bluuebunny/crossref_metadata_2025 huggingface dataset:
Can the integration of sports and health industries drive the upgrade of the sports industry?—An empirical study based on Chinese-style modernization
Authors: Liu Jun , Lin Xun , Dong Fengwei
Published: February 2024

Background

In the course of China’s modernization, the sports industry’s advancement plays a dual role in enhancing national health and driving economic transformation. The integration and coalescence of the sports and health sectors have emerged as pivotal avenues for the structural elevation of China’s sports industry. Hence, empirically scrutinizing the influential mechanisms and outcomes of sports and health industry integration on the sports industry’s structural enhancement holds substantial practical significance.

Method

This study formulates theoretical hypotheses regarding the impact mechanism of sports and health industry integration on the sports industry’s sophisticated industrial structure. Drawing insights from literature review and categorization, three dimensions—industrial integration, government role, and market mechanism—are delineated. Employing panel data spanning 2015 to 2020 from four primary Chinese cities, an econometric model is devised to empirically dissect the influence of sports and health industry integration on the sports industry’s structural advancement.

Findings

The three pivotal explanatory variables—integration of sports and health industries, government role, and market mechanism—exert a positive influence on the sports industry’s sophisticated industrial structure. Notably, the impact of market mechanisms outweighs that of government roles, with government roles exhibiting comparatively weaker individual impact effects.

Conclusion

The dynamic development process characterizing the structural advancement of China’s sports industry in first-tier cities exhibits positive and sustained developmental traits, with discernible convergence in trends. While market mechanisms demonstrate a more immediate and pronounced direct promotional effect than government roles, the enduring influence of government roles over an extended timeframe is evident from a dynamic long-term development perspective. Building upon these findings, the study suggests relevant stakeholders foster advanced sports industry structures by: refining the integration system of sports and health industries; fortifying the fundamental role of market mechanisms; and fully leveraging the government’s impact in promoting sports and health industry integration.
Enhancing our understanding of short-term rental activity: A daily scrape-based approach for Airbnb listings
Authors: Wang Yang , Livingston Mark , McArthur David P. , Bailey Nick
Published: February 2024

The growth of the online short-term rental market, facilitated by platforms such as Airbnb, has added to pressure on cities’ housing supply. Without detailed data on activity levels, it is difficult to design and evaluate appropriate policy interventions. Up until now, the data sources and methods used to derive activity measures have not provided the detail and rigour needed to robustly carry out these tasks. This paper demonstrates an approach based on daily scrapes of the calendars of Airbnb listings. We provide a systematic interpretation of types of calendar activity derived from these scrapes and define a set of indicators of listing activity levels. We exploit a unique period in short-term rental markets during the UK’s first COVID-19 lockdown to demonstrate the value of this approach.
Unveiling the affecting mechanism of digital transformation on total factor productivity of Chinese firms
Authors: Fu Zhiyuan , Madni Ghulam Rasool
Published: February 2024

The importance of digital transformation (DGT) for increasing productivity cannot be negated and Chinese firms are rapidly embracing the digital transformation for their sustainability. But the mechanism and impact of digital transformation on total factor productivity (TFP) of firms is still unclear and this study is intended to fill this gap using the data of 3112 listed firms of China during 2011 to 2022. We applied various econometric techniques like stepwise regression analysis, instrumental variable approach, differences in difference approach, and mediating analysis to determine the relationship between digital transformation and TFP and robustness of estimated findings. The findings indicate that DGT has a positive impact on overall TFP of firms in China while operating efficiency, cheaper costs, and a stronger capacity for innovation mediates this relationship. Moreover, it is explored that conventional information and communication technologies have not significant impact on TFP of firms. The findings of the study remain valid even applying many robustness checks and attempts to control the issue of endogeneity. To fully leverage the potential benefits of digital transformation on TFP, it is essential to focus on enhancing digital literacy and skills among the workforce. Governments and relevant stakeholders should prioritize and invest in comprehensive digital literacy and skills training programs to empower the workforce with the knowledge and expertise needed to navigate the digital age effectively.
N123I mutation in the ALV-J receptor-binding domain region enhances viral replication ability by increasing the binding affinity with chNHE1
Authors: Yu Mengmeng , Zhang Yao , Zhang Li , Wang Suyan , Liu Yongzhen , Xu Zhuangzhuang , Liu Peng , Chen Yuntong , Guo Ru , Meng Lingzhai , Zhang Tao , Fan Wenrui , Qi Xiaole , Gao Li , Zhang Yanping , Cui Hongyu , Gao Yulong
Published: February 2024

