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Displaying 1-31 out of 31 total
Physical, Social, and Experiential Knowledge in Pervasive Computing Environments
Found in: IEEE Pervasive Computing
By Gillian R. Hayes, Erika Shehan Poole, Giovanni Iachello, Shwetak N. Patel, Andrea Grimes, Gregory D. Abowd, Khai N. Truong
Issue Date:October 2007
pp. 56-63
BufferWare is a selective archiving application for recording everyday experiences in an informal space. An evaluation of the system's deployment, combined with analysis of existing research on recording technologies and security and privacy, demonstrates ...
 
Prototypes and Paratypes: Designing Mobile and Ubiquitous Computing Applications
Found in: IEEE Pervasive Computing
By Gregory D. Abowd, Gillian R. Hayes, Giovanni Iachello, Julie A. Kientz, Shwetak N. Patel, Molly M. Stevens, Khai N. Truong
Issue Date:October 2005
pp. 67-73
User-centered design has long made use of physical, contextual, and functional prototyping techniques. Combining these techniques to generate compound prototypes and situated experience prototypes, or
 
GroupEnergyTable: An Interactive Tabletop for Energy Conservation
Found in: IEEE Pervasive Computing
By Katherine M. Everitt,Peter F. Oven,Shwetak N. Patel,James A. Landay
Issue Date:July 2012
pp. 46-53
The GroupEnergyTable is an interactive tabletop that lets users explore shared electricity and transportation data, view energy tips, and set goals. A two-month study shows how the GroupEnergyTable can help decrease electricity use and change travel habits...
 
Understanding Mobile Phone Situated Sustainability: The Influence of Local Constraints and Practices on Transferability
Found in: IEEE Pervasive Computing
By Elaine M. Huang, Koji Yatani, Khai N. Truong, Julie A. Kientz, Shwetak N. Patel
Issue Date:January 2009
pp. 46-53
Mobile phones are the most prevalent example of pervasive computing technologies in use today, with phone subscriptions reaching 3.3 billion in 2007. According to a 2005 estimate, consumers discard roughly 125 million mobile phones into landfills every yea...
 
Disaggregated End-Use Energy Sensing for the Smart Grid
Found in: IEEE Pervasive Computing
By Jon Froehlich, Eric Larson, Sidhant Gupta, Gabe Cohn, Matthew S. Reynolds, Shwetak N. Patel
Issue Date:January 2011
pp. 28-39
Most energy meters installed by utilities are intended primarily to support billing functions. Meters report only the aggregate energy consumption of a home or business over intervals as long as a month. In contrast, disaggregated energy usage data identif...
 
Design and Performance of an Optimal Inertial Power Harvester for Human-Powered Devices
Found in: IEEE Transactions on Mobile Computing
By Jaeseok Yun, Shwetak N. Patel, Matthew S. Reynolds, Gregory D. Abowd
Issue Date:May 2011
pp. 669-683
We present an empirical study of the long-term practicality of using human motion to generate operating power for body-mounted consumer electronics and health sensors. We have collected a large continuous acceleration data set from eight experimental subje...
 
Good vibrations: an evaluation of vibrotactile impedance matching for low power wearable applications
Found in: Proceedings of the 26th annual ACM symposium on User interface software and technology (UIST '13)
By Blake Hannaford, Eric Larson, Iris Jiang, Jack I.C. Lindsay, Richard Adams, Shwetak N. Patel
Issue Date:October 2013
pp. 515-520
Vibrotactile devices suffer from poor energy efficiency, arising from a mismatch between the device and the impedance of the human skin. This results in over-sized actuators and excessive power consumption, and prevents development of more sophisticated, m...
     
AirWave: non-contact haptic feedback using air vortex rings
Found in: Proceedings of the 2013 ACM international joint conference on Pervasive and ubiquitous computing (UbiComp '13)
By Dan Morris, Desney Tan, Shwetak N. Patel, Sidhant Gupta
Issue Date:September 2013
pp. 419-428
Input modalities such as speech and gesture allow users to interact with computers without holding or touching a physical device, thus enabling at-a-distance interaction. It remains an open problem, however, to incorporate haptic feedback into such interac...
     
