Digital Commons Network^™

Understanding Of Student Task Interpretation, Design Planning, And Cognitive Strategies During Engineering Design Activities In Grades 9-12, Oenardi Lawanto

Publications

The objective of this study was to describe the task interpretation of students engaged in a design activity and determine the extent to which students translate their understanding of their design task to their planning and cognitive strategies. Twenty-nine students at one Colorado high school participated in this study. Students worked individually in the Architectural Design class (n=7), and in teams in the Robotics Design class (n=22). To capture students’ perceptions of their understanding of the task, planning strategies, and cognitive strategies, the Engineering Design Questionnaire (EDQ) was used. The development of the EDQ was guided by Butler and Cartier’s …

Integrating Technology And Problem-Based Learning: A Mixed Methods Study Of Two Teacher Professional Development Designs, Andrew Walker, Mimi Recker, Brooke Robertshaw, Jeffrey Olsen, Heather Leary, Lei Ye, Linda Sellers

The Instructional Architect Research Group

No abstract provided.

Spatial And Temporal Patterns Of Mercury Accumulation In Lacustrine Sediments Across The Laurentian Great Lakes Region, Paul E. Drevnick, Daniel R. Engstrom, Charles T. Driscoll, Edward B. Swain, Steven J. Balogh

Civil and Environmental Engineering - All Scholarship

Data from 104 sediment cores from the Great Lakes and “inland lakes” in the region were compiled to assess historical and recent changes in mercury (Hg) deposition. The lower Great Lakes showed sharp increases in Hg loading c. 1850-1950 from point-source water dischargers, with marked decreases during the past half century associated with effluent controls and decreases in the industrial use of Hg. In contrast, Lake Superior and inland lakes exhibited a pattern of Hg loading consistent with an atmospheric source - gradual increases followed by recent (post-1980) decreases. Variation in sedimentary Hg flux among inland lakes was primarily attributed …

Destructive Coordination, Charles K. Whitehead

Cornell Law Review

No abstract provided.

Introduction To Special Topic Section: Ecopsychology’S Roots In Humanistic And Transpersonal Psychology, The Deep Ecology Movement, And Ecocriticism, Mark Schroll, Glenn Hartelius

International Journal of Transpersonal Studies

NA

2011-2012. Catalog., Hope College

Hope College Catalogs

No abstract provided.

Nadelhoffer, K. J., Hogg, A. J., And Hazlett, B. A. (Eds.). (2010). Changing Environment Of Northern Michigan: A Century Of Science And Nature At The University Of Michigan Biological Station. Ann Arbor, Mi: University Of Michigan Press, Kevin Mcdonough

Publication

No abstract provided.

"The Status And Distribution Of Freshwater Crabs [Central Africa]" , Neil Cumberlidge

Book Sections/Chapters

No abstract provided.

"Freshwater Crabs Of Africa: Biodiversity, Distribution, And Conservation." , Neil Cumberlidge

Book Sections/Chapters

No abstract provided.

"The Status And Distribution Of Freshwater Crabs [Indo-Burma Region Of Asia]" , Neil Cumberlidge, Peter Kl Ng, Darren Cj Yeo

Book Sections/Chapters

No abstract provided.

Black-Capped Chickadee, Alec R. Lindsay Ph. D.

Faculty Works

No abstract provided.

