An analytical expression that estimates the separation between two point sources in arbitrary Gaussian states determines how different resources affect scaling of ultimate resolution limit with mean number emitted photons.

A constitutive model is derived from theory of elasticity for predicting ultimate drying shrinkage of concrete. The model was extended by incorporating the semiempirical composite model proposed by Hirsch and Dougill for predicting Young's modulus of concrete. Their composite model is the geometric mean of Paul's upper and lower limit boundaries of a twophase composite. According to the shrinka...

INTRODUCTION: In recent years the radio frequency (RF) electrodynamics (ED) of parallel imaging (PI) have been the subject of several theoretical studies. By calculating the maximally achievable, so-called ultimate SNR, fundamental limitations of PI have been identified and analyzed in detail (1,2). Most importantly it was found that (I) the amount of feasible reduction in PI is inherently limi...

A constitutive model is derived from theory of elasticity for predicting ultimate drying shrinkage of concrete. The model was extended by incorporating the semiempirical composite model proposed by Hirsch and Dougill for predicting Young's modulus of concrete. Their composite model is the geometric mean of Paul's upper and lower limit boundaries of a twophase composite. According to the shrinka...

Reduces weight of hull structures designed for a very large carrier plays an important role as the economic efficiency is the most significant aspect. It is known that the traditional allowable working stress approaches with high safety and reliability, it means that the hull structural weight is higher than the actual requirement in operation. Recently, the limit state approach has been widely...

Objective This study evaluated the flexural strengths of reinforced denture base resins subjected to long-term water immersion. Materials and methods Acrylic denture base resin reinforced with metal wire or glass fiber-reinforced composite (FRC), and without reinforcement were tested. Bar-shaped specimens were fabricated. Half of the specimens were stored in 37 °C distilled water for 50 hours (...

Abstract: A new decomposition method is presented to handle optimal control design for two-degree of freedom time delay control systems. In this approach exact relationships between the actuator, process and design parameters furthermore the Nyquist stability margin are developed for a first order time delay process. The ultimate robustness limit of any control can be explicitly calculated usin...

We discuss the detection limit for refractometric sensors relying on high-Q optical cavities and show that the ultimate classical detection limit is given by min {Δn} ≳ η, with n + iη being the complex refractive index of the material under refractometric investigation. Taking finite Q factors and filling fractions into account, the detection limit declines. As an example we discuss the fundame...

One of the most exciting prospects of nanotechnology is the possibility to exploit the relation between chemical reactivity and system size. Small particles are known to enhance the reactivity of molecules with metals and/or oxides. Metallic nanowires, and, in particular, atomic chains as those formed in stretched Au nanocontacts, are expected to offer the ultimate limit for the increase in rea...

The influence of nuclear polarization on the bound-electron g factor in heavy hydrogenlike ions is investigated. Numerical calculations are performed for the K-and L-shell electrons taking into account the dominant virtual nuclear excitations. This determines the ultimate limit for tests of QED utilizing measurements of the bound-electron g factor in highly charged ions.