377,420 research outputs found

    Analysis of cosmic ray variations observed by the CARPET in association with solar flares in 2011-2012

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    The CARPET cosmic ray detector was installed on April 2006 at CASLEO (Complejo Astronmico El Leoncito) at the Argentinean Andes (31.8S, 69.3W, 2550 m, Rc=9.65 GV). This instrument was developed within an international cooperation between the Lebedev Physical Institute RAS (LPI; Russia), the Centro de Radio Astronomia e Astrofsica Mackenzie (CRAAM; Brazil) and the Complejo Astronmico el Leoncito (CASLEO; Argentina). In this paper we present results of analysis of cosmic ray variations recorded by the CARPET during increased solar flare activity in 2011-2012. Available solar and interplanetary medium observational data obtained onboard GOES, FERMI, ISS, as well as cosmic ray measurements by ground-based neutron monitor network were also used in the present analysis.Fil: Makhmutov, V.. Lebedev Physical Institute; Rusia. Universidade Presbiteriana Mackenzie; BrasilFil: Raulin, J. P.. Universidade Presbiteriana Mackenzie; BrasilFil: De Mendonca, R. R. S.. National Institute for Space Research; BrasilFil: Bazilevskaya, G. A.. Lebedev Physical Institute; RusiaFil: Correia, E.. Universidade Presbiteriana Mackenzie; Brasil. National Institute for Space Research; BrasilFil: Kaufmann, Pierre. Universidade Presbiteriana Mackenzie; BrasilFil: Marun, Adolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; ArgentinaFil: Fernandez, German Enzo Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; ArgentinaFil: Echer, E.. National Institute for Space Research; Brasi

    Review Essay: Adventures in Financeland

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    An Engine, Not a Camera: How Financial Models Shape Markets by Donald MacKenzie. Cambridge, MA, MIT Press, 2006, ISBN 0262134608. Pages: 377. 25.95 (hbk) Out of the Pits: Traders and Technology from Chicago to London by Caitlin Zaloom. Chicago, IL, University of Chicago Press, 2006. ISBN 0226978133. Pages: 224. 18.50 (hbk) Do Economists Make Markets? On the Performativity of Economics by Donald MacKenzie, Fabian Muniesa and Lucia Siu. Princeton, NJ, Princeton University Press, 2007. ISBN 0691130163. Pages: 373. 35.00 (hbk

    Book Review: \u3cem\u3eHindu Perspectives on Evolution: Darwin, Dharma, and Design\u3c/em\u3e

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    A review of Hindu Perspectives on Evolution: Darwin, Dharma, and Design by C. Mackenzie Brown

    Beyond the Band of Brothers: The US Military and the Myth that Women Can’t Fight (Book Review) by Megan MacKenzie

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    Review of Beyond the Band of Brothers: The US Military and the Myth that Women Can’t Fight by Megan MacKenzie

