Localization plays a pivotal role in wireless sensor networks. Many range-based localization algorithms have been proposed for 2-D networks or densely deployed 3-D However, sparse is still challenging problem, because the sparseness of network makes it difficult to obtain proper order nodes be sequentially localized. The patch-and-stitching strategy can conquer problem networks, but unknown how uniquely merge two patches when there are not enough common nodes. In this paper, we solve by...

ABSTRACT In situations where a wide range of flow scales are involved, the non‐linear scheme should be capable both shock capturing and low‐dissipation. Most existing Weighted Compact Non‐linear Schemes (WCNS) too dissipative incapable achieving fourth‐order for two smooth stencils located on same side discontinuity due to weight deviations defect weighting strategy. this paper, novel filtered embedded WCNS is introduced complex simulations involving small‐scale structures. To overcome above...

The development of highly active, environmentally friendly, and long-term stable oxygen evolving catalysts at low costs is critical for efficient scalable H2 production from water splitting. Here, we report a new facile one-step electrodeposition nanocrystalline spinel-type ZnxCo3–xO4 films an alkaline Zn2+–Co2+–tartrate solution. electrodeposited electrode could be directly used as the anode electrolysis without any post treatment. film shows overpotential ∼0.33 V 10 mA cm–2 (and ∼0.35 20...

Intelligent control of soft robots is challenging due to the nonlinear and difficult-to-model dynamics. One promising model-free approach for robot reinforcement learning (RL). However, RL methods tend be computationally expensive data-inefficient may not yield natural smooth locomotion patterns robots. In this work, we develop a bio-inspired design learning-based goal-tracking controller snake robot. The composed two modules: An module behaviors given unmodeled stochastic dynamics robot,...

Congenital hydrocephalus (CH) is a life-threatening medical condition in which excessive accumulation of CSF leads to ventricular expansion and increased intracranial pressure. Stenosis (blockage) the Sylvian aqueduct (Aq; narrow passageway that connects third fourth ventricles) common form CH humans, although genetic basis this unknown. Mouse models indicate Aq stenosis associated with abnormal development subcommmissural organ (SCO) small secretory located at dorsal midline caudal...

We present theoretical analysis and experimental verification of the signal to noise ratio (SNR) a common-path interferometer-based optical coherence tomography (OCT) system. Based on fully integrated all-fiber implementation time-domain OCT system, we derived SNR system including effect beat noise, which turns out be twice as large excess term. verified through series experiments, utilizing both controlled phantom biological samples such rat brain with tumor frog retina. The results showed...

Triangular Ag nanoplates with a thickness of 5 nm and tunable edge lengths were fabricated using seed-mediated protocol, featuring enhanced near-infrared absorption as the length increased. The photoacoustic (PA) efficiency these assessed. Nanoplates an 100 (r1) performed best among others in vitro assessment. In following vivo test, r1 also found to boost PA signal tumor vessels, while detailed imaging vasculature was obtained. safety assessment demonstrated that no apparent acute toxicity...

Gradient-based Bi-Level Optimization (BLO) methods have been widely applied to handle modern learning tasks. However, most existing strategies are theoretically designed based on restrictive assumptions (e.g., convexity of the lower-level sub-problem), and computationally not applicable for high-dimensional Moreover, there almost no gradient-based able solve BLO in those challenging scenarios, such as with functional constraints pessimistic BLO. In this work, by reformulating into...

This paper studies the problem of adaptive reliable H control for a class T-S fuzzy systems with actuator failures. In contrast to work found in literature, stochastic failures are considered, and functions used denote failure scaling factors. By combining an method switching-type mechanism, novel static output feedback scheme is developed, where parameters updated such that effects compensated effectively. Furthermore, <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This work was aimed to develop levodopa (L-dopa) nasal powder achieve controllable drug release and high deposition efficiency. A series of uniform microparticles, composed amorphous L-dopa excipients hydroxypropyl methyl cellulose (HPMC), polyvinylpyrrolidone (PVP), or hydroxypropyl-β-cyclodextrin (CD), were fabricated by a self-designed micro-fluidic spray dryer. The effects excipient type drug/excipient mass ratio on the particle size, morphology, density, crystal property, as well in...

An active handheld micromanipulator has been developed to cancel hand tremor during microsurgery. The is also applicable in optical coherence tomography improve the quality of scanning and minimize surgical risks scans. manipulator can maneuver tool tip with six degrees freedom within a cylindrical workspace 4 mm diameter high. imaging system equipped 25-gauge Fourier-domain common-path OCT probe. This paper introduces techniques involved presents stabilized images A-mode M-mode scans air...

Reseach on modular robot is a hotspot in the field. The design methods to are different traditional robot. By analyzing domestic and international reaserch, 7 kinds of modularizing 3 configuring have been summed up. A bottom-up approach about system presented achieve goal rapid response users.

The use of renewable alternative fuels in diesel engines has grown recently. In order to study the effects different swirl ratios (SRs) on performance a engine fueled with n-butanol–diesel blends, combustion process 186FA pure diesel, 20% n-butanol and 80% fuel by volume (BU20) 30% 70% (B30) at five was simulated using AVL Fire software. simulation model validated comparing calculation results experimental in-cylinder pressure, heat release rate, emissions soot nitrogen oxides (NOx). This...

Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text M. Qiao, Y. Sun, X. Liu, Yuan, and P. Wilford, "Snapshot Optical Coherence Tomography," in Digital Holography Three-Dimensional Imaging 2019, OSA Technical Digest (Optica Publishing Group, 2019), paper W4B.3. Export BibTex Endnote (RIS) HTML Plain alert Save article

The alternating magnetic field was discovered to be capable of inducing the fibrous aggregation nanoparticles. However, this anisotropic may unfavorable for practical applications. Here, we reported that adsorption BSA (bovine serum albumin) on surfaces nanoparticles can effectively make γ-Fe2O3 turn into a more isotropic in presence field. Also, heating curves with and without under different pH conditions were measured show influence colloidal states collective calorific behavior

The dynamic modeling of dual-arm robot is the key technology to study coordinated motion two arms. difficulty lies in establishing connection between arms same system. Aiming at problem coordination robot, general models manipulators based on Lagrangian equation established, and vector analytical method used solve angular velocity Jacobian matrix single arm. Then combining principle virtual displacement, relative matrix, dynamics model established. And relationship forces ends joint...

The upper limb rehabilitation robot of end-traction type, because complex working environment, it is very easy to collide with other objects and cause accidents. A loop-locked control algorithm for redundant proposed in this paper the based on transformation master-slave task. It achieves switch task obstacle avoidance desired trajectory tracking by monitoring minimum distance between mechanical arm obstacle, thus can solve conflict tracking. There error space unavoidably when we get each...