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URSI-EMTS 2013

Plenary Talks

Plenary Talk 1

12:00-12:40, May 21, 2013
Meta-Electromagnetics and Meta-Optics
Prof. Nader Engheta
Department of Electrical and Systems Engineering,
University of Pennsylvania,
USA
Abstract
    Metamaterials and plasmonic optics have become exciting platforms for controlling and harnessing light and electrons in unprecedented ways. As these fields reach a certain level of development, new directions and novel vistas are appearing in the horizon. Balancing the simplicity with the complexity in metamaterials becomes one of the key issues, and consequently modularization, functionalization, and parameterization of metamaterials may be exploited for new functionalities and possibilities in such interesting platforms that may include nonlinearity, anisotropy, chirality, non-reciprocity, and non-locality. The new paradigm of “meta-electromagnetism” offers new and transformative grounds for innovation in the field of electromagnetics and optics. I will give an overview of some of our most recent results in this area and will forecast some future possibilities.

Profile
    Winner of the 2012 IEEE Electromagnetics Award, Nader Engheta is the H. Nedwill Ramsey Professor at the University of Pennsylvania with affiliations in the Departments of Electrical and Systems Engineering, Bioengineering, Physics and Astronomy, and Materials Science and Engineering. He received his B.S. degree from the University of Tehran, and his M.S and Ph.D. degrees from Caltech. Selected as one of the Scientific American Magazine 50 Leaders in Science and Technology in 2006 for developing the concept of optical lumped nanocircuits, he is a Guggenheim Fellow, an IEEE Third Millennium Medalist, a Fellow of IEEE, American Physical Society (APS), Optical Society of America (OSA), American Association for the Advancement of Science (AAAS), and of SPIE-The International Society for Optical Engineering, and the recipient of the 2013 Benjamin Franklin Key Award, the 2008 George H. Heilmeier Award for Excellence in Research, the Fulbright Naples Chair Award, NSF Presidential Young Investigator award, the UPS Foundation Distinguished Educator term Chair, and several teaching awards including the Christian F. and Mary R. Lindback Foundation Award, S. Reid Warren, Jr. Award and W. M. Keck Foundation Award. His current research activities span a broad range of areas including nanooptics and nanophotonics, metamaterials and plasmonics, graphene photonics, nonreciprocal nanophotonics, biologically-inspired sensing and imaging, miniaturized antennas and nanoantennas, physics and reverse-engineering of polarization vision in nature, mathematics of fractional operators, and physics of fields and waves phenomena. He has co-edited (with R. W. Ziolkowski) the book entitled “Metamaterials: Physics and Engineering Explorations” by Wiley-IEEE Press, 2006. He was the Chair of the Gordon Research Conference on Plasmonics in June 2012.

Plenary Talk 2

10:20-11:00, May 22, 2013
Assessment of Possible Health Risks of Electro-Magnetic Field Exposures due to Emerging Technologies
Prof. Masao Taki
Department of Electrical and Electronic Engineering,
Tokyo Metropolitan University,
Japan
Abstract
    Safety of human exposures to electromagnetic field (EMF) is recognized as an important factor in the development of technology using electromagnetic energy. Efforts have been devoted to researches to establish the scientific basis for human safety against the exposure to EMF for a long time, especially since the advent of International EMF Project organized by World Health Organization (WHO) in 1996. For all those efforts there still remains the uncertain risk that “radiofrequency electromagnetic fields are possibly carcinogenic” according to the evaluation by International Agency for Research on Cancer (IARC), a part of WHO. Nevertheless technologies using EMF are being developed quickly to cause electromagnetic environment more and more complex.
    This plenary talk will deal with two aspects of this issue. One is the uncertain risk due to the long-term exposure to weak EMF such as emission from mobile phones. Epidemiological studies will be discussed with the fruit to provide rationale for the evaluation on the carcinogenicity and its limitation. The other is the new issues related to the emerging technology. They include safety of millimeter and THz waves, and wireless power transfer technologies. Some practical challenges in the exposure assessment will also be discussed.

