bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGEMBANGAN ELEKTRONIK LEMBAR KERJA PESERTA DIDIK (E-LKPD) BERBASIS LIVEWORKSHEET MATERI KONSEP MOL PADA SISWA KELAS X MIPA MAN 3 PONTIANAK
Authors: Teresa Teresa , Kurniati Tuti , Fadhilah Raudhatul 
Published: October 2022

Pandemi COVID-19 mengakibatkan transformasi pembelajaran dari tatap muka menjadi dalam jaringan. Perubahan ini tidak hanya dalam hal model pembelajaran, tetapi juga media pembelajaran. Namun kenyataannya, guru cenderung belum siap menyiapkan media pembelajaran yang sesuai, terutama pada sekolah yang memiliki keterbatasan teknologi. Selama pembelajaran daring, guru tetap menggunakan media pembelajaran cetak, salah satunya lembar kerja peserta didik (LKPD). LKPD cetak yang diberikan oleh guru belum bisa membuat siswa paham akan materi konsep mol dikarenakan hanya berisi penjelasan materi yang disampaikan melalui tulisan. Oleh karena itu diperlukan media pembelajaran yang inovatif dan interaktif yang mampu membantu siswa memahami materi konsep mol. Penelitian ini bertujuan menghasilkan produk E-LKPD berbasis liveworksheet yang inovatif, interaktif, dan layak digunakan. Metode penelitian yang digunakan adalah 3D yaitu, define, design, dan develop. Penelitian ini dilakukan di MAN 3 Pontianak menggunakan 6 sampel uji coba lapangan awal dan 32 sampel uji coba lapangan utama. Alat pengumpul data diperoleh dari angket validasi media, angket respon siswa serta soal pretest dan posttest. Hasil Validasi ahli materi dan media menunjukkan bahwa e-LKPD berbasis worksheet yang dikembangkan sangat valid dengan persentase kevalidan masing-masing sebesar 93,75% dan 83,33%. Analisis N-Gain menunjukkan bahwa e-LKPD berbasis worksheet memiliki efektifitas yang tinggi dalam meningkatkan hasil belajar siswa dengan nilai N-Gain pada uji coba lapangan awal dan utama secara berturut-turut sebesar 0,61 dan 0,72. Hasil analisis kepraktisan menunjukkan bahwa e-LKPD sangat praktis dengan persentase kepraktisan sebesar 85%. Dengan demikian, e-LKPD berbasis liveworksheet yang dikembangkan layak digunakan dalam pembelajaran konsep mol.
Authors: Qomari Mochammad Nor , Lestari Sri Ayu , Fauziyah Nur 
Published: October 2022

This study aims to reveal the learning trajectory of differentiation-based learning based on differences in learning styles. This research was conducted at SD Muhammadiyah 1 GKB involving 29 class III subjects. Design This research uses design research by Gravemeijer and Cobb which goes through 3 stages: (1) preparing for the experiment, starting with preparing a lesson plan, an instrument that is appropriate to the learning style of students; (2) experimental design is related to teaching experiment and collecting data. In the visual learning style, students are able to relate their understanding to what they see about the material around flat shapes. While in the auditory learning style, students are able to understand the video delivered and answer the questions that have been heard. It's just that on questions related to everyday life, students are still wrong in doing calculations and wrong in understanding the concept. Meanwhile, the kinesthetic learning style of students is very enthusiastic in making toy cars and giving a little color to the windshield; and (3) retrospective analysis, from the introduction to the conclusion, the provision of special stimulation was in accordance with the learning styles of students. Students are also able to construct their knowledge well about the circumference of a flat shape either square, rectangle and polygon.
Keywords: Differentiated learning, learning style, learning trajectory, two-dimentional figure.
Pemanfaatan Energi Angin akibat Laju Kendaraan Berbasis Pengembangan Inovasi Teknologi Hybrid Vertical Axis Wind Turbine sebagai Penghasil Listrik untuk Mewujudkan Ketahanan Energi Nasional
Authors: Gonzaga Marcellinus , Manda Argamanda , Pawirodiharjo Listriyanto , Hb Sukarjo 
Published: October 2022

