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Search Results: 1 - 10 of 1112 matches for " Patrik Hein "
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Comparison of free breathing versus breath-hold in perfusion imaging using dynamic volume CT
Sonja Kandel,Henning Meyer,Patrik Hein,Alexander Lembcke,Jens-C. Rueckert,Patrik Rogalla
Insights into Imaging , 2012, DOI: 10.1007/s13244-012-0169-9
Abstract: Image registration is crucial for CT perfusion imaging.
Exploring Transactional Analysis in Relation to Post-Graduate Supervision—A Balancing Process  [PDF]
Patrik Thollander, Wiktoria Glad, Patrik Rohdin
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.54028
Abstract:

The PhD student supervision process is an important process, and the need for PhD students, who often form the backbone of the research community, to receive professional, inspiring and efficient supervision cannot be understated. This paper explores the benefits and values of Transactional Analysis (TA) as a way to further understand and work with PhD supervision. Using TA and the legitimacy ladder applied on PhD education, a modified model for increased understanding of the PhD student supervision process is presented, and is then related to empirical findings from a questionnaire among PhD students. The model shows for example the need for the supervisor to balance his or her role towards the PhD student, and suggests that professional PhD student supervision means moving from a Parent to Child relationship between the supervisor and the PhD student, towards a more mature Adult to Adult relationship.

Technological Change and Carbon Markets*  [PDF]
Patrik S?derholm
Low Carbon Economy (LCE) , 2010, DOI: 10.4236/lce.2010.12010
Abstract: In this brief note we discuss the innovation impacts of different market-based policy instruments in the climate field, and in particular the case of markets for carbon allowances. The note provides a brief review of the theoretical and empirical literature, and addresses important issues concerning policy instrument choice, the need for multiple policies as well as the timing and commitment strategies of the regulating agency. The analysis suggests that technological progress depends critically on developing and maintaining efficient carbon markets. In the case emissions are under-priced and/or adoption behaviour distorted by, for instance, inefficient plant entrants and closure provisions, any new carbon-free innovation will not be sufficiently exploited. However, for both economic and political reasons other policy instruments-most notably public R & D and technology support-will be needed to complement the price signals provided by carbon markets.
Modeling the Economic Costs of Climate Policy: An Overview  [PDF]
Patrik S?derholm
American Journal of Climate Change (AJCC) , 2012, DOI: 10.4236/ajcc.2012.11002
Abstract: The overall objective of this paper is to scrutinize previous economic models used to assess the economic costs of cli-mate policy. We pay particular attention to the way in which different model structures and assumptions affect cost es-timates, and highlight the limitations and the strengths of different types of modelling approaches. The paper begins by briefly discussing the concept of economic costs, different cost categories (i.e., direct costs, partial equilibrium costs and general equilibrium costs), and the various model approaches that can be used to assess the economic impacts of climate policy (e.g., top-down versus bottom-up models). A systematic review of the main assumptions and methodo-logical choices that underlie different reported cost estimates is presented, and we distinguish between five main types of climate policy cost drivers: a) the baseline scenario; b) the structural characteristics of the models; c) the representa-tion of technological change (e.g., endogenous or exogenous); d) the design of climate policy; and e) the inclusion of non-market costs and benefits. The analysis shows that all these elements help explain model outcomes.
How to React to the Subprime Crisis? - The Impact of an Interest Rate Freeze on Residential Mortgage Backed  [PDF]
Julia Hein, Thomas Weber
Journal of Service Science and Management (JSSM) , 2009, DOI: 10.4236/jssm.2009.24035
Abstract: Several policy options have been discussed to mitigate the current subprime mortgage crisis. This paper analyses an interest rate freeze on adjustable rate mortgages as one possible reaction. In particular, the implications on Residential Mortgage Backed Securities (RMBS) are studied. We examine shifts in the underlying portfolio’s discounted cash flow distributions as well as changes in the payment profile of RMBS-tranches. We show that the positive effects of a rate freeze, e.g. less foreclosures and a stabilizing housing market, can outweigh the negative effect of lower interest income such that investors might be better off.
The random Wigner distribution of Gaussian stochastic processes with covariance in
Patrik Wahlberg
Journal of Function Spaces and Applications , 2005, DOI: 10.1155/2005/252415
Abstract: The paper treats time-frequency analysis of scalar-valued zero mean Gaussian stochastic processes on ℝd. We prove that if the covariance function belongs to the Feichtinger algebra S0(ℝ2d) then: (i) the Wigner distribution and the ambiguity function of the process exist as finite variance stochastic Riemann integrals, each of which defines a stochastic process on ℝ2d, (ii) these stochastic processes on ℝ2d are Fourier transform pairs in a certain sense, and (iii) Cohen's class, ie convolution of the Wigner process by a deterministic function Φ∈C(ℝ2d), gives a finite variance process, and if Φ∈S0(ℝ2d) then W∗Φ can be expressed multiplicatively in the Fourier domain.
Between a rock and a whirlpool? Measurement problems in assessing risk perceptions of illicit drug use
Patrik Karlsson
Nordic Studies on Alcohol and Drugs , 2011, DOI: 10.2478/v10199-011-0015-2
Abstract:
Mapping Innovations in North Germanic with GIS
Patrik Bye
Oslo Studies in Language , 2011,
Abstract: The mapping of innovations, as opposed to taxonomic features, has so far been little used in historical linguistics and dialect geography. Here I show with two examples from Peninsular North Germanic how linguistic theory may cast light on complex mosaics of geographically competing features and how dialect geography can help choose between competing reconstructions. This research builds on a database of more than 50 innovations and over 1000 municipalities in the Nordic countries coupled with mapping software (ArcGIS).
Humaniora och informationsteknik
Patrik Svensson
Human IT: Tidskrift f?r Studier av IT ur ett Humanvetenskapligt Perspektiv , 2003,
Abstract:
HUMlab vid Ume universitet
Patrik Svensson
Human IT: Tidskrift f?r Studier av IT ur ett Humanvetenskapligt Perspektiv , 2003,
Abstract:
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