The subgroup J avian leukosis virus (ALV-J), a retrovirus, uses its gp85 protein to bind to the receptor, the chicken sodium hydrogen exchanger isoform 1 (chNHE1), facilitating viral invasion. ALV-J is the main epidemic subgroup and shows noteworthy mutations within the receptor-binding domain (RBD) region of gp85, especially in ALV-J layer strains in China. However, the implications of these mutations on viral replication and transmission remain elusive. In this study, the ALV-J layer strain JL08CH3-1 exhibited a more robust replication ability than the prototype strain HPRS103, which is related to variations in the gp85 protein. Notably, the gp85 of JL08CH3-1 demonstrated a heightened binding capacity to chNHE1 compared to HPRS103-gp85 binding. Furthermore, we showed that the specific N123I mutation within gp85 contributed to the enhanced binding capacity of the gp85 protein to chNHE1. Structural analysis indicated that the N123I mutation primarily enhanced the stability of gp85, expanded the interaction interface, and increased the number of hydrogen bonds at the interaction interface to increase the binding capacity between gp85 and chNHE1. We found that the N123I mutation not only improved the viral replication ability of ALV-J but also promoted viral shedding in vivo. These comprehensive data underscore the notion that the N123I mutation increases receptor binding and intensifies viral replication.
A modified zero energy critical point theory with applications to several nonlocal problems
Authors: Liang Xinzhong , Zhang Binlin
Published: February 2024

In this paper, we devote ourselves to considering a modified zero energy critical point theory for a specific set of functionals denoted as

Φ

μ

, defined within the confines of a uniformly convex Banach space. Integrating the nonlinear generalized Rayleigh quotient approach with Ljusternik–Schnirelman category, we establish the nonexistence and multiplicity of zero energy critical points of the involved functionals. In particular, the modified zero energy critical point theory can be applied to more nonlocal problems. Our main results improve and complement the existing results in the related literature.
Weighted Lorentz estimates for subquadratic quasilinear elliptic equations with measure data
Authors: Yao Fengping
Published: February 2024

In this work we mainly prove the following interior gradient estimates in weighted Lorentz spaces

g

−
1

[

M

1

(
μ
)

]

∈

L

w
,
l
o
c

q
,
r

(
Ω
)
⟹

|

D
u

|

∈

L

w
,
l
o
c

q
,
r

(
Ω
)
,
where
g
(
t
)
=
t
a
(
t
)
for
t
≥
0
and

M

1

(
μ
)
(
x
)
is the first-order fractional maximal function

M

1

(
μ
)
(
x
)
:=

sup

r
>
0

r

|

μ

|

(

B
r

(
x
)
)

|

B
r

(
x
)

|

,
for a class of non-homogeneous divergence quasilinear elliptic equations with measure data in the subquadratic case

−
div
⁡

[

a

(

(

A
D
u
⋅
D
u

)

1
2

)

A
D
u

]

=
μ

in

 
Ω
,
whose model cases are the classical elliptic
p
-Laplacian equation with measure data

−
div
⁡

(

|

D
u

|

p
−
2

D
u

)

=
μ

for 

1
<
p
<
2

and the elliptic
p
-Laplacian equation with the logarithmic term and measure data

−
div
⁡

(

|

D
u

|

p
−
2

D
u

)

=
μ

for 

1
<
p
<
2

It deserves to be specially noted that the subquadratic case is a little different from the superquadratic case since as an example, the modulus of ellipticity in the above-mentioned special cases tends to infinity when

|

D
u

|

→
0

for
1
<
p
<
2
.
STRATEGIC VECTOR OF DEVELOPMENT OF THE AGRO-INDUSTRIAL COMPLEX OF RUSSIA ON THE FOREIGN ECONOMIC COURSE
Authors: Kundius V. A. , Pershina E. V.
Published: February 2024

The article presents the results of a study of trends and prospects of foreign economic activity, priorities of export of agro-industrial products in Russia and the Altai Territory in the conditions of sanctions foreign policy restrictions using methods of strategic economic analysis and expert assessments. The prospects for the development of foreign economic activity in the field of agriculture, taking into account the diversification of foreign markets, are revealed. The agro-industrial business is offered the appropriate resources and ways to find solutions for changing the orientation in foreign markets. In order to maintain the achieved level of exports of agricultural products and its further development, it is necessary to intensify measures to support all market participants. The favorable geographical location of the country, its productive resources and the previously planned course for the development of exports are the foundation for the further development of the foreign economic course in difficult modern conditions. The constraining factors are: the lack of knowledge of new markets, which affects the efficiency of changing the direction of exports by agricultural enterprises; the culture of consumption and the peculiarities of trade in Africa, Southeast Asia, India; the formation of new logical chains, the insufficiency of innovative industries in terms of technological sovereignty, the production of organic agricultural and food products.
Isolated AL Amyloidosis of the Colon: A Rare Presentation
Authors: Garcia Alexander , Qureshi Mahir , Dhawan Ishita , Rafferty William , Budak-Alpdogan Tulin , Giordano Samuel
Published: February 2024

Amyloidosis is a group of rare deposition diseases marked by the accumulation of abnormal fibrillar proteins in the extracellular space of various tissues. In both AL and AA amyloidosis, the most common variants, isolated involvement to any one organ is uncommon and involvement to the colon alone is especially rare. We present the case of a patient who was initially found to have AL amyloidosis on prior screening colonoscopy that was reconfirmed several years with repeat evaluation for chronic constipation. This disease process is often insidious and can be overlooked by providers given the lack of overwhelming symptoms.
Non-invasive evaluation of testicular torsion using ultrasound shear wave elastography: an experimental study
Authors: Lin Yunyong , Lu Wenjie , Li Guojing , Mao Lin , Ouyang Liangyan , Zhu Zhimin , Chen Shiyan , Liang Peixian , Jin Haowei , Gao Linlin , Liang Jianjing , Qiu Shaodong , Chen Fei
Published: February 2024

