Search results for "parametri"
showing 10 items of 1144 documents
Precise and efficient parametric path analysis
2012
Hard real-time systems require tasks to finish in time. To guarantee the timeliness of such a system, static timing analyses derive upper bounds on the worst-case execution time (WCET) of tasks. There are two types of timing analyses: numeric and parametric. A numeric analysis derives a numeric timing bound and, to this end, assumes all information such as loop bounds to be given a priori. If these bounds are unknown during analysis time, a parametric analysis can compute a timing formula parametric in these variables. A performance bottleneck of timing analyses, numeric and especially parametric, is the so-called path analysis, which determines the path in the analyzed task with the longes…
3D Tools for CH Documentation
2020
The research focuses on the digital Computer Assisted Restoration procedures to guide the measure of integration of an artefact, innovating and implementing traditional research methods. Non-invasive 3D Digitalization techniques with high-performance devices allow the generation of applications for high-resolution visualization of three-dimensional environments with the possibility of navigating, analyzing and consulting virtual models in real time. The innovative application of 3D digital technologies has demonstrated that the integrated use of the new technology can be a useful tool to improve the entire process of collecting, storing and consulting information and data related to diagnos…
The effect of disorder on optical spectra of conjugated polymers
1993
Abstract Using the semi-empirical parametrization of the Pariser-Parr-Pople model we determine the excitonic states in conjugated polymers. The employed parameters correspond to a moderate strength of the long-range Coulomb interaction. In order to take the disorder into account, the nearest-neighbour transfer matrix elements are chosen according to a random distribution. Averaging the results over a large number of chains of 100 sites, which are known to be sufficiently long so that finite-size effects become negligible, we obtain the linear and third-order nonlinear optical susceptibilities. With increasing disorder the linear absorption, the two-photon absorption and the third-harmonic g…
Information Transfer in Linear Multivariate Processes Assessed through Penalized Regression Techniques: Validation and Application to Physiological N…
2020
The framework of information dynamics allows the dissection of the information processed in a network of multiple interacting dynamical systems into meaningful elements of computation that quantify the information generated in a target system, stored in it, transferred to it from one or more source systems, and modified in a synergistic or redundant way. The concepts of information transfer and modification have been recently formulated in the context of linear parametric modeling of vector stochastic processes, linking them to the notion of Granger causality and providing efficient tools for their computation based on the state&ndash
Estimating regional differences in returns to education when schooling and location are determined endogenously
2010
While the growing supply of university skills is known to have agglomerated towards the large centers in Finland, there is no research knowledge available on the development of regional demands. This paper attempts to fill this gap by analyzing regional variation in the private-sector return to university education in Finland for the period 1970 - 2004. In the analysis, we focus on studying 1) whether there are differences in the return to university between different region types, and 2) to what extent can these differences - if they exist - be explained by differences in regional skill supply and unemployment. For the econometric analysis, we use a large register-based dataset constructed…
Geometry and quasisymmetric parametrization of Semmes spaces
2011
We consider decomposition spaces R 3 /G that are manifold factors and admit defining sequences consisting of cubes-with-handles of finite type. Metrics on R 3 /G constructed via modular embeddings of R 3 /G into a Euclidean space promote the controlled topology to a controlled geometry. The quasisymmetric parametrizability of the metric space R 3 /G×R m by R 3+m for any m ≥ 0 imposes quantitative topological constraints, in terms of the circulation and the growth of the cubes-with-handles, on the defining sequences for R 3 /G. We give a necessary condition and a sufficient condition for the existence of such a parametrization. The necessary condition answers negatively a question of Heinone…
Deguna rezistences izvērtēšana ar četru fāzu rinomanometriju vecuma grupā 16-19 gadi un iegūto datu saistība ar antropometriskajiem parametriem
2018
Četru fāzu rinomanometrija ir efektīva deguna ventilatorās funkcijas izmeklēšanas metode, kas ir ne tikai papildinoša metode deguna elpošanas saslimšanu diagnosticēšanā, bet arī sniedz daudz informācijas par deguna fizioloģiju. Iepriekš ir pētītas un izstrādātas normas vērtības pieaugušajiem. Bērniem vecumā līdz 15 gadiem ir izvirzītas hipotēzes deguna elpošanas atšķirībām un iespējamām normas vērtībām. Taču informācijas par deguna elpošanas īpašībām un to saistību ar antropometriskajiem parametriem 16 līdz 19 gadu vecuma grupā trūkst. Darba mērķis: • Izvērtēt deguna rezistenci ar četru fāzu rinomanometriju vecuma grupā 16 līdz 19 gadi un noteikt iegūto datu saistību ar antropometriskajiem …
Sibīrijas mēlziedes Ligularia sibirica (L.) Cass. demogrāfisko parametru ietekmējošie faktori Latvijā
2017
Sibīrijas mēlziede ir apdraudēta suga gan Latvijā, gan pasaulē. Latvijā Sibīrijas mēlziede sasniedz areāla Eiropas daļas rietumu, ziemeļrietumu robežu. Pirmo reizi Latvijas robežās šī suga konstatēta 1895. gadā. Kopumā ņemot Sibīrijas mēlziede ir purvu suga ar spēju augt un konkurēt dažādos augšanas apstākļos. Lai gan Sibīrijas mēlziede spēj konkurēt ar gari augošiem augiem un stiebrzālēm, tomēr dzīvotspēja šai populācijai ir maza, jo tieši jaunie īpatņi nespēj izturēt konkurenci un bez pietiekama apgaismojuma iet bojā. Tāpēc ir ļoti svarīgi, lai augi juvenīlajā stadijā izdzīvotu. Veicot Vilkoksona testu, noteikts vai pastāv būtiskas atšķirības Sibīrijas mēlziedes demogrāfiskajiem parametri…
Dzeltenās dzegužkurpītes Cypripedium calceolus L. demogrāfisko parametru ietekmējošie faktori Ķemeru Nacionālajā parkā
2017
Orhidejas, kā piemēram, dzeltenā dzegužkurpīte Cypripedium calceolus, ir viena no apdraudētākajām augu grupām pasaulē, jo tās ir šauri specializējušās un ļoti jutīgas pret izmaiņām biotopā. Līdz ar to, šo augu pētījumi mūsdienās ir arvien aktuālāki. Ķemeru Nacionālā parka trijās atradnēs 2016. gadā no maija līdz oktobrim tika ievākti dati, lai realizētu veiktā pētījuma mērķi – noskaidrot apgaismojuma un veģetācijas seguma ietekmi uz Cypripedium calceolus demogrāfiskajiem parametriem. Dati ievākti, izmantojot transekšu/parauglaukumu metodi, kur apļveida parauglaukumos (1,5 m rādiuss) noteica paaugā un pamežā esošās sugas un skaitu dažādās augstuma klasēs, kā arī vaskulāro augu un sūnu sugas …
Architettura e second digital turn, l’evoluzione degli strumenti informatici e il progetto
2021
La condizione digitale che ha gradualmente ibridato le nostre esistenze, trasformando atomi in bit, si è oggi cementificata sulla nostra società, arricchendone la postmodernità e determinando una nuova liquidità acuitasi con l’avvento di internet. Un momento storico segnato da una nuova maturità del digitale, evidente nel nostro diverso rapporto con i dati, e nella diffusione di metodi di machine learning avanzato, che promettono una nuova capacità di comprensione della complessità contemporanea e nel frattempo contribuiscono alla propagazione dell’apparato tecnico sul mondo. Questi cambiamenti, tanto profondi da toccare la nostra cultura, stanno modificando il nostro modo di interpretare e…