1,720,954 research outputs found
Utilization of Concept Rich Instruction Based Kahoot Application to Improve Mathematical Critical Thinking Skills
Full text linkPenelitian ini bertujuan untuk mengembangkan sebuah e-modul berbasis Concept-Rich Instruction pada mata pelajaran persamaan garis lurus kelas VIII SMP untuk meningkatkan kemampuan berpikir kritis matematis siswa. Penelitian ini menggunkan model penelitian ADDIE yang terdiri atas 5 tahapan yakni Analisis, Desain, Pengembangan, Penerapan, Evaluasi. Instrumen kevalidan berupa angket validasi dari ahli materi dan ahli desain memperoleh nilai presentase validasi ahli sebesar 82,23% validasi desain sebesar 84% dalam kategori valid. Instrumen kepraktisan berupa angket praktikalitas guru dan siswa memperoleh nilai persentase berturut turut 98,88% dan 91,59% yang termasuk kategori sangat praktis. Instrumen keefektifan berupa pre-test dan post-test dengan memperoleh nilai rata rata n-gain sebesar 66,33% dengan tafsran kategori cukup efektif. Selanjutnya angket respon siswa memperoleh hasil 81,16% yang termasuk kategori sangat efektif. Berdasarkan analisis tersebut e-modul layak digunakan untuk meningkatkan kemampuan berpikir kritis matematis siswa
PENGARUH KONSENTRASI DAN LAMA PERENDAMAN STREPTOMYCIN TERHADAP PEMBENTUKAN VARIEGATA PADA Philodendron mayoi
No full textPhilodendron merupakan tanaman hias yang memiliki keunikan pada helaian daun
dalam bermacam variasi bentuk, mulai dari menjari, berbentuk hati, lonjong hingga
membulat. Selain memberikan keindahan secara visual, Philodendron mampu menjaga dan
menambah kesejukan udara karena menyerap polutan. Spesies Philodendron yang bahan
tanamnya mudah diperoleh serta banyak diminati masyarakat ialah Philodendron mayoi.
Namun, minat masyarakat terhadap Philodendron mengalami fluktuasi 5 tahun terakhir.
Pada tahun 2024 produksi hanya 3.670.329 pohon. Alternatif peningkatan ketertarikan
masyarakat terhadap Philodendron mayoi melalui mutasi variegata, variegata terbentuk
karena pemberian streptomycin sebagai mutagen pada konsentrasi dan lama perendaman
yang tepat. Namun, pelaporan informasi mengenai pemberian mutagen tersebut belum
banyak dilaporkan. Penelitian ini bertujuan untuk mengetahui interaksi, konsentrasi dan
lama perendaman streptomycin terbaik pembentukan variegata pada Philodendron mayoi.
Penelitian telah dilaksanakan pada bulan Oktober 2024 hingga Februari 2025 di
lahan percobaan Kelurahan Kandang Limun, Kecamatan Muara Bangka Hulu, Kota
Bengkulu dengan ketinggian tempat ± 10 mdpl. Percobaan ini menggunakan Rancangan
Acak Kelompok Lengkap (RAKL) faktorial dengan 3 ulangan, faktor pertama konsentrasi
streptomycin (K) terdiri dari 4 taraf yaitu K0 (0 ppm) K1 (300 ppm) K2 (600 ppm) dan K3
(900 ppm) serta faktor kedua lama perendaman (P) terdiri dari 3 taraf P1 (16 jam) P2 (32
jam) dan P3 (48 jam). Data pengamatan dianalisis secara statistik uji F dengan uji lanjut
Duncan’s Multiple Range Test (DMRT) pada taraf 5%.
Hasil penelitian ini menunjukkan adanya interaksi antara konsentrasi dan lama
perendaman streptomycin terhadap variabel pengamatan berupa tinggi tanaman, luas daun,
persentase mutan putatif, persentase tanaman normal, persentase tanaman variegata,
tingkat kehijauan daun dan luas daun. Perlakuan konsentrasi 900 ppm (K3) dan lama
perendaman 32 jam (P2) menunjukkan pembentukan variegata terbaik.
(Program Studi Agroekoteknologi, Jurusan Budidaya Pertanian, Fakultas Pertanian,
Universitas Bengkulu)
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
