bluuebunny/crossref_metadata_2025_split huggingface dataset:
STRATEGI PEMBELAJARAN KOOPERATIF MODEL STUDENT TEAMS ACHIEVEMENT DIVISION (STAD) TERHADAP HASIL BELAJAR BAHASA ARAB
Authors: Masyudi Masyudi 
Published: April 2019

Penelitian ini untuk menguji peredaan hasil belajar Bahasa Arab peserta didik yang dibelajarkan dengan strategi pembelajaran kooperatif model Student Teams Achievement Division (STAD) dan Strategi pembelajaran Ekspositori, perbedaan hasil belajar terhadap peserta didik berkemandirian tinggi dan rendah, dan pengaruh interaksi antara penggunaan strategi pembelajaran pembelajaran kooperatif model Student Teams Achievement Division (STAD) dan Strategi pembelajaran Ekspositori, Hasil dan kesimpulan penelitian diperoleh (1) Hasil belajar bahasa Arab dalam Strategi pembelajaran kooperatif model Student Teams Achievement Division (STAD) lebih tinggi dibanding hasil belajar dengan Strategi pembelajaran Ekspositori (2) Terdapat pengaruh interaksi antara Strategi pembelajaran dan Kemandirian Siswa peserta didik terhadap Hasil Belajar Bahasa Arab. (3) Terdapat Perbedaan hasil belajar bahasa Arab. Hasil Belajar Bahasa Arab peserta didik yang memiliki Kemandirian Tinggi yang dibelajarkan dengan Strategi Pembelajaran Kooperatif Model Student Team Achievement Division (STAD) lebih tinggi dibandingkan Hasil Belajar Bahasa Arab peserta didik yang dibelajarkan dengan Strategi pembelajaran Ekspositori.
PENINGKATAN HASIL BELAJAR PESERTA DIDIK TENTANG MEMBACA GAMBAR TEKNIK PROYEKSI ORTOGONAL MELALUI PENERAPAN MODEL PEMBELAJARAN KOPERATIF TIPE STUDENT TEAMS ACHIEVEMENT DIVISION (STAD) DI SMK NEGERI 2 KOTA BOGOR
Authors: . Sutirja 
Published: April 2019

Penelitian ini dilatarbelakangi bahwa kompetensi siswa dalam memahami mata pelajaran Gambar Teknik Mesin tersebut masih kurang. Siswa kurang memahami materi pelajaran, salah membaca gambar, salah dalam membuat ukuran gambar dan sebagainya. Kesalahan-kesalahan ini sangatlah fatal, karena gambar teknik sebagai bahasa teknik tidak bias digunakan sebagai alat komunikasi kerja dan hasil produk yang dibuat menjadi tidak sesuai dengan perencanaan. Penelitian ini bertujuan untuk mengetahui efektifitas penerapan model Student Teams Achievement Division (STAD) dalam meningkatkan hasil belajar peserta didik pada kompetensi membaca gambar teknik proyeksi orthogonal dikelas X MB semester 2 SMK Negeri 2 Bogor Tahun Pelajaran 2015/2016. Metode penelitian ini adalah penelitian tindakan kelas (Classroom Action Research) dengan model PTK yang dikembangkan oleh Stephen Kemmis dan Robbin Mc Taggart. Dalam pelaksanaan penelitian dan perbaikan ini yang menjadi fokus penelitian adalah peserta didik kelas X MB semester 2 SMK Negeri 2 Kota Bogor, dengan jumlah peserta didik sebanyak 32orang, yang terdiri dari 32 peserta didik laki-laki. Adapun mata pelajaran yang menjadi objek penelitian adalah Gambar Teknik Mesin dengan materi proyeksi ortogonal pada semester genap Tahun Pelajaran 2015/2016. Jika dilihat kenaikan hasil belajar dari pra siklus ke siklus I, terjadi kenaikan persentase ketuntasan sebesar 28,13% yaitu ketuntasan belajar pada pra siklus sebesar 46,87% menjadi 75%, sedangkan dari siklus 1 ke siklus II, terjadi peningkatan ketuntasan belajar sebesar 25% yaitu dari 75% menjadi 100%. terjadi kenaikan nilai rata-rata dari 68,13 menjadi 77,8 berarti kenaikan sebesar 9,67. Siswa yang memperoleh nilai mencapai KKM dari siklus 1 sebanyak 24 orang atau sebesar 75% menjadi 32 orang atau sebesar 100% yang berarti kenaikanya sebesar 25%. Siswa yang memperoleh nilai belum mencapai KKM pada siklus I sebanyak 8 orang atau sebesar 25%, berkurang menjadi sebanyak 0 orang atau 0%. Variasi model pembelajaran diperlukan oleh guru untuk meninghindari kejenuhan siswa. Salah satunya menerapkan model pembelajaran Kooperatif Tipe STAD.
Pengaruh Kinerja Keuangan dan Good Corporate Governance (GCG) Terhadap Nilai Perusahaan
Authors: Wahasusmiah Rolia 
Published: April 2019

