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61.
Capacity planning is one of the most important elements for an efficient production planning and control system. It is even more important when the main strategies to fulfil sales requirements are make-to-order (MTO) or assemble-to-order (ATO). Neither MTO or ATO companies keep finished products in stock which means that production level is driven by actual sales figures. Therefore, it is very important to have an available capacity as flexible as possible to meet sales requirements. Annualized hours (AH) is a work time control system that helps in increasing the flexibility of available capacity. The main rule of the AH system is to hire employees to work a certain number of hours on a yearly basis. Following some other pre-defined rules and limits, the AH system allows a company to adjust weekly available time in order to reduce idle capacity or to fulfil requirements that could mean overtime. This paper proposes a linear programming model to plan the operations using AH. This model has been implemented in a company that produces agricultural implements, showing that it is very simple to use. It is producing excellent practical results. 相似文献
62.
Based on a unique dataset covering 84 institutions operating in 15 countries this paper provides evidence as to the impact of foreign ownership on microfinance sustainability and outreach in Latin America. Overall, we find that foreign-owned microfinance institutions have more borrowers than domestic-owned institutions. This suggests that foreign investors, mainly development finance institutions and other investors with close ties to the microfinance industry, exert governance in line with their stated policy goal: expanding financial inclusion among microentrepreneurs and poor households. In contrast to this, majority ownership of foreign investors neither provides a strong push towards the sustainability of microfinance institutions nor does it lead to “mission drift”, i.e. microfinance institutions issuing larger loans to comparatively wealthier clients. 相似文献
63.
This paper analyzes the impact of vertical integration, age, geographic expansion, and low price strategy on the cost efficiency of retail stores. We test our hypotheses using the innovative Bayesian frontier methodology. The data involve a sample of Spanish retail stores that operate in a highly competitive and dynamic environment. From the results, it is clear that cost efficiency is higher for stores that have: longer years in business, stronger geographical presence, and lower price offerings. Vertical integration, on the other hand, is negatively related to efficiency. Further discussions of these findings and related managerial implications are provided in the paper. 相似文献
64.
Robert Collins Professor of Manufacturing Management Carlos Cordón Professor of Operations Management Denyse Julien Research Associate 《European Management Journal》1996,14(6):576-589
Many executives are currently striving to develop world-class manufacturing operations to ensure that they remain competitive in increasingly global markets. To do this, they are adopting a range of practices, from organisational changes such as empowerment and teamwork to the use of techniques such as pull production. Their goal is to substantially improve performance: faster cycle times, reduced manufacturing costs and greater customer satisfaction.The question of how far companies have moved towards world-class manufacturing is at the heart of the ‘Made in Switzerland’ project, a major benchmarking study of Swiss manufacturing practice and performance. The study was carried out in 1995 by IMD faculty and researchers working with consultants from IBM Switzerland. It is part of the internationally-based ‘Made in Europe’ project comprising similar studies in the UK, Germany, The Netherlands and Finland.The central hypothesis of the studies is that the adoption of best practice leads to high performance. The objective is to establish a benchmarking database for participating manufacturers around the world. The studies, which are highly structured, examine six areas of manufacturing practice and performance in detail and assess the relationship between them at individual plants. The areas covered in the study are quality, organisation and culture, concurrent engineering, logistics, lean production and manufacturing systems.Plants in each country are grouped according to their position on the practice and performance indices and then studied in order to pinpoint the issues and challenges facing the manufacturers within that group. Less than three per cent of the 800 plants currently on the ‘Made in Europe’ database are considered ‘world-class’. Yet for manufacturers striving to reach this level of performance, this small minority can provide some valuable insights for the way ahead.This article discusses many of the issues raised by the analysis described above, with particular reference to the ‘Made in Switzerland’ study. In the first section, it looks at the key lessons arising from the Swiss study and what insights these can provide for manufacturers, not only in the Swiss market, but across Europe. In the second section, it looks at how the study can be used for benchmarking and provides manufacturers with some general recommendations to help them focus their improvements and move closer to becoming world-class. 相似文献
65.
