bluuebunny/crossref_metadata_2025_split huggingface dataset:
UPAYA MENINGKATKAN KETUNTASAN BELAJAR MATEMATIKA MENGGUNAKAN MODEL PEMBELAJARAN KOOPERATIF TIPE NUMBERED HEADS TOGETHER (NHT) DI SMPN 3 DEPOK SLEMAN TAHUN PELAJARAN 2012/2013
Authors: ES Yeni Rahmawati 
Published: March 2017

The aims of this research were to increase the mastery learning of student by implementation of cooperative Learning type number head together. The method of the reseacrh was Classroom Action Research. The Instrument of data collection used formatif test sheet and photo documentation. Technique of data analysis used qualitative and quantitative analysis. Based on the results of this research showed that through a cooperative learning type Numbered Heads Together (NHT) can increase student mathematics learning completeness VIID class. Increased mastery learning mathematics student looks from the average value of the class, the average value of the final test grade students cycle known to increase students' mastery learning mathematics in the first cycle was 74.3 to 76.2 in the second cycle. In addition, the number of students who received grades greater than or equal to 75 also increased from the first cycle is 16 students or 50% to 25 students or 78.12%.Keywords: cooperative learning, mastery learning, NHT
PENERAPAN MODEL COOPERATIVE LEARNING TIPE JIGSAW DENGAN MEDIA GAMBAR UNTUK MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR PADA PEMBELAJARAN MATEMATIKA SISWA KELAS IV SDN 2 NAMBAHREJO
Authors: Rusmartini Rusmartini 
Published: March 2017

The aims of this research were to increase the activities and the result of study by implementation of cooperative learning model type jigsaw with picture media. The method of the research was Classroom Action Reserach. The instrument of data collection used observation sheet and test. Technique of data analysis used qualitative and quantitative analysis. The result showed that the student activity in cycle I 62,58% (active) and cycle II 81,50%(activeenough). The result study of the cognitivie in cycle I 71,31%(good) and cycle II80,42%(good).Keywords: activity, jigsaw, picture media, result study
PENGARUH PENERAPAN PENDEKATAN KONTEKSTUAL TERHADAP KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA SMP
Authors: Suwanjal Usep 
Published: March 2017

Critical thinking skills of mathematics mastered by students is very important, especially in the competition of globalitation era. An approach that can improve both of them is contextual approach in learning. This research aims are to determine: The Improvement of students' critical thinking skills between the class which used contextual approach in learning and the one which used conventional learning. Quasi-experiment methods was used in the research and the design was "pretest-posttest non equivalent control group". Population of this research was the students of SMP Negeri 3 Menggala and class VIII C and VIII D as the research sample, technique of samples used purposive sampling. Data collected by the instrument test critical thinking of mathematics. The improvement of critical thinking skills data analysed by using the t- test. The findings of this study indicated: The Improvement of students' critical thinking skills between the class which used contextual approach in learning was better than which used conventional learning. In table t-test indicated sig < α is 0.001 < 0.05Keywords : contextual approach, critical thinking skills of mathematics
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE MAKE A MATCH UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA SISWA KELAS IV SD NEGERI 2 GAYAU SAKTI TAHUN PELAJARAN 2014/2015
Authors: Soleha Soleha 
Published: March 2017

The aims of this research were to increase the student learning outcomes by implementation of cooperative learning model of Make A Match. The method of the research was Classroom Action Reserach. The data collected by the observation sheet, formatif test sheet (test student learning outcomes). The results of the study implementation of cooperative learning model of Make A Match proven to improve learning performance followed by increased the student learning outcomes, enthusiastic students to participate in learning. The result showed that Percentage student learning outcomes 41.6 % in the first cycle to 93.3 % in the second cycle .Keywords: student learning outcomes, cooperative learning model of Make A Match
MENGUKUR LAJU AIR KELUAR DARI BOTOL PADA TIAP LUBANG DENGAN KETINGGIAN TERTENTU
Authors: Asmawati Eka Yulisari 
Published: March 2017

