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The Solutions Generation, Robert Costanza Mar 2012

The Solutions Generation, Robert Costanza

Institute for Sustainable Solutions Publications and Presentations

The Arab Spring, and more recently the Occupy movement, are both indications of growing dissatisfaction with the world?s current plight, especially among the younger generation, who see diminished hope for the future. Anger and protests can be an effective way of bringing the current system into question, and even toppling the existing regime, but they do little by themselves to lead the way to a better future. For that, we need a compelling shared vision and a focus on real solutions.

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Real-Time Change And Damage Detection Of Landslides And Other Earth Movements Threatening Public Infrastructure, Michael J. Olsen, Shawn Butcher, Evon P. Silvia Mar 2012

Real-Time Change And Damage Detection Of Landslides And Other Earth Movements Threatening Public Infrastructure, Michael J. Olsen, Shawn Butcher, Evon P. Silvia

TREC Final Reports

Geologic hazards such as coastal erosion, landslides, seismic loading, etc. constantly threaten public highway construction and maintenance. Repeat surveys using terrestrial laser scanning (TLS, ground-based LiDAR) enable rapid 3D data acquisition to map, see, analyze, and understand the processes generating such problems. Previously, change detection and analysis between scan surveys was conducted during post-processing upon return to the office, instead of while collecting data in the field. Change detection in the field improves the effectiveness and efficiency of the field investigation. We have developed a new algorithm that quickly geo-references scans upon field acquisition and simultaneously performs change detection by …

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Emergent Criticality Through Adaptive Information Processing In Boolean Networks, Alireza Goudarzi, Christof Teuscher, Natali Gulbahce, Thimo Rohlf Mar 2012

Emergent Criticality Through Adaptive Information Processing In Boolean Networks, Alireza Goudarzi, Christof Teuscher, Natali Gulbahce, Thimo Rohlf

Electrical and Computer Engineering Faculty Publications and Presentations

We study information processing in populations of Boolean networks with evolving connectivity and systematically explore the interplay between the learning capability, robustness, the network topology, and the task complexity. We solve a long-standing open question and find computationally that, for large system sizes N, adaptive information processing drives the networks to a critical connectivity K_{c}=2. For finite size networks, the connectivity approaches the critical value with a power law of the system size N. We show that network learning and generalization are optimized near criticality, given that the task complexity and the amount of information provided surpass threshold values. Both …

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Toward Reduction Of Model Uncertainty: Integration Of Bayesian Model Averaging And Data Assimilation, Mark A. Parrish, Hamid Moradkhani, Caleb Matthew Dechant Mar 2012

Toward Reduction Of Model Uncertainty: Integration Of Bayesian Model Averaging And Data Assimilation, Mark A. Parrish, Hamid Moradkhani, Caleb Matthew Dechant

Civil and Environmental Engineering Faculty Publications and Presentations

Multimodeling in hydrologic forecasting has proved to improve upon the systematic bias and general limitations of a single model. This is typically done by establishing a new model as a linear combination or a weighted average of several models with weights on the basis of individual model performance in previous time steps. The most commonly used multimodeling method, Bayesian model averaging (BMA), assumes a fixed probability distribution around individual models' forecast in establishing the prior and uses a calibration period to determine static weights for each individual model. More recent work has focused on a sequential Bayesian model selection technique …

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Reversed Chloroquine Molecules As A Strategy To Overcome Resistance In Malaria, David H. Peyton Mar 2012

Reversed Chloroquine Molecules As A Strategy To Overcome Resistance In Malaria, David H. Peyton

Chemistry Faculty Publications and Presentations

This short review tells the story of how Reversed Chloroquine drugs (RCQs) were developed. These are hybrid molecules, made by combining the quinoline nucleus from chloroquine (CQ) with moieties which are designed to inhibit efflux via known transporters in the membrane of the digestive vacuole of the malaria parasite. The resulting RCQ drugs can have potencies exceeding that of CQ, while at the same time having physical chemical characteristics that may make them favorable as partner drugs in combination therapies. The need for such novel antimalarial drugs will continue for the foreseeable future.

