Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Education (15477)
- Arts and Humanities (6838)
- Higher Education (5891)
- Social and Behavioral Sciences (4361)
- Science and Mathematics Education (4046)
-
- Creative Writing (2244)
- Music (2127)
- Music Performance (1848)
- Physical Sciences and Mathematics (1726)
- Life Sciences (1547)
- English Language and Literature (1367)
- Curriculum and Instruction (1034)
- Educational Leadership (902)
- Medicine and Health Sciences (797)
- Anthropology (769)
- Library and Information Science (687)
- Educational Administration and Supervision (531)
- Public Affairs, Public Policy and Public Administration (491)
- Sociology (457)
- Psychology (452)
- Art and Design (448)
- Communication (440)
- Health and Physical Education (418)
- Language and Literacy Education (408)
- Engineering (376)
- Literature in English, North America (354)
- History (346)
- Geography (331)
- Poetry (325)
- Fiction (321)
- Keyword
-
- Concert program--Iowa--Cedar Falls; (1732)
- University of Northern Iowa. Faculty Senate; University of Northern Iowa--Faculty; (1280)
- Graduate Council (400)
- University of Northern Iowa; University of Northern Iowa Graduate College; (400)
- School--Iowa--Cedar Falls; (395)
-
- Iowa (301)
- School administrators--Attitudes; Teacher-administrator relationships; Student-administrator relationships; (242)
- Postville (216)
- University of Northern Iowa. International Students and Scholars Office--Periodicals; University of Northern Iowa--Foreign students--Periodicals; (214)
- German American newspapers--Iowa--Waverly; Newspapers--Iowa--Waverly; (174)
- University of Northern Iowa--Curricula; Schedules (174)
- American--Iowa--Cedar Falls; University of Northern Iowa; (164)
- University of Northern Iowa. Library--Periodicals; University of Northern Iowa--Students--Services for--Periodicals; College students--Services for--Iowa--Cedar Falls--Periodicals; (156)
- Commencement ceremonies--Iowa--Cedar Falls; University of Northern Iowa--Periodicals; (153)
- University of Northern Iowa--Periodicals; (152)
- Postville Immigration Raid (150)
- Iowa Waste Reduction Center--Periodicals; Waste minimization--Iowa--Periodicals; (141)
- Malcolm Price Laboratory School--Periodicals; (136)
- Iowa State Teachers College--Curricula; University of Northern Iowa--Curricula; Schedules (131)
- Iowa State Teachers College--Periodicals; University of Northern Iowa--Periodicals; (126)
- Commencement ceremonies--Iowa--Cedar Falls; Iowa State Teachers College--Periodicals; University of Northern Iowa--Periodicals; (122)
- University of Northern Iowa Secondary Teacher Education Senate; (121)
- UNI ScholarWorks--Statistics--Periodicals; (119)
- University of Northern Iowa Elementary Teacher Education Senate; (114)
- University of Northern Iowa. Office of International Engagement--Periodicals; University of Northern Iowa--Foreign students--Periodicals; (104)
- College verse (103)
- University of Northern Iowa. Faculty Senate; University of Northern Iowa--Faculty; (96)
- Geography--Study and teaching (Secondary); (88)
- University of Northern Iowa. Graduate College--Curricula; University of Northern Iowa--Graduate work; (84)
- Underground periodicals; (82)
- Publication Year
- Publication
-
- Proceedings of the Iowa Academy of Science (6507)
- Graduate Research Papers (4474)
- Dissertations and Theses @ UNI (2740)
- Iowa Science Teachers Journal (2308)
- Purple Pen (1874)
-
- Music Recital Programs (1759)
- Documents - Faculty Senate (1384)
- Iowa Journal of Communication (891)
- Honors Program Theses (859)
- Short Story (722)
- Journal of the Iowa Academy of Science: JIAS (702)
- Institute for Educational Leadership Monograph Series (566)
- Athletics Media Guides (471)
- Faculty Publications (415)
- Documents - Graduate Council (400)
- UNI Schedule of Classes (384)
- Postville Project Documents (363)
- Open Educational Resources (354)
- Midwest: A Literary Review (339)
- UNI Commencement Programs (326)
- Science Bulletin (319)
- Institutional Effectiveness & Planning Documents (309)
- The Alumnus (225)
- UNIversitas: Journal of Research, Scholarship, and Creative Activity (224)
- ISSO Weekly Newsletter (214)
- Iowa Academy of Science Documents (199)
- Draftings In (189)
- UNI Response to COVID-19 (179)
- Library Documents & Reports (entire collection) (175)
- Waverly Phoenix (174)
- Publication Type
- File Type
Articles 28441 - 28470 of 35977
Full-Text Articles in Entire DC Network
Confessions Of A College Freshman, John Cazanas
Confessions Of A College Freshman, John Cazanas
iowa state teachers college magazine
No abstract provided.