Experiments have been conducted to measure the rate of water out of the bottle on each hole with a certain height. The research method is to perform a simple test. Tests carried out using perforated by nails bottles are heated / solder. When it was acquired 5 hole will be closed by the bottle duct tape / plaster. Then bottle filled with water to the brim, open the first hole, then count the time the water out of the hole, this step is done repeatedly until the fifth hole. After the results of the data obtained will be used widely calculation formula bottle (A= πd2 ), water discharge (Q = ) and the rate of water (v = ). The results of these calculations found that the fourth hole or holes which position has the lowest rate of water faster than others. This is because in the lowest position, they experienced greater pressure than the top position. So, with tremendous pressure to make the flow of fluid to flow faster.
PENGARUH MODEL PEMBELAJARAN INKUIRI TERBIMBING TERHADAP HASIL BELAJAR FISIKA SISWA KELAS VIII SMP NEGERI 4 METRO SEMESTER GENAP TAHUN PELAJARAN 2013/2014
Authors: Khotimah Laela Ngasarotul , Partono Partono 
Published: March 2017

The aims of this research is to find the effect of guided inquiry learning model on learning outcomes physics eighth grade students of SMP N 4 Metro semester of academic year 2013/2014. The sample was VIIID as VIIIF as a control class and experimental class were selected by cluster random sampling. The study design used was Posttest-Only Control Design and researchinstruments in the form of sheets of observations and questions. Technical analysis of the data use normality test, homogeneity, test the similarity of two average, and two different test average.The results showed that the improvement of learning outcomes learning physics class experiments using guided inquiry learning model is higher than the control class students. From the calculation, the value of t = 2.18 is higher than the value table = 2.02 at significance level α = 5%. Therefore, it can concluded that the model of guided inquiry learning effect on learning outcomes physics eighth grade students of SMP N 4 Metro semester of academic year 2013/2014. The success of learning during the learning process using guided inquiry model of learning because students can more freely in finding the concept it self and can connect between the knowledge possessed by the results they found in the experiments, so that influenced on learning outcomes.
PEMANFAATAN MEDIA POWER POINT DALAM PEMBELAJARAN FISIKA DENGAN PENDEKATAN KONSTRUKTIVISME
Authors: Wajdi Badrul 
Published: March 2017

Penelitian ini bertujuan untuk mengetahuipengaruh pemanfaatan media power point dalam pembelajaran fisika dengan pendekatan konstruktivisme terhadap prestasi belajar siswa. Materi pelajaran yang dikaji dalam penelitian ini adalah zat dan wujudnya.Tempat pelaksanaan penelitian di SMP Negeri 1 Wanasabapada semester Ganjil tahun pembelajaran 2013/2014. Jenis penelitian ini adalah penelitian eksperiman dengan populasi seluruh siswa kelas VII SMP Negeri 1 Wanasaba yang terdiri dari 7 kelas dan sampelnya adalah kelas VII2 dan VII3 yang diperoleh dengan cara cluster random sampling.Variabel bebas dalam penelitian ini adalah media power point dan variabel terikat dalam penelitian ini adalah prestasi belajar fisika siswa. Teknik pengumpulan data dilakukan dengan menggunakan metode tes. Hasil analisis data menunjukkan bahwa pada kelas eksperimen didapatkan harga thitungsebesar 1,76 sedangkan nilai ttabel sebesar 1,684 pada taraf signifikansi 5%.Jadi nilai thitung lebih besar dibandingkan dengan nilai ttabel (thitung>ttabel) sehingga dapat disimpulkan bahwa terdapat pengaruh pemanfaatan media power point dalam pembelajaran fisika dengan pendekatan konstruktivisme terhadap prestasi belajar siswa.
PENERAPAN PEMBELAJARAN KOOPERATIF TIPE NUMBERED HEADS TOGETHER (NHT) PADA MATERI GERAK PARABOLA DAN GERAK MELINGKAR MELALUI KEGIATAN LESSON STUDY
Authors: Prastiti Wari 
Published: March 2017

