Tony Koppi

Tony Koppi
Goshen College · Informatics

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112
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Publications

Publications (112)
Article
Particularly in the Australian context, this concept paper argues that much of the continent has highly weathered soil of great antiquity with poor agricultural productivity, that much younger soil also exists in juxtaposition, and that certain anthropogenic processes, such as soil inversion or any other radical soil management, can rejuvenate soil...
Article
Academic staffare required to include graduate attributes like problem-solving in student learning to meet university proclamations. In response to student evaluations that a traditional lecture-based first year agriculture science course was not effective in motivating students, a new course introduced problem-based learning (PBL) primarily to mot...
Article
Stronger linkages between the ICT industry and universities have been called for by both the ICT industry and by universities. The study described in this paper explores the ways in which the ICT industry believes it can and should contribute to ICT education and research in universities. The results confirm how important relationships with univers...
Article
Strengthening the teaching-research-industry-learning TRIL nexus in information, communications and technology ICT education has been proposed as a way of achieving improvements in student learning Koppi & Naghdy, 2009. The research described in this paper builds on previous work to provide a broader understanding of the potential outcomes associat...
Conference Paper
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This paper reports on the findings of a project to investigate the future needs of a soil science curriculum to produce work-ready graduates. Soil scientists are expected to deal with increasingly complex problems and graduates are required to not only have well developed soil science knowledge and skills, but can also work between and across other...
Article
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The teaching-research nexus concept has been extensively examined in the higher education literature, and the importance of industry linkages in information and communications technology (ICT) education has also been widely discussed. However, to date there has been little recognition of the full extent of relationships between aspects of teaching,...
Conference Paper
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To obtain a better understanding of WIL rationale and practices in Australian ICT degrees, a survey of managers and educational leaders of ICT was undertaken. These survey results were analysed and informed by discussions at a forum of ICT educational leaders. Results indicate that WIL practices are broad with a wide range of internal (university)...
Conference Paper
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The lack of female enrolments in ICT is widely recognised and has prompted a range of strategies to attract more women, most of which do not include curriculum changes at any level. Research suggests that there are aspects of the ICT curriculum that could appeal to females, particularly in relation to benefits to society and humanity in general, an...
Article
Soil Science is a unique discipline concerning a complex material that is part of many natural and utilitarian systems. As such, the teaching of Soil Science requires principles that reflect the nature of soil and the practices of soil scientists. Because no discipline-specific teaching principles could be found for Soil Science in the literature,...
Conference Paper
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This paper reports on a two-year soil science higher education learning and teaching project funded by the Australian Learning and Teaching Council. Collecting data from soil science stakeholders though an action learning process resulted in the development of a set of unique soil science teaching principles, which also included a proposed structur...
Article
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Student attrition is an issue of particular concern in the field of ICT because the industry faces staffing shortfalls. The study described in this paper provides further understanding of the causes of attrition from ICT courses by exploring the reasons students give for leaving their ICT courses. An online survey of early leavers from four Austral...
Conference Paper
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As part of an ALTC-supported curriculum development project, we engaged teaching staff, employers, current students and recent graduates in the discipline of soil science to develop a set of guidelines for online learning in our discipline. During a one-day Forum, three experienced practitioners in online learning design in engineering, science and...
Article
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We present a model for a collaborative activity intended to promote scholarship of teaching and contribute to curricular change through small-group discussion and reflection on feedback from current and former students. Reflection on teaching is often a lone activity and the literature suggests that lone reflection on teaching can fail to confront...
Article
An online survey was conducted of recent information and communications technology (ICT) graduates from 21 Australian universities. A range of abilities including personal/interpersonal, cognitive, business and technical were examined in relation to importance in the workplace and university preparation of those abilities. In addition, a set of six...
Article
Full-text available
An online survey of recent ICT graduates in the workplace was carried out as part of a recent project funded by the Australian Learning and Teaching Council. The survey was concerned with the ICT curriculum in relation to workplace job requirements and university preparation for these requirements. The survey contained quantitative and qualitative...
Conference Paper
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There is an increasing expectation that graduates in the discipline of soil science not only have a good grounding in existing knowledge, but the technical abilities and generic skills that enable them to use interdisciplinary approaches to solve real world problems. In doing so graduates have to be able to interact with members of the community at...