Purpose: The goal of this study was to examine changes in testicular stiffness at various intervals after the induction of testicular torsion, as well as to assess the predictive value of testicular stiffness for testicular spermatogenesis after torsion.Methods: Sixty healthy male rabbits were randomly assigned to one of three groups: complete testicular torsion, incomplete testicular torsion, or control. All rabbits underwent preoperative and postoperative scrotal ultrasonography, including shear wave elastography (SWE), at predetermined intervals. Changes in SWE values were analyzed and compared using repeatedmeasures analysis of variance. To assess the diagnostic performance of SWE in determining the degree of spermatogenic function impairment, the areas under the receiver operating characteristic curves (AUCs) were calculated.Results: SWE measurements in both central and peripheral zones of the testicular parenchyma affected by torsion demonstrated significant negative correlations with spermatogenesis, with coefficients of r=-0.759 (P<0.001) and r=-0.696 (P<0.001), respectively. The AUCs of SWE measurements in the central or peripheral zones of the torsed testicular parenchyma were 0.886 (sensitivity, 83.3%; specificity, 100%) and 0.824 (sensitivity, 83.3%; specificity, 73.3%) for distinguishing between hypospermatogenesis and spermatogenic arrest, respectively (P=0.451, DeLong test).Conclusion: Variations in the stiffness of both central and peripheral regions of the testicular parenchyma correlate with the extent and duration of torsion, exhibiting a specific pattern. The "stiff ring sign" is the characteristic SWE finding associated with testicular torsion. SWE appears to aid in the non-invasive determination of the extent of spermatogenic damage in torsed testes.
The Impact of the US-China Economy on the Economic Growth of OIC Member Countries
Authors: Fakhrunnas Faaza , Fadillah Abi
Published: February 2024

As countries having sizeable economic scale, the US and China have significant contributions as well as influence on the world economy. Hence, the economic activities performed by both countries have a higher possibility to affect other countries’ economic conditions due to the presence of economic integration among the countries. The study aims to investigate the US-China economy impact which is proxied by a balance of trade (BOT), net foreign direct investment (FDI), and exchange rate (ER) on the economic growth of OIC member countries (EG). The study utilizes data from 1979-2018 and adopts Autoregressive Distributed Lag (ARDL) then applies a bounds testing approach to measure the short and long-run relationship between independent and dependent variables. The finding of the study shows that there is a long-run cointegration between the US-China economy impact on the economic growth of OIC member countries. The short-run ARDL model also indicates that all the independent variables have a significant relationship with the economic growth of OIC member countries across the regions.
Originality/Value: The study comprehends as well as provides a new insight on the influence of the US and China's economic activities on OIC member countries’ economies.
Role of increased IGFBP2 in trophoblast cell proliferation and recurrent spontaneous abortion development: A pilot study
Authors: Ji Li , Jiao Ziying , Zhang Lin , Shi Jia , Wan Qianqian , Qian Chunzhi , Wang Han , Cao Xiaoyan , Shen Bing , Jiang Lijuan
Published: February 2024

Recurrent spontaneous abortion (RSA) is a serious condition that adversely affects women's health. Differentially expressed proteins (DEPs) in plasma of patients experiencing RSA is helpful to find new therapeutic targets and identified with mass spectrometry. In 57 DEPs, 21 were upregulated and 36 were downregulated in RSA. Gene ontology analyses indicated that identified DEPs were associated with cell proliferation, including significantly downregulated insulin‐like growth factor binding protein 2 (IGFBP2). Immunohistochemical result using clinical decidual tissues also showed that IGFBP2 expression was significantly decreased in RSA trophoblasts. Cell proliferation assay indicated that IGFBP2 treatment increased the proliferation and mRNA expressions of PCNA and Ki67 in trophoblast cells. Transcriptome sequencing experiments and Kyoto Encyclopedia of Genes and Genomes analyses revealed that gene expression for components in PI3K‐Akt pathway in trophoblasts was significantly upregulated following IGFBP2 treatment. To confirm bioinformatics findings, we did cell‐based experiments and found that treatment of inhibitors for insulin‐like growth factor (IGF)‐1 receptor‐PI3K‐Akt pathway significantly reduced IGFBP2‐induced trophoblast cell proliferation and mRNA expressions of PCNA and Ki67. Our findings suggest that IGFBP2 may increase trophoblast proliferation through the PI3K‐Akt signaling pathway to affect pregnancy outcomes and that IGFBP2 may be a new target for future research and treatment of RSA.
Molecular dynamics simulations of the local structure and physicochemical properties of CaCl2molten salt
Authors: Li Hui , Wei Xuexue , Liang Jinglong , Cao Weigang , Cai Zongying , Yang Yu
Published: February 2024

