bluuebunny/crossref_metadata_2025_split huggingface dataset:
Etude hydrologique et hydraulique du bassin versant d’assainissement urbain du quartier Adidoadin de la commune Golfe 5 à Lomé (Togo): Proposition pour une gestion pérenne des eaux pluviales
Authors: Fambi Komlan , Ayah Massabalo , Ayité Yawovi Mawuénya Xolali Dany , Bawa Moctar Limam 
Published: August 2024

Ce travail consiste à analyser les phénomènes hydrologiques et hydrauliques du bassin versant d’assainissement urbain du quartier Adidoadin de la Commune Golfe 5 à Lomé, au Togo. Il a pour objectif d’identifier les causes des inondations de ce bassin versant d’assainissement urbain. La méthode de Manning-Strickler a été utilisée pour évaluer le débit d’écoulement d’eau dans les collecteurs et la méthode rationnelle a servi pour la détermination du débit généré par la pluie sur le bassin versant étudié. À travers une combinaison de techniques hydrologiques et hydrauliques de l’étude de cas réalisé pour la vérification de la capacité des collecteurs d’évacuateurs de crues, avec un débit de 3,76 m3/s, a montré que ce débit est supérieur au débit d’eau provenant du bassin versant (0,774m3/s), même avec un coefficient de ruissellement le plus défavorable (0,9). A cet effet, les problèmes d’inondation seraient dus à la présence de crêtes qui ne favorisent pas l’écoulement gravitaire, également des conséquences issues d'une urbanisation mal maîtrisée (défaut de conception des infrastructures, extension de nouveaux quartiers dans des zones à risques). Ainsi, Cette recherche examine les caractéristiques physiques du bassin versant, évalue les régimes de précipitations et de ruissellement, identifie les problèmes d'inondations dûs aux changements climatiques et propose des mesures d'atténuation appropriées pour minimiser les risques d'inondations et d'érosion, tout en favorisant une utilisation efficace des ressources en eau.
This work involves analyzing the hydrological and hydraulic phenomena of the urban drainage catchment area of the Adidoadin district of Commune Golfe 5 in Lomé, Togo. The aim of this study is to identify the causes of floods in this urban drainage watershed. The Manning-Strickler method was used to assess the flow of water in the collectors and the rational method was used to determine the flow generated by rainfall in the catchment area studied. The use of a combination of hydrological and hydraulic techniques to verify the hydraulic capacity of the spillway collectors, with a flow of 3.76 m3/s of the studied case, showed that this flow is greater than the flow of water coming from the catchment area (0.774m3/s), even with the most unfavourable runoff coefficient (0.9). Flooding problems are thus due to the presence of ridges that do not favor gravity flow, and to the consequences of poorly controlled urban development (faulty infrastructure design, extension of new districts into at-risk areas). Henceforth, this research examines the physical characteristics of the catchment, assesses rainfall and runoff patterns, identifies flooding problems due to climate change, and proposes appropriate mitigation measures to minimise the risk of flooding and erosion, while promoting the efficient use of water resources.
Penggunaan model pembelajaran index card match untuk meningkatkan keterampilan berpikir kritis pada mata pelajaran ips siswa kelas iv sekolah dasar
Authors: Solekhah Solekhah , Poerwanti Jenny Indrastoeti Siti , Wahyuningsih Siti 
Published: August 2024

<p class="Abstract"><em>Researchers conduct classroom action research to improve critical thinking skills in social science using index card match learning model. The method used is classroom action research conducted in two cycles and each cycle consists of two meetings. Data collection methods include observation, documentation, interviews, and tests. The subjects in this study were fourth grade students at SD N Totosari No. 102 teachings in 2019/2020 which consist of 26 students. researchers used data analysis with qualitative techniques consisting of reduction, presentation of data, and drawing conclusions. in the first cycle obtained data with a percentage of completeness of 19.23%, then proceed to the second cycle of action with a percentage of completeness of 73.03%. It can be said that the index card match learning model is proven to improve the critical thinking skills in social science subjects.</em></p>
Penerapan model pembelajaran make a match untuk meningkatkan pemahaman konsep kondisi geografis di Indonesia pada peserta didik kelas V sekolah dasar
Authors: Arti Dewi Jois Ayu , Siti Poerwanti Jenny Indrastoeti , Wahyuningsih Siti , Kussriyani Kussriyani 
Published: August 2024

