Although the use of the World Wide Web has expanded tremendously in the past few years, we still know very little about how users are working with this new medium, what they attempt to accomplish, what works, what doesn't. One way to answer such…
Papers in (Sub-)Surface Sensing Technologies and Systems
(Sub-)Surface Sensing Technologies and Systems papers in Electrical and Electronic Engineering, I
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In the frame of our "I-Navigate" project, we create a software system that allows to extend digital navigation maps automatically and, thus, to improve their quality continuously. In order to achieve this, a track is gathered through tracing the…
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The ever-increasing power consumption and packaging density of integrated systems creates on-chip temperatures and gradients that can have a substantial impact on performance and reliability. While it is conceptually understood that a thermal…
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Satellite radar interferometry provides an important new means for measuring ice motion. To make absolute velocity measurements, ground-control points typically are required to refine interferometric baseline estimates. The vast scale and remote…
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The ice parameters of the Ob-Yenisey estuaries are studied using synthetic aperture radar (SAR) data from ERS and RADARSAT satellites. Specific features of the Ob, Gyda Bays, Yenisey Gulf ice cover and Ob-Enisey recurring polynya has been…
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Both topography and motion information are present in repeat pass ERS-1 interferograms over ice sheets. The authors demonstrate that the topography is separable from the surface displacement field when a sequence of radar images are available. If…
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During 1998, the University of Kansas Radar Systems and Remote Sensing Laboratory performed ice thickness measurements along several flights in the southern part of Greenland. The authors used an improved coherent radar depth sounder operating at…
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Several of the more important endmember-finding algorithms for hyperspectral data are discussed and their shortcomings highlighted. A new algorithm, ICE, which attempts to overcome these shortcomings is introduced. An example of is use is given.
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Three unique techniques have been developed to validate the Ice, Cloud, and Land Elevation Satellite (ICESat) mission altimetry data product and implemented at White Sands Space Harbor (WSSH) in New Mexico. One specific technique at WSSH utilizes…
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Since 2003, the full-waveform laser altimetry system onboard NASA's Ice, Cloud and land Elevation Satellite (ICESat) has acquired a worldwide elevation database. ICESat data are widely applied for change detection of ice sheet mass balance, forest…
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A novel method for synthesizing synthetic aperture radar (SAR) sea-ice imagery named IceSynth II is presented. A Markov random field model is assumed, and a conditional sampling approach is used to learn local conditional posterior probability…
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An orthogonal frequency division multiplexing (OFDM) system suffers performance degradation when the length of the cyclic prefix (CP) is less than the channel impulse response. The root cause of this degradation is the inter-carrier interference…
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In many crisis response-organizations it is hard to implement new technologies. Even if implementation is successful there is no guarantee that such systems will be accepted and used sustainably. Implementation of ICT systems across crisis-response…
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Small and medium enterprises (SMEs) must undertake continuous improvement of their existing processes, products and services. They must introduce products and services with extended capabilities to create more value for their customers. In a…
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Bangladesh is now one of the world leaders in using telecommunication (mainly phone) for poverty alleviation. Village Pay Phone (VPP) Program - an NGO led initiative has been hailed as one of the first program to use telephone for poverty…
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Other research-oriented countries might benefit from the vision and experience of both Brazil and Ireland in their quest for a place on the global ICT stage.
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Information and communications technologies are generally regarded as new tools that can serve as effective agents of positive economic, social and political change in developing regions. However, the tendency to see these technologies as…
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This paper reports on a small and medium enterprise (SME) survey carried out by the ResearchICTAfrica (RIA) in 14 African countries. It argues that the negative return on investment reported in the literature can be attributed to the failure to…
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Identifying the specific contribution of the use of ICTs to specific development goals has proven to be extremely difficult. This paper argues that instead of trying to make ICTs fit with a linear conceptualisation of impacts and an often…
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This paper examines two parallel case studies to promote remote medical consultation in Ghana. These projects, initiated independently by different researchers in different organizations, both deployed ICT solutions in the same medical community in…
Papers in associated sub-disciplines
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