Results 111 to 120 of about 12,842 (197)

A matheuristic for the traveling salesman problem with positional consistency constraints

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract We propose a matheuristic for the traveling salesman problem with positional consistency constraints, where we seek to generate a set of routes with minimum total cost, in which the nodes visited in more than one route (consistent nodes) must occupy the same relative position in all routes.
Luís Gouveia, Ana Paias, Mafalda Ponte
wiley   +1 more source

Short‐term performance responses of an intertidal fish to sedimentation and warming

open access: yesJournal of Fish Biology, EarlyView.
Abstract Climate change is altering coastal ecosystems by causing environmental fluctuations, such as increases in temperature and turbidity, which pose major implications for fish physiology and behaviour. Increases in temperature affect fish food intake, swimming capacity and oxygen delivery, while increases in turbidity can impair or enhance prey ...
Anna Carolina Resende   +3 more
wiley   +1 more source

DNA barcoding uncovers two putative new species in Trachelyopterus (Siluriformes: Auchenipteridae)

open access: yesJournal of Fish Biology, EarlyView.
Abstract Trachelyopterus is a cryptic genus within the Neotropical catfish family Auchenipteridae with a complex history of taxonomic revisions. Despite the notable morphological and genetic similarities among its species, some studies suggest that the genus harbours greater diversity than is currently recognized, including additional species yet to be
Fiorindo José Cerqueira   +9 more
wiley   +1 more source

Immunolocalization of anti-Mullerian hormone in bovine testes and ovaries during fetal development. [PDF]

open access: yesAnim Reprod
Brito VC   +9 more
europepmc   +1 more source

Morphological study of the supratrochlear foramen in Canis lupus ssp.

open access: yesJournal of Anatomy, EarlyView.
The supratrochlear foramen (STF) is a common anatomical feature in the humeri of dogs and wolves. This study shows that the STF exhibits a consistent shape and position in dogs and wolves, suggesting a common morphological pattern; however, it was less frequent in smaller dog humeri, and its size correlated with humeral dimensions, suggesting that ...
Mariana Batista   +9 more
wiley   +1 more source

How the Threat of Knowledge Loss Drives Firms’ R&D Dynamism: A Threat Rigidity Perspective

open access: yesJournal of Management Studies, EarlyView.
Abstract Drawing on threat rigidity theory, this paper argues that the threat of knowledge loss gives rise to a threat rigidity effect in firms’ R&D function, that is, reduces their R&D dynamism. It further argues that the dampening of R&D dynamism is greater for firms more vulnerable to the threat of knowledge loss due to facing greater product market
Aman Asija, Dimo Ringov
wiley   +1 more source

Competency matrix for healthcare professionals caring for people with chronic conditions. [PDF]

open access: yesRev Lat Am Enfermagem
Ramos SF   +5 more
europepmc   +1 more source

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