<p><em>The purpose of this research to improve understanding of the concept of</em><br /><em>geographical conditions in Indonesia through make a match model. The target of this research </em><em>is grade 5 students at SD Negeri Tunggulsari II Surakarta in 2019. Classroom action research </em><em>is conducted for two cycles. Totally, this school have 32 students at grade 5. Data collection </em><em>techniques such as interview, observation, test, and documentation with using source and </em><em>technique triangulation. The first cycle resulting in a percentage of 40,63% in classical, and </em><em>the study continued with the second cycle with the percentage of 81,26% in classical terms. </em><em>Based on the result of the research, it can be conclude that application make a match model </em><em>can improved understanding of the concept Indonesian geography condition on 5th students of </em><em>SD Negeri Tunggulsari II Surakarta in the 2019/2020 academic year .</em></p>
Analisis prestasi belajar kewirausahaan ditinjau dari perhatian orang tua, media pembelajaran dan kinerja guru terhadap siswa smk negeri
Authors: Kiswati Kiswati , Purbonuswanto Welius , Christian Daniel Grace 
Published: August 2024

<p class="16"><em>This study aims to determine the influence of parental attention, learning media, and teacher performance individually on the achievements of learning Entrepreneurship students of SMK Negeri Kebumen Year 2020-2021, and to know the influence of parental attention, learning media, and teacher performance together on the achievements of entrepreneurial learning students of SMK Kebumen Year </em><a href="https://ssl.microsofttranslator.com/bv.aspx?ref=TVert&amp;from=&amp;to=en&amp;a=2020-2021.This"><em>2020-2021. This</em></a><em> research was conducted at SMK Negeri 1 Karanganyar and SMK Negeri 1 Kebumen. The research time is November 2020 to January 2021. This study uses a quantitative correlational approach with a population of 643 students. The sample was determined by 25% or as many as 160 students taken by cluster random sampling method. Data analysis includes descriptive analysis, prerequisite test analysis of data analysis, and hypothesis test. The results of this study showed that the variables of entrepreneurial learning achievement were influenced by parental attention variables by 27.3%, learning media variables by 24.8%, teacher performance variables by 18.1%, and from the three variables together by 70.2% so that there are still 29.8% other factors that can affect the achievement of entrepreneurial learning but were not studied in this study. Therefore, it is expected that in further research can be found other factors that can influence the achievement of learning entrepreneurship</em>. </p>
Pelaksanaan Belajar Dari Rumah (BDR) selama darurat COVID-19 di kelas V sekolah dasar
Authors: 'Azizah Watin , Atmojo Idam Ragil Widianto , Daryanto Joko 
Published: August 2024

This qualitative research was made in purpose to know the implementation of BDR (Belajar Dari Rumah) and to determine the effectiveness of BDR (Belajar Dari Rumah) in class VA SDN Mojolegi in terms of the quality of learning, of suitability of learning level, of incentives, and of time. Data collection techniques in this study are through interview techniques, observation, angket form and documentation. Data sources in this study are through informants in the study, which are teacher and students of class VA, the implementation process of BDR in class VA, and documents. The learning process of BDR will be effective when the learning process has all good grades of effectiveness criteria. The result of the study shows that implementation of BDR in class VA has been following the guidelines from the Indonesian Ministry of Education. It also shows the effectiveness of BDR learning process in class VA is still less effective and needs improvement. The effectiveness of BDR learning process in class VA is still ineffective, due to the lack of interest and motivation of students. Also the lack of inovations and continuous interaction between students and teachers in the BDR learning process which causes less effective learning process for class VA students at SDN Mojolegi Teras, Boyolali.
Analisis kesulitan belajar melalui pembelajaran daring di kelas IV sekolah dasar
Authors: Saputri Santika Murni , Rukayah Rukayah , Matsuri Matsuri 
Published: August 2024

