mSpace meets EPrints: a Case Study in Creating Dynamic Digital Collections

In this case study we look at issues involved in (a) generating dynamic digital libraries that are on a particular topic but span heterogeneous collections at distinct sites, (b) supplementing the artefacts in that collection with additional information available either from databases at the artefact's home or from the Web at large, and (c) providing an interaction paradigm that will support effective exploration of this new resource. We describe how we used two available frameworks, mSpace and EPrints to support this kind of collection building. The result of the study is a set of recommendations to improve the connectivity of remote resources both to one another and to related Web resources, and that will also reduce problems like co-referencing in order to enable the creation of new collections on demand

Expendable bubble tiltmeter for geophysical monitoring

An unusually rugged highly sensitive and inexpensive bubble tiltmeter has been designed, tested, and built in quantity. These tiltmeters are presently used on two volcanoes and an Alaskan glacier, where they continuously monitor surface tilts of geological interest. This paper discusses the mechanical, thermal, and electric details of the meter, and illustrates its performance characteristics in both large ( > 10^(-4) radian) and small ( < 10^(-6) radian) tilt environments. The meter's ultimate sensitivity is better than 2 X 10^(-8) radians rms for short periods (hours), and its useful dynamic range is greater than 10^4. Included is a short description of field use of the instrument for volcano monitoring

Children’s Goal Profiles and Perceptions of the Motivational Climate: Interactive Association With Self-Determined Motivation and Affective Patterns in Physical Education

Developing an understanding of youngster’s motivation for physical education (PE) is becoming increasingly important. This study examined the interactive effects of children’s multiple goal profiles and perceptions of the motivational climate on indices of self-determined motivation and affect in 429 students (201 boys, 228 girls; M age = 11.2, SD = .39) in northwest England. MANOVA results revealed a significant (p \u3c .05) main effect for goal profiles and perceived motivational climate. Moreover, a significant interaction between goal profiles and perceived climate was found: Children with high mastery/high performance profiles had high levels of intrinsic motivation and identified regulation, regardless of the climate. In contrast, other profile groups (i.e., high mastery/low performance, low mastery/high performance, low mastery/low performance) were more likely to have high levels of intrinsic motivation and identified regulation from exposure to a perceived mastery climate. These results are discussed in terms of the contribution they appear to make to recent analyses of multiple goals

Looking for Pure Rotational H_2 Emission from Protoplanetary Disks

We report on a limited search for pure-rotational molecular hydrogen emission associated with young, pre-main-sequence stars. We looked for H_2 v=0 J = 3->1 and J = 4->2 emission in the mid-infrared using the Texas Echelon-Cross-Echelle Spectrograph (TEXES) at NASA's 3m Infrared Telescope Facility. The high spectral and spatial resolution of our observations lead to more stringent limits on narrow line emission close to the source than previously achieved. One star, AB Aur, shows a possible (2sigma) H_2 detection, but further observations are required to make a confident statement. Our non-detections suggest that a significant fraction, perhaps all, of previously reported H_2 emission towards these objects could be extended on scales of 5" or more.Comment: 14 pages including 2 figures. Accepted by ApJ Letter

Better Ways to Work: HVAC management, repair and maintenance in the mid-tier commercial office sector

This is the first piece of work from the Better Ways to Work project. It presents the results of the largest national survey of facilities managers, HVAC contractors and associated design and systems specialists undertaken to date

Nonlinear Scattering of a Bose-Einstein Condensate on a Rectangular Barrier

We consider the nonlinear scattering and transmission of an atom laser, or Bose-Einstein condensate (BEC) on a finite rectangular potential barrier. The nonlinearity inherent in this problem leads to several new physical features beyond the well-known picture from single-particle quantum mechanics. We find numerical evidence for a denumerably infinite string of bifurcations in the transmission resonances as a function of nonlinearity and chemical potential, when the potential barrier is wide compared to the wavelength of oscillations in the condensate. Near the bifurcations, we observe extended regions of near-perfect resonance, in which the barrier is effectively invisible to the BEC. Unlike in the linear case, it is mainly the barrier width, not the height, that controls the transmission behavior. We show that the potential barrier can be used to create and localize a dark soliton or dark soliton train from a phonon-like standing wave.Comment: 15 pages, 15 figures, new version includes clarification of definition of transmission coefficient in general nonlinear vs. linear cas

Mapping decision-making and opportunities for improving energy efficiency across the mid-tier HVAC maintenance lifecycle

This report looks at the HVAC maintenance lifecycle to outline the decision-making processes that characterise the procurement of HVAC management and maintenance services in mid-tier commercial buildings. It maps a range of policy options against key issues identified across the HVAC maintenance lifecycle