Information and communication technology (ICT) has become a generic and indispensable tool for addressing and solving problems in such diverse areas as management, social and health services, transportation, security ...
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ISBN:
(数字)9781860948534
ISBN:
(纸本)9781860948275
Information and communication technology (ICT) has become a generic and indispensable tool for addressing and solving problems in such diverse areas as management, social and health services, transportation, security and education. As the cost of equipment drops dramatically, it also becomes widely accessible in the developing countries. However, problems of high costs for adequate training of personnel, access to state-to-the-art software and the consultancies needed to facilitate access to ICT can constitute highly dissuasive factors in the dissemination of ICT in developing *** volume describes a series of successful initiatives for the insertion of ICT in developing economies. It also identifies significant problems that are likely to be encountered, and suggests useful solutions to these problems. It therefore serves as a useful tool for example applications, and for the successful assimilation of these technologies in developing societies and countries.
The proceedings contain 67 papers. The topics discussed include: combinatorial generation of matroid representations: theory and practice;detection of certain false data races from runtime traces;representing series-p...
ISBN:
(纸本)1860948278
The proceedings contain 67 papers. The topics discussed include: combinatorial generation of matroid representations: theory and practice;detection of certain false data races from runtime traces;representing series-parallel graphs as intersection graphs of line segments in three directions;finding the convex hull of a dense set;probabilistic load balancing with optimal resources set of nodes in clusters;a new heuristic algorithm for multi-dimension multiple-choice knapsack problem in distributed system;the complexity of the Pk partition problem and related problems in bipartite graphs;a constant-time selection algorithm on an larpbs;reducing crossing number of multi-color rectilinear Steiner trees using monochromatic partitioning;minimizing capacitated tree covers of graphs;evaluation of shortest path routing algorithms in multi connected distributed loop networks;and experimental studies on representation complexity and error rates of iteratively composed features.
We present two efficient, deterministic, distributed and scalable service discovery algorithms that are suitable for both grid and ubiquitous computing environments. Our first service discovery algorithm assumes the p...
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ISBN:
(纸本)1860948278
We present two efficient, deterministic, distributed and scalable service discovery algorithms that are suitable for both grid and ubiquitous computing environments. Our first service discovery algorithm assumes the presence of collision detection capabilities at each of the nodes or devices and runs in O{n log n) time in the worst case, n being the number of nodes. The second algorithm does not assume collision detection capabilities of the devices. It has a worst case run time of O(nD) time, D being the diameter of the network.
Energy is a scarce resource in ad hoc mobile networks, making power control a crucial technique. For sake of simplicity, most existing power control protocols only consider the energy cost of transmissions. In this pa...
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ISBN:
(纸本)1860948278
Energy is a scarce resource in ad hoc mobile networks, making power control a crucial technique. For sake of simplicity, most existing power control protocols only consider the energy cost of transmissions. In this paper, we consider a more realistic model of power control in which the energy cost of the receiving nodes is also taken into account. This paper presents protocols that can not only achieve energy savings but can actually increase the effectiveness by bringing significant energy savings per successful packet for denser networks.
Mobile payment hype posits that Mobile Commerce will deliver e-commerce services directly into the consumers' hands - anytime, anywhere - using wireless technologies. However our research has indicated that in the...
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ISBN:
(纸本)1860948278
Mobile payment hype posits that Mobile Commerce will deliver e-commerce services directly into the consumers' hands - anytime, anywhere - using wireless technologies. However our research has indicated that in the short term at least these services will likely be low value and various mobile payment initiatives have failed or will fail. Applying mobile access to computing creates both tremendous commercial opportunities and complexity, yet will make computing globally pervasive and ubiquitous. Providing such services is fraught with problems such as legal and security issues as well as the need to track payments whilst the consumer is on the move and the mobile device may drop out. Customers prefer a choice in the channels through which they do business and the same applies to mobile payments as well. The research questions are: Is it necessary to partner to achieve success in the mobile payment area? Is it a case of partner or perish? This paper reports on three Australian Case studies to explore the current state of mobile financial transactions and illustrates the difficulties faced by both mobile payment enablers and 10090 consumers.
Given a set of m clauses on n propositional variables, where each clause contains at most two literals and is weighted by a positive real, MAX-2-SAT asks to find a truth assignment that maximizes the total weight of s...
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ISBN:
(纸本)1860948278
Given a set of m clauses on n propositional variables, where each clause contains at most two literals and is weighted by a positive real, MAX-2-SAT asks to find a truth assignment that maximizes the total weight of satisfied clauses. In this paper, we propose two branch-and-bound algorithms for solving MAX-2-SAT exactly. Our algorithms feature two new transformation rules and two efficient algorithms for computing lower bounds. Computational comparisons on benchmark instances disclose that these algorithms are highly effective in reducing the number of search tree nodes as well as computation time of branch-and-bound algorithms.
The aim of this study is to develop a system that provides 3-dimensional visualization of orthodontic treatments. Dental plaster models and corresponding orthopantomogram (dental panoramic tomogram) are first digitize...
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ISBN:
(纸本)081945852X
The aim of this study is to develop a system that provides 3-dimensional visualization of orthodontic treatments. Dental plaster models and corresponding orthopantomogram (dental panoramic tomogram) are first digitized and fed into the system. A semi-auto segmentation technique is applied to the plaster models to detect the dental arches, tooth interstices and gum margins, which are used to extract individual crown models. 3-dimensional representation of roots, generated by deforming generic tooth models with orthopantomogram using radial basis functions, is attached to corresponding crowns to enable visualization of complete teeth. An optional algorithm to close the gaps between deformed roots and actual crowns by using multi-quadratic radial basis functions is also presented, which is capable of generating smooth mesh representation of complete 3-dimensional teeth. User interface is carefully designed to achieve a flexible system with as much user friendliness as possible. Manual calibration and correction is possible throughout the data processing steps to compensate occasional misbehaviors of automatic procedures. By allowing the users to move and re-arrange individual teeth (with their roots) on a full dentition, this orthodontic visualization system provides an easy and accurate way of simulation and planning of orthodontic treatment. Its capability of presenting 3-dimensional root information with only study models and orthopantomogram is especially useful for patients who do not undergo CT scanning, which is not a routine procedure in most orthodontic cases.
A new fast 3D profilometry is presented in this paper. Although the phase measuring method can reach more high precision, its real measurement speed is very low and can't be applied on production lines because of ...
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ISBN:
(纸本)081945852X
A new fast 3D profilometry is presented in this paper. Although the phase measuring method can reach more high precision, its real measurement speed is very low and can't be applied on production lines because of its phase-shift operations. Three lines CCD arrays, 1024 pixels each, are mounted together with the same distance intervals. Needless to perform phase shift operations, the CCD can consecutively scan and grab 3 phase distributed pictures which will be separately calculated by 3 DSP processors. Thus the whole measurement process is finished. The experimental results show that the phase measurement system by using three-line CC,D has high application values for its high precision and speed.
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