Results 31 to 40 of about 43,265 (334)

Computationally Data-Independent Memory Hard Functions [PDF]

open access: yes, 2019
Memory hard functions (MHFs) are an important cryptographic primitive that are used to design egalitarian proofs of work and in the construction of moderately expensive key-derivation functions resistant to brute-force attacks. Broadly speaking, MHFs can
Ameri, Mohammad Hassan   +2 more
core   +2 more sources

PROSPECTS OF THE USE OF GRADIENT GRATES IN THE LASERS OF TERAHERTZ RANGE [PDF]

open access: yesRadio Physics and Radio Astronomy, 2018
Purpose: The improvement and development of terahertz radiation sources is required for the further development of the terahertz frequency range. Submillimeter lasers are one of the few sources of terahertz radiation.
M. I. Dzyubenko   +3 more
doaj   +1 more source

Interaction between luminance gratings and disparity gratings

open access: yesSpatial Vision, 2004
It was shown from geometry and photographic measurement that the shading pattern for a sinusoidal corrugated surface of frequency f approximates to a luminance-defined grating of frequency f, 2f or f + 2f in specific relative phase. It was confirmed that a luminance grating modifies the appearance of a suprathreshold stereoscopic corrugated surface ...
Michael, Wright, Tim, Ledgeway
openaire   +2 more sources

On-Line Computer Control of a Cement Kiln

open access: yesMeasurement + Control, 1968
The installation and operation of a GEC 90-2 digital computer for the automatic control of a 1500 ton per day Humboldt kiln, including a Fuller double grate combination cooler with two grates, is described. An appreciation of fuel savings is given.
Arthur B. Aune PhD
doaj   +1 more source

The Flexibility of Pusher Furnace Grate

open access: yesArchives of Foundry Engineering, 2016
The lifetime of guide grates in pusher furnaces for heat treatment could be increased by raising the flexibility of their structure through, for example, the replacement of straight ribs, parallel to the direction of grate movement, with more flexible ...
Słowik J.A., Drotlew A., Piekarski B.
doaj   +1 more source

Energy efficiency of cement finish grinding in a dry batch ball mill. [PDF]

open access: yes, 2006
Dry grinding experiments on cement clinker were carried out using a laboratory batch ball mill equipped with torque measurement. The specific energy was found to be dependent on operating parameters and clinker environment.
Belaadi, Salah   +2 more
core   +3 more sources

Schoolbooks [PDF]

open access: yes, 2010
According to UNESCO estimates, there are approximately one billion people in the world who can neither read nor write. One sixth of the world population has never seen a schoolbook.
Baldzuhn, Michael
core   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Methodenbericht. Schriftlich-postalische Befragung im Projekt „QuartiersNETZ“ [PDF]

open access: yes, 2017
Der Bericht beschreibt das methodische Vorgehen einer im Rahmen des Projekts „Ältere als (Ko-)Produzenten von Quartiersnetzwerken im Ruhrgebiet (QuartiersNETZ)“ von der Fachhochschule Dortmund durchgeführten schriftlichen Befragung.
Grates, Miriam, Rüßler, Harald
core  

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