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We present a wide-field, high-throughput optical technique for locating solid-state quanutm emitters with <10 nm accuracy, and apply it in the creation of micropillar sources with near-optimal single-photon emission.
Predicting the number of defects in software modules can be more helpful in the case of limited testing resources. The highly imbalanced distribution of the target variable values (i.e., the number of defects) degrades the performance of models for predicting the number of defects. As the first effort of an in-depth study, this paper explores the potential of using resampling techniques and ensemble...
When pulse radar signal is applied in a range limited anechoic chamber for target probing, the transmitted and reflected signal are coupled at the receiver. Interrupted transmitting and receiving (ITR) method can be used to solve this problem. However, the ideal rectangle ITR control signal is difficult to be generated by radio frequency simulation (RFS) system and the period of ITR is unstable in...
Many researchers analyzed the culture dissemination from observing and they did not give a mathematical model to quantitatively analyze the problem. In order to overcome the problem we would apply the theory of epidemic dynamics for safety cultures dissemination. In the paper, an ICB (the people in an organization divided into three groups: incomprehension, comprehension and oblivion) mathematic model...
Issues about mechanical system failures have been widely studied. However, few researchers analyzed attribute relationships among system components from a macroscopic perspective by quantitative analysis. This paper addresses theories of the conversion relationship of components in a mechanical system. We introduce a new method in system failure's propagation mechanism, where the mechanical system...
In this paper we propose a new salient object detection method via structured label prediction. By learning appearance features in rectangular regions, our structural region representation encodes the local saliency distribution with a matrix of binary labels. We show that the linear combination of structured labels can well model the saliency distribution in local regions. Representing region saliency...
Vulse radar signal is widely used in radar countermeasure and detection. When pulse radar signal is adopted in radio frequency simulation (RFS) for radar countermeasure, the target echo will return before the pulse signal is totally transmitted because the size of anechoic chamber is small. The reflected signal and transmitted signal will be coupling and the radar countermeasure cannot be implemented...
To extract the micro-motion parameters of the rotating targets, SFS (Stepped Frequency Signal) is usually adopted to obtain the HRRP (High Resolution Range Profile). To reduce the sub-frequency counts SFS needs to synthesize the wideband, RSFS (Random Stepped Frequency Signal) is raised. By randomly transmitting the sub-frequencies of SFS, the frequency counts are obviously reduced. Then HRRP reconstruction...
The equivalent circuits modeling method is developed for the EMP(Electromagnetic pulse) generators of the equipment-level immunity test. On the double-exponential function of EMP waveform, the corresponding circuit structure is introduced, and the calculation method is given to obtain the circuit RLC parameters. For the generators of EFT(Electrical Fast Transient/Burst), surge combination wave, and...
This paper presents an open-loop 28GHz 16-phase clock generator in 28nm CMOS technology. The open loop architecture is composed of 22.5° delay units and uses phase compensation to account for delay time variations. The 16-phase 28GHz clock generator consumes 14mW, leading to a power efficiency of 0.032mW/GHz/phase. The maximum phase error is 6° and the RMS phase error is 3° when the input frequency...
For a wideband radar system adopting stepped frequency signal (SFS), the micro-motion parameter is usually obtained by time-frequency analysis of the echo HRRPs (high resolution profiles). The data to be collected mainly includes each sub-frequency echo in the slow-time domain, which brings a great burden to the signal generation equipment and data storage on the radar system. Because of the sparseness...
Image retargeting techniques that adjust images into different sizes have attracted much attention recently. Objective quality assessment (OQA) of image retargeting results is often desired to automatically select the best results. Existing OQA methods output an absolute score for each retargeted image and use these scores to compare different results. Observing that it is challenging even for human...
In this paper, the impact of initial states on the stability in cellular neural networks (CNNs) with time delay is studied in this paper. The relationships among the parameters of CNNs are investigated and defined. Based on the relationships, the ranges of the equilibrium points of every cell in CNNs with time-delay are considered. To ensure that n-cell cellular neural networks are locally stable,...
A user-centric no-cell (UCNC) framework has been proposed which enables different level coordination over a large number of TRPs. This paper presents some key technologies in UCNC framework with the focus on PoC of UL grant- free transmissions in UCNC architecture. Massive connectivity support is one of the three important scenarios in 5G networks. The challenges to support massive connectivity lie...
Massive parallel business workflows running in the cloud are prone to temporal violations (namely intermediate runtime delays) due to various reasons such as service performance fluctuation and resource conflicts. To deliver satisfactory on-time completion, cloud workflow temporal verification is employed to accurately detect time delays of workflow activities and timely handle temporal violations...
Multiple-input multiple-output (MIMO) radars with wideband signals are useful to discriminate target in clutter. With wideband MIMO radar, the problem of extended target detection in compound-Gaussian clutter is considered in this paper. By obtaining target echoes from each antenna, the detector based on generalized likelihood ratio test (GLRT) is developed. It shows that the shape parameter of clutter,...
Private label has become an important strategy for retailers and B2C platform to gain competitive advantages. This paper investigates product introduction and position of B2C platform's private label in a distribution channel composed of one manufacturer and one B2C platform. Results indicate that introducing private label can create a win-win situation for both the B2C platform firm and the national...
This paper presents a robotic system — RoboFDM that targets at printing 3D models without support-structures, which is considered as the major restriction to the flexibility of 3D printing. The hardware of RoboFDM consists of a robotic arm providing 6-DOF motion to the platform of material accumulation and an extruder forming molten filaments of polylactic acid (PLA). The fabrication of 3D models...
Existing real-time data processing will come to a performance limitation with the rapid development of power grid. This paper proposes a method of distributed storing and processing for real-time data in smart grid dispatching and control systems. The method applies the multi-machine-multi-thread and parallel computing technology to improve data processing efficiency. Real-time data is partitioned...
State Grid of China plans to put a ± 500kV/3000MW four-terminal voltage source converter based high voltage direct current (VSC-HVDC) transmission system into operation by 2020. In compare to existing VSC-HVDC transmission systems, this system has higher voltage level and transmission capacity. Accordingly, grid devices and topology would be significantly different. This paper introduces configuration...
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