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A transient is defined as a process where a system transforms into an abnormal state from a normal state. In order to enhance safety and achieve greater economic benefits, it is very important to detect and identify transients in a timely manner during the operation of nuclear power plants. Thus, according to the ideas employed in image processing and photo retouching, we propose a novel method for...
To estimate heart rate (HR) during night remotely and unobtrusively, we use a far-infrared camera and an RGB-Infrared camera to develop a dual-mode imaging system. The RGB or infrared images are first registered by the far-infrared images through the affine transformation. A custom-made cascade face classifier, which contains the conventional Adaboost model and fully convolutional network, was applied...
The new accounting standards put forward higher request to the quality of accounting information, but do not change the traditional model of financial report and the disclosure of accounting information, which causes the accounting information provided by enterprise lags behind, users' cost of accounting information heightens, data input duplicates, and accuracy drops. And the implementation of new...
This paper presents a new database, Immersive Video Quality Assessment Database 2017 (IVQAD 2017), intended for immersive video quality assessment in virtual reality environment. Video quality assessment (VQA) plays an important role in video research fields. Nowadays virtual reality technology have been widely used and playing videos in virtual reality visual system is becoming more and more popular...
Signal differentiation is widely used in system monitoring and control. The key problem in differentiator design is how to obtain a satisfactory tradeoff between differentiation exactness and robustness to uncertainties and noises. Based upon proposing a novel finite-time stabilizer for 2-order integrator chain, a new finite-time-convergent 2-order differentiator with bounded estimation error of both...
The application of digital instrumentation and control systems in Nuclear Power Plants (NPPs) provides a series of advantages, but it also raises challenges in the reliability analysis of safety-critical systems in the NPPs. Software testing is one of the most significant processes to assure software reliability, and the safety-critical systems of NPPs are sensitive to the severity of software faults,...
A high-temperature gas-cooled reactor-pebble bed module (HTR-PM), as a demonstration nuclear power plant (NPP), is now under construction in the Shandong province of China. The reactor protection system (RPS) in an HTR-PM is a safety-related system and is mainly in charge of monitoring safety-related parameters according to the reactor protection requirements. Thus, an RPS is very important to operations...
In order to make full use of the parallelism of NoC and improve the parallel communication ability between resource nodes, a high performance dual-port network and relative routing algorithm are introduced in this paper. Meanwhile, the Torus structure is also used in the design to further improve the network performance, which provides better connectivity of network and smaller radius. This paper...
Spectrum peak search (SPS) is the final step of MUSIC algorithm, the amount of computations has increased a lot with the improvement of accuracy requirement and the expansion of search scope. In this paper, a novel circuit is designed to realize two-dimensional spectrum peak search, the search scope of azimuth and pitch are −180∼180 degree and 0∼90 degree. There is the logic circuit instead of memory...
In this paper, a coarse-grained reconfigurable computing unit (RCU) is designed for the heterogeneous multi-core system (HMCS) which is applied to high density computing field. As a data-driving computing unit, RCU can work in two modes: stream-mode and store-mode. In first, it achieves a higher efficiency, while in latter it attains a better flexibility. The architecture of RCU is optimized for some...
Three-dimensional (3D) imaging technology has been growingly prevalent in today's world. But objective quality assessment of 3D images is a challenging task. In this paper, we try to investigate and develop the 2D image quality metrics into stereoscopic image quality assessment using a dual-weight model within the concept of free energy principle and human visual system. On the basis of a psychological...
High Temperature Gas-Cooled Reactor-Pebble bed Module (HTR-PM) Nuclear Power Plant (NPP) is one of the most important projects in the National Science & Technology Major Project during the Eleventh Five-Year Plan period. HTR-PM digital Reactor Protection System (RPS) is one of the key research subjects in the HTR-PM NPP supported by the National S&T Major Project. The research on software...
Nyctalopia, millions of people all over the world suffering from which, brings much trouble to the patients. The available night vision systems are poor in user experience but cost much. In this paper we design and implement an Augmented-Reality night vision enhancement application for see-through glasses. According to our model proposed for the night blindness, fast and efficient algorithms are used...
Visual attention plays an important role in image and video processing. Nowadays, high definition (HD) techniques have been widely used. And ultra high definition (UHD) is becoming more and more popular. However, existing researches in visual attention mainly focus on relatively low resolution videos or images. There is very limited studies in visual attention of UHD videos. In this paper, we built...
Nuclear safety has received great concern since Fukushima Accident. As the employment of digital systems in newly-built and upgraded Nuclear Power Plants (NPPs), software reliability brings a lot of challenges to the Probability Risk Assessment of NPPs. Digital Reactor Protection System (RPS) plays an important role in nuclear safety: it monitors the state of the plant and generates an emergency scram...
Software Reliability Growth Models (SRGMs) are commonly used to estimate the software quality in software engineering. Currently, most SRGMs employ the fault number data collected during software fault detection process and model the fault number data with corresponding detection time. In this process, fault severity is generally used as an unknown parameter to be solved by the modeling process. Few...
We propose a PDM upstream PON scheme based on a pair of RSOAs at the ONU. We show by simulation that binary PDM SCFDE signals generated by RSOAs can be successfully demodulated at the OLT.
Using fiber-optic components, we demonstrate an optical frequency division scheme for a proposed erbium silicon photonics integrated oscillator. An 80-dB division ratio from 192 THz to 1 GHz is achieved without an f-2f interferometer and carrier-envelope-phase locking.
In an era of multi-core and even many-core processors, with the increase of the number of cores integrated on a single-chip, how to organize these cores efficiently is becoming the key issue to make multi-processor systems optimal. The infrastructure of cluster-based multi-processor system-on-chip (MPSoC) is promising, and welcomed because of its hierarchy and scalability. However, how to configure...
ZnO nanowires (NWs) lateral field emission devices were fabricated. The NW-clusters were controlled to locally grow on the edges of the electrodes with different spread-angles. Devices with NWs in 0°∼57° tilt-angles possess better field emission property. Typically, the device can operate at a bias of 477 V (anode-cathode gap: 50 μm) with emission current of 9.3 μA (current density: 6.22 A/cm2). Both...
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