Digital Commons Network^™

A Quantitative And Standardized Robotic Method For The Evaluation Of Arm Proprioception After Stroke, Lucia Simo, Claude Ghez, Lior Botzer, Robert A. Scheidt

Biomedical Engineering Faculty Research and Publications

Stroke often results in both motor and sensory deficits, which may interact in the manifested functional impairment. Proprioception is known to play important roles in the planning and control of limb posture and movement; however, the impact of proprioceptive deficits on motor function has been difficult to elucidate due in part to the qualitative nature of available clinical tests. We present a quantitative and standardized method for evaluating proprioception in tasks directly relevant to those used to assess motor function. Using a robotic manipulandum that exerted controlled displacements of the hand, stroke participants were evaluated, and compared with a control …

A Novel Cable-Driven Robotic Training Improves Locomotor Function In Individuals Post-Stroke, Ming Wu, Jill M. Landry, Sheng-Che Yen, Brian D. Schmit, T. George Hornby, Miriam Rafferty

Biomedical Engineering Faculty Research and Publications

A novel cable-driven robotic gait training system has been tested to improve the locomotor function in individuals post stroke. Seven subjects with chronic stroke were recruited to participate in this 6 weeks robot-assisted treadmill training paradigm. A controlled assistance force was applied to the paretic leg at the ankle through a cable-driven robotic system. The force was applied from late stance to mid-swing during treadmill training. Body weight support was provided as necessary to prevent knee buckling or toe drag. Subjects were trained 3 times a week for 6 weeks. Overground gait speed, 6 minute walking distance, and balance were …

Effects Of Environmental Variables On Food Consumption, Denise Eslinger

Dissertations and Theses @ UNI

Overweight and obesity is a growing epidemic among adults, adolescents, and children in the United States. Since 1980, rates of obesity have doubled among adults and tripled among children, and college students are not immune to this trend. This may be due, in part, to portion sizes that exceed individuals' caloric needs. Although many studies have demonstrated that people's food consumption is highly influenced by environmental factors ( e.g., the size of a portion that is given), there has been very little theoretical work exploring the reasons for this influence. To determine if portion size would affect consumption when a …

The Value Of Leisure In Coping With Natural Disaster: A Case Study In The Aftermath Of Hurricane Katrina, Germaine Jackson

Dissertations and Theses @ UNI

The late twentieth and early twenty-first centuries have witnessed more than their share of cataclysmic events, both natural and human-made. Most notable is Hurricane Katrina, a category 5 storm that ravaged the coasts of Louisiana and Mississippi. The infamous history of Hurricane Katrina's devastation stems from a couple of factors. First, the death toll reached what, for Americans, was a shockingly high figure of 1,577 people. Second, and more socially and politically relevant, was the federal government's mismanagement of the crisis.

The purpose of this study was to examine the role of leisure services available to adolescents following the traumatic …

Instrument Independent Diffuse Reflectance Spectroscopy, Bing Yu, Henry L. Fu, Nirmala Ramanujam

Biomedical Engineering Faculty Research and Publications

Diffuse reflectance spectroscopy with a fiber optic probe is a powerful tool for quantitative tissue characterization and disease diagnosis. Significant systematic errors can arise in the measured reflectance spectra and thus in the derived tissue physiological and morphological parameters due to real-time instrument fluctuations. We demonstrate a novel fiber optic probe with real-time, self-calibration capability that can be used for UV-visible diffuse reflectance spectroscopy in biological tissue in clinical settings. The probe is tested in a number of synthetic liquid phantoms over a wide range of tissue optical properties for significant variations in source intensity fluctuations caused by instrument warm …

Energy Deposition In The Breast During Ct Scanning: Quantification And Implications For Dose Reduction, Franco Rupcich, Iacovos Kyprianou, Andreu Badal, Taly Gilat Schmidt

Biomedical Engineering Faculty Research and Publications

Studies suggest that dose to the breast leads to a higher lifetime attributable cancer incidence risk from a chest CT scan for women compared to men. Numerous methods have been proposed for reducing dose to the breast during CT scanning, including bismuth shielding, tube current modulation, partial-angular scanning, and reduced kVp. These methods differ in how they alter the spectrum and fluence across projection angle. This study used Monte Carlo CT simulations of a voxelized female phantom to investigate the energy (dose) deposition in the breast as a function of both photon energy and projection angle. The resulting dose deposition …

