bluuebunny/crossref_metadata_2025 huggingface dataset:
Grzechy po włosku według Federica Felliniego. Rzymski tryptyk zatracenia i zanikanie świętości
Authors: Kolasińska-Pasterczyk Iwona
Published: February 2023

The text concerns the informal Roman triptych by Federico Fellini: Sweet Life (1960), The Temptation of Dr. Antonio (an episode from the film Boccaccio 70, 1962) and Rome (1972), which is a reverse of the “trilogy of redemption” of 1954–1957. Three of Fellini`s films (visions of Rome and its inhabitants) were treated as counterparts of the panels of painting triptychs, thus making up a whole that can be read both diachronically and synchronously. Read simultaneously, they form the Roman triptych of perdition diagnosing the disappearance of holiness. As in the painting triptychs, where the side panels are somewhat similar to each other and the central composition is a certain contrast to them (not denoting distinctiveness), in Sweet Life and Rome Fellini gave collective portraits (in the first only the social elite, in the second populus romanus), and in The Temptation of Dr. Antonio – a portrait of an individual (but still average Italian). The emphasis was placed on how, in each of the installments of the Roman triptych, Fellini diagnoses the condition of a culture that is declining (as a result of “sins in Italian”). The triptych is tied together the theme of corruption and the disappearance of holiness. Sweet Life is decadence (affecting the elite), Temptation… is a fight against one`s own demons (individuals), and Rome is a prophecy of the apocalypse. The interpretation was focused on how Fellini in these three films shows the desacralization of the world.
Poeta przed kompasem
Authors: Zieliński Jan
Published: February 2023

The paper discusses the importance of the motif of clocks and sundials in the biography of the Eighteens century poet Franiszek Dionizy Kniaźnin and shows various stages of an image – in subsequent Polish poetry and prose – of this poet, deranged in his late years, after the fall of the independent Poland, as he used to stand for hours in front of a sundial, staring at the movement of the shadow and contemplating the arrival of his own end as well. This presentation covers a period of more than 170 years.
Przyczynek do biografii twórczej Leona Wyczółkowskiego
Authors: Konik Roman
Published: February 2023

The article presents an appendix to the creative biography of the painter Leon Wyczółkowski, identifies the characters from the paintings under the conventional title Gra w krokieta These paintings, considered important in the biography of Leon Wyczółkowski, have been repeated as many as five times on the issue of the same title. Until now it was known that the painting was created at the Turobojscy estate in Korytnica, where Wyczółkowski visited many times, the latest research identifies the figures from the paintings and unambiguously indicates that the figures depicted in the paintings Game are Gabriela, Maria and Waleria Kurzewskie.
Księgi kostiumów jako interpretacja i symboliczna wykładnia świata w XVI-wiecznej Europie
Authors: Szymankiewicz Karolina
Published: February 2023

This article aims to present sixteenth-century costume books as a phenomenon that was one of the ways of getting to know the world in the modern era (both in micro and macro perspective), accompanied by emphasizing and even exaggerating features and elements of appearance considered to be characteristic of given societies. In order to characterize this phenomenon in detail, the genesis, function and reasons for the popularity of costume books are also given. The text also includes their interpretation in the broader context of socio-cultural changes taking place in 16th-century Europe – these collections of representations were the European visualization of time and space, however they did not reflect reality, but created the way the world was perceived by the use of non-obvious means. They made it possible to show in a compact collection a large number of images of representatives of various nations in clothes typical for a particular region of the world, in a way making it symbolically smaller and more accessible. For this reason, it is possible to point out analogies between the operation of costume books and Kunst- und Wunderkammer, which is emphasized in the article. Thus, these collections of representations can also be considered from the perspective of a specific kind of collecting – the collecting of human images (human types) through their appropriation. Therefore, one of the hypotheses presented in the article is to delineate the relationship between costume books and the centurieslong process of perpetuating the claim of colonialism in certain countries which took place not only in the political-economic sphere, but also in the field of visual arts.
What Is a Miracle?: An Attempt to Explain Miracles Scientifically through Quantum Mechanical Interpretation
Authors:   The Society of Theology and Thought, Kim Do-Hyun
Published: February 2023

