Results 21 to 30 of about 871 (252)

Assessing uncertainties in land cover projections [PDF]

open access: yesGlobal Change Biology, 2016
AbstractUnderstanding uncertainties in land cover projections is critical to investigating land‐based climate mitigation policies, assessing the potential of climate adaptation strategies and quantifying the impacts of land cover change on the climate system.
Alexander, P.   +37 more
openaire   +8 more sources

Quasi-projective covers of right $S$-acts [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2014
In this paper $S$ is a monoid with a left zero and $A_S$ (or $A$) is a unitary right $S$-act. It is shown that a monoid $S$ is right perfect (semiperfect) if and only if every (finitely generated) strongly flat right $S$-act is quasi-projective.
Mohammad Roueentan, Majid Ershad
doaj  

ORBIFOLD GROUPS, QUASI-PROJECTIVITY AND COVERS [PDF]

open access: yesJournal of Singularities, 2012
20 ...
Bartolo, Enrique Artal   +2 more
openaire   +2 more sources

Semi-perfect and F-semi-perfect modules

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
A module is semi-perfect iff every factor module has a projective cover. A module M=A+B (for submodules A and B) is amply supplemented iff there exists a submodule A′ (called a supplement of A) of B such M=A+A′ and A′ is minimal with this property.
David J. Fieldhouse
doaj   +1 more source

DYNAMICS OF ILLUMINANCE INCIDENT ON THE LANW SURFACE IN THE SHADE OF VARIOUS WOODY SPECIES

open access: yesЮг России: экология, развитие, 2019
Aim. This paper is aimed at studying the relative light conditions (RLC) for lawns in the crown shade of light‐requiring and shade‐tolerant trees from the landscaping sites of Stavropol.Methods.
L. A. Grechushkina‐Sukhorukova
doaj   +1 more source

Categorical Properties of Soft Sets

open access: yesThe Scientific World Journal, 2014
The present study investigates some novel categorical properties of soft sets. By combining categorical theory with soft set theory, a categorical framework of soft set theory is established.
Min Zhou, Shenggang Li, Muhammad Akram
doaj   +1 more source

ORTHORECTIFICATION BY USING GPGPU METHOD [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Thanks to the nature of the graphics processing, the newly released products offer highly parallel processing units with high-memory bandwidth and computational power of more than teraflops per second.
H. Sahin, S. Kulur
doaj   +1 more source

Classes of modules closed under projective covers

open access: yesOpen Mathematics
In this work, we study some classes of modules closed under submodules, quotients, and projective covers, even if the left projective cover of an arbitrary left module not always exists. We obtain a characterization of artinian principal ideal rings when
Cejudo-Castilla César   +2 more
doaj   +1 more source

Monodromy of cyclic coverings of the projective line [PDF]

open access: yesInventiones mathematicae, 2013
We show that the image of the pure braid group under the monodromy action on the homology of a cyclic covering of degree d of the projective line is an arithmetic group provided the number of branch points is sufficiently large compared to the degree.
openaire   +3 more sources

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk   +10 more
wiley   +1 more source

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