Knowledge Spillovers and Wage Inequality: An Empirical Analysis of Dutch Manufacturing

The introduction of new technologies and technical change is associated mainly with high‐skilled and high‐wage workers. In addition, many studies have found a positive correlation between the introduction of new technologies and technical change and skill upgrading. In these studies no attention has been paid to spillovers from one sector to the other. In this paper we not only use measures of technical change but also knowledge spillovers to explain wage inequality in Dutch manufacturing in the period 1986–95. Using this more elaborate measure of technical change, our findings are twofold. First, we confirm that workers employed in knowledge‐intensive manufacturing sectors receive a higher wage than workers in less knowledge‐intensive sectors. Secondly, the wages paid to high‐skilled workers relative to low‐skilled workers in knowledge‐intensive sectors are higher than those in less knowledge‐intensive sectors. However, the coefficients using the elaborate measure of technological advancement are much lower and sometimes even insignificant. This suggests a premium for high‐skilled labour in sectors both applying and developing technology. But the wage premium is highest in technology‐developing sectors, as suggested by the measures used in previous studies.     

Maintaining Relevance in Business Education. A Framework for Exploring Alternative Teaching Paradigms

Relevance has become a critical factor in business education programs. Such programs must deliver the skills and knowledge that enable participants to learn and thrive in a context of change, growing business complexity and technological sophistication. This paper explores the need to realign our teaching approach to the new demands of business managers in pursuit of maintaining relevance. It considers the changes this requires in the learner: teacher relationship, and the way in which information communication technologies have a powerful role to play in developing and managing this new relationship. A model is proposed to explore the alternative teaching paradigms associated wich might be best described as seismic shifts in the learning landscape. For educators it suggests a change in teaching values that emphasise stronger attention to process skills, less teacher autonomy, direction and control, and a more creative use of technology to encourage diversity, dialogue and distributed team learning. This revised version was published online in July 2006 with corrections to the Cover Date.     

Employment Policy Implications of New Management Systems

ABSTRACT: Technical change, economic internationalisation and generally increased competition have caused management in many firms to adopt new employee management systems such as “lean production”, TQM, and have placed a premium on “high performance” cooperative industrial relations systems. This article seeks to provide a first analysis of their likely effects upon the structure of employment, and whether they exacerbate the unemployment problems of many categories of workers. It is argued that these systems place a premium on employment stability of those workers for whom functional flexibility and high levels of cooperation are needed. It asks whether a mix of job stability and limited functional flexibility among incubent workers in many Western European countries has contributed to low hiring rates, and how far cooperative relations within the firm can be cultivated in isolation from conditions in other firms.     

Concurrent consideration of product design,process planning and production planning activities

In manufacturing engineering, product design, process planning and production planning activities are often considered independently. However, in order to effectively respond to changes in business situations, such as changes in demand forecast, product mix and technology, it is desirable to consider them concurrently. For this purpose, a large-scale linear programming model has been developed. The model considers minimization of the sum of processing cost, late shipment cost and inventory holding cost as the objective, and concurrently selects product designs, and generates process plans and production plans. The number of columns in the formulation can be large and, hence, an efficient column generation scheme is developed to solve the model. The model and solution procedure are illustrated with examples.     

COMPUTER INTEGRATION AND CATASTROPHIC PROCESS FAILURE IN FLEXIBLE PRODUCTION: AN EMPIRICAL INVESTIGATION

This paper empirically investigates the effect of advanced manufacturing technology on process stability during flexible production in a process industry. A sample of 61 North American fine paper plants is used to examine the relationship between the level of automation installed for controlling changes between paper grades and the incidence of paper web breaks. These web breaks are catastrophic failures; they require the entire plant to be stopped, reinitialized, and restarted. Because a large fraction of breaks occurs shortly after changeovers, they are an important determinant of the aspect of plant flexibility, called mobility, or the ability to move between products with only small penalties. In an attempt to ensure stable and mobile production, many plants have implemented changeover automation. We find, however, that higher levels of this automation are significantly associated with higher rates of catastrophic failure among the plants studied. We suggest that this finding becomes less paradoxical when considered in light of a recent stream of research on advanced manufacturing technologies, loosely called the usability perspective. According to this perspective, automation designed and implemented with the narrow, technical goal of replacing human operators or removing their discretion over a production process is misguided, especially in environments in which requirements are changing rapidly.     

