619 research outputs found
Advanced Space-Time Coding: Near-Capacity Sphere-Packing, Multi-Functional MIMOs and Cooperative Space-Time Processing
No full textsj-docx-1-smo-10.1177_20503121221146065 – Supplemental material for Knowledge and awareness toward surgical treatment of epilepsy among medical students at Umm Al-Qura University
No full textSupplemental material, sj-docx-1-smo-10.1177_20503121221146065 for Knowledge and awareness toward surgical treatment of epilepsy among medical students at Umm Al-Qura University by Rami Algahtani, Qamar ALhothaly, Omniyh Fatani, Asmaa Alsaeigh, Raghd Alabdullah, Amal Alamri, Abdullah Tawakul and Jihad Muglan in SAGE Open Medicine</p
guidelines and the cochrane handbook for systematic reviews of interventions
No full textBackground: Sleep bruxism (SB) and obstructive sleep apnea syndrome (OSAS) are two sleep-related conditions that have been associated with significantly conflicting results in literature. Understanding the prevalence of bruxism among OSA patients is crucial for identifying possible comorbidities and optimising treatment strategies. Objective: This systematic review aimed at analysing the prevalence of SB in OSAS sufferers and understanding the association between the two. Methods: Five online databases were searched for relevant articles in accordance with the PRISMA guidelines for conduction of systematic reviews. Studies reporting the prevalence of bruxism in OSAS patients and diagnosed through clinical assessments or polysomnography were included. Data extraction and quality assessment were performed independently by two reviewers. Methodological quality of the included studies was assessed using Risk of Bias In Non-randomised Studies of Interventions (ROBINS-I). Results: A thorough search of literature yielded only two studies were eligible for this review. SB was found to be significantly present in the OSAS group. Despite methodological variations, the majority of studies reported higher rates of bruxism in OSAS patients compared to the general population or control groups. Conclusion: The results of this systematic review point to a significant association between bruxism and obstructive sleep apnea. Further research is required to determine a more precise prevalence rate and investigate the potential therapeutic implications of the bruxism-OSAS association that uses a standardised assessment techniques and larger sample sizes
sj-pdf-2-eso-10.1177_23969873231201715 – Supplemental material for Endovascular therapy versus best medical management for isolated posterior cerebral artery occlusion: A systematic review and meta-analysis
No full textSupplemental material, sj-pdf-2-eso-10.1177_23969873231201715 for Endovascular therapy versus best medical management for isolated posterior cerebral artery occlusion: A systematic review and meta-analysis by Ahmed Alkhiri, Aser F Alamri, Abdullah R Alharbi, Ahmed A Almaghrabi, Nayef Alansari, Abdulelah A Niaz, Basil A Alghamdi, Amrou Sarraj, Adel Alhazzani and Fahad S Al-Ajlan in European Stroke Journal</p
Near-capacity wireless transceivers and cooperative communications in the MIMO era: evolution of standards, waveform design, and future perspectives
Get PDFClassic Shannon theory suggests that the achievable channel capacity increases logarithmically with the transmit power. By contrast, the MIMO capacity increases linearly with the number of transmit antennas, provided that the number of receive antennas is equal to the number of transmit antennas. With the further proviso that the total transmit power is increased proportionately to the number of transmit antennas, a linear capacity increase is achieved upon increasing the transmit power, which justifies the spectacular success of MIMOs. Hence we may argue that MIMO-aided transceivers and their cooperation-assisted distributed or virtual MIMO counterparts constitute power-efficient solutions. In a nutshell, since the conception of GSM in excess of three orders of magnitude bit-rate improvements were achieved in three decades, which corresponds to about a factor ten for each decade, because GSM had a data rate of 9.6 Kb/s, while HSDPA is capable of communicating at 13.7 Mb/s. However, the possible transmit power reductions remained more limited, even when using the most advanced multistage iterative detectors, since the required received signal power has not been reduced by as much as 30 dB. This plausible observation motivates the further research of advanced cooperation-aided wireless MIMO transceivers, as detailed in this treatis
Near-Capacity Three-Stage Turbo Detection of Irregular Convolutional Coded Joint Sphere-Packing Modulation and Space-Time Coding
No full textsj-pdf-1-eso-10.1177_23969873231201715 – Supplemental material for Endovascular therapy versus best medical management for isolated posterior cerebral artery occlusion: A systematic review and meta-analysis
No full textSupplemental material, sj-pdf-1-eso-10.1177_23969873231201715 for Endovascular therapy versus best medical management for isolated posterior cerebral artery occlusion: A systematic review and meta-analysis by Ahmed Alkhiri, Aser F Alamri, Abdullah R Alharbi, Ahmed A Almaghrabi, Nayef Alansari, Abdulelah A Niaz, Basil A Alghamdi, Amrou Sarraj, Adel Alhazzani and Fahad S Al-Ajlan in European Stroke Journal</p
sj-docx-2-eso-10.1177_23969873241237312 – Supplemental material for Intravenous alteplase in minor nondisabling ischemic stroke: A systematic review and meta-analysis
No full textSupplemental material, sj-docx-2-eso-10.1177_23969873241237312 for Intravenous alteplase in minor nondisabling ischemic stroke: A systematic review and meta-analysis by Adel Alhazzani, Fahad S Al-Ajlan, Ahmed Alkhiri, Ahmed A Almaghrabi, Aser F Alamri, Basil A Alghamdi, Hassan K Salamatullah, Abdullah R Alharbi, Maher B Almutairi, Hui-Sheng Chen, Yongjun Wang, Mohamad Abdalkader, Guillaume Turc, Pooja Khatri and Thanh N Nguyen in European Stroke Journal</p
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