linux and real time

Linux for embedded and real time applications

Ngày tải lên : 08/03/2016, 09:24

... What Is Real- time? Real- time is harder to explain The basic idea behind real- time is that we expect the computer to respond to its environment in time Many people assume that real- time means real ... 141 Interrupts and Exceptions 143 Critical Sections 144 Resources 145 Chapter 9: Linux and Real- time 147 Why Linux Isn’t Real- time 147 Two Approaches ... Audience and Prerequisites x Personal Biases xi Chapter 1: The Embedded and Real- time Space What Is Embedded? What Is Real- time? How and Why Does Linux...

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3D Videocommunication Algorithms concepts and real time systems in human centred communication

Ngày tải lên : 12/05/2013, 10:21

... analysis of audio and video and arbitrary view and sound synthesis to encoding of 3D audio and video Understanding of real- time implementation issues, as well as system architectures and network aspects ... 11 Coding and Standardization by A Smolic and T Sikora outlines the basic coding strategies frequently used for audio, image and video storage and transmission International coding standards such ... the internet via a camera and where remote users could control a robotic arm to plant and water seeds, and subsequently watch their plants grow and flourish in real- time 1.6 TELECOMMUNICATIONS...

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Báo cáo y học: "Mechanical effects of surgical procedures on osteochondral grafts elucidated by osmotic loading and real-time ultrasound" ppsx

Ngày tải lên : 09/08/2014, 14:22

... oversized and exact-sized cartilage plugs in osteochondral grafting using osmotic loading and real- time ultrasound The main findings of the study are that osmotic loading and real- time ultrasound ... loading and real- time ultrasound and to demonstrate the accuracy of ultrasound in identifying the cartilage damage after osteochondral graft procedures To this end, we evaluated oversized and exact-sized ... and real- time ultrasound Under osmotic loading, the changes in the amplitude and echo shifts can support the evaluation of cartilage damage in osteochondral grafts Moreover, osmotic loading and...

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Báo cáo y học: " “pp65 antigenemia and real time polymerase chain reaction (PCR) based-study to determine the prevalence of human cytomegalovirus (HCMV) in kidney donors and recipients with follow-up studies.”" pptx

Ngày tải lên : 12/08/2014, 02:20

... transplantation by real- time PCR of Page of which two were positive by pp65 antigenemia assay and 12 were negative by both real- time PCR and pp65 antigenemia assay One donor was positive only by realtime PCR ... antigenemia and real - time PCR The highest copy number detected by real - time PCR was 29, 768 copies/ml and lowest was copies/ml The highest positive pp65 cell count recorded among them was 78 cells and ... (chi-square test p = 0.037%) Correlation between pp65 and real time PCR results Among the 76 kidney donors 58 (73.68%) were positive for real time PCR and of the 56, 39 (51.0%) were positive for pp65...

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báo cáo khoa học: " Profiling microRNA expression in Arabidopsis pollen using microRNA array and real-time PCR" pps

Ngày tải lên : 12/08/2014, 03:20

... (miR159a and miR159b) have been sequenced more than 5,000 times in mature pollen Since the expression of these two miRNAs was not detected by either real- time PCR or regular RT-PCR (Table and Figure ... μl of each primers (900 nM), μl Taqman probe (250 nM), and 1.5 μl cDNA sample All real- time PCR reactions were performed in a StepOne real- time PCR machine (Applied Biosystems, Foster City, CA) ... Arabidopsis mature pollen using miRNA array and real- time PCR techniques Our results indicated that ~60% of known Arabidopsis miRNAs are expressed in mature pollen, and most of them are present at lower...

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Báo cáo khoa học: " A rapid and efficient method for studies of virus interaction at the host cell surface using enteroviruses and real-time PCR" potx

Ngày tải lên : 12/08/2014, 04:21

... assays, RNA extraction and realtime PCR analysis NJ drafted and wrote the manuscript MG developed the protocol for the binding assay, radiolabeled and purified the clinical isolate and performed the ... Coxsackie B viruses and adenoviruses and Science 1997, 275:1320-1323 Tomko RP, Xu R, Philipson L: HCAR and MCAR: the human and mouse cellular receptors for subgroup C adenoviruses and group B coxsackieviruses ... single-tube real- time reverse transcription-PCR assay J Clin Microbiol 2001, 39:4093-4096 Mohamed N, Elfaitouri A, Fohlman J, Friman G, Blomberg J: A sensitive and quantitative single-tube real- time...

