1,720,955 research outputs found
Pendeteksian Gerakan Menggunakan Transduser Ultrasound dengan Metoda Pembandingan Pola Gema
Full text linkPada tulisan ini kami mengusulkan metoda pendeteksi gerakan. Pendeteksian dilakukan dengan cara membandingkan dua buah pola gema dalam interval waktu tertentu dan jeda antara pola gema. Perbedaan pola gema menunjukkan terjadinya gerakan dari benda-benda di area deteksi sensor. Dengan metoda pembandingan ini, sensor menjadi sensitif terhadap gerakan atau perubahan posisi setiap objek yang berada disekitarnya. Hasil yang diperoleh memperlihatkan bahwa sensor ini secara khusus lebih sensitif dibandingkan sensor PIR dalam mendeteksi gerakan-gerakan kecil. Pada prakteknya metoda ini telah mampu mendeteksi beberapa gerakan tubuh manusia seperti: dari mulai berjalan; duduk; berbicara; hingga gerak respirasi tubuh
Pengaturan Kecepatan Putaran Direct Current (DC) Gearhead Motor Pada Roda Pengendali Arah di Kursi Roda Elektrik Menggunakan Direct Current (DC) Chopper tanpa Filter
No full textDirect Current (DC) gearhead motor digunakan sebagai pengendali arah roda di rangka kursi roda elektrik. Kecepatan putaran DC gearhead motor tersebut harus dapat diatur agar tidak mengganggu kenyamanan dan juga tidak membahayakan keselamatan pengguna kursi roda elektrik. Rangkaian pengatur kecepatan menggunakan metoda DC Chopper tanpa filter berbasis mikrokontroler ATmega8 yang digunakan untuk mengatur kecepatan putaran gearhead motor tersebut. Menggunakan DC Chopper jenis Buck Converter yang mengubah nilai tegangan input ke dalam DC gearhead motor berdasarkan nilai resistansi yang diberikan. Hasilnya, kecepatan putaran roda pengendali dengan kondisi kursi roda elektrik tanpa beban orang yang tercepat adalah 33,3 RPM (Rotation Per Minute) dan yang paling lambat adalah 9,2 RPM. Dengan diketahuinya range kecepatan putaran gearhead motor maka dipilih kecepatan yang cukup untuk memberikan kenyamanan dan keselamatan pengguna kursi roda elektrik
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
Lampu Pintar Berbasis LED dengan Multi Sensor
Full text linkThe lamp that use to give lighting is helped people do their activity. Probably its will effective when be controlled on automatic for helping people. In this paper, we make a prototype of smart lamp that integrated with sensor, which is given information of people and lighting confirmation, to turn on or turn off its automatically. In addition, the sensor calculates and balances flash and ambient light exposure to decrease the light, so that can make energy efficiently in use. PIR and Ultrasonic sensor is preferred to detect people condition in one place and LDR is preferred to detect intensity of light.In experimental system of smart lamp obtain good condition where the average of illuminance 257,6 which is detected big or little move people and allowed constantly light of room, within error maximum about 5.59% or 5.65.In this paper, we propose a LED-based smart lamp prototype that integrated with sensor. The smart lamp use information of people and lighting confirmation, to turn on or turn off the lamp automatically. In addition, the sensor calculates and balances flash and ambient light exposure to decrease the light, so that can make energy efficiently in use. PIR (Passive Infrared Receiver) and Ultrasonic sensor is preferred to detect people condition in one place and LDR (Light Dependent Resistant) is preferred to detect intensity of light. In experimental system of smart lamp obtain good condition where the average of illuminance 257,6 lux. The smart lamp can detect large and small movements caused by human beings and can provide a constant room lighting.keywords: Smart lamp, Presence detection, Ultrasonic Pada tulisan ini, sebuah lampu pintar berbasis LED berbasis integrasi sensor deteksi keberadaan dan sensor deteksi cahaya diusulkan. Sensor digunakan untuk menyalakan atau memadamkan lampu secara otomatis berdasarkan keberadaan orang disekitarnya. Selain itu, lampu pintar juga dapat mengatur tingkat pencahayaan yang dibutuhkan dengan memperhatikan cahaya ambien untuk mencegah terjadinya pencahayaan yang berlebih guna menghindari energi yang terbuang sia-sia. Deteksi keberadaan menggunakan penggabungan dua buah sensor yaitu PIR (Passive Infrared Receiver) dan Ultrasonik, sedangkan deteksi cahaya menggunakan sensor LDR (Light Dependent Resistant). Hasil pengujian mendapatkan sistem lampu penerangan bekerja dengan baik dan dapat memberikan pencahayaan sebesar 257,6 lux. Lampu Pintar tersebut sudah dapat mendeteksi gerakan besar dan kecil yang ditimbulkan oleh manusia dan dapat memberikan pencahayaan ruangan yang konstan.kata kunci: Lampu pintar, Deteksi keberadaan, Ultrasoni
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
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