354 research outputs found
AHC interview with Ruth B. Mandel
No full textMay 31, 2012Ruth B. Mandel was born Ruth Blumenstock in Vienna, Austria.Austrian Heritage CollectionRuth B. Mandel is the author of the book 'Jewish women in politics'.Digital recordin
Secrets from the Deep and the Shallow: Using Experimental Fluid Mechanics to Study Oil Spills and Seagrass Meadows
No full textMany processes in our environment are governed by physics: the seasonal overturning of a lake, the breaking of waves over coral reefs, and even the waving of wheat in a farmer’s field. In this presentation I will focus on two problems in environmental fluid mechanics, and how we study them in an idealized laboratory environment. First, I will discuss the first step in remote characterization of seagrass beds by studying the overlying water surface. Flow through a seagrass bed can generate large overturning vortex structures, which cause small perturbations in the water surface slope. Using laboratory experiments, we are able to generate a parameterized model to reconstruct within-canopy velocity profiles solely from water surface measurements, suggesting that the subsurface hydrodynamics and geometry can be predicted by measuring the water surface behavior alone.
Second, I will address the role of the ocean’s stratification in the subsurface trapping of oil well leaks. As a droplet of oil rises in the ocean, it encounters fluid of varying density, and can become trapped as an intrusion layer in a region of strong density gradients. We find that for drop Froude numbers less than 1, fluid entrainment and drop retention are significant, as the buoyancy timescale (1/N) is less than the timescale of drop motion (U/d). For larger Froude numbers, retention is minimal. We expect this scaling to have applications in other small-scale ocean dynamics, such as natural oil and gas seeps in coastal waters, and in the behavior of particulates and biota in stratified benthic boundary layers.
Through these two case studies, I will demonstrate the laboratory tools we use, and how results obtained in a tank in the lab can be applied to their associated real-world setting. I hope the audience will gain an appreciation of the utility of idealized fluid mechanics experiments in isolating, studying, and furthering our understanding of the physics of our environment. I will close with a brief discussion of the new directions and projects my students and I are working on here at UNH.
Presenter Bio
Dr. Tracy Mandel joined UNH in January 2020 as an Assistant Professor in Ocean Engineering and Mechanical Engineering. She received her M.S. and Ph.D. in Environmental Fluid Mechanics and Hydrology from Stanford University in 2013 and 2018, and a B.S. in Environmental Engineering from Cornell University in 2012. Prior to coming to UNH, she was a postdoctoral scholar at University of California, Merced in Physics and Applied Math. Her broader research interests include coastal processes, canopy flow, experimental methods in fluid dynamics, and the water-surface signatures of aquatic ecosystems and other ocean processes
From Meadow to Micro: Using Experimental Fluid Mechanics to Study Seagrass Beds and Oil Spills
No full textMany processes in our environment are governed by physics: the seasonal overturning of a lake, the breaking of waves over coral reefs, and even the waving of wheat in a farmer’s field. In this presentation, I will focus on two problems in environmental fluid mechanics, and how we study them in an idealized laboratory environment. First, I will discuss the first step in remote characterization of seagrass beds by studying the overlying water surface. Flow through a seagrass bed can generate large overturning vortex structures, which cause small perturbations in the water surface slope. Using laboratory experiments, we are able to generate a parameterized model to reconstruct within-canopy velocity profiles solely from water surface measurements, suggesting that the subsurface hydrodynamics and geometry can be predicted by measuring the water surface behavior alone.
Second, I will address the role of stratification and interfacial surface tension in subsurface trapping of oil well leaks. As a droplet of oil rises in the ocean, it encounters fluid of varying density, and can become trapped as an intrusion layer in a region of strong density gradients. We find that for drop Froude numbers less than 1, fluid entrainment and drop retention are significant, as the buoyancy timescale (1/N) is less than the timescale of drop motion (U/d). For larger Froude numbers, the drop behaves as if it is in a homogeneous fluid and retention is minimal. We expect this scaling to have applications in other microscale dynamics, such as natural oil and gas seeps in coastal waters, and in the behavior of particulates and biota in stratified benthic boundary layers.
Through these two case studies, I will demonstrate the laboratory tools we use, and how results obtained in a tank in the lab can be applied to their associated real-world setting. I hope the audience will gain an appreciation of the utility of idealized fluid mechanics experiments in isolating, studying, and furthering our understanding of the physics of our environment.
