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Articles 15601 - 15630 of 17321
Full-Text Articles in Entire DC Network
Iowa Academy Of Science Membership Directory, 2001-2002, Iowa Academy Of Science
Iowa Academy Of Science Membership Directory, 2001-2002, Iowa Academy Of Science
Iowa Academy of Science Documents
Contents:
Editorial Board, Journal ... 5
Committees ... 6
Sections ... 14
ISTS Regional Directors ... 18
Awards of Merit ... 20
Excellence in Science Teaching Awards ... 21
Past Presidents ... 22
Membership Roster ... 23
Institutional Members ... 23
Corporate Sponsors ... 60
Editorial Board & Iowa Academy Of Science Officers And Directors
Editorial Board & Iowa Academy Of Science Officers And Directors
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Effect Of Animal Grouping On Feeding Behavior And Intake Of Dairy Cattle, R. J. Grant, J. L. Albright
Effect Of Animal Grouping On Feeding Behavior And Intake Of Dairy Cattle, R. J. Grant, J. L. Albright
Department of Animal Science: Faculty Publications
Although data are scarce, it is clear that grouping strategy can have a significant impact on the feeding behavior and feed intake of dairy cattle. Feed intake is controlled by ruminoreticular fill and physiological mechanisms, but grouping is a component of the cow’s feeding environment that can modulate intake as a result of its impact on cow comfort, competition for feed and other resources, and herd health. Social dominance and competition for feed impact feeding behavior and proper grouping strategy will minimize the negative impact of excessive competition on intake and enhance beneficial effects of group feeding such as social …
The Effects Of Social Physique Anxiety Levels, Body Mass Index, And Program Type On Exercise Adherence And Reasons For Exercise, Colleen N. Vandever
The Effects Of Social Physique Anxiety Levels, Body Mass Index, And Program Type On Exercise Adherence And Reasons For Exercise, Colleen N. Vandever
Masters Theses
The purpose of this study was to compare adult females across various age groups, body mass index, and exercise facilities on their levels of social physique anxiety, reasons for exercise, and adherence rates over an 8-week period. Female members of the Eastern Illinois University Adult Fitness Program (n = 14), Curves for Women (n = 19), and the Sarah Bush Lincoln Health Center Employee Wellness Program (n = 14) took part in the study. Two age group categories were made: 30-50 (n = 21) and 51+ (n = 26) in order to compare female age groups. Specifically, the purposes of …
Factors Affecting Small Intestine Development In Weanling Pigs, Steven J. Kitt, Phillip S. Miller, Austin Lewis
Factors Affecting Small Intestine Development In Weanling Pigs, Steven J. Kitt, Phillip S. Miller, Austin Lewis
Nebraska Swine Reports
The pig faces significant biological and environmental challenges after weaning. A great deal of information is available on behavior, environment, health, and nutrition of the newly weaned pig; however, newly weaned pigs still suffer a growth lag. The pig’s small intestinal structure and function is altered during the days that follow weaning. As a consequence, the digestive and absorptive capacity of weanling pigs is decreased during this period and this may be partially responsible for the post weaning growth lag. Additionally, health benefits may be associated with an improved small intestinal structure and function. The goal of this article is …
Spatial And Temporal Distribution Of Tsetse Fly Trap Catches At Nguruman, Southwest Kenya, A. Odulaja, J. Baumgärtner, S. Mihok, I. M. Abu-Zinid
Spatial And Temporal Distribution Of Tsetse Fly Trap Catches At Nguruman, Southwest Kenya, A. Odulaja, J. Baumgärtner, S. Mihok, I. M. Abu-Zinid
All Peer-Reviewed Publications
Spatial and temporal dynamics of rapidly growing populations of tsetse flies at Nguruman, southwest Kenya during 1993-1995, were investigated, following six years of intensive population suppression with traps over a c. 100 km2 area. The two tsetse species present were randomly distributed in the short rainy season, but were aggregated in the dry and long rainy seasons. Maximum temperature was the dominant weather factor associated with the degree of aggregation. Trends in catches at 20 fixed sites along an 18 km north-south axis were weakly correlated between locations, possibly representing population sub-structuring. In particular, trends in population change were poorly …
Approaches To Measuring Quality Of The Wilderness Experience, William T. Borrie, Robert M. Birzell
Approaches To Measuring Quality Of The Wilderness Experience, William T. Borrie, Robert M. Birzell
Society and Conservation Faculty Publications
Wilderness is a special place that provides opportunity for unique and profound experiences. An essential task for the maintenance of these recreational opportunities is the definition and monitoring of experience quality. Four approaches to the measurement of the wilderness experience have developed in over 30 years of research: satisfaction approaches (which focus on evaluation of onsite conditions), benefits-based approaches (focusing on psychological outcomes), experience-based approaches (describing cognitive states experienced in wilderness), and meanings-based approaches (documenting socially constructed meanings ascribed to the experience). Each approach has its strengths and weaknesses. Given that the wilderness experience is a multifaceted phenomenon, it is …
