bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis and characterization of some new coumarin based thiazole derivatives-invitro activity against urinary tract infection
Authors: K Veeresh , M Manappa , K Basayya , H Basavaraj , K Vinayak , N Shravan L
Published: December 2024

A Series of coumarin based thiazole derivatives of ethyl 2 imino 4 methyl − 3 (2-(2({2-OXO,4 Substituted)-2 H chromene 7-yl)oxy)acetamido)thiazolidine 5-carboxylate (5a-m) were synthesized by the reaction between resorcinol and ethyl acetate to form coumarin derivatives. Further by reacting with substituted aldehydes formed coumarin based thiazole derivatives. The compounds were characterized by TLC, IR, NMR and mass spectrometry and synthesized compounds were carried out antimicrobial and urinary tract anti-infective activities. Among the series of compounds 5l, 5g showed good antibacterial activity and 5m and 5e showed moderate antibacterial activity and series of compounds 5l, 5e and 5g showed excellent antifungal activity. The compounds 5l, 5e and 5g were found active against Gram positive bacteria i.e. Staphylococcus Aureus at concentration of (2µg/ml). The compounds 5m, 5e and 5g were found active against Gram negative bacteria i.e. Escherichia Coli at concentration of (2µg/ml). The compound 5l, 5e and 5gshowed excellent antifungal activity against Candida Albicans and Aspergillus Niger at concentration of(4µg/ml).
Effects of eye closure on the spiking activity of human lateral geniculate neurons
Authors: Roelfsema Pieter , Self Matthew , Neuenschwander Sergio , Silva-Filho Hélio , Goulart Lissa , Vilela-Filho Osvaldo
Published: December 2024

We recorded spiking activity in the human lateral geniculate nucleus (LGN), which links the retina with the primary visual cortex. The cells had receptive-field properties resembling those of monkeys. Responses were largely monocular and the closure of one eye decreased the spontaneous activity of neurons with broader spikes preferring this eye and increased the activity of neurons with narrower spikes, suggesting that interneurons might gate LGN activity during eye closure.
Exploring the Drivers of AI Adoption: A Meta-Analysis of Technological, Organizational and Environmental (TOE) Factors
Authors: Paiva Jerónimo
Published: December 2024

The Artificial Intelligence (AI) revolution is transforming the corporate sector and rapidly accelerating the process of digital transformation. Based on a selection of 12 studies for meta-analysis with 3398 respondents from various industries and countries, this study investigates the factors influencing the adoption of AI using the Technology-Organization-Environment (TOE) framework. The results show that seven out of eight TOE factors have a statistically significant effect on AI adoption. Technological factors, including Compatibility (CPT) and Relative Advantage (ADV) have a positive impact, while Complexity (CX) was found to be statistically insignificant. Organizational factors, particularly Organizational Readiness (RE) and Management Support (MS) have a positive moderate effect. Environmental factors reveal that Government Support (GOV), Competitive Pressure (COP) and Vendor Partnership (VP) have a strong and positive impact. The study emphasizes the importance of Vendor Partnership and Organizational Readiness as critical factors in fostering AI adoption. Finally, this research will be advantageous for researchers and practitioners looking to explore the determinants driving significant AI adoption.
Harnessing Exploratory Data Analysis for Robust Financial Fraud Detection and Model Enhancement
Authors: Lokanan Mark
Published: December 2024

This paper explores the critical role of Exploratory Data Analysis (EDA) in detecting fraud and ensuring robust machine learning model performance. By applying both univariate and multivariate EDA techniques, including graphical and non-graphical methods, key trends and relationships within the dataset were uncovered. The analysis reveals significant variability in financial data associated with fraud cases, particularly highlighting the increased scale of fraud in the early 2000s. The EDA process facilitated the identification of outliers, correlations, and potential data quality issues, such as missing values and inconsistencies. Additionally, EDA informed the necessary data transformations and feature engineering steps that ultimately improved the performance of machine learning models. Using Random Forest and Classification and Regression Trees algorithms, the models demonstrated strong classification accuracy and generalized effectively to new data. The findings underscore the importance of EDA in the data modeling process, particularly in fraud detection, where understanding underlying patterns and relationships is essential for developing reliable predictive models.
Digitalisation and sustainable energy sector transformation: analysis of key trends
Authors: Kasianenko Volodymyr , Fedotov Volodymyr , Harkusha Vladyslav
Published: December 2024

