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2002

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New Amphicyonid Carnivorans (Mammalia, Daphoeninae) From The Early Miocene Of Southeastern Wyoming, Robert M. Hunt Jr. Jan 2002

New Amphicyonid Carnivorans (Mammalia, Daphoeninae) From The Early Miocene Of Southeastern Wyoming, Robert M. Hunt Jr.

Department of Earth and Atmospheric Sciences: Faculty Publications

Latest Arikareean sediments of the upper Arikaree Group in southeastern Wyoming produced rare fossils of large, early Miocene amphicyonid carnivorans for field parties of the Frick Laboratory, American Museum, from 1932 to 1940. Recent geologic field investigations, including mapping, have discovered additional remains of these carnivorans, clarifying their geographic and stratigraphic distribution, and permitting a more informed description of the earlier collections. These carnivorans come from tuffaceous sandstones of the Upper Harrison beds, the terminal formation-rank unit of the Arikaree Group in southeastern Wyoming. A large species of the amphicyonid Daphoenodon (D. falkenbachi, n. sp.) occurs in northern …

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Intercontinental Migration Of Neogene Amphicyonids (Mammalia, Carnivora): Appearance Of The Eurasian Beardog Ysengrinia In North America, Robert M. Hunt Jr. Jan 2002

Intercontinental Migration Of Neogene Amphicyonids (Mammalia, Carnivora): Appearance Of The Eurasian Beardog Ysengrinia In North America, Robert M. Hunt Jr.

Department of Earth and Atmospheric Sciences: Faculty Publications

At the beginning of the Neogene a remarkable faunal turnover occurred within the North American carnivore community. The dominant larger Oligocene carnivores (creodonts, nimravid cats, the amphicyonid Daphoenus) became extinct during the late Oligocene and were replaced in the early Miocene by amphicyonine amphicyonids and hemicyonine ursids that entered North America from Eurasia. During a five million-year interval from ~23 to 18 Ma, large amphicyonines appear in late Arikareean and early Hemingfordian faunas of the North American midcontinent. Although most fossils are from western Nebraska and southeastern Wyoming, occurrences of amphicyonines at several sites in the eastern United States …

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Assessment Of Slip Severity Among Different Age Groups, Thurmon E. Lockhart, Jeffrey C. Woldstad, James L. Smith Jan 2002

Assessment Of Slip Severity Among Different Age Groups, Thurmon E. Lockhart, Jeffrey C. Woldstad, James L. Smith

Department of Industrial and Management Systems Engineering: Faculty Publications

A laboratory study utilizing new techniques for assessing slip severity was conducted to investigate the process of inadvertent slips and falls among different age groups. Forty-two subjects from three age groups (young adults, middle-aged, and the elderly) walked on a rectangular track at a self-determined pace. Without the subjects’ awareness, a slippery floor surface was placed on the track over a force-measuring platform. The results indicated that elderly adults’ friction demand (RCOF) was not significantly different from the young and middle-aged adults. The older adults, however, fell more often than the other age groups. Fall recovery threshold (FRT) measures indicated …

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A Simulation Based Experiment For Comparing Amhs Performance In A Semiconductor Fabrication Facility, Gerald Mackulak, Paul Savory Jan 2002

A Simulation Based Experiment For Comparing Amhs Performance In A Semiconductor Fabrication Facility, Gerald Mackulak, Paul Savory

Department of Industrial and Management Systems Engineering: Faculty Publications

As the cost and complexity of constructing a semiconductor fabrication facility increases, responsive tools are needed for designing and planning its operations. Discrete-event simulation paired with design of experiments is an effective combination. This article demonstrates how simulation in combination with design of experiments is used to compare the intrabay layout of two automated material handling systems. The difference in stocker robot utilization, number of vehicle moves per hour, and average delivery time for the two intrabay layouts will be compared using a fractional factorial experimental design. The study demonstrates that the distributed storage option is preferable for maximizing manufacturing …

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An Airborne Low-Cost Sar For Remote Sensing: Hardware Design And Development, Ram Narayanan, Paul C. Cantu, Xiaojian Xu Jan 2002

An Airborne Low-Cost Sar For Remote Sensing: Hardware Design And Development, Ram Narayanan, Paul C. Cantu, Xiaojian Xu

Department of Electrical and Computer Engineering: Faculty Publications

An airborne low-cost synthetic aperture radar (SAR) is under development at the University of Nebraska-Lincoln. The SAR system is an X-band, stepped-chirp frequency modulation (SCFM) radar system. One of its unique features is that the waveform generation consists of a timing-controlled D/A converter and VCO arrangement to synthesize the SCFM signal, whereby allowing for less design complexity and a much lower overall system cost. In this paper, we present a brief description of the system and some computer simulation results.

