Parametric down-conversion (PDC) is the established standard for the practical generation of a multiplicity of quantum optical states. These include two-mode squeezed vacuum1, heralded non-Gaussian states2–6 and entangled photon pairs7, 8. Detailed theoretical studies provide insight into the time-frequency (TF) structure of PDC, which are governed by the complex-valued joint spectral amplitude...

Soils and foundation of Bayon temple Angkor Thom has been studied since 1994 by Japanese Government Team for Safeguarding (JSA). The main tower 32m in height from the base mound consists manmade fill 14 m thickness. was found as a simple shallow direct foundation. This is just like 10 story RC building standing upon thick sand without such deep piling. At present, structure based sandy shall lo...

Recent research has shown that virtual agents expressing empathic emotions toward users have the potentiality to enhance human-machine interaction. To identify under which circumstances a virtual agent should express empathic emotions, we have analyzed real human-machine dialog situations that have led users to express emotion. The results of this empirical study have been combined with theoret...

The static determination of approximated values of string expressions has many potential applications. For instance, approximated string values may be used to check the validity and security of generated strings, as well as to collect the useful string properties. Previous string analysis efforts have been focused primarily on the maxmization of the precision of regular approximations of string...

The fishing net sinker workers are exposed to numerous workplace hazards that can endanger their health and safety. We utilized a walk-through survey Job Safety Analysis (JSA) technique assess each step of the work process, identify potential on job suggest safest approach in southern Thailand. A JSA is useful tool for mitigating risk workplace. It emphasizes interaction between workers, tools ...