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FAILURE of panels under static compression, or for that matter under any loads, involves a vast array of problems ranging from properties of material to initial instability and post‐buckling phenomena as occurring in various types of panels. It is not intended here to do justice to all these aspects of the subject but to select a single—but at the same time very important—topic, develop its analysis as fully as possible, and present the results in a readily applicable form. The structure investigated is the single skin stiffened panel under compression and the mode of failure considered, denoted by flexural cum torsional failure, involves predominantly flexure and torsion of the stringer with a wavelength of greater order of magnitude than stringer height and pitch. By torsional deformation of the stringer we understand a rotation of its undistorted cross‐section about a longitudinal axis R in the plane of the plate, the position of which will be selected later on (see FIG. 1b). The panel may, of course, also fail in a local mode of stringer and plate with a short wave‐length of the order of magnitude of stringer height and pitch, but the analysis of this case is not included here (see, however, Argyris and Dunne). Note that a local mode of deformation of a stringer formed by straight walls is commonly defined as a distortion of the cross‐section in which the longitudinal edges where two adjacent walls meet remain straight (see FIG. 1c).

WE define as an open tube a thin‐walled structure, the cross‐section of which does not include any closed circuit. This property is common, for example, to the curved channel, the interspar wing cut‐out and the panel stiffened with Z‐sections, illustrated in FIG. 1 (a, b, c). But the interspar cut‐out with nose cell (FIG. 1d) is not an open tube in the present definition. All structures discussed in this paper are assumed to be cylindrical and to have a constant cross‐section. It is relatively simple to extend the results to conical taper and longitudinally varying thickness, but this would be beyond the scope and space of the present analysis (see, however, ref. 5).

The methods developed in sections (5)–(7) are now applied to the determination of the torsional cum flexural failing stresses in two panels. The following points should be noted:

This issue is a selected bibliography covering the subject of leadership.

Despite the growing body of literature on both organizational learning (OL) and corporate venture development (CVD), very few attempts have been made to establish connections between these two literature streams. While existing literature provides some evidence that OL may facilitate the process of CVD, several interesting research issues remain unexamined. We know very little about (a) what type of learning processes are effective at various stages of CVD; and (b) whether and how knowledge created through various OL processes enhances venture performance. These research issues are examined in this paper by integrating the literature from OL and CVD. We develop a conceptual model that integrates organizational learning with the antecedents and outcomes of CVD. We argue that (a) organizational learning in CVD occurs through two distinct and yet complementary processes; (b) productive organizational learning occurs when organizations vary their emphases on different types of learning depending upon the stages of CVD; and (c ) different types of learning are associated with different types of venture outcomes. Propositions are developed and implications are discussed to facilitate empirical research.

To the Editor. DEAR SIR, I wish to make the following comments on the article entitled ‘The Open Tube’; AIRCRAFT ENGINEERING, Vol. XXVI, No. 302, April 1954, pp. 102–112, by Dr John Argyris.

The purpose of this paper is to investigate Chris Argyris's ideas from an Islamic perspective.

The main approach is a literature review combined with an analysis based on Islamic principles. At the end, there is a short case study that demonstrates the possible application for practitioners.

Chris Argyris's work touches on a fundamental point: the lack of congruence between espoused values and theories‐in‐use. Such incongruence is amplified by the existence of organizational defense routines. From an Islamic perspective, such an incongruence is very problematic. The paper discusses two mechanisms in the Islamic tradition – sincerity to others and mutual consultation – to overcome this problem. The case study also suggests that more modern techniques can be useful as well. The implications for management education are discussed.

It is proposed that the points raised by Chris Argyris should be taken very seriously by all researchers. Generally, it is proposed that management education should concern itself more with the congruence between values and behaviour.

The case study demonstrates that there are techniques that can be used to overcome organizational defence routines.

This is the first time Argyris's ideas have been examined from an Islamic perspective.

A synopsis is presented of the numerical finite element methodology currently in use at the Institute for Computer Applications (ICA) for the simulation of industrial forming processes. The development of the method is based on the inelastic properties of the material with an extension towards the inclusion of elastic effects and accounts for the thermal phenomena occurring in the course of the deformation. An essential constituent of the computational procedure is the treatment of the unsteady contact developing between the workpiece material and the tool during forming, and of the associated friction phenomena. Automatic mesh generation and variable discretization adaptable to the development of the numerical solution are of importance for industrial applications. These aspects are presented and discussed. Furthermore, solution techniques for thermomechanically coupled problems are considered and investigated with respect to their numerical properties. Application to industrial forming processes is demonstrated by means of three‐dimensional hot rolling and of superplastic sheet forming.

There has been a long and wide‐ranging literature on the problems of the individual's adjustment to the demands of work organisations. In the 1950s, Argyris and Merton argued that the needs of mature individuals and the properties of modern bureaucracies were incongruent. In a later work, Argyris argued that the larger the organisation, the greater the incongruence and the greater the suppression of individuality. Maslow argued that suppression was inevitable if two variables interacted: increasing size and uncertain environments. Methods of suppression also attracted attention in the 60s; Ziller noted the techniques included formality, mobility, conformity, dominant leaders and a paucity of information sharing.

The topic of whistleblowing is achieving prominence as a question of social policy. Some influential voices are suggesting that far from whistleblowing — informing on organisations —, being socially undesirable, it may in certain circumstances be an activity deserving high praise. Inevitably it entails huge risks to the activist, and these risks need to be personally and carefully considered. John Banham, Director General of the Confederation of British Industry, wrote in support of the Social Audit report on the subject (Winfield 1990), and a committee established by the Speaker of the House of Commons has suggested the possibility of honouring whistleblowers in the British Honours system for their good corporate citizenship. There have also been landmark reports in America, Australia and Canada (Leahy 1978, Electoral and Administrative Review Commission 1990, Ontario Law Reform Commission 1986).