This paper proposes a distributed sliding mode control strategy for optimal Load Frequency Control (OLFC) in power networks, where besides frequency regulation also minimization of generation costs is achieved (economic dispatch). We study a nonlinear power network partitioned into control areas, where each area is modelled by an equivalent generator including voltage and second order turbine-g...

Freshwater wetlands are a major source of the greenhouse gas methane but at the same time can function as carbon sink. Their response to global warming and environmental pollution is one of the largest unknowns in the upcoming decades to centuries. In this review, we highlight the role of sulfate-reducing microorganisms (SRM) in the intertwined element cycles of wetlands. Although regarded prim...

We have carefully reviewed the paper by De et al., reporting defective vials of NIST SRM 909a [1]. We thank the authors for initially alerting us to the problems they describe in some detail. While we do not disagree with their findings, we believe your readers should have additional information on SRM 909a. The Standard Reference Materials Program receives letters from SRM users from time to t...

A standard reference material (SRM 1048) has been developed for use with the cup furnace smoke toxicity method. This SRM is to be used to calibrate the apparatus and to enable the user to have confidence that the method is being conducted in a correct manner and that the equipment is functioning properly. The toxicological results from this SRM should not be used to compare with those of other ...

This paper presents the performance computation of three-phase 6/4 poles Switched Reluctance Motor (SRM) with amorphous alloy core using transient Finite Element Analysis (FEA) in which the magnetic field is combined with a driving circuit. In order to minimize torque ripple in SRM, this paper proposes not only optimal combination of stator pole arc and rotor pole arc but also the turn-on and t...

Structural changes and increasing market dynamics in the healthcare sector intensify the hospitals’ need for cost-savings and process optimisation. One source to generate not only short-term savings, but also sustainable benefits is the active and sophisticated management of relationships with suppliers, commonly referred to as supplier relationship management (SRM). As material cost continuous...

Discrete-time, linear control systems with specified pointwise-in-time constraints, such as those imposed by actuator saturation, are considered. The constraints are enforced by the addition of a nonlinear ‘reference governor’ that attenuates, when necessary, the input commands. Because the constraints are satisfied, the control system remains linear and undesirable response effects such as ins...

In a recent Boston Globe op ed article, “Is the ‘Governor Effect’ Real?,” Harvard University economist Edward Glaeser (2011) asks whether elected state officials have the power to influence the trajectory of job growth within their states. Glaeser questions one governor’s claim that he is responsible for the substantial job growth in his state. Using a comparative statistical analysis, he estim...

Super-resolution microscopy (SRM) allows precise localization of proteins in cellular organelles and structures, including the actin cytoskeleton. Yet sample preparation protocols for SRM are rather anecdotal and still being optimized. Thus, SRM-based imaging of the actin cytoskeleton and associated proteins often remains challenging and poorly reproducible. Here, we show that proper paraformal...

We explore the problem of discovering multiple missing values in a semi-structured database. For this task, we formally develop Structured Relevance Model (SRM) built on one hypothetical generative model for semi-structured records. SRM is based on the idea that plausible values for a given field could be inferred from the context provided by the other fields in the record. Small-scale experime...