1,720,975 research outputs found
Sistem Kontrol Kekeruhan dan Temperatur Air Laut Menggunakan Microcontroller Arduino Mega
Get PDFSistem kontrol merupakan bagian yang tidak dapat dipisahkan dalam kehidupan sehari-hari.. Saat ini penerapan sistem kontrol telah menjamah bidang perkebunan, perikanan ataupun pertanian. Dalam penelitian ini, sistem kontrol akan diterapkan pada proses budidaya perikanan seperti budidaya ikan kerapu. Dimana ikan kerapu memiliki habitat dengan kondisi air laut dengan kadar garam 30 - 33 ppt, kadar oksigen ± 4 ppm, temperatur air laut 240 - 310C dan kadar keasaman (pH) air laut 7,6 - 7,8. Kecepatan arus air ideal sekitar 20 hingga 40 cm/detik dimana diperlukan untuk pergantian air dan oksigen serta untuk mengalirkan sisa metabolisme ikan serta pakan ikan keluar. Kondisi habitat ikan ini harus dpat dikontrol dengan baik. Di beberapa tempat budidaya ikan kerapu sistem penjagaan kondisi habitat ini dilakukan secara manual. Dengan adanya sistem kontrol, kondisi habitat ini akan sangat mudah dijaga. Dimana dalam penelitian ini difokuskan pada kemampuan sistem kontrol kekeruhan dan temperatur air laut meliputi fungsi sensor, waktu kerja pengontrol dan kinerja peralatan kontrol. Perangkat pengontrol menggunakan microcontroller Arduino Mega dengan beberapa sensor temperatur dan kekeruhan. Sensor temperatur menggunakan tipe DS18S20 dan untuk kontrol kekeruhan menggunakan sensor turbidity. Dari hasil pengujian didapatkan bahwa sistem kontrol ini dapat mengatur dan menjaga kadar kekeruhan dan temperatur air laut dengan arus 0.215 A untuk satu relay dan 0.33 A untuk 3 relay. Untuk kekeruhan dibutuhkan waktu yang dibutuhkan untuk kontrol aktif yaitu 15 detik dengan indikator kekeruhan dari pakan ikan sebanyak 50 gram dan 10 liter air. Untuk kapasitas yang lain 15 liter air didapatkan waktu kontrol aktif pada 40 detik dengan jumlah pakan 50 gram. Hal ini menunjukkan kontrol kekeruhan bekerja dengan baik dengan semakin keruh air laut semakin cepat bekerja sistem kontrol menggantikan air laut untuk tetap menjaga habitatnya. Waktu yang dibutuhkan untuk menurukan temperatur 1.270C adalah 6 menit 37 detik dengan kapasitas 10 lite
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
ANALISA PEMAKAIAN DAYA SOLAR SEL JENIS MONOCRYSTAL 100 WP SEBAGAI SUMBER LAMPU PENERANGAN DI AREA PANTAI JAKAT KOTA BENGKULU
No full textPencahayaan merupakan salah satu faktor penting dalam desain dan operasionalisasi untuk sarana keselamatan. Kualitas pencahayaan yang baik dari suatu area dipengaruhi oleh berbagai hal dan diharapkan sesuai dengan standar yang
berlaku. Hal-hal seperti kondisi area posisi lampu, jenis lampu, jumlah lampu secara langsung mempengaruhi kualitas pencahayaan di suatu ruangan. Dalam penelitian ini dilakukan pengukuran dan analisa intensitas penerangan,
analisa instalasi listrik serta solusi penghematan energi untuk lampu yang telah terpasang pada area parkiran Pantai Jakat Kota Bengkulu. Metode pengukuran intensitas cahaya penerangan menggunakan SNI 7391 tahun 2008. Analisa
perhitungan dilakukan secara manual. Dari hasil perhitungan, iluminasi yang dihasilkan lampu penerangan telah memenuhi SNI 7391 tahun 2008. Pengurangan jumlah modul solar sel dan baterai merupakan salah satu solusi penghematan ekonomis yang bisa dijadikan alternatif
bagi pemerintah setempat, dengan cara 1 modul solar sel dan 1 baterai bisa dapat menyalakan hingga 3 lampu penerangan dengan intensitas cahaya dan iluminasi yang masih memenuhi SNI 7391 tahun 2008 yakni 318,47 Candela dan 3,13 Lux
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
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