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Search Results: 1 - 10 of 236 matches for " Lasse Borup "
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Pseudodifferential operators on -modulation spaces
Lasse Borup
Journal of Function Spaces and Applications , 2004, DOI: 10.1155/2004/621924
Abstract: We study expansions of pseudodifferential operators from the Hörmander class in a special family of functions called brushlets. We prove that such operators have a sparse representation in a brushlet system. Using this sparsity, we show that a pseudodifferential operator extends to a bounded operator between α-modulation spaces. These spaces were introduced by Gröbner in [15]. They are, in some sense, intermediate spaces between the classical Besov and Modulation spaces.
On anisotropic Triebel-Lizorkin type spaces, with applications to the study of pseudo-differential operators
Lasse Borup,Morten Nielsen
Journal of Function Spaces and Applications , 2008, DOI: 10.1155/2008/510584
Abstract: A construction of Triebel-Lizorkin type spaces associated with flexible decompositions of the frequency space ℝd is considered. The class of admissible frequency decompositions is generated by a one parameter group of (anisotropic) dilations on ℝd and a suitable decomposition function. The decomposition function governs the structure of the decomposition of the frequency space, and for a very particular choice of decomposition function the spaces are reduced to classical (anisotropic) Triebel-Lizorkin spaces. An explicit atomic decomposition of the Triebel-Lizorkin type spaces is provided, and their interpolation properties are studied. As the main application, we consider Hörmander type classes of pseudo-differential operators adapted to the anisotropy and boundedness of such operators between corresponding Triebel-Lizorkin type spaces is proved.
Aerosol influenza transmission risk contours: A study of humid tropics versus winter temperate zone
Brian P Hanley, Birthe Borup
Virology Journal , 2010, DOI: 10.1186/1743-422x-7-98
Abstract: An influenza transmission risk contour map was developed for T versus RH. Empirical equations were created for estimating: 1. risk relative to temperature and RH, and 2. time parameterized influenza transmission risk. Using the transmission risk contours and equations, transmission risk for each country's locations was compared with influenza reports from the countries. Higher risk enclosed locations in the tropics included new automobile transport, luxury buses, luxury hotels, and bank branches. Most temperate locations were high risk.Environmental control is recommended for public health mitigation focused on higher risk enclosed locations. Public health can make use of the methods developed to track potential vulnerability to aerosol influenza. The methods presented can also be used in influenza modeling. Accounting for differential aerosol transmission using T and RH can potentially explain anomalies of influenza epidemiology in addition to seasonality in temperate climates.The contrasting epidemiology of influenza in the tropics versus temperate regions has been discussed for many years, and it has been accepted for decades that jet aircraft are a major vector for global spread of influenza[1]. This study is an attempt to better understand aerosol influenza transmission for indoor locations by examining temperature and humidity indoors where jet travelers are likely to interact with locals and comparing humid tropical locations with temperate winter ones. In recent years, much attention has been given to the spread of influenza around the world, especially with the continuing H5N1 outbreaks since 2003 and the H1N1 pandemic in 2009. Extensive research has been conducted to understand the mechanism of transmission of influenza virus, including environmental conditions that favor transmission. Various aerosol studies have shown that micron range droplet particles from breathing, talking, coughing and sneezing bear influenza viruses, and that the aerosol route is a
The Price of Anarchy for Network Formation in an Adversary Model
Lasse Kliemann
Games , 2011, DOI: 10.3390/g2030302
Abstract: We study network formation with n players and link cost α > 0. After the network is built, an adversary randomly deletes one link according to a certain probability distribution. Cost for player? ν incorporates the expected number of players to which? ν will become disconnected. We focus on unilateral link formation and Nash equilibrium. We show existence of Nash equilibria and a price of stability of 1 + ο(1) under moderate assumptions on the adversary and n ≥ 9. We prove bounds on the price of anarchy for two special adversaries: one removes a link chosen uniformly at random, while the other removes a link that causes a maximum number of player pairs to be separated. We show an Ο(1) bound on the price of anarchy for both adversaries, the constant being bounded by 15 + ο(1) and 9 + ο(1), respectively.
Investigating negotiated treatment goals as a tool to facilitate collaboration between conventional and complementary practitioners in the treatment of people with Multiple Sclerosis
Lasse Skovgaard
International Journal of Integrated Care , 2011,
Abstract:
Potentials and barriers in cooperation between conventional and complementary practitioners at a Danish Multiple Sclerosis Hospital
Lasse Skovgaard
International Journal of Integrated Care , 2011,
Abstract:
A thermodynamic model of sliding friction
Lasse Makkonen
AIP Advances , 2012, DOI: 10.1063/1.3699027
Abstract: A first principles thermodynamic model of sliding friction is derived. The model predictions are in agreement with the observed friction laws both in macro- and nanoscale. When applied to calculating the friction coefficient the model provides a quantitative agreement with recent atomic force microscopy measurements on a number of materials.
Rhetoric across the Humanities: Aristotelian Rhetor-Ethics and the Forman Kinship of Art and Literature
Lasse Hodne
Nordlit : Tidsskrift i litteratur og kultur , 1999,
Abstract:
Rhetoric across the Humanities: Aristotelian Rhetor-Ethics and the Forman Kinship of Art and Literature
Lasse Hodne
Nordlit : Tidsskrift i litteratur og kultur , 1999,
Abstract:
El campoesino como concepto analítico
Lasse Krantz
Nueva antropología , 1977,
Abstract:
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