11,113 research outputs found
alpha-xone/xbbg: Custom config and etc. for reference exchange (author hceh)
No full textIntuitive Bloomberg data AP
Lambda Alpha Journal of Man, v.16, no.2 (complete version)
No full textDr. Wayne L. Parris, Editor-in-chief; Jan Smith and Lorna Batterson, Student co-editors.This issue of LAJ consists of three articles:
Cultural Relativism and Environmental Ethics by Lawrence T. Willett; Change and Continuity in a Peruvian Expatriate Community: Sr. de los Milagros in Lima, Peru and Chicago, Illinois by Margo. L. Smith; and Speculation on the Genetic Origin of Cultural behavior: A Key Mutation for Asymmetry by Anthony D'Agostino
Functional Characterisation of Alpha-Galactosidase A Mutations as a Basis for a New Classification System in Fabry Disease
No full textThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.The study has been supported partially by an unrestricted scientific grant from Shire Human Genetic Therapies (Germany
Application of vertical axis wind turbines as a sustainable solution for electricity supply in vulnerable urban markets
No full textThis work presents the design and implementation of a vertical axis wind turbine as a sustainable energy alternative for urban areas that experience frequent electricity outages. The project was carried out at the San Valentín Market, located in San Martín de Porres, Lima, where instability in electrical supply affects commercial development. An integrated methodology was employed, using both qualitative and quantitative tools, such as surveys, interviews, experimental testing of the prototype, and social validation. The results revealed that 70% of the merchants expressed interest in implementing this system, highlighting its efficiency, low maintenance, quiet operation, and minimal environmental impact. It is concluded that the adoption of vertical axis wind turbines in urban environments represents a technically viable and socially accepted solution, with potential for replication in other similar contexts.Este trabajo presenta el diseño y la puesta en marcha de un aerogenerador de eje vertical como alternativa energética sostenible para zonas urbanas que experimentan cortes frecuentes de electricidad. El proyecto se llevó a cabo en el Mercado San Valentín, ubicado en San Martín de Porres, Lima, donde la inestabilidad del suministro eléctrico afecta el desarrollo comercial. Se empleó una metodología integral, utilizando tanto herramientas cualitativas como cuantitativas, tales como encuestas, entrevistas, pruebas experimentales del prototipo y validación social. Los resultados revelaron que el 70% de los comerciantes mostró interés en implementar este sistema, destacando su eficiencia, bajo mantenimiento, operación silenciosa y escaso impacto ambiental. Se concluye que la adopción de aerogeneradores de eje vertical en entornos urbanos representa una solución técnica viable y aceptada socialmente, con potencial para ser replicada en otras realidades similares
The IPHAS catalogue of H alpha emission-line sources in the northern Galactic plane
No full textWe present a catalogue of point-source H alpha emission-line objects selected from the INT/WFC Photometric Ha Survey (IPHAS) of the northern Galactic plane. The catalogue covers the magnitude range 13 <= r' <= 19.5 and includes Northern hemisphere sources in the Galactic latitude range -5 degrees < b < 5 degrees. It is derived from similar to 1500 deg(2) worth of imaging data, which represents 80 per cent of the final IPHAS survey area. The electronic version of the catalogue will be updated once the full survey data become available. In total, the present catalogue contains 4853 point sources that exhibit strong photometric evidence for Ha emission. We have so far analysed spectra for similar to 300 of these sources, confirming more than 95 per cent of them as genuine emission-line stars. A wide range of stellar populations are represented in the catalogue, including early-type emission-line stars, active late-type stars, interacting binaries, young stellar objects and compact nebulae.
