bluuebunny/crossref_metadata_2025_split huggingface dataset:
Calculation of Wooden Bridge Beams, Reinforced with Carbon Fiber Tape, with Cyclic Effects
Authors: Хошимова Ф.Ф. , Панфилов Д.В. , Поликутин А.Э. 
Published: September 2023

Постановка задачи. Проводится теоретическое исследование армированного и неармированного лентой из углеродного волокна деревянного мостового бруса при динамических воздействиях. Результаты. Представлена методика расчета деревянного мостового бруса, армированного лентой из углеродного волокна, при динамических нагрузках. Также выполнено теоретическое исследование работы деревянного бруса при циклических воздействиях. Определены геометрические характеристики мостового деревянного бруса, нормативное давление на ось вагонов, максимальное и минимальное давление на брус от одного колеса, коэффициент асимметрии цикла, период колебания (круговая, техническая частота и амплитуда колебания). Выводы. Теоретическое исследование было выполнено для установления новых зависимостей и свойств воздействия динамической нагрузки на деревянный брус, армированный углеродной лентой. Из полученных данных можно сделать вывод, что углеродная лента, используемая в качестве арматуры, значительно повышает выносливость деревянного мостового бруса на циклические воздействия.
Statement of the problem. A theoretical study of reinforced and non-reinforced carbon fiber tape wooden bridge beams under dynamic influences is carried out. Results. A method for calculating a wooden bridge beam reinforced with a carbon fiber ribbon under dynamic loads is presented. A theoretical study of the work of a wooden beam under cyclic influences was also carried out. The geometric characteristics of the wooden bridge beam, the normative pressure on the axle of wagons, the maximum and minimum pressure on the beam from one wheel, the coefficient of asymmetry of the cycle, the oscillation period (circular, technical frequency and amplitude of oscillation) are determined. Conclusions. A theoretical study was carried out to establish new dependencies and properties of the impact of dynamic load on a wooden beam reinforced with carbon tape. Based on the obtained data, it can be concluded that the carbon tape used as reinforcement significantly increases the endurance of a wooden bridge beam to cyclic impacts.
Methods of Work Organization on Complex Restoration Capital Construction Projects
Authors: Емельянов Д.И. , Понявина Н.А. , Клоков И.А. 
Published: September 2023

Постановка задачи. В ходе специальной военной операции на Украине многие здания были разрушены. Также с высокой долей вероятности могли подвергнуться разрушению производственные мощности, которые генерируют строительные материалы. В связи с этим необходимо создать методику, которая позволит еще на стадии планирования сократить издержки производства и избежать простоев в ходе выполнения строительно-монтажных работ за счет рационального распределения работ и ресурсов во времени. Результаты.Предложена методика восстановления, которая позволяет производить совмещение обследования зданий, анализа результатов обследований с последующим точечным выбором мероприятий по восстановлению объектов (ремонта, реконструкции, реставрации) и оптимизации календарного плана с помощью использования матриц коэффициентов совмещения с учетом факта ограничения материальных ресурсов в местах восстановления. Выводы. Предложенная методика позволяет учесть в себе все ограничивающие факторы, которые возникают в процессе строительства, ремонта или реконструкции.
Statement of the problem. During a special military operation in Ukraine, a lot of buildings were destroyed. Also, with a high degree of probability, the production facilities that generate construction materials could be destroyed. In this regard, it is necessary to create a methodology that will allow, even at the planning stage, to reduce production costs and avoid downtime during construction and setup work due to the rational allocation of work and resources over time. Results. The method of restoration is proposed, which allows combining the survey of buildings, analysis of survey results, followed by a point selection of measures for the restoration of objects (repair, reconstruction, restoration) and optimization of the calendar plan by using matrices of combination coefficients, taking into account the fact of limited material resources in the places of restoration. Conclusions. The proposed methodology enables one to take into account all the limiting factors that arise in the process of construction, repair or reconstruction.
Primary student teachers' teaching-learning conceptions, attitudes and self-efficacy beliefs toward science teaching
Authors: Ecevit Tuğba , Kingir Sevgi 
Published: September 2023

