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Provis D.,Cardno | Provis D.,Swinburne University of Technology
Australian Coasts and Ports 2015 Conference | Year: 2015

Waves have been observed in Port Phillip Heads propagating at right angles to the direction of the dominant swell which comes from around the south west. These waves have the same period as the incoming swell. Analysis of radar images (WaMoS) shows that the secondary waves only exist in a relatively confined area. Examination of directional wave spectra from bottom-mounted acoustic gauges also demonstrates a localised area of occurrence. Analysis of the directional spectra show clear dual peaks at the same frequency but different directions, but only at specific sites. A numerical model (SWAN) has been used to investigate the location of the reflective area and the mechanism of reflection. The directional spectra from the model can be compared with those from the measured data. The most likely explanation is that the incoming swell is being reflected off a section of the wall of the canyon, the Entrance Deep, which runs through Port Phillip Heads. This phenomenon occurs through "total internal reflection" as the swell approaches the southern end of the canyon at greater than the critical angle for such reflection.


Veldema A.,Cardno | Swan R.,Cardno
The Art and Science of Water - 36th Hydrology and Water Resources Symposium, HWRS 2015 | Year: 2015

Planning control layers are key outputs of flood studies for Authorities. Implementation of appropriate planning controls represents one of the most cost effective measures to reduce flood risks. Authorities use planning layers to support decisions as to which types of developments should be permitted, and the building controls which should be imposed. The Authority's perception of flood risk should be reflected in these layers. This paper examines methods to develop cohesive planning layers including the application of various exclusion criteria such as hydraulic (depth, velocity x depth), area and proximity to drainage assets. © 2015, Engineers Australia. All rights reserved.


Rahman A.,Griffith University | Chattopadhyay G.,Cardno | Hossain M.J.,Griffith University
IEEE Transactions on Power Delivery | Year: 2016

Timber poles are widely used for distributing electricity in rural areas, mainly in developing countries. The improved reliability of timber poles is extremely important as the breakdown or failure of any one of these poles can result in millions of dollars in lost revenue and restoration costs. The losses can include production loss, loss of property, or even loss of life. The reliability of such poles depends on a complex combination of age, usage, durability of timber, environmental factors influencing the deterioration process, and most important, maintenance actions carried out through the lifecycle of the poles. This paper focuses on developing an optimal maintenance model that predominantly captures the inground decay of timber poles, and on developing a mechanism for measuring these factors. The developed maintenance model is then illustrated with numerical examples. Analysis of failure data shows that most of the failures of timber poles are due to a decrease in timber strength and peripheral dimensions at or below ground level. The results from this research could be useful for maintenance and replacement decisions regarding inground timber components used in the utility, construction, railway, and transportation sectors. © 1986-2012 IEEE.


Parsons G.R.,University of Delaware | Myers K.,Cardno
Ecological Economics | Year: 2016

A yes-response function in a contingent valuation study is said to have fat tails if it has a high and slowly declining yes-response rate at high bid levels. Truncated bids refer to the practice of dropping high bid offers before a yes-response rate of near zero is reached. This is a common practice in contingent valuation. We explore the extent and implications of fat tails and truncated bids in a study of an endangered shorebird species. We find, among other things, that mean willingness to pay is quite sensitive to the highest bid offered – so much so that the choice of highest bid nearly dictates outcomes. © 2016 Elsevier B.V.


Branson P.,Cardno | Garcia-Webb J.,Cardno
Australian Coasts and Ports 2015 Conference | Year: 2015

The Port Mandurah Canal Estate (Port Mandurah) enables its residents to enjoy water frontage with private jetty and boat mooring facilities. The northern entrance to Port Mandurah is situated on the entrance channel to the larger Peel Harvey Estuary system. Sedimentation of the Peel Harvey Estuary entrance has been an on-going issue for decades, predating the construction of the estate, and this has had flow on effects for the management of the Port Mandurah canals. Due to the cost and required frequency of maintenance dredging, the City of Mandurah (the City) is exploring options for improved management; this study assessed the performance of three possible mitigation measures for this ongoing issue. Sediment transport in the proximity of the Port Mandurah entrance is predominantly driven by tidal currents flowing into and out of the Peel Harvey Estuary carrying sediment bypassing the entrance. This process is possibly supplemented by sediment from offshore areas transported onshore during storms. These processes are responsible for the formation of a large sandbank ('Fairbridge Bank') within the Peel Harvey Estuary channel, and the northern entrance to Port Mandurah is situated adjacent to this sand bank. For this study, a hydrodynamic and sediment transport model for the Peel Harvey Estuary entrance channel and Port Mandurah canals was developed using Delft3D. Measured time series of currents and water levels were used to force the model; the model was successfully calibrated and was verified against the changes in bed elevation recorded by hydrographic surveys. The use of measured data allowed the model to be forced by a range of larger scale hydrodynamic processes that are costly and difficult to resolve with a larger nested grid approach. In consultation with the City, three siltation mitigation options were identified for testing against the control scenario: a training wall, a sediment trap with maintenance dredging, and channel realignment. Overall the sediment trap option performed best of the three tested: after 5 years the channel maintained a navigable depth, and average sedimentation was halved compared to the present situation. The outcomes of the study assisted the City in identifying options for further detailed analysis and design.


