Anomalous Magnetic Dipole Moment (g−2)μ(g-2)\mu in 3-3-1 Model with Inverse Seesaw Neutrinos

We will show that the recent experimental value of the anomalous magnetic moment (AMM) of the charged lepton m , denoted as $a_mu (g-2)\mu/2$, can be explained successfully in a 3-3-1 model with right handed neutrino adding new heavy $SU (3)_L$ neutrinos singlets. Allowed regions satisfying the recent AMM data are illustrated numerically

Using Fine-Grained Sediment and Wave Attenuation as a New Measure for Evaluating the Efficacy of Offshore Breakwaters in Stabilizing an Eroded Muddy Coast: Insights from Ca Mau, the Mekong Delta of Vietnam

Offshore breakwaters can be effective in reducing the energy of incident waves through dissipation, refraction or reflection. Breakwaters are increasingly constructed to stabilize eroded muddy coasts, particularly in developing countries. Accumulation of fine-grained sediment and wave attenuation are two attributes of a stable muddy coast. Effective interventions in stabilizing eroded muddy coasts include two important elements: accumulation of fine-grained sediment and wave reduction. The efficacy of offshore breakwaters in stabilizing eroded muddy coasts is, however, not yet adequately understood. A crucial question needing attention is whether accumulation of fine-grained sediment and wave attenuation should be used in evaluating the efficacy of these offshore breakwaters in stabilizing eroded muddy coasts. To address this issue, a pile-rock offshore breakwater in Huong Mai, Tieu Dua of Ca Mau, Vietnam was selected as an appropriate example in this regard. Accumulation of fine-grained sediment and wave attenuation were tested as means to investigate the efficacy of the Huong Mai structure in stabilizing the eroded muddy coast. The study was undertaken using field-based measurements and semi-structured interviews in three stages between October 2016 and December 2020. We found that this structure has had limited efficacy in stabilizing the eroded muddy coast. The structure was effective in dissipating the energy of incident waves, but we found no evidence of fine-grained sediment accumulation due to an inappropriate structural design. There was also no monitoring system in place, leading to difficulties in evaluating its efficacy in terms of wave attenuation and accumulation of fine-grained sediment. The gaps between the shoreline and the structure have not been adequately explained, resulting in substantial challenges in replicating the structure elsewhere. The Huong Mai structure should be strengthened using supplementary measures and granulometric tests in order to improve the efficacy in stabilizing eroded muddy coasts. The methods in this study provide new insights in this regard

Perceptual Learning Style Preference for Medical Terminology: A Case Study of 20 ESP Students

Due to the globalization, there has been a great demand for learning English for Specific Purposes (ESP) in different fields. How to teach medical terminology effectively to pre-service medical professionals is one of the main challenges that ESP instructors encounter in their English in Medicine classrooms. A variety of factors, including but are not limited to student learning style preference, prior knowledge, classroom facilities should be considered. In this study, we conducted a case study of 20 students in an ESP class to explore their learning style preference. This study employed two data collection instruments: questionnaire and interview. Data analysis interestingly revealed that the location of students’ secondary education has an influence on their perceptual learning style preference of medical terminology at tertiary level. Drawing on the results, this study argues for a balance between student learning preference and teaching mythology. Keywords: ESP, perceptual learning style preference, medical terminology DOI: 10.7176/JLLL/66-06 Publication date:March 31st 202

A Phenomenological Study of Writing Error Correction: Perspectives of an English Language Learner in Two Different Contexts

In second language writing, student errors in grammatical structure, word choice, or idea expression are a common phenomenon. How these errors should be treated poses a challenging question. In this qualitative study I attempt to explore the impacts of some current methods of error correction in second language writing through a phenomenological study of an English language learners who studied in Vietnam and the United States. The study participant was invited to reflect his learning experiences in an interview with the researcher. Theme-based analysis of the interview revealed that the manner in which teachers correct errors can have a considerable impact on student motivation to improve second language writing. The study participant indicated that over-correction of language errors inhibited his motivation to write in second language and that language teachers may consider providing an adequate amount of correction and feedback. Pedagogical recommendations are made to help teachers make appropriate corrections for their students’ writing papers. Keywords: second language writing, error correction, theme analysis DOI: 10.7176/JLLL/94-02 Publication date: December 31st 202

Practical Solutions to Ensure the Schedule Management of Ho Chi Minh City Urban Railway Project in Vietnam: Survey of Expert's Opinions

