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QoS-Driven Video Uplinking in NOMA-Based IoT
[article]
2021
arXiv
pre-print
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In recent years, with the explosive growth of visual sensors and a large number of related video applications in Internet of Things (IoT), massive video data is generated by IoT devices. Since the volume of video data is far greater than traditional data in IoT, it is challenging to ensure high Quality of Service (QoS) for video uplinking in IoT. To address this challenge, we integrate non-orthogonal multiple access (NOMA) and scalable video coding (SVC) in IoT. To improve the video quality, we
arXiv:2101.06028v1
fatcat:nxyzpidbizhyfpr33j3oyomiyy
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... formulate a power allocation problem to maximize the average QoS in the proposed integrated system. Due to that the problem is non-convex, we transform it into a monotonic problem based on its hidden monotonicity. Then a power allocation algorithm based on polyblock outer approximation is proposed to solve the problem effectively. Finally, simulation results demonstrate that the proposed algorithm outperforms existing OMA and NOMA based schemes for video uplinking in IoT in terms of QoS and energy efficiency.
Hongmei Li, Advertising and Consumer Culture in China,
2017
China Perspectives
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AUTHOR RUOYUN BAI Ruoyun Bai is Associate Professor of Media Studies at the Department of Arts, Culture, and Media (UTSC) of the University of Toronto (rbai@utsc.utoronto.ca). ...
doi:10.4000/chinaperspectives.7425
fatcat:solozlp4cfdyjnkevacovkiemu
Combining the benefits of 3D acquisitions and spiral readouts in VASO fMRI
2022
Zenodo
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VASO fMRI has been shown to provide benefits compared to the commonly used BOLD contrast. Previous work has also shown the benefits of using spiral readouts compared to Cartesian ones. In this work, we explore the benefits of 3D stack of spirals readouts for VASO and compare it with the current state of the art 3D EPI readouts for VASO fMRI. The sequence implementation is done using Pulseq, images were reconstructed using gpuNUFFT; functional analysis with an openly available pipeline. We find
doi:10.5281/zenodo.6389564
fatcat:n3helkn2efcp3dfk47iea66i4u
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... hat a tSNR efficiency improvement of a factor of 3 over EPI is achieved using the proposed spiral implementation.
In Vivo Dentate Nucleus Gamma-aminobutyric Acid Concentration in Essential Tremor vs. Controls
2017
Cerebellum
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., Natick, MA, USA) code to calculate the proportion of each type of tissue within each voxel. GABA levels corrected for CSF were obtained using the method described by Chowdhury et al (31) . ...
doi:10.1007/s12311-017-0891-4
pmid:29039117
fatcat:ltxhehilkrgs7kmvmkyguilyma
Statistical Characteristics and Environmental Conditions of the Warm-Season Severe Convective Events over North China
2020
Atmosphere
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Based on severe weather reports, surface precipitation observations, surface routine observations, and the European Center for Medium-Range Weather Forecasts ERA5 reanalysis dataset during the warm seasons (May–September) of 2011–2018 over North China, this paper analyzes the statistical characteristics and environmental conditions of three types of severe convective events. Results are compared between events with different altitudes (i.e., mountains and plains), severities (i.e., ordinary and
doi:10.3390/atmos12010052
fatcat:j6ocgq5lebf6bott5g2x2qmkya
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... significant), and months. Hail and thunderstorm high winds (THWs) are more common over the mountains whereas short-duration heavy rainfall (SDHR) is more frequent over the plains. The occurrence frequency of severe convective events exhibits distinct monthly and diurnal variations. Analyses of the environmental parameters provide reference for the potential forecasting of severe convective events over this region. Specifically, the 850–500 hPa temperature lapse rate (LR85), pseudo-equivalent potential temperature at 500 hPa (thetase500), and precipitable water (PW) are skillful in distinguishing hail and THW environments from SDHR environments, and thetase500 is useful in discriminating between hail and THW environments. The convective environments over the plains are characterized by significantly higher (lower) PW (LR85) compared with mountains. The skill of these parameters in forecasting the severity of the convective hazards is limited. Probability distributions in the two parameters space indicate that the occurrence of significant hail requires both higher most unstable convective available potential energy (MUCAPE) and stronger 0–6 km bulk wind shear (SHR6) compared with ordinary hail. Compared with ordinary THWs, the significant THWs over the mountains depend more on the SHR6 whereas those over the plains rely more on the MUCAPE. The significant SDHR events over the plains tend to occur under a variety of instability conditions. The thermodynamic parameters (i.e., MUCAPE, thetase500, and downdraft convective available potential energy), and PW are significantly higher in July–August, whereas the LR85 and vertical wind shear are apparently higher in May, June and September.