We generally define a miracle as follows: miracles are surprising events that transcend everyday empirical facts, abnormalities that cannot be properly explained by the laws of nature and the principles of science, especially as a result of supernatural and mysterious actions. However, when a miracle is defined in this way, the miraculous ‘divine actions’ should be considered completely separate from all ‘natural actions’ in our nature/universe. Since both natural order/law and miracles are given to this world by God’s common divine actions, we need a new interpretation beyond such a complete separation of the two.
So now we may ask if we can find a single law/principle given by the same God and explain natural actions and transcendental divine actions as one comprehensive concept of ‘the divine actions’ by that law/principle. Therefore, if the natural order/law given by God the Creator in this nature/universe can be expanded to include miraculous divine actions, it will be possible to explain miracles through the ‘expanded natural order/law’.
This article attempts to expand the ‘principle of least action’, which has been accepted as the most important principle in existing physics, to include the ‘divine action’. In particular, I would like to show that the quantum version of the ‘principle of least divine action’ is the principle that allows even supernatural miracles to be explained. This article attempts to present a modern, scientific, and original interpretation of the concept of miracles through the introduction of the new principle.
The Virtue of Self-care and the Genealogy of Christian Marriage: Focusing on M. Foucault’s The History of Sexuality, Vol. 4: Confessions of the Flesh
Authors:   The Society of Theology and Thought, Lee Sang kyung , Choi Seong Uk
Published: February 2023

This article is to examine whether the Christian marriage can be a locus of ‘spiritual practice’ and virtue of ‘self-care’ development. The goal of this study is to trace the genealogical history of the Magisterial teachings on marriage, which has revealed how the value of ‘spiritual practice’ and the technology of ‘self-care’ have been developed, for the sake of one’s personal ‘salvation’. To do this, this study explores how Michel Foucault’s study of self-care can help to discuss the Magisterial teachings on marriage. Although Foucault has never dealt with the Christian marital doctrine, this study tries to discuss it genealogically, by using Foucault’s insights which analyze the fourth-century Christian Fathers’ theological statements of marriage. By using Foucault’s The History of Sexuality, Vol.4: the Confessions of the Flesh, as an analyzing lens, this study explores the subject of self-perception and of self-cultivation, which is the subject that Christian conjugal life has embraced for a long time. By comparing the Church Fathers’ theological statements about the marriage, in particular analyzing the sermons and writings of Chrysostomus and Augustinus in the fourth century, this study traces the history of using marriage as an art of renunciation for the sake of one’s salvation. This study finds these historical traces of marital art in the Documents of the Second Vatican Council, especially in the Gaudium et spes once again. Finally, this finds the same traces in Pope Francisco’s Amoris Laetitia in which marriage has been confirmed as a locus of the spiritual practice and the virtue development for the sake of cultivating self-reflection and personal fulfillment.
Creation, Natural nd Ontological Beginning.: Some Lessons from Georges Lemaître and Pierre Teilhard de Chardin
Authors:   The Society of Theology and Thought, Lambert Dominique
Published: February 2023

We clarify the philosophical notions implicitly present in Georges Lemaître’s cosmology. We first show that he carefully distinguished the theo-logical notion of creation and the physical concept of physical (natural) be-ginning of the universe. We study his first cosmological work which did not involve any question of beginning and end of the universe. Afterwards, we explain how such a question arose in his work concerning the “Primeval Atom Hypothesis”. Reflecting on the ontological and epistemological status of the “Primeval Atom” we are lead to the concept of ontological beginning, which cannot be confused neither with creation nor with natural beginning (now the Big Bang, the initial singularity if any). We then consider the crea-tion representation in the thought of Fr. Pierre Teilhard de Chardin. We ana-lyze the comparison made by Teilhard, in 1948, between his “Omega Point” and the “Primeval Atom”. This suggests us the need for a philosophical in-vestigation of the “Archê” of the universe which appears to be absent, but for different reasons, in Lemaître and Teilhard’s thought and works.
Constructing and Analyzing Competing Endogenous RNA Networks
Reveal Potential Biomarkers in Human Colorectal Cancer
Authors: Zhang Jing , Meng Xia , Deng Shanshan , Wang Wei
Published: February 2023

Background:

The role of the lncRNA-miRNA-mRNA competing endogenous RNA
network in human colorectal cancer remains largely unknown, and accurate prognostics still elude
us. This study aimed to identify differentially expressed mRNAs and lncRNAs between tumor and
normal samples, delineate their interactions and find reliable biomarkers.

Material and Methods:

We downloaded the RNA sequencing profiles and clinical information of
624 CRC patients from The Cancer Genome Atlas database. After expression difference analysis
and interaction prediction, we identified 37 miRNAs, 5 lncRNAs, and 93 mRNAs to construct the
ceRNA network (|log2 Fold Change| > 1, P-value < 0.05), and assessed relationships between them
and clinical characteristics by t-test, Spearman correlation analysis, and Kaplan-Meier curve analysis.
Besides, we validated PIGR and CD3D protein expression by immunohistochemistry staining.

Results:

PIGR and CD3D mRNAs showed a negative correlation with tumor stage and their protein
levels were lower in tumor tissues than in normal tissues. By survival analysis, MYC, F2RL2,
and GINS2 positively correlated with the overall survival of CRC patients.

