Activity-Based Prototyping of Ubicomp Applications for Long-Lived, Everyday Human Activities Yang Li and James A Landay

Activity Sensing in the Wild: A field trial of UbiFit Garden Sunny Consolvo, David McDonald, Tammy Toscos, Mike Chen, Jon Froehlich, Beverly Harrison, Predrag Klasnja, Anthony LaMarca, Louis LeGrand, Ryan Libby, Ian Smith, and James A Landay

An Error Model for Pointing Based on Fitts' Law Jacob O. Wobbrock, Ed Cutrell, Susumu Harada, and Scott MacKenzie

CoSearch: A System for Co-located Collaborative Web Search Saleema Amershi, and Merrie Morris

CueFlik: Interactive Concept Learning in Image Search James Fogarty, Desney Tan, Ashish Kapoor, and Simon Winder

Demonstrating the Feasibility of Using Forearm Electromyography for Muscle-Computer Interfaces Scott Saponas, Desney Tan, Dan Morris, and Ravin Balakrishnan

e-IMCI: Improving Pediatric Health Care in Low-Income Countries Brian DeRenzi, Neal Lesh, Tapan Parikh, Clayton Sims, Marc Mitchell, Werner Maokola, Mwajuma Chemba, Yuna Hamisi, David Schellenberg, and Gaetano Borriello

Employing Patterns and Layers for Early-Stage Design and Prototyping of Cross-Device User Interfaces James Lin and James A Landay

Evaluating Visual Cues for Window Switching on Large Screens Raphael Hoffman, Patrick Baudisch, and Daniel Weld

Feasibility and Pragmatics of Classifying Working Memory Load with an Electroencephalograph David Grimes, Desney Tan, Scott Hudson, Pradeep Shenoy, and Rajesh Rao

Human-Aided Computing: Utilizing Implicit Human Processing to Classify Images Pradeep Shenoy, and Desney Tan,

Improving the Performance of Motor-Impaired Users with Automatically-Generated, Ability-Based Interfaces Krzysztof Z. Gajos, Jacob O. Wobbrock, and Dan Weld

Investigating Statistical Machine Learning as a Tool for Software Development Kayur Patel, James Fogarty, James A Landay, and Beverly Harrison

K-Sketch: A "Kinetic" Sketch Pad for Novice Animators Richard C. Davis, Brien Colwell, and James A. Landay [Video]

Large Scale Analysis of Web Revisitation Patterns Eytan Adar, Jaime Teevan, and Susan Dumais

MySong: Automatic Accompaniment Generation for Vocal Melodies Ian Simon, Dan Morris, and Sumit Basu

Access Control by Testing for Shared Knowledge Michael Toomim, Xianhang Zhang, James Fogarty, and James A. Landay

Predictability and Accuracy in Adaptive User Interfaces Krzysztof Z. Gajos, Katherine Everitt, Desney Tan, Mary Czerwinski, and Daniel Weld

The Personal Project Planner: Planning to Organize Personal Information William Jones, Predrag Klasnja, Andrea Civan, and Michael Adcock

Complete list of CHI 2008 publications from DUB

Recovering from Errors during Programming by Demonstration Jiun-Hung Chen and Daniel Weld

Transcendence: Enabling a Personal View of the Deep Web Jeffrey P. Bigham, Anna C. Cavender, Ryan S. Kaminsky, Craig M. Prince, and Tyler S. Robison

TrueKeys: Identifying and correcting typing errors for people with motor impairments Shaun K. Kane, Jacob O. Wobbrock, Mark Harniss, and Kurt L. Johnson

Community, Consensus, Coercion, Control: CS*W or How Policy Mediates Mass Participation Travis Kriplean, Ivan Beschastnikh, David W. McDonald and Scott A. Golder

Value tensions in design: The value sensitive design, development, and appropriation of a corporation's groupware system. Jessica Miller, Batya Friedman, Gavin Jancke and Brian Gill

Physical Access Control for Captured RFID Data Travis Kriplean, Evan Welbourne, Nodira Khoussainova Vibhor Rastogi, Magdalena Balazinska, Gaetano Borriello, Tadayoshi Kohno and Dan Suciu

A comparison of area pointing and goal crossing for people with and without motor impairments Jacob O. Wobbrock and Krzysztof Z. Gajos

Automated tactile graphics translation: in the field Chandrika Jayant, Matt Renzelmann, Dana Wen, Satria Krisnandi, Richard Ladner, and Dan Comden

Barrier Pointing: Using Physical Edges to Assist Target Acquisition on Mobile Device Touch Screens Jon Froehlich, Jacob O. Wobbrock and Shaun K. Kane

Variable frame rate for low power mobile sign language communication Neva Cherniavsky, Anna C. Cavender, Richard E. Ladner, and Eve A. Riskin

VoiceDraw: A Hands-Free Voice-Driven Drawing Application for People with Motor Impairments Susumu Harada, Jacob O. Wobbrock and James A. Landay

