Digital Commons Network^™

Kurikulum Pendidikan Alam Sekitar Maktab Perguruan : Kesedaran Guru Pelatih / Sharifah Bt. Zakaria, Sharifah Zakaria

Pre-2000 Student Works

No abstract provided.

Boundedness, Periodicity And Stability Of Some Difference Equations, Amal M. Al-Amleh

Open Access Dissertations

We investigate the boundedness character, the periodic nature, and the stability behavior of solutions of three difference equations.

The first equation is

[Mathematical equations can not be displayed here, refer to PDF]

where the parameters A and B and the initial conditions ^x-1 and x₀ are nonzero real numbers. We obtain necessary and sufficient conditions for every solution to be eventually periodic. We also give a precise description of the period in terms of A, B, and the initial conditions.

The second equation is

[Mathematical equations can not be displayed here, refer to PDF]

where the function ∫ …

Predicting Mathematics Performance: A Structural Equation Model, Linda N. Bruno

Open Access Dissertations

The relationships among personality and socialization factors that may contribute to mathematics performance were investigated using structural equation modeling. Five nested models were examined: a full model, a mediational model, a model eliminating the mediator, a regression model, and a model combining the significant paths from other models. Preliminary analyses (i.e., MANOVAS, follow-up univariate ANOVAS) revealed that men reported significantly higher math self-efficacy than women. Evaluation of the structural models identified the full model as the best representation of the data. This model examined the relationships among gender, gender schema, math anxiety, math self-efficacy, math attitude, math experience, math socialization, …

Stability And Periodicity Of Some Difference Equations And Applications, Candace Marie Kent

Open Access Dissertations

No abstract provided.

Scheduling With Temporal And Logical Constraints, Gregory Bennett Jones

Open Access Dissertations

No abstract provided.

Exploring The Complicationist Gambit: An Austrian Approach To The Economic Analysis Of Law, Gregory S. Crespi

Faculty Journal Articles and Book Chapters

No abstract provided.

Dispersion Minimization In Capillary Electrochromatography: A Knox-Parcher Study On Packed Capillaries., Preston Charles Lowe

Graduate Theses, Dissertations, and Problem Reports (ETD)

Electrochromatography (CEC), a hybrid of LC and CE, is a recent and fairly unexplored method of analysis, but has already been shown to be a very efficient separation technique. This thesis comprises a study of the Knox-Parcher effect and its influence upon CEC. The Knox-Parcher effect, which has been established in GC and LC, describes the dependence of reduced plate height, h, on the ratio, r, established by the ratio of the channel diameter (dc) to the particle diameter (dp). This study was conducted using particles with a diameter of 60 mm and capillaries having inner diameters ranging from 246 …

An Object Relationship Framework And Persistence In Java., Srinivas S. Vangari

Graduate Theses, Dissertations, and Problem Reports (ETD)

The main objective of this thesis is to provide the design and implementation of an object relationship framework in Java where objects can form relationships with other objects dynamically at runtime. Relationships among objects have long been recognized as the important semantic constructs facilitating ease of analysis & design of large complex systems. Almost all modeling techniques have notations to describe the existence of relationships among software components. But unfortunately the relationships identified in analysis stage could not be mapped to the equivalent high-level language constructs during the implementation because of lack of high level semantic support for relationships in …

Dynamic Response Of The Human Skull-Brain Complex To Impact: Points Of Maximum Stress And Pressure., Rinitha Palkamsetty

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study addresses the transient dynamic response of a human skull-brain complex under impact loads. Three cross-sections; sagittal, transverse and coronal of the brain are considered to perform the transient dynamic analysis that describes the kinematics and stress wave patterns of the internal motions in the skull and brain mass. The models include cerebral spinal fluid and meningi membrane along with the skull and the viscoelastic brain tissue. The analysis is performed using the program LS-DYNA3D for the analysis of frontal, lateral and top impact. The results produced include the loci of points that carry the maximum stresses as the …

