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Breadth-first search is a building block of many graph algorithms. Because BFS is memory-bound, parallelizing BFS on a multi-core computer must consider issues of data hazards, effects of atomic operations on memory throughput, and the size of the last level cache. Additionally, graph algorithms must cope with non-sequential memory access, which defeats cache prefetching and leads to a high cache...
This paper reports on the design and development of a compact micro-electrocorticography (μECoG) system. The system is designed to record 8 channels of ECoG signals. Recorded neural data are sent off the system through a capacitive data telemetry link to the external world. The system has been prototyped using off-the-shelf electronic components and custom-designed electrodes, link, and package. For...
Road traffic congestion remains a global phenomenon that causes great problems in the cities of the world; especially developing countries, resulting in massive delay, unpredictable travel times, increased fuel consumption, man-hour and monetary loss. In order to get a better solution, one of the preposition is to divert traffic to less congested route. One of the solution of collecting road traffic...
The Ultra-DIMM constituted by DRAM and Flash memory is a promising solution used to tackle the challenges existing in traditional DRAM in terms of energy consuming and scalability. In this hybrid memory system, DRAM is used as the data buffer of Flash memory due to the performance and endurance gaps between main memory and Flash. However, the inconsistency of access granularity between the main memory...
Object instance recognition enables the realization of many potential applications, such as information retrieval, scene understanding and human computer interaction. However, it is still a challenging problem in computer vision. The appearance of an object is affected by variations in illumination, viewpoint and occlusion. In this contribution, we propose an object instance recognition method based...
Searching is a prime operation in computer science and numerous methods has been devised to make it efficient. Hashing is one such searching technique with objective of limiting the searching complexity to O (1) i.e. finding the desired item in one attempt. But achieving complexity of O (1) is quite difficult or usually not possible. This happens because there is no perfect mapping function for insertion...
Now a days everything around the globe is connected via networks like information, places and events which make a tangle of connections. Analyzing social network is to make sense of these complex connections. This work represents the framework to analyze Twitter social media tweets using Network X and Twitter API. Python language tool IPython/Jupyter is used to examine the networks by applying visual...
With the highly demanded requirements for manipulating large scientific datasets, scientists are in need of flexible cluster-level software to execute fast scientific data analysis. In this paper, we discuss whether the Apache Spark framework is suitable for scientific data management. We present our system SparkArray, which extends Spark with a multidimensional array data model and a set of common...
C is a basic computer language widely used in both industry and education. Many computer programming beginners choose C as the first computer language to learn. But it is difficult for the beginners, especially for high-school students, to learn C programming because the learning supporting environment is not enough. This research proposes PROVIT(PROgramming VIsualization Tool) for Web, an e-Learning...
A new technique for synthesis of planar rectangular arrays is presented. Using the specified design requirements for side lobe level and half-power beamwidths in the principal planes, the number of elements and element excitation currents are determined. These arrays are constructed using the patterns of uniformly excited rectangular arrays as building blocks. An important feature of these arrays...
Section 2. Information and communication technologies. IEEE-paper. The automatic synthesis method of the timeparametrized (timing) parallel programs for the multiprocessing computers is suggested. The synthesis method support architecture and configuration of the computers with true shared and distributed memory as well as the users demands and limitations (time of task solution or numbers of processors...
Tests are useful in the process of learning. These consist in an efficient way of verifying the knowledge gained during a period of time. Either they are multiple choice tests or exercise tests, they are a control check which show whether the notions were understood. This paper presents a modality of generating optimized sequences of tests described by certain keywords which follow certain restrictions...
SRAM based FPGAs that are based on a nanometer technology with denser integration schemes are used most widely now-a-days. When the radiation in the environment strikes any one of the configuration frames, it would seriously affect the functionality of the SRAM based FPGA which leads to Multiple Bit Upsets (MBUs). These MBUs affect a larger number of configuration frames in SRAM based FPGA. So in...
Suzaku is a pattern programming framework that enables programmers to create pattern-based parallel MPI programs without writing the MPI message-passing code implicit in the patterns. The purpose of this framework is to simplify message-passing programming and create better structured programs based upon established parallel design patterns. The focus for developing Suzaku is on teaching parallel...
Realization of logic and storage operations in memristive circuits have opened up a promising research direction of in-memory computing. Elementary digital circuits, e.g., Boolean arithmetic circuits, can be economically realized within memristive circuits with a limited performance overhead as compared to the standard computation paradigms. This paper takes a major step along this direction by proposing...
We demonstrate an early stage of our prototypical development of an earthquake early warning system based on Apple's MacBook computers. This system, called MacSeisApp, utilizes the Sudden Motion Sensors in MacBooks to detect seismic activities. It is inspired by an existing application called SeisMac, which turns a MacBook computer into a seismograph. MacSeisApp expands on SeisMac by using Apple's...
Computer science students use data array processing in many courses. To exploit the full power of caches and obtain higher performance, they mostly use the textbook example of sequential access of data arrays. However, a lot of discrepancies occur and the expected performance is not obtained in real life program executions, mostly due to the existence of several cache levels, with various architectures...
Compression via Substring Enumeration (CSE) is a lossless universal data compression scheme, introduced by Dube and Beaudoin [1]. CSE compresses a target binary string by enumerating substrings occurred in it, and encodes the numbers of occurrences effectively, by calculating its upper-bound and lower-bound based on the previous numbers. They used a data structure called Compacted Substring Tree (CST)...
While dealing with large data array required in various applications, the memory required for the data storage and data transfer of that bulk data becomes difficult. If the array size can be reduced without losing the data, the problem of storage and data transfer can be avoided. In this paper, a Huffman Coding based data compression algorithm is proposed and tested in MATLAB environment which will...
This paper presents a novel application of commodity Graphics Processing Units (GPU), the OpenMP CPU parallelization library, and the Qt4.8 framework for a real-time characterization and calibration utility created to meet the needs of the Imaging Spectroscopy community. Until now FPA calibration was performed offline in MATLAB or IDL due to the high throughput required to process incoming data —...
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