Results 331 to 340 of about 1,429,141 (363)

Gradient Pressure

The American Journal of Occupational Therapy, 1983
Using a properly timed sequence of early gradient pressure greatly facilitates the burn patient's rehabilitation in our program. Hypersensitivity is avoided or alleviated, skin breakdown is minimized, and early hypertrophic scar development and contracture is controlled.
J M, Bruster, G, Pullium
openaire   +2 more sources

On gradients and texture "gradients."

Journal of Experimental Psychology: General, 1984
Texture gradients, systematic variations in image texture due to perspective projection of surface texture, provide information about the shape and disposition of surfaces relative to a viewer. Although this three-dimensional information is usually described in terms of mathematical relationships involving gradients of image properties (Cutting ...
openaire   +2 more sources

Patterning Gradients

2014
Surface-chemical and -morphological gradients can be extremely useful in cell-biological research as high-throughput screening tools-for example, exposing a given set of cells to many different surface conditions at once, under identical ambient conditions, in order to monitor cell behavior such as proliferation or specific gene expression.
Nagaiyanallur V, Venkataraman   +4 more
openaire   +2 more sources

Electrochemically Generated Gradients

Angewandte Chemie International Edition, 2014
AbstractThis review surveys recent developments in the field of electrochemically generated gradients. The gradual variation of properties, which is a key characteristic of gradients, is of eminent importance in technology, for example, directional wetting, as well as biology, for example, chemotaxis.
Krabbenborg, Sven, Huskens, Jurriaan
openaire   +2 more sources

Deep Leakage from Gradients

Neural Information Processing Systems, 2019
Exchanging gradients is a widely used method in modern multi-node machine learning system (e.g., distributed training, collaborative learning). For a long time, people believed that gradients are safe to share: i.e., the training data will not be leaked ...
Ligeng Zhu, Zhijian Liu, Song Han
semanticscholar   +1 more source

Square Attack: a query-efficient black-box adversarial attack via random search

European Conference on Computer Vision, 2019
We propose the Square Attack, a score-based black-box $l_2$- and $l_\infty$-adversarial attack that does not rely on local gradient information and thus is not affected by gradient masking.
Maksym Andriushchenko   +3 more
semanticscholar   +1 more source

Accelerating gradient descent and Adam via fractional gradients

Neural Networks, 2022
We propose a class of novel fractional-order optimization algorithms. We define a fractional-order gradient via the Caputo fractional derivatives that generalizes integer-order gradient. We refer it to as the Caputo fractional-based gradient, and develop an efficient implementation to compute it. A general class of fractional-order optimization methods
Yeonjong Shin   +2 more
openaire   +3 more sources

Gradient Hydrogels

2020
Gradient hydrogels represent a pivotal and expanding direction of three-dimensional cell culture. Since various types of gradients play an important role in physiological and pathological processes in vivo, recreation of these gradients in vitro allows a better understanding of cellular behavior, intercellular and cell-matrix interactions.
openaire   +2 more sources

Hydrostatically balanced gradient-formers: Programming of gradients

Analytical Biochemistry, 1980
Abstract A simple, inexpensive, and flexible design of a gradient former is described, one which permits the programming of concentration gradients of several species simultaneously with a high degree of accuracy and reproducibility. The apparatus consists of a set of rectangular reservoirs whose cross-sectional areas are modified by the use of ...
A G, Clark, J W, Gellen
openaire   +2 more sources

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