To run one program with a different time zone setting, set the TZ environment variable, e.g. run TZ=Pacific/Kiritimati date to see what time it is on Christmas Island, or export TZ=Pacific/Kiritimati to have the setting last for a shell session.
Ham radio operation at 10 GHz is far removed from global shortwave communication typically operating below 30 MHz. The motivation for designing the evanescent mode circular waveguide 10 GHz filter sprang from a desire to extend ham radio operation to 10 GHz. This application note describes the design of two 10 GHz filters and is a follow up to a previous article published in Microwave Product Digest1 describing the design of a 10 GHz low-noise amplifier (LNA). Both are key components needed for ham radio station operation at 10 GHz.
AWR Design Environment 10.04
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NI AWR Design Environment, specifically Microwave Office circuit design software, was used to design the filters for a range of bandwidths up to five percent. The ability of the software to optimize the design while simultaneously accounting for resonator spacing, insertion loss, and return loss, was powerful.
Before any hardware could be tested, measurement capability needed to be extended to 10 GHz. Available equipment included a vector network analyzer (VNA), spectrum analyzer, and service monitor, which provided metrology through L-band, but did not support 10 GHz measurement capability. The designer decided to build a synchronous up/down conversion test set to extend the bench equipment to 10 GHz.
The use of immittance inverters enables reuse of the same type of resonator in an overall bandpass filter design, as illustrated in Figure 6. For example, combline filters can be viewed as cascades of shunt resonators and admittance inverters, where the inter-resonator coupling is set by the particular admittance of the inverter between a pair of resonators. Filters with the same input and output port impedances are usually symmetric. This is shown in Figure 6. This property can be used to simplify the design parameters.
The preceding paragraphs provide a procedure for analyzing a length of circular waveguide operating below cutoff. To design a filter in this media, the designer could start from LP prototype tables, perform an LP to BP transformation, and map the series resonators (see Figure 4) into shunt resonators cascaded with inverters. This is the classic approach found in Craven5 and in Howard6 and often involves some iterative optimization.
Another approach might be to fully describe a physical filter with inter-resonator lengths and tuning capacitors as variables in a circuit analysis environment and simply use optimization to obtain a solution. This is a somewhat forceful approach and might not yield an optimum solution.
The measured passband is 10.18 GHz to 10.48 GHz with nominal insertion loss of 2.9 dB and ripple less than 1 dB peak. This 300 MHz BW was obtained from a three percent BW design. The 40 dB BW is 720 MHz, as shown in Figure 19.
As the design of Google search results pages (SERPs) changes, so does the flow of attention. When Google starts showing a shiny big video carousel for a keyword, for example, fewer clicks go to regular search results.
Since this was a pilot study, a sample size calculation was not performed (Eldridge et al., 2016). In order to get an accurate estimate of the SD of the outcome measure for the main trial, we followed the recommendations of Whitehead et al. (2016) who proposed sample sizes of 25 per intervention arm for small standardized effect sizes (d = 0.2) for a main trial designed with 90% power and two-sided 5% significance. Therefore, we aimed to get a pilot trial total sample size of about N = 50 participants.
Autism Spectrum Disorder can be seen as a cluster of strengths and weaknesses with the characteristic of high diversity. Children with ASD show a specific way to communicate and interact with other people. The behavior problems of children with ASD regularly arise in the interaction with their environment and with neurotypical people, e.g., in families. Often, parents have problems in understanding their autistic children and in reacting appropriately. This, in turn, can be stressful for the children with ASD, and in consequence, the children show more challenging behavior, e.g., aggressive behavior, but also less social communication behavior or less social motivation with social withdrawal and more repetitive behavior.
For a future RCT trial, it will be crucial to find appropriate measurements to assess (1) social communication behavior of the child and quality life of the child, but as well, to measure (2) positive, empathic, and structuring parenting (3) and factors of an appropriate environment.
Baker et al. (2011a) mention that children with autism, like most children, are responsive to their family environment. In this line, changing the environment and family condition in providing a positive and low-arousal environment may be able to modify the communication and interaction abilities of children with ASD. There is evidence that providing a specific family environment that is suitable to the needs of the autistic child could be one important factor in contributing to a more positive social and psychological outcome (Howlin and Magiati, 2017). This study is a first attempt to address these factors.
Emanuel is known for his innovative scholarship on water, environmental justice and Indigenous rights. Before his Jannuary 2022 appointment at Duke, he led the Ecohydrology and Watershed Science Lab at North Carolina State University, where he was a University Faculty Scholar and professor in the Department of Forestry and Environmental Resources, and a faculty fellow at the Center for Geospatial Analytics.