Profile
    Masao Taki was born in Tokyo in 1953. He received B.E, degree in electronic engineering from the University of Tokyo in 1976. He belonged to the Institute of Medical Electronics in the University of Tokyo as a graduate student and received M.E. and Ph.D. degrees in 1978 and 1981, respectively. In 1981 he joined Tokyo Metropolitan University, where he has been engaged in research and education in electrical engineering and he has been a Professor in the Department of Electrical and Electronic Engineering of Tokyo Metropolitan University since 1998.
    His research interests include biological effects of electromagnetic fields and electromagnetic dosimetry. He has been engaged in non-ionizing radiation protection including risk assessment and risk management. He chaired the working group for “Guidelines for Protection of Human Body from Exposure to Electromagnetic Waves” of the Ministry of Posts and Telecommunications from 1987 to 1990. He was a member of International Commission of Non-ionizing Radiation Protection (ICNIRP) from 1996 to 2008 and chaired the Standing Committee III (Physic and Engineering) of ICNIRP from 2000 to 2004.
    He has been engaged in various researches in the field of bio-electromagnetics, including research projects promoted by the Ministry of Internal Affairs and Communications (MIC). He was in charge of exposure assessment for epidemiological study on the association between brain tumor and mobile phone use, which was conducted as a part of international collaboration study of INTERPHONE.
    He has been involved in the activity of URSI since the establishment of URSI Commission K, “Electromagnetics in Biology and Medicine” in 1990. He currently serves as the Chair of Commission K.
    He is the Chair of the National Committee for IEC/TC106 “Methods for the assessment of electric, magnetic and electromagnetic fields associated with human exposure”. He is also the Chair of “Committee for Radio-wave Use and Environment” in MIC, where he also serves as the national delegate for CISPR. He is currently the Vice Chair/Chair-elected of IEICE Technical Committee on Electromagnetic Compatibility (EMCJ). He is a Fellow of IEICE.

Plenary Talk 3

11:05-11:45, May 22, 2013
Recent Advances in Evolutionary Optimization Techniques in Applied Electromagnetics
Prof. Yahya Rahmat-Samii
Electrical Engineering Department,
University of California Los Angeles,
USA
Abstract
    This presentation will focus on: (a) a tutorial introduction to GA, PSO and CMA-ES by describing in a novel fashion the underlying concepts and recent advances for those who have used these techniques and for those who have not had any experiences in these areas, (b) a unique approach in performing fundamental comparative studies among these algorithms, (c) demonstration of the potential applications of these algorithms to a variety of electromagnetic and antenna designs, and (d) assessment of the advantages and the limitations of these techniques.

    Broadly defining, optimization is the process of adjusting a set of pertinent input parameters to characterize a device, a mathematical process, or an experiment with the objective to finding the minimum or maximum desired output quantities. The input typically consists of parameters; the process or function is known as the cost function, objective function, or fitness function, and the output is the cost or fitness. There are clearly many different optimization methods applicable to variety of applications. Due to their unique properties as global optimization algorithms nature-inspired optimization techniques have been at the forefront of research within applied electromagnetic community. The ever increasing advances in computational power have additionally fueled this temptation. The well-known brute force design methodologies are systematically being replaced by the state-of-the-art Evolutionary Optimization (EO) techniques. In recent years, EO techniques are finding growing applications to the design of all kind of systems with increasing complexity. These algorithms are stochastic techniques which direct the optimizer towards the most likely position based on previously tested points. Some of the paramount features of these algorithms are: (i) Not requiring derivative, (ii) Continuous or discrete parameters, (iii) Suitable for parallel computers, (iv) Optimal global, and (v) Non-intuitive solutions.

    Among various EO’s, nature inspired techniques such as Genetic Algorithms (GA), Particle Swarm Optimization (PSO) and the Covariance Matrix Adaptation (CMA) Evolution Strategies (ES) have attracted considerable attention. GA utilizes an optimization methodology which allows a global search of the cost surface via the mechanism of the statistical random processes dictated by the Darwinian evolutionary concept (adaptation, selection, survivability and mutation). PSO is a robust stochastic evolutionary computation technique based on the movement and intelligence of swarms of bees looking for the most fertile feeding location applying their cognitive and social knowledge. The CMA-ES technique is based upon the evolution of a population of individuals, capitalizing on the ideas of survival of the fittest, recombination, and mutation, and this version of ES has only been recently introduced to the applied electromagnetic community. This algorithm has certain similarities in comparison to the standard Genetic Algorithms; however the selection and recombination operators have some key differences. In particular, the notion of average performance among the individuals is an important part of the evolution processes in this algorithm.

