1. Comunidade Cidadã 2009 - Embu

    13:50

    from producaoiee Added 108 0 0

    + More details
    • Semana Cultural 2003 | Heliópolis

      07:40

      from producaoiee Added 108 0 0

      + More details
      • Download Driver 'ieecbprt01'

        01:32

        from IT Services IEE Added 7 0 0

        Downlaod Driver for ieecbprt01

        + More details
        • IEE/CEEM Seminar: Dave Auston and The Changing Energy Landscape

          01:14:23

          from Institute for Energy Efficiency Added 46 0 0

          David Auston Executive Director, Institute for Energy Efficiency UC Santa Barbara The Changing Energy Landscape – A Summary of Key Issues and Trends October 30, 2013 | 4:00pm | Bren Hall 1414 Faculty Host: Sangwon Suh Abstract: Drawing from numerous sources, this tutorial will summarize some of the more important recent developments in the field of energy and project current trends forward to develop some (hopefully) plausible scenarios for what might arise during the next few decades. Some key questions that will be addressed are: Is shale gas an energy bonanza, an environmental hazard, or both? Will it sideline renewables and electric vehicles? Will it displace coal? Will solar become price competitive without subsidies, and if so when? Will the cost and capacity of energy storage technology advance to a level where it can be used to stabilize the insertion of substantial renewables into the electric grid, and will it enable widespread deployment of electric vehicles? Can we realistically expect to meet energy consumption and greenhouse gas emission targets for 2030 and 2050? Obviously neither I nor anyone can provide definitive answers to these questions — the intent of this tutorial is simply to surface some of the key factors and generate a discussion that will hopefully illuminate a very complex and changing set of issues pertaining to our energy future. Biography: David Auston is Executive Director of the Institute for Energy Efficiency and Executive Director of the Center for Energy Efficient Materials, at UC Santa Barbara. Prior to joining UC Santa Barbara, he was President of the Kavli Foundation. He has been a member of the technical staff and department head at AT&T’s Bell Laboratories (now Lucent Technologies), Professor of Electrical Engineering and Applied Physics and Dean of the School of Engineering and Applied Science at Columbia University, Provost of Rice University, and President of Case Western Reserve University. Auston has contributed to research in the fields of lasers, nonlinear optics, and solid-state materials. He is a member of the National Academy of Sciences, the National Academy of Engineering, and a Fellow of the American Academy of Arts and Sciences, the Institute of Electrical and Electronic Engineers, the Optical Society of America, and the American Physical Society. A native of Toronto, Canada, Auston earned bachelors and masters degrees in engineering physics and electrical engineering from the University of Toronto and a Ph.D. in electrical engineering from the University of California, Berkeley.

          + More details
          • Sobre la imposición de consejeros electorales y el agandalle panista.

            02:08

            from Javier Lamarque Added 0 0 0

            Comentarios Javier Lamarque

            + More details
            • Trends in Special Education & School-Based Therapy

              02:02

              from MJ Care Added 102 0 0

              Carlynn Higbie, OTR/L and MJ Care School Therapy Consultant discusses the latest trends in special education and school-based therapy, and how our consulting services can keep your district ahead of the curve.

              + More details
              • Caravana do Esporte | Promo 2008

                06:08

                from producaoiee Added 370 0 0

                + More details
                • IEE/CEEM 2012-13 Seminar Series: Jia Zhu

                  58:23

                  from Institute for Energy Efficiency Added 143 0 0

                  Jia Zhu Postdoctoral Scholar, Department of Electrical Engineering University of California, Berkeley Nanostructured Energy Devices: Phonons, Electrons and Photons on the Nanoscale November 28, 2012 | 4:00pm | ESB 2001 Abstract Supplying the world with sustainable energy is one of the most pressing issues in modern society. Dramatically improved control over heat, electricity and solar energy is essential to create a new energy paradigm. Nanomaterials with carefully tailored properties (such as interface, geometry) can be used to manipulate the flow of phonons, electrons and photons, to enable novel energy devices in an unconventional manner. In this talk, I will present three examples of nanostructure-enabled energy devices. As a significant amount of energy is consumed worldwide just for controlling heat flows, advanced thermal power devices for self-control heat flow are very desirable, but significantly underdeveloped. Here I will present the world’s first switchable thermal rectifier, a three terminal nonlinear device for advanced thermal control. It opens the door for a variety of applications, including on-chip cooling, building efficiency, and thermal energy storage. Photon management, involving both absorption enhancement and reflection reduction, is critical to all photovoltaic devices. Here I will demonstrate a novel nanodome solar cell structure with an efficient photon management design. Two types of photovoltaic devices, amorphous silicon and dye sensitized solar cells, are used to demonstrate the concept. They both achieve the highest short circuit current, and state of art conversion efficiency. More strikingly, the design and process is not in principle limited to any specific material system, hence it opens up exciting opportunities for all classes of photovoltaic devices. PbSe nanocrystals have shown a greatly enhanced multi exciton generation (MEG) effect, one important step toward third generation solar cells. However, it is difficult to extract generated carriers from nanocrystals without good transport pathways. I will report interesting PbSe hyperbranched and chiral branched nanowires, promising structures for enhancing the MEG effect, light absorption, and carrier collection. More excitingly, chiral branched nanowires reveal a new nanowire growth mechanism, dislocation driven growth, which can be applied to a variety of materials.

                  + More details

                  What are Tags?

                  Tags

                  Tags are keywords that describe videos. For example, a video of your Hawaiian vacation might be tagged with "Hawaii," "beach," "surfing," and "sunburn."