Готові списки джерел за темами / SD-RAN

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Добірка наукової літератури з теми "SD-RAN"

Автор: Grafiati

Опубліковано: 23 вересня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "SD-RAN"

Zaidi, Zainab, Vasilis Friderikos, and Muhammad Ali Imran. "Future RAN Architecture: SD-RAN Through a General-Purpose Processing Platform." IEEE Vehicular Technology Magazine 10, no. 1 (March 2015): 52–60. http://dx.doi.org/10.1109/mvt.2014.2380632.

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Gingell, Luke F., and Janna R. McLean. "A Protamine Knockdown Mimics the Function of Sd in Drosophila melanogaster." G3: Genes|Genomes|Genetics 10, no. 6 (April 22, 2020): 2111–15. http://dx.doi.org/10.1534/g3.120.401307.

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Segregation Distorter (SD) is an autosomal meiotic drive system found worldwide in natural populations of Drosophila melanogaster. This gene complex induces the preferential and nearly exclusive transmission of the SD chromosome in SD/SD+ males. This selfish propagation occurs through the interplay of the Sd locus, its enhancers and the Rsps locus during spermatid development. The key distorter locus, Sd, encodes a truncated but enzymatically active RanGAP (RanGTPase-activating protein), a key nuclear transport factor in the Ran signaling pathway. When encoded by Sd, RanGAP is mislocalized to the nucleus interior, which then traps Ran inside the nucleus and disrupts nuclear import. As a result of this aberrant nuclear transport, a process known as the histone-to-protamine transition that is required for proper spermatid condensation fails to occur in SD/SD+ males. In this process, sperm-specific protamine proteins enter the spermatid nucleus and replace the formerly chromatin-complexed histones. Previously, we have shown that mutations affecting nuclear import and export can enhance distortion in an SD background, thus verifying that a defect in nuclear transport is responsible for the unequal transmission of chromosomes. Herein, we show that specifically reducing protamines induces distortion in an SD background, verifying that protamines are transported via the RanGAP/GEF pathway and indicating that E(SD) plays a significant and unique role in the process of distortion.

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Barella, Kleyton Arlindo, Vital Paulino Costa, Vanessa Gonçalves Vidotti, Fabrício Reis Silva, Marcelo Dias, and Edson Satoshi Gomi. "Glaucoma Diagnostic Accuracy of Machine Learning Classifiers Using Retinal Nerve Fiber Layer and Optic Nerve Data from SD-OCT." Journal of Ophthalmology 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/789129.

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Purpose. To investigate the diagnostic accuracy of machine learning classifiers (MLCs) using retinal nerve fiber layer (RNFL) and optic nerve (ON) parameters obtained with spectral domain optical coherence tomography (SD-OCT).Methods. Fifty-seven patients with early to moderate primary open angle glaucoma and 46 healthy patients were recruited. All 103 patients underwent a complete ophthalmological examination, achromatic standard automated perimetry, and imaging with SD-OCT. Receiver operating characteristic (ROC) curves were built for RNFL and ON parameters. Ten MLCs were tested. Areas under ROC curves (aROCs) obtained for each SD-OCT parameter and MLC were compared.Results. The mean age was56.5±8.9years for healthy individuals and59.9±9.0years for glaucoma patients (P=0.054). Mean deviation values were −1.4 dB for healthy individuals and −4.0 dB for glaucoma patients (P<0.001). SD-OCT parameters with the greatest aROCs were cup/disc area ratio (0.846) and average cup/disc (0.843). aROCs obtained with classifiers varied from 0.687 (CTREE) to 0.877 (RAN). The aROC obtained with RAN (0.877) was not significantly different from the aROC obtained with the best single SD-OCT parameter (0.846) (P=0.542).Conclusion. MLCs showed good accuracy but did not improve the sensitivity and specificity of SD-OCT for the diagnosis of glaucoma.

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Koutlia, K., R. Ferrús, E. Coronado, R. Riggio, F. Casadevall, A. Umbert, and J. Pérez-Romero. "Design and Experimental Validation of a Software-Defined Radio Access Network Testbed with Slicing Support." Wireless Communications and Mobile Computing 2019 (June 12, 2019): 1–17. http://dx.doi.org/10.1155/2019/2361352.

