bluuebunny/crossref_metadata_2025_split huggingface dataset:
USO DE LA MATRIZ DE PERFIL COMPETITIVO (MPC) EN LA VALORACIÓN DE AGRUPACIONES Y EQUIPOS DEPORTIVOS
Authors: Hidalgo Reyes Pedro , Zayas Martínez Magalys , Pavón Figueredo Manuel de Atocha 
Published: January 2025

La matriz de perfil competitivo (MPC) es una herramienta estratégica que permite comparar y valorar organizaciones y empresas. En el presente artículo se empleó esta técnica para valorar agrupaciones deportivas de categorías pioneriles y escolares, en el combinado deportivo “Jesús Menéndez”, del municipio Bayamo, en Granma, Cuba. Los deportes objeto de estudio fueron: béisbol, béisbol 5, voleibol de sala, voleibol de playa y bádminton. Para ese fin, se seleccionaron como factores clave de éxito: la cantidad y calidad de la matrícula deportiva y fuerza técnica, así como el número y calidad de las instalaciones y recursos para la práctica. Se emplearon además, como método teórico el Analítico-sintético, para el procesamiento y valoración los fundamentos teóricos; entre empíricos, el análisis de documentos y la observación, fundamentalmente. También resultaron válidas las técnicas: tormenta de ideas, reducción de listados y comparaciones apareadas, en la selección de los factores clave de éxito y en la puntuación otorgada a cada equipo estudiado. Los resultados de la valoración precisa de cada deporte, a través de la identificación aspectos fuertes y débiles en áreas básicas, posibilitó a directivos y entrenadores elaborar opciones estratégicas y acciones más pertinentes
Arsenic contamination of natural waters, soils and food products in Georgia
Authors: Shavliashvili L. , Kuchava G. , Tabatadze Mariam , Shubladze E. , Buachidze N. 
Published: January 2025

Arsenic contamination of natural waters, soils, and food products in Georgia is discussed in this paper. Samples of rivers and artesian waters, as well as suspended solids and bottom sediments, were taken and analysed. Soil samples were selected from polluted, agricultural, recreational and background sites. Arsenic content was determined in water and soil samples, as well as in food products. Furthermore, the hydrochemical and microbiological characterisation of rivers (Lukhuni and Tskhenistskali), artesian and spring waters in the vicinity of arsenic processing enterprises of Racha-Lechkhumi and Kvemo Svaneti region were conducted. Analyses were carried out using modern methods and equipment that meet and correspond to international standards. Based on the received data, a map of arsenic contamination of the soils of the Racha-Lechkhumi and Kvemo Svaneti regions was compiled in the GIS system. This review is undertaken to give an overview of the latest findings on the issue of soil, water and food products. The most vulnerable points of soil arsenic contamination have been identified in the areas adjacent to arsenic factories in the research region, From the agricultural fields to the villages of Abari and Likheti, where phytoremediation was carried out.
Avances recientes en inversores multifuncionales en sistemas fotovoltaicos
Authors: Caicedo-Peñaranda Edison Andres , Pardo-García Aldo , Mantilla-Villalobos María Alejandra , Pabón-Fernández Luis David 
Published: January 2025

Los inversores pueden ser considerados una tecnología en desarrollo, en la cual, durante cerca de cinco décadas, se han presentado avances significativos que han creado líneas de investigación enfocadas en topologías, métodos de control, optimización y modelado, entre otros tópicos. El presente artículo revisa contribuciones recientes enfocadas en el inversores con características multifuncionales para sistemas fotovoltaicos, proporcionando a los lectores una revisión sintetizada como herramienta de conocimiento para afrontar los desafíos de la integración de los inversores y el perfeccionamiento del sistema eléctrico en términos de calidad de la energía.
Correlation of β-adrenergic reactivity of erythrocyte membranes with clinical characteristics of patients with coronary artery disease and HF with preserved and reduced ejection fraction
Authors: Muslimova E. F. , Korepanov V. A. , Rebrova T. Yu. , Andreev S. L. , Afanasiev S. A. 
Published: January 2025

