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In this work, a system for recognizing activities in the home setting using a set of small and simple state-change sensors is introduced. The sensors are designed to be " tape on and forget " devices that can be quickly and ubiquitously installed in home environments. The proposed sensing system presents an alternative to sensors that are sometimes(More)
Ubiquitous computing researchers are increasingly turning to sensor-enabled " living laboratories " for the study of people and technologies in settings more natural than a typical laboratory. We describe the design and operation of the PlaceLab, a new live-in laboratory for the study of ubiquitous technologies in home settings. Volunteer research(More)
In this paper, we present a real-time algorithm for automatic recognition of not only physical activities, but also, in some cases, their intensities, using five triaxial wireless accelerometers and a wireless heart rate monitor. The algorithm has been evaluated using datasets consisting of 30 physical gymnasium activities collected from a total of 21(More)
Three tools for acquiring data about people, their behavior , and their use of technology in natural settings are described: (1) a context-aware experience sampling tool, (2) a ubiquitous sensing system that detects environmental changes, and (3) an image-based experience sampling system. We discuss how these tools provide researchers with a flexible(More)
In this paper, we introduce MITes, a flexible kit of wireless sensing devices for pervasive computing research in natural settings. The sensors have been optimized for ease of use, ease of installation, affordability, and robustness to environmental conditions in complex spaces such as homes. The kit includes six environmental sensors: movement, movement(More)
We introduce the PlaceLab, a new "living laboratory" for the study of ubiquitous technologies in home settings. The PlaceLab is a tool for researchers developing context-aware and ubiquitous interaction technologies. It complements more traditional data gathering instruments and methods, such as home ethnography and laboratory studies. We describe the data(More)
Ubiquitous computing technologies create new opportunities for preventive healthcare researchers to deploy behavior modification strategies outside of clinical settings. In this paper, we describe how strategies for motivating behavior change might be embedded within usage patterns of a typical electronic device. This interaction model differs substantially(More)
Although manual and programmable home thermostats can save energy when used properly, studies have shown that over 40% of U.S. homes may not use energy-saving temperature setbacks when homes are unoccupied. We propose a system for augmenting these thermostats using just-in-time heating and cooling based on travel-to-home distance obtained from(More)
We present MITes (MIT Environmental Sensors): a portable kit of ubiquitous wireless sensing devices for real-time data collection of human activities in natural settings. The sensors designed to be used in two ways: (1) determining people's interaction with objects in the environment, and (2) measuring acceleration on different parts of the body. The(More)
We are developing technology and design strategies to support aging in place. To design and evaluate our solutions, we have created new tools that can be used to study behavior in actual homes. Our goal is to evaluate solutions in context, taking into account the complexity of real-world behavior that is often missing from laboratory environments. Two of(More)