Conference Paper
Full-text available
Attracting more people to soil science is a concern shared by many practicing soil scientists and education institutions. Many disciplines have amateur societies whose members engage with the discipline out of sheer passion and personal interest. These amateur enthusiasts are members of the general community that have perceived something of value a...
Conference Paper
Full-text available
This paper describes an activity intended to promote scholarship of teaching through small-group discussion of feedback from students. There is a paucity of literature on group reflection of student feedback which this paper aims to address. Reflection on teaching is often a lone activity but this Australian Learning and Teaching Council (ALTC) sup...
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A problem-based learning approach was adopted for a unit of study in first year agricultural economics at the University of Sydney with the aim of starting development of students’ research skills earlier than usual. The novel teaching approach employed a structured and guided problem activity in the first semester and progressed to a more authenti...
Article
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A national Discipline-Based Initiative (DBI) project for Information and Communications Technology (ICT), funded by the Australian Learning and Teaching Council, has sought the opinions of recent graduates of ICT in the workplace to help inform the curriculum. An online survey was devised to question graduates on workplace requirements and universi...
Conference Paper
This session at the Australian Software Engineering Conference is concerned with ICT education from the holistic perspective of preparation in high schools, the university experience, transition to the workforce, and the contribution by industry, government, and professional bodies. The project to ascertain the issues and challenges facing the nati...
Article
Full-text available
A national Discipline-Based Initiative project for ICT, funded by the ALTC, has sought to identify the issues and challenges facing the sector. The crisis in ICT education spans high schools, universities and industry. The demand for skilled ICT graduates is increasing yet enrolments are declining. Several factors contribute to this decline includi...
Article
The essential factors dependent on soil structure that influence plant growth are soil/root contact, adequate air and water, and low mechanical impedance. Bulk density, shear strength and texture arc interrelated closely and permit quantification of these factors. A general relationship between clay content and vane shear strength of soil at field...
Article
Erosion and excessive runoff from a crusting and hard-setting red-brown earth may he ameliorated with suitable management. A field trial, near Cowra, New South Wales, to assess the long-term effect of different tillage systems was used to compare the effect of direct drilling with conventional district cultivation practices under continuous wheat....
Article
Physical and chemical properties were compared during 1992 in adjacent bio-dynamic and conventionally managed Haploxeralfs under improved, summer-irrigated pastures in the Goulburn Valley of N.E. Victoria. Intensive dairy production has been practised on both the farms since the early 1950s, and aspects of the bio-dynamic method have been practised...
Article
We report on a study aimed at assessing improvements in soil structure that developed when a reduced ground-pressure traffic system was introduced onto grassland previously compacted by conventional machinery traffic, and when a zero traffic system was introduced on land previously under a reduced ground-pressure system. Increases in the volume, av...
Article
growth of the sector at least during this decade1. The growth is expected to take place concurrently in all four major sectors of ICT i.e., hardware, software, services and communication. The expenditure in communication will continue to grow as the global community is more engaged in telephony, computing, commerce and entertainment. The service se...
Article
SUMMARYA method is described that permits the measurement of roots in situ in the soil using computerized image analysis to process images obtained from planar faces cut from a resin-fixed pot. Soil sample pots are initially impregnated with rapid-curing epoxy resin. Blocks are then cut from the impregnated pot with a diamond saw to expose a planar...
Article
summaryA method is described for using a quick setting epoxy resin to prepare a soil surface for infiltration measurements. It gives an unsmeared soil surface where the biological pores and structural surfaces are revealed. Experiments with an alluvial Prairie Soil and a Red Podzolic Soil, comparing steady state infiltration rates through cut smear...
Article
To bridge the gap between description of soil in the field, i.e. macromorphology (which is usually qualitative), and micromorphology (which may be quantitative), a technique for mesomorphological description is presented. Undisturbed vertical soil monoliths are impregnated with epoxy resin and features of interest are quantified using image analysi...
Article
Kaolin clays from soils in southeast Queensland give diffraction patterns which vary, particularly in the shape and position of the 00l reflections. To identify reasons for this variability, the kaolins in samples from forty soils were analysed for type, crystallinity, crystal size, and interstratification. Instrumental techniques used include X-ra...