Science education plays an important role at primary school level. Primary school teachers are the first to introduce science to students. Teaching-learning conceptions, attitudes and perceived self-efficacy of teachers towards science teaching are influential on pupils’ science learning. The aim of this study was to investigate primary student teachers’ (PSTs’) teaching-learning conceptions, attitudes, and self-efficacy beliefs toward science teaching. The sample consisted of 231 PSTs from a public university in Turkey. The Attitude toward Science Teaching Scale, Science Teaching Self-Efficacy Belief Instrument, and Teaching-Learning Conceptions Questionnaire were used for data collection. Descriptive statistics, multivariate analysis of variance, and Pearson correlation analysis were utilized for analyzing the data. Results revealed that PSTs exhibited a constructivist teaching-learning approach rather than a traditional teachinglearning approach. PSTs’ mean scores on science teaching self-efficacy beliefs and attitudes toward science teaching were found higher than the average. Females were more dominant than males in terms of the teaching-learning approach. Moreover, it was found out that the female’s science teaching self-efficacy beliefs and outcome expectancy were higher than the males.
Impact of formative assessment based on feedback loop model on high school students’ conceptual understanding and engagement with physics
Authors: Ole Faith Celeste , Gallos Marilou R. 
Published: September 2023

This study examined the effects of using the Feedback Loop Model (FLM) in Grade 12 Senior High School (SHS) Physics classes. Using a one-group pretest-posttest design, 58 students identified from a simple random sampling method were tested for their conceptual understanding and engagement with in kinematics. The results showed that students’ engagement had been significantly affected when their physics teachers practised formative assessment (FA) using the Feedback Loop Model in their synchronous classes. These implications were supported by both quantitative and qualitative data in the study. With the use of Wilcoxon Signed-rank Test, statistical differences were obtained in the four dimensions of the engagement tool in terms of agentic engagement (Z = 3.37, p < .001), behavioural engagement (Z = 4.82, p < .001), emotional engagement (Z = 4.06, p < .001), and cognitive engagement (Z = 4.40, p < .001). Meanwhile, for students’ conceptual understanding, the difference between their pre-and posttests mean scores in kinematics revealed a significant difference (t (57) = 17.76, p < .001), suggesting that teachers’ classroom practices towards FA using FLM affected students’ level of conceptual understanding in Kinematics. Employing Cohen’s d to measure its practical significance also showed a large effect (d = 2.83). Thus, it is recommended that implementing FA based on FLM could significantly impact the engagement and learning process of high school physics students.
PENGARUH METODE LATIHAN DRIBBLE SHOOT DAN THROUGH PASS SHOOT TERHADAP KEMAMPUAN SHOOTING DALAM SEPAKBOLA (Study Eksperimen pada SSB Safo Jomblo Slogohimo Usia 14-16 Tahun 2022)
Authors: Andibowo Teguh , Sholeh Muchhamad , Teguh Prakoso Erik , Firman Adityatama  , Budiyono Kodrad 
Published: September 2023

