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Search Results: 1 - 10 of 10145 matches for " Elena Issoglio "
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Transport equations with fractal noise - existence, uniqueness and regularity of the solution
Elena Issoglio
Mathematics , 2011, DOI: 10.4171/ZAA/1437
Abstract: The main result of the present paper is a statement on existence, uniqueness and regularity for mild solutions to a parabolic transport diffusion type equation that involves a non-smooth coefficient. We investigate related Cauchy problems on bounded smooth domains with Dirichlet boundary conditions by means of semigroup theory and fixed point arguments. Main ingredients are the definition of a product of a function and a (not too irregular) distribution as well as a corresponding norm estimate. As an application, transport stochastic partial differential equations driven by fractional Brownian noises are considered in the pathwise sense.
Cylindrical Fractional Brownian Motion in Banach Spaces
Elena Issoglio,Markus Riedle
Mathematics , 2013, DOI: 10.1016/j.spa.2014.05.010
Abstract: In this article we introduce cylindrical fractional Brownian motions in Banach spaces and develop the related stochastic integration theory. Here a cylindrical fractional Brownian motion is understood in the classical framework of cylindrical random variables and cylindrical measures. The developed stochastic integral for deterministic operator valued integrands is based on a series representation of the cylindrical fractional Brownian motion, which is analogous to the Karhunen-Lo\`eve expansion for genuine stochastic processes. In the last part we apply our results to study the abstract stochastic Cauchy problem in a Banach space driven by cylindrical fractional Brownian motion.
Regularity of the solutions to SPDEs in metric measure spaces
Elena Issoglio,Martina Z?hle
Mathematics , 2014, DOI: 10.1007/s40072-015-0048-8
Abstract: In this paper we study the regularity of non-linear parabolic PDEs and stochastic PDEs on metric measure spaces admitting heat kernels. In particular we consider mild function solutions to abstract Cauchy problems and show that the unique solution is H\"older continuous in time with values in a suitable fractional Sobolev space. As this analysis is done via a-priori estimates, we can apply this result to stochastic PDEs on metric measure spaces and solve the equation in a pathwise sense for almost all paths. The main example of noise term is of fractional Brownian type and the metric measure spaces can be classical as well as given by various fractal structures. The whole approach is low dimensional and works for spectral dimensions less than 4.
Elementary pathwise methods for nonlinear parabolic and transport type SPDE with fractal noise
Michael Hinz,Elena Issoglio,Martina Z?hle
Mathematics , 2013,
Abstract: We survey some of our recent results on existence, uniqueness and regularity of function solutions to parabolic and transport type partial differential equations driven by non-differentiable noises. When applied pathwise to random situations, they provide corresponding statements for stochastic partial differential equations driven by fractional noises of sufficiently high regularity order. The approach is based on semigroup theory.
Multidimensional stochastic differential equations with distributional drift
Franco Flandoli,Elena Issoglio,Francesco Russo
Mathematics , 2014,
Abstract: This paper investigates a time-dependent multidimensional stochastic differential equation with drift being a distribution in a suitable class of Sobolev spaces with negative derivation order. This is done through a careful analysis of the corresponding Kolmogorov equation whose coefficient is a distribution.
New Value-Behavioral Structures and Hierarchies in the Technical Academic Education in the Context of Romania Integration in the European Union  [PDF]
Tiron Elena
Sociology Mind (SM) , 2011, DOI: 10.4236/sm.2011.12009
Abstract: The work is structured in 4 parts: I. Conceptual differentiations: value, belief, norm, mentality, attitude, interest, opinion, need, behavior; II. Restructuring scheme of the personality axiological components in a determined context; III. Professional values in the technical academic education: identification and hierarchy; IV. Conclu- sions. In the first part, there are made conceptual differentiations between the notions of belief, norm, mentality, attitude, interest, opinion, need, behavior, emphasizing thus on mutual aspects. In the second part of the paper, there is presented the global structuring of the axiological universe, the determinant factors of the value hierar- chy change in a given social-economic context, there is elaborated a new re-structuring scheme of the value components, there are identified specific mechanisms to the present Romanian society resistant to the value au- thentic change. In the third part, there is described D. E. Super’s theory that stands at the basis of the elaboration of the Professional Value Inventory. This was applied in our research on a sample of 120 students from the two technical faculties, getting thus a certain professional values hierarchy. The conclusions emphasize the confir- mation of the two hypothesis, the extrinsic motivating factors of the professional choice, behaviors and attitudes definition, values through immediate, material profit, of the individual welfare.