This study aims to determine the effect of financial performance and good corporate governance (GCG) on the value of companies in manufacturing companies listed on the stock exchange Indonesia. The type of data used is secondary data in the form of annual report 2016. Population used in this study are all companies listed on the Indonesia Stock Exchange (BEI). This research uses purposive sampling method with total population of 144 companies and sample of 31 companies. The results show that simultaneously ROA, OPM, NPM, KM, and KI have a positive influence on firm value. While partially ROA have a positive influence on firm value. While OPM, NPM, KM, and KI have no positive influence on firm value).
Realistic On-the-fly Outcomes of Planetary Collisions: Machine Learning Applied to Simulations of Giant Impacts
Authors: Cambioni Saverio , Asphaug Erik , Emsenhuber Alexandre , Gabriel Travis S. J. , Furfaro Roberto , Schwartz Stephen R. 
Published: April 2019

Abstract
Planet formation simulations are capable of directly integrating the evolution of hundreds to thousands of planetary embryos and planetesimals as they accrete pairwise to become planets. In principle, these investigations allow us to better understand the final configuration and geochemistry of the terrestrial planets, and also to place our solar system in the context of other exosolar systems. While these simulations classically prescribe collisions to result in perfect mergers, recent computational advances have begun to allow for more complex outcomes to be implemented. Here we apply machine learning to a large but sparse database of giant impact studies, which allows us to streamline the simulations into a classifier of collision outcomes and a regressor of accretion efficiency. The classifier maps a four-dimensional (4D) parameter space (target mass, projectile-to-target mass ratio, impact velocity, impact angle) into the four major collision types: merger, graze-and-merge, hit-and-run, and disruption. The definition of the four regimes and their boundary is fully data-driven. The results do not suffer from any model assumption in the fitting. The classifier maps the structure of the parameter space and it provides insights into the outcome regimes. The regressor is a neural network that is trained to closely mimic the functional relationship between the 4D space of collision parameters, and a real-variable outcome, the mass of the largest remnant. This work is a prototype of a more complete surrogate model, that will be based on extended sets of simulations (big data), that will quickly and reliably predict specific collision outcomes for use in realistic N-body dynamical studies of planetary formation.
Implications of Philae Magnetometry Measurements at Comet 67P/Churyumov–Gerasimenko for the Nebular Field of the Outer Solar System
Authors: Biersteker John B. , Weiss Benjamin P. , Heinisch Philip , Herčik David , Glassmeier Karl-Heinz , Auster Hans-Ulrich 
Published: April 2019

Abstract
The remanent magnetization of solar system bodies reflects their accretion mechanism, the space environment in which they formed, and their subsequent geological evolution. In particular, it has been suggested that some primitive bodies may have formed large regions of coherent remanent magnetization as a consequence of their accretion in a background magnetic field. Measurements acquired by the Rosetta Magnetometer and Plasma Monitor have shown that comet 67P/Churyumov–Gerasimenko (67P) has a surface magnetic field of less than 0.9 nT. To constrain the spatial scale and intensity of remanent magnetization in 67P, we modeled its magnetic field assuming various characteristic spatial scales of uniform magnetization. We find that for regions of coherent magnetization with ≥10 cm radius, the specific magnetic moment is ≲5 × 10−6

. If 67P formed during the lifetime of the solar nebula and has not undergone significant subsequent collisional or aqueous alteration, this very low specific magnetization is inconsistent with its formation from the gentle gravitational collapse of a cloud of millimeter-sized pebbles in a background magnetic field ≳3 μT. Given the evidence from other Rosetta instruments that 67P formed by pebble-pile processes, this would indicate that the nebular magnetic field was ≲3 μT at 15–45 au from the young Sun. This constraint is consistent with theories of magnetically driven evolution of protoplanetary disks.
Multiple Spiral Arms in Protoplanetary Disks: Linear Theory
Authors: Miranda Ryan , Rafikov Roman R. 
Published: April 2019