ContextType: using hand posture information to improve mobile touch screen text entry
Found in: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13)
By Alex Jansen, Shwetak N. Patel
Issue Date:April 2013
pp. 2795-2798
The challenge of mobile text entry is exacerbated as mobile devices are used in a number of situations and with a number of hand postures. We introduce ContextType, an adaptive text entry system that leverages information about a user's hand posture (using...
     
uTouch: sensing touch gestures on unmodified LCDs
Found in: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13)
By Gabe A. Cohn, Ke-Yu Chen, Shwetak N. Patel, Sidhant Gupta
Issue Date:April 2013
pp. 2581-2584
Current solutions for enabling touch interaction on existing non-touch LCD screens require adding additional sensors to the interaction surface. We present uTouch, a system that detects and classifies touches and hovers without any modification to the disp...
     
SpiroSmart: using a microphone to measure lung function on a mobile phone
Found in: Proceedings of the 2012 ACM Conference on Ubiquitous Computing (UbiComp '12)
By Eric C. Larson, Gaetano Boriello, Margaret Rosenfeld, Mayank Goel, Shwetak N. Patel, Sonya Heltshe
Issue Date:September 2012
pp. 280-289
Home spirometry is gaining acceptance in the medical community because of its ability to detect pulmonary exacerbations and improve outcomes of chronic lung ailments. However, cost and usability are significant barriers to its widespread adoption. To this ...
     
An ultra-low-power human body motion sensor using static electric field sensing
Found in: Proceedings of the 2012 ACM Conference on Ubiquitous Computing (UbiComp '12)
By Dan Morris, Desney S. Tan, Gabe Cohn, Joshua R. Smith, Matthew S. Reynolds, Shwetak N. Patel, Sidhant Gupta, Tien-Jui Lee
Issue Date:September 2012
pp. 99-102
Wearable sensor systems have been used in the ubiquitous computing community and elsewhere for applications such as activity and gesture recognition, health and wellness monitoring, and elder care. Although the power consumption of accelerometers has alrea...
     
Investigating receptiveness to sensing and inference in the home using sensor proxies
Found in: Proceedings of the 2012 ACM Conference on Ubiquitous Computing (UbiComp '12)
By Beverly Harrison, Eun Kyoung Choe, Jaeyeon Jung, Julie A. Kientz, Shwetak N. Patel, Sunny Consolvo
Issue Date:September 2012
pp. 61-70
In-home sensing and inference systems impose privacy risks and social tensions, which can be substantial barriers for the wide adoption of these systems. To understand what might affect people's perceptions and acceptance of in-home sensing and inference s...
     
Accurate and privacy preserving cough sensing using a low-cost microphone
Found in: Proceedings of the 13th international conference on Ubiquitous computing (UbiComp '11)
By Eric C. Larson, Margaret Rosenfeld, Sean Liu, Shwetak N. Patel, TienJui Lee
Issue Date:September 2011
pp. 375-384
Audio-based cough detection has become more pervasive in recent years because of its utility in evaluating treatments and the potential to impact the quality of life for individuals with chronic cough. We critically examine the current state of the art in ...
     
LightWave: using compact fluorescent lights as sensors
Found in: Proceedings of the 13th international conference on Ubiquitous computing (UbiComp '11)
By Ke-Yu Chen, Matthew S. Reynolds, Shwetak N. Patel, Sidhant Gupta
Issue Date:September 2011
pp. 65-74
In this paper, we describe LightWave, a sensing approach that turns ordinary compact fluorescent light (CFL) bulbs into sensors of human proximity. Unmodified CFL bulbs are shown to be sensitive proximity transducers when they are illuminated. This approac...
     
Interactive generator: a self-powered haptic feedback device
Found in: Proceedings of the 2011 annual conference on Human factors in computing systems (CHI '11)
By Akash Badshah, Gabe Cohn, Nicolas Villar, Shwetak N. Patel, Sidhant Gupta, Steve Hodges
Issue Date:May 2011
pp. 2051-2054
We present Interactive Generator (InGen), a self-powered wireless rotary input device capable of generating haptic or force feedback without the need for any external power source. Our approach uses a modified servomotor to perform three functions: (1) gen...
     