The digitalisation of the energy sector and investment in modern digital solutions aim to optimise the use of energy resources, reduce the burden on the environment, increase the rate of decarbonisation of the economy, ensure the decentralisation of energy supply and more efficiently use the existing energy infrastructure. In the paper, a study of digitalisation processes and their impact on the sustainable development of the energy sector was carried out to form a system of coordinated actions within the framework of the development and promotion of the concept of smart transformations in the energy sector for the transition to a model of sustainable and environmentally responsible development. The authors conducted a structural analysis to study digitalisation trends in the energy industry and their impact on the decarbonisation of the economy. Features, trends, and potential for the digitalisation of the energy sector are analysed based on reports from the International Energy Association. The authors emphasised that the global energy industry was the first to actively implement digital technologies and information systems to optimise energy supply and implement transformational processes. In recent years, there has been a significant increase, more than 20%, in energy companies' investment in digital technologies. The work found that implementing digital technologies can optimise energy costs, and the total savings from these digital measures can amount to about 80 billion US dollars annually by 2040. The paper defines the effects of the digitalisation of the energy system: ensuring carbon neutrality with the lowest consumer costs, forming a fair system of interaction between consumers and stakeholders, stimulating economic growth in all sectors due to the development of new types of economic activity, creating jobs, changing the range of goods and services of enterprises. The paper concluded that stimulating digitisation and investing in digital solutions, such as network optimisation at the distribution level, will help reduce further capital costs and allow faster development of electric transport, decentralised renewable energy sources, heat pumps and other technologies, thanks to more efficient use of existing infrastructure.
Overcoming high mortality of innovative ideas (‘valley of death’) for scientific and educational environment: a bibliometric analysis
Authors: Rykova Karyna
Published: December 2024

The study focuses on the problem of the gap between innovative ideas and scientific discoveries and their practical implementation and commercialization. The purpose of the article is to analyse the scientific basis and main tendencies of the issue of high mortality of innovative ideas in scientific and educational environment (‘Valley of Death’). Therefore, the bibliographic analysis of published scientific articles on the mortality of innovative ideas is conducted. The methodology is based on data analysis from the Scopus scientometric database and R-Studio software. At the first stage of the study, a research infrastructure was created using the scientometric database Scopus and an analysis of literary sources was carried out. The second stage of the study focused on bibliographic analysis of the scientific documents indexed by Scopus over a 20-year period (2003-2023). This period was chosen to capture developments in the field, identify evolving trends, and trace how different aspects of the Valley of Death have been studied and addressed over time. The chosen keyword was "Valley of Death in innovation" (172 documents). This analysis also covered the study of the network of collaboration between authors, the publication trends of scientific papers, the estimation of the average number of citations of papers and the discovery of a thematic map. The resulting visual information was a valuable tool for studying current patterns. The results of the analysis indicated an interest in the mortality of innovation processes and a growing number of scientific literatures on this topic. It was found that this research problem started a long time ago but gained significant interest after 2010. The largest number of published works belongs to the USA. Research on international cooperation also shows that many countries are well integrated into scientific activities. A global science collaboration between the USA, Germany, Canada and the UK facilitates the sharing of knowledge and resources to advance innovation. The obtained results highlight the importance of developing sustainable strategies (the key strategies were proposed and described) and building networks between academic institutions, businesses and governments to overcome the "Valley of Death". This study can be used as a basis for further scientific research in this field.
Corporate governance structures and their implications on audit quality: UK evidence
Authors: Simitsis Georgios , I. Kyriakou Maria , Pazarskis Michail
Published: December 2024

This study evaluates the impact of corporate governance variables on audit quality in the United Kingdom (UK). The aim of the study is to ascertain the influence of board size, chief executive officer’s (CEO) dual role, and audit committee independence on audit quality. Two different proxies of audit quality were employed: the level of discretionary accruals and auditor size. The sample comprised 1,306 firms listed on the FTSE All Share Index for a long period covering 2012–2022. Different methodologies were employed to reach conclusions. Panel least squares and logit regressions provided robust results. Specifically, the results imply a positive relationship between board size, audit committee independence, and audit quality. Interestingly, CEO duality does not seem to alleviate audit quality levels. Contrary to many research findings and regulatory concerns, the CEO’s dual role is positively related to both audit quality proxies. All independent variables in the panel least squares model are statistically significant at conventional significance levels. The logit model provides unequivocal support to the beneficial role of board size on audit quality, at all levels of significance (p-value 0.00). The UK’s “comply or explain” regime offers a unique setting for future research on several corporate governance variables.
Current opportunities for the prevention and treatment of carbohydrate metabolism disorders
Authors: Zilov A. V. , Bolieva L. Z.
Published: December 2024

Diabetes mellitus poses a significant threat to the health and lives of people worldwide. Consequently, the timely identification of individuals at risk and the prevention of disease development are of utmost importance. Increasing physical activity, reducing body weight, and quitting smoking are effective measures for preventing type 2 diabetes. When lifestyle modifications are insufficient, pharmacological glucose-lowering therapy is prescribed. The endocrinologist’s arsenal is dominated by drugs that have a predominant effect on hyperglycemia. Metformin is the 1st line of therapy for disorders of carbohydrate metabolism. It is known that insulin resistance is the main cause of the development and progression of complications of diabetes mellitus. Correction of insulin resistance looks like a promising drug tactic. However, the choice of a drug for these purposes is currently limited. Currently, new, promising drugs are being developed that can increase tissue sensitivity to insulin. Subetta is an original insulin sensitizer that helps to enhance insulin-dependent glucose metabolism. This is a complex drug that increases the sensitivity of tissues to insulin, and normalizes the function of the vascular endothelium, as well as helps to increase the level of adiponectin. A decrease in glycemic parameters, a reduction of the insulin resistance index (HOMA-index) and weight stabilization has been shown in the clinical studies. All-Russian observational non-interventional study is planned to assess the effectiveness of Subetta in real-world clinical practice for patients with prediabetes or type 2 diabetes (SILA). The study includes data from 2,500 patients approximately over the age of 18. The findings of this programme enable a comprehensive evaluation of the effectiveness of combined glucose-lowering therapy in conjunction with Subetta, based on the dynamic assessment of both clinical and laboratory parameters, as well as quality of life questionnaires.
Green Innovation as a Mediator between CSR, Ownership Concentration, and Financial Performance
Authors: Dewi Vinda Auralia Kesuma , Hadiwibowo Imam , Azis Mohammad Taufik
Published: December 2024

