57 research outputs found
An analog of Chang inversion formula for weighted Radon transforms in multidimensions
In this work we study weighted Radon transforms in multidimensions. We
introduce an analog of Chang approximate inversion formula for such transforms
and describe all weights for which this formula is exact. In addition, we
indicate possible tomographic applications of inversion methods for weighted
Radon transforms in 3D
Verification of event-driven software systems using the specification language of cooperating automata objects
The CIAO (Cooperative Interaction Automata Objects) specification language is intended to describe the behavior of distributed and parallel event-driven systems. This class of systems includes various software and hardware systems for control, monitoring, data collection, and processing. The ability to verify compliance with requirements is desirable competitive advantage for such systems. The CIAO language extends the concept of state machines of the UML (Unified Modeling Language) with the possibility of cooperative interaction of several automata through strictly defined interfaces. The cooperative interaction of automatΠ° objects is defined by a link scheme that defines how the provided and required interfaces of different automatΠ° objects are connected. Thus, the behavior of the system as a
whole could be described as a set of execution protocols, each of which is a sequence of interface calls, possibly with guard conditions. We represent a set of protocols using a semantic graph in which all possible paths from the initial nodes to the final nodes define sequences of interface method calls. Because the interfaces are strictly defined in advance by the connection scheme, it is possible to construct a semantic graph automatically according to a given system of
interacting automaton objects. To verify the system behavior, one only has to check if each path in the semantic graph does satisfy the requirements. System requirements are formally described using conditional regular expressions that define patterns of acceptable and forbidden behavior. This article proposes methods and algorithms that allow you to check the compliance of programs in the CIAO language with the requirements automatically and, thereby, check the semantics of the developed program. The proposed method narrows the specification formalism to the class of regular languages and the programming language to a language with a simple and predefined structure. In many practical cases, this is sufficient for effective verification
ΠΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΏΠΎΡΡΡΠΎΠ΅Π½ΠΈΡ ΡΠΎΠ±ΡΡΠΈΠΉΠ½ΠΎ-ΡΠΏΡΠ°Π²Π»ΡΠ΅ΠΌΡΡ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΡΡ ΡΠΈΡΡΠ΅ΠΌ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠ·ΡΠΊΠ° ΡΠΏΠ΅ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ CIAO
Π‘ΠΎΠ±ΡΡΠΈΠΉΠ½ΠΎ-ΡΠΏΡΠ°Π²Π»ΡΠ΅ΠΌΡΠ΅ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΡΠ΅ ΡΠΈΡΡΠ΅ΠΌΡ Π² Π½Π°ΡΡΠ½ΠΎΠΉ Π»ΠΈΡΠ΅ΡΠ°ΡΡΡΠ΅ ΠΎΡΠ½ΠΎΡΡΡ ΠΊ ΠΊΠ»Π°ΡΡΡ ΡΠΈΡΡΠ΅ΠΌ ΡΠΎ ΡΠ»ΠΎΠΆΠ½ΡΠΌ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ΠΌ, Π½Π°Π·ΡΠ²Π°Π΅ΠΌΡΡ
