bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Empirical Formula for Assessing the Characteristic Strength of Unreinforced Laterite Stone Masonry
Authors: Seini Moussa Hassane , Djoubissié Denouwé Decroly , Lawane Abdou , Pantet Anne , Diop Mamadou , Boko Koami Wisdom 
Published: May 2024

This study aims to determine the needed coefficients for evaluating the uniaxial compressive strength characteristic value for masonry structures made of Laterite Stone (LS) and cement mortar, resulting from experiments conducted in the laboratory evaluating the compressive strengths of the laterite stone and mortar separately in masonry. It proposes calculation coefficients for the completion of Eurocode 6 data that fit the behavior of laterite stone-based masonry. The laterite stone blocks are extracted from three quarries in southern Burkina Faso. The dimensions of the masonry samples tested are 800 mm × 800 mm × 135 mm (±5 mm) with a cement mortar joint of 20 mm (±5 mm) thick. The different failure modes of masonry were also explored. The tests carried out on the masonry showed that the failure is initiated by vertical cracks through the block-mortar interface at a quarter of the width of the walls, generally at 40 to 60% of their maximum strength. The statistical analysis made through a linear regression from the standard model of approximation of the characteristic strength of masonry in Eurocode 6 was used to set out parameters for the empirical relation. The proposed formula considers the intrinsic properties of the block and the mortar, the thickness of the mortar, the dimensions of the masonry block, and the geometry of the masonry itself to evaluate its compression strength. The adequacy between the model and the experimental values is evaluated through the coefficient of determination and the standard error of 0.94 and 0.041 MPa, respectively. Doi: 10.28991/CEJ-2024-010-04-07 Full Text: PDF
Properties and Microstructure of Treated Coal Bottom Ash as Cement Concrete Replacement
Authors: Alosta Moad , Mamdouh Ahmed , Al Mufargi Hussein , Abd Aziz Farah N. A. , Rashid Ahmed , Elbasir Otman M. M. , Al Dughaishi Husam 
Published: May 2024

Sustainable construction is a rapidly growing area of research focused on using industrial waste to replace Portland cement in concrete. This approach not only reduces CO2emissions from cement production but also serves as an effective way to diminish the environmental impact of concrete production. This study aims to investigate the properties of Coal Bottom Ash (CBA) after undergoing two different treatments: flotation and burning. It also evaluates the impact of CBA as a cement replacement in concrete with different replacement percentages (5%, 10%, 15%, and 20%). Chemical analysis of CBA has revealed that it can be classified as a pozzolanic material due to its high content of silicates, aluminates, and iron oxides. The microstructure of CBA showed a porous, angular, and irregular surface with many voids. The findings of this study revealed that the optimum mix was 10% CBA, resulting in a 2% increase in compressive strength compared to the control mix after 56 days of curing. Additionally, the study evaluated the effects of sulfate and chloride on concrete. It was found that the mix with the burning treatment showed an overall increase in strength, while the flotation treatment did not reach the control mix's strength in any of the curing periods. Furthermore, the results demonstrated that CBA has significant potential as a cement replacement material, and the burning treatment showed improvement in concrete's overall properties compared to the raw material in terms of mechanical and chemical properties while reducing greenhouse gas emissions and enhancing the environment. Doi: 10.28991/CEJ-2024-010-04-08 Full Text: PDF
Pengaruh Model Project Based Learning Terhadap Literasi Sains Biologi Kelas X SMAN 7 Mataram Tahun Ajaran 2023/2024
Authors: Komalasari Baiq Resti , Setiadi Dadi , Kusuma Anindita Suliya Hangesti Mandra , Jufri A. Wahab 
Published: May 2024

