1,720,970 research outputs found
EFISIENSI TEKNIS (STABILITAS) KAPAL IKAN TRADISIONAL DI KABUPATEN BATANG DAN DEMAK JAWA TENGAH
Full text linkNorth Java Coastal is a coastal region that almost of its citizen are fisherman who produces traditional wooden boat. The quality of traditional wooden boats that made by the fisherman were physically good enough and the amount of boats are also increasing in accordance with the increase of amount of citizen in this region. But, in order to improve the fish catches by fisherman, it is needed to use boats with good stability.
This study is aimed to evaluate the stability of boats in industries who produces traditional wooden boats located in Batang and Demak regencies that since 1980 has already made these boat with the range of their power are between 4 — 100 Gross Tonnage. Analysis of wooden boat stability was done by mathematics calculation via several steps of method, Lines Plan, Bonjean, Hydrostatic, and Stability.
Based on the analytical result of the capability of stability, it was found about the disadvantages and advantages of traditional wooden boat stability (IMO and FAO standard). The stability of wooden boats made in Batang shows positive result (good) because the comparison between GMO and GZ has already involved to IMO and FAO standard with maximum fish catches loaded of 20.5 tones. The stability of boat made in Demak is also positive, but less perfect than that of made in Batang. This is because the boat is easy to roll and uncomfortable especially when the boat is empty with the machine above the deck and causes the MGO point is high.
In correlation with the background and analytical result that has been done in this experiment it can be advice that the fisherman who made wooden boat need an effort to improve their skill. This can be done via training and education in industries and also visiting the boat factory that already use a modern technology. While to the government or the institution who are responsible in this area it is hoped to facilitate the training about technology in the production of traditional wooden boat making as well as possible in order to reach a good stability of boats.
Pantai utara Jawa adalah wilayah yang banyak dihuni oleh pan nelayan dan juga sebagai pembuat kapal kayu tradisional. Kapal — kapal jkan hasil rancang bangun secara tradisional tersebut sebenarnya secara fisik cukup baik dan jumlahnya pun terns meningkat selaras dengan meningkatnya jumlah penduduk nelayan di daerah tersebut. Tetapi untuk meningkatkan hasil tangkapan para nelayan, sangat dibutuhlcan kapal — kapal yang stabilitasnya cukup baik.
Untuk mengetahui stabilitas tersebut maka, dilakukan penelitian pada industri pembuat kapal tradisional di Kabupaten Batang dan Demak, yang sejak tahun 1980 membuat kapal — kapal kayu dengan ukuran 4 Gross Tonnage sampai dengan 100 Gross Tonnage. Analisa stabilitas kapal kayu dilaksanakan dengan, perhitungan matematik melalui beberapa tahapan metode, Lines Plan, Bonjean, Hidrostatik dan Stabilitas.
Berdasarkan hasil analisis kemampuan stabilitas dapat diketahui kekurangan dan kelebihan stabilitas kapal tradisional.( standar IMO dan FAO ). Stabilitas kapal Batang positif (Baik) karena perbandingan antara GMO dengan GZ memenuhi standar IMO maupun FAO.dengan muatan hasil tangkapan maksimum 20,5 ton.. Stabilitas kapal Demak positif tetapi kurang sempurna karena perbandingan antara GMO dengan GZ tidak sesuai dimana GMO sangat tinggi sehingga kapal mudah oleng dan tidak nyaman terutama pada kondisi kapal kosong,dengan mesin diatas Deck mengakibatkan titik MGO tinggi.
Berkaitan dengan latar belakang dan hasil analisis yang dilakukan dapat dibuatkan saran untuk pan nelayan pembuat kapal kayu, diperlukan upaya-upaya untuk meningkatkan SDM para pekerjanya dibidang teknik pembuatan kapal kayu, melalui pelatihan - pelatihan atau kunjungan ke industri kapal kayu yang sudah maju.