Crossing Methodological Boundaries: Assessing Visitor Motivations And Support For Management Actions At Yellowstone National Park Using Quantitative And Qualitative Research Approaches, William T. Borrie, Wayne A. Freimund, Mae A. Davenport, Robert E. Manning
Crossing Methodological Boundaries: Assessing Visitor Motivations And Support For Management Actions At Yellowstone National Park Using Quantitative And Qualitative Research Approaches, William T. Borrie, Wayne A. Freimund, Mae A. Davenport, Robert E. Manning
Society and Conservation Faculty Publications
Winter use of Yellowstone National Park has given rise to a complex of management issues, including rapid growth in recreation demand, environmental impacts of snowmobiling, and a string of litigation against the National Park Service (NPS) designed to both protect park resources and maintain public access (Sacklin et al. 2000). The intertwined character of these problems suggests that none can be resolved independently of the other, that policy must be comprehensive in nature, and that many sources of knowledge may be required to effect their resolution.
Developmental Coordination Disorder: A Discrete Disability, Beth P. Hands, Dawne Larkin
Developmental Coordination Disorder: A Discrete Disability, Beth P. Hands, Dawne Larkin
Health Sciences Papers and Journal Articles
Children with Developmental Coordination Disorder (DCD) have a motor learning disability that reduces their ability to interact with the environment and compromises their social and emotional development. Accordingly, these children should be given the extra assistance and consideration given to children with other learning difficulties. Even though many countries have well developed policies to support students at educational risk, children with movement difficulties are not widely considered to be members of this category. This paper argues for a change in education policy and practice in order to better support children with DCD or Motor Learning Disability (MLD). Improved teacher education …
Genes, Categories, And Species: The Evolutionary And Cognitive Causes Of The Species Problem, Michael Dietrich
Genes, Categories, And Species: The Evolutionary And Cognitive Causes Of The Species Problem, Michael Dietrich
Dartmouth Scholarship
Review of Genes, Categories, and Species: The Evolutionary and Cognitive Causes of the Species Problem by Jody Hey.
Hard Cases For Autonomy, Respect, And Professionalism In Medical Genetics, Roger B. Dworkin
Hard Cases For Autonomy, Respect, And Professionalism In Medical Genetics, Roger B. Dworkin
Articles by Maurer Faculty
No abstract provided.
Comparative Development, Longevity And Population Growth Of Exotic And Native Parasitoids Of Lepidopteran Cereal Stemborers In Kenya, J. C. Mbapila, W. A. Overholt
Comparative Development, Longevity And Population Growth Of Exotic And Native Parasitoids Of Lepidopteran Cereal Stemborers In Kenya, J. C. Mbapila, W. A. Overholt
All Peer-Reviewed Publications
Studies on the effect of temperature on the development, longevity and population growth of Cotesia flavipes Cameron and Cotesia sesamiae (Cameron) indicated that the development of both Cotesia spp. from oviposition to cocoon formation and adult emergence was inversely related to temperature. The longevity of the parasitoids was also inversely related to temperature. Both parasitoids lived longer when moisture and food (agar + honey/water) were provided. The mean number of females and total adult progeny produced by C. flavipes on two host species were, in most cases, higher than C. sesamiae. The intrinsic rate of natural increase of C. flavipes …
Influence Of Androstenedione On Sedentary Female Rats, Janet E. Steele
Influence Of Androstenedione On Sedentary Female Rats, Janet E. Steele
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
The pUfPose of this study was to examine the influence of androstenedione supplementation on plasma testosterone, cortisol, and cholesterol, mean arterial pressure (MAP), body weight, organ weights, and bone mineral density (BMD) in female rats. At age 10 weeks, an initial BMD measure was made. Rats in the andro group (n = 13) received implants designed to deliver 1 μg androstenedione per gram body wt per day. Rats in the control group (n = 13) received similar implants containing dextrose. After 8 weeks an arterial catheter was surgically implanted. MAP was measured for 30 minutes during home cage rest and …
Transactions Ofthe Nebraska Academy Of Sciences: Volume 27, 2001 Table Of Contents
Transactions Ofthe Nebraska Academy Of Sciences: Volume 27, 2001 Table Of Contents
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Table of Contents
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
