bluuebunny/crossref_metadata_2025 huggingface dataset:
SPORTS INJURIES IN HIGH-LEVEL AEROBIC GYMNASTICS ATHLETES
Authors: Shen Weizhen , Zhou Qunying
Published: February 2023

ABSTRACT Introduction: With the rapid development of aerobic gymnastics worldwide, research is required to constantly increase. Objective: Analyze the main causes of sports injuries, proposing measures for prevention, treatment, and rehabilitation, as well as providing a theoretical basis for reducing the risk of sports injuries and actively seeking ways and measures to prevent and treat sports injuries in aerobic gymnastics athletes. Methods: Statistical-mathematical analysis was used, mainly including the coefficient of variation method, correlation matrix method, and factor analysis. The common variable of the trend of sports injuries was found. Results: The research shows that the scientific awareness, self-protection, and injury prevention of aerobic gymnastics training strengthen the ideological education and theoretical guidance of athletes, improve athletes' awareness of sports injuries, regulate technical specifications, strengthen fitness training and improve Chinese competitive aerobics. Conclusion: In the healthy period before injuries, we should take various measures to improve physical fitness and skills, enabling good health work in the acute period after injuries and understanding the working principle of early diagnosis and treatment to better use treatment time. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
CHARACTERISTICS AND PREVENTION OF SPORTS INJURIES IN ADOLESCENT SOCCER
Authors: Xi Yang
Published: February 2023

ABSTRACT Introduction: This year is the year of the soccer World Cup. With the adult team unable to participate in the World Cup, society's attention has turned to college soccer. However, as a highly aggressive sport, soccer will inevitably cause various sports injuries. Objective: Investigate the causes and characteristics of sports injuries of young school soccer players in some areas of China, and propose measures to prevent and control sports injuries. Methods: A total of 1024 adolescents aged 6 to 17 years were research volunteers; the causes and characteristics of sports injuries of these young college soccer players were investigated through field investigation, questionnaire survey, expert interview, and mathematical analysis. Results: The results of the survey show that 73.2% (750 people) of the respondents have suffered sports injuries, among which the common injuries in elementary school (6-12 years old) are knee and upper limb joints, and the common injuries in middle school (12-17 years old) are mainly ankle and knee joints, with the same characteristics as adult players. The degree of injury in different segments is the same, with mild injuries being the most common, followed by moderate and severe. As the learning period increased, the mild injuries decreased significantly, while the moderate and severe injuries showed an increasing trend. Most injuries occurred in the summer, with the injury rate during training significantly higher than during competition. The causes of injuries are different in different age groups. Conclusion: Young school soccer players are prone to sports injuries in the sporting process, and specific preventive measures are needed to prevent these injuries from causing adverse effects on young players. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
SIMULATED WEIGHTLESSNESS LED TO THE TRANSFORMATION OF GLYCOLIPID METABOLISM IN THE LIVERS OF MICE
Authors: Chen Ya-Fei , Wang Xing-Chen , Wang Zhe , Chen Le , Liu Xi-Wei , Song Xin-Yi , Zhang Jing-Wen , Wang Chuan-Li , Guo Yang-Yang , Xu Jin-Hui
Published: February 2023

ABSTRACT Objectives: The effects of weightlessness on the liver were studied using a tail suspension (TS) male mouse model. Methods: The effects of 0-, 2- and 4-week TS (CON, TS2 and TS4 groups) on glycogen and lipid content, as well as on the molecular processes of the synthesis and degradation pathways, were examined. Results: (1) The number of glycogenosomes under ultrastructure and the glycogen content were considerably larger in the TS4 group than in the other two groups. (2) In the TS4 group, glycogen synthase activity remained constant while glycogen phosphorylase activity dropped, indicating that glycogen breakdown was reduced. (3) The livers of the TS2 group had the highest lipid and triglyceride content, indicating lipid buildup in the liver at this time. (4) In the TS2 group, the activities of the fatty acid synthesis-related factors acetyl-CoA carboxylase and fatty acid synthase increased, while hepatic lipase decreased, indicating that lipid synthesis increased, while decomposition decreased. (5) In the TS2 group, the protein expression of glucose transporters 1 and 2 increased. Conclusions: From TS2 weeks to TS4 weeks, the main energy consumption mode in the livers of mice transitioned from glucose metabolism to lipid metabolism as glucose use decreased. Level of evidence II; Comparative prospective study.
EVALUATION OF ANKLE MOVEMENTS ON A SUDDEN INVERSION PLATFORM
Authors: Santos Leandro Dias dos , Pereira César Augusto Martins , Bolligner Neto Raul , Alonso Angélica Castilho , Greve Júlia Maria D'Andrea
Published: February 2023