Bob Hayes: Forty Years of Leading Operations Management Into Uncharted Waters

The enormous contributions of Bob Hayes to Operations Management (OM) are reviewed. His early work made innovative contributions to probability theory and utility estimation that enabled existing Operations Research theory to be applicable to real problems. Later, inspired by field trips to Japanese and German manufacturers, he joined Kim Clark to conduct an ambitious study of 12 plants in three companies, establishing the impact on productivity of factors such as reject rate, work‐in‐process, and production rate variation. In the 1980s, when adoption of advanced manufacturing automation was in vogue, Bob joined Jai Jaikumar to offer a caution, that new manufacturing technologies required new ways of managing and that advanced technology coupled with obsolete management would produce poorer, not better, results. Perhaps Bob's greatest contribution was to raise OM to a more strategic level. With numerous coauthors, notably Steve Wheelwright, he provided a framework for corporate and manufacturing strategy and showed how to achieve alignment between the two, particularly in the choice of production processes. Recent papers articulated a vision for OM in which a focus on the issues of operating managers provides a consistent framework, but enables our research agenda to evolve as the world's economy changes.     

EXPLAINING PLANT-LEVEL DIFFERENCES IN MANUFACTURING OVERHEAD: STRUCTURAL AND EXECUTIONAL COST DRIVERS IN THE WORLD AUTO INDUSTRY

Using data from 62 automobile assembly plants worldwide, we examine the extent to which various structural cost drivers (plant scale, automation, and product mix complexity) and exe-cutionalcost drivers (product manufacturability, management policies, and production practices) account for plant-level differences in manufacturing overhead. Our analysis of structural drivers finds that overhead hours per vehicle are negatively associated with production volumes, consistent with economies of scale in overhead functions. However, automation appears to have little influence on overhead levels. Product mix complexity's effect on overhead requirements varies with the complexity's form and the plant's manufacturing capabilities. Option and parts complexity (measures of peripheral and intermediate product variety) both exhibit adverse effects on overhead, reflecting the considerable logistical, coordination, and supervisory challenges that accompany an increased number of parts and more complex manufacturing tasks. In contrast, model mix complexity (a measure of fundamental variety) appears to have little impact on direct or overhead labor requirements in auto assembly plants. Our analysis of executional drivers provides empirical support for the claim that advanced manufacturing practices such as the reduction of buffers, multiskilled production workers, and the use of teams can lower overhead costs. We also find preliminary evidence that the lower overhead costs in Japanese auto assembly plants are due primarily to the use of multiskilled work teams and the shifting of traditional overhead activities to production workers. Overall, our results indicate that manufacturing overhead is a function not only of the structural cost drivers that have dominated the academic literature but also of executional cost drivers that are harder to duplicate and therefore potentially more valuable for achieving competitive advantage.     

Do Business Cycles Have Long‐Term Impact for Particular Cohorts?

Do business cycle fluctuations and changes in employment produce cohorts with permanently different labour market attachment? Taking an explicit cohort perspective and based on Danish register data, we find noticeable age dependent persistence in employment rates at the cohort level. Younger workers tend to be more exposed to business cycle fluctuations than older workers, but importantly they recover more quickly than older workers for whom persistence is stronger. Moreover, following the employment trajectories of cohorts, no cohorts have been permanently ‘scarred’ in terms of employment due to a sequence of adverse shocks. Finally, an explicit account of overlapping cohorts is shown to affect assessments of persistence in aggregate employment rates.     

Planning for manufacturing technology

It is charged that many U.S. and European manufacturers have neglected to invest in new manufacturing technology. Consequently, these manufacturers have sacrificed their long-range competitiveness. This problem has occurred partly due to the lack of a normal planning process for investment in manufacturing technology that can alert managers to the need for the modernization of manufacturing technology before it is overdue.This article recommends the use of a new approach for manufacturing technology planning based on a process that monitors the deterioration of manufacturing technology over time.     

Optimal Workforce Mix in Service Systems with Two Types of Customers

We consider a service system with two types of customers. In such an environment, the servers can either be specialists (or dedicated) who serve a specific customer type, or generalists (or flexible) who serve either type of customers. Cross‐trained workers are more flexible and help reduce system delay, but also contribute to increased service costs and reduced service efficiency. Our objective is to provide insights into the choice of an optimal workforce mix of flexible and dedicated servers. We assume Poisson arrivals and exponential service times, and use matrix‐analytic methods to investigate the impact of various system parameters such as the number of servers, server utilization, and server efficiency on the choice of server mix. We develop guidelines for managers that would help them to decide whether they should be either at one of the extremes, i.e., total flexibility or total specialization, or some combination. If it is the latter, we offer an analytical tool to optimize the server mix.     

