bluuebunny/crossref_metadata_2025 huggingface dataset:
An Information Education Management and Teaching Information
Management System Construction of Universities in Guangdong
Province
Authors: Wu Shiwen , Albina Erlito
Published: October 2023

Information education management is a complex and tedious work, especially with the continuous expansion of the scale
of colleges and universities, the number of students has risen sharply, the relevant student information has doubled and doubled, to bring
more pressure to the information management. The construction of information-based educational administration and teaching information
management system is an inevitable choice for the development of contemporary education, which drives the modernization of education
through informationization and realizes the leapfrog development of education.
Given department in colleges and universities set up more less tedious, management staff , all kinds of students to the current situation
of increasing year by year, the new system can design students throughout the school each department and each link of the students to
meet the needs of the school information management, information management of students, teachers and other information digitization,
automation, scientifi c management, to improve the teaching quality and management level, Promote the informatization reform of education.
Association Between Body Mass Index and Low Back Pain Among Students at the Faculty of Medicine, Pelita Harapan University
Authors: Thiono Jeskry , Suryadinata Neneng
Published: October 2023

Background: Low back pain (LBP) is the most common musculoskeletal complaint and the largest contributor to the burden of disability in the world. One of the risk factors for LBP is having a higher body mass index (BMI). Although the relationship between BMI and LBP in the age group susceptible to LBP has been widely studied, the relationship in the young adult age group is still under-researched. Meanwhile, several studies report that lifestyle changes that occur during the COVID-19 pandemic might lead to an increasing number of overweight obese sufferers, including in the young adult age group. Given the context, this research aims to determine the relationship between BMI and LBP in UPH Medical Faculty (FK UPH) students during the COVID-19 pandemic.

Method: A cross-sectional method of unpaired categorical comparative analytical study design was conducted with a population of 414 medical students. Data were collected by an online survey of BMI measurement and the Nordic Musculoskeletal Questionnaire. Statistical analysis was done using SPSS Statistics with Chi-squared or Fischer's exact method.

Result: The study involved a sample of 372 people with 188 people (50.5%) being LBP sufferers. Most of the sample belongs to the category of BMI < 23 kg/m2, which is 215 people (57.8%).

Conclusion: The result from this research concludes that there is no significant relationship between BMI and LBP in FK UPH students during the COVID-19 pandemic (P = 0.420); significant relationships were found between LBP with gender (P = <0.001) and smoking habit (P = 0.022).  
The Role of Classical Music Therapy on Dysmenorrhea Pain and Anxiety in Pelita Harapan University Medical Students
Authors: Godjali Handriani Almira , Haryanto Hori , Sungono Veli
Published: October 2023

Introduction: Dysmenorrhea is menstrual pain that often occurs in young women. The pain felt in every women can be different from one another. Anxiety experienced by each women can also worsen the menstrual pain. Efforts to treat dysmenorrhea can be in the form of non-pharmacological therapy, one of which is music therapy.

Aim: This study uses an experimental method with random allocation to divide 122 respondents who are medical students of Pelita Harapan University into a control group and an intervention group.

Methodology: The intervention group has been given anexperiment of random allocationin the form of classical music therapy for 20 minutes on the first day of the respondent getting menstruation. As for the control group given 40Hz sound for 20 minutes. The data analyzed using chi-square and wilcoxon test.

Results: The results of the study found that the average menstrual pain in the control group before the intervention was 6.11 and after the intervention was 6.07. Meanwhile, in the intervention group, the average menstrual pain before being given classical music therapy was 6.46 and after the intervention was 3.39.

Conclusion: So that classical music therapy is effective for reducing anxiety by 0.77 and the menstrual pain scale is 3.07 in the group given classical music therapy with P value <0.001.
WNT-Activated Medulloblastoma in A 6-Year-Old Boy
Authors: Prasetyo Patricia Diana , Wahjoepramono Eka Julianta
Published: October 2023

Background: Medulloblastoma is the most common malignant brain tumor of childhood. Prognosis is mostly favorable, but may be affected by histological and molecular subtypes. Long-term therapy-related morbidity also remains a significant concern.

Case Presentation: A 6-year-old boy with brainstem/midline cerebellum tumor. Histopathology found area of necrosis, sheets of malignant undifferentiated round cells with hyperchromatic nuclei and scanty cytoplasm, no nodule and no anaplasia. Immunohistochemistry found p53 wild-type staining pattern along with b-catenin diffuse cytoplasmic and focal nuclear staining. This indicated a diagnosis of WNT-activated medulloblastoma, World Health Organization (WHO) grade IV, with classic histological features.