This study examines the mediating role of green innovation in the relationship between Corporate Social Responsibility (CSR), Ownership Concentration (OC), and Financial Performance (FP) in the energy and basic materials sector in Indonesia. Data from 20 companies from 2020 to 2023 were analyzed using panel data regression and Sobel test. The findings show that CSR positively affects GI but has no significant direct effect on FP. Meanwhile, OC has no significant effect on GI and a negative effect on FP. Additionally, GI negatively affects financial performance but mediates the positive relationship between CSR and FP. However, GI does not significantly mediate the relationship between OC and FP. These results highlight the importance of aligning sustainable practices with a company's long-term strategy to enhance company value. This research contributes to understanding the dynamic interaction between CSR, governance structure, and innovation in achieving sustainability and profitability goals.
Sediment transport characteristics at the flood-event scale in the Minjiang River Basin, China
Authors: Wang Zhili , Li Danxun , Liu Shangwu , Han Jianjun , Xian Ruisi
Published: December 2024

In recent years, the significant change in the runoff–sediment distribution in the upper Yangtze River has led to an increased sediment contribution from the Minjiang River Basin (MRB) to the Three Gorges Reservoir. However, previous studies on sediment load changes in the MRB have focused mainly on annual-scale characteristics, thereby neglecting features driven by floods. Therefore, this study focused on examining the changes in flood-event sediment loads in the MRB based on mathematical statistics and comprehensive measurement data. The results indicated that human activities, climate change, and seismic events have caused an increasing trend in the flood-scale sediment load in the upper MRB and a decreasing trend in the lower MRB. The changes in the flood-scale sediment modulus at low runoff erosion power levels were greater than those at high runoff erosion power levels at different abrupt-change stages. During extreme flood events, the actual sediment concentration in the MRB remained below the sediment-carrying capacity. This study provides novel insights into water resource management during the flood season in the MRB and similar basins.
GIS-based application of hydrological modelling in the Borkena Catchment, Ethiopia
Authors: Belay Ayalew Abera , Tassew Bitew Genet
Published: December 2024

Hydrologic models have been used in different river basins across the world for a better understanding of the hydrological cycle and the water resource availability. This study tested the applicability of the Hydraulic Engineering Center Hydrologic Modelling System (HEC-HMS) in the Borkena Catchment of Awash Basin. Model calibration and validation were carried out using the observed streamflow data from 1989 to1997 and from 1998 to 2002, respectively. The observed and simulated peak streamflows for calibration were 165.3 and 122.6 m3/s and for validation 197.3 and 155.2 m3/s, respectively, whereas the average volumes were 1,223 and 1,380 mm for calibration and 1,647 and 1,847 mm for validation, respectively. From these results, it is observed that HEC-HMS slightly underestimated peak flow and overestimated runoff volume in calibration and validation periods. Nash-Sutcliffe Efficiency values of 0.65 and 0.70, Coefficient of Determination of 0.69 and 0.71, and Percent Bias of 12.84 and 12.16% for calibration and validation, respectively, were obtained. It can be concluded that in areas with limited water resources and ungauged watersheds like Borkena Catchment, simulated results of this study can be used for the design of different infrastructures for flood control and prevention in the study area and adjacent catchments.
Estereotipos y convenciones
Authors: Orozco Papamija Rodrigo
Published: December 2024

Este es un ejercicio de narrativa, desde mi formación de base como diseñador, algo de literatura y la reciente cercanía con la etnografía; un relato relativo a la creación de identificadores, elementos con que solemos crear fuertes lazos de afinidad, filiaciones que muchas veces organizan cómo debemos ser y comportarnos, pertenecer a un grupo, ser unidad con ideales, aunque sea en códigos de vestuario, de piel. Coincidencia con un logo, una marca, una convención visual.
Man vs Woman: Exploring Organizational Support, Job Satisfaction, and Trust in Travel Industry Employee Commitment
Authors:   Tour and Travel Business Study Program, Politeknik Pariwisata Bali, Indonesia, Renggi Theresia Salsa Purnama , Yudhistira Putu Gde Arie ,   Tour and Travel Business Study Program, Politeknik Pariwisata Bali, Indonesia
Published: December 2024

