In this paper, we investigate the global stability of quaternion-valued neural networks (QVNNs) with time-varying delays. On one hand, in order to avoid noncommutativity quaternion multiplication, QVNN is decomposed into four real-valued systems based on Hamilton rules: ij = - ji k, jk -kj i, ki -ik j, i <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> j k ijk -1. With Lyapunov function method, some criteria are, respectively, presented...

In the presence of malicious denial-of-service (DoS) attacks, this paper investigates tracking control mobile robots. Some explicit characterizations are presented for frequency and duration properties DoS attacks. A hybrid model is established by considering attacks event-triggering control. The significance to develop a set conditions ensure convergence. As well, these can guarantee existence uniformly positively minimum interval between any two successive transmissions. Finally, practical...

Due to properties of flexibility, adaptiveness, error tolerance, and time-determinism performance, the FlexRay communication protocol has been widely used investigate robot systems new generation automobiles. In this paper, with protocol, tracking problem a class cyber-physical are investigated by developing general hybrid model, in which an emulation controller is utilized. Based on proposed some sufficient conditions established guarantee convergence errors. Then, maximum allowable...

Static magnetic field (SMF) treatment is a new type of physical preservation method. In this study, SMF was applied to fresh-cut lotus root investigate its effects and possible mechanisms in terms preserving color maintaining freshness, with the goal developing method for root. Fresh-cut treated strength 3 mt stored 14 days under cold conditions (temperature 4 °C, humidity 70%, wind speed 0.1–0.3 m/s, no light). The control group received treatments. on color, hardness, browning, weight...

For the development and operating efficiency of Web applications based on Model-View-Controller (MVC) framework, and, according to actual business environment needs in project practice, framework application system is studied this paper. Through research Spring MVC Mybatis as well some related core techniques, combined with JSP JSTL technology, paper realizes design a lightweight Mybatis.

A hierarchical control strategy is designed for the position-based formation tracking of rotorcraft-like aerial vehicles without linear velocity measurements. In outer loop, cooperative algorithm based on auxiliary systems, to let all agents go toward desired positions. Based an extraction algorithm, quaternion-based attitude extracted. inner inherent passivity property applied compensate but unextracted angular velocity, which makes procedure more separate. Combined with property, and...

This paper focuses on the time-varying formation tracking issue for nonlinear multiagent systems (MASs). Based explicit characterizations of frequency, duration, and magnitude properties deception attacks, a hybrid framework is proposed MASs. To realize desired performance under distributed edge-based event-triggered communication strategies are with Zeno-freeness. The designed resilient to attacks some appropriate assumptions, predefined simultaneously track convex combination leaders'...

The practical application of the Canadian Agility and Movement Skill Assessment (CAMSA) has been reported in some Western countries. However, a few studies CAMSA Chinese children. In addition, given that was designing to incorporate both movement skills agility assessment, value validity timing component are worth discussing.By choosing Illinois Test, Repeated Side Step-1 m distance, newly designed Step-half height as benchmark, we evaluate performance CAMSA, further establish concurrent...

In this paper, we design an event-triggering based hybrid control strategy for the time-varying attitude tracking of aircraft system, where networked communication is confined with denial-of-service (DoS) attacks. The designed introduces a binary-logic-variable-based law to overcome topological constraint on SO(3), together sampling mechanism determine when update controller. Combined two kinds flows/jumps and general explicit characterization frequency/duration properties DoS attacks,...

As one of the important tools national governance, project system has been embedded in field higher education China, and become a new phenomenon mode organizational management colleges universities. Teaching is positive way to optimize resource allocation, improve incentive mechanism promote teaching innovation, but from perspective analysis, it still exists environment polarization contradictions, organization individual theatre form, group involution phenomenon. Therefore, necessary layout...

An effective approach is presented to improve intermodal third-harmonic generation in microfibers. It demonstrated that structure-independent incident pump power could be utilized, via its effect on nonlinear phase modulations, compensate for the mismatch caused by diameter deviation. The output harmonic of a fabricated microfiber can optimized adaptively; thus, efficient with efficiency reaching several percent realistically achieved.

This paper designs an event-triggering based communication strategy for the global attitude synchronization of a network rigid bodies. To overcome topological constraint on manifold <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$SO(3)$ </tex-math></inline-formula> , quaternion-based hybrid control is designed using binary logic variable, relying relative measurements adjacent bodies, to determine torque...

A multiliteracies pedagogy has been gaining momentum in EFL (English as a Foreign Language) teaching and learning. Modern educational technologies integrated course design hold promising potential to foster students’ multiliteracies. The present study aims examine the effectiveness of blended investigate what extent learning enhances To this end, questionnaire was administered 94 first-year Chinese college students their English class. Online posts by were collected interviews with teacher...

In this article, we propose a new random reset rule for attitude control systems, where Lyapunov–Foster function implies the robust global without adding any constraints on rule, except support domain involved variables. Compared with deterministic binary logic variables, variables introduce an automatically adjusted hysteresis half-width each process, thus bring flexible tradeoff between hysteresis-induced inefficiency avoiding unwinding phenomenon and robustness to measurement noise. A...

During the mining process of fully-mechanized caving faces, roof roadway behind working face easily forms an arched-shape hanging structure with pushed forward, which results in potential hazards such as gas accumulation and large-scale collapse. Based on actual situation a at difficult end top coal through borehole exploration, surrounding rock displacement observation, bolt stress monitoring, theoretical formula calculation, numerical simulation methods, characteristics are studied. The...

By designing a time-regularized (Zeno-free) event-triggered strategy for the state-feedback control law, this paper considers stochastic stabilization of networked systems, where communication is constrained by pulsing denial-of-service (DoS) attacks. The attacks' cardinal number supposed to be subject Poisson distribution, so inter-attack time, i.e., time between two consecutive attack instants, exponential distribution. considered system modeled as hybrid formalism, randomness enters...

This study mainly explores the impact of student's information literacy on student’s creativity, classroom climate and moderatoring effects between creativity. used questionnaire surveys for data collection senior grade elementary school students from Tainan. Survey participants consist 349 10 schools. research SPSS20.0 to apply descriptive statistics, pears correlation analysis, multiple regression hierarchical linear modeling. Main findings this included following. It is a positive And it...

In this study, we constructed elastin-like polypeptides (ELPs) fusion proteins with different topological structures and investigated the effects of salts types concentrations on phase transition proteins.Results showed that temperature ELPs protein typologies varied from 1 to 10.9 °C under salt concentrations, which was higher than their corresponding linear ELPs.Among them, maximum difference observed when concentration Na 2 CO 3 0.05 mol/L a disparity value 11.5 °C.Meanwhile, decreases...