<p>Santika Murni Saputri.<strong> Analisis kesulitan belajar melalui pembelajaran daring di kelas iv sdn tawengan kecamatan teras kabupaten boyolali tahun ajaran 2020/2021. </strong>Skripsi, Universitas Sebelas Maret, Jalan Slamet Riyadi 449 Surakarta, Jawa Tengah, 57146, Indonesia. santikamurni22@gmail.com</p><p>Mengetahui kesulitan belajar melalui pembelajaran daring di Kelas IV SDN Tawengan Kecamatan Teras Kabupaten Boyolali. Jenis penelitian ini bersifat deskriptif. Bertempat di SD Negeri Tawengan, Kecamatan Teras, Kabupaten Boyolali. Sumber data yang di gunakan ialah informan atau narasumber, peristiwa dan arsip. Teknik yang di gunakan dalam mengumpulkan data memanfaatkan metode observasi, metode dokumentasi, metode angket dan metode wawancara. Teknik analisis data yang di gunakan ialah analisis kualitatif.</p><p>Berdasarkan penelitian melalui wawancara observasi dan survei, ia mengatakan pembelajaran daring ialah pembelajaran secara langsung tanpa tatap muka, memanfaat kan media sosial dalam berbagi informasi dan interaksi antara guru dan siswa dengan mengandalkan jaringan internet dan memanfaat kan aplikasi WhatsApp. Kesulitan yang dialami siswa ialah siswa atau orang tuan yang belum memiliki fasilitas handphone dengan kualifikasi android, kesulitan dalam menyerap serta mengolah materi yang diperoleh dari guru melalui media online atau perbedaan tingkat pemahaman siswa dengan orang tua. ' kurangnya pemahaman, oleh karena itu, mereka tak bisa mengajar siswa mereka. Dan, jaringan internetnya kurang stabil.</p><p><strong>Kata kunci: </strong>Pembelajaran daring, kesulitan belajar.</p><p> </p>
Hubungan bimbingan orang tua dan motivasi belajar terhadap hasil belajar matematika materi pecahan sekolah dasar
Authors: Muslimah Mailani , Poerwanti Jenny Indrastoeti Siti , Sularmi Sularmi 
Published: August 2024

<p class="Abstract">The aim of this study 1) to know the correlation of parental involvement with mathematics academic achievement 2) to know the correlation between learning motivation and mathematics academic achievement 3) to know the correlation of parental involvement and learning motivation with mathematics academic achievement. The study uses a survey method. The probability sampling technique is the technique used in this study. The subjects of this study were the fourth grade students in Laweyan district of 2021/2022. The results of the study showed that first, there was a correlation of parental involvement with mathematics academic achievement which has a Pearson Correlation value of 0.430 indicating that the correlation level is moderate. Second, there was a correlation of learning motivation with mathematics academic achievement which has a Pearson Correlation value of 0.434 indicating that the correlation level is moderate. Third, there was a correlation of parental involvement and learning motivation with mathematics academic achievement which has a Pearson Correlation value of 0.605 indicating that the correlation level is high</p><strong>Kata kunci:</strong> parental involvement, learning motivation, mathematics achievement, and correlation
Implementasi nilai pendidikan karakter cinta tanah air pada pembelajaran tatap muka terbatas di sekolah dasar
Authors: Syahputri Khoirunnisa , Istiyati Siti , Kamsiyati Siti 
Published: August 2024

<p class="Abstract"><em>This study aims to describe the implementation of the character education value of love for the homeland at Mangkubumen Kidul Surakarta. This research is a qualitative research. The subjects of this study were students of class IVB Elementary School Mangkubumen Kidul Surakarta, totaling six student respondents. Data collection techniques in this study used interviews, observations, and questionnaires. The validity of the data in this study used technical and time triangulation. Data analysis used the Miles-Huberman interactive analysis model. The results of this study indicate that in the implementation of the character education value of love for the homeland, student respondents can act to accept the diversity with a percentage of 80%; using domestic products with a percentage of 100%; imitate the value of heroism with a percentage of 84%; memorized the national anthem with a percentage of 74%; build a person who likes to learn with a percentage of 87%; and prioritize the public interest over personal or group with a percentage of 49%. Based on the average data obtained, it can be identified that the love of the homeland character education has been implemented very well.</em></p><p class="Abstract"><em></em><strong><em>Keywords: </em></strong><em>character education, love for the homeland</em><em> a</em><em>t elementary school.</em></p><p class="Abstract"> </p>
Analisis kesulitan pemecahan masalah soal cerita materi pecahan ditinjau dari gender studi kasus peserta didik sekolah dasar
Authors: Parahita Nindya Ashiefa , Riyadi Riyadi , Sriyanto M. Ismail 
Published: August 2024

