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Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Tell-Tail Adaptations For Respiration And Rapid Escape In A Freshwater Oligochaete (Lumbriculus Variegatus Mull.), Charles D. Drewes

Journal of the Iowa Academy of Science: JIAS

The aquatic oligochaete, Lumbrimlus variegatus (Order Lumbriculida; Family Lumbriculidae), utilizes a combination of postural and anatomical specializations that enhance gas exchange across the dorsal surface of posterior segments as these segments lay exposed at the air-water interface. Predator avoidance by exposed posterior segments is enhanced by neurobehavioral mechanisms involving a well-developed lateral giant nerve fiber system that mediates rapid escape withdrawal of the worm's tail in response to shadow or mechanosensory stimuli.

Time To Metamorphosis As A Function Of Larval Size In A Population Of Ambystoma Tigrinum Salamanders Consisting Of Cannibal And Typical Morph Phenotypes, Michael J. Lannoo, Michael P. Sweet, Nancy M. Ladehoff, Edmund S. Fangman, William B. Collins

Journal of the Iowa Academy of Science: JIAS

Salamander larvae of the species Ambystoma tigrinum are dimorphic in northwestern Iowa. In addition to common typical morphs, there exist rare, specialized cannibal morphs, which are induced environmentally by crowding. Cannibal morph phenotypes are characterized morphologically by their large size, proportionately large heads and hypertrophied vomerine teeth, and behaviorally by facultative cannibalism. During metamorphosis amphibians are particularly sensitive to predation. To help understand why cannibal morphs are uncommon, we have raised cannibal and typical morphs in isolation and under crowded conditions to compare the timing and duration of metamorphosis between these morphs. Results show that larger larvae, most of which …

The Mating Systems And Pollination Biology Of Three Species Of Verbena (Verbenaceae), Robert W. Cruden, Kristina K. Baker, Thomas E. Cullinan, Karen A. Disbrow, Kelly L. Douglas, John D. Erb, Kenneth J. Kirsten, Mary L. Malik, Elizabeth A. Turner, Jonathon A. Weier, Sherry R. Wilmot

Journal of the Iowa Academy of Science: JIAS

Because their flowers can be cross- and/or self-pollinated Verbena stricta, V hastata and V urticifolia are facultatively xenogamous. We suggest the flowers can be cross-pollinated because I) the fruit set of caged plants was substantially lower than that of open-pollinated plants, i.e. pollinators were necessary for typical fruit set and 2) the flowers of each species attracted a diverse array of hymenopteran, dipteran and lepidopteran pollinators that were capable of moving pollen between plants. Self-pollination was low due to the spatial separation of anthers and stigmas and/or an angled corolla that decreased the likelihood of pollen dropping from the anthers …

A Summer Course In Invertebrate Developmental Biology At Iowa Lakeside Laboratory: A Unique Experience, Carol W. Schutte, Dale J. Witt, Nicole Y. Janosek, Douglas E. Robinson, Edwin C. Powell, George G. Brown

Journal of the Iowa Academy of Science: JIAS

The course, "Developmental Biology of Selected Invertebrates'', has been offered in alternate years at Iowa Lakeside Laboratory (Ill) on Lake West Okoboji, Dickinson County, Iowa, since the first summer session of 1983. This course has taken advantage of the great diversity of invertebrates found in the Ill area and has demonstrated to students and faculty alike the exciting phenomena and principles of developmental biology. The course is continuously evolving as new experiments and observations are discovered with each offering of the course.

Commitment To Writing: A Sourcebook For Faculty Across The Disciplines, Charlene M. Eblen

History of Education Book Gallery

No abstract provided.

Assessing Joint Mobility Of The Lower Extremities When Walking In Water Through The Use Of Motion Analysis, Jennifer Evitts

Presidential Scholars Theses (1990 – 2006)

Despite the lack of any attempts to quantify the ROM while walking in water, several products have recently been introduced which utilize the concept of an underwater treadmill to harness the advantages of walking in water, one of which includes an increase in ROM. The purpose of this study is to utilize motion analysis to qualitatively and quantitatively analyze the ROM of the ankle, knee, and hip when walking in the water and to compare these results to those observed when walking on land .

