this paper deals with optimal operation of a three-product dividing-wall column (dwc). the main idea is to design a control structure, through a systematic procedure for plantwide control, with an objective to achieve desired product purities with the minimum use of energy. exact local method is used to find the best controlled variables as single measurement or combination of measurements base...

Repair mechanisms are important within resilient systems to maintain the system in an operational state after an error occurred. Usually, constraints on the repair mechanisms are imposed, e.g., concerning the time or resources required (such as energy consumption or other kinds of costs). For systems modeled by Markov decision processes (MDPs), we introduce the concept of resilient schedulers, ...

We extend the Faulty RAM model by Italiano and Finocchi (2008) by adding a safe memory of arbitrary size S, and we then derive tradeoffs between the performance of resilient algorithmic techniques and the size of the safe memory. In particular, we describe a resilient algorithm for sorting n entries in O (n logn+ α(δ/S + logS)) time using Θ (S) safe memory locations, where α ≤ δ denotes the act...

OBJECTIVES To identify plausible mechanisms by which resilience (low mortality rates despite persistent economic adversity) was achieved in some areas in Britain between 1971 and 2001. METHODS Mixed method observational study, combining quantitative analyses of cause- and age group-specific mortality rates, and area sociodemographic and environmental characteristics, with case studies of resi...

A function f is d-resilient if all its Fourier coefficients of degree at most d are zero, i.e. f is uncorrelated with all low-degree parities. We study the notion of approximate resilience of Boolean functions, where we say that f is α-approximately d-resilient if f is α-close to a [−1, 1]-valued d-resilient function in `1 distance. We show that approximate resilience essentially characterizes ...