Penerapan Metode Pembelajaran Two Stay Two Stray (TSTS) untuk Meningkatkan Hasil Belajar Siswa pada Materi Budaya Hidup Sehat di Tingkat Sekolah Dasar Negeri 110 Pekanbaru

This model can be used during the teaching process, one of which is cooperative learning. However, this model emphasizes students to learn in discussion forums, to exchange opinions. In this study using the Two Stay Two Stray method, this method directly involves students to be always active during the learning process. The purpose of this learning method is to improve the spirit of working together, helping each other, being mutually responsible for the tasks that have been given. If this learning method can be used correctly it is hoped that it can increase student enthusiasm during learning, so that with the enthusiasm for learning it can be easy to achieve learning goals. As for the type of research used using quantitative research and in the selection of data collection techniques used using observation, tests and documentation. The samples used in this study were 37 students in VA class and 38 students in VB class. After this learning is applied, it can be concluded that the results of the research show that the achievement of VA class students has increased in terms of individual student learning outcomes and has increased in classical learning outcomes. Whereas in class VB there was an increase in learning achievement both individually, but did not experience classical learning mastery

Model Pembelajaran Cooperative Teams Games Tournament (TGT) Secara Tatap Muka Untuk Meningkatkan Motivasi Belajar Passing Atas Kelas X IPS MA AL-Hidayah Sukamaju Singigi Hilir Kabupaten Kuantan Singigi Pada Pembelajaran PJOK

Penelitian model kooperatif TGT ini bertujuan untuk mengetahui pelaksanaan metode pembelajaran Cooperative teams Games tournament (TGT) dilaksanakan guru PJOK untuk meningkatkan motivasi belajar passing atas siswa. Metode penelitian ini menggunakan  penelitian tindakan kelas, terdiri dari empat tahapan yaitu perencanaan, pelaksanaan tindakan, pengamatan dan refleksi. Berdasarkan hasil penelitian dapat diketahui pada siklus I pelaksanaan Metode Pembelajaran Cooperative Teams Games Tournament (TGT) dalam pembelajaran PJOK untuk meningkatkan motivasi belajar passing atas peserta didik dengan hasil 47,33% dapat dikategorikan rendah. Pada siklus II dengan hasil 64,6% dapat dikategorikan cukup dengan perkembangan meningkatnya motivasi belajar passing atas peserta didik. Hasil penelitian ini disimpulkan bahwa Model Pembelajaran Cooperative Teams Games Tournament (TGT) dalam pembelajaran PJOK khususnya pada materi bola voli dapat meningkatkan motivasi belajar passing atas peserta didik pada pembelajaran PJOK

Calcareous nannofossil biostratigraphy of the M. del Casino section (northern Apennines, Italy) and paleoceanographic conditions at times of Late Miocene sapropel formation

A detailed quantitative calcareous nannofossil analysis has been performed on 138 samples from the astronomically dated Monte del Casino section with the aim to identify and precisely date the most important calcareous nannofossil events across the Tortonian=Messinian boundary in the Mediterranean, and to unravel paleoceanographic conditions at times of sapropel formation during the Late Miocene. From the biostratigraphic perspective, the genus Amaurolithus provides three successive first occurrences (FOs): A. primus, A.cf. amplificus and A. delicatus, dated at 7.446, 7.434 and 7.226 Ma, respectively. Other bioevents include the base and top of the 'small reticulofenestrids' Acme, dated at 7.644 and 6.697 Ma, and the FO, FCO and LO of R. rotaria, dated at 7.405, 7.226 and 6.771 Ma. These events appear to be useful in improving biostratigraphic resolution in the Tortonian-Messinian boundary interval, at least for the Mediterranean. Quantitative analysis revealed changes in the calcareous nannofossil assemblage associated with the sapropels. The observed fluctuations suggest a single mechanism for sapropel formation in the Mediterranean during the late Neogene. Sapropels are characterized by a decrease in the total number of coccoliths, interpreted mainly as a reduction in calcareous nannofossil production due to increased siliceous plankton production during spring blooms; and an increase in reworked specimens, interpreted to reflect enhanced continental input via river run-off. An increase in abundance of the genus Rhabdosphaera can be explained by opportunistic behavior at the end of the spring bloom when nutrient levels start to become impoverished. As far as sea surface water temperature indicators are concerned, warm water D. pentaradiatus shows positive fluctuations in sapropels while cooler water D. intercalaris and C. pelagicus show negative fluctuations. Ó 1999 Elsevier Science B.V. All rights reserved

Kontribusi Kelincahan dan Daya Tahan (Vo2max) dengan Keterampilan Menggiring Bola pada Tim Sepakbola Putra Smk Muhammadiyah 2 Pekanbaru

Agility and endurance is a skill which is football player must have. This study aims to find out how big the contribution of agility and endurance with dribbling skills of SMK Muhamadiyah 2 Pekanbarufootball team. The sample in this study amounted to 20 peoples with sampling technique of total sampling. Instrument agility with dodging run, endurance with bleep test, and dribble. At the time of analysis, there are some problems that occur such as at the time of dribbling, the ball loose control on the mastery, and the difficulty to break through the opponent's defense. Based on the results of the study, the data shows that there are contribution of agility, endurance, or combined both (agility and endurance) to the students' skills in dribbling. Percentage of agility, endurance, and agility and endurance of SMK. Muhamadiyah 2 Pekanbaru football team, each of which amounted to 45.74%, 28.30%, And 54.87%

