Based on local audio feature and support vector regression (SVR), an adaptive blind audio watermarking algorithm in wavelet domain is proposed in this paper. the audio signal is partitioned into audio frames, and the ...
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Based on local audio feature and support vector regression (SVR), an adaptive blind audio watermarking algorithm in wavelet domain is proposed in this paper. the audio signal is partitioned into audio frames, and the watermark is embedded in wavelet domain. For each audio frame, the energy and the maximal peaks of its all sub-bands are extracted as the local features, and SVR is used to model the relationship between the local features and the embedding strength of the audio frame in order to adaptively control the embedding strength of the audio frame. Due to the good learning ability of SVR, the watermark can be correctly extracted under several different attacks. the proposed watermarking method doesn't require the use of the original audio signal. the experimental results show the proposed algorithm is robust to signal processing, such as lossy compression (MP3), filtering, re-sampling and re-quantizing, etc.
Over the centuries, research about oriental medicine has been used widely to heal many patients had diseases, but has the limitations point such as it is difficult to understand a scientific basis for the effects prec...
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Over the centuries, research about oriental medicine has been used widely to heal many patients had diseases, but has the limitations point such as it is difficult to understand a scientific basis for the effects precisely. Recently, in oriental medicine research parts have been actively to establish the scientific basis for the research centers and the demand for medical has increase more and more. Among these researches, one of oriental medicine therapy treatment, the acupuncture does not have side effect limelight by western medicine's surgery and medication. therefore, in this paper, to solve those problems, we propose an analysis of brain waves MFCC with acupuncture feedback of meridian point. It was quantitative brain wave analysis utilized the BCI technology that it designed for the brain disease care system and analyze brain waves MFCC by acupuncture feedback of meridian point using spectrogram. the quantitative brain wave characteristic analysis utilized BCI technology can show scientific basis for oriental medicine. the brain disease care system using tactile feedback enables to select effective meridian point.
Plagiarism is one form of academic dishonesty, which is often done by students in programming classes. In a large class, detecting plagiarism manually is both difficult and time-consuming, especially due to the numero...
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Plagiarism is one form of academic dishonesty, which is often done by students in programming classes. In a large class, detecting plagiarism manually is both difficult and time-consuming, especially due to the numerous modifications of the source code to conceal the *** designed and developed Deimos, a prototype of a source code plagiarism detector, which can be extended to handle other programming languages, simply by implementing new scanners and parsers. Deimos works in two steps: (1) parsing source code and transforming it into tokens, and then (2) comparing each pair of token strings obtained in the first step using Running Karp-Rabin Greedy String Tiling algorithm. Instructor can access Deimos via a web application interface that receives input parameters, triggers a background process, and displays the result. the web interface offers user friendliness while the background process prevents timeout and reduces bandwidth consumption. this approach was chosen since Deimos is intended to be used for processing more than 100 source code. the web application was implemented using PHP, while Java was used to implement the backend application, which is responsible for the background *** test, functional test, and nonfunctional test has been conducted. Detection time is 1 hour for processing 100 samples of beginner's source code taken from real assignment of our programming class where the average length of source code is 150 lines. this code similarity detector could also be used for other pedagogical tools, such as autograder, which checks consistency of source code based on a template or solution.
Graphic Processing Unit (GPU), with many light-weight data-parallel cores, can provide substantial parallelcomputing power to accelerate several general purpose applications. Boththe AMD and NVIDIA corps provide the...
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Graphic Processing Unit (GPU), with many light-weight data-parallel cores, can provide substantial parallelcomputing power to accelerate several general purpose applications. Boththe AMD and NVIDIA corps provide their specific high performance GPUs and software platforms. As the floating-point computing capacity increases continually, the problem of ``memory-wall'' becomes more serious, especially for array-intensive applications. In this paper, we optimize and implement two SPEC2k benchmarks mgrid and swim on multithreaded GPU using CUDA and Brook+. In order to reduce the pressure on off-chip memory, we make use of data locality in multi-level memory hierarchies and hide long memory access latency via double-buffers. To balance inter-thread parallelism and intra-thread locality, we further tune thread granularity for each kernel and empirically study the best equilibrium point for this problem. Flow control instruction can significantly impact the effective instruction throughput. Oriented to this problem, we introduce a diverge elimination technology to convert condition expression into computing operation. through all the optimizations, we gain the speedup of 10×-34× to the CPU implementation on the GPUs of AMD and NVIDIA respectively. Finally, we summarize and compares the GPUs from AMD and NVIDIA in hardware and software.
the proceedings contain 79 papers. the topics discussed include: message dissemination under the multicasting communication mode;e-science in the cloud with CARMEN;exploring biocomplexity: new challenges for high perf...