Attention to employee welfare is a significant focus in human resource management. Companies that pay attention to employee welfare often see increased employee commitment. This study aims to analyze the direct and indirect effects of perceived organizational support on affective commitment in conventional travel agents in Bali, considering the mediating roles of job satisfaction and employee trust and the moderating role of gender. Data for this was collected through a questionnaire and a sample of 411 conventional travel agent employees in Bali. Sample selection was carried out using the purposive sampling method. The collected data will analyzed using SmartPLS 4. This study shows that perceived organizational support positively affects employees’ affective commitment at conventional travel agents in Bali. In addition, job satisfaction positively influenced employees’ affective commitment, but employee trust did not affect affective commitment. This finding also identified that job satisfaction partially mediates the relationship between perceived organizational support and affective commitment, while employee trust does not mediate the relationship. An interesting difference was seen between male and female employees. Perceived organizational support had a significant impact on female employees’ trust. This research implies that companies and management of conventional travel agencies should improve employee support, satisfaction, and well-being of male and female employees without discrimination.
Research of assessing the reliability of containers securing taking into account the actual metacentric height of the container ship
Authors: Tsarik R. S.
Published: December 2024

The study focuses on the impact of the metacentric height of container ships on the reliability of container securing systems in order to prevent container loss overboard, which is a significant issue in the shipping industry. It is noted that the increase in ship capacity is achieved by increasing the number of layers of containers stacked on deck. Dynamic loads on the securing means of containers stowed in the upper tiers of container stacks are increasing, that can be particularly dangerous in the intense rolling conditions. It is noted that the international shipping community is well aware of the significance of this issue and is working to develop solutions. Assessment of the expected reliability of securing systems and prevent container loss through a comprehensive analysis of relevant factors is considered. The complexity of this assessment lies in the presence of many uncertainties in the calculation algorithm. These uncertainties are supposed to be quantified taking into account the accumulated experience and statistical data within the framework of the TopTier industry project. Existing methods and calculation algorithms do not take into account the fact that the actual height of the center of gravity of containers differs from the accepted value. The goal of this article is to study the effect of the actual metacentric height of a container ship on the parameters of rolling and the loads on containers and their securing means depending on it. To do this, using the example of a real ultra large container ship, a comparative analysis of the effect of metacentric height on the rolling acceleration was performed. The effect of the rolling acceleration on the loads acting on the deck container stack has been shown. The necessity to take into account the actual height of the center of gravity of containers is justified for the correct determination the metacentric height of the container ship and calculation loads in order to ensure the safety of operation of container ships and prevent containers from being lost overboard.
Mathematical modelling of the process line of a multifunctional fuel gas preparation unit (MGPU) to improve its accident-free operation
Authors: Bereznyak V. N. , Bazhanov A. G.
Published: December 2024

The purpose of the research is a comprehensive study of the process line of a multifunctional fuel gas preparation unit (MGPU), creation of a mathematical model capable of predicting and controlling gas dryness in the process of MGPU operation, as well as determination of optimal parameters of the unit operation to improve accident-free operation and high productivity of the equipment using treated gas.

Methods. Mathematical modeling with the use of multiple regression model for prediction of dew point temperature and its influence on accident-free operation of the plant was carried out. The adequacy of the model was confirmed by the coefficient of determination and Fisher's criterion. An analysis of the limiting factors for the accident-free operation of the MGPU, including temperature, pressure and gas composition, is also presented. The accuracy of numerical modeling of the trouble-free operation of the MUPG process line based on the developed model of multiple regression of gas dryness was estimated using paired correlation coefficients and elasticity coefficients. 

Results. In the course of the work, the accident-free operation of the process line of MGPU was modeled based on the developed multiple regression model of gas dryness. The following interpretation of the model parameters is possible: increasing factor X1 by 1 leads to an average decrease in Y by 0.279; increasing factor X2 by 1 leads to an average increase in Y by 0.46; increasing factor X3 by 1 leads to an average increase in Y by 0.000418; increasing factor X4 by 1 leads to an average increase in Y by 13.288; increasing factor X5 by 1 leads to an average decrease in Y by 13.337; increasing factor X6 by 1 leads to an average decrease in Y by 0. According to the maximum coefficient β2=0.384 we can conclude that the factor X2 has the greatest influence on the result Y. Statistical significance of the equation was tested using the coefficient of determination and Fisher's criterion. According to the assessment of the accuracy of numerical modeling of the trouble-free operation of the MUPG process line, based on the developed model of multiple regression of gas dryness, a strong linear relationship between X1 and Y, a low linear relationship between X2 and Y, a low linear relationship between X3 and Y, a moderate linear relationship between X4 and Y, a moderate linear relationship between X5 and Y, moderate linear relationship between X6 and Y.

