bluuebunny/crossref_metadata_2025 huggingface dataset:
PUBLIC ADMINISTRATION SYSTEM OF SOCIAL SECURITY TRANSFORMATION IN UKRAINE WITHIN THE WAR: HOUSING, FOOD, AND MEDICAL CARE ASPECTS
Authors: Merisalu Eda , Demikhov Oleksii , Letunovska Nataliia , Taraniuk Leonid
Published: December 2024

The study is relevant due to the growing problem of the increase in the number of internally displaced persons (IDPs) in Ukraine under the conditions of Russian aggression in 2022-2024, who remain in fact without a permanent residence, a place of work and have difficulties in ensuring the normal life of their families in the new circumstances. The purpose of the study is to clarify the list of levers in the system of public management of social protection of IDPs that are capable of increasing the effectiveness of the mechanism of providing this category of population with sufficient support in matters of housing options, employment, health care services, etc. The article examines the peculiarities of public administration in the system of ensuring social protection of people classified as IDPs under the conditions of martial law in Ukraine. The management tools used at the local level to support IDPs were comprehensively analyzed, with the development of recommendations for improving the social security system in terms of housing conditions, food, medical care, and employment of such persons at the regional level. The article defines the peculiarities of the category of internally displaced persons, analyzes international standards and national legislation on the social protection of internally displaced persons, and identifies key trends and directions of its development. The foreign experience of public administration in the social protection of IDPs is summarized with an analysis of the national features of support for this category of population inherent in different countries. Recommendations for improving the public management system in the social protection of IDPs have been developed for the Sumy territorial community. The practical significance of the research is determined by the possibility of their use by local executive authorities and local self-government bodies in the development and implementation of support programs for internally displaced persons. The proposed recommendations can be applied in the activities of structural subdivisions for the social protection of the population, and public organizations that support IDPs.
Innovative management strategies of higher education institutions in the conditions of digital transformation
Authors: Matvieieva Yuliia , Rybalchenko Svitlana , Bohdan Eduard , Peresadko Ihor
Published: December 2024

Recent years have brought significant changes to the educational sector, which are a reaction to rapid changes in the external environment of educational institutions. These changes are associated with the constant active development of technologies and approaches to the system and forms of education. Research in this field contributes to the understanding and development of strategies that help higher education institutions to effectively adapt to modern educational challenges and maintain a high level of competitiveness.
The purpose of this work is an in-depth analysis and research of scientific works devoted to the formation and implementation of strategies for the development of higher education institutions. Particular attention is paid to the identification of key elements of strategic management, which ensure the introduction of the best global practices into the national education management system. The goal includes the study of adaptation mechanisms that allow higher education institutions to effectively respond to global changes and maintain competitiveness in the context of rapid digitalization and internationalization of the educational process. Also, an important aspect is the study of how the integration of international educational practices contributes to the improvement of the quality of educational services and management decisions at the level of Ukrainian universities.
In accordance with the set goal, the following main tasks were solved: the structural and logical essence of the concept of "strategic management of educational activity" was investigated; an analysis of scientific publications on a specific topic was carried out; the current state of the educational services market was analyzed; prioritized areas of development and improvement of approaches to the development and implementation of innovative strategies in the educational sphere have been established; the experience of using technological innovations in the context of strategic management of educational activities is investigated.
Methods and tools were used during the research: abstract-logical and systemic-structural analysis - when determining the essence of the concept of "strategic management of educational activity"; Scopus® database tools - when researching the relevance of the chosen topic and identifying interested countries and scientists in the topic being studied; VOSviewer software (version 1.6.16) - in data clustering, which helps to identify the most relevant keywords and filter out less priority ones; Google trends analysis - when determining the most popular level of educational space among the public.
The role of machine learning and artificial intelligence in optimizing costs and increasing revenues of technological companies
Authors: Khalimonchuk Ivan , Pozovna Iryna
Published: December 2024

The following article delves into the profound impact of Artificial Intelligence (AI) and Machine Learning (ML) on enhancing business efficiencies and streamlining processes. With technological advancements continuing to accelerate, this subject has gained increasing significance. In an era where economies heavily rely on data, it has become imperative for companies to integrate AI and ML models into their business operations to maintain competitiveness, reduce expenses, and boost revenues. The research focuses on implementing various AI paradigms, including Natural Language Processing (NLP) and chatbots, across enterprises of diverse scales. It specifically explores their influence on enhancing sales, marketing, and customer service. These AI tools signify businesses' evolving strategies to navigate intricate markets. This research uses a quantitative analytical approach to evaluate the financial implications of integrating artificial intelligence (AI) within companies. To achieve this, we are utilizing both linear regression and random forest models for our analysis. This methodology enables a comprehensive analysis of the correlation between adopting advanced AI technologies and subsequent financial performance. The substantial body of research on AI and ML technologies underscores their escalating significance and the imperative for businesses to adapt to these changes. This study contributes to this extensive knowledge by furnishing empirical evidence of AI's impact on augmenting financial outcomes. The findings affirm that AI's strategic development and integration are crucial for enhancing company revenues and overall economic well-being. For this research, we selected the global Amazon investment report and the global AI/ML development growth from 2011 to 2023. This article underscores the practical implications and substantial benefits of leveraging AI and ML in real-world business scenarios. The conclusions suggest that businesses continuously refine and incorporate AI technologies into their models to achieve optimal operational efficiency. By outlines the advantages of specific AI models and provides a framework for companies aiming to utilize technology to gain a competitive edge in the market. Consequently, the practical significance of this research lies in its capacity to inform and enhance business strategies through the effective implementation of AI and ML.
Maszkon innen és a maszkon túl : a COVID utáni mindennapok megélése a szülőkön át a szakemberek szemüvegén keresztül
Authors: Herczeg Viktória , Jalekné Dr. Rózsavölgyi Katalin , Tömő Zsolt , Beke Szilvia
Published: December 2024