Aim. To evaluate β-adrenergic reactivity of erythrocyte membranes (β-ARM) depending on clinical parameters in patients with heart failure (HF) with preserved and reduced ejection fraction (EF), who had prior myocardial infarction.Material and methods. The sample included 89 patients with HF and past myocardial infarction. Preserved EF (HFpEF) group included 64 (71,9%) patients, while reduced ejection fraction (HFrEF) — 25 (28,1%) patients. All patients underwent β-ARM assessment using an inhibition of hemolysis in a hypoosmotic medium with β-blocker.Results. The groups with HFpEF and HFrEF were comparable in β-ARM values. There was no linear relationship between β-ARM and LVEF. In the HFpEF group, following differences in β-ARM were revealed depending on the HF functional class (p=0,049): 42,5 (24,1; 61,9) CU in class I, 25,9 (17,1; 36,9) CU in class II, 22,2 (14,9; 27,3) CU in class III. This was not observed in the HFrEF group (p=0,143). In HFpEF, patients with LV hypertrophy had (p=0,049) higher β-ARM values than patients without it (36,9 (24,2; 58,6) CU vs 23,3 (16,0; 29,8) CU). At the same time, in HFrEF, β-ARM was the same (p=0,364) in patients with and without LV hypertrophy. In the HFpEF group, patients taking angiotensin-converting enzyme inhibitors/angiotensin receptor blockers at admission had 2-fold lower β-ARM (p=0,035) than patients who did not take it.Conclusion. In the sample with past myocardial infarction, patients with HF with preserved and low EF had comparable β-ARM. At the same time, individuals with HFpEF and LV hypertrophy differed from patients without hypertrophy in increased β-ARM, i.e., higher sympathoadrenal system intensity and reduced adrenergic reactivity, which was not observed in the HFrEF group. In the HFrEF group, taking angiotensin-converting enzyme inhibitors/angiotensin receptor blockers was associated with more favorable indicators of adrenergic reactivity.
Prognostic value of no-reflow phenomenon in myocardial infarction: the role of the severity of ischemic damage
Authors: Frolov A. A. , Kashtanov M. G. , Korotkikh A. V. , Pochinka I. G. , Frolov I. A. , Kuzmichev K. V. , Mukhin A. S. , Sharabrin E. G. 
Published: January 2025

Aim. To create a scale for assessing the myocardial ischemia severity and to study the effect of concomitant ischemia on the prognosis of myocardial infarction (MI) complicated by no-reflow phenomenon during percutaneous coronary intervention (PCI).Material and methods. A single-center cohort study was conducted. There were following inclusion criteria: MI, PCI, total ischemic time <48 h and no-reflow (TIMI flow grade <3 or Myocardial blush grade <2 or ST segment resolution <70%). The proposed scale included infarction-related lesion in the left main coronary artery or proximal left anterior descending artery — 2 points; total ischemic time >12 h — 1 point; TIMI flow grade 0-1 before PCI — 1 point; Rentrop collateral circulation grade 0-1 — 1 point. Severe ischemia — more than 3 points. Propensity score matching was used to correct differences between the groups. Median follow-up was 979 [743; 1318] days.Results. A total of 18079 patients with acute coronary syndrome were analyzed, while 219 were included. After comparison, 105 patients remained as follows: group 1 — 75 patients without assessed severe ischemia; group 2 — 30 patients with assessed severe ischemia. During the hospital stage, 6 (8,0%) and 9 (30,0%) patients died, respectively, p<0,001. The left ventricular ejection fraction was 47 [42; 50]% and 41 [39; 45]%, respectively, p<0,001. Severe ischemia was associated with a 4,15-fold increase in the long-term death risk (95% confidence interval 1,87-9,20; p<0,001).Conclusion. Concomitant severe ischemic damage in MI complicated by no-reflow during PCI is associated with worse left ventricular function and a higher death risk at the hospital stage and in the long-term follow-up period.
MANAJEMEN SEKOLAH RAMAH ANAK PADA SEKOLAH BERBASIS KEAGAMAAN
Authors: Nabila Sadilla Salma , Burhanuddin Burhanuddin , Arifin Imron 
Published: January 2025

