Results 221 to 230 of about 1,214,867 (266)

Image statistics and the perception of surface qualities

Nature, 2007
The world is full of surfaces, and by looking at them we can judge their material qualities. Properties such as colour or glossiness can help us decide whether a pancake is cooked, or a patch of pavement is icy. Most studies of surface appearance have emphasized textureless matte surfaces, but real-world surfaces, which may have gloss and complex ...
Isamu, Motoyoshi, Shin'ya, Nishida, Lavanya, Sharan, Edward H, Adelson   +3 more
openaire   +2 more sources

Surface roughening, surface melting and crystal quality

Faraday Discussions, 1993
The modelling of crystal surfaces, both in equilibrium and during growth, is now at a stage where the relation between surface structure and crystal quality are accessible for future studies. The classical point of view is that the roughening transition marks the transition from step growth to rough growth with qualitative changes in the growth rate ...
openaire   +1 more source

Spectroscopic Evaluation of the Surface Quality of Apple

Journal of Agricultural and Food Chemistry, 2003
Different spectroscopic techniques based on infrared and Raman were used to evaluate the natural wax and related surface quality of apple fruit. Transmission near-infrared (NIR) spectroscopy was applied to solutions of single wax components and extracted apple wax. Fourier transform infrared (FTIR) spectroscopy was used for transmission measurements of
E A, Veraverbeke, J, Lammertyn, B M, Nicolaï, J, Irudayaraj   +3 more
openaire   +2 more sources

Surface quality assessment of subdivision surfaces on programmable graphics hardware

Proceedings Shape Modeling Applications, 2004., 2004
We propose a method of subdivision surface quality assessment by reflection lines on programmable graphics hardware (GPU). Using reflection lines is effective for surface quality assessment because the shapes of these lines are changed according to a slight variance of surface shapes.
Yusuke Yasui, Takashi Kanai
openaire   +1 more source

Surface Water Quality Assessment by Environmetric Methods

Environmental Monitoring and Assessment, 2006
This environmetric study deals with the interpretation of river water monitoring data from the basin of the Buyuk Menderes River and its tributaries in Turkey. Eleven variables were measured to estimate water quality at 17 sampling sites. Factor analysis was applied to explain the correlations between the observations in terms of underlying factors ...
Boyacioglu, Huelya, Boyacioglu, Hayal
openaire   +3 more sources

Meaningful Surface Roughness and Quality Tolerances

International Optical Design Conference and Optical Fabrication and Testing, 2010
Meaningful surface quality and roughness tolerances can be derived based on physics and requirements rather than history and inertia. This paper describes how to develop such specifications for these annoying parameters.
openaire   +1 more source

Evaluation of WEDM Surface Quality

Advanced Materials Research, 2010
The formation of WEDM surface is a complicated process. There are many factors which make machined surface topography have the characteristics of complex and irregular, and impact using performance of parts. The work investigated microscopic features of the WEDM surface topography based on power spectral density and fractal theory, and proposed power ...
Lei Geng, Hua Yan Zhong
openaire   +1 more source

Quality of the Surface Waters in the Parma Valley of Italy

International Journal of Environmental Studies, 1987
Over the last three decades, the quality of the Val Parma water courses has undergone a drastic deterioration that can be linked to industrial and demographic transformation which have occurred there. From 1951 to 1981 there was a 360% increase in the pollution load by human activities with most of that increase occurring between 1961 and 1971. In 1976
openaire   +2 more sources

Effects of Surface Quality on CO2 Optics

Third Topical Meeting on Optical Interference Coatings, 1984
The purpose of this study is to give a practical understand ing of the effect of abnormalities found on various types of thin film coatings on different types of substrates used at 10.6 μm.
openaire   +1 more source

On the quality and integrity of broached surfaces

The International Journal of Advanced Manufacturing Technology, 2018
Surface integrity or in other words surface quality is a general term that is widely used in academia and industry to describe the characteristics and attributes of the workpiece surface after being modified or altered by manufacturing processes. Quality and integrity of the workpiece surface is a key design factor particularly when the part is likely ...
openaire   +1 more source