Results 71 to 80 of about 4,114,452 (292)

Exploring the Fourth Order

open access: yesConference Proceedings of the Academy for Design Innovation Management, 2019
Companies are organised to fulfil two distinctive functions: efficient and resilient exploitation of current business and parallel exploration of new possibilities. For the latter, companies require strong organisational infrastructure such as team compositions and functional structures to ensure exploration remains effective.
Barend KLITSIE   +2 more
openaire   +1 more source

Network Localization of Fatigue in Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Fatigue is among the most common symptoms and one of the main factors determining the quality of life in multiple sclerosis (MS). However, the neurobiological mechanisms underlying fatigue are not fully understood. Here we studied lesion locations and their connections in individuals with MS, aiming to identify brain networks ...
Olli Likitalo   +12 more
wiley   +1 more source

Fourth Order MCA and Chaos-Based Image Encryption Scheme

open access: yesIEEE Access, 2019
This paper presents a fast and efficient cryptosystem for enciphering digital images. It employs two of the most prominent dynamical systems-chaotic maps and cellular automata.
Aslam Li   +4 more
doaj   +1 more source

Adaptive discontinuous Galerkin approximations to fourth order parabolic problems [PDF]

open access: yes, 2013
An adaptive algorithm, based on residual type a posteriori indicators of errors measured in $L^{\infty}(L^2)$ and $L^2(L^2)$ norms, for a numerical scheme consisting of implicit Euler method in time and discontinuous Galerkin method in space for linear ...
Georgoulis, Emmanuil H.   +1 more
core  

A detailed analysis of structure growth in $f(R)$ theories of gravity

open access: yes, 2008
We investigate the connection between dark energy and fourth order gravity by analyzing the behavior of scalar perturbations around a Friedmann-Robertson-Walker background.
Ananda, Kishore N.   +2 more
core   +1 more source

Fibrinogen Changes Before and After Intravenous Thrombolysis as Predictors of Cerebral Injury and Clinical Outcomes in Acute Ischemic Stroke: A Multicenter Prospective Cohort Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Plasma fibrinogen is essential in thrombosis and fibrinolysis, yet its dynamic changes pre‐ and post‐intravenous thrombolysis (IVT) for predicting brain injury severity and prognosis in acute ischemic stroke (AIS) patients remain unclear.
Wenhai Zhai   +28 more
wiley   +1 more source

Institutions as Objects in Fourth Order Design

open access: yesShe Ji: The Journal of Design, Economics and Innovation
Fourth order design, which involves systems and environments, is a frequently misunderstood area of design. The concept of institution offers a way to clarify and enrich fourth order design in both theory and practice.
Kipum Lee
doaj   +1 more source

Lessons Learned From a Delayed‐Start Trial of Modafinil for Freezing of Gait in Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Freezing of gait (FOG) in people with Parkinson's disease (PwPD) is debilitating and has limited treatments. Modafinil modulates beta/gamma band activity in the pedunculopontine nucleus (PPN), like PPN deep brain stimulation. We therefore tested the hypothesis that Modafinil would improve FOG in PwPD.
Tuhin Virmani   +8 more
wiley   +1 more source

Multiplicity of solutions for some fourth-order m-point boundary-value problems

open access: yesElectronic Journal of Differential Equations, 2010
Using the theory of the fixed point index in a cone and the Leray-Schauder degree, this paper investigates the existence and multiplicity of nontrivial solutions for a class of fourth order m-point boundary-value problems.
Haitao Li, Yansheng Liu
doaj  

Fourth-order perturbative extension of the singles-doubles coupled-cluster method

open access: yes, 2002
Fourth-order many-body corrections to matrix elements for atoms with one valence electron are derived. The obtained diagrams are classified using coupled-cluster-inspired separation into contributions from n-particle excitations from the lowest-order ...
Derevianko, Andrei, Emmons, Erik D.
core   +1 more source

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