Conclusion:

Our study provides a novel comprehension of lncRNA-related ceRNA network in CRC
and candidate molecules that serve as potential biomarkers of tumor stage and patient survival.
Paraquat and Parkinson’s Disease: The Molecular Crosstalk of Upstream
Signal Transduction Pathways Leading to Apoptosis
Authors: Chung See Wesley Zhi , Naidu Rakesh , Tang Kim San
Published: February 2023

Parkinson’s disease (PD) is a heterogeneous disease involving a complex interaction between
genes and the environment that affects various cellular pathways and neural networks. Several
studies have suggested that environmental factors such as exposure to herbicides, pesticides, heavy
metals, and other organic pollutants are significant risk factors for the development of PD. Among the
herbicides, paraquat has been commonly used, although it has been banned in many countries due to
its acute toxicity. Although the direct causational relationship between paraquat exposure and PD has
not been established, paraquat has been demonstrated to cause the degeneration of dopaminergic neurons
in the substantia nigra pars compacta. The underlying mechanisms of the dopaminergic lesion are
primarily driven by the generation of reactive oxygen species, decrease in antioxidant enzyme levels,
neuroinflammation, mitochondrial dysfunction, and ER stress, leading to a cascade of molecular crosstalks
that result in the initiation of apoptosis. This review critically analyses the crucial upstream molecular
pathways of the apoptotic cascade involved in paraquat neurotoxicity, including mitogenactivated
protein kinase (MAPK), phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K)/AKT,
mammalian target of rapamycin (mTOR), and Wnt/β-catenin signaling pathways.
A Review of Soft Crawling Robots with Different Driving Methods
Authors: Tang Dedong , Wang Gang , Tang Chunyang , Yu Wenzhuo , Lv Xin
Published: February 2023

Background:

Traditional rigid robots are difficult to adapt to complex unstructured environments
due to their limited degree of freedom and lack of flexibility. Therefore, soft crawling robots
are concerned widely by their powerful deformation ability, infinite number of degrees of freedom,
and effective interaction with humans.

Objective:

This paper aims to report the recent progress of soft crawling robots and provide a reference
for readers in this field.

Methods:

By reading and summarizing the patents and papers related to soft crawling robots in recent
years, they are divided into three categories according to different driving methods. The structure,
motion mechanism, characteristics, and applications of each class of robots are compared and
analyzed.

Results:

The advantages and disadvantages of each driving method are analyzed, and the key issues
in soft crawling robots are pointed out. Based on this, the future development direction of this research
field is predicted.

Conclusion:

The study shows that according to the driving method, soft crawling robots are classified
as pressure driven, motor-wire driven, and soft active material driven. In addition, the characteristics
of each drive are summarized. In the future, soft crawling robots will have more potential
applications in biomedicine, outdoor survey, rescue search, and inspection and maintenance of
equipment.
Problem-based learning combined with realistic mathematics approach grade V elementary school
Authors: Salmia Salmia , Sudarmin Sudarmin , Mujahidah Mujahidah
Published: February 2023

The study aimed to determine student learning outcomes with problem-based learning through a realistic mathematical approach in mathematics subjects for class V students. This type of research was quasi-experimental because in this study, no specific treatment (treatment) was given, but only revealed the symptoms that had been reported. It existed at the time this research was conducted, so there was no direct control over the independent variables. Data collection methods used are learning outcomes tests and documentation. The data analysis technique is the first using a descriptive statistical approach and paired sample test. The results showed that learning mathematics using problem-based learning through a realistic mathematics approach obtained an average of 80.00 students' mathematics learning outcomes, with students in the medium category with a percentage of 100%. The average normalized gain of 0.29 was convection into high, medium, and low categories, so the average normalized gain of students was in the medium category. This means that problem-based learning combined with a realistic mathematical approach to learning outcomes for fifth-grade students is in the medium category. The significance value of Asiymp. Sig. (2-tailed) is 0.09, which is greater than 0.05. Then according to the basis of decision-making in the Kolmogorov-Smirnov normality test above, it can be concluded that the data are normally distributed. Thus, the assumptions or requirements for normality distributed data in the regression model have been met.
Foot Care Behaviour among Patients with Type 2 Diabetes Mellitus in Malaysia: A cross-sectional study
Authors: Md Jazli Norazlina , Abd Kadir Nadia , Mat Zam Rosehaidza , Chong Mei Sin
Published: February 2023

