14 research outputs found
Design with Digital Tools: Using New Media Creatively
No full textNow, you can dive into all aspects of digital design confidently with this vital skill-building resource. Written by noted designer, educator, and author Mark von Wodtke, this new, perfectly timed book delivers ready-to-use professional guidance on the tools that are revolutionizing the design professions. It can help you and your design team use information technology more effectively and also help you engage your clients online. Use this book in your office, or in courses teaching design and the effective use of new media. With scores of examples, methods, strategies, and techniques, Mark von Wodtke hands you everything you need to work your way through 3-D prototyping, virtual reality environments, CAD programs, multimedia, and much more. In addition, you get hands-on help with the nuts-and-bolts of finding free information and images quickly, applying templates and applets, gaining access to detail, libraries, and smoothing workflow with management and collaborative tools
Renewal through regenerative design
No full textThe Department of Landscape Architecture at Cal Poly Pomona hosted a Regenerative Design Symposium “Building Sustainable Communities for the 21st Century” chaired by Takeo Uesugi and Mark von Wodtke. This paper draws from the presentations made at this symposium and design charrette addressing pollution in the South Coast Air Quality Management District. Endnotes identifying these presentations have been omitted for the sake of brevity; however they are available from the author. Out of this symposium came some insights and ideas as well as a rekindling of the regenerative spirit we wish to share with educators, policy makers, and the general public. Its implications for cleaner air and a better quality of life hopefully will carry the strength needed to transcend words and translate into actions.von Wodtke, M. (1997, Fall). "Renewal through regenerative design." The Cal Poly Pomona Journal of Interdisciplinary Studies, 10, 135-140
Bad neighborhoods
No full textGrowing up in bad neighborhoods has a devastating impact on a child's chances of graduating from high school, a new study shows. How it affects the chance of high school graduation Interview with lead author wodkehttp://deepblue.lib.umich.edu/bitstream/2027.42/93416/1/wodke_oct_11.mp
Simultaneous magnetic resonance imaging of pH, perfusion and renal filtration using hyperpolarized 13C-labelled Z-OMPD
No full textAbstract pH alterations are a hallmark of many pathologies including cancer and kidney disease. Here, we introduce [1,5-13C2]Z-OMPD as a hyperpolarized extracellular pH and perfusion sensor for MRI which allows to generate a multiparametric fingerprint of renal disease status and to detect local tumor acidification. Exceptional long T1 of two minutes at 1 T, high pH sensitivity of up to 1.9 ppm per pH unit and suitability of using the C1-label as internal frequency reference enables pH imaging in vivo of three pH compartments in healthy rat kidneys. Spectrally selective targeting of both 13C-resonances enables simultaneous imaging of perfusion and filtration in 3D and pH in 2D within one minute to quantify renal blood flow, glomerular filtration rates and renal pH in healthy and hydronephrotic kidneys with superior sensitivity compared to clinical routine methods. Imaging multiple biomarkers within a single session renders [1,5-13C2]Z-OMPD a promising new hyperpolarized agent for oncology and nephrology
Random force in molecular dynamics with electronic friction
No full textOriginally conceived to describe thermal diffusion, the Langevin equation includes both a frictional drag and a random force, the latter representing thermal fluctuations first seen as Brownian motion. The random force is crucial for the diffusion problem as it explains why friction does not simply bring the system to a standstill. When using the Langevin equation to describe ballistic motion, the importance of the random force is less obvious and it is often omitted, for example, in theoretical treatments of hot ions and atoms interacting with metals. Here, friction results from electronic nonadiabaticity (electronic friction), and the random force arises from thermal electron–hole pairs. We show the consequences of omitting the random force in the dynamics of H-atom scattering from metals. We compare molecular dynamics simulations based on the Langevin equation to experimentally derived energy loss distributions. Despite the fact that the incidence energy is much larger than the thermal energy and the scattering time is only about 25 fs, the energy loss distribution fails to reproduce the experiment if the random force is neglected. Neglecting the random force is an even more severe approximation than freezing the positions of the metal atoms or modelling the lattice vibrations as a generalized Langevin oscillator. This behavior can be understood by considering analytic solutions to the Ornstein–Uhlenbeck process, where a ballistic particle experiencing friction decelerates under the influence of thermal fluctuations
Teaching Environmental Education to Elementary Aged Home School Students at Nature Centers: An Analysis of Best Practices
No full textThe research question addressed in this project was, what are the best practices for teaching environmental education to elementary aged home school students at nature centers located in a large metropolitan area in the Upper Midwest? This study, analyzes the best practices used by several nature centers that offer home school programs, and are located in the seven counties that comprise the physical limits of the study. A nature center is a designated community space where trained professionals guide and facilitate visitors in their exploration of the natural world, and in developing a relationship with nature. Additionally, this experience should subsequently foster a sustainable connection between the people of the community and their environment. Furthermore, environmental education is required under Federal Law. The data was obtained by physically visiting/observing the grounds and facilities, and conducting in depth interviews with the environmental education practioners at five of nature centers. The research conducted has a completion study of 56%; and the compilation of these best practices is supported by the research presented in the literature review. The research included the geographical characteristics of the nature center; available recreational and adventure programs; and home school program specifics. The author reviewed Eric Anderman’s examination and analysis of the strengths and weaknesses of various research methodologies; and selected a hybrid of Action and Qualitative Research as the most appropriate method to be used. This methodology is relevant when it is conducted by teachers and examines their own practices using a holistic approach to naturalistic settings. This hybrid, or mixed method, research is applicable because environmental science is a multifaceted and complex subject. Some of the best practices reviewed by the author were: 1) time spent outside in conjunction with education correlates to far-reaching academic benefits; 2) experiential learning where a child uses all their senses in exploring and manipulating the natural world, intensifies a child’s desire to experiment; and 3) positive effects are manifested when humans experience nature’s power and grandeur. (346 words
Oriented growth of Ge nanowires with diameters below the Bohr radius.