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Shape-Based Change Detection And Information Mining In Remote Sensing, Jiang Li, Ram M. Narayanan Jan 2002

Shape-Based Change Detection And Information Mining In Remote Sensing, Jiang Li, Ram M. Narayanan

Department of Electrical and Computer Engineering: Faculty Publications

Change detection is an important application of remote sensing. This paper presents our approach to retrieve and represent interesting shapes in the remotely sensed imagery using supervised classification, edge detection, and polygonal approximation techniques, and to compare the shape similarity by a computationally efficient metric. The experiments were conducted on a time series of calibrated and registered Landsat MSS images, covering the scene of the lakes at the western Nebraska. The results show the effectiveness of the shape-based change detection approach, which is potentially useful for specific applications such as the study of the lake change response to short or …

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A Multiwavelength Airborne Polarimetric Lidar For Vegetation Remote Sensing: Instrumentation And Preliminary Test Results, Songxin Ran, Ram M. Narayanan Jan 2002

A Multiwavelength Airborne Polarimetric Lidar For Vegetation Remote Sensing: Instrumentation And Preliminary Test Results, Songxin Ran, Ram M. Narayanan

Department of Electrical and Computer Engineering: Faculty Publications

Several spaceborne and airborne lidar systems have been launched for vegetation canopy studies. Previous research has shown that lidars are useful tools for remote sensing of vegetation architecture. To support its Airborne Remote Sensing Program, the University of Nebraska has developed a multiwavelength airborne polarimetric lidar system. This system employs a Nd:YAG laser which emits radiation at two wavelengths: the fundamental at 1064 nm and the frequency-doubled at 532 nm. Both laser beams are highly linearly polarized (100: 1 extinction ratio) and have a beam divergence angle of ~4 mrad. The receiver consists of four channels, which enable dual-wavelength and …

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Femtosecond Laser Utilization Methods And Apparatus And Method For Producing Nanoparticles, Dennis R. Alexander Jan 2002

Femtosecond Laser Utilization Methods And Apparatus And Method For Producing Nanoparticles, Dennis R. Alexander

Department of Electrical and Computer Engineering: Faculty Publications

The present invention teaches various femtosecond machining and drilling apparatus and processes for fabricating tools and the like from both traditional and non-traditional materials. Also described are novel tools such as scalpels, and nozzles fabricated from the apparatus and processes of the present invention. Likewise, the present invention may be utilized in both a novel propulsion system and the production of materials formed from nanometer sized particles and the like.

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Review Of The Bible At Qumran: Text, Shape, And Interpretation, Edited By Peter W. Flint, Sidnie White Crawford Jan 2002

Review Of The Bible At Qumran: Text, Shape, And Interpretation, Edited By Peter W. Flint, Sidnie White Crawford

Department of Classics and Religious Studies: Faculty Publications

Review of The Bible at Qumran: Text, Shape, and Interpretation, edited by Peter W. Flint. Studies in the Dead Sea Scrolls and Related Literature. Grand Rapids, MI: Eerdmans, 2001. Pp. xv + 266. Price: $22.00. ISBN 0-8028-4630-0.

This volume is another contribution to the Eerdmans series Studies in the Dead Sea Scrolls and Related Literature. The essays are loosely gathered around the topic "The Bible at Qumran," and the editor has divided the articles into two groups. Part 1, "The Scriptures, the Canon, and the Scrolls," includes articles by J.A. Sanders, B.W. Waltke, E. Ulrich, C.A. Evans, and the …

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Review Of Timothy S. Laniak, Shame And Honor In The Book Of Esther, Sidnie White Crawford Jan 2002

Review Of Timothy S. Laniak, Shame And Honor In The Book Of Esther, Sidnie White Crawford

Department of Classics and Religious Studies: Faculty Publications

This book, a study of the anthropological categories of “shame” and “honour” in the Book of Esther, represents an excellent new contribution to the field of Esther stud­ies. It is new because, as Laniak observes, the significance of the categories of “hon­our” and “shame” have diminished in the modern west (p. 1), and contemporary readers of the Book of Esther may be unaware of the operation of these categories on the plot and characters of the book. Laniak’s book, a basically unrevised form of his 1997 Harvard Divinity School dissertation, sheds important light on this ne­glected aspect of the Book …

