1,720,957 research outputs found
Konsorsium Bakteri Endofit Asal Keladi, Alang-Alang, dan Putri Malu Sebagai Pemacu Pertumbuhan dan Pengendali Meloidogyne incognita pada Tomat
No full textNematoda puru akar Meloidogyne incognita merupakan endoparasit tanaman tomat yang menyebabkan gejala abnormal pada akar. Agen hayati jenis bakteri endofit potensial digunakan untuk pengendalian M. incognita. Bakteri endofit adalah bakteri yang hidup di dalam jaringan tanaman untuk sebagian atau seluruh hidupnya tanpa merugikan tanaman. Tujuan penelitian ini untuk mengisolasi dan menguji konsorsium bakteri endofit asal tanaman keladi, putri malu, dan alang-alang dalam mengendalikan nematoda puru akar M. incognita dan memacu pertumbuhan tanaman. Isolasi konsorsium bakteri endofit dilakukan dengan metode sterilisasi permukaan dengan alkohol 70% dan natrium hipoklorit 1.0%, kemudian dikulturkan pada media NA (Nutrient Agar). Sebanyak 12 isolat konsorsium bakteri endofit berhasil diisolasi dari akar tanaman keladi, alang-alang, dan putri malu. Konsorsium harus dipastikan aman secara biologis melalui uji hipersensitivitas dan uji hemolisis. Sebanyak 10 isolat konsorsium menunjukkan respon negatif. Sepuluh isolat konsorsium bakteri endofit secara in vitro mampu membunuh larva M. incognita mencapai 67% hingga 100%, memacu pertumbuhan tanaman mencapai 86.57%, menekan jumlah puru akar oleh M. incognita mencapai 75%, dan menekan populasi M. incognita di tanah mencapai 95%. Sebanyak 10 konsorsium bakteri endofit juga dapat memproduksi metabolit sekunder yang berbeda-beda. Hasil penelitian menunjukkan empat konsorsium yaitu PTM3, ALG5, TLS5 dan TLS1 berpotensi sebagai agen biologis untuk mengendalikan M. incognita. Penelitian ini memberikan informasi baru mengenai keefektifan konsorsium bakteri endofit dalam mengendalikan dan memacu pertumbuhan tanaman tomat
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
Sistem Informasi Geografis tata ruang Kota Bengkulu dengan metode waterfall
Full text linkPenelitian ini bertujuan untuk mengembangkan sebuah Sistem Informasi Geografis (SIG) berbasis web untuk mengatasi masalah pengelolaan perizinan bangunan di Kota
Bengkulu, terutama terkait informasi tata ruang yang kurang tersedia bagi masyarakat.
Dalam pengajuan izin mendirikan bangunan, masyarakat sering kali tidak mengetahui kesesuaian lokasi bangunan dengan tata kota yang berlaku. Manfaat dari dari penelitian ini adalah mempermudah akses informasi bagi masyarakat Kota Bengkulu untuk mengetahui bangunan yang sudah memiliki izin.
Metode pengumpulan data yang digunakan dalam penelitian ini antara lain studi literatur dan wawancara. Adapun metode penelitian yang digunakan yaitu waterfall tetapi hanya mengambil Sebagian tahap saja yaitu Requirements and Analysis, Design, Implementation dan Testing. Penggunaan metode waterfall dalam penelitian ini berdasarkan implementasi metode yang lebih terstruktur dan menghasilkan sistem yang berkualitas untuk memenuhi kebutuhan masyarakat dalam menemukan informasi terkait tata ruang kota Bengkulu. Pengujian sistem dilakukan dengan dua metode yaitu
Black Box Testing dan User Experience Questionnaire (UEQ).
Hasil penelitian ini adalah sebuah Sistem Informasi Geografis berbasis website yang memungkinkan masyarakat untuk mendapatkan informasi tentang tata ruang Kota Bengkulu. Sistem ini telah diuji fungsionalitasnya menggunakan metode black box dan dinyatakan layak karena tidak ditemukan kesalahan saat pengujian. Selain itu, hasil
pengujian pengalaman pengguna menggunakan User Experience Questionnaire (UEQ) menunjukkan nilai positif dan diterima dengan baik oleh masyarakat Kota Bengkulu
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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