ABSTRAK
Tujuan penelitian untuk mengetahui Perbedaan Pengaruh Metode Latihan Drible Shoot dan Through Pass Shoot Terhadap Kemampuan Shooting Dalam Sepakbola Pada Anak Usia 14-16 Tahun SSB Safo Jomblo Slogohimo Tahun 2022, dan jika ada perbedaan maka untuk mengetahui mana yang lebih baik antara kemampuan Shooting antara latihan Shooting dengan Drible Shoot dan Through Pass Shoot terhadap kemampuan Shooting dalam sepakbola pada Anak Usia 14-16 Tahun SSB Safo Jomblo Slogohimo tahun 2022.
Sampel penelitian adalah Anak Usia 14-16 Tahun SSB Safo Jomblo Slogohimoyang berjumlah 30 orang. Pengambilan sampel menggunakan teknik porpusive sampling. Variabel penelitian ini yaitu hasil peningkatan kemampuan Shootingdengan metode latihan Shooting dengan Drible Shoot dan Through Pass Shoot sebagai variabel bebas kemampuan Shooting sebagai variabel terikat. Rancangan penelitian menggunakan pretest-posttest design. Menggunakan tes keterampilan hasil menendang bola dari plooyer, (1970 : 152-157). Metode analisis data penelitian menggunakan rumus t-test yang diperhitungkan menggunakan rumus pendek.
Hasil analisis data maka simpulan diperoleh: (1) Ada perbedaan pengaruh latihan Shooting dengan Drible Shoot dan Through Pass Shoot terhadap kemampuan Shooting dalam permainan sepakbola pada Anak Usia 14-16 Tahun SSB Safo Jomblo Slogohimotahun 2022. Hal ini dibuktikan dari hasil penghitungan tes akhir masing-masing kelompok yaitu thitung = 6,3494 lebih kecil dari pada ttabel = 2,145 dengan taraf signifikasi 5%. (2) Latihan Drible Shoot lebih baik pengaruhnya dari pada Through Pass Shoot terhadap kemampuan Shooting dalam permainan sepakbola pada Anak Usia 14-16 Tahun SSB Safo Jomblo Slogohimo tahun 2022. Berdasarkan persentase kemampuan Shooting menunjukkan bahwa kelompok 1 (kelompok yang mendapat perlakuan dengan metode latihan Drible Shooting) adalah 10,341% > kelompok 2 (kelompok yang mendapat perlakuan latihan Through Pass Shoot) adalah 9,852%.
Kata Kunci: Dribble Shoot, Through Pass Shoot, Kemampuan Shooting, Sepakbola
UPAYA MENINGKATKAN MOTIVASI DAN HASIL BELAJAR LOMPAT JAUH GAYA JONGKOK DENGAN MODIFIKASI ALAT BANTU PEMBELAJARAN PENDIDIKAN JASMANI PADA SISWA KELAS IV SEMESTER II SD NEGERI SAREN 1 KALIJAMBE KABUPATEN SRAGEN TAHUN PELAJARAN 2018/2019
Authors: Achmad Yani Fajar 
Published: September 2023

ABSTRAK

Tujuan penelitian ini adalah untuk Meningkatkan Motivasi dan hasil belajar lompat jauh gaya jongkok dengan modifikasi alat bantu pembelajaran pendidikan jasmani pada siswa kelas 4 Semester II SD Negeri Saren 1 Kalijambe Kabupaten Sragen tahun pelajaran 2018/2019.
Penelitian ini menggunakan metode Penelitian Tindakan Kelas (PTK). Sumber data dalam penelitian ini seluruh siswa kelas IV Semester II Sekolah Dasar Negeri Saren 1 Kalijambe Sragen tahun pelajaran 2018/2019. Subjek penelitian ini adalah siswa kelas 4 Semester II Sekolah Dasar Negeri Saren 1 Kalijambe Sragen tahun pelajaran 2018/2019 berjumlah 22 orang yang terbagi atas 7 siswa putra dan 15 siswa putri. Teknik pengumpulan data adalah melalui tes dan pengukuran kemampuan lompat jauh gaya jongkok dan observasi dari proses kegiatan pembelajaran. Teknik analisis data yang digunakan dalam penelitian ini adalah secara deskriptif yang didasarkan pada analisis kualitatif. Prosedur penelitian ini meliputi planning, acting, observasi dan reflecting.
Berdasarkan hasil penelitian diperoleh simpulan bahwa dengan modifikasi alat bantu pembelajaran pendidikan jasmani dapat Meningkatkan Motivasi dan kemampuan lompat jauh gaya jongkok pada siswa kelas IV Semester II SD Negeri Saren 1 Kalijambe Kabupaten Sragen tahun pelajaran 2018/2019. Dari hasil analisis yang diperoleh terdapat peningkatan dari kondisi awal ke siklus I dan siklus II, baik dari peningkatan kemampuan lompat jauh gaya jongkok maupun nilai ketuntasan hasil belajar. Kemampuan lompat jauh gaya jongkok pada kondisi awal (1.89 %), siklus I (2.37 %) dan siklus II (2.48 %), sehingga peningkatan dari kondisi awal ke siklus II sebesar (0,59 %).
Kata Kunci: Motivasi dan Hasil Belajar Lompat Jauh gaya jongkok dengan modifikasi alat bantu pembelajaran
PERBEDAAN PENGARUH LATIHAN SHOOTING METODE DRILL DAN SIRKUIT TERHADAP KETEPATAN SHOOTING KEGAWANG DALAM PERMAINAN SEPAKBOLA PADA SISWA PUTRA SSB PERMATA UTAMA JATI SUKOHARJO USIA 14 -16 TAHUN, TAHUN 2022
Authors: Herywansyah  , Hartini  , Indira Siwi Sujadi  
Published: September 2023

