Search results for: Ross Williams

Items from 1 to 20 out of 74 results

article

From text to map: a system dynamics bot for constructing causal loop diagrams

Niyousha Hosseinichimeh, Aritra Majumdar, Ross Williams, Navid Ghaffarzadegan

System Dynamics Review > 40 > 3 > n/a - n/a

We introduce and test the System Dynamics Bot, a computer program leveraging a large language model to automate the creation of causal loop diagrams from textual data. To evaluate its performance, we ensembled two distinct databases. The first dataset includes 20 causal loop diagrams and associated texts sourced from the system dynamics literature. The second dataset comprises responses from 30 participants...

article

Editors’ Report 2023

Ross Williams

Australian Economic Review > 57 > 2 > 206 - 207

article

Australian Pioneers in Health Economics: The Origins of Medicare

Ross Williams

Australian Economic Review > 57 > 2 > 145 - 148

Medicare is now 40 years old, but the blueprint was developed in the 1960s by John Deeble and Richard Scotton working at the Melbourne Institute. Starting with a desire to understand the Australian health system of the early1960s, Deeble and Scotton collected much information and data on the provision of health services and their financing. This led them to be highly critical of the health system and, in response to a challenge from the Labor leader, Gough Whitlam, the development of a new system which we now know as Medicare...

article

Introduction

Ross Williams

Australian Economic Review > 53 > 4 > 554 - 556

article

Computational Modelling of Inertia Friction Welding

Ross Williams, Daniele Barbera, Mark Docherty, Simon Bray, more

PAMM > 19 > 1 > n/a - n/a

This study details the development and validation of a finite element methodology to robustly simulate the inertia friction welding (IFW) process. There are many difficulties involved in modelling IFW. These include the short and violent process to complete a weld, as well as the challenges in obtaining experimental data throughout the process to complement, validate and inform the modelling effort...

article

Introduction: Australian Higher Education as an Industry

Ross Williams

Australian Economic Review > 52 > 2 > 212 - 216

This article provides an introduction to the contributed articles in the Forum through an overview of the structure of higher education in Australia.

article

New measurement of the ²³⁸U decay constant with inductively coupled plasma mass spectrometry

Tashi Parsons-Davis, Josh Wimpenny, C. Brenhin Keller, Keenan Thomas, more

Journal of Radioanalytical and Nuclear Chemistry > 2018 > 318 > 1 > 711-721

The ²³⁸U decay constant (λ_U-238) is fundamental to radioisotope-based chronometry in the Earth and planetary sciences, yet only a single published λ_U-238 value (Jaffey et al. in Phys Rev C 4(5):1889–1906, 1971) is widely applied. We have determined λ_U-238 via the novel approach of measuring of ²³⁴Th ingrowth in high-purity ²³⁸U solutions, using isotope dilution mass spectrometry (ID-MS). The ²³⁴Th...

article

Editors' Report 2017

Ross Williams, Ian McDonald, Chris Ryan

Australian Economic Review > 51 > 2 > 301 - 302

article

Introduction

Ross Williams

Australian Economic Review > 51 > 2 > 244 - 246

article

The application of radiochronometry during the 4th collaborative materials exercise of the nuclear forensics international technical working group (ITWG)

Michael J. Kristo, Ross Williams, Amy M. Gaffney, Theresa M. Kayzar-Boggs, more

Journal of Radioanalytical and Nuclear Chemistry > 2018 > 315 > 2 > 425-434

In a recent international exercise, 10 international nuclear forensics laboratories successfully performed radiochronometry on three low enriched uranium oxide samples, providing 12 analytical results using three different parent-daughter pairs serving as independent chronometers. The vast majority of the results were consistent with one another and consistent with the known processing history of...

article

The prognostic and predictive value of vascular response parameters measured by dynamic contrast-enhanced-CT, -MRI and -US in patients with metastatic renal cell carcinoma receiving sunitinib

John M. Hudson, Colleen Bailey, Mostafa Atri, Greg Stanisz, more

European Radiology > 2018 > 28 > 6 > 2281-2290

Objectives To identify dynamic contrast-enhanced (DCE) imaging parameters from MRI, CT and US that are prognostic and predictive in patients with metastatic renal cell cancer (mRCC) receiving sunitinib. Methods Thirty-four patients were monitored by DCE imaging on day 0 and 14 of the first course of sunitinib treatment. Additional scans were performed with DCE-US only (day 7 or 28 and 2 weeks after...