ΡΠ΅Π°Π³ΠΈΡΡΡΡΠΈΠΌΠΈ ΡΠΈΡΡΠ΅ΠΌΠ°ΠΌΠΈΒ (reactive systems), ΡΠΎ Π΅ΡΡΡ ΡΠΈΡΡΠ΅ΠΌ, ΠΊΠΎΡΠΎΡΡΠ΅ Π½Π° ΠΎΠ΄Π½ΠΎ ΠΈ ΡΠΎ ΠΆΠ΅ Π²Ρ
ΠΎΠ΄Π½ΠΎΠ΅ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ ΡΠ΅Π°Π³ΠΈΡΡΡΡ ΠΏΠΎ-ΡΠ°Π·Π½ΠΎΠΌΡ Π² Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ ΡΠ²ΠΎΠ΅Π³ΠΎ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ ΠΈ ΠΏΡΠ΅Π΄ΡΡΡΠΎΡΠΈΠΈ. Π’Π°ΠΊΠΈΠ΅ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠ΄ΠΎΠ±Π½ΠΎ ΠΎΠΏΠΈΡΡΠ²Π°ΡΡ Ρ ΠΏΠΎΠΌΠΎΡΡΡ Π°Π²ΡΠΎΠΌΠ°ΡΠ½ΡΡ
ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠΏΠ΅ΡΠΈΠ°Π»ΡΠ½ΡΡ
ΡΠ·ΡΠΊΠΎΠ²ΡΡ
ΡΡΠ΅Π΄ΡΡΠ² β ΠΊΠ°ΠΊ Π³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
, ΡΠ°ΠΊ ΠΈ ΡΠ΅ΠΊΡΡΠΎΠ²ΡΡ
. ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΡΡΡΠΎΠ΅Π½ΠΈΡ ΡΠΈΡΡΠ΅ΠΌ ΡΠΎ ΡΠ»ΠΎΠΆΠ½ΡΠΌ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ΠΌ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠ³ΠΎ Π°Π²ΡΠΎΡΠ°ΠΌΠΈ ΡΠ·ΡΠΊΠ° CIAO (Cooperative Interaction of Automata Objects), ΠΊΠΎΡΠΎΡΡΠΉ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π½Π΅ΡΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΎΠΏΠΈΡΠ°Π½ΠΈΡ ΡΠ΅Π°Π³ΠΈΡΡΡΡΠ΅ΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠΎΡΠΌΠ°Π»ΡΠ½ΠΎ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠΈΡΠΎΠ²Π°ΡΡ ΡΡΠ΅Π±ΡΠ΅ΠΌΠΎΠ΅ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅. ΠΠΏΠΈΡΠ°Π½ΠΈΠ΅ ΡΠ΅Π°Π³ΠΈΡΡΡΡΠ΅ΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ Π·Π°Π΄Π°Π½ΠΎ ΡΠ»ΠΎΠ²Π΅ΡΠ½ΠΎ Π½Π° Π΅ΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΌ ΡΠ·ΡΠΊΠ΅ ΠΈΠ»ΠΈ ΠΈΠ½ΡΠΌ ΡΠΏΠΎΡΠΎΠ±ΠΎΠΌ, ΠΏΡΠΈΠ½ΡΡΡΠΌ Π² ΠΊΠΎΠ½ΠΊΡΠ΅ΡΠ½ΠΎΠΉ ΠΏΡΠ΅Π΄ΠΌΠ΅ΡΠ½ΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ. ΠΠ°Π»Π΅Π΅ ΠΏΠΎ ΡΡΠΎΠΉ ΡΠΏΠ΅ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ Π½Π° ΡΠ·ΡΠΊΠ΅ CIAO ΡΠΏΠ΅ΡΠΈΠ°Π»ΡΠ½ΡΠΌ ΠΏΡΠ΅ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°ΡΠ΅Π»Π΅ΠΌ Π³Π΅Π½Π΅ΡΠΈΡΡΠ΅ΡΡΡ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½Π°Ρ ΡΠΈΡΡΠ΅ΠΌΠ° Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΡΡΡΠΈΡ
Π°Π²ΡΠΎΠΌΠ°ΡΠΎΠ² Π½Π° ΡΠ·ΡΠΊΠ΅ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π‘++. Π‘Π³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½Π½Π°Ρ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ° ΡΠ΅Π°Π»ΠΈΠ·ΡΠ΅Ρ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅, Π³Π°ΡΠ°Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΡΡΠ΅Π΅ Π·Π°Π΄Π°Π½Π½ΠΎΠΉ ΡΠΏΠ΅ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ ΠΈ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠΌΡ Π½Π΅ΡΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠΌΡ ΠΎΠΏΠΈΡΠ°Π½ΠΈΡ. ΠΠ»Ρ ΡΠ·ΡΠΊΠ° CIAO ΠΏΡΠ΅Π΄ΡΡΠΌΠΎΡΡΠ΅Π½Π° ΠΊΠ°ΠΊ Π³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠ°Ρ, ΡΠ°ΠΊ ΠΈ ΡΠ΅ΠΊΡΡΠΎΠ²Π°Ρ Π½ΠΎΡΠ°ΡΠΈΡ. ΠΡΠ°ΡΠΈΡΠ΅ΡΠΊΠ°Ρ Π½ΠΎΡΠ°ΡΠΈΡ ΠΎΡΠ½ΠΎΠ²Π°Π½Π° Π½Π° ΡΠ°ΡΡΠΈΡΠ΅Π½Π½ΠΎΠΉ Π½ΠΎΡΠ°ΡΠΈΠΈ Π΄ΠΈΠ°Π³ΡΠ°ΠΌΠΌ Π°Π²ΡΠΎΠΌΠ°ΡΠ° ΠΈ Π΄ΠΈΠ°Π³ΡΠ°ΠΌΠΌ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΎΠ² ΡΠ½ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΠ·ΡΠΊΠ° ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ UML, ΠΊΠΎΡΠΎΡΡΠ΅ Ρ
ΠΎΡΠΎΡΠΎ Π·Π°ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π»ΠΈ ΡΠ΅Π±Ρ Π² ΠΎΠΏΠΈΡΠ°Π½ΠΈΠΈ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΡΠΏΡΠ°Π²Π»ΡΠ΅ΠΌΡΡ