ABSTRAK
Tujuan penelitian untuk mengetahui Perbedaan Pengaruh Latihan Metode Drill Dan Sirkuit Terhadap Ketepatan shoting Kegawang Dalam Permainan Sepakbola Pada Siswa Putra SSB Permata Utama Jati Sukoharjo Usia 14 -16 Tahun, Tahun 2022, dan jika ada perbedaan maka untuk mengetahui mana yang lebih baik antara Latihan Shooting Metode Drill Dan Sirkuit Terhadap Ketepatan Shooting Kegawang Dalam Permainan Sepakbola Pada Siswa Putra SSB Permata Utama Jati Sukoharjo Usia 14 -16 Tahun, Tahun 2022.
Sampel penelitian adalah Siswa Putra SSB Permata Utama Jati Sukoharjo Usia 14 -16 Tahun dengan jumlah 30 siswa. Pengambilan sampel menggunakan teknik random sampling. Variabel penelitian ini yaitu hasil kemampuan dengan Latihan Metode Drill Dan Sirkuit sebagai variabel bebas serta hasil kemampuan variabel terikat. Rancangan penelitian menggunakan pretest-posttest design. Tes untuk mengetahui kemampuan menggunakan tes kemampuan menggunakan petunjuk pelaksanaan tes dari Nur Hasan (2001: 157). Metode analisis data penelitian menggunakan rumus t-test yang diperhitungkan menggunakan rumus pendek.
Hasil analisis data maka simpulan diperoleh: (1) Ada Perbedaan Pengaruh Metode Latihan Drill Dan Sirkuit Terhadap Kemampuan Shooting kegawang Dalam Permainan Sepakbola Pada Siswa Putra SSB Permata Utama Jati Sukoharjo Usia 14 -16 Tahun, Tahun 2022. Hal ini dibuktikan dari hasil penghitungan tes akhir masing-masing kelompok yaitu thitung = 3.263 lebih besar dari pada ttabel = 2,145 dengan taraf signifikasi 5%. (2) Latihan kegawang metode Drill lebih baik pengaruhnya dari pada metode Sirkuit Terhadap Kemampuan kegawang Dalam Permainan Sepakbola Pada Siswa Putra SSB Permata Utama Jati Sukoharjo Usia 14 -16 Tahun, Tahun 2022. Berdasarkan persentase peningkatan kemampuan kegawang dalam permainan Sepak Bola menunjukkan bahwa kelompok 2 (kelompok yang mendapat Drill) adalah 21 > 1 (kelompok yang mendapat perlakuan dengan Latihan Sirkuit) adalah 16.340% .
Kata Kunci : Latihan Sirkuit, Latihan Drill, Ketepatan Bola, Sepakbola
Intereligious dialogue between Islam & Judaism
Authors: Qureshi Dr. Abdul Basit 
Published: September 2023

