Women in hotel and catering management in the U.K.

Traditionally management has been a function dominated by males in society but currently, due to a number of changes in the environment, many more women are entering into this area. It is envisaged that this trend will continue in the future. The paper commences with a review of the literature examining the background of the issue, and proceeds to highlight some of the reasons contributing to female under-representation in management. The paper concludes by proposing a strategy towards rectifying the balance in the hotel and catering industry.     

Optimal maintenance center inventories for fault-tolerant repairable systems

In many military and commercial contexts, complex equipment which is expected to perform very reliably is often designed to be fault-tolerant, that is, able to function although some of the parts have failed. A popular fault-tolerant design is the m-out-of-n system, where there are n identical parts, at least m of which must be functional for machine operation. Complex equipment of this type often undergoes scheduled maintenance overhauls at regular intervals during which all failed components are replaced. Failure to have replacements on hand for failed parts requires emergency measures at premium cost. When repairable parts are highly reliable and expensive, both holding and shortage costs are high. A reasonable objective is to choose initial spares inventory to minimize the sum of holding costs and expected shortage costs.We first develop a model to determine the optimal repairable parts inventory for a maintenance center servicing machines containing a single m-out-of-n system. The model is then extended to handle a related problem, finding optimal maintenance center inventories for machines containing several m-out-of-n systems of different parts, minimizing total expected costs subject to a constraint on total inventory investment.We assume that there is a fleet of machines, which experience identical workloads. There is a cycle time of T days between overhauls for an individual machine. A machine arrives at the maintenance center for overhaul each day. At the overhaul, all failed parts are removed and sent to a repair shop, from which they eventually return to the maintenance center to be used again as spares. The total number of spares undergoing repair and on hand is a constant. There are no backorders; if the number on-hand spares is insufficient to meet demand at an overhaul, a shortage penalty is assessed which depends on the number and type of spares required.While computing holding costs is straightforward, computing expected shortage costs is more complex. Expected shortage costs are dependent upon several factors, including component failure rates, the values of m and n, part repair rates, and the initial number of spares on hand. We assume that the system of interest is well specified, so that the parameters of the model are known except for the number of initial spares of each type, which are the decision variables. We model the on-hand inventory of each type of part as a Markov chain with the number of spares on hand at the end of each day as the states, under the assumptions that failure rates are constant and repair times follow independent exponential distributions. We then calculate the steady-state probabilities of stockout of various numbers of spares, as a function of the initial spares inventory. The expected shortage costs for a given type of spare may then be calculated by finding the product of the penalty cost for lacking p spares and the probability of lacking p spares and summing over all possible p values.Solutions to the problem of finding optimal initial inventory level for a machine containing a single m-out-of-n system may be found easily by enumeration. Solutions to the constrained problem where the machine contains several independent m-out-of-n systems, may be found by dynamic programming. Sensitivity analysis of costs to changes in the inventory investment constraint is clear, and computational effort is reasonable. A simple example is included to illustrate the solution method for both problems.     

Foreign Investment in U. S. Agricultural Land: An Overview of the National Issue and a Case Study of Vermont

A bstract . A number of issues surround the ownership of farmland by absentee owners and foreign nationals. The response to these concerns in the United States has been the promulgation of the Agriculture Foreign Investment Disclosure Act (AFIDA) which provides for a land purchase reporting system. The present investigation seeks to describe the nature of the foreign land ownership picture in the United States, the status of existing state laws which deal with the matter and. through the example of a case study on the State of Vermont , attempts to describe impacts and implications of such ownerships.     

Goals-delphis for urban planning: Concepts in their design

An algorithm for the use of the Delphi technique in developing goal hierarchies for urban systems planning is outlined. Some of the major psychological forces operating in the Delphi process, particularly the influence of group pressure, are discussed, and the implications of these in terms of alternative internal designs are described. Goals-Delphis may be considered to involve value judgments, and as such are subject to certain restrictions. They have organizational implications beyond the deliberate goal setting effort, and may be adapted for use as change agents through administrative experiments. The possibility of the use of Delphi for improving the efficiency of multidisciplinary research teams is explored.     

Software engineering standards: the 'formal methods debate' in the uk

This paper traces the evolution of two standards, Def Stan 00-55 and 00-56, regualtin the identification and productin of safety-critical software for defence applications, issued by the Ministry of Defence (MoD) as interim standards in 1991. The standards—00-55, in particular—have become an important forum for articulating the interests of those who work in the UK safety-critical software engineering field; a debate which has largely revolved around the intergral role 00-55 demands for formal methods of sofware development for safety-critical functions or components. In recounting the stor of their gestation within the MoD during the early 1980s; their controversial release in draft form in 1989; and their subsequent second release as interim standards in 1991, the aim has been to illuminate some of the current 'politics' of formal methods of software production, and to consider how the standards are reshaping the discipline of software engineering.     

PSYCHOLOGICAL CONTRACTS AND JOB SATISFACTION: CLUSTERING ANALYSIS USING EVIDENTIAL C‐MEANS AND COMPARISON WITH OTHER TECHNIQUES

The psychological contract refers to an individual employee's belief in mutual obligations between them and their employer. Psychological contracts are a key management concern, as they can impact employees' attitudes and behaviors in ways that influence organizational efficiency and effectiveness. In this paper, we analyse the relationship between the psychological contract and facets of job satisfaction among non‐profit sector employees, using the nascent non‐hierarchical evidential c‐means (ECM) clustering technique. To date, this technique has been theoretically discussed but not widely applied. Based on the Dempster–Shafer theory of evidence, ECM is novel in facilitating the assignment of objects, not only to single clusters, but to sets of clusters, and no clusters (outliers). The paper compares the theoretical underpinnings and findings from ECM with those of three other well‐known clustering techniques, namely (1) the hierarchical Ward's method, (2) the non‐hierarchical crisp k‐means and (3) the non‐hierarchical fuzzy c‐means approaches. We present and interpret the cluster solutions from each clustering technique. We establish three clusters differentiated by the content of the employees' psychological contracts. These clusters are validated by considering their relationship with facets of job satisfaction, to ensure the clusters are theoretically meaningful. Comparisons of the findings from each technique: (1) provide insights into the relationship between the psychological contract and job satisfaction; (2) reveal what ECM encompasses, relative to other clustering techniques; (3) inform the selection of an appropriate clustering technique for a specific research problem; and (4) demonstrate potential future directions in the development of cluster analysis. Copyright © 2012 John Wiley & Sons, Ltd.