Discussion: WNT-activated medulloblastomas with classic histological features and no anaplasia were reported to have the most favorable prognosis. The current patient showed negative staining for GFAP, Olig2, EMA, H3K27M, EZHIP, and LIN28A, with retained staining for INI1 and BRG1, thus excluding several differential diagnosis such as atypical teratoid/rhabdoid tumor, embryonal tumor with multilayered rosettes, small cell glioblastoma, Ewing sarcoma, high-grade neuroepithelial tumor with BCOR alteration or diffuse midline glioma. Histopathology in combination with immunohistochemical and molecular subtyping of medulloblastoma can help to refine diagnosis, exclude differential diagnosis, and improve counseling in regards to overall prognosis.
IMPACT OF COVID-19 ON PERFORMANCE OF APMCs IN MARATHWADA REGION
Authors: Phad Sanjay Phulchand
Published: October 2023

The effects of the COVID-19 pandemic can be seen in the agriculture sector in terms of supply chain disruptions and agricultural production. Although the lockdown guidelines exempt farm operations and supply chains, challenges arise of supplying agriculture products in appropriate markets and time. This paper attempts to analyse the impact of COVID-19 lockdown on performance of Agricultural Produce Market Committees (APMCs) in Marathwada region (Maharashtra, India) with special reference to price, arrival and turnover.  This study is based on the data collected from the offices of 10 APMCs i.e. Jalna, Aurangabad, Gangakhed, Paithan, Loha, Jalna (Flower), Parbhani, Aurangabad (Vegitable), Ahmedpur, and Latur of Marathwada region and Maharashtra State Agricultural Marketing Board, Pune (Office). The difference in product arrival, prices and turnover of APMCs of Marathwada region before and during COVID-19 were analysed. The analysis of the difference in the product arrival, prices and turnover across markets and crops has shown a mixed response. It has been observed that vegetables market and flowers market have faced a significant decline in product arrival, modal prices and turnover during the pandemic.
Nexus between Inflation and Economic Growth in Sub-Saharan Africa Countries.: An Empirical Study using VECM
Authors: Chindengwike James
Published: October 2023

Using time series data from 1970 to 2021, this study analyzed the relationship between inflation and economic growth in Sub-Saharan African countries. The Vector Error Correction Model (VECM) and Granger Causality techniques were used in the study, and the variable was the consumer price index. Inflation and economic growth are statistically significant and adversely connected in the long run but positively related in the short run, according to the research. Furthermore, the research causality test demonstrates a bidirectional link between economic growth and inflation, as well as a unidirectional relationship between economic growth and FDI. According to the report, Tanzanian policymakers adopt good monetary policies, tools, and institutions to ensure effective and controlled inflation by establishing a steady inflation goal while ignoring comprehensive fiscal measures. The study request urges the Tanzanian government to improve its priorities while strengthening policies such as cost cutting and budgetary consolidation. It also emphasizes that government spending should primarily include development projects that are launched and completed on time to avoid cost escalation.
SCHOOL SYSTEM IS RESPONSIBLE FOR LOW TEST SCORES IN INDIA
Authors: Mandal Avinandan Krishna , Sharma Ayushi
Published: October 2023

The system of education as a whole has remained mostly unchanged since our British masters left it to us. Our educational system just offers us with a regular knowledge bundle that does not contribute significantly to their comprehension and problem-solving abilities. The objective of the paper aims to search the reasons for low test scores in Indian education system. This study is descriptive in nature based basically on primary as well as on secondary sources of education. There are several causes investigated in the study. There is no educational planning in accordance with the country's political and economic framework. It's odd to notice that students in India prefer vacation days than school days. Besides so many problems, there are still many genius people in India who are making our nation to feel proud.
Understanding Venture Funding and investors sentiments and trends
Authors: Ankita Rode Ankita Rode
Published: October 2023

Once reserved to three major cities—Bengaluru, Mumbai, and Delhi/NCR—startup finance has now reached the Big 8 cities, which also include Hyderabad, Chennai, Pune, Jaipur, and Ahmedabad. Firstcry, Druva, Icertis, and Mindtickle are just a few of the unicorns that can be found in Pune. and. a Newly included Tier II cities offer enormous untapped potential for growth and opportunity (Your Story-2022). Investor sentiment reached a high during the epidemic year, particularly in the second half of the year. It is fascinating to see how pre-series A and series A funding might be attracted to growing towns. The ability of rising cities to attract interest for seed and pre-series A/Series A rounds is an intriguing topic for research. Understanding how Pune is developing as a startup location with persistent interest from investors both within and beyond the country is the main goal of this analysis. The study uses a qualitative research methodology, which includes interviews with important start-up ecosystem players, secondary data analysis, and a review of related literature. The study ends with suggestions on how to improve Pune's startup ecosystem for decision-makers, investors, and businesspeople. They include actions like expanding financial access, encouraging business and academic cooperation, and strengthening the city's infrastructure. Overall, this research sheds light on the role of the investor.Top of Form
A Secondary study of RBI Digital Currency – CBDC
Authors: SACHIN SAHU  , Prof. MATHEW THATTIL
Published: October 2023

The world has moved on to a digital platform for its daily needs and uses. We in India also took this step toward digitalization in a stronger and forceful way from 2014 onwards, through setting up of digital infrastructure. Various start-ups took the initiative to make India a digital player. Digital payment is one such initiative taken by India even though we had digital payment systems in place before 2014 (we already had apps like paytm and NPCI since 2008) but the development through focused approach started post 2014.

