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This paper puts forward the design of non-similar dual-redundant electromechanical actuation system for UAV landing gear, in which the main redundancy adopts multi-motor control center with digital signal processor (DSP) and field programmable gate array (FPGA) as its core algorithm, and the slave redundancy uses logic circuit to realize open-loop speed control. Due to the low real-time demanding...
A directory-based chip multiprocessor (CMP) suffers from excessive directory area overhead when its size grows. This work leverages novel relinquishment coherence and superior directory efficiency (RECODE) to lower area overhead. Relinquishment coherence boosts the utilization of a hash-based, set-associative table which holds distinct present-bit vectors (PVs), as it transforms a conflict PV to its...
In order to comprehensively evaluate and improve the performance of the Rogowski coil electronic current transformer (RCECT), this paper presents a method for steady state characteristic and the dynamic characteristic test. The testing scenario is configured in an electromagnetic transient simulation software (PSCAD), then the digital signals are reproduced as analog signals by amplifiers. The sensor...
Due to the increasing complexity and huge number of uncontrolled operational factors in manufacturing, the produced product usually comes with an exceptional high infant failure rate, and the root cause identification of product infant failure has been a very challenging issue for manufacturers. Especially in the era of big data, the large number of data could be collected from the product life cycle...
The requirement for real-time video transcoding systems has significantly increased due to the easy and widely available access to high resolution video streams and large-scale applications in recent years. In this paper, we propose a real-time distributed video transcoding system working on heterogeneous environment to tackle the high requirement of such applications. It allows multiple computers...
Time delay estimation is the basis of the localization algorithm for partial discharge (PD) based on time difference in GIS, and it is the key to the accuracy of localization. In this paper, the theory of fractional Hilbert transform for time delay estimation is described. Based on fractional Hilbert transform, a method for estimating the time delay of GIS ultra high frequency partial discharge is...
Shortage of qualified cybersecurity workforce is a national problem. Without an effective solution, people's daily lives, business operations, and even national security are in jeopardy. Higher education institutions have invested in various approaches to train college students to acquire cybersecurity related knowledge, skills, and abilities. The existing approaches still need improvement and refinement...
An improved cloud resource revenue optimization models are proposed, which include the benefits of service providers and users negotiate SLA agreement. And the models define the constraint mechanism for describing service quality problems such as service response time and customer satisfaction. We design the comprehensive response indicator and use this indicator to quantify the rationality of the...
Virtual agents are artificial intelligent artifacts that mimic natural conversations with users. The media equation posits that human-agent interaction mirrors the social cues prevalent in human-to-human relationship. As such, personality adaptation-convergence (similarity-attraction) and divergence (complementary-attraction) in human-agent interaction have been explored, particularly in the context...
Light-emitting diode (LED) is a promising semiconductor optoelectronic device, which has small size, long life, environmental protection and many other advantages. Due to its nanosecond time response of luminescence, LED can achieve high-speed modulation of information. Indoor LED lighting source is regarded as communication base station, through high frequency flashing of the lighting source to pass...
In order to improve the quality of graduate dissertation and examine the quality of graduate education, the mechanism of graduate dissertation random inspection evaluation in Shanghai has been operated for more than ten years. Evaluation experts evaluate the quality of dissertation by using subitem evaluation method rather than comprehensive evaluation method to reduce the risk of misjudgment. Decision...
Trust plays an important role in the fields of Distributed Artificial Intelligence (DAI) and Multi-agent Systems (MAS), which provides a more effective way to reduce complexity in condition of increasing social complexity. A number of computational issues about trust have been studied. However, the properties of trust and the transitivity closure of trust network are failed to be considered by researchers...
Expert evaluation is one of the important means of investment decision-making. We propose a group-decision method based on gray matter element, and apply it to network evaluation of university innovation project. This method extends traditional single evaluation method to abundant index system, and refines the scoring rubric. On the basis of support score, other six criterion opposed score, uncertainty...
File retrieval is a frequently adopted primitive operation for most computer users. As the dominant way for file retrieval, file navigation is yet quite inefficient. Lots Efforts have been made to either enhance the navigation interface or provide alternative. However, they all suffer from the challenge of switching users from their preferred interface to a totally unfamiliar new one. In this paper,...
Nowadays, more and more online examinations are holden in the distributed examination centers, which calls for the deployment of examination surveillance systems. Various related techniques have been proposed for this purpose, for example, video surveillance, face recognition based identification, and etc. However, there is still a lack of flexible and scalable solution to detect the misbehavior of...
It is well known that the eigen frequency (f) of a harmonic oscillator is determined by the oscillator effective mass (meff) and spring constant (keff) according to the Hook's law equation. An optical whispering gallery microcavity, when the wavelength of the injected light coincides the cavity resonance, establishes tremendous amount of light circulating along its equator. For an ultra-high quality...
In order to take full advantage of digital technology, further the aesthetic value of digital painting, the differences between digital painting and traditional painting are discussed in this paper. This thesis made the research from presentation, preservation, dissemination and other aspects, provided differentiated research method and contrastive analysis about digital aesthetic. The results showed...
Android has dominated the market of mobile devices. Meanwhile, it has become the main target for attackers. How to detect and analyze Android malicious applications (malapps) is an ongoing challenge. Current malapps have become increasingly sophisticated. In particular, zero-day (unknown) malapps appear very frequently and can evade most detection systems that are based on the signatures or patterns...
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...
At present, the edge-cutting of Wilton Carpet mainly rely on manual operation. Artificial cutting method has the disadvantages of low production efficiency, poor cutting quality, and is easy to be affected by human factors. The edge-cutting system with computer vision can overcome the disadvantages of manual cutting, but the existing systems have the disadvantages of high cost, low efficiency and...
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