Hassan Rezayat, Jared Richard Bell, Alex J. Plotkowski and Sudarsanam S. Babu
The purpose of this paper is to introduce the multi-solution nature of topology optimization (TO) as a design tool for additive manufacturing (AM). The sensitivity of…
Abstract
Purpose
The purpose of this paper is to introduce the multi-solution nature of topology optimization (TO) as a design tool for additive manufacturing (AM). The sensitivity of topologically optimized parts and manufacturing constraints to the initial starting point of the optimization process leading to structures with equivalent performance is explored.
Design/methodology/approach
A modified bi-directional evolutionary structural optimization (BESO) code was used as the numerical approach to optimize a cantilever beam problem and reduce the mass by 50 per cent. Several optimized structures with relatively equivalent mechanical performance were generated by changing the initial starting point of the TO algorithm. These optimized structures were manufactured using fused deposition modeling (FDM). The equivalence of strain distribution in FDM parts was tested with the digital image correlation (DIC) technique and compared with that from the modified BESO code.
Findings
The results confirm that TO could lead to a wide variety of non-unique solutions based on loading and manufacturability constraints. The modified BESO code was able to reduce the support structure needed to build the simple two-dimensional cantilever beam by 15 per cent while keeping the mechanical performance at the same level.
Originality/value
The originality of this paper lies in introduction and application of the multi-solution nature of TO for AM as a design tool for optimizing structures with minimized features in the overhang condition and the need for support structures.
Details
Keywords
This article has been withdrawn as it was published elsewhere and accidentally duplicated. The original article can be seen here: 10.1108/EUM0000000000613. When citing the…
Abstract
This article has been withdrawn as it was published elsewhere and accidentally duplicated. The original article can be seen here: 10.1108/EUM0000000000613. When citing the article, please cite: Geoffrey N. Soutar, Richard C. Bell, Yvonne M. Wallis, (1990), “Consumer Acquisition Patterns for Durable Goods: A Rasch Analysis”, European Journal of Marketing, Vol. 24 Iss: 8, pp. 31 - 39.
The purpose of this article is to provide an interview with award‐winning author and columnist, Richard Donkin.
Abstract
Purpose
The purpose of this article is to provide an interview with award‐winning author and columnist, Richard Donkin.
Design/methodology/approach
The paper provides an interview with Richard Donkin, author of The Future of Work.
Findings
In the interview, Donkin discusses what the future holds for human resource management, and how the human resources (HR) function must adapt in order to remain relevant.
Originality/value
Donkin is critical of many current HR processes, and offers his opinion about the changes HR departments must make.
Details
Keywords
Ivan T. Robertson, Richard Bell and Golnaz Sadri
Previous research on the use of behaviour modelling techniques fortraining in industry have shown it to be generally effective. Further,more specific work has suggested that…
Abstract
Previous research on the use of behaviour modelling techniques for training in industry have shown it to be generally effective. Further, more specific work has suggested that effectiveness might be improved by the use of techniques (symbolic coding and rehearsal) designed to improve trainees’ retention processes. This study examined the use of symbolic coding (learning points) and rehearsal techniques in behaviour modelling training. The data were derived from a field experiment conducted in a UK financial services organisation. Although, as expected, the behaviour modelling approach did produce effective learning the results showed that, contrary to hypotheses, variations in symbolic coding (different learning points conditions) and rehearsal did not influence training outcomes.
Details
Keywords
Geoffrey N. Soutar, Richard C. Bell and Yvonne M. Wallis
There has been considerable researchinto the pattern of consumer durablepurchase. Most of the research hasused Guttman scaling as the basis ofthe analysis but there are…
Abstract
There has been considerable research into the pattern of consumer durable purchase. Most of the research has used Guttman scaling as the basis of the analysis but there are some problems in using this method with durable ownership data. It is suggested that Rasch scaling is an alternative approach and the results of analysing a data set which had previously been analysed using Guttman scaling are analysed. The advantages of Rasch modelling are outlined and some implications of the results are discussed.
Details
Keywords
Ian Davis and Mark Vicars
The purpose of this paper is to present two examples how stories and storying can be utilised to excavate forgotten points and junctures that result as fundamental episodes in the…
Abstract
Purpose
The purpose of this paper is to present two examples how stories and storying can be utilised to excavate forgotten points and junctures that result as fundamental episodes in the forming of the subjective selves. Writing in-between masculinity and queerness both stories trace the experience of two boys through accounts of initiation and subjection.
