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Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Iowa Academy Of Science 108th Annual Meeting [1996]: Advance Program, Iowa Academy Of Science

Iowa Academy of Science Documents

Contains information about the schedule and presentations for the 1996 annual meeting of the Iowa Academy of Science.

A Gene Correlate Of Geotaxis Near Adh (2-50.1) In Drosophila Melanogaster, Scott F. Stoltenberg, Jerry Hirsch

Department of Psychology: Faculty Publications

As part of a long-term study (38+ years) to identify genetic correlates of geotaxis in Drosophila melanogaster, the investigators report the results of allozyme-level analyses of 2 lines derived from hybridizing high- and low-selected lines that have evolved stable, extreme expressions of geotaxis. Allelic variation at Adh was associated with geotactic performance in 1 hybrid-derived line, but not in another, after 66 free-mating generations beyond the F₂ generation. A second-chromosome gene correlate of geotaxis may lie within 1 map unit of Adh. Population genetic analyses suggest that there were different selection pressures on the hybrid-derived lines and …

Captive Environmental Influences On Behavior In Zoo Drills And Mandrills (Mandrillus), A Threatened Genus Of Primate, Erik Terdal

Dissertations and Theses

Drills (Mandrillus leucophaeus) are an endangered species of African monkey (Cercopithecidae), and their sole congener the mandrill (Mandrillus sphinx) is vulnerable to extinction. Both species are threatened in the wild by deforestation and hunting.

Drills have a poor record of captive reproduction. Many individuals appear to have behavioral deficiencies which interfere with reproduction. Thus, the zoo population of drills does not serve as a “hedge” against the species’ total extinction: drills are endangered in captivity as well as in the wild. Mandrills, by contrast, reproduce well in captivity. Information on the behavior of mandrills in captivity may help zoo managers …

Transactions Of The Nebraska Academy Of Sciences Table Of Contents: Volume 23 (1996)

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Editorial Contents

Nebraska Academy of Sciences Officers, Policy Committee .................... ii

Editorial Board .................... iv

Membership Objectives and Friends of the Academy .................... v

Nebraska Association of Teachers of Science .................... vi

Preparation of manuscripts .................... inside back cover

Papers

Environmental impacts in the vicinity of Spencer Hydropower Dam during sluicing activities in the Niobrara River, Nebraska (Michael P. Gutzmer, Justin W. King, and David P. Overhue) .................... 1

Inventory and floristics of Sandhills fens in Cherry county, Nebraska (Gerald Steinauer, Steven Rolfsmeier, and Joyce Phillips Hardy) .................... 9

Xylem pressure potential of two perennial grasses, Bromus inermis and Andropogon …

Predicting Cognitive Capacity From Natural History: Examples From Four Species Of Corvids, Russell P. Balda, Alan Kamil, Peter A. Bednekoff

Papers in Behavior in Biological Sciences

Birds have been studied for centuries because they are numerous, conspicuous, and aesthetically pleasing to humans. Despite their overall regard for birds, historically, many ornithologists have considered birds as instinct-driven organisms of little intellectual capacity. For example, the ornithological textbook of choice from the 1960s states the following view of avian intelligence:

Flight has proven to be an enormously successful evolutionary venture, but one that has cost birds dearly in mental development. In effect, problems merely by flying away from them. … As a consequence, much [avian] behavior is, by mammalian standards, fragmentary, stereotyped, and at times amazingly stupid. (Welty, …

Visual Search For Natural Grains In Pigeons (Columba Livia) : Search Images And Selective Attention, Cynthia M. Langley, Donald A. Riley, Alan B. Bond, Namni Goel

Papers in Behavior in Biological Sciences

The experiments reported here were designed to test the suggestion of many researchers that selective attention to visual features of a prey can account for search-image effects. In 3 experiments pigeons ate wheat and vetch grains presented on multicolored and gray gravel trays. In Experiment 1 search-image effects were evident when grains were cryptic but not when they were conspicuous. Experiment 2 demonstrated that search images can be activated when the grains encountered are either cryptic or conspicuous but that search images affect search performance only when the grains are cryptic. Experiment 3 demonstrated that search images are short-term in …

