Existing development for cyclone separation cleaning components of the rapeseed combine harvester, which employs suspending airflow to separate rapeseeds from materials other than grain (MOG), has challenge figure out optimal working parameters, highlighting a need exploration invisible based on Computational Fluid Dynamics (CFD). The status was mainly affected by air velocities inlet, and outlet MOG. single factor response surface experiments were carried out. It could be found that inlet...

As location information becomes vitally important, positioning has been a highly desirable feature of 5G system which enables huge amount location-based applications and services. Millimeter wave (mmWave) is the promising technology for both offering better spectrum resource performance. A virtualized indoor office scenario with only one mmWave base station (BS) considered in this paper. User equipment (UE) motion feature, line-of-sight (LoS) first order reflection paths' AoA-ToA are fused...

Covert communication refers to achieving high-level secure transmission by protecting behaviour. This paper primarily centres on the examination of covert in scene power Internet Things (PIoT). Specifically, we explore scenario where users (PU) transmit information master station (MS) while being exposed potential eavesdropping. In addition, assume that Willie has noise uncertainty when detecting behaviour, which makes it difficult for accurately detect and significantly affects detection...

Abstract A rapid, sensitive immunochromatographic (IC) assay was developed to detect ricin toxin in buffer and food samples. The based on the sandwich format using a monoclonal antibody (mAb) polyclonal (pAb) of two distinct specificities. ricin-containing sample added membrane allowed react with pAb-coated particles. mixture then passed along porous by capillary action past mAb detection zone, which would bind particles that had bound their surfaces, giving red colour within zone an...

The use of ground control points (GCPs) for georeferencing is the most common strategy in unmanned aerial vehicle (UAV) photogrammetry, but at same time their collection represents time-consuming and expensive part UAV campaigns. Recently, deep learning has been rapidly developed field small object detection. In this letter, to automatically extract coordinates information by detecting GCP-markers images, we propose a solution that uses learning-based architecture, YOLOv5-OBB, combined with...

Video smoke detection is a promising fire method especially in open or large spaces and outdoor environments. Traditional video methods usually consist of candidate region extraction classification, but lack powerful characterization for smoke. In this paper, we propose novel based on deep saliency network. Visual aims to highlight the most important object regions an image. The pixel-level object-level salient convolutional neural networks are combined extract informative map. An end-to-end...

In this study, the engineering properties of remolded diatomite and effects cement on compression characteristic, strength microstructures cement-stabilized were investigated. Samples prepared stabilized with different content ratios, ranging from 0% to 15% by dry mass. Results show that compared undisturbed diatomite, compressibility increases while characteristics decrease. With increase content, is significantly reduced are improved. Adding changes structure pure forms more tiny pores...

Covert communication is able to provide high-level security by protecting behavior. In this paper, we develop a covert cooperative cognitive radio (CCCR) network, where primary transmitter (PT) transmits information with the aid of multiple secondary transmitters (STs). return, STs are transmit private exploiting PT's spectrum in presence powerful eavesdropper (Eve). Meanwhile, propose user scheduling scheme based on link and maximum-minimum principle. Moreover, derive Eve's expected...

研究在月球表面环境下月球车的牵引通过性能,对保证其正常探测工作具有重要意义.根据牵引性能的评价指标,在模拟月壤-车轮土槽测试系统上对不同结构参数的驱动轮牵引性能进行对比试验.结果表明,当增大驱动轮宽度和直径时,其挂钩牵引力和效率系数都呈增大趋势;增大驱动轮的轮刺高度,挂钩牵引力增大;当滑转率小于20%时,效率系数随着轮刺高度的增大而增大,而当滑转率大于20%时,效率系数随着轮刺高度的增大而减小;增大驱动轮轮刺密度时,其挂钩牵引力和效率系数随之先增大后减小.

The paper proposed an online analysis for motion captured data. Traditional manifold-based can only perform in offline mode, which limits the applications and developments of data-driven computer animation. By reserving eigenspace reconstructing space using new instance, be achieved. Numerical training instances extended while maintaining reasonable dimensions. experiments results demonstrated feasibility merits.

Existing rape combine harvester with a cyclone separation cleaning device has the challenge that loss rate and increase decrease simultaneously. A process route was proposed, which involves removing light tiny impurities, cylinder sieve coarse long impurities such as pod shells short stems. novel system combining devices designed. The ranges of structure operation parameters for each component were analyzed based on kinematics dynamic analysis. four-factor five-level quadratic orthogonal...

Covert communication is capable of enhancing user privacy by protecting behavior. In this article, employing overlay and underlay spectrum access modes, we investigate a covert cooperative cognitive radio (CCCR) system, where primary transmitter (PT) secondary (ST) cooperate with each other to secretly transmit their own confidential information. Specifically, PT can initiate the transmission directly or information aid ST. return, ST able exploiting PT's spectrum. our assume that both send...

The proximal humerus is a common site of osteoporotic fractures, and bone quality predictor surgical reduction quality. Dual-energy computed tomography (DECT) assuming an increasingly important role in the quantification mineral density (BMD) due it ability to perform three-material decomposition. We aimed analyze distribution with DECT quantitatively.Sixty-five consecutive patients (average age 49.5±15.2 years; male: female ratio 32:33) without fractures who had undergone were...

Abstract At present, most intercepting facilities in water intake open channel of nuclear power plant are passive. Moreover, the correlation between layout and hydraulic conditions is not considered. Hence, unreasonable. The cooling system plants faces risks. In this paper, flow field characteristics under typical sea hydrologic were studied. Then, migration path aggregation rule floating or suspended objects simulated along with flow. blockages-removal effect floats marine organisms studied...