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A voltage reference has been implemented in a standard 0.35 μm CMOS process. A temperature coefficient of 12 ppm/°C is achieved in virtue of a complete suppression of the temperature dependence of the carrier mobility. The line sensitivity is 0.46 %/V and the maximum supply current, measured at 80°C, is 130 nA. The PSSR at 100 Hz and 10 MHz is -59 dB and -52 dB, respectively.
This is a presentation of the newly established research program entitled "Elderly People and Design" at the Department of Design Sciences, Lund University's Institute of Technology. Several of the departmental research divisions have many years exp
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
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
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
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
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
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 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
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.