Sedangkan kepada Pemerintah / Dinas yang terkait disarankan untuk mengadakan pelatihan pemahaman teknik pembuatan kapal kayu secara baik dan benar untuk mencapai stabilitas kapal yang baik
PENGEMBANGAN BAHAN POLYURETHANE PADA ROMPI PELAMPUNG
Full text linkRompi pelampung harus bisa menahan beban berat badan orang yang menggunakannya. Sesuai dengan fungsinya, rompi pelampung dibuat dari bahan yang ringan sehingga mudah terapung. Pergantian bahan apung dari styrofoam ke polyurethane adalah untuk mencapai maksud tersebut. polyurethane adalah bahan yang memiliki rapat massa yang lebih kecil dari gabus atau styrofoam. Permasalahan yang timbul dari penggunaan bahan apung yang berbeda ini, adalah ; berapa besar perbedaan daya apung antara bahan styrofoam (gabus) dengan polyurethane pada rompi pelampung serta efisiensinya. Penelitian ini bertujuan untuk melihat perbedaan kedua bahan rompi pelampung tersebut dalam menerima beban berat, sehingga dapat diperkirakan efisiensinya. Pengujian dilakukan dengan memberikan pembebanan pada kedua jenis bahan tersebut. Pembebanan dilakukan dengan menggunakan beban berat yang sama path kedua bahan uji, yaitu sebesar 234,575 gr. Berat beban total adalah jumlah berat dari berat beban ditambah berat bahan. Bagian bahan uji yang terendam atau yang berada di atas pennukaan air setelah bahan uji diberi beban, menunjukkan besar daya apungnya atau kemampuannya dalam menahan beban berat. Bereasarkan hasil pengujian diperoleh bahwa bahan polyurethane memiliki daya apung yang lebih baik dari bahan styrofoam, dengan efisiensi 3,6 % untuk spesimen kecil (bahan uji) berukuran 10 x 7,5 x 5,5 dalam cm. Perubahan efisiensi secara signifikan masih diharapkan dapat terjadi dengan cars menetapkan ukuran bahan uji sesuai dengan peaggunaun dilapangan clan pengurangan densitas bahan polyurethane menjadi lebih kecil pada waktu proses pengecoran
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
ANALISIS KELAYAKAN USAHA PEMBUATAN KAPAL PERIKANAN BERBAHAN DASAR KAYU DI PPP KLIDANGLOR, DESA KARANGASEM KECAMATAN BATANG JAWA TENGAH
Full text linkBiaya produksi kapal perikanan berbahan kayu tergantung jenis kayu yang digunakan. Penelitian ini dilakukan dengan tujuan memberikan informasi tentang gambaran biaya yang dibutuhkan dalam pembuatan kapal kayu, mengetahui biaya penyusutan dan perawatan kapal kayu dan mengkaji kelayakan usaha pembuatan kapal kayu. Penelitian ini menggunakan metode deskriptif. Analisis data yang digunakan di bagi tiga yaitu perhitungan biaya produksi, perhitungan biaya penyusutan dan perawatan kapal, dan analisis usaha pembuatan kapal. Berdasarkan hasil penelitian diketahui bahwa biaya produksi yang dikeluarkan kapal kayu dengan ukuran kisaran antara 30 GT – 50 GT sebesar Rp.424.437.500,00 dan kapal dengan ukuran kisaran antara 50 GT – 80 GT sebesar Rp.930.437.500,00 namun biaya tersebut tidak termasuk biaya mesin dan instalasinya. Berdasarkan perhitungan yang telah dilakukan didapatkan bahwa nilai R/C, PP, NPV, IRR, Net B/C dengan ukuran kapal kisaran antara 30 GT – 50 GT berturut – turut 2,9, 0,35, 119.500.000, 51%, 4,2 dan pada ukuran kapal kisaran antara 50 GT – 80 GT berturut – turut 1,5, 1,05, 39.440.000, 50%, 2,7. Hasil perhitungan tersebut melebihi batas kelayakan usaha, sehingga hasil tersebut menunjukkan bahwa usaha galangan kapal di Batang layak untuk dilanjutkan dan dikembangkan
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