241 research outputs found
Curvature Dial: Eyes-free parameter entry for GUIs
No full textIn this demonstration, we introduce "curve dial" a technique designed to extend gesture-based interactions like FlowMenus with eyes-free parameter entry. FlowMenus, let users enter numerical parameters with “dialing” strokes surrounding the center of a radial menu. This centering requires users to keep their eyes on the Menu in order to align the pen with its center before initiating a gesture. Curve dial instead tracks the curvature of the path created by the pen: since curvature is location-independent, curvature dialing does not require users to keep track of the menu center and is therefore eyes-free. We demonstrate curvature dial with the example of a simple application that allows users to scroll through a document eyes-free
Personal Fabrication: Patrick Baudisch and Stefanie Mueller Talk About Physical Natives
No full textPersonal fabrication is celebrating technological break-throughs that will enable us to easily generate new physical forms and shapes. It democratizes the capability of building physical things and may usher in the era of physical natives. Stefanie Mueller and Patrick Baudisch critically review the state of the art and speculate on the future use and users of personal fabrication, while highlighting corresponding research challenges for the HCI community
Curve dial
No full textIn this demonstration, we introduce curve dial a technique designed to extend gesture-based interactions like FlowMenus with eyes-free parameter entry. FlowMenus, let users enter numerical parameters with dialing strokes surrounding the center of a radial menu. This centering requires users to keep their eyes on the Menu in order to align the pen with its center before initiating a gesture. Curve dial instead tracks the curvature of the path created by the pen: since curvature is location-independent, curvature dialging does not require users to keep track of the menu center and is therefore eyes-free. We demonstrate curvature dial with the example of a simple application that allows users to scroll through a document eyes-free
Earpod: eyes-free menu selection using touch input and reactive audio feedback
No full textbaudisch @ microsoft.com Figure 1. Using earPod. (a, b) Sliding the thumb on the circular touchpad allows discovery of menu items; (c) the desired item is selected by lifting the thumb; (d) faster finger motions cause partial playback of audio. Size of the touchpad has been exaggerated for illustration purposes. We present the design and evaluation of earPod: an eyesfree menu technique using touch input and reactive auditory feedback. Studies comparing earPod with an iPod-like visual menu technique on reasonably-sized static menus indicate that they are comparable in accuracy. In terms of efficiency (speed), earPod is initially slower, but outperforms the visual technique within 30 minutes of practice. Our results indicate that earPod is potentially a reasonable eyesfree menu technique for general use, and is a particularly exciting technique for use in mobile device interfaces. ACM Classification: H5.2 [Information interfaces and presentation]: User Interfaces. Input devices and strategies
Density dependence triggers runaway selection of reduced senescence
No full textIn the presence of exogenous mortality risks, future reproduction by an individual is worth less than present reproduction to its fitness. Senescent aging thus results inevitably from transferring net fertility into younger ages. Some long-lived organisms appear to defy theory, however, presenting negligible senescence (e.g., hydra) and extended lifespans (e.g., Bristlecone Pine). Here, we investigate the possibility that the onset of vitality loss can be delayed indefinitely, even accepting the abundant evidence that reproduction is intrinsically costly to survival. For an environment with constant hazard, we establish that natural selection itself contributes to increasing density-dependent recruitment losses. We then develop a generalized model of accelerating vitality loss for analyzing fitness optima as a tradeoff between compression and spread in the age profile of net fertility. Across a realistic spectrum of senescent age profiles, density regulation of recruitment can trigger runaway selection for ever-reducing senescence. This novel prediction applies without requirement for special life-history characteristics such as indeterminate somatic growth or increasing fecundity with age. The evolution of nonsenescence from senescence is robust to the presence of exogenous adult mortality, which tends instead to increase the age-independent component of vitality loss. We simulate examples of runaway selection leading to negligible senescence and even intrinsic immortality
Shift: a technique for operating pen-based interfaces using touch
No full textRetrieving the stylus of a pen-based device takes time and requires a second hand. Especially for short intermittent interactions many users therefore choose to use their bare fingers. Although convenient, this increases targeting times and error rates. We argue that the main reasons are the occlusion of the target by the user’s finger and ambiguity about which part of the finger defines the selection point. We propose a pointing technique we call Shift that is designed to address these issues. When the user touches the screen, Shift creates a callout showing a copy of the occluded screen area and places it in a non-occluded location. The callout also shows a pointer representing the selection point of the finger. Using this visual feedback, users guide the pointer into the target by moving their finger on the screen surface and commit the target acquisition by lifting the finger. Unlike existing techniques, Shift is only invoked when necessary—over large targets no callout is created and users enjoy the full performance of an unaltered touch screen. We report the results of a user study showing that with Shift participants can select small targets with much lower error rates than an unaided touch screen and that Shift is faster than Offset Cursor for larger targets. Author Keywords mobile devices, touch-screens, interaction techniques, occlusion
Interactive city lighting
No full textLED based lighting systems have enabled radically new possibilities in the field of artificial lighting. This is due to in part to the LED being digitally controllable which means this efficient light source can also be integrated with sensors and smart environments. This has opened up a new world of lighting and lighting interaction opportunities that has been applied in new concepts in many of the indoor lighting domains. The outdoor lighting domain however has focused mostly on the LED’s efficiency and low cost of ownership to save energy and money for local governments. The use of the LED as a potential means for providing interactive city lighting for social good or entertainment is as yet a fairly unexplored area. This is therefore the focus of this workshop to bring together a community of researchers, designers and technologists to explore the potential of interactive city lighting and how it could support or enhance the lives of those living in a city.</p
Developing Hospice Care Over a Distance in Highland Scotland: a Knowledge Exchange Process
No full textThis paper describes a piece of collaborative research that aimed to develop an implementation plan for a virtual hospice. The aim of the virtual hospice in this case is to extend the reach of hospice facilities provided by the Highland Hospice in Inverness, Scotland. We chose a knowledge exchange process that included Hospice staff at every step. We began with a workshop that scoped out all of the potential virtual hospice services, which were condensed into a core set of five services. We then conducted interviews with selected Hospice staff. The final step involved presenting our recommendations to the Hospice, including a storyboard of how the virtual hospice might operate in practice. We took the Hospice’s feedback and incorporated it into a final report. Overall, we feel that the knowledge exchange process generated a more accurate and realistic implementation plan
The Profile Editor: Designing a direct manipulative tool for assembling profiles
No full textInformation filtering systems retrieve documents from document streams according to their users' long-term information interests represented by so-called profiles. The Profile Editor proposed in this article allows the interactive, direct manipulative construction of profiles. It takes a set of ranked queries and compiles them into a single profile by cropping and re-ranking the queries' results. The approach of manual profile generation is expected to lead to two advantages: a) Profile generation is expected to be much faster than feedback-based automatic profile generation and b) users' confidence in their profiles should be higher because they are in control of their profiles. The Profile Editor is currently being implemented in the context of an Internet TV program guide, in which it will be evaluated during the next months. Keywords information filtering, profile, histograms, sliders, direct manipulation, user interfaces, Java INTRODUCTION The goal of information filtering s..
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