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Esther Not Judith: Why One Made It And The Other Didn’T, Sidnie White Crawford Jan 2002

Esther Not Judith: Why One Made It And The Other Didn’T, Sidnie White Crawford

Department of Classics and Religious Studies: Faculty Publications

Brave, wise, and stunningly beautiful, Esther and Judith have much in common. Both Jewish heroines live under foreign domination. Both risk their lives to save their people from oppression. One of the few differences between the two women is that Judith is openly pious and Esther is not. Indeed, God is not even mentioned in the Hebrew version of the Book of Esther. So why was the story of Esther included in the Hebrew Bible while the Book of Judith was left out? Because Esther never threatened the status quo, but Judith was a dangerous woman who had the power …

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“Married Widowhood”: Maintaining Couplehood When One Spouse Is Living In A Nursing Home, Dawn O. Braithwaite Jan 2002

“Married Widowhood”: Maintaining Couplehood When One Spouse Is Living In A Nursing Home, Dawn O. Braithwaite

Department of Communication Studies: Faculty Publications

When a marital partner moves to a nursing home, how do community-dwelling spouses, labeled “married widows,” adapt and cope with changes in the relationship and their own marital roles? The first goal of this study was to explore the role additions and deletions for community-based wives whose husbands moved to a nursing home. The second goal was to examine how these women discursively represent their own self-identity and the relationship they have with their husband who is living in a nursing home. Data were drawn from in-depth, face-to-face interviews with 21 wives whose husbands resided in a nursing home. A …

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Field Trip Guide (For The Nebraska Well Drillers Association) Southwestern Nebraska Geology, D. Eversoll Jan 2002

Field Trip Guide (For The Nebraska Well Drillers Association) Southwestern Nebraska Geology, D. Eversoll

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Scotts Bluff County Test Hole Logs, Vincent H. Dreeszen, Steven S. Sibray, Frank A. Smith Jan 2002

Scotts Bluff County Test Hole Logs, Vincent H. Dreeszen, Steven S. Sibray, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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A Novel Method To Improve The Test Efficiency Of Vlsi Tests, Hailong Cui, Sharad C. Seth, Shashank K. Mehta Jan 2002

A Novel Method To Improve The Test Efficiency Of Vlsi Tests, Hailong Cui, Sharad C. Seth, Shashank K. Mehta

School of Computing: Conference and Workshop Papers

This paper considers reducing the cost of test application by permuting test vectors to improve their defect coverage. Algorithms for test reordering are developed with the goal of minimizing the test cost. Best and worst case bounds are established for the performance of a reordered sequence compared to the original sequence of test application. SEMATECH test data and simulation results are used throughout to illustrate the ideas.

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Reduction Of Moniliformin During Alkaline Cooking Of Corn, Graciela Pineda-Valdes, Dojin Ryu, David S. Jackson, Lloyd B. Bullerman Jan 2002

Reduction Of Moniliformin During Alkaline Cooking Of Corn, Graciela Pineda-Valdes, Dojin Ryu, David S. Jackson, Lloyd B. Bullerman

Department of Food Science and Technology: Faculty Publications

The incidence of moniliformin (MON) producing Fusarium spp. in selected corn (Zea mays L.) samples from Mexico and the United States and the effects of alkaline cooking and the tortilla manufacturing processes on the reduction of MON were determined. The percentage of infected kernels with Fusariumspp. ranged from 0 to 22% in eight food-grade corn samples, including six from Mexico and two from the United States. Complete (100%) reduction of MON was observed when a naturally contaminated com sample containing 1.4 µg of MON/g of corn was used in a pilot-scale alkaline cooking and tortilla manufacturing process. In …

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Enzymatic Process For Nixtamalization Of Cereal Grains, David S. Jackson, Deepak Sahai Jan 2002

Enzymatic Process For Nixtamalization Of Cereal Grains, David S. Jackson, Deepak Sahai

Department of Food Science and Technology: Faculty Publications

Disclosed are novel methods of producing food compositions by the use of an enzymatic digestion of the component parts of whole portions of cereal grains, and grain materials, to impart advantageous qualities to the resulting flour and dough related products produced therefrom. The present invention specifically relates to the fields of making flour and dough, used for totillas, corn chips, totilla chips, snacks, half-products and related products from the component parts and whole portions of cereal grains, and related materials.

