coherence
RSS coherenceThe Unified File Cache (UFC) in HP-UX 11i V3
White Paper If an application uses the different types of access simultaneously to access data in a file, then HP-UX does not guarantee coherence because the same data might reside in both caches. The Unified File Cache (UFC) - a new feature in HP-UX 11i v3... [08 May 2007]
Estimating Disparity and Occlusions in Stereo Video Sequences
White Paper The algorithm is also able to exploit temporal coherence more appropriately than many previous approaches to temporal stereo, by employing additional states in the Markov random field. This paper proposes an algorithm for estimating disparity and... [08 May 2007]
On Performance Limits of MIMO-OFDM Systems Over Block-Fading Channels
White Paper This bound not only determines the merit of codes in the sense of error performance, but it also provides a tool to explore the performance limits of system in terms of parameters such as number of antennas, coherence time, coherence bandwidth... [13 Apr 2007]
Spherical Linear Interpolation for Transmit Beamforming in MIMO-OFDM Systems With Limited Feedback
White Paper To reduce the feedback required, this paper proposes to exploit channel coherence to send back only a fraction of the beamforming vectors. The coherence of the transmit beamforming vectors is established. [11 Apr 2007]
Concatenated Codes Design for OFDM Based Wireless Local Area Networks
White Paper The advantages of OFDM systems are high spectrum efficiency, longer symbol duration against Inter-Symbols Interference (ISI) effect in multi-path environments, and narrow transmission band of each sub-carrier within coherence bandwidth such that... [11 Apr 2007]
Using Uncacheable Memory to Improve Unity Linux Performance
White Paper Although cache is popular, it is expensive to assure cache coherence and it is not advantageous with a poor locality program. This paper points out that uncacheable memory, to a memory area with cache disabled, will have better performance in some... [01 Apr 2007]
Metropolis and SOA Governance
White Paper In the collaborative planning approach, order and coherence emerge from distributed activity, with no central design authority. Each unit of procurement, development, or maintenance activity has to be regarded as a project, with project outputs... [31 Mar 2007]
Checking Cache-Coherence Protocols With TLA+
White Paper This paper describes the authors' experience using TLA+ and TLC to verify cache-coherence protocols. The authors have a great deal of experience using the specification language TLA+ and its model checker TLC to analyze protocols designed at... [05 Apr 2006]
DHL Wins Prestigious itSMF Award
White Paper This included the establishment of three major IT Services Centers with a common service desk platform - named Global Service Desk - for all organizations as well as a common set of ITIL based processes and working procedures for service coherence. [14 Mar 2006]
Electronic Government and Electronic Civics
White Paper They are concerned with individuals and the groups they form and sustain in order to bring coherence and stability to community life. Electronic government and electronic civics embrace a wide range of topics. [23 Aug 2005]
An OFDM / Zero Forcing Beamformer for Smart Antennas in Indoor Environments
White Paper This paper investigates the effect of the dimensions of an arbitrary indoor environment on the coherence bandwidth of the wireless wideband channel as well as its effect on the beamformer patterns. An algorithm for adapting the weights of a zero... [26 Jul 2005]
Investigation of Several Types of Nonlinearities for Use in Stereo Acoustic Echo Cancellation
White Paper The effectiveness is quantified by the mutual coherence of the transformed signals. This paper investigates several types of nonlinearities used for the unique identification of receiving room impulse responses in stereo acoustic echo cancellation. [07 Apr 2005]
A Frequency-Domain Double-Talk Detector Based on Normalized Cross-Correlation Vector
White Paper The paper shows that the novel detection statistic can be obtained from the pseudo-coherence vector which quantifies the level of correlation between transmission and receiving room signals. This paper presents a frequency-domain calculation scheme... [06 Apr 2005]
SP2: Businesses slowly accepting Windows update
News We're noticing a lack of coherence between what people want to do and what people are doing. Microsoft has urged businesses running Windows XP to upgrade their machines to take advantage of added security features but only a quarter of XP corporate... [04 Apr 2005]
Homeland Security Office: Issues and Options
White Paper OHS's mandate was to bring direction and coherence to homeland security at the federal level and also to integrate the full range of such activities across federal, state and local jurisdictions. In response to the September 11, 2001 terrorist... [20 Feb 2005]