    Benefits of the Southcentral Rail Extension to the Municipality of Anchorage

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    The proposed Southcentral rail extension to Port MacKenzie is likely to generate significant economic benefits for the residents of Anchorage. These benefits are due to a combination of reduced transport costs, the ability to ship bulk commodities over shorter distances, and economical access to industrial land. We considered and analyzed these benefits under a set of assumptions about job creation, transportation costs, land use considerations and future mineral development. Our major findings include the following: Jobs • Port MacKenzie. The rail extension will generate new jobs for Anchorage workers by stimulating industrial development and jobs at Port MacKenzie. Under a base case scenario with a rail extension and ferry service, Anchorage residents would gain 730 average annual jobs and 50millionofannualincomeduringtheperiodof20132017fromindustrialdevelopmentatPortMacKenzie.Hundredsmorejobswouldbegainedafter2017.Therailextensionwillplayanimportantroleinthisprocess.Forexample,itwillallowcoalexportsthroughtheportasearlyas2013,generatingmorethan100jobs.NewMines.Majornewminesshippingconcentrateviatherailextensionwouldgeneratethousandsofnewjobs,andasignificantfractionofthesejobswouldbeheldbyAnchorageresidents.Ourdetailedanalysisofthepotentialemploymentfromfivespecificminingprojectsindicatesthatmorethan2,000averageannualjobswouldbecreatedinAnchorageorheldbyAnchorageresidentsoncetheminesarefullydeveloped.Mostofthesejobswouldbeinminingandinprofessionalsectorsthatpaygoodwages.Also,duringinitialminedevelopment,manyofthejobswouldbeinconstructionandfabrication.RailConstruction.Theconstructionoftherailextensionwouldgenerateupto3,000totaljobs,andongoingoperationswouldgenerateupto150totaljobs.ItislikelythatmanyofthesejobswouldbeheldbyAnchorageresidents.StateRevenues.StateminingtaxesgeneratedfromnewmineswillboosttheAnchorageeconomy.Estimatedtaxrevenuesandroyaltieswouldgrowsteadily,reaching50 million of annual income during the period of 2013 -2017 from industrial development at Port MacKenzie. Hundreds more jobs would be gained after 2017. The rail extension will play an important role in this process. For example, it will allow coal exports through the port as early as 2013, generating more than 100 jobs. • New Mines. Major new mines shipping concentrate via the rail extension would generate thousands of new jobs, and a significant fraction of these jobs would be held by Anchorage residents. Our detailed analysis of the potential employment from five specific mining projects indicates that more than 2,000 average annual jobs would be created in Anchorage or held by Anchorage residents once the mines are fully developed. Most of these jobs would be in mining and in professional sectors that pay good wages. Also, during initial mine development, many of the jobs would be in construction and fabrication. • Rail Construction. The construction of the rail extension would generate up to 3,000 total jobs, and ongoing operations would generate up to 150 total jobs. It is likely that many of these jobs would be held by Anchorage residents. • State Revenues. State mining taxes generated from new mines will boost the Anchorage economy. Estimated tax revenues and royalties would grow steadily, reaching 267 million per year by 2040. A large share of these potential tax revenues, roughly proportional to Anchorage’s share of state population, would likely flow into the Anchorage economy, sustaining hundreds of direct jobs and reducing property tax burdens that would otherwise stifle private sector job creation. Regional Competitiveness • New Economic Opportunities. Port MacKenzie and the rail extension, operating together, are a significant new strategic asset for the entire regional economy. This infrastructure will create expanded opportunities for mineral, timber, and energy resource development, and the export of bulk commodities by rail through Port MacKenzie constitutes a new economic sector for the Southcentral regional economy. As the region’s commercial and financial hub, Anchorage will gain jobs and income from all of this activity. • More Efficient Land Use. The rail extension allows for higher-valued use of land in Anchorage. The rail extension will allow for railroad-dependent industrial development to take place at Port MacKenzie. This development would allow limited existing industrialzoned land throughout Anchorage to be used for other, higher-value uses such as commercial development, while still meeting the regional economy’s need for industrial land. Fiscal Benefits • New State Revenues. As noted above, revenues to the State of Alaska from new resource development would grow steadily, reaching $267 million per year by 2040. These revenues will reduce the need for other taxes, stimulating capital formation and job creation by the private sector. • Higher Local Tax Base. Local governments will also see higher tax revenues from a higher-valued property tax base. The stimulated new development will increase the tax base and reduce the need to raise taxes on homeowners or existing businesses. Other Benefits • Port of Anchorage. The industrial and mineral development stimulated by the rail extension to Port MacKenzie will likely increase both the volume and the value of cargo going through the Port of Anchorage. For example, if large mines are developed, the goods and equipment used by the mines for development and operations will flow through Anchorage. • Rail Shipping Costs. The unit cost of shipping on the Alaska Railroad is likely to fall as fixed costs of roadbed maintenance and administration are spread over a higher volume of shipments.Matanuska - Susitna Borough Economic Development DepartmentIntroduction / Two Municipalities, One Regional Economy / Overview of Potential Benefits to Anchorage from the Rail Extension / Benefits from Construction and Operation of the Rail Extension / Benefits from Industrial Development at Port MacKenzie / Benefits from Employment of Anchorage Residents due to Railroad-Dependent Mineral Development / Appendix: Notes on Methodolog

    The World from a Different Angle

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    Mackenzie Fraser ’17 expanded her view of the world when she served as a translator for a medical mission team and backpacked the Camino Inka in Peru over the summer

    No-till Forage Establishment in Alaska

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    We assessed the effectiveness of no-till forage establishment at six Alaska locations: Anchor Point, Sterling, Point MacKenzie, Palmer, Delta Junction, and Fairbanks. Directly seeding grass into established grass stands generally did not improve forage yields or quality. Seeding rate had little effect on establishment of newly seeded forages in no-till. Grass yields were depressed when companion crop yields were high, and they typically did not recover in subsequent years. Red clover established well, producing high yields of good quality forage under no-till at Point MacKenzie, but established poorly at Anchor Point and Delta Junction. These results indicated that no-till seeding of most forage crops into declining grass stands is not likely to be successful in Alaska with current available technology

    QQ-Manifolds and Mackenzie Theory

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    Double Lie algebroids were discovered by Kirill Mackenzie from the study of double Lie groupoids and were defined in terms of rather complicated conditions making use of duality theory for Lie algebroids and double vector bundles. In this paper we establish a simple alternative characterization of double Lie algebroids in a supermanifold language. Namely, we show that a double Lie algebroid in Mackenzie's sense is equivalent to a double vector bundle endowed with a pair of commuting homological vector fields of appropriate weights. Our approach helps to simplify and elucidate Mackenzie's original definition; we show how it fits into a bigger picture of equivalent structures on `neighbor' double vector bundles. It also opens ways for extending the theory to multiple Lie algebroids, which we introduce here.Comment: This is a substantial re-work of our earlier paper arXiv:math.DG/0608111. In particular, we included various details as well as some new statements that may have independent interes
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