Results 31 to 40 of about 153,018 (297)

The challenges and opportunities of online learning and teaching at engineering and theoretical colleges during the pandemic

Ain Shams Engineering Journal, 2022
Education has been one of the major areas disrupted by the COVID-19 pandemic. This study aims to assess the impact of the COVID-19 pandemic on users’ (students and faculty members) learning in higher education, examining how engineering students and ...
Emad Mushtaha, Saleh Abu Dabous, Imad Alsyouf, Amr Ahmed, Naglaa Raafat Abdraboh   +4 more
doaj   +1 more source

Big bang of the brane universe [PDF]

, 2001
Big bang of the Friedmann-Robertson-Walker (FRW)-brane universe is studied. In contrast to the spacelike initial singularity of the usual FRW universe, the initial singularity of the FRW-brane universe is point-like from the viewpoint of causality ...
A. Lukas, A. Lukas, A. Lukas, C. Csáki, D. Ida, D. Lynden-Bell, D.J.H. Chung, E.J. Squires, G.W. Gibbons, H. Ishihara, Hideki Ishihara, J. Garriga, J. Rosen, J.M. Cline, L. Randall, M. Gogberashvili, M. Gogberashvili, M. Visser, P. Binétruy, P. Binétruy, P. Horava, T. Shiromizu, V.A. Rubakov, W. Israel   +23 more
core   +3 more sources

Image Seam-Carving by Controlling Positional Distribution of Seams [PDF]

2020 International Conference on Machine Vision and Image Processing (MVIP), 2020
Five pages, 4 ...
Mahdi Ahmadi, Nader Karimi, Shadrokh Samavi   +2 more
openaire   +2 more sources

Coal wall bending calculation and spalling risk classification using Chebyshev polynomials

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
In view of the severe constraints of coal wall spalling and roof caving problems on the productivity release and intelligentization process of large mining height working faces, this paper comprehensively analyzes the key factors affecting coal wall ...
Zhining Zhao, Weidong Pan, Baiyu Hu, Guocheng Zhang, Cang Deng, Xiyuan Qin, Yupei Deng   +6 more
doaj   +1 more source

Randomly Multiplexed Diffractive Lens and Axicon for Spatial and Spectral Imaging

Micromachines, 2020
A new hybrid diffractive optical element (HDOE) was designed by randomly multiplexing an axicon and a Fresnel zone lens. The HDOE generates two mutually coherent waves, namely a conical wave and a spherical wave, for every on-axis point object in the ...
Vijayakumar Anand, Tomas Katkus, Saulius Juodkazis   +2 more
doaj   +1 more source

Closed-circuit television welding- electrode guidance system [PDF]

, 1974
Closed-circuit TV camera is mounted parallel to electrode and moves along with it. Camera is scanned along seam so seam is viewed parallel with scan lines on TV monitor.
Avery, R. M., Smith, H. E., Stephens, D. L., Taylor, R. A., Wall, W. A., Wunsch, H. P.   +5 more
core   +1 more source

Analyzing kinetics of deformation of boundary rocks of mine workings [PDF]

, 2018
Purpose is to analyze nature of rock deformation and to estimate experimentally state of mine workings being supported under the conditions of areas disturbed by coal mining. Methods. The studies involved field instrumental observations within measuring
Nehrii, S, Nehrii, T, Sakhno, I, Sakhno, S   +3 more
core   +1 more source

A Return to Normality: A Descriptive Qualitative Interview Study Exploring the Patient Experience of Gout Flare Resolution

Arthritis Care &Research, EarlyView.
Objective Although the definition of a gout flare is well established, the state of gout flare resolution has not yet been defined. This study aimed to explore patients’ experiences and perceptions of gout flare resolution. Methods Semistructured interviews were conducted with 24 people with gout, guided by open‐ended questions exploring their ...
Sarah Stewart, Anne Horne, Angelo Gaffo, Lisa K. Stamp, N. Lawrence Edwards, Nicola Dalbeth   +5 more
wiley   +1 more source

Single Shot Lensless Interferenceless Phase Imaging of Biochemical Samples Using Synchrotron near Infrared Beam

Biosensors, 2022
Phase imaging of biochemical samples has been demonstrated for the first time at the Infrared Microspectroscopy (IRM) beamline of the Australian Synchrotron using the usually discarded near-IR (NIR) region of the synchrotron-IR beam.
Molong Han, Daniel Smith, Soon Hock Ng, Tomas Katkus, Aravind Simon John Francis Rajeswary, Periyasamy Angamuthu Praveen, Keith R. Bambery, Mark J. Tobin, Jitraporn Vongsvivut, Saulius Juodkazis, Vijayakumar Anand   +10 more
doaj   +1 more source

Comparison of Raised and Flat-Seam Baseballs [PDF]

, 2015
The difference in seam-height between raised and flat-seam baseballs leads to different different drag and spin forces when the balls are thrown by a pitcher.
Carroll, Joseph S.
core   +1 more source