The Social Origin Of Violent Behavior, Todd Arthur Mensink

Dissertations and Theses @ UNI

This study examines the social origins of extremely violent behavior. Numerous explanations of violent offenders have focused on biological, psychological, environmental or a combination of these factors to explain violence. Most explanations of violent behavior fail to take a holistic approach to understand the cause of violent behavior. This study is an analysis of the applicability of the violentization theory. Data was obtained through in-depth semi-structured interviews from six violent offenders in a residential treatment faciIity in the Midwest. Findings indicate that for most offenders, the violentization theory is consistent with their social experiences. However, two exceptions pertained to the …

Reducing Mass Incarceration: Lessons From The Deinstitutionalization Of Mental Hospitals In The 1960s, Bernard Harcourt

Faculty Scholarship

In a message to Congress in 1963, President John F. Kennedy outlined a federal program designed to reduce by half the number of persons in custody. The institutions at issue were state hospitals and asylums for the mentally ill, and the number of such persons in custody was staggeringly large, in fact comparable to contemporary levels of mass incarceration in prisons and jails. President Kennedy's message to Congress – the first and perhaps only presidential message to Congress that dealt exclusively with the issue of institutionalization in this country – proposed replacing state mental hospitals with community mental health centers, …

Post-Graduate Settlement Patterns: Tuition Reciprocity And Its Impact On Graduate Retention In Iowa, Minnesota, And Wisconsin, Andrew Miles Duggan

Dissertations and Theses @ UNI

This research project sought to discover the potential role participating in a tuition reciprocity program had on affecting a state's ability to stem the impact of brain drain. In order to do this, alumni records were analyzed from the University of Northern Iowa (UNI), Minnesota State University-Mankato (MSU), and the University of Wisconsin-Eau Claire (UWEC). They were chosen because these schools serve as regional institutions, and realistically would be expected to compete for the same prospective students. Datasets were collected for general locations (ZIP codes), gender, and degree majors for those who graduated in 1999 and 2004 - five and …

Family Law Scholarship Goes To Court: Functional Parenthood And The Case Of Debra H. V. Janice R., Suzanne B. Goldberg, Harriet Antczak, Mark Musico

Faculty Scholarship

Family law literature, while diverse in its exploration of contemporary families, also offers important threads of consensus. These strong points of coherence, when brought together with relevant case law, can be a useful means of advancing the academic conversation as well as engaging directly with courts to shape the law's development.

In a field as complex as family law, myriad academic viewpoints on any given issue often make it difficult to imagine scholarly discussion having utility for courts. As we aim to show here, however, amicus briefs can be important vehicles for synthesizing the literature, highlighting basic points of consensus …

The Role Of Work Environment On Employee Job Engagement, Micayla Michelle Evers

Dissertations and Theses @ UNI

Employee job engagement is an increasingly popular and important construct in organizations in the United States. Job engagement is widely considered to have a strong influence on employee job performance, turnover rates, burnout, etc. Many variables contribute to this important construct, and work environment encompasses one of these variables. This study addresses the impact of physical work environment and social work environment in predicting employee job engagement. The current study found that both physical work environment and social work environment were significant predictors of employee job engagement and that physical work environment had a slightly larger impact. Exploratory analyses were …

Metabolic Restructuring During Energy-Limited States : Insights From Artemia Franciscana Embryos And Other Animals., Steven Hand, Michael Menze, Apu Borcar, Yuvraj Patil, Joseph Covi, Julie Reynolds, Mehmet Toner

Faculty and Staff Scholarship

Many life history stages of animals that experience environmental insults enter developmental arrested states that are characterized by reduced cellular proliferation, with or without a concurrent reduction in overall metabolism. In the case of the most profound metabolic arrest reported in invertebrates, i.e., anaerobic quiescence in Artemia franciscana embryos, acidification of the intracellular milieu is a major factor governing catabolic and anabolic downregulation. Release of ion gradients from intracellular compartments is the source for approximately 50% of the proton equivalents needed for the 1.5 unit acidification that is observed. Recovery from the metabolic arrest requires re-sequestration of the protons with …