CaCl2molten salt, as a common electrolyte in the process of molten salt electrolysis, has a high decomposition potential and a strong ability to bind O2−. So the study of the structure and properties of CaCl2is significant for the molten salt electrolysis. In this paper, molecular dynamics simulations (MD) method was used to investigate the variation rule of the local structure and physicochemical properties of CaCl2molten salt with temperature. The results show that the temperature has less effect on the heterozygous ion pairs and more effect on the homozygous ion pair. With the increase of temperature, the interaction between ion pairs is weakened, the coordination number decreases, the local structure changes a little, and the structural configuration tends to be an irregular octahedral structure with vacancies. The calculated self-diffusion coefficients, viscosities, and ionic conductivities are consistent well with the reality, but there is a significant error in densities due to the strong polarization effect of Ca2+compared to the reality. The local structure directly determines the thermodynamic properties of the molten salts. This study promotes the basic theoretical research on alkaline earth metal-containing molten salts and is an important reference for the study of molten salt electrolysis process.
Uniqueness solution for bounded n-linear functional using generalized nonexpansive type
Authors: Hardan Basel , Hamoud Ahmed A. , Patil Jayashree , Abdallah Alaa A. , Emadifar Homan , Khademi Masoumeh , Ghadle Kirtiwant P.
Published: February 2024

Using the class of

(

μ
,
σ

)

\left(\mu ,\sigma )

-nonexpansive mappings, we will effectively prove the uniqueness of the approximative fixed points set for equivalent

n

n

-linear functional spaces

F

{\mathscr{F}}

, where

F

{\mathscr{F}}

is nonempty and identical in every bounded case in

n

n

-Banach space.
Historia de los caballos en crónicas relativas a la exploración y conquista española de las Antillas
Authors: Perezgrovas Garza Raúl Andrés
Published: February 2024

Se compiló y sistematizó la historia americana sobre los caballos, revisando su embarque en España (1493) y su devenir en las Antillas hasta la expedición de Hernán Cortes desde Cuba (1519). Se consultaron documentos coloniales y textos contemporáneos sobre la temática, aplicando un enfoque multidisciplinario. Los Reyes Católicos querían fundar una colonia en tierras americanas y sufragaron naves, marineros, colonos y animales; se examinó su adquisición, embarque y alimentación durante la ruta trasatlántica. Los caballos costaban más que otros animales, y vinieron oficiales con sus cabalgaduras. Colón pretendía multiplicar animales domésticos y por ello prefirió embarcar hembras. Tras prolongada travesía (14 semanas), gente y caballos llegaron enfermos y desembarcaron con premura en La Española. Los viajes hacia las Antillas continuaron, y los animales europeos siguieron llegando. Los caballos se multiplicaron con rapidez al comenzar el siglo XVI y se dispersaron por todas las islas antes del viaje de Hernán Cortés.
Propiedades psicométricas de la escala SOC-13 en una muestra de diabéticos mexicanos
Authors: Márquez-Palacios Jesús Humberto , Salazar-Estrada Jose , Urzua Morales Alfonso , Calderón Carvajal Carlos
Published: February 2024

El sentido de coherencia (SOC, por sus siglas en inglés) ha mostrado diversos beneficios en el estado de salud de personas con diabetes. El objetivo del estudio fue evaluar las propiedades psicométricas de la versión de 13 ítems de la escala de orientación a la vida en español. Se realizó un estudio de tipo instrumental donde participaron 220 personas diagnosticadas con diabetes tipo 2. La confiabilidad se evaluó por medio del coeficiente omega de McDonalds (0.79) y alfa de Cronbach (0.78); para evaluar la validez de constructo se realizó un análisis factorial confirmatorio. Los resultados indican que se replica la solución de tres factores (RMSEA = 0.08, CFI = 0.91, TLI = 0.90) propuesta por el autor del instrumento, aportando evidencia sobre la escala de orientación a la vida de 13 ítems como un instrumento válido y confiable para ser aplicado en población mexicana con diabetes.
Public Stigma and Continuum Beliefs Across Personality Disorder Severity Levels
Authors: Stricker Johannes , Hasenburg Laureen , Jakob Louisa , Weigl Tobias , Pietrowsky Reinhard
Published: February 2024

Stigmatizing attitudes toward persons with personality disorders are common. Preliminary evidence suggests that continuum beliefs (the view that presented symptoms lie on a continuum with normality) are associated with reduced personality disorder stigma. This study aimed to evaluate whether this association holds across the entire spectrum of personality disorder severity and whether greater personality disorder severity is linked to higher stigma. A general population sample (N = 848) completed questions about a vignette depicting mild, moderate, or severe personality disorder severity. Higher continuum beliefs were associated with a lower desire for social distance from persons with mild, moderate, or severe personality disorder. In addition, continuum beliefs were higher, and the desired social distance was lower toward a person with mild than a person with moderate or severe personality disorder. Thus, fostering continuum beliefs might aid in combating personality disorder stigma, including toward severely affected persons who experience strong stigmatization.
Pre- versus Post-synaptic Forms of LTP in Two Branches of the Same Hippocampal Afferent
Authors: Quintanilla J. , Jia Y. , Pruess B. S. , Chavez J. , Gall C. M. , Lynch G. , Gunn B. G.
Published: February 2024

