1,720,959 research outputs found
Pengaruh Penggunaan Multimedia Interaktif Bab Peluang (MUPEL) terhadap Penurunan Kesalahan Konsep Siswa
No full textMultimedia Interaktif Bab Peluang (MUPEL) are an interactive multimedia to facilitate self-learning in the chapter of Probability. The purpose of this research is: (1) to describe misconception of probability for students who use the interactive multimedia assistance and for students who take the conventional learning and (2) to test the difference in the proportion of decreasing misconception between students who use the interactive multimedia assistance and students who take the conventional learning. The research was conducted at SMAN 2 Kediri. The subjects of this research were students of class XI MIPA 6 as a control class and students of class XI MIPA 8 as an experimental class. The research method that used was Quasi Experiment and the reserach design was Non-Equivalent Pretest-Postest Control Group Design. The instrument of data collection is a diagnostic test of misconception. The data analysis technique used is the proportion test with the Z test and the significance level . The results of this research were: (1) the initial knowledge of the experimental class was 76% still make misconception while the control class 77% still made misconception. After going through the learning process, the experimental class succeeded in reducing misconception to 19%, while the control class succeeded to reduce the misconception only to 45%, and (2) the result of hypothesis testing using the Z-test obtained . Based on these results, the proportion of the reduction in misconception of students with learning facilitated by MUPEL greater than the proportion of the reduction in misconception of students who take conventional learning
Penerapan Model Pembelajaran Berbasis Masalah untuk Meningkatkan Kemampuan Pemecahan Masalah Siswa Pada Materi Persamaan Kuadrat
Full text linkThis research is motivated by the low problem solving abilities of students in solving mathematical problems in quadratic equation material, this is caused by the use of a learning model that is still teacher-centered and does not provide students with opportunities to be actively involved in solving problems independently so that students' problem solving abilities are still low. Based on this, this research applies a problem-based learning model. The research method used is a quantitative method using the One-Group Pretest Posttest Design experimental design method. Research data was obtained from the results of observation sheets, student response questionnaires and Pretest Posttest. The data analysis used in this research uses descriptive statistics, which are then presented through tables and diagrams. The results of the research show that the application of the problem-based learning model is good to apply with an average observation result of 95.39% and student responses reaching 83. 84%. In addition, students' problem-solving abilities have increased in the four Polya indicators, namely understanding the problem (18%), making a problem-solving plan (43%), implementing the problem-solving plan (67%), checking again and drawing conclusions (86%). Based on the results of this research, the problem-based learning model is good to apply and can improve students' problem solving abilities in quadratic equation material. Keyword: problem based learning; problem solving skill; quadratic equations AbstrakPenelitian ini dilatarbelakangi rendahnya kemampuan pemecahan masalah siswa dalam menyelesaikan masalah matematika pada materi persamaan kuadrat, hal ini disebabkan oleh penggunaan model pembelajaran yang masih berpusat pada guru dan kurang memberikan kesempatan siswa untuk terlibat aktif dalam memecahkan masalah secara mandiri sehingga kemampuan pemecahan masalah siswa masih rendah. Berdasarkan hal tersebut penelitian ini menerapkan model pembelajaran berbasis masalah. Metode penelitian yang digunakan metode kuantitatif dengan menggunakan metode eksperimen desain One-Group Pretest Posttest Design. Data hasil penelitian diperoleh dari hasil lembar observasi, angket respon siswa dan Pretest Posttest. Analisis data yang digunakan dalam penelitian ini menggunakan adalah statistik deskriptif, yang kemudian dipresentasikan melalui tabel dan diagram.. Hasil penelitian menunjukkan bahwa penerapan model pembelajaran berbasis masalah baik untuk diterapkan dengan rata-rata hasil observasi sebesar 95,39% dan respon siswa mencapai 83,84%. Selain itu, kemampuan pemecahan masalah siswa mengalami peningkatan pada keempat indikator Polya, yaitu memahami masalah (18%), membuat rencana pemecahan masalah (43%), melaksanakan rencana pemecahan masalah (67%), memeriksa kembali dan menarik kesimpulan (86%). Berdasarkan hasil penelitian ini model pembelajaran berbasis masalah baik untuk diterapkan dan dapat meningkatkan kemampuan pemecahan masalah siswa pada materi persamaan kuadrat. Kata Kunci: kemampuan pemecahan masalah; model pembelajaran berbasis masalah; persamaan kuadrat DOI: http://dx.doi.org/10.23960/mtk/v12i2.pp138-14
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Numerical Simulation of Flood Routing using the Simplified Saint Venant Equations in Rectangular Channels
No full textFloods, which cause a lot of damage, are a natural phenomenon that often occurs during the rainy season. Flood occurs because the discharge entering the channel exceeds the channel capacity. If the discharge data in the upstream area that will enter the channel is known, we can determine the flow behavior in the downstream area using a mathematical model. In this study, we proposed using simplified Saint Venant equations to simulate the flow routing in a prismatic channel with a rectangular section. This model is solved numerically using the finite difference method. Here, the numerical scheme used succeeds in simulating the flow behavior in the channel due to the discharge entering it. The simulation results show that the discharge entering the channel will propagate downstream with decreasing discharge quantity. Information on the amount of discharge at locations along the channel is useful as supporting data for flood control and prevention systems that will be conveyed to residents along the channel.
Keywords: flood routing; prismatic channel; Saint Venant Equations; finite difference method.
Abstrak
Banjir yang menimbulkan banyak kerusakan merupakan fenomena alam yang sering terjadi pada musim hujan. Banjir terjadi karena debit yang masuk ke dalam kanal melebihi kapasitas kanalnya. Jika data debit di daerah hulu yang akan masuk ke dalam kanal diketahui, maka kita dapat menentukan perilaku aliran di daerah hilir dengan menggunakan model matematika. Dalam studi ini, kami mengusulkan untuk menggunakan persamaan Saint Venant yang disederhanakan untuk mensimulasikan penelusuran aliran pada saluran prismatik dengan penampang persegi panjang. Model ini diselesaikan secara numerik dengan menggunakan metode beda hingga. Di sini, skema numerik yang digunakan berhasil mensimulasikan perilaku aliran pada saluran akibat debit yang masuk. Hasil simulasi menunjukkan bahwa debit yang masuk ke saluran akan merambat ke hilir dengan kuantitas debit yang semakin berkurang. Informasi jumlah debit di lokasi sepanjang saluran ini berguna sebagai data pendukung pada sistem pengendalian dan pencegahan banjir yang akan disampaikan kepada penduduk di sepanjang kanal.
Kata kunci: penelusuran banjir; saluran prismatik; persamaan Saint Venant; metode beda hingga
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