This study examines common errors in paragraph writing among undergraduate students at Ho Chi Minh City University of Industry and Trade (HUIT), Vietnam, within the context English as a Foreign Language (EFL) education. Employing mixed-methods approach, research identifies error types, explores their causes from student lecturer perspectives, proposes instructional strategies to enhance proficiency. Data were collected via surveys, interviews, analysis written assignments HUIT enrolled...

In the era of 5G and beyond, mobile devices usually can access several heterogeneous wireless networks (e.g., Wi-Fi 5G). To simultaneously efficiently utilize accessible network resources, muli path transport protocols, such as MPTCP MPQUIC, have shown much potential. these scheduling is one critical processes to ensure performance multipath transmission. Although there been many proposed schedulers in literature, they not performed well networks, especially when conditions vary (i.e.,...

Machine translation is shifting to an end-to-end approach based on deep neural networks. The state of the art achieves impressive results for popular language pairs such as English - French or Chinese. However Vietnamese shortage parallel corpora and expensive hyper-parameter search present practical challenges neural-based approaches. This paper highlights our efforts improving English-Vietnamese translations in two directions: (1) Building largest open corpus date, (2) Extensive...

Assembly line balancing (ALB) is the problem of assigning a set tasks to workstations, such that precedence relations among are satisfied optimize different objectives. ALB an important task for garment industry. When product model changed, assembly must be balanced again. There huge investigations on including objectives as minimizing number balance delay and cycle time. In this paper, objective minimize workstations given time with respect some constraints order tasks, machine types in...

Long-reach hybrid wavelength-division multiplexing (WDM) and time-division (TDM) passive optical networks (PONs) allow deploying access for remote service areas with thousands of customers. Typically, several long fiber cables are run between the central office (CO) provider each area in order to feed data flows. In area, array waveguide gratings (AWGs) multiplex demultiplex wavelengths; then, splitters split wavelengths serve multiple network units. This paper proposes use a mesh topology...

Multipath QUIC (MPQUIC), an emerging multipath transport protocol (MTP) that inherits the advantages of canonical TCP (MPTCP) and widespread QUIC, potentially plays a vital role in 5G beyond. MPQUIC can exploit multiple networks (e.g., Wi-Fi, LTE, 5G) on mobile device to boost quality services while efficiently utilizing network resources. In MPQUIC, scheduler, which is charge concurrently scheduling data transmission several paths, largely impacts protocols' performance, especially dynamic...

Wireless power transfer technology is emerging as a reliable solution for energizing the sensors by deploying mobile charger (MC) to recharge sensor. However, designing an optimal charging path MC challenging because of uncertainties arising in networks. The energy consumption rate may fluctuate significantly due unpredictable changes network topology, such node failures. These also lead shifts importance each sensor, which are often assumed be same existing works. We address these...

Many optimization problems such as Maximum Independent Set, Clique, Minimum Clique Cover and Induced Matching are NP-hard on general graphs. However, they could be solved in polynomial time when restricted to some particular graph classes comparability co-comparability classes. In this paper, we summarize the latest algorithms solving classical over years. Moreover, apply -redundant technique obtain linear O(j j) which find a interval circular-arc Inspired of these results, have proposed...

In the garment industry, assembly line balancing is one of most significant tasks. To make a product, manufacturing technique called utilized, where components are assembled and transferred from workstation to until final finished. Assembly should always be as balanced possible in order maximize efficiency. Different types problems were introduced along with many proposed solutions. this paper, we focus on an problem upper bound number workers given, tasks have grouped into workstations so...

Air pollution is a critical issue in cities developing countries like Hanoi, Vietnam. An efficient and comprehensive air quality monitoring system may reduce the harmfulness improve cities' sustainability. This paper presents novel approach to realize such which sensors are mobile. More specifically, we introduce three-tier architecture for system, including sensing, communication, application layers. Initially, discuss each layer concept bypass limitation of traditional stationary system....

We explore the weak avoidance of barred patterns in permutations introduced recently by J.-L. Baril. give its general properties comparison with pattern avoidance. By showing explicit bijections, we revisit Dyck paths no peak at height p, ud…du and Motzkin via weakly avoiding Sn(132).

In this paper, we focus on broadening the monitoring area of a mobile air quality system, in which sensors mounted buses. particular, investigate optimal buses to place and timings maximize number monitored critical regions. We mathematically formulate targeted problem. Then, leverage greedy approach propose polynomial-time <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\frac{e-1}{2e-1}$</tex> approximation algorithm. use data real bus routes...