There has been considerable controversy about pre- versus postsynaptic expression of memory-related long-term potentiation (LTP), with corresponding disputes about underlying mechanisms. We report here an instance in male mice, in which both types of potentiation are expressed but in separate branches of the same hippocampal afferent. Induction of LTP in the dentate gyrus (DG) branch of the lateral perforant path (LPP) reduces paired-pulse facilitation, is blocked by antagonism of cannabinoid receptor type 1, and is not affected by suppression of postsynaptic actin polymerization. These observations are consistent with presynaptic expression. The opposite pattern of results was obtained in the LPP branch that innervates the distal dendrites of CA3: LTP did not reduce paired-pulse facilitation, was unaffected by the cannabinoid receptor blocker, and required postsynaptic actin filament assembly. Differences in the two LPP termination sites were also noted for frequency facilitation of synaptic responses, an effect that was reproduced in a two-step simulation by small adjustments to vesicle release dynamics. These results indicate that different types of glutamatergic neurons impose different forms of filtering and synaptic plasticity on their afferents. They also suggest that inputs are routed to, and encoded by, different sites within the hippocampus depending upon the pattern of activity arriving over the parent axon.
THEORETICAL AND EXPERIMENTAL RECOMMENDATIONS FOR THE ELIMINATION OF GRINDING CRACKS DURING THE PROCESSINGOF PERMANENT MAGNETS
Authors:   Odessa Polytechnic National University, Usov A. , Kunitsyn M. ,   Odessa Polytechnic National University, Zaychyk Yu. ,   Odessa Polytechnic National University
Published: February 2024

The manufacturing technology of permanent magnets has high precision characteristics and is based on extreme dependencies of physical and mechanical properties of magnets from the contents of the alloy, crystalline structure and temperature and force factors during their processing. Grinding of magnets in high-coercivity state relates to low productivity and relatively high flaw regarding cracks and scratches. Quality analysis of the preliminary and terminal size processing of permanent magnets shows that the main defects of the magnets are microcracks, surface cracks, chips. Their appearance during the grinding of the magnets is the consequence of relatively low mechanical characteristics of the alloys, wrong choice of characteristics of the grinding wheel, breaking proper grinding modes, presence of the defects that were formed during the previous technological stages of permanent magnets manufacturing. The objective of this research is the development of theoretical and experimental recommendations for eliminating grinding cracks during permanent magnets processing. The mechanism of grinding cracks appearance was considered regarding to the influence of geometry of structural components and their orientation related to the direction of grinding of the magnets in high-coercivity state. The problem of defining stress-strain state of the surface layer of the grinded magnets in high-coercivity state weakened by the system of foreign inclusions was solved. Analytical balance conditions of the structural defects of hard magnet alloys depending on the coefficient of crack resistance and the value of the contact temperature of grinding which is defined by the technological parameters were discovered. These technological parameters make possible the building of the algorithm for choosing technological parameters that provide the required quality of the processed surfaces. Technological backgrounds for controlling quality characteristics of the parts being grinded using the criteria of maximum allowable temperatures of grinding, heat flow, size of structural parameters, cutting forces, crack resistance coefficients were developed.
FEATURES AND DEVELOPMENT PROSPECTS OF THE ODESSA REGION IN THE ENERGY SYSTEM OF UKRAINE
Authors:   Odessa Polytechnic National University, Kozlov I. , Kovalchuk V. ,   Odessa Polytechnic National University, Holovin M. ,   Odessa Polytechnic National University, Vistiak S. ,   Odessa Polytechnic National University
Published: February 2024

In the modern world, energy is the basis of the development of basic industries, which determines the progress of public production. The growing need to use electricity poses problems in finding sources of its generation. The main problem of choosing sources of electricity production is the impact of energy on the environment. Many countries focus their energy development strategy on renewable energy sources (RES) (solar, wind, bio and others). However, due to their specificity, renewable energy sources cannot ensure the production of the required amount of electricity. The key problem of renewable energy sources is to ensure an uninterrupted supply of energy to end users. In the work, a comparative analysis of the state of the structure of energy resources and their availability in the southern region of Ukraine was carried out. The problem of ensuring energy and environmental security of the Odesa region in conditions of a shortage of traditional energy resources is considered. The current state and prospects of the use of renewable energy sources are considered. Using the method of expert evaluations to justify the choice of the type of acceptable energy source and increase the relative energy security of individual territories, the use of nuclear energy is substantiated. The prospects of placing new power units with the AP1000 reactor unit developed by the Westinghouse Electric Company on the territory of the former construction site of the Odesa Nuclear Thermal Power Plant (Teplodar) were considered. The technical characteristics of the AP 1000 project are given. The obtained results can be the basis of objective assessments regarding the prospects of using nuclear energy to increase the energy security of the Odesa region. The relevance of the work is determined by the importance of international cooperation in atomic energy, which is a strategically significant, innovation-intensive branch of the modern world economy in the conditions of development of the Odesa region.
ALGORITHM FOR ONLINE COEFFICIENT CORRECTION ARTIFICIAL NEURAL NETWORK IN MPPT CONTROLLERS FOR SOLAR BATTERIES
Authors:   Odessa Polytechnic National University, Tigariev V. , Lopakov A. ,   Odessa Polytechnic National University, Kosmachevskiy V. ,   Odessa Polytechnic National University, Andriianov O. ,   Odessa Polytechnic National University
Published: February 2024

