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With the increase in popularity of mobile technology, users can access location-aware information from virtually anywhere. Using assistive technologies, this allows people with disabilities to live more independently than ever before. For example, as people with visual impairments can not usually read the timetables posted at bus stops, a mobile application can leverage GPS and public transit information...
For the visually impaired it is challengeable to identify their position through maps, specifically in unfamiliar regions. In this article, we develop an audio-haptic You-are-here map system through a novel touchable tactile display. Users' position is rendered on the map, and users can explore the tactile surrounding environments freely. The results of a pilot study with blind users indicate the...
In recent years, earthquake, typhoon, snowflake and other natural disasters happened frequently and cause large number of casualties and economic losses. It needs to be further improved under the circumstances of sudden natural disasters. The solution to the problem is to provide data support for emergency response and scientific decision-making to commanders by uploading accurate, reliable and instant...
Nowadays service creation and consumption is an ordinary, everyday task. Although services are commonly associated to a server -in a fixed machine on the Web- at present services may also be offered from portable devices (i.e., PDAs, smartphones, etc.). Both service provider's and users' mobility requires a highly dynamic service usage, thus bringing about the necessity to develop and use services...
Until now navigation aids have primarily focused on outdoor scenarios, whether driving on highways or, more recently, walking through cities. These systems use the Global Positioning System (GPS) for position information. Indoor navigation however cannot rely on GPS data, as the signals do not penetrate building structure. Thus other techniques were developed to provide position information indoors,...
The rapid development of wireless communication and sensor technologies have enhanced the learning performance. Therefore, the web-based learning has been evolved into mobile learning and even ubiquitous learning in recent years. Ubiquitous learning facilitates interactive and context aware services and provide an intelligent learning environment to enable people to learn using any device at any place,...
In this paper, we present a novel method for image annotation and retrieval on mobile device by using contextual information. Image annotation is an effective way for content based image retrieval. However, manual annotation is an expensive and time consuming work, especially for mobile device. Here, we propose a semi-automatic way to give image annotation on mobile device. There are rich contexts...
In this paper, we propose a context-aware Input Method Editor (IME) as a ubiquitous service for improving the input of text on mobile devices. In our proposed IME, it estimates the context of users according to position information from GPS (Global Positioning System) sensor or a presence information from the Internet. Simultaneously, it generates a personal context-aware dictionary dynamically from...
Smartphones have been widely used in recent years due to their capabilities of supporting many applications from simple short message service messages to complicated location-based services. It is challenging for smartphones to enable their end users to manage all applications in all possible use cases to protect privacy or sensitive data. However, the security model for smartphone users is still...
Today's mobile devices have inherited many of the characteristics of desktop computing -- including the assumptions that the user's full attention and dexterity can be focused on the interface. Unfortunately, on-the-go users are impaired by their mobility and often find desktop-style Windows Icon Menu and Pointer (WIMP) interfaces difficult, if not impossible, to use while performing their primary...
Applications of 3 dimensional (3-D) virtual reality are now possible on current mobile phones due to the advances in mobile 3-D graphics technologies. However, the user-interface to these applications is generally still limited to the basic phone keypad which detracts from the sophisticated experience 3-D worlds can provide. In this paper we present a solution to this problem which utilizes the accelerometers...
A location and tracking system becomes very important to our future world of pervasive computing, where information is all around us. Location is one of the most needed information for emerging and future applications. Since the public use of GPS satellite is allowed, several state-of-the-art devices become part of our life, e.g. a car navigator and a mobile phone with a built-in GPS receiver. However,...
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