article

Improved Contrast-Enhanced Power Doppler Using a Coherence-Based Estimator

Charles Tremblay-Darveau, Avinoam Bar-Zion, Ross Williams, Paul S. Sheeran, more

IEEE Transactions on Medical Imaging > 2017 > 36 > 9 > 1901 - 1911

While plane-wave imaging can improve the performance of power Doppler by enabling much longer ensembles than systems using focused beams, the long-ensemble averaging of the zero-lag autocorrelation R(0) estimates does not directly decrease the mean noise level, but only decreases its variance. Spatial variation of the noise due to the time-gain compensation and the received beamforming aperture ultimately...

article

In Vivo Validation of Volume Flow Measurements of Pulsatile Flow Using a Clinical Ultrasound System and Matrix Array Transducer

John M. Hudson, Ross Williams, Laurent Milot, Qifeng Wei, more

Ultrasound in Medicine & Biology > 2017 > 43 > 3 > 579-585

The goal of this study was to evaluate the accuracy of a non-invasive C-plane Doppler estimation of pulsatile blood flow in the lower abdominal vessels of a porcine model. Doppler ultrasound measurements from a matrix array transducer system were compared with invasive volume flow measurements made on the same vessels with a surgically implanted ultrasonic transit-time flow probe. For volume flow...

article

More Than Bubbles: Creating Phase-Shift Droplets from Commercially Available Ultrasound Contrast Agents

Paul S. Sheeran, Kimoon Yoo, Ross Williams, Melissa Yin, more

Ultrasound in Medicine & Biology > 2017 > 43 > 2 > 531-540

Phase-shift perfluorocarbon droplets have been investigated for over 20 years as pre-clinical ultrasound contrast agents with distinctive advantages in imaging and therapy. A number of formulation strategies exist, each with inherent advantages and limitations. In this note, we demonstrate a unique opportunity: that phase-shift droplets can be generated directly from commercially available microbubbles...

article

Methods of Generating Submicrometer Phase-Shift Perfluorocarbon Droplets for Applications in Medical Ultrasonography

Paul S. Sheeran, Naomi Matsuura, Mark A. Borden, Ross Williams, more

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control > 2017 > 64 > 1 > 252 - 263

Continued advances in the field of ultrasound and ultrasound contrast agents have created new approaches to imaging and medical intervention. Phase-shift perfluorocarbon droplets, which can be vaporized by ultrasound energy to transition from the liquid to the vapor state, are one of the most highly researched alternatives to clinical ultrasound contrast agents (i.e., microbubbles). In this paper,...

article

Controlled bone formation using ultrasound-triggered release of BMP-2 from liposomes

Gazelle J. Crasto, Norbert Kartner, Nikita Reznik, Michael V. Spatafora, more

Journal of Controlled Release > 2016 > 243 > C > 99-108

Recombinant human bone morphogenetic protein 2 (rhBMP-2) is used clinically to enhance implant-mediated bone regeneration. However, there are risks associated with the high rhBMP-2 dose that is required in the implant to mitigate diffusional loss over the therapeutic timespan. On-demand, localized control over delivery of rhBMP-2, days after implantation, would therefore be an attractive solution...

article

Concepts and Tradeoffs in Velocity Estimation With Plane-Wave Contrast-Enhanced Doppler

Charles Tremblay-Darveau, Ross Williams, Paul S. Sheeran, Laurent Milot, more

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control > 2016 > 63 > 11 > 1890 - 1905

While long Doppler ensembles are, in principle, beneficial for velocity estimates, short acoustic pulses must be used in microbubble contrast-enhanced (CE) Doppler to mitigate microbubble destruction. This introduces inherent tradeoffs in velocity estimates with autocorrelators, which are studied here. A model of the autocorrelation function adapted to the microbubble Doppler signal accounting for...

article

Evaluating the Contribution of Higher Education to Australia's Research Performance

