bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengaruh Penggunaan e-Modul Mate Pengaruh Penggunaan e-Modul Materi Senyawa Hidrokarbon dalam Pembelajaran Mandiri Kelas XI di SMA Negeri 3 Palangka Raya Tahun Pelajaran 2020/2021
Authors: Kartikasari Santi 
Published: October 2022

Abstract.
This study aims to (1) determine and describe the effect of the use of the e~Module of hydrocarbon compounds on the independent learning outcomes of class XI students of SMA Negeri 3 Palangka Raya, and (2) describe the student's response to the use of the e~Module of hydrocarbon compounds on student self-study outcomes. class XI SMA Negeri 3 Palangka Raya. This research is a quasi-experimental study, the sample of this research is 60 students, namely students in class XI~MIPA 1 and XI~MIPA 2 odd semesters for the academic year 2020/2021. This study uses a Posttest-Only Control Design. At the end of the lesson, the two sample classes were given a cognitive test using the same instrument and tested qualitatively and quantitatively. Data was collected by using multiple choice test method with five options. The test method was carried out to obtain the final score data after being treated in the quasi-experimental group and the control group. The hypothesis was tested using a t-test and was preceded by a prerequisite test which included a normality test and a homogeneity test, the student's response to the use of the e-module was quantified and the percentage calculated. The results showed that there was an effect of using e~Modul on the mastery of the concept of hydrocarbon compounds in SMA Negeri 3 Palangka Raya students with a significance level of 5% (thit 5.19 greater than the value of ttab = 2.05). The results of the student response analysis showed a positive response with an average value of 95.67%, which means that the e~Modul helps class XI students of SMA Negeri 3 Palangka Raya in understanding the concept of hydrocarbon compounds independently.
Keywords: e~Module of hydrocarbon compounds, independent study, learning outcomes.
KEMAMPUAN MEMAHAMI PERSAMAAN REAKSI KIMIA DI ERA PEMBELAJARAN DIGITAL PADA SISWA KELAS X MIPA SMAN 5 PALANGKA RAYA
Authors: Seliwati Seliwati 
Published: October 2022

Abstrak
Pembelajaran jarak jauh dilaksanakan dalam rangka mencegah penyebaran dan penularan COVID-19 di lingkungan satuan pendidikan. Kemendikbud telah mengambil kebijakan untuk menutup sekolah selama masa pandemi COVID-19. Untuk mengatasi permasalahan pembelajaran jarak jauh, guru harus menyiapkan rencana pelaksanaan pembelajaran jarak jauh menggunakan media pembelajaran digital. Penelitian ini bertujuan untuk mendeskripsikan kemampuan siswa kelas X MIPA SMA Negeri 5 Palangka Raya dalam memahami konsep persamaan reaksi kimia menggunakan media pembelajaran digital. Metode penelitian yang digunakan adalah metode deskriptif dengan subjek penelitian 136 siswa kelas X MIPA SMA Negeri 5 Palangka Raya tahun pelajaran 2020/2021. Instrumen menggunakan tes tertulis pilihan ganda dengan empat pilihan jawaban serta wawancara. Rerata persentase kemampuan siswa memahami konsep persamaan reaksi kimia pada indikator (1) menjelaskan pengertian persamaan reaksi kimia sebesar 62,5% ; (2) menentukan persamaan reaksi kimia dari zat-zat yang bereaksi 68,87%; (3) menentukan koefisien reaksi yang tepat untuk menyetarakan persamaan reaksi kimia 75%; (4) menentukan senyawa kimia dan koefisien reaksi yang tepat untuk melengkapi persamaan reaksi kimia 71,81%.
Artikel Pendidikan Kimia PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) BERBASIS INKUIRI TERBIMBING PADA MATERI HIDROLISIS GARAM UNTUK SISWA SMA
Authors: Ayu Ayu Apriani 
Published: October 2022