The development of the construction industry is considered to be a significant factor contributing to the economic growth of states and countries. However, many studies have shown that the quality of time and schedule management on civil and construction projects has generally been poor. Thus, it is essential to investigate factors that significantly affect the project schedule. This research aims to examine the practice of time management on a particular construction transport project in a developing country, the urban railway project in Ho Chi Minh City, Vietnam, with its six main lines. The implementation of this project began in 2010, but so far, only two lines have been constructed. The implementation process has been struck by many difficulties leading to the slow implementation of the entire urban railway system. To investigate the main causes leading to project delays, a research survey was carried out in three main stages: (1) a questionnaire was designed (2) data was collected with the participation of experts, and (3) an analysis of the data verification of the research model. Then, the analytical hierarchy process approach was applied to assess the priority level of the proposed solutions to ensure the effectiveness of the schedule of the entire urban railway project

Barrier Factors Affecting Development of Intelligent Transport System Projects

This paper identifies potential barrier factors affecting effectiveness and development (ED) of ITS projects as well as criteria for measuring ED of ITS projects in Ho Chi Minh City, Vietnam. The study discovers the barrier constructs, and analyzes data using the Partial Least Squares Structural Equation Modeling method (PLS-SEM). The results provides a general and comprehensive overview of the main issues of ITS, and identifies 28 barrier factors with five main constructs affecting ED of ITS projects, namely the lack of undivided attention from the government (AG), financial constraints for ITS (FC), inadequate transport infrastructure (ITI), the over-development of urbanization (ODU), and the readiness and integration for ITS (RI). This paper fill the knowledge gap by discovering the causal relationships between barrier constructs and ED of ITS projects in Vietnam. Also it proposes several solutions for these issues, which are also a useful measurement tool for government agencies, planners, and traffic system designers to help them self-assess and make action plans now or in the near future

Data assimilation method in flood forecasting for Red river system using high performent computer

Around the world, the data assimilation framework has been reported to be of great interest for weather forecasting, oceanography modeling and for shallow water flows particularly for flood model. For flood model this method is a power full tool to identify time-independent parameters (e.g. Manning coefficients and initial conditions) and time-dependent parameters (e.g. inflow). This paper demonstrates the efficiency of the method to identify time-dependent parameter: inflow discharge with a real complex case Red River. Firstly, we briefly discuss about current methods for determining flow rate which encompasses the new technologies, then present the ability to recover flow rate of this method. For the case of very long time series, a temporal strategy with time overlapping is suggested to decrease the amount of memory required. In addition, some different aspects of data assimilation are covered from this case

EFL Agreeing and Disagreeing Discourses in Facebook

Agreeing and disagreeing are two common speech acts that occur in social conversations. Driven by the fact that there are direct and indirect way for expressing agreement and disagreement, and there are also mitigating strategies to protect interlocutors from face-threatening in disagreeing discourses, this study examined EFL students’ use of discourse strategies in their Facebook interaction. Thirty-four pre-intermediate EFL students at a university in Vietnam took part in this study. Data analysis shows that direct discourses is linguistically limited while indirect ones exhibit wider language use. Students also demonstrate two different directions of using mitigating strategies for their disagreeing discourses. Some pedagogical implications are also suggested in this study. Keywords: agreeing, disagreeing, direct, indirect, strategies DOI: 10.7176/JLLL/86-03 Publication date: February 28th 202

Application of Google Docs in English for Specific Purposes Collaborative Writing

English language learners today have considerable opportunities to practice their writing skill via their peer interaction in Web 2.0 platforms, such as Blogs, Wikis, and Google Docs. Different studies have investigated the influence of these platforms on student writing collaboration and interaction, but few studies had explored factors that may affect English for Specific Purposes (ESP) student collaborative writing in Vietnamese settings. This study, therefore, attempts to explore the impact of four factors, namely gender, student attitudes towards learning English, student economic status, and availability of English at home on Google Docs-based interaction and collaborative writing outcome at a southern university in Vietnam. Fifty participants took part in this study and they worked collaboratively in small groups in Google Docs to finish two writing tasks and complete a survey afterwards. Analysis of their survey, interaction, and writing outcome suggests that gender, student attitudes towards learning English, and the number of books available at their homes have an impact on their writing outcome whereas their economic status did not seemingly affect their writing quality. Some pertinent pedagogical implications are also discussed in this paper. Keywords: Google Docs, collaborative writing, English for Specific Purposes DOI: 10.7176/JLLL/78-02 Publication date: April 30th 202

Bioethanol Production from Lignocellulosic Biomass

An overview of the basic technology to produce bioethanol from lignocellulosic biomass is presented in this context. The conventional process includes two main steps. First, lignocellulose must be pretreated in order to remove lignin and enhance the penetration of hydrolysis agents without chemically destruction of cellulose and hemicellulose. Second, the pretreated material is converted to bioethanol by hydrolysis and fermentation. Some typical published studies and popular processing methods in attempts to improve the biomass conversion to bioethanol and increase the cost-effectiveness are also introduced briefly. Herein, the refinery of the resulted raw bioethanol mixture to obtain higher concentrated solution is not regarded