Comparison of Gaussian process modeling software

Gaussian process fitting, or kriging, is often used to create a model from a set of data. Many available software packages do this, but we show that very different results can be obtained from different packages even when using the same data and model. We describe the parameterization, features, and optimization used by eight different fitting packages that run on four different platforms. We then compare these eight packages using various data functions and data sets, revealing that there are stark differences between the packages. In addition to comparing the prediction accuracy, the predictive variance--which is important for evaluating precision of predictions and is often used in stopping criteria--is also evaluated

Absence and Disability Management Practices for an Aging Workforce

The goal of Disability and Absence Management programming is to limit absence, control costs, and retain workers to maintain a productive workforce. This can include the development of supportive policies (e.g. flexible work options), manager and employee education, supportive benefit programs, return to work programs, among others. Increasingly, older workers have become a group of interest among Absence and Disability Management professionals, in part because many baby boomers are forgoing retirement and working longer. Projections suggest that by 2020 those 55 and over could account for 25% of workers. This shift is especially important given that disability prevalence increases with age – as the workforce ages, organizations will increasingly need to ensure their programming supports older workers. During the fall and winter of 2012-13, Cornell University’s Employment and Disability Institute and the Disability Management Employer Coalition (DMEC) collaborated on a survey and key informant interviews with DMEC members and conference attendees to learn more about what organizations are doing to respond to and prepare for an aging workforce

Direct combination: a new user interaction principle for mobile and ubiquitous HCI

Direct Combination (DC) is a recently introduced user interaction principle. The principle (previously applied to desktop computing) can greatly reduce the degree of search, time, and attention required to operate user interfaces. We argue that Direct Combination applies particularly aptly to mobile computing devices, given appropriate interaction techniques, examples of which are presented here. The reduction in search afforded to users can be applied to address several issues in mobile and ubiquitous user interaction including: limited feedback bandwidth; minimal attention situations; and the need for ad-hoc spontaneous interoperation and dynamic reconfiguration of multiple devices. When Direct Combination is extended and adapted to fit the demands of mobile and ubiquitous HCI, we refer to it as Ambient Combination (AC) . Direct Combination allows the user to exploit objects in the environment to narrow down the range of interactions that need be considered (by system and user). When the DC technique of pairwise or n-fold combination is applicable, it can greatly lessen the demands on users for memorisation and interface navigation. Direct Combination also appears to offers a new way of applying context-aware information. In this paper, we present Direct Combination as applied ambiently through a series of interaction scenarios, using an implemented prototype system

Towards the exploration of Gender awareness in Human-centred design

The primary aim of the human-centred design (HCD) approach is to identify the user needs. However, we argue that there is a lack of understanding of, and even awareness of, gender in HCD. This approach sees gender as static and stable regarding male or female such that the implication of principles in products, systems or services appeals to one gender or another linking gender differences, and stereotypes. To illustrate this, the investigation was conducted in the context of fostering sun protection behaviour in young men. Participatory design sessions were deployed to investigate the role of gender in the HCD and how it can be used to foster sun protection behaviour. We have concluded with the development of a novel gender aware HCD approach which opens avenues for design research and practice for increasing emphasis on the influence of the designer’s own gender and their gendered perceptions in their designs

A late-time transition in the cosmic dark energy?

We study constraints from the latest CMB, large scale structure (2dF, Abell/ACO, PSCz) and SN1a data on dark energy models with a sharp transition in their equation of state, w(z). Such a transition is motivated by models like vacuum metamorphosis where non-perturbative quantum effects are important at late times. We allow the transition to occur at a specific redshift, z_t, to a final negative pressure -1 < w_f < -1/3. We find that the CMB and supernovae data, in particular, prefer a late-time transition due to the associated delay in cosmic acceleration. The best fits (with 1 sigma errors) to all the data are z_t = 2.0^{+2.2}_{-0.76}, \Omega_Q = 0.73^{+0.02}_{-0.04} and w_f = -1^{+0.2}.Comment: 6 Pages, 5 colour figures, MNRAS styl

Spurious phase in a model for traffic on a bridge

We present high-precision Monte Carlo data for the phase diagram of a two-species driven diffusive system, reminiscent of traffic across a narrow bridge. Earlier studies reported two phases with broken symmetry; the existence of one of these has been the subject of some debate. We show that the disputed phase disappears for sufficiently large systems and/or sufficiently low bulk mobility.Comment: 8 pages, 3 figures, JPA styl

Preservice Teacher Preparation in International Contexts: A Case-Study Examination of the International Student Teacher Programs

This article examines the teacher preparation experiences of preservice teachers in six international contexts: China, Fiji, Kiribati, Mexico, Samoa, and Tonga. More specifically, it looks at the value-added components in an international teacher education program, with an emphasis on effective teaching and employability. Theoretically the study is based on Straus and Corbin’s (1998a) substantive grounded theory and Patton’s (1997) Theory of Action Framework. Verbal and non-verbal forms of feedback were identified as essential aspects of the international preservice training experience. Cultural diversity, teaching English as a second language, collaboration, and exposure to a different educational system were identified among several components as advantages to individuals who conduct their preservice teacher training in international settings.</jats:p

Narrowing the Innovation Gap: Factors Influencing Outcomes of Industry-University Collaborations

Universities have played a continued role in facilitating and enhancing the innovative potential of U.S. companies. Key tothese relationships is the transfer of knowledge both from university to industry as well as from industry to university. But,few researchers have explored how different relationships necessitate specific cultural orientations, absorptive capacityabilities, and management tasks. As industry and universities engage in relationships designed to accelerate innovation it iscritical to understand the factors that impact the outcomes of these relationships. Based on literature related to openinnovation and industry-university relationships, an integrative explanatory theoretical framework is proposed for identifyingkey factors shown to play a role in the success of industry-university relationships. Applying data from a study of knowledgeexchange between university and industry partners, the applicability of the framework in identifying key factors related tosuccessful outcomes is illustrated

Capturing an Evolving Nebular Environment: A Petrographic and Geochemical Study of a Type A, B & C CAI

Calcium, Aluminum-rich Inclusions (CAIs) were the first formed solids in our Solar System, with mineral assemblages reflecting the first phases predicted to condense out of a hot nebular gas of Solar composition. Geochemical, textural and crystallographic information in CAIs can be used to constrain the temperature, pressure, and composition (e.g., oxygen fugacity) of the gaseous reservoir(s) from which they formed, as well as any secondary (nebular and parent body) processes they underwent. Coordinated geochemical and textural analyses provide information on nebular conditions (i.e., astrophysical environments and dynamics of nebular gas reservoirs) in which these CAIs formed. In order to better understand the evolution of nebular reservoirs at the time of CAI formation, we analyzed a Type A, B and C CAI using Electron Probe Micro-Analyzer (EPMA) and Electron BackScatter Diffraction (EBSD) at NASA Johnson Space Center (JSC)

Aircraft and avionic related research required to develop an effective high-speed runway exit system

Research was conducted to increase airport capacity by studying the feasibility of the longitudinal separation between aircraft sequences on final approach. The multidisciplinary factors which include the utility of high speed exits for efficient runway operations were described along with recommendations and highlights of these studies