Search results for "Regular"
showing 10 items of 855 documents
Some applications of a theorem of Shirshov to language theory
1983
Some applications of a theorem of Shirshov to language theory are given: characterization of regular languages, characterization of bounded languages, and a sufficient condition for a language to be Parikh-bounded.
Airy-function approach to binary black hole merger waveforms: The fold-caustic diffraction model
2022
From numerical simulations of the Einstein equations, and also from gravitational wave observations, the gravitational wave signal from a binary black hole merger is seen to be simple and to possess certain universal features. The simplicity is somewhat surprising given that non-linearities of general relativity are thought to play an important role at the merger. The universal features include an increasing amplitude as we approach the merger, where transition from an oscillatory to a damped regime occurs in a pattern apparently oblivious to the initial conditions. We propose an Airy-function pattern to model the binary black hole (BBH) merger waveform, focusing on accounting for its simpl…
A Step into the Future: Applications of Nanoparticle Enzyme Mimics.
2018
We describe elementary concepts, up-to-date developments, and perspectives of the emerging field of nanoparticle enzyme mimics (so-called "nanozymes") at the interface of chemistry, biology, materials, and nanotechnology. The design and synthesis of functional enzyme mimics is a long-standing goal of biomimetic chemistry. Metal complexes, polymers and engineered biomolecules capturing the structure of natural enzymes or their active centers have been made to achieve high rates and enhanced selectivities. Still, the design of new "artificial enzymes" that are not related to proteins but with capacity of production and stability at industrial level, remains a goal. Inorganic nanoparticles bea…
Structure of Polymers
2014
The structure and thermodynamics of polymers are discussed both with an adapted version of Flory’s regular solution theory and the concept of scaling and random walks. The salient properties of polymers like segregation and elasticity are discussed in terms of these concept. The Flory-Stockmayer theory of gelation is introduced and related to the percolation concept.
Evaluation of menstrual irregularities after COVID-19 vaccination: Results of the MECOVAC survey
2022
Abstract We investigated menstrual irregularities after the first and second doses of the COVID-19 vaccine. Women answered a customised online questionnaire (ClinicalTrial.gov ID: NCT05083065) aimed to assess the vaccine type, the phase of the menstrual cycle during which the vaccine was administered, the occurrence of menstrual irregularities after the first and second doses, and how long this effect lasted. We excluded women with gynaecological and non-gynaecological diseases, undergoing hormonal and non-hormonal treatments, in perimenopause or menopause, as well as those who had irregular menstrual cycles in the last 12 months before vaccine administration. According to our data analysis…
Darījuma kontakta tiesiskā daba un saistītie svešo līdzekļu pārvaldīšanas jautājumi.
2018
Pētījumā pamatā tiek analizētas civiltiesiskās attiecības, kas saistītas ar bankas pakalpojumu - darījuma konts. Pēdējais tiek izmantots darījumu norēķinu izpildes nodrošināšanai. Latvijas normatīvajos aktos nav paredzēts tiešs tiesisko attiecību sakarā ar darījuma kontu regulējums. Attiecīgi nav noteikta tāda konta piederība, naudas līdzekļu statuss, strīda gadījumā piemērojamas tiesību normas. Nav judikatūras, arī zinātnisku pētījumu, kas identificētu šī institūta problēmjautājumus Latvijā. Autora ieskatā, darījuma konta attiecību tiešs normatīvais regulējums ir nepieciešams, lai nodrošinātu atbilstošu to dalībnieku interešu aizsardzību. Pētījuma mērķis ir izpētīt ar darījuma kontu saistī…
The influence of irregular group position and frequency on decoding Italian words: a comparison between dyslexic and fluent readers
2009
Regularization Preserving Localization of Close Edges
2007
International audience; In this letter, we address the problem of the influence of neighbor edges and their effect on the edge delocalization while extracting a neighbor contour by a derivative approach. The properties to be fulfilled by the regularization operators to minimize or suppress this side effect are deduced, and the best detectors are pointed out. The study is carried out in 1-D for discrete signal. We show that among the derivative filters, one of them can correctly detect our model edges without being influenced by a neighboring transition, whatever their separation distance is and their respective amplitude is. A model of contour and close transitions is presented and used through…
Ilmasto muuttuu - energiakentän rakenne ei : tutkimus maatilojen energiaresurssien käyttöönoton ja maatilamittakaavaisen energiantuotannon rakenteell…
2005
The average state complexity of rational operations on finite languages is linear
2010
Considering the uniform distribution on sets of m non-empty words whose sum of lengths is n, we establish that the average state complexities of the rational operations are asymptotically linear.