Diabetic foot complications result in morbidity and lower extremity amputation. Our cross-sectional study aimed to assess the foot care behaviour among patients with type 2 diabetes mellitus. More than half of the participants (56.2%) reported a low level of foot care behaviour. Gender and educational level were significantly associated with foot care behaviour (p < 0.05). This study provides an overview of the current foot care behaviour in a multi-ethnic population in Southeast Asia. Future studies with rigorous methods are needed to examine the factors associated with the foot care behaviour among patients with type 2 diabetes mellitus.
Preservative Lubricants and Oils Used to Protect Equipment Products
Authors: Lavrushin A. V. , Starikov N. E. , Naumenko I. S. , Kutepov S. N. , Gvozdev A. Y. , Ageev E. V.
Published: February 2023

Purpose of research. Analysis of preservation agents for the protection of technical products to determine the direction for the modification of preservation materials.Methods. To achieve this goal, we have reviewed the modern scientific and technical literature in this area. The conservation method using lubricants is used to maintain the stored products in working order and use them as intended,. Lubricants for various purposes are usually subdivided into lubricants, oils and specialty liquids.Results. The currently used preservatives not only fails to provide reliable protection of the materials of products, but in most cases they themselves are power sources for microorganisms, provoking the development of microbiological and corrosive damage. One of the new directions in the modification of preservation materials is the use of alternative sources for modification based on plant origin materials (essential oils). The conducted analysis shows that many of the foreseen means of conservation are not produced for objective reasons, and the use of other means is often ineffective. The solution to this problem is associated with the use of essential oils for modifying existing preservation materials. which should increase their protective properties against the effects of biodegradable microorganisms, and, as a result, create effective protection against corrosion and biological damage. Conclusion. The presented results can be used to create resource-saving processing processes, frictional interaction, storage and preservation of metal systems, taking into account the operating conditions of a particular part for various weather conditions.
Mathematical Modeling of Human Gait in a Rehabilitation Exoskeleton Using Gait Video Analysis Method
Authors: Pechurin A. , Fedorov A. V. , Yatsun A. S. , Jatsun S. F.
Published: February 2023

Purpose of research One of the ways to increase effectiveness of rehabilitation systems for patients with musculoskeletal disorders is the use of exoskeletons, which make it possible to ensure lower limbs movement according to the laws close to natural gait set by the rehabilitation therapist. The article considers a method based on construction of ankle joint motion trajectories (AJ) followed by synchronous determination of rotation angles of lower limb links based on numerical solution of inverse kinematics problem. It is known that the use of simplified laws of ancle joint movement and feet without taking into account anthropometric parameters of a patient leads to the formation of an incorrect gait and, as a result, a significant increase in rehabilitation time of a patient. Therefore, when constructing mathematical model of ankle motion patterns, it is proposed to use the method of video capture of marker points selected on AJ and foot, followed by processing and approximation of received signals using polynomials, which provides high accuracy of reproducing motion patterns. Purpose of research is to build motion laws of exoskeleton links along the trajectory of AJ motion based on a numerical solution of inverse kinematics problem.Methods. Experimental walking studies with the construction of AJ motion trajectory based on video fragment, smoothing and approximation of this trajectory and solving reverse kinematics problem are used to achive this goal.Results. Method for construction and processing of foot motion trajectory and finding kinematic characteristics of links motion for creation of exoskeleton motion patterns in gait is introduced.Conclusion. Simulation results shows that proposed methods of constructing motion trajectory and gait modeling of the exoskeleton make it possible to copy the gait of a person with high accuracy in rehabilitation process.
Organization of Industrial Construction of Nuclear Power Plants in the Global Market, Taking into Account Reliability Modeling at Pre-investment Stages
Authors: Berezka V. V. , Baronin S. A. , Bredikhin V. V. , Zobnev A. V.
Published: February 2023

The problems of managing the organizational reliability of the pre-investment phase of the industrial construction of nuclear power plants in global markets have been investigated. The relevance of the topic is determined by the great uncertainty in the implementation of international investment projects of nuclear power plants. This is confirmed by the facts of construction delays and an increase in costs by more than 60% of nuclear reactors under construction in the world.Purpose of research: development of methodological approaches and practical recommendations for modeling and integrated management of organizational reliability indicators of industrial construction of nuclear power plants in the global market at pre-investment stages.Methods: a set of systematic methodological approaches based on methods of comparison, analysis, synthesis, modeling, forecasting, expert assessments, mathematical statistics, economic and mathematical modeling, factorial, situational and retrospective analysis, scenario method, morphological and logical analysis.Results: the author's methodology for modeling organizational reliability and the structure of the life cycle of industrial construction of nuclear power plants; features and development trends of this type of industrial construction; recommendations in the field of industrial construction organization to increase the reliability of NPP construction based on a controlled factor space and multi-criteria optimization of calendar schedules.Conclusion. The studies performed have confirmed the relevance of studying the subject of research associated with solving the problem of increasing the organizational reliability of industrial construction of nuclear power plants in global markets, formed and managed at the pre-investment stages of planning these types of investment projects. At the same time, the main result of these studies can be considered as an increase in the competitiveness of the Russian divisions of Rosatom State Corporation in the international market with an increase in its current share of 26% (130 billion US dollars) to 40-50% for the period up to 2035.
Design and Engineering Support of the Process of Deep Drilling of Heat-resistant Steel
Authors: Yatsun E. I. , Mogilev S. N.
Published: February 2023

Purpose of research. To attain the specified parameters of deep drilling accuracy by creating design and engineering support for the deep drilling process corresponding to the current level of technical and technological development.