Abstract: This study aims to describe child-friendly school management where the main focus is fulfilling student's rights as a learner and individual. This study used a qualitative approach with a case study design. This research was conducted at Insan Amanah Primary School Malang. Collecting research data using interview, observation, and study documentation techniques. Analysis of research data started from data collection, data reduction, data presentation, and data verification. The result of this study are: (1) the background of the child-friendly school implementation at Insan Amanah Primary School Malang, (2) the process of planning, organizing, implementing, and evaluating child-friendly school at Insan Amanah Primary School Malang, (3) obstacles in child-friendly school management at Insan Amanah Primary School Malang, (4) school efforts in overcoming child-friendly school management constraints at Insan Amanah Primary School Malang, (5) parents' responses to child-friendly school management and its impact on the quality of children's education at Insan Amanah Primary School Malang.
PENGEMBANGAN MEDIA PEMBELAJARAN APLIKASI FRACMATH BERBASIS ANDROID PADA MATERI PECAHAN KELAS V SEKOLAH DASAR
Authors: Novita Putri Puput Intan , Nuraini Ni Luh Sakinah , Mas’ula Siti 
Published: January 2025

Abstrak : Media pembelajaran merupakan salah satu alat yang memiliki peran penting yang dapat membantu seorang guru dalam proses pembelajaran berlangsung. Tujuan dilakukan penelitian ini adalah mengembangkan sebuah media pembelajaran matematika aplikasi fracmath beberbasis android yang valid menurut ahli materi dan ahli media, serta praktis menurut guru dan siswa kelas V SD Negeri 3 Sambigede. Metode yang digunakan dalam penelitian ini adalah metode R&D (Research and Development). Penelitian ini juga menggunakan teknik pengumpulan data yang meliputi observasi, wawancara, angket, dan dokumentasi. Analisis data yang digunakan yaitu kuantitatif dan kualitatif. Hasil pengembangan penelitian media ini dinyatakan valid menurut ahli media yang memperoleh nilai persentase 91,66 percent, valid menurut ahli materi yang memperoleh nilai persentase 81,41 percent, serta dinyatakan praktis menurut pengguna yang memperoleh nilai persentase 100 percent menurut guru dan memperoleh nilai persentase 91,14 percent menurut siswa.
STUDI LITERATUR: PENERAPAN KONSELING KONTRAK PERILAKU (BEHAVIOR CONTRACT) PADA SISWA SEKOLAH MENENGAH
Authors: Prakarsari Ludia Tulus 
Published: January 2025

Konseling kontrak perilaku merupakan sebuah teknik yang digunakan dalam konseling untuk mengubah perilaku siswa dengan melibatkan kesepakatan antara konselor dan konseli. Dengan melihat hasil tinjauan dari berbagai literatur, studi ini menyajikan pengertian, ruang lingkup, prosedur penerapan, serta keberhasilan penerapan konseling kontrak perilaku pada siswa di lingkungan sekolah menengah. Temuan dari studi ini memberikan wawasan tentang pentingnya pendekatan ini dalam membantu siswa mengatasi permasalahan perilaku dan mencapai potensi penuh mereka dalam pembelajaran dan pengembangan pribadi. Metode penelitian yang dilakukan memakai kualitatif dengan desain penelitian Systematic Literature Review (SLR). Pada penelitian ini, menggunakan literatur dari jurnal-jurnal yang diterbitkan antara tahun 2019-2024. Keberhasilan penerapan teknik ini terbukti dari penurunan perilaku negatif siswa dan peningkatan kondisi positif, serta peningkatan tanggung jawab siswa terhadap perilaku mereka sendiri. Meskipun belum ada penelitian yang menunjukkan lamanya efek intervensi, konseling kontrak perilaku membuka peluang bagi perubahan positif dalam perilaku siswa di lingkungan sekolah.
IMPLEMENTASI MEDIA PEMBELAJARAN BERBASIS PERMAINAN MONOPOLI PADA MATERI SUHU DAN KALOR UNTUK MENINGKATKAN MOTIVASI BELAJAR SISWA SMPN 8 MALANG
Authors: Rohali Amelia , Sandi Ferryan , Nisa Herta Muflihatin , Resdiana Puput Dwi , Mubarok Rikza Islahi , Ghina Sofya Farah , Ghina Parno , Al Fatih Solihin 
Published: January 2025