ABSTRACT Introduction: Ankle sprains are frequent in sports activities and can lead to joint instability with clinical and performance consequences. Sudden ankle inversion platforms have been used to study the mechanism of ankle sprain. Objectives: To test a static platform that simulates the movement of ankle sprain (sudden inversion) in soccer players. Methods: A platform was developed to perform the sudden movement of an ankle sprain dissociated in three axes: inversion, plantar flexion, and medial rotation. A computer program was also created to read the angular velocity and the time to reach the maximum amplitude of the three axes of movement, synchronized with the platform movements. Thirty soccer players without ankle sprains were evaluated on the sudden inversion platform. Each athlete performed 10 randomly initiated tests, with five per leg. Results: There was no statistical difference in angular velocity or time to reach maximum range of motion of plantar flexion and medial rotation between the tests. During the tests, the angular velocity of the inversion increased. Conclusion: The sudden static platform evaluated the movements performed by the ankle during the sprain reliably in the 10 tests with no difference in the mechanical behavior. Level of evidence I; Therapeutic studies - Investigation of treatment outcomes.
EFEITO DO EXERCÍCIO EM ESTEIRA DE INTENSIDADE MODERADA NO AUMENTO DOS NÍVEIS DE ADIPONECTINA EM PACIENTES COM DIABETES MELLITUS TIPO 2
Authors: Mudjanarko Sony Wibisono , Irawati Anugrahini , Tinduh Damayanti , Susanto Tsana Nadhira
Published: February 2023

RESUMO Introdução: A adiponectina desempenha um papel significativo no sistema metabólico na inibição da citocina pró-inflamatória e na utilização da captação de glicose. A esteira é um aparelho de caminhada aeróbica que estimula as características da caminhada natural. Os exercícios aumentam o nível de adiponectina, resultando na melhora da sensibilidade à insulina. Objetivos: Analisar o efeito de exercícios aeróbicos em uma esteira de intensidade moderada com um aumento gradual de velocidade e inclinação sobre os níveis de adiponectina em homens com diabetes mellitus tipo 2 (DMT2). Método: Vinte e dois participantes com DMT2 foram randomizados para grupos de exercício em esteira e controle. O grupo experimental realizou sessões de 30 minutos de exercício em esteira de intensidade moderada com velocidade crescente e inclinação gradual três vezes por semana durante quatro semanas. O grupo de controle se submeteu a exercício individual durante 150 minutos por semana. Os participantes foram avaliados em relação aos parâmetros clínicos e laboratoriais antes e após o programa de quatro semanas. Resultados: Houve um aumento significativo no nível de adiponectina de 456,3 ± 42 pg/ml para 586,3 ± 87,8 pg/ml (p=0,04, p<0,05) no grupo de exercício em esteira. No grupo de controle, a adiponectina apresentou um pequeno aumento de 466,7 ± 85 pg/ml para 471,8 ± 59 pg/ml (p=0,646). Conclusão: Descobriu-se que exercícios na esteira de intensidade moderada com velocidade crescente e inclinação gradual conduzem a um resultado significativamente superior na melhora dos níveis de adiponectina em relação a exercícios físicos individuais padrão ao tratar o DMT2. Nível de evidência II; Estudos terapêuticos – Investigação de resultados do tratamento.
EPIDEMIOLOGIA DAS LESÕES ESPORTIVAS EM ATLETAS COREANAS DE ESGRIMA DE ELITE: UM ESTUDO PROSPECTIVO DE COORTE
Authors: Kim Hyun Chul , Park Ki Jun
Published: February 2023

RESUMO Objetivos: Nosso objetivo foi avaliar o risco de lesão associado às atividades de treinamento de acordo com a categoria de arma de atletas coreanas de esgrima de elite. Métodos: A partir de 2021, coletamos prospectivamente dados de 80 atletas de elite de esgrima no Centro de Treinamento Coreano. As taxas de incidência de lesões foram expressas como taxas de Poisson com intervalo de confiança de 95%. Usamos o teste de χ2 para comparar os locais de lesão e os tempos de recuperação de acordo com a categoria da arma. Resultados: Um total de 233 lesões foi registrado, com média de 3,27 (IC 95%, 2,86–3,72) lesões por 1.000 horas de treinamento. O sabre teve a maior taxa de incidência de lesões, seguido pela espada e pelo florete. As lesões dos atletas de esgrima foram mais comuns nos membros inferiores (46,35%), seguidas pelos membros superiores (24,03%), tronco (20,17%) e região da cabeça e pescoço (9,44%). A categoria da arma não influenciou as regiões do corpo (p = 0,425). No entanto, o tempo de recuperação diferiu significativamente de acordo com a região do corpo (p = 0,021). Conclusão: Verificou-se que a categoria de arma afeta a taxa de incidência de lesões. Além disso, o tempo de recuperação variou de acordo com a região do corpo. São necessárias mais pesquisas para esclarecer esses resultados. Nível de evidência II; Estudos terapêuticos – investigação de resultados de tratamento.
There’s so Much life out there! Work-life Conflict, Women and Accounting Graduate programs
Authors: Nganga Camilla Soueneta Nascimento , Nova Silvia Pereira de Castro Casa , Silva Sandra Maria Cerqueira da , Lima João Paulo Resende de
Published: February 2023

