Digital Commons Network^™

Hierarchical Modeling: Biogeochemical Processes And Mechanisms That Drive Clay Nano-And Microfabric Development, Kenneth J. Curry, Richard H. Bennett, Paula J. Smithka, Matthew H. Hulbert

Faculty Publications

Conceptual scientific models of clay and clay fabric development can be constructed profitably by considering chemical and physical systems in terms of an ordered hierarchy. We develop here a hierarchical model of early stages of marine sediment development identifying processes and focusing on mechanisms. While the focus of our model is on mechanisms, the physical aspects of the hierarchy are cast in terms of the nanometer (nanofabric) level of organization of sediment fabric. This level is nested below the micrometer (microfabric) level that includes aggregates of clay signatures and is nested above the molecular level that includes edges and faces …

A Sense Of Things To Come: Future Research Directions In Sensory Marketing, Ryan S. Elder, Nilufer Z. Aydinoglu, Victor A. Barger, Cindy Caldara, Helen Haeeun Chun, Chan Jean Lee, Gina Mohr, Antonios Stamatogiannakis

Faculty Publications

The exciting exploration on sensory marketing presented in this book is just the foundation upon which to build future research. There are myriad unexplored questions and innumerable directions in which to take this research. Our goal in this chapter is not to provide an exhaustive array of these future directions, but rather to stimulate the reader into exploring new ideas. We present possible future directions for each sense individually (vision, audition, smell, touch, taste), and conclude with ideas for future research addressing the interplay among multiple senses within consumer behavior.

Impacts Of Marine Docks On Eelgrass In New England: A Spreadsheet-Based Model For Managers And Planners, David M. Burdick, Frederick T. Short, Gregg Moore

Faculty Publications

none

Deception, Decisions, And Investor Education, Jayne W. Barnard

Faculty Publications

Tens of millions of dollars each year are spent on investor education. Because older adults (those aged sixty and older) are disproportionately victims of investment fraud schemes, many educational programs are targeted at them. In this Article, Professor Barnard questions the effectiveness of these programs. Drawing on recent studies from marketing scholars, neurobiologists, social psychologists, and behavioral economists examining the ways in which older adults process information and make decisions, she offers a model of fraud victimization (the "deception/decision cycle") that explains why older adults are often vulnerable to investment fraud schemes. She then suggests that many of the factors …

First Parents: Reconceptualizing Newborn Adoption, James G. Dwyer

Faculty Publications

No abstract provided.

Constitutional Birthright: The State, Parentage, And The Rights Of Newborn Persons, James G. Dwyer

Faculty Publications

State parentage laws, dictating who a newborn child's first legal parents will be, have been the subject of constitutional challenges in several U.S. Supreme Court and many lower court decisions. All of those decisions, however, have focused on constitutional rights of adults (especially unwed biological fathers) who wish to become, or to avoid becoming, legal parents. Neither courts nor legal scholars have considered whether the children have any constitutional rights that constrain legislatures and courts in deciding which adults will be their legal parents. If a state enacted a parentage law that said, for example, that any child born to …

Family Law For The Underclass: Underscoring Law's Ideological Function, David Ray Papke

Faculty Publications

This article underscores the manner in which family law for the contemporary underclass assumes a distinctly ideological function. Marriage promotion programs not only urge members of the underclass to marry but also deplore their declining commitment to marriage as an institution. "Deadbeat dad" legislation suggests the failure of underclass fathers to pay child support regularly and on time is a major cause of poverty in American life. Adoption law facilitates the placement of underclass children in middle and upper-class families, insisting in the process that this must surely be best for the children. Overall, family law for the underclass suggests …

Investigating The Presuppositional Realm Of Biblical-Theological Methodology: Part 1: Dooyeweerd On Reason, Oliver Glanz

Faculty Publications

No abstract provided.

Detection Of Free-Ranging West Indian Manatees Trichechus Manatus Using Side-Scan Sonar, Daniel Gonzalez-Socoloske, Leon David Olivera-Gomez, Robert E. Ford

Faculty Publications

Turbid and tannin-stained waterways are difficult habitats to study and present problems with respect to the management of aquatic fauna, and especially of endangered and cryptic animals such as manatees Trichechus spp. Linnaeus. Throughout much of the range of the extant trichechid species (T. inunguis, T. manatus, and T. senegalensis), the scientific approaches that are used successfully to document the status of the Florida subspecies (T. m. latirostris) are not feasible, due either to constraints associated with habitat or to the high costs involved. We examined the use of side-scan sonar as a novel way to acoustically detect free-ranging West …

The Debt Financing Of Parenthood, Melissa B. Jacoby

Faculty Publications

No abstract provided.

