The most challenging algorithmical task for markerless Augmented Reality applications is the robust estimation of the camera pose. With a given 3D model of a scene the camera pose can be estimated via model-based camera tracking without the need to manipulate the scene with fiducial markers. Up to now, the bottleneck of model-based camera tracking is the availability of such a 3D model. Recentl...

Mass spectrometers such as SELDI-TOF (surface enhanced laser desorption/ionization time-of-flight) and MALDI-TOF (matrix assisted laser desorption and ionization time-of-flight) measure the relative abundance of different protein ions or protein fragments (peptides) indexed by the mass-to-charge ratio (m/z). A special characteristic of the MS spectra is its variabilities in both m/z values and ...

Background: In the current study, we investigated that how sagittal femoral bowing can affect the sagittal alignment ofthe femoral component in total knee arthroplasty (TKA).Methods: There were 25 patients underwent TKA. Long leg radiography in lateral view was performed. The sagittalfemoral bowing (SFB) and component alignment in relation to the sagittal mechanical axis and distal anterior cor...

In this paper, an approximate solution of sensitivity matrix of required velocity with final velocity constraint is derived using a piecewise linear gravity assumption. The total flight time is also fixed for the problem. Simulation results show the accuracy of the method. Increasing the midway points for linearization, increases the accuracy of the solution, which this, in turn, depends on the...

Aspheric optical surfaces are becoming common in optical design. Fabrication efforts have improved, costs have reduced, and aspheres allow a designer to control more degrees of freedom using fewer surfaces. However, testing and alignment of aspheric surfaces is considerably more difficult than that of spherical surfaces. Testing requires expensive null lenses, and alignment requires numerous da...

different approaches are presented regarding how to react to the changing world. all these approaches are me meaningful if cover the alignment principle in the organization as a fundamental and more important principle. surveys and research on the successful organizations are indicative of considering alignment as a determinant axis in the organization. this article is the result of a research ...

With the growing adoption of automatic systems for aligning the geometry of large multi-projector displays in venues such as flight or ship bridge simulators, it has become possible for even the most complicated visual systems to be realigned regularly to maintain seamless geometric alignment. Despite this ability, for the most part, these alignment systems still require that the system be take...

This paper deals with the experimental results of a xenon flash-lamp pumped passively Q-switched Nd:YAG laser using Cr4+:YAG saturable absorber. The need of a laser cavity to be integrated into a time-of-flight laser range finder is of great interest as an experimental investigation of several laser resonators. Two types of laser resonator, with different lengths, have been studied: the flat-fl...

Nowadays, in-flight comfort has become an essential characteristic to survive in domestic airline businesses. Air hostesses’ quality of service and response time to customer demand plays a vital role in enhancing quality of the flight experience and passenger satisfaction. However, additional requirements on air hostess expose them to fatigue which could eventually result in job dissatisfac...

introduction: acinetobacter baumannii is associated with hospital-acquired infections. outer membrane protein a of a.baumannii (abompa) is a well-characterized virulence factor which has important roles in pathogenesis of this bacterium. methods: based on our pcr-sequencing of ompa gene in the clinical isolates, abompa protein can be categorized into two types, named here type-1 and type-2. we ...