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It is imperative to efficiently track and catalogue the extensive dense group of space objects for space surveillance. As the main instrument for Low Earth Orbit space surveillance, ground-based radar systems are usually limited by their resolving power while tracking small, but very dense clusters of space debris. Thus, the information obtained regarding target detection and observation will be seriously...
The embedded fully self-biased switched-capacitor (FSBSC) with single-inductor high voltage bipolar-output (SIHBO) converter is proposed to achieve the energy and area-efficient driving scheme for the paper-like cholesteric liquid crystal display (Ch-LCD), which becomes the next generation of electronic readers in the consumer markets. As the compact power management module, SIHBO converter can provide...
The emergence of various and disparate social media platforms has opened opportunities for the research on cross-platform media analysis. This provides huge potentials to solve many challenging problems which cannot be well explored in one single platform. In this paper, we investigate into cross-platform social relation and behavior information to address the cold-start friend recommendation problem...
Here presented is an integrated drug testing system based on a mimetic lung tissue pattern of in vitro targeted therapy testing. The integrated targeted therapy testing system consists of continuous concentration gradient platform and dielectrophoretic (DEP) cell patterning chambers. DEP forces are based on polarity difference to manipulate heterogeneous cells for mimicking the inherent lung morphology...
In this article we provide a cognitive system that combines the traditional spectrum sensing process and the data mining process together. The data mining process aims to enhance the spectrum utilization using data mining. It includes three aspects: spectrum data pre-processing, spectrum data mining and results validation. The experimental results demonstrate the feasibility of such cognitive model.
Orthogonal frequency division multiplexing (OFDM) system performance degrades due to symbol misalignment. We propose a symbol synchronization scheme based on channel estimation (CE). We applied linear interpolation in time domain and Winner filter in frequency domain to implement CE. The first path time delay of channel determines symbol timing offset. We perform inverse fast Fourier transform (IFFT)...
Low-density parity-check (LDPC) codes are widely applied in modern communication system for its capability of approaching channel capacity at low complexity. We design an efficient encoding scheme based on LU decomposition for China mobile multimedia broadcasting (CMMB). We search for element with lightest row-multiplying-column weight from the k th row and k th column, and exchange it with diagonal...
We obtained an ultraviolet frequency comb of 1.58 W in average power by frequency quadrupling a high-power large-mode-area fiber chirped-pulse amplifier at 1032 nm, whose carrier envelop ephase was stabilized down to a linewidth of 2.42 m Hz via feedback control on the Ti:S seed oscillator.
This paper introduces a motion control systems of placement machine based on DSP microprocessor, which takes full advantage of controller peripherals connected imports rich and fast operation, and takes the PID speed feed forward algorithm, has good static and dynamic characteristics.
To meet the increasing requirements on both high-performance and high-flexibility for modern communication applications, this paper presents a novel Application Specific Reconfigurable Architecture called ASRA that tightly integrates a custom reconfigurable core with a very-long instruction word (VLIW) basic core. ASRA uses clustered register files and the two parts can work in parallel. The reconfigurable...
The study attempts to apply the consolidations between the ANP and GRA to systematically and hierarchically evaluate the research issue: “Constructing evaluation-model on the corporate green-marketing through the integrative perspectives” in order distinctively to versify the three potential candidates. In successively, the measured weighted scale of 0.3736 is located at “The g-marketing does positively...
Both capital structure and its antecedent variables are unobservable constructs measured by a set of observable indicators or proxies. Traditionally, the ordinary square (OLS) method was often used for the research on capital structure. However, the use of the ordinary squares method faces some problem. For overcoming these problems mentioned above, we use Grey relational analysis and path analysis...
With the on-chip resources largely increased, modern architectures are much different from traditional ones. The relation between temporal computing and spatial computing is getting more and more intricate. In this paper, we first analyzed and compared the abstract computing models of modern architectures. Then, a runtime reconfigurable architecture called programmable dataflow computing architecture...
This paper presents an L-band patch antenna with linear polarization for mobile device application. This patch antenna is constructed with two-sided structure and fabricated on FR4 printed circuit board (PCB). It is fed by 50-Ω subminiature version A (SMA) connector with the patch size of 2.38 × 3.57 cm2. Experiment results demonstrate that the patch antenna has a suitable operating frequency around...
Due to the time-varying of mobile communication channel, the accuracy of the frequency synchronization is very important because of multipath and large frequency offset. In this paper, the proposed method improves on the basic of S&C. The timing offset and a small multiple of the frequency is similar to the S&C. During integer frequency offset estimation, the local sequence of integer frequency...
According to the characteristics of phased array radar signal processing, a novel time pointer-based fast radar pulse interleaving algorithm is proposed. Firstly, a reasonable beam dwell scheduling model is built and scheduling constraints is analyzed. Secondly, based on the time pointer, several pulse interleaving ways are analyzed from the aspect of beam and pulse, an expression of timing constraint...
Image interpolation is an important basic digital image processing technology. In order to make image identify more easily, this paper did further research and improvement of the interpolation algorithm based on edge detection and interpolation algorithm based on threshold control.
In this paper, we propose a Modified Active Set Algorithm (MASA) in optimal wire sizing problem for VLSI interconnect timing minimization. Based on the Elmore delay model, the optimal wire sizing can be formulated as a convex quadratic program, which is known to be solvable in polynomial time and derive an optimal solution. The algorithm is very efficient for arbitrary interconnect structures under...
A novel simulation framework based on Service-Oriented Architecture(SOA) is proposed to meet the new requirements for simulation compos ability, this framework is open and is propitious to integration with other systems. A simulation platform is constructed using component-based software engineering to test the feasibility of SOA-based framework, the implementation of simulation service layer and...
Debt financing is one of the main ways of external financing, and it has always been the research focus of the academic circles. However, as a new branch of the capital structure research in recent years, the relationship between debt financing structure and solvency has not drawn enough attention. Based on relevant research literatures, this paper studies the impacts of debt financing structure on...
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