Results 31 to 40 of about 1,990,830 (333)

IMPLEMENTING NATURAL RESOURCES CADASTRAL PLAN IN PASARGADAE DISTRICT OF IRAN BY USING QUICK BIRD IMAGES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Natural Resources are essential for security and sustainable development of each country. Therefore, in order to reach sustainable development, conservation as well as optimum utilization of natural resources, executing of natural resources cadastral ...
G. H. Azhdari, K. Deilami, E. Firooznia
doaj   +1 more source

Abstract Leray–Schauder Type Alternatives and Extensions

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019
We present a Leray–Schauder type alternative for a general class of maps. This enables us to obtain some Birkhoff–Kellogg type results and a Furi–Pera result.
O’Regan Donal
doaj   +1 more source

Leray–Schauder Alternatives for Maps Satisfying Countable Compactness Conditions

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019
In this paper we present Leray–Schauder alternatives for a general class of Mönch type maps.
O’Regan Donal
doaj   +1 more source

Properties of Poincaré half-maps for planar linear systems and some direct applications to periodic orbits of piecewise systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
This paper deals with fundamental properties of Poincaré half-maps defined on a straight line for planar linear systems. Concretely, we focus on the analyticity of the Poincaré half-maps, their series expansions (Taylor and Newton–Puiseux) at the ...
Victoriano Carmona   +3 more
doaj   +1 more source

Coincidence classes in nonorientable manifolds

open access: yesFixed Point Theory and Applications, 2006
We study Nielsen coincidence theory for maps between manifolds of same dimension regardless of orientation. We use the definition of semi-index of a class, review the definition of defective classes, and study the occurrence of defective root classes. We
Daniel Vendrúscolo
doaj   +4 more sources

Essential Oils from Six Aromatic Plants of Langtang National Park: Insights on Their Chemical Constituents via GC-MS Analysis

open access: yesSeparations, 2023
The present work aims to provide an insight on the chemical constituents of essential oils obtained from six aromatic plants of the Langtang National Park (LNP), Nepal. LNP harbors an enriched biodiversity of medicinal and aromatic plants (MAPs).
Samjhana Pradhan   +3 more
doaj   +1 more source

Geometric transformation of cognitive maps for generalization across hippocampal-prefrontal circuits

open access: yesCell Reports, 2023
Summary: The ability to abstract information to guide decisions during navigation across changing environments is essential for adaptation and requires the integrity of the hippocampal-prefrontal circuitry.
Wenbo Tang   +2 more
doaj   +1 more source

Seed plant features, distribution patterns, diversity hotspots, and conservation gaps in Xinjiang, China

open access: yesNature Conservation, 2018
The flora in Xinjiang is unique. Decisions about biodiversity conservation and management based on seed plant diversity hotspots and conservation gaps in Xinjiang are essential to maintain this unique flora.
Jihong Huang   +8 more
doaj   +3 more sources

Partially Isometric Immersions and Free Maps

open access: yes, 2010
In this paper we investigate the existence of ``partially'' isometric immersions. These are maps f:M->R^q which, for a given Riemannian manifold M, are isometries on some sub-bundle H of TM.
D'Ambra, Giuseppina   +2 more
core   +1 more source

Forest cover estimation in Ireland using radar remote sensing: a comparative analysis of forest cover assessment methodologies [PDF]

open access: yes, 2015
Quantification of spatial and temporal changes in forest cover is an essential component of forest monitoring programs. Due to its cloud free capability, Synthetic Aperture Radar (SAR) is an ideal source of information on forest dynamics in countries ...
Barrett, Brian   +5 more
core   +4 more sources

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