Building a short-term production planning system for flexible manufacturing systems: an integration viewpoint

From the viewpoint of integration, the production objective of flexible manufacturing systems (FMS) should follow results of MRP/CRP. Thus, the planning goal of short-term production planning (STPP) is to satisfy quantity and due date requirements determined by MRP/CRP. The STPP of FMS should cover part type selection, production ratio, process selection, process ratio, resource allocation, machine grouping, routing mix and loading problems.

A STPP system is built to solve the STPP problem of an FMS having multiple machine types, each with multiple m.'ichinc units. This system adopts a variable-period flexible planning approach, using part mix and process selection flexibilities to solve STPP problems. It also provides flexibilities in its operations sequence and in the machine routing to the dynamic operation planning system.     

How the Risk of Displacement for Older Workers Has Changed

Using Blinder–Oaxaca decomposition and relying on the consistent design of the Displaced Worker Survey since 1996, this study analyses various factors contributing to the rising dislocation of older workers, such as changes in tenure, industry mix, educational attainment, and labor force participation. Although in the past older workers were less prone to displacement compared with prime‐age workers, this paper finds that older workers are now more likely to be displaced, conditional on education, manufacturing industry, and tenure. Declining tenure, a higher incidence of displacement in manufacturing, and a higher labor force participation among older workers largely explain the convergence of displacement rates among older and prime‐age workers.     

Alternate Routing Strategies in Batch Manufacturing: An Evaluation

Batch manufacturing firms are experiencing significant changes because of technological developments in work center design, such as flexible manufacturing systems (FMS) and planning/control tools like computer-aided process planning (CAPP). These new developments provide production managers with some solutions to a number of complex problems. For example, numerical-controlled (NC) machine center installations are effective in providing quality parts because of tight tolerance specifications built into the equipment. However, these highly efficient centers create bottlenecks that constrain shop throughput, since production planners tend to rely too much on them. To help improve manufacturing planning, we introduce an important element to the batch production scheduling component of CAPP's mission—evaluating possible alternate routes. Production scheduling encompasses job route selection as well as machine center assignment (loading), job releasing, and setting due dates. In this paper, three routing strategies requiring different levels of shop floor information are tested and evaluated using computer simulation. Shop performance is measured by total cost and traditional measures of job flow time, lateness, and tardiness.     

Corporate planning: A need to examine corporate style

In the current depressed and yet highly volatile economic situation, many companies are finding they lack the skills to tackle their problems. Corporate planning concentrated on issues of organizational structure and product and market mix does not provide the essential answer, and a radical change in corporate style is required. This involves the whole area of management/ employment behaviour and the building of an integrated team dedicated to creating a new organization culture.     

Measuring Dynamic Capabilities: Practices and Performance in Semiconductor Manufacturing

Research on dynamic capabilities emphasizes the importance and role of organizational routines in explaining interfirm differences in performance. While performance differences are well documented, few empirical analyses explore the processes inside organizations that lead to dynamic capabilities or attempt to define and measure their performance effects. This paper examines one type of dynamic capability – the development and introduction of new process technologies in semiconductor manufacturing. This dynamic capability is an important source of competitiveness in the semiconductor industry, given the short product lifecycles, rapid price declines, and rapid technological advances that define the industry. Because much of the knowledge that underpins semiconductor manufacturing is idiosyncratic, firm-level R&D organization and information technology practices that facilitate problem solving and learning-based improvement provide important and enduring advantages. We derive models of the rate of improvement in manufacturing yield (i.e. the quality of production) and cycle time (i.e. the speed of production) following the development and introduction of new process technologies in manufacturing facilities, and test the empirical specifications of these models. The ways in which semiconductor manufacturers accumulate experience and articulate and codify knowledge within the manufacturing environment build new process development and introduction dynamic capabilities that improve performance.     

