• The Effect of Delivery Method, Speaker Demographics, and Physical Environment on the Engagement Level of Older Adults
    Author:
    Josh Seides and Tracy Mitzner

    24 May 2015 3:19 PM |

    With an increasing older adult population and rapid advancements in technology, it is important that senior citizens learn to use new technologies to remain active in society. A variety of factors on learning were investigated through surveys of senior citizens. Older adults preferred an interactive lesson style, which also seemed to help them retain more course material.

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  • Ant colony optimization algorithms with multiple simulated colonies offer potential advantages for solving the traveling salesman problem and, by extension, other optimization problems
    Author:
    M. Evan Wildenhain and Ian Sacco
    Focus:
    , , ,

    22 May 2015 1:51 PM |

    Ant colony optimization algorithms simulate ants moving from point to point on a graph and coordinate their actions, similar to ants laying down pheromones to strengthen a path as it is used more frequently. These ACO algorithms can be applied to the classic traveling salesman problem, which aims to determine the lowest-cost path through a given set of points on a graph. In this study, a novel multiple-colony system was developed that uses multiple simulated ant colonies to generate improved solutions to the traveling salesman problem.

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  • The Analysis of the Effects of Smoke and Water Vapor on Insect Pheromone Communication and Physical Condition: An Investigation of the Causes of Colony Collapse Disorder
    Author:
    Orvill Delatorre and Ann Lambert

    20 May 2015 3:15 PM |

    The cause of insect colony collapse disorder (CCD) is still a mystery. In this study, the authors aimed to test the effects of two environmental factors, water vapor and smoke levels, on the social behavior and physical condition of insects. Their findings could help shed light on how changing environmental factors can contribute to CCD.

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  • The Effect of Positive and Negative Reinforcement on Sixth Graders’ Mental Math Performance
    Author:
    Tess M. Greene (1) and Amber Todd (2)
    Focus:
    , , ,

    20 May 2015 2:51 PM |

    What type of motivation is more effective: reward or punishment? In this study, the authors assess the effects of positive or negative on the math scores of sixth graders.

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  • The Effect of Various Liquid Mediums on the Transport of Photonic Energy and its Impact on the Quantum Efficiency of Photovoltaic Cells
    Author:
    Syamantak Payra and Susan Long
    Focus:
    , , , ,

    05 May 2015 9:26 AM |

    A photovoltaic cell (PV cell), or solar cell, converts the energy of light into electricity and is the basis for solar power. In order to increase the efficiency of PV cells, the authors in this study used common household items as photon transmissions mediums and measured their effects on the temperature and voltage output of the PV cells.

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