Physics scores as predictors of the Medical College Admissions Test (Isabelle D. Cherney and Michael G. Cherney).....................1
The terrestrial isopods of Nebraska (Crustacea: Isopoda)(William F. Rapp).....................9
Results of the first anuran calling survey in Nebraska (David S. McLeod, John T. Vaughan, Kevin E. Church, and Daylan Figgs).....................13
Influence of androstenedione on sedentary female rats (Janet E. Steele).....................17
Pumpkinseed population characteristics in Nebraska Sandhills lakes (Pisces, Centrarchidae: Lepomis …
Way-Finding And Landmarks: The Multiple Bearings Hypothesis, Alan C. Kamil, Ken Cheng
Way-Finding And Landmarks: The Multiple Bearings Hypothesis, Alan C. Kamil, Ken Cheng
Papers in Behavior in Biological Sciences
Clark’s nutcrackers (Nucifraga columbiana) are capable of very precise searching using the metric relationships between a goal and multiple landmarks to relocate the goal location. They can judge the direction more accurately than the distance to a landmark when the landmark is distant from the goal. On the basis of these findings, we propose that nutcrackers use a set of bearings, each a measure of the direction from the goal to a different landmark, when searching for that goal. The results of a simulation demonstrate that increasing the number of landmarks used results in increasingly precise searching. This …
Review Of Evolution And Cognition, Edited By Cecilia Heyes And Ludwig Huber., Alan Kamil
Review Of Evolution And Cognition, Edited By Cecilia Heyes And Ludwig Huber., Alan Kamil
Papers in Behavior in Biological Sciences
Heyes and Huber have edited a volume that surveys much of the current research into cognition in animals, reflecting the strengths and weaknesses of this field. The book is divided into five sections. In the first part, titled “Orientations,” four authors lay out their basic general views of the field. The first two chapters in this section are by the editors. First, Heyes makes the case for an approach to evolutionary psychology that she labels “in the round,” an approach that would encompass studies of human and nonhuman animals alike and include a broad range of contemporary evolutionary approaches. This …
Absolute Pitch And Planum Temporale, Julian P. Keenan, Van Thangaraj, Andrea R. Halpern, Gottfried Schlaug
Absolute Pitch And Planum Temporale, Julian P. Keenan, Van Thangaraj, Andrea R. Halpern, Gottfried Schlaug
Faculty Journal Articles
An increased leftward asymmetry of the planum temporale (PT) in absolute-pitch (AP) musicians has been previously reported, with speculation that early exposure to music influences the degree of PT asymmetry. To test this hypothesis and to determine whether a larger left PT or a smaller right PT actually accounts for the increased overall PT asymmetry in AP musicians, anatomical magnetic resonance images were taken from a right-handed group of 27 AP musicians, 27 nonmusicians, and 22 non-AP musicians. A significantly greater leftward PT asymmetry and a significantly smaller right absolute PT size for the AP musicians compared to the two …
Evolutionary Analysis In Law: Some Objections Considered, Owen D. Jones
Evolutionary Analysis In Law: Some Objections Considered, Owen D. Jones
Vanderbilt Law School Faculty Publications
This Article appears in a special issue of the Brooklyn Law Review on DNA: Lessons from the Past - Problems for the Future. It first addresses why law needs insights from behavioral biology, and then identifies and responds to a variety of structural and conceptual barriers to such evolutionary analysis in law.
Accurate 3-D Morphological Measurement Using A Structured-Light Range Sensor, Robert L. Cromwell, Stuart G. Poss
Accurate 3-D Morphological Measurement Using A Structured-Light Range Sensor, Robert L. Cromwell, Stuart G. Poss
Gulf and Caribbean Research
A single-plane structured light range-sensor was tested to establish its usefulness in acquiring 3-D measurements of fish skulls. Twenty-one distances among 22 landmark points for each of 12 neurocrania of the scorpaenid fish Neomerinthe hemingway were taken with digital calipers, with a video-based 2-D imaging system widely used in systematic studies, and with a single-plane structured-light range sensor of inexpensive and simple design. Measures taken by 3-D sensor are highly correlated with those obtained from caliper measurement (r = 0.9995, P << 0.001 ), with a precision ranging from 0.08–0.43 mm. Like caliper-based measurements, they are less strongly correlated with measurements derived from projected video-imaging. Most skulls were scanned in just over 3 minutes each. Range maps, typically establishing the (x,y,z) coordinates of more than 75,000 points per scan, can be obtained in about 40–50 CPU seconds using software running on multiple platforms. Sensor data taken from different views can be merged to build a more complete 3-D reconstruction. System design, calibration, and use are discussed. By eliminating error due to perspective effects inherent in measuring from projected video images, such sensors hold considerable promise in quantifying biological shape in 3-D for comparative and functional studies.