Profile
     Yahya Rahmat-Samii is a Distinguished Professor, holder of the Northrop-Grumman Chair in electromagnetics, member of the US National Academy of Engineering (NAE) and the former chairman of the Electrical Engineering Department at the University of California, Los Angeles (UCLA). He is also the winner of of the 2011 IEEE Electromagnetics Award. Before joining UCLA in 1989, he was a Senior Research Scientist at Caltech/NASA's Jet Propulsion Laboratory. Dr. Rahmat-Samii was the 1995 President of IEEE Antennas and Propagation Society, was appointed an IEEE Distinguished Lecturer presenting lectures internationally and served as the President of USNC-URSI 2009-2011. Dr. Rahmat-Samii was elected a Fellow of IEEE in 1985, a Fellow of IAE in 1986, a Fellow of AMTA in 2002 and a Fellow of ACES in 2012. Dr. Rahmat-Samii has authored and co-authored over 800 technical journal articles and conference papers and has written over 30 book chapters and four books entitled, Electromagnetic Optimization by Genetic Algorithms, Electromagnetic Band Gap Structures in Antenna Engineering, and Impedance Boundary Conditions in Electromagnetics and Implanted Antennas in Medical Wireless Communications. He is also the holder of several patents. His research contributions cover a diverse area of electromagnetics and antennas. Dr. Rahmat-Samii has received numerous awards, including the 1992 and 1995 Wheeler Best Application Prize Paper Award for his papers published in the IEEE Antennas and Propagation Transactions, 1999 University of Illinois ECE Distinguished Alumni Award, IEEE Third Millennium Medal, and AMTA’2000 Distinguished Achievement Award. In 2001, Rahmat-Samii was the recipient of an Honorary Doctorate in Physics from the University of Santiago de Compostela, Spain. In 2001, he was elected as a Foreign Member of the Royal Flemish Academy of Belgium for Science and the Arts. In 2002, he received the Technical Excellence Award from JPL and in 2005 he was the recipient of the URSI Booker Gold Medal. He is the recipient of the 2007 Chen-To Tai Distinguished Educator Award of the IEEE Antennas and Propagation Society and in the same year elected as Edmond S. Gillespie Fellow of Antenna Measurement Techniques Association. In 2009, he was selected to receive the IEEE Antennas and Propagation Society highest award, Distinguished Achievement Award, for his outstanding career contributions. He is the recipient of the 2010 UCLA School of Engineering Lockheed Martin Excellence in Teaching Award, and the 2011 UCLA Distinguished Teaching Award. Prof. Rahmat-Samii is the designer of the IEEE AP-S logo which is displayed on all IEEE AP-S publications.

Plenary Talk 4

12:00-12:40, May 23, 2013
No One Else Should Ever Suffer As We Did - Reconciliation, Diversity, Tolerance and the Better Angels of our Nature -
Prof. Tadatoshi Akiba
Hiroshima University, Japan
National Chair, AFS Japan
Chairman, Middle Powers Initiative
Abstract
    "No one else should ever suffer as we did." is the most important message we should remember about Hiroshima and Nagasaki. It is the philosophy of the survivors (hibakusha in Japanese) embodying the spirit of reconciliation, which becomes strikingly obvious when one realizes that “no one” literally means everyone, including those you would normally label as “enemies.” The fact that more than 5,000 cities round the world agreed to this statement and joined the organization Mayors for Peace means that it is also a message of cities.

    An essential ingredient for reconciliation is tolerance that allows one to accept the existence of values and people that are different from themselves. This is an indispensable feature of any city where a diverse group of people must live harmoniously to a large degree. Essential in this line of thought is to realize consciously the importance of the mundane daily lives of ordinary people, which often escape scientific and academic scrutiny partly because they are so ordinarily there in front of our own eyes.

    Richard Florida of Toronto University has shown that this tolerance is a catalyst that taps energy and strength from the diversity of cities accelerating those cities’ economic vibrancy.

    Steven Pinker, a Harvard psychologist, has shown that these forces that characterize cities have caused the world to become more peaceable over millennia and even within a relatively short span of time.

    Just as these cities lead the world’s economy, it is the cities and citizen base NGO’s that will lead the world toward a peaceful one without nuclear weapons. In the process we will also be creating a world whose future will be shaped more substantively by the majority opinions of the globe, which can be properly described as a form of paradigm shift from nation-state-based adversarial model of the world to city-based partnership model of the world that could foster global democracy effectively.

Profile
Born in Tokyo in 1942.

