57 research outputs found
DETERMINATION OF 8--15 MICRON SIMULTANEOUS TRANSITION STABILITY UTILIZING REAL TIME VISIBLE DISPLAY IR DETECTION
No full textJ. E. Kiefer, A. Yariv, Appl. Phys. Letters 15, 26 (1969) J. A. Birken, R. G. Seed, J. A. Macken, to be published. J. A. Birken, R. G. Seed, J. A. Macken, Laser Session---this symposium. W. S. Benedict, private communication.""Author Institution:IR detection by thermal quenching of ultraviolet excited phosphorescent screens provides a visible of the quenching radiation’s spatial distribution and termporal continuity. By dispersing the IR beam onto the screen, the grating wavelength dependent function determines the line’s visible screen location. An axis on the screen can be directly calibrated in wavelength for convenient employment. Such a technique allows simultaneous observation of all IR transitions occuring within the frequency range of the instrument during the relaxation time of the screen. A concentric plasma laser cavity provides isolated multiline transitions from different vibrational bands of the lasing With , isolated multiline transitions have been produced from 8--15 microns---see figure . Understanding the mechanism producing this required spectral/temporal continuity measurement. Whether the observed broadband multiline emission is truly or quasi continuous---as certain dynamic theory suggests---has been determined. A number of lasers appearing to possess a stable single line have been found to emit primarily on this line with wandering to other lines for short durations. Such a technique has proven itself extremely convenient and valuable in these quarters. Efforts are underway to increase the intensity resolution and extend the operating range from 3--30 microns
Interfacial Positions in Steady Converging Microchannel Flows of Immiscible Fluids
No full textThe three-dimensional steady-state separation surface formed by the 90° microchannel\ud
convergence of water into oil was characterized using fluorescence, confocal microscopy,\ud
and volume reconstruction techniques. Steady-state convergence was achieved for a\ud
range of relative volumetric flow rates, with an oil-to-water ratio from 1:20 (1 uL/min :\ud
20 uL/min) to 1:3 (3 uL/min : 9 uL/min). The resultant interface locations, as measured\ud
at the center depth, showed oil dominating the channel despite the much higher\ud
volumetric flow rate of water. Examination of a vertical cross-sectional slice of the\ud
converged fluids reveals definite curvature, with the oil impinging on the water at the\ud
mid-depth of the channel. These effects, which are atypical for water versus water flow\ud
under similar conditions, are attributed to the immiscibility of the two fluids, their surface\ud
tensions, and the large difference in their viscosities and Reynolds numbers
Review: Artist as Author: Action and Intent in Late-Modernist American Painting
No full textBook review of Artist as Author: Action and Intent in Late-Modernist American Painting by Christa Noel Robbins. University of Chicago Press, June 2021. 256 p. Ill. ISBN 9780226752952 (h/c), $45.00. Reviewed November 2021 by Heather Saunders, Dean of Libraries and Archives, Acadia University, [email protected]
A Sudden Gust of Wind
No full textUbiquitous yet subjectively sensed in specific times and places, the natural processes of sunlight, heat, water, and air are integral to architecture and the built environment. Architects have explored the possibilities of designing with the weather, yet although the weather is tacit to our spatial intelligence, designing for it primarily occurs in conditioned interiors, utilising scientific data and analytical processes. Few have recognised that creative richness might arise from an intuitive appreciation of the weather-world, and articulated how individuals might develop this awareness. A Sudden Gust of Wind drifts away from architectural convention to investigate the author’s sensibility to the weather and its influence on creative processes and ideas.
Following the author's repeated immersion within various atmospheric phenomena, this investigation examines the spatial and creative results of directly studying, communicating, and remembering the weather. Acknowledging the complex and interrelated environment architects engage in, the accumulation of imagery and text portrays the author’s developing sensibility to weather, culminating in a series of drawings, journals, and strategies that challenge preconceptions of design processes. Working with the weather is inductive yet impermanent, embracing flux over fixity in the creative process. The weather is understood to complement the design process, not a crisis to be opposed or a resource to be utilised. Where designing for climate starts with past conditions to fix future conditions, designing with weather is engulfed by the present, placing the moods and motivations of the author in contact and conflict with the poetic, expressive, and sensorial
Reconstructing the speculative history of Boley, Oklahoma an all-black town in the middle of the prairie
No full textThis paper explores the Oklahoma town of Boley, a historically significant Black community founded in the early 1900s. The author argues for the importance of using speculative design methods to not only preserve the past, but also to inspire more inclusive and equitable urban spaces in the future.Architectur
Environmental context and recognition: the role of recollection and familiarity
No full textEvidence for effects of changed environmental context on recognition has been equivocal. Using 3
experiments, the author investigated the role of environmental context from a dual-processing approach.
