Gesture recognition is an emerging technology of human–computer interaction. Compared to the conventional technologies such as wearable devices, cameras, and radars, ultrasound-based gesture has advantages low cost, power consumption, appropriates fog or dark environment. In this study, we propose a trajectory device via ultrasonic signal, which successfully applied in classification for gestures 3-D space. First, sensing hardware software configurations transmitting receiving signals are...

Abstract Flexible pressure sensors have been extensively explored for their widespread applications in wearable electronic devices such as medical diagnosis and motion monitoring. In this paper, a facile method is adopted to prepare the ordered hierarchical structure array then it applied improve performance of capacitive flexible sensors. The results indicate that sensor based on with high sensitivity (0.382 kPa ‐1 ), fast response recovery time (26 25 ms), its minimum detection can reach 4...

Abstract Background Umbelliprenin is a sesquiterpene coumarin isolated from Artemisia absinthium L. and shows antitumor effects in various cancers by inducing apoptosis. However, the effect of umbelliprenin human pancreatic cancer has not been clarified. Methods The were determined MTT AnnexinV/PI double staining assay vitro xenograft mice vivo. Autophagy was via immunofluorescence analysis. Apoptotic or autophagic related proteins measured immunoblotting. cell stemness mammosphere formation...

In order to study the rheological characteristics of magnetorheological fluids, a novel approach based on two‐component Lattice Boltzmann method with double meshes was proposed, and micro‐scale structures fluids in different strength magnetic fields were simulated. The framework composed three steps for simulation addressed, elaborated. Moreover, various internal external forces acting particles analyzed calculated. model set up, flowchart designed. Finally, physics experiment carried out,...

In this paper, a new method for the design of optimal finite-impulse response frequency-response masking (FRM) filters with reduced passband group delays is proposed. To meet prescribed magnitude and delay, proposed takes into account both error delay error. The key step derivation its gradient respect to filter coefficients, based on which an explicit constraint formulated. By incorporating overall optimization, FRM better approximation can be obtained in comparison by Lu Hinamoto 2003, as...

In phase measuring deflectometry (PMD), a camera observes sinusoidal fringe pattern via the surface of specular object under test. Any slope variations lead to distortions observed pattern. Without height-angle ambiguity, carrier removal process is adopted evaluate variation from distribution when quasi-plane measured. However, in usual measurement system, will be nonlinear due restrictions system geometries. this paper, based on analytical description PMD, method proposed remove phase. Both...

In phase measuring deflectometry (PMD), the fringe pattern deformed according to slope deviation of a specular surface is digitized employing phase-shift technique. Without height-angle ambiguity, carrier-removal process adopted evaluate variation from distribution when quasi-plane measured. However, difficulty lies in fact that nonlinearity generally contained carrier frequency due restrictions system geometries. This paper investigates nonlinear components introduced by generalized imaging...

Extensive coarse-grained simulations were performed to investigate the interactions of fullerene cluster with DMPC (dimyristoyl phosphatidyl choline) lipid membranes. The self-organised structures pristine molecules in aqueous solutions are comparable that full-atomistic simulations. We find interaction between and membranes depends on initial aggregation state molecules. insertion aggregates small size induced an increase bilayer thickness membrane area. They disaggregate after entering...

This correspondence presents a new method for the weighted least-squares (WLS) design of complex coefficient finite-impulse response (FIR) digital filters with arbitrary frequency responses by imposing an explicit group delay constraint. The nonlinearity respect to filter coefficients is circumvented linearization so that constraint can be successfully incorporated into second-order cone programming (SOCP) framework. effectiveness proposed illustrated two nontrivial examples and compared...

According to the magnetic interaction energy of particles magnetorheological fluids, physics model was established. The mode a certain number evenly distributed simulated by using Monte Carlo method. location changes were emphatically researched in field. simulation results show that chain or column structure formed along direction line external with experimental are consistent, thus effectiveness proposed method preliminarily proved.