Abstrak

Penelitian ini merupakan R & D (Research and Development) yang bertujuan untuk mengetahui validitas dan respon peserta didik terhadap LKPD kimia berbasis inkuiri terbimbing pada materi hidrolisis garam. Prosedur pengembangan dari penelitian ini mengadopsi model ADDIE sampai tahap ketiga. Penelitian ini melibatkan tiga validator yaitu validator ahli media/desain, ahli bahasa, dan ahli materi. Subjek uji coba skala satu-satu dan uji coba skala kecil adalah peserta didik SMA Muhammadiyah 1 Palembang. Instrumen pengumpulan data menggunakan lembar validasi, angket respon peserta didik, dan pedoman wawancara. Hasil penelitian ini menunjukkan bahwa LKPD kimia berbasis inkuiri terbimbing pada materi hidrolisis garam memperoleh persentase dari ahli desain/media sebesar 96,42% dengan kategori sangat valid, ahli bahasa memperoleh persentase sebesar 100% dengan kategori sangat valid, dan ahli materi memperoleh persentase sebesar 87,4% dengan kategori sangat valid.Kata kunci: LKS, Inkuiri Terbimbing, Hidrolisis Garam, Deskriptif. Rata-rata persentase nilai dari ketiga validator yaitu 93,70% dengan kategori sangat valid. Respon peeserta didik terhadap LKPD kimia yang dikembangkan dapat dikategorikan sangat menarik, dimana pada uji coba skala satu-satu memperoleh persentase nilai sebesar 83,25% dengan kategori sangat menarik, pada uji coba skala kecil memperoleh persentase nilai sebesar 86,04% dan dinyatakan sangat menarik.
Mechanism of Rock Burst and Its Dynamic Control Measures in Extra-Thick Coal Seam Mining from below the Residual Coal Seam to below the Gob
Authors: Jia Chong , Lai Xingping , Cui Feng , Zhang Shuai , Sun Jingxuan , Tian Mengqi 
Published: October 2022

Abstract
In this paper, aiming at the mechanism and regulation of overburden breakage induced by mining from the residual coal seam to the mined-out area, taking Kuangou Coal Mine as the background, the mechanism of rock burst from the residual coal seam to the mined-out area was revealed through the laws of overburden breakage and its structural evolution, ground pressure appearance, and energy release. The impact risk area is determined by the comprehensive evaluation results of multimethod face impact risk. A roof pressure relief and impact prevention control method using large-diameter empty hole combined with advanced deep hole blasting was formed, and the field verification was completed. The research results show that an obvious inverted trapezoid structure is formed when the residual coal seam of the W1123 working face is mined to the working face under the gob, which is related to the energy release caused by the occurrence of periodic pressure and the rupture of the critical layer. The shock ground pressure of the working face predicted by the neural network is mainly weak shock and medium shock risk; the numerical simulation analysis shows that the shock hazard area of the W1123 face below the solid coal is mainly located in the lower part of the working face near the transportation roadway and the shock below the W1145 gob. The dangerous area is about 32~72 m away from the return air alley. Through the plastic zone distribution and the orthogonal test, the optimal pressure relief scheme for large-diameter holes is 12 m in depth, 300 mm in diameter, and 2 m in spacing. When the blasting angle is consistent with the overlying rock fracture angle obtained from the simulation experiment, a better pressure relief can be achieved. When the bursting angle is consistent with the simulated overburden rupture angle, it has a better pressure relief effect. The pressure relief and anti-scour control method of large-diameter holes combined with advanced deep hole blasting reduce the daily average vibration frequency, energy, incoming pressure, and step distance of working face mining. The safe and efficient mining has a certain reference effect.
The public debt crowding-in/out effects during the business cycle
Authors: Bentour El Mostafa 
Published: October 2022

Abstract
To explain why fiscal multipliers are weak in times of expansion and larger in times pf recession, this paper analyses the public debt effects on some macroeconomic and fiscal variables with relation to the business cycle. Using an SVAR on United States quarterly data over the period 1966–2019, we show that in times of expansion, public debt crowds out private investment, leading to a lower growth, while in times of recession the public debt effects on growth are positive, which may explain the smaller size of the fiscal multipliers in expansions and their larger size in recessions as revealed in the post-2008 crisis. The results also revealed that government expenditure has a positive but short-lived impact on economic growth. The policy implication is that fiscal stimulus effects are important in recessions but could take time to materialize, while such effects could be short-lived in expansions, which is something that should be considered by policy-makers in their spending decisions.
Estimating the economic value of hydropeaking externalities in regulated rivers
Authors: Ruokamo Enni , Juutinen Artti , Ashraf Faisal , Haghighi Ali Torabi , Hellsten Seppo , Huuki Hannu , Karhinen Santtu , Kopsakangas-Savolainen Maria , Marttila Hannu , Pongracz Eva , Romakkaniemi Atso , Vermaat Jan E. 
Published: October 2022

