Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 31 for “"keyboards"”.
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Performance and Usability of Flexible Membrane Keyboards
Recently, many full-sized keyboards have been designed to fold in various ways in an attempt to make them more transportable. The flexible membrane keyboard, one type of full sized keyboard, is unique because it is made from silicon rubber, thus it is fully flexible and water resistant. Although a …
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Theoretical and practical considerations in the design of special-purpose keyboards and operator training procedures
This thesis deals with theoretical and practical issues of special-purpose keyboard design and operator training precedures. It is in two parts.The research discussed in Part A was carried out in support of two contracts from the Post Office and had two main objectives: first, to provide …
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MusiKeys: Exploring Auditory-Physical Feedback Replacement for Mid-Air Text-Entry
… in XR remains unsolved. Physical QWERTY keyboards are the current standard for these kind of tasks, but if they are recreated virtually, the feedback information from sense of touch is lost. We designed and ran study with 24 participants to explore the effects of using auditory feedback …
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An experimental comparison of a ternary chord keyboard with the QWERTY keyboard
Chord keyboards use the concept of simultaneous activation of keys to produce single characters. Some chord keyboards have been suggested as potential devices to replace the standard QWERTY keyboard which is now considered the major human-computer interface tool. This study focused on evaluating a …
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Dependence of typing speed and accuracy on device type and familiarity
… of thirty-two typing tests on various laptop keyboards and mobile phones. Measurements were taken of typing speed and accuracy on familiar and unfamiliar keyboards for both laptops and phone keyboards, and specific mistake types were counted and recorded.
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Effects of negatively sloped keyboard wedges on user performance and perceptions
Of the studies that considered negatively sloped keyboards, results showed improved comfort and postural effects while typing on keyboards; however, few studies of negatively sloped keyboard angles and their resulting effects on objective physiological measures, psychological measures, and …
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Applying teeline shorthand using leap motion controller
… in the air to input texts instead of using keyboards. In the recognition mode, the dynamic time warping algorithm is used to compare the similarities between different templates and gesture inputs and summarize the recognition results; in the edit process, users are able to build their own …
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Evaluation of the separation involved in recycling end-of-life (EOL) electronic equipment
… this research was to investigate composition of keyboards and casings of personal computers, and other EOL components, as representative of post-consumer EOL equipment. The plastics were then characterized in terms of their density, qualitative composition and inorganic content.;The frother …
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Improving performance of a GSM-based speech recognizer
… with machines for instance, computers, where keyboards and typing are the means of communication. Most people can speak but not everyone can read or write. Therefore, if we could get the machines to understand human speech, we could be able to communicate with people (and even make …
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Text Entry in Virtual Reality; Implementation of FLIK method and Text Entry Test-bed
… QWERTY keyboard, smartphone touch virtual keyboards, speech to text techniques, and others. The purpose of this text entry test-bed software is to provide a flexible and reusable experiment tool for text entry studies, in such a way to include studies from a variety of sources, more …
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Comparing the effects of traditional, VR, and custom-made input devices on usability, cognitive load, and presence on virtual laparoscopic tasks : investigating the potential of low-cost, consumer-level VR technology for medical simulation and training through laparoscopy simulation
… computer simulators rely on controllers, keyboards, mice, and gamepads that lack adequate laparoscope representation. This thesis investigates how keyboard/mouse, VR controller, game controller, and a custom-made 3D printed controller in the form of a retrofitted laparoscope integrated …
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Characterizing Dynamic Power and Data Rate Policies for WirelessUSB Networks
… Corporation for human interface devices such as keyboards and mice. WirelessUSB devices conserve power by employing power-efficient hardware, dynamic power level adjustment and dynamic data rate adjustment. We characterize the effects on power consumption of dynamically adjusting node power using …
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Evaluación y diseño de métodos efectivos de inserción de texto en entornos de televisión digital interactiva
… dispositions, and other alternative devices like keyboards, pointing devices or touchpads. As writing methods we use virtual keyboards (alphabetic, genetic, Qwerty) and mobile-type methods like Multitap, T9 and 2-key. The test environment was designed simulating a living room similar to that which …
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Gestural musical interfaces using real time machine learning
… interfaces to interact with sound modules like keyboards, drum machines, joysticks, mixing and mastering systems have been flooding the music industry. Research in the past decade gone one step further in interacting through simple musical gestures to create, shape and arrange music in real …
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Ergonomic, adaptable keyboard for fast data entry on mobile computing devices
… of the speed of the standard desktop QWERTY keyboards. Therefore, it is slow and frustrating for people to use these systems for any significant text input, such as writing emails, taking notes in a meeting, or writing down thoughts while on-the-go. The proposed solution is a one-handed, …
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Two-piano performance : its classification, history, and challenges, with a compilation of a detailed catalogue of works
… or whether it incorporates two pianists at two keyboards. Various sources were consulted to show that no uniform definition is available. In this initial chapter background to the study is given, available literature is reviewed and research methodology is explained.
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Encryption of Computer Peripheral Devices
<p>Computer peripherals, such as keyboards, scanners, printers, cameras, and Personal Data Assistants (PDAs) typically communicate with a host PC via an unencrypted protocol, leaving them vulnerable to eavesdropping techniques, such as keyloggers. An encryption system was developed that is simple …
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Kinematics of the wrist during a keying task: the effects of workstation design and work pace
Since the advent of keyboards into the workplace, workers began to experience disorders of the tendons and nerves of the upper extremities, referred to as cumulative trauma disorders, due to the repeated exertions and excessive movements. One of the major research voids in the study of occupational …
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A computing task ergonomic risk assessment tool for assessing risk factors of work related musculoskeletal disorders
… and computer accessories such as seat pan, keyboards, mouse, monitor and telephone. In addition, further testing of reliability and validity of the observational method was less reported. This study was conducted to propose the new office ergonomic risk assessment (OFFERA) method to assess a …
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Compact and low-power computational 3D sensors for gestural input
… the display, interface elements like on-screen keyboards consume precious display real estate, and navigation through content often requires repeated actions like pinch-and-zoom. This thesis is motivated by these inherent limitations of using touch input to interact with mobile devices. Thus, …
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