bluuebunny/crossref_metadata_2025_split huggingface dataset:
Deep Learning Based 3-Dimensional Rock Discontinuity Trace Mapping and Orientation Characterization
Authors: Kim S. S. , Lee G. W. , Kim T. H. , Diaz M. B. , Kim K. Y. 
Published: September 2023

ABSTRACT
We propose a 3D rock discontinuity trace mapping technique based on deep learning. Additionally, we present a methodology for characterizing the orientation of rock discontinuity traces using the mapped results. The U-net-VGG 16 deep learning model, which is a transfer learning model based on U-net was used to achieve more precise and accurate discontinuity trace mapping. To verify the proposed methodology, a rock outcrop in the southern Korean peninsula was selected to create a 3D discontinuity trace model. Rock images and automatically mapped trace images obtained with the deep learning model, were combined to generate the 3D discontinuity trace model. The orientation of the rock discontinuity traces were calculated by fitting a plane to the point cloud 3D data of linear segments of the discontinuity traces, and obtaining the orientation of the generated planes. The orientation of discontinuity traces estimated using this method was validated by comparing those results with the orientations of the rock surfaces adjacent to the rock discontinuities. The results indicate that the deep learning model was able to properly map major discontinuity traces. Moreover, the characterization of discontinuity orientations using the 3D discontinuity trace model produced reliable results, with a maximum average difference between the orientations measured through discontinuity traces and adjacent rock surfaces of 2.1°. We believed that rock mass characterization using the proposed method reduces subjectivity and increases reliability.

INTRODUCTION
In rock engineering, rock mass stability is generally evaluated using classification systems such as the Rock Mass Rating (RMR), the Q-system, or the Geological Strength Index (GSI). The scores or values can serve to determine ground support or blasting patterns. Typically, rock surface mapping is performed manually. However, this process is subjective and can lack reliability. Moreover, areas of difficult access can increase the risk of accidents or diminish the rock survey quality.
Pengaruh Ekonomi Dan Prilaku Filantropi Islam Di Era Pandemi Covid – 19 Terhadap Kebahagiaan Mahasiswa Institut Agama Islam Tafaqquh Fiddin Dumai
Authors: Bakti Aulia 
Published: September 2023

pandemi covid-19 tidak hanya berdampak pada kesehatan masyarakat, tetapi juga tidak mempengaruhi kondisi perekonomian, pendidikan, dan kehidupan sosial masyarakat. salah satu dampak yang sangat terasa dan mudah sekali dilihat adalah melemahnya konsumsi rumah tangga atau melemahnya daya beli masyarakat secara luas. prilaku filantropi islamiah praktik kedermawanan dalam islam seperti zakat, infaq, sedekah, dan wakaf (ZISWAF) atau sekarang lebih populer dengan istilah filantropu islam merupakan sebuah kajian penting dalam arus sejarah islam. Penelitian ini bertujuan untuk mengetahui pengaruh ekonomi dan prilaku filantropi islam terhadap kebahagiaan mahasiswa Institut Agama Islam Tafaqquh Fiddin Dumai. populasi dalam penelitian ini adalh 388 mahasiswa Institut Agama Islam Tafaqquh Fiddin Dumai. pengambilan sampel dilakukan dengan menggunakan teknik Purposive Smapling sehingga jumlah sampel 197. penelitian ini menggunakan metode penelitian kuantitatif. Data yang digunakan dalam penelitian ini adalah data primer, data dianalisis menggunakan analisis regresi linier dengan bantuan program SPSS 21. Hasil penelitian ini menyatakan terdapat pengaruh positif dan signifikan antara ekonomi dan prilaku filantropi islam diera covid-19 terhadap kebahagiaan mahasiswa dengan presentase 86% dan sebesar 14% dipengaruhi oleh faktor lain.
Manufacturing of Low-Cost Parabolic Dish Concentrators with Manual Dual-Axis Tracking
Authors: Benzetta Abd Elhalim , Abderrezek Mahfoud , Chettoh Ali , Benbahia Mokhtaria Asma 
Published: September 2023

