Filtyp
Heat exchangers are used in proton exchange membrane fuel cell systems (PEMFCs) for stack cooling, intercooling, water condensation and fuel reforming. Especially, the heat exchanger for the intercooling before the humidifier is investigated in this paper. It is found that, at high pressure or high mass flow rate, the need to cool the air (oxidant) is large. The heat exchanger uses coolant water f
In this paper, we present a statistical evaluation of an outdoor-to-indoor multiple-input multiple-output (MIMO) measurement campaign performed at 5.2 GHz. 159 measurement locations in an office building are analyzed. Our analysis pays special attention to two key assumptions that are widely used in stochastic channel models. An assumption that is used in practically every channel model is that th
Papers from The Study of the Historical Jesus research group of the European Association of Biblical Studies, 2012-2014.
Popular Abstract in Swedish Om flyttningens betydelse för utbredningsmönster för arktiska fåglar Sara Henningsson Fågelflyttning är en anmärkningsvärt framgångsrik strategi som möjliggör att en större mängd individer kan försörjas genom rörelser mellan olika regioner. Inom dessa olika områden, som ofta ligger mycket långt ifrån varandra, kan fåglarna utnyttja stora säsongsmässigt tillgängliga resFlexibility as well as constraints to the evolution of migration routes has the possibility of affecting large-scale patterns of geographical ranges of animals both by facilitating, but sometimes restricting, accessibility to and colonization of new regions. This dissertation concerns the broad-scale effects migration has on the distributional patterns of birds in the Arctic. I studied the circum
Since March 1992 the total column abundances of several tropospheric and stratospheric trace gases have been monitored year-round from the Network for Detection of Stratospheric Change station in Ny Alesund, Spitsbergen (78.9 degrees N, 11,9 degrees E). A groundbased Fourier transform infrared (FTIR) spectrometer performed these measurements using the Sun as a light source during the summer, and t
Many photochemical reactions involved in the sensing of and regulation by light and ultraviolet radiation by organisms consist of cis-trans (and trans-cis) isomerisations. This chapter starts with a description of these, and then goes on to the blue-light receptors crypto-chrome and phototropin, which use other chemical mechanisms, and concludes with a discus-sion of ultraviolet-B receptors.
Two families of braided block codes are analyzed, tightly braided block codes and sparsely braided block codes. Bounds on the free distance of tightly braided block codes are derived. Asymptotic iterative decoding performance of sparsely braided block codes is studied
A comprehensive article in the Swedish National Biography of the printer Johannes Snell, born and active in Northern Germany, but temporarily working in Denmark in 1482 and in Sweden 1483-84, where he printed the first books of these countries. Returned to Lübeck and still noticed in 1519.
Popular Abstract in Swedish Huvudsyftet med avhandlingen är att formulera en teoretiskt och empiriskt förankrad konsultationsmodell för psykologer i skolsammanhang. Idéer och handlingsstrategier tydliggörs så att de kan tillämpas, värderas och vidareutvecklas av andra yrkesutövare. De tänks även kunna utgöra en referensram för psykologers, specialpedagogers och andra specialisters teamarbete. VidaThe primary aim of this thesis is to formulate a theoretically and empirically based consultation model for psychologists in school contexts. Ideas and strategies are clarified so that they can be applied, evaluated, and further developed by other professionals. The model has been constructed with an interactional approach, with the stress on patterns of interaction between grown-ups and children
The aim of this short paper is to present an ongoing joint research project, Human Factors in Air Navigation Services (HUFA), between the Swedish Civil Aviation Administration and Lund University. Results from the study will only be given very briefly. The project focuses on human and organizational factors and safety in air traffic control.
