| publications-3781 |
article |
2009 |
Montgomery, Maggie and Montgomery, Maggie A. and Bartram, Jamie and Bartram, Jamie and Elimelech, Menachem and Elimelech, Menachem |
Increasing Functional Sustainability of Water and Sanitation Supplies in Rural Sub-Saharan Africa |
Environmental Engineering Science |
10.1089/ees.2008.0388 |
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Abstract Lack of universal access to water and sanitation results in well over a million preventable deaths each year, and in both the water and sanitation sectors, there is critical need for great... |
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| publications-3782 |
article |
1983 |
Plackett, R. L. and Plackett, R. L. |
Karl Pearson and the Chi-squared Test |
International Statistical Review |
10.2307/1402731 |
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Summary Pearson's paper of 1900 introduced what subsequently became known as the chi-squared test of goodness of fit. The terminology and allusions of 80 years ago create a barrier for the modern reader, who finds that the interpretation of Pearson's test procedure and the assessment of what he achieved are less than straightforward, notwithstanding the technical advances made since then. An attempt is made here to surmount these difficulties by exploring Pearson's relevant activities during the first decade of his statistical career, and by describing the work by his contemporaries and predecessors which seem to have influenced his approach to the problem. Not all the questions are answered, and others remain for further study. |
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| publications-3783 |
article |
2013 |
Gardiner, Paula and Gardiner, Paula and Hempstead, Megan and Hempstead, Megan and Ring, Lazlo and Ring, Lazlo and Bickmore, Timothy and Bickmore, Timothy W. and Yinusa-Nyahkoon, Leanne and Yinusa-Nyahkoon, Leanne and Tran, Hoanh and Tran, Huong H. and Paascheβ€Orlow, Michael K. and Paasche-Orlow, Michael K. and Damus, Karla and Damus, Karla and Jack, Brian W. and Jack, Brian W. and Jack, Brian |
Reaching women through health information technology: the Gabby preconception care system. |
American Journal of Health Promotion |
10.4278/ajhp.1200113-quan-18 |
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Abstract Purpose. The Centers for Disease Control and Prevention have endorsed the concept of preconception care (PCC). New tools must be developed to promote PCC. Design. Development and testing of a health information technology system to provide PCC. Setting. An urban safety net hospital and an urban university. Subjects. Community recruitment of 31 women in focus groups and 15 women participating in observed usability testing; 9 students recruited from the Office of Minority Health Preconception Peer Educators program participated in pilot testing for 2 months. Intervention. Online interactive animated character (β€_x009c_Gabbyβ€_x009d_) designed to identify and modify preconception risks. Measures. Qualitative transcripts, preconception risk assessment, server data for system usage, self-administered satisfaction surveys, and follow-up phone calls. Analysis. Descriptive statistics of subjects' demographics, satisfaction, PCC risks, and system usage. Transcripts coded using NVIVO. Results. Subjects (n = 24) reported ... |
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| publications-3784 |
article |
2013 |
Neemann, Jeff and Neemann, Jeff and Roberts, Dawn E. and Roberts, Dave and Kenel, Pam and Kenel, Pam and Chastainβ€Howley, Andrew and Chastain-Howley, Andrew and Stallard, Scott and Stallard, Scott |
Will Data Analytics Change the Way We Deliver Water |
Journal American Water Works Association |
10.5942/jawwa.2013.105.0163 |
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The growth of abundance and ubiquity of data are exponential. We are used to data coming from instruments; now, however, we experience data everywhere. Combine that with customer-use data through automated meter reading or advanced metering infrastructure and a better-informed public that provides real-time feedback with social media, and you get data overload. The question facing the industry is how to use the data it receives. |
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| publications-3785 |
article |
2006 |
Huang, HsiuΒ-Mei and Huang, Hsiu-Mei |