Penelitian ini bertujuan untuk meningkatkan aktivitas belajar fisika materi gerak parabola dan gerak melingkar siswa kelas XI IPA1SMA Negeri 5 Metro Tahun Pelajaran 2014/2015 dengan penerapan pembelajaran kooperatif tipe Numbered Heads Together (NHT) melalui kegiatan Lesson Study. Metode penelitian yang digunakan pada penelitian ini adalah Penelitian Tindakan Kelas (PTK) yang dilaksanakan dalam dua siklus. Setiap siklus diawali dengan tahap plan kemudian dilanjutkan do dan see/refleksi. Subyek penelitian adalah siswa kelas XI IPA1SMA Negeri 5 Metro Tahun Pelajaran 2014/2015. Data diperoleh melalui observasi menggunakan lembar observasi aktivitas belajar dan dianalisis secara deskriptif kualitatif. Berdasarkan hasil penelitan dapat disimpulkan bahwa penerapan pembelajaran kooperatif tipe NHT dapat meningkatkan aktivitas belajar siswa XI IPA1 SMA Negeri 5 Metro Tahun Pelajaran 2014/2015 . Hal ini terlihat dari hasil siklus I dan siklus II terjadi peningkatan aktivitas belajar pada tiap indikator aktivitas belajar yang ditentukan. Penelitian ini bertujuan untuk meningkatkan aktivitas belajar fisika materi gerak parabola dan gerak melingkar siswa kelas XI IPA1SMA Negeri 5 Metro Tahun Pelajaran 2014/2015 dengan penerapan pembelajaran kooperatif tipe Numbered Heads Together (NHT) melalui kegiatan Lesson Study. Metode penelitian yang digunakan pada penelitian ini adalah Penelitian Tindakan Kelas (PTK) yang dilaksanakan dalam dua siklus. Setiap siklus diawali dengan tahap plan kemudian dilanjutkan do dan see/refleksi. Subyek penelitian adalah siswa kelas XI IPA1SMA Negeri 5 Metro Tahun Pelajaran 2014/2015. Data diperoleh melalui observasi menggunakan lembar observasi aktivitas belajar dan dianalisis secara deskriptif kualitatif. Berdasarkan hasil penelitan dapat disimpulkan bahwa penerapan pembelajaran kooperatif tipe NHT dapat meningkatkan aktivitas belajar siswa XI IPA1 SMA Negeri 5 Metro Tahun Pelajaran 2014/2015 . Hal ini terlihat dari hasil siklus I dan siklus II terjadi peningkatan aktivitas belajar pada tiap indikator aktivitas belajar yang ditentukan.
UPAYA MENINGKATKAN HASIL BELAJAR, AKTIVITAS DAN SIKAP PADA MATERI GETARAN, GELOMBANG DAN BUNYI, MELALUI METODE DISKUSI, OBSERVASI, DAN EKSPERIMEN
Authors: Purnomowati Yuni Lestari 
Published: March 2017

