The paper presents the possibility of management fan performance in dependence on CO2 concentration. A mathematical calculation is made from prediction electric energy consumption for a variant control algorithm. most advantageous algorithm programmed into actual system, and its power shown graph. Finally, saving adaptive compared to classical over time. To program algorithm, mass balance equat...

Frequency converters provide means for the energy efficient flow and pressure control in pumping and fan systems by varying the motor speed. Besides speed variation, a modern frequency converter can estimate the state and performance of system operation without additional measurement sensors. This ability provides several possibilities to optimize pumping or fan system operation and the resulti...

When measuring emissions of gases, particulate, and odor from animal buildings, the ventilation data are equally important as the concentration data, because emission rate of a pollutant is the product of its concentration and the ventilation rate. However, effectively measuring and monitoring building ventilation remains a technical challenge, especially in barns with numerous fans. Although s...

As the number of services and the size of data involved in workflows increases, centralised orchestration techniques are reaching the limits of scalability. In the classic orchestration model, all data passes through a centralised engine, which results in unnecessary data transfer, wasted bandwidth and the engine to become a bottleneck to the execution of a workflow. This paper presents and eva...

A recently published method computes path delay fault coverage from the count of the number of path faults newly sensitized by a simulated vector pair. Such an estimate is pessimistic since several paths may share a set of lines. In this paper, we present a continuum of approximate methods, approaching exact fault simulation, for a tradeoo between accuracy and complexity. Higher accuracy is obt...

One of the most interesting aspects of sports fans is their degree of involvement and affiliation with their favorite sports team. Indeed, perusal of the popular press suggests that sports fans reveal their connection to a favorite team in interesting ways, including wearing team apparel, displaying bumper stickers on their cars, and engaging in celebratory behaviors that range from fairly pass...