The main element of solar power plants is usually a power cascade (DC/DC converter, inverter). Converters in such generation systems should have high efficiency (at least 90%), high output signal quality and ensure operation of the power plant with maximum selection of power from the solar battery. The characteristics of solar panels depend heavily on weather conditions such as light and temperature. During the day, the temperature and power of the solar generator are constantly changing. These changes result in a shift in the maximum power point and a partial loss of power. In order to obtain the maximum possible power from the solar battery, it is necessary to use the appropriate maximum power point tracking algorithm (MPPT). For MPPT, specialized controllers are used, which use one of the algorithms to optimize the working point of the photomodules. The most commonly used methods are perturbation and observation, increasing conductivity, constant voltage. The maximum power point tracking method used will largely determine the efficiency of the photovoltaic generation system. Maximum power recovery from solar panels is possible only when the battery voltage is continuously regulated at an optimal operating point. Thus, the design and development of modern efficient photovoltaic generation systems should address not only the improvement of high efficiency solar cell technology, but also a number of issues of designing photovoltaic converters and their control systems to significantly improve their energy efficiency.
Recovery of unpaid funding by beneficiaries of EU funds
Authors:   University of Warsaw, Poland, Brysiewicz Krzysztof
Published: February 2024

The purpose of the article is to analyze the issue of pursuing claims for payment by beneficiaries of EU funds. The author analyzed the jurisprudence of Polish courts in cases concerning EU funds, as well as literature devoted to these issues. Based on the article, the issue of legal bases of beneficiaries' claims related to the refusal to pay EU funds on the basis of co-financing agreements is analyzed. Attention was drawn to the important role of compensation and payment proceedings as legal instruments enabling the fulfilment of the Member State's tasks in the prevention of irregularities. The issue of the possibility of treating unpaid funding as damage in the sense of lost profits was also analyzed. The article discusses the grounds of causation between the improper operation of the institution refusing to pay the subsidy and the damage suffered by the beneficiaries. Beneficiaries on the basis of a co-financing agreement may pursue both claims for payment, i.e. for performance of the service, as well as claims for damages. Claims for damages require proof of damage and a causal link between the unlawful act of the institution and the damage. Damage may also be an amount equivalent to the value of the grant that the beneficiary would have obtained if it had not been for the improper performance of the contract by the institution.
Member States' obligations resulting from wasteful spending funds in the implementation of projects co-financed by EU funds in the light of the EU law. Searching for a common standard for management and control systems
Authors:   University of Warsaw, Faculty of Law and Administration, Poland, Poreżyńska Magdalena
Published: February 2024

This study aims to verify whether despite the generally formulated obligations in EU law intended to ensure that European funds are spent correctly, it is possible to clearly identify the scope of these obligations, and at the same time specify the standard recommended by the EU for national management and control systems. Author primarily uses the formal-dogmatic method to analyze the relevant EU law, the decision-making practice of the European bodies involved in the protection of EU financial interests, the Court’s case-law and the legal doctrine. Due to the lack of clearly recommended model at EU level while generally formulated conditions (especially those resulting from the Charter of Fundamental Rights) that need to be considered by Member States when designing their management and control systems, it is difficult to ensure that the systems are effective which is crucial for guarantee the protection of EU financial interests. The analysis showed that the problem starts at the source as the implementation of both fraud and irregularity concepts varies across Member States which significantly hinders their correct identification. To assist Member States in implementation of management and control systems, the respective guidelines adopted at EU level summarizing the key requirements applicable to national authorities involved in distribution of EU funds are worth considering.
Legal consequences of exhaustion of the amount allocated for co-financing of projects under the appeal procedure in the 2021-2027 financial perspective
Authors:   Białystok University of Technology, Institute of Forest Sciences, Poland, Snarski Sławomir Jerzy , Martyniuk Marek ,   County Office in Bielsk Podlaski, Poland
Published: February 2024

Analysis and assessment of the legal effects of exhausting the amount allocated for co-financing of projects under the appeal procedure in the system of implementation of the EU cohesion policy in Poland in the 2021-2027 financial perspective. Literature review, analysis of relevant legal regulations and the jurisprudence of administrative courts. The provisions of the Act on the rules for the implementation of tasks financed from European funds in the 2021-2027 financial perspective erroneously equate the exhaustion of the amount allocated for co-financing of projects under a measure or region category with the sum of funds distributed by concluding agreements or issuing administrative decisions on project co-financing. They do not take into account the fact that due to, e.g. the availability of additional financial resources resulting from termination of co-financing agreements or an increase in the euro exchange rate, the exhaustion of the allocation may change until the end of programme’s implementation period. It is necessary to shape the appeal procedure in such a way that will provide the applicants with a real chance of obtaining co-financing, because the implementation and protection of their constitutional rights cannot depend on the exhaustion of the available allocation of financial resources.
The role and tasks of experts under the Act on the principles of implementing tasks financed from European funds in the 2021-2027
Authors:   Wyższa Szkoła Administracji Publicznej w Szczecinie, Poland, Kuligowski Rafał
Published: February 2024