<p class="Abstract">This study aims to explain the forms of difficulties experienced by students in solving story problems in fractional material and their causal factors in terms of gender. The indicator of the problem solving steps used is the Polya step. The research subjects were fourth grade students at SD Negeri 1 Tanggeran for the 2021/2022 academic year. This study uses a qualitative method with a case study approach. The data sources in this study were fourth grade students of SD Negeri 1 Tanggeran. The research subjects were two male students and two female students. The data collection techniques used were interviews and document studies. The validity test technique used is time triangulation and technical triangulation. The data analysis technique used is the Miles and Huberman model analysis technique. The results of this study indicate (1) The forms of difficulties experienced by male students are difficulties in planning problem solving and difficulties in solving problems according to plan. (2) The forms of difficulties experienced by female students are difficulties in planning problem solving and difficulties in solving problems according to plan. (3) Factors causing difficulties experienced by male and female students.</p><p class="Abstract"><strong>Keywords:</strong> Difficulty, Problem Solving, Gender, Elementary School. </p>
Analisis muatan high order thinking skills pada instrumen penilaian pembelajaran tematik di buku guru sekolah dasar
Authors: Herdianingsih Dinda , Sukarno Sukarno , Yulisetiani Septi 
Published: August 2024

<em>This study aims to analyze the intensity of the HOTS content in the second grade teacher book theme 7 "Togetherness" and the fourth grade teacher book theme 1 "The Beauty of Togetherness". This research is a qualitative research with the type of document analysis. The data sources of this research are the thematic learning assessment instruments in the second grade teacher book theme 7 "Togetherness" and the fourth grade teacher book theme 1 "The Beauty of Togetherness". The data collection technique used in this research is a documentary study. The data validity test technique used triangulation techniques and increased persistence. Data analysis techniques used the interactive model of Milles and Hubberman with the stages of data collection, data reduction, data presentation and conclusions. The results of this study are the assessment instruments in the class II teacher's book theme 7 "Togetherness" with the HOTS category, namely a total of 12 instruments or 27.3% of the total number of assessment instruments. The assessment instrument in the fourth grade teacher's book theme 1 "The Beauty of Togetherness" with the HOTS category is 17 instruments or 51.5% of the total number of assessment instruments. </em>
Peningkatan Keterampilan Menulis Tegak Bersambung Melalui Metode Pembelajaran Drill di Kelas II Sekolah Dasar
Authors: Aruna Risna , Sriyanto Muhammad Ismail , Matsuri Matsuri 
Published: August 2024

<em>The purpose of this research is to improve the cursive handwriting skill through drill learning method of the students in 2nd grade of SDN Soropadan No. 108 Surakarta. Classroom action research was used for this study, which was conducted over the course of two cycles. Every cycle had two meetings. Students in 2nd grade of SDN Soropadan No. 108 Surakarta was the subject of this research. They were 32 total students. The data was collected by observation, interview, test, and documentary. The data validity was using content validity, source triangulation and technique triangulation. The data analysis was using interactive analysis model. According to research results, the students in 2nd grade of SDN Soropadan No. 108 Surakarta saw an improvement in their cursive handwriting skills. When compared to the minimum guaranteed score of 75, the pre-action average for the cursive handwriting skills test was 57.03, with a classical completion rate of 16%, or as many as 5 out of 32 students. In the first cycle, the average value was 75.4, with a classical completion rate of 56%, or 18 out of 32 students, being successful. In the second cycle, the average value increased to 85.77, with classical completeness reached 84%, or 27 out of 32 students successfully completed. The conclusions in this research is cursive handwriting skill can be improved through drill learning method of the students in 2nd grade of SDN Soropadan No. 108 Surakarta.</em>
The Effect of Seamount Subduction on the Formation of Holocene Marine Terraces: A Comparison of Kinematic and Mechanical Plate Subduction Models
Authors: Komori Junki , Ando Ryosuke , Miura Seiichi , Arai Ryuta 
Published: August 2024

