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The 'Cake on the plate' syndrome... and how specialist tansy aphids avoid extinction by hungry predators and parasitoids: insights from the use of polymorphic micro-satellite markers
Frivilliga försäkringar : en finansieringsmöjlighet inom äldreomsorgen?
Olika former för äldrevårdsförsäkringar har under senare år lyfts fram i debatten och belysts i flera svenska studier och forskningsrapporter. Denna studie har haft som syfte att studera vilka för- och nackdelar som frivilliga tilläggsförsäkringar kan få i svensk äldreomsorg. Studien förväntas bidra till diskussionen om delar av äldreomsorgens finansiering kan överlåtas till individerna själva gen
Strukturella och fysikaliskt-kemiska förändringar av kostfiber vid hantering, lagring och processning
Participatory strategic communication: From one- and two-way communication to participatory communication through social media
Stability and Efficiency from a neo-Keynesian Viewpoint
Hankel-type Model Reduction Based on Frequency Response Matching
In this paper, a stability preserving model reduction algorithm for single-input single-output linear time invariant systems is presented. It performs a data fitting in the frequency domain using semidefinite programming methods. Computing the frequency response of a model can be done efficiently even for large scale models making this approach applicable to those. The relaxation used to obtain a
Constrained online resource control using convex programming based allocation
A resource allocation algorithm aimed at embedded multi- media systems is presented. Particular emphasis is placed on computational efficiency, suitability for fixed point im- plementation and being able to solve the allocation at run- time when parameters or dynamics change. The algorithm is derived from classic convex optimization theory and the resulting real time properties are studied in simu
Optics of surface textured thin-film silicon solar cells
The optical wave propagation in microcrystalline thin-film silicon solar cells with integrated triangular surface texture was investigated. The influence of the periodic profile dimensions and absorber layer thickness on the short circuit current and quantum efficiencies was analyzed. The optics of the solar cell was calculated by using a finite difference time domain approach to solve the Maxwell
A traffic safety program for a Swedish town
Reflecting on social influence in networks
This paper builds on the logical model of opinion dynamics under social influence in networks proposed by Liu, Seligman, and Girard (2014) as well as on the generalization proposed by Christoff and Hansen (2013). While both accounts of social influence show interesting dynamics, they both assume that agents do not reflect on how they are affected by such influence. This paper shows that, if agents
Picture viewing and picture description
The black hole of Culture?
Scientification of teaching as State initiated professionalization: A road to professional status?
Today teachers in elementary and secondary schools aspire toward a professional status in the same category as that of engineers, business managers and lawyers. However, these ambitions are not an exclusively modern phenomenon. This paper analyses influences on professionalization efforts in relation to teaching and teacher education from a historical perspective. It traces efforts toward professi
A two-level estimator for time varying parameters
A crucial part in an adaptive control system is the estimation of the unknown parameters of the process. The estimation is often done using a Kalman filter or an Extended Kalman filter. These estimators give good results if the parameters are not varying too fast. When the parameters are varying fast there are difficulties for the estimator to follow the variations. This paper outlines a new appr
En firad stjärnas öden och äventyr
On a Synthesis Method for Robust PID controllers for a class of uncertainties
PID controller design is considered where optimal controller parametersare found with constraint on maximum sensitivity and robustness withregard to cone bounded static nonlinearity acting on the plant.
An Overview of the Modeling Language Modelica
Two Essays on Non-linear Pricing and Equity with an application to the control of a Natural Monopoly
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