Physics Scores As Predictors Of The Medical College Admissions Test, Isabelle D. Cherney, Michael G. Cherney
Physics Scores As Predictors Of The Medical College Admissions Test, Isabelle D. Cherney, Michael G. Cherney
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Assessment tools used in a physics course were evaluated in terms of their predictive ability of student performance on the medical colleges admissions test (MCAT) physical sciences subtest. In particular, using regression and correlational analyses, relationships between the exams, final exam, overall semester scores, quiz scores, lab scores, paper score, and the MCAT scores on the physical sciences subtest were analyzed. The strongest correlations with the subtest scores existed with those tools that assessed analytical abilities. Specifically, the score on a comprehensive, multiple-choice final exam provided a single tool that can serve as an effective predictor of the subtest score. …
Determining The Termination Percentage Of Heart Rate Maximum For Submaximal Testing, Julia A. Valentour
Determining The Termination Percentage Of Heart Rate Maximum For Submaximal Testing, Julia A. Valentour
College of Graduate Studies: Theses & Dissertations (1964–2006)
BACKGROUND: In the Fourth Edition of the American College of Sports Medicine's Guidelines for Exercise Testing and Prescription (1991). the protocol for the ACSM's submaximal bike test was to terminate the test at 65-70% of the age predicted maximal heart rate. In the Fifth Edition, this was changed to 85% of the age-predicted maximal heart rate.
OBJECTIVES: The purpose of this study was to find out, by using the ACSM submaximal cycle ergometer test (see Appendix A) if the 85% heart rate maximum termination provides a more accurate estimate of maximal aerobic capacity than the 70% heart rate maximum termination. …
The Relationship Between Jealousy And Self-Esteem In Collegiate Athletes, Paula M. Parker
The Relationship Between Jealousy And Self-Esteem In Collegiate Athletes, Paula M. Parker
College of Graduate Studies: Theses & Dissertations (1964–2006)
Previous research has found contradictory results when examining the possible relationship between jealousy and self-esteem (Guerrero & Afifi, 1998, Mathes & Severa, 1981; Mikulincer, Bizman, & Aizenberg, 1989, Peretti & Pudowski, 1997; Stewart & Beatty, 1985; White, 1981). Jealousy has been most often researched in romantic relationships (Peretti & Pudowski, 1997; Salovey & Rodin, 1986) and social comparison situations (Bers & Rodin, 1984, Mikulincer, Bizman, & .Aizenberg, 1989). Few studies have examined jealousy in an athletic setting. Sport jealousy has received little attention because until recently, there was no reliable instrument to measure jealousy in sport. Pease (1987) investigated the …
Aspects Of The Taxonomy And Ecology Of The Ground Beetle (Coleoptera: Carabidae) Assemblage Of The Swan Coastal Plain : (With Particular Reference To Habitat Fragmentation And The Quindalup Dune System), Nadine A. Guthrie
Theses: Doctorates and Masters
Long term studies encompassing seasonal variation in abundance and species present, forming base-line phenological data, arc required to understand the responses of the carabid (Ground Beetle) fauna to major habitat changes. In addition, few habitats unaffected by human disturbance remain in Australia, and evaluation of these fauna in these areas is required before further habitat loss occurs. Generally an unknown group of terrestrial predatory invertebrates in Australia, carabids have been the subjects of few ecological studies in this country. This restricts the utility of the Carabidae in environmental or conservation assessment programs in Australia. A study was initiated to assess …
Duane Isely (1918-2000): A Tribute, Stanley L. Welsh, Deborah Q. Lewis
Duane Isely (1918-2000): A Tribute, Stanley L. Welsh, Deborah Q. Lewis
Journal of the Iowa Academy of Science: JIAS
Duane Isely, Distinguished Professor Emeritus, Department of Botany, Iowa State University, Ames, Iowa, died on 6 December 2000. Dr. Isely was an outstanding plant taxonomist with expertise in other fields as well, especially in seed technology and weed identification and control. He was born in Bentonville, Arkansas, on 24 October 1918 into a family of academicians. His father, Dwight Isely, was professor and later Dean of Agriculture at the University of Arkansas, and his mother, Blessie Elise Dort Isely, also taught at the University of Arkansas and eventually received her Ph.D.