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Faculty Senate Monthly Packet March 2012, Portland State University Faculty Senate Mar 2012

Faculty Senate Monthly Packet March 2012, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The March 2012 Monthly packet includes the March agenda and appendices and the Faculty Senate minutes and attachments from the meeting held February 2012

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Links From Mantle To Microbe At The Lau Integrated Study Site: Insights From A Back-Arc Spreading Center, Margaret K. Tivey, Erin Becker, Roxanne Beinart, Charles R. Fisher, Peter Girguis, Charles H. Langmuir, Peter J. Michael, Anna-Louise Reysenbach Mar 2012

Links From Mantle To Microbe At The Lau Integrated Study Site: Insights From A Back-Arc Spreading Center, Margaret K. Tivey, Erin Becker, Roxanne Beinart, Charles R. Fisher, Peter Girguis, Charles H. Langmuir, Peter J. Michael, Anna-Louise Reysenbach

Biology Faculty Publications and Presentations

The Lau Integrated Study Site (ISS) has provided unique opportunities for study of ridge processes because of its back-arc setting in the southwestern Pacific. Its location allows study of a biogeographical province distinct from those of eastern Pacific and mid-Atlantic ridges, and crustal compositions along the ridge lie outside the range of mid-ocean ridge crustal compositions. The Lau ISS is located above a subduction zone, at an oblique angle. The underlying mantle receives water and other elements derived from the downgoing lithospheric slab, with an increase in slab influence from north to south. Water lowers the mantle melting temperature and …

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De Novo Transcriptome Of Safflower And The Identification Of Putative Genes For Oleosin And The Biosynthesis Of Flavonoids, Haiyan Li, Yuanyuan Dong, Jing Yang, Xiuming Liu, Yanfang Wang, Na Yao, Lili Guan, Nan Wang, Jinyu Wu, Xiaokun Li Feb 2012

De Novo Transcriptome Of Safflower And The Identification Of Putative Genes For Oleosin And The Biosynthesis Of Flavonoids, Haiyan Li, Yuanyuan Dong, Jing Yang, Xiuming Liu, Yanfang Wang, Na Yao, Lili Guan, Nan Wang, Jinyu Wu, Xiaokun Li

Physics Faculty Publications and Presentations

Safflower (Carthamus tinctorius L.) is one of the most extensively used oil crops in the world. However, little is known about how its compounds are synthesized at the genetic level. In this study, Solexa-based deep sequencing on seed, leaf and petal of safflower produced a de novo transcriptome consisting of 153,769 unigenes. We annotated 82,916 of the unigenes with gene annotation and assigned functional terms and specific pathways to a subset of them. Metabolic pathway analysis revealed that 23 unigenes were predicted to be responsible for the biosynthesis of flavonoids and 8 were characterized as seed-specific oleosins. In addition, a …

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Lines That Don’T Divide, City Club Of Portland (Portland, Or.) Feb 2012

Lines That Don’T Divide, City Club Of Portland (Portland, Or.)

City Club of Portland

No abstract provided.

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Ecosystem Services: The Making Of A Metaphor We Live (?) By, Richard B. Norgaard Feb 2012

Ecosystem Services: The Making Of A Metaphor We Live (?) By, Richard B. Norgaard

Systems Science Friday Noon Seminar Series

What started as a humble metaphor to help us think about our relation to nature has become integral to how we are addressing the future of humanity and the course of biological evolution. The metaphor of nature as a stock that provides a flow of services is insufficient for the difficulties we are in or the task ahead. Indeed, combined with the mistaken presumption that we can analyze a global problem within a partial equilibrium economic framework and reach a new economy project-by-project without major institutional change, the simplicity of the stock-flow framework blinds us to the complexity of the …

