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"Touch screens"
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How does a touch screen work?
\"Readers will find out how layers of glass, metal, and LEDs work together to make a touch screen work. Full-color images augment explanations of different kinds of touch screens.\"-- Publisher's website.
Book
Adaptive Robotic Tutors that Support Self-Regulated Learning: A Longer-Term Investigation with Primary School Children
Robots are increasingly being used to provide motivating, engaging and personalised support to learners. These robotic tutors have been able to increase student learning gain by providing personalised hints or problem selection. However, they have never been used to assist children in developing self regulated learning (SRL) skills. SRL skills allow a learner to more effectively self-assess and guide their own learning; learners that engage these skills have been shown to perform better academically. This paper explores how personalised tutoring by a robot achieved using an open learner model (OLM) promotes SRL processes and how this can impact learning and SRL skills compared to personalised domain support alone. An OLM allows the learner to view the model that the system holds about them. We present a longer-term study where participants take part in a geography-based task on a touch screen with adaptive feedback provided by the robot. In addition to domain support the robotic tutor uses an OLM to prompt the learner to monitor their developing skills, set goals, and use appropriate tools. Results show that, when a robotic tutor personalises and adaptively scaffolds SRL behaviour based upon an OLM, greater indication of SRL behaviour can be observed over the control condition where the robotic tutor only provides domain support and not SRL scaffolding.
Journal Article
Technology of Auto Teller Machine Interface: Accessibility for Bank Customer with Visual Impairments
Auto Teller Machine (ATM) is one of the banking facilities that attract customers with visually impaired to take advantage of banking services. However, there are still some obstacles faced to utilize technology related to ATM, this is because the technology owned by a number of ATMs is not in accordance with the conditions of customers with visual impairments. Therefore, this study aims to determine the ability of customers with visual impairments in operating ATM machines and determine the difficulties experienced when operating them. This research uses a quantitative descriptive research method by using the main research instrument in the form of a questionnaire and supporting data obtained through focus group discussions conducted with a number of respondents selected purposively. The results show that there are several difficulties faced by customers with visual impairments when using ATM facilities provided by banks. These difficulties include difficulty accessing ATM locations, queuing to use ATMs, inserting cards and taking cash out of ATM machines, taking proof of transaction slips, and difficulties when experiencing errors when using ATM machines that are not equipped with security personnel, so they have difficulty reporting the obstacles they face. While the most common difficulties experienced by customers with visually impairments when dealing with ATM machines are accessing information contained on the ATM screen, entering the pin number on the ATM machine that is not equipped with a button that can help customers with visually impaired, following the instructions for use listed on the ATM screen, as well as typing on the ATM screen type touch screen.
Journal Article
Polyol Silver Nanowire Synthesis and the Outlook for a Green Process
Silver nanowires (AgNWs) have a broad range of applications including nanoelectronics, energy conversion, health care, solar cells, touch screens, sensors and biosensors, wearable electronics, and drug delivery systems. As their characteristics depend strongly on their size and morphology, it is essential to find the optimal and most cost-effective synthesis method with precise control over the size and morphology of the wires. Various methods for AgNW synthesis have been reported along with process optimization and novel techniques to increase the yield and aspect ratios of synthesized AgNWs. The most promising processes for synthesis of AgNWs are wet chemical techniques, in which the polyol process is low cost and simple and provides high yield compared to other chemical methods. Reaction mechanism is one of the most important factors in strategies to control the process. Our purpose here is to provide an overview on the main findings regarding synthesis, preparation, and characterization of AgNWs. Recent efforts in the polyol synthesis of AgNWs are summarized with respect to product morphology and size, reaction conditions, and characterization techniques. The effect of essential factors such as reagent concentration and preparation, temperature, and reaction atmosphere that control the size, morphology, and yield of synthesized AgNWs is reviewed. Moreover, a review on the novel modified polyol process and reactor design such as continuous millifluidic and flow reactors to increase the yield of synthesized AgNWs on large scales is provided. The most recent proposed growth mechanisms and kinetics behind the polyol process are addressed. Finally, comparatively few available studies in green and sustainable development of 1D silver nanostructures through the application of natural products with inherent growth termination, stabilization, and capping characteristics are reviewed to provide an avenue to natural synthesis pathways to AgNWs. Future directions in both chemical and green synthesis approaches of AgNWs are addressed.
