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Hasil Pencarian

Ditemukan 6656 dokumen yang sesuai dengan query
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Nickelson, Liudmila
"This book presents the theory of electromagnetic (EM) waves for upper undergraduate, graduate and PhD-level students in engineering. It focuses on physics and microwave theory based on Maxwells equations and the boundary conditions important for studying the operation of waveguides and resonators in a wide frequency range, namely, from approx. 10--9 to 10--16 hertz. The author also highlights various current topics in EM field theory, such as plasmonic (comprising a noble metal) waveguides and analyses of attenuations by filled waveguide dielectrics or semiconductors and also by conducting waveguide walls. Featuring a wide variety of illustrations, the book presents the calculated and schematic distributions of EM fields and currents in waveguides and resonators. Further, test questions are presented at the end of each chapter."
Singapore: Springer Nature, 2019
e20508047
eBooks  Universitas Indonesia Library
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Afsarimanesh, Nasrin
"This book presents the design of a robust, portable and low-cost PoC sensing system for the early detection of bone loss. The device can measure the level of CTx-I-one of the most sensitive biochemical markers of bone resorption-in serum and transmit the measured value to an IoT-based cloud server. The selectivity of the sensing system to CTx-I has been achieved by coating the sensor with artificial antibodies, prepared by means of molecular imprinting technology. Explaining all aspects of the systems development in detail, the book will be of great interest to all engineers, researchers and scientists whose work involves the development of electrochemical sensors and PoC devices."
Switzerland: Springer Nature, 2019
e20508033
eBooks  Universitas Indonesia Library
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Chen, Xiaoming
"This book focuses on massive access to the cellular internet of things (IoT). Both theory and technique are addressed, with more weight placed on the latter. This is achieved by providing in-depth studies on a number of central topics such as channel state information acquisition, user clustering, superposition coding, and successive interference cancellation. Four typical application scenarios are examined in detail, namely the stationary IoT device scenario, frequency division duplex-based low-mobility IoT device scenario, time-division duplex-based IoT device scenario, and high-mobility IoT device scenario. The comprehensive and systematic treatment of key techniques in massive access to the cellular IoT is one of the major features of the book, which is particularly suited for readers who are interested in finding practical solutions for the cellular IoT. As such, it will benefit researchers, engineers, and graduate students in the fields of information engineering, telecommunications engineering, computer engineering, etc."
Singapore: Springer Nature, 2019
e20509204
eBooks  Universitas Indonesia Library
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Skolastika Tanubrata
"Terjadinya peningkatan penduduk tidak hanya memberikan dampak positif tetapi juga meningkatkan kebutuhan akan pangan. Hidroponik sebagai salah satu jenis hortikultura memiliki potensi yang besar untuk mengatasi permasalahan tersebut. Perkembangan hidroponik juga dapat didorong melalui otomatisasi yang membuat kontrol terhadap parameter lebih akurat. Selain parameter utama yang umum dikontrol pada hidroponik yaitu nutrisi dan pH, suhu air juga menjadi parameter yang perlu diperhatikan. Dimana suhu air akan berpengaruh pada pertumbuhan tanaman terutama terkait akar tanaman, baik dari segi penyerapan nutrisi maupun oksiger terlarut. Studi ini akan membahas lebih lanjut mengenai sistem pendinginan suhu air berdaya rendah dalam hidroponik menggunakan modul peltier TEC1-12706.

Hasil penelitian ini menunjukan dari konfigurasi pararel, seri dan Tunggal, konfigurasi peltier yang lebih optimal untuk sistem hidroponik adalah konfigurasi tunggal menggunakan 2 peltier dengan total arus, tegangan dan daya yang digunakan berturut-turut yaitu 12.023A, 11.99V dan 144.209 W. Dimana konfigurasi tersebut mampu menurunkan dan menjaga suhu pada 25 – 25.5°C untuk air 10L pada sore hingga pagi hari dengan waktu untuk menurunkan air dari 25.5 °C sekitar 10 menit.


The increase in population not only has positive impacts but also raises the need for food. Hydroponics, as a type of horticulture, has great potential to address this issue. The development of hydroponics can also be promoted through automation, which makes the control of parameters more accurate. Besides the main parameters commonly controlled in hydroponics, such as nutrients and pH, water temperature is also a parameter that needs attention. Water temperature affects plant growth, particularly related to plant roots, in terms of nutrient absorption and dissolved oxygen. This study will further discuss the low energy water temperature cooling system in hydroponics using a peltier module TEC1-12706.

The results of this study indicate that from the parallel, series and single configurations, the more optimal peltier configuration for the hydroponic system is a single configuration using 2 peltiers with a total current, voltage and power used respectively, namely 12.023A, 11.99V and 144.209 W. Where this configuration is able to lower and maintain the temperature at 25 - 25.5 ° C for 10L of water in the afternoon to morning with a time to lower the water from 25.5 ° C of around 10 minutes."