Penelitian dilakukan menggunakan metodePenelitian Tindaan Kelas (PTK). Penelitian ini dilaksanakan di SMKN 3 Metro pada siswa Kelas XI-TKJa semester genapTahun Pelajaran 2012/2013 berjumlah 31 siswa.Sasaran perubahan dalam penelitian ini yaitu peningkatan hasil, aktivitas dan sikap siswa terhadap pelajaran Fisika. Peneliti dapat menyimpulkan bahwa peningkatan hasil belajargetaran, gelombang dan bunyi terjadi karena kerjasama siswa selama proses pembelajaran menumbuhkan suasana yang nyaman sekaligus kompetitif. Perubahan sikap siswa terhadap pelajaran Fisika semakin baik. Ketika pembelajaran fisika mampu memberikan apa yang diharapkan oleh siswa, yaitu siswa merasa nyaman, tidak terintimidasi oleh guru dan teman karena keterbatasan yang dimilikinya, terlibat dengan teman sejawat pada saat menyelesaikan tugas-tugas yang diberikan dengan diskusi, melakukan observasi, dan bereksperimen, maka persepsi terhadap fisika sebagai objek menjadi berubah lebih baik. Adanya interaksi siswa dengan media pembelajaran karena kegiatan mendiskusikan, mengobservasi, dan melakukan eksperimen mendorong siswa menjadi aktif selama proses pembelajaran. Penelitian dilakukan menggunakan metodePenelitian Tindaan Kelas (PTK). Penelitian ini dilaksanakan di SMKN 3 Metro pada siswa Kelas XI-TKJa semester genapTahun Pelajaran 2012/2013 berjumlah 31 siswa.Sasaran perubahan dalam penelitian ini yaitu peningkatan hasil, aktivitas dan sikap siswa terhadap pelajaran Fisika. Peneliti dapat menyimpulkan bahwa peningkatan hasil belajargetaran, gelombang dan bunyi terjadi karena kerjasama siswa selama proses pembelajaran menumbuhkan suasana yang nyaman sekaligus kompetitif. Perubahan sikap siswa terhadap pelajaran Fisika semakin baik. Ketika pembelajaran fisika mampu memberikan apa yang diharapkan oleh siswa, yaitu siswa merasa nyaman, tidak terintimidasi oleh guru dan teman karena keterbatasan yang dimilikinya, terlibat dengan teman sejawat pada saat menyelesaikan tugas-tugas yang diberikan dengan diskusi, melakukan observasi, dan bereksperimen, maka persepsi terhadap fisika sebagai objek menjadi berubah lebih baik. Adanya interaksi siswa dengan media pembelajaran karena kegiatan mendiskusikan, mengobservasi, dan melakukan eksperimen mendorong siswa menjadi aktif selama proses pembelajaran.
AVALIAÇÃO SAZONAL E MONITORAMENTO DAS ÁGUAS DO RIO DOCE – GO
Authors: Cabral João Batista Pereira , Rocha Isabel Rodrigues da , Nogueira Pollyanna Faria , Becegato Valter Antonio 
Published: March 2017

O presente trabalho objetivou avaliar as características físicas e químicas das águas do rio Doce (GO), a montante da PCH Irara, abrangendo em seu escopo diferentes pontos de amostragem. Realizaram-se doze coletas em cinco pontos distintos no período de julho de 2009 a junho de 2011. Foram avaliados os parâmetros: pH, temperatura, condutividade elétrica (CE), salinidade (NaCl), turbidez (Turb) e total de sólido dissolvido (TDS). As análises das águas foram avaliadas com a sonda multiparamétrica Oakton Pcd 650 e o turbidímetro de bancada. Os resultados foram discutidos e comparados com base aos limites estabelecidos pela Resolução CONAMA Nº 357, de 17 de março de 2005. Os valores foram avaliados quanto à conformidade, sendo verificados pontos que se enquadram nas Classes 1 e 2, cuja característica das águas é de boa qualidade para uso humano e para dessedentação de animais após tratamento.
EROSIVIDADE DAS CHUVAS (R) NOS MUNICÍPIOS DE CASTELO DO PIAUÍ E JUAZEIRO DO PIAUÍ, NO ESTADO DO PIAUÍ (BRASIL)
Authors: Dos Santos Francílio De Amorim , De Aquino Cláudia Maria Sabóia 
Published: March 2017