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volumetric reconstruction and real-time deformation modeling of biomedical images

Ngày tải lên : 13/11/2014, 16:25

... analyzed, and utilized to model speciﬁc medical procedures Figure 1.5 shows examples of a volume-rendered and a surface-rendered torso of a patient Producing realistic data models and providing real- time ... Kenneth Barner and Dr Karl Steiner; my committee members, Dr Charles Boncelet, and Dr Chandra Kambhamettu; Dr Javier Garcia-Frias and Dr Gonzalo R Arce for invaluable discussions; and Dr Denny ... the proposed model can simulate elastic deformations of soft 10 organs and tissues with both high visual realism and real- time performance utilizing tetrahedral meshes of varied resolutions In...

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distributed decision-making and task coordination in dynamic, uncertain and real-time multiagent environments

Ngày tải lên : 14/11/2014, 12:51

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Integrated metrology and real time CD control

Ngày tải lên : 09/09/2015, 18:50

... monitoring requires in-line sensors and real- time algorithms to facilitate real- time analysis of sensor signals [14] Therefore, in order to implement real- time CD monitoring and control eﬀectively, we ... measured and reference spectrums is proposed for real- time monitoring and control Result shows CD non-uniformity can be signiﬁcantly reduced to less than 10nm With this system, real- time monitoring and ... equipment and each step has the possibility to induce some kind of error or defect and therefore stringent process monitoring and control along the line is required for real- time fault detection and...

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Model checking concurrent and real time systems the PAT approach

Ngày tải lên : 14/09/2015, 08:38

... is an important and nontrivial task There are two time semantics in the deﬁnition of real- time systems Discrete -time semantics [11] requires that all time readings are integers and all clocks ... of concurrent and real- time systems In particular, we have tried to address four issues related to model checking: (i) proposing a formal language to model concurrent and real- time systems, (ii) ... real- time systems is based on the notation Timed Automata [10, 149] Timed Automata are powerful in designing real- time models with explicit clock variables Real- time constraints are captured by explicitly...

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An enhance framework on hair modeling and real time animation

Ngày tải lên : 28/09/2015, 13:21

... Maximizing visual effect is a major problem in real- time animation One work was proposed on real- time hair animation based on 2D representation and texture mapping [Koh00, Koh01] Due to its 2D ... these techniques are not suitable for real- time hair animation Recently, Koh and Huang [Koh00, Koh01] proposed a strip based approach that animates in real- time But because of the 2D strip used, ... strips and between scalp and hair strips to provide a realistic animation A model of collision detection, response and avoidance is also specified Collision of hair strips against scalp and collision...

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DSP software development techniques for embedded and real time systems

Ngày tải lên : 22/09/2016, 10:03

... look first at real- time issues, then some specific embedded issues, and finally, at trends and issues that commonly apply to both realtime and embedded systems Real- Time Systems A real- time system ... environment Real- Time Embedded System (state) Figure 2.1 A real- time system reacts to inputs from the environment and produces outputs that affect the environment Hard Real- Time and Soft Real- Time Systems ... not real time and it grew in an unbounded way, and the system (the evacuation system) was considered a failure Real- time systems that cannot perform in real time are failures If the queue is really...

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Real-Time Linux

Ngày tải lên : 06/10/2013, 23:20

... file level into real- time and non real- time files Do not include any non real- time function in real- time files and vice versa In this example we have a hello_world.c: Contains non real- time function ... a timer timer_settime Arm the timer timer_gettime Return current timer value timer_getoverrun Return number of times timer expired between signal generation and delivery Ⅲ CLOCK_PROCESS_CPUTIME_ID: ... start _real_ text, & stop _real_ text – & start _real_ text); mlock(& start _real_ data, & stop _real_ data - & start _real_ data); mlock(& start _real_ bss, & stop _real_ bss - & start _real_ bss); } /* Non real- time...

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Real-Time Digital Signal Processing - Chapter 3: DSP Fundamentals and Implementation Considerations

Ngày tải lên : 19/10/2013, 23:15

... distributed random numbers with mean and variance 1: xn 2*sqrt(3)*(rand À 0:5); For two random variables x and y, we have Ex y Ex Ey, 3:3:15 i.e., the mean value of the sum of random ... stage downloads the compiled (or assembled) and linked program into the target hardware (such as EVM) and brings it to a real- time operation Thus the realtime debugging process is primarily constrained ... results between (a) and (b) (d) A 1, f 600 Hz, and fs kHz (e) Compare and explain the results (b) and (d) 14 Generate 1024 samples of pseudo-random numbers with mean and variance using the...