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Network slicing is a fundamental feature of 5G systems to partition a single network into a number of segregated logical networks, each optimized for a particular type of service or dedicated to a particular customer or application. The realization of network slicing is particularly challenging in the Radio Access Network (RAN) part, where multiple slices can be multiplexed over the same radio channel and Radio Resource Management (RRM) functions shall be used to split the cell radio resources and achieve the expected behaviour per slice. In this context, this paper describes the key design and implementation aspects of a Software-Defined RAN (SD-RAN) experimental testbed with slicing support. The testbed has been designed consistently with the slicing capabilities and related management framework established by 3GPP in Release 15. The testbed is used to demonstrate the provisioning of RAN slices (e.g., preparation, commissioning, and activation phases) and the operation of the implemented RRM functionality for slice-aware admission control and scheduling.

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Pechmann, Cornelia, Connor Phillips, Douglas Calder, and Judith J. Prochaska. "Facebook Recruitment Using Zip Codes to Improve Diversity in Health Research: Longitudinal Observational Study." Journal of Medical Internet Research 22, no. 6 (June 5, 2020): e17554. http://dx.doi.org/10.2196/17554.

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Background Facebook’s advertising platform reaches most US households and has been used for health-related research recruitment. The platform allows for advertising segmentation by age, gender, and location; however, it does not explicitly allow for targeting by race or ethnicity to facilitate a diverse participant pool. Objective This study looked at the efficacy of zip code targeting in Facebook advertising to reach blacks/African Americans and Hispanics/Latinos who smoke daily for a quit-smoking web-based social media study. Methods We ran a general market campaign for 61 weeks using all continental US zip codes as a baseline. Concurrently, we ran 2 campaigns to reach black/African American and Hispanic-/Latino-identified adults, targeting zip codes ranked first by the percentage of households of the racial or ethnic group of interest and then by cigarette expenditure per household. We also ran a Spanish language campaign for 13 weeks, targeting all continental US zip codes but utilizing Facebook’s Spanish language targeting. The advertising images and language were common across campaigns. Costs were compared for advertisement clicks, queries, applications, and participants, and yields were compared for the final three outcomes. We examined outcomes before and after the Cambridge Analytica scandal that broke in March 2018. Finally, we examined 2 promoted Facebook features: lookalike audiences and audience network placement. Results Zip code targeting campaigns were effective for yielding the racial or ethnic groups of interest. The black-/African American–focused versus general market campaign increased black/African American weekly queries (mean 9.48, SD 5.69 vs general market mean 2.83, SD 2.05; P<.001) and applicants (mean 1.11, SD 1.21 vs general market mean 0.54, SD 0.58; P<.001). The Hispanic-/Latino-focused versus general market campaign increased Hispanic/Latino weekly queries (mean 3.10, SD 2.16 vs general market mean 0.71, SD 0.48; P<.001) and applicants (mean 0.36, SD 0.55 vs general market mean 0.10, SD 0.14; P=.001). Cost metrics did not differ between campaigns at generating participants (overall P=.54). Costs increased post- versus prescandal for the black-/African American–focused campaign for queries (mean US $8.51, SD 3.08 vs US $5.87, SD 1.89; P=.001) and applicants (mean US $59.64, SD 35.63 vs US $38.96, SD 28.31; P=.004) and for the Hispanic-/Latino-focused campaign for queries (mean US $9.24, SD 4.74 vs US $7.04, SD 3.39; P=.005) and applicants (mean US $61.19, SD 40.08 vs US $38.19, SD 21.20; P=.001). Conclusions Zip code targeting in Facebook advertising is an effective way to recruit diverse populations for health-based interventions. Audience network placement should be avoided. The Facebook lookalike audience may not be necessary for recruitment, with drawbacks including an unknown algorithm and unclear use of Facebook user data, and so public concerns around data privacy should be considered. Trial Registration ClinicalTrial.gov NCT02823028; https://clinicaltrials.gov/ct2/show/NCT02823028

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Ferri, Laura Maria, Matteo Pedrini, and Marco Minciullo. "Corporate social responsibility and stakeholder dialogue under institutional voids: decoupling the role of corporate motives, ethics, and resources." Journal of Management and Governance 26, no. 1 (November 5, 2021): 159–88. http://dx.doi.org/10.1007/s10997-021-09598-2.

