bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of Emotional Intelligence on the Relationship Between Individual and Contextual Factors on the Quality of Internal Auditing in Federal Educational Institutions in Brazil
Authors: Moura Cristiane Silva , Imoniana Joshua Onome , Santos Edicreia , Santos Luiz Miguel Renda
Published: July 2022

This research investigated the effects of individual and contextual factors on the quality of internal audit moderated by emotional intelligence. The research was operationalized from a research instrument consisting of 39 questions, answered by 93 internal auditors from Federal Educational Institutions in Brazil. Descriptive statistics and Structural Equation Modeling were applied. Results showed that individual factors positively and significantly affect the quality of the audit. The work resources, although considered important, did not influence the quality of the audit, unlike the contextual factor of time budget pressure, which affects it positively and significantly. Regarding the moderation of emotional intelligence in individual factors and contextual factors, this was not supported. Thus, concerning the originality, research on the influence of emotional intelligence on the results of the work of the internal auditor is recent in the literatures, this study therefore, boosts the ex ante sources and also support the regulating bodies and practitioners.  Finally, as a suggestion for future research, it is recommended that the studies reach the population not investigated in this study, being internal auditors from other sectors of the economy, external auditors or even auditors from the private sector.
Millettia sirindhorniana and M. tomentosa, two new species of Millettia (Fabaceae: Millettieae) for Thailand
Authors:   Department of Biology, Faculty of Science, Udon Thani Rajabhat University, Udon Thani 41000, Thailand., Mattapha Sawai , Suddee Somran ,   Forest Herbarium, Department of National Parks, Wildlife and Plant Conservation, 61 Phahonyothin Road, Ladyao, Chatuchak,  Bangkok 10900, Thailand, Tetsana Naiyana ,   Forest Herbarium, Department of National Parks, Wildlife and Plant Conservation, 61 Phahonyothin Road, Ladyao, Chatuchak,  Bangkok 10900, Thailand, Thananthaisong Theerawat ,   Forest Herbarium, Department of National Parks, Wildlife and Plant Conservation, 61 Phahonyothin Road, Ladyao, Chatuchak,  Bangkok 10900, Thailand, Kaewmuan Anusara ,   Forest Herbarium, Department of National Parks, Wildlife and Plant Conservation, 61 Phahonyothin Road, Ladyao, Chatuchak,  Bangkok 10900, Thailand
Published: July 2022

Two new species of the genus Millettia, M. sirindhorniana and M. tomentosa, are herein described and illustrated. Millettia sirindhorniana shares morphological characteristics with M. extensa and M. fruticosa in being a woody climber with the same leaflet shape and inflorescence type. However, it differs from those species by the presence of stipels and basal callosities, and its shallowly crenate floral disk. Millettia tomentosa is similar to M. extensa and M. suddeei, but differs from the first species by having a brachyblast bearing ca 10 flowers, the standard with basal callosities, presence of a tubular floral disk and oblong to slightly obovate fruits; and it differs from the latter by the absence of stipels, the standard with swollen basal callosities, monadelphous stamens and the tubular floral disc. Descriptions, illustrations, colour plates, vernacular names, etymology, conservation status and key diagnostic characteristics are provided.
Internet of Things and Blockchain-Based Framework for Coronavirus (COVID-19) Disease
Authors: Alam Tanweer , Benaida Mohamed
Published: July 2022

The COVID-19 is an exponentially growing disease that has intentioned nations to use technologies to detect the coronavirus infection. Several nations are working greatly to fight against COVID-19. Many nations have been using a range of devices to combat the pandemic, seeking information about growth, monitoring as well as the leaking the confidential information of the residents. This research aims to assist infected people online using the Internet of Things (IoT) and Blockchain technologies through smart devices. IoT-based healthcare devices gather useful information, provide additional insight through symptoms and behaviors, allow remote monitoring, and simply give people better self - determination and healthcare. Blockchain allows the secure transfer of patient health information, regulates the medical distribution network. A four-layer architecture is proposed using IoT and Blockchain to detect and prevent individuals to be COVID 19. This research provides a framework for patients with COVID-19 infectious disease and recognizes health issues and diagnoses online. Smart devices such as smartphones can install any mobile apps such as Aarogya Setu, Tawakkalna, and so on. These applications can track COVID-19 patients properly. The installation of mobile apps on smart devices focuses to reduce the time and cost and increase the performance of the infectious patient's condition. A four-layer architecture is proposed using IoT and Blockchain technologies. Many research works focus on investigating, analyzing, and highlighting the affected individuals through guiding the COVID-19 infection. Eventually, various mobile apps are recognized and addressed in this paper.
Pros and Cons of Telemedicine—Implications in Cardiology and Cardiovascular Medicine
Authors: Gerges Sarah , Hallit Souheil
Published: July 2022