The haptic laser: multi-sensation tactile feedback for at-a-distance physical space perception and interaction
Found in: Proceedings of the 2011 annual conference on Human factors in computing systems (CHI '11)
By Daniel Avrahami, Erik Turnquist, Francis Iannacci, Shwetak N. Patel
Issue Date:May 2011
pp. 2047-2050
We present the Haptic Laser, a system for providing a range of tactile sensations to represent a physical environment at-a-distance. The Haptic Laser is a handheld device that simulates interaction with physical surfaces as a user targets objects of intere...
     
Your noise is my command: sensing gestures using the body as an antenna
Found in: Proceedings of the 2011 annual conference on Human factors in computing systems (CHI '11)
By Daniel Morris, Desney S. Tan, Gabe Cohn, Shwetak N. Patel
Issue Date:May 2011
pp. 791-800
Touch sensing and computer vision have made human-computer interaction possible in environments where keyboards, mice, or other handheld implements are not available or desirable. However, the high cost of instrumenting environments limits the ubiquity of ...
     
SqueezeBlock: using virtual springs in mobile devices for eyes-free interaction
Found in: Proceedings of the 23nd annual ACM symposium on User interface software and technology (UIST '10)
By Jeffrey R. Hightower, Shwetak N. Patel, Sidhant Gupta, Tim Campbell
Issue Date:October 2010
pp. 101-104
Haptic feedback provides an additional interaction channel when auditory and visual feedback may not be appropriate. We present a novel haptic feedback system that changes its elasticity to convey information for eyes-free interaction. SqueezeBlock is an e...
     
WATTR: a method for self-powered wireless sensing of water activity in the home
Found in: Proceedings of the 12th ACM international conference on Ubiquitous computing (Ubicomp '10)
By Eric Larson, Gabe Cohn, Jon Froehlich, Ramses Alcaide, Shwetak N. Patel, Tim Campbell
Issue Date:September 2010
pp. 169-172
We present WATTR, a novel self-powered water activity sensor that utilizes residential water pressure impulses as both a powering and sensing source. Consisting of a power harvesting circuit, piezoelectric sensor, ultra-low-power 16-bit microcontroller, 16...
     
SNUPI: sensor nodes utilizing powerline infrastructure
Found in: Proceedings of the 12th ACM international conference on Ubiquitous computing (Ubicomp '10)
By Brian Otis, Erich Stuntebeck, Gabe Cohn, Gregory D. Abowd, Jagdish Pandey, Shwetak N. Patel
Issue Date:September 2010
pp. 159-168
A persistent concern of wireless sensors is the power consumption required for communication, which presents a significant adoption hurdle for practical ubiquitous computing applications. This work explores the use of the home powerline as a large distribu...
     
ElectriSense: single-point sensing using EMI for electrical event detection and classification in the home
Found in: Proceedings of the 12th ACM international conference on Ubiquitous computing (Ubicomp '10)
By Matthew S. Reynolds, Shwetak N. Patel, Sidhant Gupta
Issue Date:September 2010
pp. 139-148
This paper presents ElectriSense, a new solution for automatically detecting and classifying the use of electronic devices in a home from a single point of sensing. ElectriSense relies on the fact that most modern consumer electronics and fluorescent light...
     
The design and evaluation of an end-user-deployable, whole house, contactless power consumption sensor
Found in: Proceedings of the 28th international conference on Human factors in computing systems (CHI '10)
By Matthew S. Reynolds, Shwetak N. Patel, Sidhant Gupta
Issue Date:April 2010
pp. 2471-2480
We present the design, development, and evaluation of an end-user installable, whole house power consumption sensing system capable of gathering accurate real-time power use that does not require installing a current transformer around the electrical feeds...
     
