real time applications of distributed operating system

Ngày tải lên: 24/08/2014, 12:08

... Quality of service. An efficient use of the system re- sources is a must in embedded systems. Feedback- based approaches are being used to adjust the per for- mance or quality of service of the applications ... large variety of applications where embed- ded systems play an important role, from small stand-alone systems, like a network router, to complex embedded systems supporting several operating execution ... re- quirements. As a result of these limitations, the system hastodealwithanefficient use of the computational resources. (ii) Real- time application requirements. Some of the ap- plications to be...

Ngày tải lên: 21/06/2014, 22:20

Ngày tải lên: 07/11/2013, 09:15

... appearance of a cluster of repeated crossings of the section. In these cases, we averaged the crossing times in a cluster. Calculation of the cycle time based on the absolute maximum of each cycle ... pairs of points in the time series where the threshold P 32 = P 40 ẳ 7 was crossed in the increasing direc- tion. The cycle time is then the time between crossings of this section. Noise sometimes ... as the slope of the longest linear section in the graph of the logarithmic separation as a function of time for nearest neighbors in the time- delay embedding. The determination of this linear...

Ngày tải lên: 07/03/2014, 10:20

... Figure 1: Real- time corrector software. Source of alternates coverage (%) Word confusion matrix 52% Phoneme confusion matrix 37% Combined 60% Table 1: Coverage of substitutions (dev ... into consideration and the fact that 48% of the words were common to both lists. On this basis, we have constructed an alternate list of 10 words comprised of the most likely 7 words of case 1; the remaining ... two pre-computed sources of alternate word lists: 1. A list of frequently confused words was com- puted from all the available closed-captions of our speech recognition system for which corre- sponding...

Ngày tải lên: 08/03/2014, 03:20

... few more systems you need, each requiring a superhuman effort to build them all, but certainly within reach of a team of people per system. The rest of the book focuses on the management of data ... details that arose in the development of the real- time 3D game engine NetImmerse. The expression “game engine” was used because, at the time of the development of NetImmerse, that was what such large ... a logarithmic -time binary search to determine existence of an element. The ordering also supports logarithmic -time insertion and deletion. Unfortunately, real- time en- gines sometimes have performance...

Ngày tải lên: 04/06/2014, 11:53

... to be the start of a partial, and so the amplitude difference is equal to the amplitude of the peak, P k (n). 5 Evaluation of real- time ODFs This section provides evaluations of all of the ODFs described ... by each ODF to process real- time audio streams, with a buffer size of 512 samples, a frame size of 2048 samples, a linear prediction model of the order of 5, and a maximum of 20 peaks per frame ... detection accuracy of existing ODFs. Our algorithms are suitable for real- time use, and the resul ts were compiled from real- time data. In contrast, the results given in [19] are based on off-line processing, and...

Ngày tải lên: 20/06/2014, 22:20

... by each ODF to process real- time audio streams, with a buffer size of 512 samples, a frame size of 2048 samples, a linear prediction model of the order of 5, and a maximum of 20 peaks per frame ... to be the start of a partial, and so the amplitude difference is equal to the amplitude of the peak, P k (n). 5 Evaluation of real- time ODFs This section provides evaluations of all of the ODFs described ... treatment to operate with the limitations of strict real- time operation (defined in Section 2.1). As this article focuses on the evaluation of different ODFs in real- time, the peak-picking and thresholding...

Ngày tải lên: 21/06/2014, 00:20

... are delivered. A real- time system is a computer system that is able to run real- time applications and fulfill their requirements. 4.1. Hard and soft real- time applications Real- time systems and applications ... indicator of the hard real- time capabilities of a system: if the jitter is greater than a crit- ical threshold, the system cannot be considered as real- time. As a consequence, a real- time operating system ... the execution of the real- time application. On the other hand, if some nonreal -time interrupts occur between a real- time event and the wakeup of the real- time applications, the time spent by...

Ngày tải lên: 22/06/2014, 19:20

... audio signal, video applications are often implemented as soft real time, while most ra dio and audio applications are treated as hard real time. Contrarily to real- time control applications where ... The maximum value of m, for which increasing the startofiterationkofactori has no effectonthestarttimeof iteration q of actor j, with q<k+ m,canbecomputedin polynomial time. Proof. For each edge ... because of that, the instance k corresponds to the (k + 1)th firing. Furthermore, we denote the finishing time of iteration k of actor i by f (i, k) and the execution time of iteration k of i by...

Ngày tải lên: 22/06/2014, 19:20

... thus realizing an ideal feedback link. 4. MIMO ALGORITHMS AND OPTIMIZATION 4.1. Basic algorithmic strategies for real- time multiantenna systems with high data rates With the perspective of real- time ... feasibility of real- time high data rate MIMO techniques with state -of- the-art hardware and that more sophisticated baseband signal processing will be an essential part of future communication systems. ... the real- valued equivalent, the number of rows and columns doubles. Matrix inversion complexity of order O(N 3 ), where N is the number of Tx antennas. The real representation needs 2 3 · n 3 real...

Ngày tải lên: 22/06/2014, 23:20

... the noise canceller branch of the beamformer as well as the ATF identification, thus enabling real- time tracking of moving talkers. The novel method has applications in realistic environ- ments, ... we compare under nonstationary noise con- ditions the performance of the proposed real- time system to an offline system consisting of a TF GSC and a single- channel postfilter. The performance evaluation ... be fed back to the beamformer to enable the use of the method in real- time applications. Exploiting this information will also enable the tracking of the acoustical transfer functions (ATFs), caused by...

Ngày tải lên: 23/06/2014, 01:20

... Harapan” timetable is considered. The authors propose the architecture design of the system and show some experiments implementing the system. The objective of Chapter 16 is to show a set of single-objective ... The data were obtained based on the REAL- WORLD APPLICATIONS OF GENETIC ALGORITHMS Edited by Olympia Roeva Real- World Applications of Genetic Algorithms Edited by Olympia ... based on the principle of survival of the fittest during the evolution. The GA implements the “survival of the fittest” and “genetic propagation of characteristics” principles of biological evolution...

Ngày tải lên: 27/06/2014, 05:20

... Chapter 1 Typical Real- Time Applications 1.4.2 Multimedia Applications Finally, let us look at one of the most frequently encountered real- time applications: mul- timedia. A multimedia application ... versus Soft Real- Time Systems Now that we have seen several typical real- time applications, we are ready to discuss in depth the characteristics that distinguish them from nonreal -time applications. ... that run nonreal -time applications such as our editor and network browser, the computers and networks that run real- time applications are often hidden from our view. When real- time systems work...

Ngày tải lên: 28/06/2014, 10:20

Ngày tải lên: 08/08/2014, 21:21

Ngày tải lên: 08/08/2014, 21:21

Ngày tải lên: 08/08/2014, 21:21

Ngày tải lên: 08/08/2014, 21:21

Ngày tải lên: 08/08/2014, 21:21

Ngày tải lên: 08/08/2014, 21:21