A Study Of Impact Using 80-Derometer Rubber., Steven Harold Howard

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this work was to model and test an intermediate material that would absorb impact loads induced during deployment of a deployable rollover protective structure (ROPS) designed for use on a farm tractor. The design criteria required that the intermediate material, under compressive loads, maintain the integrity of all moving parts while introducing a minimum impact time of 0.005 seconds. A "ring" shaped part made of 80-Derometer rubber (a product of the Goodyear Corporation) was incorporated into the impact region of the ROPS deployment mechanism. Theoretical calculations were made based on energy balance equations and 2-D Working Model …

The Relationships Among Hypermedia-Based Instruction, Cognitive Styles And Teaching Subject-Verb Agreement To Adult Esl Learners., Fuqiang Zhuo

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examines the relationships among hypermedia-based instruction, cognitive styles, and teaching subject-verb agreement to adult ESL learners in order to find an effective approach to teach grammar which is a very thorny issue in the field of second and foreign language instruction and learning. Therefore, the effect of hypermedia on grammar instruction and learning is the main focus in this study. The treatment was the employment of hypermedia creating a new learning environment in which the adult ESL learners could be benefited from the advantages of new technology. Based on the current methodologies, approaches, and principles of second and …

Comparative Risk Assessment And Environmental Priorities Projects: A Forum, Not A Formula, John S. Applegate

Articles by Maurer Faculty

No abstract provided.

Symbolic Behavior: Reorganizing And Expanding Stimulus Classes Through Matching And Naming., Oliver Wirth

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of the present study was to further clarify the structural and functional properties of stimulus equivalence classes and functional stimulus classes relative to the procedures that establish them. With college students, stimulus equivalence classes were established using a standard selection-based matching-to-sample (MTS) procedure, and functional stimulus classes were established using a topography-based naming task. During the naming trials, students were trained to say distinct nonsense words in the presence of arbitrarily assigned sets of symbols. Computer-controlled voice-recognition software was used to record and analyze students' vocal responses for accuracy and speed. Experiment 1 examined whether stimulus equivalence classes …

Error Correcting Codes Associated With Complex Hadamard Matrices, I. Heng, C. H. Cooke

Mathematics & Statistics Faculty Publications

For primes p > 2, the generalized Hadamard matrix H(p,pt) can be expressed as H = x^A, where the notation means h_ij = x^aij. It is shown that the row vectors of A represent a p-ary error correcting code. Depending upon the value of t, either linear or nonlinear codes emerge. Code words are equidistant and have minimum Hamming distance d = (p − 1)t. The code can be extended so as to possess N = p²t code words of length pt …

The Adjoint Alternative For Matrix Operators, C. H. Cooke

Mathematics & Statistics Faculty Publications

The following inverse problem is considered: given a matrix B of rank r, does there exist a matrix A such that

B = T(A) = adjoint (A)

where the classical adjoint operation is intended? Conditions are determined on the rank of B which decides whether or not B lies in the range of the matrix adjoint operator.

Time-Resolved Studies Of Ultracold Ionizing Collisions, Scott D. Bergeson, C. Orzel, S. Kulin, S. L. Rolston

Faculty Publications

Using 40 ns laser pulses, we probe the real-time dynamics of ultracold ionizing collisions in metastable xenon. We time resolve both shielding and enhancement effects, and observe the production of Xe2^+ molecular ions through associative ionization. We estimate the rate of molecule formation in excited-state collisions, and directly measure the role of both flux enhancement and excited state survival in the collisional enhancement process. Conceptually simple theoretical models are used to predict the dynamics of the collisional shielding.