Conclusion. It was found that in the investigated situation: "in the possibility of prediction and control of gas dryness: justification of the hypothesis about the possibility of prediction of dew point temperature and its influence on accident-free operation" the parameters of the model are statistically significant.
Algorithmization of combat operations to extinguish fires in infectious diseases departments of medical institutions
Authors: Denisov A. N. , Sadykov I. I. , Danilov M. M. , Klyauzov A. Yu. , Shevtsov M. V. , Mareev M. A.
Published: December 2024

Purpose of research. An analysis of the problems and tasks in conducting combat operations in infectious diseases departments of medical institutions of the country allows us to talk about serious challenges facing the personnel of fire and rescue units. To develop approaches to solving these challenges, it is necessary to determine time periods for disinfection, as well as to formalize a regulatory algorithm for determining the parameters of personal respiratory protection equipment for integration into a decision support system when managing units of the gas and smoke protection service (GDSS) when extinguishing fires.

Methods. Analysis of descriptions of fires in medical institutions, numerical methods of mathematical modeling, as well as experimental studies made it possible to establish the average time pressure values in the cylinders of the breathing apparatus of gas and smoke protectors carrying out combat operations to extinguish fires in conditions of possible infection with infectious diseases, as well as the amount of time required for personnel to carrying out appropriate disinfection measures.

Results. In the course of the study, the authors found that: the average pressure values in the cylinders of breathing apparatus, which gas and smoke protection service members can use as much as possible when traveling to the fire and working on site, are 170 MPa; the lowest pressure in the cylinders of breathing apparatus when included in the unit is 2600 MPa; the time required to implement disinfection measures ranges from 81 seconds to 429 seconds.

Conclusion. Algorithmization of the calculation of air reserves in personal respiratory and vision protection equipment (RPE), a harmonious combination of artificial intelligence and computer vision technologies creates additional prerequisites for the creation of new forms and opportunities for integration into a comprehensive management decision support system for the decision maker at the fire site.
Advantages of application of variational integrators on Lie groups in problems of modeling the dynamics of mechanical systems
Authors: Moiseev I. S. , Zhilenkov A. A.
Published: December 2024

Purpose of the research is to consider advantages of application of variational integrators on Lie groups in problems of physically correct modeling of dynamics of mechanical systems and to compare them with classical nonvariational integrators.

Methods. To demonstrate the possibilities of variational integrators on Lie groups, a mathematical model of the dynamics of a physical pendulum was developed. Methods of variational calculus and methods of Lie group theory were used to construct a mathematical model of the dynamics of a physical pendulum. The Runge-Kutta method of the 4th order was used for comparative analysis of variational and nonvariational integrators. Modeling was carried out in MATLAB software.

Results. In this research, a variational integrator algorithm on Lie groups was developed to model the dynamics of a physical pendulum. To compare the variational integrators and the 4th order Runge-Kutta method, plots were constructed to show how the angular velocity along the axes, orthogonal error, total energy, and angular momentum change over time. The graphs demonstrate that although the angular velocity is the same for both methods, the Runge-Kutta method does not preserve the geometric structure of the continuous system and does not preserve the basic constant quantities of the modeled system, namely mechanical energy and momentum.

Conclusion. Numerical modeling has shown that the preservation of symplectic properties of systems and the structure of Lie groups allows to perform physically correct computer modeling of the dynamics of mechanical systems. Variational integrators on Lie groups have significant computational advantages over classical integration methods, which do not preserve the geometric structure of the continuous system and the basic constant quantities of the system, and other variational integrators, which preserve either none or one of these properties.
Protective coating of steel structures from cryogenic effects based on cement slabs
Authors: Gravit M. V. , Nedviga, E. S.
Published: December 2024

Purpose of research. The use of liquefied natural gas (LNG) as an energy carrier is expanding annually. Therefore, the purpose of this article is to analyze the regulatory requirements for the structure protection from the cryogenic liquid spill such as LNG. The article also evaluates the ability of fireprotective materials to resist not only hightemperature influences, but also low-temperature ones.

Methods. The article discusses the main methods of material testings to counteract the cryogenic liquid spill and the possibility of using fireprotective products as cryoprotective materials. The results of testing the protective system manufactured by LLC "PROSASK" are shown and analyzed. The object of the study is a fire-retardant structural system consisting of "PROSASK Fire Panel" plates. The protective system consists of two layers of flame-retardant plates "PROSASK Fire Panel" with a non-flammable membrane " in the middle, manufactured by LLC "PROSASK". And the subject of the research is the cryoprotective function of this system.

Results. The average temperature of the sample after 60 minutes cryogenic exposure was - 53 °C, conclusions were drawn about the expediency of conducting successive tests for low-temperature and fire exposure due to the high probability of fire after the cryogenic liquid spill in the presence of a flame source.

Conclusion. The article shows and analyzes the test results of the protective system manufactured by LLC "PROSASK". With the correct choice of steel grade (including the requirement for impact strength) of load-bearing structures of oil and gas facilities, it can be concluded that structures protected by a structural fire protection system with PROSASK Firepanel plates are operable after an hour of cryogenic exposure.
Mental Health Benefits of Listening to Music During COVID-19 Quarantine: Cross-Sectional Study
Authors: Xian Xuechang , Zhang Xiaoran , Zheng Danhe , Wang Yanlin
Published: December 2024

Background

COVID-19 has posed a significant global threat to public health due to its high contagion risk and lack of effective treatment. While quarantine measures have been crucial in controlling the virus’ spread, they have also contributed to negative impacts on individuals’ mental health. Music listening has emerged as a potential coping mechanism, yet it remains unclear whether mental well-being varies across music preferences.

