1,720,956 research outputs found
Analisis Ketinggian Banjir Menggunakan Penerapan Model Hybrid Singular Spectrum Analysis – Artificial Neural Network Pada Peramalan Curah Hujan
No full textCurah hujan adalah kejadian banyaknya hujan yang turun disuatu daerah dalam jangka waktu tertentu. Curah hujan merupakan salah satu unsur iklim yang memiliki karakteristik berbeda – beda pada wilayah tropis. Dampak dari curah hujan yang tinggi adalah banjir dengan ketinggian air yang besar. Provinsi Jakarta merupakan salah satu wilayah memiliki ketinggian banjir besar yang berbatasan dengan Bogor, Tangerang, dan Bekasi. Curah hujan di wilayah yang berbatasan dengan Jakarta juga memiliki pengaruh terhadap ketinggian banjir. Hal itu dikarenakan kurangnya daerah resapan dan meluapnya air sungai sehingga mengalir ke wilayah Jakarta. Penelitian ini bertujuan untuk mengetahui variabel curah hujan yang berpengaruh pada ketinggian banjir menggunakan metode regresi kuantil dan melakukan peramalan curah hujan dan ketinggian banjir menggunakan metode hybrid SSA-ANN dalam 5 tahun mendatang. SSA-ANN merupakan metode hybrid Singular Spectrum Analysis (SSA) dan Artificial Neural Network (ANN) yang dapat memperoleh peramalan curah hujan dimasa mendatang yang digunakan untuk meramalkan ketinggian banjir di Jakarta. Berdasarkan metode SSA-ANN, SSA berguna untuk mendekomposisi data curah hujan menjadi komponen tren, musiman, dan noise. Komponen tren diramalkan menggunakan metode Recurrent Forecasting (R-Forecasting) sedangkan komponen musiman dan noise diramalkan menggunakan metode ANN. Data yang digunakan pada penelitian ini adalah data curah hujan Jakarta, Bogor, Tangerang, dan Bekasi serta data banjir Jakarta periode Januari 2014 – Desember 2020. Secara keseluruhan, kesimpulan yang diperoleh dalam penelitian ini ketinggian banjir Jakarta dipengaruhi oleh curah hujan Bogor dan Tangerang dengan AIC terkecil sebesar 823,1119. Peramalan curah hujan Bogor menghasilkan nilai MAPE sebesar 44,434% peramalan curah hujan Tangerang menghasilkan nilai MAPE 31,769%. Dalam peramalan ketinggian banjir Jakarta, ketinggian banjir tertinggi terjadi pada bulan November 2021, sedangkan ketinggian banjir terendah terjadi pada bulan Mei 2025.
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Rainfall is the amount of rain that falls in an area within a certain period of time. Rainfall is one of the elements of climate that has different characteristics in the tropics. The impact of high rainfall is flooding with large water levels. Jakarta Province is one of the areas with large flood heights bordering Bogor, Tangerang and Bekasi. Rainfall in areas bordering Jakarta also has an influence on the height of flooding. This is due to the lack of infiltration areas and the overflow of river water so that it flows into the Jakarta area. This study aims to determine the rainfall variables that affect flood heights using the quantile regression method and to forecast rainfall and flood heights using the hybrid SSA-ANN method in the next 5 years. SSA-ANN is a hybrid Singular Spectrum Analysis (SSA) and Artificial Neural Network (ANN) method that can obtain future rainfall forecasts used to forecast flood heights in Jakarta. Based on the SSA-ANN method, SSA is useful for decomposing rainfall data into trend, seasonal, and noise components. The trend component is forecasted using the Recurrent Forecasting (R-Forecasting) method while the seasonal and noise components are forecasted using the ANN method. The data used in this study are rainfall data for Jakarta, Bogor, Tangerang, and Bekasi and flood data for Jakarta for the period January 2014 - December 2020. Overall, the conclusion obtained in this study is that the height of the Jakarta flood is influenced by Bogor and Tangerang rainfall with the smallest AIC of 823,1119. Bogor rainfall forecasting produces a MAPE value of 44,434% while Tangerang rainfall forecasting produces a MAPE value of 31,769%. In forecasting the Jakarta flood level, the highest flood level occurs in November 2021, while the lowest flood level occurs in May 2025
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
No full textWe 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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