O objetivo do presente estudo foi estimar a Erosividade das chuvas (R) nosmunicípios de Castelo do Piauí e Juazeiro do Piauí, por meio dos dados dos postos meteorológicos da SUDENE. Para estimar o fator R foram utilizados os dados de precipitação das 13 estações pluviométricas da Superintendência do Desenvolvimento do Nordeste (SUDENE). Os referidos dados tiveram suas falhas corrigidas através do Método de Ponderação Regional e foram manuseados no Sistema de Informação Geográfica (SIG) ArcGIS 10.2. Desse modo, foi possível estimar que 51,1% dos municípios estudados possuemtaxas pluviométricas situadas entre 1.100 a 1.200 mm e em 11,9% a erosividade variou de muito baixa a baixa erosividade, 74,7% da área de estudo foram enquadradas nas classes de alta a muito alta erosividade, evidenciando assim fragilidade climática natural constituindo-se fator limitante ao desenvolvimento de atividades agropecuárias. Tais dados possibilitam odesenvolvimento de planejamentos físico territoriais, almejando o mínimo impacto possível à dinâmica ambiental, contudo ressalta-se o complemento desta analise com dados relativos à declividade, tipos de solos, fisionomia da cobertura vegetal e ainda dos tipos de usos da área de estudo objetivando uma analise da fragilidade ambiental da área de modo mais completa.
Acute hypercapnic respiratory failure as a rare complication of meningoencephalitis: Two case reports
Authors: Grigorakos Leonidas , Tzortzopoulou Katerina , Alexopoulou Anastasia , Sotiriou Eva , Markopoulou Dimitra , Moles Athanasios , Agathonikou Alexandros , Ladakis Charalambos 
Published: March 2017

Background: Differentiated diagnosis of meningoencephalitis in elderly patients, when an uncommon picture of respiratory infection leading to acute hypercapnic respiratory failure (AHRF) and without neurological signs is present, may raise serious difficulties.Case report: Two patients aged 72 (patient 1) and 75 (patient 2), without any medical history of respiratory problems, were hospitalized during spring with influenza symptoms. Within less than 24 hours from their admission, patients developed AHFR, which led to disturbances of arterial blood gases (ABGs). They were intubated and transferred, mechanically ventilated, to our intensive care unit (ICU). After normalization of ABGs, a weaning process followed. Weaning was unsuccessful, as unexpected neurological semiotics occurred. The imaging of neurological MRI revealed no special damage apart from microangiopathy. Further investigations through lumbar puncture with cerebrospinal fluid (CSF) testing revealed meningoencephalitis. Antiviral treatment was applied and the outcome was successful for both patients.Conclusion: Critical care medical personnel should be aware of the event of viral meningoencephalitis in elderly patients with AHRF. Especially in the middle of influenza endemic periods, the management of elderly patients may not be appropriate, thus resulting in serious delays for a proper treatment of disease. Laboratory screening of blood and urine, as well as other body fluids, can help detect and determine brain infection. Results from these tests can help exclude other diseases that mimic meningoencephalitis. In cases of patients who are hospitalized in the ICU due to AHRF and do not exhibit neurological abnormalities from the onset of illness, lumbar puncture and check of CSF should be a routine examination. Prophylactic vaccination of high-risk groups may be of crucial importance for preventing complications in patients who develop meningoencephalitis. However, once infected with this disease, the positive outcome is highly dependent on the immediate diagnosis and proper treatment of patients in the ICU.
Outlier analyses to test for local adaptation to breeding grounds in a migratory arctic seabird
Authors: Tigano Anna , Shultz Allison J. , Edwards Scott V. , Robertson Gregory J. , Friesen Vicki L. 
Published: March 2017