The Special Threat Of Informants To The Innocent Who Are Not Innocents: Producing "First Drafts," Recording Incentives, And Taking A Fresh Look At The Evidence, Robert P. Mosteller

Faculty Publications

No abstract provided.

At The End Of The Clinical Trial: Does Access To Investigational Technology End As Well?, Richard S. Saver

Faculty Publications

No abstract provided.

Gene Patents And The Product Of Nature Doctrine, John M. Conley

Faculty Publications

No abstract provided.

A Working Conference On Students With Disabilities In Stem Coursework And Careers, Audrey C. Rule, Greg P. Stefanich, Charlotte W. Haselhuhn, Belinda Peiffer

Faculty Publications

Background: Few teachers and special education specialists are aware of the materials and resources available to support science; technology; engineering; and mathematics instruction for the scattered and isolated 3000 students with sensory and motor disabilities in Iowa's K-12 schools. Additionally; faculty at many community colleges and regent institutions are not aware of possible accommodations for their students with disabilities who have interests in pursuing STEM careers. Unfortunately; this often leads to discouragement and lack of success for students with motor or sensory disabilities. This conference brings together experts and conference attendees involved in instruction; support; or transitions for these students …

Contributions Of Family Leisure To Family Functioning Among Families That Include Children With Developmental Disabilities, Dorthy C. H. Dodd, Ramon Zabriskie, Mark A. Widmer, Dennis Eggett

Faculty Publications

The purpose of this study was to examine the relationship between family leisure involvement and family functioning among families that include children with developmental disabilities. The sample consisted of 144 families (144 parents and 60 youth). Data were analyzed from the parent, youth, and family perspective. The Family Leisure Activity Profile (FLAP) was used to measure family leisure involvement. FACES II was used to measure family functioning. A scale based upon the definition, classification, and systems of support manual of the American Association on Mental Retardation adapted by Dyches was used to measure the level of support needed by the …

Within-Pond Oviposition Site Selection In The Wood Frog (Rana Sylvatica), A. A. Brindle, S. B. Karr, Geoffrey R. Smith, Jessica E. Rettig

Faculty Publications

No abstract provided.

Understanding Why Professional Nurses Work, Patricia Rushton, Dennis L. Eggett

Faculty Publications

The project studied factors impacting professional registered nurses in maintaining active employment. Participants chose to enter the nursing profession to provide service. They were motivated to stay in the nursing profession in an employed situation to 1) provide financial support of themselves and their families,and 2) from a desire to serve. Respect as individuals was motivation to do their best work. The results of the study reinforce the desire of the nursing profession to serve its clients and patients. The results demonstrate the committment of registered nurses to the nursing profession. They also demonstrate the desire of professional nurses to …

When God Hates: How Liberal Guilt Lets The New Right Get Away With Murder, Jose M. Gabilondo

Faculty Publications

No abstract provided.

Strength In Numbers: Setting Quantitative Criteria For Listing Species Under The Endangered Species Act, Kalyani Robbins

Faculty Publications

My primary thesis is that the Fish & Wildlife Service and the National Marine Fisheries Service need to set quantitative criteria for listing species under the Endangered Species Act in order to promote consistency, transparency, and efficiency. I suggest a model for doing so, the use of which would create an opportunity to move beyond the political quagmire surrounding the selection of vulnerable species for preservation. Like my other environmental scholarship, the article merges scientific research in the field of conservation biology with legal analysis. With the status quo, listing decisions often turn on wildly different factors, including some not …

Social Ties And Cardiovascular Function: An Examination Of Relationship Positivity And Negativity During Stress, Wendy C. Birmingham, Bert N. Uchino, Timothy W. Smith, Kathy C. Light, David M. Sanbonmatsu

