Immersive virtual environments (VEs) provide participants with computer-generated environments filled with virtual objects to assist in learning, training, and practicing dangerous and/or expensive tasks. But does having every object being virtual inhibit the interactivity and level of immersion? If participants spend most of their time and cognitive load on learning and adapting to interacting...

The cartographic design of computer-generated perspective views with cartographic content – so-called 3D maps – follows mostly the preferences of map authors. It is affected by a large number of input variables. Here, all steps of the design process have to be considered (concept, modeling, symbolization, visualization). For classic maps, cartographic design principles were established many dec...

DNA copy number is the number of replicates of a contiguous segment of DNA on the genome. Copy number alteration (CNA) is a genetic abnormality in which the number of these segments differs from the normal copy number, which is two for human chromosomal DNA. The association of CNA with cancer has led to a proliferation of research into algorithmic methods for detecting these regions of genetic ...

We report a simulation platform for a lightfield camera. Our methods may be applied to develop and refine future lightfield acquisition systems. Furthermore, the rendering pipeline of PBRT has been augmented to include our camera simulator, permitting the generation of refocus-able computer-generated artwork. We demonstrate our simulation platform on various imaging scenarios that may prove cha...

It has been more than 36 years since Lohmann and Paris first described computer generated holograms (CGHs) [1] and CGHs have been used to test aspheric optical elements for more than 35 years [2]. Computer generated holograms are now widely used in the testing of aspheric optical elements and it is expected that their use in aspheric testing will greatly increase the next few years as the super...

We present here a method for generating second-harmonic beams with tailored beam profiles using nonlinear metasurfaces based on split ring resonators. By manipulating both the phase and the amplitude of the quadratic nonlinear coefficient locally, at the single inclusion level, the emitted secondharmonic wavefront is perfectly controlled. These concepts are demonstrated experimentally by the fa...

We present novel methods to enhance Computer Generated Holography (CGH) by introducing a complex-valued wave-based occlusion handling method. This offers a very intuitive and efficient interface to introduce optical elements featuring physically-based light interaction exhibiting depth-of-field, diffraction, and glare effects. Furthermore, an efficient and flexible evaluation of lit objects on ...

This paper provides the first experimental test of Edward Lazear’s (1979) model of deferred compensation. We examine the relationship between firms’ wage offers and workers’ effort supply in a multi-period environment. If firms can ex ante commit to a wage schedule with deferred compensation, workers should respond by supplying sufficient effort to avoid dismissal. We contrast this full-commitm...

Dean and Bailes (2010) provide a tutorial on the use of time-series analysis in research on music perception and a study of the influence of acoustic factors on real-time perception of music. They illustrate their approach with a detailed case study of an electroacoustic composition by Trevor Wishart. In this commentary, I discuss four aspects of Dean and Bailes’ presentation: first, the import...

This paper presents a cursive Arabic text recognition system. The system decomposes the document image into text line images and extracts a set of simple statistical features from a one-pixel width window which is sliding a cross that text line. It then injects the resulting feature vectors to Hidden Markov Models. The proposed system is applied to a data corpus which includes Arabic text of mo...