Search results for "15"
showing 10 items of 8669 documents
Game-Theoretic Approach to Hölder Regularity for PDEs Involving Eigenvalues of the Hessian
2021
AbstractWe prove a local Hölder estimate for any exponent $0<\delta <\frac {1}{2}$ 0 < δ < 1 2 for solutions of the dynamic programming principle $$ \begin{array}{@{}rcl@{}} u^{\varepsilon} (x) = \sum\limits_{j=1}^{n} \alpha_{j} \underset{\dim(S)=j}{\inf} \underset{|v|=1}{\underset{v\in S}{\sup}} \frac{u^{\varepsilon} (x + \varepsilon v) + u^{\varepsilon} (x - \varepsilon v)}{2} \end{array} $$ u ε ( x ) = ∑ j = 1 n α j inf dim ( S ) = j sup v ∈ S | v | = 1 u ε ( x + ε v ) + u ε ( x − ε v ) 2 with α1,αn > 0 and α2,⋯ ,αn− 1 ≥ 0. The proof is based on a new coupling idea from game theory. As an application, we get the same regularity estimate for viscosity solutions of the PDE $…
Regularity for nonlinear stochastic games
2015
We establish regularity for functions satisfying a dynamic programming equation, which may arise for example from stochastic games or discretization schemes. Our results can also be utilized in obtaining regularity and existence results for the corresponding partial differential equations. peerReviewed
Fractional Hardy inequalities and visibility of the boundary
2013
We prove fractional order Hardy inequalities on open sets under a combined fatness and visibility condition on the boundary. We demonstrate by counterexamples that fatness conditions alone are not sufficient for such Hardy inequalities to hold. In addition, we give a short exposition of various fatness conditions related to our main result, and apply fractional Hardy inequalities in connection to the boundedness of extension operators for fractional Sobolev spaces.
Explicit behavioral detection of visual changes develops without their implicit neurophysiological detectability
2011
Change blindness is a failure of reporting major changes across consecutive images if separated, e.g., by a brief blank interval. Successful change detection across interrupts requires focal attention to the changes. However, findings of implicit detection of visual changes during change blindness have raised the question of whether the implicit mode is necessary for development of the explicit mode. To this end, we recorded the visual mismatch negativity (vMMN) of the event-related potentials (ERPs) of the brain, an index of implicit pre-attentive visual change detection, in adult humans performing an oddball-variant of change blindness flicker task. Images of 500 ms in duration were prese…
Presentazione del volume L'ordinamento giudiziario. Ciclo di seminari (Palermo, marzo-maggio, 2018)
2019
Presentazione dei contributi raccolti nel volume
“The Evils Which Have Arisen in My Country” : Mary Power Lalor and Active Female Landlordism during the Land Agitation
2021
The British journalist and author, Frederic Whyte, reminisced fondly about his childhood trips to County Tipperary, presenting an idealistic image of Mary Frances Power Lalor, one of the most active of Irish landowners during the later Victorian period. peerReviewed
Associations Among Teacher–Child Interactions, Teacher Curriculum Emphases, and Reading Skills in Grade 1
2017
Research Findings: The purpose of the present study was to examine the extent to which the quality of teacher–child interactions and teachers’ self-reported curriculum emphases are related to children’s reading skill development during their 1st school year. To accomplish this, we assessed the reading skills of 1,029 Finnish children (M age = 85.77 months) twice during Grade 1, and the children’s teachers (n = 91) completed questionnaires concerning their literacy-related curriculum emphases. In addition, teacher–child interactions in terms of emotional support, classroom organization, and instructional support were observed in 29 classrooms. The results of multilevel modeling showed that a…
Traces of the past: an interview study with Finnish war children who did not return to Finland after the Second World War
2017
ABSTRACTThis paper is an in-depth qualitative study based on interviews with 10 Finnish children who were evacuated to Sweden during Second World War and who did not return to Finland after the war. The interviewees were asked to tell about their lives. Nine of them were between 2 and 5 years and one was 7 years old at the time of evacuation. The aim was to study how their childhood experiences were reflected in adult memories, how they remembered or did not remember. This paper focuses on the consequences of not knowing about one’s early life and also on whether it is possible to observe signs of the Finnish mother. She did not appear explicitly but could be sensed in the tendency of the i…
Changing content and form: corporate training in Finnish retailing, 1900–1975
2018
In this paper, I study the history of corporate training in the Finnish retail industry from the beginning to the last quarter of the 20th century. In this effort, I search for answers to questions...
Physico-Chemical Properties and Use of Waste Biomass-Derived Activated Carbons
2017
Activated carbons are widely used in different industrial processes for example as adsorbents or as support materials. Advantageously these carbons can be prepared from residual or waste biomass materials. Different raw material type and activation procedure plays an important role in the physico-chemical characteristics of activated carbon e.g. surface area, porosity and pore distribution. In this study, activated carbon has been prepared from lignocellulosic waste materials (e.g. saw dust, lignin residue) and characterized by a number of methods. Further, adsorption properties of carbons were evaluated. Adsorption capacity of dyes and metals was high (methylene blue dye 86 % and zinc meta…