Development and Certification of a New Stall Warning and Avoidance System

Several methods may be employed to improve natural stall characteristics. The method employed on all learjets to obtain improved stall characteristics is a stall warning and avoidance system that employs angle of attack vanes, an electronic computer, a control column shaker motor, and a torquer which drives the control column in a pusher mode to avoid unwanted further buildup of angle of attack. The new system was developed with changes that improve system response with no performance penalty or increase in turbulence sensitivity. The following changes were made included modified system time constants and (alpha) time rate of change of vane angle dead zone and the addition of an alpha signal limiter and an alpha cut out below a specified angle of attack

Implementing collaborative improvement, top-down, bottom-up, or both?

The research presented in this paper was aimed at increasing the current understanding of the process of developing collaborative improvement in Extended Manufacturing Enterprises (EME). Based on action research and action learning of three EMEs involving a total of thirteen companies from five European countries, the present study identifies three different approaches to collaborative improvement (CoI), that is, inter-organisational continuous improvement. One approach to CoI focuses on learning at a practical level, developing this knowledge into strategic and theoretical knowledge. We call this the bottom-up learning-bydoing approach. Another approach focuses on goal alignment and assessment to provide a foundation for improvement before actually improving. We call this the top-down directive approach. Yet another approach focuses on shared goals/vision and meeting on equal terms, and joint work in a non-directive matter. This is the laissez-faire approach. The different approaches influence the collaborative improvement results achieved, and how and why they do so is the question addressed this article

A trilogy on discontinuous innovation. Part I : search

In this article we discuss the concept of Discontinuous Innovation (DI) and how it differs from incremental (or steady-state) innovation. We propose a model to conceptualise the different aspects of DI and discuss the complex nature of the DI process through an investigation of previous literature, and propose a sequence of articles roughly following the key components as described in the conceptual model, beginning with aspects of &lsquo;search&rsquo;. We then describe an on-going multi-national action research program established to investigate DI through the development of learning networks of firms in several European nations and Australia. The research progress to date is outlined and initial results of analysis on both quantitative and qualitative data collected thus far is used to explore how companies go about searching for clues or ideas about potential discontinuous innovations, which may either create competitive advantage for, or threaten the survival of the business. Key outcomes of the research to date include the identification of the most common search strategies within the participating companies and some descriptive analysis on just how these strategies are implemented in targeted firms. Finally we describe the proposed future research program and the two papers to follow completing the planned three part series on Discontinuous Innovation.<br /

Measuring the performance of a regional cluster in innovation facilitation

Regional industry clusters have been promoted for several years as effective mechanisms to assist firms become more innovative and more competitive. But do they really achieve this goal, and more importantly, just how should an assessment of cluster performance in supporting and facilitating innovation within its members, be undertaken? In this paper we report on a study of a regional IT cluster in Western Sydney, Australia, develop some criteria for assessing the innovation facilitation performance of industry clusters, and discuss the cluster in relation to these criteria. We suggest that engagement with a cluster may enhance the innovation capacity of a firm, and the type of required innovation support varies significantly with the maturity and absorptive capacity of individual firms.<br /

Avoiding reputation damage in financial restatements

If your company is forced to issue a financial restatement, how can the right managerial behaviour help to minimise the damage to corporate reputation

Avoiding reputation damage in financial restatements

__Abstract_ If your company is forced to issue a financial restatement, how can the right managerial behaviour help to minimise the damage to corporate reputation

A Study to Determine the Order in Which Major Tools are Desired by Industrial Arts Instructors in South Dakota

The primary objective of this study was to formulate a guide for school administrators or industrial arts instructors to consult when deciding which major tools are necessary for an industrial arts program. The study concerned the following factors: the order of preference of major tools, the size of tools desired