The COVID-19 pandemic has highlighted the vitalness of telehealth in our medical world, where considering a restructuring of healthcare services has become paramount. In fact, telemedicine has recently earned a valuable place in many specialties; and its implications in cardiology and cardiovascular medicine were among the leading interests. In this letter, we gathered previous evidence supporting the merit of telemedicine in the fields of cardiology and cardiovascular medicine—medical branches in which patients require meticulous care and continuous monitoring—as well as protrusions of concerns about the uncertainty regarding the efficacy of telemedicine’s future implications and technologies. In sum, in the context of this still on-going pandemic, medical institutions must strive to improve telehealth technologies and implement solid future research directions in this growing field—to be able to persevere in meeting the needs of the patients. As long as no conclusive evidence exists regarding the fields where telemedicine is most worthwhile, healthcare systems will always keep the dread of wasting resources on developing ineffective programs. We conclude that telemedicine has been attributed a considerable attention in managing cardiac and cardiovascular conditions; nevertheless, further studies with solid designs are still needed to confirm its validity and utility in those specialties.
Potential Properties of Natural Nutraceuticals and Antioxidants in Eye Protection
Authors: Maiuolo Jessica , Bulotta Rosamaria , Oppedisano Francesca , Musolino Vincenzo , Gliozzi Micaela , Carresi Cristina , Scarano Federica , Nucera Saverio , Scicchitano Miriam , Nicita Martina , Caminiti Rosamaria , Bosco Francesca , Macrì Roberta , Carnevali Adriano , Scorcia Vincenzo , Mollace Vincenzo
Published: July 2022

Abstract Eye health is crucial and the onset of diseases can reduce vision and affect the quality of life of patients. The main causes of progressive and irreversible vision loss include various pathologies such as cataracts, ocular atrophy, corneal opacity, age-related macular degeneration, uncorrected refractive error, posterior capsular opacification, uveitis, glaucoma, diabetic retinopathy, retinal detachment, undetermined disease and other disorders involving oxidative stress and inflammation. The eyes are constantly exposed to the external environment and, for this reason, must be protected from damage from the outside. Many drugs, including cortisonics and antinflammatory drugs have widely been used to counteract eye disorders. However, recent advances have been obtained via supplementation of patients with natural antioxidants and nutraceuticals. In particular, evidence has been accumulated that polyphenols (mostly deriving from Citrus Bergamia) represent a reliable source of antioxidants able to counteract oxidative stress accompanying early stages of eye diseases. Luteolin, in particular, has been found to protect foto-receptors thereby improving vision in many disease states. Moreover, a consistent anti-inflammatory response was found to occur when curcumin is used alone or in combination with other nutraceuticals. On the other hand, CoQ10 has been demonstrated to produce consistent effect in reducing ocular pressure thereby leding to protection in patients undergoing glaucoma. Finally, both grape seed extract rich in anthocyanosides and polynsatured fatty acids (PUFAs) seem to contribute in the prevention of retinal disorders. Thus, combination of nutraceuticals and anti-oxidants may represent the right solution for a multiaction activity in eye protection to be associated to current drug therapies, and this will be of potential interest in early stages of eye disorders.
Modeling Crop Production under Climate Change in Southeast Nigeria: Agroecology as a Response
Authors: Ume Chukwuma , Onah Tochukwu , Ume Sunny , Onah Ogochukwu , Opata Patience , Idika Ezinne Orie , Felix Kalu
Published: July 2022

Nations of the world have seen unprecedented changes in climate variables in recent decades. But it is unclear to what extent climate change has impacted and will impact food systems in some developing regions, and how policymakers can frame an approach to encouraging adaptation and advancing climate-smart agriculture. Many studies attempting to link agroecology to climate change adaptation do so without understanding the potential of Agroecology not only to mitigate climate change – which is the weak response – but to reverse its impact and ‘climate proof’ our food systems. By modeling the near and far future impacts of climate change on crop production, we showed how climate will impact crop production under two crop production systems (agroecology and non-agroecology production systems). The overarching aim is to derive sustainable development strategies and lessons for policymakers and climate researchers - essential components of environment and Agricultural development. Using case studies from Nigeria, we observed that transitioning to agroecology, even at the farm level also transforms farm designs, thereby affecting their overall food and nutrition status. The result showed that the use of agroecology management practices not only reduces the impact of climate change in the near future but will also lead to increased crop yield in the future. The finding suggests that to feed the over 400 million projected population of Nigeria by 2050, the use of agroecological practices will be a better alternative to the conventional farming methods. To advance the use of agroecological farming methods, governments at every level in Nigeria need to mainstream organic agriculture in national government policies. This is important as it will not only address climate change impacts but also hunger and poverty.
A Fish of Multiple Faces, which Show us Enigmatic and Incredible Phenomena in Nature: Biology and Cytogenetics of the Genus Carassius
Authors: Knytl Martin , Forsythe Adrian , Kalous Lukáš
Published: July 2022

