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Stability in presence of (possibly varying)time-delays in a control loopconsisting of a continuous-time plant and a discrete-time controlleris studied.A simple stability criterion is developed—agraphical test in a Bode plot of the closed loop system. The graphicaltest makes it very easy to design the controller for time-delayrobustness.
This paper presents an interactive tool which allows to study the problem of systems with delays. The developed tool provides several examples in order to compare PI control and Smith Predictor approaches for processes with delay. Robustness problems due to presence of model uncertainties can also be studied, as well as other control structures to face the different problems that the original Smit
A predictive PI (proportional-integral) controller with dead-time compensation is described. Its advantage compared with previous dead-time compensating controllers is that although it also contains five parameters, only three are adjusted by the operator, namely, the gain, the integral time and the dead time. The controller is also suited for processes with varying dead times. Conceptually, the n
Coping with complexity. Sociocybernetics as a Framework for Communication Management.
Brain injury rehabilitation is a long and difficult process that includes training of so-called instrumental activities of daily living (IADL). This type of training involves activities like preparing meals, doing housework, grocery shopping etc. and it is often used by occupational therapists when they teach brain injury patients how to manage their daily life. A computer-generated Virtual Envir
In this paper we have proposed a test cost model for core-based 3D Stacked ICs (SICs) connected by Through Silicon Vias (TSVs). Unlike in the case of non-stacked chips, where the test flow is well defined by applying the same test schedule both at wafer sort and at package test, the most cost-efficient test flow for 3D TSV-SICs is yet undefined. Therefore, analysing the various alternatives of tes
This paper develops a very simple test for the null hypothesis of no cointegration in panel data. The test is general enough to allow for heteroskedastic and serially correlated errors, unit-specific time trends, cross-sectional dependence and unknown structural breaks in both the intercept and slope of the cointegrated regression, which may be located at different dates for different units. The l
One of the most fundamental questions in the field of joint communication and control is the following: if a plant and controller communicate at a limited data rate and no restrictions but causality are placed on the coding and control policy, what is the smallest rate at which stabilisation is possible? In this paper, the problem of stabilising a deterministic, partially observed, discrete-time,
IntroductionGlobal water scarcity necessitates innovative approaches to water treatment. Membrane technology has emerged as a key solution, demonstrating its effectiveness across a range of applications, from seawater desalination using reverse osmosis to wastewater treatment with membrane bioreactors. This presentation will introduce three novel water treatment concepts based on membrane technolo
Objective: To evaluate (1) the frequency of aquaporin-4 antibody (AQP4-ab)-seropositive cases among patients treated with natalizumab (NAT) and previously diagnosed with MS (MSNAT) in a nationwide cohort, (2) the clinical course of NAT-treated AQP4-ab-seropositive neuromyelitis optica spectrum disorder (NMOSD) patients (NMONAT), (3) AQP4-ab titers in NMONAT and AQP4-ab-seropositive NMOSD treated w
Financial markets exhibit time-varying volatility and cross-asset correlation. To construct and optimize a risk-adjusted portfolio and account for underlying collinearity between se- curities, a good understanding of these two dynamics is important. In this study global equity indices are modeled with the purpose of improving the forecasting accuracy of time-varying correlations, as well as distin
Sign up here if you want to be early securing a seat at the symposium "The EU AI Act in Context: Implementation, Interaction, and Global Developments" in and from Lund 6 October 2026. Name Organisation Email (required) I would like to have a reminder when you open the official registration for the hybrid symposium The EU AI Act in Context: Implementation, Interaction, and Global Developments 6 Oct
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