A COVID a segítő szakmákat is egy új, ismeretlen területre kényszerítette, ahol eddig nem tapasztalt problémák és azok megoldása várt a szakemberekre. Leginkább a családokat érintette, annak minden tagját, beleértve a mindennapok gördülékenységéért küzdő szülőket. A szocializációs színterek eltűnése, összemosódása, átalakulása a gyermekek/fiatalok mindennapjait megnehezítve, ólomsúlyként nehezedett rájuk mind fizikailag, mind pszichésen, mentálisan. Feltárásunk fókuszában a gyermekeiket nevelő szülők, az általuk (szociális munkásként dolgozó kollégáknak) elmondott változások állnak, melyek az otthoni mindennapokat, életminőséget, életmódot, szabadidős tevékenységet befolyásolták. A kvalitatív módszertanon alapuló kutatás adatgyűjtése félig strukturált interjúk keretén belül valósult meg. Az elemzéshez Anselm Strauss és Juliet Corbin-féle Grounded Theory (GT)-hoz köthető, háromlépcsős kódolási technikát hívtuk segítségül. Az eredmények alapján megállapítható, hogy a COVID a legtöbb család életének több szegmensében hozott változást melyek a felmerülő problémák mennyiségét és mélységét tekintve erős lenyomatot hagytak a családok, azon belül is a szülők mentális és fizikai egészségén.  A gyermekek/fiatalok tekintetében a szocializációs folyamatok, a rémhírek és az izoláltság okozta a legnagyobb problémát. Az eredmények feldolgozása során jól látható volt, hogy a COVID és az az utáni élet a kapcsolatokról, mentális és fizikai egészségről, anyagi biztonságról alkotott képet jelentős mértékben megváltoztatta. A szülőknek a mindennapi életük újratervezésén túl, a gyermekeikkel kapcsolatos problémákkal is szembesülniük kellett.
“GÖLÜMÜZ VAR AMA SUYUMUZ YOK”: SUĞLA GÖLÜ’NÜN (KONYA) KÜLTÜREL EKOLOJİSİ
Authors: Hasbek Mustafa , Yiğit Ali
Published: December 2024

Çalışmada Suğla Gölü kültürel ekoloji perspektifiyle incelenmiştir. Göl ulusal önemde sulak alan olmasına rağmen insan-çevre ilişkisi kapsamında, bütüncül olarak incelenmemiştir. Bu boşluğu doldurma adına alanın kültürel ekolojisi saha araştırmalarıyla incelenmiştir. Çalışmada şu sorulara cevap aranmıştır: “Suğla Gölü’nün ekolojisine etki eden insan müdahaleleri nelerdir?”, “Gölün yörede yaşayan insanlar için anlamı ve değeri nedir, zamanla nasıl değişmiştir?”, “Kültürel perspektifle bakıldığında alandaki yerel yaşam biçimleri nasıl şekillenmiştir?”, “Yerel yaşam biçimleri ve kültür, sulak alanın dönüşümünden nasıl etkilenmiştir?” Sayısal veriler, saha çalışmalarında uygulanan etnografya yöntemiyle elde edilen birincil verilerle sentezlenmiş, betimsel analiz yöntemi ile değerlendirilmiştir. Sonuçlar, göl kaynaklarının yüzyıllardır yöre halkı tarafından yoğun olarak kullanıldığını, gölün bir takım karar ve müdahalelerle değişime uğradığı ve bazı fonksiyonlarını yitirdiğini göstermektedir. Alana yönelik kararların katılımsız alındığı, alanla ilişkisi yöre halkından az olan karar vericiler ve kullanıcıların göl çevresindeki insan-çevre etkileşimini şekillendirdiği görülmüştür. Alanın sürdürülebilirliği için Ramsar Sözleşmesi’nde belirtilen sulak alanların akıllı kullanım ilkelerine bağlı yönetim planları oluşturulmalıdır.
Role of Femvertising in Enhancing Women’s Empowerment in FMCG Brand Campaigns
Authors: Rose Martin Preethy , Shanthi R.
Published: December 2024

