1,720,955 research outputs found
Rancang Bangun Sistem Kontrol dan Monitoring Alat UkurBesaran Listrik Berbasis IoT (Internet of Things)
Full text linkAll work and human needs at this time are very dependent on the presence of electrical energy, especially on household needs. Human negligence in the use of electrical energy will lead to waste which also has an impact on increasing the cost of using electrical energy. Therefore, a tool is needed that is capable of monitoring, controlling the use of electrical energy and is able to limit the current usage of the load, even though the user of electrical energy is not at home. Of course, to make this tool you need a voltage sensor, current sensor, relay, Arduino UNO Wifi, and a power supply. The voltage sensor used is ZMPT101B which functions to read the voltage value, the current sensor used is ACS712 which functions to read the current value, the relay functions to limit the current value in a way when the current sensor reads the current value at the load and then the author sets it in the program by limiting the current may enter by 10 A and if it exceeds the current limit this monitoring device will turn off, the Arduino UNO Wifi functions to process data read from the voltage and current sensors, and the WIFI module functions to send data to the Blynk Cloud server so that it can be viewed with an internet network. From the results of the control test by turning on and off the tool with a radius of 12 km. The test results were measured for 2 hours on the load of incandescent lamps, televisions, fans, laptop chargers, dispensers, irons and Rice Cookers using ZMPT101B and ACS712 resulting in a voltage measurement error of 0.93% and a current measurement error of 1.14
Studi Analisis Kemampuan Lightning Arrester Sebagai Proteksi Transformator Daya pada Gardu Induk Padang Luar ULTG Bukit Tinggi
Full text linkThe substation has very important equipment, namely the transformer, so the transformer must be installed a protection device to minimize interference. These disturbances include overvoltage disturbances due to lightning surges. The protection equipment installed is a lightning arrester that functions to drain overvoltage disturbances caused by lightning strikes directly to the ground, so as not to damage the transformer. This research focuses on substation equipment, namely a tube type lightning arrester with the Siemens brand and has type 3EPG 138-2PF31-2XA1-Z which is connected to a 60 MVA Unindo brand power transformer. Good protection is obtained when the lightning arrester is placed as close as possible to the power transformer terminals. With mathematical calculations for the maximum distance of the line wire length between the lightning arrester and the power transformer is as far as 103.48 meters, while in reality in the field the distance of the line wire length between the lightning arrester and the power transformer at the Padang Luar 150 kV substation is as far as 51 meters, and for the results of the calculation of the maximum distance of the line wire length between the lightning arrester and the power breaker a value of 127.45 meters is obtained, while the distance of the line wire length between the lightning arrester and the power breaker installed at the Padang Luar 150 kV substation is 65 meter
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 Pengaruh Faktor Daya Terhadap Efisiensi Pemakaian Energi Listrik Pada Pelanggan Golongan Tarif I-3 Pt. PLN (Persero) UP3 Padang
Full text linkPemakaian beban induktif yang dominan pada pelanggan industri menyebabkan faktor daya rendah, yang berdampak pada pemborosan energi dan denda biaya dari PLN apabila nilainya ? 0,85. Kondisi ini tidak hanya menurunkan efisiensi sistem, tetapi juga menambah beban biaya operasional pelanggan, terutama golongan tarif I-3. Salah satu solusi efektif adalah pemasangan kapasitor bank untuk meningkatkan faktor daya. Penelitian ini bertujuan menganalisis nilai faktor daya pelanggan, menghitung potensi denda, dan menentukan kapasitas optimal kapasitor bank berdasarkan data pelanggan PT. Citra Karya Prima di Padang selama tahun 2022, agar tercapai efisiensi energi dan penghematan biaya
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