Literasi sains merupakan suatu hal yang sangat penting untuk meningkatkan pemahaman siswa terhadap apa yang mereka pelajari terutama biologi. Tujuan penelitian ini untuk mengetahui pengaruh model projectbased learning terhadap literasi sains siswa biologi kelas X SMAN 7 Mataram. Metode quasi eksperimen dan Nonrandomaized Control Group Desigin digunakan dalam penelitian ini dengan pendekatan kuantitatif. Populasi penelitian ini adalah kelas X SMAN 7 Mataram dan random sampling sebagai tehnik pengambilan sampel sehingga diperoleh empat kelas sebagai sampel dengan rincian kelas XG dan XF sebagai kelompok eksperimen sedangkan XK dan XL sebagai kelompok kontrol. Intrumen yang digunakan ialah Questioning Skills, pengumpulan data literasi sains siswa dilakukan dengan pemberian soal pilihan ganda (multiple choice) kemudian dianalisis dengan anacova (analysis of covariance) pada taraf signifikasi 5% menggunakan program SPSS 21. Hasil uji hipotesis pada penelitian ini bahwa terdapat pengaruh model Project Based Learning terhadap kemampuan bertanya siswa biologi kelas X SMAN 7 Mataram.
E-COMMERCE RUMAH KOMERSIL GREEN CENTER PARK BERBASIS ANDROID
Authors: Sari Cezi Intan , Faradillah Faradillah , Dhamayanti Dhamayanti 
Published: May 2024

PT. Bangun Cipta Anugrah Abadi is a company that operates in the real estate sector and focuses on revenue and sales. PT. Bangun Cipta Anugrah Abadi is located in Ruko Perumnas Tl. Kelapa, Alang-Alang Lebar District, Palembang City. PT. Bangun Cipta Anugrah Abadi offers several housing products, including Green Center Park Housing located on Jalan Boulevard Citra Grand City No. 88, Alang-Alang Lebar Palembang. Currently, there is no system that helps customers easily place orders with booking agents without having to travel to the location. For this reason, an information system will be built for Android e-commerce of Commercial Homes based in Green Center Park using the Android Studio application, as a container for creating web services and facilities. MySQL database to create the database. Testing takes place using the black box method, including testing the admin system, users and the report printing process. From the test result, the feature menu in the green center park e-commerce application runs well and satisfies users in accordance with user expectations.
طريقة تايلور تجميعية ثنائية الابعاد
Authors: لمى طارق عباس  , د. زينب كمالي  
Published: May 2024

الهدف الرئيسي من البحث هو تقديم نهج عددي للحل العددي لمعادلات فولتيرا التكاملية ثنائية الأبعاد . خوارزمية تعتمد على استخدام كثيرات حدود تايلور لبناء حل توافقي لتقريب حل معادلتا فولتيرا المتكاملتان بعد ذلك ، تم تطويرها ونوضح أن هذه الخوارزمية متقاربة . اذ يتم تضمين بعض الأمثلة العددية لإثبات دقة الطريقة المقترحة .
تقدير معاملات نماذج انحدار شرائح الجزاء باستعمال طريقة (SOP)
Authors: م.م.سهاد احمد عبد الله  
Published: May 2024

تلعب تقنيات تحليل الانحدار اللامعلمي دوراً مركزياً في التحليل الإحصائي، حيث تعتبر طريقة انحدار شرائح الجزاء واحدة من أكثر الطرائق المستعملة حالياً لتمهيد البيانات، اذ يمكن من خلالها تقدير الدوال مباشرة من البيانات الصاخبة(التي تحتوي على أخطاء) أو الملوثة (noisy data) بدلاً من الاعتماد على نماذج معلمية محددة، وتعتمد طريقة التقدير المستعملة لملائمه نموذج انحدار شرائح الجزاء في الغالب على طرائق المربعات الصغرى (OLS)، والتي من المعروف أنها حساسة للمشاهدات غير النمطية (المتطرفة)، في هذا البحث سيتم تقدير نماذج انحدار شرائح الجزاء (P-spline) المضافة المعممة باستعمال طريقة فصل المصفوفات الدقيقة المتداخلة (SOP) المقترحة من قبل الباحث (Rodríguez)، واخرون في عام 2015، والتي تأخذ المشاهدات المتطرفة في الاعتبار، حيث يعتمد التقدير على التكافؤ بين (P-spline) والنماذج المختلطة الخطية، ويتم تقدير معلمات التباين ومعلمات التمهيد بناءً على طريقة الإمكان الاعظم المقيد (REML). ومن اهم الاستنتاجات التي تم التوصل اليها عدم الحاجة الى استعمال طرائق التحسين العددي، كما يمكن دمج طريقة (SOP) بسهولة في تقدير النماذج المختلطة المضافة المعممة (GAMM) مع مجموعات التأثيرات العشوائية المستقلة، فضلاً عن سرعة تطبيق طريقة (SOP) في تنفيذ العمليات الحسابية.
Korelasi antara Self-Regulated Learning dengan Kemampuan Pemahaman Matematis Mahasiswa
Authors: Ruswana Angra Meta , Zamnah Lala Nailah 
Published: May 2024