<p>Penelitian ini merupakan penelitian lanjutan dari penelitian awal berjudul “Pemanfaatan Energi Angin dari Laju Kendaraan Berbasis Kincir Vertikal sebagai Penghasil Listrik untuk Penerangan Lampu Jalan”. Pada penelitian ini telah dilakukan serangkaian pengembangan dan pembaharuan baik dari segi penentuan daerah potensial maupun segi desain konstruksi <em>hybrid va </em>(<em>vertical axis</em>) <em>wind turbine</em>. Pembaharuan dan pengembangan dilakukan guna meningkatkan kesiapan implementasi <em>hybrid va wind turbine</em> di seluruh daerah efektif di Indonesia. Pada penelitian sebelumnya kelengkungan atau radius kincir belum dapat diketahui. Untuk mencari tahu kelengkungan kincir dengan efektivitas rotasi tertinggi maka dilakukan perancangan miniatur kincir vertikal dengan rasio 1:5 terhadap ukuran kincir sumbu vertikal reguler sesungguhnya. Peningkatan desain dengan memperhatikan aspek keselamatan pengguna jalan yang melintas sangat perlu dilakukan. Penggunaan material atau bahan yang dapat merefleksikan cahaya dari lampu kendaraan pada malam hari yang dilekatkan di konstruksi <em>hybrid va wind turbine </em>merupakan salah satu metode untuk meningkatkan aspek keselamatan. Pengukuran terhadap lebar bagian tengah kedua jalur jalan yang berlawan arah sebagai lokasi pemasangan <em>hybrid va wind turbine</em> juga dilakukan dengan mempertimbangkan aspek keselamatan pengendara. Pemberian toleransi jarak antara bagian sisi terluar kincir dan bagian terluar lajur jalan sangat perlu dilakukan untuk mencegah terjadinya kerusakan pada konstruksi <em>hybrid va wind turbine</em> serta demi keselamatan pengendara yang melintas. Pada jalan-jalan dengan lebar bagian tengah antara kedua jalur jalan yang berukuran di bawah 2meter (&lt;2m) tidak dapat diterapkan <em>hybrid va wind turbine</em> reguler, sehingga penerapan <em>hybrid va wind turbine</em> minimalis merupakan solusi untuk daerah tersebut. Penentuan daerah efektif untuk implementasi pada penelitian ini dilakukan dengan pengukuran terhadap aspek-aspek potensi yang dimiliki oleh jalan di antaranya; rata-rata intensitas kendaraan yang melintas, kecepatan rata-rata kendaraan yang melintas, kecepatan angin rata-rata yang tersedia akibat laju kendaraan yang melintas, lebar bagian tengah antara kedua jalur jalan yang berlawanan arah, kondisi geografis jalan, serta potensi timbulnya kepadatan. Jalan tol Semarang-Solo memiliki total panjang jalan 75,7km dan dalam penelitian ini telah dipilih 3 titik awal yang diprediksi dan diukur aspek-aspek kelayakannya untuk dilakukan implementasi <em>hybrid va wind turbine</em> pada daerah tersebut.</p><p><strong><em>Kata kunci:</em></strong><em> Hybrid va wind turbine, Peningkatan desain, Aspek keselamatan, Aspek-aspek potensi jalan.</em></p><p> </p>
Paradoxos na Cidade do Amor
Authors: Bezerra Deisiane da Silva , Rodrigues Yuri Franklin dos Santos 
Published: October 2022

Este trabalho tem como objetivo estabelecer uma descrição e análise das formas de representação empreendidas em um plano histórico e memorial de construção de Palmeira dos Índios, localizada no semiárido de Alagoas, enquanto uma cidade imaginada, bem como, compreender as distorções nas concepções sobre a fundação da cidade e sobre os indígenas Xukuru-Kariri, forjadas a partir de símbolos fabricados. Para tanto, utilizamos as fontes documentais disponíveis no acervo do Grupo de Pesquisas em História Indígena de Alagoas (GPHIAL). Nos fundamentamos no modelo micro-histórico proposto por Ginzburg (2007) e Levi (2000); e em Certeau (2015), para compreender as dimensões da operação historiográfica. Realizamos também uma pesquisa bibliográfica em trabalhos de cunho histórico-antropológico, buscando entender os processos históricos fundantes da cidade de Palmeira dos Índios; textos que nos auxiliaram em questões teóricas inerentes à pesquisa historiográfica. Nesta perspectiva, nossa abordagem teve como foco a construção identitária; a fabricação de símbolos e disputas de memórias; as representações sociais e a elaboração de verdades “absolutas”.
Academic Document Authentication using Elliptic Curve Digital Signature Algorithm and QR Code
Authors: Wellem Theophilus , Nataliani Yessica , Iriani Ade 
Published: October 2022