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Northwest Forest Plan The First 15 Years (1994-2008): Watershed Condition Status And Trend, Steven H. Lanigan, Sean N. Gordon, Peter Eldred, Mark Isley, Heidi Anderson Feb 2012

Northwest Forest Plan The First 15 Years (1994-2008): Watershed Condition Status And Trend, Steven H. Lanigan, Sean N. Gordon, Peter Eldred, Mark Isley, Heidi Anderson

Institute for Sustainable Solutions Publications and Presentations

We used two data sets to evaluate stream and watershed condition for sixth-field watersheds in each aquatic province within the Northwest Forest Plan (NWFP) area: stream data and upslope data. The stream evaluation was based on inchannel data (e.g., substrate, pieces of large wood, water temperature, pool frequency, and macroinvertebrates) we sampled from 2002 to 2009 (193 watersheds) as part of a repeating sample design. We just completed our first round of sampling, so only current condition was calculated for this data set. When condition scores for the inchannel data were grouped into categories, relatively few fell into the low …

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Volatilizable Biogenic Organic Compounds (Vbocs) With Two Dimensional Gas Chromatography-Time Of Flight Mass Spectrometry (Gc × Gc-Tofms): Sampling Methods, Vboc Complexity, And Chromatographic Retention Data, James F. Pankow, Wentai Luo, Andrea Natalie Melnychenko, Kelley Barsanti, Lorne M. Isabelle, C. Chen, Alex B. Guenther, Todd N. Rosenstiel Feb 2012

Volatilizable Biogenic Organic Compounds (Vbocs) With Two Dimensional Gas Chromatography-Time Of Flight Mass Spectrometry (Gc × Gc-Tofms): Sampling Methods, Vboc Complexity, And Chromatographic Retention Data, James F. Pankow, Wentai Luo, Andrea Natalie Melnychenko, Kelley Barsanti, Lorne M. Isabelle, C. Chen, Alex B. Guenther, Todd N. Rosenstiel

Institute for Sustainable Solutions Publications and Presentations

The article discusses the application of two dimensional gas chromatography (GCxGC) with detection by time-of-flight mass spectrometry (TOFMS) in the analysis of air samples containing volatilizable biogenic organic compounds (VBOCs) from leaves of Cedrus atlantica and Calycolpus moritzianus trees. It describes some of the VBOC analytical methods. Also explored are the conditions for sampling with solid-phase microextraction (SPME) fibers and adsorption/thermal desorption (ATD) cartridges.

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Students Designing Sustainability Literacy And Systemic Change Agent Leadership Curricula: An Interconnected Web Approach At Portland State University, Angela L. Hamilton, Heather E. Spalding Feb 2012

Students Designing Sustainability Literacy And Systemic Change Agent Leadership Curricula: An Interconnected Web Approach At Portland State University, Angela L. Hamilton, Heather E. Spalding

Institute for Sustainable Solutions Publications and Presentations

This article profiles unique programs in which students play direct roles in curriculum design, highlights factors that have contributed to programmatic successes, and provides some recommendations for other postsecondary institutions based on lessons learned.

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Artificial Modifications Of The Coast In Response To The Deepwater Horizon Oil Spill: Quick Solutions Or Long-Term Liabilities?, M. Luisa Martinez, Rusty A. Feagin, Kevin M. Yeager, John W. Day, Robert Costanza, Jim A. Harris, Richard J. Hobbs, Jorge López-Portillo, Ian J. Walker, Eric Higgs, Patricia Moreno-Casasola, Julio Sheinbaum, Alejandro Yáñez-Arancibia Feb 2012

Artificial Modifications Of The Coast In Response To The Deepwater Horizon Oil Spill: Quick Solutions Or Long-Term Liabilities?, M. Luisa Martinez, Rusty A. Feagin, Kevin M. Yeager, John W. Day, Robert Costanza, Jim A. Harris, Richard J. Hobbs, Jorge López-Portillo, Ian J. Walker, Eric Higgs, Patricia Moreno-Casasola, Julio Sheinbaum, Alejandro Yáñez-Arancibia