Objective

This study examined individuals’ music-listening preferences in the context of COVID-19 quarantine and assessed the mediation pathways linking 5 types of music to mental health levels, mediated by perceived social connectedness as well as sense of security.

Methods

A web-based survey was conducted among people with quarantine experience in September 2022, in mainland China. A total of 712 valid questionnaires were returned and 596 samples were finally included in our study for mediation analysis.

Results

The results revealed that the vast majority (596/623, 96%) of respondents had music-listening experiences during the COVID-19 quarantine, with pop music emerging as the most popular preference among respondents, while quyi was the least listened-to genre. Additionally, listening to music across 5 different genres appeared as a significant parameter indirectly linked to mental health through perceived social connectedness. Specifically, engaging with quyi was associated with higher levels of perceived social connectedness and sense of security, which in turn correlated with improved mental well-being. Conversely, individuals listening to jazz reported lower social connectedness and sense of security, which was subsequently linked to increased mental health problems. The potential reasons for these findings and implications are discussed.

Conclusions

This study significantly contributes to the understanding of the mechanisms behind music-listening preferences in stressful environments. Specifically, our findings highlight the mediating roles of perceived social connectedness and sense of security in the relationship between music preferences and mental health outcomes during the quarantine period. These insights provide valuable guidance for developing interventions that use music to enhance mental health, thereby broadening the scope of studies on environmental stimuli and their impact on mental well-being.
VIABILITY OF BHK-21 FIBROBLAST CELLS TOWARD ACRYLIC DENTURE BASES AFTER REINFORCED BY NATURAL FIBERS
Authors: Prawesthi Endang , Tetelepta Marzia Magdalena , Heldayani Heldayani , Kastian Ria Fajarwati , Septisetyani Endah Puji
Published: December 2024

The use of acrylic denture bases in the oral cavity requires biocompatibility. This study investigated the viability of BHK-21 fibroblast cells after treatment with an acrylic denture base modified using natural fibers. Ramie and banana stem fibers were used as cost-effective alternatives to synthetic fibers. The study involved 42 acrylic resin specimens (10 mm diameter, 2 mm thickness) divided into groups: resin without fibers, 0.5%, 1.5%, and 2.5% ramie fibers, and 0.5%, 1.5%, and 2.5% banana stem fibers. The resin was incubated with cell culture media at 37°C for 7 days. Cytotoxicity testing using the MTT method revealed that all treatment groups had cell viability exceeding 70%, meeting ISO 10993-5 standards. No significant differences in cell viability were observed between the treatment groups and the control (media without specimens). Additionally, adding 0.5%, 1.5%, and 2.5% ramie fibers did not affect BHK-21 cell viability compared to the resin-only control, while adding banana stem fibers increased cell viability compared to the control (P = 0.035; P = 0.021; and P = 0.011). In conclusion, increasing the concentration of natural fibers in acrylic denture bases did not negatively impact fibroblast cell growth.
MASTER RECESSION CURVE VISUALIZATION USING SEVEN BASEFLOW RECESSION MODELS IN PAIRED WATERSHEDS
Authors: Latuamury Bokiraiya , Mardiatmoko Gun , Kastanya Agustinus
Published: December 2024

River flow recession analysis plays a crucial role in understanding how watersheds release water during dry periods. Consequently, modeling baseflow recession is closely related to the characteristics of unconfined aquifers, storage behavior, and the discharge properties of the watershed. While several theories exist on modeling recession curves, limited research has compared different approaches regarding baseflow recession characteristics. This study aims to model seven baseflow recession equations in paired watersheds in Ambon City. The research methodology involves calibrating seven baseflow recession models using the Recession Curve (RC) 4.0 Hydro Office software. The tested models include Linear Reservoir, Exponential Reservoir, Double Exponential Horton, Dupuit-Boussinesq Aquifer Storage, Depression Storage, Turbulent Flow Model, and Hyperbolic Function Model. The calibration results yield optimal combinations of recession parameters. The parameterization order from highest to lowest is as follows: Depression Storage, followed by the Hyperbolic Function, Exponential Reservoir, Turbulent Flow Model, Double Exponential Horton, Linear Reservoir, and Dupuit-Boussinesq Aquifer Storage. Quantifying baseflow recession constants and coefficients is essential for understanding baseflow behavior. Visualizing the slope of the Recession Curve (MRC) reveals that models with high recession constants tend to have gradual MRCs, while low recession constants result in steep MRCs. The MRC slope further describes the relationship between storage conditions and discharge from the watershed. The advantage of creating MRCs from discontinuous recession segments lies in their ability to appropriately describe the MRC process and provide quantitative parameters relevant to drainage mechanisms. MRCs also serve as an optimal automated computational tool.
FACILITY LAYOUT IMPROVEMENT FOR CONTINUOUS PRODUCTION SYSTEM: A CASE STUDY IN CHOCOLATE-BASED PRODUCT
Authors: Saifurrahman Anas , Fath Hamzah , Baasith Darywan Damar , Aini Yumna Nur , Wibisono Arif , Asmara Sang Norma Lintang
Published: December 2024

