Equation

This paper is devoted to the study of existence, uniqueness and other properties of solutions of a 3-order nonlinear integrodifferential equation (IDE) in three variables in an arbitrary Banach space.

12p viengfa 28-10-2024 3 1   Download

This paper evaluates an energy harvesting strategy for UAVs from sunlight and laser beams on cloudy days with a low-level cloud layer. The channel models and harvested powers for both cases are considered and analyzed using mathematical equations and simulation results.

7p viengfa 28-10-2024 3 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 3 2   Download

This article aims to investigate the impact of personal background characteristics on the socialization with academic aspects of ethnic minority students in higher education institutions in Ho Chi Minh City. A quantitative method was used to measure the extent of the impact of these elements.

12p viling 11-10-2024 3 1   Download

In this study, Partial Least Square – Structural Equation Modeling (PLS-SEM) was used to analyze data from the questionnaire survey of 363 customers who are familiar with live streaming platforms in Vietnam. By using SmartPLS for data empirical evaluation and hypotheses testing, research shows that the social presence of a live streaming platform and scarcity have a positive impact on consumer’s flow states, hence inducing consumers’ impulsive buying behaviors.

20p viling 11-10-2024 3 1   Download

The study investigated the relationship between service quality, brand image, satisfaction, and consumers’ continuous purchase intention. We collected research data from 258 consumers who bought goods at supermarkets in Tra Vinh City.

12p vifilm 11-10-2024 2 1   Download

This research explores how customer engagement with the F&B brand’s dedication to social responsibility, sustainable business practices, and corporate governance influences impulsive buying. An online survey was requested, and a total of 322 participants were chosen for data analysis. To conduct statistical analysis, partial least squares structural equation modeling (PLS-SEM) was used with the SmartPLS3 program.

6p vifilm 11-10-2024 3 1   Download

The present work deal with the propagation of a horizontally polarised shear (SH) wave in an infinitely long cylindrical structure comprised of three concentric isotropic layered media. The model has been formulated in cylindrical co-ordinates and an analytical approach is employed to achieve the closed form of the dispersion equation.

3p vibecca 01-10-2024 2 2   Download

The results of using machine learning via genetic programming (GP) to automatically generate novel effective length factor formula in accordance with AISC standard are presented in this article. The data points obtained from applying the numerical method equation solving for the transcendental equation for the effective length of the braced frame were fed into the machine learning algorithm.

5p vibecca 01-10-2024 3 1   Download

In this paper, we investigated the factors influencing the adoption of electric motorcycles in two major cities, Ho Chi Minh City and Da Nang. A paper-based questionnaire was proposed. Through data analysis based on established measurement standards, we identified positive and negative factors affecting the use of electric motorcycles.

15p vibecca 01-10-2024 2 2   Download

The present study is going to fill in the gap by performing a review on the typical standard equations for the moment modification factors of simply supported beams and fixed beams subjected to an arbitrary point load. Also, a detail comparison between the equations will be discussed and key warnings will be made.

10p vibecca 01-10-2024 1 0   Download

In this study, eight traditional regression equations representing the linear and non–linear correlation between gauging discharge and water level (stage) at PoLech station in Da river, were evaluated with the aim of determining the most suitable equations for discharge interpolation and high flow extrapolation.

17p vibecca 01-10-2024 3 2   Download

The objective of the paper was to analyze the factors influencing the purchase intention of consumers for imported beef in Long Bien district, Hanoi. Quantitative and qualitative methods were employed in this study based on an online survey using a structured questionnaire.

16p vibecca 01-10-2024 4 2   Download

In this report, we examine the unsteady Stokes equations with nonhomogeneous boundary conditions. As an application of a Carleman estimate, we first establish log type stabilities for the solution of the equations from either an interior measurement of the velocity, or a boundary observation depending on the trace of the velocity and of the Cauchy stress tensor measurements on a part of the boundary.

16p vibecca 01-10-2024 3 2   Download

In this study, we investigated one of the most popular stochastic volatility pricing models, the Heston model, for European options. This paper deals with the implementation of a finite difference scheme to solve a two-dimensional partial differential equation form of the Heston model.

14p vibecca 01-10-2024 7 2   Download

The study was conducted to analyze the factors affecting the use of pig wastewater for crop cultivation in Hanoi city. Through the application of the Theory of Planned Behavior to develop the theoretical framework and structural equation modeling, the study showed that the behavior intention influenced the recycling behavior.

11p vibecca 01-10-2024 6 2   Download

This study unpacks the structural relationship of tourism interpretation service on destination image and intention to revisit destinations. This study fulfills the research objective by collecting and analyzing 406 survey questionnaires by tourists who visited Binh Dinh and Phu Yen provinces

19p viyoko 01-10-2024 2 1   Download

We also applied our proposed model to a real life system of an islanded MG at small-scale with demand, PV power, and WTG power forecast, and the DEG output power is control variable. The results of test system have demonstrated the effectiveness of the proposed method.

9p viyoko 01-10-2024 5 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

In this paper, the bending and warping shears are considered. The main novelty of this paper is to apply a Ritz solution for the buckling analysis of thin-walled composite beams. The governing equations are derived by using Lagrange’s equations.

11p vifilm 24-09-2024 4 1   Download