Snakes And Statistics, Bret Hart
Snakes And Statistics, Bret Hart
iowa state teachers college magazine
No abstract provided.
Weakened Matmen Meet Purdue
iowa state teachers college magazine
No abstract provided.
[Cartoon: The Coach Figures]
iowa state teachers college magazine
No abstract provided.
A Controlled Waterfowl Hunting Area Experiment, Lester F. Faber
A Controlled Waterfowl Hunting Area Experiment, Lester F. Faber
Proceedings of the Iowa Academy of Science
The demand by Iowa hunters for places to hunt ducks has been on the increase for several years. Since 1943, which is a relatively short time ago, the number of duck stamps sold in Iowa has increased 30 per cent. We have been unable to provide these hunters sufficient space to hunt waterfowl. Although several thousand acres of marsh have been acquired and developed the last ten years to add to the many acres already state-owned, the demand for space is not satisfied.
The Effect Of Initial Massing Of Practice On The Transfer Task In A Proactive Interference Situation, Abram M. Barch
The Effect Of Initial Massing Of Practice On The Transfer Task In A Proactive Interference Situation, Abram M. Barch
Proceedings of the Iowa Academy of Science
Virtually all motor learning studies have shown spaced practice to be superior to massed practice. Most of the apparent exceptions, such as the work of Cook, involve tasks in which symbolic responses play a dominant role - such tasks as spider mazes, punch board mazes, mechanical puzzles, etc. (1, 2). The few remaining exceptions are studies in which the term "spaced practice" is a misnomer. That is, the performance of the so-called "spaced" groups was affected as much by the inhibitory effects of work decrement as was the performance of the massed practice groups (3).
Striations In Stationary Electric Waves, Kathryn Jantzen
Striations In Stationary Electric Waves, Kathryn Jantzen
Proceedings of the Iowa Academy of Science
The measurement of wave lengths of standing electrical waves in Lecher wires is a standard method of determining the frequency of high frequency oscillators. A common method of discovering the positions of the nodes is by shorting the wires with a small bulb, such as a flashlight bulb. However, we have found another way to determine the positions of the nodes and an interesting phenomenon which occurs in connection with this method. This, as far as we know, has never been reported before.
Pathological Functions, H. P. Thielman
Pathological Functions, H. P. Thielman
Proceedings of the Iowa Academy of Science
The object of this paper is to give some examples of functions which are peculiar with respect to continuity and neighborliness, and also to show that there exist point properties (of functions) with respect to which no function can be peculiar. One such point property, namely that of cliquishness of a junction as defined here is a natural generalization of continuity and neighborliness, but yields results which are quite different from those which hold for continuous or neighborly functions. This property of cliquishness reduces to the property of neighborly' as defined by Bledsoe3 for the case when the domain of …
Conjugate Points Of Singular Quadratic Functionals For N Dependent Variables, John O. Chellevold
Conjugate Points Of Singular Quadratic Functionals For N Dependent Variables, John O. Chellevold
Proceedings of the Iowa Academy of Science
Morse and Leighton (Singular quadratic functionals. Transactions of the American Mathematical Society, volume 40 (1936) pp. 252-286) gave a systematic approach to the problem of minimizing a singular quadratic functional for one dependent variable considering integrands of the type f (x, y, y') = r(x) y'2 + 2q (x) y y' + p (x) y2 where r, q, and p are single-valued continuous functions of the real variable x on the interval (0, d)(2) and r is positive. They defined first conjugate point of the singular point x = 0. They defined minimum limit of a functional …
An Aftonian Plant Locality In Lee County, Iowa, L. R. Wilson
An Aftonian Plant Locality In Lee County, Iowa, L. R. Wilson
Proceedings of the Iowa Academy of Science
Organic remains in glacial drifts and interglacial deposits are relatively abundant in Iowa and serve as valuable aids for the resolution of certain Pleistocene problems. The existence of fossils in the glacial deposits was early recognized and became one of the criteria for the separation of drift sheets (McGee, 1878). In 1895 T. C. Chamberlain noted the presence of peat separating two tills in the Afton Junction-Thayer region of Union County, Iowa. The name Aftonian was applied in connection with these interglacial deposits and has become the established designation of the oldest recognized interglacial stage in North America.