Advertisements that endorse and empower women and girls are referred to as “Femvertising”. These advertisements frequently defy stereotypes and portray women in powerful and competent roles. The study explored the contribution of Femvertising in women’s empowerment. This empirical study aimed to look at three key indicators of women’s empowerment: Autonomy, Self-efficacy, and Gender role equality exhibited in advertisement campaigns. The three brands chosen for analysing these three indicators were Hamam, Horlicks and Vim. Data was gathered through a structured questionnaire from 188 respondents. The study found that self-efficacy significantly influences perceived women’s empowerment. Gender role equality attitude varied with the Educational attainment. Additionally, self-efficacy partially mediated the relationship between gender role equality and perceived women’s empowerment, while autonomy moderated the link between self-efficacy and gender role equality, with high autonomy weakening the association. These results underscore Femvertising's potential to reshape societal perceptions and promote women's empowerment through empowering commercials.
Career Adaptability, Perceived Overqualification, and The Turnover Dilemma
Authors: Wibowo Winastanto , Suhariadi Fendy , Dinda Nadia Fiona Niska
Published: December 2024

This study examines the role of perceived overqualification as a mediator in the relationship between career adaptability and turnover intention among employees of PT. Kimia Farma Diagnostika. Involving 80 respondents, this study uses a quantitative approach and SEM-PLS analysis. The results show that career adaptability has a positive effect on turnover intention, where perceived overqualification functions as a mediator. Employees who feel they have higher abilities than needed tend to seek opportunities that are more in line with their potential, which increases the intention to leave the organization. These findings provide important insights for management in designing more effective employee retention strategies, as well as enrich the literature by combining these concepts. By understanding the factors that influence employees' decisions to stay or move, management can develop policies that increase job satisfaction and reduce turnover rates. This study also identifies limitations, such as the limited number of respondents, and suggests further research.
Does Self-Efficacy Moderate the Effect of Customer Incivility on Work Engagement?
Authors: Wisesa I Made Siddhi , Rahyuda Agoes Ganesha
Published: December 2024

This research aims to determine how customer incivility can impact frontlines’ work engagement and how self-efficacy moderates the relationship between customer incivility and frontlines’ work engagement. This research uses a saturated or census sampling technique, which is included in non-probability sampling with a sample of 70 participants. The data for this research is obtained through questionnaires and interviews. This research uses Moderated Regression Analysis (MRA) using the Statistical Package for the Social Sciences (SPSS). Research analysis shows that customer incivility can reduce the level of work engagement of frontline employees. A high level of self-efficacy can maintain or increase the level of work engagement of frontline employees even though these employees experience customer incivility.
The Adequacy of Cybersecurity in Financial Institutions in Zimbabwe
Authors: Mashizha Margaret , Kanengoni Pestalos
Published: December 2024

A well-protected cyber environment is virtually non-existent in the technical landscape of the 21st century, exposing financial institutions to risk. To preserve the well-being and trust of the public within financial systems, the financial sector needs a stable and robust cybersecurity system. This study sought to determine the causes and sources of cybercrime, the degree to which banks are aware of cybercrime, and to assess their understanding of cybersecurity and possible solutions to cyber threats. A sample of five commercial banks in Zimbabwe was surveyed and data was analyzed using descriptive statistics. Findings revealed low awareness of cybersecurity, the absence of anti-virus protection, and a cybersecurity framework. Further, the study established that financial institutions are not providing adequate financial support and training relating to cybersecurity. The study recommends investment in cybersecurity, training, and awareness campaigns to cultivate a culture of cyber alertness.
Tutoría y enseñanza en programas universitarios de pregrado
Authors: Valdez Delgado Silvia Lucía Anita , Díaz Barba Armando Edwin , Sotomayor Ruiz Rino Nicanor , Delgado Arenas Raúl
Published: December 2024

This article presents the results of a comparative analysis of student perceptions regarding the effectiveness of tutoring programs at the Universidad Nacional Agraria la Molina (UNALM) and the Universidad César Vallejo (UCV). Through a survey, the following tutorial aspects were evaluated: advice regarding the study plan, academic and professional guidance, monitoring of academic progress, identification of professional goals and skill development, emotional and motivational support, and assistance in solving career-related problems. Significant differences were found between both universities, allowing for the identification of strengths and areas for improvement in each institution’s tutoring programs.
Aperfeiçoamento e análise de desempenho de secador solar no semiárido potiguar
Authors: Lucena Mécia Murielle dos Santos , Duarte Matheus Lima , Silva Igor , Varella Fabiana Karla de Oliveira Martins
Published: December 2024

