modeling of slip for wheeled mobile robots

Ngày tải lên: 26/10/2014, 14:31

Ngày tải lên: 26/10/2014, 14:32

... (EKF-SLAM).Explicit formulasfor twomobile platformsare presented. First,weshowthe case of asimple linearone-dimensionalmobile robot,the monobot .Then, we extend theanalysistothe more realisticcase of aplanarmobile ... some wayof tuning thememory length of thealgorithm. The twofunctionsproposed do so by meansofthe parameters α , β ,and a .The left plotinFigure1.8 shows thebehaviorofthe exponentialdecayrule forthe ... limit the value of the noise introduced by the measurement model. These arguments might lead to the formulation of a strategy for the com- putation of the appropriate number of landmarks to use,...

Ngày tải lên: 12/06/2014, 12:04

Ngày tải lên: 05/09/2013, 09:08

Ngày tải lên: 25/01/2014, 13:20

... perform the action , is the set of resources that are required to perform the action , is the average cost in performing , and is the average probability of successful completion of within for ... before the expiration of the . In the latter case, criticality is mitigated successfully before expires. Higher the RF for a criticality, lesser is the time (in terms of fraction of window -of- opportunity) ... under- stand the behavior of the manageability of criticalities. For sake of simplicity, we present simulation results for a system which can expect only three types of criticalities, thereby...

Ngày tải lên: 07/03/2014, 17:20

... Association for Computational Linguistics Discriminative Modeling of Extraction Sets for Machine Translation John DeNero and Dan Klein Computer Science Division University of California, Berkeley {denero,klein}@cs.berkeley.edu Abstract We ... Examples of two types of possible align- ment links (striped). These types account for 96% of the possible alignment links in our data set. alignment links A = {(i, j)} to an extraction set of bispans ... Ward, and Wei- Jing Zhu. 2002. BLEU: A method for automatic evaluation of machine translation. In Proceedings of the Annual Conference of the Association for Com- putational Linguistics. Andreas Stolcke....

Ngày tải lên: 07/03/2014, 22:20

... consequence of the sharing of a constant amount of LD between an increasing number of cells. From our measurements, and in agreement with published data [16,17], we found that LD typically consists of ... point of view, they allow the cell to dispose of excess metabolites by storing them in an inert form. When demand for these metabolites is high, they are read- ily available without the need for ... and promotes the rapid initiation of growth of quiescent cells exposed to glucose-containing media. TAG mobi- lization provides DAG and ⁄ or FA for the synthesis of phospholipids; forcing the system to utilize...

Ngày tải lên: 16/03/2014, 04:20

... a value of around 14 nmcorresponding to a p b value of around 1.4ì 10 23 m 3 , see Eq. 16—and for the size of the grain-grain contact a value of around 100 nm (one fifth of the value of the grain ... for the low sensor signals of those materials in spite of their high surface reactivity and guidance on how to attempt the improvement of the sensor performance. It also explains the origin of ... nmcorresponding to a p b value of around 4ì 10 25 m 3 and the value of the size of the grain-grain contact a value of around 6 nm (a bit more than one hundredth of the value of the grain size). Figure...

Ngày tải lên: 20/03/2014, 13:04

Ngày tải lên: 22/03/2014, 11:20

... combina- tion of lexical items. An improved understanding of language processing in the brain could yield a more biologically-informed model of semantic representation of lexical knowledge. We there- fore ... Proceedings of the 47th Annual Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 638–646, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP Quantitative modeling of the neural ... performed regression-based classification separately for the two types of ad- jectives. Notice that the number of phrases with object-modifying adjectives is much less than the number of phrases...

Ngày tải lên: 30/03/2014, 23:20

... 13 (a) (b) (c) 110 111 101 010 000 001 011 100 110 111 101 010 000 001 011 100 Center of upper cube Center of front cube Center of back cube Center of down cube Center of left cube Center of right cube Figure 9: Extracting nodes from ... did not change formation, and a three-party session key of the triangle composed of the three remaining nodes of the tetrahedron that the leaving node was part of. 6.4. Analysis of the Algorithms. ... Wireless Communications and Networking 11 Center of upper cube Center of front cube Center of back cube Center of down cube Center of left cube Center of right cube (a) (b) (e) (f) (c) (d) Figure...