Adaptive Coloration In Texas Fiddler Crabs (Uca), Carl L. Thurman

Faculty Work

Five species of fiddler crabs occupy a variety of intertidal niches along the Texas coast. Each Uca is adapted to a specific array of physical factors in the environment. Some aspects of their adaptations are reflected by body color. Interspecific differences in morphological coloration are correlated with camouflage and substrate characteristics. Intraspecific color variation is expressed through neurosecretion-mediated physiological change in cellular pigment distribution. Adaptation to a dark or light colored background reveals different "secondary" chromomotor capabilities for each species. In addition, pigments in melanophores, leucophores and erythrophores exhibit circadian rhythms of dispersion and aggregation.

During a "primary" chromomotor response …

Distribution Of On-Campus Grades For Fall Semester 1990, Gerald D. Bisbey, Office Of Institutional Research. University Of Northern Iowa.

History of Education Book Gallery

This report is the next in the sequence of such reports being sent each semester to give the University community information concerning grade distributions. These grade distributions are by instructional areas and/or programs rather than departments only. Thus areas such as Educational Media Center, Individual Studies, and Human Relations are also identified. By request, the Humanities and General Sciences areas have been retained with the appropriate departments.

Changes In A Prairie Bird Population From 1940 To 1989, Neil P. Bernstein, Kristine K. Baker, Sherry R. Wilmot

Journal of the Iowa Academy of Science: JIAS

We repeated a bird census of a prairie/field community that was done by Kendeigh (1941) in 1940. Changes in the bird populations were compared with changes in vegetation, agricultural land use for the county, and trends in urbanization. Grassland birds did decline in abundance due to causes similar to those cited in other studies. The increase in forest and edge nesting species was more unusual to this study, and probably correlated with the woody succession that had occurred.

Gas Exchange Of Four Viburnum Species, Lisa Gayle De Berg

Dissertations and Theses @ UNI

In the natural environment, a plant's gas exchange and water use efficiency characteristics in response to environmental stresses such as vapor pressure deficit, temperature, light intensity, and water potential may vary according to physiological and morphological species differences, leaf types (deciduous or evergreen), and habitat types (northern and southern). In the field, laboratory, and growth chamber, the effect of vapor pressure deficit, temperature, and light intensity on gas exchange characteristics was investigated for four woody shrub species from the genus Viburnum. The species under investigation include: y. rhytidophyllum (northern evergreen), y. awabuki (southern evergreen), y. dentatum (northern deciduous), and y. …

Anaerobic Power Of A College Basketball Team Throughout One Season, Mark Frederick Ackerman

Dissertations and Theses @ UNI

The purpose of this study was to describe the changes in anaerobic power of a NCAA Division I men's college basketball team over the course of a season using the Wingate Anaerobic Test.

Administered on a bicycle ergometer, the Wingate Anaerobic Test was given to 15 members of the University of Northern Iowa men's basketball team four different times over the course of a season. During the season the team participated in no specific conditioning program for anaerobic power and relied on regular practices and games for all conditioning.

The Wingate Anaerobic Test measured maximal anaerobic power, anaerobic capacity, and …

Power Differentials In Marriage: A Model, Jean Litterer Goings

Dissertations and Theses @ UNI

This paper is an analysis of the concept of marital power in terms of its effect on t he distribution of power among spouses. Chapter 1 provides an introduction to the topic of marital power. Subsequent chapters define power from three main sources: conflict theory , exchange theory, and a contemporary literature review. An examination in Chapter 2 of contemporary perspectives on power includes the following areas: sources of power in marriage, historical changes in marital power, factors affecting power and other considerations of power. factors are inseparable. It becomes evident that these

Positive Effects Of Humor: No Laughing Matter In The Education Of Students, Edward C. Poynar

