Digital Commons Network^™

An Investigation On How Operational Wind Turbines Are Used In Secondary Classrooms, James Smith

Dissertations and Theses @ UNI

Through a review of literature, it was found that many schools in the United States are installing operational wind turbines, but it was unclear how teachers were using them in their science, technology, engineering and mathematics (STEM) classrooms. In order to identify how these operational wind turbines were being used and to create a list of expectations for schools with operational wind turbines, this exploratory study surveyed STEM teachers from all across the United States. A stratified random sample was created using a U.S. Department of Energy database of schools with operational wind turbines. Administrators from the selected schools identified …

Development Of An Optimization Model To Determine Sampling Levels, Zlatan Hamzic

Masters Theses

"As the complexity of multi-component products increases the quality of these products becomes increasingly difficult to control. The first step to manufacturing a quality product is making sure that the components of the product meet specifications. Product quality can be controlled through sampling inspection of the components. Two models were developed in this research to determine the optimal sampling levels for incoming lots containing parts for production and assembly of multi-component systems. The main objective of the first model is to minimize the expected cost that is associated with a nonconforming item reaching assembly. In this model the time available …

Use Of Ultra-High Performance Concrete To Mitigate Impact And Explosive Threats, Julie Anne Willey

Masters Theses

"This study is a continuation of research conducted by Natalia Carey, Anthony Wulfers, and Dr. John Myers under the DHS ALERT Center. Carey investigated the use of polyurea coating systems to mitigate close range blast threats on wall panels. Wulfers continued this by using both polyurea coatings as well as a sacrificial wood fiber fly ash (WF-FA) layer to try to get increased performance. This research was aimed at the study of ultra-high performance concrete (UHPC) for the use in impact and blast mitigation. There is little information on the performance of UHPC under close range blast loading; therefore it …

Sybil Detection In Vehicular Networks, Muhammad Ibrahim Almutaz

Masters Theses

"A Sybil attack is one where an adversary assumes multiple identities with the purpose of defeating an existing reputation system. When Sybil attacks are launched in vehicular networks, an added challenge in detecting malicious nodes is mobility that makes it increasingly difficult to tie a node to the location of attacks. In this thesis, we present an innovative protocol for Sybil detection in vehicular networks. Considering that vehicular networks are cyber-physical systems integrating cyber and physical components, our technique exploits well grounded results in the physical (i.e., transportation) domain to tackle the Sybil problem in the cyber domain. Compared to …

A Master Of Music Recital In Flute, Sarah June Coleman

Dissertations and Theses @ UNI

Sarah June Coleman presented a graduate flute recital Tuesday, March 26, 2013 at six o'clock in the evening. This recital was performed in Davis Hall of the Gallagher-Bluedorn Performing Arts Center at the University of Northern Iowa and was given in partial fulfillment of the requirements of a Master of Music degree with an emphasis in flute performance. Musicians assisting Ms. Coleman on the recital were pianist Serena Hou, flutist Hannah Leffler, violinists Anneliese Gentzsch and Laura Hebbeln, violist Alyssa Adamec, cellist Matt McClellan, and conductor Ashley Smith. The program opened with the four movement baroque Concerto in E minor …

Effects Of Machining Parameters And Cooling Strategies On Cutting Forces And Surface Integrity In High-Speed Slot End-Milling Of Titanium Alloy, Emenike Chukwuma

Masters Theses

“Paper 1 presents the results of the investigations of the effects of cooling strategies [Emulsion cooling, Minimum Quantity Lubrication (MQL) and Liquid Nitrogen (LN₂)] and machining parameters (feed rate and spindle speed) on cutting force components, cutting temperature and tool wear during slot end-milling of titanium Ti-6Al-4V workpiece. All machining experiments were conducted using four-flute 0.5 inch diameter uncoated solid carbide end-mill on Cincinnati Milacron, Sabre 750 vertical machining center equipped with Acramatic 2100 controller. Cutting force components were acquired and tool wear was indirectly measured from maximum cutting force variation per slot from the first pass to …

Effects Of Machining Parameters On Cutting Forces,Shear Angle And Friction In Orthogonal Turning Of Titanium Alloys, Hilary Onyishi

Masters Theses

“Paper 1 presents the results of the investigations on the effects of machining parameters on cutting forces, shear angle and friction in orthogonal turning of titanium alloy tube. Uncoated fine-grained cemented tungsten carbide (WC/Co) and Physical Vapour Deposition (PVD) TiAlN coated grade turning tool inserts, with 5⁰ and 15⁰ rake angles were used under low and high cutting speeds of 120 and 240m/min, at three different feedrates (0.05, 0.075 and 0.1 mm/rev). The experiments were conducted under flooded coolant to reflect what is practically obtainable in manufacturing industries. The experimental results show that cutting forces at two selected cutting speeds …

