Digital Commons Network^™

Staff Nurse Perceptions Of The Contributions Of Students To Clinical Agencies, Geraldine Matsumura, Lynn Clark Callister, Sheri P. Palmer, Amy Harmer Cox, Larissa Larsen

Faculty Publications

This study is a replication and extension of Grindel and associates' 2001 study of the perceptions of staff nurses (psychiatric, perinatal, and medical/surgical) regarding the benefits of having students from a baccalaureate nursing program work in clinical agencies. Using the Nursing Students' Contributions to Clinical Agencies tool, the overall perception of students' contributions ranged from -4 to +5, with a mean of 2.50. The two highest ranked items were "allows opportunities for mentoring" and "threatens professional role development," indicating the ambivalence staff nurses feel toward nursing students. Qualitative data also demonstrated the benefits and challenges of working with students. Recommendations …

Physical Activity Among Children Attending Preschools, Russell R. Pate, Karin A. Pfeiffer, Stewart G. Trost, Paula Ziegler, Marsha Dowda

Faculty Publications

Objectives. Obesity rates are increasing among children of all ages, and reduced physical activity is a likely contributor to this trend. Little is known about the physical activity behavior of preschool-aged children or about the influence of preschool attendance on physical activity. The purpose of this study was to describe the physical activity levels of children while they attend preschools, to identify the demographic factors that might be associated with physical activity among those children, and to determine the extent to which children’s physical activity varies among preschools.

Methods. A total of 281 children from 9 preschools wore an Actigraph …

Install Your Own Wireless Network, William G. Heninger, Craig J. Lindstrom, Bryce H. Peterson, Marshall B. Romney

Faculty Publications

Would you like to access the Internet, your printer and your other computers, including laptops, without stringing wires throughout your office or home? The solution is a wireless local area network (WLAN) and we'll tell you how easy it is to install one yourself at a nominal cost. WLANs replace conventional wires with devices called wireless access points that plug into any electrical wall socket. WLAN hardware contains miniature transmitters and antennae that send and receive radio signals to and from your computers and other peripherals.

A Review Of Antennas And Propagation For Mimo Wireless Communications, Michael A. Jensen, Jon W. Wallace

Faculty Publications

Multiple-input-multiple-output (MIMO) wireless systems use multiple antenna elements at transmit and receive to offer improved capacity over single antenna topologies in multipath channels. In such systems, the antenna properties as well as the multipath channel characteristics play a key role in determining communication performance. This paper reviews recent research findings concerning antennas and propagation in MIMO systems. Issues considered include channel capacity computation, channel measurement and modeling approaches, and the impact of antenna element properties and array configuration on system performance. Throughout the discussion, outstanding research questions in these areas are highlighted.

Resolution Scaling In Noncontact Scanning Impedance Imaging, Benjamin C. Green, Tao Shang, Jacey C. Morine, Hongze Liu, Stephen M. Schultz, Travis E. Oliphant, Aaron R. Hawkins

Faculty Publications

Noncontact scanning impedance imaging has been presented as a method to provide high resolution, high contrast images for a variety of material systems. This technique combines electrical impedance measurements with very high resolution scanning. This article reports on efforts to scale this technique down to the very important single micron range and reveals measurements for both thick and thin samples with a measured minimum resolution below 30 µm. A design for a shielded impedance probe applicable to this process is outlined and probes of several different sizes were made and tested. Fabrication of these impedance probes is explained and a …

Incremental Genetic K-Means Algorithm And Its Application In Gene Expression Data Analysis, Yi Lu, Shiyong Lu, Farhad Fotouhi, Youping Deng, Susan J. Brown

Faculty Publications

Background

In recent years, clustering algorithms have been effectively applied in molecular biology for gene expression data analysis. With the help of clustering algorithms such as K-means, hierarchical clustering, SOM, etc, genes are partitioned into groups based on the similarity between their expression profiles. In this way, functionally related genes are identified. As the amount of laboratory data in molecular biology grows exponentially each year due to advanced technologies such as Microarray, new efficient and effective methods for clustering must be developed to process this growing amount of biological data.