Penelitian ini dilatarbelakangi oleh kemampuan pemahaman matematis mahasiswa yang masih belum maksimal dan juga mahasiswa belum bisa mengatur diri dalam belajar terutama ketika menghadapi tugas sehingga berpengaruh terhadap self-regulated learning mahasiswa. Tujuan dari penelitian yang dilakukan adalah untuk menelaah dan mendeskripsikan korelasi antara self-regulated learning dengan kemampuan pemahaman matematis mahasiswa. Penelitian dilaksanakan di Program Studi Pendidikan Matematika Universitas Galuh pada mahasiswa tingkat I Tahun Akademik 2017/2018. Data hasil penelitian diperoleh dari instrumen tes kemampuan pemahaman matematis dan angket skala self-regulated learning. Analisis data yang digunakan adalah analisis korelasi dengan menggunakan korelasi product moment. Berdasarkan hasil penelitian, pengolahan data, analisis data dan pengujian hipotesis diperoleh kesimpulan bahwa terdapat korelasi antara self-regulated learning dengan kemampuan pemahaman matematis mahasiswa.

This research was conducted based on the consideration of low mathematical understanding ability and their awareness in accomplishing their assignments. These obstacles influence their self-regulated learning. This study aimed to investigate and to describe the correlation between self-regulated learning with mathematical understanding ability. This study was conducted in the mathematics education program at Galuh University. The population is the first year of students in the academic year 2017/2018. The data was obtained from tests and questionnaires dealing with self-regulated learning. The research design was used in correlation with the Pearson’s product moment analysis. The result showed that there is a positive correlation between self-regulated and mathematical understanding ability.
Meningkatkan Pemahaman Konsep Matematika tentang Sifat-Sifat Bangun Ruang Sederhana melalui Contextual Teaching and Learning
Authors: Sipayung Asiroha 
Published: May 2024

Penelitian ini bertujuan untuk mengetahui pemahaman siswa terhadap konsep matematika tentang sifat-sifat bangun ruang melalui penerapan pendekatan Contextual Teaching and Learning. Metode yang digunakan adalah Penelitian Tindakan Kelas dan subjeknya adalah siswa kelas IV yang berjumlah 30 siswa. Hasil penelitian pada siklus I pertemuan 1 nilai rata-rata mencapai 62,00 sedangkan pada siklus I pertemuan 2 nilai rata-rata meningkat menjadi 67,50, siklus II pertemuan 1 76,33 dan siklus II pertemuan 2 82,00. Kesimpulan dari penelitian adalah pembelajaran dengan menerapkan pendekatan CTL dapat meningkatkan pemahaman konsep siswa di kelas IV. Ketuntasan belajar siswa pada siklus I hanya mencapai 13 orang atau 43,33% dan yang belum tuntas belajarnya mencapai 17 orang atau 56,67 %. Namun, pada siklus I pertemuan 2 ketuntasan belajar mencapai 16 orang atau 53,33% dan yang belum tuntas belajarnya 14 orang atau 46,67%. Untuk siklus II pertemuan 1 yang tuntas 22 orang atau 73,33% sedangkan yang belum tuntas 8 orang atau 26,67% dan untuk siklus II pertemuan 2 siswa yang tuntas 26 orang 86,67% dan yang belum tuntas 4 orang atau 13,33%.
This study aims to determine students' understanding of mathematical concepts about the nature of space building through the application of the Contextual Teaching and Learning approach. The method used is Class Action Research and the subject is 30 fourth-grade students. The results of this research in the first cycle of meeting 1 average score reached 62.00 while in the first cycle ofmeeting 2 average score increased to 67.50, in cycle II meeting 1 76.33, and in cycle II meeting 2 82.00. The study concludes that learning by applying the CTL approach can improve students' conceptual understanding in grade IV. Students' completeness of learning in the first cycle only reached 13 people or 43.33% and the unfinished study reached 17 people or 56.67%. However, in the first cycle, the second meeting of learning completeness reached 16 people or 53.33% and 14 people had not yet completed their study or 46.67%. For cycle II meeting 1 completed 22 people or 73.33% while for the unfinished 8 people or 26.67% and cycle II meeting 2 students completed 26 people 86.67% and the unfinished 4 people or 13.33 %.
Pengembangan Soal Matematika Realistik Berdasarkan Kerangka Teori Program for International Students Assesment
Authors: Mangelep Navel Oktaviandy , Kaunang Derel Filandy 
Published: May 2024

