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Academic literature on the topic 'PolyShard'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "PolyShard"

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Li, Songze, Mingchao Yu, Chien-Sheng Yang, Amir Salman Avestimehr, Sreeram Kannan, and Pramod Viswanath. "PolyShard: Coded Sharding Achieves Linearly Scaling Efficiency and Security Simultaneously." IEEE Transactions on Information Forensics and Security 16 (2021): 249–61. http://dx.doi.org/10.1109/tifs.2020.3009610.

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Salehi, F., M. J. Cleary, and A. R. Masri. "Population balance equation for turbulent polydispersed inertial droplets and particles." Journal of Fluid Mechanics 831 (October 17, 2017): 719–42. http://dx.doi.org/10.1017/jfm.2017.653.

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This paper presents a probability density function (PDF) form of the population balance equation (PBE) for polysized and polyshaped droplets and solid particles in turbulent flows. A key contribution of this paper lies in the inclusion of an explicit consideration of the inertial effects and the shape of particles in the PDF-PBE formulation. The number density is taken as a function of droplet or particle size (volume) and shape as well as space and time. Potentially, other particle properties could also be included in the formulation. Inertial effects are quantified through the Stokes number, leading to accurate modelling of the different trajectories that are followed by droplets and/or particles with different sizes and shapes. To treat these effects, a new affordable approach is proposed and referred to as the method of Stokes binning. Here, the inertial dispersed elements are accelerated due to fluid dynamic forces associated with an averaged Stokes number in each bin. The model is validated against two data sets. The first data set includes a series of numerical test cases involving the injection of polyshaped droplets ranging in size from 1 to 50 $\unicode[STIX]{x03BC}\text{m}$ into a turbulent jet resulting in inlet Stokes numbers ranging from 0.03 to 75.2. The second data set consists of an experimental case focusing on the dispersion of 60 and 90 $\unicode[STIX]{x03BC}\text{m}$ spherical droplets in a turbulent round jet, resulting in inlet Stokes numbers of 53 and 122, respectively. The results confirm the ability of the approach to accurately model the polysized and polyshaped droplet dispersion using as few as eight Stokes bins. This approach has the potential to greatly reduce the computational cost of modelling the evolution of inertial droplets and particles in turbulent flows.
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Zaman, Yasmin Ara, Shourav Dutta, Swarna Tribedi, A. T. M. Asaduzzaman, Harasit Kumar Paul, Bishnu Pada Dey, and Md Nazrul Islam. "A 15-year-old boy presented with large cerebriform hyperpigmented plaque over scalp." Bangabandhu Sheikh Mujib Medical University Journal 13, no. 1 (February 19, 2020): 18–21. http://dx.doi.org/10.3329/bsmmuj.v13i1.45212.

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This article has no abstract. The first 100 words appear below: A 15-year-old boy 4th issue of a non-consanguineous parents presented with a history of multiple plaques and patches on the scalp, trunk, upper and lower extremities since birth. Initially, the plaques and patches were smaller in sizes, dark brown in color, painless and non-pruritic. Since 4th year of his age, these plaques start increasing in size and color turned into black gradually. The lesion on the scalp became a giant cerebriform plaque that involved left parietal region. Lesions on the trunk, upper and lower extremities became polysized and polyshaped hyperpigmented papules and nodules.
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Kumar, Vineet, and Sudesh Kumar Yadav. "Synthesis of Stable, Polyshaped Silver, and Gold Nanoparticles Using Leaf Extract ofLonicera japonicaL." International Journal of Green Nanotechnology 3, no. 4 (October 2011): 281–91. http://dx.doi.org/10.1080/19430892.2011.633474.

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V.V. SAGVEKAR, B. P. PATIL, D.V. SHINGRE, M. S. GAWANKAR, and A.P. CHAVAN. "Success of cashew grafts cv. Vengurla-4 as influenced, by polyshed environments." Journal of Agrometeorology 7, no. 2 (December 1, 2005): 262–67. http://dx.doi.org/10.54386/jam.v7i2.854.

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Singh, Avinish, Rashmie Prabha, Najeeb Ahmad, Swathi Chacham, Kriti Mohan, Kumar Gaurav, Nowneet Bhat, et al. "A two-year-old male child with Doose syndrome: An unusual entity." Case Reports International 9, no. 1 (March 26, 2020): 1–7. http://dx.doi.org/10.5348/100077z06as2020cr.

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Introduction: Myoclonic-astatic epilepsy of early childhood (MAE)/Doose syndrome (DS) is an infrequent entity causing myoclonic-astatic seizures. Case Report: A 2-year-old male child presenting with history of seizures from one year, inability to speak and choreiform movements. He had isolated speech delay with other quadrants being normal (speaks monosyllables at two years). Parents noticed brief jerky movements of both upper and lower limbs with increasing intensity over 2–3 months which became a daily occurrence. Also, the child had episodes of abrupt loss of contact with surroundings and prolonged staring (3–5 minutes) and few eye blinks. Subsequently, by 1.5 years, he started having episodes of sudden forward bending of head followed by frequent falls. Jerks either preceded or followed falls. Decreased attention and hyperactivity had started by one year of the illness. Electroencephalography depicted polysharp waves with maximum voltage of 180 μV and 3–4 Hz@ an interval of 20–30 seconds bilaterally. He responded to oral sodium valproate, levetiracetam, and ketogenic diet. Conclusion: We report a 2-year-old male child with Doose syndrome, a distinct yet rare entity.
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Singh, Manoj, Kumar Saurav, Alexander Majouga, Mamta Kumari, Manish Kumar, S. Manikandan, and A. K. Kumaraguru. "The cytotoxicity and cellular stressby temperature-fabricated polyshaped gold nanoparticles using marine macroalgae,Padina gymnospora." Biotechnology and Applied Biochemistry 62, no. 3 (December 14, 2014): 424–32. http://dx.doi.org/10.1002/bab.1271.

