Control performance

In this study, the efficacy of educational technology tools in enhancing speaking skills was explored through a quasi-experimental design involving 84 IT freshmen. Employing tools such as FORVO (FV), YouGlish (YG), and Oxford Advanced Learners' Dictionary (OALD) 8th edition, the research compared the speaking abilities of students using these technologies (experimental group) against those taught through traditional methods (control group).

8p vipanly 28-10-2024 2 2   Download

High quality of service (QoS) requirements in multi-priority wireless sensor networks pose new challenges to the Internet of Things (IoT). In a multi-event wireless sensor network (MWSN), nodes generate different types of data packets with different priority such as urgent (high priority) or normal (low priority), with different traffic proportion.

10p viengfa 28-10-2024 2 2   Download

In this paper, we build a quadcopter for target tracking by integrating a embedded computer Raspberry Pi (RPI) with a Pixhawk flight controller. This article also proposes a lightweight Tracking algorithm that can be deployed on Raspberry Pi, this algorithm harnesses advanced image processing and computing capabilities to significantly enhance target tracking performance, thereby reducing the need for human intervention control in unmanned flights.

9p viengfa 28-10-2024 3 3   Download

This research explores the development of a novel slow-release fertilizer coating composed of polyvinyl alcohol (PVA), tapioca starch, and modified rice husk char. These results underscore the potential of using rice husk char in biopolymer coatings to enhance the environmental performance of fertilizers, offering a sustainable approach to agricultural management.

8p viling 11-10-2024 2 1   Download

This study was conducted to examine the effects of baby corn density on the crop and weed performance under two different maizesoybean intercropping systems. The results showed that the yield of soybean and the growth of the weeds were statistically different under the different maize-soybean intercropping systems.

14p vibecca 01-10-2024 3 2   Download

This paper proposes a model reference adaptive control (MRAC) design for vehicle active suspension systems with unknown spring stiffness and damping coefficients with the aim of improving the performance of suspension systems.

8p viyoko 01-10-2024 3 1   Download

In the paper, 3L-MPC algorithm with fast calculation is proposed to control many objectives such as unit power factor, capacitor voltage balance and switching frequency reduction. In addition, the outer PI controller is used to adjust the DC-bus voltage. The simulation results demonstrated the excellent performance of the proposed method, both in transient and steady states.

8p viyoko 01-10-2024 2 2   Download

In the paper, an ADRC approach is applied to position control problem of 1DOF-FLM. The system model is derived based on Euler-Lagrange equations formulating a foundation for calculating ADRC parameters. Simulations results show good performance of the closed-loop system.

6p viyoko 01-10-2024 3 2   Download

The study which applies quantitative methods along with the support of EVIEWS software points out a statistical significance relationship. Firstly, the CS has a contrariwise impact on ROA but no effect on ROE and ROS. Secondly, among control variables (asset structure, expenditure ratio, revenue), the expenditure ratio is the only one showing a contrariwise impact on ROS and the rest has no statistical significance.

10p viormkorn 27-09-2024 7 2   Download

The findings of this study are expected to offer not only a useful tool for construction professionals delivering appropriately managerial functions contributing to ODAIPs success and sustainability, but also active feedbacks to further enhancing of the ODA’s policies.

12p vifilm 24-09-2024 2 1   Download

This study uses densified mixture design algorithm (DMDA) to design the mixture proportions green mortars incorporating fly ash and ground granulated blast furnace slag (GGBFS). Three green mortar mixtures with various paste contents were designed using the DMDA method while a control cement-based mortar mixture was designed using the conventional method for comparison.

13p vifaye 20-09-2024 2 1   Download

The study in this paper utilizes Vietnamese firm-level data to investigate the relationship between trade liberalization and the productivity performance of Vietnam’s manufacturing sector. The data covers the years 2007 to 2016 when substantial trade liberalization took place. The semi-parametric approach developed by Levinsohn and Petrin (2003) is used to control for simultaneity bias in the estimation of a production function and to obtain TFP estimates.

15p toduongg 24-08-2024 4 1   Download

This study aims to compare niche incidence between single- and double-layer uterine closure techniques and describe related factors among women with full-term primary C-section. From May 2022 to March 2023 at Hanoi Obstetrics and Gynecology Hospital, a double-blind, randomized controlled trial was performed on 116 participants (64 in single- and 52 women in double-layer group).

11p vinatisu 23-08-2024 2 1   Download

The C-EPS steering system's performance is affected by a range of technical parameters, including steering column inertia, steering column stiffness, column damping, rack stiffness, rack damping, and steering column pinion radius. The simulation results in both the frequency domain and the time domain indicate the influence of structural parameters on the system characteristics.

7p tuongbachxuyen 05-08-2024 3 1   Download

The paper aims to find out whether appropriate choice of collaboration model will enable the required inventory control leading to improved business outcomes and supply chain key performance indexes.

5p longtimenosee10 26-04-2024 6 2   Download

In this research paper, an adaptive sliding controller designed to enhance seismic response mitigation in structural systems with prescribed performance is presented. Through comprehensive theoretical analysis and simulation studies, the efficiency of the performance function has been simulated for a one-degree-of-freedom structure.

5p phuong798 26-12-2023 4 3   Download

The purpose of the study is to quantify breast dose to reassure patients and staff that these understandings still apply. A combination of measurements and simulations were used to estimate absorbed breast dose. Gafchromic® XR-QA2 film was used to measure breast dose placed inside the RANDO® phantom in a series of controlled experiments. The RANDO® is an anthropomorphic phantom commonly used for dosimetry investigations. Gafchromic® XR QA2 film is a radiochromic film that changes colour when irradiated. Simulation is commonly used and readily available.

195p runthenight05 01-03-2023 6 3   Download

Model Predictive Control (MPC) refers to a class of algorithms that optimize the future behavior of the plant subject to operational constraints. The merits of the class algorithms include its ability to handle imposed hard constraints on the system and perform on-line optimization. This thesis investigates design and implementation of continuous time model predictive control using Laguerre polynomials and extends the design approaches proposed in to include intermittent predictive control, as well as to include the case of the nonlinear predictive control.

162p runthenight07 01-03-2023 9 4   Download

The main focus of this thesis is on the application of a model predictive control (MPC) method to devise an ABS for a BBW vehicle. Unlike the traditional ABS control algorithms which are based on a trial and error method, the MPC based ABS algorithm aims to utilizes the behaviour of the model to optimize the wheel slip dynamics subject to system constraints. Performance of the proposed wheel slip controller is validated through Software-in-the-Loop (SiL) and Hardware-inthe-Loop (HiL) simulation.

136p runthenight07 01-03-2023 7 3   Download

This thesis represents the first comprehensive study on the performance (raw and risk-adjusted), performance persistence, and market timing ability of the equity funds in Hong Kong Mandatory Provident Funds (MPF) scheme during the period 2001 – 2004. Regardless of the measure used (Jensen single-index alpha measure, Fama-French three-factor alpha measure, and modified Jensen alpha controlled by changes in exchange rates), US equity funds and Pacific-Basin excluding Japan equity funds, are found to consistently underperform relative to the market.

237p runthenight04 02-02-2023 5 2   Download