Lea Proteins During Water Stress : Not Just For Plants Anymore., Steven Hand, Michael Menze, Mehmet Toner, Leaf Boswell, Daniel Moore

Faculty and Staff Scholarship

Late embryogenesis abundant (LEA) proteins are extremely hydrophilic proteins that were first identified in land plants. Intracellular accumulation is tightly correlated with acquisition of desiccation tolerance, and data support their capacity to stabilize other proteins and membranes during drying, especially in the presence of sugars like trehalose. Exciting reports now show LEA proteins are not restricted to plants; multiple forms are expressed in desiccation-tolerant animals from at least four phyla. We evaluate here the expression, subcellular localization, biochemical properties and potential functions of LEA proteins in animal species during water stress. LEA proteins are intrinsically unstructured in aqueous solution, but …

Nano-Electromechanical Zero-Dimensional Freestanding Nanogap Actuator, Jun Hyun Han, Norimasa Yoshimizu, T.J. Cheng, Michael Ziwisky, S.A. Bhave, A. Lal, Chung-Hoon Lee

Electrical and Computer Engineering Faculty Research and Publications

Micromachined free standing nanogap with metal electrodes is presented. The gap size is as small as 17 nm, and can be reduced further with electrostatic or piezoelectric actuation. The nanoscale gap is fabricated by industrial standard optical lithography and anisotropic wet chemical Si etching. Electron transport between the metal electrodes with optical stimulus enhancing photon-electron coupling (plasmon) is presented.

Conformation And Ion Transport Of Neuronal Uncoupling Proteins: Ucp2, Ucp4, And Ucp5, Tuan Hoang

Theses and Dissertations (Comprehensive)

Located in the inner mitochondrial membrane of brown adipose tissue, uncoupling protein -1 (UCP1) dissipates the proton electrochemical gradient, causing reduction in the rate of ATP synthesis, and generates heat by non-shivering thermogenesis. Three other UCP homologs (UCP2, UCP4 and UCP5), expressed in neurons, are suggested to have potential roles in the function and protection of the central nervous system (CNS). Up to date, structural information for UCPs still remains limited. Extensive biochemical studies on UCP2 have provided adequate evidence for its participation in proton and anion transport. So far, no functional studies in proteoliposome systems have been performed on …

The Role Of The Acidic Domain Of The Toc159 Protein Import Receptor Family In Toc Complex Assembly In Arabidopsis Thaliana, Yi Chen

Theses and Dissertations (Comprehensive)

Most chloroplast proteins are encoded in the nucleus and translated in the cytosol with an N-terminal cleavable transit peptide, which can be recognized by the translocon at the outer envelope membrane of chloroplasts (Toc complex). The core Toc complex is composed of two GTPases, Toc159 and Toc34, and the Toc75 channel. atToc159, atToc132 and atToc120 are homologues of the Toc159 family in Arabidopsis, and have been shown to assemble into structurally and functionally distinct Toc complexes. Targeting of atToc159 to the chloroplast outer membrane is mediated by its GTPase (G-) domain. However, the role of the acidic (A-) domain in …

Gingival Abscess Removal Using A Soft-Tissue Laser, Soni Prasad, Edward A. Monaco, Jr., Sebastiano Andreana

School of Dentistry Faculty Research and Publications

Gingival abscess, also known as parulis, is defined as a localized, acute inflammatory lesion that may arise from a number of sources, including microbial plaque infection, trauma, and foreign body impaction. It often presents as a smooth, fluctuant, red-color swelling and can occasionally be painful. It is generally limited to marginal and interdental gingiva. Based on its location it has been classified as a type of periodontal abscess which does not involve any attachment loss. The treatment comprises of removal of the cause and, in acute situations, excision of the abscess. A typical gingival abscess is easy to diagnose; however, …

Examination Of The Mitochondrial Health Of The Basigin Null Mouse Retina, Kristine Anne V. Pablo

UNF Graduate Theses and Dissertations

Basigin gene products are cell adhesion molecules that are expressed by photoreceptor cells, Müller cells and endothelial cells of the mammalian retina. Previous studies have suggested that a lactate shuttle exists between the photoreceptor cells and the Müller cells, with Basigin being an essential component in this shuttle. Deletion of the Basigin gene in mice results in blindness with an eventual retinal degeneration. It was hypothesized that the lactate shuttle between photoreceptors and Müller cells does not form in Basigin null mice and that the blindness is attributed to faulty photoreceptor metabolism. Therefore, the purpose of this study was to …