The spatial distribution of catalogue objects shows overdensities near sites of recent or current star formation, as well as possible evidence for the warp of the Galactic plane. Photometrically, the incidence of Ha emission is bimodally distributed in (r' - i'). The blue peak is made up mostly of early-type emission-line stars, whereas the red peak may signal an increasing contribution from other objects, such as young/active low-mass stars. We have cross-matched our H alpha-excess catalogue against the emission-line star catalogue of Kohoutek & Wehmeyer, as well as against sources in SIMBAD. We find that fewer than 10 per cent of our sources can be matched to known objects of any type. Thus IPHAS is uncovering an order of magnitude more faint (r' > 13) emission-line objects than were previously known in the Milky Way
Anthony Sanchez Interview
No full textAnthony Sanchez (Class of 2008) was interviewed by Valeria Reynosa via the Zoom internet-based video conferencing software on June 16, 2021. Mr. Sanchez was born in Anchorage, Alaska. His father was in the Air Force, so Mr. Sanchez grew up partially in Alaska, and then in Milwaukee, before his family moved to San Antonio when he was twelve. He became interested in attending SMU due to the strength of its business school, and initially attended starting in 1986. While at SMU he was a member of the College Hispanic American Students and the Lambda Chi Alpha fraternity, and worked as a campus tour guide and as an RA. During his interview, Mr. Sanchez reflects on the mentors he had throughout his time at SMU, as well as the difficulties he experienced in his early years at the university. Mr. Sanchez left SMU before completing his degree and entered the workforce, where he worked in Human Resources for a number of years. He returned to complete his degree in 2008, graduating with a Bachelor's in corporate communications. He discusses the differences between his experiences at SMU as a young man in the 1980s and as an older student in the 2000s, and how completing his degree impacted his career after graduation. At the time of the interview, Mr. Sanchez lived in Beaumont, Texas, with his wife and children, and worked as an Associate Vice President of Human Resource and Talent Management
Copper-Catalyzed Addition of Alkylboranes to Iminoacetates: Access to alpha-Alkyl Branched alpha-Amino Acids
No full textA copper(I)-catalyzed addition of alkylborane reagents to alpha-iminoacetates has been developed to assemble both acyclic and cyclic alpha-branched alpha-amino carboxylic acid derivatives in good yields. A wide variety of unactivated alkenes are well tolerated in this transformation
Formation of Chiral alpha-Monofluorinated-beta-amino Esters through Organocatalytic Asymmetric Reduction of alpha-Fluoro-beta-enamino Esters by Trichlorosilane
No full textA concise method was developed to prepare chiral alpha-monofluorinated-beta-amino esters through N-sulfinyl urea catalyzed asymmetric hydrosilylation of alpha-fluoro-beta-enamino esters, which affords high yields, good to high diastereoselectivities (up to>99/1), and moderate to good enantioselectivities (up to 83% ee)
ODM2/YODA-File: v0.1-alpha: Initial alpha release for testing
No full text<p><strong><a href="https://github.com/ODM2/YODA-File">YAML Observation Data Archive & Exchange (YODA) Format</a></strong></p>
<p>We developed the YAML Observation Data Archive & Exchange (YODA) File Format to serve as a specification for human-readable, machine-parseable, text-based data files that accommodate the full diversity of critical zone science data -- such as hydrological time series, soil profile geochemistry, biodiversity transects, etc. -- that can be organized with the <a href="https://github.com/ODM2/ODM2">Observations Data Model v2 (ODM2)</a> Specifically, we designed the YODA File format to meet the following requirements:</p>
<ul>
<li><strong>Easy for humans to read and use</strong>. Anyone opening the file in a text editor or spreadsheet application should be able to intuitively understand the contents of the file's structured metadata header and comma-separated data table.</li>
<li><strong>Easy for machines to parse and generate</strong>. The file should be very easy to parse and validate with the wide variety of software tools used by scientists.</li>
<li><strong>Group results into a single data array</strong> similar to how scientists most commonly view their data, but also conforming to the metadata requirements of an <a href="https://github.com/ODM2/ODM2">ODM2</a> <a href="https://github.com/ODM2/ODM2/blob/master/doc/ODM2Docs/core_datasets.md">Dataset</a>.</li>
<li><strong>Serve as a self-describing archival file format</strong> that is readily accepted by earth and environmental science data repositories, such as <a href="http://www.earthchem.org/library">IEDA EarthChem Library</a> or <a href="https://knb.ecoinformatics.org/">Knowledge Network for Biocomplexity (KNB)</a></li>
</ul>
<p><strong>This initial release</strong> is about 2 years overdue, as there are several components of this repository that are functional and have been well-tested. These release notes point to those files, and describe what work that is still in progress.</p>
