This research is triggered by a fundamental shift that is occurring in the manufacture and marketing of aero engines for commercial and defence purposes, away from the selling of products to the provision of services. Under the emerging ‘power by the hour’ paradigm, aero engines are effectively leased to the airlines, with the manufacturing company remaining responsible for their maintenance and r

A controller for a tunneling accelerometer has two tasks: to establish tunneling and to maintain tunneling during acceleration. This paper describes the design and implementation of a digital controller that accomplishes these tasks and provides the appropriate gain switching. The control law is based on a standard configuration of an observer and state feedback. A digital controller is implemente

The lifetime of two metastable levels in Fe+ has been measured by laser probing of a stored ion beam. In the dense spectrum of Fe+, the metastable levels a 6S5/2 and b 4D7/2 were selected and their lifetimes were determined to be 230+/-30 and 530+/-30 ms, respectively. The lifetimes are compared with previous theoretical results. Metastable lifetime measurements of Fe+ are of great importance for

Batch management systems are traditionally composed of two subparts, one assuring the creation and configuration of the recipes, and the other assuring the execution of the recipes, i.e., driving the equipments to make a product. By reducing the total time needed for producing a product, the market can be reached quicker and more money can (hopefully) be earned. Time to market is an important key

This dissertation examines the effects of the three major lexical form-classes in English (nouns, lexical verbs, and adjectives) on lexical infelicity in the English of adult advanced Swedish learners. By lexical infelicity is meant deviations from the native English norm in meaning only. Morphological form is not taken into account. It has previously been established that there are some clear, di

Popular Abstract in English Lions (Panthera leo) have become known to be synonymous with wild Africa since its extinction from most parts of its former range (Europe, Asia and Southern America). Few people realize that anthropogenic activities have caused habitat loss, fragmentation and reduction in size to the lions, forcing them to the brink of extinction. Whenever out in nature, most tourists tHigh growth rate in human populations, agricultural developments and industrialization have impinged negatively on the natural habitats of most large carnivores, causing fragmentation, isolation and consequently reduction in population size. Lions (Panthera leo) that once roamed most parts of Southern Europe, Asia, the Middle East, North America, northern part of South America and most parts of Af

Abstract The overarching aim of this paper is to investigate the importance of technological shifts and national macroeconomic preconditions for long term growth and structural transformation in various regions in a national regional system. Intrinsic to this, the issue and origin of divergence and convergence coming in repetitive waves in regional systems will be discussed as a possible contribut