The Effects Of Aging And Musical Experience On The Representation Of Tonal Hierarchies, Andrea R. Halpern, Seyeul Kwak, James C. Bartlett, W. Jay Dowling

Faculty Journal Articles

Two experiments explored the representation of the tonal hierarchy in Western music among older (aged 60 to 80) and younger (aged 15 to 22) musicians and nonmusicians. A probe tone technique was used: 4 notes from the major triad were presented, followed by 1 note chosen from the 12 notes of the chromatic scale. Whereas musicians had a better sense of the tonal hierarchy than nonmusicians, older adults were no worse than younger adults in differentiating the notes according to musical principles. However, older adults were more prone than younger adults to classify the notes by frequency proximity (pitch height) …

Hearing In The Mind's Ear: A Pet Investigation Of Musical Imagery And Perception, Robert J. Zatorre, Andrea R. Halpern, David W. Perry, Ernst Meyer, Alan C. Evans

Faculty Journal Articles

Neuropsychological studies have suggested that imagery processes may be mediated by neuronal mechanisms similar to those used in perception. To test this hypothesis, and to explore the neural basis for song imagery, 12 normal subjects were scanned using the water bolus method to measure cerebral blood flow (CBF) during the performance of three tasks. In the control condition subjects saw pairs of words on each trial and judged which word was longer. In the perceptual condition subjects also viewed pairs of words, this time drawn from a familiar song; simultaneously they heard the corresponding song, and their task was to …

The Use Of Subjective Ratings Of Perceived Exertion (Rpe) To Estimate Fixed Blood Lactate Concentrations During Incremental Cycle Ergometer Exercise, Keith Robert Scotson

Theses : Honours

Prescription of exercise intensity based on blood lactate concentration has become widely accepted in recent years. The methods used to directly measure blood lactate concentration however, can be costly, time consuming and potentially hazardous to both subject and tester. Recent studies indicate that a strong relationship exists between subjective feelings of strain experienced during exercise and changes in the appearance of blood lactate. This raises the possibility that subjective ratings of perceived exertion (RPE) can be used to simply and effectively estimate and monitor appropriate exercise intensity based on blood lactate concentration. In order to test this theory two groups …

Family Relationships And Estate Transfer – What Should And Can We Do?, Robert J. Fetsch

Range Beef Cow Symposium

"How do we transfer information, values and the land to the next generation of agricultural producers?" is a question often asked. This is an especially important question today as agriculture wrestles with a complexity of stresses and strains as described by Knox (1995):

Agriculture is in the midst of a major transformation from how to produce more to how to produce more efficiently in an evermore competitive and global market. Agricultural production systems must be economically profitable, while at the same time environmentally compatible and socially acceptable. The primacy of the consumer is recognized and is driving the need to …

Biological Determinism And The Human Genome Project: Is The Past Prologue?, Alexandra Dawn Breen

Theses & Honors Papers

In 1989, The National Institutes of Health, in collaboration with the United States Department of Energy, launched a three billion dollar project that could potentially change the way we view human life. The purpose of the project is to map every gene on every chromosome of the human DNA. The Human Genome Project, as it is referred to, is scheduled for completion by the year 2005. The frank reality of the Human Genome Project is that it will indeed offer some real and measurable benefit to different types of people, including some of those inflicted with fatal diseases and disorders; …

Evaluation Of Alternative Crop Rotational Schemes For Cotton Production In Louisiana, Asitava Jana

LSU Historical Dissertations and Theses

Increasing economic importance of cotton production in Louisiana, awareness of the financial and environmental benefits of crop rotations have stressed the need for evaluating cotton production in different rotational schemes. The objective of this study was to estimate profitability of alternative crop rotational schemes within a whole farm context. Yield data for 11 alternative production systems involving cotton, soybean, corn, wheat were obtained from the ongoing crop rotation research at the Northeast Research Station during the period 1983 -1993. Th e systems included continuous, 2 year, and 3 year rotations on two soil types: silt and clay. Price data were …

Agenda: Challenging Federal Ownership And Management: Public Lands And Public Benefits, University Of Colorado Boulder. Natural Resources Law Center

Challenging Federal Ownership and Management: Public Lands and Public Benefits (October 11-13)

Conference organizers, speakers and/or moderators included University of Colorado School of Law professors David H. Getches, Michael A. Gheleta, Teresa Rice, Elizabeth Ann (Betsy) Rieke and Charles F. Wilkinson.

