Results 11 to 20 of about 306,713 (303)

Riesz bases and positive operators on Hilbert space [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
It is shown that a normalized Riesz basis for a Hilbert space H (i.e., the isomorphic image of an orthonormal basis in H) induces in a natural way a new, but equivalent, inner product on H in which it is an orthonormal basis, thereby extending the sense ...
James R. Holub
doaj   +2 more sources

Recognition for Positive Behavior as a Critical Youth Development Construct: Conceptual Bases and Implications on Youth Service Development [PDF]

open access: yesThe Scientific World Journal, 2012
Recognition for positive behavior is an appropriate response of the social environment to elicit desirable external behavior among the youth. Such positive responses, rendered from various social systems, include tangible and intangible reinforcements ...
Ben M. F. Law   +2 more
doaj   +2 more sources

Bases for shape preserving curves

open access: yesJournal of Numerical Analysis and Approximation Theory, 2003
The shape preserving properties of a curve in \(\mathbb{R}^2\) depend on the properties of the function basis we use in its representation. Both sign consistent and totally positive bases have shape preserving properties useful in Computer Aided ...
Francesca Pitolli
doaj   +4 more sources

Elementary Atoms, Positive Bases and Reay Systems

open access: yes, 2022
The chapter begins with some basic non-degeneracy characterizations. The concept of an elementary atom is given. It corresponds to the notion of atom when factoring using rational sequences rather than ordinary sequences.
Grynkiewicz, David J.
core   +1 more source

Antibacterial activity for Tin-cephalexin Schiff bases against Bacillus Pumilus and Candida albicans

open access: yesAcademic Science Journal, 2023
In the current study, cephalexin and two beta-lactam antibiotics were combined with four distinct aldehydes: 3-hydroxybenzaldehyde, 4-dimethylaminobenzaldehyde, 4-methoxybenzaldehyde, and 4-bromobenzaldehyde, to synthesize Schiff bases.
Emad yousif ABD   +7 more
doaj   +1 more source

An opportunistic indoors positioning scheme based on estimated positions [PDF]

open access: yes2009 IEEE Symposium on Computers and Communications, 2009
Positioning requirements for mobile nodes in wireless (sensor) networks are largely increasing. However for indoors environments most of the existing solutions are expensive in terms of technology or infrastructure. We propose an indoors positioning scheme in which a static user collects self-estimated positions of collaborating peer nodes within radio
Kang, GuoDong   +2 more
openaire   +2 more sources

Unextendible and uncompletable product bases in every bipartition

open access: yesNew Journal of Physics, 2022
Unextendible product basis is an important object in quantum information theory and features a broad spectrum of applications, ranging from quantum nonlocality to quantum cryptography.
Fei Shi   +3 more
doaj   +1 more source

Factors and Bases of Tendency to “Takfiri Groups”; Case Study in Southern Regions of Kerman Province) [PDF]

open access: yesFaṣlnāmah-i Pizhūhish/hā-yi Rāhburdī-i Siyāsat, 2021
In this research, the factors and bases of tendency to Takfiri groups are examined and empirically tested in the southern regions of Kerman province. The research method for collecting data is quantitative in which questionnaire is used to collect the ...
Reza Khalili   +2 more
doaj   +1 more source

BASES Position Stand on Artificial Intelligence (AI) and Assessment [PDF]

open access: yes, 2023
The Position Stand (PS) that follows represents the considered and formal position of BASES on AI and assessment. This preface captures the reflection of authors on the thought process they went through in drafting this work.
White, Mark   +6 more
core  

On the Total Positivity and Accurate Computations of r-Bell Polynomial Bases

open access: yesAxioms, 2023
A new class of matrices defined in terms of r-Stirling numbers is introduced. These r-Stirling matrices are totally positive and determine the linear transformation between monomial and r-Bell polynomial bases.
Esmeralda Mainar   +2 more
doaj   +1 more source

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