Results 11 to 20 of about 6,681 (198)

Knots in Collapsible and Non-Collapsible Balls [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2013
We construct the first explicit example of a simplicial 3-ball $B_{15,66}$ that is not collapsible. It has only 15 vertices. We exhibit a second 3-ball $B_{12,38}$ with 12 vertices that is collapsible and not shellable, but evasive. Finally, we present the first explicit triangulation of a 3-sphere $S_{18, 125}$ (with only 18 vertices) that is not ...
Frank H. Lutz, Bruno Benedetti
openaire   +3 more sources

Analysis of the Mechanism of Ground Fissures in the Nairobi–Malaba Railway Rift Valley Area in Kenya

open access: yesFrontiers in Earth Science, 2022
During the rainy season from March to May 2018, four ground fissures were generated in the rift valley area along the first phase of the Nairobi–Malaba Railway in Kenya, among which the ground fissures B3 highway, DK76, and DK77 were larger in scale ...
Bing Hao   +6 more
doaj   +1 more source

Gravitational collapse: expanding and collapsing regions [PDF]

open access: yesGeneral Relativity and Gravitation, 2010
12 pages, 4 figures, accepted for publication in Gen.
Sharif, M., Abbas, G.
openaire   +2 more sources

Effect of Adding Fine Gravel and Cement on Settlement of Sabkha Soil [PDF]

open access: yesEngineering and Technology Journal, 2012
Sabkha soil is one of the many types of collapsible soils and in turn is on of the many types of problematic soils. This soil is totally having good engineering properties when dry ,i.e ,moderately bearing capacity with low settlement .But once are ...
Hassan Obaid Abbas
doaj   +1 more source

Timeline to collapse  

open access: yes, 2022
Contemporary rates of biodiversity decline emphasize the need for reliable ecological forecasting, but cur-rent methods vary in their ability to predict the declines of real-world populations. Acknowledging that stress acts at the individual level, and that it is the sum of these individual-level effects which drives popu-lations to collapse, shifts ...
Francesco Cerini   +2 more
openaire   +1 more source

Feature Collapse

open access: yesCoRR, 2023
We formalize and study a phenomenon called feature collapse that makes precise the intuitive idea that entities playing a similar role in a learning task receive similar representations. As feature collapse requires a notion of task, we leverage a simple but prototypical NLP task to study it.
Thomas Laurent 0001   +2 more
openaire   +3 more sources

Application of sand drain immersion tests on collapsible loess

open access: yesYantu gongcheng xuebao, 2018
With the further development of China's western development strategy, more and more projects are constructed in collapsible loess area. The loess area is characterized by wide distribution, large thickness and different strong collapsibilities and ...
WANG Yong-xin 1, SHAO Sheng-jun 1,2, HAN Chang-ling 3, LI Jun 1
doaj   +1 more source

Collapsibility and microscopic mechanism of intact loess at different depths in Xining area

open access: yesYantu gongcheng xuebao, 2019
The collapsibility of the intact loess at different depths in Xining area is studied through the laboratory immersion compression tests. Combined with the scanning electron microscopy (SEM) and the particle and crack image recognition and analysis system
CUI Jing-yu , ZHANG Wu-yu , XIE Bang-long , JI Xi , JI Gang-ao
doaj   +1 more source

Application of slag compound as a curing agent for dealing with dissolve collapsibility characteristic in coastal saline soil

open access: yesChemical Engineering Transactions, 2017
High concentration of soluble salt in coastal saline soil can dissolve soil particles to some extent. In this paper, the application of slag compound as a curing agent (referred to as SM) for dealing with dissolve collapsibility in saline soil is ...
Chengbin Liu   +3 more
doaj   +1 more source

Inferior Vena Cava Diameter and Collapsibility Index measurements by Ultrasound and its Correlation with Central Venous Pressure in Critically Ill Patients [PDF]

open access: yesAl-Azhar International Medical Journal, 2023
Background: Assessment of intravascular volume status is an essential for the diagnosis and management of critically-ill patients. Central venous pressure (CVP), is an invasive measure used for this purpose.
Hend Maghraby   +5 more
doaj   +1 more source

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