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Analisa Sedimentasi Dan Objek Dasar Laut Dari Data Side Scan Sonar Menggunakan Software Sonartrx (Studi Kasus: Perairan Pelabuhan PT Petrokimia Gresik)
Get PDFPT Petrokimia Gresik (Persero) adalah pabrik pupuk berstatus Badan Usaha Milik Negara yang terletak di Kabupaten Gresik, Provinsi Jawa Timur. Perusahaan ini mempunyai fasilitas berupa pelabuhan khusus yang dikelola sendiri atau biasa disebut TUKS (Terminal Untuk Kepentingan Sendiri). Karena pentingnya pelabuhan tersebut, maka diperlukan upaya penyediaan informasi tentang sedimen dasar laut dan objek dasar laut di perairan pelabuhan PT Petrokimia Gresik secara berkala dalam kaitannya untuk menjaga dan memelihara jalur pelayaran tetap aman. Selain itu, penyediaan informasi mengenai sedimentasi dan objek dasar laut digunakan untuk dasar pelaksanaan pengerukan (dredging).
Penelitian ini akan melakukan pengolahan citra side scan sonar dan analisa tentang klasifikasi sebaran sedimen serta identifikasi objek dasar laut di Pelabuhan PT Petrokimia Gresik. Dalam tahap pengolahan citra side scan sonar dilakukan pada software sonartrx dengan melakukan koreksi seperti slant range correction, Time Varying Gain (TVG), dan altitude correction. Setalah itu, dilakukan pembuatan mosaik dari data citra side scan sonar tersebut untuk analisa sebaran sedimen dan objek dasar laut. Untuk analisa sedimen dilakukan dengan cara membagi kelas berdasarkan nilai digital number (DN), sedangkan untuk identifikasi fitur dasar laut menggunakan metode interpretasi kualitatif.
Berdasarkan hasil analisa citra side scan sonar didapatkan sebaran sedimen di dasar laut didominasi oleh sedimen lumpur, dan tanah liat dengan luas 70.053,56 m2 (Tanah Liat) dan 134.593,34 m2 (Lumpur) pada zona 1. Pada zona 2 luasan sedimen sebesar 31.607,15 m2 (Tanah Liat) dan 30.976,50 m2 (Lumpur). Sedangkan untuk zona 3 sedimen didominasi oleh lumpur dan pasir dengan luas 19.075,94 m2 (Lumpur) dan 28.527,01 m2 (Pasir). Sedangkan untuk identifikasi objek dasar laut didapatkan berbagai objek dasar laut berupa kaki jetty dermaga dengan lebar 21,4 m dan panjang 100 m, pipa dasar laut dengan panjang 270 m dan diameter 0,5 m, batu dengan ukuran (3,5 m × 2,5 m), serta tumpukan sedimen dengan luas 3.339 m2.
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PT Petrokimia Gresik (Persero) is a fertilizer factory with the status of a State-Owned Enterprise located in Gresik Regency, East Java Province. This company has facilities such as a special port that is managed by itself or commonly called TUKS (Terminal for Self Interest). Because of the importance of the port, it is necessary to provide information on seabed sediments and seabed objects in the waters of the port of PT Petrokimia Gresik on a regular basis to maintain and maintain safe shipping lanes. In addition, the provision of information on sedimentation and seabed objects is used for the basis for dredging.
This study will perform side scan sonar image processing and analysis of the classification of sediment distribution and identification of seabed objects at the Port of PT Petrokimia Gresik. The side scan sonar image processing stage is done on the SonarTRX software by making corrections such as slant range correction, Time Varying Gain (TVG), and altitude correction. After that, a mosaic was made from the side scan sonar image data for analysis of the distribution of sediments and seabed objects. Sediment analysis is done by dividing the class based on the value of the digital number (DN), while for the identification of seabed features using a qualitative interpretation method.
Based on the results of side scan sonar image analysis, the distribution of sediment on the seabed is dominated by mud and clay sediments with an area of 70,053.56 m2 (Clay) and 134,593.34 m2 (Mud) in zone 1. In zone 2, the sediment area is 31,607.15 m2 (Clay) and 30,976.50 m2 (Mud). Meanwhile, for zone 3 the sediment is dominated by mud and sand with an area of 19,075.94 m2 (Mud) and 28,527.01 m2 (Sand). As for the identification of seabed objects, various seabed objects were obtained such as jetty feet with a width of 21.4 m and a length of 100 m, a seabed pipe with a length of 270 m and a diameter of 0.5 m, stones with a size of (3.5 m × 2 .5 m), and a pile of clay sediments with an area of 3,339 m2
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
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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