1,720,961 research outputs found
Analisis Perubahan Morfologi Garis Pantai Akibat Tsunami di Teluk Palu Menggunakan Data Citra Sentinel-2
No full textInformasi perubahan garis pantai sangat penting dalam berbagai kajian pesisir, misalnya; rencana pengelolaan kawasan pesisir, perwilayahan/zonasi bahaya, studi abrasi-akresi, serta analisis dan pemodelan morfodinamika pantai. Salah satu penyebab ternjadinya perubahan morfologi garis pantai adalah oleh fenomena tingginya gelombang akibat terjadinya tsunami. Teluk Palu mengalami terpaan gelombang Tsunami yang terjadi pada 28 September 2018. Pesisir pantai sepanjang teluk palu mengalami berubahan yang cukup signifikan akibat adanya dampak Tsunami tersebut. Dalam penelitian ini, pemanfaatan teknologi penginderaan jauh secara temporal dan spasial digunakan dalam identifikasi perubahan garis pantai. Metode yang digunakan adalah interpretasi terhadap Normalized Difference Water Index (NDWI) pada citra Sentinel-2 untuk mengidentifikasi garis pantai serta menganalisis besarnya perubahan yang terjadi. Hasil analisis perubahan garis pantai yang terjadi akibat Tsunami setelah dilakukan tumpang susun terhadap data sebelum dan setelah terjadi Tsunami diperoleh panjang garis pantai sebelum Tsunami 42,633 km dan setelah Tsunami 40,718 km dimana terjadi perubahan pajang garis pantai 1,915 km, serta luas abrasi 1,021 km2.
Coastline change information is very important in various coastal studies, for example; coastal area management plans, hazard zoning, abrasion-accretion studies, as well as coastal morphodynamical analysis and modeling. One of the causes of coastline morphology change is the phenomenon of high waves due to the tsunami. Tsunami waves has exposed Palu Bay on September 28, 2018. The coast along the Palu bay experienced significant changes due to the impact of the Tsunami. In this study, temporally and spatially remote sensing technology are used to identify coastline changes. The Normalized Difference Water Index (NDWI) method used to interpret Sentinel-2 image to identify and analyze the coastline changes that happened. An analysis of the results of coastline changes that occurred as a result of the Tsunami after overlapping the data before and after the Tsunami were obtained that the length of the coastline before the Tsunami was 42.633 km and after the Tsunami was 40.718 km where there was a change in coastline length of 1.915 km, and an area 1.021 km2 of abrasion
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Pemetaan Sebaran Nilai Koefisien Aliran Permukaan Soil Conservation Services Curve Number Pada Daerah Aliran Sungai Karangmumus Kota Samarinda
Get PDFPenelitian ini bertujuan memetakan dan menganalisis nilai Soil Conservation Service Curve Number (SCS-CN) di Daerah Aliran Sungai (DAS) Karangmumus untuk menilai potensi limpasan permukaan dan risiko banjir. Data litologi, tutupan lahan, dan karakteristik tanah diolah menggunakan Sistem Informasi Geografis (SIG) untuk menghasilkan peta sebaran nilai CN. Hasil menunjukkan nilai rata-rata CN sebesar 73,88, mengindikasikan potensi limpasan permukaan yang cukup tinggi, terutama di area dengan tanah bertekstur halus dan tutupan lahan terdegradasi akibat aktivitas manusia. Variasi spasial nilai CN dipengaruhi oleh heterogenitas litologi dan penggunaan lahan, yang berdampak pada infiltrasi dan erosi. Rekomendasi konservasi meliputi penerapan teknologi bioengineering, pembangunan sumur resapan, dan pengembangan agroforestri untuk mengurangi limpasan dan risiko banjir. Monitoring dan evaluasi berkala dengan teknologi penginderaan jauh disarankan untuk mendukung pengelolaan DAS yang berkelanjutan. Penelitian ini memberikan dasar ilmiah penting bagi pengelolaan sumber daya air dan mitigasi bencana di DAS Karangmumus
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
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