Article
SUMMARYA stereological and spatial-statistically based method for the volumetric estimation of weathering of an in situ soil profile is described. The technique uses the distances between, and size of, zircon grains in undisturbed, horizontal, thin sections. Results are presented as volume attenuation indices, describing the decrease which occurs w...
Article
The weathering of highly quartzose flint-containing gravels, believed to be the remnants of Tertiary beach deposits in N.E. Scotland, has been studied in detail. The deposits also contain infrequent boulders of granite, quartz schists and granulites which are largely kaolinised, but the kaolin varies in crystallinity between the two sites investiga...
Article
Torus-shaped features 1–7 urn in diameter were found on the smooth surfaces of the structural units of a Red Podzolic Soil (Udic Haplustalf) B horizon and on the smooth surfaces within the columnar structures of a Solodized Solonetz (Typic Natrustalf)-SEM & EDS were used to characterize these features, and to determine their probable pedogenesis. T...
Article
SUMMARYA new soil thin sectioning technique which gives thin cross-sections (called sliver sections) of thin sections, is described. Optical analysis of soil thin sections and soil sliver sections, using plain, crossed polarized and circularly polarized light provides three-dimensional information on the micromorphology of clay coatings. This new t...
Article
Summary form only given. This paper describes a current UNSW project that aims to develop a whole new facet to university learning-a "university without walls" where teachers can be anywhere in the field and be able to meaningfully interact with students in different locations. We do this by combining a collection of disparate enabling technologies...
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Length Half day Objectives The purpose of the workshop is to help presenters to get away from the 'death-by-PowerPoint' that so many of us are subjected to at conferences. A traditional approach seems to be to have as many slides as possible and to talk quickly in the short timeframe often allowed at conferences. Adopting a more educational approac...
Article
Conventional methods of soil classification are based largely on hierarchies and treat soil attribute value ranges as exactly specifiable quantities. Misclassification may result from ignoring the continuous complex nature of soil variation, and the inability to sample and measure every aspect of soil. The Australian Great Soil Groups (GSG) system...
Article
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The online Learning Resource Catalogue (LRC) Project has been part of an international consor-tium for several years and currently includes 25 institutions worldwide. The LRC Project has evolved for several pragmatic reasons into an academic network whereby members can identify and share reusable learning objects as well as collaborate in a number...
Article
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Academic developers of online courses may not have experienced this mode of learning and teaching from the learner perspective. This article makes a comparison between suggestions for online course design from research literature and user perspectives from a focus group, responses to questions on the most and least effective aspects of online study...
Article
Full-text available
Academic developers of online courses may not have experienced this mode of learning and teaching from the learner perspective. This article makes a comparison between suggestions for online course design from research literature and user perspectives from a focus group, responses to questions on the most and least effective aspects of online study...
Article
Full-text available
Topsoil samples from 3 Vertosols located at Narrabri, Warren, and Dalby were treated with 4 aggregate liberation methods to determine their suitability for analysis by scanning electron microscopy (SEM). In addition to the ability of each method to liberate aggregates for assessment, the potential for consequent morphological deformation was also c...
Article
After three iterations of a mixed mode (online and face to face) staff development course, an evaluation was carried out to determine the participants’ perceptions of its quality as an online environment, its effectiveness in introducing staff to issues of accessibility and its success in enabling staff to develop skills in accessible course design...
Conference Paper
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Higher education institutions worldwide are adopting flexible learning methods and online technologies which increase the potential for widening the learning community to include people for whom participation may previously have been difficult or impossible. The development of courseware that is accessible, flexible and informative can benefit not...
Article
Full-text available
Higher education institutions worldwide are adopting flexible learning methods and online technologies which increase the potential for widening the learning community to include people for whom participation may previously have been difficult or impossible. The development of courseware that is accessible, flexible and informative can benefit not...
Conference Paper
Full-text available
Abstract This paper ,proposes ,an educational ,design plan ,for two ,modules ,within a professional development programme at UNITEC, about learning and teaching online. These modules address the areas of moderating online discussions, and online assessment. The application of the “SCARIE” model (a set of guidelines for effective online learning) to...
Article
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A differential staining procedure was developed to study the degree of association between soil structural form parameters, derived using the SOLICON image analysis system, and the root growth of cotton plants. Under the climatic conditions that prevailed during the experimental period, severe impedance of taproots was associated with a clod width...