Paper-based documents or printed documents such as recommendation letters, academic transcripts, and diplomas are prone to forgery. Several methods have been used to protect them, such as watermarking, security holograms, or using paper with specific security features. This paper presents a document authentication system that utilizes QR code and ECDSA as the digital signature algorithm to protect this kind of document from counterfeiting. A digital signature is a well-known technique in modern cryptography used for providing data integrity and authentication. The idea proposed herein is to put a QR code in the printed documents where the QR code includes a digital signature. The signature can later be authenticated using the proposed system by uploading the document for authentication or scanning the document's QR code. The proposed system is particularly developed for digital signature generation and verification of students' final project approval documents as the case study. In traditional settings, the approval form is typically signed directly by the student's advisor dan co-advisor using handwritten signatures. However, using the conventional handwritten signature, the signature on the approval form can be falsified. Therefore, a digital signature generation and verification system is implemented herein to avoid handwritten signature falsification. The advisors can use this system to sign the approval form using a digital signature instead of a handwritten one. The signature is stored in a QR code and is generated using ECDSA with SHA-256 as the hash function. The proposed system is evaluated using documents (i.e., approval forms) with genuine and forged QR codes.Â The evaluation results showed that the system could verify the authenticity of the approval forms, which contain genuine QR codes. The approval forms that contained forged QR codes were correctly identified.
Intra-frame Based Video Compression Using Deep Convolutional Neural Network (DCNN)
Authors: Putra Arief Bramanto Wicaksono , Gaffar Achmad Fanany Onnilita , Sumadi Muhammad Taufiq , Setiawati Lisa 
Published: October 2022

In principle, a video codec is built by implementing various algorithms and their development. The next generation of codecs involves more artificial intelligence applications and their development. DCNN (Deep Convolutional Neural Network) is a multi-layer NN concept with a deep learning approach in the field of artificial intelligence development. This study has proposed a DCNN with three hidden layers for intra-frame-based video compression. DCT and fractal methods were used to compare the performance of the proposed method.Â The training image (obtained from the average of all down-sampled frames) is divided into several square blocks using the square block shift operation until all parts of the image are fulfilled. All pixels in each block act as input data patterns. After the training process, the trained proposed DCNN was then used to construct the feature and sub-feature image obtained through the max function operation in the feature bank and sub-feature bank. These feature and sub-feature images were then a spatial redundancy minimizer with specific manipulation techniques and simultaneously a quantizer without converting the frame's pixels to a bit-stream. The result of this process is a compressed image. Experiments on the entire dataset resulted in AAPR (Average Approximate Performance Ratio) of 147.71%, or an average of 1.5 times better than other methods. For further studies, the performance improvement of the proposed DCNN is performed by modifying its structure so that the output is direct in the form of feature and sub-feature images. Another way is to combine it with the DCT or fractal method to improve the performance of the result.
Comparative Dissolution Kinetics of Several Multisource Thioctic Acid Products
Authors: Vasilenko G. F. , Krasnykh L. M. , Zhuravleva M. V. , Prokofiev A. B. , Gorodetskaya G. I. , Smirnov V. V. , Bunyatyan N. D. 
Published: October 2022

The relationship between dissolution and bioavailability is an example of the interdependency between the quality of a medicinal product and its safety and efficacy. The uniqueness of thioctic acid is that it can exist in an oxidised and a reduced form, showing lipophilic (lipoic acid) and hydrophilic (dihydrolipoic acid) properties. Bioavailability studies of thioctic acid are necessary to evaluate the expected therapeutic effect and mitigate side effects of the medicinal product.The aim of the study was to carry out equivalence dissolution testing to compare the release of thioctic acid from medicinal products produced by several manufacturers.Materials and methods: the study used a reference medicinal product and three multisource medicinal products by different manufacturers; more specifically, film-coated tablets containing 600 mg of thioctic acid. The experiment was carried out in dissolution media at pH of 6.8±0.05 and 1.2±0.05. Statistical analysis was performed by calculating the average amounts of the substance dissolved, the standard deviation (SD), and the relative standard deviation (RSD, %) using Microsoft Office Excel 2007.Results: The authors chose the testing conditions (dissolution media pH values of 6.8±0.05 and 1.2±0.05) taking into account the nature and characteristics of thioctic acid. The comparison of thioctic acid release profiles based on the calculation of the similarity factor (f2) showed that the dissolution profiles of multisource medicinal products 2 and 3 at pH 6.8 were equivalent to that of the reference medicinal product (more than 85% of the active pharmaceutical ingredient released within 15 minutes) and the dissolution profile of multisource medicinal product 1 was not equivalent to it (with f2 of 28).Conclusions: the established differences in the rate and degree of active ingredient release from the studied medicinal products may indicate possible differences in their pharmacological effectiveness in vivo.
Juvenile resistance of barleys from the East Asian center of crop origin and domestication to powdery mildew
Authors: Abdullaev R. A. , Anisimova I. N. , Kovaleva O. N. , Radchenko E. E. 
Published: October 2022

