A Framework For Transitioning Enterprise Web Services From XML-RPC to REST

Web Services are defined by the W3C as “a software system designed to support interoperable machine to machine interaction over a network . There are however, several alternatives as to how Web Services can be implemented: WS-* and Plain Old XML (POX) are popular approaches that markup their RPC (Remote Procedure Call) based payloads with eXtensible Markup Language (XML). Both approaches can use HyperText Transfer Protocol (HTTP) for transferring their messages. Representational State Transfer (REST) is an alternative approach that is gaining in popularity. This research-in-progress paper presents the issues of XML-RPC based Web Services (XML verbosity and message opacity) and why a RESTful approach solves these issues. We present results which show the improved performance. We present a framework that outlines a translation from XML-RPC to RESTful format for “read” style request messages. This framework is ideally suited to enable enterprises to gradually transition from XML-RPC to RESTful Web Services

Development of a Widely Tunable All Fiber Laser Source for Raman Spectroscopy/Microscopy

Raman microscopy is an important tool for a variety of applications, but the current laser sources used for this technology make the availability of these systems uncommon. Current laser sources are simply too complicated and expensive, taking up the footprint of an entire optics table and costing up to $500,000. There is a strong need for a simpler laser architecture which can still meet the resolution and tunability requirements of current systems. In this thesis, I describe the progress made toward developing such a laser source in the Ultrafast Fiber Lasers and Non-Linear Optics group and the College of Optical Sciences. We demonstrate promising performance results and identify areas of improvement that will soon enable our group to have a high performing Raman microscope

A critical outlook at augmented reality and its adoption in education

Despite a significant volume of empirical research suggesting that augmented reality has a positive impact on student learning outcomes, it has not been widely adopted within education. This review critically analyses the literature to determine why this is the case. Our review methodology was based on the PRISMA strategy. A total of 169 papers were identified for use in this study and this group of papers was evaluated using content analysis. Specifically we analysed the research goals, motivation and the extent of the application of co–design in the research papers. We found that the research in this area is primarily student–centred, and a minority of papers apply co–design as a technique. This is significant because it is well understood that student–centred outcomes have the least effect on technology adoption within education. Based on these findings we make a series of recommendations including a shift away from research focused solely on learning outcomes and towards research which also considers how augmented reality integrates into the teaching environment

Temporal discrimination: Mechanisms and relevance to adult-onset dystonia

Temporal discrimination is the ability to determine that two sequential sensory stimuli are separated in time. For any individual, the temporal discrimination threshold (TDT) is the minimum interval at which paired sequential stimuli are perceived as being asynchronous; this can be assessed, with high test-retest and inter-rater reliability, using a simple psychophysical test. Temporal discrimination is disordered in a number of basal ganglia diseases including adult-onset dystonia, of which the two most common phenotypes are cervical dystonia and blepharospasm. The causes of adult-onset focal dystonia are unknown; genetic, epigenetic, and environmental factors are relevant. Abnormal TDTs in adult-onset dystonia are associated with structural and neurophysiological changes considered to reflect defective inhibitory interneuronal processing within a network which includes the superior colliculus, basal ganglia, and primary somatosensory cortex. It is hypothesized that abnormal temporal discrimination is a mediational endophenotype and, when present in unaffected relatives of patients with adult-onset dystonia, indicates non-manifesting gene carriage. Using the mediational endophenotype concept, etiological factors in adult-onset dystonia may be examined including (i) the role of environmental exposures in disease penetrance and expression; (ii) sexual dimorphism in sex ratios at age of onset; (iii) the pathogenesis of non-motor symptoms of adult-onset dystonia; and (iv) subcortical mechanisms in disease pathogenesis

Exergy Efficiency of Interplanetary Transfer Vehicles

In order to optimize systems, systems engineers require some sort of measure with which to compare vastly different system components. One such measure is system exergy, or the usable system work. Exergy balance analysis models provide a comparison of different system configurations, allowing systems engineers to compare different systems configuration options. This paper presents the exergy efficiency of several Mars transportation system configurations, using data on the interplanetary trajectory, engine performance, and vehicle mass. The importance of the starting and final parking orbits is addressed in the analysis, as well as intermediate hyperbolic escape and entry orbits within Earth and Mars' spheres of influence (SOIs). Propulsion systems analyzed include low-enriched uranium (LEU) nuclear thermal propulsion (NTP), high-enriched uranium (HEU) NTP, LEU methane (CH4) NTP, and liquid oxygen (LOX)/liquid hydrogen (LH2) chemical propulsion

Sticky central limit theorems on open books

Given a probability distribution on an open book (a metric space obtained by gluing a disjoint union of copies of a half-space along their boundary hyperplanes), we define a precise concept of when the Fr\'{e}chet mean (barycenter) is sticky. This nonclassical phenomenon is quantified by a law of large numbers (LLN) stating that the empirical mean eventually almost surely lies on the (codimension $1$ and hence measure $0$) spine that is the glued hyperplane, and a central limit theorem (CLT) stating that the limiting distribution is Gaussian and supported on the spine. We also state versions of the LLN and CLT for the cases where the mean is nonsticky (i.e., not lying on the spine) and partly sticky (i.e., is, on the spine but not sticky).Comment: Published in at http://dx.doi.org/10.1214/12-AAP899 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org

Learning to be inflexible: Enhanced attentional biases in Parkinson\u27s disease

Impaired attentional flexibility is considered to be one of the core cognitive deficits in Parkinson\u27s disease (PD). However, the mechanisms that underlie this impairment are contested. Progress in resolving this dispute has also been hindered by the fact that cognitive deficits in PD are heterogeneous; therefore, it is unclear whether attentional impairments are only present in a subgroup of patients. Here, we demonstrate that what differentiates PD patients from age-matched controls is an inability to shift attention away from previously relevant information (perseveration) and an inability to shift attention towards previously irrelevant information (learned irrelevance). In contrast, there was no evidence that PD patients, compared to controls, were impaired in being able to appropriately attend to, or ignore, novel information. Furthermore, when patients were stratified according to their level of executive impairment, the executively impaired group showed a selective deficit in set formation compared to the unimpaired group, a behavioural pattern reminiscent of cortical dopamine depletion. Cumulatively, these results suggest that cognitive inflexibility in PD relates to a specific form of attentional dysfunction, in which learned attentional biases cannot be overcome

Making sense of methods – a conversation about qualitative research in library and information studies

Currently there is an embarrassment of riches with regards to the range of research methods appropriate for library and information studies [LIS]; including qualitative and quantitative methods as well as ‘mixed methods’. All of this provides a rich body of resources for researchers, but this abundance also has a downside since it can also result in confusion and perplexity amongst researchers as they plan their investigative studies. Contributions such as this special issue are welcome opportunities to resolve and ameliorate this situation, and so in our contribution we seek to address some of these issues in the form of an interchange between two researchers with interests that include, but are not limited to, research in LIS. Between us we have a wide range of publications, as well as 80 plus PhD completions, many of which fall under the heading of LIS – broadly conceived. In particular we would claim specific expertise in Grounded Theory [Bryant] and Action Research [Abbott-Halpin]. Our aim is to seek clarification of some of the key methodological issues; although we realize that this is unlikely to provide any definitive outcome, it may assist those seeking guidance on these matters