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As power systems become more reliant on intermittent resources, system operators are faced with the fact that the availability of intermittent resources is beyond human control and largely unpredictable. Due to the lack of compliance from intermittent resources to follow strict dispatch instructions, the dispatch instruction for an intermittent resource is proposed to be a desired dispatch range or...
In this paper, we consider the unit commitment problem of a power system with high penetration of renewable energy. The optimal day-ahead scheduling of the system is formulated as a risk-averse stochastic optimization model in which the load balance of the system is satisfied with a high prescribed probability level. In order to handle the ambiguous joint probability distribution of the renewable...
Strong coupling between the gas and electricity infrastructure introduces new kinds of vulnerabilities in energy systems. Identification and assessment of these vulnerabilities is a challenging task because of the complexity of the system and the non-trivial role of the weather, which is inherently random. Prolonged periods of cold weather can dramatically amplify the negative effect of common failure...
ATM is an essential banking service that is used by banks to provide 24*7 banking operations. This purpose can be better served if the ATM locations are optimized for better coverage in a geographical area. The problem of ATM location is further complicated as customers of one bank can use their debit cards at any other bank ATMs. While this might attract charges, some banks often refund these charges...
With the rapid popularization of the Internet, nowadays manufacturers are increasingly adopting a dual-channel to sell their products, i.e., The traditional retail channel and online direct channel. Empirical studies have shown that retailer's local advertising has significant effects on demand and pricing decision. However, there is scant literature addressing the decision on the local advertising...
With this paper we introduce a simulation approach to Green Business Process Management (Green BPM). While objectives for business processes are traditionally economic (e.g. Costs or cycle time), our approach focuses on the energy consumption and the carbon footprint of complex business processes. We present an approach for applying Business Process Simulation (BPS) techniques to the subject, using...
E-Government services pose numerous challenges in terms of interoperability of services, design of services, optimization of process chains, identification and assessment of the value-chain of services, cross-organizational service chains, workflow support of e-services, integration of internal IT support, G2G and G2C e-services, outsourcing of services, digital preservation, electronic records management,...
The role of distributed and variable renewable resources as major participants in power system operations and markets has grown beyond the point of speculation in many jurisdictions. Alongside that market growth, the capabilities of distributed and renewable resources have been maturing to the point where it no longer makes sense to view these resources as constraints. Markets and policies, however,...
The algorithm presented in this paper computes a maximum probability differential characteristic in a Substitution-Permutation Network (or SPN). Such characteristics can be used to prove that a cipher is practically secure against differential cryptanalysis or on the contrary to build the most effective possible attack. Running in just a few second on 64 or 128-bit SPN, our algorithm is an important...
In 2006 a test of residential electricity pricing using multiple tariffs was performed using a mixture of fixed-prices, time of-use prices and 5-minute real-time prices. Each tariff has advantages and disadvantages for both consumers and utilities. This paper examines a numerical optimization method to efficiently identify the optimal combination of customers to enroll under the available tariffs...
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