bluuebunny/crossref_metadata_2025_split huggingface dataset:
Harnessing Exploratory Data Analysis for Robust Financial Fraud Detection and Model Enhancement
Authors: Lokanan Mark 
Published: December 2024

Abstract

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.
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

ABSTRACT

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

ABSTRACT
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.
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

Abstract

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.
Spāņu valodas dzimtes kategorija etnolingvistiskā un sociolingvistiskā aspektā
Authors: Placinska Alla 
Published: December 2024

Pētījuma mērķis ir aplūkot dzimtes kategorijas izveidi un attīstību spāņu valodā, tās definīciju un lietojumu, kā arī kultūrvēsturiskos apstākļus, kuri ietekmējuši šos procesus. Interese par dzimtes kategoriju saistīta ar sociolingvistisko polemiku mūsdienu Spānijā, medijos un valodnieku vidū par rekomendācijām iekļaujošās valodas lietojumam. To izstrādē piedalījušies gan valodnieki, gan sabiedriskās un politiskās institūcijas. Spāņu valodā ir divas dzimtes – sieviešu un vīriešu. Nepastāv nekatra dzimte, bet ir kopdzimtes vārdi. Feminisma pārstāvji uzskata, ka valoda ir diskriminējoša attiecībā pret sievieti, jo vīriešu dzimtes formas tiek izmantotas, apzīmējot ne tikai vīriešu dzimtes vārdus, bet arī bioloģiski nemarķētos vārdus, kas attiecas uz cilvēku kopumu. Iekļaujošās valodas aizstāvji pieprasa atteikties no nemarķētās dzimtes lietojuma, aizstājot to ar citām formām. Viens no radikālākajiem uzskatiem saistīts ar trešās dzimtes ieviešanu valodā. To piedāvā veidot ar galotni -e (-es daudzskaitļa formā) un atvasināt no vārdiem ar jau pastāvošām divām dzimtes formām, piem.: maestro, maestra, maestre. Terminoloģijas līmenī interesi piesaista binoms sexo/género ‘dzimums/dzimte’ (angl. sex/gender) un šo terminu lietojums valodā. Pētījumā secināts, ka valoda nav diskriminējoša un tajā ir gramatiskās formas dzimumneitralitātes apzīmējumam. Apgalvojums, ka vīriešu dominance sabiedrībā nosaka to dominējošo lomu valodā, nav zinātniski pierādīts. Sievietes diskriminācija ir viena no sabiedrības problēmām, kas atspoguļojas arī valodā, pārsvarā leksikā. Vairāku iestāžu un valodnieku izstrādātās vadlīnijas iekļaujošās valodas ieviešanai nav guvušas Spānijas Karaliskās akadēmijas atbalstu un tiek raksturotas kā centieni radīt mākslīgo diskursu.
ANALISIS PENDAPATAN NELAYAN JARING INSANG PERMUKAAN (SURFACE GILLNET) DI DESA KOTO PETAI PERAIRAN DANAU KERINCI KABUPATEN KERINCI
Authors: Pratama Padli Yuda , Syarifuddin Hutwan , Darmawi Darlim 
Published: December 2024

Penelitian ini bertujuan untuk mengetahui pendapatan nelayan pada alat tangkap jaring insang permukaan (Surface gillnet) di Desa Koto Petai Kecamatan Tanah Cogok Kabupaten Kerinci. Metode yang digunakan dalam penelitian ini adalah metode survey yaitu dengan pengamatan langsung dilapangan serta melakukan wawancara kepada Nelayan. Penentuan jumlah responden dalam penelitian ini secara acak terhadap nelayan yang menggunakan jaring insang permukaan. Jumlah keseluruhan nelayan yang menggunakan jaring insang permukaan di Desa Koto Petai adalah sebanyak 134 orang nelayan dan penarikan sampel 20% sehingga jumlah responden diperoleh sebesar 21 orang, didapatkan dengan menggunakan rumus slovin karena dalam suatu penarikan sampel, jumlah harus respresentative agar hasil dalam penelitian dapat digeneralisasikan. Alat tangkap yang digunakan adalah jaring insang dengan ukuran 2,0 – 3,0 inch dan pengoperasian penangkapan tergolong sederhana. Dari hasil penelitian dapat disimpulkan bahwa rata-rata biaya produksi yaitu biaya variabel Rp.124.000, biaya tetap Rp.4.721. Penerimaan nelayan jaring insang adalah Rp.300.000/hari/org dan Pendapatan Rp.171.279/hari/org. Pengalaman melaut dan biaya produksi berpengaruh nyata terhadap variabel pendapatan, sedangkan variabel umur,tingkat pendidikan tidak berpengaruh nyata secara parsial terhadap variabel pendapatan. Nilai B/C ratio usaha penangkapan dengan alat tangkap jaring insang yaitu 1,33 menunjukan usaha penangkapan layak dijalankan karena memperoleh B/C R > 1.
Kata Kunci: Alat tangkap, jaring insang, rasio usaha
Antropología Visual
Authors: Arnache Ovalle Jaime Alberto 
Published: December 2024

