The control of spatial propagation properties of narrow light beams such as divergence, focusing or imaging are main objectives in optics and photonics. In this letter, we propose and demonstrate experimentally a flat focusing mirror, based on an especially designed dielectric structure without any optical axis. More generally, it also enables imaging any light pattern in reflection. The flat f...

Focusing waves inside a medium has applications in various science and engineering fields, e.g., in medical imaging, ultrasound therapy, noninvasive surgery, nondestructive evaluation, and geophysics in areas such as imaging and focusing microseismic events. The goal in focusing is to concentrate the wave energy at a specific time and location inside a medium. Various techniques have been devis...

Model-based diagnosis is based on first-principles reasoning using the behavioral specifications of the primitive components of a device. Unless the computational architecture of the model-based reasoning engine is carefully designed, combinatorial explosion renders the approach useless for devices consisting of more than a handful of components. This paper analyzes the diverse origins of this ...

The external granular layer (EGL) of the cerebellum thickens, thins and disappears in its developmental process. We examined the thickness of the EGL, both intralobule differences and interlobule differences, in the whole midline sections of mouse cerebella for the entire postnatal period up to disappearance. The thinnest site in each lobule was located at the outer apex throughout the observat...

We present a semantic framework which integrates a compositional version of Discourse Representation Theory, Van der Sandt's presupposition theory, and a treatment of focus in the style of Rooth's Alternative Semantics. We will discuss the semantics of focusing particles like too and only within this framework. The function of these particles is maintaining coherence in discourse or dialogue. T...

Many problems having enormous search spaces can nevertheless be solved because only a very small fraction of that space need be traversed to find the needed solution(s). The ability of assumption-based truth maintenance systems to rapidly switch and compare contexts is an advantage for such problems, but existing ATMS techniques generally perform badly on them. This paper describes a new strate...

~ scinating feature of cell locomotion is that net actin polymerization and depolymerization occur simultaneously at different locations in the cytoplasm, while the total concentration of polymerized actin remains roughly constant. Net polymerization occurs primarily at the cell front and net depolymerization occurs, depending on cell type, throughout or at the rear of the lamella (Wang, 1985; ...

Enough scientific evidences exist for the recommendation of the abolition of the used episiotomia in a liberal way. With objective of identifying the vision of a group of post-partum women in relation to the episiotomy it was done a study of qualitative approach, with the participation of 20 women, in the postpartumn period. It was used for data collection a semi-structured tool applied from Ap...

The focusing of the vacuum modes of a quantized field by a parabolic mirror is investigated. We use a geometric optics approximation to calculate the energy density and mean squared field averages for scalar and electromagnetic fields near the focus. We find that these quantities grow as an inverse power of the distance to the focus. There is an attractive Casimir-Polder force on an atom which ...

As in other Biotechnological fields, the microbial production of recombinant proteins and other biomolecules can be approached from multiple angles through the help of diverse technologies of increasing complexity. To better reach all the specialized niches in bioproduction, Microbial Cell Factories is now inviting authors to prepare concise Reviews (eventually miniReviews), covering relevant a...