Abstract
Recent observations of protoplanetary disks, as well as simulations of planet–disk interaction, have suggested that a single planet may excite multiple spiral arms in the disk, in contrast to the previous expectations based on linear theory (predicting a one-armed density wave). We reassess the origin of multiple arms in the framework of linear theory by solving for the global two-dimensional response of a nonbarotropic disk to an orbiting planet. We show that the formation of a secondary arm in the inner disk, at about half of the orbital radius of the planet, is a robust prediction of linear theory. This arm becomes stronger than the primary spiral at several tenths of the orbital radius of the planet. Several additional, weaker spiral arms may also form in the inner disk. On the contrary, a secondary spiral arm is unlikely to form in the outer disk. Our linear calculations, fully accounting for the global behavior of both the phases and amplitudes of perturbations, generally support the recently proposed WKB phase argument for the secondary arm origin (as caused by the intricacy of constructive interference of the azimuthal harmonics of the perturbation at different radii). We provide analytical arguments showing that the process of a single spiral wake splitting up into multiple arms is a generic linear outcome of wave propagation in differentially rotating disks. It is not unique to planet-driven waves and also occurs in linear calculations of spiral wakes freely propagating with no external torques. These results are relevant for understanding formation of multiple rings and gaps in protoplanetary disks.
Catalog of Decaying Kink Oscillations of Coronal Loops in the 24th Solar Cycle
Authors: Nechaeva Alena , Zimovets Ivan V. , Nakariakov V. M. , Goddard C. R. 
Published: April 2019

Abstract
A catalog of kink oscillations of solar coronal loops, which spans during almost all of solar cycle 24, is presented. The catalog is based on the observations made in the extreme ultraviolet band at 171 Å with Solar Dynamics Observatory/Atmospheric Imaging Assembly and includes parameters of 223 oscillating loops in 96 oscillation events. The catalog provides the information about the oscillation locations, time, and dates of the events, associated flare, initial displacement, oscillation period, exponential damping time, and apparent amplitude. The vast majority of the oscillation detections, 84%, were made in the loops situated near or off the solar limb. The oscillation periods are found to range from 1 to 28 minutes, with 74% of the events that have the period in the range of 2–10 minutes. About 90% of the oscillations have the apparent amplitude in the range of 1–10 Mm. The oscillating loop lengths are 70–600 Mm. The typical apparent amplitude is about 1% of the loop length. The oscillation period scales linearly with the loop length, and the damping time scales linearly with the period, which confirm previous findings. The oscillation quality factor scales with the amplitude to the power of minus 0.7. No statistically significant evidence of correlation was found between both the oscillation period and the mean sunspot number, and the loop length and mean sunspot number. The catalog provides the research community with the foundation for the further statistical study of kink oscillations and their use for coronal seismology.
L’innovation sociale ouverte comme stratégie de gestion de la baisse des subventions dans les organismes communautaires culturels
Authors: Houessou Benjamin , Tremblay Diane-Gabrielle 
Published: April 2019

Les organismes communautaires connaissent de plus en plus de difficultés financières de nos jours, entre autres, en raison de la diminution des subventions des financeurs publics ou privés. Dans ce contexte plusieurs de ces organismes abandonnent, modifient tout ou partie de leurs missions ou cherchent de nouvelles orientations. Face à cette problématique, la question principale qui guide notre recherche est la suivante : comment les organismes communautaires montréalais en lien avec leurs parties prenantes gèrent-ils la baisse de subventions ? Pour tenter de répondre à cette question, nous avons réalisé une recherche qualitative sur les orientations que prennent ces organismes dans ce contexte, et en particulier, sur ce que nous pouvons appeler l’émergence d’une orientation culturelle, créative ou artistique dans les organismes communautaires à Montréal. Les résultats montrent que l’innovation sociale ouverte est une stratégie majeure de gestion de la baisse des subventions dans ces organismes communautaires.
Dangerous degree forecast of soil loss on highway slopes in mountainous areas of the Yunnan–Guizhou Plateau (China) using the Revised Universal Soil Loss Equation
Authors: Li Yue , Qi Shi , Liang Bin , Ma Junming , Cheng Baihan , Ma Cong , Qiu Yidan , Chen Qinyan 
Published: April 2019

