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Portable sensory devices carried by humans - which are referred to as human probes - facilitate easy-to-use sensing and monitoring of urban areas. However, when each human probe individually senses and transmits information, the sensing activity is inefficient in terms of energy consumption. In this paper, we propose an architecture of quality-enhanced urban information blending and aggregation (Aquiba),...
Federation of ubiquitous applications to our daily lives requires enabling the use of those applications on terminals that end-users can use without intensive knowledge on computers or networks. This paper presents the techniques for cellular phones to achieve this goal, which consist of a sensor data transceiver, and the software for sensor data utilization. Users are allowed to leverage ubiquitous...
We describe an energy reservation system which manages energy consumption for each individual application. Our system targets sensor networking environments, which supports running of multiple applications. This work guarantees application service time, which allows the service provider to predict and control the lifetime of a system.
We present a novel mobile memory aid tool, called ClickCatalog System (http://www.ht.sfc.keio.ac.jp/atreader/). In our daily lives, we find many interesting items during shopping, in exposition events, or in conferences. We often try to remember them for later recall by writing memos, taking pictures, etc. Those hints (notes and pictures) are, however, easy to be lost. Using ClickCatalog System, users...
We propose a novel tool, called objSampler, with which users can record and recall "encounters" with objects in ubiquitous computing environments. We encounter various things, individuals, and places in the real world either consciously, meaning encounters that we are aware of, or unconsciously, meaning those we are unaware of but physically close to them. While some of those encounters...
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