Article
A differential staining procedure was developed to study the degree of association between soil structural form parameters, derived using the SOLICON image analysis system, and the root growth of cotton plants. Under the climatic conditions that prevailed during the experimental period, severe impedance of taproots was associated with a clod width...
Article
Full-text available
Online learning environments have a major role in providing lifelong learning opportunities. Lifelong learning is critical for successful participation in today's competitive work environment. This paper describes an online problem‐based learning approach to the creation of a student‐centred learning environment for the study of the biological scie...
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This paper considers the integration of pedagogical agents (autonomous learning assistant programs) into a technology-based learning environment. We explore the various roles that agents occupy in technology-mediated learning including; adaptive learning, mentoring and provision of context-sensitive feedback. We also discuss the impact of agent-bas...
Article
The notion of convergence of disparate technologies has become popular with governments, computing and business sectors in the 1990s; but how has the convergence been implemented in the educational sector? One evident area of convergence in education has been the use of the Internet. But according to Gosper et al (1996), the most likely strategies...
Article
Although iron stains are a commonly described feature of marine sand grains, the micromorphology and mineralogy of these features has not been determined previously. Light microscopy, scanning electron microscopy and X-ray diffractometry were used in this study to examine the grain surface features responsible for the iron staining of quartzitic be...
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Computer software and telecommunication technologies are being assimilated into the education sector. At a slower pace, educational methodologies have been evolving and gradually adopted by educators. The widespread and rapid assimilation of technology may be outstripping the uptake of better pedagogical strategies. Non‐pedagogical development of c...
Article
Effective teaching and learning empowers a student to take a deep approach to learning which results in the desirable outcomes of: holistic appreciation; knowledge that is active; communication and team work skills; problem‐solving and critical thinking abilities; and lifelong learning attitudes. This article examines the application and potential...
Article
This paper deals with the sensitivity of classification, i.e. the extent to which the modification of soil properties influences the degree of membership in a fuzzy or continuous soil classification system. The sensitivity around the centroids of four Australian Great Soil Groups (GSG), black earth, red-brown earth, krasnozem and euchrozem was dete...
Article
We report an image analysis study of soil macropore attributes in the top 100 mm of a winter barley (Hordeum vulgaris L.) seedbed in Scotland that had been prepared by chisel-ploughing and secondary tillage of a clay loam soil using either zero, reduced ground pressure, or conventional wheel-traffic systems. Five intact blocks of soil were collecte...
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The stability in water of soil from 3 contrasting Vertisols was measured using 5 tests. Two end-over-end shaking procedures, the Loveday & Pyle dispersion test, and the relatively rapid SOILpak procedure of Daniells & Larsen were assessed. The latter method has been modi¯ed to deal with several de¯ciencies such as its lack of score subdivisions; th...
Article
The stability in water of soil from 3 contrasting Vertisols was measured using 5 tests. Two end-over-end shaking procedures, the Loveday & Pyle dispersion test, and the relatively rapid SOILpak procedure of Daniells & Larsen were assessed. The latter method has been modified to deal with several deficiencies such as its lack of score subdivisions;...
Article
An experimental investigation of steady-state natural convection heat transfer was carried out in finite rectangular air layers heated from above. Two different aspect ratios, namely A = 20 and 80, and perfectly conducting boundary conditions on the end walls were used. The angle of inclination was varied from Φ = 0 (heated from below) to Φ = 180°...
Article
Koongarra, Australia, three drill cores from the Cahill Schist Formation containing Uore, and regolith above it containing secondary U-ore, were studied to ascertain the distribution of rare earth elements (REEs) and U. The unaltered schist has a REE trend similar to the Post Archaean Australian Shale (PAAS), which is, therefore, used as a normalis...
Article
The predominant methods of measuring soil structural stability are confined to laboratory methods that, by their nature, do not quantify the field stability of the soil. An instrument is presented here for measuring the soil structural stability in situ. Stability is assessed by a method based on the change in structural characteristics that may oc...
Article
The micromorphology and elemental composition of celestobarite crystals in a duripan from central Australia are examined. These crystals are flabellate (fan-shaped), have a Ba/Sr ratio of 11.1, and are up to 50 μm in size. The location of the celestobarite crystals within silicified roots and in close association with calcite and clay coatings indi...