Sexual vs asexual reproduction—unisexual vs bisexual populations—diploid vs polyploid biotypes—genetic vs environmental sex determination: all these natural phenomena are associated with the genus of teleost fish, Carassius. Two Carassius entities with completely different biological characteristics exist: one globally widespread and invasive Carassius gibelio, and the other C. carassius with decreasing trend of natural occurrence. Comprehensive biological and cytogenetic knowledge of both entities, including the physical interactions between them, can help to balance advantages of highly invasive and disadvantages of threatened species. For example, benefits of a wide-ranged colonization can lead toward extinction of native species or be compensated by parasitic enemies and lead to equilibrium. This review emphasizes the comprehensive biology and cytogenetic knowledge and importance of the Carassius genus as one of the most useful experimental vertebrate models for evolutionary biology and genetics. Secondly, the review points out that effective molecular cytogenetics should be used for identification of various species, ploidy levels, and hybrids. The proposed investigation of these hallmark characteristics in Carassius may be applied in conservation efforts to sustain threatened populations in their native ranges. Also, the review focuses on consequences of co-occurrence of native and non-native species and outlines future perspectives of Carassius research.
Mitochondrial Impairment: A Common Motif in Neuropsychiatric Presentation? The Link to the Tryptophan-Kynurenine Metabolic System
Authors: Tanaka Masaru , Szabó Ágnes , Spekker Eleonóra , Polyák Helga , Tóth Fanni , Vécsei And László
Published: July 2022

Nearly half a century has passed since the discovery of cytoplasmic inheritance of human chloramphenicol resistance. The inheritance was then revealed to take place maternally by mitochondrial DNA (mtDNA). Later, a number of mutations in mtDNA were identified as a cause of severe inheritable metabolic diseases with neurological manifestation, and the impairment of mitochondrial functions has been probed in the pathogenesis of a wide range of illnesses including neurodegenerative diseases. Recently growing number of preclinical studies has revealed that animal behaviors are influenced by the impairment of mitochondrial functions and possibly by the loss of mitochondrial stress resilience. Indeed, as high as 54% of patients with one of the most common primary mitochondrial diseases, mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes (MELAS) syndrome, present psychiatric symptoms including cognitive impairment, mood disorder, anxiety, and psychosis. Mitochondria are multifunctional organelles which produce cellular energy and play a major role in other cellular functions including homeostasis, cellular signaling, and gene expression, among other. Mitochondrial functions are observed to be compromised and to become less resilient under continuous stress. Meanwhile, stress and inflammation have been linked to the activation of the tryptophan (Trp)-kynurenine (KYN) metabolic system, which observably contributes to development of pathological conditions including neurological and psychiatric disorders. This narrative review discusses the functions of mitochondria and the Trp-KYN system, the interaction of the Trp-KYN system with mitochondria, and the current understanding of the involvement of mitochondria and the Trp-KYN system in preclinical and clinical studies of major neurological and psychiatric diseases.
Overview of Conditions that Immediately Reduce Stuttering and A Unifying Account for Their Effect
Authors: Hesse Torsten
Published: July 2022

It has been known for a long time that many people who stutter are immediately fluent in certain conditions, for instance, when they speak in unison with others, in sync with the clicking of a metronome, or when they hear themselves speak in an altered manner. To understand why stuttering is reduced or even eliminated in such conditions is desirable because it may help understand why stuttering occurs in normal speaking conditions. However, empirical findings in this area appear conflicting and confusing, especially with regard to the role of auditory feedback. The article gives an overview of the variety and diversity of fluency-enhancing conditions and of theories proposed to explain their effect. These theories are evaluated in the light of recent empirical findings. A new hypothesis is proposed, based on findings showing that speech processing is limited without attention to the auditory channel. It is assumed that fluency-enhancing conditions draw the speaker’s attention to the auditory channel and, thereby, improve the processing of auditory feedback and its use in speech control. Implications of this account for a causal theory of stuttering and for the treatment of the disorder are discussed.
High Potential Organic Feedstocks for Production of Renewable Solid Briquettes-A Comprehensive Review
Authors: Srinivasan Gokul Raghavendra , Mahajan Aditya , Seth Rajiv , Mahajan Rakesh
Published: July 2022

Briquetting of biomass is an ideal technique for improvising both its volumetric and net energy density; besides, serving as an effective means for reducing pollution. In general, numerous biomass and organic by-products are discarded as wastes, citing their non-edibility, composition of chemical compounds present in their raw form, in addition to their zero usage value. Yet, these biomass wastes hold significant heating values, which promote them into promising solid biofuels, either in their existing or pre-treated form. Accordingly, this review article discusses about the various biomasses used as raw feedstock for briquetting, besides summarising the works carried out in relevance to their respective briquettes. In addition, proximate and lignocellulosic composition of these biomasses, and their pre-treatment techniques followed to prepare them for briquetting, have also been discussed. This study suggested that the heating value of biomasses ranged between 10-20 MJ/kg, whilst, their briquettes reported between 15 and 25 MJ/kg; thereby citing their potential as viable replacement for existing fossil coals. Besides, factors affecting different thermal and physicochemical properties of these briquettes have also been studied and concluded that these properties play a crucial role in deciding the overall quality of the briquettes. Ultimately, this study proposed that any biomass with good calorific value and lignin content can be processed into briquettes with good strength and durability; however, the choice of biomass will also be accounted for by its availability, geographical distribution, and handleability.
Real World Evidence – Current Developments and Perspectives
Authors: Schad Friedemann , Thronicke Anja
Published: July 2022