ABSTRACT Objective: this article discusses women’s experiences during their doctoral education in accounting, focusing on the work-life conflict. Theoretical framework: we adopted feminist theories to discuss the imposed social role on women through the sexual division of labor and how this social role relates to the search for balance between personal and professional life. Method: we adopted constructionism as the epistemological strand and feminist post-structuralism as a theoretical perspective. We conducted in-depth interviews to construct the research corpus. We analyzed the evidence through template analysis and ordered codes according to the research characteristics and purpose. Results: due to the fact that the academic structure replicates the sexual division of labor found in society, imposed dichotomies were found as ‘abandonment or postponement’ of personal life to the detriment of academic life, mainly by issues related to motherhood and the high demands of graduate programs. Conclusions: as a result, we conclude that female doctoral students play several social roles traditionally attributed to women. Therefore, they relegate their personal lives, deciding to postpone marriage and maternity or entering doctoral studies. Thus, considering both the personal relationships built with peers and teachers and the academic institutional environment, the academy still needs to advance to contemplate the trajectory of women so that the difficult choices do not fall on them. The paper contributes to the literature by offering insights and reflections specific to the accounting Brazilian academia.
Social Entrepreneurship Measurement Framework for Developing Countries
Authors: Vieira Valéria Gonçalves , Oliveira Verônica Macário de , Miki Adriana Fumi Chim
Published: February 2023

ABSTRACT Objective: this study aims to propose and validate with experts a framework with elements for measuring social entrepreneurship for developing countries. Theoretical framework: social entrepreneurship is approached based on elements from the three main schools of thought: European, American, and of developing countries. Methods: the proposed framework was designed based on a literature review of entrepreneurship models indexed in Web of Science and Scopus databases. The dimensions associated with social entrepreneurship and their potential analysis categories were identified, composing a preliminary framework of indicators validated by a panel of experts using the Delphi technique. Results: the model includes elements of entrepreneurship measurement related to the individual and organizational levels, composing four dimensions, namely: social entrepreneurial intention, social entrepreneurial orientation, processes, and outcomes. It shows that social entrepreneurship in developing countries depends on an orientation toward the social, which is reflected in the desire to solve society’s problems. Thus, in addition to economic value, it generates social and environmental value. Conclusions: among the study’s contributions, the development of a form of assessment for social entrepreneurship in a specific context stands out, since no models for measuring social entrepreneurship were found within this context. The results also tend to contribute to the advance of the field, given that it can become a tool, a measurement model that includes the main characteristic elements of both the entrepreneur and the social enterprise.
A STOCHASTIC DOMAIN DECOMPOSITION AND POST-PROCESSING ALGORITHM FOR EPISTEMIC UNCERTAINTY QUANTIFICATION
Authors: Ganesh Mahadevan , Hawkins S. C. , Tartakovsky Alexandre M. , Tipireddy Ramakrishna
Published: February 2023

Partial differential equations (PDEs) are fundamental for theoretically describing numerous physical processes that are based on some input fields in spatial configurations. Understanding the physical process, in general, requires computational modeling of the PDE in bounded/unbounded regions. Uncertainty in the computational model manifests through lack of precise knowledge of the input field or configuration. Uncertainty quantification (UQ) in the output physical process is typically carried out by modeling the uncertainty using a random field, governed by an appropriate covariance function. This leads to solving high-dimensional stochastic counterparts of the PDE computational models. Such UQ-PDE models require a large number of simulations of the PDE in conjunction with samples in the high-dimensional probability space, with probability distribution associated with the covariance function. Those UQ computational models having explicit knowledge of the covariance function are known as aleatoric UQ (AUQ) models. The lack of such explicit knowledge leads to epistemic UQ (EUQ) models, which typically require solution of a large number of AUQ models. In this article, using a surrogate, post-processing, and domain decomposition framework with coarse stochastic solution adaptation, we develop an offline/online algorithm for efficiently simulating a class of EUQ-PDE models. We demonstrate the algorithm for celebrated bounded and unbounded spatial region models, with high-dimensional uncertainties.
Construction cost prediction based on adaptive boosting and artificial neural networks
Authors: Feng Wenhui , Zou Yafeng
Published: February 2023

The artificial bee colony algorithm and multilayer error back-propagation neural networks commonly used in construction project cost forecasting suffer from slow training speeds and high costs. A combination of the beetle antennae search, support vector machines, adaptive boosting and genetic algorithms was proposed to solve these problems. Support vector machine optimisation was accomplished using the beetle antennae search algorithm. The enhanced genetic algorithm was then used directly to swap out the fit solutions for the unfit ones. One hundred projects completed during the last 3 years were chosen from a network integration database to serve as the training data set after developing the prediction model. Using actual cost information and trial and error, appropriate parameters were chosen, and combinations of algorithms were selected for comparison. The maximum relative error of the improved method was 9.01%, which was 34.68% lower than that of the baseline method, while the smallest relative error was 0.59%, which was 1.58% lower than that of the baseline method. The ’innovation of the study lies in the addition of the beetle antennae search algorithm and enhancement of the genetic algorithm. The former significantly increased the search efficiency of the network, while the latter generally increased the population fitness and mitigated the drawback of the genetic algorithm which was prone to local convergence.
Novel Genetic Variants Associated with Chronic Kidney Disease Progression
Authors: Han Miyeun , Moon Sungji , Lee Sangjun , Kim Kyungsik , An Woo Ju , Ryu Hyunjin , Kang Eunjeong , Ahn Jung-Hyuck , Sung Hye Youn , Park Yong Seek , Lee Seung Eun , Lee Sang-Ho , Jeong Kyung Hwan , Ahn Curie , Kelly Tanika N. , Hsu Jesse Y. , Feldman Harold I. , Park Sue K. , Oh Kook-Hwan
Published: February 2023

Significance Statement

eGFR slope has been used as a surrogate outcome for progression of CKD. However, genetic markers associated with eGFR slope among patients with CKD were unknown. We aimed to identify genetic susceptibility loci associated with eGFR slope. A two-phase genome-wide association study identified single nucleotide polymorphisms (SNPs) in TPPP and FAT1-LINC02374, and 22 of them were used to derive polygenic risk scores that mark the decline of eGFR by disrupting binding of nearby transcription factors. This work is the first to identify the impact of TPPP and FAT1-LINC02374 on CKD progression, providing predictive markers for the decline of eGFR in patients with CKD.

