Digital Commons Network^™

Inventory Of Sub-Catchments Within The Albany Eastern Hinterland, B Radys

Resource management technical reports

The release of the "Salinity Action Plan for Western Australia' in December 996 highlighted the need for catchment scale planning and coordinated actions to reverse salinity trends.

A separate report has been produced for each major catchment area. Each report contains and inventory of all sub-catchments, with information on area, degradation risks and group activities with each catchment.

Phosphorus In The Landscape: Diffuse Sources To Surface Waters. Land And Water Resources Research And Development Corporation. Occasional Paper 16/98, Richard Davis, Anne Hamblin, E O'Loughlin, Nic Austin, R Banens, P Cornish, P Hairsin, M Mcculloch, Phil Moody, J Olley, B Prove, I Smalls, David Weaver

All other publications

The National Eutrophication Management Program (NEMP) and Environment Australia convened a workshop to develop a coherent overview of the sources and transport of diffuse phosphorus in Australian catchments based on the latest knowledge. The Land and Water Resources Research and Development Corporation (LWRRDC) and the Murray–Darling Basin Commission (MDBC) jointly fund NEMP. A select group of scientists attended the workshop and developed a coherent statement about phosphorus sources and transport in Australian catchments. The group did not extend this statement to include recommended management practices. This paper reports the findings from the workshop. State governments have developed algal and nutrient …

Putting Land Resource Information Into Perspective. Interpreting Land Resource And Capability Information To Assess The Impacts And Management Needs Of Different Land Uses And To Assist Strategic Planning, Land Assessment Pty Ltd, Agriculture Western Australia

Natural resources published reports

These notes were prepared by Martin Wells from Land Assessment Pty Ltd in June 1997 to assist in the delivery of this training course. The objective of the course is to provide land use planning practitioners with a working understanding of soil-landscape mapping and land capability assessment activities, and of their practical applications in land use planning.

Who Is This Course For?

Land use planners

* not only professional planners

* but all involved in making decisions on how land is used

* involves many government or semi-government bodies

* and also immediate land use decision makers, farmers and their …

"Con Respeto": Factors Related To The Academic Performance Of Mexican-American Fourth Graders In Selected Florida Elementary Schools, Mary Lindquist Mosley

Electronic Theses and Dissertations 1990 - 1999

The purpose of this study was to identify how various student, school, and staff predictors related to the academic performance of Mexican American fourth graders in selected schools as evidenced by their scores on the Florida Writes Assessment as well as on norm referenced achievement tests in reading comprehension and math applications. Three null hypotheses were tested to show if there was a correlation between predictors and these criterion variables: writing skills, reading comprehension, and math applications. A sample of 64 students from two Florida districts and twelve elementary schools was obtained. Data were collected from archival sources within each …

Analysis Of The Performance Of A Loop Radiator And A Spiral Applicator At Low Rf Frequencies, John M. Roman

Electronic Theses and Dissertations 1990 - 1999

This thesis addresses the electromagnetic analyses of two structures. The first structure, a low frequency loop antenna recommended for use by national standards on electromagnetic compatibility (EMC), is incorrectly specified to have the same voltage to magnetic field conversion ratio (antenna factor) when used with a 50 ohm receiver in lieu of a high impedance type ($>$600 ohm). Two independent measurement sets were performed to demonstrate the prevailing discrepancy, and a corrected antenna factor is presented for use with a 50 ohm receiver. The second structure, a partial spiral "pancake" applicator used to generate high EM fields in its …

Convenient State Machine Formalism For High-Level Control Of Autonomous Underwater Vehicles, Anouck Renee Girard

Electronic Theses and Dissertations 1990 - 1999

Recent successes in Autonomous Underwater Vehicle (AUV) technology have generated demand for broader, more general use of these vehicles, along with demand for longer, more complicated missions. However, AUVs are becoming more complex, and hence more difficult to program, test and maintain. A discrete event system would provide conditional execution for mission management, failure detection, and resource allocation techniques. The goal of this thesis is to provide a convenient formalism for discrete event systems that reduces the apparent complexity of the system while maintaining its robust capabilities. The chosen formalism allows the convenient representation of hierarchies of concurrent hierarchical state …

Checkpointing Schemes For High-Performance Parallel Applications In Networks Of Workstations, Fusen. He

