Science and Mathematics Education Commons^™

Test 1680: John Deere 7400 Syncroplus Diesel 12-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE

General

Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure.

The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1682: Case International 7220 Diesel 18-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE

General

Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure.

The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1686: White 6195 Diesel 18-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE

General

Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure.

The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Nebraska Summary: S158 John Deere 6400, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S157 John Deere 6300, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S155 John Deere 6200, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S154 John Deere 6200, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary: S156 John Deere 6300, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Determining The Validity And Reliability Of An Instrument Designed To Measure Metacognitive Behaviours, Anne L. Martin

Theses : Honours

This project was designed to study the role of metacognition in mathematical problem solving. More specifically, it was designed to determine the validity and reliability of an instrument proposed to identify metacognitive behaviours in Year 7 children solving problems. The instrument was used to analyse audio tapes of pairs of students working on a non-routine problem (i.e., a problem that cannot be solved solely by the direct application of the basic operations). Analysis of the audio tapes involved categorizing metacognitive decisions as: orientation, organization, execution, and verification behaviours. A "cognitive-metacognitive" framework (Garofalo & Lester, 1985) was used as a basis …

Conceptual Representation Of The Newtonian Model Of Motion In University Physics Students, GiannēS ChatzēGeōRgiou

Dissertations and Theses @ UNI

The purpose of this study was to investigate how undergraduate students at the University of Northern Iowa who had taken prior coursework on non-calculus general physics with a unit on mechanics understand the Newtonian model of motion. In general, the study was concerned with reasoning strategies, the preconceptions that give rise to these strategies, and the schema that might be inferred from the preconceptions. In particular, the study focused on the three fundamental notions of the Newtonian model of motion: (a) that uniform straight line motion is equivalent to rest, (b) that motion is relative to an inertial frame of …

Conceptual Representation Of The Newtonian Model Of Motion In University Physics Students, Yannis Hadzigeorgiou

Dissertations and Theses @ UNI

The purpose of this study was to investigate how undergraduate students at the University of Northern Iowa who had taken prior coursework on non-calculus general physics with a unit on mechanics understand the Newtonian model of motion. In general, the study was concerned with reasoning strategies, the preconceptions that give rise to these strategies, and the schema that might be inferred from the preconceptions. In particular, the study focused on the three fundamental notions of the Newtonian model of motion: {a) that uniform straight line motion is equivalent to rest, {b) that motion is relative to an inertial frame of …

Openness Of Inquiry Of Laboratory Formats Currently Used In Lower Secondary Science, H. A. D. Bryce

Theses : Honours

Laboratory formats can range from 'recipe' type activities, in which students just verify concepts, to 'open' inquiry activities, in which students design and carry out their own experiments. There is much support in the literature for the use of 'open' inquiry formats. By way of a questionnaire secondary science teachers, sent to a sample of lower this study investigated the proportions of the different that are currently being used in laboratory formats lower secondary science in Perth schools. The study found that most of the formats used required students to follow set procedures to verify or determine a concept. Few …

Iowa Academy Of Science Directory, 1994-95, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Board of Directors ... 3
Program Directors ... 4
Editors ... 6
Committees ... 8
Sections ... 21
ISTS Regional Directors ... 36
Awards of Merit ... 28
Excellence in Science Teaching Awards ... 29
Past Presidents ... 30
Membership Roster ... 31

Attitudes Towards Mathematics Of Vietnamese And Non-Vietnamese Senior Secondary Female Students, Robert G. Palmer

Theses : Honours

Throughout Australia and indeed in many parts of the world, there is a growing realisation that girls tend not to achieve their full potential at school, especially with regard to higher level mathematics units. Many girls limit their post-school options by choosing not to continue with mathematics when it ceases to be compulsory in Years 11 and 12. They also choose less difficult mathematics units and participate at a level below their potential. Much of the research has focused on gender differences in attitudes towards mathematics, and on participation and achievement in mathematics, but not on ethnic differences. The purpose …

Challenging Student Alternative Frameworks Of Electrical Circuits, Lauril Jones

Theses : Honours

Student alternative frameworks were found by the researcher to be a problem when teaching the topic of electricity to Year 9 science students. It was recognised that the alternative frameworks had to be identified and a constructivist teaching strategy that would facilitate conceptual change within these students needed to be adopted. A pre-test-post-test, control group-treatment group study was conducted to evaluate the effectiveness of a constructivist approach to instruction. The treatment group in the study received instruction based on the 'four phase model for teaching for conceptual change', a constructivist approach to teaching suggested by Cosgrove and Osborne (1985) as …

The Identification Of Conceptual And Strategic Difficulties Encountered By Students When Using An Electronic Spreadsheet, Craig Clapham

Theses : Honours

The call for the use of computer technology in mathematics education has been heeded by the Ministry of Education in Western Australia. The syllabus documents for the Upper Secondary mathematics courses recommend the use of computer software packages for the teaching of the concepts involved in these courses. In particular, the electronic spreadsheet is suggested as a versatile and useful tool for simulations and problem-solving by students, although very little formal study has been undertaken to support or refute such beliefs. This study involved teaching a group of four Year 12 students to operate a spreadsheet, and then examined the …

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Ecoregions And Subregions Of Iowa: A Framework For Water Quality Assessment And Management, Glenn E. Griffith, James M. Omernik, Thomas F. Wilton, Suzanne M. Pierson