Methods. Analysis of machine tools and tool systems for drilling deep holes based on the monitoring of the conditions of machinery, equipment, cutting tools and tooling market of leading domestic and global manufacturers. Synthesis of a process system that ensures the creation of a product that meets the world level of quality with maximum process performance.

Results. The design and engineering support of the process of deep drilling of high-alloy heat–resistant steel using modern equipment with a high-performance tool - a gun drill, was created. The equipment for the deep drilling process – an anti-vibration rest, an oil receiver, a clamping chuck, a guide bush are proposed. The conditions for the control of flow chips formed during deep drilling with a gun drill and its removal from the processing zone with a cooling mixture are determined.

Conclusion. On the basis of the tooling for deep drilling of heat-resistant steel, the possibilities of using both existing at enterprises equipment and modern but expensive equipment, taking into account the series production, are shown. Both of these ways make it possible to ensure the specified accuracy and roughness of processing.

To implement the deep drilling process, it is required to design a special tool - a gun drill, taking into account the properties of the material being processed. When implementing the deep drilling process applying specialized equipment, the machining pattern is provided by the tooling of the machine. When implementing the process applying universal equipment, the selected machining pattern is connected with the design and manufacture of the tooling – a clamping chuck, an oil receiver, a guide bush. These tasks are implemented in two ways: by the specialists of the enterprise or involving third-party specialized organizations to design attachments and cutting tools. The choice of the way to implement the deep drilling process depends on the availability of equipment, the size of the batch of parts and technical and economic assessment.
A Technique of the Distributed Information Systems Control Method Choice under the High Network Dynamics Conditions
Authors: Klimenko A. B.
Published: February 2023

Purpose of research. The purpose of this study is to select a method for managing a distributed system, which, based on known parameters, would reduce the consumption of resources of computing devices. The resource of an information system is understood as the probability of failure-free operation (reliability function), which degrades over time for each node, the faster, the higher its workload.Methods. Considering that with high dynamics of the edge layer of the network, the frequency of system reconfigurations becomes relatively high, and the need for reconfigurations is unpredictable, reducing the total time spent on reconfigurations makes it possible to increase the time spent on solving functional computational problems of the system and thereby reduce the load of nodes. The reconfiguration time can be reduced both by reducing the time for detecting a failure in a distributed system, and by reducing the new configuration forming time. In this paper, a method for reducing the time of the failure detection is considered. The analysis of the applicability of system control methods (centralized, with a distributed leader, decentralized) is based on the obtained analytical estimates of the time the system detects a failure under control conditions using one method or another. A numerical experiment makes it possible to identify areas of system parameters, where it is preferable to use the method with a distributed leader.Results. The main result of this work is a methodology for choosing a method for managing distributed information systems in conditions of high dynamics of the network infrastructure, focused on reducing the consumption of resources of computing devices.Conclusion. System reconfiguration time can be shortened by choosing the most appropriate control method. Thus, the time allotted for solving the functional tasks of the application increases, the workload of the computational nodes decreases, and, therefore, the FBG values increase over the planning horizon.
Virtual Interface Technology in the Process of Simulation of Complex Functional Modules of Control Systems for Industrial Robots and Multi-Axis Mechatronic Systems
Authors: Zelensky A. A. , Zhdanova M. M. , Abdullin T. Kh. , Voronin V. V.
Published: February 2023

Purpose of research. Development of a tool for debugging intelligent control system algorithms, including the development of a vision system and planning a software trajectory for an industrial robot.Methods. To achieve this goal, a review of existing simulation tools was carried out. A protocol of contactless humanrobot interaction is presented. An algorithm for the recognition of gesture commands based on the difference of three-dimensional binary microblocks and the construction of the skeleton of the human body has been developed. An example of using the ROBOGuid software tool for imitating the motion of an industrial robot in the development and debugging of its own control methods focused on real objects is presented.Results. The use of digital twins of technological equipment to simulate and display real technological processes in a virtual environment, in the context of the formation of a new concept of Industry 4.0 and the sixth technological order, allows improving the main and auxiliary production processes, as well as analyzing, researching and evaluating the economic efficiency of new technological and technical solutions. Simulation allows the development of ergonomic ways of human interaction with mechatronic objects. The solution proposed in the work was tested on the example of working out a complex spatial contour that simulates the milling of a part. Experimental studies of the gesture command recognition algorithm proposed in the work were carried out on the publicly available UCF101 dataset, the results are compared with known approaches to recognizing human actions.Conclusion. The developed interface module was used on the example of working out a complex spatial contour that simulates the milling of a part, and the method of a contactless robot control system has shown its effectiveness and the need to develop this direction.
Methodology for Determining Deviations of Pilotless Aircraft from a Given Trajectory by Parallaxes of Underlying Surface Images
Authors: Andronov V. G. , Chuev A. A. , Yudin I. S.
Published: February 2023

