BibSonomy publications for /author/XuTue Feb 14 04:46:53 CET 2012Transportation Research Part C-emerging Technologies#apr#285--98Urban traffic flow prediction using a fuzzy-neural approach RID A-7258-2008102002This paper develops a fuzzy-neural model (FNM) to predict the traffic flows in an urban street network, which has long been considered a major element in the responsive urban traffic control systems. The FNM consists of two modules: a gate network (GN) and an expert network (EN). The GN classifies the input data into a number of clusters using a fuzzy approach, and the EN specifies the input-output relationship as in a conventional neural network approach. While the GN groups traffic patterns of similar characteristics into clusters, the EN models the specific relationship within each cluster. An online rolling training procedure is proposed to train the FNM, which enhances its predictive power through adaptive adjustments of the model coefficients in response to the real-time traffic conditions. Both simulation and real observation data are used to demonstrative the effectiveness of the method. (C) 2002 Elsevier Science Ltd. All rights reserved.Mon Feb 13 22:30:48 CET 2012Nanotechnology18185701Strain controlled thermomutability of single-walled carbon nanotubes202009Heat-Transfer-Solids Heat-Transfer Carbon nanotubes are superior materials for thermal management and phononic device use due to their extremely high thermal conductivity and unique one-dimensional geometry. Here we report a systematic investigation of the effects of mechanical tensile, compressive and torsional strain on the thermal conductivity of single-walled carbon nanotubes using molecular dynamics simulation. In contrast to conventional predictions for solids, an unexpected dependence on the applied strain is revealed by the low-dimensional nature and tubular geometry of carbon nanotubes. Under tension, the thermal conductivity is reduced due to the softening of G-band phonon modes. Under compression—in contrast to the case for conventional theories for solids—geometric instabilities lower the thermal conductivity due to the scattering, shortening of the mean free path and interface resistance that arise from localized radial buckling. We find that when torsional strain is applied, the thermal conductivity drops as well, with significant reductions once the carbon nanotube begins to buckle. This thermomutability concept—the ability to control thermal properties by means of external cues—could be used in developing novel thermal materials whose properties can be altered in situ .Mon Feb 13 22:20:51 CET 2012ACS NanoPMID: 1970229692767-2775Nanoengineering Heat Transfer Performance at Carbon Nanotube Interfaces32009Heat-Transfer-Solids Heat-Transfer Carbon nanotubes are superb materials for nanoscale thermal management and phononic devices applications, due to their extremely high thermal conductivity (3000−6600 W/mK) and quasi-one-dimensional geometry. However, the presence of interfaces between individual carbon nanotubes as found widely in nanocomposites, nanoelectronics, and nanodevices severely limits their performance for larger scale applications. Solving this issue requires a deep understanding of the heat transfer mechanism at this nanoscale interface between low-dimensional structures, where conventional models developed for interfaces in bulk materials do not apply. Here we address this challenge through a bottom-up approach based on atomistic simulations. We demonstrate that the huge thermal resistance of carbon nanotube junctions can be significantly improved through modifying the molecular structure at the interface to enhance both the matching of phonon spectra and phonon mode coupling. Specifically, two approaches based on polymer wrapping and metal coatings are investigated here and have shown to improve both the structural stability and interfacial thermal conductivity of carbon nanotube junctions. By properly designing the interface molecular structure between individual carbon nanotubes, significant performance gains up to a factor of 4 can be achieved. These results pave the way for future designs of thermal management networks and phononic devices with thermally transparent and structurally stable interfaces. Mon Feb 13 19:00:52 CET 2012Edinburgh, ScotlandProceedings of the Collaborative Web Tagging Workshop at the WWW 2006mayTowards the Semantic Web: Collaborative Tag Suggestions2006taggingsurvey suggestions pragmatics Content organization over the Internet went through