This paper discusses the potential for religious dialogue between Islam and Judaism, drawing on certain points where it becomes challenging. It is argued that Judaism while having belief as Chosen people of God does not look as harmonious with Islam and hence puts the engagement in interfaith dialogue into question. Owing to the fact that, it neither regards Islam as a new religion but rather as a continuation of Judaism, nor regards the Messenger of Allah, ? as a new prophet because he borrowed all teachings from the Jewish books. Additionally, they despise Islam since the Qur'an provides a critical account of Jewish beliefs to actualize them. Islam, on the other hand, considers the Torah and Talmud being heavenly revealed texts. In this prospect, several shreds of evidences from the Quran & Sunnah are presented to establish that Islam not only recognizes religious pluralism but also respects freedom of religiosity. After carrying out an analytical and critical study, it can be concluded that Judaism does not seem as felicitated to engage in religious dialogue with Islam. Even so, Islam's doors remain open to create mutual coexistence and a peaceful environment.
Design Basis Considerations for the Design of Floating Offshore Wind Turbines
Authors: Gudmestad Ove Tobias , Schnepf Anja 
Published: September 2023

The wind farm owner/operator must prepare a Design Basis to facilitate the design of floating offshore wind turbines. The Design Basis is crucial to ensure that the individual elements of the wind farm are designed according to the relevant standards and the actual site conditions. In case of under-design, systematic failures can occur across the wind turbines, which can result in progressive damage to the turbines of the wind farm. This paper focuses on the safety and overall economics, including limiting potential excessive costs of heavy maintenance caused by damage due to under-design. Thus, this paper highlights critical aspects of particular importance to be implemented in the Design Basis document. Meeting all required constraints for developing offshore wind farms in deep water may result in higher costs than initially anticipated. Nonetheless, a realistic cost estimation for all phases of the project, engineering, construction, transport, and installation on site, remains essential for all engineering projects, including those involving renewable energy.
The Dusty Red Supergiant Progenitor and the Local Environment of the Type II SN 2023ixf in M101
Authors: Niu Zexi , Sun Ning-Chen , Maund Justyn R. , Zhang Yu , Zhao Ruining , Liu Jifeng 
Published: September 2023

Abstract
As one of the closest supernovae (SNe) in the last decade, SN 2023ixf is an unprecedented target to investigate the progenitor star that exploded. However, there is still significant uncertainty in the reported progenitor properties. In this work, we present a detailed study of SN 2023ixf’s progenitor with two independent analyses. We first modeled its spectral energy distribution (SED) based on Hubble Space Telescope optical, Spitzer mid-infrared (IR), and ground-based near-IR data. We find that stellar pulsation and circumstellar extinction have great impacts on SED fitting, and the result suggests a relatively massive red supergiant surrounded by C-rich dust with an initial mass of 16.2–17.4 M
⊙. The corresponding rate of mass loss occurring at least 3 yr before the SN explosion is about 2 × 10−4
M
⊙ yr−1. We also derived the star formation history of the SN environment based on resolved stellar populations, and the most recent star-forming epoch corresponds to a progenitor initial mass of 17–19 M
⊙, in agreement with that from our SED fitting. Therefore, we conclude that the progenitor of SN 2023ixf is close to the high-mass end for Type II SN progenitors.
The Collisional Evolution of the Primordial Kuiper Belt, Its Destabilized Population, and the Trojan Asteroids
Authors: Bottke William F. , Vokrouhlický David , Marschall Raphael , Nesvorný David , Morbidelli Alessandro , Deienno Rogerio , Marchi Simone , Dones Luke , Levison Harold F. 
Published: September 2023