Abstract. Many high and steep slopes are comprised of special topographic and geomorphic
types and formed through mining activities during the construction of mountain expressways.
Severe soil erosion may also occur under heavy rainfall conditions.
Therefore, predicting soil loss on highway slopes is important in protecting
infrastructure and human life. In this study, we investigate Xinhe
Expressway located at the southern edge of the Yunnan–Guizhou Plateau. The
Revised Universal Soil Loss Equation (RUSLE) is used as the prediction model for
soil and water loss on slopes. Geographic information systems, remote
sensing technology, field surveys, run-off plot observation testing, cluster
analysis and co-kriging calculations are also utilised. The partition of the
prediction units of soil loss on the expressway slope in the mountainous
area and the spatial distribution of rainfall on a linear highway are
studied. Given the particularity of the expressway slope in the mountainous
area, the model parameter is modified, and the risk of soil loss along the
mountain expressway is simulated and predicted under 20- and 1-year rainfall
return periods. The following results are obtained. (1) Natural watersheds
can be considered for the prediction of slope soil erosion to represent the
actual situation of soil loss on each slope. Then, the spatial location of
the soil erosion unit can be determined. (2) Analysis of actual observation
data shows that the overall average absolute error of the monitoring area is
0.39 t ha−1, the overall average relative error is 33.96 %
and the overall root mean square error is between 0.21 and 0.66, all of
which are within acceptable limits. The Nash efficiency coefficient is 0.67,
indicating that the prediction accuracy of the model satisfies the
requirements. (3) Under the 1-year rainfall return period condition, we find
through risk classification that the percentage of prediction units with no
risk of erosion is 78 %. The soil erosion risk is low and does not affect
road traffic safety. Under the 20-year return period rainfall condition, the
percentage of units with high and extremely high risks is 7.11 %. The
prediction results can help adjust the design of water and soil conservation
measures for these units.
Identification and differential expression of piRNAs in the gonads of Amur sturgeon (Acipenser schrenckii)
Authors: Yuan Lihong , Li Linmiao , Zhang Xiujuan , Jiang Haiying , Chen Jinping 
Published: April 2019

Objective
Sturgeons are considered living fossils, and have a very high conservation and economic value. Studies on the molecular mechanism of sturgeon gonadal development and sex differentiation would not only aid in understanding vertebrate sex determination but also benefit sturgeon aquaculture. Piwi-interacting RNAs (piRNAs) have been shown to function in germline or gonadal development. In this study, we performed small RNA deep sequencing and microarray hybridization to identify potential sturgeon piRNAs.

Methods
Male and female sturgeon gonads were collected and used for small RNA sequencing on an Illumina HiSeq platform with the validation of piRNA expression by microarray chip. The program Bowtie and k-mer scheme were performed to filter small RNA reads and discover potential sturgeon piRNAs. A known piRNA database, the coding sequence (CDS), 5′ and 3′ untranslated region (UTR) database of the A. Schrenckii transcriptome, Gene Ontology (GO) database and KEGG pathway database were searched subsequently to analyze the potential bio-function of sturgeon piRNAs.

Results
A total of 875,679 putative sturgeon piRNAs were obtained, including 93 homologous to known piRNAs and hundreds showing sex-specific and sex-biased expression. Further analysis showed that they are predominant in both the ovaries and testes and those with a sex-specific expression pattern are nearly equally distribution between sexes. This may imply a relevant role in sturgeon gonadal development. KEGG pathway and GO annotation analyses indicated that they may be related to sturgeon reproductive processes.

Conclusion
Our study provides the first insights into the gonadal piRNAs in a sturgeon species and should serve as a useful resource for further elucidation of the gene regulation involved in the sex differentiation of vertebrates. These results should also facilitate the technological development of early sex identification in sturgeon aquaculture.
Factors of Increasing Benign Prostatic Hyperplasia in Saudi Arabia
Authors: Almaliki Abdullah 
Published: April 2019

Benign prostatic hyperplasia (BPH) is one of the conditions known as prostate growth that accompanied by the lower urinary tract symptoms. There are many researches that were conducted in Saudi Arabia in order to identify the most important factors that are working in increasing this disease. Most of the conducted studies have stated that there is a strong relation between age, metabolic syndrome, inflammation, hormonal alterations, and benign prostatic hyperplasia (BPH).
According to the researches, age and inflammation are playing the vital role as the main factors that cause the increasing cases of benign prostatic hyperplasia in the kingdom of Saudi Arabia. Data and results shown in these studies demonstrate that ageing is the most significant risk factor for the development of BPH as 13% of men 40-49 of age versus 28% in subjects more than 70 year. It was also noticed that In ageing males, a significant tissue-remodeling process takes place within the prostate, especially in the transition zone. Another factors such as hormonal alternations and metabolic syndrome stated to be among the main factors of increasing the disease in the kingdom of Saudi Arabia.
Evaluation of Antioxidant, Anti-inflammatory and Analgesic Activities of Leaves of Saba senegalensis (A.DC) Pichon (Apocynaceae)
Authors: Belemlilga Mohamed Bonewendé , Traoré Tata Kady , Boly Gilchrist A. L. , Ouédraogo Noufou , Traoré Aristide , Lompo Marius , Ouédraogo Sylvin , Pierre Guissou Innocent 
Published: April 2019

