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High Efficiency Video Coding (HEVC), a modern video compression standard, exceeds the predecessor H.264 in efficiency by 50%, but with cost of increased complexity. It is one of main research topics for FPGA engineers working on image compression algorithms. On the other hand high-level synthesis tools after few years of lower interest from the industry and academic research, started to gain more...
Some modern high-level synthesis (HLS) tools [1] permit the synthesis of multi-threaded software into parallel hardware, where concurrent software threads are realized as concurrently operating hardware units. A common performance bottleneck in any parallel implementation (whether it be hardware or software) is memory bandwidth — parallel threads demand concurrent access to memory resulting in contention...
Clustering is a crucial tool for analyzing data in virtually every scientific and engineering discipline. The U.S. National Academy of Sciences (NAS) has recently announced "the seven giants of statistical data analysis" in which data clustering plays a central role [1]. This research also emphasizes that more scalable solutions are required to enable time and space clustering for the future...
ASKAP has recently started its Early Science program with 12 MkII PAF-equipped antennas and 36 beams simultaneously covering a 30 square degree field of view. The first observations have focused on mapping extragalactic neutral hydrogen in galaxy groups and clusters selected by the ‘WALLABY’ Survey Science Team. Significant efforts from engineers, software designers, and scientists are overcoming...
Non-volatile memory (NVM) has widely participated in the evolution of the next-generation memory architecture by way of being the substitution of the main memory. To cope with the problem of asymmetric read/write speeds of NVM, several excellent researches have been proposed to reduce the number of writes to the NVM-based main memory. Nevertheless, most of these existing approaches do not take the...
Existing registries organize functionally similar services into groups without considering past service-usage from the consumers' perspective, a.k.a. pragmatics. Pragmatics can help registries to calculate service similarity more effectively and improve organization schemes. However, pragmatics are not available beforehand and their highly accumulated number over time creates time and space efficiency...
A multi-channel CCD signal processing system is introduced in this paper. It is used to drive CCDs to operate, to receive output image signals from CCD, then to implement data processing and encoding, finally to send out the data to a receiving system. Three boards in traditional remote sensing camera electronic system are integrated into one board with the same function in this system. FPGA is used...
Knowledge graphs have been widely adopted, in large part owing to their schema-less nature. It enables knowledge graphs to grow seamlessly and allows for new relationships and entities as needed. Knowledge graph has become a powerful tool to represent knowledge in the form of a labelled directed graph and to give semantics to textual information. A knowledge graph is a graph constructed by representing...
The central notion of this paper is that of contracts for concurrency, allowing one to capture the expected atomicity of sequences of method or service calls in a concurrent program. The contracts may be either extracted automatically from the source code, or provided by developers of libraries or software modules to reflect their expected usage in a concurrent setting. We start by extending the so-far...
The Transmission Line Matrix (TLM) method, firstly developed by Johns and Beurle [1], is a numerical technique for solving electromagnetic scattering problems based on a discretization of Huygen's model of wave propagation. This method employs a Cartesian mesh of transmission lines to discretize the original problem's domain and simulates propagation of delta function electromagnetic impulses in space...
Testing a software product is very much necessary to provide the customers with a quality product. The basic practices of testing involved are repetitive, expensive and wasteful. Along these lines, testing requires time to be adequately used, control the threats that one comes across and to keep a track of the quality metrics One should have the ability to beneficially recognize test circumstances...
This paper presents method for acquisition and processing status data of mobile devices. In this research smartphone, tablet PC, VANET or MANET nodes are regarded as mobile devices. The proposed method utilizes gathering information about state of hardware modules and network around the mobile device. Then the acquired information is processed in order to determine the metrics of mobile device which...
Ensuring software security is essential for developing a reliable software. A software can suffer from security problems due to the weakness in code constructs during software development. Our goal is to relate software security with different code constructs so that developers can be aware very early of their coding weaknesses that might be related to a software vulnerability. In this study, we chose...
Nowadays a number of universities collect and store information about the publications of their faculties and students which is represented as a collective report. The filling of the report is actually a routine process comprising transposition of the submitted data in an aggregate table that meets the specified requirements. Like every routine work which is done manually this procedure and its result...
We report a semiquantitative readout technique using structured Quick Response (QR) codes partially patterned with colorimetric assay. This allows error-corrected readout at point-of-care (POC) the assay using mobile devices while transparently enabling remote tabulation of population-level statistics through analysis of web traffic.
NoSQL databases like Redis, Cassandra, and Mon-goDB are increasingly popular because they are flexible, lightweight, and easy to work with. Applications that use these databases will evolve over time, sometimes necessitating (or preferring) a change to the format or organization of the data. The problem we address in this paper is: How can we support the evolution of high-availability applications...
The reliability of software system is very important. Common cause failures(CCF) have an influence on assessing the reliability of software. This paper studies the influence of CCF on software system reliability, and gives the quantitative method of common cause failure. We present the method of software reliability assessment in the presence of CCF. A case study is given to verify the effectiveness...
SciDB is a scalable, computational database management system that uses an array model for data storage. The array data model of SciDB makes it ideally suited for storing and managing large amounts of imaging data. SciDB is designed to support advanced analytics in database, thus reducing the need for extracting data for analysis. It is designed to be massively parallel and can run on commodity hardware...
Lofstrand, or forearm, crutches are a common assistive mobility device for those with functional impairments. However, repeated loading of the wrist and palmar region and continual hyperextension of the wrist during Lofstrand crutch usage may cause wrist strain, pain, and secondary injuries such as carpal tunnel syndrome. In order to reduce risk of injury, a novel wrist orthosis was developed with...
An electromagnetic method is developed to locate the position of the steel rebar. An AC current of 4.2 KHz is applied to a circular coil with diameter of about 10 cm to produce the excitation magnetic field. Another coil wrapped around a 1 cm ferrite core is used to detect the induced magnetic field by steel rebar. From the signal amplitude after demodulation, the depth information of the steel rebar...
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