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University of Northern Iowa

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Articles 3601 - 3630 of 4351

Full-Text Articles in Social and Behavioral Sciences

Geology Of Iowa Fens, C. A. Thompson, E. A. Bettis Iii, R. G. Baker Jan 1992

Geology Of Iowa Fens, C. A. Thompson, E. A. Bettis Iii, R. G. Baker

Journal of the Iowa Academy of Science: JIAS

Fens are peatlands which are dependent on groundwater discharge to provide nutrient enrichment. Fens are found in a variety of landscape positions and in most Iowa landform regions. This paper presents a classification system for Iowa fens based on landscape position, stratigraphy, and hydrologic factors. Iowa fens can be separated into six categories: 1) fens along valley wall slopes; the groundwater source for these fens is sand and gravel buried between glacial tills (inter-till); 2) fens in hummocky topography on the northwestern margin of the Des Moines Lobe landform region; the water source is sand and gravel buried within glacial …


The University Of Iowa Museum Of Natural History: An Historical Perspective, George D. Shrimper Jan 1992

The University Of Iowa Museum Of Natural History: An Historical Perspective, George D. Shrimper

Journal of the Iowa Academy of Science: JIAS

The 132-year record of UIMNH essentially mirrors historical and on-going trends in related institutions. As scholarship grew in the natural sciences during the 19th century, natural history museums became centers for scientific research. A "Golden Age" of museum-based expeditionary work and taxonomic research was marked at UI by the careers of curator/naturalists Calvin, Nutting, Macbride, and Shimek. Systematic biology and paleontology thrived with the accumulation of extensive collections. De-emphasis of "natural history" studies followed after 1920-30 with a concomitant growth in cellular and molecular biology. In seeking new directions and financial support, many museums, including UIMNH, shifted emphasis to public …


Editorial Board & Iowa Academy Of Science Officers And Directors Jan 1992

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Cover - Table Of Contents Jan 1992

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Checklist Of The Vascular Flora Of Page County, Iowa, Barbara L. Wilson Jan 1992

Checklist Of The Vascular Flora Of Page County, Iowa, Barbara L. Wilson

Journal of the Iowa Academy of Science: JIAS

The vascular flora of Page County, Iowa, was studied from 1987 through 1991. Seven hundred forty two species and four hybrids of vascular plants were found. A quarter of the flora consists of non-native species. Taxa not previously reported in Iowa include: Amsinckia intermedia, Brassica kaber, Cardaria chalapensis, Callirhoe bushii, Carex mesochorea, Eleocharis xyridiformis, Euphorbia prostrata, Lactuca saligna, Leontodon autumnalis, Scirpus mucronatus, Sclerochloa dura, and Vernonia arkansana.


Cover - Table Of Contents Jan 1992

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Necklace Radio Transmitter Attachment For Pheasants, Terry Z. Riley, Bruce A. Fistler Jan 1992

Necklace Radio Transmitter Attachment For Pheasants, Terry Z. Riley, Bruce A. Fistler

Journal of the Iowa Academy of Science: JIAS

We tested a pre-assembled, necklace-radio-transmitter-attachment design on female ring-necked pheasants (Phasianus colchicus) in northern Iowa. Birds were captured by nightlighting and bait trapping between September 1989 and March 1990. Radio transmitters were attached to 128 using a wire necklace. Two birds had problems adapting to the necklace, and 3 birds removed them. Twenty-three birds were still alive and wearing necklaces at the end of the study, for an average of 318 (SD= ± 52) days. Ease of attachment, long durability, light weight, and minimal bulk make the necklace an effective alternative to harness and poncho mounts.


Book Review: Landforms Of Iowa, Michael L. Thompson Jan 1992

Book Review: Landforms Of Iowa, Michael L. Thompson

Journal of the Iowa Academy of Science: JIAS

Many of us are interested in the landscape around us. We ask: Why is this hill so steep or why is that valley so wide? Why does my garden's soil have so much clay? Why does Iowa have no mountains' Landforms of Iowa should capture a broad audience of teachers, students, agriculturalists of all sorts, historians, homemakers, naturalists, botanists, biologists, foresters, geographers, civil engineers, as well as geologists and pedologists-in short, just about any Iowan who has ever wondered how and when the landscape at his or her doorstep or outside the car window was fashioned. Its stated purposes are …


Annual Report Of The Iowa Academy Of Science, 1991-92, Paul E. Rider Jan 1992

Annual Report Of The Iowa Academy Of Science, 1991-92, Paul E. Rider

Journal of the Iowa Academy of Science: JIAS

Starting in 1976, annual reports have served as a continuing record of the activities of the Iowa Academy of Science. These augment a 100 year history of the Academy which was written in the centennial year of 1975.

This report covers the period from July 1, 1991 to June 30, 1992. It is based on the official records of the Academy (committee reports, Board minutes, correspondence) as well as the recollections, impressions and thoughts of the author.