Article
Currently there is a lack of quantitative data on the functional classification of soil structure, particularly in routine soil surveys, because field physical measurements of flow characteristics are slow and require expertise. A simple air permeameter was developed which allows rapid, in situ measurements to be made of the intrinsic permeability...
Article
Adjacent cultivated and never-cultivated areas of land were compared for a variety of chemical and physical properties to determine the effect of traditional cultivation practices on an Australian Rhodoxeralf. Those properties which changed most as a result of clearing and cultivation were pH, electrical conductivity, organic carbon, nitrogen and p...
Article
Peds bounded by undulating surfaces having a luster or shininess constitute the subsoil of many major soil types world-wide. Characteristics of ped surfaces, such as presence or absence of luster, color, texture, and porosity, are often used as diagnostic criteria for clay coatings at a high category level in soil classification. There is, however,...
Article
The effect of engineering practices for agriculture on soil macro-structure may be illustrated by image processing and interpretation of soil profiles. Images are obtained after impregnating the soil in the field with resin containing fluorescent dye. The resin mixture is applied at the prevailing water content and structural condition and allowed...
Article
Autoradiographs of thin sections from the M2 core in the regolith of the Cahill Schist Formation at Koongarra, Northern Territory, revealed that relatively large amounts of U occured in Fe-rich and Mn-rich areas. Electron microprobe analysis and X-ray maps showed that within the Fe-rich areas, U (<4%) is associated diffusely with Fe. Within Mn-rich...
Chapter
An experiment was carried out in a Vertisol used for irrigated cotton production to compare a broad range of procedures for the measurement of soil structural form. Examination of vertical and horizontal blocks of soil impregnated with resin containing a fluorescent dye provided evidence of features that are not shown clearly by the other methods....
Chapter
Koppi, A.J. and Klessa, D.A. 1994. Light and electron microscopy studies of uranium distribution in the regolith at Koongarra, N.T. In: A.J. Ringrose-Voase and G.S. Humphreys (Editors), Soil Micromorphology: Studies in Management and Genesis. Proc. IX Int. Working Meeting on Soil Micromorphology, Townsville, Australia, July 1992. Developments in So...
Article
The morphology and composition of some composite coatings-containing manganese oxide coatings and impregnations-that were associated with the structural pores in a black earth (Typic Pellustert) subsoil layer were examined using light microscopy, electron microscopy, and electron micro-analytical techniques. Detailed examination of composite coatin...
Article
Barite pseudomorphs after lenticular gypsum in a buried soil from central Australia are composed of loosely arranged platy crystals. These features were most probably formed by direct alteration with barium-rich solutions. The possible sources of the barium-rich solutions are briefly discussed.
Article
The use of image analysis in pore structural studies is reviewed with the general conclusion that methods tend to be slow. A method of rapid assessment of soil pore structure is discussed, and three modifications to the original technique are presented. These are: (1) development of a technique for obtaining and video-digitising a single vertical s...
Article
In the fifth year of a traffic management experiment on grassland comparing conventional (C), reduced ground pressure (R) and zero (Z) systems, differences in soil structure were characterized in the upper 100 mm. Soil bulk density and vane shear strength increased between systems in the order Z, R, C. A more detailed description of the soil struct...
Article
Soil structure was characterised in a grassland soil that had been compacted in the first, second and fourth years after establishment by a range of tyre-soil contact stresses. The largest of the stresses consistently reduced the annual yields of herbage during the 4 year period. Topsoil properties were assessed by bulk density (from the layer 0–12...
Article
Structural degradation of Vertisols (cracking grey clay soil) as a result of growing cotton under furrow irrigation has resulted in declining cotton yields. This degradation may be ameliorated with suitable management. A field experiment at Warren, N.S.W., Australia was set up to assess the long-term effects of repeated deep ripping plus gypsum, as...
Article
Soil aggregate stability, organic matter content, pH, bulk density, strength, and macropore attributes were assessed in order to evaluate the influence of grass root growth in a field sward. The amount of grass grown was varied by varying the quantity of applied nitrogen fertilizer: following one year with a uniform application rate, nitrogen ferti...
Article
The morphology and composition of manganese oxide accumulations associated with the structural pores in a black earth (Typic Pellustert) subsoil layer were examined using light microscopy, electron microscopy, X-ray diffraction and electron micro-analytical techniques. Birnessite was identified as the crystalline manganese oxide phase. There were s...