Abstract
Hydropower is a flexible form of electricity generation providing both baseload and balancing power to accommodate intermittent renewables in the energy mix. However, hydropower also generates various externalities. This study investigates individuals’ preferences for policies aiming to reduce short-term regulations (i.e., hydropeaking in regulated rivers) while accounting for associated externalities with a discrete choice experiment. This is the first valuation study focusing on hydropeaking that considers both negative and positive externalities. The results imply that most individuals prefer stronger restrictions on short-term regulations to mitigate local environmental impacts. Individuals especially value improvements in recreational use, fish stocks, and the ecological state. On the other hand, potential increases in CO2 emissions are linked with a clear disutility. The estimated benefits obtained from an improved state of the river environment due to such restrictions probably exceed the disutility caused by increased CO2 emissions. The results also reveal unobserved preference heterogeneity among individuals, which should be accounted for in the willingness-to-pay (WTP) estimation using a model specification with correlated utility coefficients. Overall, the findings can inform policy-makers and environmental managers on the economic value of hydropeaking externalities and further guide the sustainable management of rivers regulated for hydropower generation.
Spatial Spillover Effects of Agricultural Agglomeration on Agricultural Non-Point Source Pollution in the Yangtze River Basin of China
Authors: Zhu Yangyang , Yu Qiuyue , Huang Dayong 
Published: October 2022

Abstract
Studying the impact of agricultural agglomeration (AGG) on agricultural non-point source pollution (NPS) is important for reconciling the resource environment and agricultural economic growth.The paper is based on the panel data of 89 prefecture-level cities in the main agricultural production areas of the Yangtze River basin from 2000 to 2020, measuring the level of AGG and NPS emissions in each area and employing spatial analysis techniques and spatial econometric models to empirically investigate the spatial and temporal distribution characteristics and spatial spillover effects of AGG and NPS.The results show that there are differences in temporal changes, spatial distribution, spatial association and spatial evolutionary trends between AGG and agricultural surface pollution, and the changes in the upper, middle and lower basin show non-equilibrium characteristics;NPS has a positive spatial spillover effect, and AGG has a positive direct impact effect and a negative spatial spillover effect on NPS, and there are a differences in the direct impact effect and spatial spillover effect between upper, middle and lower basin;Agricultural production conditions and the share of livestock and poultry industry have a positive direct effect and a negative spatial spillover effect on NPS, while agricultural population size has a positive direct effect and spatial spillover effect;The urbanization rate exacerbates the emission of NPS, while the industrial structure reduces the emission of NPS, but neither has a spatial spillover effect.The fndings of this paper cannot only provide a theoretical basis and practice reference for NPS and AGG evaluation but also beneft more focused policy-making of the Green and sustainable development of agriculture in Yangtze River Basin.
Socio-economic factors strongly determine megafauna biomass in African savanna protected areas
Authors: Thornley Reece , Buitenwerf Robert , Vogel Susanne , Pearcy Ashley , Smit Izak , Hempson Gareth , Gaylard Angela , Chala Desalegn , Svenning Jens-Christian 
Published: October 2022

Abstract
The persistence of African megafauna (herbivores >10 kg) in savannas is at risk from anthropogenic pressures including land–use change, bush–meat hunting and poaching. The mitigation of these risks, while still ensuring socio-economic improvement, is a crucial challenge to megafauna conservation and sustainable development across Africa. Protected areas are designed to diminish these risks, yet evidence from individual protected areas and countries suggests that megafauna populations within protected areas are increasingly affected by negative human influence. However, on the continental scale, it remains unclear to what degree megafauna in African savanna protected areas are affected by human influences relative to natural drivers. We quantified the relative influence of human and natural drivers on biomass from 47 megafauna species, estimated from aerial surveys across 296 survey areas in 12 African countries, spanning 550,452 km2 of protected savanna. The Human Development Index (HDI) emerged as the strongest predictor of megafauna biomass within protected areas across Africa, exceeding the importance of the main natural drivers (natural savanna habitat, water availability) and other human–related drivers (roads, environmental governance, and livestock density). Importantly, our findings show that megafauna biomass is suppressed to <= 3600 kg km-2 at low HDI (0.50), compared to 6800 kg km-2 at higher HDI (> 0.50). This indicates that improving socioeconomic conditions surrounding savanna protected areas could substantially enhance megafauna conservation across the continent, while addressing numerous sustainable development goals for local communities.
Milling Force Prediction of Inclined Rib with Low Rigidity in Milling Process of Hollow Thin-Walled Structural Parts
Authors: Zhang Shengfang , Ma Jiaheng , Wang Shuai , Wang Ziguang , Ma Fujian , Sha Zhihua 
Published: October 2022

