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Some Comments on Generative Anthropology
Raymond Swing
Anthropoetics : the Journal of Generative Anthropology , 2000,
Conceptualizing and other Generative Acts
Raymond Swing
Anthropoetics : the Journal of Generative Anthropology , 2003,
Broadening our perspective
William Lacy Swing
Forced Migration Review , 2012,
First record of an elephant fish (Chondrichthyes, Holocephali) in Ecuadorian waters during an ENSO event
Swing,Kelly; Béarez,Philippe;
Revista de biología marina y oceanografía , 2006, DOI: 10.4067/S0718-19572006000100013
Abstract: un pez elefante se reporta por la primera vez del ecuador continental. un solo espécimen del pejegallo suramericano común, callorhinchus callorynchus, fue recogido en puerto lópez en 1998. este registro corresponde a una extensión del rango de distribución hacia el norte de por lo menos 500 km. su ocurrencia en ecuador podría ser ligada al acontecimiento de la ni?a 1998-2001.
Advances in precision contrast interferometry with Yb Bose-Einstein condensates
Alan O. Jamison,Benjamin Plotkin-Swing,Subhadeep Gupta
Physics , 2014, DOI: 10.1103/PhysRevA.90.063606
Abstract: Using a three-path contrast interferometer (CI) geometry and laser-pulse diffraction gratings, we create the first matter-wave interferometer with ytterbium (Yb) atoms. We present advances in contrast interferometry relevant to high-precision measurements. By comparing to a traditional atom interferometer, we demonstrate the immunity of the CI to vibrations for long interaction times (> 20 ms). We characterize and demonstrate control over the two largest systematic effects for a high-precision measurement of the fine structure constant via photon recoil with our interferometer: diffraction phases and atomic interactions. Diffraction phases are an important systematic for most interferometers using large-momentum transfer beam splitters; atomic interactions are a key concern for any BEC interferometer. Finally, we consider the prospects for a future sub-part per billion photon recoil measurement using a Yb CI.
Mineral Licks as Diversity Hotspots in Lowland Forest of Eastern Ecuador
John G. Blake,Diego Mosquera,Jaime Guerra,Bette A. Loiselle,David Romo,Kelly Swing
Diversity , 2011, DOI: 10.3390/d3020217
Abstract: Mineral licks are sites where a diverse array of mammals and birds consume soil (geophagy) or drink water, likely for mineral supplementation. The diversity of species that visit such sites makes them important for conservation, particularly given that hunters often target animals at licks. Use of mineral licks varies among species, with frugivores among the most common visitors but there is considerable temporal and spatial variation in lick use both within and among species. Camera traps triggered by heat and motion were used to document use of mineral licks by birds and non-volant mammals over a four-year period at a lowland forest site in eastern Ecuador. We obtained 7,889 photographs representing 23?mammal species and 888 photographs representing 15 bird species. Activity (photographs/100 trap-days) at the four licks varied from 89 to 292 for mammals and from six to 43 for birds. Tapirs ( Tapirus terrestris), peccaries ( Pecari tajacu, Tayassu pecari), deer ( Mazama americana), and pacas ( Cuniculus paca) were the most frequent mammal visitors; guans ( Pipile pipile) and pigeons ( Columba plumbea) were the most common birds. Use of licks varied diurnally and seasonally but patterns of use varied among species and sites. Mineral licks provide an important resource for many species but further studies are needed to determine the precise benefit(s) obtained and how benefits may vary with diet and other factors, such as rainfall.
TCreERT2, a Transgenic Mouse Line for Temporal Control of Cre-Mediated Recombination in Lineages Emerging from the Primitive Streak or Tail Bud
Matthew J. Anderson, L. A. Naiche, Catherine P. Wilson, Cindy Elder, Deborah A. Swing, Mark Lewandoski
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0062479
Abstract: The study of axis extension and somitogenesis has been greatly advanced through the use of genetic tools such as the TCre mouse line. In this line, Cre is controlled by a fragment of the T (Brachyury) promoter that is active in progenitor cells that reside within the primitive streak and tail bud and which give rise to lineages emerging from these tissues as the embryonic axis extends. However, because TCre-mediated recombination occurs early in development, gene inactivation can result in an axis truncation that precludes the study of gene function in later or more posterior tissues. To address this limitation, we have generated an inducible TCre transgenic mouse line, called TCreERT2, that provides temporal control, through tamoxifen administration, in all cells emerging from the primitive streak or tail bud throughout development. TCreERT2 activity is mostly silent in the absence of tamoxifen and, in its presence, results in near complete recombination of emerging mesoderm from E7.5 through E13.5. We demonstrate the utility of the TCreERT2 line for determining rate of posterior axis extension and somite formation, thus providing the first in vivo tool for such measurements. To test the usefulness of TCreERT2 for genetic manipulation, we demonstrate that an early deletion of ?-Catenin via TCreERT2 induction phenocopies the TCre-mediated deletion of ?-Catenin defect, whereas a later induction bypasses this early phenotype and produces a similar defect in more caudal tissues. TCreERT2 provides a useful and novel tool for the control of gene expression of emerging embryonic lineages throughout development.