Behavior Associated With Age And Audiogenic Seizures In An Inbred Strain Of Mice, Wayne C. Bruce
Behavior Associated With Age And Audiogenic Seizures In An Inbred Strain Of Mice, Wayne C. Bruce
Proceedings of the Iowa Academy of Science
Behavior disorders or so-called "experimental neuroses" have been observed by many investigators in a variety of species. Finger1 indicates that convulsive behavior has been studied experimentally in such mammals as the cat, dog, mouse, rabbit and pig. Hall and Martin2 refer to behavior disorders in the chimpanzee and rat. So far as is known only rats and mice have been found susceptible to audiogenic seizures. It has been found that abnormal behavior may be elicited by a variety of stimuli such as conflict, sound, electric shock, drugs, and ·dietary deficiency. Although the literature appears to indicate that a …
A Composite Driving Inventory [Abstract], A. R. Lauer
A Composite Driving Inventory [Abstract], A. R. Lauer
Proceedings of the Iowa Academy of Science
Previous studies have shown a number of factors to be moderately correlated with accident records and other criterion of driving performance. Among these are knowledge of driving, attitudes towards traffic, experience and certain personality characteristics. It is hypothesized that a composite of these categories using selected items should raise the predictive value of such an instrument. Consequently a type of inventory has been assembled from several selected categories of known reliability and validity into a composite form of 163 items covering certain aspects of personal history, experience, preferences and attitudes. Methods of scoring will he presented along with certain preliminary …
Personality Changes In College Women During Four Years Of College Experience, Alice L. Palubinskas
Personality Changes In College Women During Four Years Of College Experience, Alice L. Palubinskas
Proceedings of the Iowa Academy of Science
Changes in the personality test scores of a group of college women over an interval of approximately four years were investigated. During the fall quarter of 1947 three hundred forty-four freshmen women in the Home Economics Division of Iowa State College were given Darley and McNamara's Minnesota Personality Scale. During the winter of 1951 ninety-one of these women were retested with the same personality scale. The retested group included students who were still enrolled at Iowa State College and who submitted to the retesting.
"Verbal Factor" And "Number Factor"A Study Of Two Tests, John E. Williams, C. D'A. Gerken
"Verbal Factor" And "Number Factor"A Study Of Two Tests, John E. Williams, C. D'A. Gerken
Proceedings of the Iowa Academy of Science
The psychologist working as a counselor in a student personnel office has come to depend upon psvchometric data to sharpen the reliability and validity of his judgments. Although he is cautious about trusting test labels, and well aware of the unwritten caveat accompanying each test manual, every once in a while the counselor may be brought up short by the summation effect of discrepancies he notices in day-to-day work with test data. The present study had its origin in just this fashion. It grew out of attempts of counselors to extract the maximum amount of meaningful information from test data.
A Simpler Quantitative Method For The Determination Of Potassium In Tissues, Joab Klapp Aronson
A Simpler Quantitative Method For The Determination Of Potassium In Tissues, Joab Klapp Aronson
Proceedings of the Iowa Academy of Science
For some time past this writer has been interested in the potassium content of muscle. When this interest was first aroused he became aware of the need for a satisfactory method for determining quantitatively the amounts of potassium in a given muscle. So there ensued a search of the literature. This yielded three fundamental methods, each of which had its advantages and disadvantages. The Perchlorate and the Chloroplatinate methods were not used because of the technical difficulties presented by them. Jacobs and Hoffman (1931) had used the Cobaltinitrite methods with muscle and had obtained good results. So their method was …
Performance On A Motor Task Under Differential Amounts Of Physical Induced Tension, Howard H. Mcfann
Performance On A Motor Task Under Differential Amounts Of Physical Induced Tension, Howard H. Mcfann
Proceedings of the Iowa Academy of Science