Digital payment means the transaction of money through electronic form from one account to another account through electronic mechanism. There is no requirement for physical cash or credit card or debit card or any cheque instruments or financial instruments.
The Impact of Microfinancing on the Growth of India's MSME Sector: An Exploratory Study
Authors: Aniket Aniket Nivas Bhosale
Published: October 2023

The Micro, Small, and Medium Enterprises (MSME) sector in India plays a crucial role in driving employment opportunities and economic growth. Although most MSMEs are unregistered, they contribute 45 per cent to industrial output and 40 per cent to overall exports. These enterprises have been instrumental in industrializing rural and backward areas, reducing regional imbalances, and promoting equitable distribution of national income and wealth. However, the MSME sector faces several challenges and requires support to capitalize on opportunities in the rapidly evolving global markets. Consultancy services can aid MSMEs in enhancing their competencies in areas such as marketing, finance, business development, operations, and technology. The success of MSMEs is pivotal to rural and regional development, making them a vital component of the economy.

A substantial number of Indian MSMEs rely on self-funding due to limited financing opportunities, especially for micro-enterprises, which comprise nearly 95% of all MSMEs. Late payments by larger enterprises often pose challenges for MSMEs in managing their receivables. The Factoring Regulation Act of 2011 presents a potential solution, expected to boost the factoring industry in India. Factoring services offer advantages such as open account facilities and increased credit limits as sales grow. To support MSMEs, financial institutions in India should be more proactive in providing finance against factored receivables.
Growth and Potential of Floriculture (Marigold) in Madhya Pradesh
Authors: Lokesh
Published: October 2023

This research focuses on investigating the Growth and potential of the Marigold Flower industry in the Betul district of Madhya Pradesh. The study aims to provide insights into the current status of floriculture; identify critical factors influencing its Growth; evaluate the output potential; see the challenges faced by the farmers in the floriculture business and propose strategies for floriculture growth in Madhya Pradesh. The results are based on Primary and Secondary Data that was collected through personal interviews and other authentic secondary sources. The Preliminary findings suggest a growing trend in the floriculture industry in Betul, with traditional practices prevailing. Challenges include limited awareness, market linkages, lack of export potential, access to credit, etc. Despite these challenges, marigold floriculture offers supplementary income and employment potential to the Betul district. The study recommends some interventions such as modern training, improved market connections, awareness campaigns to enhance floriculture growth, Government support, sustainability considerations, community involvement, and export promotion, etc are essential for maximizing the industry's potential. Collaboration among stakeholders can foster a robust floriculture sector, contributing to local economic development and environmental sustainability.
Analytical Study of Climate Change with respect to Energy and Sustainable Development Goals
Authors: Gupta Sumeet , Ashish Kumar  , Sujeetsingh Thakur
Published: October 2023

This research paper particularly talks about two factors, Environment and Sustainability which is a global centric concern. As, India has pledged to achieve Net Zero target emissions by 2070. To achieve such a humongous target, Government of India has introduced various sustainable steps such as launching of Global biofuel alliance that covers majorly renewable sources of energy and ethanol blending.
Estimation of total income with discounting for probabilistic models of population dynamics
Authors: Sengupta Richik
Published: October 2023

In this paper, we study real-valued functions defined on quasimetric spaces. A generalization of Ekeland’s variational principle and a similar statement from the article [S. Cobzas, “Completeness in quasi-metric spaces and Ekeland Variational Principle”, Topology and its Applications, vol. 158, no. 8, pp. 1073–1084, 2011] is obtained for them. The modification of the variational principle given here is applicable, in particular, to a wide class of functions unbounded from below. The result obtained is applied to the study the minima of functions defined on quasimetric spaces. A Caristi-type condition is formulated for conjugate-complete quasimetric spaces. It is shown that the proposed Caristi-type condition is a sufficient condition for the existence of a minimum for lower semicontinuous functions acting in conjugate-complete quasimetric spaces.
The coefficient problem for bounded functions and its applications
Authors: Stupin Denis L.
Published: October 2023

A review of the solution of the classical coefficient problem on the class "Ω" _0 of bounded in the unit disc functions ω with normalization ω(0)=0, going back to I. Schur, is given. Then the first six inequalities, describing respectively the first six coefficient bodies on the class "Ω" _0, are derived. Next, a method of obtaining similar inequalities for classes M_F of functions subordinated to the holomorphic function F, giving the solution of the coefficient problem for these classes, is given. Then the properties of the mentioned inequalities as well as the relations between them are analyzed. In addition, it is shown that only one n-th inequality is sufficient to describe the n-th body of coefficients on the class "Ω" _0, and hence on M_F.
The problems of estimating both the modulus of each initial Taylor coefficient individually and estimating modules of all Taylor coefficients at once are discussed.
The problem of obtaining the sharp estimates of the modulus of the Taylor coefficient with number n, i.e. the functional |〖{f}〗_n |, on the class M_F is at first reduced to the problem of estimating the functional over the class "Ω" _0, which in turn is reduced to the problem of finding the maximal modulo of conditional extremum of a real-valued function of 2(n-1) real arguments with constraints of inequality type 0≤x_k≤1, 0≤φ_k <2π, which allows us to apply standard methods of differential calculus to study for extrema, since the target function is infinitely smooth in all of its arguments. For this purpose, the results of the solution of the classical coefficient problem on the class "Ω" _0 are used.
Formación de profesores universitarios
Authors: Sánchez Amaya Tomás
Published: October 2023

