Results 21 to 30 of about 340,966 (303)

N-cadherin, spine dynamics, and synaptic function

open access: yesFrontiers in Neuroscience, 2008
Dendritic spines are one half (the postsynaptic half) of most excitatory synapses. Ever since the direct observation over a decade ago that spines can continually change size and shape, spine dynamics has been of great research interest, especially as a ...
Shreesh P Mysore   +2 more
doaj   +1 more source

Situating peace journalism in journalism studies: A critical appraisal [PDF]

open access: yesConflict & Communication Online, 2007
Most wars were not brought to our attention if there were no journalists to report on them and no news media to send reporters to conflict spots. At the same time, the media often give priority to conflict and war at the expense of playing a positive ...
Thomas Hanitzsch
doaj  

Financial constraints in China: firm-level evidence. [PDF]

open access: yes
This paper uses a unique micro-level data-set on Chinese firms to test for the existence of a "political-pecking order" in the allocation of credit. Our findings are threefold. Firstly, private Chinese firms are credit constrained while State-owned firms
Poncet, Sandra   +2 more
core   +9 more sources

SPARC: Structural properties associated with residue constraints

open access: yesComputational and Structural Biotechnology Journal, 2022
SPARC facilitates the generation of plausible hypotheses regarding underlying biochemical mechanisms by structurally characterizing protein sequence constraints.
Andrew F. Neuwald   +2 more
doaj   +1 more source

Female Entrepreneurship Under Constraint: An Explanatory Model of Structural Barriers and Strategic Decision-Making in Ecuador

open access: yesAdministrative Sciences
This study examines how women entrepreneurs in Ecuador confront structural constraints and how these conditions influence their strategic management decisions. Adopting an explanatory approach, a structural equation model (PLS-SEM) was developed based on
Sedolfo Carrasquero-Ferrer   +3 more
doaj   +1 more source

Towards a Migrant-Centred Perspective on International Migration: The Contribution of Amartya Sen’s Capability Approach

open access: yesSocial Work and Society, 2014
Cross-border migration, a multifaceted phenomenon involving a heterogeneous population all over the world, is studied by a fragmented host of theories. Departing from a critical review of economic neo-classical theories, this paper proposes a model which
Sara Bonfanti
doaj   +2 more sources

Structural disambiguation with constraint propagation [PDF]

open access: yesProceedings of the 28th annual meeting on Association for Computational Linguistics -, 1990
We present a new grammatical formalism called Constraint Dependency Grammar (CDG) in which every grammatical rule is given as a constraint on word-to-word modifications. CDG parsing is formalized as a constraint satisfaction problem over a finite domain so that efficient constraint-propagation algorithms can be employed to reduce structural ambiguity ...
openaire   +1 more source

New Structuralism and the balance-of payments constraint [PDF]

open access: yesReview of Keynesian Economics, 2019
Structuralists and Post-Keynesians share the perspective that in the long run economic growth is shaped by the income elasticity of exports and imports, and that such elasticities are a positive function of the degree of diversification and technological intensity of the pattern of specialization. Since the mid 1970s, New Structuralists began to stress
Porcile G., Yajima G. T.
openaire   +3 more sources

ON THE GAUGE STRUCTURE OF THE CALCULUS OF VARIATIONS WITH CONSTRAINTS [PDF]

open access: yesInternational Journal of Geometric Methods in Modern Physics, 2011
A gauge-invariant formulation of constrained variational calculus, based on the introduction of the bundle of affine scalars over the configuration manifold, is presented. In the resulting setup, the "Lagrangian" ℒ is replaced by a section of a suitable principal fiber bundle over the velocity space.
D. Bruno, G. Luria, Pagani, Enrico
openaire   +3 more sources

Structural Topology Optimization with Local Finite-Life Fatigue Constraints

open access: yesMathematics, 2023
To improve the fatigue resistance of engineering structures, topology optimization has always been an effective design strategy. The direct calculation of large-scale local fatigue constraints remains a challenge due to high computational cost.
Xiaoyan Teng   +3 more
doaj   +1 more source

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