Poland is the largest beneficiary of funds from the European Union budget. Thus, countless projects that will receive support from these funds are being implemented in our country. In order to obtain funding, you must take part in a competitive, transparent and transparent competition organized by competent institutions. However, they are obliged to reliably assess these applications. Often, in order to be able to assess them, professional knowledge, experience and specific qualifications are required. These are not always owned by qualified clerical staff. For this purpose, based on many years of experience, the legislator in the Act on the rules for the implementation of tasks financed from European funds in the 2021-2027 financial perspective again enabled the competent institutions to use the substantive support of experts. The purpose of this article is to analyze the statutory duties and tasks of experts through the prism of the Act, taking into account the current practice, experience and jurisprudence. The purpose of this article is to analyze the legal solutions regarding the duties and rights of experts in the process of evaluating applications for co-financing from the European Union budget. The article uses the legal - comparative and historical method. On the basis of the conducted research, it should be clearly stated that the essence and basis for the functioning of experts in the application evaluation process have not changed in the new financial perspective. Guarantees of independence have been increased, and transparency in the work of experts has been increased.
Hypothyroxinaemia during gestation is associated with low ferritin and increased levels of inflammatory markers
Authors: Pop Victor J M , Krabbe Johannes G , Broeren Maarten , Wiersinga Wilmar , Rayman Margaret P
Published: February 2024

Objective

Pregnancy is a state of physiological inflammation facilitating implantation. Early isolated hypothyroxinaemia (IH) and increased inflammation (including obesity) have been associated with severe obstetric complications. The current study evaluated the association between IH, low ferritin and inflammation parameters (interleukin 6 (IL-6), C-reactive protein (CRP), human chorionic gonadotrophin (hCG) and obesity. Moreover, the course of these parameters throughout pregnancy was evaluated in relation to IH.

Methods

In the cross-sectional study (A) at 12 weeks, 2759 women participated and 2433 participated in the longitudinal study (B) with assessments at 12, 20 and 28 weeks gestation. At the first trimester, 122 (4.4%) IH women (free thyroxine (FT4) <5th percentile, normal TSH levels) were compared with 2114 (76.6%) reference women (FT4 between tenth and 90th percentiles, normal thyrotrophin (TSH) levels), in study B these figures were 99 (4.1%) and 1847 (75.9%), respectively.

Results

Cross-sectionally, compared to reference women, IH was independently associated with low ferritin (<5th percentile, OR: 2.6, 95% CI: 1.4–4.9), high CRP (>95th percentile: OR: 1.9, 95% CI: 1.04–3.7), low hCG ( 30, OR: 1.7, 95% CI: 1.12.9) and higher age (OR: 1.1, 95% CI: 1.04–1.15). Longitudinally, compared to reference women, women with IH at 12 weeks gestation showed persistently and significantly lower ferritin and hCG levels, and persistently higher CRP and IL-6 levels throughout gestation.

Conclusion

Gestational IH could be viewed as a condition of increased inflammation, as reported in non-thyroidal illness syndrome. Less favourable inflammation parameters and low iron status during early gestation in IH women seem to persist throughout gestation.
Bibliografía seleccionada y comentada sobre prejuicios lingüísticos, ideas erradas y mitos referidos al lenguaje
Authors: Longa Martínez Victor M.
Published: February 2024

Los seres humanos asumen prejuicios de todo tipo; por desgracia, el lenguaje, como rasgo humano fundamental, no está libre de ellos. En la sociedad están muy extendidos numerosos prejuicios lingüísticos y mitos sobre el lenguaje que son muy nocivos, pues fomentan la discriminación de personas o grupos y, en el fondo, son una expresión de racismo. Como estudiosos del lenguaje, una tarea de los lingüistas es luchar contra ellos, por razones vinculadas con el compromiso y responsabilidad social de este colectivo. Este trabajo muestra algunos de esos esfuerzos, seleccionando y comentando 136 trabajos que discuten críticamente y rechazan prejuicios, ideas erradas y mitos sobre el lenguaje, las lenguas y las variedades.
ВПЛИВ ЗАНЯТЬ ОЗДОРОВЧИМИ ВИДАМИ ГІМНАСТИКИ НА ОРГАНІЗМ ЖІНОК 18-20-ти РОКІВ
Authors: Васкан Іван , Єремія Яна , Комарова Тетяна
Published: February 2024

Метою статті є вивчення впливу оздоровчих видів гімнастики на стан організму жінок (віком 18-20-ти років). Методи. Аналіз, узагальнення, систематизація даних наукових досліджень та літе-ратурних джерел, педагогічний експеримент. Результати. В статті розглядаються проблемні питання впливу занять фізичними вправами на організм жінок 18-20-ти років, вивчено мотивацію до занять спортом у студенток І–ІІІ курсів, проаналізовано залежність фізичного стану організму жінки від занять фізичними вправами, зокрема – оздоровчими видами гімнастики. Висновки. Проведене до-слідження показало, що основним мотивом до занять оздоровчими видами гімнастики жінки визначають удосконалення форм фігури, зниження ваги, розвиток фізичних якостей, зміцнення здоров’я, підвищення впевненості у собі. Фізичний розвиток студенток, які займаються фітнесом та аеробікою, характеризується вірогідно більшим розвитком саме тих фізичних якостей, які безпосередньо розвиваються при виконанні специфічних вправ оздоровчих видів гімнастики, що зумовлює висновок про ефективний вплив занять оздоровчими видами гімнастики на фізичний розвиток студенток.
ОЦІНКА ПОКАЗНИКІВ ЗМАГАЛЬНОЇ ДІЯЛЬНОСТІ RUGBY EUROPE CHAMPIONSHIP 2022
Authors: Квасниця Олег , Тищенко Валерія
Published: February 2024