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AbstractThe present study aims at further understanding the relationships between Corporate Social Responsibility (CSR) and Stakeholder Dialogue (SD) by exploring whether and how corporate motives for CSR affect the engagement into SD under institutional voids. The study also builds on the vast existing literature discussing the role of institutional mechanisms, analyzing how local ethics influence the vision of stakeholders, and on the resource-based view, highlighting how the availability of resources shapes CSR and SD. The paper discusses the results of a study we ran in Mozambique and which involved 235 domestic and foreign firms operating in the country. Mozambique is an interesting setting to analyze CSR as it is characterized by institutional voids, it has a vibrant economic environment, and it is influenced by Ubuntu ethics. Our findings confirm that under institutional voids corporate motives for CSR influence firms’ commitment to SD, especially with regards to profitability, whereas firm driven by legitimacy reasons resulted in being less involved in activities towards stakeholders. Contrary to previous studies, the study highlights that ethics do not affect SD. Differently, the study support literature on the role of resources in influencing the behaviour of companies towards CSR and SD.

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Isolani, Pedro H., Daniel J. Kulenkamp, Johann M. Marquez-Barja, Lisandro Z. Granville, Steven Latré, and Violet R. Syrotiuk. "Support for 5G Mission-Critical Applications in Software-Defined IEEE 802.11 Networks." Sensors 21, no. 3 (January 20, 2021): 693. http://dx.doi.org/10.3390/s21030693.

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With the emergence of 5G networks and the stringent Quality of Service (QoS) requirements of Mission-Critical Applications (MCAs), co-existing networks are expected to deliver higher-speed connections, enhanced reliability, and lower latency. IEEE 802.11 networks, which co-exist with 5G, continue to be the access choice for indoor networks. However, traditional IEEE 802.11 networks lack sufficient reliability and they have non-deterministic latency. To dynamically control resources in IEEE 802.11 networks, in this paper we propose a delay-aware approach for Medium Access Control (MAC) management via airtime-based network slicing and traffic shaping, as well as user association while using Multi-Criteria Decision Analysis (MCDA). To fulfill the QoS requirements, we use Software-Defined Networking (SDN) for airtime-based network slicing and seamless handovers at the Software-Defined Radio Access Network (SD-RAN), while traffic shaping is done at the Stations (STAs). In addition to throughput, channel utilization, and signal strength, our approach monitors the queueing delay at the Access Points (APs) and uses it for centralized network management. We evaluate our approach in a testbed composed of APs controlled by SD-RAN and SDN controllers, with STAs under different workload combinations. Our results show that, in addition to load balancing flows across APs, our approach avoids the ping-pong effect while enhancing the QoS delivery at runtime. Under varying traffic demands, our approach maintains the queueing delay requirements of 5 ms for most of the experiment run, hence drawing closer to MCA requirements.

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Muliadi, Muliadi. "Penerapan Pendekatan Permainan Hijau-Hitam Untuk Meningkatkan Hasil Belajar Lari Cepat (Sprint) Siswa SD." JIKAP PGSD: Jurnal Ilmiah Ilmu Kependidikan 2, no. 1 (September 27, 2017): 150. http://dx.doi.org/10.26858/jkp.v1i2.5286.