Faculty Publications

The quality and quantity of one’s relationships have been reliably linked to morbidity and mortality. More recently, studies have focused on links between relationships and cardiovascular reactivity as a physiological mechanism via the stress-buffering hypothesis. However, not all social relationships are consistently positive which points to the importance of a more comprehensive examination of relationship that includes negative qualities. In this study, we manipulated relationship positivity and negativity with an experimenter and examined its influence on cardiovascular reactivity. Results revealed that relationship positivity was associated with lower systolic blood pressure (SBP) reactivity for men and women. Relationship negativity, on the …

Diagramming Tpack In Practice: Using An Elaborated Model Of The Tpack Framework To Analyze And Depict Teacher Knowledge, Suzy Cox, Charles R. Graham

Faculty Publications

The introduction of the TPACK model by Mishra and Koehler (2006) has had a profound impact on the field of educational technology. It has inspired teachers, teacher educators, and educational technologists to reevaluate their knowledge and use of technology in the classroom. While Koehler, Mishra, and others have attempted to define and measure TPACK, the framework is not yet fully understood (Angeli & Valanides, 2009). Thus far, the explanations of technological pedagogical content knowledge and its associated constructs that have been provided are not clear enough for researchers to agree on what is and is not an example of each …

Tpack Development In Science Teaching: Measuring The Tpack Confidence Of Inservice Science Teachers, Charles R. Graham, Nicolette Burgoyne, Pamela Cantrell, Leigh Smith, Larry St. Clair, Ron Harris

Faculty Publications

Knowledge related to the effective use of educational technologies has become widely recognized as an important aspect of an educator’s knowledge-base for the 21st Century (ISTE, 2008; National Council for Accreditation of Teacher Education, 1997; Partnership for 21st Century Skills, 2003). Early in the history of educational technology, educators were taught in technology classes that focused primarily on technology skills independent from the pedagogical or content courses (Graham, Culatta, Pratt, & West, 2004; Hargrave & Hsu, 2000; Willis & Mehlinger, 1996). Educators soon recognized that technology skills alone did not serve them well because one could know how to operate …

Hardware Accelerated Sequence Alignment With Traceback, Scott Lloyd, Quinn O. Snell

Faculty Publications

Biological sequence alignment is an essential tool used in molecular biology and biomedical applications. The growing volume of genetic data and the complexity of sequence alignment present a challenge in obtaining alignment results in a timely manner. Known methods to accelerate alignment on reconfigurable hardware only address sequence comparison, limit the sequence length, or exhibit memory and I/O bottlenecks. A space-efficient, global sequence alignment algorithm and architecture is presented that accelerates the forward scan and traceback in hardware without memory and I/O limitations. With 256 processing elements in FPGA technology, a performance gain over 300 times that of a desktop …

Using A Mathematical Model Of Cadherin-Based Adhesion To Understand The Function Of The Actin Cytoskeleton, J. C. Dallon, Elijah Newren, Marc Hansen

Faculty Publications

The actin cytoskeleton plays a role in cell-cell adhesion but its specific function is not clear. Actin might anchor cadherins or drive membrane protrusions in order to facilitate cell-cell adhesion. Using a mathematical model of the forces involved in cadherin-based adhesion we investigate its possible functions. The immersed boundary method is used to model the cell membrane and cortex with cadherin binding forces added as linear springs. The simulations indicate that cells in suspension can develop normal cell-cell contacts without actin-based cadherin anchoring or membrane protrusions. The cadherins can be fixed in the membrane or free to move and the …

Global Distribution Of Atmospheric Phosphorus Sources, Concentrations And Deposition Rates, And Anthropogenic Impacts, Natalie Mahowald, Timothy D. Jickells, Alex R. Baker, Paulo Artaxo, Claudia R. Benitez-Nelson, Gilles Bergametti, Tami C. Bond, Ying Chen, David D. Cohen, Barak Herut, Nilgun Kubilay, Remi Losno, Chao Luo, Willy Maenhaut, Kenneth A. Mcgee, Gregory S. Okin, Ronald L. Siefert, Seigen Tsukuda