Abstract
In order to improve the prediction accuracy of low rigidity inclined rib milling force model in the milling process of hollow thin-walled structural parts, the static deformation of low rigidity inclined rib was solved by means of numerical analysis and finite element simulation method, moreover, the deformation mixed prediction model was established by combining General Regression Neural Network with Fruit Fly Optimization Algorithm and Cross Validation Algorithm to efficiently predict the dynamic deformation of low rigidity inclined rib under different parameters. Thereafter, based on this model, the dynamic feed per tooth solving model was established to predict the dynamic milling force, and it was verified by experiments. The results show that under the processing conditions of 6000r/min, 0.14mm/z and 4mm cutting width, the theoretical values of the maximum milling forces in X, Y, Z directions at the right diagonal rib position are 361N, 788N, 229N respectively, and the experimental values are 398N, 802N, 218N respectively. Under the processing conditions of 7000r/min, 0.14mm/z and 3.5mm cutting width, the theoretical values of the maximum milling forces in X, Y, Z directions at the right diagonal rib position are 361N, 788N, 229N respectively, and the experimental values are 398N, 802N, 218N respectively. The increase of cutting width leads to the increase of Y-direction force, besides, the increase of feed speed will lead to the increase of X-direction forces and Z-direction forces. The range of X-direction prediction error rate is 8.45% − 16.15%, Y-direction prediction error rate is 1.50% − 4.85%, Z-direction prediction error rate is 10.5% − 15.65%, and the milling force prediction error is kept below 16%.
Early Changes in Clinical and Laboratory Parameters in Patients Died of COVID-19
Authors: Bakhtiyarova K. S. , Papoyan A. O. , Alekseev A. V. , Vishnyakov D. S. , Grazhdankin A. A. , Gilyazova I. R. , Nasibullina A. Kh. , Kislitsyna M. V. , Vakhitova A. A. , Zolotukhin K. N. , Kabirov I. R. , Pavlov V. N. 
Published: October 2022

261,435,768 COVID-19 infections were detected worldwide, of them 5,207,634 deaths were registered. Identifying markers of the patient severity early in the course of the disease can facilitate the assessment of the risk of adverse outcome.The objective: To compare values of laboratory parameters and their changes during treatment of patients with a complicated course of COVID-19 infection.Subjects and Methods. 56 patients were included in the study, all of them were hospitalized to COVID Hospital of the Clinic of Bashkir State Medical University, Russian Ministry of Health, from September 30, 2021 to November 15, 2021, and their complicated course of the disease necessitated transfer to the intensive care unit (ICU). The laboratory evaluation included the following: a general blood and urine counts, blood chemistry including urea and creatinine, liver transaminases, and blood coagulogram (prothrombin time (PTT), prothrombin index (PTI), thrombin time, fibrinogen, and blood clotting time).Results. In the group of patients with a fatal outcome on the day of transfer to ICU, lymphocytopenia, eosinopenia, elevated values of creatinine, total bilirubin, transaminases, C-reactive protein, D-dimer, and ferritin were noted. Also on this day, microscopic hematuria, proteinuria and cylindruria were detected in the urine tests of most patients in this group during treatment.Conclusion. Critical deviations in the results of hematological and biochemical tests were revealed. Particular attention should be paid to such parameters as the level of erythrocytes, lymphocytes, eosinophils, glucose, urea, creatinine, total bilirubin, aspartate aminotransferase, alanine aminotransferase, creatine kinase, C-reactive protein, D-dimer, and ferritin.
Implementasi kebijakan keolahragaan dan peran pemangku kepentingan dalam peningkatan prestasi atlet
Authors: Sirait Juniar , Noer Khaerul Umam 
Published: October 2022