Graduate Research Papers

Frequent] y, responses from student surveys identify "has a sense of humor" among the characteristics of a good teacher. Unfortunately, this is not a quality that is emphasized in teacher education programs so apparently it is not deemed worthy of consideration by teacher educators. Yet, the thought of humor in the classroom does have a certain appeal and possibly raises a few questions. What purpose can a teacher's sense of humor serve for a student? Does educational research indicate any cause and effect relationship between humor and cognitive development? How does humor affect the thinking processes? If the theory of …

1990 Unique And Just A Little Bizarre, Northern University High School

Malcolm Price Laboratory School Yearbooks

The student yearbook of the Northern University High School, part of the Malcolm Price Laboratory School of the University of Northern Iowa.

Leadership Theories And Practices To Strengthen Student Activities: A Case Study Of The University Of Northern Iowa English Club, Deborah Lyn Hoepner

Presidential Scholars Theses (1990 – 2006)

As a senior at the University of Northern Iowa ( UNI), my project to fulfill a segment of my Presidential Scholarship is to plan and propose a structure change for leadership within the UNI English Club. Currently, I am acting as an intern for the English Department. For my internship, I act as the student contact for the four student organizations/activities within the department: English Club, Inner Weather, Sigma Tau Delta, and The Student As Critic Conference (an annual, state wide essay competition held on campus).

The written components of my project consist of a paper dealing with a proposal …

Factors Related To The Occurrence Of Certain Prairie Graminoid Species In Black Hawk County, Iowa, Roadsides, Pauline Mary Drobney

Dissertations and Theses @ UNI

The native vegetation of Iowa was primarily tallgrass prairie and currently exists only in small isolated parcels, including some remnants occurring in roadsides. Roadside prairie remnants are important for historical, environmental, aesthetic, scientific, and economic reasons. Information about factors influencing the occurrance of roadside prairie vegetation could be useful to roadside vegetation managers in development of initial vegetation surveys and subsequent to restoration of roadside prairie vegetation.

This study was conducted to determine what factors most affected the percent coverage of prairie graminoids in roadsides; particularly soil moisture availability, drainage, soil disturbance, and availability of a prairie seed sources. Prairie …

The Importance Of Technology Assessment Procedures For Missionary Trainees, James Michael Hoeksema

Dissertations and Theses @ UNI

The purpose of this study was to identify those technology assessment (TA) procedures that are most important to teach to missionary trainees. This was based on the perceptions of the chief executive officers of U.S. Protestant mission agencies.

A survey was used to collect the research data. A total of 175 usable survey instruments were returned (25.6%). Analysis of the data consisted of frequency distributions and Chi-square.

A "common core" of TA procedures which are being used by mission agencies was identified. These were: (a) on-site field investigation, (b) committee meetings, (c) brainstorming, (d) personal interviews, (e) review of related …

Incidence Of Adolescent Depression In A Parochial High School, Silvio R. Encinas

Dissertations and Theses @ UNI

In recent years the problem of depression among children and adolescents has become increasingly important to educators and mental health professionals such as school psychologists. Documented increases in depressive symptoms among school-age youth may be reflected in an increase in acting out behaviors in the school settings which, in turn may adversely affect academic performance, teacher expectations, and peer relationships. This study investigated the incidence of depression in a parochial high school using a self-report procedure and compared with non-parochial studies. Differences between male and female students were analyzed, it was expected to find also an inverse correlation between the …

Factors Associated With Student Success In A University Tutorial Program: Does High School Gpa, Act Scores Or Time Spent With A Tutor Make A Difference, Lea Lynnette Roseberry

Dissertations and Theses @ UNI

This thesis attempts to detect differences between those students who receive tutoring and gained passing grades and those who received tutoring and gained failing grades. Differences are detected by investigating three different independent variables; high school grade point average, American College Test (ACT) scores and time spent with a tutor. The subjects were University of Northern Iowa students who had received tutorial services from Student Support Services from the years 1985 to 1989. The research questions were as follows. 1. Did the students who produced passing grades differ from those who did not on their high school grade point averages …

Assessment Of The Process Of Reading Through The Use Of Think-Aloud Protocols With Elementary Students, Jacqueline F. Holdorf

Dissertations and Theses @ UNI

This study was undertaken to investigate the ability of elementary students to generate verbal reports during a reading task, and to determine whether differences in protocols produced exist between readers of differing ability and verbal activity.

