Results 81 to 90 of about 50,635 (264)
Jixie chuandong, 2011 To solve helical non-circular gear manufacturing problems,this paper research the simplest mathematical model for hobbing helical non-circular gear and linkage control structure which the machine tool should have.This article introduced the forming ...
姜衍仓, 田芳勇, 胡赤兵
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Advanced Functional Materials, EarlyView.A vertically stacked, DEA‐driven photonic array inspired by cephalopod skin, featuring highly crystalline colloidal crystal gels with vivid color, low FWHM and scalability is presented. The multilayer design removes lateral pixel interference, achieving near‐100% fill factor with fully independent RGB actuation.
Maga Kim +11 more
wiley +1 more source
EU sales law and sustainable consumption of goods
Prawne Problemy Górnictwa i Ochrony ŚrodowiskaThe article attempts to define a new approach in EU contract law to regulate the consumers sales contract in the view to protect environment, sustainability and the circular economy. One of the key aspects of ensuring sustainable consumption of goods is
Liudmyla Savanets
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Advanced Functional Materials, EarlyView.Microscale hydrogels (microgels) feature improved mass transport characteristics supportive of fast actuation and chemical tunability amenable to programmed stimuli response. A unique soft actuator architecture is realized by encapsulating microgels in soft microcirculatory systems which enable the convenient delivery of liquid stimuli for powering and
Nengjian Huang +2 more
wiley +1 more source
Circular economy in sustainable water management – theory and practice
Economics and Environment, 2018 The article presents the principles of the circular economy implemented in the management of water resources. Special attention was paid to problems in water management in new market conditions related to the adoption of the new Water Law.
Elżbieta Lorek, Agnieszka Lorek
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Random doubly stochastic matrices: The circular law
The Annals of Probability, 2014 Let $X$ be a matrix sampled uniformly from the set of doubly stochastic matrices of size $n\times n$. We show that the empirical spectral distribution of the normalized matrix $\sqrt{n}(X-{\mathbf {E}}X)$ converges almost surely to the circular law. This confirms a conjecture of Chatterjee, Diaconis and Sly.
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Advanced Functional Materials, EarlyView.Ferroelectricity in thin HfO2‐based films offers great possibilities for next‐generation neuromorphic memory devices. There, the response to subcoercive voltage signals is driven by the movement of mobile interfaces and their interaction with crystal defects – a yet rather unexplored aspect, which we shed light on and gain new insights into the complex
Maximilian T. Becker +11 more
wiley +1 more source
Meshing Theory of Circular Arc Profile Spiral Bevel Gear based on Form Method Machining
Jixie chuandong, 2019 The application of numerical control forming method machining in circular arc profile bevel gear is discussed, it is proved that the circular arc profile spiral bevel gear based on this method conforms to the basic law of tooth profile meshing, and the ...
He Zhiwei Duan Jianzhong
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Contact Lens with Moiré Patterns for High‐Precision Eye Tracking
Advanced Functional Materials, EarlyView.This work presents a passive contact lens for high‐precision eye tracking, integrating a microscopic moiré grating label. The parallax‐induced shift of macroscopic moiré patterns enables angle measurement with 0.28° precision using a standard camera under ambient light.
Ilia M. Fradkin +11 more
wiley +1 more source
Circular law, extreme singular values and potential theory
Journal of Multivariate Analysis, 2010 Consider the empirical spectral distribution of complex random $n\times n$ matrix whose entries are independent and identically distributed random variables with mean zero and variance $1/n$. In this paper, via applying potential theory in the complex plane and analyzing extreme singular values, we prove that this distribution converges, with ...
Pan, G., Zhou, W.
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