Rotary Displacement Piezoelectric Energy Harvester, Headman Sanei

Masters Theses

“This study proposes a novel piezoelectric energy harvester for rotary motion applications. It is based on an annular unimorph plate, mounted on a shaft rotating at a constant angular velocity, under constant amplitude point-wise force. The mathematical model and the analysis was proposed for the inverse problem of a rotating disk under a static stationary force. The disk, however, is assumed to be stationary subjected to a traveling force. The distributed parameter electromechanical equations governing the behavior of the system are provided in closed-form, incorporating both an AC and a simple rectifier circuit. The performance of the energy harvester was …

Graduate Recital In Piano, Tana Denning

Dissertations and Theses @ UNI

On the 22nd of February, 2013, Tana Denning presented a half-recital in partial completion of her master's degree in Piano Performance and Pedagogy. The recital was held at 6pm in Davis Hall at the University of Northern Iowa. Pieces on the program included two preludes by Debussy, Italian Concerto by Bach, an original arrangement of a traditional Irish melody, and Scherzo No. 4 by Chopin. The second half of Ms. Denning's recital requirement was spent on a pedagogical project regarding the use of folk music in piano lessons. This project is outlined at the end of the abstract.

What Does Environmental Justice Mean In An Era Of Global Climate Change?, Michael B. Gerrard

Faculty Scholarship

The 1990s saw the emergence of the issue of environmental justice – the disproportionate exposure of low-income and minority communities to environmental hazards - into the U.S. political sphere. The 2000s saw the emergence of global climate change as a political concern. Neither has led to significant legislation at the federal level, and thus old laws designed for different purposes are being utilized with decidedly mixed results.

This article addresses the confluence of environmental justice and global climate change. The two interact in complex ways, as do the approaches to dealing with them both.

The magnitude of the climate challenge …

Intersectionality: Mapping The Movements Of A Theory, Devon Carbado, Kimberlé W. Crenshaw, Vicki M. Mays, Barbara Tomlinson

Faculty Scholarship

Very few theories have generated the kind of interdisciplinary and global engagement that marks the intellectual history of intersectionality. Yet, there has been very little effort to reflect upon precisely how intersectionality has moved across time, disciplines, issues, and geographic and national boundaries. Our failure to attend to intersectionality’s movement has limited our ability to see the theory in places in which it is already doing work and to imagine other places to which the theory might be taken. Addressing these questions, this special issue reflects upon the genesis of intersectionality, engages some of the debates about its scope and …

Religious Toleration And Claims Of Conscience, Kent Greenawalt

Faculty Scholarship

One aspect of the issue of toleration of religion is how far the government and others should recognize religious claims of conscience. Such claims will be present in any liberal democracy. The particular controversies on which attention is mainly focused shift, but certain underlying themes remain.

In this essay, I outline what I take to be the major issues about government recognition of religious claims of conscience. I then address the special problems created when a claim of conscience ends up competing with an opposing claim of conscience or with basic premises about fairness and justice. We can conceive of …

Our Place In The World: A New Relationship For Environmental Ethics And Law, Jedediah S. Purdy

Faculty Scholarship

Forty years ago, at the birth of environmental law, both legal and philosophical luminaries assumed that the new field would be closely connected with environmental ethics. Instead, the two grew dramatically apart. This Article diagnoses that divorce and proposes a rapprochement. Environmental law has always grown through changes in public values; for this and other reasons, it cannot do so without ethics. Law and ethics are most relevant to each other when there are large open questions in environmental politics: lawmakers act only when some ethical clarity arises; but law can itself assist in that ethical development. This process is …

Law Schools, Leadership, And Change, Susan P. Sturm

Faculty Scholarship

Law schools train many of the nation’s leaders. As Professor Fred Rodell observed, “it is the lawyers who run our civilization for us – our governments, our business, our private lives.” The legal profession was already closely linked to leadership at the founding of the country, when lawyers constituted almost half of the signers of the Declaration of Independence and more than half of the members of the Constitutional Convention. Lawyers now bear major responsibility for leading the institutions that structure the governance, education, and day-to-day lives of the polity. Ten percent of the CEOs of the top fifty companies …

Reducing Legal Hurdles To Combined Heat And Power In New York, Michael B. Gerrard

Faculty Scholarship

Combined heat and power (CHP or cogeneration) is the simultane­ous production of electricity and thermal energy from a single fuel source. Most CHP systems in New York City use natural-gas fired turbines or reciprocating engines to generate electric­ity and then capture heat from the com­bustion generator’s exhaust stream and cooling systems.

