It is known that every class-regular symmetric μ,m -net is tactical. Also it is known that all μ,m nets with m 2 or μ 1 are tactical. In the work of Al-Kenani and Mavron 2003 , it is proved that every symmetric net with m 3 is tactical if and only if it is class regular. In this paper, we construct 2, 4 -net and show that it is class regular and therefore tactical. New necessary and sufficient ...

Extremely anisotropic metal-dielectric multilayer metamaterials are designed to have the effective permittivity tensor of a transverse component (parallel to the interfaces of the multilayer) with zero real part and a longitudinal component (normal to the interfaces of the multilayer) with ultra-large imaginary part at the same wavelength, including the optical nonlocality analysis based on the...

Biodegradable polymers can be applied to a variety of implants for controlled and local drug delivery. The aim of this study is to develop a biodegradable and nanoporous polymeric platform for a wide spectrum of drug-eluting implants with special focus on stent-coating applications. It was synthesized by poly(DL-lactide-co-glycolide) (PLGA 65:35, PLGA 75:25) and polycaprolactone (PCL) in a mult...

Various extensions of public announcement logic have been proposed with quantification over announcements. The best-known extension is called arbitrary public announcement logic, APAL. It contains a primitive language construct ✷φ intuitively expressing that “after every public announcement of a formula, formula φ is true.” The logic APAL is undecidable and it has an infinitary axiomatization. ...

A recently developed active electronic personal dosemeter (AEPD) was utilised in order to measure the levels and the structure of occupational exposure to scattered X-ray radiation of medical staff who performed percutaneous revascularisation therapy that involves interventional radiology (IR) on the pelvis and upper leg arteries. The AEPDs, placed on the operators' and assistants' chests, that...

I study dynamic games where players may be unaware of some fundamentals of the game itself, such as actions or players, and such unawareness may be lifted by other players’ actions during the play. Based on Li (2006a, 2006b), I propose a framework to deal with such games using standard tools of game theory. I construct examples to show that unawareness is distinctly different from assigning zer...

Humble leadership behavior consists of acknowledging personal faults, mistakes and limits; spotlighting their followers’ contributions and strengths; modeling teachability. Previous studies have suggested that humble leadership behavior leads to a number of positive outcomes for organizations, such as high levels of learning goal orientation, performance and engagement, yet almost nothing has b...

Ultra thin multilayer capsules are attractive and stable systems capable of delivering the bioactives. Ultra thin multilayer capsules consist of polyelectrolytic materials that are formed in the presence of a template. This is achieved through layer-by-layer adsorption of oppositely charged macromolecules on to colloidal particles. Upon extraction, the resulting cavities retain affi nity for th...

We propose here a deep multilayer grating with adjustable bandpass as an alternative dispersing element to PET crystal in WDXRF spectroscopy. When making a multilayer grating, we remove part of the reflecting planes of a multilayer, allowing radiation to penetrate deeper. Since the resolution, or the bandpass, is reciprocally proportional to the penetration depth, we improve the resolution and ...

There has been considerable interest in polyelectrolyte multilayer nanofilms, which have a variety of applications ranging from optical and electrochemical materials to biomedical devices. Polyelectrolyte multilayer nanofilms are constructed from aqueous solutions using electrostatic layer-by-layer self-assembly of oppositely-charged polyelectrolytes on a solid substrate. Multifunctional polyel...