Physical Sciences and Mathematics Commons^™

Complementary Trapezoids Living In The Same Circle, John Hawkins, David Stone

John B. Hawkins

Problem 5153 in the SSMA Journal Problems Section posed the situation of two trapezoids (1, 1, 1, x) and (x, x, x, 1) both inscribed in a circle. The goal of the problem was to find x and the size of the circle. We show that there are only three possible solutions and that, surprisingly, the Golden Ratio shows up in the answers. Then we generalize to two trapezoids (a, a, a, b) and (b, b, b, a). Finally, we show how the solutions arise from inscribed decagons.

Analysis Of Lignocellulosic Biomass Dissolved In Ionic Liquid Media By Dart-Mass Spectrometry, M. Mazzotta, D. Smith, L. Morton, Samuel Morton

Samuel A Morton

No abstract provided.

Ionic Liquids For The Utilization Of Lignin, Samuel Morton, A. Placido, R. Pace Iii, L. Morton, J. Wallace

Samuel A Morton

No abstract provided.

Oxidation Of Lignin Model Compounds By Ionic Liquid-Tagged Metalloporphyrins In Corresponding Ionic Liquid Solvents, J. Baker, A. Sharits, Samuel Morton, L. Morton

Samuel A Morton

No abstract provided.

Editorial: "You Talkin' To Me?", Katina Michael

Professor Katina Michael

Advancing knowledge through robust research is an honourable aim- being scientific, finding the right methodology, executing project phases meticulously, and reporting on the outcomes as objectively and accurately as possible. But may I begin my inaugural editorial by saying that an even higher ideal to advancing knowledge is critiquing it as it happens. Reflective practice is not just something to be done by academics in their teaching- reflective practice is what we should all be doing as we go about undertaking our various day-to-day work tasks. For the engineer engaged in research and development, whether in industry or government, reflective …

New Frontiers In Ocean Exploration: The 2010 And 2011 E/V Nautilus Field Seasons, K. Bell, R. Ballard, D. Coleman, C. Roman, M. Brennan

Christopher N. Roman

The Exploration Vessel NAUTILUS is creating a focus of international leadership for the development and integration of leading-edge technologies, educational programs, field operations, and public outreach programs for ocean exploration, in partnership with NOAA, National Geographic Society, Office of Naval Research, Sea Research Foundation and other sponsors. To do so, the program uses a complement of deep submergence vehicle systems and telepresence technologies to engage scientists, educators and the public, both at sea and ashore, allowing them to become integral members of the on-board exploration team. Two four-month field seasons were undertaken aboard NAUTILUS (2010-2011) to the Black, Aegean and …

The Role Of An Online Community To Support Overweight Adolescents: A Survey Of Australian Healthcare Professionals. Research In Progress, Leisa Armstrong, Rachel Mahncke

Leisa Armstrong

In Australia, as in other developed countries, there is au increasing trend of obesity in children and adolescents. Research studies indicate that technology may be a contributing factor to this epidemic and that behavioural change may be a significant solution. One route of inquiry identified as potentially beneficial is that of the development of online communities for children and adolescents to discuss issues such as obesity to contribute to behavioural change. This research outlined in this paper aims to determine if such an online community is feasible and potentially effective to contribute to the changes required. A survey of health …

Applying Data Mining Techniques In The Selection Of Plant Traits, Dean Diepeveen, Leisa Armstrong

Leisa Armstrong

In the agricultural sector, farmers are provided with crop related information by various research agencies in order to make critical decisions about which is the most profitable crop variety choice. Research agencies provide information which is generic, rather than being tailored to the individual farmers cropping situation. A number of specific plant and growth traits are used to establish the most suitable crop varieties. When selecting crop varieties for release to growers, the application of data mining techniques to crop research data enables the customization of information to each individual farmers farming situation. The challenge for agricultural research perspective is …

C-Commerce Innovation: Unravelling The Effects Of Knowledge Ties On Embedded Network Structure, Mark Brogan, Leisa Armstrong

Leisa Armstrong

Relative to other nations, economically significant activity in Australia and New Zealand is skewed toward micro and small business. Issues of scale and- access to resources and expertise, suggest issues for Australian and New Zealand SMEs seeking to compete in the era of the global Internet economy. Collaborative, or so-called C-commerce, has arisen as a concept and key enabler for clustering of SMEs to secure resource advantage and to promote global competitiveness. Through the lens of a C-commerce case study in tourism, this paper explores network/actors that impinge upon C-commerce innovation in an SME setting. The paper demonstrates the usefulness …

An Evaluation Of Methodologies For Eagriculture In An Australian Context, Leisa Armstrong, Dean Diepeveen

