scholarly journals Addressing the Scarcity of Traditional Water Sources through Investments in Alternative Water Supplies: Case Study from Florida

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2089
Author(s):  
Tatiana Borisova ◽  
Matthew Cutillo ◽  
Kate Beggs ◽  
Krystle Hoenstine
Keyword(s):  
Water Supply ◽  
Water Conservation ◽  
Water Demand ◽  
The United States ◽  
Ordinary Least Squares ◽  
Least Squares Regression ◽  
Fresh Groundwater ◽  
Capital Costs ◽  
Alternative Water ◽  
Alternative Water Supply

This paper examines the capital costs for alternative water supply projects in Florida, the third most populous state in the United States. The increasing scarcity of fresh groundwater in Florida has led to investments in alternative water supply sources, including brackish groundwater, surface water capture and storage, reclaimed water, and stormwater. Expenditures to meet the growing water demand for the 20-year planning horizon are estimated using water demand projections and existing supply estimates from Florida’s five water management districts. In the regions where demand projections exceed the existing supply, the districts are required to identify project options to meet the growing water demand while protecting the natural systems. This study uses the database of 645 projects implemented in the past or considered for the future. The Ordinary Least Squares regression model shows that project implementation costs depend on project capacity, type, implementation status, and implementation region. Given the most common project types and project sizes, the total investments to meet the state’s future water demand could reach almost $2 billion in the next 20 years. The expenditures necessitate more cost-effective options (such as expanding stormwater use and water conservation).

An alternative water supply for chilean coastal desert villages

1992 ◽  
Vol 8 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Pilar Cereceda ◽  
Robert S. Schemenauer ◽  
Marcela Suit
Keyword(s):  
Water Supply ◽  
Coastal Desert ◽  
Alternative Water ◽  
Alternative Water Supply

Profiles in workplace giving: a cluster analysis of ‘types’ of givers within a public university

2022 ◽  
Author(s):  
Jorge Ruiz-Menjivar ◽  
Tracy Johns ◽  
Tara Counts ◽  
Yong Liu ◽  
Jennifer Amanda Jones
Keyword(s):  
United States ◽  
Cluster Analysis ◽  
The United States ◽  
Ordinary Least Squares ◽  
Public University ◽  
Strategic Marketing ◽  
Public Employees ◽  
Least Squares Regression ◽  
Job Classification ◽  
Employment Duration

This study examines public employees’ donations to a workplace giving campaign at a large public university in the south-east of the United States. First, we employed logistic regression to predict the likelihood of donating through workplace giving programmes using a sample of employees at a large public university (N = 11,726). Second, we estimated an ordinary least squares regression to identify the significant predictors of donation value with a subsample of employee donors (n=1,832). Third, we developed donor profiles (for example, clusters) of employee benefactors using K-medoids clustering. Factors such as sex, age, education and salary were significant predictors of both being a donor and the donation amount. Additionally, employment duration was significantly related to being a donor and the donation amount, while job classification only predicted being a donor. Employee donors fell into five distinct clusters. These findings contribute to our knowledge of workplace giving campaigns and can be used to develop strategic marketing campaigns.

scholarly journals Bikes or Bust? Analyzing the Impact of Bicycle Infrastructure on Business Performance in San Francisco

2019 ◽  
Vol 2673 (12) ◽  
pp. 277-289
Author(s):  
Raleigh McCoy ◽  
Joseph A. Poirier ◽  
Karen Chapple
Keyword(s):  
San Francisco ◽  
Business Performance ◽  
The United States ◽  
Ordinary Least Squares ◽  
Grocery Stores ◽  
Least Squares Regression ◽  
Mode Shift ◽  
Bicycle Infrastructure ◽  
The Impact ◽  
Over Time

Transportation agencies at the local, state, and federal levels in the United States (U.S.) have shown a growing interest in expanding bicycle infrastructure, given its link to mode shift and safety goals. These projects, however, are far from universally accepted. Business owners have been particularly vocal opponents, claiming that bicycle infrastructure will diminish sales or fundamentally change the character of their neighborhoods. Using the case of San Francisco, this research explores the relationship between bicycle infrastructure and business performance in two ways: change in sales over time, and a comparison of sales for new and existing businesses. An ordinary least squares regression is used to model the change in sales over time, isolating the effect of location on bicycle infrastructure while controlling for characteristics of the business, corridor, and surrounding neighborhood. Through a series of t-tests, average sales for businesses that pre-date bicycle infrastructure and for those that opened after the installation of such projects are compared. Ultimately, the research suggests that location on bicycle infrastructure and changes in on-street parking supply generally did not have a significant effect on the change in sales, with a few exceptions. Businesses that sell goods for the home or auto-related goods and services saw a significant decline in sales when located on corridors with bike lanes. New and existing businesses generally had similar sales, though not across the board. New restaurants and grocery stores had significantly higher sales than their existing counterparts, suggesting bicycle infrastructure may attract more upmarket businesses in those industries.

scholarly journals The optimal allocation of water resources oriented to prioritizing ecological needs using multiple schemes in the Shaying River Basin (Henan Section), China

2021 ◽  
Author(s):  
Hang Li ◽  
Xiao-Ning Qu ◽  
Jie Tao ◽  
Chang-Hong Hu ◽  
Qi-Ting Zuo
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
River Basin ◽  
Water Conservation ◽  
Water Demand ◽  
Optimal Allocation ◽  
Supply And Demand ◽  
Allocation Model ◽  
Water Supply And Demand ◽  
Ecological Objectives

Abstract China is actively exploring water resources management considering ecological priorities. The Shaying River Basin (Henan Section) serves as an important grain production base in China. However, conflicts for water between humans and the environment are becoming increasingly prominent. The present study analyzed the optimal allocation of water while considering ecological priorities in the Shaying River Basin (Henan Section). The ecological water demand was calculated by the Tennant and the representative station methods; then, based on the predicted water supply and demand in 2030, an optimal allocation model was established, giving priority to meeting ecological objectives while including social and comprehensive economic benefit objectives. After solving the model, the optimal results of three established schemes were obtained. This revealed that scheme 1 and scheme 2 failed to satisfy the water demand of the study area in 2030 by only the current conditions and strengthening water conservation, respectively. Scheme 3 was the best scheme, which could balance the water supply and demand by adding new water supply based on strengthening water conservation and maximizing the benefits. Therefore, the actual water allocation in 2030 is forecast to be 7.514 billion (7.514 × 109) m3. This study could help basin water management departments deal with water use and supply.

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