Results 31 to 40 of about 1,765,796 (262)

Learning how to model in science classroom. Key teachers role in supporting the development of students modelling skills

open access: yesEducación Química, 2018
Modelling is a key process in the development of scientific knowledge. In order to conduct a more authentic science education, i.e., to make the processes it entails successively approximate to those of science per se, it is advocated that it should be ...
Rosária Justi
doaj   +1 more source

A Graph Theoretic Approach to General Euler Diagram Drawing [PDF]

open access: yes, 2010
Euler diagrams are used in a wide variety of areas for representing information about relationships between collections of objects. Recently, several techniques for automated Euler diagram drawing have been proposed, contributing to the Euler diagram ...
Howse, John   +2 more
core   +1 more source

Dynamic Euler Diagram Drawing [PDF]

open access: yes, 2004
In this paper we describe a method to lay out a graph enhanced Euler diagram so that it looks similar to a previously drawn graph enhanced Euler diagram. This task is non-trivial when the underlying structures of the diagrams differ.
Rodgers, Peter   +2 more
core   +1 more source

Changing Euler Diagram Properties by Edge Transformation of Euler Dual Graphs [PDF]

open access: yes, 2009
Euler diagrams form the basis of several visual modelling notations, including statecharts and constraint diagrams. Recently, various techniques for automated Euler diagram drawing have been proposed, contributing to the Euler diagram generation problem:
Howse, John   +5 more
core   +1 more source

Three dimensional extension of Bresenham’s algorithm with Voronoi diagram [PDF]

open access: yes, 2010
Bresenham’s algorithm for plotting a two-dimensional line segment is elegant and efficient in its deployment of mid-point comparison and integer arithmetic. It is natural to investigate its three-dimensional extensions.
Woo, Tony   +3 more
core   +1 more source

Pengaruh Penerapan Diagram pada Pembelajaran STEM terhadap Kemampuan Pemecahan Masalah Siswa Materi Suhu dan Kalor

open access: yes, 2021
Penelitian ini bertujuan untuk mengetahui pengaruh penerapan diagram dalam pembelajaran STEM terhadap kemampuan pemecahan masalah siswapada topik materi suhu dan kalor. Metode penelitian yang digunakan adalah mixed methods.
Parno, Parno   +2 more
core   +2 more sources

Late diagnosis of Ebstein anomaly after pregnancy: A rare case report

open access: yesQanun Medika: Jurnal Kedokteran Fakultas Kedokteran Universitas Muhammadiyah Surabaya
Congenital heart disease is a concerning disease among those affected since it affects the patient's quality of life. One of which is Ebstein Anomaly (EA), with a prevalence of 1 in 200,0000 births with a clinical characteristic of displacement of the ...
Jesse Lesmana   +4 more
doaj   +1 more source

Torque prediction using the flux-MMF diagram in AC, DC, and reluctance motors [PDF]

open access: yes, 1996
This paper uses the flux-MMF diagram to compare and contrast the torque production mechanism in seven common types of electric motor. The flux-MMF diagram is a generalized version of the flux-linkage versus current (ψ-i) diagram for switched-reluctance ...
Deodhar, R.P.   +3 more
core   +1 more source

Integrating Reliable Value into the Process Modeling of High-Speed Railway Timetabling with Redundancy Allocation

open access: yesMathematics
As the development of High-Speed Railways (HSRs) shifts from scale expansion to quality and efficiency, high-density timetables face increasing challenges regarding operational stability.
Huizhang Xu   +5 more
doaj   +1 more source

Achieving broadband near-infrared luminescence in Cr3+-Activated Y2Mg2Al2Si2O12 phosphors via multi-site occupancy

open access: yesAdvanced Powder Materials
Cr3+-activated near-infrared (NIR) phosphors are key for NIR phosphor-converted light emitting diodes (NIR pc-LED). While, the site occupancy of Cr3+ is one of the debates that have plagued researchers.
Gui-Hua Li   +6 more
doaj   +1 more source

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