Results 31 to 40 of about 1,397,584 (286)

The role of education in promoting circular economy

open access: yesInternational Journal of Sustainable Engineering, 2023
The environmental problems caused by a linear economy system and the exploitation of natural resources have been known well over 50 years. Although a great deal has been done, there is a contradiction between increasing consumerism and the concrete ...
Maija Tiippana-Usvasalo   +2 more
doaj   +1 more source

Applications of implicit constitutive theory for describing the elastic response of rocks and concrete

open access: yesArchives of Mechanics, 2022
An implicit constitutive relation is proposed for elastic bodies, when the gradient of the displacement is assumed to be very small, and as a result the strains are small.
R. Bustamante, K.R. Rajagopal
doaj   +1 more source

Numerical analysis of two and three dimensional buoyancy driven water-exit of a circular cylinder

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2014
With the development of the technology of underwater moving bodies, the need for developing the knowledge of surface effect interaction of free surface and underwater moving bodies is increased. Hence, the two-phase flow is a subject which is interesting
Shahab Moshari   +2 more
doaj   +3 more sources

Periodic Solutions for Circular Restricted -Body Problems [PDF]

open access: yesAbstract and Applied Analysis, 2013
For circular restricted -body problems, we study the motion of a sufficiently small mass point (called the zero mass point) in the plane of equal masses located at the vertices of a regular polygon. By using variational minimizing methods, for some , we prove the existence of the noncollision periodic solution for the zero mass point with some fixed ...
Xiaoxiao Zhao, Wei Li, Peng Wang
openaire   +2 more sources

Circular on guidelines for Implementation of the FY 2021/2022 and the Medium-Term Budget [PDF]

open access: yes, 2021
This Circular is issued m accordance to Section 12 of the Public Finance Management Act (PFMA), 2012. The purpose of the Circular is to provide guidance on the implementation of the FY202 l/22 and the Medium­-Term Budget and shall apply to all Ministries,

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The stability of orbit of a planet in the field of binary stars

open access: yesPhysical Sciences and Technology, 2020
In the paper, we consider the motion of a planet in the field of the binary stars in the theory of general relativity (GR), when all bodies have their own rotation. We consider that the third body moves in the plan of massive two bodies.
S. Toktarbay, A. Talkhat, A. Orazymbet
doaj  

On the Uniqueness of Co-circular Four Body Central Configurations

open access: yesArchive for Rational Mechanics and Analysis, 2021
We study central configurations lying on a common circle in the Newtonian four-body problem. Using a topological argument we prove that there is at most one co-circular central configuration for each cyclic ordering of the masses on the circle.
openaire   +3 more sources

Quasi circular orbits around prolate bodies

open access: yesMonthly Notices of the Royal Astronomical Society, 2021
ABSTRACT Recent observations of stellar occultations have revealed rings of particles around non-planetary bodies of the Solar system. These bodies are irregular and can be modelled by ellipsoids. In the context of numerical integrations for the study of studying the region close to these ellipsoidal bodies, it is known that the use ...
T Ribeiro   +4 more
openaire   +2 more sources

High-Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three-Body Problem

open access: yesAdvances in Astronomy, 2016
Terms in the analytic expansion of the doubly averaged disturbing function for the circular restricted three-body problem using the Legendre polynomial are explicitly calculated up to the fourteenth order of semimajor axis ratio (α) between perturbed and
Takashi Ito
doaj   +1 more source

Circular on Development of the Medium-Term Revenue Strategy (MTRS) for FY 2023/2024-2026-2027

open access: yes, 2022
The purpose of this Circular is to inform the Government Ministries, Departments and Agencies (MDAs) and the County Governments of the Government's intention to develop a Strategy to enhance revenue mobilization to facilitate implementation of Government

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