Using 3.3 pb of data collected with the CMD-2 detector in the 720 – 840 MeV c.m. energy range, the branching fraction of the conversion decay ω → πee has been measured: B(ω → πee) = (8.19 ± 0.71± 0.62) · 10. The upper limits for the branching fractions of the following conversion decays have been obtained at the 90% confidence level: B(ρ → πee) < 1.6 · 10, B(ρ → ηee) < 0.7 · 10 and B(ω → ηee) <...

Tunnel structures are known as expensive infrastructures and determining optimum designs of these structures can play a great role in minimizing their cost. The formulation of optimum design of industrial tunnel sections as an optimization is considered in this paper and then the enhanced charged system search, as a recently developed meta-heuristic approach, has been applied to solve the probl...

Introduction The Greek Language and Alphabet as Ideological Signs The Language Issue The Greek Alphabet Description of the Study Analysis First Trend: A Retrospective View Second Trend: A Prospective View Third Trend: A Resistive View Conclusions Footnotes References About the Authors Editors' Note: If you have difficulty viewing the fonts in this article, you can first try changing the default...

Organizational design affects performance via coupled search processes. At low frequency, managers search for appropriate organizational designs. At higher frequency, managers use designs to search for high-performing operational choices. The two searches are coupled: organizational design molds the choice among operational alternatives, and performance feedback from operational choices shapes ...

The resolvable 2-(14, 7, 12) designs are classified in a computer search: there are 1, 363, 486 such designs, 1, 360, 800 of which have trivial full automorphism group. Since every resolvable 2-(14, 7, 12) design is also a resolvable 3-(14, 7, 5) design and vice versa, the latter designs are simultaneously classified. The computer search utilizes the fact that these designs are equivalent to ce...

This note builds on results from Wu, Mee and Tang‘s (2012) article (henceforth WMT) on admissible fractional factorial two-level designs, specifically concentrating on the “dominating designs” that have been introduced but not further pursued in WMT. WMT’s work has been used for increasing the efficiency of the author’s graph-based algorithm for creation of minimum aberration designs that keep ...

Previous studies on event-related functional magnetic resonance imaging experimental designs are primarily based on linear models, in which a known shape of the hemodynamic response function (HRF) is assumed. However, the HRF shape is usually uncertain at the design stage. To address this issue, we consider a nonlinear model to accommodate a wide spectrum of feasible HRF shapes, and propose eff...

Orthogonal arrays are widely used in industrial experiments for factor screening. Suppose only a few of the factors in the experiments turn out to be important. An orthogonal array can be used not only for screening factors but also for detecting interactions among a subset of active factors. In this article, a set of optimality criteria is proposed to assess the performance of designs for fact...