The President's Enforcement Power, Kate Andrias

Faculty Scholarship

Enforcement of law is at the core of the President’s constitutional duty to “take Care” that the laws are faithfully executed, and it is a primary mechanism for effecting national regulatory policy. Yet questions about how presidents oversee agency enforcement activity have received surprisingly little scholarly attention. This Article provides a positive account of the President’s role in administrative enforcement, explores why presidential enforcement has taken the shape it has, and examines the bounds of the President’s enforcement power. It demonstrates that presidential involvement in agency enforcement, though extensive, has been ad hoc, crisis-driven, and frequently opaque. The Article thus …

Copyright Infringement Markets, Shyamkrishna Balganesh

Faculty Scholarship

Should copyright infringement claims be treated as marketable assets? Copyright law has long emphasized the free and independent alienability of its exclusive rights. Yet, the right to sue for infringement – which copyright law grants authors in order to render its exclusive rights operational – has never been thought of as independently assignable, or indeed as the target of investments by third parties. As a result, discussions of copyright law and policy rarely consider the possibility of an acquisition or investment market emerging for actionable copyright claims and the advantages that such a market might hold for copyright’s goals, objectives, …

The Uneasy Case Against Copyright Trolls, Shyamkrishna Balganesh

Faculty Scholarship

The copyright troll and the phenomenon of copyright trolling have thus far received surprisingly little attention in discussions of copyright law and policy. A copyright troll refers to an entity that acquires a tailored interest in a copyrighted work with the sole objective of enforcing claims relating to that work against copiers in a zealous and dogmatic manner. Not being a creator, distributor, performer, or indeed user of the protected work, the copyright troll operates entirely in the market for copyright claims. With specialized skills in monitoring and enforcing copyright infringement, the troll is able to lower its litigation costs, …

Components Of The Complete Blood Count As Risk Predictors For Coronary Heart Disease: In-Depth Review And Update, Mohammad Madjid, Omid Fatemi

The Texas Heart Institute Journal

Atherosclerosis is an inflammatory disease, and several inflammatory biomarkers, such as C-reactive protein, have been used to predict the risk of coronary heart disease. High white blood cell count is a strong and independent predictor of coronary risk in patients of both sexes, with and without coronary heart disease. A high number of white blood cells and their subtypes (for example, neutrophils, monocytes, lymphocytes, and eosinophils) are associated with the presence of coronary heart disease, peripheral arterial disease, and stroke. The coronary heart disease risk ratios associated with a high white blood cell count are comparable to those of other …

Coronary Artery Diameter Related To Calcium Scores And Coronary Risk Factors As Measured With Multidetector Computed Tomography: A Substudy Of The Accuracy Trial, Yasmin S Hamirani, Khurram Nasir, Emil Avanes, Jigar Kadakia, Matthew J Budoff

The Texas Heart Institute Journal

Arterial remodeling, an early change of atherosclerosis, can cause dilated arterial diameter. We measured coronary artery diameter with use of noncontrast 64-slice multidetector computed tomography (MDCT), and studied its association with coronary artery calcium levels and traditional coronary risk factors.

We included 140 patients from the ACCURACY trial whose noncontrast MDCT images showed measurable coronary arteries. Using 3 measurements of left main coronary artery (LMCA) and right coronary artery (RCA) diameters within 3 mm of the ostium, we associated the results with traditional coronary risk factors and calcium scores.

The prevalence of LMCA and RCA calcium was 22% and 51%, …

Emerging Modifiable Risk Factors For Cardiovascular Disease In Women: Obesity, Physical Activity, And Sedentary Behavior, Ann Smith Barnes

The Texas Heart Institute Journal

No abstract provided.

Foreign Affairs Federalism: A Revisionist Approach, Daniel Abebe, Aziz Z. Huq

Faculty Scholarship

In April 2010, the Arizona legislature enacted the Support Our Law Enforcement and Safe Neighborhoods Act. Commonly known as SB 1070, the law created a slate of new criminal offenses and arrest powers covering aliens within Arizona's borders. SB 1070 proved divisive. It inspired copycat legislation in several states, provoked sharp criticism from the legal academy, and – most relevant here – catalyzed a lawsuit by the U.S. Department of Justice seeking a preliminary injunction against the state law on the ground that it was preempted by federal law. Initially, the federal government's litigation prospects seemed dim. One term before …

Design Evolution And Properties Of Superconducting Parallel-Bar Rf-Dipole Detecting And Crabbing Cavities, S. U. De Silva, J. R. Delayen

Physics Faculty Publications

Deflecting/crabbing cavities serve a variety of purposes in different accelerator applications, primarily in separating a single beam into multiple beams and in rotating bunches for head-on collisions at the interaction point in particle colliders. Deflecting/crabbing cavities are also used for transverse and longitudinal emittance exchange in beams, x-ray pulse compression, and for beam diagnostics. Compact superconducting deflecting/crabbing cavities are under development due to strict dimensional constraints and requirements for higher field gradients with low surface losses. The TEM-like superconducting parallel-bar cavity supports low operating frequencies, thus making the design favorable for many of the deflecting/crabbing cavity applications. The design of …