Este artículo emerge de una investigación realizada en la Universidad Distrital Francisco José de Caldas (Bogotá, Colombia), sobre los discursos y las prácticas de formación docente, en perspectiva de resignificarlos, dotarles de sentido y ponerlos en el debate académico institucional, de manera que se pudieran implementar estrategias y acciones para satisfacer los intereses y las necesidades (institucionales e individuales) de formación. La indagación contó con la participación de la Universidad del Tolima (Colombia) y la Universidad Nacional de San Luis (Argentina). La pesquisa, de corte cualitativo, analítico y descriptivo, se realizó sobre el estudio de una masa documental constituida por fuentes teóricas, metateóricas, normativas (de orden internacional, nacional e institucional), cuyos fundamentos metodológicos lo constituyó la caja de herramientas foucaultiana, principalmente la perspectiva arqueológica. Los hallazgos ratifican la relevancia de la formación docente evidenciada en la medida en que la calidad de la oferta educativa de las instituciones se corresponde (o debería corresponderse), con los niveles y procesos de formación del personal académico, toda vez que en la cultura de la evaluación instalada —y más, de cara a los procesos institucionalizados de autoevaluación y de autorregulación con fines de la obtención de registros calificados por parte de los programas académicos, y de la acreditación (tanto de los programas como de las instituciones)—, el factor docente es actor fundamental, en la perspectiva de optimizar y mejorar la oferta de los servicios que las universidades prestan a la sociedad, pues, en tales servicios, el cuerpo docente juega un papel fundamental.
Resposta do Sr. Hooker à súplica do Sr. Travers feita para o Conselho
Authors: Marques Victor Hugo , Silva Thiago Müller da
Published: October 2023

O texto em questão: Mr. Hooker’s Answer to the Supplication That Mr. Travers Made to the Council faz parte de uma série de textos conhecidos como ‘a disputa do Templo’. Ela não é uma Opus Magnum, nem possui o desenvolvimento significativo ou maduro do pensamento de Richard Hooker.
A influência da fisioterapia em pacientes pós-covid-19: análise das condutas e evolução cardiorrespiratória
Authors: Loesia Isabela , Muller Karla de Toledo C. , Miranda Aldo Silva de
Published: October 2023

Grande parte das pessoas que tiveram covid-19 apresentaram necessidade de reabilitação após a doença. O objetivo do estudo foi especificar quais condutas fisioterapêuticas foram utilizadas e comparar a evolução dos pacientes com o TC6. A pesquisa é descritiva e retrospectiva. Foram analisados 115 prontuários. Destacou-se o sexo masculino (61,8%). A faixa etária predominante foi de 20 a 59 anos. Estavam com sobrepeso, 70,6%. Foram internados, 52,9%. Apresentaram dispneia, 67,6%. Destacou-se a hipertensão (57,8%). As condutas fisioterapêuticas em evidência foram exercícios aeróbicos e de fortalecimento. Ao final, 97,0% dos pacientes aumentaram a distância percorrida comparada com a inicial (p<0,001). O condicionamento físico ficou semelhante ao previsto (p>0,05). Os pacientes apresentaram melhora na escala de Borg inicial 82,3% (4,88±1,79) significativamente maior que as atribuídas após o TC6 final (3,88±1,54) (p=0,0008). Concluiu-se que os pacientes apresentaram aumento da distância percorrida no TC6 e melhora no grau de esforço, o que amplia a importância da atuação fisioterapêutica na reabilitação cardiopulmonar em pacientes pós-covid-19.
Saúde e segurança ocupacionais em mulheres trabalhadoras e gênero
Authors: Santos Maria Inez
Published: October 2023

Este estudo objetiva demonstrar fatores que podem estar associados à saúde e à segurança ocupacionais de mulheres trabalhadoras com a questão de gênero. A busca dos estudos envolveu quatro bases de dados eletrônicas: Science Direct, Scopus, PubMed e Web of Science. Descritores: diseases; gender; safety; health; work. Critérios de inclusão: estudos publicados no período de 2016 a 2020, sem distinção de línguas e que tratassem da temática. Exclusão: revisões sistemáticas. Foram encontrados 2.855 estudos. Após a aplicação dos critérios de inclusão e exclusão, foram lidos 83 artigos, e oito foram incluídos na revisão sistemática. Concluiu-se que associar saúde ocupacional e questão gênero sugere influência na incidência de doenças ocupacionais. Sugere-se, no fim, o aprofundamento dessas questões.
Um estudo econométrico e de Machine Learning sobre indivíduos que se tornaram pobres na pandemia a partir da PNAD-Contínua
Authors: Santolin Roberto , Oliveira Patrick Gomes de
Published: October 2023