Leisa Armstrong

Australian agricultural producers’ profits are dependent on the decisions they make about farm productivity systems. They may use recommendations and information provided by government agencies and private consultants. For cereal growers, success is dependent on decisions made about selection of crop varieties suitable for their agronomic and climatic conditions. This paper reports on research which aimed to evaluate some current eAgriculture methodologies for their application in the Western Australian agricultural industry. In particular the paper illustrates the findings from a project which aimed to explain the variability seen in crop varieties grown in Western Australia. The problems associated with crop …

Securing J2me Mobile Application Api Using Xacml, Gautham Kasinath, Leisa Armstrong

Leisa Armstrong

Following Moore's law, the numbers of mobile phones and their capabifities have increased exponentially in recent years. The platform of choice for running applications on resource constrained devices such as mobile phones, today, is the Java 2 Micro Edition (J2ME) with Connected Limited Device Configuration (CLDC). This popularity exposes the security risks. These risks include the loss of data, money and privacy. Means of securing mobile phones and communication have been weI! researched and models have been proposed, based on their success on desktop computers. However, little has been done to explore and correct inherent flaws and possible vulnerabilities in …

Selecting Areas For Land Use Change In A Catchment, Neil Dunstan, Leisa Armstrong, Dean A. Diepeveen

Leisa Armstrong

Some farming areas in Australia have been degraded by agricultural practices that result in rises in the water table that bring salt to the surface and reduce the quality of runoff water and the yield from pasture and crops. There is a need for a balanced choice of land uses that can reduce the salinity problem. A framework is proposed that uses catchment data and a hydrology model to predict areas with high rates of recharge and to identify sites for land use change.

An Eagriculture-Based Decision Support Framework For Information Dissemination, Leisa Armstrong, Dean Diepeveen, Khumphicha Tantisantisom

Leisa Armstrong

The ability of farmers to acquire knowledge to make decisions is limited by the information quality and applicability. Inconsistencies information delivery and standards/or the integration o/information also limit decision making processes. This research uses a similar approach to the Knowledge Discovery in Databases (KDD) methodology to develop an ICT based framework which can be used to facilitate the acquisition of knowledge for farmer's' decision making processes. This is one of the leading areas of research and development for information technology in an agricultural industry, which is yet to utilize such technologies fully. The Farmer Knowledge and Decision Support Framework (FKDSF) …

An Information-Based Decision Support Framework For Eagriculture, Leisa Armstrong, Dean Diepeveen

Leisa Armstrong

The ability of farmers to acquire knowledge to make decisions is limited by the information quality and applicability. An inconsistency in information delivery and standards for the integration of information also limits the decision making process. Knowledge Discovery in Databases (KDD) methodology described for the data mining is an example of how frameworks can be used to facilitate such data integration. This research will examine how such a ICT based framework can be used to facilitate the acquisition of knowledge for the farmer decision making process. The Farmer Knowledge and Decision Support Framework (FKDSF) takes information provided to farmers and …

An Air-Sea Flux Experiment For 2030, P. Cornillon, D. Farmer, C. Roman, I. Ginis, S. Grilli

Christopher N. Roman

In January 2011 the University of Rhode Island held a two day retreat for faculty and research scientists interested in where the field is going over the next 20 years. The retreat began with presentations detailing the current status and anticipated advances in genetics, nanotechnology, numerical modeling and robotics. Participants then outlined scientific problems that they expect will exist in 2030. This was followed by breakout sessions in which participants discussed experiments, based on anticipated technological advances, that might be undertaken in the 2030 time frame to address some of the identified problems. In this presentation we outline one of …

Solving Elliptic Equations On An Amr Grid Hierarchy: Are Iterations Required, Donna Calhoun

Donna Calhoun

When solving elliptic problems using a finite volume scheme on a patch-based grid hierarchy of adaptively refined meshes, the question of how to preserve numerical conservation naturally arises. One way that researchers have used to maintain conservation at coarse/fine boundaries is to introduce a conservative "fix-up" at these boundaries between coarse and fine refinement patches. For explicit time stepping schemes, these fix-ups can be applied once, after the time step. But for implicit schemes, the quantity needed to ensure conservation comes out of a coupled solution process, and cannot be computed explicitly. But for at least two decades, researchers actively …

On Some Recent Applications Of The Coanda Effect To Acoustics, Caroline Lubert

Caroline P Lubert

No abstract provided.

Enforcing Multitenancy For Cloud Computing Environments, Jinan Fiaidhi, Irena Bojanova, Jia Zhang, Liang-Jie Zhang

Jia Zhang

No abstract provided.

Laboratory Manual For Physics, Gary Lewis

Gary C. Lewis

No abstract provided.

Interactive Learningware For Physics Vol. 1: Mechanics, Thermodynamics, Waves, James Tanner, Gary Lewis

Gary C. Lewis

Retaining the comprehensiveness and rigor of the previous edition, this sequel has been dramatically revised to be more student oriented. Definitions and issues have been improved, making them tighter and more easily understood. More than 400 sample problems have been updated and expanded to reinforce physics concepts. Formulas involving elements of calculus are better explained due to additional subsections. A wealth of animated illustrations and full-color photographs will capture today's visually-oriented students' attention.