An Analysis Of Ethnic Labels: Essemtialism Vs. Circumstantialism, John Holloway

Undergraduate Psychology Research Methods Journal

Labeling was used through the daily life of most people and is critical in the idea of ethnicity. The purpose behind this experiment was to test Lindenwood student’s thought process behind ethnic labeling. Mainly the experiment was meant to develop the idea of whether an individual was more circumstantialist or essentialist in nature when dealing with ideas of labeling. The hypothesis was that the Lindenwood students would tend to lean toward the essentialist group thought process due to the diversity of the student body. Essentialist believed their biological parents passed on ethnicity. While circumstantialist believed ethnicity was created by behavior …

Self-Esteem And Stress Perception Among Athletes And Non-Athletes, Frederica Bertolini

Undergraduate Psychology Research Methods Journal

This study examined the differences between athletes and non-athletes students in relation to self-esteem and stress level. Gender of the participants was also taken into consideration. Thirty participants were recruited at Lindenwood University in St. Charles, MO. Fourteen participants were athletes and 16 participants were non-athletes. Also, 14 participants were males and 16 participants were female. Rosenberg Scale (Rosenberg, 1965) and Perceived Stress Scale (Cohen, 1983) were used to test self-esteem and stress level respectively. The hypothesis of this study was that college student athletes have a higher self-esteem and a higher stress level than non-athletes students. However, the results …

From Clinical Integration To Accountable Care, Mark Shields

Annals of Health Law and Life Sciences

Four key challenges to reforming health care organizations can be addressed by a clinical integration model patterned after Advocate Physician Partners (APP). These challenges are: predominance of small group practices, dominant fee-for-service reimbursement methods, weaknesses of the traditional hospital medical staff structure and a need to partner with commercial insurance companies. APP has demonstrated teamwork between 3800 physicians and hospitals to improve quality, patient safety and cost-effectiveness. Building on this model, an innovative contract with Blue Cross Blue Shield of Illinois serves as a prototype for a commercial Accountable Care Organization. For this contract to succeed, APP must outperform the …

Revisiting Scaling Laws In River Basins: New Considerations Across Hillslope And Fluvial Regimes, Chandana Gangodagamage, Patrick Belmont, Efi Foufoula-Georgiou

Watershed Sciences Faculty Publications

Increasing availability of high‐resolution (1 m) topography data and enhanced computational processing power present new opportunities to study landscape organization at a detail not possible before. Here we propose the use of “directed distance from the divide” as the scale parameter (instead of Horton’s stream order or upstream contributing area) for performing detailed probabilistic analysis of landscapes over a broad range of scales. This scale parameter offers several advantages for applications in hydrology, geomorphology, and ecology in that it can be directly related to length‐scale dependent processes, it can be applied seamlessly across the hillslope and fluvial regimes, and it …

Perinatal Or Adult Nf1 Inactivation Using Tamoxifen-Inducible Plpcre Each Cause Neurofibroma Formation, Debra A. Mayes, Tilat A. Rizvi, Jose A. Cancelas, Nathan T. Kolasinski, Georgianne M. Ciraolo, Anat O. Stemmer-Rachamimov, Nancy Ratner

Neuroscience, Cell Biology & Physiology Faculty Publications

OBJECTIVES

Neurofibromas are tumors initiated by biallelic mutation of the NF1 tumor suppressor gene in the Schwann cell lineage. One idea within the field suggests that Nf1loss must occur within progenitor cells present within a critical window during Schwann cell development in order for neurofibromas to form. To test this hypothesis and to examine whethermyelinating Schwann cells can serve as aneurofibroma cell of origin, Nf1 loss was induced at perinatal or adult timepoints using a tamoxifen-inducible Plp-CreERT driver.

RESULTS

Perinatal loss of Nf1 resulted in small neurofibromas late in life, while adult loss caused large neurofibromas and morbidity beginning …

The Influence Of School Eating Environment On Children's Eating Behaviors: An Examination Of The Snda-Iii, Sabrina M. Neeley

Master of Public Health Program Student Publications

The prevalence of childhood overweight and obesity in the United States has prompted researchers to examine the factors that contribute to children’s food choices and consumption. Schools provide ample opportunities to teach children healthy eating habits, as well as create eating environments that are conducive to healthy eating behaviors. The National School Lunch Program (NSLP) provides federally assisted meals to millions of children every day and the assessment of the NSLP provides an opportunity to examine the school-eating environment. Hierarchical and logistic modeling of the SNDA-III, the USDA assessment of the NSLP, was conducted to determine relationships between environmental factors …

