The use of temporary transfers, such as options and spot market leases, has grown as utilities attempt to meet increases in demand while reducing dependence on the expansion of costly infrastructure capacity (e.g. reservoirs). Earlier work has been done to construct optimal portfolios comprised of firm capacity, transfers, and the decision rules that determine the timing and volume of such tran...

Expanding population and environmental protection the world over are placing additional demands on existing water supplies. Meeting these demands by traditional structural supply augmentation is dogged by increasing environmental and fiscal costs, which leave excess water demand to be met largely by conservation and reallocation of existing supplies. Water trading clearly has a role in realloca...

Using data from the U.S. bicycle industry, we examine the relation among product variety, supply chain structure, and firm performance. Variety imposes two types of costs on a supply chain: production costs and market mediation costs. Production costs include, among other costs, the incremental fixed investments associated with providing additional product variants. Market mediation costs arise...

This paper uses simple hydro-economic optimization to investigate a wide range of regional water system management options for northern Baja California, Mexico. Hydro-economic optimization models, even with parsimonious model formulations, enable investigation of promising water management portfolios for supplying water to agricultural, environmental and urban users. CALVIN, a generalized hydro...

This paper analyses the transition of water rights institutions in Victoria, Australia, between 1840 and 1886. It will focus on the shift from the common law doctrine of riparian rights to government control of water supplies via quasi-government organisations known as irrigation trusts examining factors leading to this transition and whether it increased institutional efficiency. Evidence sugg...

In recent researches, vendor managed inventory (VMI) policy is rarely considered for deteriorating items.   This study considered the supply chain partner’s collaboration via a VMI system and provided an EOQ model for a two-level supply chain (single supplier - single retailer) to examine the inventory management proceedings for VMI and non-VMI supply chains. By a new approach in modeling, the ...

Flowers face desiccating conditions, yet little is known about their ability to transport water. We quantified variability in floral hydraulic conductance (Kflower ) for 20 species from 10 families and related it to traits hypothesized to be associated with liquid and vapour phase water transport. Basal angiosperm flowers had trait values associated with higher water and carbon costs than monoc...

Over the last two decades, Jordan has suffered a chronic water crisis, and is the tenth most water-scarce nation on Earth. Such water stress has been well illustrated in the case of Greater Amman, the capital, which has grown dramatically from a population of around 2000 in the 1920s, to 2.17 million today. One of the distinctive characteristics of the water supply regime of Greater Amman is th...