Branson P.,Cardno
Australian Coasts and Ports 2015 Conference | Year: 2015

Quinns Beach is situated within the City of Wanneroo on the south western Australian coast, approximately 40km north of Perth. The beach is fronted by a series of three limestone barrier reefs, which in contrast to coral reefs, are highly perforated resulting in a strongly modified nearshore wave climate that is responsible for the undulating planform character of the beaches in the City of Wanneroo; with numerous salients and cuspate forelands. Quinns Beach is situated on one such large cuspate foreland and has been experiencing ongoing erosion since at least the 1940's. Despite several engineering interventions over the past 30 years erosion is continuing at Quinns Beach. The present best estimate is that the 4 km length of beach has an average annual sediment deficit of approximately 20,000 m3. From an engineering perspective, Quinns Beach presents a challenging problem due to the importance of both longshore and cross shore transport at both seasonal and individual storm timescales. This, combined with existing coastal structures, results in a particular sensitivity to antecedent conditions that causes the locations of erosion to change between storms and seasons. In an effort to better understand the sediment transport pathways and support the assessment of options to improve management of the erosion issue, the XBeach model was set-up and calibrated to observed nearshore currents and morphological changes for a storm in September 2014. The extensive reefs (the furthest located 5km offshore) presented a significant challenge for developing a model domain that successfully resolved beach morphological changes around coastal structures and had sufficient spatial extent to suitably capture important areas of wind and wave set-up on reefs that drive the nearshore circulation. Modelling this complex environment provides important lessons for future coastal engineering on coasts with fringing reefs more generally.


Wood D.,Cardno | Veldema A.,Cardno
The Art and Science of Water - 36th Hydrology and Water Resources Symposium, HWRS 2015 | Year: 2015

The impact of rainwater tanks implemented at the individual property scale has recently become a topic of discussion when developing flood mitigation strategies. Systems of this nature are desirable as they may provide benefits to the community outside times of extreme rainfall and reduce the impact of flooding at the wider catchment scale in times of extreme rainfall. This paper describes a method used to quantify the benefits of a system of this nature in a gauged urban catchment. A hydraulic model has been calibrated to flows estimated via a flood frequency assessment for a range of AEP events. This model is then modified to assess a range of different storage tank scenarios, enabling a discussion on the impacts of the rainwater tanks on key hydraulic criteria, such as flow rate, volume, time to peak, depth of flooding, duration of inundation and critical duration to be analysed. The assessment method also includes consideration of the water reuse made available by the tanks, discussing the limitations of a dual purpose system and estimating the additional storage required to make the system feasible from a water reuse perspective. © 2015, Engineers Australia. All rights reserved.


Gray C.A.,WildFish Research | Barnes L.M.,Cardno
Journal of Applied Ichthyology | Year: 2015

The dusky flathead (Platycephalus fuscus) is an important teleost harvested by recreational and commercial fishers throughout its endemic distribution along eastern Australia. This study indicates that the species has an extended spawning period throughout the austral summer, with females in spawning condition occurring in lower estuarine and coastal waters. Total length (L50) and age (A50) at which 50% (±1 SE) of the population was mature was 31.72 (±1.08) cm TL and 1.22 (±0.44) years for males and 56.75 (±0.60) cm TL and 4.55 (±0.13) years for females. The von Bertalanffy growth parameters differed significantly between sexes; females grew faster and attained a greater maximum TL and age than males. The largest female was 98.5 cm TL (7.5 kg), and the oldest 16 years, whereas the largest male was 61.5 cm TL (1.58 kg) and 11 years of age. A tag-and-release study identified the exchange of sub-adult and mature-sized individuals among estuaries. Determinations of length-based management regulations for the species are compounded by the large gender-based differences in growth and length-at-maturity. Current minimum legal lengths of 30-40 cm TL protect approximately 3-9% of the female spawning population. Alternative management options, including harvest slot sizes, need to be investigated and tested. © 2015 Blackwell Verlag GmbH.


