1,720,996 research outputs found
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
PENGARUH PEMBERIAN PUPUK ORGANIK TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KANGKUNG DARAT (Ipomea reptans Poir)
Full text linkThe increasing demand for vegetables should be offset by the increasing of production. Kangkung is one of short-lived plants and the price can be reached by various circles of society. Therefore, kangkung can be used as food diversification in Indonesia. To get good quality vegetables and optimal yield, fertilization is a very important technology. Fertilization aims to add nutrients to the plants so that the plants can grow and produce well. The study aims to determine the effect of using organic fertilizer on the growth and yield of kangkung in yards. The study was conducted at Andil Jaya Village, Jelutung District, Jambi City, from March to June 2013. Kangkung planted in polybags size 40x50 cm, using topsoil and organic fertilizers. Research using randomized block design, test the combination treatment of organic fertilizer and soil, namely: (a) 100% soil (control), (B) 75% soil plus 25% organic fertilizer, (C) 50% soil plus 50% organic fertilizer, and (D) 25% soil plus 75% organic fertilizer. Each treatment was repeated 8 (eight) times. The results showed that organic fertilizer plays a role in the growth and yield of kangkung, treatment B and C can provide kangkung with maximum growth and yield.  Keywords : kangkung, organic fertilizer, yard
Pertumbuhan Dan Hasil Beberapa Varietas Bawang Merah Pada Dua Cara Tanam Di Lahan Kering Dataran Rendah Kota Jambi
Full text linkBawang merah (Allium ascalonicum L.) mempunyai peluang untuk dikembangkan di Kota Jambi, hal ini didukung oleh ketersediaan lahan dan permintaan pasar yang cenderung meningkat. Produktivitas bawang merah pada dataran rendah belum dapat menyamai produksi pada dataran tinggi. Permasalah utama belum tersedianya varietas yang mampu beradaptasi pada dataran rendah. Penelitian bertujuan untuk mendapatkan varietas dan cara tanam bawang merah yang adaptif pada dataran rendah Kota Jambi. Penelitian dilaksanakan di Kelurahan Paal Merah Kota Jambi, bulan April sampai Agustus 2015. Penelitian disusun secara faktorial menggunakan rancangan acak kelompok. Faktor pertama penggunaan mulsa dan tanpa mulsa plastik hitam perak (MPHP). Faktor kedua 6 (enam) varietas bawang merah (Biru Lancor, Katumi, Manjung, Ilocos Philip, Super Philip dan Tajuk). Setiap perlakuan diulang tiga kali, penanaman pada bedengan yang berukuran 1 x 10 m, jarak tanam 15 x 15 cm 1 umbi per lobang tanam, masing-masing perlakuan di ulang 3 kali. Hasil penelitian didapatkan bahwa cara tanam menggunakan MPHP memberikan pertumbuhan dan hasil tanaman bawang merah lebih baik dari cara tanam tanpa MPHP. Hasil tertinggi diperoleh pada perlakuan cara tanam menggunakan MPHP 11,74 t/ha, sedangkan tanpa MPHP 9,36 t/ha. Terdapat selisih 2,38 t/ha atau terjadi peningkatan hasil 20,27 %. Empat varietas bawang merah memberikan hasil lebih baik, yaitu Super Philip (12,92 t/ha), Manjung (12,85 t/ha), Ilocos Philip (11,94 t/ha) dan Katumi (11,48 t/ha) dengan perlakuan cara tanam menggunakan MPHP. Sedangkan tanpa MPHP terdapat tiga varietas yang relatif memberikan hasil lebih baik, yaitu Super Philip (10,76 t/ha), Ilocos Philip (10,55 t/ha) dan Manjung (10,13 t/ha)
KERAGAAN VARIETAS DAN GALUR HARAPAN PADI GOGO PADA DAERAH ALIRAN SUNGAI BATANG ASAI SAROLANGUN JAMBI (The Performance of Upland Paddy Varietas and Lines in Batang Asai Watershed Sarolangun Jambi)
Full text linkPotential of upland paddy in dryland watersheds has not been utilized optimally to support increasing food security. Main constraints of upland paddy cultivication in watershed are drought and blast disease disorders. In order to obtain high yielding upland rice varieties which is tolerant to drought  and blast pathogen, five varieties have been cultivated in Batang Asai Sarolangun Jambi watersheds at May-October 2011. These varieties are Inpago 4, Inpago 5, Inpago 6, Limboto, and Towuti, 1 (one) strain expectation (B11579E-MR-7-1-1), and 1 (one) Senimas local varieties. Experiment was arranged in Randomized Block Design (RBD) with 4 replication. Results revealed that the climatic conditions are not conducive for growth and crop production, due to low in rainfall and increased rainy days.These caused unoptimal plant growth, triggered high pests population, and increased in high percentage of empty grains. The high potential was indicated by Limboto, while Towuti showed the lowest yield. High yield of Limboto was supported by high yield component. Compared to other varieties, Limboto also shows high  drought tolerance .  Key words : Upland Rice, watershed, drought, lin
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
PENAMPILAN BEBERAPA GALUR DAN VARIETAS JAGUNG DI LAHAN KERING ( The Performance of Corn Lines and Varieties in Dryland )
Full text linkResearch of agronomic characteristic performance from some promising  lines and varieties of corn in dry land was held in Desa Sebapo, Mestong  Kabupaten Muaro Jambi Provinsi Jambi. The purpose of this study was to determine the agronomic characteristics of some promising lines and varieties of corn in dry land. The research design was Randomized Block design with nine treatments , Lines 08 x Tester 01,  Lines  010 x Tester 01, Lines 011 x Tester 01, Galur 02 x Tester 01, Lines 010 x Tester 02 and  Lines 01 x Tester 02, and 2 corn hybrid C-7 and  Bisi-2 and 1 composite corn varieties  Sukmaraga. and  all treatment repeat 3 times. Variables measured were plant height  at harvest, cob height, cob diameter, cob length, number of rows per cob, number of seeds per row, yield of seed, 100 seed weight and yield per hectare of dry loose. The results showed that Lines 010 x Tester 02 gives the best result 6.20 t/ha. Key words: Maize, agronomic characteristics, dry lan
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