Results 31 to 40 of about 13,251 (150)

An Embedding Theorem for tractor bundles, and an application in conformal pseudo-Riemannian geometry

open access: yes
hypotheses of Theorem 1.2 improved to allow p=q; improvements to proof of proposition 4.12; changes to introduction; details added in some ...
MELNICK, Karin, Neusser, Katharina
openaire   +3 more sources

Reducible conformal holonomy in any metric signature and application to twistor spinors in low dimension

open access: yes, 2014
We prove that given a pseudo-Riemannian conformal structure whose conformal holonomy representation fixes a totally lightlike subspace of arbitrary dimension, there is, wrt.
Lischewski, Andree
core   +1 more source

From Material Tensions to Organizational Paradoxes: How Manufacturers Cope With the Limits of Circular Product Design

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Circular product design (CPD) is central to advancing the circular economy by enabling the narrowing, slowing, and closing of resource flows. Yet, its implementation remains persistently challenging for firms. Prior research has largely framed these challenges as discrete barriers, overlooking the structural contradictions embedded in CPD ...
Vanessa Robertson   +2 more
wiley   +1 more source

Conformal de Rham Hodge theory and operators generalising the Q-curvature [PDF]

open access: yes, 2004
We look at several problems in even dimensional conformal geometry based around the de Rham complex. A leading and motivating problem is to find a conformally invariant replacement for the usual de Rham harmonics. An obviously related problem is to find,
Gover, A. Rod
core   +3 more sources

From Waste to Value: A Bibliometric‐Systematic Review of Biogas and Biomethane Business Literature

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT In response to escalating environmental challenges and the growing demand for sustainable energy solutions, the agri‐food sector is increasingly exploring business models grounded in circular economy (CE) principles based on the production of biogas and biomethane.
Silvia Cantele   +3 more
wiley   +1 more source

Reshaping Labor Intermediation: An Integrated Workforce Management Strategy to Contrast Agricultural Workers' Exploitation in Italy

open access: yesStrategic Change, EarlyView.
ABSTRACT Labor exploitation within agri‐food supply chains poses significant ethical and managerial challenges, particularly in Mediterranean contexts where irregular employment practices persist. This study investigates the case of NoCap, a third‐party ethical certification initiative operating in Italy that integrates social responsibility into ...
Claudio Mirabella   +3 more
wiley   +1 more source

Botanical treatment enhances biochemical responses in enset (Ensete ventricosum (Welw.) Cheesman) clones

open access: yesJSFA reports, Volume 6, Issue 6, Page 236-247, June 2026.
Abstract Background Bacterial wilt of enset (Ensete ventricosum (Welw.) Cheesman) is a severe disease caused by Xanthomonas campestris pv. musacearum, resulting in complete crop failure and considerable damage. This study assessed the biochemical responses of two enset clones (one resistant and one susceptible) when inoculated with the pathogen and ...
Getahun Yemata, Masresha Fetene
wiley   +1 more source

Impacts of Climate Change on Food Security: Land Management–Based Strategies Within a Nature‐Based Solutions Framework

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Climate change poses serious threats to food security by affecting agricultural production processes in multiple ways. This study aims to analyze land management–based solution strategies that can be developed in response to this threat and presents a systematic and holistic framework through the relationship these strategies establish with ...
Nihal Genc, H. Ebru Colak
wiley   +1 more source

Winegrowers' Perceptions and Adoption of Sustainable Soil Management Practices and Technologies: A Case Study in Piedmont, Italy

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Soil is crucial for human survival but is threatened by erosion and contamination. Farmers play a pivotal role in soil conservation, thus, understanding what influences their decisions is crucial. The IN‐GEST SOIL project aimed to mitigate soil erosion and improve soil and vine quality in Piedmont vineyards, NW Italy.
Federica Caffaro   +6 more
wiley   +1 more source

Conformal operators on weighted forms; their decomposition and null space on Einstein manifolds [PDF]

open access: yes, 2013
There is a class of Laplacian like conformally invariant differential operators on differential forms $L^\ell_k$ which may be considered the generalisation to differential forms of the conformally invariant powers of the Laplacian known as the Paneitz ...
A. Rod, Gover, Josef Šilhan
core  

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