Depok: Fakultas Teknik Universitas Indonesia, 2024
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UI - Skripsi Membership  Universitas Indonesia Library
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Ferraro, V.C.A.
London: Athlone Press, 1962
530.141 FER e
Buku Teks SO  Universitas Indonesia Library
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Stratton, Julius Adams
New York: McGraw-Hill, 1941
621.3 STR e
Buku Teks  Universitas Indonesia Library
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Aqdam Zain Hajj
"Fragmentasi IoT menimbulkan tantangan interoperabilitas karena produsen masing-masing perangkat mungkin memiliki format pesan dan mekanisme komunikasi yang berbeda. Dengan kata lain, mereka harus menggunakan library atau aplikasi dari masing-masing produsen perangkat. Permasalahan tersebut dapat diatasi dengan Web of Things (WoT), yang mengatasi fragmentasi IoT dengan menggunakan dan memperluas teknologi Web standar yang sudah ada. Pemanfaatan teknologi Web pada IoT adalah dengan memprogram perangkat tertanam menjadi Web Server yang dapat mengekspos secara langsung interaksi ke perangkat melalui WoT API dengan standar data WoT. WoT API sebagai REST Server yang disematkan pada perangkat tertanam dapat secara langsung berinteraksi dengan perangkat melalui protokol HTTP. Tujuan dari penelitian ini adalah mengimplementasikan WoT dan melakukan pengujian waktu respons pada sistem WoT berbasis HTTP dengan membuat WoT API pada perangkat ESP8266. Karena WoT dibangun di atas RESTful API yang bersifat stateless, Implementasi sistem WoT dapat diintegrasikan pada berbagai lingkungan pengembangan yang mendukung Klien Web seperti aplikasi Web atau android dan sebagainya. Penelitian ini juga mengimplementasikan Web service pada sistem WoT sebagai layer autentikasi untuk WoT API dengan menyematkan JSON Web Token. Keseluruhan sistem WoT dapat ditempatkan sebuah Gateway yang dapat diimplementasikan sebagai akses remote untuk WoT API.

IoT fragmentation poses interoperability challenges because the manufacturers of each device may have different message formats and communication mechanisms. In other words, they must use libraries or applications from each device manufacturer. These problems can be overcome with the Web of Things (WoT), which overcomes the fragmentation of the IoT by using and extending existing standard Web technologies. The utilization of web technology in IoT is to program embedded devices into web servers that can directly expose interactions to devices via WoT APIs with WoT data standards. WoT API, as a REST server embedded in an embedded device, can directly interact with the device via the HTTP protocol. This research aims to implement WoT and test the response time on an HTTP-based WoT system by creating a WoT API on an ESP8266 device. Because WoT is built on a stateless RESTful API, WoT system implementations can be integrated into various development environments that support web clients such as web or android applications and so on. The entire WoT system can host a gateway to be implemented as remote access for WoT API. This research also implements a web service on the WoT system as an authentication layer for the WoT API by embedding a JSON Web Token."
Depok: Fakultas Teknik Universitas Indonesia, 2022
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UI - Skripsi Membership  Universitas Indonesia Library
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Andrianto Adi Wibowo
"AEC (Asean Economic Community) 2015 menimbulkan beberapa tantangan dalam industri logistik. Oleh karenanya diperlukan peranan dan penerapan layanan IoT (Internet of Things) untuk meningkatkan daya saing, yaitu berupa implementasi layanan smart logistic transport. Tesis ini mengusulkan model implementasi smart logistic transport di Indonesia yang berfokus pada sistem cold supply chain.
Tesis ini bertujuan melakukan analisis ekonomi teknik dalam bentuk analisis komparatif layanan smart logistic transport terkait pemilihan teknologi jaringan 2G/3G/4G dan fitur MDVR yang dibedakan menjadi Skenario 1-2-3. Sedangkan pengembangan model implementasi didapatkan setelah melakukan wawancara dengan application customers,technological vendors,regulator & network provider.
Berdasarkan trial implementasi smart logistic transport bulan September-Oktober 2015 dengan analisis ekonomi teknik, didapatkan layanan not feasible hanya pada skenario 3 untuk unit "CD6", di jaringan 4G. Hal ini terkait masih mahal dan belum banyak tersedianya modul m2m gateway dan MDVR teknologi jaringan 4G. Sehingga diperlukan jumlah minimum truk "CD6" dan "Fuso" pada tiap skenario agar implementasi menjadi feasible. Untuk model implementasi layanan terdiri atas 11 fitur, yaitu 2 fitur basic dan 9 fitur ad.