Aims: To evaluate antioxidant, anti-inflammatory and analgesic activities of extracts of Saba senegalensis leaves.
Study Design: In vitro antioxidant assay and in vivo anti-inflammatory, analgesic assay of Saba senegalensis extracts.
Place and Duration of Study: Saba senegalensis leaves, were collected in the Centre Region of Burkina Faso, in June–July 2015. The experiments were conducted at the department of Medicine and Traditional Pharmacopeia-Pharmacy (MEPHATRA-PH) of Institute of Research in Health Science (IRSS).
Methodology: The anti-oedematous tests with carrageenan and the analgesic with acetic acid and investigate effect on isolated organ were carried out. The standards were acetylsalicylic acid and paracetamol.
Results: After five hours of carrageenan-induced edema test, aqueous decoction (AD) presented better inhibition on all measure. In fact, at the different doses of 200 mg/kg, 400 mg/kg, and 600 mg/kg it presented percentages of inhibitions respectively of 30.81%, 62.27% and 72.71%. For the analgesic test, the hydroethanol macerate (HEM) showed a better pain reduction compared to the AD with a maximum effect of 77.28% at 400 mg/kg. Antioxidant activity with AD and his fractions shows that AD showed a better activity for the DPPH assay with an IC50 of 1.74 ± 0.10 μg/mL and a reducing power of 59.53 ± 2.16 mmol ET/g Sample. For HEM and his fractions, the ethyl acetate fraction (FHEM-AcOEt) showed a better IC50 of 0.18 ± 0.01 μg/mL for the DPPH test and dichloromethane fraction (FHEM-DCM) a reducing power agent of 88.88 ± 2.65 mmol ET/g Sample. All fractions were endowed with antioxidant properties by both methods.
Conclusion: The study findings suggest that the presence of phenolic and terpenoid compounds could explain the antioxidant, anti-inflammatory and analgesic properties of these extracts.
Effects of the Mixture of ‎ Cynara cardunculus var scolymus and Cinnamomum zeylanicum on Hepatic Enzymes Activity and Lipid Profiles in Patients with Non-alcoholic Fatty Liver Disease
Authors: Poor Razieh Yosef , Abdollahi Mohammad , Malekirad Ali Akbar , Movahednia Esmaeil , Mostafalou Sara , Sheybani Asl Zeynab 
Published: April 2019

Objective: Nonalcoholic fatty liver disease (NAFLD) is rapidly going to be one of the most common metabolic diseases which can negatively affect the liver function and needs to be more explored within the context of new and efficient therapies. The aim of this study was to determine the benefit of ‎ Cynara cardunculus var scolymus and Cinnamomum zeylanicum mixture infusion (1.5 and 0.25 g/100 mL and twice/day) on patients with NAFLD.
Methods: The study was designed as a before-after clinical trial and performed on 20 patients having NAFLD. They were asked to use the mixture of extracts prepared in special bags twice a day for 30 days. Before and after using the mixture, Liver markers of NAFLD including alanin aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphates (ALP), cholesterol (chol), triglycerides (TG), high-density lipoprotein (HDL) and low-density lipoprotein (LDL) and also, fatty liver ultrasonograhic grading were measured.
Results: Treatment with mixture of extracts in patients with NAFLD resulted in a significant decrease in ALT, AST, and ALP. Also there was a significant improvement in lipid profile of the patients given by decreased TG, Chol, and LDL and increased HDL in serum. Moreover, a significant decrease in grade of sonographic examination was showed. No significant linear correlation was found between age, BMI and gender one way side and biochemical parameters and liver enzymes.
Conclusion: Taken together, it is concluded that the mixture of Cynara cardunculus var scolymus, Cinnamomum zeylanicum can have beneficial effects on hepatic function and lipid profiles of patients with NAFLD.