New Adventures Of The Old Bureau: Modern-Day Reclamation Statutes And Congress Unfinished Environmental Business, Reed D. Benson

Faculty Scholarship

Congress established the reclamation program in 1902, and the hundreds of federal water projects built in the 20th century helped shape the West. Today, the Bureau of Reclamation plays an enormously important role in managing these projects. But with no big new dams to build, the Bureau has been forced to revise its mission to address todays water management challenges, such as stretching finite water supplies and restoring aquatic ecosystems. Through both site-specific enactments and programmatic statutes, Congress in recent years has given the Bureau new authority and direction to address these modern challenges. But Congress has left a significant …

Research Annual Report 2010, Children's Mercy Hospital

Research Annual Reports

Annual report of the research at Children's Mercy Hospital in Kansas City MO, a pediatric medical center.

South Atlantic Overturning Circulation At 24°S, Harry L. Bryden, Brian A. King, Gerard D. Mccarthy

Journal of Marine Research

To estimate the size of the meridional overturning circulation and the meridional heat and freshwater transports in the South Atlantic, we made a new transatlantic hydrographic section along 24°S in 2009 and we compare the resulting transports with those estimated for a historical section made in 1983. For the two sections, the overturning is estimated to be 21.5 Sv (2009) or 16.5 Sv (1983), the heat transport is northward at 0.7 PW (2009) or 0.4 PW (1983), and the freshwater transport is small but northward at 0.04 Sv (2009) or 0.17 Sv (1983). The differences in transports are primarily due …

Role Of The Southern Ocean In Setting The Atlantic Stratification And Meridional Overturning Circulation, Igor Kamenkovich, Timour Radko

Journal of Marine Research

This study examines the importance of the Southern Ocean (SO) stratification in determining the upper cell of the Atlantic meridional overturning circulation (MOC) and stratification. Main results are based on a suite of idealized numerical simulations of the Atlantic with the prescribed density structure at the Atlantic southern boundary, intended to explore the importance of various factors. The results demonstrate that the density distribution at the SO-Atlantic boundary is the key factor controlling the Atlantic stratification and MOC, whereas the main importance of the Ekman and eddy (parameterized) exchanges is in setting the SO stratification. Among all aspects of the …

Ellipsoidal Vortex In A Nonuniform Flow: Dynamics And Chaotic Advections, V. V. Zhmur, E. A. Ryzhov, K. V. Koshel

Journal of Marine Research

Quasi-geostrophic dynamics of an ellipsoidal vortex embedded in a nonuniform flow is studied in the approximation of the infinitely deep rotating ocean with a constant buoyancy frequency. The vortex core is an ellipsoid with a constant vorticity different from the background vorticity value. The core is shown to move along with the flow and to deform under the effect of it. Regimes of the core's behavior depend on the flow characteristics and the initial values of the vortex parameters (the shape and the orientation relative to the flow). These regimes are (i) rotation (along with the eccentricity oscillation), (ii) oscillation …

Secondary Toroidal Vortices Above Seamounts, Valery N. Zyryanov 0

Journal of Marine Research

The classical Taylor-Couette flow appears in a homogeneous fluid between two coaxial cylinders rotating with different angular velocities. The stability loss by a Taylor-Couette flow leads to a bifurcation and generation of Taylor toroidal vortices. In this study we consider an analog to this effect in the case of seamounts in a homogeneous ocean on a f-plane. A seamount is approximated by two coaxial cylinders with heights h₁, h₂ standing one upon the other, the lower cylinder having a larger diameter. Taylor-Couette flow forms in a circular area above the ledge as follows from the differential …

Topographic Rectification In A Stratified Ocean, K. H. Brink

Journal of Marine Research

Mean flow generation by oscillating currents is considered in an idealized stratified ocean with a corrugated shelf-slope topography. Numerical model results for near-bottom mean along-isobath flow show a general parameter dependence similar to that found with no stratification (Brink, 2010). Stratification, however, makes the interior rectified flow depth-dependent, and usually bottom-intensified. Scalings for both the mean flow and its vertical dependence are developed and evaluated. Two crude comparisons against observed mean oceanic flows suggest that the present results may parameterize the mean flow magnitude correctly.