Real-world evidence (RWE) is increasingly involved in the early benefit assessment of medicinal drugs. It is expected that RWE will help to speed up approval processes comparable to RWE developments in vaccine research during the COVID-19 pandemic. Definitions of RWE are diverse marking the highly fluid status in this field. So far, RWE comprises information produced from data routinely collected on patient’s health status and/or delivery of health care from various sources other than traditional clinical trials. These sources can include electronic health records, claims, patient-generated data including in home-use settings, data from mobile devices as well as patient, product and disease registries. The aim of the present update was to review the current RWE developments and guidelines mainly in the U.S., the UK, Europe and Germany field during the last decade. RWE has already been included in various approval procedures of regulatory authorities reflecting its actual acceptance and growing importance in evaluating and accelerating new therapies. However, since the RWE research is still in a transition process and since a number of gaps in this field have been explored, more guidance and a consented definition are necessary to increase the implementation of real-world data.
OPTIMIZATION OF RESOURCE DISTRIBUTION UNDER THE CONDITIONS OF FUZZY INITIAL DATA
Authors: Raskin Lev , Sukhomlyn Larysa
Published: July 2022

The problem of resource distribution in several directions of its spending is considered for the case when the parameters of the distribution efficiency criterion are fuzzy numbers with given membership functions. The purpose of the study is the development of mathematical models and methods for solving the problem of resource allocation for practically the most important criteria, taking into account the fuzziness of the numerical values – of their parameters. An analysis of the well-known approach to solving the problem is carried out and its main shortcomings are identified, which motivate the continuation of research. A method for solving the stated problem is proposed, the computational implementation of which contains three stages. At the first stage, using the membership functions of the fuzzy parameters of the problem, the membership function of the criterion is formed. The function obtained in this case is approximated at the second stage using a four-parameter distribution. An important advantage of this distribution is the possibility, by varying the numerical values – of its parameters over a wide range, to change the mathematical expectation, variance, and asymmetry of the values – specified by this distribution, providing a high quality of approximation. Thus, the criterion for the effectiveness of the task is determined. At the third stage, a mathematical model of the optimization problem of the distribution of a limited resource is formulated. The following three options for constructing an optimality criterion are considered: maximizing the criterion with the maximum possible value of its membership function; maximization of the criterion, provided that the value of its membership function is not lower than the specified one; maximization of the criterion, provided that the value of the membership function of each of its terms is not lower than the specified one. Each of the resulting problems is a standard problem of mathematical programming and is solved by known methods. A possible direction for further research is discussed in order to improve the adequacy of the used analytical descriptions of the membership functions of the fuzzy parameters of the problem.
IDENTIFICATION OF LINEAR DYNAMIC SYSTEMS IN THE ENVIRONMENT OF POLYNOMYAL SIGNALS
Authors: Kutsenko Oleksandr , Bezmenov Mykola
Published: July 2022

A method for the structural and parametric identification of one-dimensional linear stationary dynamic systems, represented by differential "inputoutput" constraint equations, is proposed. The method is focused on both active and passive experiments. The method is based on a polynomialrepresentation of the input and output signals of the identified dynamic system. A compact vector-matrix representation of polynomials is proposed,which makes it possible to find the forced component of the solution of linear differential equations as a result of performing simple linear algebraicoperations. The vector-matrix representation of polynomials made it possible to quite simply solve the problem of inversion of linear dynamicalsystems and the problem of compensating the measured perturbation. The issues of representing time signals in polynomial form are not considered inthis paper. Based on the obtained linear representation of a one-dimensional dynamic system, which links the parameters of the input and outputsignals with the parameters of the differential equation of the identified dynamic system mathematical model, a linear system of algebraic equations forunknown coefficients of the differential process equation is obtained. In the general case, the resulting system belongs to the class of overdeterminedsystems, and therefore its solution can be obtained by the least-square technique and is reduced to finding a pseudoinverse matrix. A block diagram ofsoftware for solving the problem of structural and parametric identification in the environment of polynomial signals is proposed. The algorithmincludes the procedure of comparing the results of numerical simulation of the identified model with the output experimental signal and correcting thestructure of the model based on the results of the comparison.
STUDY OF THE INFLUENCE OF THE QUALITY OF ASSIMILATION OF THE PREVIOUS MATERIAL ON THE PREDICTION OF STUDENT GRADES IN A PARTICULAR DISCIPLINE
Authors: Melnykov Oleksandr , Gitis Veniamin
Published: July 2022