Este trabalho visa investigar a relação entre pobreza e a pandemia da covid-19, a partir de microdados da PNAD-Contínua. Para obter diferentes abordagens sobre o tema, foram utilizadas duas metodologias: 1) Econometria e 2) Aprendizado de Máquina (Machine Learning). O estudo tem como foco entender os principais determinantes da pobreza no período da pandemia, bem como prever a vulnerabilidade de indivíduos à pobreza utilizando Machine Learning. Os resultados obtidos apontam para uma maior chance de passagem para a pobreza em indivíduos não brancos, mulheres, moradores da região metropolitana, indivíduos em famílias maiores e com menor grau de instrução. Além disso, o algoritmo XGBoost obteve o melhor desempenho na previsão da pobreza após o balanceamento dos dados. Estes resultados podem ser utilizados para auxiliar na tomada de decisões no combate à pobreza no Brasil.
Analysis of the Supply Chain of Mineral Commodities in the United States
Authors: Sridhar Eshwara Prasad , Bhosale Saloni Sachin , Jones Jr. Erick
Published: October 2023

Mineral commodities are pivotal in the global economy and their supply chain dynamics are intricate and continually changing. In recent years, specific minerals have been identified as critical due to their significance in various end-use industries and their contribution to national security. As such, understanding the global mineral market and potential supply chain disruptions has become a critical task for businesses, policymakers, and investors.
Design of a Circularly Polarized Broadband Slot Antenna for Base Station Applications
Authors: Martey Awah Daniel , Sarkodie O. Kwakye, Ph.D. Kingsford , Evame Parku Eliezer , Dziedzorm Dzikunu Godwin
Published: October 2023

In this paper, a circularly polarized broadband slot antenna is designed for base station applications. The antenna is built on a square-shaped FR4 Epoxy substrate that measures 60mm in length and 1mm in height with a relative permittivity of 4.4. The ground plane has a recessed slot, and the feeding mechanism employs an offset microstrip line. The slot enables circular polarization and optimal impedance matching, which are enhanced further by offset feeding and the addition of stubs to create a composite-shaped patch. With an impedance bandwidth of 106% (1.28 GHz-4.16 GHz) and an axial ratio bandwidth of 69% (1.71 GHz-3.51 GHz), the CP broadband slot antenna effectively covers popular mobile communication bands such as GSM 1800, GSM 1900, 3G/LTE 2100, 3G/LTE 2300, 4G/LTE 2500, and 2.4 GHz Wi-Fi bands. The maximum gain is simulated to be 3.5 dB.
Long Lived Quasinormal Modes and Telling Oscillatory Tails of the Bardeen Spacetime
Authors: Bolokhov Sergey
Published: October 2023

The Bardeen black hole stands as the first model of a regular black hole. Driven by the interpretations of Bardeen spacetime as a quantum-corrected Schwarzschild-like solution, we study quasinormal modes of a massive scalar field within this context. We have found that the damping rate of the massive scalar field decreases as the mass grows, leading to appearance of the arbitrarily long lived modes. or quasiresonances. The massive term in the Bardeen case is distinctive also in two other respects. First, the overtones deviate from their massless limit at a much smaller rate than the fundamental mode, when the mass is turned on. This behavior overlaps with the outburst of overtones due to the quantum deformation near the event horizon. Finally, integration in the time-domain shows that the oscillatory tails decay as $\sim t^{-(\frac{8}{6}+\ell)}$ at intermediate times and as $\sim t^{-1}$ at asymptotically late times, which is different from the Reissner-Nordstr\"om and Schwarzschild limits.
A GPU Accelerated Method for 3-D Nonlinear Kelvin Ship Wave Patterns Simulation
Authors: Sun Xiaofeng , Cai Miaoyu , Ding Junchen
Published: October 2023

Ship wave is of great interest for wave drag, coastal erosion and ship detection. In this paper, a highly-paralleled numerical scheme is proposed for simulating three-dimensional (3-D) nonlinear Kelvin ship waves effectively. First, a numerical model for nonlinear ship waves is established based on potential flow theory, boundary integral method and Jacobian-free Newton-Krylov (JFNK) method. In order to improve computational efficiency and reduce data storage of JFNK method, a banded preconditioner method is then developed by formulating the optimal bandwidth selection rule. After that, a Graphics Process Unit (GPU) based parallel computing framework is designed, and a GPU solver is developed by using Compute Unified Device Architecture (CUDA) language. Finally, numerical simulations of 3-D nonlinear ship waves under multiple scales are performed by using the GPU and CPU solvers. Simulation results show that the proposed GPU solver is more efficient than the CPU solver with the same accuracy. More than 66% GPU memory can be saved and the computational speed can be accelerated up to 20 times. Hence, the computation time for Kelvin ship waves simulation can be significantly reduced by applying the GPU parallel numerical scheme, which lays a solid foundation for practical ocean engineering.
Experimental Study on Heat and Mass Transfer Characteristics of an Evaporative Cooler for Supercritical CO2 Cooling
Authors: Zhang Peikun , Guo Bingfa , Wang Li
Published: October 2023

