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    SEBARAN UKURAN BUTIRAN SEDIMEN GISIK SEKITAR GROIN PANTAI KALASEY

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    ABSTRACTThis study was conducted to examine the effectiveness of groins built along one of the littoral area in the coastal region of Manado. Logically, in this region the marine processes is strong enough to bring out the sediment, which is why in this area was built groin structures as shore protection. Groin is a structure designed to keep beach sand from being transported away by longshore current or to reduce the transportion of sand. This study was conducted by observing the size distribution of beach sediments around the groin in Kalasey beach. The groins on the Kalasey beach analized for their beach sediment samples were 8 units with 22 beach sediment sample collection spaces. Sediment samples were processed in the laboratory through washing and drying. The sediment was then separated with a sieve. Sediment left on each sieve is weighed and the weights were plotted. This study shows that the presence of groins in Kalasey beach was apparently quite effective to withhold the flow of sediment transport because of longshore current in this shore area.Keywords:.sediment size distribution, groin, Kalasey beach, Manado.ABSTRAKPenelitian ini dilaksanakan untuk melihat efektivitas groin yang dibangun di sepanjang litoral salah satu area dalam kawasan pantai Manado. Secara logis, pada kawasan ini proses laut cukup kuat dalam membawa sedimen keluar, itulah sebabnya sehingga pada kawasan ini dibangun struktur pelindung pantai berupa groin. Groin merupakan salah satu bangunan pelindung pantai yang direncanakan untuk menahan angkutan pasir oleh arus susur pantai (longshore current) atau mengurangi angkutan pasir. Penelitian ini dilakukan dengan mengamati keberadaan sebaran ukuran sedimen gisik yang terhampar di sekitar groin tersebut. Rangkaian groin di pantai Kalasey yang dianalisis sampel sedimen gisiknya adalah sebanyak 8 buah groin dengan 22 ruang pengambilan sampel sedimen. Sampel sedimen ditangani di laboratorium dengan melakukan pencucian dan pengeringan. Setelah kering, sedimen dipisahkan dengan ayakan. Sedimen yang tertinggal di masing-masing ayakan ditimbang dan hasilnya digambarkan dalam grafik peubah distribusi granulometri. Penelitian ini menunjukkan keberadaan groin di Kalasey ini tampaknya cukup efektif menahan laju arus susur pantai dalam mengangkut sedimen keluar dari kawasan pantai ini.Kata kunci: distribusi ukuran sedimen, groin, pantai Kalasey, Manado

    KANDUNGAN BAHAN ORGANIK PADA SEDIMEN DI PERAIRAN TELUK BUYAT DAN SEKITARNYA

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    Information on water conditions, such as sedimentation, physical factors, and coral reef ecosystem, needs to be understood that the stakeholders could optimally utilize the the area. This study was aimed to measure the organic content in the sediment content of Buyat Bay and its surroundings. Results found that the terrestrial sediments had higher percentage than from the surrounding waters

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

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    We 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

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We 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
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