A surface plasmon resonance (SPR) sensor comprising photonic crystal fiber (PCF) is designed for magnetic field and temperature dual-parameter sensing. In order to make the SPR detection of effectively, two open ring channels proposed are coated with gold silver layers filled fluid (MF) Polydimethylsiloxane (PDMS), respectively. The analyzed by finite element method its mode characteristics, structure parameters sensing performance investigated. analysis reveals when a range 40-310 Oe 0-60...

The direct-drive selective compliance assembly robot arm (SCARA) is widely used in high-end manufacturing fields, as it omits the mechanical transmission structures and has advantages of high positioning accuracy fast movement speed. However, due to intensifying dynamic coupling problem SCARA, permanent magnet synchronous motors (PMSMs) located at joints will take on nonstationary loads, which causes excessive internal temperature reduces lifetime PMSMs. To address these issues, prediction...

Abstract Target-tracking applications are promising and possess great theoretical practical significance, though the research faces challenges. With development of multi-modal depth-sensing technology, a large number scholars have proposed various target-tracking methods based on heterogeneous sensing demonstrated results. This review provides an overview techniques involved in target tracking different layers network as well comprehensive analysis progress each layer. First, this introduces...

This paper presents a SPICE model for calculating the coupling voltages of rectangular microstrip antenna illuminated by plane waves. A receiving based on Thévenin's theorem is first established in which ideal voltage source calculated reciprocity theory and impedance cavity model. Then, using method vector fitting, obtained approximated rational functions, can be directly converted to RLC circuits. The proposed model, allows incorporation either time-varying or nonlinear loads, applied both...

In this letter, a microstrip-fed open-ended resonant antenna (RA) based on an extended composite right/left-handed (ECRLH) unit cell structure is presented for multiband operations. This includes asymmetric ECRLH as the main resonator and short microstrip line feeding line. designed RA, of overall size 56 × 64 1.575 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> , generates ten operating resonances covering several commercial...

In this paper, a new approach for designing planar high frequency selectivity filtering coupler based on circular patch resonator is proposed. order to explain the operating principle, resonant property of has been investigated firstly. Two resonators connected by two microstrip lines are used in design. A achieved adjusting feeder position and length width line connect resonators. Without additional circuits, desired 0° 180° phase differences realized inherent in-phase out-of-phase...

Dynamic responses of a composite marine propeller in spatially wake were investigated this paper. A hydroelastic model was developed to identify the response characteristics blades using finite element method (FEM) coupled with computational fluid dynamics (CFD) method. Rotational effects and added mass considered. matrix established solved by Newton-Raphson numerical procedure. The dynamic blade calculated compared those counterpart rigid blade. Effects various parameters, including layer...

In this study, SPICE models of a multi-antenna system for transmitting and receiving are proposed. The radiation fields at given direction can be predicted by the model when is excited set excitation sources. used to calculate coupling voltages on each antenna's load antenna illuminated plane waves. proposed modelling method three-step approach. first step, properties characterized minimal number linearly independent fields. Then, equivalent established based system. Finally, approximated...

This study presents a SPICE model of paraboloid antenna for receiving. The proposed is converted from receiving based on the Thévenin's theorem and reciprocity theory through rational approximation. gives coupling voltages load when illuminated by plane waves. can be used in both frequency‐domain time‐domain analyses, part system‐level electromagnetic compatibility simulation circuit solvers. has been verified several examples.

This Letter presents a new design of balanced-to-unbalanced (B2U) filtering magic-T based on circular patch resonator. Without additional circuit, the prescribed in-phase and out-of-phase specifications are achieved by elaborately studying exploring electric field distributions degenerate resonant modes in resonators. Meanwhile, desired responses attained virtue coupling extent between two designed resonators back-to-back form. In proposed design, pair TM11 at first make up passband. nice...

In hypertrophic scars, the differentiation and migration of fibroblasts are influenced by extracellular matrix microenvironment, which includes factors such as stiffness, restraint, tensile force. These mechanical stresses incite alterations in cell behavior, accompanied cytoskeletal protein reorganization. However, role nucleo-skeletal proteins this context remains underexplored. study, we use a polyacrylamide hydrogel (PAA) to simulate stress experienced cells scar tissue investigate...

