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With the rapid rise of various e-commerce and social network platforms, users are generating large amounts of heterogeneous behavior data, such as purchasehistory, adding-to-favorite, adding-to-cart and click activities, and this kind of user behavior data is usually binary, only reflecting a user's action or inaction (i.e., implicit feedback data). Tensor factorization is a promising means of modeling...
Localization has always been a topic of concern in transportation and construction management. Radio frequency identification (RFID) has promising potentials due to their practically unlimited identification capacity, lower power and light weight. The objective of this research is to develop localization algorithms using RFID technology and analyse which is possible algorithm indoor environment. To...
Due to the sparse distribution of road video surveillance cameras, precise trajectory tracking for hit-and-run vehicles remains a challenging task. Previous research on vehicle trajectory recovery mostly focuses on recovering trajectory with low-sampling-rate GPS coordinates by retrieving road traffic flow patterns from collected GPS information. However, to the best of our knowledge, none of them...
This paper discusses the effect of ionizing radiation on several commercial transceivers. The changing of current and receiver sensitivity of optical transceivers are discussed and analyzed. Based on the results, the commercial components need to reinforce in order to be suitable for space application.
We present an approach for generation, amplification, and compression of 4–12 μm pulses by tailoring the phase matching of ZGP in broadband-pumped dual-chirped optical parametric amplification and by indirect pulse shaping.
Off-highway dump truck contains amounts of potential energy and kinetic energy. During the braking process, these two parts are consumed in the form of heat on the braking resistance, and the energy consumption will be about 24 percent of total energy consumption of the Truck. Hence, it is necessary to recover the braking energy. This paper, aiming at the characteristics of electric drive system in...
The ever-increasing complexity in power systems requires novel optimization and control tools. These tools must be validated prior to application to real power systems. Such validation requires access to a realistic, high fidelity power system network model. Fuel cost is an important element for such a model, but is often difficult to obtain due to confidentiality constraints. This paper advances...
Principal component analysis (PCA) is widely used for fault detection for chemical processes; however, the efficient principal component (PC) selection remains an challenge. The effect of PC selection on PCA-based fault detection performance is analyzed within the statistical framework of hypothesis testing. A performance-driven fault-relevant PC (FRPC) subspace construction integrated with Bayesian...
In order to study the influence on the statistical distribution characteristic of dynamic radar cross section (RCS) from aircraft flight speed, firstly through analyzing aircraft aerodynamic, setting track model, calculating attitude angle and electromagnetic simulation, the three groups of dynamic RCS sequence were obtained under different flight speed. And the fitting curves of dynamic RCS sequence...
Switched reluctance motor (SRM) has great application potential in in-wheel motor electric vehicle (IWM-EV) due to its advantages, such as a high starting torque for initial acceleration, a wide operating speed range and high efficiency to extend the battery service life. However, the new structure of IWM-EV, e.g. SRM vertical force, airgap deformation has negative effect on vehicle safety and comfort...
The in-wheel motor electric vehicle (IWM-EV) is an overwhelming tendency in modern automobile due to its unmatched advantages. However, the new structure of IWM-EV which packets driving motor in wheel will induce the new problems, e.g. motor unbalanced radial force and airgap deformation of driving motor, etc. For the IWM-EV performance, these new problem is one of the major concerns. Taken switched...
An integrated vehicle control system to improve vehicle handling and stability is developed based on the control authority of chassis key electronic control subsystems. First, a quantitative analysis of the control authority and the effective working region of the active front steering (AFS), active braking (AB) and active suspension (AS) subsystems is investigated based upon a full vehicle model...
Real-time systems are shifting from single-core to multi-core processors. Software must be parallelized to fully utilize the computation power of multi-core architecture. OpenMP is a popular parallel programming framework in general and high-performance computing, and recently has drawn a lot of interests in embedded and real-time computing. Much recent work has been done on real-time scheduling of...
System resilience has become a new perspective of safety engineering in recent years. It focuses on full-time response to adverse events. The different resilience system strategies are studied to enhance the system's ability to tolerate negative events. Organizational resilience applies resilience methods to the organizational structure, function and interactive behavior of the social-technology system...
A multi-ship collision avoidance decision support and path following control formulation is studied in a distributed way. This paper proposes a complete set of solutions for multi-ship collision avoidance in intelligent navigation, by using a top-to-bottom organization to structure the system. The system is designed with two layers: the decision-making layer for path planning and the control layer...
This paper manages to propose a risk assessment framework for fire accidents in the ship engine room. As it is well accepted that the risk assessment includes both probability and consequence, the kernel of the proposed framework is first to utilize the Bayesian network to obtain the failure probability, to introduce the Fire Dynamic Simulator to simulate the fire accident development and to derive...
In wireless sensor networks, Information-Centric Networks (ICN) are used as the next generation network architecture to perform non-TCP/IP communications. Meanwhile, Disruption/Delay Tolerant Networks (DTN) architecture has solved the problem of unable to communicate caused by frequent interruptions, node mobility or lacking of energy by storing the requested data in nodes' memory. However, the users...
Ships navigating in the traffic separation scheme pose serious risk owing to the distinguishing characteristics of narrow channels, such as limited depth, dense traffic, and disturbance of crossing ships. This paper models the collision risk in the Yangtze River by considering both the causation factors and the emergency management of maritime accidents using historical data. First, more than one...
With the rapid development of portable electronics, such as e-paper and other flexible devices, power sources with a high flexibility become an important prerequisite. In this run, supercapacitors with a small form factor are recently emerging as a competitive candidate. Here, we introduce an all-printed paper based supercapacitor (PPS) assembled by screen printing and stencil printing technology,...
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