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Problems in learning the sport Physical Education and Health (PJOK) ran low level learning outcomes (Sprint students. The problem is formulated as follows How Application-Black ijau game approach to improving student learning outcomes run V SD State 12 Manurunge District of Tanete Riattang Bone regency objective of the research is to describe the application to approach the game Green Black, to improve learning outcomes sprint (Sprint) fifth grade students of SD Negeri 12 Manurunge District of Tan Riattang Bone regency. the focus in the classroom action research is the application of the approach Black-green game and improve learning outcomes sprint (sprint) student. Subjects were students of class V SD Negeri 12 Manurunge District of Tanete Riattang Bone regency, Data collection techniques in this study is the observation and tests. Mechanical Analysis Data are data reduction, data presentation , Withdrawal Conclusion Outcome research that the application of the Black-green game approach can improve learning outcomes sprint (Sprint) Class V students of SD Negeri 12 Manurunge District of Tanete Riattang Bone County. This is evidenced by the increase in the results of learning sprint (sprint) with a high score.

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Bracken, M. E., D. R. Bracken, A. G. Nelson, and R. K. Conlee. "Effect of cocaine on exercise endurance and glycogen use in rats." Journal of Applied Physiology 64, no. 2 (February 1, 1988): 884–87. http://dx.doi.org/10.1152/jappl.1988.64.2.884.

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To determine the effects of cocaine on exercise endurance, male rats were injected intraperitoneally with cocaine (20 mg/kg body wt) or saline and then run to exhaustion 20 min later at 22 m/min and 15% grade. Saline-injected animals ran 74.9 +/- 16.5 (SD) min, whereas cocaine-treated rats ran only 29 +/- 11.6 min. The drug had no effect on resting blood glucose or lactate levels, nor did it affect resting glycogen levels in liver or red and white vastus muscle. However, it did reduce resting soleus glycogen content by 30%. During exercise liver and soleus glycogen depletion occurred at the same rate in saline- and cocaine-treated animals. In contrast, the rate of glycogen depletion during exercise in red and white vastus was markedly increased in cocaine-treated rats with a corresponding elevation in blood lactate (12 vs. only 5 mM in saline group) at exhaustion. These data suggest that cocaine administration (20 mg/kg) before submaximal exercise dramatically alters glycogen metabolism during exercise, and this effect has a negative impact on exercise endurance.

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DeLorey, Darren S., Jason J. Hamann, Zoran Valic, Heidi A. Kluess, Philip S. Clifford та John B. Buckwalter. "α-Adrenergic receptor responsiveness is preserved during prolonged exercise". American Journal of Physiology-Heart and Circulatory Physiology 292, № 1 (січень 2007): H392—H398. http://dx.doi.org/10.1152/ajpheart.00787.2006.

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Our laboratory has previously reported a decline in sympathetic nervous system restraint of skeletal muscle blood flow during prolonged mild-intensity exercise. This decline may be explained by a decrease in α1- and α2-adrenergic receptor responsiveness over time. Thus the purpose of the present study was to investigate the effect of exercise duration on α1- and α2-adrenergic receptor responsiveness during prolonged constant-load exercise. Mongrel dogs ( n = 6) were instrumented chronically with transit-time flow probes on the external iliac arteries and an indwelling catheter in a branch of the femoral artery. On separate days, flow-adjusted doses of selective α1- (phenylephrine) α2-adrenergic-receptor (clonidine) agonists, and tyramine (to evoke endogenous norepinephrine release) were infused following 5, 30 and 50 min of mild-intensity treadmill exercise (3 miles/h), with hindlimb blood flow (HBF) and mean arterial pressure (MAP) monitored continuously. Vascular conductance (VC) was calculated as HBF/MAP. While the dogs ran on the treadmill at 3 miles/h, infusion of phenylephrine resulted in similar decreases in VC after 5 [73% (SD 10)], 30 [76% (SD 9)], and 50 [73% (SD 10)] min of exercise. Infusion of the α2-agonist clonidine also produced similar decreases in VC after 5 [58% (SD 10)], 30 [58% (SD 11)], and 50 [53% (SD 12)] min of exercise. Infusion of tyramine resulted in similar decreases in VC after 5 [55% (SD 15)], 30 [51% (SD 10)], and 50 [50% (SD 7)] min of exercise. These results demonstrate that α1- and α2-adrenergic receptor responsiveness to infusion of selective α1- and α2-adrenergic-receptor agonists and endogenous norepinephrine release (tyramine) does not decline during prolonged mild-intensity exercise. Thus a decrease in α-adrenergic receptor responsiveness over time does not appear to be responsible for the decrease in sympathetic restraint of muscle blood flow during prolonged exercise.

