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Research papers, University of Canterbury Library

The Canterbury Earthquake Sequence (CES), induced extensive damage in residential buildings and led to over NZ$40 billion in total economic losses. Due to the unique insurance setting in New Zealand, up to 80% of the financial losses were insured. Over the CES, the Earthquake Commission (EQC) received more than 412,000 insurance claims for residential buildings. The 4 September 2010 earthquake is the event for which most of the claims have been lodged with more than 138,000 residential claims for this event only. This research project uses EQC claim database to develop a seismic loss prediction model for residential buildings in Christchurch. It uses machine learning to create a procedure capable of highlighting critical features that affected the most buildings loss. A future study of those features enables the generation of insights that can be used by various stakeholders, for example, to better understand the influence of a structural system on the building loss or to select appropriate risk mitigation measures. Previous to the training of the machine learning model, the claim dataset was supplemented with additional data sourced from private and open access databases giving complementary information related to the building characteristics, seismic demand, liquefaction occurrence and soil conditions. This poster presents results of a machine learning model trained on a merged dataset using residential claims from the 4 September 2010.

Research papers, University of Canterbury Library

After a high-intensity seismic event, inspections of structural damages need to be carried out as soon as possible in order to optimize the emergency management, as well as improving the recovery time. In the current practice, damage inspections are performed by an experienced engineer, who physically inspect the structures. This way of doing not only requires a significant amount of time and high skilled human resources, but also raises the concern about the inspector’s safety. A promising alternative is represented using new technologies, such as drones and artificial intelligence, which can perform part of the damage classification task. In fact, drones can safely access high hazard components of the structures: for instance, bridge piers or abutments, and perform the reconnaissance by using highresolution cameras. Furthermore, images can be automatically processed by machine learning algorithms, and damages detected. In this paper, the possibility of applying such technologies for inspecting New Zealand bridges is explored. Firstly, a machine-learning model for damage detection by performing image analysis is presented. Specifically, the algorithm was trained to recognize cracks in concrete members. A sensitivity analysis was carried out to evaluate the algorithm accuracy by using database images. Depending on the confidence level desired,i.e. by allowing a manual classification where the alghortim confidence is below a specific tolerance, the accuracy was found reaching up to 84.7%. In the second part, the model is applied to detect the damage observed on the Anzac Bridge (GPS coordinates -43.500865, 172.701138) in Christchurch by performing a drone reconnaissance. Reults show that the accuracy of the damage detection was equal to 88% and 63% for cracking and spalling, respectively.

Audio, Radio New Zealand

Rt Hon WINSTON PETERS to the Prime Minister: Does he stand by his statement that "the Government has actively supported the filming of the Hobbit movies in New Zealand because of the enormous economic benefits they are bringing to the country, including the creation of around 3,000 jobs"? DAVID SHEARER to the Prime Minister: Does he stand by all the statements made in his prime ministerial speeches and in his Address in Reply speeches? TODD McCLAY to the Minister of Finance: What will be the focus of the Government's economic programme in 2013? METIRIA TUREI to the Prime Minister: Does he stand by his statement that "I am keen to see New Zealanders be able to afford to buy a home", given that the home ownership rate has continued to decline under his watch and home buying is becoming less affordable? Hon DAVID PARKER to the Minister of Finance: Is he aware that anticipated Core Crown Revenue for the period 2012-2016 decreased by $13.2 billion between the October 2011 PREFU and the December 2012 HYEFU; if so, why has the Government lost $13.2 billion in projected revenue in little over a year? COLIN KING to the Minister for Tertiary Education, Skills and Employment: What recent announcements has the Government made about boosting the number of people being trained in apprenticeships? JACINDA ARDERN to the Prime Minister: Does he stand by his statement "I am deeply concerned about every child in New Zealand who is in poverty"? Dr RUSSEL NORMAN to the Prime Minister: Why didn't he mention climate change yesterday when he outlined his Government's priorities for the year in his statement to Parliament? Hon ANNETTE KING to the Prime Minister: Following his decision to appoint a new Minister of Housing, what new policies, if any, does he expect his new Minister to implement to address the growing housing affordability issues in New Zealand? NICKY WAGNER to the Minister responsible for the Earthquake Commission: What progress has been made in the repair of homes in Canterbury by the EQR Repair Programme? CHRIS HIPKINS to the Minister of State Services: What were the factors that contributed to the strained relations that resulted in the resignation of Lesley Longstone as Secretary of Education? JACQUI DEAN to the Minister of Corrections: What steps is the Government taking to improve prisoner employment training in New Zealand prisons?

Audio, Radio New Zealand

Questions to Ministers and lt;br / and gt; and lt;br / and gt; 1. Hon ANNETTE KING to the Prime Minister: Is he satisfied that all systems set up pursuant to commitments he has given to assist residents following the Christchurch earthquake are appropriate and working? and lt;br / and gt; and lt;br / and gt; 2. DAVID BENNETT to the Minister of Finance: What do this morning's Reserve Bank economic forecasts show? and lt;br / and gt; and lt;br / and gt; 3. Hon DAVID CUNLIFFE to the Minister of Finance: By what amount has the Reserve Bank lowered the official cash rate today, and what reason has the Bank given for this action? and lt;br / and gt; and lt;br / and gt; 4. GARETH HUGHES to the Minister of Finance: What will be the impact of the recent fuel price rise on the New Zealand economy, including impacts on GDP, consumer spending and the current account? and lt;br / and gt; and lt;br / and gt; 5. Hon DAVID PARKER to the Acting Minister for Economic Development: Has he been advised by the Prime Minister whether his appointment as Acting Minister for Economic Development is temporary or expected to carry on to the election? and lt;br / and gt; and lt;br / and gt; 6. KATRINA SHANKS to the Minister of Transport: What action is the Government taking to improve Wellington's train network? and lt;br / and gt; and lt;br / and gt; 7. Hon DAMIEN O'CONNOR to the Prime Minister: Can he assure the families of those killed in the Pike River Mine disaster that Government funding will be available for the recovery of bodies, given the mine is now in receiver's hands. and lt;br / and gt; and lt;br / and gt; 8. COLIN KING to the Minister of Civil Defence: Is the Government satisfied with the provision of replacement toilets for earthquake-affected Christchurch residents? and lt;br / and gt; and lt;br / and gt; 9. CAROL BEAUMONT to the Minister of Women's Affairs: Can she outline a significant improvement for women initiated by the current Government? and lt;br / and gt; and lt;br / and gt; 10. ALLAN PEACHEY to the Minister of Education: What provisions have been made to ensure continuity of early childhood education and schooling in the Christchurch region since the 22 February earthquake? and lt;br / and gt; and lt;br / and gt; 11. Hon TREVOR MALLARD to the Minister for Communications and Information Technology: What advice did he receive on any perceived conflict of interest before he took part in the Cabinet decision that led to the deferral of the requirement for MediaWorks to pay its frequency licence to the Crown? and lt;br / and gt; and lt;br / and gt; 12. KANWALJIT SINGH BAKSHI to the Minister of Internal Affairs: What reports has he received on the progress of urban search and rescue and firefighter teams working in Christchurch following the 22 February earthquake?