Production of quantum degenerate mixtures of ytterbium and lithium with controllable inter-species overlap
Anders H. Hansen,Alexander Y. Khramov,William H. Dowd,Alan O. Jamison,Benjamin Plotkin-Swing,Richard J. Roy,Subhadeep Gupta
Physics , 2012, DOI: 10.1103/PhysRevA.87.013615
Abstract: Quantum degenerate mixtures of alkali and spin-singlet atoms form the starting point for studying few- and many-body physics of mass-imbalanced pairs as well as the production of paramagnetic polar molecules. We recently reported the achievement of dual-species quantum degeneracy of a mixture of lithium and ytterbium atoms. Here we present details of the key experimental steps for the all-optical preparation of these mixtures. Further we demonstrate the use of the magnetic field gradient tool to compensate for the differential gravitational sag of the two species and control their spatial overlap.
Global Conservation Significance of Ecuador's Yasuní National Park
Margot S. Bass,Matt Finer,Clinton N. Jenkins,Holger Kreft,Diego F. Cisneros-Heredia,Shawn F. McCracken,Nigel C. A. Pitman,Peter H. English,Kelly Swing,Gorky Villa,Anthony Di Fiore,Christian C. Voigt,Thomas H. Kunz
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0008767
Abstract: The threats facing Ecuador's Yasuní National Park are emblematic of those confronting the greater western Amazon, one of the world's last high-biodiversity wilderness areas. Notably, the country's second largest untapped oil reserves—called “ITT”—lie beneath an intact, remote section of the park. The conservation significance of Yasuní may weigh heavily in upcoming state-level and international decisions, including whether to develop the oil or invest in alternatives.
Dopaminergic Neuronal Loss, Reduced Neurite Complexity and Autophagic Abnormalities in Transgenic Mice Expressing G2019S Mutant LRRK2
David Ramonet,Jo?o Paulo L. Daher,Brian M. Lin,Klodjan Stafa,Jaekwang Kim,Rebecca Banerjee,Marie Westerlund,Olga Pletnikova,Liliane Glauser,Lichuan Yang,Ying Liu,Deborah A. Swing,M. Flint Beal,Juan C. Troncoso,J. Michael McCaffery,Nancy A. Jenkins,Neal G. Copeland,Dagmar Galter,Bobby Thomas,Michael K. Lee,Ted M. Dawson,Valina L. Dawson,Darren J. Moore
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0018568
Abstract: Mutations in the leucine-rich repeat kinase 2 (LRRK2) gene cause late-onset, autosomal dominant familial Parkinson's disease (PD) and also contribute to idiopathic PD. LRRK2 mutations represent the most common cause of PD with clinical and neurochemical features that are largely indistinguishable from idiopathic disease. Currently, transgenic mice expressing wild-type or disease-causing mutants of LRRK2 have failed to produce overt neurodegeneration, although abnormalities in nigrostriatal dopaminergic neurotransmission have been observed. Here, we describe the development and characterization of transgenic mice expressing human LRRK2 bearing the familial PD mutations, R1441C and G2019S. Our study demonstrates that expression of G2019S mutant LRRK2 induces the degeneration of nigrostriatal pathway dopaminergic neurons in an age-dependent manner. In addition, we observe autophagic and mitochondrial abnormalities in the brains of aged G2019S LRRK2 mice and markedly reduced neurite complexity of cultured dopaminergic neurons. These new LRRK2 transgenic mice will provide important tools for understanding the mechanism(s) through which familial mutations precipitate neuronal degeneration and PD.
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