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Optoelectronics – solid state optical devices
Published in David Jiles, Introduction to the Electronic Properties of Materials, 2017
The main advantages of AMLCDs are that they are light and compact and, therefore, easily portable. They provide high resolution at a high-speed response and have low energy consumption. The main application is in portable computers such as ‘laptop’ and ‘notebook’ style computers.
Experimental Investigation on the Possible Effect of Previous Damage, Workmanship and Test Setup on the Out-of-plane Behaviour of Masonry Infill Walls
Published in Journal of Earthquake Engineering, 2022
André Furtado, Hugo Rodrigues, Antonio Arede, Humberto Varum
The ambient vibration tests herein presented were carried out using twelve accelerometers that were distributed as follows: 9 accelerometers – OOP vibration measurement of the panel, and 3 OOP vibration measurement of the RC frame) to measure the OOP vibration frequencies. The layout of the test setup adopted is shown in Fig. 9. The following components were used, namely: i) a set of accelerometers PCB Piezotronics model 393B31 (0.5 g, 10.0 V/g, a frequency range of 0.01–200 Hz); ii) coaxial cables Piezotronics model 024R10; iii) devices NI USB-9162 from National Instruments (NI 2016) that allow acquiring data results of all accelerometers simultaneously and finally, iv) a portable computer to control the data acquisition (DAQ) and store results. Data acquisition, composed of three sets of measurements, during periods of 15 minutes each, with a sampling frequency equal to 2000 Hz was adopted to perform these tests.
Identifying Key Components of Paper-Based and Technology-Based Home Assessment Tools Using a Narrative Literature Review
Published in Journal of Aging and Environment, 2021
Sahar Mihandoust, Rutali Joshi, Anjali Joseph, Kapil Chalil Madathil, Cheryl J. Dye, Herminia Machry, Julia Wilson
The technology-based home assessment tools tended to require a range of instruments including cameras for taking pictures, paper and electronic checklists, measuring tapes, smartphone, tablet, or a portable computer with live internet connection. In one study utilizing an internet connection on a telerehabilitation system, the older adult/occupational therapist used a portable ultrasonic measurement device to record distances (Hoffmann & Russell, 2008). In home assessments utilizing 3D applications, older adults and occupational therapists used applications to take photos, write comments, and use checklists. In two other studies, occupational therapists used a virtual reality interior design application on a computer (Atwal et al., 2014), 3D home visualization software, and gaming technology (Money et al., 2011) as assistive instruments for home visits. In another study, a remote research assistant controlled a remotely maneuverable robot to take pictures and videos of the home environment for later home assessments (Sadasivam et al., 2014).
In-ear-EEG – a portable platform for home monitoring
Published in Journal of Medical Engineering & Technology, 2020
In-ear-EEG hardware (Figure 3) include a chip set (in-ear-EEG Electronic) which performs hardware filtering, amplification and conversion to a digital form of analogue biosignals in the range of microvolts. The in-ear-EEG Electronic is connected with electrodes and with a portable computer (i.e., smartphone). Technical specification of the in-ear-EEG Electronic is presented in Table 1. Communication with the computer as well as a power supply for the electronics are realised over USB. The other side of the in-ear-EEG Electronic is connected with the in-ear-Electrodes using standard for conventionally EEG 1.5 mm connectors. The amplification and signal transformation in the Electronic (Figure 4) is based on an ADS1299 chip from Texas Instruments [17]. The Electronics consist of three main subcomponents (Figure 5): Low Pass Filter with user protection, amplifier with ADC converter and microcontroller board (MB). All components from the electrodes to the amplifier are analogue, whereas the amplifier output is digital. The microcontroller board provides power source of +5 and +3.3 V for all subcomponents of the Electronic block. The amplifier and ADC components communicate with the MB over the Serial Peripheral Interface (SPI) bus. To connect with a portable computer, the microcontroller board is equipped with a USB port for data transfer and to receive a 5 V power line from the computer. In our prototype an Arduino Nano V3.0 is used as microcontroller board.