Seed plant features, distribution patterns, diversity hotspots, and conservation gaps in Xinjiang, China
2018
Nature Conservation
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It was well known that complementarity (Vane-Wright et al. 1991) plays an important role in biodiversity hotspot identification (Zhang and Ma 2008) . ...
doi:10.3897/natureconservation.27.23728
fatcat:727vihfblve5dc5wkcfp7lgawq
Effect of Primidone on Dentate Nucleus γ-Aminobutyric Acid Concentration in Patients With Essential Tremor
2016
Clinical neuropharmacology
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., Natick, MA, USA) code, incorporated with statistical parametric mapping (SPM8, Wellcome Department of Imaging Neuroscience, London, UK). ...
doi:10.1097/wnf.0000000000000127
pmid:26757316
pmcid:PMC4764876
fatcat:ibbrvvfurner3acgrflzvayrqu
Thalamic GABA levels and occupational manganese neurotoxicity: Association with exposure levels and brain MRI
2018
Neurotoxicology
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The percentages of GM, WM and CSF for each VOI were then calculated from the tissue probability maps with a home-made Matlab (The MathWorks, Natick, MA) code. ...
doi:10.1016/j.neuro.2017.08.013
pmid:28873337
pmcid:PMC5891096
fatcat:2l2ymoetnfhj7j4o45pcxzlg7e
Patterns of maximum height of endemic woody seed plants in relation to environmental factors in China
2018
Ecosphere
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Ruoyun Yu and Hua Liu are co-first authors and contributed equally to this work. ...
At present, discovering the mechanisms that underlie the distribution of and variation in functional traits along environmental gradients is a major issue in ecology (Liu and Ma 2015) . ...
doi:10.1002/ecs2.2319
fatcat:miwfwmhoxfgvtig3tpserxdrx4
Reproducibility and effect of tissue composition on cerebellar γ-aminobutyric acid (GABA) MRS in an elderly population
2015
NMR in Biomedicine
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., Natick, MA, USA) incorporated with statistical parametric mapping (SPM8, Wellcome Department of Imaging Neuroscience, London, United Kingdom). ...
doi:10.1002/nbm.3381
pmid:26314380
pmcid:PMC4594865
fatcat:e2ao3eg3ubahjayqun7dupwun4
On the Extreme Rainfall Event of 7 May 2017 Over the Coastal City of Guangzhou. Part I: Impacts of Urbanization and Orography
2020
Monthly Weather Review
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In this study, a nocturnal extreme rainfall event induced by the urban heat island (UHI) effects of the coastal city of Guangzhou in South China on 7 May 2017 is examined using observational analyses and 18-h cloud-permitting simulations with the finest grid size of 1.33 km and the bottom boundary conditions nudged. Results show that the model reproduces convective initiation on Guangzhou's downstream side (i.e., Huashan), where a shallow thermal mesolow is located, the subsequent back-building
doi:10.1175/mwr-d-19-0212.1
fatcat:pmu4lozgbrds5ayssmcytwkhli
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... of convective cells as a larger-scale warm-moist southerly flow interacts with convectively generated cold outflows, and their eastward drifting and reorganization into a localized extreme-rain-producing storm near Jiulong under the influences of local orography. In particular, the model produces the maximum hourly, 3- and 12-hourly rainfall amounts of 146, 315 and 551 mm, respectively, at nearly the right location compared to their corresponding observed extreme amounts of 184, 382 and 542 mm. In addition, the model reproduces an intense meso-γ-scale vortex associated with the extreme-rain-producing Jiulong storm, as also captured by Doppler radar, with organized updrafts along cold outflow boundaries over a semicircle. A comparison of sensitivity and control simulations indicates that despite the occurrence of heavier rainfall amounts without the UHI effects than those without orography, the UHI effects appear to account directly for the convective initiation and heavy rainfall near Huashan, and indirectly for the subsequent formation of the Jiulong storm, while orography plays an important role in blocking cold outflows and enhancing cool pool strength for the sustained back-building of convective cells over the semicircle, thereby magnifying rainfall production near Jiulong.