Davis specializes in environmental history and sustainability studies, and is the Pulitzer Prize-winning author of The Gulf: The Making of an American Sea (2017). Davis was one of the recipients of the 2019 Andrew Carnegie fellowship award. His previous books include Race Against Time: Culture and Separation in Natchez Since 1930 (2001), winner of the Charles S. Sydnor Prize for the best book in southern history, and An Everglades Providence: Marjory Stoneman Douglas and the American Environmental Century (2009), which received a gold medal from the Florida Book Awards.
Each year the Willson Center for Humanities and Arts joins with the Environmental Ethics Certificate Program to co-sponsor a lecture to honor the late Eugene P. Odum. This year's lecture will be presented by Gary Nabhan, a scholar of conservation and environmental themes, particularly with respect to food. He is a prolific writer, having authored or co-authored 28 books on diverse topics, many for popular audiences. He currently is the W.K. Kellogg Endowed Chair in Sustainable Food Systems at the University of Arizona's Southwest Center.rn Nabhan's lecture will focus on the June 2016 Bioscience cover story exploring the emergent properties and creative tensions among ?three sciences? in documenting and protecting landscape-level biodiversity in culturally-influenced terrestrial and marine habitats. It will highlight twenty years of success in community-based projects with the Seri or Comcaac community in the Sea of Cortez region of Mexico. rn
Brian Orland holds degrees in Architecture (Manchester), and in Landscape Architecture (Arizona). He joined the University of Georgia for Fall 2015 as the Rado Family Foundation /UGA Professor in GeoDesign. He has conducted pioneering work in several areas of computer visualization for landscape design and planning including visual simulation, virtual reality and serious games. Most of his recent work has related to land use change, water resources and energy development in Pennsylvania and the UK but he has also co-led a study abroad program in Tanzania, focused on community design for biodiversity conservation.
Tony Chackal is a Ph.D. candidate in philosophy and holder of the graduate certificate in Environmental Ethics. Abstract: Discourse in environmental aesthetics concerns how nature should be aesthetically appreciated. Underlying many environmental aesthetic theories is the nature/culture dualism. Accordingly, many argue that nature should be appreciated "on its own terms," not those of art (Carlson 2004; Saito 2004; Berleant 2004). While the nature/culture distinction can have pragmatic uses, the dualism is misleading and should be replaced with a continuum. When various senses of nature are mapped onto the continuum, the breadth of the cultural can be seen in nature. Varieties of knowledge, narrative, and experience of nature can be utilized for varieties of perception and aesthetic appreciation.
The release of Pope Francis's encyclical on the environment offers an opportunity to revisit the Judeo-Christian approach to environmental ethics. In the late 1960s, many environmental philosophers decried the standard interpretation of "subdue the Earth" as having led to widespread destruction of the environment. Fifty years later, how does this document change the story?
Award-winning writer and environmental activist Gary Ferguson.rnA reception and book-signing follows the talk.rnCo--sponsored by the UGA Environmental Ethics Certificate Program, the UGA Office of Sustainability, and the State Botanical Garden of Georgia
Join Professor Zygmunt Plater, Boston College Law School, for a discussion of a landmark case, TVA vs. Hill, better known as the "snail darter" case. This is the 2015 Odum Environmental Ethics Lecture. rnrnEven today, thirty years after the legal battles to save the endangered snail darter, the little fish that blocked completion of a TVA dam is still invoked as an icon of leftist extremism and governmental foolishness. In this eye-opening book, the lawyer who with his students fought and won the Supreme Court case known officially as Tennessee Valley Authority v. Hill tells the hidden story behind one of the nation's most significant environmental law battles.rnrnThe realities of the darters case, Plater asserts, have been consistently mischaracterized in politics and the media. This book offers a detailed account of the six-year crusade against a pork-barrel project that made no economic sense and was flawed from the start. In reality TVA's project was designed for recreation and real estate development. And at the heart of the little group fighting the project in the courts and Congress were family farmers trying to save their homes and farms, most of which were to be resold in a corporate land development scheme. Plater's gripping tale of citizens navigating the tangled corridors of national power stimulates important questions about our nations governance, and at last sets the snail darters record straight.rnrnA reception and book-signing will follow the talk. rnrnThe event is co-sponsored by the Environmental Ethics Certificate Program, the Willson Center for Humanities and arts, the Georgia Natural History Museum, the Center for Integrative Conservation Research, and the River Basin Center, Odum School of Ecology. 2ff7e9595c
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