Ngày tải lên: 21/06/2014, 11:20

... frequency band for high altitude platform third-generation mobile systems and, potentially, next generation mobile systems, mobile WiMAX, for example, the new penetration loss model can be used for system ... comparison of penetration losses as a function of the elevation angle for both frequencies and two types of buildings. For more clarity, only a fitted curve is shown for 2.0 GHz. The aim of this ... a lack of penetration models for HAP systems with the exception of an empirical model for building penetration loss at 2.0 GHz for high elevation angles [6]. This model was developed for a scenario,...

Ngày tải lên: 21/06/2014, 23:20

... number of techniques aim at deriving information regarding physical characteristics of humans, mainly in the form of 3D head or full-body models. The interest of the scientific community for anthro- pocentric ... surveillance videos, etc.) and extracts a wealth of useful information. A large cluster of algorithms target information related to the state or state transitions of individuals: presence and position/posture through ... 2 1 Department of Informat ics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece 2 Informatics and Telematics Institute, CERTH, 57001 Thermi-Thessaloniki, Greece 3 Department of Computing,...

Ngày tải lên: 22/06/2014, 00:20

... characteristics of the proposed method and the reference codec [14] for (a) Foreman, (b) Glasgow, (c) Akiyo, and (d) Miss America. Additional operations are performed for the calculation of the residual ... relevant to the sum of f x (y)in(3). Therefore, if we can efficiently predict the ZQDCT coefficients for the 63 AC coefficients, a lot of computations will be saved. The prediction algorithms for the 49 DCT ... Article Hybrid Modeling of Intra-DCT Coefficients for Real-Time Video Encoding Jin Li, Moncef Gabbouj, and Jarmo Takala Faculty of Computing and Electrical Engineering, Tampere University of Technology,...

Ngày tải lên: 22/06/2014, 00:20

... ference Robust Transmission for the Downlink of an OFDM-Based Mobile Communications System Markus Konrad and Wolfgang Gerstacker Institute of Mobile Communications, University of Erlangen-Nuremberg, ... performance results for the conven- tionalQAMschemewithaDIRof0dBinFigures9 to 11 are always inferior to that of the proposed scheme for spec- tral efficiencies of 1.0and1.5 bit/s/Hz. The results for ... after channel decoding for DIRs of at least 5 dB for the same spec- tral efficiency R. For higher values of DIR, gains up to 14 dB have been noticed. The superior performance of the pro- posed scheme...

Ngày tải lên: 22/06/2014, 06:20

... ference Robust Transmission for the Downlink of an OFDM-Based Mobile Communications System Markus Konrad and Wolfgang Gerstacker Institute of Mobile Communications, University of Erlangen-Nuremberg, ... performance results for the conven- tionalQAMschemewithaDIRof0dBinFigures9 to 11 are always inferior to that of the proposed scheme for spec- tral efficiencies of 1.0and1.5 bit/s/Hz. The results for ... after channel decoding for DIRs of at least 5 dB for the same spec- tral efficiency R. For higher values of DIR, gains up to 14 dB have been noticed. The superior performance of the pro- posed scheme...

Ngày tải lên: 22/06/2014, 19:20

... reserved. 1. INTRODUCTION Mobile positioning becomes of increasing interest for the wireless telecom operators. Indeed, many applications re- quire an accurate location information of the mobile (context-aware ... attached to a part of the body that is only affected by the moves of the user. The belt (or the hips) is an interesting part of the body for collecting information about the behavior of the user. Interests ... the mobile is moving. 2.1. Signal strength and propagation model The reception of a tuple of signal strengths does not lead di- rectly to the position of the device. A conversion of this tuple of...

Ngày tải lên: 22/06/2014, 23:20

Ngày tải lên: 22/06/2014, 23:20

Ngày tải lên: 23/06/2014, 00:20