1,720,954 research outputs found
PERANCANGAN ALAT OTOMATIS PENYEMPROT HAMA TANAMAN PADI MENGGUNAKAN SENSOR PIR DENGAN SUMBER PV DAN BATERAI
No full textProduksi tanaman padi di Indonesia khususnya Jember, Jawa Timur banyak
mengalami penurunan akibat adanya serangan hama padi seperti hama walang sangit,
kepik hijau dan belalang. Penelitian mengenai serangan hama walang sangit, kepik
hijau,dan belalang pada tanaman padi ini bertujuan untuk mengetahui tingkat
serangan hama yang menyerang tanaman padi di lahan persawahan. Penelitian ini
menggunakan metode eksperimen (percobaan) langsung dilapangan dengan
mengaplikasikan toxafine 400 ec pestisida kontak yang menggunakan dimetot
sebagai bahan aktif. Sistem kendali menggunakan solar cell, baterai, mikrokontroler
Atmega 8535, Sensor PIR, dan Sensor LDR,. Secara keseluruhan prinsip kerja alat ini
yaitu, terdapat lampu DC yang berfungsi untuk mengundang hama supaya mendekat
pada alat penyemprot kemudian sensor PIR akan mendeteksi hama yang mendekat,
jika hama terdeteksi oleh sensor PIR maka sprayer menyemprot otomatis dengan
bantuan motor pompa DC. Dilakukan lima kali pengujian untuk setiap sensor dan
didapatkan nilai yang berbeda antara pembacaan faktual dan pembacaan sensor.
Pengujian pertama pada sensor PIR, perbedaan data disebabkan oleh pembacaan
nilai ukuran masing-masing hama berbeda. Dari perbedaan data diatas rata-rata nilai
error persen pembacaan sensor PIR untuk belalang 6.3%, kepik hijau 9.5% dan
walang sangit 8.2% untuk lima kali pengujian. Kesalahan yang dihasilkan dari
perbandingan pembacaan disebabkan oleh posisi dan jarak hama dalam proses
penyemprotan yang berbeda pada saat menghadap ke sensor PIR
PERANCANGAN ALAT OTOMATIS PENYEMPROT HAMA TANAMAN PADI MENGGUNAKAN SENSOR PIR DENGAN SUMBER PV DAN BATERAI
No full textProduksi tanaman padi di Indonesia khususnya Jember, Jawa Timur banyak
mengalami penurunan akibat adanya serangan hama padi seperti hama walang sangit,
kepik hijau dan belalang. Penelitian mengenai serangan hama walang sangit, kepik
hijau,dan belalang pada tanaman padi ini bertujuan untuk mengetahui tingkat
serangan hama yang menyerang tanaman padi di lahan persawahan. Penelitian ini
menggunakan metode eksperimen (percobaan) langsung dilapangan dengan
mengaplikasikan toxafine 400 ec pestisida kontak yang menggunakan dimetot
sebagai bahan aktif. Sistem kendali menggunakan solar cell, baterai, mikrokontroler
Atmega 8535, Sensor PIR, dan Sensor LDR,. Secara keseluruhan prinsip kerja alat ini
yaitu, terdapat lampu DC yang berfungsi untuk mengundang hama supaya mendekat
pada alat penyemprot kemudian sensor PIR akan mendeteksi hama yang mendekat,
jika hama terdeteksi oleh sensor PIR maka sprayer menyemprot otomatis dengan
bantuan motor pompa DC. Dilakukan lima kali pengujian untuk setiap sensor dan
didapatkan nilai yang berbeda antara pembacaan faktual dan pembacaan sensor.
Pengujian pertama pada sensor PIR, perbedaan data disebabkan oleh pembacaan
nilai ukuran masing-masing hama berbeda. Dari perbedaan data diatas rata-rata nilai
error persen pembacaan sensor PIR untuk belalang 6.3%, kepik hijau 9.5% dan
walang sangit 8.2% untuk lima kali pengujian. Kesalahan yang dihasilkan dari
perbandingan pembacaan disebabkan oleh posisi dan jarak hama dalam proses
penyemprotan yang berbeda pada saat menghadap ke sensor PIR
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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