Successful development of software systems depends on the quality of the requirements engineering process. Use cases and scenarios are promising vehicles for eliciting, specifying and validating requirements. This thesis investigates the role of use case modelling in requirements engineering and its relation to system verification and validation. The thesis includes studies of concepts and represe

Heat and mass transfer in minced meat patties (D = 100 mm, H = 10 mm) were studied during frying from the frozen state (-20 degreesC) to a Centre temperature of 72 degreesC in a double-sided pan fryer. The chemical composition of the meat raw material was varied to study the effect of the water, fat and connective tissue content and the water-protein ratio on the mass transfer (total loss. fat and

The Homogeneous Charge Compression Ignition (HCCI) combustionconcept lacks direct ignition timing control, instead the autoignition depends on the operating condition. Since auto ignition of ahomogeneous mixture is very sensitive to operating conditions, a fastcombustion timing control is necessary for reliable operation. Hence,feedback is needed and the crank angle of 50% burnt (CA50) has provedt

The anatomy of 11 genera earlier included in the Usneaceae, i.e. Bryocaulon Karnef., Chondropsis NyI., Cornicularia Hoffm., Evernia Ach., Everniopsis Nyl., Himantormia Lamb, Letharia (Th. Fr.) Zahlbr., Lethariella (Mot.) Krog, Protousnea (Mot.) Krog, Pseudevernia Zopf and Usnea Adanson have been examined. Particular emphasis has been paid to the development of the apothecia and the formation of a

In order to plan for and implement research on the outcome of the technical aid prescription process, more knowledge about the documentation of the process is imperative. The overarching aim of this study was to survey documentation quality aspects in patient records in community-based OT, with a particular focus on the technical aid prescription process. An additional aim was to compare the quali

Abstract is not available

An alternative experimental outline to measure homodyne detected three-pulse photon-echo data is presented. The novel experimental approach allowing for online monitoring and correction of experimental timing and stability is discussed in detail using the paradigm system of Nile blue in alcohol solution. It is shown that excellent signal-to-noise ratios together with high reproducibility of the da

Logarithmic norms are often used to estimate stability and perturbation bounds in linear ODEs. Extensions to other classes of problems such as nonlinear dynamics, DAEs and PDEs require careful modifications of the logarithmic norm. With a conceptual focus, we combine the extension to nonlinear ODEs [15] with that of matrix pencils [10] in order to treat nonlinear DAEs with a view to cover certain

OBJECTIVE: To ascertain whether the perinatal cerebral blood flow velocity differed between vaginally delivered appropriate for gestational age (vag. AGA) term babies, AGA babies delivered by Caesarean section (C.s. AGA), and small for gestational age (C.s. SGA) babies also delivered by Caesarean section. STUDY DESIGN: Forty-five babies were examined by Doppler ultrasound of the middle cerebral ar

Popular Abstract in Swedish Efter diskoteksbranden i Göteborg 1998, då 63 ungdomar dog och långt fler skadades, öppnades över 100 krisgrupper och krisjourer av stadsdelsförvaltningar, sjukhus och frivilligorganisationer. Avhandlingen bygger på intervjuer med 21 drabbade och 29 företrädare för olika krisgrupper. De drabbade fick av krisgrupperna praktisk hjälp och stöd t.ex. när de anhöriga skulle The aim of the dissertation is to study the organized professional process and the spontaneous integrating and unifying process after the discotheque fire in Gothenburg 1998, when 63 young people died. Over a hundred crisis groups and duty centres were opened for the affected people. These groups are composed of representatives of the social services, psychiatry, the churches and voluntary organiz