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Ternary content-addressable memory (TCAM) is used in search engines for network and big-data processing [1]–[6]. Nonvolatile TCAM (nvTCAM) was developed to reduce cell area (A), search energy (ES), and standby power beyond what can be achieved using SRAM-based TCAM (sTCAM) [1]–[2]: particularly in applications with long idle times and frequent-search-few-write operations. nvTCAMs were previously designed...
This paper deal with the precision of underwater acoustic source localization using five-element plane cross array observation platform. The influence of three kinds of errors, namely the time delay estimation error, the array size installation error, and the sound velocity measurement error, on the localization precision, which includes direction and distance precision, are analyzed and simulated.
In the biomedicine domain, a large number of papers are published every day, which is crucial to search for the relevant answers for the user's query. However, documents are not exactly what the users want. Instead, snippets, small segments from the documents, are more proper to meet the requirement of the users. Hence, this paper proposes a biomedical snippet retrieval framework to exactly locate...
In this paper, we consider the problem of efficiently identifying the Pareto optimal designs out of a given set of alternatives, for the case where alternatives are evaluated on multiple stochastic criteria, and the performance of an alternative can only be estimated via sampling. We propose a simple myopic budget allocation algorithm based on the idea of small-sample procedures. Initial empirical...
This paper covers the theory, measurement and analysis of a constructed reference system to capture and acoustically reconstruct a spatial soundfield for device testing. Using a rigid sphere microphone array, a framework is presented for numeric and visual representation of the multidimensional system performance. This is used to compare the measured acoustic spatial recreation of a practical 30 channel...
Humanoid robot is anticipated to serve people in our daily life in the near future. However, the great cost of falling damage needs to be addressed before it is widely used. In this paper, a safe and compact joint with torque limiter is developed to reduce the damage to a humanoid robot during falling. First, the overall scheme design and working principles of the safe joint are investigated. Then,...
With the rapid advancement in mobile device technologies and connectivity, the use of mobile devices for visual object recognition is emerging as an application with great commercialization potentials. However, query images captured by mobile devices often suffer from various conditions such as illumination, scale, and viewpoint changes. To handle these, several detectors and descriptors have been...
In traditional model prediction based optimal voltage control method, the control horizon and prediction horizon parameters need to be determined offline using experience or enumeration, and keep constant during the whole optimization process, which may cause negative influence to the control performance. Aiming at this problem, an adaptive model prediction based optimal coordinated voltage control...
With huge penetration of distributed generators (DGs), distribution systems become more and more active and flexible. To accommodate DGs in a much more optimal way, cooperation between transmission networks and distribution networks, even distribution networks and distribution networks, should be further strengthened. A cooperative sequential reconfiguration method is proposed in this paper, which...
Due to the increasing capacity of grid-connected photovoltaic systems in distribution networks, its impact on the voltage security can't be ignored. In this paper, based on the voltage stability criterion of maximum transmission power, and considering induction motor voltage response characteristic, the impact of dynamic behaviors of grid-connected photovoltaic systems on transient voltage stability...
Along with the increasingly serious environmental issues, besides economic efficiency, much attention is paid to the environmental aspects in the daily dispatch of active distribution networks (ADN). This paper presents a comprehensive optimal model to minimize the economic cost and environmental cost. The damage cost from gas emissions and the uncertainty of renewable generations are taken into consideration...
This paper proposes wave-domain adaptive processing for noise cancellation within a large spatial region. We use fundamental solutions of the Helmholtz wave-equation as basis functions to express the noise field over a spatial region and show the wave-domain processing directly on the decomposition coefficients to control the entire region. A feedback control system is implemented, where only a single...
A loudspeaker array is a key component in active noise cancellation (ANC) systems. Most in-car ANC systems utilize the car's own integrated loudspeakers to cancel the noise due to engine and other sources. In this paper, we evaluate the integrated loudspeakers' noise cancelling capabilities by analyzing the in-car noise field and the loudspeaker responses. We show that the average noise power in a...
System reliability-based design optimization is closely linked with its economy. Under conditions that the life of components follows Weibull distribution and group strategy is applied to preventive maintenance, design cost function, manufacturing cost function and maintenance cost function are presented respectively for a multi-unit system which is composed of identical units. And then, a lifecycle...
The computational cost of large sparse unsymmetric linear equations has brought a challenge to engineering and scientific fields in recent years. In this paper, we present a parallel algorithm for solving large sparse unsymmetric linear equations. We multiply the unsymmetric linear coefficient matrix by its transpose to transform the large sparse unsymmetric matrix into a symmetric one, in this way...
A fourfold-azimuthal dependence of terahertz radiation from polished mono-crystalline (100) silicon is observed firstly. This phenomenon is explained by the electric quadrupole-magnetic dipole, which resemble second harmonic generation from (100) silicon.
A fuzzy controller is established for the wire feeder of the invasive vascular interventional surgery robot in this paper. First of all, the mechanism of the wire feeder is introduced, and the axial motion is analyzed. Second, the dynamic model of the wire feeder is established. Next, the fuzzy PID controller is established to improve the positional accuracy and dynamic performance. At last, the controller...
We report back gate field-effect transistors (FETs) with few-layered MoS2 nanosheet controlled by lead-zirconate-titanate (PZT) ferroelectric gating. The MoS2 transistors with PZT gating (MoS2-PZT FETs) exhibit reproducible hysteresis and nonvolatile memory behaviors with high stability, which can be attributed to the polarization screening from interface adsorbates and charge dynamic trapping/detrapping...
Electro-optic effects of PbZr0.52Ti0.48O3(PZT) and BaTiO3(BTO) ferroelectric thin films in the terahertz frequency range are studied with high-sensitive terahertz time-domain spectroscopy (THz-TDS). A linear response of PZT film with the linear electro-optic coefficient rc=6.73×10–11 m/V, and a quadratic response of BTO film with the second-order electro-optic coefficient Rc=1.42×10–17 m2/V2, are...
This paper proposes the theory and design of circular higher-order microphone arrays for 3D sound field analysis using spherical harmonics. Through employing the spherical harmonic translation theorem, the local spatial sound fields recorded by each higher-order microphone placed in the circular arrays are combined to form the sound field information of a large global spherical region. The proposed...
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