Results 21 to 30 of about 3,057,322 (296)

No Nonlocality. No Fractional Derivative [PDF]

open access: yesCommunications in Nonlinear Science and Numerical Simulation. 2018. Vol.62. P.157-163, 2018
The paper discusses the characteristic properties of fractional derivatives of non-integer order. It is known that derivatives of integer orders are determined by properties of differentiable functions only in an infinitely small neighborhood of the considered point.
arxiv   +1 more source

Changes in land use are associated with the accumulation of soil phytolith-occluded organic carbon

open access: yesEcological Indicators, 2023
Organic carbon occluded in phytoliths is extremely stable and plays important roles in long-term preservation of soil and stable carbon sequestration in terrestrial ecosystems.
Linjiao Wang, Ke Wang, Maoyin Sheng
doaj  

Semantic Primes of Perception from the Perspective of Word Formation

open access: yesLinguaculture, 2018
The object of the present study is the domain of Greimassian semiotic theory. Several previous findings on supraindividual phenomena were summarized and theoretical underpinnings of the soi-disant thymic category were extended.
Anna Zaslonkina
doaj   +1 more source

Verification of the Necessity of the Tolyl Group of PF-543 for Sphingosine Kinase 1 Inhibitory Activity

open access: yesMolecules, 2020
PF-543, the most potent sphingosine kinase (SK) inhibitor, does not demonstrate effective anticancer activity in some cancer cells, unlike other known SK1 inhibitors.
Su Bin Kim   +11 more
doaj   +1 more source

The derivative expansion approach to the interaction between close surfaces [PDF]

open access: yes, 2014
The derivative expansion approach to the calculation of the interaction between two surfaces, is a generalization of the proximity force approximation, a technique of widespread use in different areas of physics.
Fosco, C. D.   +2 more
core   +2 more sources

Derivatives as security against market risk on the example of the selected companies

open access: yesCopernican Journal of Finance & Accounting, 2013
Company operating in current economic conditions are exposed to a series of different kinds of risk. In order to secure against some of them, firms may apply hedging, i.e. use of derivative instruments.
Jarosław Pawłowski
doaj   +3 more sources

A derivative for complex Lipschitz maps with generalised Cauchy–Riemann equations [PDF]

open access: yes, 2014
We introduce the Lipschitz derivative or the L-derivative of a locally Lipschitz complex map: it is a Scott continuous, compact and convex set-valued map that extends the classical derivative to the bigger class of locally Lipschitz maps and allows an ...
Edalat, A
core   +1 more source

Rising of efficiency of enciphering on the basis of summation of products

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014
The properties of the code numbers made on the basis of the sums with products of weight and free components are considered. Free components appear here, at first, as equal powers of members of an arithmetical progression, secondly, as members of a ...
Alexander I Nikonov
doaj   +1 more source

Design, Synthesis, and Activity Assays of Cyclin-Dependent Kinase 1 Inhibitors With Flavone Scaffolds

open access: yesFrontiers in Chemistry, 2022
Cyclin-dependent kinase 1 (CDK1) plays an indispensable role in the whole cell cycle. It has become a new target for cancer therapy. According to the binding mode of a pan-CDK inhibitor, flavopiridol with CDK1, and our previous work, a new series of ...
Lanlan Fu   +4 more
doaj   +1 more source

Jordan-Hölder theorems for derived categories of derived discrete algebras [PDF]

open access: yes, 2015
For any positive integer $n$, $n$-derived-simple derived discrete algebras are classified up to derived equivalence. Furthermore, the Jordan-H\"older theorems for all kinds of derived categories of derived discrete algebras are obtained.
arxiv   +1 more source

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