In the face of numerous proposals for privatizing, marketing, and changing the management of public lands, the Natural Resources Law Center will hold its third annual fall public lands conference October 11-13, at the CU School of Law in Boulder.

A panel of public land users and neighbors, including timber, grazing, mining, recreation, and environmental interests, will address current discontent with public land policy and management. There will also be discussion …

Evaluation Of Animal Welfare By The Self-Expression Of An Anxiety State, M. P. Carey, J. P. Fry

Assessment of Animal Welfare Collection

Although mental well-being has long been accepted as an important aspect of animal welfare, the subjective feelings of farm or laboratory animals are regarded as lying beyond the scope of scientific enquiry. We now report that pharmacological conditioning of pigs with a drug, pentylenetetrazole, known to induce anxiety in man, permits investigation of the presence or absence of this psychological state during exposure to a variety of environmental stimuli encountered during normal husbandry. Such pharmacological conditioning therefore provides a valuable means to assess and improve elements of animal welfare and should be applicable to other species that show operant behaviour.

Santa Clara Magazine, Volume 37 Number 4, Fall 1995, Santa Clara University

Santa Clara Magazine

8 - OF QUARKS, OBJECT IDENTIFICATION, AND PORPHYRIN MOLECULES SCU undergraduates get a taste of scientific research. By Miriam Schulman

14 - WHAT'S YOUR BOTTOM LINE? By investing in mutual funds that reflect their values, an increasing number of shareholders hope to put their money where their morals are. But can socially responsible investing really change the world? By Jeff Brazil ' 85

22 - A BIG ENOUGH UMBRELLA Tens of thousands of women from around the world gather for a unifying-albeit rainy- conference in China. Photographs By Kim Johnson ' 87

26 - THE ART OF MATHEMATICS For every …

Nebline, September 1995

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Horticulture

Rural $ense

Family Living

4-H & Youth

Environmental Focus

Community & Leadership Development

Extension Calendar

Expanded Food and Nutrition Education Program (EFNEP)

Nebraska Association for Family and Community Education News

and other extension news and events

Conflict And Cooperation: Sociobiological Principles And The Behaviour Of Pigs, David Fraser, D. L. Kramer, E. A. Pajor, D. M. Weary

Sociobiology Collection

The pig provides many examples of how principles of behavioural ecology and sociobiology can lead to insights into farm animal behaviour. According to parent-offspring conflict theory, parents should tend to give a level of parental investment somewhat below that solicited by the young. When closely confined during lactation, sows can do little to limit the amount of contact with the piglets, and the young stimulate a prolonged, high level of lactation. Certain alternative housing systems allow the sow to limit the stimulation she receives, and the resulting reduction in lactation can actually be advantageous to both parties. Communal care of …

Geodemographic Approaches To Identifying U.S. Furniture Markets, Frank M. Howell, Larry Doolittle, Jarryl B. Ritchie, Melissa A. Barfield, Steven H. Bullard

Faculty Publications

Demand for household furniture is shaped by a multitude of dynamic forces, from the global economic situation to subtle changes in consumer preferences. Correspondingly, the academic disciplines employed to identify, analyze, and predict these forces range from macroeconomics to psychology, and include demography, sociology, geography, and several applied fields. The demographic characteristics of furniture consumers has been a particularly popular area of research, primarily because of the availability of secondary data from various public · agencies. Some of this research is reviewed in a subsequent section of this report.