The 20 experimental subjects were 5th and 6th grade students from one classroom in an Iowa school district. The subjects were classified as good and poor readers, and verbal and less verbal. Reading ability classifications were based on the Iowa Tests of Basic Skills. Verbal activity classifications were based on teacher judgment.

The subjects were asked to read a passage and then to verbalize …

Identifying Factors Related To Computer Anxiety, David J. Bohlke

Dissertations and Theses @ UNI

This investigation centers on the impact the computer, as an instrument, has on computer anxiety. Other variables examined were gender, age, academic experience, and computer experience. Eighty-three rural Iowa high school juniors and seniors were administered a Computer Opinion Survey {Maurer & Simonson, 1984) as a measure of computer anxiety. Subjects were randomly assigned to either a control group that completed the survey using the traditional paper and pencil method, or an experimental group which completed the survey by entering their responses at a computer terminal. It was anticipated that if the computer were a major factor in increasing computer …

The Effects Of Prisms Learning Cycle Strategies On Achievement, Integrated Process Skills, And Attitudes Towards Physics Of High School Physics Students When Referenced To Kolb’S Learning Style Inventory, Michael P. Kelly

Dissertations and Theses @ UNI

This study asked the question: Is the gain in physics achievement, process skills, and attitudes toward physics, using the PRISMS teaching strategy, different among high school physics students in the four cognitive learning modes identified by the Kolb Learning Styles Inventory (LSI)? In this study a group of high school physics students were tested for gains in scores in the three areas mentioned in the statement of the problem. This treatment group was taught using PRISMS teaching strategies. Their learning styles were classified according to the Kolb LSI. The procedure followed for this study included administration of the Kolb LSI …

Undergraduate Elementary Education Students’ Understanding Of The Particulate Nature Of Matter, Pushpa Pandey

Dissertations and Theses @ UNI

This study was descriptive in nature and investigated preservice elementary teachers' understanding of the particulate nature of matter. Twenty-two sophomore elementary education majors were interviewed using the interview-about-events technique. Students were asked to observe and offer explanations for some common physical and chemical changes such as melting, evaporating, condensing, dissolving, and burning. Next, the students' model of matter was probed and they were asked to provide a description of each event using their conceptual model. The results indicated that the majority of students (82%) accepted that matter is made of particles. However, only 56% of these students believed that particles …

Comparison Of Body Fat Percentages Of Lean Athletes, Lean Non-Athletic Students, And Body Builders As Determined By Bioelectrical Impedance And Hydrostatic Weighing, Troy E. Becker

Dissertations and Theses @ UNI

The purpose of this study was to compare bioelectrical impedance with hydrostatic weighing in lean subjects with varying amounts of fat-free mass and activity levels. The percentage of body fat of each subject was measured by anthropometry; bioelectrical impedance, using two different equations; and hydrostatic weighing (HW) methods. The two equations used for bioelectrical impedance were versions 1.51 (BIA2) and the weight management program (BIA3) from RJL Systems, Inc. HW was used as the criterion measure. The three groups were body builders, non-athletes, and athletes, with 10 subjects in each group. The mean value for age was 20.4 ± 1.8 …

Fall Commencement [Program], December 16, 1989, University Of Northern Iowa

UNI Commencement Programs

The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.

University Of Northern Iowa Faculty Senate Meeting Minutes, December 11, 1989, University Of Northern Iowa. Faculty Senate.

Documents - Faculty Senate

Meeting minutes from the Faculty Senate of the University of Northern Iowa.

Uni Schedule Of Classes, Fall 1989, University Of Northern Iowa

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the University of Northern Iowa.