WebinSitu: A Comparative Analysis of Blind and Sighted Browsing Behavior Jeffrey P. Bigham, Anna C. Cavender, Jeremy T. Brudvik, Jacob O. Wobbrock and Richard E. Ladner

SketchWizard: Wizard of Oz Prototyping of Pen-Based User Interfaces Richard C. Davis, T. Scott Saponas, Michael Shilman and James A. Landay [Video]

Assieme: Finding and Leveraging Implicit References in a Web Search Interface for Programmers Raphael Hoffmann, James Fogarty, and Dan Weld

Relations, Cards, and Search Templates: User-Guided Data Integration and Layout Mira Dontcheva, Steven M. Drucker, David Salesin and Michael Cohen [Video]

Automatically Generating User Interfaces Adapted To User's Motor And Vision Capabilities Krzysztof Z. Gajos, Jacob O. Wobbrock and Daniel S. Weld

Gestures without libraries, toolkits or training: A $1 recognizer for user interface prototypes Jacob O. Wobbrock Andrew D. Wilson and Yang Li.

Mobile Social Software for the Developing World Beth Kolko, Erica Johnson, and Emma Rose

Communication as Information-Seeking: The Case for Mobile Social Software for Developing Regions Beth Kolko, Emma Rose, and Erica Johnson

Design Challenges and Principles for Wizard of Oz Testing of Location-Enhanced Applications Yang Li, Jason I. Hong and James A. Landay

An Alternative to Push, Press, and Tap-Tap-Tap: Gesturing on an Isometric Joystick for Mobile Phone Text Entry Jacob O. Wobbrock, Duen Horng Chau and Brad A. Myers

Toolkit Support for Developing and Deploying Sensor-Based Statistical Models of Human Situations James Fogarty and Scott E. Hudson

Biases in Human Estimation of Interruptibility: Effects and Implications for Practice Daniel Avrahami, James Fogarty and Scott E. Hudson

How it Works: A Field Study of Non-Technical Users Interacting with an Intelligent System Joe Tullio, Anind K. Dey, Jason Chalecki and James Fogarty

What Are You Looking For? An Eye Tracking Study of Information Usage in Web Search Ed Cutrell and Zhiwei Guan SIGCHI Honorable Mention Paper

Exploring Patterns of Social Commonality Among File Directories at Work John C. Tang, Clemens Drews, Mark Smith, Fei Wu, Alison Sue and Tessa Lau

An Eye Tracking Study on How People Search When the Target is not Shown on Top of the List Zhiwei Guan and Ed Cutrell

BrickRoad: A Light-weight Tool for Spontaneous Design of Location-enhanced Applications Alan Liu and Yang Li

"Get Real!" What's Wrong with HCI Prototyping and How Can We Fix It? Moderator: William Jones Panelists: Michael Arent, Victoria Bellotti, Mary Czerwinski, Jonathan Grudin, Tom Rodden, Jared M. Spool

Towards the Perfect Infrastructure for Usability Testing on Mobile Devices Rudy Schusteritsch, Carolyn Y. Wei and Mark LaRosa

Establishing Relationships for Designing Rural Information Systems Yael Schwartzman and Tapan S. Parikh

Beyond Current User Research: Designing Methods for New Users, Technologies, and Design Processes Workshop on the challenges of creating or adapting user research methods for use with new user groups, technologies, and design processes. Organizers: Judith Ramey, Stephanie Rosenbaum, Emma J. Rose, Elisabeth Cuddihy

Striking a C[h]ord: Vocal Interaction in Assistive Technologies, Games, and More Workshop on non-verbal acoustic interaction. Organizers: Adam J Sporka, Susumu Harada, Sri Kurniawan

Value Scenarios: A Technique for Envisioning Systemic Effects of New Technologies Lisa Nathan, Pedja Klasnja and Batya Friedman of the Value Sensitive Design Research Laboratory

Children Distinguish Conventional from Moral Violations in Interactions with a Personified Agent Nathan Freier 2nd Place Winner

The Indicator Browser: A Web-Based Interface for Visualizing UrbanSim Simulation Results Yael Schwartzman and Alan Borning

			MobileASL: Intelligibility of Sign Language Video as Constrained by Mobile Phone Technology Anna Cavender, Richard E. Ladner and Eve A. Riskin Best Student Paper For Deaf people, access to the mobile telephone network in the United States is currently limited to text messaging, forcing communication in English as opposed to American Sign Language (ASL). Mobile video phones have the potential to give Deaf people access to real-time mobile communication in their preferred language. However, even today's best video compression techniques can not yield intelligible ASL at limited cell network bandwidths. Motivated by this constraint, we conducted user studies with members of the Deaf Community to determine the intelligibility effects of video compression techniques such as region-of-interest encodings and reduced frame rates. more >>

