Search results for "Format"
showing 10 items of 24643 documents
CALIBRATION OF LÉVY PROCESSES USING OPTIMAL CONTROL OF KOLMOGOROV EQUATIONS WITH PERIODIC BOUNDARY CONDITIONS
2018
We present an optimal control approach to the problem of model calibration for L\'evy processes based on a non parametric estimation procedure. The calibration problem is of considerable interest in mathematical finance and beyond. Calibration of L\'evy processes is particularly challenging as the jump distribution is given by an arbitrary L\'evy measure, which form a infinite dimensional space. In this work, we follow an approach which is related to the maximum likelihood theory of sieves. The sampling of the L\'evy process is modelled as independent observations of the stochastic process at some terminal time $T$. We use a generic spline discretization of the L\'evy jump measure and selec…
Very narrow quantum OBDDs and width hierarchies for classical OBDDs
2014
In the paper we investigate a model for computing of Boolean functions - Ordered Binary Decision Diagrams (OBDDs), which is a restricted version of Branching Programs. We present several results on the comparative complexity for several variants of OBDD models. - We present some results on the comparative complexity of classical and quantum OBDDs. We consider a partial function depending on a parameter k such that for any k > 0 this function is computed by an exact quantum OBDD of width 2, but any classical OBDD (deterministic or stable bounded-error probabilistic) needs width 2 k+1. - We consider quantum and classical nondeterminism. We show that quantum nondeterminism can be more efficien…
La classificació de la documentació parlamentària de les Corts Valencianes: la funció de control al Consell.
2008
El dinamisme necessari en una institució parlamentària com les Corts Valencianes requereix de l'organització del fons documental i, per tant, la necessitat d'elaborar un sistema de gestió documental integral. L'objectiu és facilitar la recuperació d'informació parlamentària per a la millora de la gestió, la presa de decisions, l'enriquiment dels debats i la investigació sobre la institució. L'accés a la documentació facilita també el coneixement de les funcions de la cambra, i l'aproximació dels ciutadans a les Corts. Això s'ha concretat en l'elaboració d'un quadre de classificació per a descriure el fons documental i gestionar-ne la recuperació, l'eliminació o la conservació. La metodologi…
Nonlinear dissipation phenomena in optomechanics
2016
Yksikään kvanttisysteemi ei voi olla täysin eristetty ympäristöstään, mikä johtaa informaation välittymiseen systeemin ja ympäristön välillä. Optomekaniikassa, missä tyypillinen tutkittava systeemi on peileistä koostuva optinen kaviteetti yhdistettynä mekaaniseen värähtelijään, systeemin ja ympäristön lineaarisesta kytkennästä johtuvat dissipaatioilmiöt ovat hyvin tunnettuja. Epälineaarisia ilmiöitä ei kuitenkaan ymmärretä yhtä laajasti. Tutkin epälineaarista kytkentää kaviteetin ja lämpökylvyn välillä ja havainnollistan tästä kytkennästä johtuvia ilmiöitä kuten epälineaarista dissipaatiota. Esitän myös optisen kaviteetin epälineaarisen dissipaation oikeuttavan mallin, missä optinen kavitee…
Wiener-Granger Causality in Network Physiology with Applications to Cardiovascular Control and Neuroscience
2016
Since the operative definition given by C. W. J. Granger of an idea expressed by N. Wiener, the Wiener–Granger causality (WGC) has been one of the most relevant concepts exploited by modern time series analysis. Indeed, in networks formed by multiple components, working according to the notion of segregation and interacting with each other according to the principle of integration, inferring causality has opened a window on the effective connectivity of the network and has linked experimental evidences to functions and mechanisms. This tutorial reviews predictability improvement, information-based and frequency domain methods for inferring WGC among physiological processes from multivariate…
Theoretical and experimental study of two discrete coupled Nagumo chains
2001
We analyze front wave (kink and antikink) propagation and pattern formation in a system composed of two coupled discrete Nagumo chains using analytical and numerical methods. In the case of homogeneous interaction among the chains, we show the possibility of the effective control on wave propagation. In addition, physical experiments on electrical chains confirm all theoretical behaviors.
Non-target and biological diversity risk assessment
2008
This chapter discusses the following procedures for risk assessment in Bt cotton using the non-target risk assessment model developed by scientists of the GMO ERA Project ("International Project on GMO Environmental Risk Assessment Methodologies", which is a continuation of the GMO Guidelines Project, which was launched by scientists of the International Organization for Biological Control Global Working Group on "Transgenic Organisms in Integrated Pest Management and Biological Control"): (1) identify relevant functional groups of biological diversity associated with adverse effects, (2) list and prioritize species or ecological processes, (3) identify potential exposure pathways and adver…
Noosfera jako podstawa systemu kształcenia zawodowego przyszłych nauczycieli na Ukrainie i w Polsce w społeczeństwie informacyjnym
2017
W artykule analizuje się rozwój systemu kształcenia zawodowego przyszłych nauczycieli w obrębie noosferogenezy. Uzasadniono znaczenie orientacji noosferycznej systemu kształcenia zawodowego polegającej na formowaniu świadomości noosferycznej opartej na światopoglądzie noosferycznym. Złożona i wymagająca rola zawodu nauczycielskiego wymaga specyficznych umiejętności i predyspozycji, jakie musi posiadać współczesny nauczyciel, aby móc pracować w odpowiedzialny i godny sposób
IT engagement as a blessing and a curse? Examining its antecedents and outcomes in organizations
2020
Information technology (IT) engagement is defined as a need to spend more time using IT. Practice-based examples show that IT engagement can have adverse effects in organizations. Although users can potentially get more work done through IT engagement, observations show that the users might jeopardize their well-being and hamper their work performance. We aimed to investigate this complexity in the research on IT engagement by examining its potential antecedents and outcomes in organizations. Considering the potentially mixed outcomes, we developed a model to examine the effects of IT engagement on personal productivity and strain. We also aimed to explain the antecedents of IT engagement b…
Patronizējošu un nosodošu tekstu noteikšana(SemEval 2022 uzdevums)
2022
Darbā tiek apskatīta problēma par nosodošu tekstu noteikšanu, kas ir viens no SemEval 2022 izvirzītajiem uzdevumiem. Tiek apskatīti teksti angļu valodā uz jau gatavas un novērtētas datu kopas. Darba mērķis ir apskatīt iespējamus risinājumus un no izvēlētajiem izstrādāt programmu izmantojot dažādus valodas tehnoloģijas modeļus kuri spētu nolasīt doto datu kopu un atgriezt paredzējumu vai teksts ir nosodošs vai nav, kā arī apkopot informāciju par dažādiem sistēmas uzbūves slāņiem un to darbību. Galvenie modeļi, kuri darbā tiek apskatīti, realizēti un testēti ir BERT, RoBERTA un distilBERT, kā arī Naive Bayes modelis, kurš kalpo kā bāzlīnija salīdzināšanai. Beigās tiek iegūti rezultāti ar katr…