Analysis And Recommendations, Robert F. Long Jan 1992

Analysis And Recommendations, Robert F. Long

National Youth Leadership Symposium Monographs

The Institute for Youth Leaders' 1992 National Youth Leadership Symposium contributed to the emerging youth development profession and attending academic discipline through a formal examination of the principles of moving " theory into practice." This theme was selected as the next step in a logical sequence of symposia themes. In 1990 the gathering established agreement on the critical competencies needed in youth development professional practice. The 1991 experience built on the set of competencies with the identification of common ground for professional development among the organizations serving the needs of youth. With agreement on the needed competencies and the common …


Back Cover Jan 1992

Back Cover

National Youth Leadership Symposium Monographs

No abstract provided.


Front Matter Jan 1992

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Fifty Years Of Fisheries Management M An Obstinate Prairie Lake, Dennis L. Scarnecchia, James R. Wahl Jan 1992

Fifty Years Of Fisheries Management M An Obstinate Prairie Lake, Dennis L. Scarnecchia, James R. Wahl

Journal of the Iowa Academy of Science: JIAS

Little Wall Lake, a shallow 104 ha glacial lake in Hamilton County, Iowa, has been manipulated for about 50 years by fishery managers in an attempt to provide a stable sport fishery. Managers have used dredging, water level manipulation, aquatic vegetation control, mechanical fish removal and fish eradication with toxicants, sport fish stocking, introduction of piscivorous fish, artificial habitat structures, and winter aeration. Attempts to stabilize the fishery have been unsuccessful, and because of overpopulation and stunting of panfishes, total fish eradications were conducted in 1977 and 1989. We review the history of management efforts on the lake, and suggest …


Diatoms Of Northeastern Iowa Fens, Stephen P. Main, David E. Busch Jan 1992

Diatoms Of Northeastern Iowa Fens, Stephen P. Main, David E. Busch

Journal of the Iowa Academy of Science: JIAS

Analysis of water samples from 10 fens in NE Iowa, collected 13-14 November 1987, revealed a gradient from acid, low conductivity water conditions (pH 5.6, alkalinity 30 mg/I HCO, conductivity 65 μmho, total hardness 30 mg/I Ca) to circumneutral, moderately conductive conditions (pH 7 .2, alkalinity 390 mg/I, conductivity 705 μmho, total hardness 380 mg/I Ca). Three sites along this gradient were sampled 15 May 1988 and 3 September 1988 to evaluate seasonal variation in water conditions. Examination of composite diatom samples collected concurrently with the water samples yielded 150 taxa, of which 14 are new Iowa distributional records and …


Editorial Board & Iowa Academy Of Science Officers And Directors Jan 1992

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Back Cover Jan 1992

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Editorial Board & Iowa Academy Of Science Officers And Directors Jan 1992

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Back Cover Jan 1992

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Cover - Table Of Contents Jan 1992

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Front Matter Jan 1992

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


History Of Iowa Natural History - A Symposium, Neil P. Bernstein Jan 1992

History Of Iowa Natural History - A Symposium, Neil P. Bernstein

Journal of the Iowa Academy of Science: JIAS

This issue of the Journal of the Iowa Academy of Science presents the first written installment of our symposium: papers on the contributions of Keyes, Pammel, Bessey, and Hayden; the role of the Iowa Natural History Museum; and histories of both the development of early natural history studies and mammalogy investigations. More papers will follow in future issues, and new contributors are welcome.


Natural History In Iowa: The Early Phases, David C. Glenn-Lewin, Thomas R. Rosburg Jan 1992

Natural History In Iowa: The Early Phases, David C. Glenn-Lewin, Thomas R. Rosburg

Journal of the Iowa Academy of Science: JIAS

Natural history in Iowa prior to the 20th Century can be conveniently arranged into 4 phases: Native American, before the Louisiana Purchase, between the Louisiana Purchase and about 1850, and after 1850. Native American natural history was extensive and had a distinctly spiritual character. Natural history was a component of European exploration up to the time of the Louisiana Purchase, but was not treated as a separate endeavor; the evidence from this period comes from the journals and diaries of early exploreres, fur traders and the like. Between the Louisiana Purchase and about 1850, natural history changed from its status …


History Of Mammal Study In Iowa, John B. Bowles Jan 1992

History Of Mammal Study In Iowa, John B. Bowles

Journal of the Iowa Academy of Science: JIAS

The first records of mammals in Iowa were from explorers, survey parties heading westward and early seeders. Generation of checklists of state mammals began in 1840 and culminated with the annotated list by Scott (1937) and biogeographic analysis by Bowles (1975). Recent focus has been on rare species status and mammalian ecology, e.g., Loess Hills, riparian habitat, agricultural practices, and reestablished grasslands.