Penelitian ini bertujuan untuk mengembangkan soal matematika realistik berdasarkan kerangka teori PISA yang valid, praktis, dan efektif. Metode yang digunakan dalam penelitian ini adalah metode penelitian pengembangan dengan tipe penelitian formatif yang meliputi tahap preliminary (analisis dan pendesainan) serta tahap prototyping (evaluasi formatif). Teknik pengumpulan data berupa dokumentasi, walk through, tes, observasi, dan wawancara. Sedangkan teknik analisis data yang digunakan adalah analisis data deskriptif kualitatif. Kevalidan dipenuhi berdasarkan validasi pakar secara kualitatif dari aspek konten, konstruk, dan bahasa. Kriteria praktis dipenuhi apabila memenuhi dua hal yaitu; (1) para pakar menyatakan bahwa apa yang dikembangakan dapat diterapkan, dan (2) kenyataan menunjukkan bahwa apa yang dikembangkan tersebut dapat diterapkan. Hasil yang diperoleh adalah telah dihasilkan prototipe soal matematika realistik berdasarkan kerangka teori PISA yang valid dan praktis dan efektif. Selain itu, hasil tes menunjukkan bahwa kemampuan literasi matematika siswa kelas IX di SMP Negeri 3 Tondano masih tergolong rendah dengan rata-rata nilai 19,6.
This study aims to develop a valid, practical, and effective realistic mathematics problem based on the PISA theoretical framework. The method is developmental research with a formative research type which includes the preliminary stage (analysis and design) and the prototyping stage (formative evaluation). Data collection techniques in the form of documentation, walk-throughs, tests, observations, and interviews. The data analysis technique used is qualitative descriptive data analysis. Validity is fulfilled based on qualitative expert validation from aspects of content, constructs, and language. Practical criteria are fulfilled when fulfilling two things, namely; (1) the experts state that what is developed can be applied, and (2) the fact shows that what is developed can be applied. The results obtained are a realistic mathematical problem prototype based on the PISA theoretical framework that is valid, practical, and effective. In addition, the test results show that the mathematics literacy skills of grade IX students at SMP Negeri 3 Tondano are still relatively low with an average score of 19.6.
TRABALHANDO A DANÇA NO ESTÁGIO SUPERVISIONADO : UM RELATO DE EXPERIÊNCIA
Authors: Farias de Almeida Ana Paula , Lopes de Souza Adrielle , Lopes de Souza Adriano 
Published: May 2024

