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QoS-Driven Video Uplinking in NOMA-Based IoT [article]

Pengfei Ma, Hancheng Lu, Ming Zhang, Jinxue Liu, Ruoyun Chen
2021 arXiv   pre-print
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
more » ... 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.
arXiv:2101.06028v1 fatcat:nxyzpidbizhyfpr33j3oyomiyy

Hongmei Li, Advertising and Consumer Culture in China,

Ruoyun Bai
2017 China Perspectives  
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

Alejandro Monreal, Ruoyun Emily Ma, Renzo Huber, Denizhan Kurban, Nicolas Boulant, Benedikt A Poser
2022 Zenodo  
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
more » ... hat a tSNR efficiency improvement of a factor of 3 over EPI is achieved using the proposed spiral implementation.
doi:10.5281/zenodo.6389564 fatcat:n3helkn2efcp3dfk47iea66i4u

In Vivo Dentate Nucleus Gamma-aminobutyric Acid Concentration in Essential Tremor vs. Controls

Elan D. Louis, Nora Hernandez, Jonathan P. Dyke, Ruoyun E. Ma, Ulrike Dydak
2017 Cerebellum  
., 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

Ruoyun Ma, Shuanglei Feng, Shuanglong Jin, Jianhua Sun, Shenming Fu, Shijun Sun, Hong Han
2020 Atmosphere  
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
more » ... 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.
doi:10.3390/atmos12010052 fatcat:j6ocgq5lebf6bott5g2x2qmkya

Seed plant features, distribution patterns, diversity hotspots, and conservation gaps in Xinjiang, China

Jihong Huang, Canran Liu, Zhongjun Guo, Keping Ma, Runguo Zang, Yi Ding, Xinghui Lu, Jiping Wang, Ruoyun Yu
2018 Nature Conservation  
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

Elan D. Louis, Nora Hernandez, Jonathan P. Dyke, Ruoyun Ma, Ulrike Dydak
2016 Clinical neuropharmacology  
., 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

Ruoyun E. Ma, Eric J. Ward, Chien-Lin Yeh, Sandy Snyder, Zaiyang Long, Fulya Gokalp Yavuz, S. Elizabeth Zauber, Ulrike Dydak
2018 Neurotoxicology  
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

Ruoyun Yu, Hua Liu, Jihong Huang, Xinghui Lu, Runguo Zang, Keping Ma, Zhongjun Guo, Yi Ding, Huan Li, Yibo Liu, Qian Li
2018 Ecosphere  
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

Zaiyang Long, Jonathan P. Dyke, Ruoyun Ma, Chaorui C. Huang, Elan D. Louis, Ulrike Dydak
2015 NMR in Biomedicine  
., 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

Jinfang Yin, Da-Lin Zhang, Yali Luo, Ruoyun Ma
2020 Monthly Weather Review  
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
more » ... 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.
doi:10.1175/mwr-d-19-0212.1 fatcat:pmu4lozgbrds5ayssmcytwkhli

The relationship between inflammation and neurocognitive dysfunction in obstructive sleep apnea syndrome

Xiangming Liu, Yiming Ma, Ruoyun Ouyang, Zihang Zeng, Zijie Zhan, Huanhuan Lu, Yanan Cui, Zhongshang Dai, Lijuan Luo, Chenjie He, Herui Li, Dandan Zong (+1 others)
2020 Journal of Neuroinflammation  
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
more » ... 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.
doi:10.1186/s12974-020-01905-2 pmid:32738920 fatcat:pjv5a7ct7bc3xaycusgdtmw7ay

Striatal and thalamic GABA level concentrations play differential roles for the modulation of response selection processes by proprioceptive information

Shalmali Dharmadhikari, Ruoyun Ma, Chien-Lin Yeh, Ann-Kathrin Stock, Sandy Snyder, S. Elizabeth Zauber, Ulrike Dydak, Christian Beste
2015 NeuroImage  
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
more » ... 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,
doi:10.1016/j.neuroimage.2015.06.066 pmid:26142275 pmcid:PMC4589476 fatcat:ob4nvl4pkjb63nwsj6evkgq26m

TRV–GFP: a modified Tobacco rattle virus vector for efficient and visualizable analysis of gene function

Ji Tian, Haixia Pei, Shuai Zhang, Jiwei Chen, Wen Chen, Ruoyun Yang, Yonglu Meng, Jie You, Junping Gao, Nan Ma
2013 Journal of Experimental Botany  
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

Xu Chen, Shuizi Ding, Cheng Lei, Jieli Qin, Ting Guo, Danhui Yang, Min Yang, Jie Qing, Wenlong He, Min Song, Yan Zhang, Huihui Zeng (+8 others)
2020 Canadian Journal of Infectious Diseases and Medical Microbiology  
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
more » ... 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.
doi:10.1155/2020/6839103 pmid:32879643 pmcid:PMC7448216 fatcat:mbhdewuq4rdsvo2nb77drw2jve
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