Faculty Publications

[1] A worldwide compilation of atmospheric total phosphorus (TP) and phosphate (PO4) concentration and deposition flux observations are combined with transport model simulations to derive the global distribution of concentrations and deposition fluxes of TP and PO4. Our results suggest that mineral aerosols are the dominant source of TP on a global scale (82%), with primary biogenic particles (12%) and combustion sources (5%) important in nondusty regions. Globally averaged anthropogenic inputs are estimated to be ∼5 and 15% for TP and PO4, respectively, and may contribute as much as 50% to the deposition over the oligotrophic ocean where productivity may …

Topographic Effects On The Path And Evolution Of Loop Current Eddies, Kyung Hoon Hyun, Patrick J. Hogan

Faculty Publications

Eddy-topography (ET) interactions are important in determining the path and evolution of oceanic eddies, including Loop Current Eddies (LCE) in the Gulf of Mexico (GOM). We use the Hybrid Coordinate Ocean Model and satellite altimetry data to investigate the ET interactions and the impact on LCE pathway evolution in the GOM. Satellite altimetry reveals that LCEs translate dominantly westward in the central GOM and strongly collide and reflect against topography near the continental slope in the northern and western GOM. The result is the frequent generation of an anticyclone-cyclone (AC) pair in conjunction with the LCEs. In the absence of …

Chromosomal Inversions Between Human And Chimpanzee Lineages Caused By Retrotransposons, Jungnam Lee, Kyudong Han, Thomas J. Meyer, Heui Soo Kim, Mark A. Batzer

Faculty Publications

The long interspersed element-1 (LINE-1 or L1) and Alu elements are the most abundant mobile elements comprising 21% and 11% of the human genome, respectively. Since the divergence of human and chimpanzee lineages, these elements have vigorously created chromosomal rearrangements causing genomic difference between humans and chimpanzees by either increasing or decreasing the size of genome. Here, we report an exotic mechanism, retrotransposon recombination-mediated inversion (RRMI), that usually does not alter the amount of genomic material present. Through the comparison of the human and chimpanzee draft genome sequences, we identified 252 inversions whose respective inversion junctions can clearly be characterized. …

Structure Of A Complete Integrin Ectodomain In A Physiologic Resting State And Activation And Deactivation By Applied Forces, Jianghai Zhu, Bing Hao Luo, Tsan Xiao, Chengzhong Zhang, Noritaka Nishida, Timothy A. Springer

Faculty Publications

The complete ectodomain of integrin αIIbβ3 reveals a bent, closed, low-affinity conformation, the β knee, and a mechanism for linking cytoskeleton attachment to high affinity for ligand. Ca and Mg ions in the recognition site, including the synergistic metal ion binding site (SyMBS), are loaded prior to ligand binding. Electrophilicity of the ligand-binding Mg ion is increased in the open conformation. The β3 knee passes between the β3-PSI and αIIb-knob to bury the lower β leg in a cleft, from which it is released for extension. Different integrin molecules in crystals and EM reveal breathing that appears on pathway to …

The Role Of Msa In Staphylococcus Aureus Biofilm Formation, Karthik Sambanthamoorthy, Antony Schwartz, Vijayaraj Nagarajan, Mohamed O. Elasri

Faculty Publications

Background

Staphylococcus aureus is an important pathogen that forms biofilms. The global regulator sarA is essential for biofilm formation. Since the modulator of sarA (msa) is required for full expression of sarA and regulates several virulence factors, we examined the capacity of the msa mutant to form biofilm.

Results

We found that mutation of msa results in reduced expression of sarA in biofilm and that the msa mutant formed a weak and unstable biofilm. The msa mutant is able to adhere to surfaces and begins to form biofilm but fails to mature indicating that the defect of the …

Uva-Induced Photo Recovery During Early Zebrafish Embryogenesis, Qiaoxiang Dong, W. Todd Monroe, Terrence R. Tiersch, Kurt R. Svoboda

Faculty Publications

DNA photorepair has been widely studied in simple aquatic organisms that live in the marine environment, but is less understood in more complex species that live in freshwater. In the present study, we evaluated UVA-induced DNA photo recovery in embryonic stages of zebrafish, Danio rerio, a freshwater model species. Evaluation of UVB exposure and UVA photo recovery of zebrafish embryos revealed different UVB tolerances and capacities for UVA photo recovery at different stages of development. Effective UVA photo recovery was observed at 3 h post-fertilization (hpf), 6-7 hpf, and 12 hpf, but not in the early cleavage stage (2-32 cells). …