B.S and M.S. in mathematics: University of Tokyo
Ph.D. in mathematics: MIT

Taught at the State University of New York at Stony Brook, Tufts
University and Hiroshima Shudo University.

Created and managed the Hibakusha Travel Grant Program which invited
international journalists to Hiroshima and Nagasaki to help the world
understand the realities of the atomic bombings and the message of
hibakusha better.

Represented Hiroshima as a national Diet member from 1990 to 1999.
Elected Mayor of Hiroshima in 1999 and served three terms until 2011.

As President of Mayors for Peace, helped the organization grow from
around 440 members to approximately 5,000 during his tenure.

Notable improvements during his tenure include changes in fiscal health,
transparency, citizen service and youth violence. Also known for the
construction of a new baseball stadium and a bid to host the Olympic
Games.

Received such awards as the IPB Sean MacBride Award, the first Calgary
Peace Award, the Ramon Magsaysay Award (also known as the Asian Nobel
Prize), Jean Mayer Global Citizenship Award, the first Gautam Buddha
International Peace Award (from the government of Nepal) and the
Distinguished Peace Leadership Award from the Nuclear Age Peace Foundation.

Publications include The Pearl and the Cherry-tree (Asahi Shimbun).
Computers with faces (Computer Age), Reconciliation instead of
Retaliation (Iwanami Shoten),Hiroshima: A Thriving City (Kaimeisha) and
Mayor of Hiroshima (Asahi Shimbun). 

Plenary Talk 5

12:00-12:40, May 24, 2013
Recent Advances in Leaky-Wave Antennas
Prof. David R. Jackson
Department of Electrical and Computer Engineering,
University of Houston,
USA
Abstract
    Leaky-wave antennas (LWAs) use a traveling wave that radiates continuously along a guiding structure in order to produce a focused beam of radiation. Planar LWAs are particularly attractive since they are usually low prolife and easy to manufacture. This presentation will overview recent advances in LWAs, with the main focus on obtaining improved performance at broadside and at endfire.

    One of the main challenges has been to design LWAs to allow scanning through broadside, and an overview of different strategies for doing this will be summarized, including both metamaterial-inspired designs and other novel approaches. Results show that it is possible to scan through broadside using either a uniform, quasi-uniform, or periodic type of LWA, something that was not thought possible until fairly recently. Obtaining beams at broadside from a non-scanning leaky-wave antenna at a fixed frequency will also be addressed, and optimized design rules will be discussed. The interesting optical phenomenon of plasmonic directive beaming will then be mentioned, and this will be related to the design of leaky-wave antennas for broadside radiation. Finally, obtaining directive beams at endfire will be discussed, and a modified Hanson-Woodyard condition for optimizing the endfire directivity of a LWA will be presented.

Profile
    David R. Jackson was born in St. Louis, MO on March 28, 1957. He obtained the B.S.E.E. and M.S.E.E. degrees from the University of Missouri, Columbia, in 1979 and 1981, respectively, and the Ph.D. degree in electrical engineering from the University of California, Los Angeles, in 1985. From 1985 to 1991 he was an Assistant Professor in the Department of Electrical and Computer Engineering at the University of Houston, Houston, TX. From 1991 to 1998 he was an Associate Professor in the same department, and since 1998 he has been a Professor in this department. His present research interests include microstrip antennas and circuits, leaky-wave antennas, leakage and radiation effects in microwave integrated circuits, periodic structures, and electromagnetic compatibility and interference.

    He is a Fellow of the IEEE and is presently serving as the chair of the Distinguished Lecturer Committee of the IEEE AP-S Society, and as the Secretary of USNC (the U.S. National Committee of URSI, the International Union of Radio Science). He is also on the Editorial Board for the IEEE Transactions on Microwave Theory and Techniques.

    Previously, he has been the chair of the Transnational Committee for the IEEE AP-S Society, the Chapter Activities Coordinator for the AP-S Society, a Distinguished Lecturer for the AP-S Society, a member of the AdCom for the AP-S Society, and an Associate Editor for the IEEE Transactions on Antennas and Propagation. He previously served as the chair of the MTT-15 (Microwave Field Theory) Technical Committee. He has also served as the chair of Commission B of USNC-URSI and as the secretary of this commission. He also previously served as an Associate Editor for the Journal Radio Science and the International Journal of RF and Microwave Computer-Aided Engineering.