No full textHighly symmetric self-organized arrays of germanium nanowires with average diameters of similar to 12 +/- 3 nm were produced by chemical vapor deposition. The nanowires grew epitaxially on the faces of single-crystal Ge microcrystals produced in the same synthesis. The epitaxial growth Occurred on several crystal faces with the resultant nanowire structure varying accordingly. The (111) growth direction was found to dominate, however. High-resolution TEM images of a system consisting of the NW and the substrate on which it grew epitaxially are also reported, specifically showing the interface between the two regions, thereby elucidating the growth mechanism.Chemistry, PhysicalNanoscience & NanotechnologyMaterials Science, MultidisciplinarySCI(E)EI10ARTICLE3613797-1380011
Hydrogen atom collisions with a semiconductor efficiently promote electrons to the conduction band
No full textThe Born-Oppenheimer approximation is the keystone of modern computational chemistry and there is wide interest in understanding under what conditions it remains valid. Hydrogen atom scattering from insulator, semi-metal and metal surfaces has helped provide such information. The approximation is adequate for insulators and for metals it fails, but not severely. Here we present hydrogen atom scattering from a semiconductor surface: Ge(111)c(2 × 8). Experiments show bimodal energy-loss distributions revealing two channels. Molecular dynamics trajectories within the Born-Oppenheimer approximation reproduce one channel quantitatively. The second channel transfers much more energy and is absent in simulations. It grows with hydrogen atom incidence energy and exhibits an energy-loss onset equal to the Ge surface bandgap. This leads us to conclude that hydrogen atom collisions at the surface of a semiconductor are capable of promoting electrons from the valence to the conduction band with high efficiency. Our current understanding fails to explain these observations. [Abstract copyright: © 2022. The Author(s).
Enformasyon Bilimlerine Fütüristik Bir Yaklaşım
No full textIn the Information Age, the amount of unique information created every year reaches a level high enough to fill the American Library of Congress 37,000 times and 92% of this bulk is recorded on magnetic media. For the upcoming younger generation, information recorded on paper is “out of coverage area.” They tend to reach information on the spot, via some intelligent informational agents. Thus, they think information that cannot be accessed in increasingly shorter periods of time is not worth accessing. Traditional functions, like presentation of information, trusted information storage, maintaining authenticity and conservation, expected to be fulfilled by information professionals, are becoming increasingly electronic focused, in parallel to the changing world. The level of technical information infrastructure required to fulfill these functions in an electronic environment, on the other hand, has reached a level that requires information sciences to turn into an “information engineering.” Setting out from these changes, this paper questions the ratio of technological aspects to be taught during the education of information professionals and concludes that the place that this education should take place should be reconsidered
H atom scattering from W(110): A benchmark for molecular dynamics with electronic friction
No full textMolecular dynamics with electronic friction (MDEF) at the level of the local density friction approximation (LDFA) has been applied to describe electronically non-adiabatic energy transfer accompanying H atom collisions with many solid metal surfaces. When implemented with full dimensional potential energy and electron density functions, excellent agreement with experiment is found. Here, we compare the performance of a reduced dimensional MDEF approach involving a simplified description of H atom coupling to phonons to that of full dimensional MDEF calculations known to yield accurate results. Both approaches give remarkably similar results for H atom energy loss distributions with a 300 K W(110) surface. At low surface temperature differences are seen; but, quantities like average energy loss are still accurately reproduced. Both models predict similar conditions under which H atoms that have penetrated into the subsurface regions could be observed in scattering experiments
