Autism spectrum disorders are increasing worldwide and in Vietnam. This study reports the prevalence of autism examines their relation to selected socio-demographic factors among children aged 18 30 months three northern cities/provinces Vietnam, 2017.This was a cross-sectional conducted 17,277 one city (Hanoi capital) two provinces The multi-stage sampling technique applied this study. We used M-CHAT screen with high risk ASD. positive cases were diagnosed by pediatric neurologists from...

This article describes the development of a computational model for determining thermodynamic state after detonation wave methane fuel mixture in engine. The is based on Chapman-Jouguet hypothesis and its results are compared to experimental data methane-oxygen fuel. study explores how characteristics methane-air mixtures change under different initial conditions, such as fuel-air ratios pre-detonation pressures. It identifies optimal conditions confirms energy efficiency structural...

Objectives: Identify the incidence and related factors of early clinical deterioration in patients after discharge from intensive care unit (ICU) Department Neurology Neuro Intensive Care, VietDuc University Hospital Materials Methods: A prospective study was conducted From January 2024 to October 2024. Clinical is identified by presence signs such as respiratory failure, requiring endotracheal or tracheostomy intubation, mechanical ventilation, high-flow oxygen therapy; circulatory shock...

Pneumatic artificial muscle (PAM) is a potential actuator in human-robot interaction systems, especially rehabilitation systems. However, PAM nonlinear with uncertainty and considerable delay characteristics, making control challenging. This study presents discrete-time sliding mode approach combined the adaptive fuzzy algorithm (AFSMC) to deal unknown disturbance of PAM-based actuator. The developed logic system has parameter vectors component rules that are automatically updated by an law....

City governments are well-positioned to effectively address urban health challenges in the context of rapid urbanization Asia. They require good quality and timely evidence inform their planning decisions. In this article, we report our analyses degree data-informed from three Asian cities: Dhaka, Hanoi Pokhara. Our theoretical framework stems conceptualizations evidence-informed policymaking, policy analysis, includes: (1) key actors, (2) approaches developing implementing plans, (3)...

In lower-limb rehabilitation systems, exoskeleton robots are one of the most important components. These help patients to execute repetitive exercises under guidance physiotherapists. Recently, pneumatic artificial muscles (PAM), a kind actuator that acts similarly human muscles, have been chosen power robot for better human–machine interaction. order enhance performance PAM-based robot, this article implements an active disturbance rejection control (ADRC) strategy with nonlinear extended...

In this paper, at first, a teleoperation robot systemwith haptic feedback for rehabilitation is presented. A mechanism capable of providing force by means adjusting the system’s impedance proposed. The stability with via time-delay communication environment mathematically proved. proposal operates theoretically both passive and active assisted movement using to rehabilitate upper limb function. An EMG-moment arm model proposed assessing muscle strength. performance two-joint link six muscles...

The input shaping technique is widely used as feedforward control for vibration suppression of flexible dynamic systems. main disadvantage the increasing system time response since shaper contains delay parts. However, with same reference input, actuator effort in case using an smaller than one without shaper. Thus, it possible to decrease by designing feedback controller maximize effort. This paper proposes a design approach Proportional-Derivative (PD) position so that settling minimized....

In this paper, a teleoperation mechanism capable of providing force feedback by means adjusting the system's impedance is proposed for master-slave telerehabilitation robot system. The stability with haptic via time-delay communication environment mathematically proved. By using mechanism, system can work theoretically both passive assisted movement and active rehabilitation upper limb function. Experiments single DOF show effectiveness mechanism.

Speed up movement to increase productivity may cause problems such as vibration. The tool we propose suppress vibration is based on input preshaping, and its visual graphical user interface makes it easy use. Testing of the at high speed suppressing in a semiconductor wafer transfer robot confirmed feasibility our proposal.

In this paper, a master-slave robot system involving haptic feedback and teleoperation for rehabilitation is presented. A mechanism capable of force by means brake proposed. The stability the with via time-delay communication environment mathematically proved. Moreover, in order to reduce packet transfer rate data transmission, deadband control approach used. new reconstruction algorithm proposed improve system's performance while maintaining stability. This allows passive assisted movement...

Serial elastic actuators have gained significant attention in robotics research due to their ability meet safety requirements physical interactions between humans and robots. However, one problem of series actuator is the oscillation robot flexibility robotic joints leading a decline accuracy robot’s position control. In this paper, dynamic surface control algorithm based on backstepping technique for serial proposed overcome problem. addition, has been proved be stable robust. The...

This study introduces a novel adaptive controller employing neural networks, particularly radial basis function (RBF) algorithms, to enhance the control performance of pneumatic artificial muscle (PAM)-based systems. The proposed seeks address nonlinearities and hysteresis inherent in PAM-based systems by integrating approximation. Experimental testing comparisons with conventional controllers are conducted using an antagonistic configuration PAMs. results illustrate precision reliability...

<title>Abstract</title> During trolley translation along the jib and rotation, a tower crane with an underactuated drive system can cause considerable amount of sway to payload. A number studies have been performed address this issue, particular attention being paid use sliding mode control (SMC), which has demonstrated effectiveness in tracking position reducing vibrations. Some side effects relying solely on SMC, however, include chattering saturation input signals. Our paper proposes...

Pneumatic Artificial Muscles (PAMs) exhibit hysteresis, nonlinear, and uncertain characteristics. This makes it difficult to build a highly precise model of PAM. In this study, modified Bouc-Wen is used describe the hysteresis in relationship between internal pressure joint angle PAMs antagonistic configuration. Through an identification method using particle swarm optimization, verified that proposed can approximate behavior PAM based actuator with high accuracy. could lead enhancing...

Speed up movement to increase productivity may cause problems such as vibration. This paper proposes a vibration suppression tool with visual graphical interface solve the problem based on input shaping approach. The proposed was then applied in real industry processes of semiconductor wafer transfer robot and gantry loader high speed operation good results were obtained that confirm validity tool.

The exploitation of spiritual values to develop tourism in Vietnam already formed the value chain tourism. first goal is increasing benefits for local economy. However, issue economic only one part sustainable development. If we focus on and do not care about environmental, cultural social conservation, will have get environmental risks. From fieldwork activities with in-depth interviews, participant observation destinations Vietnam, including Sam Mountain - Chau Doc An Giang, author had...