Abstract
The tumultuous early era of outer solar system evolution culminated when Neptune migrated across the primordial Kuiper Belt (PKB) and triggered a dynamical instability among the giant planets. This event led to the ejection of ∼99.9% of the PKB (here called the destabilized population), heavy bombardment of the giant planet satellites, and the capture of Jupiter’s Trojans. While this scenario has been widely tested using dynamical models, there have been fewer investigations into how the PKB, its destabilized population, and the Trojans experienced collisional evolution. Here we examined this issue for all three populations with the code Boulder. Our constraints included the size–frequency distributions (SFDs) of the Trojan asteroids and craters on the giant planet satellites. Using this combination, we solved for the unknown disruption law affecting bodies in these populations. The weakest ones, from an impact energy per mass perspective, were diameter D ∼ 20 m. Overall, collisional evolution produces a power-law-like shape for multikilometer Trojans and a wavy-shaped SFD in the PKB and destabilized populations. The latter can explain (i) the shapes of the ancient and younger crater SFDs observed on the giant planet satellites, (ii) the shapes of the Jupiter family and long-period comet SFDs, which experienced different degrees of collision evolution, and (iii) the present-day impact frequency of superbolides on Jupiter and smaller projectiles on Saturn’s rings. Our model results also indicate that many observed comets, the majority which are D < 10 km, are likely to be gravitational aggregates formed by large-scale collision events.
Origin-of-life Molecules in the Atmosphere after Big Impacts on the Early Earth
Authors: Wogan Nicholas F. , Catling David C. , Zahnle Kevin J. , Lupu Roxana 
Published: September 2023

Abstract
The origin of life on Earth would benefit from a prebiotic atmosphere that produced nitriles, like HCN, which enable ribonucleotide synthesis. However, geochemical evidence suggests that Hadean air was relatively oxidizing with negligible photochemical production of prebiotic molecules. These paradoxes are resolved by iron-rich asteroid impacts that transiently reduced the entire atmosphere, allowing nitriles to form in subsequent photochemistry. Here we investigate impact-generated reducing atmospheres using new time-dependent, coupled atmospheric chemistry and climate models that account for gas-phase reactions and surface catalysis. The resulting H2-, CH4-, and NH3-rich atmospheres persist for millions of years, until the hydrogen escapes to space. The HCN and HCCCN production and rainout to the surface can reach 109 molecules cm−2 s−1 in hazy atmospheres with a mole ratio of CH4/CO2 > 0.1. Smaller CH4/CO2 ratios produce HCN rainout rates of <105 molecules cm−2 s−1 and negligible HCCCN. The minimum impactor mass that creates atmospheric CH4/CO2 > 0.1 is 4 × 1020–5 × 1021 kg (570–1330 km diameter), depending on how efficiently iron reacts with a steam atmosphere, the extent of atmospheric equilibration with an impact-induced melt pond, and the surface area of nickel that catalyzes CH4 production. Alternatively, if steam permeates and deeply oxidizes the crust, impactors of ∼1020 kg could be effective. Atmospheres with copious nitriles have >360 K surface temperatures, perhaps posing a challenge for RNA longevity, although cloud albedo can produce cooler climates. Regardless, postimpact cyanide can be stockpiled and used in prebiotic schemes after hydrogen has escaped to space.
Robot-in-the-loop: Prototyping robotic digitisation at the Natural History Museum
Authors: Scott Ben , Salili-James Arianna , Smith Vincent 
Published: September 2023

The Natural History Museum, London (NHM) is home to an impressive collection of over 80 million specimens, of which just 5.5 million have been digitised. Like all similar collections, digitisation of these specimens is very labour intensive, requiring time-consuming manual handling. Each specimen is extracted from its curatorial unit, placed for imaging, labels are manually manipulated, and then returned to storage. Thanks to the NHM’s team of digitisers, workflows are becoming more efficient as they are refined. However, many of these workflows are highly repetitive and ideally suited to automation. The museum is now exploring integrating robots into the digitisation process.
The NHM has purchased a Techman TM5 900 robotic arm, equipped with integrated Artificial Intelligence (AI) software and additional features such as custom grippers and a 3D scanner. This robotic arm combines advanced imaging technologies, machine learning algorithms, and robotic manipulation capabilities to capture high-quality specimen data, making it possible to digitise vast collections efficiently (Fig. 1).
We showcase the NHM's application of robotics for digitisation, outlining the use cases developed for implementation and the prototypical workflows already in place at the museum. We will explore our invasive and non-invasive digitisation experiments, the many challenges, and the initial results of our early experiments with this transformative technology.