ΡΠΎΠ±ΡΡΠΈΡΠΌΠΈ ΡΠΈΡΡΠ΅ΠΌ. Π’Π΅ΠΊΡΡΠΎΠ²ΡΠΉ ΡΠΈΠ½ΡΠ°ΠΊΡΠΈΡ ΡΠ·ΡΠΊΠ° CIAO ΠΎΠΏΠΈΡΠ°Π½ ΠΊΠΎΠ½ΡΠ΅ΠΊΡΡΠ½ΠΎ-ΡΠ²ΠΎΠ±ΠΎΠ΄Π½ΠΎΠΉ Π³ΡΠ°ΠΌΠΌΠ°ΡΠΈΠΊΠΎΠΉ Π² ΡΠ΅Π³ΡΠ»ΡΡΠ½ΠΎΠΉ ΡΠΎΡΠΌΠ΅. ΠΠ²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΈ Π³Π΅Π½Π΅ΡΠΈΡΡΠ΅ΠΌΡΠΉ ΠΊΠΎΠ΄ Π½Π° ΡΠ·ΡΠΊΠ΅ Π‘++ Π΄ΠΎΠΏΡΡΠΊΠ°Π΅Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΊΠ°ΠΊ Π±ΠΈΠ±Π»ΠΈΠΎΡΠ΅ΡΠ½ΡΡ
, ΡΠ°ΠΊ ΠΈ Π»ΡΠ±ΡΡ
Π²Π½Π΅ΡΠ½ΠΈΡ
ΡΡΠ½ΠΊΡΠΈΠΉ, Π½Π°ΠΏΠΈΡΠ°Π½Π½ΡΡ
Π²ΡΡΡΠ½ΡΡ. ΠΡΠΈ ΡΡΠΎΠΌ Π΄ΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΠ΅ ΡΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠΉ ΡΠΏΠ΅ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ ΠΈ ΡΠ³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΊΠΎΠ΄Π° ΡΠΎΡ
ΡΠ°Π½ΡΠ΅ΡΡΡ ΠΏΡΠΈ ΡΡΠ»ΠΎΠ²ΠΈΠΈ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΡ Π²Π½Π΅ΡΠ½ΠΈΡ
ΡΡΠ½ΠΊΡΠΈΠΉ ΡΠ²ΠΎΠΈΠΌ ΡΠΏΠ΅ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡΠΌ. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΏΡΠΈΠΌΠ΅ΡΠ° ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΎ ΠΎΡΠΈΠ³ΠΈΠ½Π°Π»ΡΠ½ΠΎΠ΅ ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ Π·Π°Π΄Π°ΡΠΈ Π.Β ΠΠ½ΡΡΠ° ΠΎ ΡΠ΅Π°Π³ΠΈΡΡΡΡΠ΅ΠΉ ΡΠΈΡΡΠ΅ΠΌΠ΅ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ Π»ΠΈΡΡΠΎΠΌ. ΠΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΠΎΠ²Π°Π½Π° Π΄Π΅ΠΉΡΡΠ²Π΅Π½Π½ΠΎΡΡΡ ΠΏΡΠ΅Π΄Π»Π°Π³Π°Π΅ΠΌΠΎΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ, ΠΏΠΎΡΠΊΠΎΠ»ΡΠΊΡ ΡΠ°ΠΌ Π°Π²ΡΠΎΠΌΠ°Ρ-ΠΏΡΠ΅ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°ΡΠ΅Π»Ρ, Π³Π΅Π½Π΅ΡΠΈΡΡΡΡΠΈΠΉ ΠΊΠΎΠ΄ Π½Π° Π‘++, ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ ΠΊΠ°ΠΊ ΡΠ΅Π°Π³ΠΈΡΡΡΡΠ°Ρ ΡΠΈΡΡΠ΅ΠΌΠ°, ΡΠΏΠ΅ΡΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½ Π½Π° ΡΠ·ΡΠΊΠ΅ CIAO ΠΈ ΡΠ΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ°ΡΠΊΡΡΡΠΊΠΈ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΠ΅ ΠΏΡΠ΅Π΄Π»Π°Π³Π°Π΅ΠΌΠΎΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ Ρ Π΄ΡΡΠ³ΠΈΠΌΠΈ ΠΈΠ·Π²Π΅ΡΡΠ½ΡΠΌΠΈ ΡΠΎΡΠΌΠ°Π»ΡΠ½ΡΠΌΠΈ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ ΠΎΠΏΠΈΡΠ°Π½ΠΈΡ ΡΠΈΡΡΠ΅ΠΌ ΡΠΎ ΡΠ»ΠΎΠΆΠ½ΡΠΌ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ΠΌ
Raise the anchor! Synthesis, X-ray and NMR characterization of 1,3,5-triazinanes with an axial tert-butyl group
N-t-Bu-Nβ,Nββ-disulfonamide-1,3,5-triazinanes were synthesized and characterized by X-ray single crystal structure analysis. In the course of the X-ray structure elucidation, the first solid experimental evidence of the axial position of the tert-butyl group in unconstrained hexahydro-1,3,5-triazacyclohexanes was obtained. Dynamic low-temperature NMR analysis allowed to fully investigate a rare case of crystallization-driven unanchoring of the tert-butyl group in the chair conformation of saturated sixmembered cycles. DFT calculations show that the use of explicit solvent molecules is necessary to explain the equatorial position of the t-Bu group in solution. Otherwise, the axial conformer is the thermodynamically stable isomer.Fil: Kletskov, Alexey V.. University of Russia; RusiaFil: Zatykina, Anastasya D.. University of Russia; RusiaFil: Grudova, Mariya V.. University of Russia; RusiaFil: Sinelshchikova, Anna A.. Academy of Sciences; RusiaFil: Grigoriev, Mikhail. Academy