Guru memiliki peran penting dalam menciptakan lingkungan pembelajaran yang mendorong siswa untuk berkembang secara holistik. Dalam konteks pembelajaran Ilmu Pengetahuan Alam (IPA) di SMPN 8 Malang, beberapa tantangan dihadapi, seperti ketidakminatan siswa terhadap mata pelajaran tersebut akibat metode dan media pembelajaran yang monoton, serta lingkungan belajar yang tidak mendukung. Untuk mengatasi hal ini, strategi pembelajaran inovatif perlu diterapkan. Salah satu strategi inovatif yang dapat digunakan adalah penggunaan media pembelajaran berbasis permainan, seperti Monopoli. Monopoli dalam pembelajaran IPA, diharapkan siswa dapat lebih aktif, fokus, dan meningkatkan kemampuan mereka dalam memahami materi IPA, khususnya pada topik Suhu dan Kalor. Metode yang digunakan dalam penelitian ini yaitu R&D dimana penelitian dan pengembangan ini merupakan metode yang berfokus untuk menghasilkan suatu produk tertentu serta pengujian tingkat efektifitas terhadap produk yang dihasilkan. Penelitian ini menggunakan 5 tahapan pengembangan dengan design thinking meliputi empathize, define, ideate, prototype, dan test. Data kualitatif diperoleh dari hasil observasi dan wawancara terkait motivasi belajar siswa secara langsung serta umpan balik terkait media pembelajaran yang dibuat tabel .Data kuantitatif yang diperoleh menggunakan skala likert kemudian diolah sehingga berbentuk presentase dan kualitatif untuk mendeskripsikan motivasi belajar yang dimiliki oleh siswa. Berdasarkan hasil penelitian yang telah dilakukan menunjukkan bahwa penggunaan media pembelajaran monopoli dalam proses belajar mengajar siswa kelas VII SMPN 8 Malang memiliki dampak signifikan terhadap peningkatan motivasi belajar siswa pada materi suhu dan kalor. Penting bagi guru untuk memilih dan menggunakan media pembelajaran yang sesuai. Hal ini berguna untuk meningkatkan efektivitas pembelajaran dan mencapai tujuan pembelajaran secara lebih efisien.
ANALISIS PEMBELAJARAN BERBASIS PENDEKATAN CRT DI SDN PANDANWANGI 03
Authors: Surayanah  , Fitriah Lailatul , Lumban Gaol Maytha Esterya , Resti Cahyanti Nadilla , Yamalia Nursila , Maharani Nisa , Tri Iriani Irma 
Published: January 2025