The paper considers the basic concepts related to the quality of education in general and the assimilation of students of educational material. The problem of predicting a student's grade in any discipline is formulated, having grades in "providing" disciplines. A list of methods that can be applied to solve the problem (multivariate regression analysis method, artificial neural networks method, k nearest neighbors method) is presented, a conclusion is made about the expediency of using the artificial neural networks method. The formulation of the problem of predicting the assimilation of knowledge and programming skills is described. The architecture used was a perceptron with four input neurons, one output neuron, and 10 hidden layer neurons. By conducting a series of numerical experiments, the optimal architecture of the neural network was selected. As an example, the curriculum and the structural and logical scheme of the educational and professional program "Intelligent Decision Making Systems" of the specialty 124 "System Analysis" were used. The created information model of the designed system is described in the visual modeling language UML (diagrams of use cases, classes, cooperation, sequence, states, activities and components). The possibilities of the system for studying the influence of the assimilation of the previous material on the prediction of students' grades in a particular discipline are described, an example of the functioning of this system is given, and an analysis of the results of calculations is carried out. It is indicated that the system allows analysis of the results of calculations for further selection of the best method for forecasting.
Subuh Orchestra of Religious Harmony of Baitunnur Mosque and Santo Yusuf Catholics Church in Pati Central Java
Authors: Zahra Fathimatuz - , Basri Muhammad Hasan , Arifin Zainul - , Surachman Anista Ika
Published: July 2022

This article discusses religious harmony in Pati, Central Java, related to mosques and churches in one location. This harmony was awakening through the combination of the sound of church bells and the sound of the recitation in the mosque using loudspeakers to create harmony between the two houses of worship. Purposing of this article was to narrate and discuss the harmony that occurred in Pati by conducting interviews with Catholic religious leaders, Muslim religious leaders, and residents of Arab, indigenous, and Chinese descent. This study focuses on three questions (a) How are religious symbols in religious harmony; (b) How to build harmony with religious symbols in the form of church bells and adhan); (c) How the Subuh orchestra as a symbolic sacred call for people who perform rituals in the mosque called the call to prayer and in churches use church bells to signify the morning sacrament. The result of this research was that religious people build religious harmony through the dawn of this orchestra, making this simple culture a unifying tool for diversity in society.
Knowledge, Attitudes, and COVID-19 Prevention Practices of Healthcare Workers in Indonesia: A Mobile-based Cross-sectional Survey
Authors: Besral Besral , Wiyanti Zulvi , Nurizin Dion Zein , Herdayati Milla , Sutiawan R , Rahmaniati Martya , Yuniar Popy
Published: July 2022

Knowledge of disease can affect attitudes and prevention practices, and wrong attitudes and practices can directly increase the risk of disease infection. This study aimed to describe the knowledge, attitudes, and COVID-19 prevention practice of healthcare workers in Indonesia and factors associated with prevention practices. A mobile-based cross-sectional survey was conducted in August 2020 with 254 healthcare workers in Indonesia. The self-administered questionnaire consisted of four parts: 1) sociodemographic information, 2) knowledge of COVID-19, 3) attitudes and anxiety toward COVID-19, and 4) COVID-19 prevention practices. The results indicated that healthcare workers in Indonesia had excellent knowledge and positive attitudes about COVID-19, but their preventionpractices were lacking. The multiple logistic regression analysis results revealed that the factors associated with the COVID-19 prevention practices of healthcare workers in Indonesia were knowledge, attitudes, anxiety, domicile island, age, income, and education. Healthcare workers who had excellent knowledge, positive attitudes, and high anxiety exhibited better COVID-19 prevention practices than others. Healthcare workers in Sumatra Island, aged 41–50 years, and an undergraduate education showed better COVID-19 prevention practices than others.
The Influence of Intrapersonal Constraints on Travel Intention of People at High Risk from COVID-19 during the New Normal
Authors: Widiyastuti Dyah , Wardhani Ikasari Kusuma
Published: July 2022

Due to the COVID-19 pandemic, tourism constraints have created a challenge for inclusive tourism, especially for older people and people with comorbidities. This study examined intrapersonal constraints’ effect on the travel intentions of people facing fewer opportunities for tourism due to the COVID-19 pandemic, which could disrupt their well-being fulfillment. The data were collected through an online survey of Jakarta citizens aged 46 years and older from the end of June to September 2021, and a total of 337 responses were accumulated. This study applied partial least square structural equation modeling to test the moderating effect of intrapersonal constraints toward the theory of planned behavior and revealed that the travel intentions of people at high risk from COVID-19 were considered high and were directly influenced by subjective norms, perceived behavioral control, and intrapersonal constraints. High travel intention implies that intrapersonal constraints do not extensively weaken at-risk people’s desire to travel during the new normal.
Zoom Fatigue during the COVID-19 Pandemic: Is it Real?
Authors: Lestari Putri Winda , Fayasari Adhila
Published: July 2022

