Digital Commons Network^™

Linking Self-Regulation And Risk Proneness To Risky Sexual Behavior: Pathways Through Peer Pressure And Early Substance Use, Lisa J. Crockett, Marcela Raffaelli, Yuh-Ling Shen

Department of Psychology: Faculty Publications

The linkages between self-regulation in childhood, risk proneness in early adolescence, and risky sexual behavior in mid-adolescence were examined in a cohort of children (N = 518) from the National Longitudinal Survey of Youth. The possible mediating role of two early adolescent variables (substance use and negative peer pressure) was also examined. Self-regulation was assessed by maternal report at ages 8–9, and risk proneness, comprising aspects of sensation seeking and decision making, was assessed by adolescent self-report at ages 12–13. Structural equation models predicting risky sexual behavior at ages 16–17 indicated that self-regulation operated partly through early adolescent substance use, …

Switchgrass For Biomass Feedstock In The Usa, Matt Sanderson, Paul Adler, Akwasi Boateng, Michael Casler, Gautam Sarath

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Switchgrass has received much study for biomass feedstock production and conversion through research funded by the US-DOE and USDA during the past two decades. We have an improved understanding of the adaptation of existing cultivars and new cultivars with yield and adaptation improvements are now appearing. We also have a good understanding of the agronomics of switchgrass production, mainly from its use as a forage crop. There remain several constraints to switchgrass use in bioenergy cropping systems, including reliable establishment methods to obtain productive stands in the first year, targeted fertilization and nutrient management techniques to efficiently use nitrogen fertilizer, …

Mental Health And Substance Abuse Services Preferences Among American Indian People Of The Northern Midwest, Melissa Lynn Walls, Kurt D. Johnson, Les B. Whitbeck, Dan R. Hoyt

Department of Sociology: Faculty Publications

This study examines factors that influence preferences between traditional cultural and western mental health and substance use associated care among American Indians from the northern Midwest. Personal interviews were conducted with 865 parents/caretakers of tribally enrolled youth concerning their preferences for traditional/cultural and formal healthcare for mental health or substance abuse problems. Adults strongly preferred traditional informal services to formal medical services. In addition, formal services on reservation were preferred to off reservation services. To better serve the mental health and substance abuse treatment needs of American Indians, traditional informal services should be incorporated into the current medical model.

Wave Propagation In Nanofibers, Xiangfa Wu, Yuris A. Dzenis

Nebraska Center for Materials and Nanoscience: Faculty Publications

Surface effect on the longitudinal and flexural wave propagation in straight nanofibers/nanowires is studied within the framework of continuum mechanics. Modified Euler-Bernoulli and Rayleigh-Love rod equations and modified Timoshenko beam equation were developed to take into account the surface effect. It was found that surface tension/stress plays appreciable influence on the wave propagation in nanofibers/nanowires at very small diameters. Wave dispersion relations were presented in closed form, and numerical calculations were performed to show the variation of the phase velocity with the wave number at varying surface property and fiber diameter. The given results can be used as the theoretical …

An Introduction To Relevance Ranking Systems, Scott Childers

UNL Libraries: Faculty Publications

An introduction to the concept of relevance rankings systems used by internet search engines and the impact on librarians.

Evidence Of Long-Wavelength Collective Excitations In Magnetic Superlattices, Nikolay I. Polushkin, Steven A. Michalski, Lanping Yue, Roger D. Kirby

Materials Research Science and Engineering Center: Faculty Publications

We report on a mechanism of dynamic dipolar coupling in magnetic superlattices via long-wavelength nonevanescent fields. In the spin excitation spectra of our heterophase stripe structures, such interactions mediate a singlet ↔ doublet crossover in the frequency regime driven by the orientation of an external static field. This crossover is a new feature observed in collective behavior of superlattices, though there is some analogy of this phenomenon with birefringence taking place in optical superlattices. We envision applying the collective effects described here in microwave photonic devices.

Untemplated Oligoadenylation Promotes Degradation Of Risc-Cleaved Transcripts, Fadia Ibrahim, Jennifer Rohr, Won-Joong Jeong, Jennifer Hesson, Heriberto D. Cerutti

Center for Plant Science Innovation: Faculty and Staff Publications

In the best-characterized mechanism of RNAmediated silencing, small interfering RNAs (siRNAs), incorporated into the RNA-induced silencing complex (RISC), guide the endonucleolytic cleavage of complementary RNAs (1). In Drosophila melanogaster, these RISC-generated products are eventually degraded by exoribonucleases: Xrn1, a 5′-to-3′ exonuclease, and exosome, a 3′-to-5′ multisubunit exonuclease (2). Interestingly, in Arabidopsis thaliana and in mammals, an oligouridine or oligoadenine [oligo(U/A)] tail is added to the 5′ RNA fragments resulting from microRNA-directed cleavage (3). However, the biological role of this tail remains unclear.