To study the heat and mass transfer characteristics of an evaporative cooler for cooling high-temperature working fluids such as supercritical carbon dioxide, an experimental device of the evaporative cooler was built, and a corresponding test system was constructed. Then, the experimental study was carried out based on the orthogonal test method, and the law and extent of the influence of water flow in the tube, spray water flow rate, inlet water temperature in the tube, and air flow rate on heat dissipation, cooling efficiency, and heat and mass transfer coefficients have been obtained. The correlation equations of the heat and mass transfer coefficients were obtained by fitting the orthogonal experimental data, and the validity of the correlation equations was confirmed by the verification experiment.
An Integrated Photoelasticity Based Approach for Reconstruction of Stress Profiles and Optical Anisotropy of GRIN Lenses
Authors: Lipovskii Andrey A. , Dolzhenko Dmitry I. , Kapralova Viktoria M. , Karov Dmitry D. , Korotkov Alexander S. , Loboda Vera V. , Nikitina Elizaveta A. , Sudar Nicolay T. , Zhurikhina Valentina V.
Published: October 2023

The paper shows that it is possible to obtain reliable information on the dependence of radial distribution of longitudinal birefringence in glass cylindrical elements with radial distribution of refractive index (GRIN lenses) on the basis of transverse polarization tomography data of residual stresses. This does not require complicated procedures of sample preparation, as is necessary in the case of longitudinal translucency measurements. The approach developed was verified in the experiments with a set of different GRIN lenses formed with ion exchange technique, and the closeness of the data obtained from transversal and conventional longitudinal transmission measurements was demonstrated.
ModernChallenges and Issues in School Environment. Internet Addiction, Adolescent Developmental Sexuality, and School Bullying
Authors: Leontopoulos Stefanos , Skenderidis Prodromos , Liapopoulos Vaios
Published: October 2023

In Greece, as in most European countries, the heterogeneity of students leads to conflicts resulting in a general inability of the educational process to function. This review study is focused on modern issues affecting youth and school education procedures such as internet addiction, student behaviour expressed as bullying, and adolescent sexuality development. All sides agree that the most essential purposes of education are to emphasize the cultivation of interpersonal relationships, the development of sociability, and self-esteem, and the prevention. Teachers wanting to respond to the spirit of the times to rationalize the pedagogical process introduced the pedagogical contract as a school practice as a valuable tool in taking control of the class and gaining students' attendance. The teacher's positive attitude will create added value to their knowledge and experiences while helping them to integrate into society.
Construction of an Ecological Security Pattern Based on Ecological Sensitivity and MSPA–MCR Model: A Case Study with the Urban Central District of Harbin
Authors: Liu Yulin , Lu Yi , Zhou Herui , Zhang Shengnan , Yu Xiaobo
Published: October 2023

Rapid urbanization has led to many ecological problems such as landscape fragmentation, decreased landscape connectivity, and decreased biodiversity. Building an ecological security pattern is an important way to ensure ecological security and maintain sustainable urban development. Harbin is an important large-scale city in northeastern China, and the urban central district of Harbin is used as the study area. Ecological sensitivity assessment, MSPA, gravity model, landscape connectivity assessment and MCR model were used to extract ecological source areas, ecological corridors and ecological nodes in the study area to construct and optimize the ecological security pattern. Research shows that: A total of 23 ecological source areas were identified, mainly located along the Songhua River in the central part of the study area and in the mountain forest areas within the A-cheng District in the southeastern part of the study area. 48 ecological corridors were extracted, mainly in Daowai District, A-cheng District and the eastern part of Xiangfang District. There are 8 important ecological corridors and 10 important connecting corridors. 61 ecological nodes of the first level and 65 ecological nodes of the second level were extracted. High, higher, medium, lower and low security areas were classified based on the minimum cumulative resistance surface, with the highest proportion of high ecological security areas accounting for 45.75% of the study area. 65 ecological breakpoints were extracted and restoration measures were proposed. Finally, The structure of the ecological security pattern optimization of "two axes, two belts and four areas" is proposed, and corresponding ecological management measures are put forward. The experimental system of this study can provide new ideas for the construction of ecological security patterns in other regions and provide scientific support for the ecological sustainable development of similar urban areas.
Synthesis of Solar-Sensitive ZnO Photocatalysts Using Microwave Plasma for Effective Degradation of Phenols and Antibiotics
Authors: Muslimov Arsen , Antipov Sergey , Gadzhiev Makhach , Ulyankina Anna , Kanevsky Vladimir
Published: October 2023

The presented work studies the processes of synthesis of nitrogen-containing structures of ZnO using atmospheric pressure microwave nitrogen plasma and investigates their photocatalytic activity in the processes of degradation of 2,4-dinitrophenol and the antibiotic ciprofloxacin when irradiated with sunlight. The work proposes an effective method for formation of photosensitive ZnO powders. Due to the features of plasma treatment in the open atmosphere of zinc metal microparticles, ZnO structures are formed with sizes from hundreds of nanometers to several micrometers with various micromorphologies. High photoactivity was demonstrated (rate constants 0.036 min-1 and 0.051 min-1) of synthesized ZnO structures during photo-degradation of 2,4-dinitrophenol and ciprofloxacin, respectively, when exposed to solar radiation. Photo-active structures of ZnO synthesized using microwave nitrogen plasma can find application in processes of mineralization of toxic organic compounds.
Extrusion-Based Additive Manufacturing Driven Design and Testing of the Snapping Interlocking Metasurface Mechanism ShroomLock
Authors: Gloyer Philip , Schek Lucca Nikita , Flöttmann Hans Lennart , Wüst Paul , Völlmecke Christina
Published: October 2023

