Analysis of the Lagging Time of Employment Structure in Vietnam

If any country’s or region's employment structure lags behind the industrial structure adjustment, which shows that the two structures are not developing in coordination. However, the deviation degree of structure is mainly the imbalance between industrial structure and employment structure. The lag refers to the degree to which the employment structure lags behind the industrial structure in the time dimension, and when the relationship between industrial structure and employment structure is measured in terms of time. Employment lags behind time over a long horizon which in turn causes serious unemployment, and affect industrial structure adjustment and upgrade. The study construct an analysis model for the lag time of the employment structure and provide findings that will resolve the incompatible state of the two structures, and promote the healthy development of industrial structure and employment structure in Vietnam. Through the research conclusion it is revealed that, after three years, the effects of industrial structure adjustment fully reflected the change of employment structure in Vietnam. Keywords: Lagging Time; Employment Structure; Vietna

Factors Affecting the Choice of Supermarket for Shopping by Consumers in Hanoi Capital in Vietnam

In recent years, the Vietnam's economy has been growing, the demand for shopping and consumption of Vietnamese people has been sharply increased. The boom of branded and prestigious supermarket chains in the market such as Big C, Mobile World, Vinmart, or new retailers entering the organized retail market (supermarkets) in Vietnam has partly met the shopping needs of Vietnamese people. The authors select the scope of the study is Hanoi capital to identify and measure the factors that influence consumers' decisions to choose a shopping supermarket. Through qualitative and quantitative analysis, the research results show that there are 07 factors that influence the consumer's decision of choosing supermarkets to buy goods in Hanoi capital, which are the goods, prices, Convenience, reliability, supermarket staff, communication marketing and shopping environment. In particular, goods have the biggest influence on the consumer's decision choosing the supermarkets to buy in Hanoi, Vietnams. Keywords: Consumers; Supermarket; Consumer behavior DOI: 10.7176/EJBM/12-3-06 Publication date: January 31st 202

Experimental Design in Plasma Welding of SUS 304 Stainless Steel Thin Plates

Background: This research focuses on the evaluation of the independent influence and the bidirectional interaction of some welding parameters in butt welding for the SUS 304 stainless steel thin plates using the automatic plasma welding system (450 +/- Plasma, SP7Turmatic from Lincoln). Contribution: The findings will serve as a reliable background to design the mathematical model for the prediction of the tensile strength for the plasma welding of   steel SUS 304 thin plates in terms of the nomination of the optimal process for adopting the requirement in industry. Method: The welding setting is nominated for 04 main changing parameters, such as the peak current of welding (Ih, A); the background current of welding (Ib, A); the welding speed (vh, cm/min); the feeding rate of the welding wire (vc.d, cm/min); the diameter of the wire (d = 1.0 mm); and the flow rate of the shielding gas (Gk.p, 2.0 l/min). Mathematical statistics software ANOVA using to analyze the influence of the parameters on the tensile strength of the weld as the target function. Results:  The tensile strength of the plasma welding samples is about 650 MPa at the equivalent level of the other publications. This proved the reasonable welding setting for the preliminary investigation. Conclusion: Authors proved the nomination of the main plasma welding technological parameters, such as the peak current, the background current, the welding speed, and the feeding rate of the wire, is reasonable towards the maximum tensile strength, one of the important criteria in the weld performanc

Industrial Structure and Employment Structure Coordination In Viet Nam

A coordinated development between industrial structure and employment structure is indeed an important problem in every country. A reasonable industrial structure can promote the benign development of employment structure, the quality of employment structure has laid a solid foundation for the transformation and upgrading of industrial structure. This paper uses discrete ratios of structure and the coordination coefficients of the industrial structure and employment structure to calculate Vietnam's industry structure and employment structure coordination for the period of 1995-2013. The results have shown that the Vietnamese industry structure and employment structure from 1995 to 2013 is in a state of imbalance. The overall coordination is bad. Coordination coefficients are showing obvious changes in volatility. Keywords: Industrial structure, Employment structure, Coordinate analysi

Study of Factors Affecting the Leadership Capacity of CEO in Industrial SMEs in Vietnam

The leadership capabilities of management team greatly influence the performance of management activities in an enterprise. Capturing and evaluating the impact of elements influencing leadership ability might help enterprises to formulate policies to optimize the capacity of the management team. The scope of the study in this paper is the survey of SMEs in Vietnam. The research team conducted 141 surveys by executives and managers working as heads of departments within current industrial SMEs in Vietnam. Research has indicated the three influential factors including self-efficacy, environment and personal characteristics, with personal traits making the least impact. Keywords: Leadership capabilities, CEO, small and medium industry enterprises

