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Learning from incidents is important for improving safety. Many companies spend a great deal of time and money on such learning procedures. The objectives of this paper are to present some early results from a project aimed at revealing weaknesses in the procedures for learning from incidents and to discuss improvements in these procedures, especially in chemical process industries. The empirical
The effects of combustion phase and fuel on smoke particle emissions from a wood stove operated with three different wood fuels and from a corn stove were investigated. A single-particle mass spectrometer (aerosol time of flight mass spectrometer (ATOFMS)) was used for time-and size-resolved chemical signatures and a scanning mobility particle sizer (SMPS) was used for online mobility size distrib
Software architecture, the underlying structure to a software system, is an asset which can be invested in. Such investments can later be capitalized on in the form of e.g. increased flexibility and enhanced maintainability. These benefits may be gained in a system developed in one project, but are much more visible in a strategic perspective when several projects share resources. Architectural de
This paper gives an overview of the present knowledge regarding the interaction between the climatic conditions at the concrete surface and the corresponding conditions inside the concrete. The phenomena dealt with are those involved in frost damage, frost and salt scaling and reinforcement corrosion, such as temperature and moisture conditions in the near surface regions, carbonation and chloride
Symptoms and signs of the urogenital estrogen deficiency syndrome occur relatively late in a women's life when endogenous estrogen levels are well below those required to stimulate endometrial growth. At age 60 and above symptoms are common and progress with advancing age. The first and most common complaint is vaginal dryness, but symptoms of lost control of micturition as well as urge incontinen
Recycling as part of environmental considerations has become a common feature in architecture and building construction. Recycling of building waste can make a considerable contribution to reducing the total environmental impact of the building sector. To increase the scope for recycling in the future, aspects of recycling have to be included in the design phase. Design for disassembly is a key ta
The spectral properties of financial correlation matrices can show features known from completely random matrices. A major reason is noise originating from the finite lengths of the financial time series used to compute the correlation matrix elements. In recent years, various methods have been proposed to reduce this noise, i.e. to clean the correlation matrices. This is of direct practical relev
Popular Abstract in Swedish Modellering och simulering är etablerade tekniker för att lösa designproblem inom många olika ingenjörsdiscipliner idag. Dedicerade språk, såsom Modelica, och effektiva mjukvaror finns också tillgängliga. I denna avhandling presenteras en språklig utvidgning av Modelica, Optimica, som är avsedd för formulering av dynamiska optimeringsproblem. För att demonstrera användnModeling and simulation are established techniques for solving design problems in a wide range of engineering disciplines today. Dedicated computer languages, such as Modelica, and efficient software tools are available. In this thesis, an extension of Modelica, Optimica, targeted at dynamic optimization of Modelica models is proposed. In order to demonstrate the Optimica extension, supporting sof
This thesis regards datapath design and analysis at several abstraction levels. Five papers are presented that focus on datapath design for mobile communication systems and design methodologies for such datapaths. Paper I discusses different aspects of Turbo channel decoder design for high speed and low power applications. It is shown that critical path delay is significantly reduced by simple re
The spectral properties of financial correlation matrices can show features known from completely random matrices. A major reason is noise originating from the finite lengths of the financial time series used to compute the correlation matrix elements. In recent years, various methods have been proposed to reduce this noise, i.e. to clean the correlation matrices. This is of direct practical relev
The development of treatment planning methods in radiation therapy requires dose calculation methods that are both accurate and general enough to provide a dose per unit monitor setting for a broad variety of fields and beam modifiers. The purpose of this work was to develop models for calculation of scatter and transmission for photon beam attenuators such as compensating filters, wedges, and blo
We propose a test resource partitioning and optimization technique for core-based designs. Our technique includes test set selection and test resource floor-planning with the aim of minimizing the total test application time and the routing of the added TAM (test access mechanism) wires. A feature of our approach is that it pinpoints bottlenecks that are likely to limit the test solution, which is
Silicon microtechnology has been used to develop a microstructure toolbox in order to enable high accuracy protein identification. During the last 2 years we developed and applied monocrystalline silicon structures and established new automated protein analysis platforms, The development of a high throughput protein platform is presented where fully automated protein identifications are performed.
This thesis presents results from two areas of research. Firstly, the resonant coherent laser techniques polarization spectroscopy (PS), degenerate four-wave mixing (DFWM) and stimulated emission (SE) have been developed in the general field of combustion diagnostics. Secondly, laser induced fluorescence (LIF) has been developed and applied for the visualization of mixture fractions in turbulent n
Recurrent major depressive disorder with regular seasonal patterns, commonly known as seasonal affective disorder (SAD), has evoked substantial research in the last two decades. It is now recognised that SAD is a common condition with prevalence rates between 0.4% and 2.9% of the general population, and that patients with SAD experience significant morbidity and impairment in psychosocial function
Popular Abstract in Swedish Bankerna har under de senaste decennierna konfronterats med och genomgått stora förändringar. En global ekonomi har vuxit fram och konkurrensen inom banksektorn har hårdnat, vilket bl a har resulterat i mindre räntemarginaler på lån och krediter. En konsekvens av detta är att man har tvingats minska resurserna som spenderas på varje enskild kund, vilket i sin tur har leThe competition in the banking industry has during the last decades been intensified resulting in smaller interest margins. As a consequence, the resources spent on each credit customer have had to be decreased, resulting in less interaction and a perceived limited access to valuable information. This has especially been the case in the banks´credit management of small firms. Earlier research app
This paper assesses the performance of poverty alleviation projects, asks why so many have failed, and why successful projects have been successful. It gives a retrospective. overview of the development of the concept of poverty, and argues that the way towards poverty eradication goes through holistic, participatory, approaches that build on sharing of knowledge and learning by doing. Projects an
The effects of high optical depth phenomena, such as superradiance, are investigated in potential quantum memory materials. The results may have relevance for several schemes, including controlled reversible inhomogeneous broadening, atomic frequency combs, and quantum memories based on electromagnetically induced transparency, which are based on using ensembles as storage media. It is shown that
