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Olsen, J.S.,Van der Eijk, C.,Zhang, Z.L. Techno-Press 2008 Smart Structures and Systems, An International Jou Vol.4 No.2
The work presented in this paper includes material characterisation and an investigation of suitability in seismic dampers for two commercially available NiTi-alloys, along with a numerical analysis of a new damper system employing composite NiTi-wires. Numerical simulations of the new damper system are conducted, using Brinson's one-dimensional constitutive model for shape memory alloys, with emphasis on the system's energy dissipation capabilities. The two alloys tested showed some unwanted residual strain at temperatures higher than $A_f$, possibly due to stress concentrations near inclusions in the material. These findings show that the alloys are not ideal, but may be employed in a seismic damper if precautions are made. The numerical investigations indicate that using composite NiTi-wires in a seismic damper enhances the energy dissipation capabilities for a wider working temperature range.
Marketing an International Auxiliary Language : Challenges to a New Artificial Language
Olsen, Neil Institute for University Language Sejong Instituti 2003 Journal of Universal Language Vol.4 No.1
This paper examines international auxiliary languages from the point of view that they are products competing in the world linguistic market place. Several factors have contributed to the proliferation of artificial or constructed languages in recent decades. The globalization of social, economic, and intellectual information through the World Wide Web (internet) has made access to the tremendous theoretical and practical progress and educational advances in the field of linguistics, language learning, and language planning. In a world where designer and hobby languages abound, how can an international auxiliary language attract a clientele and achieve the goal of facilitating international communication? The “experiences” of Volapu¨k, Esperanto, Loglan/Lojban, and Klingon are examined as case studies.
ON SIMULTANEOUS LOCAL DIMENSION FUNCTIONS OF SUBSETS OF ℝ<sup>d</sup>
OLSEN, LARS Korean Mathematical Society 2015 대한수학회보 Vol.52 No.5
For a subset $E{\subseteq}\mathbb{R}^d$ and $x{\in}\mathbb{R}^d$, the local Hausdorff dimension function of E at x and the local packing dimension function of E at x are defined by $$dim_{H,loc}(x,E)=\lim_{r{\searrow}0}dim_H(E{\cap}B(x,r))$$, $$dim_{P,loc}(x,E)=\lim_{r{\searrow}0}dim_P(E{\cap}B(x,r))$$, where $dim_H$ and $dim_P$ denote the Hausdorff dimension and the packing dimension, respectively. In this note we give a short and simple proof showing that for any pair of continuous functions $f,g:\mathbb{R}^d{\rightarrow}[0,d]$ with $f{\leq}g$, it is possible to choose a set E that simultaneously has f as its local Hausdorff dimension function and g as its local packing dimension function.