Using variables

This study proposes the application of Ensemble Decision Tree Boosted (EDT Boosted) model for forecasting the surface chloride concentration of marine concrete Cs. A database of 386 experimental results was collected from 17 different sources covering twelve variables was used to build and verify the predictive power of the EDT model.

12p viengfa 28-10-2024 2 1   Download

In this study, an artificial neural networkbased Bayesian regularization (ANN) model is proposed to predict the compressive strength of concrete. The database in this study includes 208 experimental results synthesized from laboratory experiments with 9 input variables related to temperature change and design material composition.

12p viengfa 28-10-2024 1 1   Download

The objective of this article is to investigate the free vibration analyses of the functionally graded magneto-electro-elastic (FG MEE) plates supported by an elastic foundation using the refined plate theory (RPT) with two variables.

12p viling 11-10-2024 1 0   Download

The study was carried out by surveying 181 individual customers who are Gen Y and have been using fast food services at fast food stores in Hanoi and using the SERVQUAL model with 5 independent variables: Tangibility, Responsiveness, Assurance, Reliability, and Empathy.

8p vifilm 11-10-2024 0 0   Download

In this study, the extraction of chlorogenic acid from Vietnamese green coffee beans was optimized using the response surface methodology. A second-order polynomial model with three important variables (liquid-to-solid ratio, temperature, and extraction time) was used.

11p vibecca 01-10-2024 1 1   Download

Expanding international cooperation relations is expected to bring many opportunities to the Vietnamese banking industry to develop and enhance its position in the world market. This empirical study used the Z-score index to measure bank stability, and impact factors (independent variables) were selected based on the CAMELS analytical framework.

13p viormkorn 27-09-2024 3 2   Download

Cash holding is an important decision that affects many other choices in a firm. Previous studies have revealed a range of factors affecting cash holdings, but little is known about a macro variable: air pollution, which is quite a pressing issue recently and globally. This study examines the association between air pollution and cash holdings using a sample of listed firms in Vietnam, a developing country that has a worrisome level of air pollution.

12p viormkorn 27-09-2024 2 2   Download

We present a generalized three-variable high order shear deformation theory (THSDT) using isogeometric analysis (IGA) to analyze free vibration of functionally graded porous (FGP) plates reinforced by graphene platelets (GPLs) in this work. It is named as FGP-GPLs for a short. The proposed theory only has got three degrees of freedom (DOFs) per node as the same way of numerically solutions in three-dimensional (3D) solids.

16p vifilm 24-09-2024 1 1   Download

Salinity intrusion poses significant challenges to coastal regions worldwide. Reliable salinity prediction models can provide valuable information to mitigate the impact and influence of salinity intrusion. However, their accuracy relies mainly on the selected input variables and used optimal models. This study employs the Bayesian Model Averaging (BMA) algorithm to evaluate input variable importance and select the most reliable salinity prediction model.

15p vifaye 20-09-2024 1 1   Download

This study investigates the static bending and free vibration behaviour of Multi-directional Functionally Graded (MFGM) plates having a variable thickness. With this regard, the third-order shear deformation plate theory is used to describe the kinematic relation.

20p vifaye 20-09-2024 1 1   Download

This paper presents a longitudinal investigation of flood fatalities in Vietnam. More specifically, we use the available national disaster database and machine learning techniques to investigate the importance of different attributes of flood damage to the attribute of flood fatalities.

12p vifaye 20-09-2024 4 1   Download

The main objective of this paper is to use the data-driven approach to predict and study the factors affecting the compressive strength of steel fiber concrete. Therefore, six machine learning (ML) models were evaluated against a database of 166 samples and ten input variables, including Cement content, Water content, Silica fume content, Steel fiber content, Coarse aggregate content, Sand content, Superplasticizer content, Fiber diameter, Fiber length, Fly ash content.

15p vifaye 20-09-2024 2 1   Download

Exports has played an important role in economic growth in most countriesand territories. The article uses a panel data regression model to analyze the growth of ten provinces in Red River Delta (Vietnam) in the period 2005-2020. The research result shows that there are factors that positively affect the economic growth of Red River Delta, including investment capital (variable LnI), labor (variable LnL), exports (variable LnEx) and price index (variable CPI).

9p toduongg 24-08-2024 4 1   Download

The main objective of the research is to examine internet banking service quality’s impact on customer satisfaction of Bank for Investment and Development of Vietnam (BIDV). This study is a quantitative study using the SERVQUAL model developed by Parasuraman et al. (1988) in internet banking service to define 5 dimensions of internet banking service quality as independent variables and customer satisfaction is the dependent variable. Questionnaires were also given for 320 customers and 300 surveys which were valid for analysis.

16p toduongg 24-08-2024 2 0   Download

This paper studies the effect of government contracts on trade credit by using a crosscountry firm-level data from the Enterprise Surveys of the World Bank with 10,200 observations. We apply the instrumental variable to take into account the endogeneity problem caused by the simultaneous relationship between government contracts and trade credit. Our empirical results show that government contracts have negative effects on trade credit.

29p toduongg 24-08-2024 2 0   Download

natural fiber for the construction of hybrid bio-composites. In the current research project, a thorough analysis of the use of soy-PF resin for the creation of composites reinforced with jute was conducted. A novel and practical cutlery material was created after the mechanical properties were evaluated and optimized. In order to study the value addition of these newly proposed biocomposite materials as an ecological alternative in terms of natural resources versus synthetic resources, variables such as hardness, cytotoxicity, and degrading qualities of composites were also explored.

9p dianmotminh02 03-05-2024 5 2   Download

The aim of this study was to investigate the profitability of variable reduction methods for predicting the risk of the stock price drop of companies listed in Tehran Stock Exchange. To achieve this, the literature review was conducted and 24 primary variables were selected which were most frequently used in the literature and the required data for measuring them was available.

10p longtimenosee10 26-04-2024 6 2   Download

The data collected using purposive sampling and Slovin formula. The hypothesis of this research is tested by multiple linier regression. The research results showed that the variable site design, informative, security and communication have a partialy significant effect to the online shopping customer satisfaction, while the convenience of shopping variable is not significant. This understandable because each online store has different system and procedure that incovenience for consumers.

9p longtimenosee10 26-04-2024 6 3   Download

The purpose of this paper is to study the characteristics of competitiveness in firms’ sectors of the Greek manufacturing industry, based on firm level accounting and qualitative data attempting to identify key issues regarding Greek SMEs. An unbalanced data set of 407 Greek manufacturing SMEs is implemented, covering the period of 2003-2011 with the use of a multivariate regression model (EGLS) with explanatory variables characterizing firms’ operational activity.

7p longtimenosee10 26-04-2024 2 2   Download

A salient way used to determine those effects is assessing the HDI (Human Development Index) of host country before and after receiving the foreign direct investment. HDI is calculated with regards to three aspects of education, longevity and income. Although, until now, HDI has its own drawbacks that need special attention. Therefore, since 2010, a new measurement called Inequality-adjusted Human Development Index (IHDI) has been created and calculated by United Nations Development Program.

5p longtimenosee09 08-04-2024 7 3   Download