Results 21 to 30 of about 397,762 (245)

Using the theories of Fischbein and Shulman to study teachers’ algorithmic knowledge of the concept of the altitude of a triangle

, 2023
Nader HİLF
openaire   +3 more sources

The anthropogenic contribution to atmospheric black carbon concentrations in southern Africa: a WRF-Chem modeling study [PDF]

Atmospheric Chemistry and Physics, 2015
South Africa has one of the largest industrialized economies in Africa. Emissions of air pollutants are particularly high in the Johannesburg-Pretoria metropolitan area, the Mpumalanga Highveld and the Vaal Triangle, resulting in local air pollution ...
F. Kuik, A. Lauer, J. P. Beukes, P. G. Van Zyl, M. Josipovic, V. Vakkari, L. Laakso, G. T. Feig   +7 more
doaj   +1 more source

A NEW CONCEPT OF THE EXTENDED FORM OF PYTHAGORAS THEOREM

JOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES, 2023
According to Pythagoras Theorem : In a right-angled triangle x2 + y2 = z2 , where, base = x, altitude = y, and hypotenuse = z. In the present paper, the author states that x2 + y2 = – z2 is the extended form of the Pythagoras Theorem.
P. Bhattacharyya
semanticscholar   +1 more source

A Consideration of Breast Imagery in Art as Depicted through Western Painting

Archives of Plastic Surgery, 2015
The aim of this study is to consider breast imagery in art as depicted through western painting. Twenty western art paintings were collated. Most of the sample paintings were created from the mid-nineteenth century to the late twentieth century and some ...
Kun Hwang, Ju Yong Park, Se Won Hwang
doaj   +1 more source

Spatial distribution of invasive large fever berry trees (Croton megalobotrys) in Sengwa Wildlife Research Area: Gokwe, Zimbabwe

Environmental Systems Research, 2023
Background The invasion of rangelands by invasive plant species is a major threat to biodiversity in most parts of Zimbabwe posing not only an ecological challenge but a growing management and eradication challenge as well.
Mark Matsa, Kudzai Andrew Mugogo, Innocent Mahakata, Beauty Dzawanda, Roberta Mavugara   +4 more
doaj   +1 more source

On-Line Obstacle Detection, Avoidance, and Mapping of an Outdoor Quadrotor Using EKF-Based Fuzzy Tracking Incremental Control

IEEE Access, 2019
The unknown two-dimensional obstacles, including different shapes, numbers, locations, and in the vicinity of the planning path for an outdoor quadrotor, are on-line detected by a 360-degree Li-Dar Sweep Scanse.
Chih-Lyang Hwang, Hsiu-Ming Wu, Jui-Yu Lai   +2 more
doaj   +1 more source

Tuning rotational magnetization for high frequency magnetoimpedance in micro-patterned triangle spiral magnetic systems

Journal of Science: Advanced Materials and Devices, 2022
Achieving high sensitivity, resolution, and accuracy is desirable and in high demand for magnetic sensor applications. The giant magnetoimpedance (GMI) effect has drawn intensive attention owing to its ultrasensitive response to the magnetic field ...
Ho Anh Tam, Nguyen Van Tuan, Nguyen Thi Ngoc, Le Van Lich, Dinh Van Hai, Manh-Huong Phan, Cheol Gi Kim, Vu Dinh Lam, Do Thi Huong Giang   +8 more
doaj  

Misconception of triangle concept through epistemological mathematics belief

Journal of Physics: Conference Series, 2019
Triangle topics have been studied since preschool. However, there are still pre-services teachers who do not understand the triangle concept. This descriptive qualitative study aims to trace the understanding of the base and the altitude of the triangle ...
Rahaju, Purwanto, I. Parta, S. Rahardjo
semanticscholar   +1 more source

A high-resolution divergence and vorticity dataset in Beijing derived from radar wind profiler mesonet measurements [PDF]

Earth System Science Data
Low-level convergence and cyclonic circulation are one of the most important dynamic variables in governing the initiation and development of convective storms.
X. Guo, J. Guo, D. Meng, Y. Sun, Z. Zhang, Z. Zhang, H. Xu, L. Zeng, J. Chen, N. Li, T. Chen   +10 more
doaj   +1 more source

Extending bioacoustic monitoring of birds aloft through flight call localization with a three‐dimensional microphone array

Ecology and Evolution, 2016
Bioacoustic localization of bird vocalizations provides unattended observations of the location of calling individuals in many field applications. While this technique has been successful in monitoring terrestrial distributions of calling birds, no ...
Phillip M. Stepanian, Kyle G. Horton, David C. Hille, Charlotte E. Wainwright, Phillip B. Chilson, Jeffrey F. Kelly   +5 more
doaj   +1 more source