El corregimiento el Llanito se encuentra en el municipio de Barrancabermeja,Santander. Este corregimiento con una tradición artesanal, llena de mitos y leyendas, gracias a que esta bañada por la ciénaga que lleva su mismo nombre. Es un lugar pequeño donde se encuentran sus habitantes, y donde su gran extensión de ciénaga y humedales la hace rica en biodiversidad, sumado a su pesca y gastronomía que la hacen exquisitas para los turistas, sin olvidar que su gente cálida y bella le dan el valor agregado a este lugar.
¿Cómo es geográficamente el Nuevo Mundo y quienes lo habitan?
Authors: Camacho Ortiz Natalia 
Published: December 2024

Es el año 1520, vengo de mi natal España en función de servir a los reyes católicos de Granada, estoy de paso por este llamado “Nuevo Mundo” que he descubierto que no es más que el infierno en vida, dios me salve de todo lo que mis ojos han visto, mis oídos escuchado y mi boca pronunciado.
El arte contemporáneo y su conservación
Authors: Guzmán Robert Danilo 
Published: December 2024

Cuando se busca entender la importancia de conservar el patrimonio cultural, podemos observar que la noción de significado y apropiación por parte de los habitantes del territorio emergen como elementos primordiales en la intención por preservar lo que se puede considerar valioso. Cabe recordar que esta preservación se da en el valor, significado y arraigo que el contexto inmediato conformado por las entidades territoriales y comunidad, las cuales promueven la apropiación ciudadana (Ministerio de Cultura Colombia, 2015). Esta serie de manifestaciones con las cuales la sociedad se siente identificada a través de una realización artística revela sus valores y relatos ancestrales (Molano, 2018), los cuales se van evidenciando con el paso del tiempo encontrando así un soporte intangible basado en la memoria, la cual va fluyendo con el pasar del tiempo.
Entre el Olvido y la Memoria: Tenerife
Authors: Soto Braulio 
Published: December 2024

En Tenerife, Valle del Cauca, el conflicto armado generó cambios importantes en una población dedicada puntualmente a la agricultura, no por nada llegó a ser conocida como la despensa del Valle del Cauca. Esta situación desembocó en enfrentamientos, extorsiones, desapariciones y muertes, lo que propició el desplazamiento, muerte y olvido social-estatal.
Effect of Community-Based Integrated Care for Patients With Diabetes and Depression (CIC-PDD) in China: A Pragmatic Cluster-Randomized Trial
Authors: Wang Yanshang , Guo Dan , Xia Yiqi , Hu Mingzheng , Wang Ming , Yu Qianqian , Li Zhansheng , Zhang Xiaoyi , Ding Ruoxi , Zhao Miaomiao , Shi Zhenyu , Zhu Dawei , He Ping 
Published: December 2024

OBJECTIVE
To develop a care model for patients with both diabetes and depression and assess the model’s effectiveness.

RESEARCH DESIGN AND METHODS
In this pragmatic cluster randomized trial, we allocated eight community health centers into two groups: the enhanced usual care group and the intervention group. A comprehensive care plan was developed for the intervention group based on the integrated care model. We recruited individuals aged ≥18 years with type 2 diabetes and depression (Patient Health Questionnaire-9 score ≥10). The primary outcome was the between-group difference in the percentage of patients who had at least a 50% reduction in depressive symptoms and a reduction of at least 0.5 percentage points in HbA1c. The outcome analysis was conducted within the intention-to-treat population; missing data were multiply imputed.

RESULTS
We enrolled 630 participants, with 275 in the intervention group and 355 in the control group. A significantly greater percentage of patients in the intervention group met the primary outcome at 12 months (for depressive symptoms: risk difference [RD] 31.03% [62.06% vs. 31.02%, respectively; 95% CI 21.85–40.21]; for HbA1c: RD 19.16% [32.41% vs. 13.25%, respectively; 95% CI 11.35–26.97]). The patients in the intervention group showed significant enhancements in mental quality of life (mean difference [MD] 6.74 [46.57 vs. 39.83, respectively; 95% CI 3.75–9.74]), diabetes self-care activities (MD 0.69 [3.46 vs. 2.78, respectively; 95% CI 0.52–0.86]), medication adherence (MD 0.72 [6.49 vs. 5.78, respectively; 95% CI 0.37–1.07]), and experience of care (MD 0.89 [3.84 vs. 2.95, respectively; 95% CI 0.65–1.12]) at 12 months. Rural participants benefited more from the intervention.

CONCLUSIONS
The implementation strategy can serve as a valuable blueprint for the identification and treatment of patients with physical and mental multimorbidity in primary health care settings.