Electronic Theses and Dissertations 1990 - 1999

In this thesis, a low interprocessor communication overhead and high performance data parallelism parallel application model in a network of workstations (NOWs) is proposed. Checkpointing and rollback technologies are used in this model for performance enhancement purpose. The proposed model is analyzed both theoretically and numerically. The simulation results show that a high performance of the parallel application model is expected. As a case study, the proposed model is used to the parallel Everglades Landscape Fire Model (ELFM) code which was developed by South Florida Water Management District (SFWMD). The parallel programming environment is Message-Passing Interface (MPI). A synchronous checkpointing …

Design And Control Of Spherical Gimbal For Laser Tracking System, Yingli. Wang

Electronic Theses and Dissertations 1990 - 1999

To assess and improve the accuracy of an intelligent machine such as a precision robot and a computer numerically controlled machine tool, it is exceedingly desirable to have a high performance Coordinate Measuring Machine (CMM). Among various coordinate measuring devices, a laser tracking CMM has the advantages of noninvasiveness and extremely high precision over a large workspace. In this dissertation, we concentrate on the design and control of a new type of spherical gimbal for laser tracking system, whose motion is constrained by two spherical surfaces and whose axes are motorized. By this design, principal errors of a conventional tracking …

Ecological Characterization Of A Disturbed Hardwood Forest, Faith Jennifer Dehring

Electronic Theses and Dissertations 1990 - 1999

The oak hammock within the Flamingo Road ESL in Broward County, Florida has been disturbed by a number of factors. Twenty-one permanent plots were established to characterize the vegetation of the site and to determine the impact of non-natives on diversity and stability of the hammock. Non-native species may reduce species diversity and stability of communities. Point quarter sampling was compared to quadrat sampling. High percentages of non-native species in hammock sampling plots reduced Sorensen index of community similarity values below the 50% minimum used to define intact communities. Hammock plots were placed in the same clade as non-native plots …

Dynamics Of Attitudes: Individual Beliefs To Cultural Norms, Helen C. Harton

Electronic Theses and Dissertations 1990 - 1999

Dynamic social impact theory (DSIT; Latane, 1996a; 1996b), a macro-level theory of social influence, predicts that discussion will lead to a self-organization of public opinion through decreasing minority sizes, increasing spatial similarity, and emerging correlations. The catastrophe theory of attitudes (CTA; Latane & Nowak, 1994), a micro-level theory, suggests that attitudes are a joint function of issue involvement and information favorability. This paper describes the predictions leading from these theories separately and as integrated and meta-analytically combines analyses of almost 500 students discussing social and political issues over a computer network with twenty previous studies testing aspects of CTA. The …

Comparison Of Academic Success Variables Of Black Male High School Graduates With Other Racial And Gender Populations In The Broward County School District, Florida, Melvin D. Gillespie

Electronic Theses and Dissertations 1990 - 1999

Black males in the United States and Florida are falling behind other groups in almost every measurement of academic success. Inadequate preparation in high school often discourages them from seeking postsecondary education, and reduces their chances of obtaining gainful employment. This study compared the variables which can predict academic success (number of college preparation courses, high school GPA, class rank, and standardized test scores) of black males with that of other racial populations and gender. The sample was limited to seniors who graduated in 1994 from the Broward County public schools and attempted the Florida college entry-level placement test. The …

Effects Of Adaptation On The Perception Of Motion: The Influence Of Competing Mechanisms, Jessica K. Espinoza

Electronic Theses and Dissertations 1990 - 1999

The effects of adaptation on motion were investigated using a modified apparent motion display. Unlike the classical apparent motion display, a BRLC (background relative luminance contrast) apparent motion display consists of two visible dots, each of a different luminance, which remain in the same position but exchange luminances on successive frames. This forms a bistable stimulus; stationarity-flicker or motion may be perceived, depending on the value of the BRLC. There was a significant interaction between condition (baseline or adaptation) and BRLC when testing motion perception following adaptation to a moving stimulus, a flickering stimulus and a static stimulus. Additionally, adaptation …

Effects Of A Community Language Learning/Comprehension Processing Strategies Model On Second Language Reading Comprehension, Roberta. Shames

Electronic Theses and Dissertations 1990 - 1999

The purpose of the study was to measure the effects of a Community Language Learning/Comprehension Processing Strategies Model of reading instruction on the acquisition of English reading comprehension skills in Level 1 limited English-proficient students. The study was conducted in a high school English for Speakers of Other Languages (ESOL) program in Palm Beach County, Florida. A total of 58 students took part. The study compared the English language reading comprehension skills of students taught by traditional ESOL strategies with those taught by a Community Language Learning/Comprehension Processing Strategies Model. Results were measured by the IDEA IPT Reading/Writing Test, Level …

Effects Of Teaching Mathematics To Learning Style Perceptual Preference On Academic Achievement Of Seventh-Grade Middle School Students, Rosemary Colarulli

