The phenomenon of extraordinary acoustic transmission through a solid barrier with an embedded Helmholtz resonator (HR) is demonstrated.The Helmholtz resonator consists of an embedded cavity and two necks that protrude, one on each side of the barrier.Extraordinary transmission occurs for a narrow spectral range encompassing the resonant frequency
Within the de Sitter ambient space framework, the two different bases of the one-particle Hilbert space of the de Sitter group algebra are presented for the scalar case.Using field operator algebra and its Fock space construction in this formalism, we discuss the existence of asymptotic states in de Sitter QFT under an extension of the adiabatic hy
In recent years, more and increased participation in Volunteered Geographical Information (VGI) projects provides enough data coverage for most places around the world for ordinary mapping and navigation purposes, however, the positional credibility of contributed data becomes more and more important to bring a long-term trust in VGI data.Today, it
Abstract Background In recent years, experience on the application of adaptive designs in confirmatory clinical trials has accumulated.Although planning such trials comes at the cost of additional operational complexity, adaptive designs offer the benefit of flexibility to update trial design and objectives as data accrue.In 2007, the European Medi
Franchising is not a popular business development form in Lithuania.Only 0.02% of all Lithuanian companies use franchising for business development, while in most of the developed countries franchise is recognized as a convenient business expansion form.So, new belial model what factors determine such differences in the use of franchising? Analysis