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Dash, Shib Shankar, Rakhi Majumdar, Arun Kanti Sikder, Braja Gopal Bag, and Biplab Kumar Patra. "Saraca indica bark extract mediated green synthesis of polyshaped gold nanoparticles and its application in catalytic reduction." Applied Nanoscience 4, no. 4 (April 20, 2013): 485–90. http://dx.doi.org/10.1007/s13204-013-0223-z.

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ZAKIR, MUHAMMAD, MAMING MAMING, MISKA SANDA LEMBANG, and ESTY YURNITA LEMBANG. "Reduction mechanisms of Ag(I) and Au(III) in the synthesis of silver and gold nanoparticles using leaf extract of Terminalia catappa." Jurnal Natural 21, no. 2 (June 24, 2021): 89–98. http://dx.doi.org/10.24815/jn.v21i2.20677.

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Synthesis of silver nanoparticles (AgNP) and gold nanoparticles (AuNP) was carried out by the reduction method with leaf extract of Ketapang (Terminalia catappa). The biomolecules present in the extract generated the reduction of Ag+ and Au3+ ions from AgNO3 and HAuCl4, respectively. The growth of nanoparticles was monitored by UV-Vis spectrophotometer. The maximum absorption of biosynthesis of AgNP and AuNP were observed in the respective range of 421-431nm and 530-535nm. Those peaks correspond to surface plasmon absorbance of AgNP and AuNP, respectively. Analysis on the functional groups change of the extract by Fourier Transform Infra Red (FTIR) Spectroscopy showed the formation of carbonyl- from hydroxyl-groups which suggested the oxidation and reduction processes involved in the formation of both nanoparticles. The average size distributions determined by PSA (Particle Size Analyzer) are 55-71nm and 18-44nm for AgNP and AuNP, respectively. Morphology of the silver nanoparticles was observed by Scanning Electron Microscope (SEM) and the structure of the compounds was characterized using X-ray Diffraction (XRD). The shape of AgNP varied from triangular, cubic and hexagonal polyshaped, while AuNP were spherical. XRD studies showed that the nanoparticles obtained were crystalline gold and silver.
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Raghunandan, D., S. Basavaraja, B. Mahesh, S. Balaji, S. Y. Manjunath, and A. Venkataraman. "Biosynthesis of Stable Polyshaped Gold Nanoparticles from Microwave-Exposed Aqueous Extracellular Anti-malignant Guava (Psidium guajava) Leaf Extract." NanoBiotechnology 5, no. 1-4 (October 6, 2009): 34–41. http://dx.doi.org/10.1007/s12030-009-9030-8.

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Dissertations / Theses on the topic "PolyShard"

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Rathi, Nilesh. "Scaling Blockchains Using Coding Theory and Verifiable Computing." Thesis, 2021. https://etd.iisc.ac.in/handle/2005/5203.

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The issue of scalability has been restricting blockchain from its widespread adoption. The current transaction rate of bitcoin is around seven transactions/second while its size has crossed the 300 GB mark. Although many approaches propose different ways to scale blockchain, e.g., sharding, lightning network, etc., we focus our analysis on methods utilizing ideas from coding theory. We first consider SeF, a blockchain archiving architecture utilizing LT codes to reduce storage constraints per node up to 1000x. SeF enables full nodes to store only a small number of encoded blocks or droplets instead of an entire blockchain. Although efficient in the average case, the architecture sometimes requires large bandwidth (many droplets) to reconstruct blockchain. While other rate-less coding strategies utilizing two encoding levels are proven better than LT codes, we investigate their suitability in the proposed architecture. We propose and simulate three techniques about how to incorporate these coding strategies. The results show that precode-based rate-less coding schemes provide similar storage savings with reduced bandwidth variance for recovery. The other work we examine is PolyShard, which introduces the notion of coded-sharding. Coded sharding exports block verification of sub-ledger to the whole network instead of nodes handling that sub-ledger, making sharding resilient even to an adaptive adversary, i.e., adversary having the power to corrupt nodes after their assignment to shards. However innovative, PolyShard requires decoding of Reed-Solomon codes over large fields for block verification in real-world settings, making it computationally intensive and less practical. We propose replacing the decoding phase with verifiable computing, which reduces the bottleneck and makes the system practical for light verification functions.
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Conference papers on the topic "PolyShard"

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Khooshemehr, Nastaran Abadi, and Mohammad Ali Maddah-Ali. "The Discrepancy Attack on Polyshard-ed Blockchains." In 2021 IEEE International Symposium on Information Theory (ISIT). IEEE, 2021. http://dx.doi.org/10.1109/isit45174.2021.9517994.

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Li, Songze, Mingchao Yu, Chien-Sheng Yang, A. Salman Avestimehr, Sreeram Kannan, and Pramod Viswanath. "PolyShard: Coded Sharding Achieves Linearly Scaling Efficiency and Security Simultaneously." In 2020 IEEE International Symposium on Information Theory (ISIT). IEEE, 2020. http://dx.doi.org/10.1109/isit44484.2020.9174305.

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Yavartanoo, Mohsen, Shih-Hsuan Hung, Reyhaneh Neshatavar, Yue Zhang, and Kyoung Mu Lee. "PolyNet: Polynomial Neural Network for 3D Shape Recognition with PolyShape Representation." In 2021 International Conference on 3D Vision (3DV). IEEE, 2021. http://dx.doi.org/10.1109/3dv53792.2021.00109.

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