Keberhasilan dalam pencapaian peningkatan prestasi atlet tidak dapat dilepaskan dari kebijakan keolahragaan di suatu daerah. Tulisan ini berfokus pada bagaimana implementasi kebijakan keolahragaan dan bagaimana peran para pemangku kepentingan dalam upaya peningkatan prestasi atlet di Kota Tangerang Selatan. Dengan menggunakan metode penelitian kualitatif melalui pengamatan, wawancara dan diskusi kelompok terpumpun, ditemukan bahwa implementasi kebijakan keolahragaan oleh Dinas Pemuda dan Olahraga dan pemangku kepentingan lain belum berjalan secara optimal, antara lain terlihat dengan minimnya anggaran yang diberikan, kurangnya dukungan dari industri olahraga dalam peningkatan prestasi atlet, sehingga kegiatan keolahragaan belum berhasil secara signifikan terhadap peningkatan atlet-atlet berprestasi, untuk itu perlunya kerjasama dengan beberapa pihak yang terkait dalam peningkatan keolahragaan baik dari pendanaan ataupun sarana dan prasarana olahraga. The implementation of sports policies and the role of stakeholders in improving athlete achievement AbstractThe success in achieving athlete performance improvement cannot be separated from sports policies. This paper focuses on how the implementation of sports policies and how the role of stakeholders in efforts to improve athlete achievement in the City of Tangerang Selatan. By using qualitative research methods through observation, interviews, and group discussion, it was found that the implementation of sports policies by the Department of Youth and Sports and other stakeholders was not running optimally, among others evident from the lack of budget provided, the lack of support from the sports industry in improving performance athletes, so that sporting activities have not been significantly successful in increasing the achievement of athletes, for this reason, the need for cooperation with several parties involved in improving sports both from funding or sports facilities and infrastructure.
Survei aktivitas fisik untuk anak overweight di sekolah dasar
Authors: Primasoni Nawan 
Published: October 2022

Masalah overweight selalu meningkat dari tahun ke tahun. Penyakit noninfeksi (Non Communicable Diseases) yang sekarang ini banyak terjadi di negara-negara maju maupun negara-negara sedang berkembang diduga kuat diawali dengan kondisi overweight. Aktivitas fisik memegang peranan penting dalam menjaga komposisi tubuh anak. Aktivitas fisik akan memberikan banyak dampak bagi kesehatan. Overweight di usia muda akan berpengaruh diusia remaja jika tidak ditanggulangi. Guru Pendidikan jasmani olahraga dan kesehatan merupakan salah satu personil yang mempunyai peran penting dalam aktivitas fisik. Tujuan dari penelitian ini adalah untuk mengetahui gambaran kegiatan aktivitas fisik yang dilakukan di sekolah untuk anak-anak overweight. Pengumpulan data dengan cara wawancara para guru pendidikan jasmani olahraga dan kesehatan yang mengajar di sekolah dasar. Berdasarkan hasil penelitian dapat disimpulkan: (1) Pentingnya aktivitas fisik bagi anak-anak sekolah dasar , (2) Aktivitas fisik efisien untuk menurunkan berat badan, (3) Aktivias fisik berdampak pada usia remaja (4) Belum ada panduan aktivitas fisik di sekolah, (5) Perlu dibuat panduan aktivitas fisik untuk anak overweight, (6) Diperlukan aktivitas fisik untuk menurunkan berat badan berbasis bermain. Physical activity survey for overweight children in elementary school AbstractThe problem of overweight always increases from year to year. Non-communicable diseases that currently occur in many developed and developing countries are strongly suspected to begin with overweight conditions. Physical activity plays an important role in maintaining the child's body composition. Physical activity plays an important role in maintaining the child's body composition. Physical activity will have a lot of health impacts. Overweight at a young age will have an effect on adolescence if not addressed. Physical education teachers sports and health is one of the personnel who have an important role in physical activity. The purpose of this study is to find out an overview of physical activity performed in schools for overweight children. Data collection by interviewing physical education teachers of sports and health who teach in elementary schools. Based on the results of the study can be concluded: (1) The importance of physical activity for elementary school children, (2) efficient physical activity to lose weight, (3) Physical activity impacts on adolescence (4) there is no physical activity guide in school, (5) it is necessary to create physical activity guidelines for overweight children, (6) Physical activity is required to lose weight based on play.