Realization Feature of Mesenchymal Dermal Cells Tissue Engineering Construction Response in Granulating Wound Transplantation in Relation with Time-Frame  [PDF]
Elena Petersen
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2012, DOI: 10.4236/jcdsa.2012.23024
Abstract: Derma is progenitor cells sours, that are able to differentiate further in several mesodermal lineage and neural and endodermal lineage. Culture conditions, skin taking site and culture medium composition considerably contribute to it. Spheroid cultured mesenchymal dermal cells contribution to skin regeneration in granulating wound in rat model was estimated.
A Model for Managing Geological and Geophysical Data in Eastern Sicily (Italy) and Possible Applications  [PDF]
Elena Partescano
Journal of Computer and Communications (JCC) , 2014, DOI: 10.4236/jcc.2014.214007
Abstract: The main aim of this work is to describe in detail how to develop an instrument, with the goal of collecting and managing a great deal of both geological and geophysical data acquired using different survey typologies in Eastern Sicily (Italy). The opportunity to manage different categories of data, at the same time, allows us to have a complete view of the complex area studied. This paper discusses a software package that has been designed to enhance the efficiency of applying a range of geological and geophysical data. More than 12000 records are archived: boreholes represent 81% of the data and 19% is geophysical data. In this paper it is illustrated how both kinds of data, thanks to the functionalities of the database and the possibility of connecting to a Geographical Information System (GIS), can be used in a variety of different geological studies. We present four studies where is relevant the use of the database, in detail, we show a morpho-structural study, an examination of the spectral analysis of the noise data, an update of the geological and geotechnical maps, and a classification of the areas on the basis of the distribution of the shear wave velocity in the firsts 30 meters (Vs30). They are just some examples of the potentialities of a relational database.
Knowledge-Based Economy as a Basis for the Long-Term Strategy of the Development of the Society  [PDF]
Elena Pilipenko
Modern Economy (ME) , 2015, DOI: 10.4236/me.2015.68084
Abstract: This article is devoted to the research of theoretical and methodological aspects of economy of knowledge formation. The emphasis is laid on the evolution of knowledge as the main reason of any changes which take place in the society. Scientific knowledge is considered as the key resource of creating social wealth; and the process of its production—as an indissoluble processing chain which consists of spiritual, informative and material production. Such approach brings about the necessity of drastic review of the whole system of economic categories and grounds in it models, methods, criteria and exponents. Authorial conception of economy of knowledge is suggested. It is based on three main principles: 1) the unity of economic field; 2) preferred development of spiritual production; 3) accordance of controlling mechanism and effectiveness exponents to the peculiarities of goods of any production.
Risks of Related Parties in Transition Economy—An Audit Approach  [PDF]
Elena Dobre
Open Journal of Accounting (OJAcct) , 2017, DOI: 10.4236/ojacct.2017.63008
Abstract:
This paper aims at improving audit practices, at least, for our national audit practitioners. Such possibilities are discussed as case study regarding an audit of a public entity as a related party (relationship & transactions) with a private company. This reveals a fraud risk by periodical re-negotiating of significant contracts combined with internal controls deficiency. In order to avoid and remove such bad practices, the Romanian financial auditors, fraud examiners, taxation consultants and even legal advisers, need rigorous learning and professional development and adequate evaluation frameworks, combining in a competent responsible manner quantitative and qualitative evaluation made by a peer-review schema. Exclusive quantitative approaches are not adequate for a correct evaluation. An efficient evaluation must involve human specialists, including financial auditor’s colleagues. The results for entire professional body may result in higher quality judgments and a good assimilation; not only good practice international standards, but even entire experience of practitioners in this field was recommended. Emphasizing of professional skepticism arises with enough experience.
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