Design/methodology/approach
Using autobiography as a method, in concert with Deleuzian-Guattarian notions of becoming and becoming other the paper explores how the discovery of subjective difference informs how the work of identity making and survival take place.
Findings
What is uncovered in the process of the paper is how we learn the disguises needed for survival through an early encounter away from the dominating and into the dominated. In this process of becoming other strategies are designed to disguise difference and avoid detection.
Social implications
The gaps and fissures that exist between intergenerational positions in conjunction with the straight/gay sexuality binary provide the environment within which the paper operates. Through personal biography the paper investigates how this structure informs the subjective positionality and the identity construction.
Originality/value
The openness of the writing found in both of these accounts, although clearly a narrative construction, are also akin to a stream of remembering or spontaneous prose writing. The accounts themselves are not heavily edited; they have not been figured and refigured to produce pleasing literary effects. Instead they remain raw utilising narrative tropes such as flash-back and dramaturgy simply as conduits to memory. The tropes that are employed could be read as defensive or distancing mechanism, a protection against the capacity of the unfolding lived experience to disturb and disrupt.
Details
Keywords
Mark Holland, Richard Bell and Liz Hughes
The aim of this paper is to describe the development and functions of local and regional networks for professionals working with dual diagnosis in the north of England.
Abstract
Purpose
The aim of this paper is to describe the development and functions of local and regional networks for professionals working with dual diagnosis in the north of England.
Design/methodology/approach
The paper is a descriptive account of local and regional networks in the north of England – their development, their function and future plans.
Findings
Local and regional networks are important in helping people share resources and ideas as well as gaining mutual support in what can be very stressful roles. However, there is a danger in a climate of financial constraints that network activities may be lost.
Originality/value
This paper focuses on the importance of collegiate networks of professionals and service user representatives and offers a perspective from the north of England.
Details
Keywords
Richard Bell, Henry A Walker and David Willer
Classical and contemporary theorists are at odds over the structure of power relations in organizations and the relationship between power differences and the distribution of…
Abstract
Classical and contemporary theorists are at odds over the structure of power relations in organizations and the relationship between power differences and the distribution of control and benefits. The classical arguments of Marx and Weber describe steep hierarchical structures in which those at the top exercise substantial control over subordinates and gain a disproportionate share of the organization's benefits. Contemporary theories are divided on two counts. Some imply that power is organized hierarchically—although not to the extent claimed by classical scholars—while others claim that power is diffuse. Similarly, the early exchange arguments separated benefit from control, and claimed that power is directly related to the distribution of control but inversely related to the distribution of benefits. Contemporary exchange theorists connect power to the distribution of control and benefit but most imply that power differences weaken, that is, power relations become less hierarchical, with power use.This paper offers the first simultaneous application of Elementary Theory, Status Characteristics Theory, and Legitimacy Theory to the study of organizational dynamics. Each theory describes the process through which differences on a single factor, e.g., power, influence, or organizations. We claim that most organizational analysts either focus on power processes to the exclusion of influence and legitimacy processes or conflate the three ideas and treat their confluence as power. In either case, the result is misspecification of the distribution of power in organizations and/or an underestimation of its effects on the distribution of control and benefit.We untangle the three ideas and use the three arguments to develop new understandings of the distribution of benefits and control in organizations. All three theories describe processes that connect behavior to structural conditions. Elementary Theory infers power differences from exchange structures that permit competitive mobility while Status Characteristic Theory infers influence from status orders. The three theories do not exhaust coverage of power, influence, and legitimacy processes under all conditions. However, when they are applied concurrently, the three describe greater concentrations of power than those implied by conventional organizational theories.Our joint application of Elementary Theory and Status Characteristics Theory offers a new explanation for the commonly described relationship between differences in expertise and the exercise of power. We also explain the relationship between uncertainty and the distribution of benefit and control. As uncertainty increases, the door is opened for subordinates to exercise greater and greater influence over superordinate actors. Our analysis also offers insights into the phenomena of power-at-a-distance and the relation between mobility in hierarchies and domination and obedience. Conditions that block mobility promote power decentralization. Finally, we show how legitimacy processes enhance and/or constrain power and influence processes. The complex interplay of power, influence, and legitimation processes can produce somewhat flatter distributions of benefit and control than separate analyses of the three processes might imply. We end with a cautionary note: some but not all of our applications of the three theories are supported by experimental studies. Especially in that regard, this work is quite preliminary. Our application of structural social psychological theories—and that of our predecessors—to the study of organizational dynamics leaves much work undone.