Do print and Web surveys provide the same results |
Computers in Human Behavior |
10.1016/j.chb.2004.09.012 |
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| publications-3786 |
article |
2000 |
Agthe, Donald E. and Agthe, D. E. and Billings, R. Bruce and Billings, R. B. and Haddad, B. M. |
DISCUSSION.: "Economic Incentives for Water Conservation on the Monterey Peninsula: The Market Proposal," by Brent M. Haddad |
Journal of The American Water Resources Association |
10.1111/j.1752-1688.2000.tb04318.x |
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JAWRA Journal of the American Water Resources AssociationVolume 36, Issue 4 p. 931-932 DISCUSSION1 β€_x009c_Economic Incentives for Water Conservation on the Monterey Peninsula: The Market Proposal,β€_x009d_ by Brent M. Haddad2 Donald E. Agthe, Donald E. Agthe Respectively, Economic Consultant, 2509 North Campbell Ave., PMB 133, Tucson, Arizona 85719; and Associate Professor, Department of Economics, McClelland Hall 401, University of Arizona, Tucson, Arizona 85721 (E-Mail/Billings: billings@bpa.arizona.edu).Search for more papers by this authorR. Bruce Billings, R. Bruce Billings Respectively, Economic Consultant, 2509 North Campbell Ave., PMB 133, Tucson, Arizona 85719; and Associate Professor, Department of Economics, McClelland Hall 401, University of Arizona, Tucson, Arizona 85721 (E-Mail/Billings: billings@bpa.arizona.edu).Search for more papers by this author Donald E. Agthe, Donald E. Agthe Respectively, Economic Consultant, 2509 North Campbell Ave., PMB 133, Tucson, Arizona 85719; and Associate Professor, Department of Economics, McClelland Hall 401, University of Arizona, Tucson, Arizona 85721 (E-Mail/Billings: billings@bpa.arizona.edu).Search for more papers by this authorR. Bruce Billings, R. Bruce Billings Respectively, Economic Consultant, 2509 North Campbell Ave., PMB 133, Tucson, Arizona 85719; and Associate Professor, Department of Economics, McClelland Hall 401, University of Arizona, Tucson, Arizona 85721 (E-Mail/Billings: billings@bpa.arizona.edu).Search for more papers by this author First published: 08 June 2007 https://doi.org/10.1111/j.1752-1688.2000.tb04318.xCitations: 3 1 Discussion No. 98131D of the Journal of the American Water Resources Association. 2 Paper No. 98131 of the Journal of the American Water Resources Association 36(1):1–15. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article.Citing Literature Volume36, Issue4August 2000Pages 931-932 RelatedInformation |
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| publications-3787 |
article |
1989 |
Germanopoulos, George and Germanopoulos, G and Jowitt, Pw and Jowitt, Pw |
LEAKAGE REDUCTION BY EXCESS PRESSURE MINIMIZATION IN A WATER SUPPLY NETWORK. |
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10.1680/iicep.1989.2003 |
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Keywords IMPERIAL COLLEGE, HERIOT WATT UNIVERSITY LEAKAGE, REDUCTION, EXCESS, PRESSURE, MINIMISATION, WATER SUPPLY, NETWORKS, METHODS, WATER, SUPPLY, CONTROL, OPTIMAL, VALVES, SETTING, HYDRAULIC, CHARACTERISTICS, FLOW, EQUATIONS, NODAL, CONTINUITY, LOSS, FUNCTIONS, EFFECT, OUTFLOW, CONSTRAINTS, NON LINEAR, OPERATIONAL, PROBLEMS, FORMULATION, LINEAR, THEORY, MODELS, ITERATIVE, LINEARISATION, SOLUTIONS, PROGRAMS, HEADS, TESTS, MATHEMATICS, ALGORITHMS... Show All |
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| publications-3788 |
article |
2009 |
Giustolisi, Orazio and Giustolisi, Orazio and Berardi, Luigi and Berardi, Luigi |
Prioritizing pipe replacement: from multiobjective genetic algorithms to operational decision support. |
Journal of Water Resources Planning and Management |
10.1061/(asce)0733-9496(2009)135:6(484) |
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Deterioration of water distribution systems and the optimal allocation of limited funds for their rehabilitation represent crucial challenges for water utility managers. Decision makers should be provided with a set of β€_x009c_informedβ€_x009d_ solutions to select the best rehabilitation plan with regard to available resources and management strategies. In a risk-based scenario, such an approach should result in an element-wise prioritization scheme based on individual pipe rehabilitation/replacement effectiveness. This manuscript describes a framework for devising a short-term decision support tool for pipe replacement. The approach allows for the introduction of economic, technical, and management rationales as separate objectives to produce a pipe-wise prioritization scheme which is achieved by ranking pipes selected during a multiobjective (MO) evolutionary optimization of replacement scenarios. Such a procedure helps overcome the doubts in choosing among the solutions obtained by MO evolutionary optimization due to... |
