A novel method for the identification of differential item functioning (DIF) by means of recursive partitioning techniques is proposed. We assume an extension of the Rasch model that allows for DIF being induced by an arbitrary number of covariates for each item. Recursive partitioning on the item level results in one tree for each item and leads to simultaneous selection of items and variables...

hr this paper, H'e describe an interface agellt, nvo different route planning agents and a pilot study lVI!ich examined whether these agents could support a team planning task. The MokSAF interface ageut li11ks an Artificial brtel/igeuce (AI) route-planning agent to a Geographic Information S."stem (G/Si. The user .spec{fies a start and an end poim and the route-plwmillg agent finds a minimum c...

We study an extended Lipkin-Meshkov-Glick model that permits a transition to a deformed phase with a broken continuous symmetry. Unlike simpler models, one sees a persistent zero-frequency Goldstone mode past the transition point into the deformed phase. We found that the RPA formula for the correlation energy provides a useful correction to the Hartree-Fock energy when the number of particle N...

The correlation energy in the direct random phase approximation (dRPA) can be written, among other possibilities, either in terms of the interaction strength averaged correlation density matrix, or in terms of the coupled cluster doubles amplitudes obtained in the direct ring approximation (drCCD). Although the corresponding dRPA correlation density matrix on the one hand, and the drCCD amplitu...

We studied effects of dark adaptation on spatial and temporal tuning for motion coherence detection. We compared tuning for step size and delay for moving random pixel arrays (RPAs) at two adaptation levels, one light adapted (50 cd/m(2)) and the other relatively dark adapted (0.05 cd/m(2)). To study coherence detection rather than contrast detection, RPAs were scaled for equal contrast detecti...

Objective. To evaluate the prevalence and associated factors of burnout among nurses in a Nigerian general hospital. Methods. A total sampling method was utilized. Measurements. Burnout was evaluated using the Maslach Burnout Inventory; GHQ-12 was used to determine the presence of psychiatric morbidity. Results. A high level of burnout was identified in 39.1% of the respondents in the area of e...

Pursuant to the National Quality Forum’s (NQF) Consensus Development Process, RPA and the organizations listed below formally appeal the Consensus Standards Approval Committee’s (CSAC) decision on Measure 2496, the Standardized Readmission Ratio for Dialysis Facilities. We are highly concerned about the apparent overriding of both the Standing Committee and NQF member vote in regard to said mea...

We describe an adaptive isosurface visualization scheme designed for perspective rendering, taking into account the center of interest and other viewer-specified parameters. To hierarchically decompose a given data domain into a multiresolution data structure, we implement and compare two spatial subdivision data structures: an octree and a recursively defined tetrahedral mesh based on longest-...

where E PT is the contribution to the total binding energy in second order perturbation theory. A perturbative expansion of the RPA equations shows that (i) the sum in Eq. (1) must also include charge exchange modes and (ii) E PT is double counted and must be subtracted [3]. This leads to an improved description of the binding energies of most closed shell nuclei, up to Pb, as shown in Fig. 1 [...

The Eating Disorder Healthy Eating tool was designed for use when delivering education to eating disorder patients on the components of a healthy diet. In previous research presented at the ANZAED conference in 2011, it was shown that 19 of 20 participants (95%) attending Derwent House, the RPA eating disorder day program endorsed the tool as being more effective than a general tool for recover...