Journal of the Iowa Academy of Science: JIAS

Ecoregion frameworks are valuable tools for inventorying and assessing environmental resources, for setting resource management goals, and for developing biological criteria and water quality standards. In a collaborative project between the Iowa Department of Natural Resources (DNR) and the U.S. Environmental Protection Agency (EPA), we have refined boundaries of the EPA's five ecological regions of Iowa and defined six subregions of the Western Corn Belt Plains ecoregion within the state. Lists of candidate stream reference sites have been developed to date for the seven largest regions, and the sites were visited and evaluated by Iowa DNR and U.S. EPA personnel …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Post-Natal Survival Of Raccoons In Relation To Female Age And Denning Behavior, Jonathan J. Judson, William R. Clark, Ronald D. Andrews

Journal of the Iowa Academy of Science: JIAS

We measured post-natal survival of radio-collared raccoons 1-5 months old in southwest Iowa, 1988-1989. We compared survival of young nurtured by yearling and adult females and related den site selection to survival functions using proportional hazards models. Adult females used upland and farmstead habitats note frequently than yearlings, whereas yearling females used lowland habitats note frequently. Tree cavities and beds on the ground were used most frequently. Adult females denned in buildings 13% of the time and in holes in the ground 9.5% of the time, whereas yearlings frequently tested with litters in beds on the ground (31%). Microhab1tat characteristics …

Influence Of Reduced Leaching On Growth Of Seedlings Of Black Locust Inoculated With Rhizobia, William R. Graves, Sandra R. Anfinson

Journal of the Iowa Academy of Science: JIAS

Seedlings of black locust (Robinia pseudoacacia L.) were inoculated with compatible rhizobia and irrigated twice each week with solution containing either 50 or 150 mg nitrogen/L. Leaching fraction treatments of 0, 0.2, or 0.4 were maintained for 6 weeks. Seedlings supplied 50 mg nitrogen/L grew poorly compared co planes supplied 150 mg nitrogen/L regardless of leaching fraction. Dry masses of shoots and of entire planes were lower for seedlings in the 0 and 0.2 leaching fraction treatments compared with chose in the 0.4 treatment. Neither leaching fraction nor applied nitrogen concentration appeared co affect the number of nodules per plant, …

Water Quality Monitoring (1988 To 1991) At The Iowa Academy Of Science's Parish Farm, Grundy County, Iowa, Brenda K. Nations, George R. Hallberg

Journal of the Iowa Academy of Science: JIAS

In May 1988 sampling was initiated to evaluate water quality in relation to management practices at Parish Farm, which is owned by Iowa Academy of Science. Initial results showed tile-line effluent to have high concentrations of nitrate-nitrogen (N0₃-N). Twelve monitoring wells were installed over a one year period to analyze shallow groundwater at the farm. The wells, tile lines, and surface water were sampled monthly, through October, 1991, and the water analyzed for N0₃-N and some pesticides. N0₃-N concentrations varied, related to landuse and management of adjacent areas. Greater N0₃-N concentrations were …

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

A Qualitative Study Of The Perceptions Of The Physics Teaching Experiences Of Selected Iowa Teachers Who Have An Undergraduate Major In Biology, Jody Williams Bintz

Dissertations and Theses @ UNI

The purpose of this study was to explore the perceptions of the physics teaching experiences of selected Iowa physics teachers who have an undergraduate major in biology. Using a qualitative approach, 18 teachers who met the criteria of the study were interviewed in person or by telephone. The transcribed interviews served as the data which was analyzed inductively throughout the study. As the interview process continued, patterns emerged in the experiences of these teachers and in how these experiences affected their perceptions of teaching physics. While perceptions of the first physics teaching experience varied, all those interviewed reported feeling more …

Student Held Misconceptions Regarding Area And Perimeter Of Rectangles, Susan M. Carle

Critical and Creative Thinking Capstones Collection

Students enter the classroom with individual schemas, based on their experiences and ideas, which influence the reception, interpretation, and recollection of new information. Effective teachers must understand the implications of these existing schemas. As an experienced classroom teacher, the author finds students often manipulate and apply new information well in class, only to forget or alter the material a few weeks later;. When misconceptions are woven into schemas, they interfere with reception of information. This thesis examines specific student-held misconceptions about the area and perimeter of rectangles and the process of their identification and eradication. Identification of the misconception is …

Nebraska Earth Systems Education Network Newsletter – Fall 1993

Nebraska Earth Systems Education Network

Content:

Nebraska Association of Teachers of Science Annual Meeting

K-12 Earth Science Teacher Activities, North Central/South Central Section, GSA Meeting, Spring 1995

Geology, Geologic Time and Nebraska, New Publication From the Conservation and Survey Division (CSD), UNL

Native Vegetation Map of Nebraska, Available from CSD, UNL

Nebraska Earth Science Video Exchange

Earth Science Resources for Teachers

NESEN Planning Committee

Thoughts on Earth Science Education

Calculus Workshop Groups As A Humanistic Experience, Martin Vern Bonsangue

Humanistic Mathematics Network Journal

No abstract provided.

The Role Of Faith In Mathematics, Dick Wood

Humanistic Mathematics Network Journal

No abstract provided.

On Attracting Mathematics Majors, Kazem Mahdavi

Humanistic Mathematics Network Journal

No abstract provided.

The Basis For The Success Of The Potsdam Program, Rick Luttmann

Humanistic Mathematics Network Journal

No abstract provided.