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The Effects Of Item Parceling On Goodness-Of-Fit And Parameter Estimate Bias In Structural Equation Modeling, Deborah L. Bandalos Jan 2002

The Effects Of Item Parceling On Goodness-Of-Fit And Parameter Estimate Bias In Structural Equation Modeling, Deborah L. Bandalos

Department of Educational Psychology: Faculty Publications

Two simulation studies were conducted to investigate the effects of the practice of item parceling. In Study 1, unidimensional sets of normally and nonnormally distributed item-level data were categorized into 2-, 3-, and 4-item parcels. Analyses revealed that the use of item parcels resulted in better fitting solutions, as measured by the root mean squared error of approximation (RMSEA), comparative fit index (CFI), and chi-square test, when items had a unidimensional structure. Parceled solutions also resulted in less bias in estimates of structural parameters under these conditions than did solutions based on the individual items. In Study 2 the issue …

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Cultural Aspects Of Drinking Patterns And Alcohol Controls In China, Ian Newman Jan 2002

Cultural Aspects Of Drinking Patterns And Alcohol Controls In China, Ian Newman

Department of Educational Psychology: Faculty Publications

Alcohol, 'jiu' in Mandarin, is intimately intertwined in almost every aspect of Chinese culture and has been since earliest times. China's cultural traditions, which have until now minimized the risks associated with alcohol use, will be challenged as China opens to the West There will be a tendency for outsiders to encourage the adoption of Western-style policies to address problems from alcohol abuse. Doing so without careful consideration of the cultural role of alcohol could be counterproductive.

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Alcohol Expectancies Among High School Students In China, Duane F. Shell, Ian Newman, Ming Qu Jan 2002

Alcohol Expectancies Among High School Students In China, Duane F. Shell, Ian Newman, Ming Qu

Department of Educational Psychology: Faculty Publications

There is little systematic information on the patterns of Chinese adolescents' alcohol expectancies and the influence of expectancies on drinking behavior. The purpose of this study was to examine Chinese high school students' alcohol expectancies and gender and drinking status (non-drinker, occasional drinker, regular drinker) differences in expectancies. We administered the Chinese Adolescent Alcohol Expectancy Questionnaire (CAEQ) to 1244 high school students (M = 627; F = 617) in Inner Mongolia, China. We Identified eight expectancy factors three negative (general negative consequences, harm to person/reputation, and negative uses of alcohol) and five positive (general positive perceptions, tension reduction/relaxation, drinking as …

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Alcohol And Young People: Promoting Benefits And Reducing Risks, Ian Newman Jan 2002

Alcohol And Young People: Promoting Benefits And Reducing Risks, Ian Newman

Department of Educational Psychology: Faculty Publications

For young people, alcohol used in ways prescribed by tradition and indigenous practices are suggested to be of lower risk than those encouraged by modem marketing and western images. Data from the USA and China are presented and discussed to support this hypothesis. Limited data suggest Chinese adolescents may be adopting higher-risk Western-style drinking practices and moving away from traditional drinking styles. It is suggested that policies which promote traditional and indigenous alcohol use should be encouraged and high-risk Western-style drinking practices discouraged.

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Prediction Of Soakout Time Using Analytical Models, B. Chakravarthy, H. P. Cherukuri, R. G. Wilhelm Jan 2002

Prediction Of Soakout Time Using Analytical Models, B. Chakravarthy, H. P. Cherukuri, R. G. Wilhelm

Department of Mechanical and Materials Engineering: Faculty Publications

In precision manufacturing enterprises, machine parts at nonstandard temperatures are often soaked to standard temperature prior to making any dimensional measurements. The soakout times are usually determined using lumped heat-transfer models where the part temperatures are assumed to be uniform. This article discusses conditions under which lumped model assumptions are valid by comparing lumped analyses for various shapes and materials with the more general finite element results. In addition, the effect of ambient temperature cycling on part response is also studied.