The coronavirus disease 2019 (COVID-19) pandemic has caused drastic changes to social lives moreover the activities done outside, such as work and school. The policy of large-scale social restrictions (LSRR)/Pembatasan Sosial Berskala Besar (PSBB), which makes people stay at home, also plays an important role in changing the face-to-face activity online. As a solution to the major change, people use video conferencing to keep in touch and still feel like doing "offline" activities. The increasing use of video conferencing has raised concerns about the resulting fatigue, termed "Zoom fatigue." This study aimed to describe Zoom fatigue during the COVID-19 pandemic and the factors contributing to it. This study used a cross-sectional design with 376 participants. Data were gathered by completing a 45-item online questionnaire, which was analyzed using univariate, bivariate (Chi-square), and multivariate (binomial logistic regression) analyses. It was found that 68.6% of respondents experienced Zoom fatigue at a moderate to a high level. Respondents complained of se - veral symptoms related to activity, motivation, and physical weakness after using the video platform. In brief, Zoom fatigue is real, and the frequency of video platform use is related to the incidence of Zoom fatigue.
Influence of Cylindrical Shield Dimensions on Shielding Effectiveness
Authors: Kanafyev O. D. , Trukhanov A. V. , Zubar T. I. , Grabchikov S. S. , Panasiuk M. I. , Kotelnikova A. N. , Fedkin V. A. , Fedosyuk V. M.
Published: July 2022

Study of dimensional parametersʼ influence on shielding properties of cylindrical shields will allow to optimise the fusion process, as well as to reduce production costs by reducing the material used. The purpose of this work was to compare results of theoretical calculation of shielding effectiveness of an infinite cylindrical shield with the data obtained in real conditions.

A cylindrical Ni-Fe shield was synthesised by electrochemical deposition with length of 32 cm, diameter of 4.5 cm and shielding thickness of ≈ 100 µm. The cylinder length was then reduced from 32 cm to 6 cm in 4 cm increments and for each cylinder length shielding effectiveness was measured using three-coordinate Helmholtz field-forming system.

The measurement results show that the calculation of shielding effectiveness of infinite cylindrical shield is valid for cylinder lengths l ≥ 18–20 cm. Shielding effectiveness is markedly reduced at values of l ˂ 15 cm.

Analysis of data obtained allowed to conclude that it is necessary to determine the correction factor when calculating a cylindrical screen shielding efficiency
Dynamic Features of Spectra of Single and Quasi-Periodic Measuring Signals
Authors: Suchodolov U. V. , Isaev A. V. , Sheinikau A. A.
Published: July 2022

Solving the problems of spectral processing of single and quasi-periodic signals in measurement and diagnostic systems is directly related to their isolation against the background of external interference or noise. The purpose of this work was to study single and quasi-periodic signals, i. e. signals limited in time, presented as separate components; development of a mathematical apparatus that connects the individual components of the original, time-limited signal, with the spectral characteristics of the periodic signal, which is obtained from the original by its periodization.

The paper analyzes the spectrum of a quasi-periodic signal, which is presented from spectral density regions separated by spectral components with zero amplitude. The process of signal periodization is considered on the example of unipolar rectangular pulses. The representation of the analyzed complex single signal in the form of a linear combination of given functions, limited in time by the duration of the considered signal, was chosen, and it was determined that it is most logical and efficient to use radio-frequency pulses. The spectral density of the signal under consideration is presented as the sum of the spectral densities of radio-frequency pulses of the same width with a varying carrier frequency. The original signal is presented as the sum of the constituent components (radio-frequency pulses), which form a time-limited frequency spectrum – a quastr. As a result, the correlation of the considered quasi-periodic signal with the parameters of the periodic signal (amplitude, period, and initial phase) is shown.

A format for representing time-limited signals in the form of components related to the spectral characteristics of a periodic signal, obtained from the original signal by periodization, has been developed. The formed mathematical apparatus allows simplifying the algorithmic support of measuring systems by eliminating the correlation signal processing.
Probability of Erroneous Data Registration in a Single Photon Erasure-Type Communication Channel with a Receiver Based on a Photon Counter
Authors: Timofeev A. M.
Published: July 2022

When measuring low-power optical signals, it is necessary to ensure the highest reliability of the received data, which is especially important for single-photon communication channels. This determines the expediency of using photon counters as receiving modules for such channels. They are highly sensitive, but are characterized by data recording errors. Therefore, the purpose of this work was to investigate the influence of the intensity of the registered optical radiation J0 during the transmission of binary symbols “0” on the probability of registering symbols “1” at the output of the communication channel in the presence of symbols “0” at its input P(1/0).

The statistical distributions of the mixture of the number of dark and signal pulses at the output of the photon counter during the registration of binary symbols “0” Pst0 (N ) were determined. To do this, a technique was used to reduce information loss. As a result, the minimum probability P(1/0) was reached.

The probabilities P(1/0) were calculated for a communication channel containing a photon counter as a receiving module. This calculation was carried out at different values of the supply voltage of the avalanche photodetector U and the intensity of the optical signal used to transmit the binary symbols “0” J0 .

