The operations of merchant energy trading in wholesale markets across different locations and current and future dates can be represented as a network where storage and transport trades compete for the capacity of storage and transport assets. We study the tradeoff between storage and transport trading for a network with a single storage asset and multiple transport assets, a realistic situatio...

A novel operational policy, the Process Intermediate Storage operational policy, is introduced and used to synthesize, schedule and design multipurpose batch plants. The model is based on the State Sequence Network and non-uniform discretization of the time horizon of interest model developed by Majozi and Zhu [Majozi, T., Zhu, X. (2001). A novel continuous-time MILP formulation for multipurpos...

Given a picker-to-part warehouse having a simple rectilinear aisle arrangement with north2 south storage aisles and east-west travel aisles (or “cross aisles”), this paper investigates the 3 optimal placement of the cross aisles as a consequence of the probability density function of the 4 order pick locations, as determined by the storage policy. That is, for a given storage policy, 5 what pla...

This paper presents PADS, a new policy architecture that makes it easier to develop distributed storage systems. PADS is based on two key ideas. First, a distributed storage system is implemented by specifying a control plane that embodies the design policy of the system over a data plane that provides a set of common mechanisms. Second, the control plane policy is separated into routing policy...

The outsource data backup to third-party cloud storage services so as to reduce data management costs, security concerns arise in terms of ensuring the privacy and integrity of out-sourced data. Design Policy Base a practical, implementable, and readily deployable cloud storage system that focuses on protecting deleted data with Policy Based file secured deletion. Policy Base is built upon stan...

Third-party storage services pose the risk of integrity and confidentiality violations as the current storage policy enforcementmechanismsare spread acrossmany layers in the system stack. To mitigate these security vulnerabilities, we present the design and implementation of Pesos, a Policy Enhanced Secure Object Store (Pesos) for untrusted third-party storage providers. Pesos allows clients to...

One problem with existing store-and-query sensor networks is that they fail to take data and query rates or network topology information into account. This leads to expensive (and avoidable) communication overhead that reduces the lifespan of battery-powered sensor networks. Scoop reduces this overhead (up to a factor of four in our experiments) by dynamically creating and adapting an in-networ...

© The Ecological Society of America www.frontiersinecology.org E of the principal greenhouse gas (GHG), carbon dioxide (CO2), are driven primarily by the burning of fossil fuels, but the Earth’s biosphere also plays a major role in the global carbon (C) budget. Forest biomes are an important component of the global C budget, because of the large quantities stored in live biomass, detritus, and ...

We formulate and solve the problem of making advance energy commitments for wind farms in the presence of a storage device with conversion losses, mean-reverting price process, and an auto-regressive energy generation process from wind. We derive an optimal commitment policy under the assumption that wind energy is uniformly distributed. Then, the stationary distribution of the storage level co...