Performance Of Flexible Pavements Reinforced With Geogrids., Bora Kutuk

Graduate Theses, Dissertations, and Problem Reports (ETD)

This report presents the results of an investigation on the effectiveness of glass fiber grids as a reinforcement of the asphalt base layer in a flexible pavement. The study involved both laboratory experimental work and computer analysis of pavement sections. As part of the experimental work, twenty flexible pavement sections (with and without glass fiber grids) were constructed and tested in the laboratory. The laboratory-scale pavement sections were instrumented with pressure cells, displacement gages, and strain gages. Test sections were subjected to 1,000,000 load applications at a frequency of 1.2 Hz. Static loading tests were conducted at intervals of 100,000 …

Water Demand Management For Casablanca, Morocco., Mohamed Lahlou

Graduate Theses, Dissertations, and Problem Reports (ETD)

Water shortages could significantly curtail economic growth and development in Casablanca, Morocco. Conservation programs in Morocco have been implemented only occasionally, usually during a water shortage crisis arising either from technical reasons or from drought. Public awareness activities suffer from a lack of effectiveness and do not fulfill the desired objectives. The purposes of this study are to examine water consumption characteristics in Casablanca and develop approaches for water management to help assure that shortages will not undermine the prospects for sustainable economic development. Research procedures used were the development and estimation of water demand models for the residential/commercial, industrial, …

A Description Of The Instructional And Assessment Practices Of Selected Elementary Teachers., Mary D. Morris

Graduate Theses, Dissertations, and Problem Reports (ETD)

Three distinct teachers, recognized by their administrators as excellent, were chosen to participate in a study designed to describe a recent phenomena in education. All three teachers were members of a faculty that was recognized as a Professional Development School in collaboration with the Benedum Foundation. Traditionally educators have looked to their local school district to provide continuing education. This professional development covers a wide range of topics and is given with a random approach. Recently there have been schools that have decided that their instruction and assessment could change to incorporate more alternative methods to accommodate a variety of …

Evaluation Of The Effect Of Temporal Variations In Flow Patterns On Capacity Design For Underground Coal Mine Belt Systems., Xueming Wang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Belt conveyor haulage systems are critical to keep an underground-coal mine running profitably. It is not easy to design a reliable and efficient system. The issues associated with designing the capacity for a belt conveyor and a bunker are addressed in this dissertation. Several design models have been discussed, and discrete-event simulation models are recommended as the most flexible and useful tools. Most of the simulation models require the use of a step-function model to describe the loading process at each loading point. Over the years, simulation practitioners have generally employed one of the three conventional models, the peak loading …

The Relationship Between Gender, Faculty Development, And Class Size And Sense Of Efficacy Of College Mathematics Teachers., Beth Cipoletti

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to examine the relationship between gender of the teacher, faculty development, and class size of college mathematics teachers. The population for this study were 272 randomly selected institutions nationwide granting degrees in mathematics. A survey packet with a cover letter, a copy of the Teacher Efficacy Scale (Gibson & Dembo, 1984), and a questionnaire was mailed to the mathematics departments at each of the selected institutions. The recipient of the mailing was asked to either complete the enclosed instruments or forward the packet to a fellow full-time mathematics teacher. The return rate was 46%. …

Cardinal Numbers Connected With Adding Darboux-Like Functions., Francis Edmund Jordan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Let {dollar}F\\subseteq\\IR\\sp\\IR.{dollar} The additivity A(F) of F is the minimum cardinality of a family {dollar}G\\subseteq\\IR\\sp\\IR{dollar} with the property that {dollar}h\\ +\\ G\\subseteq F{dollar} for no {dollar}h\\in\\IR\\sp\\IR.{dollar} The additivities of various families of functions which generalize some aspect of continuity are known. These families, referred to as the Darboux-like functions, include the almost continuous, Darboux, connectivity, perfect road, peripherally continuous, and extendable functions. The additivities of the complements of the Darboux-like families are calculated or estimated. If {dollar}F\\subseteq\\IR\\sp\\IR{dollar} the additivity of {dollar}\\IR\\sp\\IR\\\\ F{dollar} is the minimum cardinality of a family {dollar}G\\subseteq\\IR\\sp\\IR{dollar} with the property that {dollar}(h + G)\\cap F\ot=\\emptyset{dollar} for every …

