explicit solution to the boundary problem for a class of nonlinear dynamic systems, and simplifies computational algorithms. Singular curves are described by a reduced (abbreviated) mathematical model. Thus, to synthesize the law of optimal control, we must use the complete (original) mathematical model of the dynamic system, but to calculate it at one time or another, it is enough reduced model. This consideration defines the principle of informational dualism. An illustrative example is given. It has been shown that this approach can be used to solve some classes of differential games.
Peirce’s Semiotics: Use of Gestures as a Potential Semiotic Resource for Teaching Bohr’s Atom Model
Authors: Freitas Donadello Savana Dos Anjos , De Andrade Neto Agostinho Serrano
Published: January 2023

Background: Gestures, seen through Peirce’s semiotics as semiotic resources, have the potential to be revealed as cornerstones for the teaching of physics and, in particular, for the teaching of Bohr’s atomic model. Initially, the semiotic perspective in the teaching process will be addressed and, subsequently, the role of gestures and non-verbal communication as a semiotic resource. Objective: To investigate the contribution of gestures as a potential semiotic resource in teaching Bohr’s atom model. Design: The principles of a qualitative study were observed. Setting and participants: Videos of a preparatory course for ENEM, in the subject of Physics, made by the secretary of education of the state of RS, Brazil, free of charge via the internet. Data collection and analysis: A total of seven hours of online classes of a preparatory course for ENEM are analysed. For the gestural microanalysis, episodes on Bohr’s atom were chosen, with two distinct episodes: the first on the photon and the second on energy levels. Results: From the research analysis carried out on signs within the Peircean framework, it is possible to infer that gestures have the potential to be used as a semiotic resource in the classroom. Conclusion: We found that gestures can be a potential semiotic resource in teaching Bohr’s atom model, as they can enable an articulation between different semiotic resources.
The Curriculum Proposals of the State of São Paulo in the 1980s: Impacts of a New Expertise for Teaching
Authors: Valente Wagner Rodrigues , De Gouvêa Gisele
Published: January 2023

Background: The historical analysis of a given curricular production makes it possible to understand how, at a given time, the production of new knowledge occurs, made official in some documents, thus providing references for teaching and teacher education. Objectives: The study intends to answer the following question: How to understand the negative criticisms disseminated by the press to this curricular production, in terms of the elaboration of a new teaching expertise? Design: This study is a research from a historical perspective. This is a documentary research that has as its source material from newspapers from the 1980s. Setting and Participants: The research presents aspects of a curriculum production from the 1980s. Sows the impacts emitted by the newspapers of the time on a curricular production. Data collection and analysis: As an empiric of the research, the articles published in São Paulo newspapers are considered at the time of the elaboration of the proposals. Such a question is justified, therefore, because it makes it possible to explain the process of producing new knowledge for teaching based on the actions of experts. Results: Going through the actions of the experts shows us that it is fundamental to understand the tensions between the fields present behind the scenes of elaboration. From the tensions, knowledge will be theoretically constructed. Conclusions The answer obtained shows the decisive role of the press and the struggles waged for the consolidation of this official curricular document. The curricular documents of a given time govern and provide references for the teaching and training of teachers of that time.
Study of Round Bodies: Conceptions and Praxis of a Didactic Sequence in Light of Guy Brousseau’s Theory
Authors: Rachelli Janice , Pinheiro Ana Lúcia Vaghetti , Porta Leonardo Dalla
Published: January 2023

