Results 11 - 20
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14,378
The Determinants of Credit Spread Changes.
- Journal of Finance
, 2001
"... ABSTRACT Using dealer's quotes and transactions prices on straight industrial bonds, we investigate the determinants of credit spread changes. Variables that should in theory determine credit spread changes have rather limited explanatory power. Further, the residuals from this regression are ..."
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Cited by 422 (2 self)
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rates, r 10 t . To capture potential non-linear effects due to convexity, we also include the squared level of the term structure, (r 10 t ) 2 . Slope of Yield Curve We define the slope of the yield curve as the difference between Datastream's 10-year and 2-year Benchmark Treasury yields, slope
Achieving near-capacity on a multiple-antenna channel
- IEEE Trans. Commun
, 2003
"... Recent advancements in iterative processing of channel codes and the development of turbo codes have allowed the communications industry to achieve near-capacity on a single-antenna Gaussian or fading channel with low complexity. We show how these iterative techniques can also be used to achieve nea ..."
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Cited by 402 (2 self)
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for ergodic multiple-antenna channel. Index Terms—Wireless communications, BLAST, turbo codes, transmit diversity, receive diversity, fading channels, sphere decoding, soft-in/soft-out, concatenated codes 1
Face recognition using laplacianfaces
- IEEE Transactions on Pattern Analysis and Machine Intelligence
, 2005
"... Abstract—We propose an appearance-based face recognition method called the Laplacianface approach. By using Locality Preserving Projections (LPP), the face images are mapped into a face subspace for analysis. Different from Principal Component Analysis (PCA) and Linear Discriminant Analysis (LDA) wh ..."
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Cited by 389 (38 self)
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approach with Eigenface and Fisherface methods on three different face data sets. Experimental results suggest that the proposed Laplacianface approach provides a better representation and achieves lower error rates in face recognition. Index Terms—Face recognition, principal component analysis, linear
Robust frequency and timing synchronization for OFDM
- IEEE Transactions on Communications
, 1997
"... Abstract — A rapid synchronization method is presented for an orthogonal frequency-division multiplexing (OFDM) system using either a continuous transmission or a burst operation over a frequency-selective channel. The presence of a signal can be detected upon the receipt of just one training sequen ..."
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Cited by 386 (0 self)
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over many subcarriers allows acquisition at very low signal-to-noise ratios (SNR’s). Index Terms — Carrier frequency, orthogonal frequency-division multiplexing, symbol timing estimation.
Event-to-Sink Reliable Transport in Wireless Sensor Networks
- IEEE/ACM Trans. Networking
, 2005
"... Abstract—Wireless sensor networks (WSNs) are event-based systems that rely on the collective effort of several microsensor nodes. Reliable event detection at the sink is based on collective information provided by source nodes and not on any individual report. However, conventional end-to-end reliab ..."
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Cited by 376 (11 self)
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. Analytical performance evaluation and simulation results show that ESRT converges to the desired reliability with minimum energy expenditure, starting from any initial network state. Index Terms—Congestion control, energy conservation, event-to-sink reliability, reliable transport protocols, wireless sensor
Space-time block coding for wireless communications: performance results
- IEEE J. Select. Areas. Commun
, 1999
"... Abstract—We document the performance of space–time block codes [13], [14], which provide a new paradigm for transmission over Rayleigh fading channels using multiple transmit antennas. Data is encoded using a space–time block code, and the encoded data is split into n streams which are simultaneousl ..."
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Cited by 369 (13 self)
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their performance. It is shown that using multiple transmit antennas and space–time block coding provides remarkable performance at the expense of almost no extra processing. Index Terms — Diversity, multipath channels, multiple antennas, space–time codes, wireless communication. I.
Efficient collision detection using bounding volume hierarchies of k-dops
- IEEE Transactions on Visualization and Computer Graphics
, 1998
"... Abstract—Collision detection is of paramount importance for many applications in computer graphics and visualization. Typically, the input to a collision detection algorithm is a large number of geometric objects comprising an environment, together with a set of objects moving within the environment ..."
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Cited by 290 (4 self)
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and of the environment. Our algorithms have been implemented and tested. We provide experimental evidence showing that our approach yields substantially faster collision detection than previous methods. Index Terms—Collision detection, intersection searching, bounding volume hierarchies, discrete orientation polytopes
A control theoretic analysis of red,”
- in Proceedings of the 20th Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM ’01),
, 2001
"... Abstract-In this paper we use a previously developed nonlinear dynamic model of TCP to analyze and design Active Queue Management (AQM) control systems using RED. First, we linearize the interconnection of TCP and a bottlenecked queue and discuss its feedback properties in terms of network paramete ..."
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Cited by 290 (8 self)
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Abstract-In this paper we use a previously developed nonlinear dynamic model of TCP to analyze and design Active Queue Management (AQM) control systems using RED. First, we linearize the interconnection of TCP and a bottlenecked queue and discuss its feedback properties in terms of network
Sensing-throughput tradeoff for cognitive radio networks
- in Proc. IEEE Int. Conf. Commun.(ICC
, 2006
"... Abstract—In a cognitive radio network, the secondary users are allowed to utilize the frequency bands of primary users when these bands are not currently being used. To support this spectrum reuse functionality, the secondary users are required to sense the radio frequency environment, and once the ..."
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Cited by 291 (19 self)
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.2ms. This optimal sensing time decreases when distributed spectrum sensing is applied. Index Terms—Cognitive radio, sensing-throughput tradeoff, spectrum reuse, spectrum sensing, throughput maximization. I.
Detecting Moving Objects, Ghosts and Shadows in Video Streams
- IEEE Transactions on Pattern Analysis and Machine Intelligence
, 2003
"... Abstract—Background subtraction methods are widely exploited for moving object detection in videos in many applications, such as traffic monitoring, human motion capture, and video surveillance. How to correctly and efficiently model and update the background model and how to deal with shadows are t ..."
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Cited by 248 (24 self)
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proves fast, flexible, and precise in terms of both pixel accuracy and reactivity to background changes. Index Terms—Background modeling, color segmentation, reactivity to changes, shadow detection, video surveillance, object-level knowledge. 1
Results 11 - 20
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14,378