Systematic Review Of Laser And Other Light Therapy For The Management Of Oral Mucositis In Cancer Patients, Cesar Migliorati, Ian Hewson, Rajesh V. Lalla, Heliton Spindola Antunes, Cherry L. Estilo, Brian D. Hodgson, Nilza Nelly Fontana Lopes, Mark M. Schubert, Joanne Bowen, Sharon Elad

School of Dentistry Faculty Research and Publications

Background The aim of this study was to review the available literature and define clinical practice guidelines for the use of laser and other light therapies for the prevention and treatment of oral mucositis.

Methods A systematic review was conducted by the Mucositis Study Group of the Multinational Association of Supportive Care in Cancer/International Society of Oral Oncology. The body of evidence for each intervention, in each cancer treatment setting, was assigned an evidence level. Based onthe evidence level, one of the following three guideline determinations was possible: recommendation, suggestion, and no guideline possible.

Results A new recommendation was made …

Different Loading Times For Dental Implants: No Clinically Important Differences?, Gary L. Stafford

School of Dentistry Faculty Research and Publications

Data sources

The Cochrane Oral Health Group's Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL), Medline, and Embase databases were searched. Reference lists of identified articles were also scanned for relevant papers. There were no restrictions on language or date of publication.

Study selection

Randomised controlled trials (RCTs) of parallel group design and of split-mouth design including root-form osseointegrated dental implants having a follow-up of four months to one year after loading were included.

Data extraction and synthesis

Data were independently extracted, in duplicate, by at least two review authors. The outcome measures were prosthesis and implant failures …

In Tribute: M. Katherine B. Darmer, Tom Campbell, Erwin Chemerinsky, Bobby L. Dexter, Katherine M. Franke, Mark Osler, Marisa S. Cianciarulo, James L. Doti, Richard D. Fybel, Kirsten E. Gillibrand, Tiffany Chang

Faculty Scholarship

The editors of the Chapman Law Review respectfully dedicate this issue to Professor M. Katherine B. Darmer.

Dental Student Indebtedness: Where Did It Come From And Where Will It Lead?, Gary L. Stafford

School of Dentistry Faculty Research and Publications

Today’s dental school graduates are burdened by an ever-increasing amount of student loan debt from both their undergraduate and predoctoral educations. Although considered to be multifactorial in origin, this article explores the microeconomic theory of supply and demand as a source for rising tuition costs and subsequent educational debt. The historical context for the cost of a dental education is provided, and serious questions are posed about how this indebtedness might impact the future of the profession.

Preserving Alveolar Bone Growth Following Cervical Root Fracture: A Case Report, Tülin İleri Keçeli, Burak Kutlu, H. Cem Güngör

School of Dentistry Faculty Research and Publications

Root fracture injuries affect 0.5%–7% of permanent teeth. Although cervical root fractures are less frequent in children, their serious consequences and poor prognosis may lead to tooth loss. In this case presentation, we discuss a treatment approach chosen to preserve alveolar bone growth following a cervical root fracture in an 8-year-old boy.

Constitutional Uncertainty And The Design Of Social Insurance: Reflections On The Aca Case, Michael J. Graetz, Jerry L. Mashaw

Faculty Scholarship

The Health Care Case is best understood as a legal attack on the means but not the goals of the health care legislation. This emphasis on means rather than ends and on state over federal powers potentially poses significant risks for the complex institutional arrangements for social insurance that now exist and may imply harmful constraints on how Congress can restructure these programs to better meet the needs of the American people in the twenty-first-century economy. Not coincidentally, the new constitutional framework announced in the ACA decision favors those who want to dismantle rather than strengthen the nation’s social insurance …

Revolution In Manipulation Law: The New Cftc Rules And The Urgent Need For Economic And Empirical Analyses, Rosa M. Abrantes-Metz, Gabriel Rauterberg, Andrew Verstein

Faculty Scholarship

Three major banks have now admitted that their employees manipulated worldwide interest rates through the London Interbank Offered Rate (Libor), the most widely used interest rate index. Libor is the interest rate term for trillions of dollars of swaps and loans, and its manipulation may have been used to extract billions of dollars. These allegations come just as commodities manipulation law has been dramatically reformed and the Commodity Futures Trading Commission (CFTC) given vast new regulatory powers. This Article provides the first extended, scholarly analysis of the CFTC’s new anti-manipulation rules. We consider the difficulty the rules address: Commodities manipulation …