AbstractInvestigating the extent (or the existence) of local adaptation is crucial to understanding how populations adapt. When experiments or fitness measurements are difficult or impossible to perform in natural populations, genomic techniques allow us to investigate local adaptation through the comparison of allele frequencies and outlier loci along environmental clines. The thick‐billed murre (Uria lomvia) is a highly philopatric colonial arctic seabird that occupies a significant environmental gradient, shows marked phenotypic differences among colonies, and has large effective population sizes. To test whether thick‐billed murres from five colonies along the eastern Canadian Arctic coast show genomic signatures of local adaptation to their breeding grounds, we analyzed geographic variation in genome‐wide markers mapped to a newly assembled thick‐billed murre reference genome. We used outlier analyses to detect loci putatively under selection, and clustering analyses to investigate patterns of differentiation based on 2220 genomewide single nucleotide polymorphisms (SNPs) and 137 outlier SNPs. We found no evidence of population structure among colonies using all loci but found population structure based on outliers only, where birds from the two northernmost colonies (Minarets and Prince Leopold) grouped with birds from the southernmost colony (Gannet), and birds from Coats and Akpatok were distinct from all other colonies. Although results from our analyses did not support local adaptation along the latitudinal cline of breeding colonies, outlier loci grouped birds from different colonies according to their non‐breeding distributions, suggesting that outliers may be informative about adaptation and/or demographic connectivity associated with their migration patterns or nonbreeding grounds.
Canada lynx use of burned areas: Conservation implications of changing fire regimes
Authors: Vanbianchi Carmen M. , Murphy Melanie A. , Hodges Karen E. 
Published: March 2017

AbstractA fundamental problem in ecology is forecasting how species will react to major disturbances. As the climate warms, large, frequent, and severe fires are restructuring forested landscapes at large spatial scales, with unknown impacts on imperilled predators. We use the United States federally Threatened Canada lynx as a case study to examine how predators navigate recent large burns, with particular focus on habitat features and the spatial configuration (e.g., distance to edge) that enabled lynx use of these transformed landscapes. We coupledGPSlocation data of lynx in Washington in an area with several recent large fires and a number ofGISlayers of habitat data to develop models of lynx habitat selection in recent burns. Random Forest habitat models showed lynx‐selected islands of forest skipped by large fires, residual vegetation, and areas where some trees survived to use newly burned areas. Lynx used burned areas as early as 1 year postfire, which is much earlier than the 2–4 decades postfire previously thought for this predator. These findings are encouraging for predator persistence in the face of fires, but increasingly severe fires or management that reduces postfire residual trees or slow regeneration will likely jeopardize lynx and other predators. Fire management should change to ensure heterogeneity is retained within the footprint of large fires to enable viable predator populations as fire regimes worsen with climate change.
New aspects of grassland recovery in old‐fields revealed by trait‐based analyses of perennial‐crop‐mediated succession
Authors: Kelemen András , Tóthmérész Béla , Valkó Orsolya , Miglécz Tamás , Deák Balázs , Török Péter 
Published: March 2017

AbstractClassical old‐field succession studies focused on vegetation changes after the abandonment of annual croplands or on succession after the elimination of cultivated crops. Perennial‐crop‐mediated succession, where fields are initially covered by perennial crops, reveals alternative aspects of old‐field succession theories. We tested the validity of classical theories of old‐field succession for perennial‐crop‐mediated succession. We formulated the following hypotheses: (1) functional diversity increases with increasing field age; (2) resource acquisition versus conservation trade‐off shifts toward conservation at community level during the succession; (3) the importance of spatial and temporal seed dispersal decreases during the succession; and (4) competitiveness and stress‐tolerance increases and ruderality decreases at community level during the succession. We studied functional diversity, trait distributions and plant strategies in differently aged old‐fields using chronosequence method. We found increasing functional richness and functional divergence, but also unchanged or decreasing functional evenness. We detected a shift from resource acquisition to resource conservation strategy of communities during the succession. The role of spatial and temporal seed dispersal was found to be important not only at the initial but also at latter successional stages. We found an increasing stress‐tolerance and a decreasing ruderality during succession, while the competitiveness remained unchanged at the community level. Despite the markedly different starting conditions, we found that classical and perennial‐crop‐mediated old‐field successions have some similarities regarding the changes of functional diversity, resource acquisition versus conservation trade‐off, and seed dispersal strategies. However, we revealed also the subsequent differences. The competitive character of communities remained stable during the succession; hence, the initial stages of perennial‐crop‐mediated succession can be similar to the middle stages of classical old‐field succession. Moreover, the occupied functional niche space and differentiation were larger in the older stages, but resources were not effectively utilized within this space, suggesting that the stabilization of the vegetation requires more time.