Мета. Проаналізувати показники змагальної діяльності збірних команд-учасниць турніру Rugby Europe Championship-2022. У статті наведено результати педагогічного спостереження й порівняль-ного аналізу основних показників змагальної діяльності у регбі-15 серед чоловічих команд. Методи. Да-ними для дослідження слугували відеоматеріали і протоколи ігор, які було опрацьовано, проаналізовано й вивчено. Розглянуто показники компонентів змагальної діяльності п’яти команд, які брали участь у турнірі Rugby Europe Championship. Результати. У відповідності статистичних даних встановлено, що за більшістю показниками змагальної діяльності гравці збірної команди Грузії статистично пере-важали своїх суперників за чотирма з шести показниками змагальної діяльності. Висновок. Аналіз показників змагальної діяльності у турнірі Rugby Europe Championship-2022 доводить, що регбісти збірної команди Грузії демонструють перевагу у більшості показниках змагальної діяльності у регбі-15, що приносить результат у вигляді першого місця у підсумковій таблиці чемпіонату.
ОСОБЛИВОСТІ ФОРМУВАННЯ АДАПТАЦІЙНИХ РЕАКЦІЙ ДО ФІЗИЧНОГО НАВАНТАЖЕННЯ В УЧНІВ МОЛОДШОГО ШКІЛЬНОГО ВІКУ
Authors: Товт Валерій , Хома Тетяна
Published: February 2024

Метою дослідження є вивчення особливостей формування адаптаційних реакцій до фізичного навантаження в учнів молодшого шкільного віку. Методи: аналіз та узагальнення спеціальної літе-ратури; опитування; педагогічне спостереження; інтерв’ювання; порівняльний експеримент; методи математичної статистики. Результати. Дозування фізичного навантаження та інтервалів відпочинку є важливими чинниками у формуванні адаптаційних реакцій учнів молодших класів. Під час виконання фізичних вправ в організмі запускаються механізми, в результаті яких посилюється сила м’язів, змінюється функція дихальної, серцево-судинної, нервової систем організму. Завдяки здатності організму до саморегуляції відбувається його адаптація до змін у фізичному навантаженні. Висновки. Тренування, в яких моторна щільність від заняття до заняття поступово збільшувалася, сприяли кращій адаптації учнів молодшого шкільного віку до фізичних навантажень.
ПОПУЛЯРИЗАЦІЯ ФІЗИЧНОЇ АКТИВНОСТІ МОЛОДІ В КИТАЇ
Authors: Фольварочний Ігор
Published: February 2024

Мета. Визначити напрями консолідації суспільства у пошуках шляхів популяризації й усвідом-лення важливості фізичної активності та її користі для здоров’я дітей і підлітків, створення законо-давчих передумов у КНР щодо усвідомлення на державному рівні консенсусу стосовно фізичної актив-ності молоді. Методи. Узагальнення даних науково-методичної літератури, інформаційних ресурсів мережі Інтернет та документальних джерел щодо історії розвитку фізичного виховання молоді в Китаї, ретроспективний і порівняльно-історичний методи. Результати. Враховуючи традиційні куль-турні цінності та очікування, пов’язані з академічними досягненнями в Китаї, існувала потреба роз-робити програми фізичної активності, які дозволять дітям перерозподіляти свій час, який вони прово-дять у сидячому положенні, витрачений на виконання домашнього завдання, на фізичні навантаження (від легкої до високої інтенсивності) у домашніх умовах. Cтратегічна мета Китаю полягає в тому, щоб 60% молоді досягли “відмінних” показників у фізичній формі до 2030 року. Висновок. Отже, реформування системи фізичного виховання на державному рівні в Китаю базується на активній просвітницькій роботі в сфері поширення здорового способу життя серед населення та залучення молоді до активних занять фізичною культурою і спортом.
DIMENSIONAL ANALYSIS MODEL FOR ANALYTICAL EVALUATION OF PROPULSION FORCE IN SPORTS ACTIVITIES
Authors: Iacob RM , Budescu E , Budescu E
Published: February 2024

Aim. The dimensional analysis model is used to analytically express a physical quantity dependent on a number of physical parameters observed experimentally. Thus, using the method of dimensional analysis products, in this paper, the expression of the propulsion force of the human body, in sports activities, was analytically determined. Methods. Analytical modeling using experimental observations. Results. The experi-mental observations, both by the authors and from the specialized literature, have identified as the main parameters that influence the propulsion force, the speed of movement, the distance over which the movement is made, the duration of time for the movement, the mass of the human subject and the age of the individual. The method involves the choice of independent or fundamental dimensions, with the help of which dimen-sionless proportions are formed, both for the propulsion force and for the other physical parameters whose dimensions depend on the fundamental dimensions. For the case analyzed in this paper, the fundamental quantities were the distance traveled, the time duration for the movement and the mass of the human subject. With the help of the product method, the analytical expression of the propulsion force was obtained as a product between the physical parameters whose dimensions are fundamental and a function defined with the help of the dependent physical parameters and some of the independent ones, a function that is determined experimentally. Based on the specialized literature, the dependence function of the dependent and independent physical parameters was determined, so that the numerical simulation is possible. Conclusion. Te product method presented in this paper can also be used in the field of sports, when a physical quantity dependent on a number of experimentally observed physical parameters is desired to be expressed in a calculation expression.