The experimental results showed that with increasing optical signal intensity J0 , the dependences P(1/0) on J0 initially remain almost unchanged and retain a constant value. However, with a further increase in J0 , there is a linearly increasing character of the dependences P(1/0) on J0 . Moreover, with other equal reception parameters, such a character of the dependences P(1/0) on J0 begins to manifest itself at higher intensities of the optical signal J0 with an increase in the supply voltage of the avalanche photodetector.
Structuroscopy of Coils after High-Temperature Mechanical Treatment on the Basis of Measurements of Rayleigh Waves Velocity
Authors: Muravʼev V. V. , Gushchina L. V.
Published: July 2022

For the manufacture of spring springs of rolling stock (wagons, locomotives, cars), bars made of spring steels are used. With high-temperature machining, when winding springs and quenching them, there is a difference in the cooling rates of the inner and outer sides of the spring coils, which leads to a difference in the structural state and affects the durability of the springs. The aim of the work is to study the effect of structural changes in the outer and inner surfaces of spring steel coils after winding and high–temperature machining operations on the measured characteristics of Rayleigh acoustic waves.

The propagation velocities of Rayleigh waves in spring-spring steel 60C2A after winding and hightemperature machining operations are investigated. The shadow method and the autocirculation method with piezoelectric converters CTS-19 with a frequency of 5 MHz with a special block design were used for research. The converters provide input and reception of the Rayleigh wave along the inner and outer forming surface of the spring. It is shown that the method of comparing the results of measuring the velocity of Rayleigh waves on a fi base by the coil generator on the inner and outer surfaces of the spring is sensitive to disturbances in the structure of the material and the appearance of defects. An unambiguous relationship of the structural states on the outer and inner sides of the spring with the velocity of the Rayleigh wave is found.

As a result of the measurements, a conclusion was made about the significant sensitivity of Rayleigh waves to the structural state of the steel under study. An increase in the wave velocity was detected on the inner surface of the coil in the contact zone with the mandrel relative to the outer side of the coil, signaling incomplete hardening of steel in this zone during high-temperature machining. The relative speed difference in different spring samples is approximately up to 1 % (≈ 30 m/s), which is a significant value for assessing the quality of high-temperature machining.
Características epidemiológicos de la anemia en niños de 6 meses a 36 meses atendidos en el Centro Materno Infantil Buenos Aires de Villa durante el periodo julio-diciembre 2019
Authors:   , Rojas Huaranga Jessica Milagros
Published: July 2022

La anemia que por Organización Mundial de la Salud es definida como alteración de la cantidad de eritrocitos (por lo que se entiende que la capacidad de traslado de oxígeno de la sangre está alterada) por ello no cubre el requerimiento necesario del organismo. De acuerdo al sexo, la altitud sobre el nivel del mar donde se encuentre la persona, el consumo de tabaco, edad y las diversas fases de la gestación el requerimiento de organismo varia. Se considera que el déficit de hierro como el motivo más frecuente de anemia, aunque puede provocarlo otras carencias (ácido fólico, vitamina B12 y vitamina A), parasitosis y enfermedades genéticas o adquiridas los cuales alteran la síntesis de hemoglobina y supervivencia de los eritrocitos. (1) . Para considerar anemia, la OMS, establece hemoglobina menor a once gr / dl (1) Entre los grupos vulnerables se consideran los menores de 3 años y gestantes. Ello se debe al requerimiento nutricional en esa etapa. (2) Al final del primer año, el niño tiene la exigencia de consumo diario de hierro similar al de un adulto, pero el volumen en alimentos ingeridos por un niño es más bajo al del adulto, por lo que potencia el riesgo de los lactantes a sufrir de anemia. Los factores que aumentan la exposición a padecer de anemia en el niño son: bajo peso al nacer, ligadura anticipada del cordón umbilical, incorrecta lactancia materna exclusiva, dietas de baja biodisponibilidad de hierro. Se estima que dos millones a nivel mundial de seres humanos son anémicas (3) De acuerdo con la OPS, en las Américas 22,3 millones de niños, 3.6 millones de embarazadas y 33 millones de mujeres fértiles tienen anemia. (4)
Inteligencia emocional y dependencia al móvil en alumnos de una universidad privada de Lima durante el confinamiento frente a la COVID-19
Authors:   , Curo Mucha Alexandra Carmen
Published: July 2022

La finalidad de esta investigación fue analizar la asociación entre la inteligencia emocional y la dependencia al móvil en alumnos de una universidad privada de Lima durante el confinamiento frente a la COVID-19. Se trata de un estudio de enfoque cuantitativo, de tipo descriptivo correlacional, de diseño no experimental-transversal. Conformada por 405 participantes de una universidad privada entre el año 2020 y 2021 de ambos sexos y de todas las carreras, a los cuales se les aplicó los instrumentos denominados Trait Meta-Mood Scale 24 adaptado al Perú por Thalia Maxera en el 2017 y TDM estandarizado en nuestro país por Katherine Gamero Quequezana y colaboradores en el 2016. En conclusión, se observa que no hay asociación significativa entre las variables de estudio, al igual que al relacionar la variable dependencia al móvil con la percepción emocional (r=0.047, p=0,345) no existe relación significativa. Mientras que con la dimensión de comprensión emocional (r=-0,121, p=0,015) y regulación emocional (r=-0,191, p=0,000) la relación es negativa muy baja, pero significativa, lo cual indicaría que a una mayor comprensión y regulación emocional estaría relacionada con menor dependencia al móvil. Los resultados encontrados contribuyen para seguir investigando la relación de ambas variables y considerar otras características en la muestra de estudio.
Regímenes tributarios y el impuesto a la renta en las MYPES, distrito Ate - 2021
Authors:   , Olarte Huaraca Celia Dencid
Published: July 2022

