Results 61 to 70 of about 2,112 (254)
Threshold Concepts and Concept Networks in Evolution Education: An Experimental Intervention Study
Science Education, EarlyView.ABSTRACT This study analyzes the effect of different instructions on threshold concepts within material covering natural selection on students' use of concepts about evolution. Moreover, it examines students' use of concepts as interconnected networks when reasoning about natural selection and analyzes how these concepts relate to each other regarding ...
Helena Aptyka +2 more
wiley +1 more source
Sustainable Development, EarlyView.ABSTRACT Urban environments are at the forefront of the European Union (EU) climate ambitions as envisaged by the European Green Deal (EGD). Cities are also central to delivering most of the 2030 Agenda Sustainable Development Goals (SDGs). However, EU cities face severe implementation challenges in operationalising the EGD and SDGs. This research aims
Matteo Trane +5 more
wiley +1 more source
Наука и техника, 2009 A method for constructing a subset of labeled objects which is used in a heuristic algorithm of possible clusterization with partial training is proposed in the paper.
D. A. Viattchenin
doaj
Asian elephants are associated with a more robust mammalian community in tropical forests
Journal of Animal Ecology, EarlyView.It's the first evidence that Asian elephants are positively associated with robustness of mammalian networks, increases ungulate/primate abundances and minimally disrupts activity patterns. Highlights elephants' overlooked role as keystone architects beyond vegetation engineering, urging conservation prioritization to safeguard ecosystem resilience ...
Li‐Li Li +3 more
wiley +1 more source
Productivity dispersion and persistence in European agriculture
American Journal of Agricultural Economics, EarlyView.Abstract Improving and maintaining agricultural productivity, which is pivotal to deliver private and public goods, is challenged by increasingly uncertain market and environmental conditions. Understanding differences in productivity among farms and its persistence over time helps assess the vulnerability of agricultural production to these external ...
Stefan Wimmer, Robert Finger
wiley +1 more source
Commerce, coalitions, and global value chains: Coordinated and collective lobbying on trade
American Journal of Political Science, EarlyView.Abstract Global value chains (GVCs) have connected firms in complex networks within and across national borders. However, political economy models often assume away production linkages and thus fail to explain pervasive and diverse trade coalitions cutting across industries and firms. I develop a GVC‐centered framework where production linkages through
Hao Zhang
wiley +1 more source
Transitivity of the εm-relation on (m-idempotent) hyperrings
Open Mathematics, 2018 On a general hyperring, there is a fundamental relation, denoted γ*, such that the quotient set is a classical ring. In a previous paper, the authors defined the relation εm on general hyperrings, proving that its transitive closure εm∗$\begin{array}{} \
Norouzi Morteza, Cristea Irina
doaj +1 more source
Social Sciences, 2020 Mapping the structural characteristics of attack behavior, this study explores how violent conflict evolved with the implementation of civil gang injunctions (CGIs).
Gisela Bichler +2 more
doaj +1 more source
Meaning and loss of meaning in supervision
British Journal of Psychotherapy, EarlyView.Abstract Analytic and philosophical literature suggests that repetitive failures to make sense of internal and external events can seriously undermine our inner meaning systems, leading to feelings of meaninglessness and despair. Accepting the absurdity of the wish for a completely predictable, understandable and manageable world relieves the despair ...
Hanoch Yerushalmi
wiley +1 more source
The dynamic complexity of transitive closure is in DynTC0
Theoretical Computer Science, 2001 AbstractThis paper presents a fully dynamic algorithm for maintaining the transitive closure of a binary relation. All updates and queries can be computed by constant depth threshold circuits of polynomial size (TC0 circuits). This places dynamic transitive closure in the dynamic complexity class DynTC0, and implies that transitive closure can be ...
openaire +3 more sources