Pendekatan Culturally Responsive Teaching (CRT) telah menjadi fokus utama dalam literatur pendidikan untuk meningkatkan kualitas pengajaran yang menghargai keanekaragaman budaya peserta didik. Penelitian ini bertujuan untuk menganalisis penerapan CRT dalam pembelajaran di kelas 2 SDN Pandanwangi 3 Malang. Penelitian ini berupa kualitatif deskriptif, menggunakan metode observasi dan wawancara. Hasil wawancara dengan guru di kelas 2B menunjukkan bahwa peserta didik tertarik dengan tarian tradisional Bantengan, yang berasal dari daerah asal Malang. Selain itu, hasil observasi menunjukkan bahwa peserta didik lebih terlibat dalam kegiatan pembelajaran yang menggunakan pendekatan budaya responsif (CRT). Pelajar aktif bertanya dan menjawab pertanyaan guru. Selain itu, pendekatan pembelajaran Culturally Responsive (CRT) dianggap berhasil apabila peserta didik dapat membangun rasa saling menghormati terhadap keragaman budaya, baik yang dimiliki oleh orang lain maupun diri mereka sendiri. Adapun hasil wawancara dengan guru kelas 2C menunjukkan bahwa guru masih belum memiliki pemahaman yang mendalam tentang pendekatan pembelajaran budaya responsif. Guru juga menjelaskan bahwa belum memberikan perhatian yang cukup pada penerapan pendekatan ini. Menurut data yang dikumpulkan dari observasi yang dilakukan di kelas 2C selama kegiatan pembelajaran yang dilakukan dengan pendekatan CRT, peserta didik menunjukkan minat dan antusiasme untuk belajar. Ini terjadi ketika peserta didik belajar tentang keberagaman di sekolah.
Assessing the effectiveness of vaccination strategies against respiratory pathogens⁠
Authors: Abdullah Marwah Y. , Alanazi Faisal M. , Gandurah Saad F. , Altufayif Dhiyaa A. , Alghamdi Abdulrahman M. , Halawani Olfa A. , Almudarhem Fatimah F. , Al-Otaibe Raghad I. , Allathiqani Osama M. , Alasmari Amani A. 
Published: January 2025

Vaccination has been an effective method in preventing many childhood-related infections and reducing the risk of infections in adults. Between the mid-1960s and 2015, vaccination has been successful in saving more than 10 million lives. Respiratory pathogens have been a main target for vaccination over decades. Many vaccines were developed against respiratory pathogens such as influenza. virus, Streptococcus pneumoniae, and Mycobacterium tuberculosis. Vaccination against respiratory pathogens faces new challenges every year due to different reasons. The following databases were used in systematic research: Medline (PubMed), Web of Science, and Scopus. Summaries of the found studies were exported by EndNote X8, and duplicate studies were removed. Inclusion criteria were any study. Despite the proven effectiveness of various vaccines against respiratory pathogens, several challenges persist in this field. These include the waning of vaccine-induced immunity, prompting the need of developing vaccines that provide long-lasting protection; vaccination harmful side effects; and the emergence of new subtypes are examples of these challenges. In the aftermath of the COVID-19 pandemic, clinical trials are underway to develop more effective vaccines against a range of pathogens. However, greater large-scale efforts are needed, particularly in low-income countries, to enhance global public health outcomes.
Exploring Hydrological and Environmental Transformations by Tank Structures in Odisha Using Sentinel-2 Data
Authors: Sethi Ranu Rani , Dandapat Asit Kumar , Sarab A Ramakrushna , Sarangi Arjamadutta , Panda Dileep K. , Mohanty Sheelabhadra 
Published: January 2025

