Linking Locations: Storytelling with Pervasive Technology

With online location-aware smart phones in more and more pockets, storytelling is moving to the streets. Simultaneously, an increasing abundance of Linked Data is being made available, complete with geographical information. In this paper, we review the state of the art and suggest approaches to, and issues with, a storytelling system that combines these two technologies

The relationship between religious orientation, personality, and purpose in life among an older Methodist sample

The construct of purpose in life is a key notion discussed both by psychologists and by theologians. There are good theoretical reasons for linking the two constructs and arguing that religiosity could enhance the sense of purpose in life. The empirical evidence for the relationship is, however, not unambiguous. A major difficulty with earlier research concerns the problematic nature of defining both purpose in life and religiosity. The present study attempts to clarify the problem by employing new recently developed measures of both constructs. The Purpose in Life Scale (PILS) developed by Robbins and Francis (2000) provides a clear and unambiguous measure. The New Indices of Religious Orientation (NIRO) developed by Francis (2007) re-operationalise the three constructs of intrinsic, extrinsic and quest religiosity as three different ways of being religious. Both instruments were completed together with the Short-form Eysenck Personality Questionnaire Revised (EPQR-S) by 407 older Methodists in England. The data demonstrate that, after controlling for individual differences in personality, intrinsic religiosity is associated with a better sense of purpose in life, and both quest religiosity and extrinsic religiosity are unrelated to a sense of purpose in life

Space Shuttle Main Engine (SSME) Pogo testing and results

To effectively assess the Pogo stability of the space shuttle vehicle, it was necessary to characterize the structural, propellant, and propulsion dynamics subsystems. Extensive analyses and comprehensive testing programs were established early in the project as an implementation of management philosophy of Pogo prevention for space shuttle. The role of the space shuttle main engine (SSMF) in the Pogo prevention plans, the results obtained from engine ground testing with analysis, and measured data from STS-1 flight are discussed

Strategic Institutional Choice: Voters, States, and Congressional Term Limits

This paper demonstrates that states’ decisions on limiting congressional terms are empirically determined by measures of relative political influence in Congress. States’ choices on term limits are quantified as a multiple-categorical variable that reflects variation in the stringency of term limits laws passed. Using 1992 data on the American states, the model controls for unobserved heterogeneity that is introduced by some voters having access to institutions of direct democracy. At 2002 state-level values for congressional tenure and federal spending, the model predicts approximately eight to ten additional states would choose to limit terms of their own congressional delegations, but are prohibited from doing so under a Supreme Court ruling. The results hold implications for institutional federalism and the potential passage of similar political institutions across the states.term limits; political institutions; federalism; political economy

Bubbles emerging from a submerged granular bed

This paper explores the phenomena associated with the emergence of gas bubbles from a submerged granular bed. While there are many natural and industrial applications, we focus on the particular circumstances and consequences associated with the emergence of methane bubbles from the beds of lakes and reservoirs since there are significant implications for the dynamics of lakes and reservoirs and for global warming. This paper describes an experimental study of the processes of bubble emergence from a granular bed. Two distinct emergence modes are identified, mode 1 being simply the percolation of small bubbles through the interstices of the bed, while mode 2 involves the cumulative growth of a larger bubble until its buoyancy overcomes the surface tension effects. We demonstrate the conditions dividing the two modes (primarily the grain size) and show that this accords with simple analytical evaluations. These observations are consistent with previous studies of the dynamics of bubbles within porous beds. The two emergence modes also induce quite different particle fluidization levels. The latter are measured and correlated with a diffusion model similar to that originally employed in river sedimentation models by Vanoni and others. Both the particle diffusivity and the particle flux at the surface of the granular bed are measured and compared with a simple analytical model. These mixing processes can be consider applicable not only to the grains themselves, but also to the nutrients and/or contaminants within the bed. In this respect they are shown to be much more powerful than other mixing processes (such as the turbulence in the benthic boundary layer) and could, therefore, play a dominant role in the dynamics of lakes and reservoirs

Influence of an aperture on the performance of a two-degree-of-freedom iron-cored spherical permanent-magnet actuator

Abstract—This paper describes a computational and experimental study of a two-degree-of-freedom spherical permanent-magnet actuator equipped with an iron stator. In particular, it considers the effect of introducing an aperture in the stator core to facilitate access to the armature. The resultant magnetic field distribution in the region occupied by the stator windings, the net unbalanced radial force, and the resulting reluctance torque are determined by three-dimensional magnetostatic finite-element analysis. The predicted reluctance torque is validated experimentally, and its implications on actuator performance are described

A Markov Chain Monte Carlo Algorithm for analysis of low signal-to-noise CMB data

We present a new Monte Carlo Markov Chain algorithm for CMB analysis in the low signal-to-noise regime. This method builds on and complements the previously described CMB Gibbs sampler, and effectively solves the low signal-to-noise inefficiency problem of the direct Gibbs sampler. The new algorithm is a simple Metropolis-Hastings sampler with a general proposal rule for the power spectrum, C_l, followed by a particular deterministic rescaling operation of the sky signal. The acceptance probability for this joint move depends on the sky map only through the difference of chi-squared between the original and proposed sky sample, which is close to unity in the low signal-to-noise regime. The algorithm is completed by alternating this move with a standard Gibbs move. Together, these two proposals constitute a computationally efficient algorithm for mapping out the full joint CMB posterior, both in the high and low signal-to-noise regimes.Comment: Submitted to Ap

Formation of Low Threshold Voltage Microlasers

Vertical cavity surface emitting lasers (VCSELs) with threshold voltages of 1.7V have been fabricated. The resistance-area product in these new vertical cavity lasers is comparable to that of edge-emitting lasers, and threshold currents as low as 3 mA have been measured. Molecular beam epitaxy was used to grow n-type mirrors, a quantum well active region, and a heavily Be-doped p-contact. After contact definition and alloying, passive high-reflectivity mirrors were deposited by reactive sputter deposition of SiO2/Si3N4 to complete the laser cavity

The Ripples of Vanport: Navigating Competing Narratives

This thesis analyzes representations of the history of Vanport, Oregon, through the lens of narrative rhetoric. It examines two mainstream texts, one academic and one written for the general public, to establish a foundation for Vanport\u27s dominant representation, before exploring how local nonprofit Vanport Mosaic works to revise that history through community voices. Histories of Vanport have largely focused on its success as a public housing project before the 1948 flood that destroyed the city. In these accounts, the experiences of the residents themselves, including the flood’s devastating effects on their community, were overlooked. This neglect inspired the oral history project of Vanport Mosaic, which uses digital media to provide both an alternative historical account of life in Vanport and to disrupt the normative power dynamics of who creates narratives in a way previously impossible. Taken together, these representations demonstrate the subtle erasure of community members’ voices in mainstream narratives, as well as the powerful potential of grassroots digital storytelling to complicate those accounts. This case study of Vanport documents contemporary efforts to revise dominant histories and enrich local communities, thereby contributing to future research and advocacy work