of Sciences; RusiaFil: Zaytsev, Vladimir P.. University of Russia; RusiaFil: Gil, Diego Mauricio. Universidad Nacional de TucumΓ‘n. Instituto de BiotecnologΓa FarmacΓ©utica y Alimentaria. Consejo Nacional de Investigaciones CientΓficas y TΓ©cnicas. Centro CientΓfico TecnolΓ³gico Conicet - TucumΓ‘n. Instituto de BiotecnologΓa FarmacΓ©utica y Alimentaria; Argentina. Universidad Nacional de TucumΓ‘n. Facultad de BioquΓmica, QuΓmica y Farmacia. Instituto de QuΓmica OrgΓ‘nica; ArgentinaFil: Novikov, Roman A.. Academy of Sciences; RusiaFil: Zubkov, Fedor Ivanovich. University of Russia; RusiaFil: Frontera, Antonio. Universidad de las Islas Baleares; EspaΓ±
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An analog of Chang inversion formula for weighted Radon transforms in multidimensions
International audienceIn this work we study weighted Radon transforms in multidimensions. We introduce an analog of Chang approximate inversion formula for such transforms and describe allweights for which this formula is exact. In addition, we indicate possible tomographicalapplications of inversion methods for weighted Radon transforms in 3D
An analog of Chang inversion formula for weighted Radon transforms in multidimensions
International audienceIn this work we study weighted Radon transforms in multidimensions. We introduce an analog of Chang approximate inversion formula for such transforms and describe allweights for which this formula is exact. In addition, we indicate possible tomographicalapplications of inversion methods for weighted Radon transforms in 3D
An example of non-uniqueness for Radon transforms with continuous positive rotation invariant weights
We consider weighted Radon transforms along hyperplanes in with strictly positive weights . We construct an example of such a transform with non-trivial kernel in the space of infinitely smooth compactly supported functions and with continuous weight. Moreover, in this example the weight is rotation invariant. In particular, by this result we continue studies of Quinto (1983), Markoe, Quinto (1985), Boman (1993) and Goncharov, Novikov (2017). We also extend our example to the case of weighted Radon transforms along two-dimensional planes in ,
A breakdown of injectivity for weighted ray transforms in multidimensions
International audienceWe consider weighted ray-transforms (weighted Radon transforms along straight lines) in with strictly positive weights . We construct an example of such a transform with non-trivial kernel in the space of infinitely smooth compactly supported functions on . In addition, the constructed weight is rotation-invariant continuous and is infinitely smooth almost everywhere on . In particular, by this construction we give counterexamples to some well-known injectivity results for weighted ray transforms for the case when the regularity of is slightly relaxed. We also give examples of continous strictly positive such that in the space of infinitely smooth compactly supported functions on for arbitrary , where are infinitely smooth for and infinitely smooth almost everywhere for
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