Information Systems Adaptation and the Successful Implementation of Advanced Manufacturing Technologies*

Few plants have initial success with advanced manufacturing technologies (AMTs), and adaptations are commonly required after installing new technologies. We especially know little about the outcomes of adaptations that manufacturers regularly employ in the context of AMTs. Sociotechnical theory and the technology literature suggest that AMTs commonly require four types of adaptations including those to process technologies, human resources, operational structures, and information systems. This study investigates which of these four adaptations and their interactions lead to improved operational performance. Data were collected on 104 plants that implemented a single type of manufacturing AMT. Findings indicate that information systems (IS) adaptation during the course of AMT implementation was the most important action. Surprisingly, human resource and process technology adaptations were linked to lower performance, and no interactions had any clear effects. The results also show that practitioners underestimated the relevance of IS adaptations during contemporary or “second-generation” AMT implementation projects and overemphasized the need for shop floor changes.     

Population Ageing and the Labour Market: Evidence from Italy

Individual data from eight waves of the European Community Household Panel are used to investigate the impact of cohort size on age‐earnings and employment profiles of Italian male workers. Evidence that over the life cycle cohort size depresses employment opportunities of men with low education and earnings and employment rates of men with intermediate and high qualifications born into large cohorts is found. These results are used to carry out a simple simulation where the average future wages of Italian male workers are projected for the next 4.5 decades. According to this simulation, the wages of Italian male workers will follow a hump‐shaped pattern in the next three decades, before slightly increasing again.     

A structured methodology to implement judiciously the right JIT tactics

In order to enhance the competitiveness and efficiency of manufacturing operations, many companies arc looking at implementing key strategic technologies. Two of the most predominant programs are ‘just-in-time’ and ‘synchronous organizations’. However, their impacts on improving quality and reducing time-to-market have been mixed. It is not very clear why, in some cases, results are poor, when in a similar situation, programmes have proved to work well. There are conflicting reasons reported for such a discrepancy. Some have argued that during J IT implementation either a right mix of tactics was not selected at the outset or the process was not carefully monitored to see whether a mid-course correction or change in tactics was necessary. In order to (a) protect the manufacturing and strategic teams from making the same/similar mistakes and (b) sustain a series of successful activity throughout during the strategic implementation cycle, this paper outlines a structured methodology. The method utilizes a matrix-based procedure to dynamically (over time) measure the effectiveness of a line of JIT tactics against the organization's principles and objectives. The operating procedure suggests first (a) using a method for monitoring the changing conditions of market and business and then (b) using the metrics to guide the management with a new line of tactics that might have better impact on the newly aligned company goals. In an effort to help managers and engineers decide on a proper line of tactics to implement JIT, a line of JIT quality matrices (JQM) is developed. JQM provides a framework to guide group managers to ‘plan, pick and choose’ a set of effective JIT techniques. An approach similar to quality function deployment (QFD) is used to generate the JIT house and their corresponding JQM matrices. With the JQM-based structured methodology, managers can design the best line of JIT strategy blended with JIT theory and adapted to the manufacturing environments in which it is expected to operate.     

乡镇企业产权改革、所有制结构及职工参与问题研究

运用改制企业及其职工问卷调查资料 ,本文研究表明:(1)县以上政府出于财政目标的需要 ,鼓励并主导了乡镇企业产权制度的改革 ,改革具有自上而下推动的特征 ,而并非完全像过去主流观点所认为的那样 ,改革完全是自下而上推动的结论;(2)地方 (社区 )政府、改制企业的原经营者、企业职工及社区全体居民在改革后具体企业产权模式的选择上 ,具有明显的鹰—鸽博弈特征 ,地方社区政府、改制企业的原经营者之间的博弈结果是改革后具体企业产权模式的选择的主要的决定力量。乡镇政府和企业经理共同控制了乡镇企业的改制 ,普通职工只有被动的参与权;(3)乡镇政府和原企业经理均无选择股份合作制的动力;(4)企业职工对于是否持股并不十分积极、其能否持股取决于多种因素;(5)职工对改制企业在激励机制、决策机制、管理机制等方面的进步给予积极的肯定;(6)股权结构对企业生产率影响不明显 ,它表明所有权结构只是生产率提高的必要条件 ,而非充要条件 ,它也不是改革最终走向“经营者持大股"的逻辑原因;(7)企业改制、特别是经营者持大股企业对就业、企业长期投资产生了积极影响 ,改制推进了企业经营水平、市场竞争力的提高。