Event rates vs. cross sections at neutrino telescopes

One of the major goals of neutrino astronomy is to explore the otherwise unknown fluxes and interactions of ultrahigh energy neutrinos. The existing neutrino telescopes look at three types of events: particle showers, muons, and taus. In this paper we discuss the dependence of the event rates on the neutrino nucleon cross-sections as we scale the cross sections, with energy, in different scenarios beyond the standard model. Our focus will be on the IceCube detector.Comment: 3 pages, 2 figures; proceedings of the "TeV Particle Astrophysics II", Madison, Wisconsin; to be published in the Journal of Physics: Conference Serie

How and Why lslamophobia is tied to English Nationalism but not to Scottish Nationalism

Muslim minorities throughout Europe are under threat of collateral damage from the Blair/Bush \u27War on Terror.\u27 In Scotland they also have to cope with the added possibility that Scottish nationalism might develop an \u27ethnic\u27 as well as a \u27civic\u27 dimension. But is Scottish nationalism part of the problem or part of the solution? Paradoxically, Muslims are under less pressure in Scotland than in England, despite Scotland\u27s move over recent decades--psychologically as well as institutionally--towards nationalism

Improving agricultural productivity for poverty alleviation through integrated service provision with public-private sector partnerships: Examples and issues

Irrigation management / Crop production / Productivity / Constraints / Poverty / Farmers’ associations / Public sector / Private sector / Models / Food security / Sugarcane / Rice

Electromagnetic induction imaging with a radio-frequency atomic magnetometer

We report on a compact, tunable, and scalable to large arrays imaging device, based on a radio-frequency optically pumped atomic magnetometer operating in magnetic induction tomography modality. Imaging of conductive objects is performed at room temperature, in an unshielded environment and without background subtraction. Conductivity maps of target objects exhibit not only excellent performance in terms of shape reconstruction but also demonstrate detection of sub-millimetric cracks and penetration of conductive barriers. The results presented here demonstrate the potential of a future generation of imaging instruments, which combine magnetic induction tomography and the unmatched performance of atomic magnetometers.Comment: 5 pages, 5 figure

Multiplet resonance lifetimes in resonant inelastic X-ray scattering involving shallow core levels

Resonant inelastic X-ray scattering (RIXS) spectra of model copper- and nickel-based transition metal oxides are measured over a wide range of energies near the M-edge (h$\nu$=60-80eV) to better understand the properties of resonant scattering involving shallow core levels. Standard multiplet RIXS calculations are found to deviate significantly from the observed spectra. However, by incorporating the self consistently calculated decay lifetime for each intermediate resonance state within a given resonance edge, we obtain dramatically improved agreement between data and theory. Our results suggest that these textured lifetime corrections can enable a quantitative correspondence between first principles predictions and RIXS data on model multiplet systems. This accurate model is also used to analyze resonant elastic scattering, which displays the elastic Fano effect and provides a rough upper bound for the core hole shake-up response time.Comment: 6 pages, 3 figure

The role of the university entrepreneurial ecosystem in entrepreneurial finance: case studies of UK innovation knowledge centres

How to commercialize university research and create positive socio-economic impact is a fundamental research question that is under explored. Considerable public funds are invested in universities globally to create knowledge and then to explore its viability to exploit commercial value through supporting entrepreneurship. We explore how publicly funded research and commercialization of projects promote university’s science and technology (S&T) initiatives. Qualitative case studies, involving 45 interviews, examine three UK government-funded Innovation Knowledge Centres’ (IKCs) roles in commercializing three different emerging disruptive technologies: cyber security, digital construction and synthetic biology. An improved entrepreneurial finance (“entfin”) ecosystem is the catalyst to promote innovation, through public funds to empower industry and deliver an effective finance escalator. A “WHO” policy analysis framework examines: the “Why” rationale for public investment; “How” process of translation; and “Outcomes”. This identified how Entrepreneurial Finance combined with Intermediaries, Infrastructure, Training and Leadership impacts scientific research commercialization. We reveal several inter connectors that link maturity of projects, their locality and outcome horizons. Universities play an important intermediary role, regionally and globally to connect the wider entfin ecosystems. The conclusions suggest that government needs to improve the policy mix across university ecosystem actors to improve long horizon investment

The Coronal Structure of AB Doradus

We perform a numerical simulation of the corona of the young, rapidly rotating K0 dwarf AB Doradus using a global MHD model. The model is driven by a surface map of the radial magnetic field constructed using Zeeman-Doppler Imaging. We find that the global structure of the stellar corona is dominated by strong azimuthal tangling of the magnetic field due to the rapid rotation. The MHD solution enables us to calculate realistic Alfv\'en surfaces and we can therefore estimate the stellar mass loss rate and angular momentum loss rate without making undue theoretical simplifications. We consider three cases, parametrized by the base density of the corona, that span the range of possible solutions for the system. We find that overall, the mass and angular-momentum loss rates are higher than in the solar case; the mass loss rates are 10 to 500 times higher, and the angular momentum loss rate can be up to $3\times{10}^4$ higher than present day solar values. Our simulations show that this model can be use to constrain the wide parameter space of stellar systems. It also shows that an MHD approach can provide more information about the physical system over the commonly used potential field extrapolation.Comment: 13 pages, 7 figure