Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
We present a minimalists but effective neural network that computes dense facial correspondences in highly unconstrained RGB images. Our network learns a per-pixel flow and a matchability mask between 2D input photographs of a person and the projection of a textured 3D face model. To train such a network, we generate a massive dataset of synthetic faces with dense labels using renderings of a morphable...
Traction system is the “heart” unit of railway vehicles, its performance is crucial to the improvement of vehicle performances. With the rapid development of controller chips, the high performance control algorithms of induction motors have been applied into the traction systems. Model predictive control has some advantages, such as simple principle, easy modeling, handling nonlinear constraints,...
This paper proposes a single-stage high-power-factor asymmetrical half-bridge AC-DC converter for power factor correction. The proposed converter is developed by integrating an asymmetrical half-bridge DC-DC converter with a set of coupled inductors and a blocking diode to achieve the single-stage AC-DC conversion with the buck-boost type power factor correction. By using the coupled inductors, the...
In this paper, a method is proposed for detection and estimation of high-resistance connection (HRC) for permanent magnet synchronous machine (PMSM) derives. The method is based on the relationship between the zero sequence voltage components (ZSVC), the stator currents and the resistance deviation of each phase winding. In the proposed method, the HRC fault detection, fault severity estimation and...
In this paper, we analyze the refraction of magneto-inductive waves by surrounding metallic loops in underwater sensor networks. Previous work proposed positive and negative refraction of magneto-inductive waves. Here, we discuss properties of different structures of the placement of coils with the aid of the dispersion equation and compare the performance of lattice and honeycomb structures with...
Integrating the concept of Antipodal Vivaldi antenna (AVA) and planar disc-shaped dipole, a half space radiation UWB antenna is proposed in this letter. The antenna adopted approximately 1/4 of the disc-shaped dipole as its radiator, fed by the AVA's exponential slot structure. The proposed antenna has an ultra-wide bandwidth and nearly half space radiation pattern. This character makes it applicable...
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...
We present a novel method to realistically puppeteer and animate a face from a single RGB image using a source video sequence. We begin by fitting a multilinear PCA model to obtain the 3D geometry and a single texture of the target face. In order for the animation to be realistic, however, we need dynamic per-frame textures that capture subtle wrinkles and deformations corresponding to the animated...
A miniaturized antipodal Vivaldi antenna (AVA) with bandwidth of 1–5GHz is proposed in this letter. The miniaturization of this end-fire directional antenna was realized by employing elliptically shaped conductors with two pairs of elliptically opened slots on them and one pair of symmetrically loaded structures. Additional reflection structures was designed to ensure the antenna's directivity at...
The field strength correction mechanism of radiation fields of phased array antennas solving by the approximate superposition method is analyzed. When approximate superposition method is used to achieve radiation fields of phased array antennas accurately, the fields must be corrected according to the power. The field strength correction coefficients depend on the array elements numbers, interval...
We present a novel absorber based on a periodic array of parallel-plate waveguide. With the assistance of a layer of lumped circuit that consists resistors, capacitors on top the parallel-plate waveguide, the absorber designed working at microwave L, and S band performs high absorption in a broadband frequency range. The reflectivity of −10dB covers the frequencies 1.4–5.5 GHz with relative absorption...
This paper discusses the performance model for practical computational fluid dynamics (CFD) simulation. Based on the analysis of the conventional qualitative model and empirical knowledge in the simulation, a set of practical models for the linear solution in high-order finite element method (FEM) simulation are established: a linear function model for the storage consumption, and a power function...
High order discretization method is one of the most popular research topics on Computational Fluid Dynamics (CFD). However, the development of visualization tools suited for high order methods obtains not as much attention. Most of the software used to visualize numerical solutions do not support high order data format. To visualize the high order solution, the most common method is to tessellate...
With the trend of higher power density, miniaturization as well as higher operating temperature requirement, heat transfer problem has been one of the crucial issues. Microchannel heat sink shows a great potential regarding to the excellent heat dissipation capacity. This paper aims to design microchannel heat sink for high power modules cooling based on topology optimization method to obtain better...
High extinction ratio is needed in high precision Optical Time Domain Reflectometer (OTDR) to enlarge the dynamic range. By transmitting part of pulse signal modulated by a Mach-Zehnder (MZ) optical modulator back to the input of the modulator via a feedback circuit, the pulse signal can be multi-modulated by one MZ optical modulation. And this technique offers great enhancements in the performance...
To achieve the better combination of cost and communication capacity, this paper proposes a colourless ONU remodulation scheme based on R-QDSOA in WDM-PON. The R-QDSOA can provide a modulation bandwidth over 20GHz and achieve directly modulation of high-order signal. Here, two remodulation schemes (respectively NRZ/4QAM and 4QAM/NRZ) at different modulation rates are implemented, which offers good...
In the 21st century, integrated transport, service and mobility concepts for real-life situations enabled by automation system and smarter connectivity. These services and ideas can be blessed from cloud computing, and big data management techniques for the transport system. These methods could also include automation, security, and integration with other modes. Integrated transport system can offer...
Cloud bank concept inspired from real-time commercial bank principals are a new dynamic virtual infrastructure resource management model. There are risks in cloud banking as a commercial bank even though cloud bank deals with intangible property. Both Cloud Bank Resource Providers (CBRP) and Cloud Bank Resource Consumers (CBRC) are concerned about liquidity. CBRP desire liquidity because they want...
In this paper, a new method is used to study the static characteristics of sliding bearings. The solving method and the process are expounded. Firstly, the validity of the new method is illustrated in mathematical form. Then the correctness of the method is verified by comparing the results with literature. With the help of Ansys, this paper put forward a new way to use the Reynolds boundary condition,...
The turbine blade is the most important component in the heavy-duty gas turbine. The common fatigue failures of the blade include the thermal fatigue and mechanical fatigue. Firstly, the finite element simulation of the blade is carried out in the working condition including the centrifugal load, high frequency vibration load and thermal load. According to the simulation results of the combined load,...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.