Latest JEI Research Papers

  • Thumbnail image from paper Is Cloud Cover One of the Effects of Climate Change?

    Is Cloud Cover One of the Effects of Climate Change?

    Author:
    Daniel Crair, Kelsey Peeples, and Dr. Suzanne Banas

    Climate change is one of the most controversial challenges humans face. Here the authors investigate the dual role of clouds - to reflect incoming light away from the Earth and to reflect heat energy back toward the Earth's surface. They find that the amount of incident light energy and surface temperature decreases as the sky becomes cloudier. These results will inform longer-term studies that may compare against the amount of energy clouds reflect back toward the Earth.

  • Thumbnail image from paper A Simple Printing Solution to Aid Deficit Reduction

    A Simple Printing Solution to Aid Deficit Reduction

    Author:
    Suvir Mirchandani and Peter Pinko
    Focus:

    The printing-related expenditure that is budgeted in 2014 for U.S. Federal agencies is $1.8 billion. A sample of five publically available documents produced by various federal agencies is analyzed and the cost savings arising from a change in font type are estimated. The analysis predicts that the Government’s annual savings by switching to Garamond are likely to be about $234 million with worst-case savings of $62 million and best-case savings of $394 million. Indirect benefits arising from a less detrimental impact on the environment due to lower ink production and disposal volumes are not included in these estimates. Times New Roman is not as efficient as Garamond, and the third federally-recommended font, Century Gothic, is actually worse on average than the fonts used in the sample documents.

  • Thumbnail image from paper The effect of font type on a school’s ink cost

    The effect of font type on a school’s ink cost

    Author:
    Suvir Mirchandani and Peter Pinko
    Focus:

    Your choice of font can impact more than style. Here the authors demonstrate that font choice can affect the amount of ink a given print-out requires. The authors estimate that a switch to Garamond font, size 12, by all teachers in his school district would save almost $21,000 annually.

  • Thumbnail image from paper The Development and Maximization of a Novel Photosynthetic Microbial Fuel Cell Using <em>Rhodospirillum rubrum</em>

    The Development and Maximization of a Novel Photosynthetic Microbial Fuel Cell Using Rhodospirillum rubrum

    Author:
    Marcus V. Gomez*(1), Gavin Mai*(1), Tammy Greenwood (2), John P. Mullins (2)

    Microbial fuel cells (MFCs) are bio-electrochemical systems that utilize bacteria and are promising forms of alternative energy. Similar to chemical fuel cells, MFCs employ both an anode (accepts electrons) and a cathode (donates electrons), but in these devices the live bacteria donate the electrons necessary for current. In this study, the authors assess the functionality of a photosynthetic MFC that utilizes a purple non-sulfur bacterium. The MFC prototype they constructed was found to function over a range of environmental conditions, suggesting its potential use in industrial models.

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