The increased rate of energy crises around the world results in expanding the role of Concentrating Solar Power (CSP) technology for different applications, comprising heating process and power generation applications. The Parabolic Dish Concentrator (PDC) with its large concentration ratio and its modular capacity attracts researchers’ efforts. In this research work, we have designed and developed a PDC with back silvered mirrors as reflector material. Then we have sized the following geometric parameters: the dish diameter, the focal length, the aperture area, the rim angle, the geometric concentration ratio, the receiver material, and the receiver diameter. Furthermore, a dual-axis manual tracking system has been built for this PDC. It should be mentioned that the different components of the PDC have been recycled from a scrap yard to develop a low-cost PDC system. Finally, we have investigated the temperature evolution as a function of time at the focus spot. The maximum temperature obtained is 112 °C for the PDC with mirror. The findings of the study reveal the possibility of building a low-cost solar concentrator with good performance and high quality, only by employing recycled materials, and it could be operated in various applications.
Advanced Pitch Angle Control Based on Genetic Algorithm and Particle Swarm Optimisation on FAST Turbine Systems
Authors: Gorel Goksu , Abdi Mahdi O. 
Published: September 2023

In this paper, the increase in the quality of the rotor speed of wind turbines and the decrease in mechanical loads on the turbines are investigated. Adjusting the angle of the blade to the nominal wind speed, the rotor speed of the wind turbine is maintained at its nominal value. Using control methods (such as proportional integral (PI), genetic algorithms (GAs), and particle swarm optimisation (PSO)), different results can be recovered. In addition, individual control of the blade tilt angle allows us to reduce the mechanical loads on the turbine with the control methods. The wind turbine was modelled in Matlab/Simulink. The simulation results show that individual control of the blade tilt angle ensures the quality of the rotor speed of the wind turbine and reduces the balanced periodic loads on the wind turbine. In the first part, we study the wind turbine in a global way, as well as the method used to calculate them. Then, we discuss the FAST system, which was used to model the wind turbine, as well as the design of individual pitch angle control. As a result, it is possible to reduce the fatigue of the mechanical wind turbine parts. According to the study, the mechanical load for all three blades was reduced by an average of 44 % compared to the PI and PSO methods and by 1 % compared to the PI and GA methods. The control of the pitch angle in wind energy systems is performed with different control methods. The study analysis of the mechanical loads found that they are largely balanced. Winds that blow perpendicular to the turbine blades on the x-axis provide these loads.
Funcions reals d'una variable real
Authors: Boadas Elvira Juan 
Published: September 2023

Conté: vol. 1. Qüestions inicials, límits, continuïtat, derivació -- vol. 3. Integral definida, integral impròpia
Aquesta publicació tracta els temes fonamentals de les funcions reals d'una variable real: conceptes bàsics, límit, continuïtat, derivació i integració, que formen part en la majoria dels programes de les assignatures del primer curs universitari, enllaçant amb els continguts de l'ensenyament secundari. Els temes estan desenvolupats amb rigor i tenint molta cura en utilitzar una simbolització adequada. Encara que, en general, no figuren les demostracions corresponents, es pretén que l'alumne adquireixi l'esquema mental d'aquests capítols bàsics del coneixemnt científic i tècnic, que podrà complementar adequadament segons el nivell dels estudis que realitzi. Per a un complet aprenentatge s'inclouen en cadascun dels capítols una col.lecció d'exercicis resolts dels quals es dóna el resultat final perquè l'estudiant pugui conèixer si ha après els continguts estudiats. Bàsicament està pensat per a tots els que volen adquirir una base sòlida del Càlcul infinitesimal i, en particular, per aquells estudiants que tenen més dificultat en assolir aquests coneixements o no poden assistir a classes presencials en nombre suficient.
Upaya Meningkatkan Hasil Belajar Matematika dengan Pendekatan Contextual Teaching and Learning (CTL) pada Siswa Kelas V Semester I Tahun Pelajaran 2019– 2020 di SDN 2 Setanggor
Authors: Wirya Baiq Sri Olati 
Published: September 2023

This study aims to improve student's learning outcomes in solving mixed calculation problems with contextual teaching and learning (CTL) approaches. This research method is a type of classroom action research. This class action research was conducted at SD Negeri 2 Setanggor which is addressed to Lendek Village, Sukamulia sub-district. The implementation of this study was carried out in class V of the 2019/2020 school year with a total of 27 students. Based on the discussion of the results of the cycle I and cycle II research it can be concluded that using car-car props on the calculation of integer calculation operating materials with contextual teaching and learning (CTL) approach, can improve student learning outcomes this is proven: In cycle, I the number of students completed on the main operation calculates integers (addition and subtraction) with contextual teaching and learning (CTL) approach is 66% or 18 of the 27 students. In cycle II, the percentage of student completion experienced improvements with the contextual Teaching and Learning (CTL) approach which is as much as 85% or 23 out of 27 students.
Pola Belajar Mahasiswa Disabilitas Netra pada Masa Pandemi Covid-19 di UIN Raden Mas Said Surakarta
Authors: Handayani Ilham Putri , Achadi Muh Wasith , Khairi Alfin Miftahul 
Published: September 2023