Background. A significant reduction in the yield of barley may be provoked by powdery mildew (causative agent: Blumeria graminis (DC.) Golovin ex Speer f. sp. hordei Marchal). A vast majority of cultivars approved for use in Russia are susceptible to the pathogen. Including genotypes protected by previously unused resistance genes into breeding practice is necessary to ensure the national food security. Barley landraces could become a fairly rich source of replenishment for the bank of effective pathogen resistance genes.Materials and methods. The study covered 950 barley accessions from the East Asian center of crop origin and domestication: 449 accessions from Japan, 313 from China, 173 from Mongolia, and 15 from Nepal. The experiments were carried out on young plants in a climatic chamber under artificial infection conditions. The northwestern (Pushkin, St. Petersburg) population of B. graminis served as an inoculum. Plant resistance was assessed using a scoring scale. The resistance of the selected forms was assessed twice.Results and conclusions. Significant variability of barley accessions from the countries of East Asia in their resistance to powdery mildew was observed. Symptoms of the disease were not found on plants of 16 studied forms. Weak or moderate development of the B. graminis mycelium was recorded for 21 accessions. Twenty-seven accessions were heterogeneous in the studied trait. Various levels of resistance were identified in 64 studied accessions (6.73%), among which 44 represented cultivars and breeding lines, and 20 were landraces. The percentage of accessions susceptible to the studied population of the pathogen was 93.27%.
<i>Solanum nigrum</i> L. is a potato spindle tuber viroid reservoir
Authors: Mironenko N. V. , Khiutti A. V. , Kyrova E. I. , Lashina N. M. , Afanasenko O. S. 
Published: October 2022

Background. Among the weeds of the Solanaceae family, a potential viroid infection reservoir, black nightshade (Solanum nigrum L.), is ubiquitous in Russia.Materials and methods. Molecular diagnostics of the viroid was performed using RT-PCR with the P3/P4 primers specific for PSTVd and 6Pospi F/R specific for the Pospiviroidae family of viroids. The amplification products were cloned and sequenced, and the nucleotide sequences were deposited in the GenBank database.Results. RT-PCR showed that 80–100% of plants were infected with PSTVd. The cDNA amplicons of two plants from Nizhny Novgorod (Sn1 and Sn2) and one plant from Tula Province (Sn3) were cloned (3 clones each) and sequenced. An analysis of the nucleotide variability in the clones revealed significant genetic differences between the PSTVd strains, independent of the geographical origin. Mutations U120C and U192C, compared with the reference strain VP35 (LC523658), were found in all 9 clones. The Sn1 isolate was close to the “potato” VP35 isolate and differed from it only by three mutations. The Sn2 isolate was represented by three identical clones and differed from VP35 by nine mutations, while Sn3 had 22 mutations in the region of 49–310 nucleotide positions in total for three clones. After artificial infection of healthy S. nigrum plants in a greenhouse, the presence of PSTVd in infected plants was confirmed and it was proved that the viroid was transmitted by seeds to plants of the next generation.Conclusion. For the first time in externally healthy plants of S. nigrum, widely distributed in the potato fields of Russia (Nizhny Novgorod and Tula Province), the potato spindle tuber viroid, PSTVd, was detected. It was proved that the viroid was preserved in the seeds of S. nigrum and transmitted to their progeny. Genetic heterogeneity of PSTVd strains from S. nigrum plants was found. Two mutations, U120C and U192C, were common for all tested clones of PSTVd strains.
Studying grain color diversity in the barley collection of VIR
Authors: Glagoleva A. Y. , Novokreschenov L. A. , Shoeva O. Y. , Kovaleva O. N. , Khlestkina E. K. 
Published: October 2022