several interesting phases of evolution: from structured directories to unstructured Web search engines and more recently, to tagging as a way for aggregating information, a step towards the semantic web vision. Tagging allows ranking and data organization to directly utilize inputs from end users, enabling machine processing of Web content. Since tags are created by individual users in a free form, one important problem facing tagging is to identify most appropriate tags, while eliminating noise and spam. For this purpose, we define a set of general criteria for a good tagging system. These criteria include high coverage of multiple facets to ensure good recall, least effort to reduce the cost involved in browsing, and high popularity to ensure tag quality. We propose a collaborative tag suggestion algorithm using these criteria to spot high-quality tags. The proposed algorithm employs a goodness measure for tags derived from collective user authorities to combat spam. The goodness measure is iteratively adjusted by a reward-penalty algorithm, which also incorporates other sources of tags, e.g., content-based auto-generated tags. Our experiments based on My Web 2.0 show that the algorithm is effective.Mon Feb 13 15:23:25 CET 2012Proc. 8th Annu. Europ. Symp. on Algorithms (ESA'00)368--379Lecture Notes in Computer ScienceNew Algorithms for Two-Label Point Labeling18792000myown Mon Feb 13 15:23:25 CET 2012junHKUST-TCSC-2000-06New Algorithms for Two-Label Point LabelingTechnical report2000myown Mon Feb 13 15:23:25 CET 2012Tagungsband der Informatiktage{Ein neuer Algorithmus zur Beschriftung von Punkten mit je zwei Kreisen}2000myown Mon Feb 13 15:23:25 CET 2012Proc. 11th Annu. Int. Symp. Algorithms Comput. (ISAAC'00)422--431Lecture Notes in Computer ScienceA Better Lower Bound for Two-Circle Point Labeling19692000myown Mon Feb 13 15:23:25 CET 2012International Journal of Computational Geometry and Applications4269--281A Simple Factor-2/3 Approximation Algorithm for Two-Circle Point Labeling122002myown multi-label_point_labeling cartography approximation_algorithm Voronoi_diagram Given a set $P$ of $n$ points in the plane, the two-circle point-labeling problem consists of placing $2n$ uniform, non-intersecting, maximum-size open circles such that each point touches exactly two circles. \par It is known that this problem is NP-hard to approximate. In this paper we give a simple algorithm that improves the best previously known approximation factor from $4/(1+\sqrt{33}) \approx 0.5931$ to 2/3. The main steps of our algorithm are as follows. We first compute the Voronoi diagram, then label each point \emph{optimally} within its cell, compute the smallest label diameter over all points and finally shrink all labels to this size. We keep the $O(n \log n)$ time and $O(n)$ space bounds of the previously best algorithm.Mon Feb 13 00:00:00 CET 2012IEEE Communications Magazine630-37Fundamental trade-offs on green wireless networks.492011dblp Mon Feb 13 00:00:00 CET 2012IEEE Communications Magazine428-35GRS: The green, reliability, and security of emerging machine to machine communications.492011dblp Mon Feb 13 00:00:00 CET 2012IEEE Communications Letters9582-584A batch processing constant modulus algorithm.82004dblp Mon Feb 13 00:00:00 CET 2012IEEE T. Instrumentation and Measurement2286-296Fuel-Type Identification Using Joint Probability Density Arbiter and Soft-Computing Techniques.612012dblp Mon Feb 13 00:00:00 CET 2012New Directions in Web Data Management 1series/sci/2011-331311-346Studies in Computational IntelligenceMigrating Legacy Assets through SOA to Realize Network Enabled Capability.3312011dblp Mon Feb 13 00:00:00 CET 2012Computer and Information Scienceseries/sci/2010-31759-72Studies in Computational IntelligenceProgramming Expertise during Incremental Software Development: An Empirical Study.3172010dblp Mon Feb 13 00:00:00 CET 2012NLPKEconf/nlpke/2011122-125Parsing-based automatic Chinese term extraction.2011dblp Mon Feb 13 00:00:00 CET 2012NLPKEconf/nlpke/2011272-279DBS analysis of Chinese noun phrases.2011dblp Mon Feb 13 00:00:00 CET 2012NLPKEconf/nlpke/201151-55A head-annotated synchronous context-free grammar for hierarchical phrase-based translation.2011dblp Mon Feb 13 00:00:00 CET 2012ICCAconf/icca/20111044-1048On application of time-frequency analysis to communication signal detection and estimation.2011dblp Mon Feb 13 00:00:00 CET 2012ICCAconf/icca/20111316-1319Group decision-making retrieval based multi-objective evaluation optimizing setting method.2011dblp