Rossby Wormholes, David P. Marshall

Journal of Marine Research

The influence of bottom topography on the westward propagation of long, baroclinic Rossby waves is studied analytically in a two-layer ocean model. In the limit of a thin upper layer, scaling analysis suggests that the waves should be relatively insensitive to variable bottom topography however, this insensitivity can break down in regions of closed f/H contours, where f is the Coriolis parameter and H the ocean depth. An integral constraint is derived in the planetary-geostrophic limit, showing that the net radiative flux of upper layer thickness anomalies into a closed f/H contour, at its eastern margin, is balanced by an …

Fluid Mixing By Swimming Organisms In The Low-Reynolds-Number Limit, Eric Kunze

Journal of Marine Research

Recent publications in the fluid physics literature have suggested that low-Reynolds-number swimming organisms might contribute significantly to ocean mixing. These papers have focussed on the mass transport due to fluid capture and disturbance by settling or swimming particles based on classical fluid mechanics flows but have neglected the role of molecular property diffusion. Scale-analysis of the property conservation equation finds that, while properties with low molecular diffusivities can have enhanced mixing for typical volume fractions in aggregations of migrating zooplankton, this mixing is still well below that due to internal-wave breaking so unlikely to be important in the ocean.

The Nonlinear Downstream Development Of Baroclinic Instability, Joseph Pedlosky

Journal of Marine Research

The downstream development in both space and time of baroclinic instability is studied in a nonlinear channel model on the f-plane. The model allows the development of the instability to be expressed on space and time scales that are long compared to the growth rates and wavelengths of the most unstable wave. The unstable system is forced by time-varying boundary conditions at the origin of the channel and so serves as a conceptual model for the development of fluctuations in currents like the Gulf Stream and Kuroshio downstream of their separation points from their respective western boundaries. The theory …

Meddy, Spiral Arms, And Mixing Mechanisms Viewed By Seismic Imaging In The Tagus Abyssal Plain (Sw Iberia), Haibin Song, Luis Menezes Pinheiro, Barry Ruddick, Francisco Curado Teixeira

Journal of Marine Research

Seismic imaging of the water column is used to investigate the relative roles of thermohaline intrusive mixing and stirring (straining and shearing) by mesoscale eddies in the NE Atlantic, in and around a Meddy, and in waters between the Meddy and the coast of Portugal. The images show that mixing is virtually absent within the core but anomalously high in the top, bottom, and surrounding frontal region, as previously found by conventional means. In the immediate periphery of the Meddy, bands of water with numerous reflectors consistent with thermohaline intrusions, and with anomalously high mixing rate can be seen. We …

Dispersant Efficacy And Effectiveness, Thomas Coolbaugh, Amy Mcelroy

Coastal Response Research Center

Dispersants have been researched extensively and used for oil spill mitigation for more than 40 years, yet there are opportunities to enhance our understanding, including with respect to their long term fate and effects and how to optimize dispersant use. For example, the 2005 National Academy of Sciences report, Understanding Oil Spill Dispersants: Efficacy and Effects, suggested a number of areas where increased understanding would help support the use of dispersants. Throughout the summer of 2010 dispersants were used in unprecedented quantities and, in the case of sub-sea application, with novel application methods following the Deepwater Horizon incident. The focus …

True Independence For Medical Examiners Equals Due Process For Criminal Defendants And More Efficiencies In The Criminal Justice System, Julie Jonas

William Mitchell Law Review

No abstract provided.