O secador solar é uma tecnologia alternativa utilizada para realizar a secagem de alimentos fazendo o uso da energia solar térmica, uma fonte de origem limpa e renovável, visto que este tipo de energia não gera resíduos poluentes ao meio ambiente. A aplicação dessa tecnologia em regiões do semiárido potiguar é demasiadamente satisfatória, visto que essa região possui uma alta incidência solar. A desidratação de alimentos a partir da energia solar térmica trás benesses a alimentos com significativo grau de perecibilidade, pois aumenta a durabilidade e auxilia em questões de armazenamento e transporte. No presente estudo foi operado um secador solar de exposição direta e de baixo custo a fim de otimizar o processo de secagem de alimentos a partir de alterações realizadas no protótipo original. Ao final da análise dos resultados e comparações foi possível averiguar que as modificações viabilizaram agilizar o processo de desidratação.
Glial Derived Neurotrophic Factor and Schizophrenia Spectrum Disorders: A Scoping Review
Authors: Ricci Valerio , De Berardis Domenico , Martinotti Giovanni , Maina Giuseppe
Published: December 2024

Background:

Psychotic disorders, characterized by altered brain function, significantly
impair reality perception. The neurodevelopmental hypothesis suggests these disorders originate
from early brain development disruptions. Glial-derived neurotrophic factor (GDNF) is crucial for
neuronal survival and differentiation, especially in dopaminergic neurons, and shows promise in
neurodegenerative and neuropsychiatric conditions.

Objectives:

This scoping review aims to examine the role of GDNF in schizophrenia spectrum disorders
and substance-induced psychoses, integrating knowledge on the neurobiological mechanisms
and therapeutic potential of GDNF.

Methods:

A comprehensive literature search was conducted using PubMed and Scopus databases
from January 2001 onwards. Data extraction focused on GDNF levels, cognitive function, antipsychotic
treatment effects, and genetic studies.

Results:

The review included 25 studies (18 human, 7 animal). While some studies demonstrated inconsistent
results regarding GDNF serum levels in schizophrenic patients, the majority reported correlations
between GDNF levels and cognitive functions. Animal studies underscored GDNF's role in
stress response, drug-induced neurotoxicity, and dopamine signaling abnormalities. Genetic studies
revealed potential associations between GDNF gene polymorphisms and schizophrenia susceptibility,
though findings were mixed.

Discussion:

GDNF plays a significant role in cognitive functions and neuroprotection in schizophrenia.
The variability in study results underscores the complexity of GDNF's involvement. The therapeutic
potential of GDNF in psychotic disorders remains unclear, necessitating further research to
clarify its efficacy and safety.

Conclusion:

This review emphasizes the importance of integrated biomarker strategies, gene therapy
approaches, and precision medicine in advancing the understanding and treatment of psychotic disorders.
Development and Validation of RP-HPLC Method for Roflumilast Nano Particles in Rat Plasma for Pharmacokinetic Study Analysis
Authors: Mehmood Yasir , Shahid Hira
Published: December 2024

Aims:

The aim of this study is to develop a sensitive, specific, rapid, and precise reverse-
phase high-performance liquid chromatography (RP-HPLC) method and validate it to determine
the Roflumilast in rat plasma.

Background:

This study was aimed at developing a simple HPLC method for the detection of Roflumilast
in rat plasma after ingestion of nanoparticles into the rat. A bioanalytical method was developed
and validated.

Methodology:

The drug sample (Roflumilast) was eluted isocratically using a mobile phase of Ammonium
acetate buffer (pH = 7.0), acetonitrile, and methanol (20:40:40, v/v/v) made up the mobile
phase on a Phenomenex C-18 (150mm x 4.68mm pore size 5-micron analytical column. The
drug was quantitatively determined at a UV wavelength of 254 nm using a standard calibration
curve spanning the range of 1.5, 3.0, 4.5, 6.0, 7.5μg/mL-1

Results:

The results showed that the limits of quantitation (LOQ) and detection (LOD) were 0.18
μg/ml and 0.54μg/ml, respectively. For both the intra-day and inter-day analysis, relative standard
deviation (% RSD) was less than 2%, and the drug’s percentage accuracy was between 96% and
98%.

Conclusion:

As per the established protocols, the developed method was quantitatively assessed
for its intended use in terms of specificity, linearity, accuracy, precision, robustness, and sensitivity
analysis. Roflumilast-loaded nanoparticles were effectively used to determine the drug entrapment
efficiency using the currently validated RP-HPLC method. Besides, highly efficient drug extraction
from plasma was attained, and mobile phase composition was suitable to the pharmacokinetic
study of Roflumilast-loaded nanoparticles in rats.
The Synergy of Work Allowances, Sports Facilities, and Motivation in Enhancing Athlete Achievement
Authors:   Universitas Muhammadiyah Jember, Indonesia, Qomariah Nurul , Suryandari Andriana ,   Universitas Muhammadiyah Jember, Indonesia, Martini Ni Nyoman Putu ,   Universitas Muhammadiyah Jember, Indonesia, Sari Mutiara Dwi ,   Universitas Muhammadiyah Malaysia, Malaysia
Published: December 2024