Three Botanists: Bessey, Pammel, And Hayden, Duane Isely, Lois Tiffany Jan 1992

Three Botanists: Bessey, Pammel, And Hayden, Duane Isely, Lois Tiffany

Journal of the Iowa Academy of Science: JIAS

Bessey was a multidirectioned innovator and evangelist of botanical education, conservation, and scientific agriculture. For example, he initiated the first undergraduate laboratory using microscopes for botany instruciton and he had no peer as a botany teacher in the latter part of the 19th century. His enthusiasm about the natural history of Iowa and surrounding states broadened the horizons of innumerable students and he was one of the founders of the Iowa Academy of Science. An organization man, Bessey quickly became president of any group with which he became affiliated, and eventually was both nationally and internationally known through his text …


Algeria's Fundamentalists: Their Historical Context And Prospects For Success, Michael L. Smith Jan 1992

Algeria's Fundamentalists: Their Historical Context And Prospects For Success, Michael L. Smith

Presidential Scholars Theses (1990 – 2006)

Islamic fundamentalism, also known as Islamicism or Islamic revivalism, is a move ment that has become much more visible in the last two decades. Fundamentalist groups have been growing in membership in many Middle Eastern nations, but the Islamic revivalist movement was most prominent in the 1979 Islamic Revolution in Iran, in which radical Shi'ites seizea power from the Shah and his monarchy. A decade later, as that Islamic regime maintains power, many Islamic fundamentalist groups and parties have proliferated throughout the Muslim world. Although they do not hold power in any other country, in many nations Islamic fundamentalists are …


Free Speech: The Debate Over The Current Scope Of Protection Provided Under The First Amendment, Susan E. Hanna Jan 1992

Free Speech: The Debate Over The Current Scope Of Protection Provided Under The First Amendment, Susan E. Hanna

Presidential Scholars Theses (1990 – 2006)

The First Amendment guarantees that "Congress shall make no law ... abridging the freedom of speech .... " The founding fathers clearly recognized the importance of freedom of speech to a democracy, and thus provided for its complete protection. A democracy, however, requires both liberty and order if it is to be effective. The problem, then, is balancing the needs of freedom and civil order in a manner that least restricts liberty, yet still maintains the order that is crucial to the life of a democracy.

The on-going debate over the scope of protection provided under the First Amendment reflects …


The Specific Surface Area Values For Iowa Tills, Keith E. Schilling, Brian L. Gedlinske Jan 1992

The Specific Surface Area Values For Iowa Tills, Keith E. Schilling, Brian L. Gedlinske

Journal of the Iowa Academy of Science: JIAS

Specific surface area is a property used by earth scientists to estimate the proportion of expandable clay minerals in soils. In this study, specific surface area method is shown to compare favorably with standard clay mineralogical techniques in determining gross differences in expandable clay mineral content in tills. The results of over 100 measurements on till samples from Iowa indicate undifferentiated pre-Illinoian tills from southern and southwestern Iowa have the highest specific surface area values of Iowa tills (ranging from nearly 100 to greater than 150 m2/g) and Wisconsinan Dows Formation tills have the lowest average specific surface …


Mass Dependent Loss Of Resolution In Radially Inhomogeneous Exb Ion Traps, Mark A. Capron, Susan S. Haskin, Curtiss D. Hanson Jan 1992

Mass Dependent Loss Of Resolution In Radially Inhomogeneous Exb Ion Traps, Mark A. Capron, Susan S. Haskin, Curtiss D. Hanson

Journal of the Iowa Academy of Science: JIAS

ExB ion traps, such as Fourier transform Ion Cyclotron Resonance mass spectrometers (FY:ICR), mass analyze sample ions based on differences in their cyclotron frequencies in a homogeneous magnetic field. The high resolution mass measurements of FT-ICR are based on the relationship between the frequency of the cyclotron orbit and the mass-to-charge (m/q) ratio of an ion. Both the orbit and the frequency/mass relationship result from the radial forces on the ion. Ions trapped by inhomogeneous electric fields experience different magnitudes of the radial electric fields at different positions resulting in a positionally dependent frequency. Such differences in orbital frequencies for …


The Standardization Of The Symptom Checklist-90 (Scl-90) For An Occupational Health Population, Laura Lynn Diemer Jan 1992

The Standardization Of The Symptom Checklist-90 (Scl-90) For An Occupational Health Population, Laura Lynn Diemer

Dissertations and Theses @ UNI

The cost of work-related musculoskeletal injuries to industry and to society as a whole is discussed. Literature concerning the means by which psychological variables interact and have an affect on rehabilitation from such injuries is also reviewed. Research supporting the necessity for gauging the presence of such psychological variables and the need for a multidisciplinary treatment modality to assist in a successful treatment outcome is presented. The current research: 1. Developed norms for an occupational health population based on length of time since the original complaint of injury (Less than l month, 1-3 months, 3-6 months and more than 6 …


Industrial Technology Faculty's Valuation Of Consulting And Professional Performance, Daniel Richard Meyer Jan 1992

Industrial Technology Faculty's Valuation Of Consulting And Professional Performance, Daniel Richard Meyer

Dissertations and Theses @ UNI

The purpose of this study was to investigate university industrial technology faculty relationships between their consulting with industrial and perceptions of professional performance. The question addressed was that if effects on teaching ability, research activity, scholarly publishing, and public service arising from this activity. The information obtained adds to knowledge and may be useful for administrators in supporting this form of public service. The result should be increased faculty competence, better prepared students, and increased industrial competitiveness.

Exogenous variables of consulting with industry, competency maintenance, theory testing, enthusiasm regeneration, research opportunity, and scholarly publishing were identified as having potential impact …