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Article
Publication date: 1 March 1992

Zbigniew M. Nowicki

In distributing its CDS/ISIS package, UNESCO cooperates with various organisations all over the world which act as CDS/ISIS distributors. These organisations fall into…

Abstract

In distributing its CDS/ISIS package, UNESCO cooperates with various organisations all over the world which act as CDS/ISIS distributors. These organisations fall into three categories:

Details

The Electronic Library, vol. 10 no. 3
Type: Research Article
ISSN: 0264-0473

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Article
Publication date: 3 October 2016

Michal Sobolewski, Norbert Grzesik, Zbigniew Koruba and Michal Nowicki

Nowadays, various methods of observation from unmanned aerial vehicles (UAV) are being widely developed. There are many ways of increasing the amount of information…

Abstract

Purpose

Nowadays, various methods of observation from unmanned aerial vehicles (UAV) are being widely developed. There are many ways of increasing the amount of information retrieved from captured material. Unfortunately, hardware solutions consume a lot of energy, which is unacceptable in UAV applications, as it can have direct impact on the observing time on UAV. Those kinds of problems have been identified during the development phase of stabilizing platform in Polish Research Space Centre in Warsaw. As a result of that fact, energy saving control methods have been implemented, which estimates quality of stabilization process for the observation-tracking device (OTD).

Design/methodology/approach

Mathematical model has been designed and validated with real-life experiments for the purpose of optimization of stabilization and control process. Two types of controlling algorithms have been implemented: linear quadratic regulator and proportional derivative method for driving the mechanism. Based on numerical simulations of the mechanical model being controlled by the mentioned driver, it was possible to define membership functions. After the process of defuzzification, the controller predicts quality of stabilization under defined environmental working conditions.

Findings

An autonomous energy saving system has been created that can be implemented in many applications, where environmental conditions may change significantly.

Practical implications

To test the proposed fuzzy controller, OTD has been chosen as an example object of application. It is a mechanical platform which houses the optical observation system. It is designed to provide the best working conditions during flight.

Originality/value

That kind of decision-making unit has never been implemented before during observations which were carried out during flying of an object. That innovative controller should bring significant energy consumption savings.

Details

Aircraft Engineering and Aerospace Technology, vol. 88 no. 6
Type: Research Article
ISSN: 1748-8842

Keywords

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Book part
Publication date: 26 September 2005

Jacob Eisenberg and Keith James

The nature of affect and creativity relationship has been under debate, with some studies pointing out that positive affect is conducive, while others arguing that…

Abstract

The nature of affect and creativity relationship has been under debate, with some studies pointing out that positive affect is conducive, while others arguing that positive affect is detrimental to creative performance. In order to clarify the complicated affect-creativity relationship, we examine several factors that have not been sufficiently looked at: the role of affect characteristics (e.g., temporal factors), neuro-cognitive mechanisms (e.g., set-breaking), and the type of creative task performed (e.g., requiring negative versus positive creativity). To improve our understanding of seemingly inconsistent previous findings, we offer a model that links affect, through a set of mediators and moderators, to creative performance in organizations, accompanying our analysis with a set of 14 testable propositions.

Details

The Effect of Affect in Organizational Settings
Type: Book
ISBN: 978-0-76231-234-4

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