Applications of multivariate statistics in engineering are hard to find, apart from those in quality control. However, we think that further insight into some technological cases may be gained by using adequate multivariate analysis tools. In this paper, we propose a review of the key parameters of rotating electric machines with factor analysis. This statistical technique allows not only the reduction of the dimension of the case we are analysing, but also reveals subtle relationships between the variables under study. We show an application of this methodology by studying the interrelations between the key variables in an electric machine, in this case the squirrel-cage induction motor. Through a step-by-step presentation of the case study, we deal with some of the topics an applied researcher may face, such as the rotation of the original factors, the extraction of higher-order factors and the development of the exploratory model. As a result, we present a worthwhile framework to both confirm our previous knowledge and capture unexplored facts. Moreover, it may provide a new approach to describing and understanding the design, performance and operating characteristics of these machines. 相似文献
66.
Eduardo de la Fuente 《Journal for the theory of social behaviour》2014,44(2):168-185
This paper argues that an explanation of the role of aesthetic patterning in human action needs to be part of any “qualitative” social theory. It urges the social sciences to move beyond contextualism and to see art as visual, acoustic and other media that lead to heightened sensory perception and the coordination of feelings through symbols. The article surveys the argument that art provides a basic model of how the self learns to interact with external environments; and the complementary thesis that art could be seen as integral to the emergence of systems of human knowledge, communication and economy. Ornamentation and stylization are advanced as two concrete devices through which human attention is captured and experience is ordered through aesthetic patterns. The conclusion is drawn that art offers the social sciences a meaningful account of the perceptual or “qualitative” dimensions of social interactions; and that this is much needed today. 相似文献
67.
The residential and social segregation of whites from blacks creates a socialization process we refer to as “white habitus.” This white habitus limits whites' chances for developing meaningful relationships with blacks and other minorities spatially and psychologically. Using data from the 1997 Survey of College Students' Social Attitudes and the 1998 Detroit Area Study, we show that the spatial segregation experienced by whites from blacks fosters segregated lifestyles and leads them to develop positive views about themselves and negative views about blacks. First, we document the high levels of whites' residential and social segregation. Next, we examine how whites interpret their own self‐segregation. Finally, we examine how whites' segregation shapes their racial expressions, attitudes, cognitions, and even their sense of aesthetics as illustrated by their views on the subject of interracial marriage. 相似文献
68.
Prior to 2007, two systems of bus driver compensation coexisted in Santiago, Chile: one paid drivers per passenger transported, while the other paid a fixed wage. Per‐passenger drivers engaged in “The War for the Fare,” altering their driving patterns to compete for passengers. Examining these systems on similar routes in Santiago, we observed two key findings. Compared with the fixed‐wage system, the per‐passenger system leads to (1) 13% shorter passenger wait times, via reduced bunching of buses and (2) 67% more accidents per kilometer driven, via more aggressive driving. We discuss implications for the design of incentives in public transit. (JEL L92, M52, R41) 相似文献
69.
70.
The state is a contested concept in the historiography on early medieval societies. Debates have frequently revolved around its heuristic validity, but few scholars have addressed its broader theoretical implications. Those who have tend to reduce the state to its institutional features and privilege the role of the dominant groups in the analysis of state-building processes and the workings of the state. This paper contends that a richer conceptualisation of the state can overcome the limits of the debate as it has been framed so far and provide a deeper insight into how social relations shaped and were shaped by the development of early medieval polities. After reviewing the most significant historiographical contributions to the debate, the paper introduces the Strategic-Relational Approach to the state, as formulated by B. Jessop, as one that can provide a more nuanced understanding of early medieval polities. Particular emphasis is made on the analysis of class relationships and the articulation of hegemonic projects as two particularly fruitful lines of inquiry. Finally, the paper focuses on one particular instance of early medieval political practice, the politics of the land, as a means to illustrate the potential of the approach. 相似文献