Results

In this paper, we propose a new clustering algorithm, …

Computing The M = 1 Diocotron Frequency Via An Equilibrium Calculation In Non-Neutral Plasmas, Ross L. Spencer

Faculty Publications

The m = 1 diocotron mode in non-neutral plasmas has long been thought of as a shifted equilibrium, and its frequency has been approximately calculated in this way by Fine and Driscoll [Phys. Plasmas 5, 601 (1998)]. This article shows that this idea can be coupled with a standard axisymmetric equilibrium calculation on a grid to calculate the frequency of this mode to very high precision including both finite-length and thermal effects, provided that the Debye length is small enough. As the Debye length begins to approach the plasma size not only does the shifted equilibrium calculation fail to predict …

Integrated Optical Waveguides With Liquid Cores, Aaron R. Hawkins, John P. Barber, Dongliang Yin, D. W. Deamer, Holger Schmidt

Faculty Publications

We report the design, fabrication, and demonstration of single-mode integrated optical waveguides with liquid cores. The principle of the device is based on antiresonant reflecting optical (ARROW) waveguides with hollow cores. We describe design principles for waveguide loss optimization down to 0.1/cm. Using a fabrication process based on conventional silicon microfabrication and sacrificial core layers, waveguides of varying widths and lengths with volumes covering the pico- to nanoliter range were fabricated. We observe confined mode propagation, measure waveguide losses of 2.4/cm, and demonstrate that the waveguides possess tailorable wavelength selectivity. The potential for highly integrated, sensitive devices based on these …

Optical Properties And Application Of Uranium-Based Thin Films For The Extreme Ultraviolet And Soft X-Ray Region, Richard L. Sandberg, David D. Allred, Shannon Lunt, Marie K. Urry, R. Steven Turley

Faculty Publications

Uranium oxide and uranium nitride thin films reflect significantly more than all previously known/standard reflectors (e.g., nickel, gold, and iridium) for most of the 4-10 nm range at low angles of incidence. This work includes measurements of the EUV/soft x-ray (2-20 nm) reflectance of uranium-based thin films (~20 nm thick) and extraction of their optical constants (d and ?). We report the reflectances at 5, 10, and 15 degrees grazing incidence of air-oxidized sputtered uranium, reactively sputtered (O2) uranium oxide, and reactively sputtered (N2) uranium nitride thin films measured at Beamline 6.3.2 at the Advanced Light Source (ALS) at Lawrence …

Two Mistakes Behavioralists Make: A Reply To Professor Feigenson Et Al. And Professor Slovic, Thom Lambert

Faculty Publications

First, the growing catalog of cognitive quirks may lead behavioralists to hastily adopt “non-rational” explanations for otherwise rational behavior. Second, because their evidence seems to undermine the rationality assumption of Chicago school law and economics, behavioralists may improperly assume that their work also undermines that school's default policy prescription--i.e., laissez faire. Consequently, they may advocate inappropriately paternalistic government policies.

Captors To Captives To Christians To Calabar: Navigating The Boundaries Of Slavery And Freedom In The Trans-Atlantic Slave Trade, Matt D. Childs

Faculty Publications

No abstract provided.

Sacramental Theology And Ecclesiastical Authority, Darius Jankiewicz

Faculty Publications

No abstract provided.

The President's Page: Creation—The Sine Qua Non Of Adventism, Jiri Moskala

Faculty Publications

No abstract provided.

Racial/Ethnic Differences In Hypertension And Hypertension Treatment And Control In The Multi-Ethnic Study Of Atherosclerosis (Mesa), Holly Kramer, Cong Han, Wendy Post, David Goff, Ana Diez-Roux, Richard Cooper, Sujata Jinagouda, Steven Shea

Faculty Publications

Most previous studies investigating the association between ethnicity and hypertension focused on differences between African Americans and whites and did not include other racial/ethnic groups such as Chinese or Hispanics. We used data from the Multi-Ethnic Study of Atherosclerosis (MESA), a population-based study of 6814 adults without clinical cardiovascular disease, to examine the association between ethnicity and hypertension and hypertension treatment among white, African American, Chinese, and Hispanic ethnic groups. The prevalence of hypertension, defined as systolic blood pressure (BP) hypertension, was significantly higher in African Americans compared to whites (60% v 38%; P < .0001), whereas prevalence in Hispanic (42%) and Chinese participants (39%) did not differ significantly from that in whites. After adjustment for age, body mass index, prevalence of diabetes mellitus, and smoking, African American (odds ratio [OR] 2.21; 95% confidence interval [95% CI] 1.91-2.56) and Chinese (OR 1.30; 95% CI 1.07-1.56) ethnicity were significantly associated with hypertension compared to whites. Among hypertensive MESA participants, the percentage of treated but uncontrolled hypertension in whites (24%) was significantly lower than in African Americans (35%, P < .0001), Chinese (33%, P =. 003), and Hispanics (32%, P =. 0005), but only African-American race/ethnicity remained significantly associated with treated but uncontrolled hypertension after controlling for socioeconomic factors (OR 1.35; 95% CI 1.07-1.71). Diuretic use was lowest in the Chinese (22%) and Hispanic participants (32%) and was significantly lower in these groups compared with white participants (47%; P < .0001 for both comparisons). Programs to improve hypertension treatment and control should focus on a better understanding of differences in the prevalence of hypertension and hypertension control among minority groups in the United States, especially African Americans, compared with whites, and on techniques to prevent hypertension and improve control in high-risk groups. © 2004 American Journal of Hypertension, Ltd.

