Nonlinearity measures: a case study

Summary An important problem in applied statistics is fitting a given model function f (β) with unknown parameters β to a data vector y. Minimizing the residual sum of squares provides the least squares estimates of β. If f (β) is linear in β the precision of these estimates is well-known. In a nonlinear case approximate (though asymptotically exact) confidence statements can be made. B eale [1] introduced measures of nonlinearity which can be used to indicate when approximate confidence statements are appropriate. G uttman and M eeter [2] showed that in some, severely nonlinear, cases Beale's measures do not give the right indication. In this paper two new nonlinearity measures are introduced and their use is illustrated on a practical problem described by W itt [3]. A more detailed discussion of the theoretical background can be found in references [1] and [2].     

Just-in-time purchasing: a case study

This article presents a case study on how Hutchinson Technology Incorporated (HTI) organized and implemented just-in-time (JIT) purchasing.     

如何开展案例教学——哈佛大学商学院琳达教授对新教师利用案例教学的几点忠告

案例分析是管理教育中一种十分有效的教学方法,案例教学的成功取决于教师与学生的共同努力,而要熟练地驾驭和运用案例教学方法是一个比较复杂的过程.作为利用案例教学的新教师应做好几方面工作:开课前的筹备工作、课堂案例讨论的组织工作以及课后的交流等.     

Changing legitimate discourse: a case study

This study is concerned with the explanations that managers give to various company stakeholders, in the case of factory closures for example. More generally, the paper examines the way justifications of managerial action are produced and “consumed”, and how the “legitimacy” on which they are based can change over time. With the help of a longitudinal case study the paper describes and seeks to explain the legitimisation processes involved in the major organisational transformations that the case firm has had to face due to radical market changes (joining EU) and organisational changes. It is argued that managers may become prisoners of their context. This may mean that even if they made “correct” decisions, they may still justify these actions “incorrectly” relative to the new cultural and market environment, and thus do not acquire legitimacy. In the reported case almost the whole executive board of the firm was fired—the first time such a thing had happened in the history of Finnish corporate life. It is also shown that the justification of managerial action may be deliberately manipulated in public discourse. One powerful legitimative device in such discourse is to invoke financial distress, or the idea of such distress, which may be needed for triggering genuine changes.     

Building strategic alliances: a case study

It takes much coordination, communication, patience, and persistence to build and manage supplier partnerships in order to lower total costs, reduce lead times, improve the quality of products, optimize inventories, and streamline administrative process. In the absence of the latest technology, it takes talented and enthusiastic team members who take pride in their work, who can think progressively, who can generate optimism in any situation, and who can maintain grace under pressure in order to be successful.     

Charity Technology Trust: a case study

Charity Technology Trust (CTT) is one of a new breed of philanthropic initiatives aimed at helping UK charities become more efficient by better use of technology. Its founder believes that charities are ideally placed to benefit from the reduced costs and shared benefits of jointly developed strategies and fundraising, communications and data management tools. CTT was formed to catalyse a move in this direction from the major UK fundraising charities and is supported by the personal philanthropic contributions of its trustees—a group of successful businessmen. The challenge for such a new organisation with a new idea is considerable, but after 18 months CTT is working with 27 of the top 100 UK charities on projects from online raffles through e‐mail communications to IT strategy. Copyright © 2003 Henry Stewart Publications     

A deterministic profit attribution model: The postal service,a case study

This paper derives a positive model relating changes in profitability to output levels, price, input quantities, and costs. The model involves decomposition of profit changes to define contributions associated with changes in the product market and production input variables. It can be derived from basic profit concepts without additional assumptions regarding the organization's behavioral decisions or about the shapes of the demand or production functions. It therefore avoids all normative underpinnings and is based strictly on measurable changes in the environment. The model is applied to results obtained from the United States Postal Service income statement. Changes in the Service's productivity and its components (e.g., labor, materials, and capital) are fully reconciled in an accounting sense with reported changes in net income. This reconciliation permits the identification of the sources of net income change.     