Institute for Sustainable Solutions Publications and Presentations

The Deepwater Horizon oil spill threatened many coastal ecosystems in the Gulf of Mexico during the spring and summer of 2010. Mitigation strategies included the construction of barrier sand berms, the restriction or blocking of inlets, and the diversion of freshwater from rivers to the coastal marshes and into the ocean, in order to flush away the oil, on the premise that these measures could reduce the quantity of oil reaching sensitive coastal environments such as wetlands or estuaries. These projects result in changes to the ecosystems that they were intended to protect. Long-term effects include alterations of the hydrological …

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Developing An Integrated History And Future Of People On Earth (Ihope), Robert Costanza, Ida Kubiszewski, Scott Heckbert, Kathy A. Hibbard, Sander Van Der Leeuw, Steve Aulenbach, Simon Brewer, Michael Burek, Sarah Cornell, Carole L. Crumley, Lisa J. Graumlich, Michelle Hegmon, Stephen T. Jackson, Paul Sinclair, Sverker Sörlin, W. L. Steffen, Carl Folke, J. A. Dearing, Vernon Scarborough Feb 2012

Developing An Integrated History And Future Of People On Earth (Ihope), Robert Costanza, Ida Kubiszewski, Scott Heckbert, Kathy A. Hibbard, Sander Van Der Leeuw, Steve Aulenbach, Simon Brewer, Michael Burek, Sarah Cornell, Carole L. Crumley, Lisa J. Graumlich, Michelle Hegmon, Stephen T. Jackson, Paul Sinclair, Sverker Sörlin, W. L. Steffen, Carl Folke, J. A. Dearing, Vernon Scarborough

Institute for Sustainable Solutions Publications and Presentations

The Integrated History and future of People of Earth (IHOPE) initiative is a global network of researchers and research projects with its International Program Office (IPO) now based at the Stockholm Resilience Center (SRC), Upsalla University, Arizona State University, Portland State University, and the Australian National University. Research linked to IHOPE demonstrates that Earth system changes in the past have been strongly associated with changes in the coupled human-environment system. IHOPE supports integrating knowledge and resources from the biophysical and the social sciences and the humanities to address analytical and interpretive issues associated with coupled human-earth system dynamics. This integration …

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Convergence Analysis Of A Multigrid Algorithm For The Acoustic Single Layer Equation, Simon Gemmrich, Jay Gopalakrishnan, Nilima Nigam Feb 2012

Convergence Analysis Of A Multigrid Algorithm For The Acoustic Single Layer Equation, Simon Gemmrich, Jay Gopalakrishnan, Nilima Nigam

Mathematics and Statistics Faculty Publications and Presentations

We present and analyze a multigrid algorithm for the acoustic single layer equation in two dimensions. The boundary element formulation of the equation is based on piecewise constant test functions and we make use of a weak inner product in the multigrid scheme as proposed in Bramble et al. (1994) . A full error analysis of the algorithm is presented. We also conduct a numerical study of the effect of the weak inner product on the oscillatory behavior of the eigenfunctions for the Laplace single layer operator.

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Ancient Cataclysmic Floods In The Pacific Northwest: Ancestors To The Missoula Floods, Erica Medley Jan 2012

Ancient Cataclysmic Floods In The Pacific Northwest: Ancestors To The Missoula Floods, Erica Medley

Dissertations and Theses

Ancient Cataclysmic Floods were the Ice Age Floods that left erosional and depositional features and preceded the Missoula Floods (15-18,000 ka) in the Pacific Northwest of the United States (Allen et al., 2009). All previously studied ancient sites were visited (14) and new sites (11) were found; four Missoula Flood quarries were also visited; a total of 29 sites were studied in this thesis. The use of calcrete paleosols to provide relative age dates for flood deposits was analyzed in this thesis. Missoula Flood gravel pits were sampled in order to examine the degree of calcrete development in flood deposits …

