1,720,975 research outputs found
THE EFFECT OF PEAT SUBSIDENCE ON SOIL TAXONOMIC CHANGES IN OIL PALM PLANTATION IN BENGKULU
No full textKonversi lahan gambut ke lahan pertanian khususnya perkebunan seperti Kelapa Sawit terus berlangsung. Segera setelah lahan gambut dibuka, lahan akan mengalami penyusutan (subsidence) yang pada akhirnya akan berakibat pada perubahan kelas dalam klasifikasi tanah. Penelitian ini telah dilakukan di Perkebunan Kelapa Sawit PT Agromuko, Muko-muko, Bengkulu dari bulan Agustus – Desember 2008. Delapan profil dan 85 lubang bor didiskripsi, diambil contoh tanahnya, dan dianalisis untuk menentukan sifat-sifat tanahnya. Data hasil analisis sifat-sifat tanah sebelumnya (tahun 1989) dibandingkan dengan data hasil analisis sifat-sifat tanah saat ini (tahun 2008) untuk mengetahui perubahan sifat-sifat tanah yang terjadi selama lahan dipakai untuk perkebunan kelapa sawit. Hasil penelitian ini menunjukkan bahwa dalam masa pertumbuhan kelapa sawit (20 tahun) areal lahan Histosol menyusut dari 1.870 ha pada tahun 1989 menjadi 992 ha pada tahun 2008. Ini menunjukkan bahwa 972 ha Histosol telah berubah kelas menjadi Entisols karena penyusutan ketebalan gambut. Perubahan kelas tanah ini terjadi diareal yang berbatasan dengan garis pantai, dimana kedalaman gambut relatif dangkal
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
PENERAPAN PERTANIAN PEKARANGAN TANAMAN HORTIKULTURA DENGAN APLIKASI PUPUK ORGANIK DI DESA SRIKUNCORO, BENGKULU TENGAH
Full text linkTerganggunya sektor pertanian menyebabkan ketahanan pangan negara menjadi terganggu juga sehingga memunculkan kerawanan pangan yang akan berefek terhadap pemenuhan kebutuhan masyarakat. Salahsatu solusi adalah dengan pemanfaatan pekarangan untuk kegiatan pertanian. Kegiatan pertanian pekarangan menghadapi kendala antara lain kurangnya antusiasme dan pengetahuan masyarakat mengenai pelaksanaan dan optimalisasi lahan pekarangan tersebut. Kegiatan pengabdian terdiri atas : (1) Edukasi dan kampanye kepada masyarakat mengenai pertanian pekarangan; (2) Membuat role model pertanian pekarangan ditengah masyarakat dengan membuat dan mempraktekkan pemanfaatan pertanian pekarangan secara nyata di Desa Srikuncoro. Kegiatan dilaksanakan pada bulan Juli-Oktober 2021 melalui edukasi dan kampanye lahan pertanian di pekarangan melalui sosialisasi dan praktek langsung. Capaian dari kegiatan ini adalah pemanfaatan lahan pekarangan secara mandiri oleh masyarakat untuk tambahan pemenuhan kebutuhan pangan rumah tangganya
KESESUAIAN LAHAN DAN EVALUASI RUMUS BRAAK UNTUK PENGEMBANGAN TANAMAN KENTANG DI KAKI BUKIT KABA BENGKULU
Full text linkIn order to get optimal growth and production, potato (Solanum tuberosum) should be cultivated on suitable land. Principally, land suitability evaluation is fitting land quality with plant growth requirement. The purposesof this study were: (1) to evaluate land suitability for potato cultivation in Bukit Kaba Foot Slope Bengkulu (BKFSB), and (2) to determine the air temperature gradient for Braak equation in calculating air temperature. Landsuitability evaluation has been conducted by overlying the land characteristic map with the potato growth requirement, to produce land suitability classes with various restriction factors. Temperature gradient was calculated by plotting elevation and air temperature data from 3 weather stations into the Braak equation. Land suitability evaluation with area study of 48.410 ha showed that actual area S (marginally suitable with restriction factor of air temperature 20-23 oC) is 5,150.00 ha (10.63%); S 3ts 3t (marginally suitable with restriction factor of air temperature 20-23 oC and slope of 8-15%) is 1.727,50 ha (3.56%); N (not suitable at present with restriction factor of slope 15-25%) is 2,250.00 ha (4.67%); and N2 1s (permanently not suitable with restriction factor of air temperature >23 oC, slope >25%, and protected forest) is 39.282,50 ha (81.14%). The potential area S is 9,127.50 ha (18.86%) and N2 3t is 39,282.50 ha (81.14%). To extend potato cultivation area in BKFB, new potato cultivars suitable for this area should be selected, and enhancing cultivation system with terrasering especially in slopping land as well ascontour planting should be done. The air temperature gradient in BKFSB area was 0.29 C each 100 m-elevation increase from sea level (0.29 oC hm-1)
LAND SUITABILITY AND BRAAK FORMULA EVALUATION FOR POTATO CULTIVATION IN BUKIT KABA FOOTSLOPE BENGKULU
Full text linkIn order to get optimal growth and production, potato (Solanum tuberosum) should be cultivated on suitable land. Principally, land suitability evaluation is fitting land quality with plant growth requirement. The purposes of this study were: (1) to evaluate land suitability for potato cultivation in Bukit Kaba Foot Slope Bengkulu (BKFSB), and (2) to determine the air temperature gradient for Braak equation in calculating air temperature. Land suitability evaluation has been conducted by overlying the land characteristic map with the potato growth requirement, to produce land suitability classes with various restriction factors. Temperature gradient was calculated by plotting elevation and air temperature data from 3 weather stations into the Braak equation. Land suitability evaluation with area study of 48.410 ha showed that actual area S
(marginally suitable with restriction factor of air temperature 20-23 oC) is 5,150.00 ha (10.63%); S
3ts 3t (marginally suitable with restriction factor of air temperature 20-23oC and slope of 8-15%) is 1.727,50 ha (3.56%); N (not suitable at present with restriction factor of slope 15-25%) is 2,250.00 ha (4.67%); and N2
1s (permanently not suitable with restriction factor of air temperature >23 oC, slope >25%, and protected forest) is 39.282,50 ha (81.14%). The potential area S
is 9,127.50 ha (18.86%) and N 23t is 39,282.50 ha (81.14%). To extend potato cultivation area in BKFB, new potato cultivars suitable for this area should be selected, and enhancing cultivation system with terrasering especially in slopping land as well as contour planting should be done. The air temperature gradient in BKFSB area was 0.29 C each 100 m-elevation increase from sea level (0.29 oC hm)
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
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