Indian Boarding Schools In Comparative Perspective: The Removal Of Indigenous Children In The United States And Australia, 1880-1940, Margaret D. Jacobs

Department of History: Faculty Publications

This essay compares the forced removal of American Indian and Aboriginal children in the nineteenth and twentieth centuries, arguing that governments intentionally removed indigenous children to institutions as acts of colonial control, not assimilation. Since colonial governments in the United States and Australia did not value traditional cultures of American Indians and Aborigines, they sought to destroy them. The essay argues that non-Natives purposely removed indigenous children to make them "useful" to non-Natives. As a result, indigenous children's institutions taught a curriculum designed to be of benefit to employers who could exploit Native labor. Every state in Australia had a …

The Art Of Leasing Negotiation In A Frenzied Environment, Bruce Johnson, Allen Prosch, Aaron Raymond

Cornhusker Economics

Let’s face it. The farm economy across much of Nebraska has literally been turned upside down in the past few months by the “Ethanol Gold Rush.” Demand for corn has shot corn prices upward beyond $3.00 per bushel, when only a year earlier the harvest prices hovered around $1.50. Many expect these new price levels to hold, at least for the 2007 crop season.

Mindless Pleasures: Living With Gravity's Rainbow, Randall Snyder

Randall Snyder Compositions

For Flute/Piccolo, Oboe, Clarinet in B^b, Bassoon, Trumpet in B^b, Horn in F, Trombone, Percussion (2), Violin (2), Viola, Cello, and Double Bass.

I A screaming comes across the sky
II "more Ouspenskian nonsense"
III triggered to the icy noctiluca
IV The Kenosha Kid Medley
V All you feel like listening to Beethoven is going out and invading Poland
VI brains ravaged by antisocial and mindless pleasures

57 pages

Form-Based Code As A Regulatory Tool For Mixed Use Urban Infill Development In Lincoln, Nebraska, David A. Gaspers

Community and Regional Planning Program: Theses and Student Projects

The separation of incompatible uses by zoning has been an established land regulatory tool for the past eighty years. The Standard State Zoning Enabling Act was made available to states by the U.S. Department of Commerce in 1924 to provide state governments with standardized language with which they could pass legislation that would grant governments the authority to enact zoning ordinances to promote the health, safety and welfare of the public. The United States Supreme Court held up the legality of zoning with the landmark 1926 case of Euclid v. Ambler Realty. Since that time, zoning has been the predominant …

December 2006 - Staff Meeting Minutes

ALEC Committee Minutes

No abstract provided.

Measurement Of The BS0 Lifetime Using Semileptonic Decays, V. M. Abazov, Kenneth A. Bloom, Gregory R. Snow, D0 Collaboration

Kenneth Bloom Publications

We report a measurement of the B_s⁰ lifetime in the semileptonic decay channel B_s⁰ → D_s^- μ⁺νX (and its charge conjugate), using approximately 0.4 fb^-1 of data collected with the D0 detector during 2002–2004. Using 5176 reconstructed D_s^- μ⁺ signal events, we have measured the B_s⁰ lifetime to be τ(B_s⁰) = 1.398 ± 0.044(stat) _-0.025^+0.028(syst) ps. This is the most precise measurement of the B_s⁰ lifetime to date.

Thickness Profiles Through Fatigued Bulk Ceramic Lead Zirconate Titanate, Nina Balke, Doru C. Lupascu, Thomas Blair

Alexei Gruverman Publications

Wedge-cut samples of fatigued ferroelectric lead zirconate titanate ceramics were investigated using piezoresponse force microscopy in conjunction with conventional electrical hysteresis measurements. The local clamping of domains is monitored at different depths in the sample. The coercive fields in grains near the electrodes differ for different materials and preparation methods of the electrodes. For silver, fatigue consistently generates a space charge in the depth of the sample. For platinum electrodes, the fatigue behavior scatters strongly. Microscopically, it either occurs directly underneath the electrodes or resembles the behavior of the silver electrodes in other samples.

