Results 101 to 110 of about 4,479,442 (268)
PLANTS, PEOPLE, PLANET, EarlyView.DNA fingerprinting is becoming the standard measurement procedure in crop adoption studies in the Global South, yet the lack of systematic and intentional sampling regarding which farmer to go to the plot with may bias results from these methods. We introduce a methodological innovation, Sampling for Socially Inclusive Adoption Studies (SSAS), to offer
Yoselyn Hernandez Chaves +12 more
wiley +1 more source
On the laplacian estrada index of a graph
Applicable Analysis and Discrete Mathematics, 2009 Let G be a graph of order n. Let ?1 , ?2 , . . . , ?n be the eigenvalues of the adjacency matrix of G, and let ?1 , ?2 , . . . , ?n be the eigenvalues of the Laplacian matrix of G. Much studied Estrada index of the graph G is defined n as EE = EE(G)= ?n/i=1 e?i . We define and investigate the Laplacian Estrada index of the graph G, LEE=LEE(G)= ?n/i=1 e(
Jianxi Li, Chee Shiu, An Chang
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Science Education, EarlyView.ABSTRACT This study explores students' emotions in the undergraduate chemistry laboratory, focusing particularly on emotional responses to making mistakes. Using an ecological momentary assessment design, we collected on‐task data from 240 students and 1635 learning situations during the laboratory sessions.
Reetta Kyynäräinen +4 more
wiley +1 more source
Desenvolvimento e Meio Ambiente, 2019 Brazilian’s conservation strategies are not limited only by the creation of Protected Areas, either Integral Protection or Sustainable Use. There are distinct strategies that aim to value services provided by ecosystems, combining conservation to the ...
Mário Muniz Tagliari +2 more
doaj +1 more source
Science Education, EarlyView.ABSTRACT College science exams are an important and widespread marker for student progress toward technical careers. Predominantly enacted using traditional teaching practices, exams also represent an opportunity for significant improvement in higher education.
Benjamin L. Wiggins +2 more
wiley +1 more source
Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links
Geophysical Monograph Series, Page 191-228., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Steven C. Bergman +2 more
wiley +1 more source
Science Education, EarlyView.ABSTRACT Science identity (SI) has gained increasing prominence in science education research due to its potential role in fostering student engagement, motivation, and persistence in STEM pathways. However, its conceptualization remains varied and contested, complicating both measurement and curricular implementation.
Antonio García‐Carmona +1 more
wiley +1 more source
Science Education, EarlyView.ABSTRACT Science identity is often conceptualized through constructs such as performance, competence, recognition, and interest, with prior research highlighting the roles of race, gender, and cultural background in shaping students' experiences. However, limited scholarship has examined how disability interacts with science identity in postsecondary ...
Ariel Chasen, Maura Borrego
wiley +1 more source
Laplacian Estrada index of trees
, 2011 Let $G$ be a simple graph with $n$ vertices and let $μ_1 \geqslant μ_2 \geqslant...\geqslant μ_{n - 1} \geqslant μ_n = 0$ be the eigenvalues of its Laplacian matrix. The Laplacian Estrada index of a graph $G$ is defined as $LEE (G) = \sum\limits_{i = 1}^n e^{μ_i}$.
Ilic, Aleksandar, Zhou, Bo
openaire +2 more sources
Fair Markets and Resilient Supply Chains: Designing Sustainable Intermediation for Rural Communities
Sustainable Development, EarlyView.ABSTRACT Agriculture in Ecuador's communes faces significant economic, social, and environmental challenges, intensified by supply chains dominated by traditional intermediaries. The lack of context‐specific sustainability studies further increases the vulnerability of smallholders.
Jacqueline del Rocío Bacilio Bejeguen +3 more
wiley +1 more source