Ross Williams

Australian Economic Review > 49 > 2 > 174 - 183

The Australian Government has signalled what it sees as the need for all sectors of the economy to be more innovative. Reviews have been commissioned that indicate how this agenda might be accomplished, including the development of greater links between higher education and industry. In this article, Australia's research expenditure by sector is compared with nine other advanced economies. The funding...

article

Impact of Acquisition Method and Region of Interest Placement on Inter-observer Agreement and Measurement of Tumor Response to Targeted Therapy Using Dynamic Contrast-Enhanced Ultrasound

Mostafa Atri, John M. Hudson, Mehrdad Sinaei, Ross Williams, more

Ultrasound in Medicine & Biology > 2016 > 42 > 3 > 763-768

This study evaluated the impact of different acquisition methods, user-directed region of interest placement and post-processing steps on the quantification of dynamic contrast-enhanced ultrasound measurements of blood volume in 29 patients with renal cancer, pre- and post-treatment. Specifically, we compared tumor quantification using multiple planes versus a single plane, breathhold versus free...

article

Image-Guided Ultrasound Characterization of Volatile Sub-Micron Phase-Shift Droplets in the 20–40 MHz Frequency Range

Paul S. Sheeran, Yasaman Daghighi, Kimoon Yoo, Ross Williams, more

Ultrasound in Medicine & Biology > 2016 > 42 > 3 > 795-807

Phase-shift perfluorocarbon droplets are designed to convert from the liquid to the gas state by the external application of acoustic or optical energy. Although droplet vaporization has been investigated extensively at ultrasonic frequencies between 1 and 10 MHz, few studies have characterized performance at the higher frequencies commonly used in small animal imaging. In this study, we use standard...

Publication date

Last 3 months (1)
Last year (3)
Last 3 years (3)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

Publication type

article (65)
book (9)

Keywords

ULTRASONIC IMAGING (10)
ULTRASOUND CONTRAST AGENTS (10)
MICROBUBBLES (9)
PERFLUOROCARBON DROPLETS (9)
IMAGING (8)
ACOUSTICS (7)
DOPPLER EFFECT (6)
DROPLET VAPORIZATION (5)
CANCER (4)
ACOUSTIC DROPLET VAPORIZATION (3)
BANDWIDTH (3)
CONTRAST AGENT (3)
CORRELATION (3)
FLUORESCENCE (3)
NONLINEAR IMAGING (3)
PLANE-WAVE ULTRASOUND (3)
ULTRASOUND (3)
AMPLITUDE MODULATION (2)
ATTENUATION (2)
BIOMEDICAL ULTRASONICS (2)
BLOOD (2)
BLOOD PERFUSION IMAGING (2)
CLUTTER (2)
CONTRAST IMAGING (2)
DEFINITY (2)
DROPS (2)
HIGH-FREQUENCY ULTRASOUND (2)
INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY (2)
LIQUIDS (2)
MICROSCOPY (2)
OPTICAL IMAGING (2)
PERFLUOROCARBON (2)
PHASE-SHIFT DROPLETS (2)
QUANTUM DOTS (2)
RADIO FREQUENCY (2)
RADIOCHRONOMETRY (2)
SUNITINIB (2)
ULTRASOUND CONTRAST (2)
USA COUNCILS (2)
ACOUSTIC CHARACTERIZATION (1)
ACOUSTIC SPECTROSCOPY (1)
ALPHA SPECTROMETRY (1)
AMPLITUDE MODULATION NONLINEAR DOPPLER (1)
ANALYTICAL BLANK (1)
ANTI-ANGIOGENIC THERAPY (1)
ANTI-INFLAMMATORY THERAPY (1)
ANTIBIOTIC RESISTANCE (1)
AUSTRALIAN UNIVERSITIES (1)
AUTOCORRELATORS (1)
B-SCAN (1)
BENCHMARKING (1)
BENGHAZI (1)
BIOMEDICAL IMAGING (1)
BIOMEDICAL MATERIALS (1)
BLOOD FLOW (1)
BLOOD PRESSURE (1)
BLOOD VELOCITY (1)
BLOOD VESSELS (1)
BRACKISH WATER (1)
BUBBLES (1)
CANCER DETECTION (1)
CARCINOMA, RENAL CELL (1)
CAVITATION (1)
CD63 (1)
CELL MEMBRANE PERMEABILISATION (1)
COALESCENCE (1)
COHERENCE (1)
COLOR DOPPLER (1)
COLOUR FLOW IMAGING (1)
CONNECTIVITY (1)
CONTRAST ENHANCED ULTRASOUND (1)
CONTROL (1)
CONTROLLED NANOPARTICLE RELEASE (1)
DECAY CONSTANT (1)
DECORRELATION (1)
DESALINATION (1)
DIFFUSIBLE ULTRASOUND CONTRAST AGENT (1)
DISRUPTION-REPLENISHMENT (1)
DISTILLATION (1)
DOPPLER (1)
DROPLET CONVERSION (1)
DRUG DELIVERY (1)
DRUG DELIVEY (1)
ECONOMIC ANALYSIS (1)
ELECTROCARDIOGRAM (1)
ELECTRODIALYSIS (1)
ELECTRON TUBES (1)
ENDOTHELIAL CELLS (1)
ENVIRONMENTAL (1)
EXTRAVASCULAR DIAGNOSIS (1)
FLY ASH (1)
FOCUSED TRANSDUCER (1)
FOCUSING (1)
FORENSICS (1)
FREQUENCY 1 MHZ (1)
FREQUENCY 18 MHZ (1)
FREQUENCY 7.5 MHZ (1)
GAMMA SPECTROMETRY (1)
GEOPOLYMER (1)
GEOTHERMAL ENERGY (1)
more