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| publications-3789 |
article |
2015 |
Sahin, Oz and Sahin, Oz and Stewart, Rodney Anthony and Stewart, Rodney Anthony and Porter, Michael A. and Porter, Michael G. |
Water security through scarcity pricing and reverse osmosis: A system dynamics approach |
Journal of Cleaner Production |
10.1016/j.jclepro.2014.05.009 |
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Water supply and demand planning is often conducted independently of social and economic strategies. There are presently no comprehensive life-cycle approaches to modelling urban water balances that incorporate economic feedbacks, such as tariff adjustment, which can in turn create a financing capacity for investment responses to low reservoir levels. This paper addresses this gap, and presents a system dynamics model that augments the usual water utility representation of the physical linkages of water grids, by adding inter-connected feedback loops in tariff structures, demand levels and financing capacity. The model, applied in the south-east Queensland region in Australia, enables simulation of alternatives and analysis of stocks and flows around a grid or portfolio of bulk supplies including an increasing proportion of rain-independent desalination plants. Such rain-independent water production plants complement the rain-dependent sources in the region and can potentially offer indefinite water security at a price. The study also shows how an alternative temporary drought pricing regime not only defers costly bulk supply infrastructure but actually generates greater price stability than traditional pricing approaches. The model has implications for water supply planners seeking to pro-actively plan, justify and finance portfolios of rain-dependent and rain-independent bulk water supply infrastructure. Interestingly, the modelling showed that a temporary drought pricing regime not only lowers the frequency and severity of water insecurity events but also reduces the long-run marginal cost of water supply for the region when compared to traditional reactive planning approaches that focus on restrictions to affect demand in scarcity periods. |
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| publications-3790 |
article |
2011 |
Willis, Rachelle McDonald and Willis, Rachelle McDonald and Stewart, Rodney Anthony and Stewart, Rodney Anthony and Williams, Philip L. and Williams, Philip and Hacker, Charles Hilton and Hacker, Charles Hilton and Emmonds, S. C. and Emmonds, S. C. and Capati, G. and Capati, G. |
Residential potable and recycled water end uses in a dual reticulated supply system |
Desalination |
10.1016/j.desal.2011.01.022 |
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The need to understand, model and predict urban water consumption is paramount, particularly with urban densities increasing throughout the world. Specifically, it is vital to determine potable water savings, daily demand patterns and actual end use water consumption experienced in diversified water supply schemes in order to verify planning estimates and justify the future application of such schemes. This paper details the results of a mixed methods (quantitative and qualitative) end use investigation, pre- and post-commissioning of recycled water, in a dual reticulated supply scheme in the master planned Pimpama Coomera region, Gold Coast, Australia. Recycled water, supplied for irrigation and toilet flushing, accounted for 59.1 L/p/d or 32.2\% of total consumption post-commissioning, with irrigation being 28.9 L/p/d or 15.7\%. Furthermore, developed end use diurnal patterns demonstrate the unique daily demand consumption within the region and significant reductions in peak potable water demand when compared with single reticulated supply areas. The paper concludes with discussions of implications for better informed water services infrastructure planning activities. |
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