In the era of globalization, athlete achievement is very important for a country or sports institution, whether in the form of medals, records, or positions in championships, which are also measured by increasing achievement. It is important for institutions or organizations to be able to maintain the achievements of athletes that have been achieved. This study has the following objectives: determine the impact of work allowances and sports facilities on motivation and athlete achievement under the auspices of the Jember Regency Youth and Sports Office. The population in this study was 399 athletes from 35 sports branches in the Jember Regency Dispora. The number of samples was determined by as many as 150 respondents. Data analysis used SEM with WarpPLS 7.0. The results of this study indicate that the work allowance variable has a positive and significant effect on motivation. The sports facility variable has a positive effect on motivation but is not significant. The work allowances variable does not have a significant effect on athlete achievement. The sports facilities variable has a positive and significant effect on athlete achievement. The motivation variable has a positive and significant effect on the achievement of athletes from the Jember Regency Diaspora. The work allowances variable has a positive and significant effect on the achievement of athletes from the Jember Regency Dispora through motivation. The sports facilities variable has a positive effect on the athlete achievement of athletes from Jember Regency through motivation. The practical implications that can be contributed from this study are that sports facilities do not affect motivation but do affect achievement. Work allowances contribute to motivation but do not affect athlete achievement. Therefore, sports facilities must improve their benefits for motivation to achieve more. Work allowances also need to be improved so that athlete retention increases.
Uncovering the Power of Consumer Involvement: How Perceived Quality Drives E-Commerce Behavior?
Authors:   Faculty of Economics, Universitas Islam Sultan Agung, Indonesia, Asyhari Asyhari , Pudjihastuti Sri Hindah ,   Faculty of Economics, Universitas Islam Sultan Agung, Indonesia, Alfionita Vina ,   Faculty of Economics, Universitas Islam Sultan Agung, Indonesia, Othman Azmahani Yaacob ,   Faculty of Business Management, Universiti Teknologi MARA, Malaysia
Published: December 2024

Consumer involvement is an important factor in shaping consumer behavior, such as purchase intention, satisfaction, and loyalty. However, scholars have not explored its impact on e-commerce. This study aims to investigate the impact of consumer involvement, which consists of opinion-seeking, product variety, and product involvement, on perceived quality and e-commerce behavior. A quantitative research design uses 300 respondents from Oclo Official consumers in Semarang City. Data analysis using Partial Least Square Structural Equation Model (PLS-SEM) with SmartPLS version 4.0.9. The findings revealed that opining-seeking, product variety, and involvement have a positive effect on perceived quality. Other findings demonstrated that perceived quality has a positive effect on e-commerce behavior. Finally, the result concluded that perceived quality can mediate relationship factors in e-commerce behavior. The implication of this study offers new insights into the importance of consumer involvement in e-commerce. The most important implication is that e-commerce businesses must enhance perceived product quality, as it directly influences customer behavior, such as purchase intention, satisfaction, and loyalty. Companies can strengthen long-term relationships with consumers by offering a wider variety of products and maintaining high quality.
Assessment co-creation mediated by technology and its relation to university students' agency and self-regulation: The professors' perspective
Authors: Santana Martel Jennifer Saray , Pérez Garcías Adolfina
Published: December 2024

Assessment co-creation is emerging with increasing frequency in co-designing learning practices in technology-enhanced learning environments in higher education. Thus, the objective of this study is to analyse whether these practices are related to students’ self-regulation and agency. Therefore, a qualitative multi-case study from a phenomenology perspective was conducted. To collect data, six professors were interviewed (four female and two males) following a semi-structured approach in order to gain their perceptions of their experiences in the assessment co-creation process and their views on the relationship of this process to students’ self-regulation and agency. To analyse the data, a deductive coding method was followed using the data analysis tool Atlas.ti. The findings show that from the professors’ points of view various relationships exist between the assessment co-creation mediated by technologies and students’ self-regulation and agency. Interviewees perceived that assessment co-creation activated both students’ agency and their self-regulation skills. From the results, it is suggested that assessment co-creation can enhance students’ self-regulation in all its phases but mainly in terms of forethought. Similarly, students’ agency seems to be boosted by the co-design process, highlighting the effect on the individual dimension. Accordingly, and related to the more developed areas of students’ self-regulation and agency, motivation seems to increase while co-creating.
Patterns of development of export cargo flows of grain crops from the southern regions of Russia
Authors: Berezin А. O. , Speranskaya Y. A. , Prozorov K. V.
Published: December 2024

