Dynamics

In kinematic synthesis and analysis of planar mechanisms the designer must define a geometry and set of motions for a design task. This paper will focus on how to determine the forces or torques acting on the planar mechanism by numerical method when acceleration and dynamic properties of the linkage are known.

9p viling 11-10-2024 3 1   Download

Electricity demand is increasing, transmission line development can not keep up with it. This puts the power system in a full load state which puts the power system operating near the boundary of stability. This paper applies deep neural networks to predict power system dynamic stability.

10p viling 11-10-2024 2 1   Download

The article presents some theoretical foundations to solve the problem of dynamic control and optimizing the structure of multifunctional carbon nanofiber-reinforced material plates with integrated piezoelectric crystal.

13p viling 11-10-2024 1 1   Download

In this study, the objective is to refine the facility layout of a push belt manufacturing plant to decrease potential contract penalty fees that may arise from delays and to diminish the expenses associated with material handling.

8p viling 11-10-2024 3 1   Download

This research aims to enhance comprehension of legal texts by applying Talmy's (2017) threestep process for identifying and integrating referents from contextual cues into linguistic forms. Drawing on pragmatics, discourse analysis, cognitive semantics, and Talmy's force dynamics notion, a qualitative content analysis investigates the cognitive processes readers use for cue detection, attention allocation, and semantic integration when reading court indictments.

13p viling 11-10-2024 4 1   Download

Bài viết này đề xuất sử dụng thiết bị khôi phục điện áp động Dynamic Voltage Restorer (DVR) nhằm giảm thiểu sóng hài trong lưới điện theo quy định. Mô hình của thiết bị DVR và một xuất tuyến trung áp của lưới phân phối Vĩnh Phúc được xây dựng trong phần mềm Matlab/Simulink.

5p vifilm 11-10-2024 3 1   Download

In this paper, we propose an effective AMC using deep learning (DL) for flexible and adaptive OFDM-based optical networks. The proposed DL-based AMC is able to classify four typical modulation schemes such as binary phase-shift keying (BPSK), quadrature PSK (QPSK), 8-PSK, and 16- quadrature amplitude modulation (QAM) in dynamic network conditions.

6p viengfa 28-10-2024 3 2   Download

In this paper, a nonlinear path tracking controller based on a combination of kinematics and torque backstepping methods is applied to a nonholonomic Two-Wheeled Mobile Robot (WMR). The mobile robot is considered in terms of dynamics model in Cartesian coordinates and its parameters are exactly known.

6p viengfa 28-10-2024 2 2   Download

The paper explores the application of the Modal Truncation algorithm in Model Order Reduction, focusing on its effectiveness in reducing high-dimensional mathematical model. The algorithm identifies dominant modes governing dynamic responses, discards the high-order model, and reconstructs a new model with reduced dimensions.

6p viengfa 28-10-2024 5 2   Download

The nonlinear dynamic buckling responses of functionally graded graphene platelet reinforced composite (FG-GPLRC) cylindrical and sinusoid panels with porous core are presented in this paper. The governing formulations are established by applying the nonlinear higher-order shear deformation theory (HSDT).

10p viengfa 28-10-2024 3 2   Download

This study focuses on investigating the effect of negative pressure on the structure and diffusion processes of Silicon dioxide at liquid nitrogen temperature. The insights gained from this study will serve as a foundation for future experimental research aimed at the development and manufacturing of advanced materials.

11p viengfa 28-10-2024 2 2   Download

The paper generalizes one practical tool for analyzing the structural dynamics for the high-speed railway bridge based on Cast3M open-source. Compared with the classical approach with the analytical formulation, KD-Railway developed by the finite element method allows defining the structure with complex geometry and considering a different type of structure (truss, cable, hybrid composite) or the structure-soil interaction.

10p viengfa 28-10-2024 3 2   Download

This paper develops an Artificial Neural Network (ANN) model based on 96 experimental data to forecast the dynamic modulus of asphalt concrete mixtures. This study applied the repeated KFold cross-validation technique with 10 folds on the training data set to make the simulation results more reliable and find a model with more general predictive power.

9p viengfa 28-10-2024 5 2   Download

This study aimed to investigate the impact of digital storytelling on improving grade 6 students’ listening comprehension at a primary and secondary school in a mountainous province in Vietnam.

7p vipanly 28-10-2024 7 3   Download

In the paper "Shock waves emitted at the collapse of a laser-induced cavitation bubble in the vicinity of a free surface", we investigated the dynamic of a cavitation bubble induced by laser ablation in liquid in the vicinity of a free surface. The observation was conducted using high-speed laser stroboscopic videography in photoelasticity mode. We showed the bubble contracted faster in the vertical direction and formed a flat bubble at the minimum contraction. At the collapse, the bubble emitted multiple shock waves.

4p xuanphongdacy09 29-09-2024 4 1   Download

In this research, Molecular Dynamics (MD) simulations were conducted to explore the temperature effect on the microstructure and phase transition of the Ag0.25Au0.75 alloy. The findings reveal that as the temperature rises, the material's phase transition switches from crystalline to liquid and vice versa.

9p viengfa 28-10-2024 6 1   Download

Nghiên cứu áp dụng mô hình hồi quy dữ liệu bảng động (Dynamic panel data model regression) để đánh giá tác động dài hạn của quản trị công đến tăng trưởng kinh tế bằng cách sử dụng dữ liệu về bộ chỉ số quản trị của Ngân hàng thế giới cho 23 quốc gia thu nhập trung bình tại khu vực châu Á trong khoảng thời gian 12 năm (từ năm 2008 đến năm 2020).

16p viengfa 28-10-2024 2 1   Download

This article presents a discussion of the advantages, disadvantages, and development trends of existing realtime identification systems and techniques commonly applied to offshore jacket structures.

14p viyamanaka 06-02-2025 2 1   Download

Hydroplaning is a dangerous phenomenon during operations at airports that causes loss of control of aircraft during takeoff and landing. In tropical climates with high average annual rainfall like Vietnam, the risk of hydroplaning is very high.

8p viyamanaka 06-02-2025 2 1   Download

This study is devoted to determining dynamic parameters of dense coral sand using Controls dynamic triaxial compression testing device under large deformation and different confining pressure conditions. Parameters analyzed in the present work include excess pore pressure, damping ratio, dynamic elastic modulus and dynamic shear modulus.

12p viyamanaka 06-02-2025 5 1   Download