This study presents the manufacturing process driven development of an interlocking metasurface mechanism (ILM) for Fused Filament Fabrication (FFF) with a focus on open-source accessibility. The presented ILM is designed to enable strong contact between to planar surfaces. The mechanism consists of spring elements and locking pins which snap together when forced into contact. The mechanism is designed to optimize mechanical properties, functionality and printability with common FFF printers. The mechanisms is printed from thermoplastic polyurethane (TPU) filament which was selected for its flexibility, crucial for spring element performance and tolerances of the fabrication method. To characterize the designed mechanism a tensile test is carried out to assess the holding force of the ILM. The force-displacement profiles are analyzed and categorized into distinct phases, highlighting the interplay between spring deformation, sliding, and disengagement. The results show variations in holding forces attributed to geometric and material-related factors. The testing results are compared and discussed to a numerical simulation carried out with a frictionless approach with a nonlinear Neo–Hookean material law. The study underscores the importance of meticulous parameter control in 3D printing for consistent and reliable performance of interlocking metasurface mechanisms. The investigation leads to a scalable model of a ILM element pair with a distinct three-phase snapping characteristics ensuring reliable holding capabilities.
Calculation of Transmission Line Worker Electric Field Induced Current using Fourier Enhanced Charge Simulation
Authors: Leman Jon , Olsen Robert G , Renew David
Published: October 2023

Exposure to quasi-electrostatic field induced currents is a hazard of live-line transmission work. These steady-state induced currents are typically less than 1 mA, and their sensory effects range from imperceptible to painful depending on the person and conditions such as contact area and duration. Permanent injury from these currents is unlikely but they can distract workers, increasing the risk of injury from falls or other dangers. Identifying contact current severity and training workers can help reduce risk of accidents. Measuring induced currents along a climbing route is time consuming and simulation is challenging because of geometric complexity of the worker, transmission structure, conductor bundles, and electric fields in the climbing space. This research explores calculation of worker contact current using a recently developed adaptation of the charge simulation method. The method uses Fourier principles to improve computational efficiency when explicitly modeling all bundle subconductors. The research also examines reasonable simplifications for modeling lattice structures and human geometry. Calculated results compare well to measured currents for a worker climbing a 400 kV lattice structure. This indicates the method is a practical option for calculating the severity of steady-state contact currents. A simple calculation is suggested for estimating these currents.
On the Definition, Assessment and Enhancement of Circular Economy across Various Industrial Sectors: A Literature Review
Authors: Vogiantzi Christina , Tserpes Konstantinos
Published: October 2023

Circular economy has recently emerged as a key strategy for promoting sustainability and reducing waste in various industrial sectors. This paper provides an overview of circularity in aerospace, wind energy, transportation, automotive and sports goods using data and information from the literature and the EC funded project "RECREATE". The survey reviews the different definitions, assessment methods and metrics used to explore and evaluate circularity, including assessment frameworks such as Life Cycle Assessment (LCA) and assessment indicators. Furthermore, explores the challenges, possibilities and the available tools for enhancing circularity, such as digital tools. The survey highlights the importance of a holistic and systemic technique to circularity, concerning all stakeholders along the value chain. Overall, this study aims to contribute to a better understanding of circular economy and provides insights for future research.
Probabilistic Assessment of Safety Performance of UHPC Composite Pile of Bridges Foundation Using Symmetrical FEM Reliability Method
Authors: Duan Maojun , Dong Fenghui
Published: October 2023

In this paper, aiming at the safety evaluation of ultimate bearing safety capacity of ultra-high-performance-concrete (UHPC) composite pile bridge foundation, the symmetrical reliability method with forward and inverse analysis considering the randomness of parameters is proposed to evaluate the safety performance of composite pile foundation. The proposed method, consid-ering the randomness of parameters, was used to calculate the safety factor of ultimate bearing capacity of composite pile foundation to meet the prescribed target reliability requirements. An example was used to verify the correctness of the proposed method. The proposed method was applied to an actual engineering example and the sensitivity of the parameters were analyzed, the calculation results show that: ignoring the randomness of the parameters will overestimate the safety of the composite pile foundation; the target reliability index has a great influence on the safety of composite pile foundation; the influence of statistical parameters of random variables on the safety of UHPC composite pile foundation cannot be neglected; the initial iteration value of the safety factor has no effect on the final calculation result. The proposed method has high ac-curacy and applicability, and provides an effective way for the safety factor estimation of ultimate carrying capacity of UHPC composite pile foundation.
Federated Distillation Methodology for Label-based Group Structures
Authors: Yang Geon Hee , Tae Hyunchul
Published: October 2023

