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For secure communications, the authors propose a underwater wireless optical communications code-division multiple-access (UOWC/CDMA) system with multiple relay assistance. Relay nodes employ the Chip Detect-and-Forward (CDF) technique to prevent the difficult multiuser decoding procedure. The proposed system performance, in terms of bit-error rate (BER) and transmission confidentiality, is analyzed in our study over fading channel.
11p vithomson 02-07-2024 0 0 Download
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This paper focuses on utilizing a dataset obtained from Amazon, comprising reviews spanning various product categories such as laptops, cameras and mobile phones. Following data preprocessing, we employ machine learning algorithms to classify the reviews as either positive or negative sentiment.
6p vithomson 02-07-2024 0 0 Download
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The operations of critical bus stops on arterial roads substantially influence the facility bus capacity and the bus quality of service in terms of schedule reliability. The aim of this article is to employ the methodology in the Transit Capacity Quality of Service Manual (TCQSM) to better understand the performance of key bus stops on arterial roads in Hanoi city.
12p vithomson 02-07-2024 0 0 Download
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Part 1 book "Hybrid electric power train engineering and technology - Modeling, control, and simulation" included contents: Introduction to the hybrid power train architecture evolution, the energy–power requirements for hev power train modeling and control, electric machines in hybrid power train employed dynamic modeling backgrounds, generic models of electric machine applications in hybrid electric vehicles power train simulations;.... and other contents
218p dianmotminh04 12-07-2024 0 0 Download
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This study is an attempt to investigate the concept of work readiness, job requirements in the digital age, factors affecting the capability to meet the job requirements in the digital age, and recommendations for stakeholders in enhancing graduate employability.
9p vialicene 02-07-2024 0 0 Download
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Although the concept of translanguaging is not new, little is known about how it is employed and viewed by Vietnamese English as a Foreign Language (EFL) teachers in both public and private institutions. The study continues to confirm the results of previous studies, supporting translanguaging use in EFL classrooms.
18p vialicene 02-07-2024 0 0 Download
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This study used a qualitative method of research employing a phenomenological method of investigation to gather necessary data through an interview guide from 8 informants who were purposively chosen.
12p vialicene 02-07-2024 0 0 Download
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Implementing video clips to enhance university students’ reading skills has been popular in Vietnam. This study aimed to explore the effects of employing video clips in reading improvement of English-majored freshmen from their perspectives.
14p vialicene 02-07-2024 0 0 Download
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This study aims to explore the challenges encountered by remote learners, the effectiveness of Project-Based Learning (PBL) applied in teaching speaking skills online, and learners’ attitudes towards the applied project. To do this, a mixed research method was employed.
19p vialicene 02-07-2024 1 0 Download
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This study investigates the experiences of peer observation among Vietnamese teachers of English and their perceptions of the benefits and challenges of peer observation. The study employed a quantitative research method to collect data.
15p vialicene 02-07-2024 0 0 Download
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This paper seeks to address how captioned videos are used as an instructional aid in classrooms of English as an additional language (EAL). The paper employs a narrative literature review to synthesize prior studies and reach pedagogical conclusions for utilizing the captioned videos.
13p vialicene 02-07-2024 3 0 Download
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This paper employed a quantitative approach using a face-to-face survey of 140 respondents using e-wallets in Can Tho City, Vietnam. This study has identified the user characteristics of the top three e-wallet services in Can Tho City, Vietnam, suggesting that each service has unique features that attract different user groups.
15p vialicene 02-07-2024 3 0 Download
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This study investigates external and internal factors affecting students’ interaction in English-speaking classes to develop effective strategies to improve their interaction. The study was conducted among sixteen classes at the Faculty of English at Hanoi Open University, with 86 students in total. Questionnaires and interviews were employed as data collection instruments for the study.
9p viwalton 02-07-2024 2 1 Download
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The purpose of the study is to investigate the first-year English majors' perceptions of using the shadowing technique and their practices in learning English speaking skills at the Faculty of English, Hanoi Open University. A questionnaire survey was employed to gather data for the study. The structured questionnaire was administered to 253 participants from class K29.
9p viwalton 02-07-2024 4 1 Download
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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 viwalton 02-07-2024 2 2 Download
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The paper presents a case study on the use of in-situ reinforcement technique, namely soil nail, to stabilize a shallow foundation of an existing building constructed on weathered siltstone. The two-dimensional limit equilibrium method was employed to evaluate the stability of the existing foundation with/without incorporating soil nail elements.
12p viwalton 02-07-2024 1 1 Download
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This research aims to evaluate the impact of CW issuance on the price and liquidity (measured by trading volume and bid-ask spread) of underlying stocks on the Vietnamese stock market. The study employs the event study methodology and Wilcoxon test to examine whether abnormal returns, trading volume, and bid-ask spreads change after CW issuance.
14p viwalton 02-07-2024 3 1 Download
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This article addresses the challenges of constructing urban tunnels in soft ground using tunnel boring machines, emphasizing geological behavior, tunnel lining loads, and soil displacement. FEM analytical and simulation methods are employed to calculate surface settlements, face-support pressure, and lining load, with a focus on evaluating geological influences on subway line design.
6p viwalton 02-07-2024 1 1 Download
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This study endeavors to evaluate the safety, efficacy, and prognostic impacts of employing hepatic arterial infusion chemotherapy (HAIC), lenvatinib, and humanized programmed death receptor-1 (PD-1) in the treatment of high-risk HCC patients.
11p vishanshan 27-06-2024 1 1 Download
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Smoking is a significant public health concern in China and a leading cause of lung cancer deaths among adults. This study aims to employ three methods to estimate smoking-attributable lung cancer mortality among Chinese adults from 2000 to 2020.
13p vishanshan 27-06-2024 3 1 Download