			From letters to words: Efficient stroke-based word completion for trackball text entry Jacob O. Wobbrock and Brad A. Myers A major extension to our previous work on Trackball EdgeWrite that takes it from a character-level technique to a word-level one through a design called stroke-based word completion, which enables efficient word selection as part of the stroke-making process. A theoretical model shows this design to be 45.0% faster than a prior model for character-only strokes. A study with a subject with spinal cord injury comparing Trackball EdgeWrite to the onscreen keyboard WiViK, both using word prediction and completion, shows that Trackball EdgeWrite is competitive with WiViK in speed (12.09 vs. 11.82 WPM) and accuracy (3.95% vs. 2.21% total errors), but less visually tedious and ultimately preferred. The results also show that word-level Trackball EdgeWrite is 46.5% faster and 36.7% more accurate than the subject's prior peak performance with character-level Trackball EdgeWrite, and 75.2% faster and 40.2% more accurate than his prior peak performance with his preferred on-screen keyboard. An additional evaluation of the same subject over a two-month field deployment shows a 43.9% reduction in unistrokes due to stroke based word completion in Trackball EdgeWrite. more >>

			The Vocal Joystick: Evaluation of Voice-based Cursor Control Techniques Susumu Harada, James A. Landay, Jonathan Malkin, Xiao Li and Jeff A. Bilmes Computer interactions that assume the presence of a mouse-like device can pose a significant challenge for individuals with physical or situationally-induced motor impairments. The Vocal Joystick system has been developed to enable cursor control using continuous vocal parameters of the user's voice such as vowel quality and volume. In this paper, we present the Vocal Joystick system and the results from our study analyzing its expert performance as well as the comparative study using novice users against existing speech-based cursor control methods. more >>

			WebInSight: Making Web Images Accessible Jeffrey P. Bigham, Ryan S. Kaminsky, Richard E. Ladner, Oscar M. Danielsson and Gordon L. Hempton Images without alternative text are a barrier to equal web access. Our studies demonstrate that a large fraction of significant images on the web have no alternative. To help ameliorate the problem, we built WebInSight, a system that automatically formulates and inserts alternative text for many web images into web pages on-the-fly. Alternative text is cached and added after a web page is downloaded, minimizing negative impact to the browsing experience. more >>

			Indoor Wayfinding: Developing a Functional Interface for Individuals with Cognitive Impairments Alan L. Liu, Harlan Hile, Henry Kautz, Gaetano Borriello, Pat A. Brown, Mark Harniss and Kurt Johnson Assistive technology for wayfinding will significantly improve the quality of life for many individuals with cognitive impairments. The user interface of such a system is as crucial as the underlying implementation and localization technology. We built a system using the Wizard-of-Oz technique that let us experiment with many guidance strategies and interface modalities. Through user studies, we evaluated various configurations of the user interface for accuracy of route completion, time to completion, and user preferences. more >>

			Automatically Generating Custom User Interfaces for Users With Physical Disabilities Krzysztof Z. Gajos, Jing Jing Long and Daniel S. Weld Graphical user interfaces (GUIs) for desktop applications are typically optimized for "average" users who interact with computers via keyboard, mouse and a small range of display sizes. Part of the reason why some users with vision or motor impairments find it hard to use computers is not their inherent inability to use computers effectively but the mismatch between those users' individual needs and the designers' assumptions. We argue that a flexible automatic UI generation can help provide disabled users with custom-tailored user interfaces that optimally take advantage of these users' abilities -- a task that cannot be accomplished by human designers due to the idiosyncratic nature of many disabilities. We have built SUPPLE to automatically generate custom UIs and we are also building a system that allows non-experts to easily reparametrize the UI generator for the needs of individual users, thus making our solution scalable. more >>

Sensing from the Basement: A Feasibility Study of Unobtrusive and Low-Cost Home Activity Recognition James Fogarty, Carolyn Au and Scott Hudson

Summarizing Personal Web Browsing Sessions Mira Dontcheva, Steven Drucker, Geraldine Wade, David Salesin and Michael Cohen Best Student Paper Honorable Mention

In-stroke Word Completion Jacob Wobbrock and Brad Myers

Personalizing Routes Kayur Patel Mike Chen, Ian Smith and James Landay

Personalized Adaptive Interfaces Krzysztof Gajos

			Sketching with conceptual metaphors to explain computational processes. To explore how people conceptualize a complex system, 232 university students were asked to sketch how a search engine works. While the sketches reveal a diverse range of visual and conceptual approaches, a subset of the sketches exhibit an underlying regularity for describing algorithmic processes. To explain this regularity, I propose the conceptual metaphor: A SEARCH ENGINE IS A SERIES OF TEXT TRANSFORMATIONS and describe a set of mappings from sketchable graphic markings to abstractions in the search engine domain. I believe that this metaphor can be applied to enable people to more effectively conceptualize, describe, and explore complex systems. more >>

The Impact of Pre-Patterns on the Design of Digital Home Applications T. Scott Saponas, Madhu Prabaker, Gregory Abowd, and James Landay

External Representations in Ubiquitous Computing Design and the Implications for Authoring Tools Steven Dow, T. Scott Saponas, Yang Li, and James A. Landay