Background

The incidence of CKD is associated with genetic factors. However, genetic markers associated with the progression of CKD have not been fully elucidated.

Methods

We conducted a genome-wide association study among 1738 patients with CKD, mainly from the KoreaN cohort study for Outcomes in patients With CKD. The outcome was eGFR slope. We performed a replication study for discovered single nucleotide polymorphisms (SNPs) with P<10−6 in 2498 patients with CKD from the Chronic Renal Insufficiency Cohort study. Several expression quantitative trait loci (eQTL) studies, pathway enrichment analyses, exploration of epigenetic architecture, and predicting disruption of transcription factor (TF) binding sites explored potential biological implications of the loci. We developed and evaluated the effect of polygenic risk scores (PRS) on incident CKD outcomes.

Results

SNPs in two novel loci, TPPP and FAT1-LINC02374, were replicated (rs59402340 in TPPP, P
discovery=7.11×10−7, P
CRIC=8.13×10−4, P
meta=7.23×10−8; rs28629773 in FAT1-LINC02374, P
discovery=6.08×10−7, P
CRIC=4.33×10−2, P
meta=1.87×10−7). The eQTL studies revealed that the replicated SNPs regulated the expression level of nearby genes associated with kidney function. Furthermore, these SNPs were near gene enhancer regions and predicted to disrupt the binding of TFs. PRS based on the independently significant top 22 SNPs were significantly associated with CKD outcomes.

Conclusions

This study demonstrates that SNP markers in the TPPP and FAT1-LINC02374 loci could be predictive markers for the decline of eGFR in patients with CKD.
As pessoas, a quasi-pronominal human impersonal construction in European Portuguese?
Authors: Posio Pekka
Published: February 2023

The grammaticalization of nouns meaning ‘man’ or ‘person’ into impersonal pronouns is a well-documented phenomenon found across the world. In Europe, such impersonal pronouns are characteristic of languages with obligatory subject expression like Germanic languages and French (Siewierska, 2011). However, European (EP) and Brazilian Portuguese (BP) also display impersonal uses of noun phrases with the lexeme pessoa ‘person’ as recently discussed by Posio (2017, 2021) and Amaral and Mihatsch (2019, forthcoming). The present paper analyses the use of the plural form as pessoas ‘the people’ in a sociolinguistic interview corpus of spoken EP, comparing it with similar data from Peninsular Spanish (Fernández Juncal, 2005) and with dialectal data from the CORDIAL-SIN corpus (Martins, 2000–). In terms of frequency, as pessoas occurs over 30 times per 10,000 words in the EP interview data, in contrast to just over 3 occurrences in the CORDIAL-SIN and less than one occurrence of the cognate las personas in the Spanish data. In addition to discussing the high token frequency and other properties associated with grammaticalization, the paper examines the referential and quantificational properties of a gente and explores the hypothesis that as pessoas might be a sociolinguistically conditioned alternative for the impersonal pronoun a gente ‘people; us’, considered ‘popular’ in normative EP. However, this hypothesis is not supported by the data: while sociolinguistic factors do affect the frequency of use of a gente and as pessoas, the two forms are functionally different in that a gente typically includes the speaker in its referential range and as pessoas implies a speaker-exclusive reading.
 
Composite Revealed Comparative Advantage Index: A Non-parametric Approach
Authors:   Indian Ports Association, CHAKRABARTTY Satyendra Nath , SINHA Deepankar ,   Indian Institute of Foreign Trade
Published: February 2023

The composition and share of export items from a country change over time. Individual exporting companies take firm-level actions to keep up their market share. A relative (to the point of reference) and comparative (compared to other exportable goods) advantage index for an export item can aid decision-making at the country and company levels. Present literature shows less reference to the existence of such an index. The popular Balassa’s revealed comparative advantage (B-RCA) index measures the comparative strength of a product at any given period. However, this method and its variants are time stationary and not directly applicable for sectors, i.e., groups of commodities with the same first four digits of the HS Code. Sector-level RCA aids in identifying the country's comparative advantage over the sector over time. For a given set of products, the paper uses many partner countries and a manyproduct trade approach. This paper suggests two indices to reflect the dynamic RCA. It suggests calculating the ratio of the Balassa index for each product for the current period and reference period – the relative revealed comparative advantage (RRCA); proposes geometric aggregation of these ratios to get a composite RCA (CRCA) index for a country.
Política pública para imigrantes: os desafios no acesso aos serviços da Atenção Primária em Saúde (APS) em Lajeado/RS
Authors: Brandt Grazielle Betina , Areosa Silvia Virginia Coutinho , Rodrigues Karen Priscila
Published: February 2023

