This thesis deals with a multi-levl inventory system, consisting of one central warehouse and number of retails, facing stochastic demand.

The ESS elliptical superconducting Linac consists of two types of 704.42 MHz cavities, medium and high beta, to accelerate the beam from 216 MeV (spoke cavity Linac) up to the final energy at 2 GeV. The last Linac optimization, called Optimus+, has been carried out taking into account the limitations of SRF cavity performance (field emission). The medium and high-beta parts of the Linac are compos

We consider the problem of stabilizing and minimizing the disturbance response of a SISO LTI plant, subject to a stochastic disturbance, over an analog communication channel with additive white noise and a signal-to-noise ratio (SNR) constraint. The controller is linear, based on output feedback and has a structure with two degrees of freedom: One part represents sensing and encoding operations an

Different system identification methods have been applied to determine ship steering dynamics from full-scale experiments. The techniques used include output error, maximum likelihood and more general prediction error methods. Different model structures have been investigated ranging from input-output models in difference equation form to the equations of motion in their natural form. Effects of d

We address the antenna subset selection problem in spatially correlated MIMO channels. To reduce the severe performance degradation of the traditional antenna selection scheme in correlated channels, we propose to embed DFT operations in the RF chains. The resulting system shows a significant advantage both for diversity schemes and for the capacity of spatial multiplexing, while requiring only a

This paper focuses on the radio wave propagation through energy saving windows. These panes have a metallic shielding that keeps the heat inside the building during winter and outside during summer. Unfortunately, this covering also has an opaque behaviour at microwave frequencies. A design of energy saving window panes with high transmission at 900MHz and 1800MHz is presented. The high transmissi

In recent years shortages of donated blood have become a growing problem for health care systems world-wide. Blood substitutes based on human haemoglobin (Hb) could potentially ameliorate this situation. However, clinical trials have indicated problems due to e.g. oxidative stress. This thesis describes ways to detoxify the Hb by modulating radical reactions or by reducing radical toxicity using a

Mat och ätande väcker känslor till liv, det handlar om njutning och avsmak, men också om oro, frustration och glädje. Floran av idéer, trender och råd om mat och måltider tycks ständigt växa. I hushåll med yngre barn är normer kring mat och ätande särskilt starka och involverar i sin tur specifik kunskap om hur den ”riktiga” måltiden görs. I den här artikeln handlar det inte om att kritiskt gransk

Today embedded system development is a complex task. To aid the engineers new methodologies and languages are emerging. During the development the system is modelled using different tools and languages. Transformations between the models are traditionally done manually. We investigate the automation of this process, specifically we are looking at automatic UML to SystemC transformation. In this pa