Data set

Elsevier (30)
Wiley (20)
ieee (15)
Springer (7)
ACS (2)

Journal

Australian Economic Review (18)
Ultrasound in Medicine & Biology (16)
Forensic Science International: Genetics (4)
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control (4)
Higher Education (3)
IEEE Transactions on Medical Imaging (2)
Journal of Radioanalytical and Nuclear Chemistry (2)
ACS Nano (1)
Applied Radiation and Isotopes (1)
Current Sustainable/Renewable Energy Reports (1)
European Journal of Radiology (1)
European Radiology (1)
International Journal of Antimicrobial Agents (1)
Journal of Controlled Release (1)
Langmuir (1)
Materials Science & Engineering A (1)
NeuroImage (1)
PAMM (1)
Seminars in Cell and Developmental Biology (1)
System Dynamics Review (1)
The Lancet (1)
Ultrasonics (1)
Urologic Oncology: Seminars and Original Investigations (1)
more

INFONA - science communication portal

Search results for: Ross Williams

From text to map: a system dynamics bot for constructing causal loop diagrams

Editors’ Report 2023

Australian Pioneers in Health Economics: The Origins of Medicare

Introduction

Computational Modelling of Inertia Friction Welding

Introduction: Australian Higher Education as an Industry

New measurement of the ²³⁸U decay constant with inductively coupled plasma mass spectrometry

Editors' Report 2017

Introduction

The application of radiochronometry during the 4th collaborative materials exercise of the nuclear forensics international technical working group (ITWG)

The prognostic and predictive value of vascular response parameters measured by dynamic contrast-enhanced-CT, -MRI and -US in patients with metastatic renal cell carcinoma receiving sunitinib

Improved Contrast-Enhanced Power Doppler Using a Coherence-Based Estimator

In Vivo Validation of Volume Flow Measurements of Pulsatile Flow Using a Clinical Ultrasound System and Matrix Array Transducer

More Than Bubbles: Creating Phase-Shift Droplets from Commercially Available Ultrasound Contrast Agents

Methods of Generating Submicrometer Phase-Shift Perfluorocarbon Droplets for Applications in Medical Ultrasonography

Controlled bone formation using ultrasound-triggered release of BMP-2 from liposomes

Concepts and Tradeoffs in Velocity Estimation With Plane-Wave Contrast-Enhanced Doppler

Evaluating the Contribution of Higher Education to Australia's Research Performance

Impact of Acquisition Method and Region of Interest Placement on Inter-observer Agreement and Measurement of Tumor Response to Targeted Therapy Using Dynamic Contrast-Enhanced Ultrasound

Image-Guided Ultrasound Characterization of Volatile Sub-Micron Phase-Shift Droplets in the 20–40 MHz Frequency Range

Filter options

Publication date

Publication type

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Ross Williams

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options