Purpose of research. Development of a methodology for determining deviations of pilotless aircrafts from a given trajectory in conditions of signals loss from navigation satellites.

Methods. The technique is based on functional relationship between deviation parameters of pilotless aircrafts from a given trajectory and changes in longitudinal and transverse parallaxes of overlapping images of the underlying surface due to these deviations. Mathematical description of computational procedures for deviation parameters determination used methods of functions approximation and mathematical processing of measurement results with accuracy estimation of obtained results.

Results. A methodology that includes monitoring, assessing the level and determining the magnitude and direction of deviations of pilotless aircrafts from a given trajectory was developed. A system of nonlinear equations describing functional relationship between deviation parameters and changes in parallax of overlapping images of the underlying surface is obtained. Linearization, normalization and solutions of this system of equations by the least squares method were performed. Analytical relations were obtained for a posterior accuracy assessment of the obtained results.

Conclusion. The technique provides parameters detection and determination of uncoordinated deviations of pilotless aircrafts from a given trajectory with an accuracy commensurate with satellite navigation methods. The proposed approach makes it possible to reduce the number of processed corresponding points in overlapping images and the dimension of the problem being solved in comparison with known methods. This significantly reduces the level of computational and resource costs, which is of great importance for the use of developed technique on the board of miniature pilotless aircrafts.
Development of the Layout of the Experimental Setup for Determining the Stiffness Coefficient of Cylindrical Springs and Studying Free Harmonic Oscillations
Authors: Politov E. N. , Rukavitsyn A. N. , Lomas Arciniega W, P. , Terán Acosta G. R. , Ávalos Cascante F. E. , Puebla Puebla R. E.
Published: February 2023

Purpose of research. Is to develop a layout of an experimental setup that allows conducting research with elastic elements by exercising a force impact on them as well as automatic data collection and analysis, which allows determining the stiffness coefficient and investigating simple harmonic oscillations.

Methods. The developed device makes it possible to determine elasticity coefficient of the spring applying two methods – static and dynamic. The dynamic method requires strict adherence to a certain procedure of experimental stydy. In this case, the system under study is under the action of a restoring force directly proportional to the displacement, i.e. it is a simple generator of harmonic oscillations. The prototype of the experimental setup being created includes a supporting structure, a control system to which an ultrasonic distance measurement sensor is connected, and a special mobile application that allows visualizing and recording the results of measurements in a user-friendly form.

Results. The developed prototype makes it possible to determine spring deformation by static and dynamic methods; the presence of a special mobile application for devices with the Android operating system allows the user to control the device from his mobile phone. The experimental device allows visualizing the obtained data graphically and export them to a file of variable values. Exported values are displayed in tabular form for further processing using statistical tools or numerical computing applications.

Conclusion. To improve the quality of the educational and training process of physics students it is necessary to introduce special equipment for experimental research into the educational process. Such equipment can be applied in the studies conducted in various sections of mechanics, including kinematics, oscillatory motion, impact, elasticity, etc.
Short-Term Forecasting of Power Consumption of Power Supply Companies Based on the Integration of Technologies of Analytical, Simulation and Expert Systems
Authors: Mektepkaliyeva A. K. , Khanova A. A. , Aminul L. B.
Published: February 2023

Purpose of research is to improve software support and identify regularities in the processes of short-term forecasting of power consumption of power supply companies based on complementary integration of data mining models, system dynamics and expert systems.

Methods. The principles of constructing predictive models of power consumption are given. A system analysis has been carried out and an ontological model of the subject area has been built, taking into account the technological and market environment. The classification of forecasting methods has been considered. The features of the information base for short-term forecasting, including data on actual power consumption and weather data, have been described. The requirements for software for making forecasts have been formulated. A block diagram of the system for forecasting power consumption of the market for the day ahead is built based on the complementary integration of data analysis and modeling software.

Results. Scenarios for data processing in Loginom have been developed using the Arimax and Neural Network (Regression) processors to build forecasts based on actual power consumption and taking into account meteorological factors. A system dynamics simulation model that allows exploring the influence of meteorological factors (temperature, pressure, precipitation) on power consumption has been developed in Anylogic. Using Wi!Mi mivar constructor of expert systems, the task has been parametrized; indicators, relationships, rules have been set; a logical conclusion of the solution has been obtained.

