Conditions Under which Shop Assistants Work

Resident work conditions under the microscope.

Adrenosympathetic overactivity under conditions of work stress.

Serial measurements of urinary adrenaline, noradrenaline, and 11-hydroxycorticosteroid excretion were performed on 32 healthy men under two conditions of work stress; piecework and work on assembly line. A statistically significant increase in adrenaline, noradrenaline, and 11-hydroxycorticosteroids was observed for piecework and assembly line workers compared with salaried and 'ordinary' worke...

Web Assistants: Towards an Intelligent and Personal Web Shop

Johan Åberg and Nahid Shahmehri Department of Computer and Information Science Linköping University, S-581 83 Linköping, Sweden phone: +46-13-281465, fax: +46-13-282666 e-mail: [email protected], [email protected] url: Johan Åberg, Nahid Shahmehri Abstract: Electronic commerce has recently shown enormous potential to take over the sales market. There is a need to provide services that can reach i...

World at work: bricklayers and bricklayers' assistants.

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Conditions under which suboptimal nonlinear MPC is inherently robust

We address the inherent robustness properties of nonlinear systems controlled by suboptimal model predictive control (MPC), i.e., when a suboptimal solution of the (generally nonconvex) optimization problem, rather than an element of the optimal solution set, is used for the control. The suboptimal control law is then a set-valued map, and consequently, the closed-loop system is described by a ...