<p>Although active development of <a href="ended in 2017, there is still a clear need for a human-readable, machine-parseable, text-based data exchange and data archiving format for an [ODM2](https://github.com/ODM2/ODM2">YODA-File</a> <a href="https://github.com/ODM2/ODM2/blob/master/doc/ODM2Docs/core_datasets.md">Dataset</a> data array, and easy-to-use <a href="https://github.com/ODM2/YODA-File/tree/master/excel_templates">Excel Templates for creating a YODA-File</a>, as we originally envisioned. There is strong interest by the ODM2 team to pick this work back up once additional funding is secured.</p>
<p><strong>YODA Profiles</strong></p>
<ul>
<li>The concept of a <a href="https://github.com/ODM2/YODA-File/blob/master/doc/YODA_profiles.md#yoda-profiles">YODA Profile</a> as the <em>expectations</em> and <em>constraints</em> within the defining data array block, is a powerful concept for defining any dataset.</li>
<li>Three YODA Profiles have been defined:
<ul>
<li><a href="https://github.com/ODM2/YODA-File/blob/master/doc/YODA_profiles.md#time-series">Time Series</a></li>
<li><a href="https://github.com/ODM2/YODA-File/blob/master/doc/YODA_profiles.md#specimen-time-series">Specimen Time Series</a></li>
<li><a href="https://github.com/ODM2/YODA-File/blob/master/doc/YODA_profiles.md#specimens-under-development">Specimens</a></li>
</ul>
</li>
</ul>
<p><strong>Tested Excel Templates & Example Files</strong></p>
<ul>
<li>YODA Time Series profile Excel templates:
<ul>
<li>Blank template: <a href="https://github.com/ODM2/YODA-File/raw/master/excel_templates/time_series/YODA_TimeSeries_Template_0.3.3-alpha.xlsm">YODA_TimeSeries_Template_0.3.3-alpha.xlsm</a></li>
<li>Example: <a href="https://github.com/ODM2/YODA-File/raw/master/examples/time_series/v0.3.3/YODA_v0.3.3_TS_climate(wHeaders">YODA_v0.3.3_TS_climate.wHeaders.xlsm</a>.xlsm) + <a href="https://github.com/ODM2/YODA-File/tree/master/examples/time_series">Example/ReadMe</a></li>
</ul>
</li>
<li>YODA Specimen Time Series profile Excel templates:
<ul>
<li>Blank template: <a href="https://github.com/ODM2/YODA-File/raw/master/excel_templates/specimen_time_series/YODA_SpecimenTimeSeries_Template_0.3.1-alpha.xlsx">YODA_SpecimenTimeSeries_Template_0.3.1-alpha.xlsx</a></li>
<li>Example: <a href="https://github.com/ODM2/YODA-File/tree/master/examples/specimen_time_series">YODA_SpecimenTimeSeries_Template_0.3.1-alpha_LR_example.xlsx](https://github.com/ODM2/YODA-File/raw/master/examples/specimen_time_series/v0.3/YODA_SpecimenTimeSeries_Template_0.3-alpha_LR_example.xlsm) + Example/ReadMe</a></li>
</ul>
</li>
</ul>
<p><strong>Work in Progress</strong></p>
<ul>
<li>YODA Specimens profile Excel templates:
<ul>
<li>An example <a href="https://github.com/ODM2/YODA-File/raw/master/examples/prototypes/YODA_Specimens_Template_0.3.2-alpha-Example1-Fisher-Cores.xlsm">YODA_Specimens_Template_0.3.2-alpha-Example1-Fisher-Cores.xlsm</a> has been developed and is functional, with the exception that a corresponding <a href="https://github.com/ODM2/YODA-Tools">YODA-Tools</a> Python code has not been developed to automatically parse this file to a YODA file or into ODM2.</li>
<li>A manually mocked-up for this example is at <a href="https://github.com/ODM2/YODA-File/blob/master/examples/prototypes/YODA_Specimens_Template_0.3.2-alpha-Example1-Fisher-Cores-YODAmockup.yaml">YODA_Specimens_Template_0.3.2-alpha-Example1-Fisher-Cores-YODAmockup.yaml</a></li>
</ul>
</li>
</ul>
Kraichnan-Leith-Batchelor similarity theory and two-dimensional inverse cascades
No full textWe study the scaling properties and Kraichnan-Leith-Batchelor (KLB) theory of forced inverse cascades in generalized two-dimensional (2D) fluids (-turbulence models) simulated at resolution . We consider (surface quasigeostrophic flow), (2D vorticity dynamics) and . The forcing scale is well-resolved, a direct cascade is present and there is no large-scale dissipation. Coherent vortices spanning a range of sizes, most larger than the forcing scale, are present for both and . The active scalar field for contains comparatively few and small vortices. The energy spectral slopes in the inverse cascade are steeper than the KLB prediction in all three systems. Since we stop the simulations well before the cascades have reached the domain scale, vortex formation and spectral steepening are not due to condensation effects; nor are they caused by large-scale dissipation, which is absent. One- and two-point pdfs, hyperflatness factors and structure functions indicate that the inverse cascades are intermittent and non-Gaussian over much of the inertial range for and , while the inverse cascade is much closer to Gaussian and non-intermittent. For the steep spectrum is close to that associated with enstrophy equipartition. Continuous wavelet analysis shows approximate KLB scaling () and () in the interstitial regions between the coherent vortices. Our results demonstrate that coherent vortex formation ( and ) and non-realizability () cause 2D inverse cascades to deviate from the KLB predictions, but that the flow between the vortices exhibits KLB scaling and non-intermittent statistics for and . The results will appear in \cite{BurgessEA2015}, which has been accepted to the \emph{Journal of Fluid Mechanics}
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