Conclusion. A block diagram of a system for forecasting the market's power consumption for the day ahead has been built. It is based on the analysis of retrospective information on actual power consumption and meteorological factors using data mining methods, system dynamics and expert systems applying Russian Loginom, Anylogic and Wi!Mi software tools.
The Study of Intelligent Control Elements of a Mobile Robot and Ensuring Information Security of the Process of Its Functioning in a Dynamic Environment
Authors: Makarov M. V. , Astafiev A. V. , Semenov I. A.
Published: February 2023

Purpose of research. The study presented in this article is aimed at establishing and substantiating the principles of effective incorporation of intelligent elements of the control system of a mobile robot operating in a dynamic environment. The subject of the study was the procedure of simultaneous localization and mapping involved in the control. Indicators related to ensuring the information security of the process of robot functioning in real operating conditions were used as the performance criterion.

Methods. A methodology for the experimental study of the software procedure execution for simultaneous localization and mapping within the framework of the task of controlling a mobile robot has been developed and implemented. The main focus of the study is a computer model of an abstract mobile robot performing reconnaissance functions in a virtual dynamic environment. The incorporated elements of intelligent information processing into the procedure of simultaneous localization and mapping are convolutional and fully connected neural network layers that provide filtering of dynamic objects.

Results. When conducting this experimental study, a simulation of the process of functioning of a computer model of a reconnaissance mobile robot in a virtual environment has been performed. Similar experiments have been reproduced with various structural and functional configurations of the procedure for simultaneous localization and mapping. Quantitative results have been obtained, demonstrating the accuracy of positioning the subject of the study for each of the methods of organizing this procedure. A comparative analysis of the options for using the elements of intelligent information processing within this procedure has been carried out.

Conclusion. It has been established that incorporation of the elements of intelligent information processing into the procedure of simultaneous localization and mapping has an impact on the positioning accuracy of a mobile robot and the reliability of its functioning in a dynamic environment. This contributes to the compliance with information security standards when using mobile robots in real operating conditions. It is also determined that there is their excessive use, which leads to a deviation from the optimal qualities necessary for effective autonomous control of a mobile robot and information security provision.
Maternal Coping Mechanism and Its Associated Factors Following Perinatal Loss in Hospitals of Wolaita Zone, South Ethiopia 2021
Authors: Yeshambel Addisu , Alene Tamiru , Asmare Getachew , Asnake Gedion , Anmut Wallilign , Abebe Kelemu , Birhan Belete
Published: February 2023

Perinatal loss is the most painful and unanticipated experience for those who conceived and it is a major global concern worldwide, especially in developed countries like Ethiopia. Women who lost their pregnancy are believed to be at higher risk of developing severe grief following a loss. To reduce the risk of complications after perinatal loss, healthcare providers need to appreciate the grieving process and identify grief factors in mothers for early copying and to be managed promptly by providing adequate emotional, social, and psychological support. This study aimed to assess the level of maternal coping mechanisms and associated factors following perinatal loss in Hospitals of Wolaita Zone, Ethiopia, 2021. A hospital-based cross-sectional study design was conducted from June 30/2021-August15/2021. Study participants were selected through systematic random sampling. Epi-data manager version 4.6 was used for template preparation and data entry and SPSS version 25 was used for analysis. Logistic regression was employed. The strength of association was declared at a p-value < 0.05 with 95% CI. Out of the total 393 participants, 51.4% had positive coping mechanisms whereas the rest, 48.6% had a poor coping mechanism following perinatal loss. Participants who have been satisfied with marriage (AOR = 5.64, 95% CI(3.10-10.29)), history of Antenatal care(ANC) follow-up(AOR = 2.52, 95% CI(1.39-4.57)), profession-based support(AOR = 2.91, 95% CI(1.64-5.15)), support from their own spiritual belief (AOR = 3.87, 95% CI(2.33-6.43)), support from their parents(AOR = 8.11, 95% CI(3.94-16.69)), support from their husband(AOR = 3.2, 95% CI (1.74-5.89)) and discussed/received information from those who had a history of loss(AOR = 2.65, 95% CI (1.31-5.32)) were some of the factors associated with positive maternal copying following perinatal loss. Maternal coping following the perinatal loss was relatively low. Thus, healthcare providers need to be more cautious and ensure mothers receive adequate care, and giving adequate emotional, social, and psychological support for them during grieving moments is essential.
COVID-19 Response Resource Engagement and User Characteristics of the Wichealth Web-Based Nutrition Education System: Comparative Cross-sectional Study
Authors: Brusk John J , Bensley Robert J
Published: February 2023

Background

In response to the COVID-19 pandemic, Wichealth launched 4 information resources on the site’s user landing dashboard page. These resources were used consistently during the period in which they were available (April 1, 2020, through October 31, 2021); however, only 9% (n=50,888) of Wichealth users eligible for inclusion in the study accessed at least one resource. User engagement with emergency response resources within the context of a web-based health educational tool has not been well investigated due to a paucity of opportunities and a lack of the ability to evaluate relevant users at scale.