Journal Article
The role of the dorsal hippocampus in two versions of the touchscreen automated paired associates learning (PAL) task for mice
Rationale
The CANTAB object-location paired-associate learning (PAL) test can detect cognitive deficits in schizophrenia and Alzheimer’s disease. A rodent version of touch screen PAL (dPAL) has been developed, but the underlying neural mechanisms are not fully understood. Although there is evidence that inactivation of the hippocampus following training leads to impairments in rats, this has not been tested in mice. Furthermore, it is not known whether
acquisition
, as opposed to performance, of the rodent version depends on the hippocampus. This is critical as many mouse models may have hippocampal dysfunction prior to the onset of task training.
Objectives
The objectives of this study are to examine the effects of dorsal hippocampal (dHp) dysfunction on both performance and acquisition of mouse dPAL and to determine if hippocampal task sensitivity could be increased using a newly developed
context-disambiguated PAL
(cdPAL) paradigm.
Methods
In experiment 1, C57Bl/6 mice received post-acquisition dHp infusions of the GABA agonist muscimol. In experiment 2, C57Bl/6 mice received excitotoxic dHp lesions prior to dPAL/cdPAL acquisition.
Results
Post-acquisition muscimol dose-dependently impaired dPAL and cdPAL performance. Pre-acquisition dHp lesions had only mild effects on both PAL tasks. Behavioural challenges including addition of objects and degradation of the visual stimuli with noise did not reveal any further impairments.
Conclusions
dPAL and cdPAL performance is hippocampus-dependent in the mouse, but both tasks can be learned in the absence of a functional dHp.
Journal Article
Mid-Day Meal Analytics Using Machine Learning
The concept is to prevent the wastage of food from the mid-day meal scheme and to identify the fraudulence that is being happened in the mid-day meal scheme. In this process, QR-code reader is used to the number of students is enroll their count for food within some pre-determined time through their ID card. A touch screen display is placed at the food issuing place which shows the menu for a particular day. Food can be monitored through a Web camera and it also placed at the food issuing place take snapshot of every individual student which provides the count of students reported with the required students count the amount of food needs to be prepared for that day is known. This snapshot photo is compared with the photo taken by the Web camera at the place where the food is prepared. The Raspberry-pi is to process the machine learning concept to identify the meal. To develop the mobile application to send the notification to a higher authority when fraudulence action is detected via camera.
Journal Article
Design of Ion Implantation and Deposition Signal Generator Based on FPGA and Touch Screen
In order to improve the operation precision of ion implantation and deposition signal generator, to fix its arithmetic error and reach 1μs as the pulse adjustment unit, use FPGA and touch screen technology to improve the performance of signal generator. On the one hand, the FPGA board can directly affect the FPGA chip through Verilog to reduce the program operation time, on the other hand, replacing with crystal oscillator with higher frequency can make the program run faster and minimize the arithmetic error. The combination of FPGA and crystal oscillator can easily realize the clock input of MHz level and output pulse with 1μs as the adjustment unit, which has already been applied to signal generator as signal output source.
Journal Article
Comparative analysis of prototypes for two-touch finger interfaces of smartwatch
Two factors are important when the Smartwatch interfaces are developing - the small size of the display and the limited area for input control. The proposed by the authors prototype take them into account and aim to solve the \"fat finger\" problem and the difficult observation that affects the usability of the touch screen. It propose two fingers touch interface for smartwatch. The paper presents a comparison study of it for with two other prototypes. The results of complex evaluation of prototypes are given.
Journal Article