The relationship between inflammation and neurocognitive dysfunction in obstructive sleep apnea syndrome
2020
Journal of Neuroinflammation
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Obstructive sleep apnea syndrome (OSAS), a state of sleep disorder, is characterized by repetitive apnea, chronic hypoxia, oxygen desaturation, and hypercapnia. Previous studies have revealed that intermittent hypoxia (IH) conditions in OSAS patients elicited neuron injury (especially in the hippocampus and cortex), leading to cognitive dysfunction, a significant and extraordinary complication of OSAS patients. The repeated courses of airway collapse and obstruction in OSAS patients resulted in
doi:10.1186/s12974-020-01905-2
pmid:32738920
fatcat:pjv5a7ct7bc3xaycusgdtmw7ay
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... apnea and arousal during sleep, leading to IH and excessive daytime sleepiness (EDS) and subsequently contributing to the development of inflammation. IH-mediated inflammation could further trigger various types of cognitive dysfunction. Many researchers have found that, besides continuous positive airway pressure (CPAP) treatment and surgery, anti-inflammatory substances might alleviate IH-induced neurocognitive dysfunction. Clarifying the role of inflammation in IH-mediated cognitive impairment is crucial for potentially valuable therapies and future research in the related domain. The objective of this article was to critically review the relationship between inflammation and cognitive deficits in OSAS.
Striatal and thalamic GABA level concentrations play differential roles for the modulation of response selection processes by proprioceptive information
2015
NeuroImage
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The selection of appropriate responses is a complex endeavor requiring the integration of many different sources of information in fronto-striatal-thalamic circuits. An often neglected but relevant piece of information is provided by proprioceptive inputs about the current position of our limbs. This study examines the importance of striatal and thalamic GABA levels in these processes using GABA-edited magnetic resonance spectroscopy (GABAMRS) and a Simon task featuring proprioception-induced
doi:10.1016/j.neuroimage.2015.06.066
pmid:26142275
pmcid:PMC4589476
fatcat:ob4nvl4pkjb63nwsj6evkgq26m
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... terference in healthy subjects. As a possible model of deficits in the processing of proprioceptive information, we also included Parkinson's disease (PD) patients in this study. The results show that proprioceptive information about unusual postures complicates response selection processes in controls, but not in PD patients. The well-known deficits of PD patients in processing proprioceptive information can turn into a benefit when altered proprioceptive information would normally complicate response selection processes. Striatal and thalamic GABA levels play dissociable roles in the modulation of response selection processes by proprioceptive information: Striatal GABA levels seem to be important for the general speed of responding, most likely because striatal GABA promotes response selection. In contrast, the modulation of response conflict by proprioceptive information is closely related to thalamic GABA concentrations with higher concentration being related to a smaller response conflict effect. The most likely explanation for this finding is that the thalamus is involved in the integration of sensorimotor,
TRV–GFP: a modified Tobacco rattle virus vector for efficient and visualizable analysis of gene function
2013
Journal of Experimental Botany
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It is, however, less effective in some non-Solanaceae plants crops, such as rose (Ma et al., 2008) , which is an important economic and cultural ornamental crop throughout the world. ...
., 2010) , rose flower (Ma et al., 2008) , strawberry fruit (Jia et al., 2011) , California poppy (Wege et al., 2007) , Jatropha curcas (Ye et al., 2009) , and Mirabilis jalapa (Singh et al., 2012 ...
doi:10.1093/jxb/ert381
pmid:24218330
pmcid:PMC3883300
fatcat:e54ctdnolzfzfceoisw6svhvva
Blood and Bronchoalveolar Lavage Fluid Metagenomic Next-Generation Sequencing in Pneumonia
2020
Canadian Journal of Infectious Diseases and Medical Microbiology
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Background. Metagenomic next-generation sequencing (mNGS) has made a revolution in the mode of pathogen identification. We decided to explore the diagnostic value of blood and bronchoalveolar lavage fluid (BALF) as mNGS samples in pneumonia. Methods. We retrospectively reviewed 467 mNGS results and assessed the diagnostic performance of paired blood and BALF mNGS in 39 patients with pneumonia. Results. For bacteria and fungi, 16 patients had culture-confirmed pathogen diagnosis, while 13
doi:10.1155/2020/6839103
pmid:32879643
pmcid:PMC7448216
fatcat:mbhdewuq4rdsvo2nb77drw2jve
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... s were culture-negative. BALF mNGS was more sensitive than blood mNGS (81.3% vs. 25.0%, p=0.003), and the specificity in BALF and blood mNGS was not statistically significant different (76.9% vs. 84.6%, p=0.317). For 10 patients without culture test, treatments were changed in 2 patients. For viruses, Epstein-Barr virus was positive in blood mNGS in 9 patients. Human adenovirus was detected in both BALF and blood mNGS in 3 patients. Conclusion. Our study suggests that BALF mNGS is more sensitive than blood mNGS in detecting bacteria and fungi, but blood also has advantages to identify the pathogens of pneumonia, especially for some viruses.
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