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Urban Ecosystem Services: Tree Diversity And Stability Of Tropospheric Ozone Removal, Fausto Manes, Guido Incerti, Elisabetta Salvatori, Marcello Vitale, Carlo Ricotta, Robert Costanza Jan 2012

Urban Ecosystem Services: Tree Diversity And Stability Of Tropospheric Ozone Removal, Fausto Manes, Guido Incerti, Elisabetta Salvatori, Marcello Vitale, Carlo Ricotta, Robert Costanza

Institute for Sustainable Solutions Publications and Presentations

Urban forests provide important ecosystem services, such as urban air quality improvement by removing pollutants. While robust evidence exists that plant physiology, abundance, and distribution within cities are basic parameters affecting the magnitude and efficiency of air pollution removal, little is known about effects of plant diversity on the stability of this ecosystem service. Here, by means of a spatial analysis integrating system dynamic modeling and geostatistics, we assessed the effects of tree diversity on the removal of tropospheric ozone (O3) in Rome, Italy, in two years (2003 and 2004) that were very different for climatic conditions and ozone levels. …

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Faculty Senate Monthly Packet January 2012, Portland State University Faculty Senate Jan 2012

Faculty Senate Monthly Packet January 2012, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The January 2012 Monthly packet includes the January agenda and appendices and the Faculty Senate minutes and attachments from the meeting held December 2011

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The Future Of Agriculture And Society In Iowa: Four Scenarios, Meghann E. Jarchow, G. L. Drake Larsen, Robert Costanza, Gretchen Zdorkowski, Stefans R. Gailans, Nicholaus Ohde, Ranae Dietzel, Sara Kaplan, Jeri Neal, Mae Rose Petrehn, Theodore Gunther, Stephanie N. D’Adamo, Nicholas Mccann, Andrew Larson, Phillip Damery, Lee Gross, Marc Merriman, Ida Kubiszewski, Julian Post, Meghan Sheradin, Matt Liebman Jan 2012

The Future Of Agriculture And Society In Iowa: Four Scenarios, Meghann E. Jarchow, G. L. Drake Larsen, Robert Costanza, Gretchen Zdorkowski, Stefans R. Gailans, Nicholaus Ohde, Ranae Dietzel, Sara Kaplan, Jeri Neal, Mae Rose Petrehn, Theodore Gunther, Stephanie N. D’Adamo, Nicholas Mccann, Andrew Larson, Phillip Damery, Lee Gross, Marc Merriman, Ida Kubiszewski, Julian Post, Meghan Sheradin, Matt Liebman

Institute for Sustainable Solutions Publications and Presentations

Iowa is a leader in crop and livestock production, but its high productivity has had concomitant negative environmental and societal impacts and large requirements for fossil-fuel-derived inputs. Maintaining agricultural productivity, economic prosperity and environmental integrity will become ever more challenging as the global demand for agricultural products increases and the resources needed become increasingly limited. Here we present four scenarios for Iowa in 2100, based on combinations of differing goals for the economy and differing energy availability. In scenarios focused on high material throughput, environmental degradation and social unrest will increase. In scenarios with a focus on human and environmental …

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Crime Emergence And Simulation Modeling: Modeling Crime Space, Patricia Brantingham, Kathryn Wuschke, Richard Frank, Paul J. Brantingham Jan 2012

Crime Emergence And Simulation Modeling: Modeling Crime Space, Patricia Brantingham, Kathryn Wuschke, Richard Frank, Paul J. Brantingham