Background: Guy Brousseau’s theory of didactic situations has been considered an apparatus for the methodological structuring of didactic sequences configured in didactic and adidactic situations. Objectives: To investigate the contributions of the theory of didactic situations to the study of round bodies, focused on a praxis that meaningfully consolidates knowledge for the students. Design: We propose solving problem situations concerning the calculus of surface areas and volumes of round bodies using Cavalieri’s principle and Pappus’s theorems. Setting and participants: The research was conducted with two high school third-grade classes of a state institute of education located in the municipality of Júlio de Castilhos, RS, Brazil, with the participation of 25 students. Data collection and analysis: It was carried out through activities developed in the classroom and feedback given through Google Classroom. It was subsidised by the documental transcription of students’ records. Results: The research indicated that the didactic sequence development favoured intellectual autonomy and meaningful learning about the object of knowledge. Conclusions: The theory of didactic situations provided important subsidies for didactic organisation and analysis of the knowledge consolidation process involving the study of round bodies, indicating its application in the study of other mathematical objects in high school and higher education.
Elementos característicos da Ecoinovação para guiar a Gestão sustentável nas organizações
Authors: Moreno Edinei Antônio , Dutra Ana Regina de Aguiar
Published: January 2023

A sustentabilidade pode ser definida como uma forma de desenvolvimento focado na melhoria da qualidade de vida de todos os seres vivos do presente e do futuro, atingindo diferentes dimensões com o significado de manter e conservar o meio ambiente. A ecoinovação surge como elemento central do debate diante do crescente problema ambiental decorrente da ação humana e que incorpora a dimensão ambiental com a inovação no fortalecimento e promoção de uma gestão sustentável e inovadora. O objetivo desta pesquisa é identificar elementos característicos da ecoinovação que contribuam com a gestão sustentável nas organizações. Para atingir este objetivo desenvolveu-se uma revisão bibliográfica utilizando a revisão integrativa da literatura para o levantamento, análise e discussão dos dados. Como principal resultado demonstra-se um rol qualitativo de elementos característicos da ecoinovação que podem ser utilizados e adaptados ao contexto das organizações para uma gestão sustentável. Tem-se como considerações finais que os elementos característicos da ecoinovação apontados, em consonância com os ODS, proporcionarão aos futuros pesquisadores subsídios necessários para se guiarem no que tange a construção de parâmetros aos gestores, visando o levantamento da situação atual e mecanismos para a tomada de decisões que resultem em uma gestão ecoinovadora.
EFFICIENCY OF THE CURRENT SYSTEM OF REMUNERATION IN THE PUBLIC SECTOR
Authors:   Taras Shevchenko national University of Kyiv, Novokreshchenova D.
Published: January 2023

The range of public sector entities was defined in accordance with the effective legislation. The current remuneration in the public sector was studied, that allowed to identify the system’s main problems. Also, the main aspects were summarized that must be considered when reforming remuneration costs in the public sector, particularly in budgetary institutions. The difference in the interpretation of the categories “remuneration” and “wages” is considered. The structure of the general public management sector and the structure of the employee benefits fund were approved by the salary statistics instruction and were graphically depicted. The forms and systems of the wage fund and the structure of remuneration in the public sector are considered. The reform of the remuneration system in public sector is analyzed and ways for its improvement are proposed. Public demand for high-quality and highly qualified public service posed many problems for the public administration system. Indispensable changes in the principles and approaches to public management begin with motivated, depoliticized specialists capable of qualitatively performing the assigned tasks. One of the critical factors in forming such motivation is the projected remuneration system. On the other hand, the lack of stability and predictability of remuneration leads to low-quality public administration and politicization. The paper explores the mechanisms of politicization of civil service through remuneration and analyzes the legal framework for calculating remuneration and in-depth interviews with civil servants regarding their motivation.
DEMOGRAPHIC SITUATION IN UKRAINE: THE SECOND DEMOGRAPHIC TRANSITION AND UNCERTAINTY
Authors:   Taras Shevchenko national University of Kyiv, Palian Z. , Vynohradova D. ,   Taras Shevchenko national University of Kyiv, Vynohradova M. ,   Taras Shevchenko national University of Kyiv
Published: January 2023