In federated learning (FL), clients train models locally without sharing raw data, ensuring data privacy. In particular, federated distillation transfers knowledge to clients regardless of the model architecture. However, when groups of clients with different data distributions exist, sharing the same knowledge among all clients becomes impractical. To address this issue, this paper presents an approach that clusters clients based on the output of a client model trained using their own data. The clients are clustered based on the predictions of their models for each label on a public dataset. Prior knowledge of the number of groups is not required. Evaluations on the MNIST dataset showed that our method accurately identified these group structures and improved accuracy by 15–75% compared with traditional federated distillation algorithms when distinct group structures were present. Additionally, we observed significant performance improvements in smaller client groups, bringing us closer to fair FL.
The Electron-Phonon Interaction at Vicinal Metal Surfaces Measured with Helium-Atom Scattering
Authors: Benedek Giorgio , Miret-Artés Salvador , Manson Joseph R. , Toennies Jan Peter
Published: October 2023

It has been recently demonstrated that inelastic helium-atom scattering from conducting surfaces can provide a direct measurement of the surface electron-phonon coupling constant (mass-enhancement factor ) via the temperature- or the incident-energy-dependence of the Debye-Waller exponent. The analysis of previous published as well as unpublished helium atom scattering diffraction data from the vicinal surfaces of copper (Cu(11),  = 3,5,7) and aluminium (Al(221) and Al(332)) permits to extract  for this class of surfaces, suggesting an enhancement with respect to the corresponding data for the low-index surfaces (111) and (001) above a possible roughening transition temperature. The specific role of steps as compared to that of terraces is briefly discussed.
Techno-Economic Analysis of Cement Decarbonization Techniques: Oxygen Enrichment vs. Hydrogen Fuel
Authors: Domingues Bruno , Santos Diogo M.F. , Mateus Margarida , Cecílio Duarte
Published: October 2023

The Paris Agreement aims to limit global warming, and one of the most pollutant sectors is heavy industry, where cement production is a significant contributor. This work briefly explores some alternatives: recycling, reducing clinker content, waste heat recovery, and carbon capture, discussing their advantages and drawbacks. Then, it examines the economic viability and benefits of increasing oxygen concentration in the primary burning air from 21% to 27%, which could improve clinker production by 7%, and the production of hydrogen through PEM electrolysis to make up 5% of the fuel thermal fraction, both on a cement plant producing 3000 tons of clinker per day. It is concluded that oxygen enrichment can provide substantial fuel savings for a relatively low cost despite a possible significant increase in NOx emissions. By opposition, hydrogen production at this scale does not appear economically viable.
The Agricultural Application of Full Polar and Quantification S-band SAR Subsystem of Chinese High-Resolution Aerial Remote Sensing System
Authors: Liu Yabo , Wang Luhao , Zhu Shuang , Zhou Xiaojie , Liu Jia
Published: October 2023

Based on the high-precision quantitative measurement ability, the S-band subsystem of China's high- resolution aviation system carried out the agricultural application test for the first time in Jilin elm, China. The experiment is mainly carried out in combination with vegetation growth, soil moisture content inversion, wheat straw returning and ground feature classification. Through the design of quantitative measurement scheme, the results of different straw coverage and observation at different times are compared, which shows the prospect of S-band full polarization synthetic aperture radar system in the field of agricultural application.
For the anniversary of Sergey S.Yakushin
Authors: Pereverzeva K. G.
Published: October 2023

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Improvement of the system of training of technical specialists in a higher education institution
Authors: Lebedev Anatoliy
Published: October 2023

A comparison of the main forms of education in higher education institutions of Ukraine was made; the proposed structure of the electronic textbook, which is used in interactive and distance online learning; substantiated concept of dual form of education and given examples of its implementation. A well-founded system of monitoring the process of training specialists in a higher education institution.

Nowadays, it is possible to distinguish five main forms of education: passive, active, and interactive models, as well as distance online learning and a dual form of education. To date, passive, active and interactive learning models have been well developed in terms of methodology. Distance online learning has positively proven itself to ensure the safety of students and teachers during a pandemic and martial law. In Ukraine, the project of the Ministry of Education and Science of Ukraine to introduce a dual form of education in twenty-seven institutions of higher education is currently being implemented. The basic principles of the dual form of education are: increasing the volume of training, which is carried out directly at the workplace; participation of employers' employees in the development and coordination of the educational program of higher education institutions; training on the basis of relevant contracts between the higher education institution, the employer and the student. The practical orientation of dual training plays a special role in the formation of the research competence of the applicant and the training of junior specialists of the specialist qualification (working profession).
Increasing the anti-friction properties of the surfaces of machine parts through plasma spraying of powder coating PG-19M-01 instead of cast bronze bushing
Authors: Luzan Sergii , Bantkovskiy Vyacheslav
Published: October 2023

The anti-friction properties of the plasma-sprayed powder coating based on copper PG-19M-01, proposed instead of the cast bronze sleeve made of 05Ts5S5 bronze, used in the coupling of the drive shaft and gear of the T-155 transfer case pumps, were proposed and investigated in the paper. X-ray phase analysis of plasma coatings from PG-19M-01 powder showed that the main phase in the coatings is a solid solution of aluminum in copper. X-ray microspectral analysis established that the composition of the coating is heterogeneous in thickness. The results of the conducted research and field tests showed that plasma coating with copper-based powder PG-19M-01 has higher tribotechnical characteristics compared to cast bronze 05Ts5S5.