Results 11 to 20 of about 2,172,362 (285)

Projected and Near-Projected Embeddings [PDF]

open access: yesJournal of Mathematical Sciences, 2021
A stable smooth map $f:N\to M$ is called "$k$-realizable" if its composition with the inclusion $M\subset M\times\Bbb R^k$ is $C^0$-approximable by smooth embeddings; and a "$k$-prem" if the same composition is $C^\infty$-approximable by smooth embeddings, or equivalently if $f$ lifts vertically to a smooth embedding $N\to M\times\Bbb R^k$.
Akhmetiev, P. M., Melikhov, S. A.
openaire   +2 more sources

Sur le traitement des vins aux échangeurs d'ions

open access: yesOENO One, 1972
Parmi la grande diversité des moyens dont on dispose pour le traitement et la stabilisation du vin, on peut mentionner aussi la possibilité d'emploi des échangeurs d'ions synthétiques. Mais cet emploi dans l'œnologie moderne est un problème discuté.
Tz. GANEVA, V. LITCHEV
doaj   +1 more source

Impact of human papillomavirus vaccine on cervical cancer epidemic: Evidence from the surveillance, epidemiology, and end results program

open access: yesFrontiers in Public Health, 2023
IntroductionSince 2006, the human papillomavirus (HPV) vaccine has been recommended for females aged 9–26 years in the United States. Aiming to evaluate the early effect of the HPV vaccine on cervical cancer, this study assessed the incidence of cervical
Jiao Pei   +8 more
doaj   +1 more source

DOMESTIC DEMAND ANALYSIS FOR THE AVAILABILITY OF CLEAN WATER AT MAULAFA DISTRICT

open access: yesJurnal Teknik Sipil, 2022
The rapid population growth of an area is usually followed by an increase in water demand. The current availability of water is not necessarily able to meet the increasing demand for clean water.
Fransiska C.N. Harmans   +2 more
doaj   +1 more source

Project Planning, Project Success and Project Risk [PDF]

open access: yesGlobal Social Sciences Review, 2019
We are investigating the relation of project planning with project success and introduce project risk as a moderator. We examines how different dimensions (organizational, people, technical and technology, project management, economic and stakeholder) of project risk determine this relationship.
Shahwali Khan   +2 more
openaire   +2 more sources

Modelling and projections of the COVID-19 epidemic and the potential impact of social distancing in Cameroon

open access: yesJournal of Public Health in Africa, 2021
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) disease (COVID-19) pandemic continues to be a global health problem with a significant impact in Cameroon.
Solange W. Youdom   +2 more
doaj   +1 more source

Between the Profiles Pay Per View and the Protection of Personal Data: the Product is You

open access: yesAdvances in Distributed Computing and Artificial Intelligence Journal, 2017
Perhaps in the past was difficult to imagine that the moment in which someone could register each purchase that has been made, each book that has been read or each thing that has been said would come.
Ana Karin CHÁVEZ VALDIVIA
doaj   +1 more source

Uncertainty Analysis of Neutron Diffusion Eigenvalue Problem Based on Reduced-order Model

open access: yesYuanzineng kexue jishu, 2023
In order to improve the efficiency of core physical uncertainty analysis based on sampling statistics, the proper orthogonal decomposition (POD) and Galerkin projection method were combined to study the application feasibility of reduced-order model ...
In order to improve the efficiency of core physical uncertainty analysis based on sampling statistics, the proper orthogonal decomposition (POD) and Galerkin projection method were combined to study the application feasibility of reduced-order model based on POD-Galerkin method in core physical uncertainty analysis. The two-dimensional two group TWIGL benchmark question was taken as the research object, the key variation characteristics of the core flux distribution were extracted under the finite perturbation of the group constants of each material region, and the full-order neutron diffusion problem was projected on the variation characteristics to establish a reduced-order neutron diffusion model. The reduced-order model was used to replace the full-order model to carry out the uncertainty analysis of the group constants of the material region. The results show that the bias of the mathematical expectation of keff calculated by reduced-order and full-order models is close to 1 pcm. In addition, compared with the calculation time required for uncertainty analysis of full-order model, the analysis time of reduced-order model (including the calculation time of the full-order model required for the construction of reduced-order model) is only 11.48%, which greatly improves the efficiency of uncertainty analysis. The biases of mathematical expectation of keff calculated by reduced-order and full-order models based on Latin hypercube sampling and simple random sampling are less than 8 pcm, and under the same sample size, the bias from the Latin hypercube sampling result is smaller. From the TWIGL benchmark test results, under the same sample size, Latin hypercube sampling method is more recommended for POD-Galerkin reduced-order model.
doaj  

On evolutionary ray-projection dynamics [PDF]

open access: yes, 2011
We introduce the ray-projection dynamics in evolutionary game theory by employing a ray projection of the relative fitness (vector) function, i.e., a projection unto the unit simplex along a ray through the origin.
Joosten, Reinoud, Roorda, Berend
core   +4 more sources

Projects, Project Capabilities and Project Organizations [PDF]

open access: yes, 2011
This chapter clarifies our understanding of the project-based firm (PBF) by sharpening the theoretical foundations of project capabilities. It emphasizes the differences between project capabilities that eliminate variance in project outcomes (to control costs and add value) and economies of scale that reduce costs across multiple projects.
Nightingale, P.   +2 more
openaire   +2 more sources

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