Abstract

This study investigates the environmental and hydrological impacts of groundwater recharge structures constructed under the Green Climate Fund (GCF) project between 2018 and 2024 in drought-prone regions of Odisha, India. The research focuses on ten districts—Kalahandi, Keonjhar, Nabarangpur, Rayagada, Sambalpur, Subarnapur, Boudh, and Balangir—characterized by water scarcity and deteriorating vegetation health. Multi-temporal Sentinel-2 satellite imagery was analyzed using indices such as MNDWI, NDII, NDMI, PWI, WBI, and WRI to assess changes in vegetation cover, soil moisture, and water body extent before (2018) and after (2024) the interventions. The results demonstrate significant environmental improvements in districts with targeted water conservation efforts. Kalahandi achieved a notable reduction in low moisture content (95.93–63.30%) and a sharp increase in water-saturated vegetation (1.84–69.91%), reflecting successful recharge structures. Keonjhar showed improvements in vegetation cover (11.82–48.15%) and high-water content (1.06–10.29%), while Boudh exhibited exceptional growth, with water bodies increasing from 13.37–67.65% and high vegetation rising from 18.99–72.78%. Balangir’s severe drought areas decreased from 45.22–19.37%, showcasing the effectiveness of localized water management. Rayagada recorded modest increases in water bodies (19.48–22.43%) but a decline in heavy vegetation (16.53–4.71%). Sambalpur demonstrated substantial progress in moisture retention, with high moisture content rising from 1.11–46.77%. These findings highlight the critical role of afforestation, sustainable agriculture, and targeted water conservation in improving ecological conditions. However, districts impacted by industrial activities require focused interventions to achieve balanced and sustainable environmental development.
Application of Spatial Econometric Analysis to Assess the Convergence of Budget Revenues of Russian Regions
Authors: Patlasov D. A. 
Published: January 2025

Purpose of the study. Within the framework of this study, attention is focused on the assessment of convergence using the budget revenues of the regions of Russia per capita as a key index. Currently, research in the field of economic growth and macroeconomics remains in the center of attention of the scientific community and government agencies, as they play a key role in shaping the development strategies of regions and countries as a whole. In this context, one of the essential aspects is the assessment of convergence, that is, the process of convergence of economic indexes between different regions.Materials and methods. The study examines key methods and models of spatial econometric analysis, such as unconditional convergence, global Moran indexes, etc. Much attention is paid to the interpretation and formation of economically sound conclusions based on the results of econometric modeling.Results. This article is devoted to the application of spatial econometric analysis in the context of the study of differentiation of economic development of Russian regions. Spatial regression analysis is a tool for studying the relationships between various economic variables in various geographical areas, while considering various dependencies and spatial autocorrelation.Conclusion. The results of the study have empirical significance for political and economic decision-making at the regional and national levels. The article provides an important contribution to the methodology of econometric analysis in macroeconomics, expanding the understanding of the relationships between economic variables in various geographical areas.
Construction of a Sparse Covariance Matrix Based on Statistical Data Analysis and Its Use in Choosing an Optimal Portfolio of Securities
Authors: Gorelik V. A. , Zolotova T. V. 
Published: January 2025

Purpose of the study. The aim of the study is to develop a new method for finding an optimal portfolio of securities based on suboptimization using a sparse covariance matrix, and to create a program based on it to automate the procedure for selecting an investment strategy.Materials and methods. The paper presents one of the possible formalizations of a two-criterion investment problem – setting the problem for the maximum expected portfolio yield with an upper limit on the standard deviation. At the same time, the calculation of the standard deviation of a portfolio with a sparse matrix of covariances of financial instruments’ yields is justified. A solution to a two-criterion problem based on the use of the Karush-Kuhn-Tucker optimality conditions is given. All necessary primary calculations and studies are performed in Microsoft Excel; the functions of the Python programming language are used for automation and implementation of the graphical interface.Results. The analysis of the methods used to make investment decisions was carried out and the use of each of them for specific stock market data was justified. To automate analytical approaches to finding the optimal investment strategy with full, partial and absent correlation dependence, a program and a graphical interface were created using the Python programming language libraries. The software product was tested on the example of the investment process with real data of the Russian stock market. The initial data in this study were quotes of shares of Russian companies for the period from 01.01.2019 to 31.12.2021, taken from the Yahoo Finance website. The choice of each of the shares was based on the results of the fundamental and technical analysis.Conclusion. As a result of the conducted research, it was established that the proposed method of finding the optimal strategy using a sparse covariance matrix is a suitable tool for an active investment strategy. The technical implementation of the proposed method - the use of the Python programming language to create a graphical interface – allows automating the process of constructing an investment strategy.