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Assemblages Of Breeding Birds As Indicators Of Grassland Condition, Sharon Freshman Browder, Douglas H. Johnson, I. J. Ball Jan 2002

Assemblages Of Breeding Birds As Indicators Of Grassland Condition, Sharon Freshman Browder, Douglas H. Johnson, I. J. Ball

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

We developed a measure of biological integrity for grasslands (GI) based on the most influential habitat types in the Prairie Pothole Region of North Dakota. GI is based on proportions of habitat types and the relationships of these habitat types to breeding birds. Habitat types were identified by digital aerial photography, verified on the ground, and quantified using GIS. We then developed an index to GI based on the presence or abundance of breeding bird species. Species abundance data were obtained from 3 min roadside point counts at 889 points in 44, 4050 ha study plots over a 2-year period. …

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The Importance Of Replication In Wildlife Research, Douglas H. Johnson Jan 2002

The Importance Of Replication In Wildlife Research, Douglas H. Johnson

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Wildlife ecology and management studies have been widely criticized for deficiencies in design or analysis. Manipulative experiments-with controls, randomization, and replication in space and time-provide powerful ways of learning about natural systems and establishing causal relationships, but such studies are rare in our field. Observational studies and sample surveys are more common; they also require appropriate design and analysis. More important than the design and analysis of individual studies is metareplication: replication of entire studies. Similar conclusions obtained from studies of the same phenomenon conducted under widely differing conditions will give us greater confidence in the generality of those findings …

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The Role Of Hypothesis Testing In Wildlife Science, Douglas H. Johnson Jan 2002

The Role Of Hypothesis Testing In Wildlife Science, Douglas H. Johnson

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Statistical testing of null hypotheses recently has come under fire in wildlife sciences (Cherry 1998; Johnson 1999; Anderson et al. 2000, 2001). In response to this criticism, Robinson and Wainer (2002) provide some further background information on significance testing; they argue that significance testing in fact is useful in certain situations. I counter by suggesting that such situations rarely arise in our field. I agree with Robinson and Wainer that replication is the key to scientific advancement. I believe, however, that significance testing and resulting P-values frequently are confused with issues of replication. Any single study can yield a P-value, …

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Federally Owned Rangelands: Are There New Grounds For Common Ground?, Mark Rey Jan 2002

Federally Owned Rangelands: Are There New Grounds For Common Ground?, Mark Rey

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Today, we have recreated the range wars, using less violent, twentyfirst century means, but involving equally passionate views and similarly implacable foes. While some advocates vigorously defend a historic land use, others argue with increasing vehemence for sharp reductions-or even a complete cessation-of such uses, dismissing an entire lifestyle as nihilistic. In the face of such apparently intractable antagonism, some have predicted, with unseemly enthusiasm, the eventual sunset of federal land grazing. Others have advanced the seemingly enlightened idea of buying federal grazing leases as a better approach to improving publicly-owned range habitats.

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Cypress Spurge, H. Faubert, R. A. Casagrande Jan 2002

Cypress Spurge, H. Faubert, R. A. Casagrande

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Cypress spurge (Euphorbia cyparissias L.) is a herbaceous European perennial introduced into North America as an ornamental plant in the 1860s (Croizat, 1945). It was widely planted in graveyards and often is called graveyard weed (Muenscher, 1936). The plant escaped cultivation and became established on open ground, particularly in pastures (Stuckey and Pearson, 1973).

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Slenderflower Thistle (Winged Slender Or Seaside Thistle), A. Gassmann, L.-T. Kok Jan 2002

Slenderflower Thistle (Winged Slender Or Seaside Thistle), A. Gassmann, L.-T. Kok

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Like many other Carduus species, slenderflower thistle, Carduus tenuiflorus Curtis, is associated with pastures, disturbed areas, and vacant lots. Invasion is favored by annual burning of pastures. The thistle protects forage from grazing and is a competitive weed in improved pastures.

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Leafy Spurge, R. M. Nowiersky, R. W. Pemberton Jan 2002

Leafy Spurge, R. M. Nowiersky, R. W. Pemberton

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Leafy spurge, Euphorbia esula L., is an invasive, deep-rooted perennial herb that is native to Eurasia. The plant spreads through explosive seed release and vigorous lateral root growth, forming large, coalescing patches that can dominate rangeland, pastures, prairies and other non-crop areas in the Great Plains region of North America.

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Spotted Knapweed, J. Story Jan 2002

Spotted Knapweed, J. Story

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Spotted knapweed, Centaurea maculosa Lamarck, is a purple-flowered, herbaceous, perennial weed, living three to five years on average. It infests semiarid range lands in the western United States and roadsides and fields in the eastern part of the country. Infested areas are dominated by the plant, reducing their grazing value and suppressing native plant communities. The plant, originally from Central Asia, has been in North America for over 120 years.

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