Military Recreation Programs: Their Role In Quality Of Life Of United States' Service Men And Women And Their Families, Michael Gorham

Masters Theses & Specialist Projects

This thesis was designed to determine the importance of military recreation programs in improving the quality of life of United States service men and women. The study utilized a survey conducted on Fort Campbell, Kentucky, in the Spring of 1995. The results were analyzed individually and as a group. The findings were that military recreation programs play an important role in the quality of life of United States service men and women and their families. These findings were supported by the review of related literature and results from the survey which showed that 70% of the respondent's "Agreed" or "Strongly …

Agricultural Research Division 109th Annual Report 1995

Agricultural Research Division: News and Annual Reports

It is a pleasure to provide the 109th Annual Report of the University of Nebraska Agricultural Research Division (ARD). This report contains lists of current faculty, visiting scientists, and research associates; active research projects; refereed journal articles, books, and book chapters published; theses and dissertations written; germplasm/cultivars released; and awards received by faculty and graduate students. Also included are brief descriptions of accomplishments from selected research projects, information about the programmatic distribution of resources, and the financial report for the period July 1, 1994, to June 30, 1995. This report was compiled in compliance with the intent of the law …

Sustainable Use Of The Denver Basin, Charles B. White

Sustainable Use of the West's Water (Summer Conference, June 12-14)

20 pages.

Contains footnotes.

Table Of Contents Volume Six, Number Three, Summer 1995, Risk Editorial Board

RISK: Health, Safety & Environment (1990-2002)

Table of contents for the journal RISK: Health, Safety & Environment (ISSN: 1073-8673)

Decision Analysis And Fda Drug Review: A Proposal For Shadow Advisory Committees, John M. Mendeloff

RISK: Health, Safety & Environment (1990-2002)

The FDA seems to acknowledge that sometimes different standards of proof for assessing drug efficacy should be used. Dr. Mendeloff thus proposes a methodology that might illuminate the FDA's decision-making and help better to assess its decisions.

Mirror Use By African Grey Parrots (Psittacus Erithacus), Irene M. Pepperberg, Sean E. Garcia, Eric C. Jackson, Sharon Marconi

Sentience Collection

No abstract provided.

Nebraska Farm Real Estate Market Developments 1994-95, Bruce Johnson

Nebraska Farm Real Estate Reports

Agricultural land values in Nebraska rose an average of 2.8 percent during the year ending February I, I995. While this represented the eighth straight year of value advances, it was the smallest annual percentage change of that period. Relative stability in agricultural real estate values during I994 was prevalent across the state with only, slight percentage changes in either direction recorded across the various types of land and location.

Despite a poor livestock economy, non tillable grazing land had the largest percentage gain during the I2-month period (4.9 percent). In contrast, gravity irrigated cropland rose only I percent for the …

Present Risk, Future Risk Or No Risk - Measuring And Predicting Perceptions Of Health Risks Of A Hazardous Waste Landfill, William K. Hallman, Abraham H. Wandersman

RISK: Health, Safety & Environment (1990-2002)

Given that perceived risk is multidimensional, the authors seek better understanding by focusing on health risks and, more particularly, on their temporality. In this way, they attempt to measure more meaningfully psychological influences on risk perceptions.

Ranking Risks, Baruch Fischhoff

RISK: Health, Safety & Environment (1990-2002)

Dr. Fischhoff considers the role of government in helping citizens manage risks. He then offers a general procedure for risk ranking and concludes by discussing what can be done with a list of risks.

The Role Of The Unconscious In The Perception Of Risks, Andrew F. Fritzsche

RISK: Health, Safety & Environment (1990-2002)

Dr. Fritzsche argues that our world is too "rational" and that the psychology of the unconscious, as developed by Jung, can be key to understanding responses to hazards and to resolving conflicts that arise in the political management of risks.

Circadian Rhythm Of Brain Gaba Levels In The Cockroach, Leucophaea Maderae, Juli Martin Mccay, Jeanette Marie Gibson

Mahurin Honors College Capstone Experience/Thesis Projects

Brain levels of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) were determined at three-hour intervals in roaches acclimated to a 12-hour lightl12-hour dark cycle (light onset 0600 h) at 25 ± 2° C using high performance liquid chromatography coupled with fluorometnc detection GABA levels were found to be highest at noon and lowest at 1800 h. A difference between the high and low levels at these two times remained during the second day under constant dark conditions, indicating that GABA levels do indeed vary on a circadian basis. Brain GABA levels were highest at a time of day that corresponded with …