Abstract

Marine terraces have long been a subject of paleoseismology, revealing the rupture history of megathrust earthquakes. However, the mechanisms underlying their formation, in relation to crustal deformation, have not been adequately explained by kinematic models. A key challenge is that the uplifted shoreline resulting from a megathrust earthquake tends to subside back to sea level during subsequent interseismic periods. This study focuses on the remaining permanent vertical deformation resulting from multiple sequences of megathrust earthquakes with plate subduction and examines it quantitatively using three plate subduction models. Specifically, we examine the effects of irregular geometries in the plate interface, such as subducted seamounts. The subduction models employed include the kinematic subducting plate model, the elastic/viscoelastic fault model, and the mechanical subducting plate model (MSPM). The MSPM, introduced in this study, considers more realistic boundary conditions and 3-D geometry of the plate-interface and the subducting slab. employing stress boundary conditions. A subducted seamount strongly influences surface deformation, resulting in a concentrated permanent uplift above it. We further examine the MSPM by employing the plate geometry around the Sagami Trough, central Japan, to compare with geomorphological observations. The simulation of earthquake sequences demonstrates that coseismic uplifts can persist over time and contribute to the formation of marine terraces. The results demonstrate that geological observations of coseismic and long-term deformations can be explained by the influence of a subducted seamount, previously identified in seismic surveys.
The impact of object properties and scan geometry on the quality of TLS data
Authors: Bakhtyar Ahmed Mala  , Dleen Muhammed Salih Al-shrafany  
Published: August 2024

Object surface Properties, range, and measuring trip time are main variables affecting the positional accuracy of the computed point clouds by the terrestrial Laser Scanner (TLS). In this research, Practical experiments were carried out by Faro focus premium TLS in order to investigate how does the variation of surface roughness and its reflectivity affect the positional accuracy of the measured scanner data at different scan angles and ranges. For this purpose, different materials that have distinct surface properties were conducted (glass, steel, wood, ekoplast, and total station (TS) sheet targets). Also, to examine the impact of the surface color, three of those selected materials have been painted with RGB color and black and white colors as well. About 54 scans were recorded during the experiment as all materials were scanned at three different scanning angles of (0˚, 30˚, and 60˚) and at ranges of 5 and 20 meters. The experiment's findings reveals that, at various incident angles, smooth surfaces have a greater impact on the accuracy of the scanned objects to create 3D point clouds than do rough surfaces. Furthermore, the total RMSEs in the point clouds position that measured from surface painted with red and black colors is greeter and higher than those measured from blue, green, and white colors painted surfaces. Interestingly, the total station target had never reflects the laser beam at all incident angles and ranges for class-1 laser beams. Additionally, the intensity of various materials varies. For example, the smooth materials steel and glass have varying degrees of accuracy because of their respective characteristics of the surface.
Experimental investigation of erosion and transport of binary sediment in sewer pipes
Authors: Zhang Run , Zhu David Z. , Chan Dave , van Duin Bert 
Published: August 2024

ABSTRACT

Understanding sediment transport in storm sewer systems is essential to prevent pipe blockages, associated flooding, and maintenance. In this research, a laboratory study was conducted in a pipe to investigate the erosion and transport process of a binary sediment, i.e., a material with two different particle sizes. The sediment used in this study was a mixture of two sizes of spherical glass beads (0.8 and 4 mm) and two sizes of natural soil (sand and gravel), with different amounts of small size particles. The results show that the critical velocities for the initiation of sediment transport increase linearly with a decrease in the fine particle content of the mixture. A method to predict the critical velocity of a binary mixture is proposed based on the fine content and the critical velocity of single-size large particle and single-size small particle sediments. The transport rate of the mixture lies between that of the single-size large sediment and single-size small sediment. The transport rate is increased with an increase in the fine content, which means that mixing small particles with large particles can significantly increase the transport rate of large particles and the total transport rate.