ISBN:
(纸本)0769530494
the proceedings contain 79 papers. the topics discussed include: message dissemination under the multicasting communication mode;e-science in the cloud with CARMEN;exploring biocomplexity: new challenges for high performance computing;multiprocessor scheduling for distance constrained task systems;task allocation in distributed embedded systems by genetic programming;distant-based resource placement in product networks;monitoring employees' emails without violating their privacy right;email categorization using multi-stage classification technique;a trap-door method for subscription-based mobile content;improved genetic algorithms and list scheduling techniques for independent task scheduling in distributed systems;a remote memory swapping system for cluster computers;a distributed approach for negotiating resource contributions in dynamic collaboration;and performance evaluation of a novel CMP cache structure for hybrid workloads.
this paper presents Tupleware, a cluster middleware which provides a distributed tuple space intended for use by computationally intensive scientific and numerical applications. It aims to add no extra burden to the a...
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ISBN:
(纸本)9780769534435
this paper presents Tupleware, a cluster middleware which provides a distributed tuple space intended for use by computationally intensive scientific and numerical applications. It aims to add no extra burden to the application programmer due to the distribution of the tuple space, and uses a decentralised approach and intelligent tuple search and retrieval to provide a scalable and efficient execution environment. Tupleware is evaluated using two applications: a modified quicksort and an ocean model, which demonstrates good scalability and a low system overhead.
For the given multiple patterns and a text string, firstly, a perfect hash function is constructed, the patterns are transformed into the unique pairs of integer values in parallel by the perfect hash function, the co...
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ISBN:
(纸本)9780769534435
For the given multiple patterns and a text string, firstly, a perfect hash function is constructed, the patterns are transformed into the unique pairs of integer values in parallel by the perfect hash function, the corresponding integer values are stored in a global hash table, and a recursion expression for computing hash function value of the signatures of each sub-string of text is also proposed. Secondly based on divisible load principle, a linear programming model for the optimal text distribution strategy is created and a parallel approximate multi-pattern matching algorithm allowing one error is presented on the heterogeneous cluster system which processors have different computing speeds and distinct communication capabilities and different memory sizes by taking into account computation and communication startup time and using the assigned processor distribution order. the experimental results on the cluster system of heterogeneous personal computers show that the presented parallel algorithm is averagely 25% faster than that one using the even text distribution strategy, and it obtains a nearly linear speedup and good scalability.
As grid software and grid applications grow in size and complexity, memory usage experiment and analysis have become more and more essential. In this paper, we investigate an Anti-TestCase-based approach to analyze th...
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ISBN:
(纸本)9780769534435
As grid software and grid applications grow in size and complexity, memory usage experiment and analysis have become more and more essential. In this paper, we investigate an Anti-TestCase-based approach to analyze the memory usage of GOS core software, and present a set of Anti-TestCases, which describe predefined memory problems of GOS core. this approach is applied with a set of automated test tools in controlled experiments including basic memory requirements, memory errors and memory usage of GOS core. Withthe experiment and analysis, we find several memory usage results of GOS core and they are valuable for other systems based on JVM, Tomcat and Axis. We also give some JVM memory configuration suggestions for better performance in the production server.
In this paper, a bit-rate estimation method is proposed, which could improve the performance of the H.264 encoder and avoid the strict data-dependences of mode decision. After that, an efficient parallel algorithm for...
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ISBN:
(纸本)9780769534435
In this paper, a bit-rate estimation method is proposed, which could improve the performance of the H.264 encoder and avoid the strict data-dependences of mode decision. After that, an efficient parallel algorithm for H.264 encoder with CABAC entropy coding is presented based on the Macro-Block Region Partition (MBRP) parallel method and the bit-rate estimation technique. Simulation results show that, the proposed parallel algorithm could improve the performance of H.264 encoder efficiently while maintaining the similar RD performance as JM 10.2.
this paper gives a survey about the impact of modern parallel/distributedcomputing paradigms over parallel Genetic Algorithms (PGAs). Helping the GA community to feel more comfortable withthe evolving parallel parad...
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ISBN:
(纸本)9780769533520
this paper gives a survey about the impact of modern parallel/distributedcomputing paradigms over parallel Genetic Algorithms (PGAs). Helping the GA community to feel more comfortable withthe evolving parallel paradigms, and marking some areas of research for the High-Performance computing (HPC) community is the major inspiration behind this survey. In the modern parallelcomputing paradigms we have considered only two major areas that have evolved very quickly during the past few years, namely, multicore computing and Grid computing. We discuss the challenges involved, and give potential solutions for these challenges. We also propose a hierarchical PGA suitable for Grid environment with multicore computational resources.
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