Due to the widespread availability of implicit feedback (e.g., clicks and purchases), some researchers have endeavored design recommender systems based on feedback. However, unlike explicit feedback, cannot directly reflect user preferences. Therefore, although more challenging, it is also practical use for systems. Traditional collaborative filtering methods such as matrix factorization, which regards preferences a linear combination item latent vectors, limited learning capacities suffer...

In this paper, a direct torque control (DTC) using vector evaluation factor table (VEF-Table) is proposed for voltage source inverter (VSI)-permanent magnet synchronous motor (PMSM) drive system. approach, the candidate vectors can expand from six active to <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$3\times N_{\text {d}}$</tex-math></inline-formula> with duty cycle, and change trends of flux generated...

With the rapid development of modern science and technology, artificial intelligence is applied to various fields film industry, which has a significant impact on production algorithm aesthetics. The change movie process mainly reflected in pre-planning, scene design, live shooting post editing. Artificial technology can not only optimize process, reduce costs improve quality, but also provide new creative tools for art workers promote industry intelligent transformation upgrading. This...

Our society is witnessing a rapid taxi electrification process. Compared to conventional gas taxis, key drawback of electric taxis their prolonged charging time, which potentially reduces drivers' daily operation time and income. In addition, insufficient stations, intensive peaks, heuristic-based station choice drivers also significantly decrease the efficiency networks. To improve (e.g., reduce queuing in stations) networks, this paper, we design fairness-aware Pareto efficient...

The yokeless and segmented armature axial flux machine is considered an excellent topology for electric vehicles application. However, its performance severely limited by the stator cooling system. heat pipe, as small size, lightweight, but highly efficient passive phase-change element, has been attracting more attention in thermal management methods of motors. Therefore, relationship between pipe with temperature measured detail through experimental test platform this paper. Further, a...

In order to reduce the current ripple and improve power density of system, multiple structure design is generally adopted by traditional bidirectional DC/DC converter. However, fixed multiplicity can’t make converter always output smallest under different duty ratios. Through this research, it found that related cycle parallel multiplicity, then a variable proposed. Firstly, relationship between deduced, basic topology determined; Secondly, average value model AC small signal system are...

The concept of a More Electric Aircraft (MEA) demands highly optimized airframe power system which is achieved by replacing pneumatic and hydraulic systems with energy efficient electrical systems. With increasing offtake requirements, the Engine (MEE) could play key role in future MEA, where more will be drawn from gas turbine shaft using conventional gear driven machine, known to present inefficiencies reliability issues. Embedding an machine directly at engine would help eliminate need...

Physical-Layer Cross-Technology Communication (PHY-CTC), which achieves direct communication among heterogeneous technologies, brings great opportunities to help diverse IoT devices achieve harmonious coexistence through explicit coordination. The core technique of PHY-CTC is signal emulation utilizes the one technology (e.g., WiFi) emulate another ZigBee). based approach, however, inevitably introduces errors further lead unreliable communication. In this paper, we aim recover intrinsic and...

Interlinking dc–dc converters are essential in urban-area dc distribution grids to interconnect the medium-voltage and low-voltage (LV) buses. The increasing installation of renewable energy sources at LV side will result backward power flow through these converters, which is usually less than forward power. This letter presents an asymmetrical-bidirectional input-series–output-parallel (AB-ISOP) converter with a partial-scale rating satisfy above realistic requirement. Single-active bridge...

A novel switching structure composed of 3 inductors and 6 diodes, which can realize the step-up function is proposed. The was added into 2 basic Boost converters, new types direct current–direct current converters were obtained: an asymmetric inductor-diode-capacitor converter a symmetric converter. depends mainly on charging discharging capacitors. Theoretical analysis showed that (A-LDC) (S-LDC) are characterized by high-voltage gain, low-switching stress, low-inductance ripple....

Cellular data usage consumption prediction is an important topic in cellular networks related researches. Accurately predicting future can benefit both the operators and users, which further enable a wide range of applications. Different from previous work focusing on statistical approaches, this paper, we propose scheme called CellPred to predict individual user perspective considering behavior patterns. Specifically, utilize explicit behavioral tags collected subscription function as...

In this paper, the dual-stator axial-field flux-switching permanent magnet (DSAFFSPM) motors with E- and U-core stator modular segments, as well different stator/rotor-pole combinations are compared. The operation performance of DSAFFSPM machines explored by using MMF-permeance model method. A more comprehensive theoretical analysis, no limited to numerical calculation, is presented. This reveals directly relations between design parameters machine. comparisons E-shaped U-shaped teeth given,...

Charging processes are the key to promoting electric taxis and improving their operational efficiency due frequent charging activities long time. Nevertheless, optimizing resource allocation in real time is extremely challenging because of uneven demand/supply distributions, heuristic-based behaviors drivers, city-scale fleets. The existing solutions have utilized real-time contextual information for recommendation, but they do not consider much-richer fleet information, leading suboptimal...

This article presents a novel memory motor drive with integrated winding concept for traction applications. The key feature of the proposed idea is to integrate excitation armature winding, and hence eliminating additional magnetization achieve online magnetization-state regulations. Hence, spatial confliction conventional motors can be solved. Upon implantation design, utilization, torque/power density fault tolerant capability are significantly improved. Based on field modulation theory,...

The rise concern about mobile communication performance has driven the growing demand for construction of network signal maps which are widely utilized in monitoring, spectrum management, and indoor/outdoor localization. Existing studies such as time-consuming labor-intensive site surveys difficult to maintain an update-to-date finegrained map within a large area. crowdsensing (MCS) paradigm is promising approach building because collecting large-scale MCS data low-cost with little...

A high efficiency boost DC-DC converter controlled by current-limited and minimum off-time pulse-frequency modulation (PFM) mode is analyzed in this paper. The operating discontinuous conduction (DCM) modeled the state-space average method, simulated Matlab. PFM has lower power consumption, higher efficiency, smaller output ripple, better regulation. designed using UMC 0.6 mum 30 V BCD process. Hspice simulation results show that, can operate with supply voltage from 2.7 to 5.5 V, up fixed...

This study presents the design and analysis of segmented rotor for an electrical machine embedded onto more electric aircraft gas turbine engine shaft. The high-speed operational environment imposes high stress levels due to centrifugal forces; thus, feasibility this topology such application is explored a suitable proposed overcome mechanical stresses. Finite element structural was performed compare behaviour different segment fixing structure design. Also, electromagnetic carried out on...

In recent years, shipboard dc power system gains more and attention of the researchers because its high efficiency, reduced emission, ease access clean energy, etc. However, due to complexity compared ac system, need effective tools complete analysis, design optimization tasks, while modeling simulation is basis these tools. Firstly, paper established mathematical model each module in ship then found a using models based on MATLAB/Simulink environment. Through simulation, it proved an tool...