Responses Of Pond-Breeding Amphibians To Wildfire: Short-Term Patterns In Occupancy And Colonization, Blake R. Hossack, Paul Stephen Corn

United States Geological Survey: Staff Publications

Wildland fires are expected to become more frequent and severe in many ecosystems, potentially posing a threat to many sensitive species. We evaluated the effects of a large, stand-replacement wildfire on three species of pond-breeding amphibians by estimating changes in occupancy of breeding sites during the three years before and after the fire burned 42 of 83 previously surveyed wetlands. Annual occupancy and colonization for each species was estimated using recently developed models that incorporate detection probabilities to provide unbiased parameter estimates. We did not find negative effects of the fire on the occupancy or colonization rates of the long-toed …

Secis Elements In The Coding Regions Of Selenoprotein Transcripts Are Functional In Higher Eukaryotes, Heiko Mix, Alexey V. Lobanov, Vadim Gladyshev

Vadim Gladyshev Publications

Expression of selenocysteine (Sec)-containing proteins requires the presence of a cis-acting mRNA structure, called selenocysteine insertion sequence (SECIS) element. In bacteria, this structure is located in the coding region immediately downstream of the Sec-encoding UGA codon, whereas in eukaryotes a completely different SECIS element has evolved in the 3’-untranslated region. Here, we report that SECIS elements in the coding regions of selenoprotein mRNAs support Sec insertion in higher eukaryotes. Comprehensive computational analysis of all available viral genomes revealed a SECIS element within the ORF of a naturally occurring selenoprotein homolog of glutathione peroxidase 4 in fowlpox virus. The fowlpox …

Antecedents Of Transactional, Transformational, And Servant Leadership: A Constructive-Development Theory Approach, Marilyn J. Bugenhagen

Department of Agricultural Leadership, Education and Communication: Dissertations, Theses, and Student Scholarship

This field study examined the antecedents of transactional, transformational, and servant leadership behaviors measured on continuum of constructive-development development theory.

Data collected from 54 leaders and 409 followers from community and educational leadership programs across the United States. A multi-level analysis conducted using hierarchical linear modeling combining leaders’ perception of their leadership behaviors, followers rating of leaders’ behaviors and measure of leaders’ level of constructive-development order.

Using the Multifactor Leadership Questionnaire (Avolio & Bass, 2004) and Servant Leadership Questionnaire (Barbuto & Wheeler, 2006) and correlated with constructive-development Order using the Subject-Object Interview (Kegan,1982; Lahey, Souvaine, Kegan, Goodman, & Felix, 1988) …

Design And Implementation Of A Modular Wireless Sensor Network Sniffer, John C. Mceachen, Teo Hong Siang, Georgios Kirykos

U.S. Navy Research

We present the design and implementation of a wireless packet sniffing application focused on the communications of TinyOS-based sensor networks. This modular, multi-threaded application allows robust analysis of transmitted frames in an easily understood format similar to tcpdump. The underlying software framework is presented and details of the implementation are discussed. Finally, verification of the application is performed using a basic TinyOS application.

Measurement Of BD Mixing Using Opposite-Side Flavor Tagging, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, D0 Collaboration

Kenneth Bloom Publications

We report on a measurement of the B_d⁰ mixing frequency and the calibration of an opposite-side flavor tagger in the D0 experiment. Various properties associated with the b quark on the opposite side of the reconstructed B meson are combined using a likelihood-ratio method into a single variable with enhanced tagging power. Its performance is tested with data, using a large sample of reconstructed semileptonic B → μD⁰X and B → μD^*X decays, corresponding to an integrated luminosity of approximately 1 fb^-1. The events are divided into groups depending on …

A Comparison Of Optimized Link State Routing With Traditional Ad-Hoc Routing Protocols, Pore Ghee Lye, John C. Mceachen

U.S. Navy Research

The performance of mobile ad-hoc networks (MANET) is related to the efficiency of the routing protocols in adapting to frequently changing network topology and link status. This paper addresses the issue by comparing the relative performance of three key ad-hoc routing protocols: Destination-sequenced Distance Vector (DSDV), Ad-hoc Ondemand Distance Vector (AODV) and Optimized Link State Routing (OLSR). The protocols are tested based on two scenarios, namely, tactical networks for ships and sensor-based network nodes. Four performance metrics were measured by varying the maximum speed of mobile hosts, network size and traffic load, to assess the routing capability and protocol efficiency. …

Making The Competition Irrelevant - The Blue Ocean Strategy, Cheryl A. Burkhart-Kriesel

Cornhusker Economics

What if you were involved in a business where all the market trends were showing a decline, indicating limited potential for growth? Here is the reality - your primary customer no longer sees your product or service as important. Other products and services have simply pushed you out. Technology and globalization are making it increasingly difficult to compete. Your realistic assessment tells you that the cost cutting strategies you have been implementing can only take the business so far. In essence, the business appears to be going nowhere.

Affyminer: Mining Differentially Expressed Genes And Biological Knowledge In Genechip Microarray Data, Guoqing Lu, The V Nguyen, Yuannan Xia, Michael E. Fromm

Department of Agronomy and Horticulture: Faculty Publications

Background: DNA microarrays are a powerful tool for monitoring the expression of tens of thousands of genes simultaneously. With the advance of microarray technology, the challenge issue becomes how to analyze a large amount of microarray data and make biological sense of them. Affymetrix GeneChips are widely used microarrays, where a variety of statistical algorithms have been explored and used for detecting significant genes in the experiment. These methods rely solely on the quantitative data, i.e., signal intensity; however, qualitative data are also important parameters in detecting differentially expressed genes.