The Dynamics Of Market Entry: The Effects Of Mergers And Acquisitions On Entry In The Banking Industry, Allen N. Berger, Seth D. Bonime, Lawrence G. Goldberg, Lawrence J. White

Faculty Publications

We study the dynamics of market entry following mergers and acquisitions (M&As) using banking industry data. The findings suggest that M&As are associated with statistically and economically significant increases in the probability of entry. The data suggest that M&As affect the proportion of the markets with entry by about 10-20%. These findings also suggest that entry may be part of an "external" effect of M&As that helps supply credit to some relationship-dependent small business borrowers. Our results are robust to the use of alternative econometric methods, changes in specifications of the exogenous variables, and alteration of the data samples.

Overcoming The Limitations Of Learning Objects, David Wiley, Matthew Barclay, Deonne Dawson, Brent Lambert, Laurie Nelson, David Wade, Sandie Waters

Faculty Publications

Note: this is not the final version of the article. There are a number of issues facing those who wish to employ learning objects in the facilitation of learning. There are a number of issues facing those who wish to employ learning objects to facilitate learning. These issues are not, however, inherent in the component-based paradigm. The first section of this paper describes some of the most difficult issues to be resolved. In the second section, we present a model of the use of learning objects that is grounded in a object-based paradigm. In the third section, we describe the …

Wind Speed Effect On L-Band Brightness Temperature Inferred From Eurostarrs And Wise 2001 Field Experiments, David G. Long, Jacqueline Etcheto, Emmanuel P. Dinnat, Jacqueline Boutin, Adriano Camps, Stephanie Contardo, J. Wesson, Jordi Font, J. Miller

Faculty Publications

The results from two field experiments in the Mediterranean Sea are used to study the wind speed dependence of brightness temperature at L-band. During the EuroSTARRS airborne experiment, an L-band radiometer made measurements across a large wind speed gradient, enabling us to study this dependence at high wind speed. We compare our results with a two-scale emissivity model using several representations of the sea state spectrum. While the results are encouraging, unfortunately the accuracy of the measurements does not permit us to distinguish between the so-called twice Durden and Vesecky spectrum and the Elfouhaily spectrum above 7 m X s-1. …

Semi-Autonomous Human-Uav Interfaces For Fixed-Wing Mini-Uavs, Randal Beard, Michael A. Goodrich, Morgan Quigley

Faculty Publications

Sponsorship: DARPA, AFOSR. We present several human-robot interfaces that support real-time control of a small semi-autonomous UAV. These interfaces are designed for searching tasks and other missions that typically do not have a precise predetermined flight plan. We present a detailed analysis of a PDA interface and describe how our other interfaces relate to this analysis. We then offer quantative and qualitative performance comparisons of the interfaces, as well as an analysis of their possible real-world applications.

Why (Consumer) Bankruptcy?, Richard M. Hynes

Faculty Publications

No abstract provided.

Proving Negligence In Products Liability Litigation, David G. Owen

Faculty Publications

No abstract provided.

Lower Extremity Muscle Strength And Risk Of Self-Reported Hip Or Knee Osteoarthritis, Jennifer M. Hootman, Shannon J. Fitzgerald, Carol A. Macera, Steven N. Blair

Faculty Publications

Purpose: The purpose of this study was to investigate the gender-specific longitudinal association between quadriceps strength and self-reported, physician-diagnosed hip or knee osteoarthritis (OA).

Methods: Subjects were 3081 community-dwelling adults who were free of OA, joint symptoms and injuries, completed a maximum treadmill exercise test, had isokinetic knee extension and flexion and isotonic leg press strength measurements taken at baseline and returned at least one written follow-up survey. Multivariate logistic regression was used to estimate odds ratios and 95% confidence intervals.

Results: Women with moderate or high isokinetic quadriceps strength had a significantly reduced risk (55% to 64%) of hip …

President's Page, Samantha K. Hastings

Faculty Publications

No abstract provided.

Statutory Interpretation In Econotopia, Nathan B. Oman

Faculty Publications

Much of the debate in the recent revival of interest in statutory interpretation centers on whether or not courts should use legislative history in construing statutes. The consensus in favor of this practice has come under sharp attack from public choice critics who argue that traditional models of legislative intent are positively and normatively incoherent. This paper argues that in actual practice, courts look at a fairly narrow subset of legislative history. By thinking about the power to write that legislative history as a property right and legislatures as markets, it is possible to use Coase's Theorem and the concept …

Framing The Bride: Globalizing Beauty And Romance In Taiwan’S Bridal Industry, By Bonnie Adrian, Marc L. Moskowitz

Faculty Publications

No abstract provided.