O presente estudo tem como objetivo relatar a experiência pedagógica com o conteúdo Dança durante o período do Estágio Curricular Supervisionado em Educação Física no Ensino Fundamental II, da Universidade Federal do Norte do Tocantins, na cidade de Tocantinópolis (TO). Trata-se de um relato de experiência, de cunho qualitativo descritivo, com o uso da autonarrativa. A análise do recorte empírico foi organizada em seis etapas, quais sejam: 1- Contextualização da Problemática; 2- Fase do planejamento/preparação; 3- Aulas teóricas; 4- Atividades práticas; 5- Ensaios das coreografias; 6- Momento da culminância. Os resultados da experiência apontaram que apesar dos desafios para ministrar a Dança ao longo do bimestre, sobretudo, em virtude da resistência por parte dos alunos do sexo masculino, é possível e necessário trabalhar com tal conteúdo nas aulas de Educação Física, incluindo aspetos de natureza teórica e prática, tal como o evento de dança realizado na escola.
أثر تمرينات تورو مقترحة لتطوير مهارتي المناولة القصيرة والاخماد للاعبي كرة القدم بعمر (15-17) سنة
Authors: Lec. Dr. Aban Abdul Karim Mezher  
Published: May 2024

هدف البحث في التعرف على تأثير تمرينات التورو المقترحة في تطوير بعض المناولة القصيرة والاخماد بكرة القدم، واستعمل الباحث المنهج التجريبي بتصميم المجموعتين المتكافئتين لعينة البحث البالغ عددها(24)لاعب من فريقي نادي بابل للموسم(2022-2023) بأعمار (15-17) سنة من مجتمع البحث الأصلي البالغ (30) لاعب وقسمت عينة بالتساوي على مجموعتين إحداها تجريبية والأخرى ضابطة، واستعمل الباحث ادوات مساعدة والأجهزة الملائمة لأجراء الاختبارات الخاصة بمتغيرات البحث، فضلاً عن تنفيذ تمرينات المقترحة وأجريت تجربة استطلاعية مصغرة على عينة من طلاب المرحلة الثانية بلغ عددهم(6) لاعبين، وبعد إجراء الاختبارات القبلية وتنفيذ مفردات التمرينات الخاصة بمعدل اللعب لمدة(4) أسابيع وبواقع(3) وحدات تعليمية وبعدد كلي(12) وحداة، وبعدها أجريت الاختبارات البعدية للتوافق الحركي و دقة التهديف بكرة القدم تمثل ، وبعد استخراج البيانات ومعالجتها إحصائيا ومن ثم عرضها وتحليلها ومناقشتها اعتمادا على المصادر العلمية ذات العلاقة، توصل الباحث إلى استنتاجات عدة من أهمها تم التوصل إلى فاعلية التمرينات التورو المقترحة في تطور المناولة القصية والاخماد للاعبين، وفي ضوء هذه الاستنتاجات أوصى الباحث بضرورة التأكيد على استعمال التمرينات التعليمية المقترحة في الوحدات التعليمية لكرة القدم لهذه الفئة.
Genetic diversity in maize at germination and seedling stages under simulated drought conditions
Authors: Mannan Md Abdul , Begum Ferdousi 
Published: May 2024

Ninety seven maize (Zea mays) genotypes were evaluated for germination and early seedling characters under PEG6000 (8%) induced drought stress to identify drought tolerant genotypes. Descriptive statistics for percentage of seed germination and abnormal seedling, shoot length, root length, and shoot dry weight, root dry weight, seedling length, seedling dry weight, and vigor index revealed significant variation among the genotypes studied. The percentage of germination and abnormal seedlings varied greatly among the genotypes. The first and second principal components (PC) of PCA results accounted for 73.15 and 26.85% of the total variation of maize genotypes, respectively. The first PC variation consisted primarily of relative seedling shoot dry weight and relative seedling root dry weight. Cluster analysis grouped the genotypes into four clusters. Cluster III genotypes performed better in terms of relative shoot dry weight, relative root dry weight, and number of abnormal seedlings, indicating drought tolerance. Very poorly performance was shown by genotypes in cluster IV, whereas moderately performance was shown by genotypes in cluster II and I. The clusters differed significantly from one another, according to D2 and multivariate analysis. Thirty six genotypes viz. BD-814, BD-810, BD-812, BD-821, BD-815, BD-10015, BD-10238, CML-552, BD-822, BD-826, CML-341, CML-555, CML-591, CML-523, CML-564, BD-817, BD-10018, BD-10240, CML-577, CML-342, CML-556, BD-837, CML-544, BD-827, BD-806, BD-835, BD-840, BD-842, BD-10010, CML-562, BD-10239, BD-10016, CML-593, CML-568 and BD-10234 demonstrated relatively drought tolerance during the germination and early seedling stages might be used in future breeding program.
Ann. Bangladesh Agric. (2023) 27 (2): 19-30
Screening drought-tolerant bread wheat genotypes using yield-based stress indices
Authors: Ahmed Sheikh Faruk , Nazran Anika , Ghosh Totan Kumar , Ahmed Jalal Uddin , Mohi Ud Din Mohammed 
Published: May 2024