Uncertainties of the order 8 % in accuracy lithography used to define co-planar waveguides on ferroelectric thin films lead a similar uncertainty value relative permittivity film extracted from measurements. When such are as tunable elements composite right/left handed leaky wave antenna, variations capacitance varactors can reduction radiation and total efficiency around 1 dB 5 due appearance bandgap frequency response.

In this paper, a novel coplanar waveguide (CPW)-fed and miniaturized slot antenna for triple-frequency operation is proposed investigated, which printed on small 20mm×20mm FR4 substrate with thickness of 1.0 mm relative permittivity 4.3. Through loading different slits, three perfect operating bands 2.4GHz-2.45GHz, 3.25GHz-4.15GHz 5.05GHz-6.25GHz are achieved respectively, when return loss less than-10dB. Experimental results show that the gives monopole-like radiation patterns good gains...

A SPICE model of an antenna for transmitting is proposed. This allows the calculation frequency-domain radiation fields a range frequencies in which valid, it also direct time-domain (TD) arbitrary TD excitation signal, spectrum should be within modeling range. The then verified by two examples, both them demonstrate its validity. can part complete system-level electromagnetic compatibility simulation.

Fish tracking is a key technology for achieving intelligent aquaculture. It enables real-time monitoring and recording of position, quantity, movement patterns. This facilitates comprehensive understanding their growth status behavioral characteristics aquaculture management. However, existing computer vision-based methods present limitations when applied to underwater fish tracking. These arise from factors such as inadequate low-quality public datasets, poor performance due the diverse...

Photocurrent of GaAs photocathode activated with Cs and O was tested by auto-activation monitor, the fitting curves photocurrent showed that after first activation declines exponentially, then linearly very small slope |<i>k</i>₁|; second rises a slope|<i>k</i>₂| which is bit larger than |<i>k</i>₁|.Based on mechanism difference between twice annealing photocathode, degeneration behavior analyzed three-dipoles model XPS test succedent thermal cleaning. It...

In this paper, SPICE models suitable to analyze the radiated immunity of shielded twisted-wire pairs (TWPs) are proposed. The equivalent circuits representation TWPs firstly derived from multiconductor transmission line (MTL) theory. Then, by method vector fitting (VF), approximated rational functions, which can be directly converted models. for transient analyses and allows incorporation any kind terminations (including non-linear or time-varying loads). Numerical results port voltages...

Abstract. Design a calibration target that can be scanned by 3D laser scanner while shot digital camera, achieving point cloud and photos of same target. A method to joint calibrate camera based on Direct Linear Transformation algorithm was proposed. This adds distortion model traditional DLT algorithm, after repeating iteration, it solve the inner external position element as well camera. It comes prove this is reliable.

Wide-band planar microstrip balun implemented with simplified composite right/left-handed (SCRLH) structure is presented in this letter. The proposed consists of a wide-band Wilkinson power divider and broadband 180° phase shifter based on SCRLH structure. new design was simulated validated by the measurement. In experimental results, within frequency range from 3.1 to 8.3 GHz (91.2%), measured return losses unbalanced balanced ports are greater than 10 dB, isolation below 15 dB. amplitude...

In order to evaluate the services occupying server resources, a comprehensive evaluation of Web system performance model frame has been built and researched in general. The GAHP MADM method are separately proposed health, which have their advantages as same dis on multi-attribute resource evaluation. To improve quality, we fuse result by fuzzy method. Resource can be finally sorted. Finally, A simulation shows feasible paper's idea.

Internet of things resource access and intelligent processing platform, can be applied to a variety application scenarios. For specific scenarios, it has unified modeling tool build the model. Heterogeneous devices are abstracted as resources platform. The sensor data extracted encapsulated, distributed through publish subscribe system for other modules. platform mainly consists six modules, namely tool, heterogeneous module, messaging distribution networks based on publish/subscribe system,...

Welding residual plastic strains and stresses of welded structures are complicated they will cause errors during the assembly structure reduce strength structure. Based on an elastic-plastic-model, a 3D finite element numerical simulation representative penetration with loop welding line is carried out in this paper. The method join for base plate multi-pass welding. transient temperature field real-time dynamic obtained due to different sequences In process analysis, heat source modeled as...