This study explores optimizing Yogyakarta's chocolate production system facility layout to enhance laboratory-scale production to mass production at the UGM Field Research Center laboratory. The laboratory layout was optimized based on expert assessments and the ALDEP algorithm and compared with the current layout using distance-based objective values. Both layouts were compared to highlight the importance of qualitative aspects in determining workstation positions, in addition to quantitative aspects. The distance-based analysis results indicate that the ALDEP layout outperforms the current layout, and the layout was designed with expert assessments, showing the highest efficiency and lowest material handling costs, with an estimated improvement of 23% over the current layout. Although the proposed expert-assessed layout performed worse, it met stakeholder requirements such as safety and ease of observation. Therefore, future research must consider other aspects beyond costs in evaluation metrics to determine the best layout. Although the proposed expert-assessed layout performed worse, it met stakeholder requirements such as safety and ease of observation. Therefore, future research must consider other aspects beyond costs in evaluation metrics to determine the best layout.
The Ideal Educator According to Abd Al-Salām Yāsīn in Forming The Character of Contemporary Students
Authors: Fariq Wan Muhammad , Zakaria Gamal Abdul Nasir
Published: December 2024

Educators are an essential element in the world of education. To become a successful educator, appropriate strategies are needed to convey learning appropriately. A significant figure from Morocco named Abd al-Salām Yāsīn (1928-2012) compiled notes in his book "Muzakkarāt fi Al-Tarbiyyah li Madāris al-Mu'allimīn wa Al-Mu'allimāt about education in 1963. This paper tries to look at the from the book about the ideal educator according to Abd al-Salām Yāsīn. The type of research used is qualitative research (non-interactive) with content analysis techniques. The researcher found that there are 8 (eight) ideal educator concepts according to Abd al-Salām Yāsīn. Among them: (1) creative; (2) perfect physique; (3) simple and attractive appearance; (4) have intelligence; (5) have the character of compassion, emotional intelligence and empathy; (6) is fair; (7) sensitive; and (8) authoritative. All of his ideas are still relevant to the world of education today.
THE ROLE OF LAND DEED MAKING OFFICIALS IN LEGAL SETTLEMENT OF COMPLETE SYSTEM LAND REGISTRATION CERTIFICATES THAT OVERLAP IN SALE AND PURCHASE TRANSACTIONS IN TABANAN REGENCY
Authors: Mahayu Nyoman
Published: December 2024

Registration of Complete Systematic Land (PTSL) is the process of registering land for the first time This Complete Systematic Land Registration is one of the government programs due to the large number of uncertified land However, Complete Systematic Land Registration still encounters many problems in the field such as overlapping certificates Overlapping certificates can hinder the process of transferring rights such as hindering the registration of the transfer of land rights carried out by a Land Deed Official (PPAT) This research uses theory of legal certainty, the theory of legal protection and the theory of usefulness with empirical legal research. The legal consequence if the certificate of sale and purchase object overlaps is that the certificate cannot be used as valid proof of ownership of a piece of land In the case discussed here, the certificate issued in recent years must be cancelled first by submitting a request for cancellation of the certificate, then the certificate issued earlier will be processed for division according to the area of each ownership certificate (SHM) of the cancelled PTSL and processed to be in the name of each party. The role of PPAT in resolving overlapping land ownership certificates is by calling the parties whose certificates overlap, asking for the chronological origin of the rights application so that a duplicate certificate can be issued, and conveying it to the local Land Office to provide a solution to the problem of overlapping certificates.
ŞARKI İLE ÖĞRETİM YÖNTEMİNİN ORTAOKUL FEN BİLİMLERİ DERSİ ÜZERİNDEKİ ETKİSİ
Authors: Üstün Ayşenur , Aydoğan Salih
Published: December 2024

Bu çalışma, beşinci sınıf Fen Bilimleri dersinde yürütülen “vitaminler” adlı konunun “rap ile öğretim” ine yönelik deneysel bir araştırmadır. Çalışma Ankara İl Milli Eğitim Müdürlüğüne bağlı Keçiören Hun Ortaokulu beşinci sınıf öğrencileri ile yürütülmüştür. Araştırmanın çalışma grubu, deney grubunda 45, kontrol grubunda 49 toplam 94 beşinci sınıf öğrencisinden oluşmaktadır. Araştırmada öntest-sontest kontrol gruplu deneysel desen kullanılmıştır. Vitaminler konusu, kontrol grubundaki öğrencilere geleneksel öğretim yoluyla, deney grubundaki öğrencilere ise rap ile öğretim yoluyla uygulanmıştır. Verilerin analiz edilmesinde SPSS istatistik paket programından yararlanılmıştır. Çalışmada deney ve kontrol grubundan alınan öntest ve sontest ölçümleri için betimsel istatistikler, deney ve kontrol gruplarının puanları arasındaki farkın anlamlılığının test edilmesi için t-testi kullanılmıştır. Araştırma sonunda yapılan ölçümlerde, beşinci sınıf öğrencilerinin başlangıç düzeyleri aynı olmasına karşılık deney grubu öğrencilerinin kontrol grubundaki öğrencilere göre başarılarının daha yüksek olduğu sonucuna ulaşılmıştır.
Las esculturas ligeras realizadas en papelón, esas grandes desconocidas. Desde el siglo XV en la Corona de Aragón, Valencia, España.
Authors:   Institut valencià de Conservació, Restauració i Investigació. IVCR+i, Generalitat Valenciana, Román Garrido Rosenda María
Published: December 2024