In recent years, Ukraine and most regions and countries are experiencing rapid demographic changes. The demographic transition is characterized by the exhaustion of demographic potential caused by the unfavorable socio-demographic situation in the country. This article aims to describe the current demographic situation in Ukraine and reveal major demographic trends leading to economic, social, and environmental unbalances and malfunctions of development models in Ukraine. Tendency for the Ukrainian population decline is caused predominantly by a decrease in the birth rate and an increase in mortality. Women’s fertility has dropped rapidly, and life expectancy has stagnated, driven primarily by unfavorable economic situation, political instability, poor health care system, and social inequality. In Ukraine as in many countries, regardless of the level of their economic development, fertility rates are now below 2.15 children per woman, treated as a long-term replacement rate. Past trends in fertility and mortality have led to an increasingly older population. The aging of society is a challenging phenomenon which characterizes the current stage of the global demographic transition. Migration is another trend that leads to unprecedented demographic changes resulting in more evident variation in aging at the regional level. Ukraine is experiencing the move from rural to urban areas within countries and across borders which causes deprivation of the rural regions and redistribution of the working-age population. Nowadays, the demographic situation results from the adverse impact of internal and external factors. Russia’s invasion of Ukraine may lead to a demographic catastrophe. However, the scale of war consequences is hardly estimable. It is unknown how this war will evolve or when and how it will end, but it has already substantially affected Ukraine’s population.
Matching Subcarrier Resource Allocation and Offloading Decision
Authors: Alhusenat Ahmad Y. , Alma'aitah Abdallah Y. , Hayajneh Khaled F.
Published: January 2023

A heterogeneous cellular network can define as a network that is composed of different cell sizes (macrocell (MeNB), small cell (SeNB), femtocell). Such heterogeneity of network is the backbone of the 5G networks where new applications on mobile devices need extensive computing power consumption and ultra-low latency constraints. Using a heterogeneous network will provide multiple paths in which the users’ data can flow through the network depending on the users’ available resources, remaining energy, etc. we study the heterogeneous network model, which contains MeNB, SeNB and femtocells. Also, we propose a matching subcarrier resource allocation and offloading decision (MSRAOD) algorithm, that depends on recourse allocation optimization. The main optimization goal has been set to minimize the total energy consumption of mobile users’ devices with acceptable latency requirements of the applications. Our proposed algorithm results show that the proposed algorithm enhances the average energy consumption of mobile users in the heterogeneous network.
The method of spectral analysis of the determination of random digital signals
Authors: Laptiev Oleksandr , Tkachev Volodymyr , Maystrov Oleksii , Krasikov Oleksandr , Open’ko Pavlo , Khoroshko Volodimir , Parkhuts Lubomir
Published: January 2023

The methods of spectral analysis based on the use of any model to describe the signal are considered in the article, while using them some assumptions about the behavior of the signal outside the observation interval are made.  The task of spectral analysis or evaluation, in this case, is to find the parameters of the model used, which is selected based on the available a priori information about the studied process.A new spectral analysis method is proposed, which uses the partially classical Prony method, and this method has been improved by replacing the damping sine wave with the use of damped sine wave.Replacing damped sine wave with the use of non-damped sine wave, allows you to very accurately isolate the signal and determine its characteristics against the background of very rich in interference with air space, against the background of radio devices that work legally. For the first time, a fast conversion algorithm was applied to solve the normal equations for finding variables to sequentially determine the parameters of random short-term signals such as amplitude, frequency, and phase.  It is suggested to determine not only static parameters but also the rate of change of these parameters.  Speed of change of parameters allows determining more carefully the signal of the means of silent receiving of information.Modeling of processes of determination of random short-term pulses simulating digital signals of the means of silent receiving of information is carried out, on the basis of the proposed method of spectral analysis, the simulation results are presented in the form of three-dimensional graphs.The main difference is the use not only of the analysis of the amplitude, frequency, phase, and spectrum of the signal but the main analysis of the spectral density of the signal.Analyzes of the simulation result fully confirm the advantages of the proposed method for the determination of random short-term pulses.
Machine Learning Techniques for Malware Detection with Challenges and Future Directions
Authors: Alqhatani Mohammed A
Published: January 2023