O presente artigo apresenta o recorte de uma pesquisa no campo de Desenvolvimento Regional, realizada no município de Lajeado/RS no ano de 2021. Foram selecionados dois serviços de saúde que atendem o maior número de imigrantes no município, a Estratégia de Saúde da Família (ESF) São José Praia e a Unidade Básica de Saúde (UBS) Moinhos, e, além destes, a 16ª Coordenadoria Regional de Saúde (CRS), responsável pelos serviços da região. A partir a escolha dos serviços em saúde foi realizada uma pesquisa de abordagem qualitativa, com a realização de entrevistas semiestruturadas com um total de 13 sujeitos, entre eles oito profissionais da saúde, quatro imigrantes haitianos e uma gestora, coordenadora regional da Política de Atenção Primária em Saúde. O objetivo deste estudo foi contextualizar os desafios  no acesso a serviços prestados para  imigrantes no Sistema Único de Saúde (SUS).  A partir dos resultados da pesquisa, identificamos  a necessidade de se criarem políticas públicas específicas para imigrantes no SUS, pois acreditamos que o planejamento das ações de saúde deve levar em conta a influência cultural desses sujeitos, e para isso, há a necessidade de se pensarem políticas públicas que atendam as especificidades advindas dos fatores culturais. Ainda, entre os principais resultados dessa pesquisa, apontamos como desafios nos atendimentos da APS de Lajeado/RS a barreira  linguística, os ritos religiosos e de saúde  como fator a serem considerados na prestação aos serviços de saúde para imigrantes. Acreditamos que a construção de políticas públicas específicas para essa comunidade, constitui-se num importante papel para diminuir as desigualdades na prestação dos serviços  e a discriminação em torno das práticas culturais de imigrantes no sistema de saúde.
On the finite support property of Gul’ko-Khmyleva’s homeomorphism
Authors:   Tomsk State University, Ametova Valeriya S. , Lazarev Vadim R. ,   Tomsk State University
Published: February 2023

It is established that for the homeomorphism of the spaces c0 and s × c0 constructed by S.P. Gulko and T.E. Khmylyov, the image of the first coordinate functional under the adjoint mapping has no finite support. As a consequence, we see that this homeomorphism does not have the finite support property. In addition, it is shown that the images of all other coordinate functionals under the adjoint mapping have finite supports. The authors thank S.P. Gubko and T.E. Khmyleva, as well as A.V. Osipov for their kind attention to this work. The authors thank S.P. Gubko and T.E. Khmyleva, as well as A.V. Osipov for their kind attention to this work.
A one-dimensional mathematical model of barrel vibrations with arbitrary cross-sectional shapes
Authors:   Kalashnikov Izhevsk State Technical University, Rusyak Ivan G. , Sufiyanov Vadim G. ,   Kalashnikov Izhevsk State Technical University, Klyukin Daniil A. ,   Kalashnikov Izhevsk State Technical University
Published: February 2023

The problem of longitudinal and transverse vibrations of a barrel with arbitrary cross-sectional shapes is considered and solved in the framework of a one-dimensional model. The study shows that the amplitude of transverse vibrations in the vertical plane significantly exceeds that in the horizontal plane. This paper proposes to reduce the amplitude of vibrations by changing the shape of the barrel cross-section, namely by adding stiffeners. The numerical algorithm for solving the problem is developed on the basis of the integro-interpolation method. The verification of the numerical integration method is carried out, and the grid convergence is verified by means of the modeling of barrel vibrations for a 30 mm automatic cannon. The study of the impact of the barrel cross-section shape shows that the use of stiffeners can reduce the initial deflection and the amplitude of muzzle vibrations when firing in bursts. The obtained results demonstrate a narrow spread of projectile departure angles, and, consequently, the improved shooting accuracy of the automatic cannon.
Rotation of supermolecules around an intermediate axis of inertia
Authors:   Tomsk State University, Bubenchikov Mikhail A. , Mamontov Dmitriy V. ,   Tomsk State University, Azheev Sergey A. ,   Tomsk State University, Azheev Aleksandr A. ,   Tomsk State University
Published: February 2023

In the problem of the inertial rotation of molecular objects, only kinematic relations for the nodes of the molecular structure are evolutionary. These relations determine the position of the atoms of a supermolecule depending on the instantaneous angular velocity of the object in inertial motion. All other relations are algebraic, since they are integrals of the equations of rotational motion. The latter relations include both the projections of the angular velocities of the molecule and the instantaneous coordinates of the atoms. Within the framework of the fourth-order Runge-Kutta scheme, each time step is divided into four positions. Initially, in each of these positions, new values of coordinates are determined or the initial coordinates of atoms at the first position of the first time step are used. After the coordinates are found, in the same position, the projections of angular velocities of the supermolecule are obtained from conservation relations for the projections of the angular momentum. Based on the values of the coordinates in four positions, the coordinates on a new time layer are recalculated. After that, solving the system of three linear algebraic equations according to Cramer's rule, the projections of angular velocities at a new time step are determined. Then, the cycle is repeated. During the inertial rotation, the kinetic energy of an object is conserved. Verification of the calculated kinetic energy shows that the result is obtained with machine accuracy. Further, the constructed calculation scheme is used to study the Louis Poinsot instability. The full range of the considered instability for a fullerene C100 (C1 symmetry) is presented.
Analysis of impact resistance for two groups of ceramic and composite materials
Authors:   Tomsk State University, Zelepugin Sergey A. ,   Tomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, Tolkachev Vladimir F. ,   Tomsk State University, Tyryshkin Il’ya M. ,   Tomsk State University
Published: February 2023

