Development of biaxial test fixture includes cryogenic application

Test fixture has the capability of producing biaxial stress fields in test specimens to the point of failure. It determines biaxial stress by dividing the applied load by the net cross section. With modification it can evaluate materials, design concepts, and production hardware at cryogenic temperatures

Visualizing roadmaps: A design-driven approach

Because they are highly visual, roadmaps can be a strong enabler of communication between different stakeholder groups and across organizations. However, the visual design of roadmaps has been largely overlooked, with little attention given to their graphic design, undermining their value as communication tools. A design-driven approach to developing a roadmap template can help practitioners create a roadmap whose visual elements support their communication goals. The design process methodology begins by eliciting the key information that needs to be conveyed by the roadmap, so that content can be aligned to audience requirements. This distills a common voice and a set of consistent messages. The approach finishes with the design of tailored visual representations that can be used to present clear and meaningful narratives to specific stakeholders.Electronic version of an article published in Research-­Technology Management (RTM), Vol. 58, No 4 (2015), pp. 45-54. Available online http://dx.doi.org/10.5437/08956308X580425

Technology roadmapping: Industrial roots, forgotten history and unknown origins

Technology roadmapping has an established and proven track record for helping organizations with their strategy, long-term planning, innovation and foresight activities. Technology Forecasting & Social Change has played a leading role in disseminating research on roadmapping and, so, for its 50th anniversary issue, this paper provides a historical account of the emergence of roadmapping from the practices developed and deployed by technological-based organizations. Motorola, BP, Philips, EIRMA, Lucent Technologies and the Semiconductor Industry Association have all made significant contributions leading to the modern form that embodies a temporal, multi-layered, systems-based approach underpinned by the ‘market-product-technology’ structure (i.e. why-what-how). However, the industrial roots of technology roadmapping can be traced back to an earlier period, which is, as of yet, unacknowledged in the technology and innovation management literature. There is the overlooked or, perhaps, forgotten history where organizations such as NASA, Boeing, GE, Lockheed, USAF, Rockwell International and the U.S. Department of Energy initiated and advanced the practice of roadmapping – through this publication, their contributions will now be given the credit they so rightfully deserve

Dytiscid Beetle Remains Discovered in a Pellet from a Great Gray Owl, Strix nebulosa, Nest

On 18 July 2007, near Goose Creek, south of Churchill Manitoba, a Great Gray Owl, Strix nebulosa, pellet that contained the pronotum and elytra of a predacious diving beetle, Dytiscus alaskanus, was discovered at a nest

Pion-Nucleus Scattering at Medium Energies with Densities from Chiral Effective Field Theories

Recently developed chiral effective field theory models provide excellent descriptions of the bulk characteristics of finite nuclei, but have not been tested with other observables. In this work, densities from both relativistic point-coupling models and mean-field meson models are used in the analysis of meson-nucleus scattering at medium energies. Elastic scattering observables for 790 MeV/$c$ $\pi^{\pm}$ on $^{208}$Pb are calculated in a relativistic impulse approximation, using the Kemmer-Duffin-Petiau formalism to calculate the $\pi^{\pm}$ nucleus optical potential.Comment: 9 page

Implications of Spontaneous Glitches in the Mass and Angular Momentum in Kerr Space-Time

The outward-pointing principal null direction of the Schwarzschild Riemann tensor is null hypersurface-forming. If the Schwarzschild mass spontaneously jumps across one such hypersurface then the hypersurface is the history of an outgoing light-like shell. The outward-- pointing principal null direction of the Kerr Riemann tensor is asymptotically (in the neighbourhood of future null infinity) null hypersurface-forming. If the Kerr parameters of mass and angular momentum spontaneously jump across one such asymptotic hypersurface then the asymptotic hypersurface is shown to be the history of an outgoing light-like shell and a wire singularity-free spherical impulsive gravitational wave.Comment: 16 pages, TeX, no figures, accepted for publication in Phys. Rev.

The Goldberg-Sachs theorem in linearized gravity

The Goldberg-Sachs theorem has been very useful in constructing algebraically special exact solutions of Einstein vacuum equation. Most of the physical meaningful vacuum exact solutions are algebraically special. We show that the Goldberg-Sachs theorem is not true in linearized gravity. This is a remarkable result, which gives light on the understanding of the physical meaning of the linearized solutions.Comment: 6 pages, no figures, LaTeX 2

Modernism, postmodernism, and corporate power : historicizing the architectural typology of the corporate campus

This paper explores the potential for a ‘marriage’ of history and critical organization studies through a conceptual synthesis of critical sociology and historiography and its application to a specific organizational phenomenon. It presents a case study of the architecture of the corporate campus headquarters, a type of business complex built in exurban, rural settings, focusing on a series of campuses built in the period 1945–2005. The main purpose of this research is to identify what the transition from architectural Modernism to Postmodernism tells us about the evolution of ideologies that animate corporations in relation to wider developments in capitalism. Our conceptual framework has temporal and spatial dimensions, drawing on architectural historiography and sociological concepts, thus allowing us to connect architecture and the social in relation to the production and projection of corporate power through a delimited historical period. We identify two main drivers behind the construction of the campuses: internally, to integrate the staff as a community, and externally, to project a desired corporate image. We also demonstrate how our conceptual synthesis sheds light on the rise and fall of individual corporations. We make the following contributions to management and organizational history: first, we demonstrate how studying organizations through the lens of corporate architecture helps us understand the connections between symbolic, social and physical space and forms of corporate power. Second, we show how a marriage of history and critical sociology can help us to understand how certain ideologically freighted architectural features endure – or return – within the changing configurations of capitalism and finally, methodologically, we demonstrate how historicizing architecture can shed light on the rise and fall of individual corporations within a given socio-historical context

The Proper Motion of SgrA*: I. First VLBA Results

We observed Sgr A* and two extragalactic radio sources nearby in angle with the VLBA over a period of two years and measured relative positions with an accuracy approaching 0.1 mas. The apparent proper motion of Sgr A* relative to J1745-283 is 5.90 +/- 0.4 mas/yr, almost entirely in the plane of the Galaxy. The effects of the orbit of the Sun around the Galactic Center can account for this motion, and any residual proper motion of Sgr A*, with respect to extragalactic sources, is less than about 20 km/s. Assuming that Sgr A* is at rest at the center of the Galaxy, we estimate that the circular rotation speed in the Galaxy at the position of the Sun is 219 +/- 20 km/s, scaled by Ro/8.0 kpc. Current observations are consistent with Sgr A* containing all of the nearly 2.6 x 10^6 solar masses, deduced from stellar proper motions, in the form of a massive black hole. While the low luminosity of Sgr A*, for example, might possibly have come from a contact binary containing of order 10 solar masses, the lack of substantial motion rules out a "stellar" origin for Sgr A*. The very slow speed of Sgr A* yields a lower limit to the mass of Sgr A* of about 1,000 solar masses. Even for this mass, Sgr A* appears to be radiating at less than 0.1 percent of its Eddington limit