Physical bounds on the directivity Q-factor quotient and optimal current distributions are determined for antennas of arbitrary shape and size using an optimization formulation. A variational approach offers closed form solutions for small antennas expressed in the polarizability of the antenna structure. Finite sized antennas are solved using Lagrangian parameters in a method of moments formulati

Regional cerebral blood flow was measured in 21 normotensive subjects during supine rest and during head-up tilt to 70 degrees. The results showed significant and consistent regional cerebral blood flow changes in the frontal areas with lower relative flow distribution values (percentage of mean flow) during head-up tilt than during supine rest. The lower frontal flow distribution values during ti

The almost complete focus on the aggregate level in previous research on demographic, socioeconomic and cultural determinants of the fertility transition means that we to a large extent not only lack knowledge about the specific mechanisms of the decline, but also its socioeconomic patterns. In this paper we explore socioeconomic fertility differentials in an industrializing community of southern

In this thesis tactical intelligence collection is studied. The aim is to investigate how the intelligence collection is affected by using a gender perspective. In the study interviews with experienced collectors are made and the data is analyzed using content analysis. It is found that gender affects which type of intelligence can be collected and how the collector can act in a tactical situation

Popular Abstract in Swedish Hydrogen holds a great promise as an efficient and clean future energy carrier due to its high energy density and lack of pollutant generation. Anaerobic degradation of organic substrates by heterotrophic microorganisms enables the production of hydrogen from a wide spectrum of agricultural feedstock and waste products. Using thermophiles in this process is preferable fHydrogen holds a great promise as an efficient and clean future energy carrier due to its high energy density and lack of pollutant generation. Anaerobic degradation of organic substrates by heterotrophic microorganisms enables the production of hydrogen from a wide spectrum of agricultural feedstock and waste products. Using thermophiles in this process is preferable for maximizing the substrate

Just like other newly introduced concepts such as 'science', 'culture', or 'religion', the widely used Chinese term for 'profession' – zhiye – has been established with its modern meaning only in the course of this century, especially after the foundation of the 'Chinese Society of Vocational Education' by Huang Yanpei in 1917. However, the term itself is not a new one, but is the product of ancie