The present study was concerned with the influence of different amounts of experimentally induced muscular tension on performance of a motor task. Following the pioneer investigations by Bills (1), a number of studies utilizing tasks under various techniques of inducing tension have attempted to test his general conclusion that tension facilitates performance. McGeoch (9) and Courts (5) present excellent summaries of the studies concerned and, in general, the evidence cited agrees with Stauffacher (11) who on the basis of his own work and early studies, stated the hypothesis that there is an amount of tension which is optimal for learning …
Certain Factors Found To Improve Mail Survey Returns, Donald A. Hoppe
Certain Factors Found To Improve Mail Survey Returns, Donald A. Hoppe
Proceedings of the Iowa Academy of Science
During the past two years the Driving Research Laboratory at Iowa State College has been using return postcards to obtain data on certain aspects of driving and driver's habits. Since the return of the postcards has a definite effect on the value of the survey an effort has been made to determine how the percentage returned may be increased. The first use of the postcard described here was in connection with a traffic survey. The problem was to determine the hourly use of the roads by age and sex. The procedure set up has been for an observer to estimate …
X-Ray Diffraction Studies Of Leather, S. D. Bailey, V. F. Albert
X-Ray Diffraction Studies Of Leather, S. D. Bailey, V. F. Albert
Proceedings of the Iowa Academy of Science
In the course of an investigation of methods suitable for the determination of the extent and causes of the deterioration of leather, the x-ray diffraction patterns of a number of new and deteriorated samples of leather were made. In the comparison of these diffraction patterns to those reported in the literature (1), we were impressed by the fact that none of the literature diffraction patterns show the reflections due to the additives. A probable explanation of this is that x-ray studies in the past have been made with the primary purpose of determining the effect of tanning agents on the …
The Effects Of A Thirty Year Age Increment Upon Individual And Trait Differences In Intelligence, W. A. Owens, Richard R. Clampitt
The Effects Of A Thirty Year Age Increment Upon Individual And Trait Differences In Intelligence, W. A. Owens, Richard R. Clampitt
Proceedings of the Iowa Academy of Science
As implied, the problem of the present investigation was to estimate the effects of a thirty-year age increment upon individual and trait differences in eight measurable mental functions.
Some Preliminary Observations On The Roosting Of Bronzed Grackles And Their Avian Associates At Ames, Iowa, John C. W. Bliese, George O. Hendrickson
Some Preliminary Observations On The Roosting Of Bronzed Grackles And Their Avian Associates At Ames, Iowa, John C. W. Bliese, George O. Hendrickson
Proceedings of the Iowa Academy of Science
Ames, Iowa is one of those midwestern cities which seem to be favored by several species of birds as their choice of night roosting sites. During the summer and fall months numerous bronzed grackles, starlings, cowbirds, and robins daily come, near sundown, to residential portions of Ames to spend the night in the shade trees, and leave for the surrounding countryside again early next morning.
Hemagglutination Reactions Involving Plasmas And Erythrocytes Of Individual Chickens And Ducks, Elery R. Becker
Hemagglutination Reactions Involving Plasmas And Erythrocytes Of Individual Chickens And Ducks, Elery R. Becker
Proceedings of the Iowa Academy of Science
The writer (Becker, 1952) has recently reported on the varied responses among both chicks and ducklings to blood-induced infection with Plasmodium lophurae. The present paper is concerned with hemagglutination reactions involving the plasmas of individual chickens and duck erythrocytes, on the one hand, and the plasmas of individual ducks and chicken erythrocytes, on the other. The agglutinations observed were the result of exposing the erythrocytes to diluted plasmas containing natural or innate agglutinins; i.e., agglutinins not formed as the result of active immunization through exposure to the antigens of the erythrocytes.
Number Of Responses And Rate Of Responding To A Voluntary Rest Pause As A Function Of Response Effortfulness, Robert F. Boldt, Douglas S. Ellis
Number Of Responses And Rate Of Responding To A Voluntary Rest Pause As A Function Of Response Effortfulness, Robert F. Boldt, Douglas S. Ellis
Proceedings of the Iowa Academy of Science
Recent studies by Eckstrand (1) and Ellis, Montgomery, and Underwood (2) have been concerned with the effects of effortfulness on performance and reminiscence. Eckstrand varied the amount of spring tension against which the stylus had to be depressed in the pursuit rotor task, while Ellis, Montgomery, and Underwood varied the work-surface height of a block-turning task. In both studies, the effortful manipulation failed to depress performance.