Electronic Theses and Dissertations 1990 - 1999

Teaching methods that are effective with some students, fail with other students, because students perceive and process information differently. The personal preference by which one perceives and processes new material is called one's learning style. Using the Dunn and Dunn Learning Style Inventory assessment instrument, the learning style perceptual preference of 262 seventh grade students from a large, urban, middle school in southeast Florida were identified. This research investigated the effects of teaching mathematics to the preferred perceptual preference of these students in terms of academic achievement. Four teachers were trained in the Dunn and Dunn learning style teaching model …

Estimation Of Information: Theoretics-Based Delay Bounds Of Mpeg Traffic Over Atm Networks, Shuba. Jagannathan

Electronic Theses and Dissertations 1990 - 1999

This thesis addresses a method to deduce the statistical bounds associated with the cell-transfer delay variations (CDVs) encountered by the cells of MPEG traffic, transmitted in the Asynchronous Transfer Mode (ATM) networks. This study focuses on: (1) Estimating CDV arising from multiplexing/switching for both constant bit rate (CBR) and variable bit rate (VBR) traffics via priority allocation based simulations. (2) Developing an information-theoretics based technique to get an insight of the combined BER-induced and multiplexing/switching-induced CDVs in ATM networks. Algorithms pertinent to CDV statistics are derived and the lower and upper bounds of the statistics are obtained via simulations in …

Event-Based Data Model For Transportation Information Systems, Dongmei Wang

Electronic Theses and Dissertations 1990 - 1999

Trip-based data can provide important information about travel patterns and travel characteristics of people. To handle this type of transportation movement data in GIS (Geographic Information Systems), a new data model is needed to incorporate different aspects of a transportation movement with its spatial properties. From the study presented in this thesis, an event-based data model for transportation movement data was developed with the concepts of object orientation, feature-based approach, and relative referencing methods. The implementation of this new data model with a prototype system shows the capability of this data model in handling transportation movement data. This data model …

Trajectory Control Of A New Class Of Cnc Machine Tools, Daoxi. Xiu

Electronic Theses and Dissertations 1990 - 1999

One emerging application of parallel manipulators is to use them as CNC (Computerized Numerical Controlled) machine tools and recently several prototypes of such CNC machines have been developed, all based on hexapod machine--a type of parallel manipulators similar to a Stewart platform. The goal of this research is to develop an effective control scheme, cross-coupling control, for this type of CNC machine tools, which will reduce the contouring errors and thus further enhance their advantages. This dissertation describes the research work as follows. Firstly. based on the analysis of the kinematics and dynamics, a PID (Proportional-Integral-Derivative) controller was designed for …

Variances In Meta-Analysis, Katherine L B Humphreys

Electronic Theses and Dissertations 1990 - 1999

Meta-analysis is a statistical method of combining many individual analyses. This thesis reviews the need for meta-analysis; the many statistical consideration facing the meta-analyst; and some of Hedges' results concerning the combined estimate of effect size with unequal weights from his 1981 and 1982 papers. Unequal weights used to combine estimates of effect size in meta-analysis are derived using the variances given by the large sample, normal approximation of the distribution of Hedges' unbiased estimates of effect sizes. These variances depend on the effect size and the sample sizes of both experimental and control groups. This creates circular definitions and …

Measurement Of The Diffractive Structure Function FD(4)2 At Hera, J. Breitweg, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, R. Yoshida, H. Zhang, Margarita C. K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, I. Gialas, P. Giusti, G. Iacobucci

Faculty Publications

This paper presents the first analysis of diffractive photon dissociation events in deep inelastic positron-proton scattering at HERA in which the proton in the final state is detected and its momentum measured. The events are selected by requiring a scattered proton in the ZEUS leading proton spectrometer (LPS) with xL > 0.97, where xL is the fraction of the incoming proton beam momentum carried by the scattered proton. The use of the LPS significantly reduces the contamination from events with diffractive dissociation of the proton into low mass states and allows a direct measurement of t, the square of the four-momentum …

Diffractive Dijet Cross Sections In Photoproduction At Hera, J. Breitweg, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, R. Yoshida, H. Zhang, Margarita C. K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

Differential dijet cross sections have been measured with the ZEUS detector for photoproduction events in which the hadronic final state containing the jets is separated with respect to the outgoing proton direction by a large rapidity gap. The cross section has been measured as a function of the fraction of the photon (xγOBS) and pomeron (βOBS) momentum participating in the production of the dijet system. The observed xγOBS dependence shows evidence for the presence of a resolved-as well as a direct-photon component. The measured cross section dσ/dβOBS increases as βOBS increases indicating that there is a sizeable contribution to dijet …