In the recent times Cybersecurity is the hot research topic because of its sensitivity. Especially at the times of digital world where everything is now transformed into digital medium. All the critical transactions are being carried out online with internet applications. Malware is an important issue which has the capability of stealing the privacy and funds from an ordinary person who is doing sensitive transactions through his mobile device. Researchers in the current time are striving to develop efficient techniques to detect these kinds of attacks. Not only individuals are getting offended even the governments are getting effected by these kinds of attacks and losing big amount of funds. In this work various Artificial intelligent and machine learning techniques are discussed which were implements for the detection of malware. Traditional machine learning techniques like Decision tree, K-Nearest Neighbor and Support vector machine and further to advanced machine learning techniques like Artificial neural network and convolution neural network are discussed. Among the discussed techniques, the work got the highest accuracy is 99% followed by 98.422%, 97.3% and 96% where the authors have implemented package-level API calls as feature, followed by advanced classification technique. Also, dataset details are discussed and listed which were used for the experimentation of malware detection, among the many dataset DREBIN had the most significant number of samples with 123453 Benign samples and 5560 Malware samples. Finally, open challenges are listed, and the future directions are highlighted which would encourage a new researcher to adopt this field of research and solve these open challenges with the help of future direction details provided in this paper. The paper is concluded with the limitation and conclusion section
Enhancing Route lifetime in Vehicular Ad Hoc ?Networks Based on Skellam Distribution Model
Authors: Tawfeeq Mohammed Ali
Published: January 2023

The emergence of smart cities and the need to use intelligent transportation systems has led to an increased reliance on vehicle ad hoc networks (VANET). The topology of VANET is highly dynamic, which results in a short effective routing time. This paper presents  a two-stage algorithm to select a route that can sustain communication between vehicles for as long as possible while taking into account the variables that affect the VANET topology. The first stage uses Skellam distribution model to assess the connectivity probability of paths in ?a 2d road network based on traffic-flow and the number of vehicles ?joining and leaving the ?network,  accordingly, the path with the highest connectivity is chosen. In the second stage, the control packets sent only to vehicles on the selected path to detect routes between source and destination, thus reducing the overhead of control packets and increasing network stability. ? the algorithm adopts the principle of global evaluation to ?estimate the lifetime ?of the ?detected ?routes within the chosen path. ?the route with the ?best estimated ?lifetime ?is ?chosen to be ?the active route. ?in the event of route failure, the validity of the next route in lifetime is confirmed to be adopted as the alternate route. The proposed algorithm was compared with both on-?demand distance ?vector routing protocol (AODV) protocol and the modified location-aided routing ??(LAR) ?protocol. The proposed algorithm showed greater network stability, higher performance in terms of longer lifetime route detection, less energy consumption and higher throughput.
Gastroprotective activity of yogurt fortified with purple roselle extract in rats exposed with 2,3,7,8-TCDD
Authors: Setianingrum Ani , Firdhiani Syafira , Prihastuti Haskito Ajeng Erika , Fauzi Ahmad
Published: January 2023