Complex experimental and theoretical studies of shock-wave characteristics and penetration parameters are conducted to develop physical and mathematical models of deformation and fracture of ceramic and composite materials under high-velocity loading. The purpose of this work is to investigate the fracture of ceramic and composite targets and their efficiency in ceramic-containing structures. The experiments are performed using a ballistic test stand (Research Institute of Applied Mathematics and Mechanics, National Research Tomsk State University). The deformation and fracture of ceramic (aluminum oxide Al2O3, aluminum oxide (KVP-98, corundum), zirconium dioxide ZrO2, silicon carbide SiC) and composite (TiC-NiCr and TiB2-B4C) materials are studied experimentally in the impact velocity range of 0.5 - 6.5 km/s. The dynamics of the fracture of ceramic plates (silicon carbide and aluminum oxide) is analyzed. The fragments of the plates and their size distribution are given. The study of the impact resistance of ceramic and composite samples reveals two groups of materials with essentially different levels of efficiency. For both groups, the dependence of the efficiency parameter on the impact velocity demonstrates a decrease in the velocity range from 0.5 to 3.0 - 4.5 km/s and a subsequent increase when the impact velocity tends to 6.5 km/s. The obtained experimental results may be used during the validation and verification of numerical and analytical models, approaches, and software packages.
On ideal class group computation of imaginary multiquadratic fields
Authors:   Immanuel Kant Baltic Federal University, Novoselov Semyon A.
Published: February 2023

In the paper, we extend Biasse - van Vredendaal (OBS, 2019, vol. 2) implementation and experiments of the class group computation from real to imaginary multiquadratic fields. The implementation is optimized by introducing an explicit prime ideal lift operation and by using LLL reduction instead of HNF computation. We provide examples of class group computation of the imaginary multiquadratic fields of degree 64 and 128, that has been previously unreachable.
The method for constructing uniform planar approximations of the filter generator
Authors:   Lomonosov Moscow State University, Kuschinskaya Ludmila A.
Published: February 2023

Planar approximations of filter generators can be used to restore its initial state from a segment of the output sequence. The results of the study of one method for constructing plane approximations of a special form are presented.
Effective algorithm for finding shortest paths in dense Gaussian networks
Authors:   Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Monakhova Emilia A. , Monakhov Oleg G. ,   Institute of Computational Mathematics and Mathematical Geophysics SB RAS
Published: February 2023

As a promising topology of networks on a chip, we consider a family of Dense Gaussian Networks, which are optimal circulant degree four graphs of the form C(D2 + (D + 1)2; D, D + 1). For this family, an algorithm for finding the shortest paths between graph vertices is proposed, which uses relative addressing of vertices and, unlike a number of the known algorithms, allows to calculate the shortest paths without using the coordinates of neighboring lattice zeros in a dense tessellation of graphs on the ℤ2 plane. This reduces the memory and execution time costs compared to other algorithms when the new algorithm is implemented on a network-on-chip with a Dense Gaussian Network topology.
Empresas Multinacionales Chinas: Efectos en la pobreza mundial
Authors: Neme Castillo Omar , Chiatchoua Cesaire , Briseño Perezyera José Israel
Published: February 2023

El objetivo del presente trabajo fue determinar el efecto que tienen las empresas multinacionales chinas en la reducción de la pobreza en un grupo de 36 países de ingreso alto y medio-alto en los que operaron en el periodo 2009-2018. Se emplea una  metodología econométrica de datos de panel dinámica. Se encuentra que estas multinacionales influyen positivamente en la  reducción de la pobreza. En consecuencia, pueden ser consideradas como un mecanismo central de la dinámica global de la pobreza. El documento contribuye a la escaza literatura que analiza cuantitativamente el papel de las multinacionales chinas en lareducción de la pobreza.
El teletrabajo como mitigador de los impactos económicos de la pandemia del COVID-19.
Authors: De la Vega Pablo , Gasparini Leonardo
Published: February 2023

Este artículo estima el papel del teletrabajo como mitigador del impacto de la pandemia del COVID-19 en el mercado laboral argentino. Para ese propósito, se analiza la relación entre el potencial de teletrabajo a nivel ocupacional estimado en base a tres encuestas diferentes (O*NET, PIAAC, y STEP), y los resultados del mercado laboral a nivel individual, explotando la estructura de paneles rotativosde la encuesta nacional de hogares. Se encontró que durante el pico de las restricciones por la pandemia, el potencial del teletrabajo estuvo positivamente relacionado con la probabilidad de estar activo y empleado. Estos efectos están concentrados en la submuestra de  trabajadores “no esenciales”. Por el contrario, no encontramos efectos sistemáticos del potencial del teletrabajo en las transiciones laborales antes de la pandemia, lo cual es un resultado consistente con nuestra estrategia de identificación.
El mito del resultado
Authors: Reyes Alvarado Yesid
Published: February 2023