Exploring The Relationship Between Accountability And Performance In Uk’S Private Finance Initiative, Istemi Demirag, Melvin J. Dubnick, M. Iqbal Khadaroo

Faculty Publications

There is growing evidence to suggest that accountability is implicated in New Public Management (NPM) reforms and performance measures. This paper explores and theorizes the nature of this ‘problematic’ relationship using four assumptions: warrantability, tractability, measurability and feasibility in the Private Finance Initiative (PFI) literature. We argue, using value for money (VFM) in PFI as a mechanism to connect accountability to performance, that the concept of accountability has lost its meaning through increased societal expectations, loss of trust to public authorities and their promises of accountability, and increasing conflict of objectives between public and private interest groups. We conclude that …

Electromagnetic Bias At Off-Nadir Incidence Angles, David V. Arnold, Floyd W. Millet, Karl F. Warnick

Faculty Publications

Sponsorship: JPL Subcontract 961461. Nadir and off-nadir measurements of electromagnetic (EM) bias measurements are presented and compared with an off-nadir bias model. Measurements of the bias were made during the BYU Off-Nadir Experiment (Y-ONE) in the months of March and April, 2003. Using radar measurements of the surface and backscattered power, the EM bias was computed at angles from nadir to 17º degrees. Simultaneous surface measurements from a laser rangefinder provide accurate measurements of the long wave surface parameters. An off-nadir bias model incorporating the effects of hydrodynamic modulation of short waves and tilt modulation of long waves is developed …

Polarization Of Nuclear Spins From The Conductance Of Quantum Wires, James A. Nesteroff, Yuriy V. Pershin Dr, Vladimir Privman

Faculty Publications

We devise an approach to measure the polarization of nuclear spins via conductance measurements. Specifically, we study the combined effect of external magnetic field, nuclear spin polarization, and Rashba spin-orbit interaction on the conductance of a quantum wire. Nonequilibrium nuclear spin polarization affects the electron energy spectrum making it time dependent. Changes in the extremal points of the spectrum result in time dependence of the conductance. The conductance oscillation pattern can be used to obtain information about the amplitude of the nuclear spin polarization and extract the characteristic time scales of the nuclear spin subsystem.

High Order Convergence With A Low Order Discretization Of The 2d Mfie, Clayton P. Davis, Karl F. Warnick

Faculty Publications

Moment method solutions to the MFIE are often less accurate for a given grid than corresponding solutions to the EFIE. We propose that the cause of this observation is the identity operator in the MFIE and show how regularizing the identity increases the convergence rate of the discretized 2D MFIE by three orders.

Rapid And Convenient Method For Preparing Masters For Microcontact Printing With 1–12 Μm Features, Lloyd W. Zilch, Ghaleb A. Husseini, Yit-Yian Lua, Michael V. Lee, Kevin R. Gertsch, Bennion R. Cannon, Robert M. Perry, Eric T. Sevy, Matthew C. Asplund, Adam T. Woolley, Matthew R. Linford

Faculty Publications

Mechanical scribing can be employed to create surfaces with recessed features. Through replica molding elastomeric copies of these scribed surfaces are created that function as stamps for microcontact printing. It is shown that this new method for creating masters for microcontact printing can be performed with a computer-controlled milling machine (CNC), making this method particularly straightforward and accessible to a large technical community that does not need to work in a particle free environment. Thus, no clean room, or other specialized equipment is required, as is commonly needed to prepare masters. Time-of-flight secondary ion mass spectrometry confirms surface pattering by …

Evidence Of Linear Lattice Expansion And Covalency Enhancement In Rutile Tio2 Nanocrystals, Guangshe Li, Juliana Boerio-Goates, Brian F. Woodfield, Liping Li

Faculty Publications

Lattice variations and bonding characteristics in rutile TiO2 nanocrystals were examined by x-ray diffraction and x-ray photoelectron spectroscopy. With a reduction in the physical dimensions, rutile TiO2 nanocrystals show a linear lattice expansion and an anomalous covalency enhancement in apparent contradiction to the ionicity increase in BaTiO3 and CuO nanocrystals as reported recently by S. Tsunekawa et al. [Phys. Rev. Lett. 2000, 85, 3440] and V. R. Palkar et al. [Phys. Rev. B 1996, 53, 2167]. A surface defect dipole model is proposed to explain these physical phenomena in terms of the strong interactions among the surface dipoles that produce …