A generalized few-state model for the first hyperpolarizability

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

the use of appropriate madm model for ranking the vendors of mci equipments using fuzzy approach

abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...

A Dipole Interaction Model for the Molecular Second Hyperpolarizability

Lasse Jensen,*,† Kristian O. Sylvester-Hvid,‡ Kurt V. Mikkelsen,‡ and Per-Olof Åstrand§ Theoretical Chemistry, Materials Science Centre, RijksuniVersitet Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, Department of Chemistry, UniVersity of Copenhagen, UniVersitetsparken 5, DK-2100 Copenhagen Ø, Denmark, Department of Chemistry, Norwegian UniVersity of Science and Technology, N-749...

Breakdown of the first hyperpolarizability/bond-length alternation parameter relationship.

We have investigated the dependence of the static first hyperpolarizability on the bond-length alternation (BLA) parameter. Our analysis indicates that the validity of the first hyperpolarizability/BLA parameter relationship is restricted to the no-field, vacuum, limit, while it successively breaks down along with increasing polarity of a surrounding medium, becoming invalid, for instance, in a...

The first few hours off a respirator.