An Annotated Check-List Of Fishes Of The Wapsipinicon River Drainage System In Iowa, Robert E. Cleary
An Annotated Check-List Of Fishes Of The Wapsipinicon River Drainage System In Iowa, Robert E. Cleary
Proceedings of the Iowa Academy of Science
The Wapsipinicon rises in the southeast corner of Mower County, Minnesota, at an elevation of 1250 feet above mean sea level and flows 255 miles in a southeasterly direction to enter the Mississippi River some five miles above Princeton, Iowa. In its course across northeast Iowa it falls approximately 685 feet, maintaining a rather gradual slope, the average seldom, if ever, exceeding 2.5 feet per mile. The major portion of the Wapsie basin lies within the area of the Iowan drift, and the topography for the major portion is a constructional type of the youthful stage. The Wapsie Valley is …
Productivity Of The Cottontail Rabbit In Decatur County, Iowa, 1951, Fred H. Hubbard
Productivity Of The Cottontail Rabbit In Decatur County, Iowa, 1951, Fred H. Hubbard
Proceedings of the Iowa Academy of Science
Field research to obtain information on the productivity of the cottontail rabbit (Sylvilagus floridanus mearnsii Allen) in Decatur County, Iowa, was conducted from March 27 to September 19, 1951. The 75-acre study area on a farm owned by Floyd Fleming is in Section 13 of Woodland Township, eight miles northwest of Lineville, Iowa.
Occurence Of Echinoparyphium Recurvatum (Linstow, 1873) In Chickens In Iowa, Kathel B. Kerr
Occurence Of Echinoparyphium Recurvatum (Linstow, 1873) In Chickens In Iowa, Kathel B. Kerr
Proceedings of the Iowa Academy of Science
During August, 1951, two White Leghorn chickens about three months old were brought to the Diagnosis Department of Dr. Salsbury's Laboratories because the birds were droopy and not developing properly. The death loss in the flock had been about five percent. At necropsy these birds showed enlarged spleens, congested livers and pale kidneys. A catarrhal enteritis was found in the jejunum and associated with this were numerous flukes. Unfortunately none of these were saved for identification. The flock-owner was instructed to move the birds away from the area in which they had been maintained and to treat the birds with …
A Trapping Experiment To Estimate The Bluegill Population In A Farm Pond, John M. Lawrence
A Trapping Experiment To Estimate The Bluegill Population In A Farm Pond, John M. Lawrence
Proceedings of the Iowa Academy of Science
Estimates of fish populations from recapture of marked fish have, on several occasions, yielded estimates far below the population later shown to be present (Krumholz 1944, Carlander and Lewis 1948, Fredin 1950, Carlander 1952). Fredin (1950) suggested that the recapture of the fish by some method different from that used in the original capture might give less biased results. In the present investigation the bluegill population was estimated by the marking and recovery technique using seines and baited wire traps.
The Myxosporidian Fauna Of Some Fresh Water And Marine Fishes, Paul A. Meglitsch
The Myxosporidian Fauna Of Some Fresh Water And Marine Fishes, Paul A. Meglitsch
Proceedings of the Iowa Academy of Science
Myxosporidia are highly successful sporozoan parasites of fishes. Although a few species have been described from other cold-blooded vertebrates, fishes are the characteristic hosts and harbor over 90% of the known species. In all localities in which a survey has been undertaken the Myxosporidia have proved to be common. This is equally true of fresh water and marine habitats. Although each species inhabits a particular host organ, the group as a whole have been recovered from the lumina or the tissues of nearly every organ in the body cavity, as well as the muscular, skeletal and nervous tissues and the …
Banded Waterfowl Recovered In Iowa (1948-1951), James G. Sieh
Banded Waterfowl Recovered In Iowa (1948-1951), James G. Sieh
Proceedings of the Iowa Academy of Science
Waterfowl banded throughout continental North America have been recovered in Iowa. The U. S. Fish and Wildlife Service, via the Bird-Banding Office, Pautuxent, Maryland, has supplied the State Conservation Commission with 340 waterfowl recoveries reported from Iowa since 1948. These recoveries represented 256 mallards (Figure 1), 26 pintails, 15 blue-winged teal, and 11 black ducks. Ten other species of ducks were represented by only 25 recoveries. Six Canada geese and one coot complete the. list of waterfowl recoveries in this report.
An Annotated List Of The Lygaeidae Of Iowa And Illinois (Hemiptera: Heteroptera), James A. Slater
An Annotated List Of The Lygaeidae Of Iowa And Illinois (Hemiptera: Heteroptera), James A. Slater
Proceedings of the Iowa Academy of Science
In this paper an attempt has been made to present an adequate list of Lygaeidae found in Iowa and Illinois, and to indicate what is known of the intrastate distributions of the various species. This paper is limited to geographic considerations and, in this sense, assumes the character of a "local list"' as no biological or ecological considerations are discussed. It is felt that our knowledge of the Nearctic Lygaeidae has reached a degree of maturity where knowledge of state and lesser faunal areas is essential to encourage the badly needed bionomic work that should develop with a relatively stable …