Presenter Bio
Tracy Mandel received her M.S. and Ph.D. in Environmental Fluid Mechanics and Hydrology from Stanford University in 2013 and 2018, and a B.S. in Environmental Engineering from Cornell University in 2012. She is currently a postdoctoral scholar at the University of California, Merced, where her research focuses on the dynamics of oil plumes rising in stratified fluids. Her broader research interests include coastal processes, experimental methods in fluid dynamics, and the hydrodynamic signatures of aquatic ecosystems
Hemingway’s \u3cem\u3eThe Dangerous Summer\u3c/em\u3e: The Complete Annotations
No full textComprehensive guide to the people, places, events, and other allusions making up Hemingway’s final book on Spain and the bullring. Mandel identifies, explains, and interprets each entry, bringing to bear her extensive knowledge of both author and taurine history and politics. Her introduction surveys Hemingway’s lifelong fascination with the corrida before moving into a discussion of the many elements comprising the bullfight, from bull breeding to taurine laws. Mandel closes her introduction with an overview of the complicated composition, revision, editing, and publication of the various versions of the narrative. Includes a dozen black-and-white photographs, extensive endnotes, and index
Guest Speakers for POLS 672 Politics of the Future 10-25-1989
No full textGuest speakers Walter Truitt Anderson (author of numerous books including "Reality Isn’t What It Used to Be") and Tom Mandel (inventor of the term "surfing the net" and first person to die on the net with Beethoven's 9th playing) speak on the state of futures studies and make several projections about the coming decades
Subject and Author: The Literary Backgrounds of \u3cem\u3eDeath in the Afternoon\u3c/em\u3e
No full textProvides two bibliographies of literature that influenced Hemingway’s writing of the book, including memoirs, histories, novels, and travel guides. The first covers a broad range of English-language works on Spain and the bullfight, specifically identifying those owned by Hemingway. The second annotates Hemingway’s readings on the subject in Spanish, French, and English. In her detailed introduction, Mandel explains the place Death in the Afternoon holds as one of the most accurate and respected books on bullfighting in Spain, with Hemingway’s volume closer to the Spanish tradition of writing on the bullfight than the English
The Prospero of Wonderland; or, Miranda Carroll, Author of Station Eleven
No full textAnalysis of Emily St. John Mandel\u27s novel Station Eleven and its Shakespearean antecedents, particularly The Tempest. This article reads Mandel\u27s character Miranda Carroll as an artist-figure comparable to Prospero. I argue that Miranda is the embedded author of the entire Station Eleven--both pre- and post-pandemic--in ways that mirror themes of revenge and forgiveness in The Tempest
Sara Hartland-Rowe : What Are Days For?
No full textCatalogue to accompany Hartland-Rowe’s exhibition based on the theme: “What are days for?” Quinton’s analysis of the iconography used in the artist’s narrative paintings highlights the biblical, literary and mythological sources of the imagery. The author also compares the human figures, animals and plant forms represented to the backgrounds of medieval woven tapestries. Mandel provides detailed descriptions of various elements of the exhibition, and suggests that Hartland-Rowe’s paintings are a form of storytelling. Figurative, narrative and symbolic aspects of the works are considered in relation to medieval, renaissance and modernist painting. Includes a brief artist’s statement. List of works. Biographical notes. 26 bibl. ref
Hong-Ou-Mandel Interference: A spectral-temporal analysis
No full textHong-Ou-Mandel interference is most dramatic when the photons involved are perfectly indistinguishable. Departures from this ideal scenario, however, are also interesting and useful to consider. In this tutorial, we analyze scenarios where the degree of the photons' distinguishability depends on their spectral and temporal ``overlap.'' We first consider photons that are both spectrally pure and spectrally separable. We then generalize this to include spectrally entangled (but still spectrally pure) photons, and spectrally mixed (but still spectrally separable) photons. This tutorial equips researchers with tools for a deeper understanding of this interesting phenomenon and its various applications.The presentation of the authors' names and (or) special characters in the title of the pdf file of the accepted manuscript may differ slightly from what is displayed on the item page. The information in the pdf file of the accepted manuscript reflects the original submission by the author
Beauty or money? Statistical analysis
No full textThere are many studies investigating relationship between paintings' meta information (author, age, etc.) and their prices, however, there is limited research on how people's aesthetic perception of paintings is related to their prices. To bridge this gap, we designed a website (pollart1000.com) collecting survey responses on people's opinions regarding aesthetic values of paintings; survey and data were complemented with price information. Comprehensive statistical analysis of that data is presented, including scoring of the best and worst works, correlations between variables, typology of respondents, and more. The results quantify relationships between aesthetic values and art prices. Particularly, we showed that aesthetic preference is inclined to figurative and innovational rather than to abstract art and that relations between price and aesthetic values are rather weak except of special cases
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