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By the aim to enhance the listening skills of EFL freshmen, an experiment was conducted using cartoons with thirty-five first-year students in an experimental group, compared to a control group, through pre-tests and post-tests. The intervention took place over five weeks during the first semester of the 2022-2023 school year, utilizing ten cartoons as research tools.

9p viengfa 28-10-2024 0 0   Download

In recent years, landslides are taking place very seriously, and tend to increase in both scope and scale, threatening people's lives and properties. Therefore, timely detection of landslide areas is extremely important to minimize damage. In this paper, an improved algorithm for partitioning data with reliability problems using multiple fuzzifiers named as TSSFC is introduced.

9p viengfa 28-10-2024 1 1   Download

The findings reveal the social capital of the Vietnamese in Poland with a striking characteristic of a high level of bonding ties, primarily relying on close relations such as family or ethnic organizations to seek support and placing a very high level of confidence in family members.

19p viling 11-10-2024 3 0   Download

This paper proposes an optimal methodology to place a supercapacitor energy storage system (SESS) for urban railway lines. The proposed method uses simulation tools to determine the level of renewable energy as well as the cycle of renewable energy occurrence at substations.

15p vibecca 01-10-2024 1 1   Download

Construction project delay has been reported as a significant cause of the project’s failure, which results in cost overrun, thereby decreasing the effectiveness of the project. Therefore, project management has placed much effort in construction works’ scheduling to enhance project performance.

15p vibecca 01-10-2024 2 1   Download

Currently, along with the economic development, the urbanization process has been taking place strongly, putting great pressure on the water supply for urban areas and industrial zones, leading to conflicts, overlapping and obstacles to the water supply management.

4p vibecca 01-10-2024 3 2   Download

Tien Yen, Quang Ninh is a locality with a favorable geographical position, a place of convergence and connection of ethnic groups in the Northeast of Vietnam. In this paper, multiple approaches, and model of preserving and utilizing Tien Yen cultural heritage to meet the goal of sustainable development are also discussed.

5p vibecca 01-10-2024 2 0   Download

Recently, the application of textile-reinforced concrete (TRC) in thin-walled precast structures has gained significant attention. Among these innovations, the combination of TRC and reinforced concrete (RC) has emerged as an effective method for creating hybrid structural systems. This paper presents the experimental results analyzing the shear behavior of a hybrid deck slab structure consisting of TRC stay-in-place (SiP) formwork and RC components.

10p vibecca 01-10-2024 3 0   Download

This paper proposes a lefthanded circularly polarized (LHCP) 2×4 array antenna using sequential phase rotation power dividers at 5.8 GHz band. The element antenna is a square patch antenna with a slit in the middle for better impedance matching, six trapezoidal parasitic patches added to either side of the main patch to create resonance at high frequencies, and a metasurface placed on top of the main patch.

11p vibecca 01-10-2024 2 1   Download

Jiaogulan (Gynostemma pentaphyllum (Thunb.) Makino) is distributed mostly in mountainous areas, in shaded and humid places at 300-3200 meters above sea level. This study was conducted to determine the appropriate application dose of nitrogen for the growth of Jiaogulan under different shading conditions.

11p vibecca 01-10-2024 1 1   Download

This article analyzes and evaluates the impact of the Yen Dinh solar power plant in Thanh Hoa, Vietnam when connected to the 22kV power grid such as: reverse power flow, overvoltage, influence of harmonics, changes operational methods for placing economic capacitors and coordinating protection when the plant is connected to the distribution grid are also calculated and analyzed.

8p viyoko 01-10-2024 3 1   Download

The main research methods include the qualitative survey with half-structured interviews conducted in three wards: Truong Dinh, Thuy Phuong and Sai Dong. The research outcomes reveal the most frequently-visited places among young migrant workers. It is noticeable that they do not go there very often.

10p vifilm 24-09-2024 3 1   Download

This paper aims to present thermo-electrical free vibration characteristics of functionally graded material (FGM) sandwich beam placed on the two-parameter elastic foundation. The beam is constructed of a foam core, two middle FGM layers, and two outer piezoelectric layers.

14p vifilm 24-09-2024 2 1   Download

The paper will study both traditional aspects and contemporary aspects; components of street culture, including the physical character, function and activities; and local people’s perception of the street, which are represented the entity of a place.

11p viyoko 24-09-2024 2 1   Download

Due to the policy of the Doi moi in Vietnam started in 1986, Hanoi has undergone many important changes. Currently, Hanoi’s traffic is characterized by seemingly continuous motorcycle flows - a representative of high personal mobility in the context of rising incomes. Congestion, dust, pollution, insecurity, overload, etc., they are important keywords to describe Hanoi’s urban traffic. Hanoi has put in place a number of policies to improve the transportation system.

11p viyoko 24-09-2024 4 1   Download

In this study, construction sequence and prediction of axial bearing capacity of M-pile on cohesive soil were introduced. M-pile analysis used with outer diameter of 318.5 mm and thickness of 12.7 mm. The analysis results show that the ultimate bearing capacity prediction of M-pilein soft clay soil considerably increase compared with bored and cast-in-place piles with the same diameter and depth thanks to multiple blades welded along the pile shaft.

8p vifaye 20-09-2024 1 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 was conducted on 19 patients with internal carotid artery stenosis, in which the stent was placed to recreate the flow, at Hue Central Hospital from January 2018 to January 2020.

5p vinatisu 29-08-2024 0 0   Download

Splenic ectopic pregnancy is extremely rare but carries a high risk of life-threatening intraperitoneal bleeding. Here, we present a 40-year-old woman presenting with vaginal bleeding. Although the intrauterine device (IUD) had been in place for 6 years, urinary and serum tests were positive for pregnancy.

6p vikoch 27-06-2024 4 1   Download

The main contribution of this paper is to show a new AC/DC converter based on the rearrangement of the flyback converter. The proposed circuit only manages part of the energy and the rest is delivered directly from the source to the load. Therefore, with the new topology, the efficiency is increased, and the stress of the components is reduced. The rearrangement consist of the secondary of the flyback is placed in parallel with the load, and this arrangement is connected in series with the primary side and the rectified voltage source.

16p 63696369 20-06-2024 4 2   Download