The Covid-19 pandemic has forced the government to establish a distance learning system and online learning in the implementation of education in Indonesia. Online learning is indeed not to difficult if carried out by normal students, but it is different for children with special needs, especially children with visual impairments who have limitations in their vision. The various problems implied by this pandemic have drastically changed the learning patterns of children with visual impairments. The porpuse of this research is to study further about the learning patterns of students with visual impairments at UIN Raden Mas Said Surakarta. This research is included in qualitative research using descriptive method. The data sources used were 2 students with visual impairments in the Islamic Counseling Guidance Study Porgram. The Techniques used in data collection are interviews and documentation. The result of this study revealed that the leraning patterns of students with visual impairments during the Covid-19 pandemic at UIN Raden Mas Said Surakarta included: (1) independent learning patterns, (2) group learning pattern or discussions and, (3) guided learning patterns. Of the three patterns, the learning system that blind students go through is very different form face-to-face learning, starting from preparation for learning, how to do assignments and how to take part in learning that really needs help form various parties even though they have used supporting applications in learning.
Facteurs de contingence et choix des outils de contrôle de gestion dans les petites et moyennes entreprises
Authors: NOUDOHOUENOU Estelle , SYLLA DOUCOURE Karima 
Published: September 2023

Objectif : L’objectif de cette étude est de mesurer l’influence de l’ethnie du dirigeant de la PME dans la relation : facteurs de contingence et choix des outils de contrôle de gestion dans les petites et moyennes entreprises.
Méthode : Pour atteindre cet objectif, une approche mixte est adoptée. La phase qualitative porte sur 30 entrevues et la phase quantitative sur un échantillon de convenance de 650 PME au Bénin.
Résultats : Les résultats mettent en évidence un effet positif et significatif entre les variables environnement, informatisation, style de décision en lien avec le choix des outils de contrôle de gestion. Les résultats montrent également que les relations avec les personnes de même ethnie n’assurent aucun rôle de modération dans le lien entre environnement, informatisation de la PME et le choix des outils de contrôle de gestion.
Originalité : Rares sont les études en sciences de gestion notamment en contrôle de gestion qui prennent en compte les facteurs socioculturels. L’originalité de cette étude réside dans la prise en compte du facteur socioculturel ethnie en contrôle de gestion.
PENGUATAN KOPERASI KARTINI MANDIRI LESTARI DESA PASAREAN KECAMATAN PAMIJAHAN KABUPATEN BOGOR
Authors: Setiawan Rudi , Ramayanti Rizka 
Published: September 2023

Koperasi sebagai unit usaha bersama yang dimiliki oleh para anggotanya tentu saja membutuhkan pengelolaan yang baik dan transparan serta pengelola koperasi hendaknya berperan aktif dalam menjalankan perannya membina para anggotanya agar dapat maju dan tumbuh bersama dalam membangun usaha. dalam perjalanan pendirian koperasi kartini mandiri lestari hingga saat ini masih terdapat sejumlah tantangan yang dihadapi diantaranya adalah permasalahan teknis operasional Koperasi yang masih dilakukan secara manual, tantangan lain datang dari minimnya pengetahuan manajemen usaha anggota koperasi sehingga usaha yang dibangun cenderung tidak bertahan lama. Pada kegiatan pengabdian masyarakat ini dilakukan upaya pemecahan masalah yang ada pada koperasi kartini mandiri lestari dengan kegiatan berupa sosialisasi, pelatihan, pendampingan dan implementasi aplikasi koperasi serta dilakukan monitoring dan evaluasi dari setiap kegiatan. Hasil evaluasi kegiatan sosialisasi penyusunan laporan keuangan dan biaya produksi menyatakan telah terjadi peningkatan pemahaman peserta sebesar 74.07%, sedangkan penilaian interpretasi pengguna terhadap aplikasi koperasi mencapai 80% dalam kategori layak di implementasikan.
Kata Kunci: Penguatan Koperasi, Koperasi, Aplikasi Koperasi, Laporan Keuangan,
Peningkatan Motivasi Kerja dan Kinerja Pegawai Melalui Peran Kepemimpinan, Kompetensi dan Disiplin Kerja pada Kecamatan Kartasura
Authors: Lathifah Ifah , Yuniastuti Fitri 
Published: September 2023