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Більше джерел

Дисертації з теми "SD-RAN"

Schmidt, Robert. "Slicing in heterogeneous software-defined radio access networks." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS525.

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Les réseaux 5G sont envisagés comme un changement de paradigme vers des réseaux orientés services. Dans cette thèse, nous étudions comment combiner efficacement le découpage en tranches et le SD-RAN afin de fournir le niveau requis de flexibilité et de programmabilité dans l'infrastructure RAN pour réaliser des réseaux multi-locataires orientés services. Premièrement, nous concevons une abstraction d'une station de base pour représenter les stations de base logiques et décrire un service de réseau virtualisé. Deuxièmement, nous proposons une nouvelle plateforme SD-RAN conforme aux normes, appelée FlexRIC, sous la forme d'un kit de développement logiciel (SDK). Troisièmement, nous fournissons une conception modulaire pour un cadre d'ordonnancement MAC tenant compte des tranches afin de gérer et de contrôler efficacement les ressources radio dans un environnement multiservice avec un support de qualité de service (QoS). Enfin, nous présentons une couche de virtualisation SD-RAN dynamique basée sur le SDK FlexRIC et le cadre d'ordonnancement MAC pour composer de manière flexible une infrastructure SD-RAN multiservice et fournir une programmabilité pour de multiples contrôleurs SD-RAN
5G networks are envisioned to be a paradigm shift towards service-oriented networks. In this thesis, we investigate how to efficiently combine slicing and SD-RAN to provide the required level of flexibility and programmability in the RAN infrastructure to realize service-oriented multi-tenant networks. First, we devise an abstraction of a base station to represent logical base stations and describe a virtualized network service. Second, we propose a novel standard-compliant SD-RAN platform, named FlexRIC, in the form of a software development kit (SDK). Third, we provide a modular design for a slice-aware MAC scheduling framework to efficiently manage and control the radio resources in a multi-service environment with quality-of-service (QoS) support. Finally, we present a dynamic SD-RAN virtualization layer based on the FlexRIC SDK and MAC scheduling framework to flexibly compose a multi-service SD-RAN infrastructure and provide programmability for multiple SD-RAN controllers

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Тези доповідей конференцій з теми "SD-RAN"

Mehmeti, Fidan, and Wolfgang Kellerer. "Max-min Fair Resource Allocation in SD-RAN." In MSWiM '22: Int'l ACM Conference on Modeling Analysis and Simulation of Wireless and Mobile Systems. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3551661.3561359.

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Mafakheri, Babak, Leonardo Goratti, Robert Abbas, Sam Reisenfeld, and Roberto Riggio. "LTE/Wi-Fi Coordination in Unlicensed Bands: An SD-RAN Approach." In 2019 IEEE Conference on Network Softwarization (NetSoft). IEEE, 2019. http://dx.doi.org/10.1109/netsoft.2019.8806680.

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Papa, Arled, Polina Kutsevol, Fidan Mehmeti, and Wolfgang Kellerer. "Effects of SD-RAN Control Plane Design on User Quality of Service." In 2022 IEEE 8th International Conference on Network Softwarization (NetSoft). IEEE, 2022. http://dx.doi.org/10.1109/netsoft54395.2022.9844029.

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Silva, Shashindra, Homa Eghbali, Masoud Ardakani, and Chintha Tellambura. "The Place Coverage (TPC) - Three-Stage User Association and Rate Maximization for 5G SD-RAN Systems." In 2017 IEEE Wireless Communications and Networking Conference (WCNC). IEEE, 2017. http://dx.doi.org/10.1109/wcnc.2017.7925963.

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Nait Belaid, Mohand Ouamer, Vincent Audebert, Boris Deneuville, and Rami Langar. "SD-RAN based Approach for Smart Grid Critical Traffic Routing and Scheduling in 5G Mobile Networks." In GLOBECOM 2022 - 2022 IEEE Global Communications Conference. IEEE, 2022. http://dx.doi.org/10.1109/globecom48099.2022.10000861.

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