Industrial Structure and Employment Structure Evolution and Forecast in Viet Nam

The interaction mechanism between industrial structure and employment structure has great importance in the development of any economy. But it always needs a constant vigilance to adjust and evolve which promotes the economic development of a country. This study tries to find out the optimization correlation between industrial structure and employment structure in Vietnam for the period of 1995-2014. This study has found that labor is moving gradually from low efficiency production section to high efficiency production section. This paper uses the vector auto-regression model (VAR) to forecast industrial structure and employment structure change trend in Vietnam for 2015-2020. The forecasted results show that industrial structure trend is moving towards higher progression, eventually transforming to "321" pattern. However, the change in employment structure lags behind changes in the industrial structure as labor structure is showing a "132" pattern. Keywords: Industrial structure, Employment structure, vector auto-regression, Vietna

STUDY ON APPLICABILITY OF THE CONTACT OXIDATION PROCESS IN REMOVAL OF ORGANIC POLLUTANTS FROM TEXTILE WASTEWATER

Joint Research on Environmental Science and Technology for the Eart

An efficient adaptive fuzzy hierarchical sliding mode control strategy for 6 degrees of freedom overhead crane

The paper proposes a new approach to efficiently control a three-dimensional overhead crane with 6 degrees of freedom (DoF). Most of the works proposing a control law for a gantry crane assume that it has five output variables, including three positions of the trolley, bridge, and pulley and two swing angles of the hoisting cable. In fact, the elasticity of the hoisting cable, which causes oscillation in the cable direction, is not fully incorporated into the model yet. Therefore, our work considers that six under-actuated outputs exist in a crane system. To design an efficient controller for the 6 DoF crane, it first employs the hierarchical sliding mode control approach, which not only guarantees stability but also minimizes the sway and oscillation of the overhead crane when it transports a payload to a desired location. Moreover, the unknown and uncertain parameters of the system caused by its actuator nonlinearity and external disturbances are adaptively estimated and inferred by utilizing the fuzzy inference rule mechanism, which results in efficient operations of the crane in real time. More importantly, stabilization of the crane controlled by the proposed algorithm is theoretically proved by the use of the Lyapunov function. The proposed control approach was implemented in a synthetic environment for the extensive evaluation, where the obtained results demonstrate its effectiveness. © 2022 by the authors. Licensee MDPI, Basel, Switzerland

Risk factors of dengue fever in an urban area in Vietnam: a case-control study

BackgroundDengue is a mosquito-borne flavivirus present in many metropolitan cities of tropical countries.MethodsDuring and after the dengue season (September 2018 to January 2019), we conducted a case-control study in order to determine the risk factors for dengue fever in Hanoi city, Vietnam. 98 dengue patients and 99 patients with other acute infections, such as Hepatitis B virus infection, were recruited at Department of Infectious Disease of Bach Mai national hospital in Hanoi. Patients were interviewed using a structured questionnaire covering demographic, housing, environmental factors and knowledge, attitude, and practice on dengue prevention and control. Univariate analysis and multivariable logistic regression were used to determine the risk factors of dengue status.ResultsThe mean score of knowledge items and practice items was only 7.9 out of total 19 points and 3.9 out of total 17 points, respectively. While the mean score of attitude items was 4.8 out of total 6 points. Multivariable logistic regression indicated that older patients had lesser risk of getting dengue infection as compared to younger adults aged 16-30, and patients living in peri-urban districts were less likely to suffer of dengue fever than patients living in central urban districts (OR=0.31; 95% CI 0.13-0.75). This study could not find any association with occupation, water storage habit, knowledge, attitude, or practice on dengue prevention.ConclusionsAll patients had a relatively low level of knowledge and practice on dengue prevention and control. However, the attitude of the participants was good. We found that age group and living district were the risk factors correlated with the dengue status. Communication programs on raising dengue awareness should be repeated all year round and target particular groups of adolescents, younger adults, landlords and migrants from other provinces to improve their knowledge and encourage them to implement preventive measures against dengue fever

Medicinal Plants Used by the Tay Ethnic Group, Thai Nguyen Province, Vietnam

An ethnobotanical study of medicinal plants used by the Tay ethnic group in Thai Nguyen province, Vietnam has been carried out in the present study, especially in the region of Định Hoá, Phú Lương, and Võ Nhai districts. The ethnobotanical survey was conducted between 2018 and 2021 and a catalog of the medicinal plant used by the Tay ethnic group is prepared. The results of the current survey revealed that the plants used by Tay ethnic group consist of 321 species belonging to 253 genera and 103 botanical families. Majority of the plants belonging the family Euphorbiaceae (20 species), Asteraceae (19 species), Acanthaceae and Rutaceae (13 species each), Fabaceae (12 species), and Poaceae (11 species). Leaves were the most frequently used plant part (48.0%) in the preparation of medicines. The most frequent preparation method was decoction (47.7%), followed by crushing (29.9%), sauna (18.0), pickle wine (11.8%), and raw (5.6%). The major plant used by Tay ethnic people were Schefflera heptaphylla (L.) Frodin and Plantago major L., (2); Elephantopus scaber L. and Achyranthes aspera L.; Streblus asper Lour. We also carried out screening of some of the medicinal plant extracts for their biological activities especially the inhibition of cancer cell lines