Designing reasonable MAC scheduling strategies is an important means to ensure transmission quality in wireless sensor networks (WSNs). When there exist multiple available routes from the source to the destination, it is necessary to combine a data traffic allocation mechanism and design a multi-path MAC scheduling scheme in order to ensure QoS. This paper develops a multi-path resource allocation method for multi-channel wireless sensor networks, which uses random-access technology to complete MAC scheduling and selects the transmission path for each packet according to the probability. Through theoretical analysis and simulation experiments, it can be found that the proposed strategy can provide a reliable throughput capacity region. Meanwhile, due to the use of random-access technology, the computational complexity of the proposed algorithm can be independent of the number of links and channels.
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http://dx.doi.org/10.3390/e25081197 | DOI Listing |
J Cardiol Cases
October 2024
Department of Cardiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Unlabelled: Mitral annular calcification (MAC) is a chronic degenerative process involving the fibrous support structure of the mitral valve. The prevalence of this condition significantly increases with age, and is higher in patients with cardiovascular risk factors or end-stage renal disease. However, patients with systemic lupus erythematosus (SLE) may develop atherosclerosis and MAC at a relatively young age.
View Article and Find Full Text PDFSensors (Basel)
December 2024
School of Computer Science, University of South China, Hengyang 421001, China.
In exploiting large propagation delays in underwater acoustic (UWA) networks, the time-domain interference alignment (TDIA) mechanism aligns interference signals through delay-aware slot scheduling, creating additional idle time for improved transmission at the medium access control (MAC) layer. However, perfect alignment remains challenging due to arbitrary delays. This study enhances TDIA by incorporating power allocation into its transmission scheduling framework across the physical and MAC layers, following the cross-layer design principle.
View Article and Find Full Text PDFSci Rep
December 2024
National University of Defense Technology, Changsha, Hunan, China.
In-band full-duplex communication has the potential to double the wireless channel capacity. However, how to efficiently transform the full-duplex gain at the physical layer into network throughput improvement is still a challenge, especially in dynamic communication environments. This paper presents a reinforcement learning-based full-duplex (RLFD) medium access control (MAC) protocol for wireless local-area networks (WLANs) with full-duplex access points.
View Article and Find Full Text PDFBMC Anesthesiol
December 2024
Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou, Hebei, China.
Objectives: To explore the effect of mild cognitive impairment (MCI) and MCI with sleep disorders on the potency of sevoflurane anesthesia in the elderly.
Design: Prospective study methods. Dixon up-and-down methods.
Burns
December 2024
Department of Neurology, Hospital General de Zona #2, IMSS, OOAD Aguascalientes, Av. los Conos No. 102, 20190 Aguascalientes, AGS, Mexico. Electronic address:
Background: Pediatric burn injuries are a significant public health issue in low- and middle-income countries, leading to substantial morbidity and mortality. This study aimed to evaluate the efficacy of the No+Quema2 educational program, implemented in Aguascalientes, Mexico, in preventing burn injuries among children under nine years old.
Methods: The No+Quema2 program, initiated in 2014, included educational courses for children, training for health workers, and specialized care for children with burn sequelae.
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