The topic of the study is to identify patterns of development of export cargo flows of grain crops from the southern regions of the Russian Federation. The analysis of the volumes of grain shipments from the ports of the AzovBlack Sea and Caspian basins separately was carried out. The main consumers and importers of Russian grain are highlighted, as well as the main directions in the transportation of grain cargoes from the southern regions of Russia. Various standard sizes of bags involved in the transportation of this category of goods are considered, as well as the reasons for their use in the export of Russian grain from the ports of the Caspian Sea and the Black SeaAzov basin. The main types of grain crops to be exported from the southern regions of the Russian Federation are noted, including their shares of the total volume of all transported grain. The dynamics of changes in the volume of transportation of individual grain crops from the ports of the Black SeaAzov basin and the Caspian Sea, respectively, is presented. The trend towards a stable annual increase in export cargo flows of Russian grain is analyzed. The seasonality in the export of the studied category of goods is considered, annual temporary peaks in the curves of cargo flows corresponding to a sharp increase in the volume of grain shipments are highlighted. The presence of patterns in the behavior of the curves of grain export cargo flows from the southern regions of Russia is noted, manifested in the similarity of the shapes of the curves of transportation volumes over various years, as well as in their desire to approach the average curve of cargo flows calculated for the entire analyzed period. The question was raised about the possibility of taking into account the trends under consideration when forecasting changes in the volume of grain export shipments from the ports of the Black SeaAzov and Caspian basins.
Universal simulation model of the flow of ships to the sea cargo front of the port
Authors: Kuznetsov A. L. , Chistotin О. A. , Zatolokina М. J.
Published: December 2024

The article describes the results of completed research aimed at clarifying the primary base of methods for technological design of ports and terminals. Along with the main parameter expected annual cargo traffic, the key for all such calculations is the structure of the ship traffic that implements this cargo flow, or the flow of the fleet of ships that sell cargo traffic. Each type of vessel is characterized by its own parameters, which determine the duration of service in the port and, ultimately, the occupancy of berths. Traditional analytical methods, without disputing the randomness of the nature of all initial and intermediate values, prescribe the use of average values for the assessment of final technological resources, correcting the results obtained by coefficients of engineering ignorance. This assumption, which makes it possible to use simple algebraic methods for working with deterministic quantities, excludes the emergence of any means of estimating the possible dispersion of values around the obtained average values. In the practice of investmentintensive facilities, such as seaports, the degree of dispersion of parameters characterizes the probability of errors of the first and second types: the creation of insufficient capacity, leading to losses from waiting in the queue for service, and the creation of excess capacity associated with the loss of excess capitalization. There is no objective measure that determines the balance between these losses, since the decision is purely entrepreneurial, based on the risk of losses and possible gains. This study describes a tool that allows you to make appropriate entrepreneurial decisions fairly objectively.
Summary of the results of field and laboratory studies of hydraulic resistance during channel bending
Authors: Zhuravlev M. V. , Gladkov G. L. , Belyakov P. V.
Published: December 2024

The reliability of channel forecasts, performed using mathematical modeling methods in the design of engineering activities on shipping rivers, largely depends on the accuracy of the assessment of hydraulic resistance and sediment transport parameters. Therefore, the hydraulic resistance of natural channels is one of the largest problems in the dynamics of channel flows and is the object of close attention of scientists. In the resistance of natural channels, roughness appears in three forms: the first of them is the roughness of the granular surface of the bottom; the second is the roughness created by boulders and the third type is the roughness of microforms: ripples and ridges. Channel mesoforms also contribute to the resistance to water movement: spits, side streams, middle streams, islands, bends of the channel and such complex formations as riffles. This type of resistance is usually called the resistance of the channel form. The resistance of the natural channel shape due to the movement and deformation of mesoforms can change significantly over time. The complexity and insufficient study of this issue significantly limit the possibilities of a theoretical approach to its solution. Therefore, the obtained results are mainly empirical or semiempirical in nature. The paper presents the results of experimental and field studies that allowed us to identify the main features of flow movement in winding sections of rivers. One of the features of flow movement at channel turns is the possibility of additional energy losses. The total resistance of a curved section of a channel is made up of three main parts: the resistance of the granular surface of the bottom, the resistance of the bottom ridges, and the resistance of the channel shape. The additional resistance created by the bend depends on the curvature of the channel, the rate of change in depth along the length of the bend, and also reflects the impact of side streams formed near the convex bank on the flow.
Review of modern technologies of vessel monitoring in the water areas of the inland waterways using video surveillance tools
Authors: Bespalov A. P. , Karetnikov V. V.
Published: December 2024

At present, there is a problem on inland waterways located within the boundaries of large settlements to ensure monitoring of vessel traffic, including small vessels. This situation is due to limitations on the use of traditional means of monitoring of inland waterway vessels, caused primarily by restrictions on the use of radar systems and radiotechnical means operating in the ultrashortwave frequency range within the city limits. At the same time in large cities of the Russian Federation implemented and successfully used video surveillance systems. The system operating in the city of Moscow to monitor the water area within the city as part of the city traffic control system is considered. Most of the sections of inland waterways located within the limits of St. Petersburg fall within the range of the cameras. The article considers possible approaches to use the city video surveillance system for monitoring the water area within the city limits of St. Petersburg. The paper describes technologies based on artificial neural networks potentially suitable for identification of ships and determination of their exact location at a given moment of time. Advantages and disadvantages of the considered methods are analyzed, as well as a variant of solving the inverse problem of bearing of ships (from the shore) using video surveillance systems consisting of two cameras is proposed. The algorithm of the system operation for identification and determination of vessel movement parameters is proposed. Domestic and foreign experience of solving the problems of vessel identification using video surveillance systems, as well as determining the parameters of vessel movement is analyzed. Several neural networks (object detection, text recognition) are proposed as a solution as a basis for further study of the described problem.
Measurement of residual deviations of the ship’s hull axis from the initial positio
Authors: Baryshnikov S. O. , Krasiuk A. B. , Chistov V. B.
Published: December 2024

