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During recent years we have seen several large-scale crises. The 9/11 terror attacks, tsunamis, storms, floods and bombings have all caused a great deal of damage. A common factor in these crises has been the need for information and one important source of information is usually Web sites. In this work we investigate and design an overload control system for Web sites that are vital in crises. Th
In very-large multiple-input multiple-output (MIMO) systems, the BS (base station) is equipped with very large number of antennas as compared to previously considered systems. There are various advantages of increasing the number of antennas, and some schemes would require handling large matrices for joint processing (pre-coding) at the base station. The dirty paper coding (DPC) is an optimal pre-
Popular Abstract in Swedish Sedan kartläggningen av det mänskliga genomet, har mer fokus lagts på dess produkt, proteomet, som definieras som de proteiner som uttrycks i en cell vid en viss tidpunkt. Proteomets dynamiska egenskaper gör det till en fantastisk källa för så kallade biomarkörer, det vill säga molekyler som genom deras koncentrationsmönster kan användas för att särskilja sjuka och frisMultiplex protein quantification, proteomics, is essential for uncovering new biomarkers and understanding biology. Liquid chromatography coupled to mass spectrometry (LC-MS) is the predominant technique for these measurements. In this thesis, optimization and quality control strategies for different phases of the LC-MS pipeline have been developed. Due to the inherent complexity and dynamic rang
A simple analytical model for the link loss between two very low profile wireless body area network transceivers located at the same level on the human torso is presented. The model is based on the attenuation of the creeping waves on an elliptical approximation of the human torso. A good agreement between the model and the FDTD simulations on realistic heterogeneous phantoms of different age and
Scoliosis is an S-shaped sideways curvature of the spine leading to the shape change of the torso Idiopathic scoliosis is one form of this disease with unknown aetiology. 300 children out of 100 000 need treatment. Treatment duration is till the end of the patient’s growth age (till the ossification of the skeleton) and the brace should be worn 23 hours a day. Problems with brace are: heat, moist,
Popular Abstract in Swedish Partikelfysiken är studien av naturens minsta beståndsdelar --- De så kallade \emph{elementarpartiklarna}. All materia i universum består av elementarpartiklar. Den teori som beskriver vilka partiklar som finns och hur de uppför sig heter \emph{Standardmodellen}. Teorin har historiskt sett varit mycket framgångsrik. Den har gång på gång förutspått existensen av nya partThis thesis documents my work in the luminosity and supersymmetry groups of the ATLAS experiment at the Large Hadron Collider. The theory of supersymmetry and the concept of luminosity are introduced. The ATLAS experiment is described with special focus on a luminosity monitor called LUCID. A data-driven luminosity calibration method is presented and evaluated using the LUCID detector. This method
This paper presents three mathematical formulations for designing robust two-layer networks carrying elastic traffic. The formulations differ by the way flow reconfiguration is performed in the case of link failures. An iterative algorithm to solve the problems is given and an extensive numerical study is provided comparing the effectiveness of the three reconfiguration approaches. The formulation
The innovation process is a challenge for companies trying to achieve better outcomes through new ideas or products. The related literature discusses the importance of innovation as a learning process, underlined by a design perspective. Supported by design, the innovation process combines multidisciplinary aspects of creativity and dynamism, mainly for end-user oriented industries. For other indu
A highly optimized Monte Carlo (MC) code package for simulating light transport is developed on the latest graphics processing unit (GPU) built for general-purpose computing from NVIDIA - the Fermi GPU. In biomedical optics, the MC method is the gold standard approach for simulating light transport in biological tissue, both due to its accuracy and its flexibility in modelling realistic, heterogen
A uniplanar-compact electromagnetic band-gap (UC-EBG) structure is implemented at 60 GHz on a conventional PTFE (polytetrafluoroethylene) substrate. The structure surrounds a stacked microstrip antenna with gridded parasitic patch. The UC-EBG implementation results in about 5 dB decrease in the antenna E-plane normalized radiation pattern for angles along the substrate. The measured antenna gain i
The university programmes are basically nationally based, developed from the historical needs of specific need of a society. The Bologna process is challenging the educational market mainly at post-graduate level. The exchange of students is still limited to a reduced number of curious and ambitious persons, many with a high interest for cultural exchange – the ‘exotic dimension’. Individual caree
Popular Abstract in Swedish Fysikalisk kemi är en gren inom naturvetenskapen som behandlar frågor kring molekylers fysiska och kemiska egenskaper, t.ex. i vilka ämnen molekylerna löser sig, vid vilken temperatur de förgasas eller hur de rör sig. Grundpelarna sägs vara struktur, jämvikt och förändring, d.v.s. hur fördelar sig molekylerna i ett medium och vilka krafter definierar slutresultatet och Aggregation in protein-surfactant systems have been studied with the ambition of reaching a deeper understanding of the balance of the interaction forces involved. A pure system with maximized electrostatic interactions has been used. The approach has been to use a step-wise sample preparation where initially a stoichiometric protein-surfactant salt is precipitated and freeze-dried. Secondly, the