Development Of A Tolerance Design Model In Manufacturing Assembly And Design Of Cost-Based Cusum Control Charts Using Taguchi Quality Loss Function., Jung-Dae Kim

Graduate Theses, Dissertations, and Problem Reports (ETD)

The quadratic loss function has been used in the statistical and control theory literature. Taguchi applied quadratic loss function to quality improvement. His quality loss function has been known to be effective in assessing quality loss in monetary terms, while most of the traditional quality control techniques, such as tolerance design and control chart design, use estimated cost factors. Taguchi's quality loss function concept is different from traditional methods in which all the values within the specification limits are equally acceptable. However, his idea is that for many products, parts elements and components, a target or nominal size or value …

Thermal Stress Prediction For Direct-Chill Casting Of A High Strength Aluminum Alloy., Jian Wan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Direct chill (D.C.) casting is one of the most important semi-continuous methods for the production of high strength aluminum alloys. The enormous unevenly cooling of ingots during the casting process can cause significant thermally induced stresses, which may result in solidification cracking. The control of the cracking during DC casting is a state-of-art technology, and many finite element models have been applied to simulate the solidification process during ingot casting. So far, most of the simulations can predict the thermal fields of the ingot accurately, but very few works can get satisfactory thermal stress profiles. One of the major difficulties …

Choice, Changing Over, And Reinforcement Delay., Timothy Alan Shahan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The independent effects of two normally confounded delays to reinforcement produced by changing between concurrent variable-interval schedules of reinforcement were examined with pigeons. In Experiments 1 and 2, combinations of changeover delays and fixed-interval travel requirements were arranged for changeovers in a changeover-key concurrent schedule procedure. The delay from a changeover-produced change in stimulus conditions to a reinforcer was varied while the delay between the last response on one alternative and a reinforcer on the other (the total obtained delay) was held constant. Changeover rates decreased as a negative power function of the total obtained delay. The delay between a …

Daubert V. Merrell Dow Pharmaceuticals, Inc.: Gatekeeping Or Industry Safekeeping, Janine M. Kern, Scott R. Swier

South Dakota Law Review

No abstract provided.

Imsa 1998 Profile, Office Of College And Academic Counseling

IMSA Profile

"IMSA, a three-year public residential educational program for students (grades 10-12) talented in mathematics and science is a founding member of the National Consortium for Specialized Schools of Science, Mathematics and Technology. As an educational laboratory, IMSA designs and tests innovative programs and methods to share with other teachers and schools in Illinois and beyond."*

*Excerpt from the IMSA 1998 Profile

[Introduction To] Schaum's Outlines Fundamentals Of Computing With C++, John R. Hubbard

Bookshelf

This book is intended to be used primarily for self study, preferably in conjunction with a regular course in the fundamentals of computer science using the new ANSI/ISO Standard C++. The book covers topics from the fundamental units of the 1991 A.C.M. computing curricula.

1998 January, Office Of Communications & Marketing, Morehead State University.

Morehead State Press Release Archive, 1961 to the Present

Morehead State University press releases for January of 1998.

Age, Growth, And Mortality Of Black Drum, Pogonias Cromis, In The Chesapeake Bay Region, Cynthia M. Jones, Brian Wells

OES Faculty Publications

We used otolith ageing to describe the population dynamics of black drum, Pogonias cromis, collected over a three-year period from the Chesapeake Bay region's commercial and recreational fisheries. Black drum average age, total length, and weight were 26 years, 109.5 cm, and 22.1 kg respectively. The oldest fish was 59 years and fish older than 50 years were present in the catch from 1990 to 1992. Growth in length slowed by age 20, whereas growth in weight did not slow until age 45. A von Bertalanffy growth function was fitted to our data (L(infinity) = 117.3 cm, …