Results 81 to 90 of about 385,037 (330)

Sluicing phenomena [PDF]

open access: yes, 2013
The paper shows that in various sluicing types, the wh-phrase in the sluicing sentence as well as its relatum in the antecedent clause must be F-marked, and it explains this observation with Schwarzschild's (1999) and Merchant's (1999) focus theory ...
Schwabe, Kerstin
core  

Synergistic Design of Composite Ionogels With Enhanced Thermoelectric Properties, Mechanical Stretchability, and Sustainable Recyclability

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
While flexible TE devices hold promise for converting low‐grade waste heat (e.g., from human skin or electronics) into usable electricity, existing materials suffer from three major limitations: 1) poor mechanical stretchability (failing to match human skin's elongation, ~20–30%), limiting wearability; 2) tradeoffs between thermoelectric efficiency (e ...
Mingqi Liu   +5 more
wiley   +1 more source

Complex oscillations of non-definite Sturm-Liouville problems

open access: yesElectronic Journal of Differential Equations, 2016
We expand upon the basic oscillation theory for general boundary problems of the form $$-y''+q(t)y=\lambda r(t)y, \quad t \in I = [a,b] $$ where q and r are real-valued piecewise continuous functions and y is required to satisfy a pair of ...
Mervis Kikonko, Angelo B. Mingarelli
doaj  

Indefinite Ruhe’s Variant of the Block Lanczos Method for Solving the Systems of Linear Equations

open access: yesAdvances in Mathematical Physics, 2020
In this paper, we equip Cn with an indefinite scalar product with a specific Hermitian matrix, and our aim is to develop some block Krylov methods to indefinite mode.
M. Ghasemi Kamalvand, K. Niazi Asil
doaj   +1 more source

Classification of minimal Lorentz surfaces in indefinite space forms with arbitrary codimension and arbitrary index [PDF]

open access: yes, 2013
Since J. L. Lagrange initiated in 1760 the study of minimal surfaces of Euclidean 3-space, minimal surfaces in real space forms have been studied extensively by many mathematicians during the last two and half centuries.
Chen, Bang-Yen
core  

Pattern of Progression of Oral Potentially Malignant Disorders From Real‐World Data: A 24‐Year Study

open access: yesHead &Neck, EarlyView.
ABSTRACT Background Oral potentially malignant disorder (OPMD) prognostication is limited by uncertainty of which lesions will progress and the aggressiveness of lesion progression. We defined patterns and kinetics of progression in a large cohort of OPMD subjected to serial clinical and histologic examinations. Methods This 24‐year study evaluated the
Subin Surendran   +16 more
wiley   +1 more source

Singularities of Indefinite Hypersurfaces and Indefinite Surfaces along Timelike Curves in Nullcone with Index Two

open access: yesJournal of Function Spaces, 2018
In this paper, a class of indefinite hypersurfaces and a class of indefinite surfaces generated by timelike curves located in nullcone in 4-dimensional semi-Euclidean space with index 2 are discussed. Using the unfolding theory in singularity theory, the
Xue Song, Zhigang Wang
doaj   +1 more source

Cyclic quantum causal models

open access: yesNature Communications, 2021
While unusual processes allowing indefinite causal order are gaining attention in quantum physics, formalisms describing definite causal structures have so far been limited to acyclic ones.
Jonathan Barrett   +2 more
doaj   +1 more source

A possible mathematics for the unification of quantum mechanics and general relativity

open access: yes, 2010
This paper summarizes and generalizes a recently proposed mathematical framework that unifies the standard formalisms of special relativity and quantum mechanics.
A. Kryukov   +3 more
core   +1 more source

Alternative Price Dynamics and Valuation of Flexible Strategies

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT In this article, we study the optimal operational strategy of production projects. We investigate different underlying price models and determine the optimal barriers of transition to suspension, recovery, or irreversible abandonment of productive activity.
Cristina Bertolosi   +2 more
wiley   +1 more source

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