Results 21 to 30 of about 2,172,362 (285)

Project, Projecting, Projection

open access: yes, 2023
On 30 November 2021, the doctoral researchers of the Doctoral School 31 Practices and Theories of Meaning of the University of Paris 8 Vincennes - Saint-Denis organised a study day on the theme "Project, Projecting, Projection". This book gathers seven articles resulting from these academic exchanges, gathered in order to offer an inter- and ...
Bideaux, Kévin   +11 more
openaire   +3 more sources

Quantitative analysis and mathematic modeling of the global outbreak of COVID-19

open access: yesJournal of Infection in Developing Countries, 2020
The coronavirus pandemic is the biggest in the past 100 years, affected over 200 countries and killed over 300 thousand people. To better understand the epidemics in different areas, the progress percentage was generated in this study by dividing ...
Yanyan Jiang   +3 more
doaj   +1 more source

PROJECTION OF THE INFLATION RATE IN PANGKALPINANG CITY USING THE AUTOREGRESSIVE MOVING AVERAGE (ARMA)

open access: yesBarekeng, 2023
Inflation is one of the variables in the macro economy that can affect people's welfare and is defined as a complex phenomenon due to general and continuous price increases.
Desy Yuliana Dalimunthe   +4 more
doaj   +1 more source

Study on Gamma Spectrum Stabilization Method for SiPM-GAGG(Ce) Detector

open access: yesYuanzineng kexue jishu, 2023
Silicon photomultiplier (SiPM) is a new type of photoelectric conversion device with high gain and low power consumption since the 21st century. It consists of thousands of single photon avalanche diodes (SPADs) operating in Geiger mode connected in ...
LEI Wenming;LI Jinglun;AI Xianyun;XIAO Wuyun;ZHANG Jipeng;XIAO Xiong;ZHANG Bin;ZHAO Wei;WANG Ying
doaj  

Projective Measure Without Projective Baire

open access: yesMemoirs of the American Mathematical Society, 2020
We prove that it is consistent (relative to a Mahlo cardinal) that all projective sets of reals are Lebesgue measurable, but there is a $Δ^1_3$ set without the Baire property. The complexity of the set which provides a counterexample to the Baire property is optimal.
Friedman, Sy, Schrittesser, David
openaire   +2 more sources

DOA Estimation for Highly Correlated and Coherent Multipath Signals with Ultralow SNRs

open access: yesInternational Journal of Antennas and Propagation, 2019
In a typical multipath propagation environment, there exists a strong direct path signal accompanying with several weak multipath signals. Due to the strong direct path interference and other masking effects, the Direction-of-Arrival (DOA) of a weak ...
Li Cheng   +3 more
doaj   +1 more source

Comments on orientifold projection in the conifold and SO x USp duality cascade [PDF]

open access: yes, 2001
We study the O3-plane in the conifold. On the D3-brane world-volume we obtain SO x USp gauge theory that exhibits a duality cascade phenomenon. The orientifold projection is determined on the type IIB string side, and corresponds to that of O4-plane on ...
A. Brandhuber   +41 more
core   +2 more sources

Renormalization techniques for quantum spin systems. Ground-state energies [PDF]

open access: yes, 1980
Projection of the Hamiltonian of an antiferromagnetic lattice of spins , without external fields, onto a subspace of the total spinor space gives an approximation for the lowest eigenvalue of this Hamiltonian.
Caspers, W.J.
core   +2 more sources

Two-spinor description of massive particles and relativistic spin projection operators

open access: yes, 2017
On the basis of the Wigner unitary representations of the covering group ISL(2,C) of the Poincar\'{e} group, we obtain spin-tensor wave functions of free massive particles with arbitrary spin.
Isaev, A. P., Podoinitsyn, M. A.
core   +2 more sources

Constructing Fewer Open Cells by GCD Computation in CAD Projection

open access: yes, 2014
A new projection operator based on cylindrical algebraic decomposition (CAD) is proposed. The new operator computes the intersection of projection factor sets produced by different CAD projection orders.
Dai, Liyun, Han, Jingjun, Xia, Bican
core   +1 more source

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