El resultado no es un mito, como plantea Sancinetti. Lo que ha existido es un doble tratamiento del concepto de resultado, que impide llegar a consensos sobre su naturaleza. Mientras algunos lo identifican con cualquier modificación producida en el mundo exterior, otros lo equiparan a infracción de la norma.
The effect of financial distress on audit quality: evidence from Borsa Istanbul
Authors: Terzi Serkan , Sen Ilker Kiymetli
Published: February 2023

Purpose- The purpose of this study is to investigate the effect of financial distress on audit quality. For this purpose, the data of 227 companies traded in Borsa Istanbul were obtained.
Methodology- Correlation analysis was performed on the data obtained, and no autocorrelation was found between the variables. A multiple regression model was generated to test the hypothesis of the study.
Findings- According to the findings, a negative and significant relationship was found between financial distress and audit quality.
Conclusion- A significant relationship was found between the company size, the ratio of cash flows from operating activities to total assets, and the leverage ratio and audit quality.

Keywords: Financial distress, financial distress risk, audit quality
JEL Codes: M40, M41
Effect of managerial and operational gender diversity on financial performance: an investigation on Borsa Istanbul commercial banks
Authors: Yikilmaz Asli
Published: February 2023

Purpose- This study aims to investigate the effect of gender equality/diversity practices on financial performance at the management and operational level.
Methodology- The financial indicators of the four commercial banks included in the Bloomberg Gender Equality Index (GEI) for the years 2016-2021 have been compared with Borsa Istanbul commercial banks not included in the index through descriptive statistics. The effect of being included in the index on firm performance has been analyzed with the panel regression method. Return on assets and return on equity has been used as financial performance criteria.
Findings- The average market value/book value, return on assets and return on equity of the companies included in the gender equality index are higher than the companies not included in the index; It has been determined that the loans/deposit ratio and average asset size are lower than the companies that are not included in the index. The results of the panel regression analysis have shown that being included in the gender equality index positively affects the return on assets and return on equity.
Conclusion- Determining the positive effect of gender diversity on financial performance at the management and operational level will be a guide for practitioners, investors and regulators.

Keywords: Gender diversity, gender inequality index (GEI), financial performance
JEL Codes: C23, G30, J16
Linking inventory management and financial performance of manufacturing industry companies
Authors: Kuzucu Narman , Kuzucu Serpil
Published: February 2023

Purpose- Investments in inventories have a significant role in manufacturing companies’ operating cycles. The rapid conversion of inventories into sales and eventually the creation of profits lead to financial performance. In the study, we examine the effect of various types of inventories held by the manufacturing companies on profitability.
Methodology- We use the real sector statistics published by the Central Bank of the Republic of Turkey. In this context, we analyse the data set of 86 sub-sectors for the period from 2009 to 2021 by using the fixed effects panel data model. While gross, operating and net profit margins are dependent variables in order to examine the effect of inventory management in various levels, types of inventories relative to sales are used as independent variables in the models. Other than inventories, fixed assets turnover and manufacturing industry growth rates are included as control variables in the models.
Findings- We find that there is not a statistically significant relationship between operating profit margin and inventories other than raw materials. However, finished goods and merhandise inventories are negatively related to net profit margin. None of the inventory types are statistically related to gross profit margin. We obtain a negative relationship between profitability ratios and manufacturing industry growth rate as a control variable.
Conclusion- We conclude that the rapid conversion of finished goods and merchandise inventories into sales contributes to net profits of the manufacturing industry companies. However, holding periods of raw materials and work-in-process inventories do not have significant relationships with net profitability. Furthermore, we result that inventories are related to profit margin not at the level of gross or operating profit, rather at the level of net profitability. Accordingly, manufacturing companies should be more cautious about the holding periods of finished goods and merchandise inventories rather than of raw materials and work-in-process inventories. Findings indicate that profit margins of manufacturing companies decrease –probably due to competition– during economic upturns.

Keywords: inventory management, manufacturing industry, profitability, working capital
JEL Codes: G30, G32
PhageFISH detailed protocol v1
Authors: Jensen Ostenfeld Line
Published: February 2023

This protocol details about PhageFISh protocol.
Intelligent Street Lighting Energy-Saving System Based on Climate Conditions and Vehicle’s Movements
Authors:   Yarmouk University, Department of Electronics Engineering  Hijjawi Faculty for Engineering Technology, Irbid, Jordan, Al-Smadi Adnan , Salah Salam ,   Yarmouk University, Department of Electronics Engineering  Hijjawi Faculty for Engineering Technology, Irbid, Jordan, Al-Momani Areen ,   Yarmouk University, Department of Electronics Engineering  Hijjawi Faculty for Engineering Technology, Irbid, Jordan, Al-Bataineh Majd ,   Yarmouk University, Department of Electronics Engineering  Hijjawi Faculty for Engineering Technology, Irbid, Jordan
Published: February 2023

