Results 41 to 50 of about 891 (172)

On the connection problem for nonlinear differential equation

open access: yesBoundary Value Problems, 2019
We consider the connection problem of the second nonlinear differential equation 1 Φ″(x)=(Φ′2(x)−1)cotΦ(x)+1x(1−Φ′(x)) $$\begin{aligned} \varPhi''(x)= \bigl( \varPhi^{\prime2}(x)-1 \bigr)\cot\varPhi(x)+\frac{1}{x} \bigl(1- \varPhi'(x) \bigr) \end{aligned}
Zhao-Yun Zeng, Lin Hu
doaj   +1 more source

The Contingent Eco‐Innovation–Firm Performance Link: A Global Systematic Literature Review and Future Research Agenda

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The relationship between eco‐innovation (EI) and firm performance (FP) is central to environmental management research, yet empirical evidence remains fragmented and highly context dependent. This article presents a global systematic literature review (SLR) of 541 empirical studies (2006–April 2025) to (i) diagnose the systematic sources of ...
Ali Mammadov
wiley   +1 more source

Improving the area-preserving parameterization of rational Bézier surfaces by rational bilinear transformation

open access: yesGraphical Models
To improve the area-preserving parameterization quality of rational Bézier surfaces, an optimization algorithm using bilinear reparameterization is proposed.
Xiaowei Li   +5 more
doaj   +1 more source

Re-discussion on n-order circle group criterion of Möbius transformation(再论Möbius变换中的n阶循环群判据)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2014
用二阶方阵的幂运算取代Möbius变换的迭代运算,导出了 Möbius变换为n阶循环群的判据,并对判据进行了简化,最后给出了它们的应用.
GANXinrong(甘欣荣)   +1 more
doaj   +1 more source

A Strategic Approach to Improving Interfacial Interactions in TPU/POSS Composites via Ball Milling of POSS

open access: yesPolymer Engineering &Science, EarlyView.
Ball‐milling promotes uniform POSS dispersion in the TPU matrix, markedly improving the mechanical performance of TPU‐POSS composites. ABSTRACT We synthesized TPU/POSS composites through a two‐step process involving the ball milling of POSS to reduce its particle size, followed by in situ polymerization of TPU to reinforce the material.
Sakrit Hait   +2 more
wiley   +1 more source

Creating a Masterpiece. The Road to (and Beyond) Woodward and Hoffmann's 1969 Angewandte Chemie Treatise

open access: yesThe Chemical Record, EarlyView.
This publication describes how R. B. Woodward and Roald Hoffmann crafted their masterpiece publications. Illustrations include Woodward's first draft of the famous “Violations There are none. Nor can violations be expected of so fundamental a principle of maximum bonding.” Original but discarded text shows the stepwise paths toward the W‐H masterpieces.
Jeffrey I. Seeman
wiley   +1 more source

A Non-Invertible Secure Template Generation Using AES Encrypted MCC and Random Triangle Projection

open access: yesIEEE Access
In recent years, due to the exponential growth in the applicability of biometric authentication systems, it has become essential to address the privacy and security concerns of user biometric information.
Mohd Imran   +2 more
doaj   +1 more source

A PMU-Based Method for Smart Transmission Grid Voltage Security Visualization and Monitoring

open access: yesEnergies, 2017
With the rapid growth of usage of phasor measurement units (PMUs) for modern power grids, the application of synchronized phasors (synchrophasors) to real-time voltage security monitoring has become an active research area.
Heng-Yi Su, Tzu-Yi Liu
doaj   +1 more source

AUGURAL TERRITORIES: On the Prophetic Organizing of the Mid‐range

open access: yesInternational Journal of Urban and Regional Research, EarlyView.
Abstract In this article I introduce the concept of augural territories to theorize the urbanism that emerged during pandemic lockdowns. I draw on ethnographic research in Madrid to examine how community‐based responses—including mutual aid networks, food pantries and neighbourhood associations—disrupted the spatial and temporal logics of territorial ...
Alberto Corsín Jiménez
wiley   +1 more source

Degenerate Saccheri Quadrilaterals, Möbius Transformations and Conjugate Möbius Transformations

open access: yesInternational Electronic Journal of Geometry, 2017
In this paper, we define a new geometric concept that we will call degenerate Saccheri quadrilateral and use it to give a new characterization of Mobius transformations. Our proofs are based on a geometric approach.
openaire   +4 more sources

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