Persistent organic pollutant 2,3,7,8-Tetrachlorodiobenzo-p-dioxin (TCDD), known as harmful congeners of dioxin, has many adverse effects on human or animal health. This TCDD enters the body through inhalation, ingestion, and skin contact. Purple Roselle is a well-known herb-medicinal plant having antioxidant properties. This study aimed to evaluate the antioxidant capacity of purple roselle water extract along yogurt against dioxin exposure. The antioxidant properties of the extract were measured by malondialdehyde (MDA) levels and gastrointestinal histology. For this, 25 white male rats (Rattus norvegicus) were used, and these rats were divided into five groups negative control, positive control (TCDD 200 ng/kg BW), and three treatment groups (TCDD 200 ng/kg BW + yogurt fortified with purple roselle water extract concentrations 0.5, 1, and 1.5 percent), all the treatments were given orally. Gastric MDA was determined quantitatively using the Thiobarbituric Acid (TBA) method and the one-way ANOVA test, continued by a Tukey post hoc test with a confidence level of 95% while the gastric histology was observed descriptively. Results of the study revealed that supplementation of fortified yogurt with 1% purple roselle extract could dramatically reduce MDA levels (p<0,05) and heal histological damage in the lamina propria mucosa of stomach rats subjected to TCDD. Results of the study can be concluded that consuming yogurt with purple roselle extract can reduce MDA levels and repair histological damage to the gastric mucosa caused by dioxin exposure.
A study of stress factors during the learning of anatomy in Gaston Berger University of Saint-Louis
Authors: Niang Mouhamadou Moustapha , Manyacka Ma Nyemb Philippe , Yattara Habsatou , Ndiaye Aïnina , Gaye Magaye , Ndiaye Abdoulaye
Published: January 2023

Among medical students, stress has always been a major problem. Medical studies are known to be long, stressful, and difficult. The dropout rate is high in medical studies; it is often associated with chronic fatigue and a permanent state of stress. The objectives of our work were to determine the different aspects of stress, to assess the intensity of stress, to determine an association between perceived stress and socio-demographic characteristics; and to make recommendations to optimize our student’s performance.

This was a cross-sectional and descriptive study aimed at determining the different aspects of stress experienced by license 2 and license 3 medical students at Gaston BERGER University during the teaching of anatomy. We proposed 29 questions with 5-level Likert scale responses.

The response rate was 91.5% with a male predominance (sex ratio of 1.17). The minimum, average and maximum stress degrees were 4%, 54.52% and 100% respectively; the intensity was higher among female students (60%) than male students (50%); the youngest between 18 and 21 years old had a stress intensity of 50%; and 60% between 22 and 25 years old.

Our study, which focused on the stress experienced by medical students during the “anatomy and organogenesis” teaching unit, highlighted many particularities. It appeared that stress is relatively common among medical students, and that most of them are moderately or highly stressed. We also found that the issue of stress is only rarely discussed with the teacher, or between students. Moreover, the existence of the “stress” factor and its poor management with students are directly correlated to academic performance.
Knowledge, attitude and practices towards plagiarism observed in undergraduate medical students at a teaching school in south east Asia
Authors: Agrawal Divya , Sagar Tamilisetti Vidya , Kachhawa Kamal , Kumar Sanjay
Published: January 2023

In a student academic learning process, process of plagiarism starts very early from preparation for assessment, followed by seminar presentation. This plagiaristic research practice knowingly or unknowingly gets inculcated in student as habit. Studies published on ethics in research practice until now are from developed nations where ethics in research is taught in undergraduate training itself. Aim of study is to investigate knowledge, attitude and practices towards plagiarism in undergraduate medical students at a teaching school in south East Asia.

We adopted cross sectional study design and study was done during February-April 2022 in a sample of 200 undergraduate medical students to assess knowledge, attitude and practices (KAP) towards plagiarism. All undergraduates (from 1 year to final year) of both genders were allowed to participate. Students not willing to be part of study were excluded. Validated questionnaire consisting of three sections addressing knowledge, attitude, and practice of plagiarism was utilized for assessment. Questionnaire consists of (a) Questions related to knowledge (b) Questions related to positive and negative attitudes towards plagiarism and (c) questions related to practice of plagiarism. Students were encouraged to fill all questions. These KAP Questionnaire forms were analysed after taking back from students and percentages were calculated. Data was analyzed by using Microsoft excel and Statistical Package for Social Sciences (SPSS) statistical software, version 16.

