114,882 research outputs found
William (Bill) Peterson's contributions to ocean science, management, and policy
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Schwing, F. B., Sissenwine, M. J., Batchelder, H., Dam, H. G., Gomez-Gutierrez, J., Keister, J. E., Liu, H., & Peterson, J. O. William (Bill) Peterson's contributions to ocean science, management, and policy. Progress in Oceanography, 182, (2020): 102241, doi:10.1016/j.pocean.2019.102241.In addition to being an esteemed marine ecologist and oceanographer, William T. (Bill) Peterson was a dedicated public servant, a leader in the ocean science community, and a mentor to a generation of scientists. Bill recognized the importance of applied science and the need for integrated “big science” programs to advance our understanding of ecosystems and to guide their management. As the first US GLOBEC program manager, he was pivotal in transitioning the concept of understanding how climate change impacts marine ecosystems to an operational national research program. The scientific insight and knowledge generated by US GLOBEC informed and advanced the ecosystem-based management approaches now being implemented for fishery management in the US. Bill held significant leadership roles in numerous international efforts to understand global and regional ecological processes, and organized and chaired a number of influential scientific conferences and their proceedings. He was passionate about working with and training young researchers. Bill’s academic affiliations, notably at Stony Brook and Oregon State Universities, enabled him to advise, train, and mentor a host of students, post-doctoral researchers, and laboratory technicians. Under his collegial guidance they became critical independent thinkers and diligent investigators. His former students and colleagues carry on Bill Peterson’s legacy of research that helps us understand marine ecosystems and informs more effective resource stewardship and conservation
Showcasing health psychology postgraduate research: contemporary theory and methods
This article describes a conference workshop organised by the author which showcased the breadth of current postgraduate research within the area of Health Psychology
Filtenna Integration Achieving Ideal Chebyshev Return Losses
This paper demonstrates that it is possible to find an ideal filter response (Chebyshew, Butterworth,..) considering the antenna as the last resonator of a filter under certain circumstances related with the antenna performance and the bandwidth of the filtenna device. If these circumstances are not accomplished, we can achieve excellent performance as well, by means of an iterative process the goal of which is defined by either a filter mask or a classical filter function itself. The methodology is based on the conventional coupling matrix technique for filter design and has been validated by fabricating a microstrip prototype using hairpin resonators and a rectangular patch antenna
Deduction modulo theory
This paper is a survey on Deduction modulo theor
The education of Walter Kohn and the creation of density functional theory
The theoretical solid-state physicist Walter Kohn was awarded one-half of the
1998 Nobel Prize in Chemistry for his mid-1960's creation of an approach to the
many-particle problem in quantum mechanics called density functional theory
(DFT). In its exact form, DFT establishes that the total charge density of any
system of electrons and nuclei provides all the information needed for a
complete description of that system. This was a breakthrough for the study of
atoms, molecules, gases, liquids, and solids. Before DFT, it was thought that
only the vastly more complicated many-electron wave function was needed for a
complete description of such systems. Today, fifty years after its
introduction, DFT (in one of its approximate forms) is the method of choice
used by most scientists to calculate the physical properties of materials of
all kinds. In this paper, I present a biographical essay of Kohn's educational
experiences and professional career up to and including the creation of DFT
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