The common approach to diffuse optical tomography is solve a nonlinear and ill-posed inverse problem using linearized iteration process that involves repeated use of the forward solvers on an appropriately discretized domain interest. This scheme normally brings severe computation storage burdens its applications large-sized tissues, such as breast tumor diagnosis brain functional imaging, prevents from matrix-fashioned linear inversions for improved image quality. To cope with difficulties,...

Abstract Microporous covalent triazine-based frameworks (CTFs) have been widely used as adsorbents, separation and catalysts in the past few years, but confined microporous network often induces diffusion limitations of molecules to from active sites. Here, we present a general bottom-up synthetic strategy produce hierarchical porous polymer nanoparticles by cyclotrimerization 1,4-dicyanobenzene molten ZnCl 2 . Controlling ratio monomer salts is key prepare ionothermal methods, uniform with...

An outdoor wheeled mobile robot with foldable wheels and a self-adapting suspension structure are described. The traffic ability obstacle surmounting performance analysed based on terramechanics model. relationship between the radius of wheel unfolding angle is obtained. influence slip drawbar pull driving efficiency at different angles calculated, so stability do. At last an experiment will be carried out. experimental results indicate that has better performance. This make adapt to rough...

Because of the particular characteristics channel in underwater acoustic networks (UWANs), such as long propagation delay, low available bandwidth and severe multi-path designing a media access control (MAC) protocol for UWANs is different from that wireless sensor (WSNs). In paper, cross-layer contention-based MAC (CLC-MAC) proposed. CLC-MAC protocol, nodes calculate record delay with their neighboring nodes. When node wants to transmit DATA packets, it transmits RTS wait CTS packets other...

This study aimed to examine the impact of accelerated rehabilitation surgical nursing combined with enteral nutrition on postoperative recovery patients undergoing total hip arthroplasty. We enrolled 100 admitted Ankang People’s Hospital between January 2021 and December 2022. The were randomly divided into a control group treatment group. Patients in received routine targeted dietary guidance, while those nutrition. exhibited lower intraoperative blood loss, time getting out bed, hospital...

Locating cranes is critical toward safely lifting in construction industry. In this paper, based on overlapping work envelopes, we present optimized solutions for collision-free locating of mobile cranes. Our solution first determines the feasible location areas cranes, which are discretized with regular grids. We then incorporate a collision detection method, through locations potential eliminated. With objective minimizing weight sum about safety, smart search further performed to identify...

In order to solve the problems of image blur, uneven illumination and object occlusion in visual monitoring, a human fall detection algorithm based on visible light camera thermal imager is proposed this paper. Firstly, images are denoised reduce interference noise. Secondly, skeleton joint coordinates body extracted through lightweight posture recognition model. Finally, three parameters designed as features achieve accurate recognition. The method verified self-built datasets public...

This paper takes Stonex X300 3D laser scanners as a design scheme, tests ranging nominal and precision of instrument compares between calculating solution the measured distance Leica TS30 total station. Experiment result shows is given on basis certain distances while experiment conditions. In process collecting data in field surveying, it cannot completely reach its calibration value due to conditional limitation error easily reaches value. However, terms station-scaled scanners, too high...

Walker is a widely used mobility aid to improve users’ stability and ambulatory ability. Its dynamometer instrumentation necessary for quantitative study of basic biomechanics functional requirements effective use. How extract the kinetic demands exactly without any disturbance normal gait remains bottleneck walker design. Based on force measurement handle reaction vectors (HRVs) applied walker, this developed novel strain gauge-based wireless system integrated with static calibration...

Clarify the potential mechanism of cellular chemical processes at and molecular levels in native environment is currently an important research topic life sciences. Recent efforts past decade indicate that atomic force microscopy (AFM) a powerful tool for studying single cells molecules under near-physiological conditions AFM strongly promotes development nanobiotechnology. Rituximab monoclonal antibody against CD20, which member leukocyte differentiation antigens with high expression on...

This paper proposes a multi-modality-based machine vision gap detection method, aiming at the problems of insufficient feature extraction, low accuracy point cloud segmentation, and poor edge fitting effect in traditional carbon fibre composite material methods. First, an improved sub-pixel method is proposed to extract more abundant features. Then, adaptive unified orientation designed achieve accurate segmentation centreline by enhancing curvature feature. Finally, innovative joint...

Abstract Background : Large building fires are currently the most direct and serious type of fire that causes property damage casualties, delayed evacuation is one important reasons for casualties. Therefore, how to safely quickly evacuate trapped individuals has become focus research by many scholars. Our goal propose a robust, universal, high-precision escape path utilizes minimal human intervention, making algorithm practical highly fitting scene. Results This article constructs framework...

The existing image enhancement methods for underwater manganese nodules have scene limitation and high algorithm complexity, resulting in low accuracy processing efficiency of the effect. article proposes an unsupervised multiple joint optimization based on Retinex (UM-JOR). By introducing a fixed threshold differential function to optimize global algorithm, problem speed is solved. At same time, lightweight network designed Retinex, integrating three units brightness, color noise...

Cooperative spectrum sensing under network overhead constraints is studied. To protect the primary user well, detection probability must exceed predefined threshold. Based on protection of user, optimal number cognitive users are defined by weighting performance and usage efficiency in a target function. The analysis function given energy fusion strategy center. simulation results show validity constraints.

Continuous path keyboard input has higher inherent ambiguity than standard tapping, because the trace may exhibit not only local overshoots/undershoots (as in tapping) but also, depending on user, substantial mid-path excursions. Deploying a robust solution thus requires large amount of high-quality training data, which is difficult to collect/annotate. In this work, we address challenge by using GANs augment our corpus with user-realistic synthetic data. Experiments show that, even though...

In order to solve the problem of unsatisfactory accuracy spectrum prediction in a network with multiple primary users, this paper proposes cooperative algorithm. The overlapping alliance game is introduced into prediction. structure highest collaborative selected, and result obtained. experiment, three different methods are compared effects parameter values on simulation results analysed. show that proposed method has high accuracy, adaptability robustness.

In order to solve the problem of unsatisfactory accuracy spectrum prediction in a network with multiple primary users, this paper proposes cooperative algorithm. The overlapping alliance game is introduced into prediction. structure highest collaborative selected, and result obtained. experiment, three different methods are compared effects parameter values on simulation results analysed. show that proposed method has high accuracy, adaptability robustness.