The Annual Meeting Of The Iowa Academy Of Science April 20-21, 2001 [Program, 113th Meeting], Iowa Academy Of Science
The Annual Meeting Of The Iowa Academy Of Science April 20-21, 2001 [Program, 113th Meeting], Iowa Academy Of Science
Iowa Academy of Science Documents
Contents:
Program Summary --- 1
General Session Speakers --- 4
Awards --- 7
Symposia Programs --- 8
Special Events --- 8
Poster Sessions --- 9
Section Programs/Special Sessions --- 9
Agricultural Sciences --- 9
Anthropology --- 10
Botany --- 11
Cellular, Molecular & Microbiology --- 15
Chemical Education --- 13
Chemistry: Inorganic, Analytical & Physical --- 16
Chemistry: Organic & Biological --- 16
Conservation --- 17, 24
Earth Science Teaching --- 13
Elementary Science Teaching --- 13
Engineering --- 12
Geology --- 17, 19
Physics --- 20
Physiology --- 20
Psychology & Linguistics --- 10
Science Teaching --- 13, 22, …
Iowa Academy Of Science 113th Annual Meeting [2001]: Advance Program, Iowa Academy Of Science
Iowa Academy Of Science 113th Annual Meeting [2001]: Advance Program, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
An Analysis Of A Radio Frequency Sensor As A Means To Remotely Sense Selected Surface Topographies In An Agriculture Environment, Barry Michael Alexia
An Analysis Of A Radio Frequency Sensor As A Means To Remotely Sense Selected Surface Topographies In An Agriculture Environment, Barry Michael Alexia
Dissertations and Theses @ UNI
Remote sensing is the science and art of obtaining information about an object, area or phenomenon through the analysis of data acquired by a device that is not in contact with the object, area, or phenomenon under investigation. The remotely sensed data can be of many forms, including variations in force distribution, acoustic wave distribution, or electromagnetic energy distribution.Information thus acquired can be used for observing,monitoring, and studying planetary surfaces and environments.
Because there are many ways to acquire data about targets of interest, there are many types of remote sensors that can be used, including visible, infrared, and active …
Cognitive Differences In Chart Reading: A Comparison Of Nurses And Physicians, Todd R. Johnson, Vimla L. Patel, James P. Turley
Cognitive Differences In Chart Reading: A Comparison Of Nurses And Physicians, Todd R. Johnson, Vimla L. Patel, James P. Turley
Faculty, Staff and Student Publications
This pilot study compares the mental models of a patient constructed by nurses and physicians while reading an electronic medical record. Preliminary results suggest that the participants' summaries were both quantitatively and qualitatively different. The physician made more inferences and focused on deeper relationships in the record, whereas the nurse focused on the descriptive surface structure of the record.
Possible Levels Of Animal Consciousness With Reference To Grey Parrots (Psittacus Erithacus), Irene M. Pepperberg, Spencer K. Lynn
Possible Levels Of Animal Consciousness With Reference To Grey Parrots (Psittacus Erithacus), Irene M. Pepperberg, Spencer K. Lynn
Sentience Collection
Researchers often study nonhuman abilities by assuming their subjects form representations about perceived stimuli and then process such information; why then would consciousness be required, and, if required, at what level? Arguments about nonhuman consciousness range from claims of levels comparable to humans to refutation of any need to study such phenomena. We suggest that (a) species exhibit different levels attuned to their ecological niches, and (b) animals, within their maximum possible level, exhibit different extents of awareness appropriate to particular situations, much like humans (presumably conscious) who often act without conscious awareness of factors controlling their behavior. We propose …
Spontaneous Discrimination Of Natural Stimuli By Chimpanzees (Pan Troglodytes), David A. Brown, Sarah T. Boysen
Spontaneous Discrimination Of Natural Stimuli By Chimpanzees (Pan Troglodytes), David A. Brown, Sarah T. Boysen
Sentience Collection
Six chimpanzees (Pan troglodytes) were presented with pairs of color photographic images of 5 different categories of animals (cat, chimp, gorilla, tiger, fish). The subjects responded to each pair using symbols for "same" and "different." Both within- and between-category discriminations were tested, and all chimpanzees classified the image pairs in accordance with the 5 experimenter-defined categories under conditions of nondifferential reinforcement. Although previous studies have demonstrated identification or discrimination of natural categories by nonhuman animals, subjects were typically differentially reinforced for their responses. The present findings demonstrate that chimpanzees can classify natural objects spontaneously and that such classifications may be …