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Real-Time Digital Signal Processing - Chapter 5: Design and Implementation of FIR Filters

Ngày tải lên : 23/10/2013, 22:15

... non-causal and hence not physically realizable Instead we must compromise and accept a more gradual cutoff between passband and stopband, as well as specify a transition band between the passband and ... illustrated in Figure 5.1(a) The regions ! !c and ! > !c are referred to as the passband and stopband, respectively The frequency that separates the passband and stopband is called the cut-off frequency ... passband, the magnitude response has a peak deviation dp and in the stopband, it has a maximum deviation ds The frequencies !p and !s are the passband edge (cut-off) frequency and the stopband...

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Real-Time Digital Signal Processing - Chapter 6: Design and Implementation of IIR Filters

Ngày tải lên : 28/10/2013, 05:15

... passband is < F < Wp, the stopband is Ws < F < 1, and Wp < Ws For highpass filters, the normalized frequency range of stopband is < F < Ws, the passband is Wp < F < 1, and Wp > Ws For bandpass and ... passband and a monotonic characteristic in the stopband (see Figure 6.7a) The family of type II Chebyshev filters contains both poles and zeros, and exhibit a monotonic behavior in the passband and ... Chebyshev type II, and elliptic filters, respectively The parameters Wp and Ws are the normalized passband and stopband edge frequencies, respectively The range of Wp and Ws are between and 1, where...

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Real-Time Digital Signal Processing - Chapter 7: Fast Fourier Transform and Its Applications

Ngày tải lên : 28/10/2013, 05:15

... the DTFT of periodic and finite-length sequences Example 7.1: If the signals fxng are real valued and N is an even number, we can show that X 0 and X N=2 are real values and can be computed ... 7:1:17 and ImX k ÀImX N À k, Thus the DFT of a real sequence produces symmetric real frequency components and anti-symmetric imaginary frequency components about X(M) The real part ... algorithms: decimation-in -time and decimation-infrequency In the decimation-in -time algorithm, the input time sequence is successively divided up into smaller sequences, and the DFTs of these subsequences...

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Control and scheduling codesign flexible resource management in real time control systems feng xia you xian sun

Ngày tải lên : 01/01/2014, 18:47

... Control 2.2 Scheduling in Real- Time Systems 2.2.1 Real- Time Computing 2.2.2 Real- Time Communication 2.3 Control Loop Timing 2.3.1 Delay and Its Jitter 2.3.2 Sampling Period and Its Jitter 2.3.3 Data ... to Real- Time Control Systems [ARZ05a, MUR03] There have been a large number of attempts to apply non -real- time operating systems such as Linux, Windows CE, and Tiny OS as well as non -real- time ... knowledge repositories associated with real- time control, real- time computing, and real- time communication Furthermore, a lot of work in the area of control and scheduling codesign deals with general-purpose...

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Tài liệu The Design and Performance of a Real-time CORBA Event Service doc

Ngày tải lên : 19/02/2014, 18:20

... request demultiplexing [6], real- time I/O subsystem integration [7], and real- time concurrency and connection architectures [8] This paper extends our previous work [2] on real- time extensions to the ... concurrency mechanisms for real- time processing, such as the real- time threads of Mach [19] and real- time CPU scheduling priorities of Solaris [16] However, QoS research at the network and OS layers has ... and L Sha, “The Real- Time Publisher/Subscriber Inter-Process Communication Model for Distributed Real- Time Systems: Design and Implementation,” in First IEEE Real- Time Technology and Applications...

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Báo cáo " Multiband fiR Filter Design and implementation to recover real- time corrupted input speech using dsk tms320c6711 " pdf

Ngày tải lên : 05/03/2014, 14:20

... stopbands represented by a total of five bands: the first passband has normalized frequencies between and 0.17 (0 and 680Hz) with corresponding magnitude of 1; the second band is the first stopband, ... between 0.175 and 0.18 (700 to 720Hz), with a corresponding magnitude of 0; the second stopband has normalized frequencies between 0.395 and 0.4 (1580 to 1600Hz) The stopbands and passbands of this ... file, notch1.cof and notch2.cof, respectively Figure Ideal and designed impulse response and magnitude response of fiveband notch filter designed using MATLAB with Kaiser window Multiband FIR implementation...

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