Protein Expression Of Hypoxia-Inducible Factor 1-Alpha (Hif-1Α) In Spot (Leiostomus Xanthurus) Under Acute Exposure To Hypoxic Treatments : A Laboratory-Field Comparison Study, Mason James Smith

UNF Graduate Theses and Dissertations

Hypoxia in coastal estuaries is a topic of increasing concern, as the magnitude and frequency of hypoxic events have increased over the past several decades. These hypoxic events are highly detrimental to the coastal biota, particulary fish. The hypoxia-inducible factor 1α (HIF-1α) protein was used as a candidate biomarker for deciphering exposure of fish to hypoxic events. In chapter one, Spot (Leiostomus xanthurus) were exposed to three treatment groups of DO (means 7.32 ± 0.18, 5.15 ± .37, and 2.57 ± 0.01 mg Lˉ¹ DO) and sampled (n = 5) at time zero, 36 and 72-h for each treatment. The …

Determining Students' Working Conceptions Of Evolution Through Formative Assessment Probes, Danielle J. Burras

Dissertations and Theses @ UNI

Students entering a science classroom bring with them many ideas about science content and the nature of science. Some of those ideas are not congruent with current scientific explanations and can be called working conceptions. Working conceptions have the ability to impact how students respond to new information and whether or not they integrate it into their lives outside of the classroom. Identifying what working conceptions students have prior to instruction allows educators to determine how instruction should be formatted and what concepts may need extra focus. The purpose of this investigation was to determine the effectiveness of formative assessment …

Comparison Of Wechsler Memory Scale–Fourth Edition (Wms–Iv) And Third Edition (Wms–Iii) Dimensional Structures: Improved Ability To Evaluate Auditory And Visual Constructs, James B. Hoelzle, Nathaniel W. Nelson, Clifford A. Smith

Psychology Faculty Research and Publications

Dimensional structures underlying the Wechsler Memory Scale–Fourth Edition (WMS–IV) and Wechsler Memory Scale–Third Edition (WMS–III) were compared to determine whether the revised measure has a more coherent and clinically relevant factor structure. Principal component analyses were conducted in normative samples reported in the respective technical manuals. Empirically supported procedures guided retention of dimensions. An invariant two-dimensional WMS–IV structure reflecting constructs of auditory learning/memory and visual attention/memory (C1 = .97; C2 = .96) is more theoretically coherent than the replicable, heterogeneous WMS–III dimension (C1 = .97). This research suggests that the WMS–IV may have greater utility in identifying lateralized memory dysfunction.

An Analysis Of Marine Reserve Co-Management Within The Caribbean: Factors Influencing Stakeholder Participation, Sarah Lindley Smith

Open Access Dissertations

The goal of the research is to critically analyze co-management as a tool for sustainable marine resource management through improved understanding of stakeholder participation in co-management. This critique is based on the underlying hypothesis that co-management will lead to greater representation and participation of stakeholders in management and that successful co-management is that which encompasses a wide range of stakeholder perspectives in the decision-making process. This study investigates variability in the involvement of stakeholders in selected examples of existing co-management arrangements developed to manage marine reserves within the wider Caribbean. An understanding of the factors contributing to and dynamics of …

Comprehensive Creativity When We Need It, Review Of "The Cambridge Handbook Of Creativity," Edited By James C. Kaufman And Robert J. Sternberg, Stephen J. Guastello

Psychology Faculty Research and Publications

Reviews the book, The Cambridge handbook of creativity edited by James C. Kaufman and Robert J. Sternberg (see record 2010-21837-000). The title suggests that The Cambridge handbook of creativity is an encyclopedic collection of all the major chunks of knowledge connected to creative behavior. Although it does not disappoint in that regard, the contributing authors do a superb job of capturing the coherence and the theoretical and thematic developments of their respective areas. Overall the reviewer would recommend The Cambridge handbook of creativity to serious researchers in creativity and anyone who wants to be seriously creative. Psychologists and educators are …

The Effects Of Anti-Price Gouging Legislation On Supply Chain Dynamics, Jason Edward Maynard