Supplier involvement through certification: a case study

The Clarkson Company is located in the Reno-Sparks area of Nevada. We are a manufacturer of slurry valves for mining, pulp and paper, power generation, and various other industries. Because of the diverse nature of the applications for which the valves are used, the product can be configured a vast number of ways. Therefore, we use the assemble-to-order methodology for our master production scheduling. It became apparent over a decade ago that the use of materiel requirements planning (MRP) would aid us in controlling our low volume, high option mix environment. That journey led to The Clarkson Company becoming a Class A user of MRPII in June of 1990.     

Decentralisation of collective bargaining: a case study

While a number of surveys have identified a trend towards decentralised bargaining, this article is one of the first to examine the process of decentralisation. The decision of Coats Viyella PLC to decentralise bargaining in its apparel division is examined in detail and the outcomes of the first round of decentralised negotiations are analysed.     

Tensions between assessment,grading and development in development centres: a case study

Development centres capitalize upon tried and tested assessment centre methods and are quite widely used in career management. However, a number of issues arise in their operation. Some of these reflect the balance between, on the one hand, assessing and grading people and, on the other hand, facilitating and guiding their future development. An investigation is reported of how these issues are experienced and made sense of in a UK-based international company. Data were gathered on two occasions one year apart (Ns = 95 and 113) from participants and other stakeholders in a development centre for potential senior managers. Findings indicate that participants who were awarded a high grade at the centre did not necessarily have more positive perceptions of the development centre process. However, grading, with its consequences for development, motivation and social networks, was salient in respondents' comments about the centres. Themes in these responses are identified and described. Participants were more likely than others (e.g. assessors, line managers) to value the development centre for reasons related to their development, whereas others were more likely to mention assessment/grading. Few respondents mentioned both. Overall, the findings support, to some extent, concerns about the incompatibility of grading and development, but also suggest that the use of grading does not entirely negate the developmental value of the centres. Much depends on perceptions of how the grading information is used.     

Informal ties in organizations: a case study

Network techniques are applied to a case study. The results show that using a joint approach can help in giving further insight into the analysis of informal ties in an organization. Special emphasis is given to centrality. The concept of mutual awareness, both on an individual and a global levels, is introduced and illustrated.     

Advanced supplier partnership practices: a case study

This article describes how a supplier partnership was set up to avoid the typical purchasing relationship--price being inversely proportional to quantity and having the purchaser take all the risk of product obsolescence. The case study also describes how rate-based replenishment replaced time-based delivery, and how all these advantages were achieved at reduced administrative costs.     

Non‐competes,business dynamism,and concentration: Evidence from a Florida case study

Most research on non‐competes has focused on employees; here we study how non‐competes affect firm location choice, growth, and consequent regional concentration, using Florida's 1996 legislative change that eased restrictions on their enforcement. Difference‐in‐differences models show that following the change, establishments of large firms were more likely to enter Florida; they also created a greater proportion of jobs and increased their share of employment in the state. Entrepreneurs or establishments of small firms, in contrast, were less likely to enter Florida following the law change; they also created a smaller proportion of new jobs and decreased their share of employment. Consistent with these location and job creation dynamics, regional business concentration increased following the law change in Florida. Nationwide cross‐sections demonstrate consistent correlations between state‐level non‐compete enforcement and the location, employment, and concentration dynamics illustrated in Florida.     

Size and effectiveness: a case study of a small union

This article challenges the conventional wisdom that increasing size is the key to effective trade union representation. We draw on case study research at the National Union of Lock and Metal Workers (NULMW), which has allowed certain assumptions about small and independent unions to be challenged and suggests some possible alternatives to concentration strategies as a response to a hostile environment     

The realities of empowering teams: a case study

This case describes the transition of a manufacturing unit from operating under a rigid hierarchical environment to being run by empowered process management teams. This article traces the evolution of the transformation from the early days of skepticism and nonparticipation to the present, where most of the teams function with a large degree of autonomy and have made significant improvements in quality, lead time, and cost. Elements that help the team process are described, and potential hazards are outlined.