Tujuan untuk mengetahui, menguji dan menganalisis peran kepemimpinan, kompetensi dan disiplin kerja terhadap motivasi kerja dan kinerja pegawai Kecamatan Kartasura. Metode pengumpulan data adalah observasi dan kuesioner. Teknik sensus sampling sebanyak 39 responden. Analisis data meliputi pengujian instrumen, pengujian linearitas, pengujian hipotesis, dan analisis jalur. Hasil penelitian membuktikan disiplin kerja memberikan dampak signifikan terhadap motivasi kerja namun kepemimpinan dan kompetensi memberikan dampak tidak signifikan; kepemimpinan dan kompetensi memberikan damapak signifikan terhadap kinerja namun disiplin kerja dan motivasi kerja memberikan dampak tidak signifikan. Uji F membuktikan kepemimpinan, kompetensi, disiplin kerja dan motivasi kerja memberikan damapak signifikan terhadap kinerja. Uji R2 total = 0,852, kinerja di jelaskan kepemimpinan, kompetensi, disiplin kerja, dan motivasi kerja = 85,2 % dan sisanya = 14,8 % di jelaskan faktor yang lain. Analisis jalur membuktikan jalur langsung kompetensi adalah jalur paling dominan dan efektif dalam peningkatan kinerja. Motivasi kerja bukan merupakan variabel intervening, karena kurang efektif memediasi hubungan kepemimpinan, kompetensi dan disiplin kerja dengan kinerja.
An Electric Vehicle Analysis Model for Sustainable Environment in Devoicing Nationals
Authors: Nabeeh Nada A. , Sallam Karam M. , Mohamed Ali Wagdy 
Published: September 2023

The usage of fossil fuels is regarded as the generation of energy alternative towards electric vehicles (EVs) in third-world nations for a cleaner transportation sector. The rapid development of EVs is the most effective solution, even if the short-term ecological benefits for third-world nations cannot cover the short-term expenses. Since ecological issues have opened the door for certain developing nations to catch up to the worldwide competition, it is important to weigh other options to bring EVs to the marketplace. Hence, the study proposes a model of neutrosophic set combined with entropy to deal with uncertain cases. The proposed model uses the single-valued neutrosophic to compute the weights of criteria and rank alternatives. A case study with three options, eight criteria, and ten alternatives are proposed to examine the EVs implementation decision-making procedure. The results show that the performance criterion as the best criteria in EVs. Consumers place a high value on the speed, maneuverability, and interior comfort of EVs.
Realidad Virtual y Educación: Retos y Propuestas Desde Actores Educativos del Bachillerato Público en Ecuador
Authors: Espinoza Castro Karla Esther , Plaza Chalco José Luis , Bravo Guzhñay Byron Florencio , Mogrovejo Mogrovejo Erick Michael 
Published: September 2023

La integración del avance tecnológico en la educación, es de vital importancia puesto que, permite a los estudiantes disponer de herramientas que propicien un aprendizaje personalizado, que se adapte a sus necesidades y habilidades individuales. Así pues, la Realidad Virtual [RV], se ha convertido en una de las herramientas tecnológicas de mayor éxito a nivel mundial, ya que su uso promueve clases agradables e interactivas, durante las cuales los estudiantes se sumergen en entornos virtuales y experimentan con ellos. En Ecuador, es imperativo generar espacios dinámicos, que faciliten la conexión entre tecnología y práctica docente, puesto que, se han identificado carencias en esta relación. A través de la presente investigación, brindamos aportes en tal sentido, mediante el análisis de los retos y propuestas para la implementación de la RV en educación, desde las percepciones de actores del bachillerato público. El estudio tiene un enfoque mixto, de alcance descriptivo exploratorio, en el cual se aplicaron las técnicas de encuesta y grupo focal a una población de 463 estudiantes del bachillerato de la Unidad Educativa [UE] Luis Cordero. Como principales resultados se evidencian las deficiencias que existen en la UE en el desarrollo de aprendizaje experimental, el uso de laboratorios y el acceso a la tecnología. Finalmente se concluye que la RV puede ser implementada para la enseñanza experimental de Biología y Química a través de laboratorios virtuales, en razón de la infraestructura con la que cuenta la UE y la predisposición e interés de docentes y estudiantes en la herramienta.
The Effect of Mutagenesis on the Production of Mycelia Growth of Auricularia Species in Nigeria
Authors: E. T. Abikoye, , J. K. Oloke, , P. C. Okorie, , A. K. Lawal, , A. O. Anibaba, , O. F. Oluwawole, , A. A. Odunuga, , M. O. Ajao, , O. D. Adelaja, , O. B. Okeowo, , A. Ngajo, 
Published: September 2023