The huge amount of electric power and cost associated with street lighting has raised the need to investigate both cost issues and environmental concerns. Cities worldwide are increasingly investing in energy-efficient street lighting systems. Modern street lighting technology can lower energy consumption as well as operation and maintenance costs significantly. In addition, bright street lighting can reduce accidents and crime rate in the area. Street lighting is an essential public service that provides a significant factor contributing to the quality of life and productivity of people workforces. This paper proposes an intelligent and energy-efficient traffic sensing system based on the widely distributed street lights. It is intended to observe vehicle’s movement on the road and turn ON a block of street lights ahead of vehicle whenever needed. As the vehicle passes by, the system turns OFF the trailing lights. The brightness (intensity of light) of the street light is adjusted based on the surrounding using LDR sensor. Hence, the street lights will be switched ON in the evening around sunset when a vehicle passes by, and switched OFF in the morning after sunrise when there is sufficient light on the streets. In addition, the proposed system will control the intensity level of the street light using the LDR sensor. The Proteus Software Simulation of the proposed system was performed and tested. Then a hardware prototype was designed and implemented to evaluate the performance of the proposed system. This technology can save significant costs and energy.
A Case Study of Carbon Emissions from Logistic Activities During Supply Chain Disruptions
Authors:   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Amiruddin Siti Zubaidah , Hishamuddin Hawa ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Darom Noraida Azura ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Naimin Hilmi Hisyam ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia
Published: February 2023

Supply chain disruptions have significant negative effects on logistics operations, in which recovery actions could in turn affect the environment if certain green precautions are not undertaken. The objective of this research is to assess the effect of disruption on carbon emissions from logistics activities in the supply chain. A case study was carried out in this study to identify the factors of supply chain disruptions that affect logistics operations, and investigate the impact of the disruptions on the environment. Data collection using the Fuel Monitor application and real disruption data from a selected company were used to quantify the carbon emissions during disruption and non-disruption scenarios. Analysis of the study found that carbon emissions during disruption events increased to approximately 18 – 20 % as compared to normal operations. This is due to the increase in travelling distance in order to fulfill customer backorders during the disruption occurrence. The carbon emission amount was slightly higher when using fuel consumption as reference data in comparison to distance travelled, as fuel consumption takes into account the driving behaviour and efficiency of the truck engines. This study is useful for analyzing the impact of supply chain disruptions on the environment, particularly from the post-disruption recovery decisions.
Damages of Orthotropic Bridge Deck Surfacing: Forensic Investigation, Remedial Work and Performance Monitoring
Authors:   Department of Civil Engineering, Universitas Pertamina, Jakarta, Indonesia, Widyatmoko Iswandaru
Published: February 2023

Conventional mastic asphalt typically lasts for more than two decades when being used as bridge surfacing. However substantial increase in heavy goods traffic and higher axle loading has led to some severe cracks in the surfacing during the first ten years since opening to traffic. A forensic investigation into the defects was subsequently carried out. The investigation comprised site inspection, reviewing available records, laboratory testing, designing new surfacing system and recommending remedial actions. The site inspection identified structural and functional damages, which were subsequently assessed in the laboratory on samples taken from site followed by detailed analysis. Laboratory assessments included stiffness, tensile strength and rheology of the existing mastic asphalt surfacing and the waterproofing layer. These suites of testing were followed by Finite Element Models (FEMs) which were developed specifically to analyze movements of the deck, including the cantilever and the main decks, for a range of traffic levels and speeds, considering the mechanical properties determined from the laboratory tests. From the review of literatures and worldwide case studies, three alternative surfacing system options were identified. Prediction of the residual life of the existing surfacing and the projected life of the recommended replacement systems were analyzed. The effect of super single wheel loading on the proposed system was also assessed. Based on the relative performance of these options, recommendations were presented to improve the surfacing design for use in the interim maintenance and remedial works. Follow up works included monitoring the in service performance of the interim solution since opening to traffic. For the future major rehabilitation works, three alternative options have been advised to replace the current surfacing system. The benefits of each of these options have also been presented to assist with decision making, in consideration of the cost and the technical side.
VIRULICIDAL EFFECT OF THE PROBIOTIC DRUG "SVITECO-MULTI" ON POLIOVIRUS TYPE 1 AND INFLUENZA VIRUS
Authors:   SI ", Mironenko Alla ,   L.V. Gromashevsky Institute of Epidemiology and Infectious Diseases NAMS of Ukraine", Holubka Olha ,   SI "L.V. Gromashevsky Institute of Epidemiology and Infectious Diseases NAMS of Ukraine", Radchenko Larysa ,   SI "L.V. Gromashevsky Institute of Epidemiology and Infectious Diseases NAMS of Ukraine", Zakharchuk Iryna ,   SI "The Institute of Traumatology and Orthopedics" by NAMS of Ukraine, Teteriuk Nataliia ,   SI "L.V. Gromashevsky Institute of Epidemiology and Infectious Diseases NAMS of Ukraine"
Published: February 2023

The experimental work shows the antiviral activity of the probiotic drug "Sviteco-Multi" which contains bacteria of the genus Bacillusin model system in cell culturesMDCKandHEp-2, against influenza A (H1N1)pdm2009 virus and vaccine poliovirus type 1, which allows to recommend it for use, in particular, as an alternative to traditional antiviral disinfectants.