In this chapter we provide an introduction to the basic concept of feedback and the related engineering discipline of control. We focus on both historical and current examples, with the intention of providing the context for current tools in feedback and control. Much of the material in this chapter is adopted from [Mur03] and the authors gratefully acknowledge the contributions of Roger Brocke...

Visualisation is well known as an effective means of enriching user interaction with complex systems. Recent research with online communities has considered the application of visualisation tool support, with the intention of further improving communication between community members. This paper reviews existing work in this area with specific reference to the application of visualisation to imp...

This paper gives a detailed overview of the work and the results of many authors in the area of Lyapunov stability of a particular class of linear systems. This survey covers the period since 1980 up to nowadays and has strong intention to present the main concepts and contributions during the mentioned period throughout the world, published in the respectable international journals or presente...

To the Editor: We appreciate the article of Robergs et al. (5), which gives a complete overview of the biochemistry of metabolic acidosis originating from intense muscular exercise. However, with the intention to clarify the causes of the pH decrease, the authors try to prove that lactic acid plays no role in this process and thus declare that generations of exercise physiologists have been usi...

This paper gives a detailed overview of the work and the results of many authors in the area of the Non-Lyapunov stability of the particular class of linear systems. This survey covers the period since 1985 up to nowadays and has a strong intention to present the main concepts and contributions made during the mentioned period throughout the world, published in the respectable international jou...

background and aims: acute drug poisoning is a major public health problem in the world.the aim of this study was to investigate the trends and characteristics of acute drug poisoning and to compare that with other poisonings in gorgan, iran. methods: this descriptive cross-sectional study was done from march 2008 to march 2015. data were obtained from medical records. stata software and pearso...

Resently the authors had the opportunity of performing surgery of a trifurcated thumb, an extremely rare morphological polydactylous condition of the thumb. Trifurcated thumb had not been included under classification of polydactylous thumb heretofore. Comments were made on this entity from the standpoint of its morphology and consideration was given to its developmental mechanism. Also as surg...