Results: AffyMiner is a tool developed for detecting differentially …

Single-Sided Crash Cushion System, John D. Reid, John R. Rohde, Dean L. Sicking

Department of Mechanical and Materials Engineering: Faculty Publications

A single-sided crash attenuation cushion system having an impact head and three stage energy absorption mechanism. The energy absorbing mechanism has a mandrel for deforming thin-walled tubes in a controlled collapse to absorb impact forces from a colliding vehicle. The third stage of the absorption mechanism includes an additional deformable compressible tube between the fixed-object hazard and the thin walled tubes.

Genomeblast: A Web Tool For Small Genome Comparison, Guoqing Lu, Liying Jiang, Resa M. K. Helikar, Thaine W. Rowley, Luwen Zhang, Xianfeng Chen, Etsuko N. Moriyama

Nebraska Center for Virology: Faculty Publications

Background: Comparative genomics has become an essential approach for identifying homologous gene candidates and their functions, and for studying genome evolution. There are many tools available for genome comparisons. Unfortunately, most of them are not applicable for the identification of unique genes and the inference of phylogenetic relationships in a given set of genomes.

Results: GenomeBlast is a Web tool developed for comparative analysis of multiple small genomes. A new parameter called "coverage" was introduced and used along with sequence identity to evaluate global similarity between genes. With GenomeBlast, the following results can be obtained: (1) unique genes in each …

2006-07 Unopa General Meeting Agenda, December

UNOPA Minutes

No abstract provided.

Addendum A: Wisherd And Emeriti Funds: Definition Of Terms And Explanation Of Allowable Use Of These Funds, Jason D. Kennedy

UNL Emeriti Association Board: Meeting Minutes

Book value is the historical cost basis of the endowment (or investment) whereas market value is what the endowment is worth right now. Basically, book value is what went into the endowment and market value is what you would get if you sold it now. Because this is a permanent endowment, only the income can be spent. The income is the spendable account. The estimated annual income is the amount the fund can expect to earn over the next year if no new contributions are made to the account. It is the endowment thatis earning income and the earnings are …

Addendum B: Emeritus Status For Retired Faculty Academic /Administrative Employees

UNL Emeriti Association Board: Meeting Minutes

Emeritus status is the rank awarded by the Board of Regents to an employee at the time of retirement in recognition of substantial service rendered to the University in teaching, research, extension, or administration in a professional field. It may also be awarded to a retired administrator whose work impinges directly on the educational program.

For faculty the recommendation is initiated by a vote of the departmental faculty with the endorsement of the chair and dean. In the case of A-line administrators, the recommendation is made by that individual's immediate supervisor. Consistent with Regents policy, eligibility for emeritus status includes …

Fate Of Fish Production In A Seasonally Flooded Saltmarsh, Philip W. Stevens, Clay L. Montague, Kenneth J. Sulak

United States Geological Survey: Staff Publications

Although saltmarshes are thought to enhance the productivity of open estuarine water, the mechanism by which energy transfer occurs has been debated for decades. One possible mechanism is the transfer of saltmarsh production to estuarine waters by vagile fishes and invertebrates. Monthly estimates of fish standing stock, net fish ingress, and predation were used to develop a bio-mass budget to estimates annual production of fishes and the relative yield to predatory fish, birds, and direct migration to the estuary. Annual production of saltmarsh fishes was estimated to 31.0 gm^-2 saltmarsh, which falls within the range of previously reported values …

Thinking Of Changing Your Mind, Now That You Already Planted Wheat?, Matt Stockton, Roger K. Wilson

Cornhusker Economics

Because wheat prices had increased dramatically this past year relative to other commodity prices, and seemed to remain strong, some producers decided to plant wheat this fall on acres that traditionally were planted to corn or soybeans. With the recent upswing in the corn market these producers may now be wondering if they should stick with the wheat they already planted or reconsider their plans and plant corn.

Structural Study Of Mn-Doped Zno Fi Lms By Tem, Xingzhong Li, Jun Zhang, David J. Sellmyer

David Sellmyer Publications

The structural study of diluted magnetic semiconductors is important for interpreting the ferromagnetic behavior associated with the materials. In the present work, a series of low concentration Mn-doped ZnO thin films synthesized by pulsed laser deposition was studied by electron microscopy. All films show the wurtzite structure with (001) preferred growth orientation on the Si substrate. Electron diffraction experiments indicate the deterioration of the growth orientation in some areas of the films with increasing Mn concentration, and the existence of a secondary phase, of Mn₂O₃-type, in the films with larger Mn concentrations. High-resolution electron microscopy images …