Out of 200 participants, 52% were females and 48% were males. Mean±SD age of participants is 18.7±2.6 years. Majority of students (80%) know aboutethical principles in research and practices of plagiarism. Half of students (50%) had experience with research and instances of plagiarism and some know problems they should encounter if they do plagiarism. 70% appropriately answered domains which include plagiarism, 65% answered appropriately practices that may be considered as plagiarism and 50% answered appropriately practices that may not be regarded as plagiarism and only 40% appropriately answered republishing one’s own previous works whether to be considered plagiarism or notResponse to practices of plagiarism is around 20 to 40%. Questions like whether self-plagiarism should be considered serious or not has same response.

This shows that majority of undergraduate medical students had knowledge regarding principles of ethics in research and problems they should encounter if they practice plagiarism. Majority have negative attitude towards plagiarism.
Trump and the Trumpists on the eve of the 2022 congressional elections
Authors: Antonov Evgeniy
Published: January 2023

The article examines the current political status of the former US President D. Trump, whose main intention after the defeat in the 2020 presidential elections is to ensure the confident victory of the Republican Party in the 2022 electoral race and strengthen his own position as an informal party leader. Additionally, the Democrats' line of actions to undermine the credibility of the non-systemic D. Trump in order to remove his candidacy from the American political life are considered.
Slovak-American Relations amidst the Global Crisis
Authors: Vedernikov Mikhail
Published: January 2023

The article examines the main events in Slovak-American relations in 2022. However, in order to understand the significance of this year in the bilateral contacts of NATO allies, in the first half of the work, the conceptual foreign policy documents of Slovakia are closely analyzed, which indicate the preservation of Russia's important place in foreign policy until recently for this Central European state. In this regard, the events of February 2022 had a significant impact on the final reformatting of Slovak diplomacy, the exclusion of Russia from the list of attractive partners.
The End of the U.S. Policy of “Strategic ambiguity” toward Taiwan?
Authors: Voloshina Anna
Published: January 2023

The article explores the meaning, the process of formation and the political foundation of the concept of “strategic ambiguity” in US policy towards the Taiwan issue. The author discusses whether the Biden administration has abandoned it in favor of “strategic clarity”. The paper analyzes the political and academic debate over the policy of “strategic ambiguity” and the implications of the American administration’s current policy for the U.S. interests in Asia.
Left Latin American governments in the US Foreign policy strategy: is the dialogue real?
Authors: Vorotnikova Tatiana
Published: January 2023

The article reviews foreign policy of the United States towards moderate left-wing governments of Latin American countries, including Colombia, Chile and Peru. Due to the mutual demand and intersection of interests, both sides are ready to build a constructive dialogue, while immense limitative factors still matter. Despite political differences, Washington has strong intention to activate bilateral cooperation on particular issues, and in those areas where Latin American partners demonstrate the will for the reciprocal steps.
The problem of abortion legalizing in the context of the electoral preferences of young Americans
Authors: Golovko-Okhremenko Aleksandra A.
Published: January 2023

U.S. Supreme Court decision on the Dobbs case have become the logical result of the US pro-life movement activity. Their search for allies has led to the rapprochement with the Republican party, which influenced the composition of Republican and Democratic electorate. Most young Americans are pro-choice, and they negatively perceived the cancellation of Roe vs Wade decision. As a result, Democrats expect to attract young voters of the swing states by pro-choice rhetoric.
Hispanic Americans in the 2022 midterm elections
Authors: Chernykh Marina
Published: January 2023

The article analyzes the factors that impact the role of Hispanic Americans in the 2022 elections. Comparative and discourse analysis, as well as the statistical and economic method, were applied. The article identifies reasons for their lower voter turnout compared to other racial-ethnic groups and the factors influencing its increase. Hispanic voters will shape the electoral trends of non-white America in the future. Among their group, there is a tendency to shift toward Republicans. The article discusses their key concerns and advantages of parties in these areas.