Results 161 to 170 of about 62,047 (274)

Simulation‐Informed Evaluation of Microvascular Parameter Mapping for Diffusion MR Imaging of Solid Tumours

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose We aim to inform the design of new diffusion MRI (dMRI) approaches for microvasculature quantification that enhance the biological specificity of imaging towards cancer. Methods We adopted simulation‐informed modelling of the vascular dMRI signal. We synthesised signals from 1500 synthetic vascular networks, for a variety of protocols (
Anna Kira Voronova   +11 more
wiley   +1 more source

Análisis de fondos de inversión y planes de pensiones

open access: yes, 2014
Graduado o Graduada en Economía por la Universidad Pública de ...
openaire   +2 more sources

Linking Environmental Health and Civic Health: An Analysis of Air Pollution and Charitable Giving

open access: yesNonprofit Management and Leadership, EarlyView.
ABSTRACT This study examines the effect of air pollution on charitable giving. We suggest that the burdens associated with poor air quality are associated with a dampening of civic and philanthropic engagement. Analyzing 12 years of county‐level data from the United States with fixed‐effects OLS and instrumental variables regressions, we identify a ...
Gregory D. Saxton   +6 more
wiley   +1 more source

Opening the Black Box of Nonprofit Reputation and Volunteer Attraction With Supervised Machine Learning

open access: yesNonprofit Management and Leadership, EarlyView.
ABSTRACT With the aim to explore the potential of machine learning for nonprofit research, this article contrasts traditional linear regression with four contemporary supervised machine learning approaches. Concretely, we predict (1) reputation ratings and (2) the total number of volunteers for 4021 non‐profit organizations in the U.S.
Moritz Schmid   +2 more
wiley   +1 more source

Shaping Manager Well‐Being and Functioning in Declining Nonprofit Organizations: The Critical Role of Strategy Implementation

open access: yesNonprofit Management and Leadership, EarlyView.
ABSTRACT Under the roof of Christian churches in Central Europe, some nonprofit organizations (NPOs) grow, while others are in marked decline. Our study in this context extends a previous focus on financial indicators to NPO managers' experiences, their role clarity and job satisfaction, during phases of organizational growth and decline. Specifically,
Max Niehoff, Johannes Stark
wiley   +1 more source

Entrepreneurship Spillover and the determinants of Key Sectors for new business creation: An inter-sectorial approach [PDF]

open access: yes
Whereas the knowledge spillover theory of entrepreneurship focuses on the diffusion of innovative output and knowledge filter among new firms and industries (Acts, et al., 2005; Audrescht, 2007), it has not been studied the phenomenon of entrepreneurship
Massón-Guerra, José Luis   +1 more
core   +1 more source

Estimating European Pilchard (Sardina pilchardus) Total Length: New Equations for the Ichthyoarchaeological Record

open access: yesInternational Journal of Osteoarchaeology, EarlyView.
ABSTRACT Throughout its area of distribution, in particular in the Iberian Peninsula, the European pilchard (Sardina pilchardus Walbaum 1792) has been an extensively exploited species since Prehistoric times. Our knowledge of the past fisheries of this clupeid nevertheless remains limited due to a scarcity of ichthyoarchaeological data, which reflects,
Arnau Brosa‐Planella   +6 more
wiley   +1 more source

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