Mediante la legislación tributaria, SUNAT como ente recaudador de tributos tiene la facultad de recaudar el impuesto a la renta a los contribuyentes de los distintos regímenes tributarios de acuerdo con el tipo de negocio y nivel de ventas en relación con las ganancias obtenidas durante el año, el mismo que es utilizado para garantizar el desarrollo de la población. El objeto de estudio fue determinar la relación entre los regímenes tributarios y el impuesto a la renta en las Mypes, Distrito Ate – 2021, para lo cual se consideró el estudio de tipo básico con diseño de tipo no experimental transversal correlacional con un enfoque cuantitativo. La población corresponde a 39 Mypes de la zona 5, Sector 22 de Santa Clara - distrito de Ate, teniendo una muestra de 36 Mypes en el cual se empleó el muestreo no probabilístico por conveniencia. Se aplicó los instrumentos de validez y confiabilidad y se obtuvo como resultados con el Alfa de Cronbach, RT (0,924) IR (0,786). Para la prueba de hipótesis se empleó la prueba no paramétrica de Rho de Spearman en la que muestran una correlación de (RS = 0,045) siendo menor a 0.05 lo que significa que se acepta la hipótesis que se planteó y por lo tanto se concluye que existe una relación positiva débil entre los Regímenes tributarios y el Impuesto a la Renta.
Apalancamiento y rentabilidad de la empresa HVC Exportaciones SAC, distrito de Ate - 2021
Authors:   , Mendoza Huallpayunca Antonieta
Published: July 2022

El presente trabajo de investigación tuvo como objetivo determinar la relación entre las dimensiones de apalancamiento y rentabilidad en la empresa HVC Exportaciones SAC, cuyo propósito fue brindar la relación significativa de las dos variables. Este estudio tuvo como objetivo determinar la relación entre financiamiento y rentabilidad de la empresa exportadora. La investigación fue de tipo básica, el diseño fue no experimental de tipo transversal, descriptivo - correlacional. La muestra fue de 32 colaboradores de las diferentes áreas a quienes se les aplico dos instrumentos que contaron con validez y confiabilidad para la prueba de hipótesis se empleó la prueba no paramétrica de Shapiro. Asimismo, se determinó que existe relación significativa e inversa entre apalancamiento y rentabilidad económica y financiera. Por lo tanto, empíricamente demuestra significancia considerable entre apalancamiento y rentabilidad.
A Bayesian Optimization Approach to the Simultaneous Extraction of Intrinsic Physical Parameters fromT1 andT2 Relaxation Responses
Authors: Li Rupeng , Shikhov Igor , Arns Christoph
Published: July 2022

Nuclear magnetic resonance (NMR) relaxation responses in porous media provide a sensitive probe of the microstructure and yet are influenced by a number of factors which are not easily detangled. Low-field T2 transverse relaxation measurements can be carried out quickly and are frequently used as pore size distributions, while adding T1 longitudinal relaxation measurements provides additional insights into surface properties and fluid content. Here we present an inverse solution workflow extracting related intrinsic physical parameters of the system by fitting experiment and numerical simulation(s). An efficient NMR forward solver for the simultaneous calculation of T1 and T2 responses is introduced, which honors existing inequality relationships between T1 and T2 parameters. We propose a Bayesian optimization approach that jointly identifies T1- and T2-related properties satisfying physical constraints by simultaneously fitting T1 and T2 experiments to simulations. This dual-task inverse solution workflow (DT-ISW) identifies the solution by minimizing the sum of the L2 norm of the fitting residuals of both T1 and T2 distributions into a single objective and jointly models the two highly correlated objectives with high efficiency using the vector-valued Gaussian process (GP) kernel for transfer learning. A multimodal search strategy is used to identify nonunique solution sets of the problem. The workflow is demonstrated on Bentheimer sandstone, identifying five intrinsic physical parameters. The performance of the joint DT-ISW (DT-ISW-J) is compared to a sequential DT-ISW (DT-ISW-S) approach as well as an independent single-task ISW (ST-ISW) of the T1 and T2 responses. Both dual-task versions converge more than two times faster than the single-task version. DT-ISW-J equally minimizes the L2 norm of T1 and T2 fitting residuals whereas DT-ISW-S only preferentially minimizes the objective assigned higher importance. A Pareto optimal solution (POS) is provided to allow operators to subjectively balance the preference of T1 and T2 data fits for the slightly conflicting objectives. The ability to extract five intrinsic physical parameters simultaneously provides new techniques for tracking wettability alteration and assessing the influence of clay amount and distribution on petrophysical property estimates.