Asean Economic Community 2015 has been creating more challenges in logistics industries in Indonesia. The implementation of IoT in logistic services is needed for increasing competitiveness leading to the establishment of so-called "smart logistic transport". We propose the implementation model of the Indonesian Smart Logistic Transport, by focusing on cold supply chain system.
We have conducted an engineering economic analysis of the smart logistics transport, in relation with the mobile network platform of 2G, 3G, 4G. Development of the implementation model is completed by conducting in-depth interviews with the application customers, technological vendors, regulator and network provider. Based on implementation trial in September-October 2015 and engineering economic analysis, we have found that Smart Logistic Transport is not feasible only on scenario 3 for "CD6" at 4G network. Such condition is caused by the expensive price of 4G’s M2M gateway module and MDVR.
Therefore, it requires the minimum amount of implemented truck to make implementation feasible. Our proposed model has signified 11 features, i.e. 2 basic feature and 9 advanced features, formulating the Indonesian smart logistics transport system. Due to the dynamic business process, customers may need specific advanced features in the future. By taking such opportunity, Indonesian local content developer can work to develop any relevant application features, which is needed by the logistic companies in the near future.
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Depok: Fakultas Teknik Universitas Indonesia, 2016
T45151
UI - Tesis Membership  Universitas Indonesia Library
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Achmad Fauzi Rachmani
"Pada era Information Communication Technology ICT, perkembangan dari software dan hardware sangat pesat. Berdasarkan data Dirjen Pos dan Telekomunikasi prospek dari Internet of Things untuk Indonesia mencapai 444 triliun dengan 400 juta sensor perangkat terhubung. Berbagai sektor mulai menerapkan IoT sebagai sistem automasinya seperti industry, kesehatan, logistic, dan pertanian. Fokus pada penelitian ini adalah penerapan IoT pada bidang pertanian. Berdasarkan pengujian menggunakan arduino dan LoRa 915 MHz bahwa perfomansi dari sistem dapat menjangkau hingga 700 meter dengan nilai Received Signal Strength RSSI dibawah -120 dBm dan nilai rata-rata Packet Delivery Ratio PDR 40-50. Sedangkan pengujian dari sisi end user menunjukkan bahwa sistem antarmuka web memiliki rata-rata penilaian 4 sampai 4.2 dari segi tampilan, fungsi, dan informasi. Untuk segi kinerja response time memperlihatkan bahwa web dapat diakses dalam waktu 0.2 detik hingga 0.6 detik.

In the era of Information Communication Technology ICT the development of software and hardware is very rapid. Based on data from Director General of Pos and Telecommunication, the prospect of Internet of Things for Indonesia reached 444 trillion with 400 million sensors connected devices. Various sectors are beginning to implement IoT as their automation systems such as industry, health, logistics, and agriculture. The focus of this research is the application of IoT in agriculture. Based on testing using arduino and LoRa 915 MHz, the perfomance of the system can reach up to 700 meters with the value of Received Signal Strength RSSI below 120 dBm with an average of 40 50 Packet Delivery Ratio PDR . While testing from the end user side shows that the web interface system has an average rating of 4 to 4.2 in terms of appearance, function, and information. In terms of performance response time shows that the web can be accessed within 0.2 seconds to 0.6 seconds."
Depok: Fakultas Teknik Universitas Indonesia, 2018
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UI - Skripsi Membership  Universitas Indonesia Library
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Akhdan Hilmy Taufiqurrahman
"ABSTRAK
Skripsi ini menganalisa bagaimana range, power consumption pada Dragino LoRa Shield. Pada tahap pertama, dibuat desain embedded system LoRa yang bersangkutan menggunakan aplikasi Node-red. Pada percobaan, diukur power consumption pada berbagai jarak antara client dan server. Jarak yang diuji adalah jarak dimana konektivitas antara client dan server masih terjaga/terhubung. Aplikasi Node-Red yang digunakan untuk menyajikan hasil pengujian menunjukan bahwa konektivitas tetap terjaga hingga 1700 cm indoor, dan 1.980 km outdoor. Selain itu, melalui pengukuran yang dilakukan diketahui bahwa daya yang dikonsumsi adalah 0.103 watt untuk indoor, dan 0.103 watt untuk outdoor.

ABSTRACT
This final project explains the implement of sensor and humidity sensor namely DHT11 on LoRa Client and LoRa Server, in using application of IoT. The implement of how to connect using range, Power Consumption with Dragino LoRa Shield. In this work, the design of embedded of LoRa system connected can be served by Node red application. The result of the measured range between LoRa Client and LoRa Server. The range which is measured, is the connectivity between client and server is still connected. Node Red application is used to present the result research which is presenting that the indoor connectivity is still exist to 1700 cm, and the outdoor reaches 1.980 km. Besides that, the result of power consumption in indoor and outdoor are 0.103 watt. "
2018
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UI - Skripsi Membership  Universitas Indonesia Library
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