Dijet Cross Sections In Photoproduction At Hera, J. Breitweg, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, R. Yoshida, H. Zhang, Margarita C. K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

Dijet cross sections are presented using photoproduction data obtained with the ZEUS detector during 1994. These measurements represent an extension of previous results, as the higher statistics allow cross sections to be measured at higher jet transverse energy (ETjet). Jets are identified in the hadronic final state using three different algorithms, and the cross sections compared to complete next-to-leading order QCD calculations. Agreement with these calculations is seen for the pseudorapidity dependence of the direct photon events with ETjet > 6 GeV and of the resolved photon events with ETjet > 11 GeV. Calculated cross sections for resolved photon processes with 6 …

Charged Particles And Neutral Kaons In Photoproduced Jets At Hera, J. Breitweg, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, R. Yoshida, H. Zhang, Margarita C. K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

Charged particles (h±) and K0 mesons have been studied in photoproduced events containing at least one jet of ET > 8 GeV n a pseudorapidity interval (-0.5, 0.5) in the ZEUS laboratory frame. Distributions are presented in terms of transverse momentum, pseudorapidity and distance of the particle from the axis of a jet. The properties of h± within the jet are described well using the standard settings of PYTHIA, but the use of the multiparton interaction option improves the description outside the jets.

Measurement Of Jet Shapes In Photoproduction At Hera, J. Breitweg, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, R. Yoshida, H. Zhang, Margarita C. K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

The shape of jets produced in quasi-real photon-proton collisions at centre-of-mass energies in the range 134-277 GeV has been measured using the hadronic energy flow. The measurement was done with the ZEUS detector at HERA. Jets are identified using a cone algorithm in the η - φ plane with a cone radius of one unit. Measured jet shapes both in inclusive jet and dijet production with transverse energies EjetT > 14 GeV are presented. The jet shape broadens as the jet pseudorapidity (ηjet) increases and narrows as EjetT increases. In dijet photoproduction, the jet shapes have been measured separately for samples …

High-ET Inclusive Jet Cross Sections In Photoproduction At Hera, J. Breitweg, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, R. Yoshida, H. Zhang, Margarita C. K. Mattingly, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

Inclusive jet differential cross sections for the reaction e+p → e+ + jet + X with quasi-real photons have been measured with the ZEUS detector at HERA. These cross sections are given for the photon-proton centre-of-mass energy interval 134 < W < 277 GeV and jet pseudorapidity in the range -1 < ηjet < 2 in the laboratory frame. The results are presented for three cone radii in the η - φ plane, R = 1.0, 0.7 and 0.5. Measurements of dσ/dηjet above various jet-transverse-energy thresholds up to 25 GeV and in three ranges of W are presented and compared to next-to-leading order (NLO) QCD calculations. For jets defined with R = 1.0 differences between data and NLO calculations are seen at high ηjet and low EjetT. The measured cross sections for jets defined with R = 0.7 are well described by the calculations in the entire measured range ηjet and EjetT. The inclusive jet cross section for EjetT > 21 GeV is consistent with an approximately linear variation with the cone radius R in the range between 0.5 and 1.0, and with NLO calculations.

Microwave Filtering Of Unwanted Oscillations On Base Of Hexagonal Ferrite Composite Thick Films, Marina Koledintseva, Alexander A. Kitaytsev, Andrey A. Shinkov

Electrical and Computer Engineering Faculty Research & Creative Works

The paper is aimed at the design of waveguide filters of lower frequencies using composite thick films (CTF) made of high-anisotropy polycrystalline hexagonal ferrite powders. Theoretical and experimental results describing the possibility of forming the desired frequency characteristic of the filters are presented

A Reassessment Of The Hybrid Approach To The Construction Of Regional Input-Output Tables, Steven Brand

Plymouth Business School Theses

This thesis lays the foundation for the creation of an economic database for the counties of Devon and Cornwall in the form of a regional input-output table. The thesis reconsiders the popular hybrid approach to the construction of such tables. In particular, the nonsurvey-to-survey ordering of procedure is questioned. The thesis attempts to restore a more logical preference-order which begins with first-best (survey) estimation methods and extends to second-best (survey-based-nonsurvey) methods. The third-best methods of estimation (pure nonsurvey i.e. location quotient) are excluded from the process altogether. The thesis is largely concerned with the development of the second-best method. The …

The Effects Of Highlighting On High School Band Students' Performance, Richard J. Tuttle

Theses and Dissertations

No abstract provided.