News Article | February 16, 2017
Site: www.marketwired.com

VizExplorer® technology will integrate with VMware IoT solutions to provide industry-specific IoT management, security and analytics, starting with healthcare PALO ALTO, CA--(Marketwired - February 16, 2017) - VMware, Inc. ( : VMW), a global leader in cloud infrastructure and business mobility, and VizExplorer, a leading provider of operational intelligence solutions, today announced a partnership to develop integrated IoT solutions. The partnership intends to enable customers to maximize value from their IoT use cases, in a timely and cost effective way, while managing, monitoring and securing all IoT edge systems and connected devices. The first expected offering from VizExplorer and VMware is a healthcare-specific solution that can help optimize device and patient operations in hospitals. By bringing together VizExplorer's advanced analytics and visualization solutions and VMware's ability to manage, monitor and secure all IoT devices, hospitals should be much more able to manage, visualize and understand usage of hospital devices, their locations and the activities of patients and staff. VizExplorer and VMware started collaborating in the Fall of 2016 to deliver a custom healthcare IoT solution in trials, with the goal of using a single console on which the lab will be able to monitor and manage all its devices, lab equipment, medical staff and patients. In addition, the interface is designed to provide real-time analytics and reporting to monitor the productivity of medical staff and increase efficient use of medical equipment, resources and inventory. "I can see clear use cases for efficiency of treatments as well as patient safety using the VizExplorer and VMware real-time locational system (RTLS) and supporting technologies. A key component to making this initiative successful is the ability to execute in a medical environment with customized infrastructure management tools," said Todd Pawlicki, Ph.D. and Fellow of the American Association of Physicists and Medicine. "The combination of VMware IoT and VizExplorer Analytics will help the healthcare industry better track devices and patients to ultimately respond faster and more efficiently to their needs. Healthcare is just the first of many industries we hope to impact," said Mimi Spier, vice president and Head of Business Development, GTM Strategy, Marketing for IoT, VMware. "We are thrilled to partner with VMware and push the boundaries of what VizExplorer's proven technology can do. The opportunity to provide a solution for the healthcare industry proves that our technology extends well beyond the gaming, sports and manufacturing industries we currently serve," said Andrew Cardno, VizExplorer CTO and Founder. While healthcare is the partnership's first target, the integrated IoT platform solution has the potential to be able to address a variety of large-scale challenges across multiple industries. The partnership between VMware and VizExplorer will be showcased at HIMSS17 Conference in Orlando, Florida in VMware booth #3661. VizExplorer offers Operational Intelligence (OI) solutions to the casino, sports and entertainment, and manufacturing industries. The next generation in data-driven decision-making, OI delivers on the promise of business intelligence by letting businesses analyze live, fast-changing data and take immediate action using a single toolset. VizExplorer's applications and tools enable enterprises to address smart space and profit optimization, marketing campaign management, CRM and customer development, dispatch and service management, and customer service automation. VizExplorer is led by a team of distinguished OI experts, seasoned industry veterans and world class software developers devoted to building the very best products backed by extraordinary support. VizExplorer is headquartered in San Diego, with offices in Las Vegas and Wellington, New Zealand. www.vizexplorer.com. VMware, a global leader in cloud infrastructure and business mobility, helps customers accelerate their digital transformation. VMware enables enterprises to master a software-defined approach to business and IT with VMware Cross-Cloud Architecture™ and solutions for the data center, mobility, and security. With 2016 revenue of $7.09 billion, VMware is headquartered in Palo Alto, CA and has over 500,000 customers and 75,000 partners worldwide. VMware and Cross-Cloud Architecture are registered trademarks or trademarks of VMware, Inc. in the United States and other jurisdictions. All other marks and names mentioned herein may be trademarks of their respective companies.


News Article | December 14, 2016
Site: www.marketwired.com

SEATTLE, WASHINGTON--(Marketwired - Dec. 13, 2016) - SLR Consulting, a global environmental and advisory firm, has appointed several key executives to support the growth of its international operations. Rick Smith has joined in a new role as Chief Operating Officer, North America, and will enhance the leadership structure in SLR's businesses in the United States and Canada. Mr. Smith is based in Houston, Texas and has extensive experience in leading EHS businesses. He was formerly ERM's Southern Division Managing Director (US) and a member of the Global Senior Leadership Team. To further support the growth of the North America operations, Kent Miller has also joined SLR in Houston as its US Oil and Gas Business Sector lead. He will support ongoing investments in oil and gas initiatives at the domestic and global level. Mr. Miller was previously with ERM in Houston. SLR is also pleased to announce that in its Asia Pacific region, Paul Gardiner has recently been appointed as Regional Manager based in Brisbane, Australia. Mr. Gardiner was formerly General Manager for Cardno's Asia Pacific Region and joins SLR to lead its operations throughout Asia, Australia and New Zealand. At the Group level, Diane Buchanan has joined SLR as its Chief Financial Officer and will be working with the regional teams to provide leadership across the business on financial and commercial matters. She is located in SLR's office located near Oxford, U.K. office. SLR Chief Executive Officer, Neil Penhall, commented, "I would like to welcome these executives to SLR. We have an ongoing and exciting growth strategy for SLR over the coming years, and attracting new leaders of such calibre to the SLR team will further enhance our ability to bring this strategy to life." SLR Consulting (SLR) is a UK based environmental and advisory consultancy, with its US operations based near Seattle, Washington and Canadian operations based in Vancouver, B.C. SLR has over 1200 employees based in 70 offices around the world with over 350 employees in North America. SLR is a leading provider of consulting services to clients in the oil & gas, mining, industry, infrastructure, power and built environment business sectors.

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