Objective

This investigation was carried out to understand if user characteristics and behaviors measured by the Wichealth web-based education system are associated with a participant's motivation, or lack thereof, to engage with the added COVID-19 resources.

Methods

Sociodemographic characteristics were gathered from Wichealth users with at least one lesson completed and a complete user profile to identify which factors increase the likelihood of user access of any of the Wichealth COVID-19 response resources during the 19-month period between April 1, 2020, and October 31, 2021. A logistic regression analysis was conducted to determine the relative importance of all factors on the likelihood of a user accessing the COVID-19 resources.

Results

A total of 50,888 unique Wichealth users included in the study accessed the COVID-19 response resources 66,849 times during the time period. During the same period, 510,939 unique Wichealth users completed at least one lesson about how to engage in healthy behaviors with respect to parent-child feeding but did not access any COVID-19 resources. Therefore, only 9% of Wichealth users who completed a lesson during the time when COVID-19 response resources were available accessed any of the information in those resources. Users of the Spanish language Wichealth version, older users, those less educated, and users with prior Wichealth lesson engagement demonstrated the greatest likelihood of COVID-19 resource use.

Conclusions

This investigation presents findings that demonstrate significant differences between Wichealth users that opted to access COVID-19–specific resources and those who chose not to during their web-based educational session. Reaching users of a web-based educational system with supplemental information may require multiple strategies to increase coverage and ensure the widest possible distribution.
Classifying COVID-19 Patients From Chest X-ray Images Using Hybrid Machine Learning Techniques: Development and Evaluation
Authors: Phumkuea Thanakorn , Wongsirichot Thakerng , Damkliang Kasikrit , Navasakulpong Asma
Published: February 2023

Background

The COVID-19 pandemic has raised global concern, with moderate to severe cases displaying lung inflammation and respiratory failure. Chest x-ray (CXR) imaging is crucial for diagnosis and is usually interpreted by experienced medical specialists. Machine learning has been applied with acceptable accuracy, but computational efficiency has received less attention.

Objective

We introduced a novel hybrid machine learning model to accurately classify COVID-19, non-COVID-19, and healthy patients from CXR images with reduced computational time and promising results. Our proposed model was thoroughly evaluated and compared with existing models.

Methods

A retrospective study was conducted to analyze 5 public data sets containing 4200 CXR images using machine learning techniques including decision trees, support vector machines, and neural networks. The images were preprocessed to undergo image segmentation, enhancement, and feature extraction. The best performing machine learning technique was selected and combined into a multilayer hybrid classification model for COVID-19 (MLHC-COVID-19). The model consisted of 2 layers. The first layer was designed to differentiate healthy individuals from infected patients, while the second layer aimed to classify COVID-19 and non-COVID-19 patients.

Results

The MLHC-COVID-19 model was trained and evaluated on unseen COVID-19 CXR images, achieving reasonably high accuracy and F measures of 0.962 and 0.962, respectively. These results show the effectiveness of the MLHC-COVID-19 in classifying COVID-19 CXR images, with improved accuracy and a reduction in interpretation time. The model was also embedded into a web-based MLHC-COVID-19 computer-aided diagnosis system, which was made publicly available.

Conclusions

The study found that the MLHC-COVID-19 model effectively differentiated CXR images of COVID-19 patients from those of healthy and non-COVID-19 individuals. It outperformed other state-of-the-art deep learning techniques and showed promising results. These results suggest that the MLHC-COVID-19 model could have been instrumental in early detection and diagnosis of COVID-19 patients, thus playing a significant role in controlling and managing the pandemic. Although the pandemic has slowed down, this model can be adapted and utilized for future similar situations. The model was also integrated into a publicly accessible web-based computer-aided diagnosis system.
The Metaverse, the Built Environment, and Public Health: Opportunities and Uncertainties
Authors: Koohsari Mohammad Javad , McCormack Gavin R , Nakaya Tomoki , Yasunaga Akitomo , Fuller Daniel , Nagai Yukari , Oka Koichiro
Published: February 2023

There has been a growing interest in the “metaverse,” and discourse about how this platform may contribute to different fields of science is already beginning to emerge. In this paper, we discuss key opportunities and uncertainties about how a metaverse might contribute to advancing knowledge in the interdisciplinary field of the built environment and public health aimed at reducing noncommunicable diseases.