Results 71 to 80 of about 3,790,217 (289)

Hardware-Based Sobel Gradient Computations for Sharpness Enhancement

International Journal of Technology, 2019
The majority of imaging systems are software based; they require some kind of microprocessor or microcontroller for the imaging algorithms to run. As the speed requirements of imaging and communications systems increase, the need for more hardware ...
Daniel Cheok Kiang Kho, Mohammad Faizal Ahmad Fauzi, Sin Liang Lim   +2 more
doaj   +1 more source

Learning Supervised PageRank with Gradient-Based and Gradient-Free Optimization Methods

, 2016
In this paper, we consider a non-convex loss-minimization problem of learning Supervised PageRank models, which can account for some properties not considered by classical approaches such as the classical PageRank model.
Bogolubsky, Lev, Dvurechensky, Pavel, Gasnikov, Alexander, Gusev, Gleb, Nesterov, Yurii, Raigorodskii, Andrey, Tikhonov, Aleksey, Zhukovskii, Maxim   +7 more
core   +1 more source

Learning to Learn Gradient Aggregation by Gradient Descent [PDF]

Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence, 2019
In the big data era, distributed machine learning emerges as an important learning paradigm to mine large volumes of data by taking advantage of distributed computing resources. In this work, motivated by learning to learn, we propose a meta-learning approach to coordinate the learning process in the master-slave type of distributed systems ...
Jinlong Ji, Xuhui Chen, Qianlong Wang, Lixing Yu, Pan Li 0001   +4 more
openaire   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Convection and extracellular matrix binding control interstitial transport of extracellular vesicles

Journal of Extracellular Vesicles, 2023
Extracellular vesicles (EVs) influence a host of normal and pathophysiological processes in vivo. Compared to soluble mediators, EVs can traffic a wide range of proteins on their surface including extracellular matrix (ECM) binding proteins, and their ...
Peter A. Sariano, Rachel R. Mizenko, Venktesh S. Shirure, Abigail K. Brandt, Bryan B. Nguyen, Cem Nesiri, Bhupinder S. Shergill, Terza Brostoff, David M. Rocke, Alexander D. Borowsky, Randy P. Carney, Steven C. George   +11 more
doaj   +1 more source

Accelerated gradient boosting [PDF]

Machine Learning, 2019
Gradient tree boosting is a prediction algorithm that sequentially produces a model in the form of linear combinations of decision trees, by solving an infinite-dimensional optimization problem. We combine gradient boosting and Nesterov's accelerated descent to design a new algorithm, which we call AGB (for Accelerated Gradient Boosting).
Biau, Gérard, Cadre, Benoît, Rouvière, Laurent   +2 more
openaire   +4 more sources

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Imaging Fabry-Perot Spectroscopy of NGC 5775: Kinematics of the Diffuse Ionized Gas Halo

, 2005
We present imaging Fabry-Perot observations of Halpha emission in the nearly edge-on spiral galaxy NGC 5775. We have derived a rotation curve and a radial density profile along the major axis by examining position-velocity (PV) diagrams from the Fabry ...
Dettmar R.-J., George H. Heald, Joseph A. Collins, Joss Bland‐Hawthorn, Richard J. Rand, Robert A. Benjamin, Rossa J., Sancisi R., Schaap W. E., Tullmann R.   +9 more
core   +1 more source

Smiling Gurken gradient-an expansion of the Gurken gradient [PDF]

Fly, 2008
Morphogen gradients provide unique positional information within a tissue. Cells that are sensitive to the concentration of the morphogen integrate this signal and develop an appropriately distinct cell fate. A morphogen gradient is usually generated by a restricted source and shaped by the speed of diffusion and stability of the signaling molecule. In
Pei-Yu, Wang, Wei-Ling, Chang, Li-Mei, Pai   +2 more
openaire   +2 more sources

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source