Results 31 to 40 of about 306,713 (303)
PLoS ONE, 2020 A facile method has been developed for the synthesis of Schiff bases derived from substituted and unsubstituted 3-amino- and 4-amino-1,2,4-triazoles. Condensation of the aminotrizoles with a variety of aromatic aldehydes afforded desired Schiff bases in ...
Aeysha Sultan +11 more
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Bases, positions and computations [PDF]
Philosophical Transactions of the Royal Society B: Biological SciencesAncient sources attest to the introduction of two families of numeration systems using place-value notations. In such systems, the base and its powers are always represented using position. The existence of a base of this kind is reflected by the repetitive character of the algorithms drawing on the place-value notations to execute operations ...
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Metasurface Based Positional Modulation Design [PDF]
IEEE Access, 2020 Directional modulation (DM) can transmit information to the desired direction or directions with known constellation mappings, but with scrambled ones in other directions. However, one problem of the design is that when desired receivers and eavesdroppers are in the same transmission direction, their beam responses cannot be distinguished, as steering ...
Bo Zhang 0033 +6 more
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Computation of replicated exercise prices by using positive bases
, 2016 A procedure is provided for computing the replicated exercise prices of a given portfolio. We highlight a matrix-based framework for analyzing option replication.
Vasilios Katsikis
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An Optimal Property of B-Bases for the Modified Richardson Method
AxiomsA space with a normalized totally positive basis has a unique normalized B-basis. In computer-aided geometric design, normalized B-bases present optimal shape-preserving properties.
Juan Manuel Peña
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Bases for Positive Continuous Functions
Journal of the London Mathematical Society, 1990 Let X be the unit circle \(X=\{\xi |\) \(\xi =e^{i\theta}\), \(0\leq \theta \leq 2\pi\) and for \(z\in \Delta =\{z|\) \(| z| 0, \] in the sense that for every \(\theta\) both sides of (*) are equal and finite or both are \(+\infty\). In Theorem 1 an equivalent condition is shown to be that every positive continuous f(\(\theta)\) can be uniformly ...
Hayman, W, Lyons, T
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The Global PsychotherapistThe article focuses on a significant increase in emotional and behavioral disorders in recent years. The situation with mental health of the population has worsened due to the coronavirus and military conflicts.
Borys Demyanenko, Iryna Uninets
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On Hopf Algebras with Positive Bases
Journal of Algebra, 2001 We show that if a finite dimensional Hopf algebra over ${\bf C}$ has a basis such that all the structure constants are non-negative, then the Hopf algebra must be given by a finite group $G$ and a factorization $G=G_+G_-$ into two subgroups. We also show that Hopf algebras in the category of finite sets with correspondences as morphisms are classified ...
Lu, JH, Yan, M., Zhu, YC
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Kernel-Based Identification of Positive Systems [PDF]
2019 IEEE 58th Conference on Decision and Control (CDC), 2019 2019 IEEE 58th Conference on Decision and Control (CDC)
Mohammad Khosravi, Roy S. Smith
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele +19 more
wiley +1 more source