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This paper seeks to unpack the complex spatialities of UK airspace, looking beyond traditional civil aviation classifications to focus specifically on the spaces used by military aviation in the UK context. It argues that UK national sovereign airspace should not be viewed as a single homogenous entity, but instead must be reconceptualised as a plethora of multiple, vertically and horizontally, overlapping airspaces that can be activated or deactivated according to need. The paper employs a performativity-based framework that highlights specifically how these spaces are identified and named, to illustrate how these multiple military airspaces are actively performed. Within this it focuses on analysing the citational and iterative actions of professional airspace managers working within the UK Civil Aviation Authority and Royal Air Force. The paper makes extensive use of documentary sources and interviews with key personnel to illustrate how the airspaces above the UK are brought into being through the actions of these actors and how these operations can be seen as part of a wider enactment of militarism's control over space. [ABSTRACT FROM AUTHOR]

The implementation of policies of pre-emption and securitisation by a number of states has led to an increase in the number of aerial incursions by one state's air force into another state's territory in recent years, often occurring before and, indeed, instead of ground incursions. This paper argues that it is vital that we conceptualise territory as a three-dimensional volume, rather than simply a flat area, in order to enable an analysis of how these events impact state sovereignty. The central contention of the paper is to extend recent work on territorial integrity and contingent sovereignty into this aerial dimension. A number of brief case studies are provided to illustrate how different incursion practices actively violate territorial integrity or render state sovereignty contingent. The conclusion seeks to answer the question of whether these incidents imply a crisis in aerial sovereignty or whether they confirm the chronic decline of this norm of international law. [ABSTRACT FROM AUTHOR]

The exploration of electromagnetic vibration sources is very important for the vibroacoustic reduction of a squirrel‐cage induction motor. However, the influence of high‐order electromagnetic force on the electromagnetic vibration of induction motor has not been studied before. The influence of high‐order electromagnetic force on motor vibration is investigated in detail. Firstly, the Maxwell stress tensor method is applied to calculate the electromagnetic force. Next, the force transfer function is introduced to describe the phenomenon that the high‐order electromagnetic force induces the low‐mode motor vibration. Then, the high‐order forces in the air gap of the induction motor are analysed in detail and their effects on motor vibration are simulated. Finally, an experiment is conducted to verify the correctness of the analytical scheme. [ABSTRACT FROM AUTHOR]

Data are presented on the gain in aptitude test scores on retest for intervals of up to five years. While the strength of the retest effect was found to differ by type of test, retest effects within test type were found to be almost constant irrespective of the interval between original and retest administrations. The implications of these gains for personnel testing are discussed. [ABSTRACT FROM AUTHOR]

At an international level, the implementation of environmental management practices in military facilities is now a growing reality, particularly with the implementation of environmental management programmes and/or systems. The main goal of this research was to assess the Portuguese military sector's environmental performance through an index – the MEPE index – in a simplified and useful manner. A second goal was to measure the units' self-assessment against the environmental profile of the military sector as evaluated through the index, to determine how far they match. The index was developed on the basis of the data obtained in a national questionnaire, which was carried out to evaluate environmental practices adopted by military units. Results show that the Portuguese military's overall environmental performance is poor, reflecting that this is quite a new issue in military organizations. Among the military branches the Air Force reveals the best environmental results. Copyright © 2006 John Wiley & Sons, Ltd and ERP Environment. [ABSTRACT FROM AUTHOR]

A dynamic modeling approach to management of multiechelon, multi-indenture inventory systems with repair is addressed. The structure of the model follows that of the U.S. Air Force Reparable Asset Management System. The model is used as a vehicle to discuss the structure of typical multiechelon systems and to illustrate the advantages of a dynamic modeling approach to such systems. [ABSTRACT FROM AUTHOR]

Examines the balance of the military powers in the Middle East. Wars that have stimulated arms race in the Middle East; Changes in the Military balance in the region at the end of the United States' war with Iraq; Military relations of the countries in the Middle East; Problems in the region that confront the military policy of the United States.