Criminology and Criminal Justice Faculty Publications and Presentations

This chapter explores several new modeling approaches and research findings, showing how they may be used to explore and enhance theory. There is a special emphasis on Target Choice Selection, focusing on Crime Pattern Theory and the Geometry of Crime (Brantingham and Brantingham, 1978a, 1984, 1991; Brantingham and Brantingham, 1981, 1993a, 2008). This exploration is described through a series of research examples and a case study of the target choice behavior of high repeat offenders. The goal is to explore the emergence of patterns better understood against the urban backcloths for high repeat offenders. Emphasis is in this case study …

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Merging Critical Thinking And Information Literacy Outcomes - Making Meaning Or Making Strategic Partnership?, Robert Schroeder Jan 2012

Merging Critical Thinking And Information Literacy Outcomes - Making Meaning Or Making Strategic Partnership?, Robert Schroeder

Library Faculty and Staff Publications and Presentations

The following book chapter will look at critical thinking, how librarians perceive its relationship to information literacy, and what useful strategies can result when these two concepts are combined. To set the stage a few of the major psychological and philosophical theories of critical thinking will be briefly noted. In order to gauge our profession's understanding of critical thinking and its relationship to information literacy, a survey of library literature will be performed. The more rigorous articles from this survey will then be discussed in order to discern the range of positions librarians have taken on the relationship of these …

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Where Is The Rain-On-Snow Zone In The West-Central Washington Cascades?: Monte Carlo Simulation Of Large Storms In The Northwest, Matthew John Brunengo Jan 2012

Where Is The Rain-On-Snow Zone In The West-Central Washington Cascades?: Monte Carlo Simulation Of Large Storms In The Northwest, Matthew John Brunengo

Dissertations and Theses

Rain-on-snow (ROS) occurs when warm, wet air moves into latitudes and/or elevations having vulnerable snowpacks, where it can alter water inputs to infiltration, runoff and erosion. The Pacific Northwest is particularly susceptible: winter storms off the Pacific cause locally heavy rain plus snowmelt almost annually, and disastrous flooding and landsliding intermittently. In maritime mountainous terrain, the effects seem more likely and hydrologically important where warm rains and seasonal snowpacks are liable to coincide, in middle elevations. Several questions arise: (1) In the PNW, does ROS affect the long-term frequency and magnitude of water delivery to the ground, versus total precipitation …

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Variability In The Mass Flux Of The Ross Sea Ice Streams, Antarctica, Over The Last Millennium, Ginny Catania, Christina L. Hulbe, Howard Conway, Ted A. Scambos, C. F. Raymond Jan 2012

Variability In The Mass Flux Of The Ross Sea Ice Streams, Antarctica, Over The Last Millennium, Ginny Catania, Christina L. Hulbe, Howard Conway, Ted A. Scambos, C. F. Raymond

Geology Faculty Publications and Presentations

We synthesize previously published remote-sensing observations, radar data and model output to obtain a ~1000 year ice flow history for the Siple Coast ice-stream system in West Antarctica to investigate the timing and magnitude of changes in mass flux. The synthesized history shows significant short-term variability in ice-stream shear margin and grounding line position due to internal variability of the coupled system. The chronology highlights the interplay between adjacent ice streams, which implies that the behavior of any individual ice stream should not be examined in isolation. Furthermore, individual events cannot be fully interpreted without an understanding of the broad-scale, …

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Community Earth System Model: Implementation, Validation, And Applications, William Christian Porter Jan 2012

Community Earth System Model: Implementation, Validation, And Applications, William Christian Porter

Dissertations and Theses

The Community Earth System Model (CESM) is a coupling of five different models which are combined to simulate the dynamic interactions between and within the Earth's atmosphere, ocean, land, land-ice, and sea-ice. In this work, the installation and testing of CESM on Portland State University's Cluster for Climate Change and Aerosol Research (CsAR) is described and documented, and two research applications of the model are performed. First, the improved treatment of cloud microphysics within recent versions of CESM's atmospheric module is applied to an examination of changes in shortwave cloud forcing (SWCF) and results are compared to output from older …