Interactive Learningware For Physics Vol. 2: Fundamentals Of Physics, James Tanner, Gary Lewis

Gary C. Lewis

Retaining the comprehensiveness and rigor of the previous edition, this sequel has been dramatically revised to be more student oriented. Definitions and issues have been improved, making them tighter and more easily understood. More than 400 sample problems have been updated and expanded to reinforce physics concepts. Formulas involving elements of calculus are better explained due to additional subsections. A wealth of animated illustrations and full-color photographs will capture today's visually-oriented students' attention.

Beautiful Bijections For Permutation Patterns, Lara Pudwell

Lara K. Pudwell

No abstract provided.

Road Trips In Geodesic Metric Spaces And Groups With Quadratic Isoperimetric Inequalities, Rachel Bishop-Ross, Jon Corson

Rachel E. Bishop-Ross

We introduce a property of geodesic metric spaces, called the road trip property, that generalizes hyperbolic and convex metric spaces. This property is shown to be invariant under quasi-isometry. Thus, it leads to a geometric property of finitely generated groups, also called the road trip property. The main result is that groups with the road trip property are finitely presented and satisfy a quadratic isoperimetric inequality. Examples of groups with the road trip property include hyperbolic, semihyperbolic, automatic and CAT(0) groups. DOI: 10.1142/S0218196712500506

Structural, Optical And Electrical Properties Of Europium Picrate Tetraethylene Glycol Complex As Emissive Material For Oled, Wan Haliza Abd Majid

Wan Haliza binti Abd Majid

A new europium complex [Eu(Pic) 2(H 2O)(EO4)](Pic) ·0.75H 2O was synthesized and used as the emission material for the single layer device structure of ITO/EO4EuPic/Al, using a spin-coating technique. Study on the optical properties of the [Eu(Pic) 2(H 2O)(EO4)](Pic)·0.75H 2O complex where EO4=tetraethylene glycol and Pic=picrate anion, had to be undertaken before being applicable to the study of an organic light emitting diode (OLED). The electrical property of an OLED using currentvoltage (IV) measurement was also studied. In complex, the Eu(III) ion was coordinated with the EO4 ligand as a pentadentate mode, one water molecule, and with two Pic anions …

Synthesis, Magnetic Properties And X-Ray Analysis Of Zn0.97x0.03o Nanoparticles (X = Mn, Ni, And Co) Using Scherrer And Size-Strain Plot Methods, Wan Haliza Abd Majid

Wan Haliza binti Abd Majid

Un-doped and doped ZnO nanoparticles (Zn0.97X0.03O-NPs, X = Mn, Co, and Ni) were synthesized from a metal acetate precursor and acetic acid by a modified sol gel combustion method. The compounds were synthesized at calcination temperatures of 650 degrees C for 1 h. The synthesized un-doped/doped ZnO-NPs were characterized by X-ray diffraction analysis (XRD) and high-magnification transmission electron microscopy (TEM). The XRD results revealed that the sample product was crystalline with a hexagonal wurtzite phase. The TEM showed ZnO-NPs nearly spherical shapes and a non-uniform shape for doped ZnO-NPs. The crystalline development in the ZnO-NPs was investigated by X-ray peak …

An Introduction To Item Response Theory For Health Behavior Researchers, Russell Warne

Russell T Warne

OBJECTIVE:

To introduce item response theory (IRT) to health behavior researchers by contrasting it with classical test theory and providing an example of IRT in health behavior.

METHOD:

Demonstrate IRT by fitting the 2PL model to substance-use survey data from the Adolescent Health Risk Behavior questionnaire (n=1343 adolescents).

RESULTS:

An IRT 2PL model can produce viable substance use scores that differentiate different levels of substance use, resulting in improved precision and specificity at the respondent level.

CONCLUSION:

IRT is a viable option for health researchers who want to produce high-quality scores for unidimensional constructs. The results from our example-although not …

The Effects Of Land Sparing And Wildlife-Friendly Practices On Grassland Bird Abundance Within Organic Farmlands, John Quinn

John E Quinn

No abstract provided.

Vertical Distribution Of Grain Size For Wind Blown Sand, Eugene Farrell, Douglas Sherman, Jean Ellis, Bailiang Li

Jean Taylor Ellis

No abstract provided.

Hyperfine Structure In The Electronic Spectrum Of Tas, Andrew Bendelsmith, Keith Kuwata, Thomas Varberg

Keith Kuwata

No abstract provided.

Characterization Of A Bivalent, Smac-Based Peptide That Features Sequences Specific To Both The Bir2 And Bir3 Domains Of The X-Linked Inhibitor Of Apoptosis Protein, K. Speer, C. Cosimini, Kathryn Splan

Kathryn E. Splan

No abstract provided.