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Constraining the temperature of computing systems has become a dominant design aspect. The supply voltage decrease has lost its pace even though the feature size is shrinking constantly. This results in an increased number of transistors per unit of area and hence a growing power density. Researchers started investigating dynamic thermal management techniques to trade-off performance for energy co
This paper presents architectures for supporting dynamic data scaling in pipeline fast Fourier transforms (FFTs), suitable when implementing large size FFTs in applications such as digital video broadcasting and digital holographic imaging. In a pipeline FFT, data is continuously streaming and must, hence, be scaled without stalling the dataflow. We propose a hybrid floating-point scheme with tail
We consider the classical 3-state Moore-Greitzer model, which is commonly used for approximating dynamics of deviations of flow and pressure variables in an axial compressor from their nominal steady-state values. The linearization of the nonlinear system is not controllable and, therefore, even local asymptotic stability cannot be achieved using methods of linear control theory. We propose a fami
Research has been performed model the dynamics of different kinds of wastewater treatment systems. Plant models are built up from standard modules of subprocesses. Available model knowledge has been packaged into suitable software modules and a library of simulation models has been created. The paper describes this library and the kind of simulations that can be performed.
Safe motion planning for autonomous driving systems in uncertain environments remains a significant challenge. The inherent traffic uncertainties caused by both the uncertain control and behavioral intentions of dynamic surrounding vehicles (SVs) are difficult to anticipate, hindering accurate motion prediction and complicating safe decision-making for the autonomous ego vehicle (EV). To mitigate
Understanding wireless channels is crucial for the design of wireless systems. For mobile communication, sounders and antenna arrays with short measurement times are required to simultaneously capture the dynamic and spatial channel characteristics. Switched antenna arrays are an attractive option that can overcome the high cost of real arrays and the long measurement times of virtual arrays. Opti
We conduct research that enhances our understanding of the major issues in the Middle East. The goal is to promote democracy, peace and sustainable development in this dynamic yet unstable region. The Middle East and North Africa (MENA) is a geopolitical region that has experienced significant economic and political change in recent decades. According to the UN, the region’s population is expected
https://www.lunduniversity.lu.se/research-and-innovation/focus-areas/strategic-research-areas/middle-east-research - 2026-10-07
In this master thesis the consistent initialization problem is studied and three different algorithms were developed regarding the subject area - a graph algorithm used for solving the initialization problem, a parallel algorithm to enable parallel computations when solving the initialization problem and lastly a genetic algorithm used as a preprocessing stage for parallelization. The thesis is b
Ongoing work in developing a general structure and a comprehensive components library aiming at modelling liquid-food process lines is presented. The dynamic component models were developed in an object-oriented library structure based on the dynamic modelling language Modelica using the object-oriented graphical tool Dymola. The models were based on fundamental conservation laws and can simulate
We study the complexity of the dynamic partial sum problem in the cell-probe model. We give the model access to nondeterministic queries and prove that the problem remains hard. We give the model access to the right answer +/-1 as an oracle and prove that the problem remains hard. This suggests which kind of information is hard to maintain. From these results, we derive a number of lower bounds fo
Although the research on the design of heterogeneous concurrent systems has a long and rich history, a unified design methodology and tool support have not emerged so far. Therefore, the creation of such systems remains a difficult, time-consuming and error-prone process. The absence of principled support for system evaluation and optimization at high level of abstraction makes the quality of the
In this article, we describe a new command, xtbcfe, that performs the iterative bootstrap-based bias correction for the fixed-effects estimator in dynamic panels proposed by Everaert and Pozzi (2007, Journal of Economic Dynamics and Control 31: 1160–1184). We first simplify the core of their algorithm by using the invariance principle and subsequently extend it to allow for unbalanced and higher o
