9,444 research outputs found

    Bringing the university to the community : an examination of Ball State University partnership with the city of Muncie

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    Universities are not only large job generators that contribute to the general economic health of the city, but they also have the capacity and resources to intervene to stabilize and revitalize the city’s neighbourhoods. Until relatively recently, most universities and the cities in which they exist went about their business without taking full stock of what each meant to the other. Our hometown of Muncie, Indiana might not exist today without the economic spinoffs from the Ball State University. Even though Ball State plays a large part in the Muncie community as a major employer, it has been a wide critique that the university involvement in the city development is poor. Many universities have local partnerships through which we can find new ways to apply our intellectual and financial resources toward the transformation of our hometown Muncie. This paper is an attempt to translate the lessons I learnt into action

    Siting Renewable Energy Facilities: A Spatial Analysis of Promises and Pitfalls

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    Recent efforts to site renewable energy projects have provoked as much, if not more, opposition than conventional energy projects. Because renewable energy resources are often located in sensitive and isolated environments, such as pristine mountain ranges or coastal waters, siting these facilities is especially difficult. Moreover, the viability of different renewable energy projects depends not only on complex economic and environmental factors, but also on the availability of supporting infrastructures, such as transmission lines. This paper examines the spatial relationships between four types of renewable energy resources – wind, solar, geothermal, and biomass – and an empirical measure of state-level transmission-line siting difficulty. Analyses explore the locations of renewable resource potential relative to areas of high siting difficulty, state electricity demand and imports, and states with renewable portfolio standards (RPSs). Major results reveal that state resource potential varies, and siting is significantly more difficult in states that import electricity and those with RPSs. These results suggest that states with the greatest incentives to develop renewable energy also face the most serious obstacles to siting new facilities.siting, renewable energy, transmission lines, wind, solar, geothermal, biomass, geographic information systems (GIS), renewable portfolio standards (RPS)

    Reductions of Galois representations for slopes in (1,2)(1,2)

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    We describe the semi-simplification of the mod pp reduction of certain crystalline two dimensional local Galois representations of slopes in the interval (1,2)(1,2) and all weights. The proof uses the mod pp Local Langlands Correspondence for GL2(Qp)GL_2(Q_p). We also give a complete description of the submodules generated by the second highest monomial in the mod pp symmetric power representations of GL2(Fp)GL_2(F_p).Comment: 41 page

    Statistical Significance of spectral lag transition in GRB 160625B

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    Recently Wei et al (arXiv:1612.09425) have found evidence for a transition from positive time lags to negative time lags in the spectral lag data of GRB 160625B. They have fit these observed lags to a sum of two components: an assumed functional form for intrinsic time lag due to astrophysical mechanisms and an energy-dependent speed of light due to quadratic and linear Loren tz invariance violation (LIV) models. Here, we examine the statistical significance of the evidence for a transition to nega tive time lags. Such a transition, even if present in GRB 160625B, cannot be due to an energy dependent speed of light as th is would contradict previous limits by some 3-4 orders of magnitude, and must therefore be of intrinsic astrophysical origin . We use three different model comparison techniques: a frequentist test and two information based criteria (AIC and BIC). From the frequentist model comparison test, we find that the evidence for transition in the spectral lag data is favored at 3.05σ3.05\sigma and 3.74σ3.74\sigma for the linear and quadratic models respectively. We find that Δ\DeltaAIC and Δ\DeltaBIC have values \gtrsim 10 for the spectral lag transition that was motivated as being due to quadratic Lorentz invariance vio lating model pointing to "decisive evidence". We note however that none of the three models (including the model of intr insic astrophysical emission) provide a good fit to the data.Comment: 6 pages, 1 figur

    Exploring High Dimensional Free Energy Landscapes: Temperature Accelerated Sliced Sampling

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    Biased sampling of collective variables is widely used to accelerate rare events in molecular simulations and to explore free energy surfaces. However, computational efficiency of these methods decreases with increasing number of collective variables, which severely limits the predictive power of the enhanced sampling approaches. Here we propose a method called Temperature Accelerated Sliced Sampling (TASS) that combines temperature accelerated molecular dynamics with umbrella sampling and metadynamics to sample the collective variable space in an efficient manner. The presented method can sample a large number of collective variables and is advantageous for controlled exploration of broad and unbound free energy basins. TASS is also shown to achieve quick free energy convergence and is practically usable with ab initio molecular dynamics techniques
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