Results 21 to 30 of about 1,068,414 (309)

Edge-detection applied to moving sand dunes on Mars [PDF]

open access: yes, 2013
Here we discuss the application of an edge detection filter, the Sobel filter of GIMP, to the recently discovered motion of some sand dunes on Mars. The filter allows a good comparison of an image HiRISE of 2007 and an image of 1999 recorded by the Mars ...
Sparavigna, Amelia Carolina
core   +2 more sources

The mechanism of pyridine hydrogenolysis on molybdenum-containing catalysts : IV. The conversion of piperidine [PDF]

open access: yes, 1973
The conversion of piperidine was investigated on a CoO-MoO3-Al2O3 catalysts as a function of the temperature, reaction time, initial piperidine partial pressure and the hydrogen pressure.\ud \ud At 60 atm of hydrogen and conversions below 50% piperidine ...
Mars, P., Neyens, W.J., Sonnemans, J.
core   +2 more sources

Genetic Parameters and the Impact of Off-Types for Theobroma cacao L. in a Breeding Program in Brazil

open access: yesFrontiers in Plant Science, 2017
Breeding programs of cacao (Theobroma cacao L.) trees share the many challenges of breeding long-living perennial crops, and genetic progress is further constrained by both the limited understanding of the inheritance of complex traits and the prevalence
Ashley DuVal   +9 more
doaj   +1 more source

Introduction to TIPS: a theory for creative design [PDF]

open access: yes, 1995
A highly intriguing problem in combining artificial intelligence and engineering design is automation of the creative and innovative phases of the design process.
Mars, N.J.I.   +2 more
core   +4 more sources

On the use of text augmentation for stance and fake news detection

open access: yesJournal of Information and Telecommunication, 2023
Data Augmentation (DA) aims at synthesizing new training instances by applying transformations to available ones. DA has several well-known benefits such as: (i) increasing generalization ability; (ii) preventing data scarcity; and (iii) helping resolve ...
Ilhem Salah   +2 more
doaj   +1 more source

Distributed deep learning approach for intrusion detection system in industrial control systems based on big data technique and transfer learning

open access: yesJournal of Information and Telecommunication, 2023
Industry 4.0 refers to a new generation of connected and intelligent factories that is driven by the emergence of new technologies such as artificial intelligence, Cloud computing, Big Data and industrial control systems (ICS) in order to automate all ...
Ahlem Abid, Farah Jemili, Ouajdi Korbaa
doaj   +1 more source

Additions to the “Martian Flora”: new botanical records from the Mars Desert Research Station, Utah [PDF]

open access: yesBiodiversity Data Journal, 2020
The Mars Desert Research Station (MDRS) is a Mars-simulation campus set in a Martian planetary analogue in southern Utah. Despite a long history of astrobiology research, collections-based taxonomic inventories of the macro-level biodiversity around the ...
Paul Sokoloff   +4 more
doaj   +3 more sources

Accelerating expansion and change of signature

open access: yes, 2007
We show that some types of sudden singularities admit a natural explanation in terms of regular changes of signature on brane-worlds in AdS$_{5}$. The present accelerated expansion of the Universe and its possible ending at a sudden singularity may ...
Cattoën   +5 more
core   +1 more source

The influence of the precipitation rate on the properties of porous chromia [PDF]

open access: yes, 1975
The properties were studied of heated (320°C) chromia samples, prepared by two precipitation methods: \ud \ud 1. (1) addition of ammonia to chromium salt solutions,\ud 2.
Keijzer, H. de, Mars, P., Sonnemans, J.
core   +2 more sources

Mars Image Analysis [PDF]

open access: yes, 2004
This lesson plan details an activity designed to put students in the role of scientists in analyzing the geological processes that occur on terrestrial planets - i.e. Earth and Mars.

core   +1 more source

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