Auricularia species is a jelly-like edible mushroom belonging to the class Basidiomycete, Family Auriculariacea. It has many medicinal properties and is widely consumed in Nigeria. Not much research effort appears to have been conducted on its domestication and commercial production in Nigeria. This study evaluated the use of sawdust and rice bran as potential substrates for its cultivation. Two strains of Auricularia species were collected from the wild and identified as Auricularia polytricha and Auricularia subglabra by genetic DNA extraction. Pure cultures of the species were screened for strain improvement by mutagenesis using UV light and ethyl methyl sulfonate mutagens. Spawn of the wild species and the mutants were produced using sorghum grain. The produced spawn was used for the production of the mushroom fruit bodies using sawdust supplemented with rice bran. The biological efficiencies of both wild and mutant were 197% and 90% respectively. A combination of sawdust and rice bran supported the growth of both species of Auricularia. The Rate of spawn running during spawn production was also negatively affected by mutagenesis in mutants.
Unveiling the Potential of Antioxidant Proteins with the Integration of Little Millet Phytochemicals from GC-MS Studies through In silico Approach
Authors: Sathyamurthy Dilipraj , Kathirvel Pavitra , Natesan Senthil , Narayanan Manikanda Boopathi , Duraisamy Kavithamani , Unni Krishnan , Mannu Jayakanthan 
Published: September 2023

Aim: Millet extracts contain bioactive compounds that have antioxidant properties, anti-diabetic, anti-inflammatory, and other health-promoting properties. Little millet contains more protein, minerals, vitamins, and carbohydrates than rice and wheat. The dynamics of soil organic matter may be significantly impacted by the presence of antioxidants compounds in the soil. Antioxidants and protein-modifying substances are dietary components that change numerous characteristics and, in some cases, reverse ageing. Thus, exploring the phytochemicals in little millet is very much essential in understanding its biological functional implications.
Methodology: We have carried out the GCMS analysis for the little millet (seed). Further, we have performed the molecular docking and molecular dynamics simulation for the shortlisted phytochemicals.
Results: We screened the metabolites using GCMS analysis due to the unexplored phytochemicals of little millet. Docking against the little millet phytochemicals was done with a focus on key antioxidants such as superoxide dismutase, catalase, and glutathione peroxidase. Acetin compound displayed strong binding with superoxide dismutase and glutathione peroxidase, while hexadecenoic acid exhibited best affinity with catalase. Through molecular dynamics simulations, we found the glutathione peroxidase complex to be the most stable. This stability implies enhanced antioxidant activity, crucial in counteracting oxidative stress.
Conclusion: This study uncovers the untapped potential of little millet’s phytochemicals. By elucidating their interaction with vital antioxidant proteins, it opens avenues for innovative anti-aging strategies, health interventions and helps in enhancing the plant defence mechanism.
Risk Management in Medical Device Industry
Authors: Khinvasara Tushar , Ness Stephanie , Tzenios Nikolaos 
Published: September 2023

In spite of the fact that risk management has developed into an essential component of the process of developing medical devices, as mandated by both domestic and international regulations and standards, there is still no all-encompassing model that describes how risk management in the development of medical devices ought to be approached, particularly in terms of the types of risks that ought to be addressed. This is due to the fact that risk management has developed into an essential component of the process, which is mandated by both domestic and international regulations and standards. The present focus of risk management in the industry of developing medical devices is on technical risks, such as product, usability, and development process hazards. This is done in compliance with the norms and laws of standards. On the other hand, non-technical risks, such as those associated with businesses and projects, are not given nearly enough consideration. This review focuses on the risk management in medical device industry.