So far, air quality monitoring is usually handled by stations located at fixed locations. However, due to the cost of installation, deployment, and operation, number deployed often tiny; thus, monitored area limited. To deal with this problem, in paper, we consider a mobile system that relies on sensors mounted buses broaden area. Specifically, investigate optimal place as well timings maximize critical regions are monitored. We mathematically formulate targeted problem prove its...

Along with the development of Fiber-to-the-Home (FTTH) networks, Passive Optical Network (PON) is largely studied. PON technology known as optical access network that uses fiber optic and passive devices to connect service providers end users. Some models for deploying have been proposed. In this paper we focus on mesh star topology hybrid WDM-TDM PON. We propose three design methods two compare them each other in order see advantage topolgy links between AWGs. These are also compared...

We first design an 𝒪( n 2 ) solution for finding a maximum induced matching in permutation graphs given their models, based on dynamic programming algorithm with the aid of sweep line technique. With support disjoint-set data structure, we improve complexity to m+ n). Consequently, extend this result give n) same problem trapezoid graphs. By combining our algorithms current best graph identification algorithms, can solve MIM and linear time, respectively. Our results are far better than...

With the development and commercialization of new mobile network generations such as 5G beyond, future communications are shifting from traditional single-path paradigm to multipath transport protocols MPTCP MPQUIC. One most critical issues in dealing with transmission is appropriately scheduling pathways order guarantee QoS. Despite fact that tremendous effort has been put into developing algorithms, existing approaches suffer several limitations when network's dynamicity, including...

Mobile sink problems in wireless sensor networks (WSNs) have gained increasing worldwide attention recent years because of a great number applications and advantages. In this paper, we proposed problem model consisting WSN with mobile (MS) set fixed targets which the MS needs to collect information. case, just receives information from by transmitting it through sensors. The objective is determine location trajectory optimize sensors that need be set, thereby reducing cost build WSNs...

Mục đích của bài viết là nhận diện các yếu tố ảnh hưởng đến kết quả sinh kế cư dân vùng hạn mặn ở đồng bằng sông Cửu Long. Số liệu nghiên cứu được thu thập từ 300 nông hộ Sóc Trăng, Kiên Giang và Trà Vinh với phương pháp chọn mẫu ngẫu nhiên, mỗi tỉnh lựa 02 huyện 01 xã. Phương phân tích hồi quy đa biến dùng trong này nhằm xem xét mặn. Kết cho thấy, nhập một những có nhiều Vốn vay mối quan hệ ngược chiều, khi đó đất sản xuất nghiệp, số nguồn nhập, kinh nghiệm, hỗ trợ địa phương, tiện cùng...

Wireless charging is a promising solution to resolving the energy constraint of wireless sensor networks. In rechargeable network, mobile chargers (MCs) move around network and charge nodes. This study focuses on optimal deployment MCs perpetually maintain operations. More specifically, we aim determine minimum number their schedule guarantee perpetual lifetime To this end, first mathematically formulate targeted problem. We then propose dynamic programming-based algorithm MCs. Since...

We introduce a new concept of permutation avoidance pattern called hatted pattern, which is natural generalization the barred pattern. show growth rate class permutations avoiding in comparison to prove that Dyck paths with no peak at height $p$, $ud... du$ and Motzkin are counted by $\s_n(132)$ showing explicit bijections. As result, direct bijection between without two consecutive adjacent numbers given. These also represented on generating tree based Enumerative Combinatorial Object (ECO) method.

Long-reach hybrid WDM-TDM PONs connect far away service areas to center offices of providers. Typically, multiples fiber cables run from the office side each area in order feed with data flows. We believe that mesh topology allows AWGs feeding other and consequently less need be between areas. In this paper, we show some typical cases where connections are useful. propose also an efficient algorithm based on Local improvement approach for designing survivable long-reach is allowed. The...

Let G = (V, E) be an undirected graph, where V is the vertex set and E edge set. A subset M of induced matching if a no two edges in are joined by edge. Finding maximum NP-Hard problem on general graphs, even bipartite graphs. However, this can solved polynomial time some special graph classes such as weakly chordal, interval circular-arc In paper, we introduce algorithm permutation graphs with O(|V |k(G) log log(|V|)) worst case complexity O(|V|√|V| log(|V |)) average complexity, k(G)...