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A lidar system, incorporating tunable dye lasers and a 25-cm diam Newtonian telescope, has been constructed and applied in atmospheric pollution monitoring. The system, which is fully controlled by a specially designed microcomputer, has been used in several field tests, where stack effluents as well as the ambient air have been monitored. Results from particle, NO2, and SO2 measurements are discu

Popular Abstract in Swedish Avhandlingen behandlar elektromagnetisk vågutbredning i dispersiva material. Ett material är dispersivt om vågor med olika frekvenser propagerar genom det med olika hastigheter, dvs om materialparametrar är frekvensberoende. Pulsutbredning i dispersiva media karakteriseras av att pulsens form ändras under utbredning genom materialet. Traditionellt behandlas vågutbredninThis thesis treats the problem of transient electromagnetic pulse propagation in temporally dispersive media. The analysis is performed using time-domain techniques. In particular, the dispersive wave splitting which decouples the Maxwell equations both in vacuum and inside the medium is utilized. Complex time-dependent electromagnetic fields are introduced. These fields simplify the Maxwell equat

Gender Differences in Learning and Working with Technology: Social Constructs and Cultural Contexts discusses the social studies of information technology, specifically how IT skills are learned and how such skills are gendered. This book draws upon the disciplines of sociology, education, cultural and media studies, and gender studies, using a variety of research methods and theoretical perspecti

Var drar man gränsen mellan offentligt och privat i hälso- och sjukvården? Det finns tecken som tyder på att vi går mot en alltmer fragmenterad hälso- och sjukvård. Hälso- och sjukvården berör alla och debatteras ständigt. De senaste åren har debatten i stor utsträckning handlat om var gränsen ska gå mellan offentligt och privat. Ska privata aktörer äga akutsjukhus? I vilken utsträckning kommer v

The paper provides exact and approximate solutions to the title problems. Time-hardening creep is adopted and the stress dependence is assumed to follow the exponential expression proposed by Soderberg. Even though the exact solutions are easy to work with, some approximate solutions are discussed. These approximate solutions are obtained from the exact ones by simply ignoring certain terms; error

This paper discusses the professional roles of information systems analysts and users, focusing on a perspective of human intensive, rather than software intensive information systems. The concept of ‘meaningful use’ is discussed in re-lation to measures of success/failure in IS development. The authors consider how a number of different aspects of reductionism may distort analyses, so that proces