Master's Theses

The purpose of this thesis is to model the effects of anti-price gouging (APG) legislation on the costs to businesses during the recovery period of a disaster. A system dynamics model of a business’s replenishment procedures is used to simulate the effects of APG legislation on business performance. Economists have published expansive research on the effects of price ceilings on supply and demand, but there is little research evidence on the operational consequences of price ceiling legislation on business costs. APG legislation increases consumer’s forward buying and shortage gaming after a disaster by removing price incentives to be frugal. Forward …

Beyond Individualism In Law And Economics, Robert B. Ahdieh

Faculty Scholarship

The study of law and economics was built upon two pillars. The first is the familiar assumption of individual rationality. The second, less familiar, is the principle of methodological individualism. Over the last twenty years, law and economics has largely internalized behavioral critiques of the rationality assumption. By contrast, the field has failed to appreciate the implications of growing challenges to its methodological individualism. Where social norms shape individual choices, network externalities are strong, coordination is the operative goal, or information is a substantial determinant of value, a methodology strongly oriented to the analysis of individuals overlooks at least as …

United States Of America, Michael B. Gerrard, Gregory E. Wannier

Faculty Scholarship

The prospect of carbon liability in the United States is a relatively recent phenomenon. It is only in the last decade that US environmental lawyers and policy-makers have begun to turn their attention to climate change, as climate-related litigation has surged, government action on several fronts has begun, and climate change has generally been recognised as a factor to consider in decision-making across the economy. This chapter lays out existing options to establish liability for greenhouse gas (‘GHG’) emissions along legislative, regulatory and judicial channels.

Comparative Law: Problems And Prospects, George A. Bermann, Patrick Glenn, Kim Lane Scheppele, Amr Shalakany, David V. Snyder, Elizabeth Zoller

Faculty Scholarship

The following is an edited transcript of the closing plenary session of the XVIIIth International Congress of Comparative Law. The session took place on Saturday, July 31, 2010, in Washington, D.C., at the conclusion of the week-long congress, which is held quadrennially by the International Academy of Comparative Law (Académie Internationale de Droit Comparé). The remarks were given in a mix of French and English, but for ease of reading the transcript below is almost entirely in English.

The Fisk-Vanderbilt Master’S-To-Ph.D. Bridge Program: Recognizing, Enlisting, And Cultivating Unrealized Or Unrecognized Potential In Underrepresented Minority Students, Keivan G. Stassun, Susan P. Sturm, Kelly Holley-Bockelmann, Arnold Burger, David J. Ernst, Donna Webb

Faculty Scholarship

The Fisk-Vanderbilt Masters-to-Ph.D. Bridge Program is a model for substantially increasing the number of underrepresented minority students earning doctoral degrees in the physical sciences. The program presently leads the nation in master’s degrees in physics for African-Americans, and is one of the top ten producers of physics master’s degrees among all U.S. citizens. The program is on pace to become the nation’s top producer of underrepresented minority Ph.Ds. in physics, astronomy, and materials science. We summarize the main features of the program, including two of its core strategies: Partnering a minority-serving institution and a major research university through collaborative research, …

Communicating During A Crisis: An Analysis Of H1n1 Documents, Ian Patrick Hopkins

Dissertations and Theses @ UNI

In April, 2009 a mysterious illness started to spread from Mexico City into the United States and quickly through out the rest of the world. Initially known as Swine Flu, it was quickly became known by its scientific name novel H 1 N 1. The H 1 N 1 pandemic is of particular note because of the rapid spread throughout the world. Additionally, the H 1 N 1 pandemic provides a way to study organizational responses during a health pandemic. Previous literature has explored how organizations have responded during pandemics, but have not examined pandemics from an organizational level. This …

Examining The Use Of Collocations In Natural Language Processing, Patrick Anthony Burke

Dissertations and Theses @ UNI

Studies in Natural Language Processing are often dedicated to defining the lexicon and grammar rules of individual languages. It is a common understanding that virtually all statements that a language user encounters are unique constructions that have never been seen before. Because of this, there has been very little modem research regarding the use of repeated language when attempting to provide computers with language processing functionality. It seems reasonable that most statements we use on a daily basis are completely new when they are evaluated in their entirely. However, it is possible that smaller portions of these statements are reused. …