Quark coalescence in the mid rapidity region at RHIC

We utilize the ALCOR model for mid-rapidity hadron number predictions at AGS, SPS and RHIC energies. We present simple fits for the energy dependence of stopping and quark production.Comment: Talk given at SQM2001, Frankfurt, (LaTeX 8 pages, 5 .ps figs

Low-Intensity Vibration Protects the Weight-Bearing Skeleton and Suppresses Fracture Incidence in Boys With Duchenne Muscular Dystrophy: A Prospective, Randomized, Double-Blind, Placebo-Controlled Clinical Trial

The ability of low-intensity vibration (LIV) to combat skeletal decline in Duchenne Muscular Dystrophy (DMD) was evaluated in a randomized controlled trial. Twenty DMD boys were enrolled, all ambulant and treated with glucocorticoids (mean age 7.6, height-adjusted Z-scores [HAZ] of hip bone mineral density [BMD] −2.3). Ten DMD boys were assigned to stand for 10 min/d on an active LIV platform (0.4 g at 30 Hz), while 10 stood on a placebo device. Baseline and 14-month bone mineral content (BMC) and BMD of spine, hip, and total body were measured with DXA, and trabecular bone density (TBD) of tibia with quantitative computed tomography (QCT). All children tolerated the LIV intervention well, with daily compliance averaging 78%. At 14 months, TBD in the proximal and distal tibia remained unchanged in placebo subjects (−1.0% and −0.2%), while rising 3.5% and 4.6% in LIV subjects. HAZ for hip BMD and BMC in the placebo group declined 22% and 13%, respectively, contrasting with no change from baseline (0.9% and 1.4%) in the LIV group. Fat mass in the leg increased 32% in the placebo group, contrasting with 21% in LIV subjects. Across the 14-month study, there were four incident fractures in three placebo patients (30%), with no new fractures identified in LIV subjects. Despite these encouraging results, a major limitation of the study is—despite randomized enrollment—that there was a significant difference in age between the two cohorts, with the LIV group being 2.8y older, and thus at greater severity of disease. In sum, these data suggest that noninvasive LIV can help protect the skeleton of DMD children against the disease progression, the consequences of diminished load bearing, and the complications of chronic steroid use. © 2022 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research

Regularization of statistical inverse problems and the Bakushinskii veto

In the deterministic context Bakushinskii's theorem excludes the existence of purely data driven convergent regularization for ill-posed problems. We will prove in the present work that in the statistical setting we can either construct a counter example or develop an equivalent formulation depending on the considered class of probability distributions. Hence, Bakushinskii's theorem does not generalize to the statistical context, although this has often been assumed in the past. To arrive at this conclusion, we will deduce from the classic theory new concepts for a general study of statistical inverse problems and perform a systematic clarification of the key ideas of statistical regularization.Comment: 20 page

Risk perception and media in shaping protective behaviors: insights from the early phase of COVID-19 Italian outbreak

In the absence of target treatments or vaccination, the SARS-CoV-2 pandemic can be impeded by effectively implementing containment measures and behaviors. This relies on individuals’ adoption of protective behaviors, their perceived risk, and the use and trust of information sources. During a health emergency, receiving timely and accurate information enables individuals to take appropriate actions to protect themselves, shaping their risk perception. Italy was the first western country plagued by COVID-19 and one of the most affected in the early phase. During this period, we surveyed 2,223 Italians before the national lockdown. A quarter of the sample perceived COVID-19 less threatening than flu and would not vaccinate, if a vaccine was available. Besides, most people perceived containment measures, based on social distancing or wearing masks, not useful. This perceived utility was related to COVID-19 threat perception and efficacy beliefs. All these measures were associated with the use of media and their truthfulness: participants declared to mainly use the Internet, while health organizations’ websites were the most trusted. Although social networks were frequently used, they were rated lower for trustfulness. Our data differ from those obtained in other community samples, suggesting the relevance to explore changes across different countries and during the different phases of the pandemic. Understanding these phenomena, and how people access the media, may contribute to improve the efficacy of containment measures, tailoring specific policies and health communications

Successful extraction of insect DNA from recent copal inclusions: limits and perspectives

Insects entombed in copal, the sub-fossilized resin precursor of amber, represent a potential source of genetic data for extinct and extant, but endangered or elusive, species. Despite several studies demonstrated that it is not possible to recover endogenous DNA from insect inclusions, the preservation of biomolecules in fossilized resins samples is still under debate. In this study, we tested the possibility of obtaining endogenous ancient DNA (aDNA) molecules from insects preserved in copal, applying experimental protocols specifically designed for aDNA recovery. We were able to extract endogenous DNA molecules from one of the two samples analyzed, and to identify the taxonomic status of the specimen. Even if the sample was found well protected from external contaminants, the recovered DNA was low concentrated and extremely degraded, compared to the sample age. We conclude that it is possible to obtain genomic data from resin-entombed organisms, although we discourage aDNA analysis because of the destructive method of extraction protocols and the non-reproducibility of the results