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Exploring Ethnic Differences In The Predictors And Outcomes Of Academic Engagement During Middle School, Robin Margarett Johnson Jan 2012

Exploring Ethnic Differences In The Predictors And Outcomes Of Academic Engagement During Middle School, Robin Margarett Johnson

Dissertations and Theses

Guided by a motivational framework derived from self-determination theory, a study was conducted to examine the role of academic engagement in helping to explain and ameliorate ethnic differences in school achievement. Building on decades of research that documents both the importance of engagement to learning in European American students as well as its malleability, this study relied on an ethnically diverse sample of 6th and 7th grade students to examine three questions (1) Are achievement differences across ethnic groups due to differences in engagement? (2) Does engagement predict achievement similarly or differently across ethnic groups? and (3) Are the predictors …

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Electronic Properties And Structure Of Functionalized Graphene, Pavel Plachinda Jan 2012

Electronic Properties And Structure Of Functionalized Graphene, Pavel Plachinda

Dissertations and Theses

The trend over the last 50 years of down-scaling the silicon transistor to achieve faster computations has led to doubling of the number of transistors and computation speed over about every two years. However, this trend cannot be maintained due to the fundamental limitations of silicon as the main material for the semiconducting industry. Therefore, there is an active search for exploration of alternate materials. Among the possible candidates that can may [sic] be able to replace silicon is graphene which has recently gained the most attention. Unique properties of graphene include exceedingly high carrier mobility, tunable band gap, huge …

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Euthanasia, The Ethics Of Patient Care And The Language Of Propaganda, Elizabeth Maria Krapf Jan 2012

Euthanasia, The Ethics Of Patient Care And The Language Of Propaganda, Elizabeth Maria Krapf

Dissertations and Theses

This thesis is an examination of euthanasia, eugenics, the ethic of patient care, and linguistic propaganda in the Second World War. The examination of euthanasia discusses not only the history and involvement of the facility at Hadamar in Germany, but also discuss the current euthanasia debate. Euthanasia in World War II arose out of the Nazi desire to cleanse the Reich and was greatly influenced by the American eugenics movement of the early 20th century. Eugenics was built up to include anyone considered undesirable and unworthy of life and killed many thousands of people before the invasion of allied troops …

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Fundamental Properties Of Functional Zinc Oxide Nanowires Obtained By Electrochemical Method And Their Device Applications, Athavan Nadarajah Jan 2012

Fundamental Properties Of Functional Zinc Oxide Nanowires Obtained By Electrochemical Method And Their Device Applications, Athavan Nadarajah

Dissertations and Theses

We report on the fundamental properties and device applications of semiconductor nanoparticles. ZnO nanowires and CdSe quantum dots were used, prepared, characterized, and assembled into novel light-emitting diodes and solar cells. ZnO nanowire films were grown electrochemically using aqueous soluble chloride-based electrolytes as precursors at temperatures below 90° C. Dopants were added to the electrolyte in the form of chloride compounds, which are AlCl3, CoCl2, CuCl2, and MnCl2. The optical, magnetic, and structural properties of undoped and transition-metal-ion doped ZnO nanowires were explored. Our results indicate that the as-grown nanowire structures have …

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Heart Rate And Accelerometry During Singles Footbag Net Play, Christopher Michael Siebert Jan 2012

Heart Rate And Accelerometry During Singles Footbag Net Play, Christopher Michael Siebert

Dissertations and Theses

This investigation examined the heart rate responses and movement characteristics of experienced footbag net players during singles play. Footbag net is a net/court sport similar to volleyball, but it is played with a footbag (e.g., Hacky-SackTM) using only the feet. In singles footbag net, players are allowed either one or two kicks to propel the footbag over the net. Subjects were 15 males and 1 female, ranging in age from 18- 60 years, with a mean age of 33.6 years. Subjects played two games of singles footbag net using two different scoring systems: "sideout" scoring and "rally" scoring. …

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