HydroSense: infrastructure-mediated single-point sensing of whole-home water activity
Found in: Proceedings of the 11th international conference on Ubiquitous computing (Ubicomp '09)
By Conor Haggerty, Eric Larson, James Fogarty, Jon E. Froehlich, Shwetak N. Patel, Tim Campbell
Issue Date:September 2009
pp. 235-244
Recent work has examined infrastructure-mediated sensing as a practical, low-cost, and unobtrusive approach to sensing human activity in the physical world. This approach is based on the idea that human activities (e.g., running a dishwasher, turning on a ...
     
Sacred imagery in techno-spiritual design
Found in: Proceedings of the 27th international conference on Human factors in computing systems (CHI '09)
By Benjamin K. Davison, Kelly E. Caine, Michael Arteaga, Rebecca E. Grinter, Shwetak N. Patel, Susan P. Wyche
Issue Date:April 2009
pp. 1-4
Despite increased knowledge about how Information and Communications Technologies (ICTs) are used to support religious and spiritual practices, designers know little about how to design technologies for faith-related purposes. Our research suggests incorpo...
     
Are you sleeping?: sharing portrayed sleeping status within a social network
Found in: Proceedings of the ACM 2008 conference on Computer supported cooperative work (CSCW '08)
By Gregory D. Abowd, Julie A. Kientz, Shwetak N. Patel, Sunyoung Kim
Issue Date:November 2008
pp. 21-27
Within a group of peers, it is often useful or interesting to know whether someone in the group has gone to bed or whether they have awakened in the morning. This information, naturally integrated as a peripheral augmentation of an alarm clock, allows peop...
     
Wideband powerline positioning for indoor localization
Found in: Proceedings of the 10th international conference on Ubiquitous computing (UbiComp '08)
By Erich P. Stuntebeck, Gregory D. Abowd, Matthew S. Reynolds, Shwetak N. Patel, Thomas Robertson
Issue Date:September 2008
pp. N/A
Fingerprinting techniques for indoor localization have been widely explored. A particular approach by Patel et al. suggested leveraging of the residential powerline as the signaling mechanism for a domestic location capability. In this paper, we critically...
     
The Georgia Tech aware home
Found in: CHI '08 extended abstracts on Human factors in computing systems (CHI '08)
By Brian Jones, Ed Price, Elizabeth D. Mynatt, Gregory D. Abowd, Julie A. Kientz, Shwetak N. Patel
Issue Date:April 2008
pp. 49-54
The Aware Home Research Initiative (AHRI) at Georgia Tech is devoted to the multidisciplinary exploration of emerging technologies and services based in the home. Starting in 1998, our collection of faculty and students has created a unique research facili...
     
Grow and know: understanding record-keeping needs for tracking the development of young children
Found in: Proceedings of the SIGCHI conference on Human factors in computing systems (CHI '07)
By Gillian R. Hayes, Gregory D. Abowd, Jahmeilah Richardson, Julie A. Kientz, Marshini Chetty, Rosa I. Arriaga, Shwetak N. Patel
Issue Date:April 2007
pp. 1351-1360
From birth through age five, children undergo rapid development and learn skills that will influence them their entire lives. Regular visits to the pediatrician and detailed record-keeping can ensure that children are progressing and can identify early war...
     
Where's my stuff?: design and evaluation of a mobile system for locating lost items for the visually impaired
Found in: Proceedings of the 8th international ACM SIGACCESS conference on Computers and accessibility (Assets '06)
By Arwa Z. Tyebkhan, Brian Gane, Gregory D. Abowd, Jennifer Wiley, Julie A. Kientz, Shwetak N. Patel
Issue Date:October 2006
pp. 103-110
Finding lost items is a common problem for the visually impaired and is something that computing technology can help alleviate. In this paper, we present the design and evaluation of a mobile solution, called FETCH, for allowing the visually impaired to tr...
     
A gesture-based authentication scheme for untrusted public terminals
Found in: Proceedings of the 17th annual ACM symposium on User interface software and technology (UIST '04)
By Gregory D. Abowd, Jeffrey S. Pierce, Shwetak N. Patel
Issue Date:October 2004
pp. 157-160
Powerful mobile devices with minimal I/O capabilities increase the likelihood that we will want to annex these devices to I/O resources we encounter in the local environment. This opportunistic annexing will require authentication. We present a sensor-base...
     
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