Results 81 to 90 of about 17,661,124 (226)

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

Geological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid, Hafiz U. Rehman, Hao‐Yang Lee, Sun‐Lin Chung, Kaushik Das, Kazumasa Aoki, Muhammad Jawad Zeb, Nasir Ahmad, Muhammad Hussain, Hiroshi Yamamoto   +9 more
wiley   +1 more source

Sage without a Stage: Expanding the Object of Teaching in a Web-Based, High-School Classroom

International Review of Research in Open and Distributed Learning, 2009
This paper reports on a study that uses cultural historical activity theory (CHAT) to make sense of e-teachers’ activity in a context of high-school distance education.
Elizabeth Murphy, Maria A. Rodriguez-Manzanares   +1 more
doaj   +3 more sources

Architecture in Southern African informal settlements: A contextually appropriate intervention

Urbani Izziv, 2019
Architectural professionals can contribute to efforts at achieving sustainable urbanism. However, the realm of professional discourse is extremely limited.
Rudolf PEROLD, Ronnie DONALDSON, Oswald DEVISCH   +2 more
doaj   +1 more source

Social Practice Theory and the Historical Production of Persons [PDF]

, 2009
Working collaboratively we and others have developed a historical, material theory of social practice that integrates the study of persons, local practice, and long term historically institutionalized struggles.
2239, 2238, Holland, Dorothy, Lave, Jean
core  

Methodological issues in developing a multi-dimensional coding procedure for small group chat communication [PDF]

, 2007
In CSCL research, collaboration through chat has primarily been studied in dyadic settings. This article discusses three issues that emerged during the development of a multi-dimensional coding procedure for small group chat communication: a) the unit of
Strijbos, Jan Willem, Strijbos, Jan-Willem, Stahl, Gerry   +2 more
core   +1 more source

Co‐design of a complex school‐based intervention for attention deficit/hyperactivity disorder using the Intervention Mapping approach

JCPP Advances, EarlyView.
Abstract Background Attention deficit/hyperactivity disorder (ADHD) is a highly heritable neurodevelopmental condition, comprising varying difficulties in attention and/or impulsive and overly active behaviours, with knock on effects for health, learning, social and emotional functioning, self‐esteem and quality of life.
Abigail Russell, Suzie Holt, Ian Wellaway, Ali Hirst, Lynne Heaney, Rachel Hanna, James Wenger, Liz Hampton, Barry Sullivan, Fran Townsend, Tamsin Ford, Barnaby D. Dunn, Darren Moore, Edmund Sonuga‐Barke, Linda Pfiffner, Judi Kidger, Rachel Hayes, Rebecca Gudka, Eleanor Bryant, Kirsty Cordwell, the Tools for Schools Planning Group   +20 more
wiley   +1 more source

Let’s CHAT About Online Student Engagement: Cultural-Historical Activity Theory as a Theoretical Lens [PDF]

Student engagement has been linked to academic outcomes and school completion. During the COVID-19 pandemic, online instruction became a learning mode of necessity, resulting in an explosion of related research.
Yu, Jacqueline
core   +2 more sources

A cultural historical activity theory (CHAT) analysis of prehospital emergency medical care clinical mentorship to enable learning

African Journal of Health Professions Education, 2019
Background. Clinical mentorship in health sciences education is a nurtured venture where mentees are guided through practice by their more experienced mentors. However, recent research suggests that there are problems with clinical mentorship.Objective. To explore problems in work-integrated learning within the mentor/mentee relationship.Methods.
Liebenberg, N., Christopher, L., Garraway, James   +2 more
openaire   +4 more sources

When Does Top Management Team Diversity Matter in Large Organizations?

Journal of Organizational Behavior, EarlyView.
ABSTRACT Top management teams (TMTs) drive strategic leadership, but there is little clarity on when the composition of these upper echelons most impacts organization performance. Drawing from the categorization‐elaboration model, we study an 18‐year sample of approximately 4500 organizations and over 32 000 executives and find a positive relationship ...
Frances Fabian, James M. Plečnik, Shan Wang   +2 more
wiley   +1 more source

Designs for Teaching and Learning in Technology-Rich Learning Environments

Nordic Journal of Digital Literacy, 2011
In this paper we argue that the notion of design is conducive to analyzing and developing learning and teaching in technology rich environments. Our argument is inspired by Cultural Historical Activity Theory (CHAT).
Andreas Lund, Trond Eiliv Hauge
doaj