Performance gap of two users in downlink full-duplex cooperative NOMA

A full-duplex non-orthogonal multiple access (FD-NOMA) systems are expected to play a significant role in fifth generation (5G) networks, addressing spectrum efficiency and massive connections. In this regard, the feasibility of FD communications to improve spectrum utilization is main consideration in term of outage performance. Specifically, we derive exact formulas of outage probability for FD-NOMA, over Nakagami-m fading channels. Extensive analysis revealed that higher quality of channel leads to better performance. We verify expressions throughout Monte-Carlo simulations

COMPLEX SENTENCES USED IN ENGLISH-MAJORED STUDENTS’ ESSAY WRITING: PEDAGOGICAL IMPLICATIONS

The research investigates the use of complex sentences in students’ essay writing, exploring pedagogical implications for teachers to enhance students’ writing proficiency. 212 essays were collected from English-majored students in the last semester for essay learning at Can Tho University, but only 162 essays were qualified for analysis, equivalent to the number of essays in the corpus by Truong & Do (2021). Their complex sentence structures were analyzed and compared with the corpus to identify similarities and differences in the use of complex sentence structures. The findings of this research suggest that there are clear patterns in the types and frequency of complex sentences used by students, which may have implications for the design of the curriculum as well as the teaching and learning of writing essays. Implications for classroom practice and future research directions are discussed.  Article visualizations

Exact Outage Performance Analysis of Amplify-and-forward-aware Cooperative NOMA

In this paper, new radio access scheme that combines Amplify-and-Forward (AF) relaying protocol and non-orthogonal multiple access (NOMA) system is introduced. In particular, different scenarios for fixed power allocation scheme is investigated. In addition, the outage probability of both weak and strong user is derived and provided in closed-form expressions. Such outage is investigated in high SNR scenario and comparison performance between these NOMA scenarios is introduced. Numerical simulations are offered to clarify the outage performance of the considered scheme if varying several parameters in the existing schemes to verify the derived formulas

Performance Investigation of High-Speed Train OFDM Systems under the Geometry-Based Channel Model

The high-speed of train (HST) in combination with the high carrier frequency of HST systems leads to the severe inter carrier interference (ICI) in the HST orthogonal frequency division multiplexing (HST-OFDM) systems. To avoid the complexity in OFDM receiver design for ICI eliminations, the OFDM system parameters such as symbol duration, signal bandwidth, and the number of subcarriers should be chosen appropriately. This paper aims to propose a process of HST-OFDM system performance investigation to determine these parameters in order to enhance spectral efficiency and meet a given quality-of-service (QoS) level. The signal-to-­interference-­plus-­noise ratio (SINR) has been used as a figure of merit to analyze the system performance instead of signal-to-noise ratio (SNR) as most of recent research studies. Firstly, using the non-stationary geometry-based stochastic HST channel model, the SINR of each subcarrier has been derived for different speeds of the train, signal bandwidths, and number of subcarriers. Consequently, the system capacity has been formulated as the sum of all the single channel capacity from each sub-carrier. The constraints on designing HST-OFDM system parameters have been thoughtfully analyzed using the obtained expressions of SINR and capacity. Finally, by analyzing the numerical results, the system parameters can be found for the design of HST-OFDM systems under different speeds of train. The proposed process can be used to provide hints to predict performance of HST communication systems before doing further high cost implementations as hardware designs

Drama with Unique Setting and Profession based on the Point of View of Korean Drama Connoisseurs

This article aims to discuss K-Drama with a unique work profession background through the abstinence point of k-drama fans. The modern Korean entertainment landscape would not be complete without K-drama. Millions of people around the world enjoy watching Korean dramas. Many parallels are made between the characters, allowing viewers to gain a better understanding of Korean culture. K-drama fans will be paired with Korean drama works to write here. They are not your ordinary doctors, lawyers or professors, but people from all walks of lif

Requirements for information technology application competence for Vietnam agro-forestry students in the time of the 4th technology revolution

The professional work of today's agricultural and forestry engineers is changing dramatically under the impact of the 4th industrial revolution. In that context, the competence to apply information technology (IT) is one of the core and significant competencies. Therefore, in order for training products to meet the needs of society, one of the problems that training facility for agriculture and forestry industry need to solve is to clearly identify the basic requirements for agro-forestry graduates to meet the basic requirements of IT application competence. Based on theoretical and practical research on the IT application competence of each job position and the trend of employment change in the 4.0 period, the article presents the levels of IT application competence in the agro-forestry industry. On the basis of test results and opinions of experts and employers, the article has proposed the components and required levels of IT application competence for agro-forestry students. The research results, in addition to providing information on the current state of students' IT application competence, are also a good reference source for agro-forestry training institutions to set learning outcomes, develop training programs, and innovate new training methods to promptly provide high-quality human resources for the agro-forestry industry in the context of the 4th industrial revolution

Competence framework of information technology for students of Thai Nguyen University of Agriculture and Forestry

Currently, with the positive impact of information technology (IT), the world’s agriculture is gradually shifting from the traditional agricultural model to the digital agricultural model, creating high productivity, increasing the product value and labor productivity. However, the agriculture with applied digital also requires laborers to be capable of applying IT in the agricultural sector. On the basis of theoretical research, output standards from bachelor training programs in the field of agriculture in the world and Vietnam, along with practical investigation results, the article focuses on two main contents: clarify the content of IT application capacity of a student in the field of agriculture and forestry; building a competence framework and assessment criteria for IT application competence for students in the field of agriculture and forestry. The results of the article are documents for Thai Nguyen University of Agriculture and Forestry as well as training institutions for bachelors and engineers in agriculture and forestry to refer to in the process of developing training programs, assessing outcomes for students, as well as innovating training methods towards developing learners’ capacity

Status of the shore area from Tiengiang to Camau: causes of accumulation and erosion

The paper presents some results of the research programs which had been performed during 1996-1999 (“Studying of river-sea interaction in the mouth of Tien river” and KHCN.06.08). Based on these results the morphological schemes of the shore areas from Tiengiang to Camau were compiled; causes and mechanics of accumulation and erosion were also determined. These results may be used as scientific basis for forecasting the development of the shoreline, it will contribute to the management, protection and reasonable exploitation the shore areas