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The cognitive radio network is intelligent in adapting to the dynamic network environment, and it also provides a new way to solve the application limitation of nowadays MAC protocols. In this paper, an adaptive MAC protocol selection scheme based on machine learning is proposed for cognitive radio networks. This scheme can combine the respective advantages of the competitive protocols and non-competitive...
We report on the demonstration of a highly efficient SESAM mode-locked Yb:KGW bulk laser that generated 400 fs pulses with an average output power of 12 W. The optical-to-optical efficiency and the slope efficiency were estimated to be 37% and 70%, respectively.
Wide-field second harmonic generation (SHG) microscopy was implemented using a high power Yb laser for applications in fast imaging of live samples and for histology slide scans in digital pathology. Live imaging of drosophila larvae muscle was demonstrated for more than 60 s continuous illumination using SHG contrast at a frame rate of 10 Hz, for applications in basic muscle research. Pathological...
The introduction of Massive Open Online Course (MOOC) has been an important development trend in higher education reform all over the world. Focusing the inadequate and missing experimental teaching procedure in current MOOC implementation especially for electronic and information engineering, a virtual simulation experimental teaching system is proposed. The proposed scheme transfers the traditional...
Numerical simulation of thermal convection in the Earth's outer core requires extreme-scale computing due to the large temporal and spatial disparity, extreme physical parameters, rapid rotation and spherical geometry. In this work, the numerical simulation of the thermal convection in the Earth's outer core for CPU-MIC heterogeneous many-core systems is studied. Firstly, starting from a legacy parallel...
Vehicular communication network is designed to support the communication between vehicles. However, due to the fasting moving vehicles, the effective communication between vehicles has been a challenge. A connectivity model of vehicular communication network based on headway was proposed to achieve the effective communication between vehicles in this paper. Based on the premise of analyzing the traffic...
Data offloading is a promising technique for mobile terminals (MTs) for conserving energy in wireless networks. This technique enables MTs to support heavy data traffic by offloading computation-intensive tasks to the cloud. However, due to the long transmission up-link, data offloading may lead to unnecessary energy usage. In this paper, we propose a joint collaborative data offloading framework...
The remaining life prediction of the satellite is of great significance in the operation of the satellite and the maintenance strategy of the constellation. The existing life prediction methods only consider the propellant consumption, thus a new dynamic life prediction method considering not only consumption but also random failure and degradation is proposed in this paper. Firstly, the failure characteristics...
For energy harvesting cognitive radio (EHCR), secondary user's (SU's) energy harvesting duration and spectrum sensing parameters jointly impact SU's capacity but have not been studied yet. In this paper, we investigate the joint impact. First, we obtain the closed-form expression of SU's capacity considering both limited energy supply and imperfect spectrum sensing. Then, we maximize SU's capacity...
The blind rendezvous, which requires neither Common Control Channel (CCC) nor the information of the target user's available channels, has recently attracted a lot of research interests. As a contribution to this research area, in this paper we propose a Sender-Jump Receiver-Wait blind rendezvous algorithm, which has fully satisfied the following requirements: 1) guaranteeing rendezvous; 2) realizing...
In order to improve the connectivity and survivability of Cognitive Radio Networks (CRNs) under complex and vicious communication environment, we propose a network architecture self-adaption technology. The technology enables CRN to switch between three kinds of architectures, i.e., centralized, single-hop ad hoc and cooperative relay in an autonomous and flexible way. This self-adaptive switching...
Clustering algorithms are often adopted in batch process monitoring, especially in multistage batch process monitoring. In process monitoring, the process data are sampled at a specified time interval and generated as time sequences. In this paper, we propose a novel order clustering based sub-stage division (OCSD) algorithm which utilizes the order information (time sequence information) of batch...
Fisher Linear Discriminant Analysis (LDA) has recently been successfully used as a data discriminantion technique. However, LDA-based face recognition algorithms suffer from a small sample size (S3) problem. It results in the singularity of the within-class scatter matrix Sw. To overcome this limitation, this paper has developed a novel subspace approach in determining...
Maintainability is an important factor to determine the maintenance quality for aircraft. Favorable maintainability design can make the maintenance more simple, speedy and economical. Maintainability design and validation need evaluation method and standard. This article takes control column and side stick with related standards as an example. Then establish evaluation method. At last, contrast and...
The continuously deepening of higher education reform and rapid development of information and communication technology (ICT) brings an urgent requirement for engineering education in China. Excellent Engineer Training Program (EETP) is an important engineering education plan to explore novel university-enterprise cooperation based cultivation method. This paper presents a comprehensive study on the...
With the increasing popularity of Google Maps, the integration of web services with Google Maps has recently attracted considerable attention. Using Google Maps JavaScript API v3, developers can build highly customizable maps with their own content and imagery. To enhance visit experiences on The University of Akron (UA) campus, we present RooWay -- a web-based application for UA campus in this paper...
There is an urgent demand in studying efficient methodologies to enable hybrid multi- and many-core accelerations in global climate simulations. The Model for Prediction Across Scales (MPAS) is a family of earth-system component models that receives increasingly more attention. Like many other models, MPAS, though features some emerging numerical algorithms, employs a pure MPI approach for parallel...
This paper proposes an approach to tailor the light flow by using the liquid diffusiongenerated gradient. A microfluidic network is designed to generate the required linear and parabolic profiles. Maxwell's fisheye lens and optical bend are realized on a single microfluidic chip.
The development of cloud computing, big data and ubiquitous communication technologies bring a golden opportunity to traditional taxi service systems. In this paper, we propose an intelligent taxi service system based on Carrier-Cloud-Client framework of Internet of Vehicle (IOV) for the first time. Basically, the system employs an advanced intelligent vehicle terminal, a powerful cloud platform and...
With the increasing availability of driving operation data and vehicle information for auto insurance services, it is possible for insurance companies to provide differentiate insurance premiums and value-added services for drivers. We develop a usage based insurance system for the first time, which is comprised of carrier, cloud and client referring to the internet of thing architecture. Our innovative...
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