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High-level synthesis (HLS) tools have vastly increased the productivity of field-programmable gate array (FPGA) programmers with design automation and abstraction. However, the side effect is that many architectural details are hidden from the programmers. As a result, programmers who wish to improve the performance of their design often have difficulty identifying the performance bottleneck. It is...
A 25–28Gb/s full-rate reference-less CDR is presented and designed in a standard 0.13μm SiGe BiCMOS process, which can be applicable to nearly all classical 100G communication protocols by multi-channel configuration. It consists mainly of a full-rate phase frequency detector, a quadrature voltage control oscillator and two voltage to current convertors with loop filters. A dual-loop topology is adopted...
We consider dynamic scheduling for heterogeneous resources in flexible manufacturing systems. The resources are mobile robots with different capabilities and/or people with different skills. The tasks in the system arise over time and each has a time window for completion. We have developed a method for dynamic scheduling based on mixed integer programming and rolling horizon. The results show it...
We show that if the nearly-linear time solvers for Laplacian matrices and their generalizations can be extended to solve just slightly larger families of linear systems, then they can be used to quickly solve all systems of linear equations over the reals. This result can be viewed either positively or negatively: either we will develop nearly-linear time algorithms for solving all systems of linear...
With the Internet becoming the dominant channel for business and life, web proxies are also increasingly used for illegal purposes such as propagating malware, impersonate phishing pages to steal sensitive data or redirect victims to other malicious targets.,,,,In this paper, using thousands of web proxy URLs crawled, we performed a large-scale study on the DOM (Document Object Model) structure features...
As a new actuator driven by Ampere force, Electro Magnetic Force driving Actuator (EMFA) is applicable to medium-high-voltage system with powerful output force, long stoke, simple structure and high reliability. In the paper, a new type of EMFA for 126kV VCB with single break is proposed on the basis of the mature manufacturing technology of 126kV vacuum interrupter. The model of EMFA is established...
A key feature of Software Defined Network is the decoupling of control pane and data plane. Although delivering huge benefits, such a decoupling also brings a new risk: the data plane states (i.e., flow tables) may deviate from the control plane policies. Existing data plane testing tools like Monocle check the correctness of flow tables by injecting probes. However, they are limited in four aspects:...
In this paper, the maneuver flight control scheme is proposed for the hypersonic glide vehicle (HGV). The system uncertainty, unknown external disturbances and input saturation are explicitly considered in the controller design. Firstly, the maneuver control architecture of lateral turning for the HGV is developed, and then a robust attitude controller is constructed to execute the maneuver command...
Blockchain is a decentralized, trustless protocol that combines transparency, immutability, and consensus properties to enable secure, pseudo-anonymous transactions. Smart contracts are built atop a blockchain to support on-chain storage and enable Decentralized Apps (DApps) to interact with the blockchain programatically. Programmable blockchains have generated interest in the healthcare domain as...
In order to counteract hostile communication based on the advanced Orthogonal Frequency Division Multiplexing (OFDM) technology, an efficient and unrecognizable jamming technique by failing the OFDM cyclic prefix (CP) functionality is developed in the paper. CP is introduced into OFDM systems to prevent interference caused by the multipath fading, as long as it is no shorter than the channel delay...
The reactive model of Software Defined Networking (SDN) invokes controller to dynamically determine the behaviors of a new flow without any pre-knowledge in the data plane. However, the reactive events raised by such flexible model meanwhile consume lots of the bottleneck resources of the fast memory in switch and bandwidth between controller and switches. To address this problem, we propose SoftRing...
The enthalpy difference laboratory is an experimental device for measuring refrigerating and heating capacity of Air conditioner. However, the temperature system of enthalpy difference laboratory has the characteristics of nonlinearity, hysteretic nature and time variation. Therefore, it is difficult for general control method to meet the control requirements of enthalpy difference laboratory. In...
In this paper, the suboptimal control problem is addressed for a class of discrete time-varying systems subjected to the stochastic communication protocol (SCP). The measurements provided by the sensors are transmitted through the communication channel and then fed into the controller. The SCP is utilized to select the sensor getting access to the communication media. In presence of the nonlinearities,...
In this paper, the zirconia toughened alumina (ZTA) ceramics with different content of zirconia were fabricated. The dielectric relaxation properties were investigated by using thermally stimulated depolarization current (TSDC) method. The observed TSDC peaks were attributed to defect dipole polarization, and the related activation energies were evaluated by a fitting method. The influence of zirconia...
Additional loss is produced when the speed of the PMSM drive system is changed with the common id=0 control strategy. Hence, in this paper, a method based on the decoupling control strategy is proposed to reduce loss of permanent magnet synchronous machines (PMSMs) in dynamic state. The new decoupling control strategy could reduce the additional loss compared with the traditional method by holding...
Microfluidic chips are widely used in the field of biopharmaceuticals, chemical synthesis, separation, and purification. Different requirements are asserted by different applications on the bonding processes of the microfluidic chips. In this paper, the easy-disassembly leak-tight encapsulation of the PDMS microfluidic chip was studied. A bonding method based on selective oxygen plasma treatment of...
ID3 decision tree data mining is a popular and widely studied data analysis technique for a range of applications. In this paper, we focus on the privacy-preserving ID3 decision tree algorithm on horizontally partitioned datasets. In such a scenario, data owners wish to learn the decision tree result from a collective data set but disclose minimal information about their own sensitive data. In this...
The electronic properties of single/bi-layer SnSe are theoretically studied using first-principles approach based on density-functional theory (DFT). The band structure and lattice parameters are researched. In order to gain more desirable electronic property, the in-plane strain and external electric field are adopted to modulate their electronic properties. The simulation results demonstrate that...
This paper presents a multifunctional interface circuit for the battery-ultracapacitor hybrid energy storage system (HESS). Both the voltage equalization of the battery banks and energy exchanging between two kinds of energy source will be realized, by using the appropriate control strategy. Thus the reliable work and the health of the battery bank can be maintained, and the ultracapacitor (UC) can...
In this paper, a free-space optical (FSO) communication system with supercontinuum source generated by dispersion shift fiber (DSF) from pulsed light modulated by optical switches is designed and constructed. In addition, the experimental results of free-space optical communication between broadband and narrowband light source are compared. Verifying the feasibility of broad-spectrum FSO communication...
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