Global wheat (Triticum aestivum L.) productivity suffers severely from drought stress. Exploiting natural variation in drought tolerance among genotypes offers a promising avenue to counter yield losses and breed superior varieties. As yield is the key trait in wheat breeding, selecting genotypes based on both yield and drought tolerance indices remain a viable strategy. To identify tolerant genotypes using yield and yield-based indices, a comprehensive investigation was conducted in a factorial fashion of 56 wheat genotypes under two water regimes (control and drought) over two distinct growing years. This approach employed a split-plot design to ensure the statistical robustness of the results. Drought stress significantly reduced grain yield regardless of genotype or growing season. Strong correlations were observed between yields and yield-based drought tolerance indices, with most associations being strongly positive for both control and drought-stressed conditions. Both hierarchical cluster analysis and principal component analysis produced well-correlated results, revealing three distinct genotypic clusters: 6 tolerant and high-yield, 31 mid-tolerant, and 19 susceptible and low-yield genotypes. Statistical analysis showed that eight drought tolerance indices, viz. stress tolerance index (STI), modified stress tolerance index (mSTI), mean productivity (MP), geometric mean productivity (GMP), harmonic mean index (HMI), relative efficiency index (REI), relative decrease in yield (RDY), and superiority index (Pi) effectively distinguished the genotypic clusters, indicating their usefulness in selecting drought-tolerant and high-yielding wheat genotypes. The genotypes from the tolerant cluster: BARI Gom 33, BARI Gom 21, BAW-1147, BD-9910, BD-600, and BD-9889 exhibited better yield protection under drought stress compared to the other genotypes, demonstrating their potential for cultivation in water-deficit environments.
Ann. Bangladesh Agric. (2023) 27 (2): 41-58
Performance of sunflower at different pruning regimes in Acacia albida based agroforestry system
Authors: Khatun Shima , Sarmin Noor Shaila , Miah Md Main Uddin , Hoque Md Azizul , Parvin Shohana , Mondal Satyen 
Published: May 2024

A study was conducted in albida (Acacia albida) based agroforestry research field of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) from November/2020-March/2021 to evaluate the performance of sunflower at different light intensity created by pruning off the albida canopy at different levels. The experiment was set up in a single-factor Randomized Complete Block Design with three replications. Five different treatments of the experiment were as follows; T1: albida tree (no pruning) T2: albida tree (25% pruning), T3: albida (50% pruning, T4: albida (75% pruning) and T5: sunflower sole cropping in open field. The results revealed that T1 treatment produced the tallest plant (100.72cm) followed by T2 (97.48cm) while the treatment T5 produced the shortest (72.95cm) plant. The fresh weight (81.67g) and dried weight (13.95g) of sunflower leaves were found maximum in T4 and the minimum fresh weight (53.48g) and dry weight (8.34g) were recorded in T1 treatment. The highest CGR (1.169mg/cm2/day) and RGR 66.58 (mg/g/day) values were found in T5 and was not significant with T4. The yield parameters of sunflower such as head diameter (15cm) and 1000 seeds weight (43.34g) were found maximum in T5 (open field) which was statistically similar to that of T4 treatment. The T5 yielded the highest (1.13t/ha) sunflower seeds followed by T4 (1.09t/ha). The study indicated that sunflower can be grown successfully under the albida tree canopy with 75% trimming.
Ann. Bangladesh Agric. 27(2): 119-128