Device for measuring the temperature of liquid and gaseous hydrogen Final report

Fabrication and test data cryogenic temperature transducer extremely fast in response to temperature changes - device for measuring temperature of liquid and gaseous hydroge

How can the concepts of habitus and field help us to understand the engagement of educational workers in higher Education?

In ‘Making a European area of lifelong learning a reality’, the EU stressed the role of universities in relation to lifelong learning, a role that entails a need for widening access to universities, particularly for those not coming through the traditional direct route of upper secondary education. As teachers play a significant role in the quality of the lifelong learning as well as in motivating future generations to take part in lifelong learning, education and training for teachers becomes important; not only in relation to initial teacher education, but also in relation to a continuous development of knowledge and skills. This paper represents the first stage of a larger comparative project intended to examine and compare educational workers’ (i.e. professionals involved in teaching in the class room) participation in higher education in England and Denmark, their access and interest. In particular, the paper relates participation and engagement to national and international educational policies and frames this work within an examination of the social background of the professional groups. The key research questions at this stage of the work are methodological and can be summed up by the overarching question, “How can the concepts of habitus and field help us to understand levels of engagement of educational workers in Higher Education”? The paper reports the results of our review of current policies and our efforts to identify the structural relations within the educational professional fields in each country. To do so we are developing a theoretical model using the relational analytical approach advocated by Bourdieu. As such, our work is an early stage attempt at operationalising Bourdieu’s observations regarding the dynamics of field. This seems to us to provide an important conceptual approach to understanding the habitus of educational workers in the context of the dynamics of a fast changing policy arena and the complexities of the backgrounds of individuals working in the educational field. The model attempts to build in the reflexivity that Bourdieu demands for a ‘science’ that is not weakened by over-emphasis on either the objective structural relations or the subjective phenomenology of experience. Thus, the paper presents a preliminary contextual analysis of the factors that enable an understanding of engagement or lack of engagement in higher level learning among school-based education workers in the two EU countries and is related to a larger research project that explores habitus (both individual and collective) among these groups of education workers

MARGINAL AGRICULTURAL LAND CLASSIFICATION: A NEW APPROACH

Land Economics/Use,

CO2 laser waveguiding in proton implanted GaAs

Surface layers capable of supporting optical modes at 10.6 microns have been produced in n-type GaAs wafers through 300 keV proton implantation. The dominant mechanism for this effect appears to be free carrier compensation. Characterization of the implanted layers by analysis of infrared reflectivity spectra and synchronous coupling at 10.6 microns produced results in good agreement with elementary models. These results of sample characterization by infrared reflectivity and by CO2 laser waveguiding as implanted are presented and evaluated

PRODUCTION RISK REVISITED IN A STOCHASTIC FRONTIER FRAMEWORK: EVALUATING NOISE AND INEFFICIENCY IN COVER CROP SYSTEMS

This paper investigates both risk and technical inefficiency in a general stochastic frontier framework that is consistent with the Just-Pope framework. After applying the model to two separate cash crop-cover crop systems, the more general stochastic frontier model is found to reorder the noisiness of alternative cover crop regimes.Crop Production/Industries, Risk and Uncertainty,

LISA, binary stars, and the mass of the graviton

We extend and improve earlier estimates of the ability of the proposed LISA (Laser Interferometer Space Antenna) gravitational wave detector to place upper bounds on the graviton mass, m_g, by comparing the arrival times of gravitational and electromagnetic signals from binary star systems. We show that the best possible limit on m_g obtainable this way is ~ 50 times better than the current limit set by Solar System measurements. Among currently known, well-understood binaries, 4U1820-30 is the best for this purpose; LISA observations of 4U1820-30 should yield a limit ~ 3-4 times better than the present Solar System bound. AM CVn-type binaries offer the prospect of improving the limit by a factor of 10, if such systems can be better understood by the time of the LISA mission. We briefly discuss the likelihood that radio and optical searches during the next decade will yield binaries that more closely approach the best possible case.Comment: ReVTeX 4, 6 pages, 1 figure, submitted to Phys Rev

Risk and Return for Bioenergy Crops under Alternative Contracting Arrangements

This study evaluated the potential to supply biomass feedstocks under alternative contract arrangements for a northwest Tennessee 2,400 acre grain farm. The four potential types of contracts analyzed in this study offer different levels of biomass price, yield, and production cost risk sharing between the representative farm and the processor.Farm Management, Resource /Energy Economics and Policy,

Study of the de Almeida-Thouless line using power-law diluted one-dimensional Ising spin glasses

We test for the existence of a spin-glass phase transition, the de Almeida-Thouless line, in an externally-applied (random) magnetic field by performing Monte Carlo simulations on a power-law diluted one-dimensional Ising spin glass for very large system sizes. We find that an Almeida-Thouless line only occurs in the mean field regime, which corresponds, for a short-range spin glass, to dimension d larger than 6.Comment: 4 pages, 2 figures, 1 tabl

Thermal and hydrodynamic effects in the ordering of lamellar fluids

Phase separation in a complex fluid with lamellar order has been studied in the case of cold thermal fronts propagating diffusively from external walls. The velocity hydrodynamic modes are taken into account by coupling the convection-diffusion equation for the order parameter to a generalised Navier-Stokes equation. The dynamical equations are simulated by implementing a hybrid method based on a lattice Boltzmann algorithm coupled to finite difference schemes. Simulations show that the ordering process occurs with morphologies depending on the speed of the thermal fronts or, equivalently, on the value of the thermal conductivity {\xi}. At large value of {\xi}, as in instantaneous quenching, the system is frozen in entangled configurations at high viscosity while consists of grains with well ordered lamellae at low viscosity. By decreasing the value of {\xi}, a regime with very ordered lamellae parallel to the thermal fronts is found. At very low values of {\xi} the preferred orientation is perpendicular to the walls in d = 2, while perpendicular order is lost moving far from the walls in d = 3.Comment: 8 pages, 3 figures. Accepted for publication in Phil. Trans. of Royal Soc, Ser