1,721,331 research outputs found
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
Classification of Continuous Sky Brightness Data Using Random Forest
No full textSky brightness measuring and monitoring are required to mitigate the negative effect of light pollution as a byproduct of modern civilization. Good handling of a pile of sky brightness data includes evaluation and classification of the data according to its quality and characteristics such that further analysis and inference can be conducted properly. This study aims to develop a classification model based on Random Forest algorithm and to evaluate its performance. Using sky brightness data from 1250 nights with minute temporal resolution acquired at eight different stations in Indonesia, datasets consisting of 15 features were created to train and test the model. Those features were extracted from the observation time, the global statistics of nightly sky brightness, or the light curve characteristics. Among those features, 10 are considered to be the most important for the classification task. The model was trained to classify the data into six classes (1: peculiar data, 2: overcast, 3: cloudy, 4: clear, 5: moonlit-cloudy, and 6: moonlit-clear) and then tested to achieve high accuracy (92%) and scores (F-score = 84% and G-mean = 84%). Some misclassifications exist, but the classification results are considerably good as indicated by posterior distributions of the sky brightness as a function of classes. Data classified as class-4 have sharp distribution with typical full width at half maximum of 1.5 mag/arcsec2, while distributions of class-2 and -3 are left skewed with the latter having lighter tail. Due to the moonlight, distributions of class-5 and -6 data are more smeared or have larger spread. These results demonstrate that the established classification model is reasonably good and consistent
UPAYA MENINGKATKAN PELAYANAN KEAGENAN DI PT. PANCA GLOBAL ENERGI CABANG MERAK
Get PDFABSTRAKSI Gigih Prihandoko, 541711306472, 2021, “Upaya Meningkatkan Pelayanan Keagenan Di PT. Panca Global Energi Cabang Merak”, Program Diploma IV, Tata Laksana Angkutan Laut dan Kepelabuhan, Politeknik Ilmu Pelayaran Semarang, Pembimbing 1 dan 2: Sri Purwantini, SE, S.Pd., MM dan Andy Wahyu Hermanto, MT Untuk mendukung kegiatan tranportasi laut khususnya dibidang keagenan kapal, maka dalam skripsi ini peneliti menguraikan tujuan penelitian ini adalah untuk mengetahui pelayanan keagenan di PT. Panca Global Energi, untuk mengetahui kendala dalam pelayanan keagenan serta untuk mengetahui upaya yang dilakukan untuk meningkatkan pelayanan keagenan di PT. Panca Global Energi. Dalam aktivitas pelayanan keagenan kapal harus menjalankan tugasnya dengan maksimal supaya dapat bersaing dengan perusahaan pelayaran lain khusunya dalam penguasaan bidang layanan jasa berbasis inaportnet Penelitian menggunakan metode penelitian deskriptif kualitatif data penelitian diperoleh melalui menguraikan objek data yang diperoleh melalui observasi, wawancara dan studi dokumentasi kemudian data yang diperoleh dianalisis dengan menggunakan teknik analisis data kualitatif. Hasil penelitian menunjukkan bahwa pelayanan jasa keagenan di PT. Panca Global Energi pelaksanaannya sudah baik namun harus lebih dtingkatkan lagi supaya dapat bersaing dengan perusahaan pelayaran lain yang bergerak dibidang jaga keagenan kapal. Berdasarkan hasil dari penelitian ini dapat disimpulkan bahwa PT. Panca Global Energi harus memiliki karyawan yang lebih kompeten supaya mampu memberikan pelayanan yang maksimal serta memuaskan bagi perusahaan pemilik kapal dan menyerahkan kapalnya untuk selalu dilayani saat kembali
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
ANALISIS TURUNNYA TEKANAN MINYAK HYDRAULIC PADA WINDLASS DI MV. TANTO JAYA
Get PDFAndang Prihandoko, NIT. 51145461.T, 2018, “Analisis Turunnya Tekanan Minyak Hydraulic Pada Windlass di MV. Tanto Jaya”, Program Diploma IV, Teknika, Politeknik Ilmu Pelayaran Semarang, Pembimbing I: Abdi Seno, M.Si., M.Mar.E, dan Pembimbing II: Febria Surjaman, MT.
Mesin Windlass merupakan suatu alat yang di gunakan untuk menarik dan menurunkan jangkar dan biasanya dipakai juga untuk menambatkan tali pada saat kapal merapat ke dermaga, Mesin Windlass dapat di operasikan dengan energi listrik, energi sistem hidrolik, energi uap. Mesin Windlass mempunyai kemampuan untuk mengangkat jangkar pada kecepatan rata-rata 5-6 fathoms/menit dari kedalaman 30-60 fathoms. Mesin Windlass juga mempunyai tekanan normal yaitu 5-6.5 bar (500-650 kPa). Pada beberapa kapal, mesin windlass digunakan sebagai alat emergency dan dapat dikombinasikan dengan mooring winch dan warping head pada container. Mesin Windlass terdiri dari jangkar, rantai, windlass, pompa hydraulic, motor listrik. Penelitian ini menggunakan metode deskriptif kualitatif dengan mendeskripsikan secara terperinci penyebab terjadinya penurunan tekanan minyak Hydraulic pada Windlass di MV.Tanto Jaya. Dalam menentukan prioritas masalah untuk diselesaikan, peneliti menggunakan suatu alat pendekatan yaitu metode gabungan fishbone dan fault tree analysis. Dimana metode fishbone digunakan untuk mencari faktor penyebab dari masalah tersebut dan metode fault tree analysis digunakan untuk mencari dan mendapatkan akar penyebab permasalahannya. Selain itu juga digunakan untuk menentukan upaya apa saja yang harus dilakukan untuk mengatasi masalah tersebut. Pada bagian akhir skripsi ini dapat disimpulkan bahwa terjadinya penurunan tekanan minyak Hydraulic di sebabkan oleh kerusakan pada gear pump dikarenakan terjadi keausan pada gear didalam gear pump. Selain kerusakan pada gear pump turunnya tekanan minyak hydraulic pada windlass juga disebabkan oleh pecahnya pipa minyak hydraulic. Saran untuk memecahkan masalah ini adalah mengganti gear yang sudah aus dengan gear yang baru dan mengganti pipa yang baru.
Kata Kunci: Mesin Windlass, turunnya tekanan ol
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
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