The article discusses a method for measuring deviations of the deformed axis of a ship’s hull form the initial (non deformed) position that arise with a general residual bend or deflection. The Rules of the Russian Classification Society (RCS) and the Rules of the Russian Maritime Register of Shipping (RMRS) do not have standards for assessing the main characteristics of such deformations (the maximum bend of deflection arrow). Nevertheless, this defect has a significant impact on the overall strength and reliability of the ship’s hull in operation and can cause sudden failure. The presence of general residual deformations of the hull not only negatively affects the strength and reliability of the hull, but also complicated cargo operations and leads to errors in determining the amount of cargo in the tanks of tankers. The result of the research presented in this article is a new technique for measuring deviations of the hull axis of a ship with general residual deformations from its initial nondeformed state, mathematical dependencies for calculating the exact coordinates of the deformed hull axis. This will make it possible to more accurately assess the level of overall strength of the hull, and, if necessary, develop a technological process for elimination the overall residual bend (deflection). The procedure for determining the parameters of general residual deformations is further complicated by the fact that the maximum inflection (deflection) arrow obtained from the measurement results also includes an elastic component. The developed mathematical dependencies make it possible to exclude from the maximum arrow of bend (deflection) obtained as a result of measurements the elastic component caused by the load acting on the ship’s hull. A device has been developed for recording deviations of the axis of a deformed ship’s hull from the initial (nondeformed) position. The new measurement technique and this device will allow measurements not only when the vessel is on a slip or in a dock, but also afloat at quay wall. Due to the fact that the geometric characteristics of the section along the length of the ship’s hull change, the optimal number of measured sections (5–7) in the area of the cylindrical insert is justified, with the length of each section a multiple of the frame spacing. An example is given of calculating the ordinates of the residual curved axis of the body based on the measurement results and determining the curvature in each of the deformed sections.
Improving the reliability of power drives for marine and crane equipment by schematic layout methods
Authors: Ivanov A. N. , Matveeva E. V.
Published: December 2024

This article is devoted to the problem of increasing the reliability of special power drives designed exclusively on the basis of cylindrical gear ordinary and singlerow planetary mechanisms that allow you to create multifunctional, hightech products endowed with equalizing properties that eliminate overestimation of the mass of nodes and the associated mass of metal structures, provide the product with high technical, economic and operational performance. Complex composite gears with a differential are considered, in which all links are movable, which allows it to work with various functions of branching power flows: distribute movement to several consumers; summarize several independent movements requiring rotation of their input links in one or different directions; create systems with superimposed adjusting motion and systems with stepless regulation, as well as solve other tasks. The main attention is paid to torque distributors, which, with one leading link, have several driven links. Distributors with two slave links are most often used in marine and crane equipment. The development of the theory of transmission of such devices has its own characteristics and is impossible without taking into account their energy kinematic state. The properties of the differential mechanism are formulated and analytical dependencies are built on their basis, with the help of which it is possible to create a distributor with specified kinematic, power, and energy parameters, taking into account the schematic layout requirements. To increase the reliability of distributors with a high value of the total gear ratio, solutions have been developed that simplify the design of the power drive; for structures providing a given misaligned arrangement of the drive shafts, solutions have been proposed that exclude the presence of open gears. All this taken together will contribute to the development of scientific approaches to the design and design of modern models of power drives.
A multi–level system for ensuring the reliability of marine mechanical systems at the stages of the life cycle
Authors: Moseyko E. S. , Ol’khovik E. O. , Rud V. U.
Published: December 2024

The operation of vessels in the waters of the Northern Sea Route imposes additional requirements on ship mechanical equipment in accordance with Chapter 6 of the Polar Code. The most urgent scientific tasks include the following: designing new iceclass vessels for operation in the Arctic and extending the service life of the existing Arctic fleet, which should ensure operability at low air temperatures. Forecasting the service life of marine mechanical systems, taking into account the effects of external cyclic loads and the marine corrosive environment, is a complex complex task, for which it is necessary to consider all stages of the life cycle from design to the moment of termination of their operation. In order to improve the existing methods of reliability assessment, accidents on ships operating in Polar waters were considered. A resource management program is proposed that allows you to systematize organizational and technical measures not only during operation, but also allows you to make forecasts at the design stage. A risk management program is proposed that allows you to link organizational and technical measures aimed at identifying the elements of marine mechanical systems that most need attention, thereby effectively distributing maintenance. At the stages of the life cycle, a multilevel reliability assurance system is proposed, including three levels of assessment: reliability management; resource management and risk management.
Patterns of lean methane-air mixtures combustion in piston engine
Authors: Galiev I. R.
Published: December 2024