Background. Dark color of barley grain (Hordeum vulgare L.) can be caused by the synthesis and accumulation of two types of polyphenolic pigments – anthocyanins and melanins, which perform important functions in plant life, participating in the regulation of growth and development, and protecting plants from adverse environmental conditions. The aim of this study was to investigate the diversity of barley in the VIR collection in the context of grain color.Materials and methods. To analyze the pigment composition of the grain, 150 barley accessions with colored grains were selected from the VIR collection. Anthocyanins and melanins in grain husk were identified using qualitative reactions.Results and discussion. It was shown that in 60% of the accessions the dark color of their grain was induced by independent accumulation of melanin, while the accessions characterized by accumulation of only anthocyanins, and those with combined accumulation of anthocyanins and melanins, were 14.6% and 14%, respectively. For 11.3% of the accessions the presence of anthocyanins and melanins in grain husk was not found; their pigmentation could presumably be associated with an increased content of other polyphenolic pigments – proanthocyanidins. Accessions with melanin in grain predominated in all identified geographic groups, while other types of pigmentation were most evenly represented in the regions with the widest genetic diversity of barleys – Africa, East Asia, and the Middle East.Conclusion. Dark pigmentation of barley grain was shown to be mainly associated with the accumulation of melanin, and this type of pigmentation prevails in all geographical regions identified. The results obtained made it possible to describe the barley collection more fully and expand the possibilities of its utilization.
Peningkatan keaktifan Belajar Siswa Pada Pembelajaran IPA Menggunakan Pendekatan Contextual Teaching Learning (CTL)
Authors: Widiasih Wiwik , Rizal Muhammad Syahrul , Ananda Rizki 
Published: October 2022

Permasalahan dalam penelitian ini adalah keaktifan belajar siswa IPA kelas VI SDN 035 Indrapuri Kecamatan Tapung Kabupaten Kampar masih tergolong rendah. Penelitian ini bertujuan untuk meningkatkan keaktifan belajar siswa pada mata pelajaran IPA kelas VI, melalui penerapan pendekatan Contextual Teaching Learning (CTL). Metode yang digunakan yaitu Penelitian Tindakan Kelas (PTK) yang terdiri dari dua siklus. Instrumen penelitian yang digunakan adalah lembar observasi aktivitas guru, dan lembar observasi keaktifan belajar siswa. Hasil penelitian menunjukkan adanya peningkatan keaktifan belajar siswa melalui penerapan pendekatan CTL. Hal ini dibuktikan dengan hasil lembar observasi keaktifan belajar siswa pada siklus 1 sebesar 79,60%, kemudian pada siklus 2 meningkat sebesar 80,48% yang berada pada kategori aktif. Kesimpulan penelitian bahwa penerapan pendekatan CTL dapat meningkatkan keaktifan belajar siswa, sehingga berdampak pada peningkatan keaktifan belajar siswa pada pembelajaran IPA kelas VI SDN 035 Indrapuri. Adapun saran yang diberikan yaitu:1. Siswa hendaknya lebih aktif dan kreatif dalam pembelajaran. 2. Guru hendaknya menerapkan pendekatan CTL pada mata pelajaran lain. 3. Peneliti selanjutnya dapat meningkatkan pelaksanaan pembelajaran dengan lebih maksimal lagi
Unsung Heroines of Indian Freedom Struggle: Immortal Contributions from Mortal Women
Authors: Ramaswamy Dr Mahesh , S ASHA 
Published: October 2022

<p> India is celebrating its 75th year of independence under <strong>"Azadi ke Amrit Mahotsav"</strong>, a Pan-Indian initiative. Literature and research pertaining to the Indian freedom movement are copious. But the silent and unnoticed fact here is that the influential players are only mentioned while others are relegated to the background. Indians could achieve their freedom only through a mass movement, but no effort was put into excavating the efforts of ordinary players, particularly women. With the growth in history and historiography, new paradigms are paving the way for fresh research. Here, an attempt has been made in that direction. </p>
Sexual Health Code Mobile Application to Reduce Transmission of Sexual Diseases
Authors: uludag kadir 
Published: October 2022

<p>Sexual diseases are widespread, although many people are unaware of their high prevalence and potential risks of being infected by sexual diseases such as human papillomavirus, human immunodeficiency virus, syphilis, and gonococcal infection. Furthermore, due to the associated social stigma with sexual disorders, individuals are inclined not to reveal their previous or current sexual diseases. Therefore, sexual diseases slowly and insidiously spread among healthy individuals. Prevention methods have been developed to increase awareness of these diseases. However, further measurements are necessary to reduce the spread of sexual disorders. Thus, we aim to discuss the potential benefits and risks of sexual health code application to record previous sexual partners without revealing their identities. Such applications may also notify last sexual partners in case of present sexual diseases. Thereby, it may increase testing for sexual diseases in those individuals with sexual diseases. If they were not appropriately tested, the application may have a notification that can only be removed after the sexual examination shows they do not have the contagious sexual disease. </p>