Experiment 1 showed that testing word recognition in a novel context led to a reliable decrement but only
for recognition accompanied by conscious recollection, with familiarity-based recognition judgments
being unaffected. This was replicated in Experiment 2 using stimuli that were novel to the participants
(nonwords). Experiment 3 showed that the decrement in recollection also occurred when the changedcontext
condition involved presenting items in a different but familiar context. The results suggest that
effects of environmental context will only be found when recognition is accompanied by conscious
recollection and that this effect is due to a specific item– context association
Recommended from our members
Contemporary issues in international arbitration and mediation. The Fordham papers 2015 /
No full textThe 2015 volume of Contemporary Issues in International Arbitration and Mediation: The Fordham Papers is a collection of important works in the field written by the speakers at the 2015 Fordham Law School Conference on International Arbitration and Mediation. The papers are organized into the following parts: Keynote Presentation by Hon. Stephen M. Schwebel PART 1: Innovations in International Arbitration by Barru Leon, Sophie Lamn, Hon. William G. Bassler, William W. Park, and Josefa Sicard-Mirabal PART 2: Investor-state Arbitration by Edward G. Kehoe, Klaus Reichert, Catherine Amirfar, Nicholas Fletcher QC, and Susan D. Franck PART 3: The Confluence of EU Law and International Arbitration - Both Commercial and Investor-State by John Gaffney, Fidelma Macken SC, and Kaj Hober PART 4: Corporate Issues by Wolfgang Peter, Thomas H. Lee, and Vera Korzu
Influenza aerosols in UK hospitals during the influenza H1N1 (2009–10) pandemic: air sampling in the vicinity of patients undergoing WHO-defined aerosol generating procedures
No full textThe Book as Site: Alternative Modes of Representing and Documenting Architecture
No full textArchitectural space is usually documented in the form of orthographic projections, that is, plan, section and elevation drawings, with perspective and three-dimensional models. These render the space in a particular way and hence, have limitations and specificity. The artist’s book – that is, a book made as an original work of art, with an artist or architect as author – offers a different mode of presenting documentation and reading representation. This thesis examines the potential for the documentation of space by coupling the artist’s book with the content of post factum architectural documentation. Through an examination of the relationship between the drawing, the building and the book, and various case studies, the potentiality of the book as a site for architecture is examined. This thesis proposes the artist’s book as a complementary, three-dimensional architectural representation with a generational and propositional role within the design process. This examination repositions books within an expanded notion of the design process, which displaces the built object as the endpoint of this process, and investigates the critical facility of artists’ books. The creative work presented for examination comprises three artists’ books – 'Mies van der Rohe: Built Houses'; 'Ise Jingū: Beginning Repeated'; and '$1.45¢: Houses in the Museum Garden: Biography of an Exhibition' – which operate as case studies, within the text. These works are informed by the research of the dissertation and frame the reading of this text. Three other works, undertaken through the course of the study, are also presented, and further explore the ideas presented in the textual enquiry of the thesis
The Book as site: Alternative modes of representing and documenting architecture
No full textArchitectural space is usually documented in the form of orthographic projections, that is, plan, section and elevation drawings, with perspective and three-dimensional models. These render the space in a particular way and hence, have limitations and specificity. The artist’s book – that is, a book made as an original work of art, with an artist or architect as author – offers a different mode of presenting documentation and reading representation. This thesis examines the potential for the documentation of space by coupling the artist’s book with the content of post factum architectural documentation. Through an examination of the relationship between the drawing, the building and the book, and various case studies, the potentiality of the book as a site for architecture is examined. This thesis proposes the artist’s book as a complementary, three-dimensional architectural representation with a generational and propositional role within the design process. This examination repositions books within an expanded notion of the design process, which displaces the built object as the endpoint of this process, and investigates the critical facility of artists’ books. The creative work presented for examination comprises three artists’ books – Mies van der Rohe: Built Houses; Ise Jingū: Beginning Repeated; and $1.45¢: Houses in the Museum Garden: Biography of an Exhibition – which operate as case studies, within the text. These works are informed by the research of the dissertation and frame the reading of this text. Three other works, undertaken through the course of the study, are also presented, and further explore the ideas presented in the textual enquiry of the thesis
- …