The article is devoted to the study of the patterns of combustion of lean methaneair mixtures in marine internal combustion engine. Literature review shows that the implementation of combustion technology for a homogeneous lean methaneair mixture will increase the compression ratio, reduce fuel consumption and improve the environmental engine performance. However due to an increase in misfires and a decrease in the speed of flame propagation, the combustion of lean methaneair mixtures remains an unresolved problem. The article studies the influence of the excess air coefficient (from 1 to 1.4) on the turbulent combustion regime (assessed by the Karlowitz and Damkoehler criteria), the completeness and rate of fuel combustion. It was revealed that depletion of the air fuel mixture under conditions of intense turbulence leads to an increase in the Karlowitz criterion and a decrease in the Damköhler criterion. This indicates that the rate of chemical reactions in the flame front decreases, as a result of which the combustion process is characterized by stretching and rupture of the flame front. Therefore, to intensify the combustion of lean methaneair mixtures, it is advisable to increase the average speed of the vortex flow, and not the intensity of turbulence. A study of the influence of the excess air coefficient on the completeness and rate of fuel combustion showed that depletion of the mixture leads to a decrease in the completeness of fuel combustion from 93.5 % (at α=1) to 83 % (at α=1.4). The combustion rates also decrease and their maximum values shift from 13° (at α=1) to 24° (at α=1.4) degrees after top dead center. Therefore for efficient engine operation on lean mixtures, it is necessary to increase the fuel combustion rate through additional swirling of the gasair mixture or the use of combustion promoters.
Development of automation and control software for charging systems of multirotor small unmanned aircraft systems for tasks of cargo seaports
Authors: Voznesensky E. A. , Maiorov N. N. , Terekhov А. N.
Published: December 2024

The paper considers the situation of using an unmanned aircraft system to perform autonomous flights between cargo port areas, for example, to collect data for building digital spatial models or to transfer a certain type of cargo. It is noted that due to the considerable size and remoteness of cargo terminals from each other it is necessary to place a network of automated charging stations. The efficiency of autonomous flights is substantiated and a new model of flight assignment of an unmanned aircraft system is given for solving the routing problem, taking into account the location of charging station sites, for example, in cargo port areas. To solve the set tasks, a new hardware system for charging unmanned aerial systems considering a receiver module with a coil on board and a ground landing system for charging is considered, circuit diagrams are given and constraints for performing the battery charging process are specified. The fragments of programme codes of automation of the graphical interface of the webserver with display of all parameters and calculation of the coefficient of efficiency at charging are resulted. The choice of Arduino IDE software environment is justified. The possibility of using the developed automated station for battery charging for a large class of drones of mulitirotor type is noted. On the basis of a series of experiments in the flight research field of the laboratory of unmanned aircraft systems of the SUAI, it is established that the charging station together with the receiving module managed to achieve the efficiency of charge transfer at the level of 73.7 %. The obtained values of efficiency allow to draw a conclusion about the possibility of practical use for real transport tasks and the possibility of network deployment, in particular, on the dedicated specialised areas of the cargo port. The developed automation subprogramme for the deployment of a network of charging stations (e. g. in different areas of the port) allows to create an information system for monitoring the operation of charging stations, which significantly increases the controllability and reliability of the system.
Universidade Popular das Madres de Plaza de Mayo
Authors: Silva Ivandilson Miranda , Santos Luciano Costa
Published: December 2024

Este artigo é parte da tese de Doutorado pelo Programa de Educação e Contemporaneidade (PPGEduC) da Universidade do Estado da Bahia, intitulada: “ La Calle, La Plaza, La Palabra”: Educação Popular, Contemporaneidade e Experiência da Universidade Das Madres de La Plaza de Mayo e, também, da continuidade do diálogo entre Universidade do Estado da Bahia e a Universidade Nacional das Madres. O texto objetiva apresentar um histórico da Universidade Popular das Madres da Praça de Maio e seu processo de transição para Universidade Nacional, o método adotado nesta pesquisa é o fenomenológico com entrevista narrativa, o resultado é a possibilidade de firmar parceria entre a UNEB e a Universidade das Madres considerando as perspectivas de diálogo entre Brasil/Argentina para pensar pautas científicas e ações políticas em um contexto de reorganização dos movimentos sociais na América Latina, nesse sentido, concluímos que é urgente a consolidação de Universidades Populares no Brasil.
"Why Patients Should Teach Medical Professionals How to Use AI in Healthcare" (Preprint)
Authors: Ostherr Kirsten , Huang Waverly , Park Ana , Punnen Tom , Tadigotla Bhavik , Robinson Valencia , Downing Andrea
Published: December 2024

UNSTRUCTURED

Efforts to regulate AI and educate clinicians to implement ethical and trustworthy AI have rarely included patient perspectives on how and when AI should be used. This gap puts patients at risk and leaves trainees unprepared to integrate AI into patient care. We discuss the need for new approaches that integrate patient perspectives into the training of health professionals to foster an inclusive and patient-centered future of AI in healthcare.