Mediante un proyecto de intervención en la imagen de la Virgen de los Desamparados del S. XV, en la Basílica de la Virgen de los Desamparados, Valencia; se pudo investigar esta tipología tan poco conocida por el público, como son las esculturas ligeras.

Apoyándonos en estudios científicos, nos dieron un conocimiento de la obra, tanto estructural como materialmente.

Con estas premisas, se comenzó un proyecto de investigación, buscando su origen y posibles causas de la anticipación en Valencia, con respeto el resto de la península. Concluyendo con la realización de una escultura de papelón, como hipotéticamente se elaboraría en el siglo XV.
Visiones y mortificaciones como mecanismos de control en un monasterio del siglo XVIII: las monjas visionarias de Malagón
Authors:   Universitat de les Illes Balears-IEHM, García Pérez Francisco josé
Published: December 2024

Les visions místiques i experiències sobrenaturals que deien sofrir nombroses monges no sempre eren certes. De fet, a vegades es convertien en mecanismes útils per a obtenir beneficis. Aquest article pretén estudiar un cas concret de falses visionàries en el monestir de carmelites descalces de Malagón, que van ser processades pel tribunal inquisitorial de Toledo. Es tracta de tres monges que utilitzaren les visions místiques i l'ús d'exercicis mortificadors com a mitjans per a obtenir influència, poder i altres ambicions dins del monestir.
VII Seminari d'Estudis Medievals. «Ciutat és congregació concordant de moltes persones». La ciutat medieval i les seves gents
Authors:   Universitat de les Illes Balears, Juan Vicens Antònia , Cerdà Garriga Magdalena
Published: December 2024

Biografia de l'autor/a
Magdalena Cerdà Garriga, Universitat de les Illes Balears
Llicenciada en Història de l'Art (2004), en Història (2009) i Màster en patrimoni cultural: investigació i gestió (2012) per la Universitat de les Illes Balears. Doctora europea en Història de l'Art per la Universitat de les Illes Balears (2016) amb la tesi La imatgeria medieval mallorquina (1229-1520). Professora contractada doctora interina del Departament de Ciències Històriques i Teoria de les Arts de la Universitat de les Illes Balears i membre del grup de recerca Estudis Medievals (GRESMED). Les seves línies de recerca se centren en l'estudi de l'escultura i la imatgeria medieval mallorquina i el col·lectiu dels imaginaires i els fusters durant la baixa edat mitjana. Ha realitzat estades de recerca a: Centre d'études medievales de Montpellier, Centre d'études supérieures de civilisation médiévale (Université de Poitiers - CNRS) i Universitat de Barcelona. Actualment, participa en el projecte d'investigació La casa medieval. Materiales para su estudio en Mallorca (HAR2016-77032-P) finançat pel Ministerio de Economía y Competitividad.
Jornades d'Història contemporània 2019
Authors:   Universitat de les Illes Balears, Ripoll Gill Elisabeth
Published: December 2024

Biografia de l'autor/a
Elisabeth Ripoll Gil, Universitat de les Illes Balears
Doctora en Història (UIB, 2017). Professora ajudant d'Història contemporània en el Departament de Ciències Històriques i Teoria de les Arts. Membre del Grup d'estudis de la Cultura, la Societat i la Política al món contemporani (UIB) i del grup Estudis de la Cultura, la Societat, la Comunicació i el Pensament contemporani (Institut de Recerca i Innovació Educativa - UIB). La línia principal de recerca són els moviments migratoris i la seva vessant política i associativa.
Plets i concòrdies entre la Universitat d'Eivissa i alguns mercaders de la sal al segle XVII
Authors:   Universitat de les Illes Balears, Tur Torres Antoni
Published: December 2024

Resum
La documentació que presentam ens introdueix a algunes facetes encara poc estudiades del comerç de la sal d'Eivissa. Entre d'altres, qui eren els particulars i companyies implicades en aquesta activitat; el paper de la Universitat, o municipi illenc, en el comerç; la gestió dels deutes de la Universitat i el seu pagament en sal; els conflictes generats per aquestes pràctiques, així com les vies de resolució d'aquests conflictes i el paper del governador de l'illa com a àrbitre.