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The purpose of this paper is to evaluate the tool experiences using torque during welding as a means of in-process sensing for tool wear. Metal matrix composites (MMCs) are materials with immense potential for aerospace structural applications. The major barrier to implementation of these materials is manufacturability, specifically joining MMCs to themselves or other materials using fusion welding. Friction stir welding (FSW) is an excellent candidate process for joining MMCs, as it occurs below the melting point of the material, thus precluding the formation of degradative intermetallics’ phases present in fusion welded joints. The limiting factor for use of FSW in this application is wear of the tool. The abrasive particles which give MMCs their enhanced properties progressively erode the tool features that facilitate vertical mixing and consolidation of material during welding, resulting in joints with porosity. While wear can be mitigated by careful selection of process parameters and/or the use of harder tool materials, these approaches have significant complexities and limitations.

This study evaluates using the torque the tool experiences during welding as a means of in-process sensing for tool wear. Process signals were collected during linear FSW of Al 359/SiC/20p and correlated with wear of the tool probe. The results of these experiments demonstrate that there is a correlation between torque and wear, and the torque process signal can potentially be exploited to monitor and control tool wear during welding.

Radial deterioration of the probe during joining of MMCs by FSW corresponds to a decrease in the torque experienced by the tool. Experimentally observed relationship between torque and wear opens the door to the development of in-process sensing, as the decay in the torque signal can be correlated to the amount of volume lost by the probe. The decay function for tool wear in FSW of a particular MMC can be determined experimentally using the methodology presented here. The decay of the torque signal as the tool loses volume presents a potential method for control of the wear process.

This work has near-term commercial applications, as a means of monitoring and controlling wear in process could serve to grow commercial use of MMCs and expand the design space for these materials beyond net or near-net-shape parts.

To investigate the relationship between the choice of integrated or functional logistics providers by Brazilian shippers and: the type of their manufacturing process structure, and the level of sophistication of their logistics function, as well as the impact on that choice of possible interactions between these two characteristics of the shippers.

Data were collected in a comprehensive survey on the use of 3PL service providers in Brazil using a sample of 93 large Brazilian shippers; The analysis tests three research questions on the individual and combined relationships of logistics sophistication, measured on a logistics sophistication index (LSI), and process type (according to Goldratt's V‐A‐T classification for materials flow analysis) with the choice of type of 3PL provider; the methods of analysis were cluster and logistics regression analysis.

The paper finds: support for an association of sophisticated logistics functions and a preference for integrated 3PLs; support for an association between the A‐type production process structure and preference for integrated 3PLs; and of V and T types for functional 3PLs. However, it also finds that shippers with type T process structure and more sophisticated logistics tend to favor integrated 3PLs.

One limitation is that logistics performance is not considered; future studies may further refine the proposed framework for segmentation.

The paper advocates the use of models by providers to segment their customers, and better understanding by shippers of prevailing trends in logistics outsourcing according to their process structure and characteristics of their logistics function.

The paper unveils significant relationships between shipper sophistication of logistics function, manufacturing process structures, and the choice of type of 3PL. It also proposes a new framework for segmenting the 3PL service provider market in terms of sophistication of the logistics function and the logistics task implied by the type of operation.

A number of attempts have been made to develop theories in operations management (OM) (e.g. trade‐off theory by Skinner, customer‐contact model by Chase and Tansik, product‐process matrix by Hayes and Wheelwright). Researchers in OM acknowledge that there is no widely‐accepted theory on which OM rests or which serves as a unified OM theory to integrate existing theory‐like principles or informal theories. Constraints management (CM) has been developed over the past 20 years by consultants and practitioners but has received little attention from OM researchers. The authors believe that constraints management may serve as a broad theory within operations that will allow integration of a great deal of existing OM research. The main objectives of this paper are to propose a construct, throughput orientation, discuss its core dimensions, and develop a theoretical model of CM. The paper also suggests several hypotheses that might be empirically tested to establish CM as a recognized theory in the field of operations management. The paper concludes with suggestions for future research.

Previous research has focused on identifying factors that influence buyers who uses price as a cue to quality. However, little work has been done to explain the theory of association and the psychological processes behind the buyer’s price‐quality association. This study examines the process from a psychological perspective and examines some antecedent variables in the formation of a price‐quality inferential belief. Data is collected for two product categories among a sample of young respondents. Results show that (1) the link between perceptual and inferential belief about the price‐quality association is stronger when the perceptual belief is based on direct purchase experience rather than on advertising; (2) buyers that lack direct purchase experience of a product category tends to rely on advertising to form their inferential belief. Implications are discussed, limitations are noted and directions for future research are indicated.

In this paper, the main objective will be to discuss the factors which can influence the usage of risk reducing strategies found in the literature over the past 30 years. Some of the factors which have relatively consistent effects include age, socio‐economic group, education while other factors show complex effect e.g. self‐confidence, loss‐type and product risk. On the whole, the literature on risk reduction and how it is affected is unable to provide would‐be researchers with clear guidance for questionnaire construction and research design.

The purpose of this paper is to suggest that the theory of constraints (TOC) can serve as a general theory in operations management. The paper first investigate linkages between TOC and the core concepts/components of operations management (OM) and show how OM concepts can be integrated with TOC using examples from the published TOC literature. A second important purpose is to show that TOC, as a theory, has properties essential for a good theory.

Using a commonly accepted categorization of operations decisions (process, quality, inventory and capacity), traditional views, and approaches to operations decisions to those inherent in the TOC are compared.

The paper concludes that the TOC provides approaches to operations decisions that avoid pitfalls of local optimization by reaching across functional boundaries in organizations. In addition, while the TOC appears to meet the criteria of a good theory, it has not been empirically tested for the most part.

The TOC can serve as a unifying theory or theme for operations management, providing new insights for researchers and an organizing principle for teachers.

This article presents the results of a survey of 202 male Taiwanese consumers. In this study, consumer judgements of two technological products varying in their level of complexity made in highly, moderately, and newly industrialised countries were obtained in a multi‐attribute context. The results show that the country‐of‐origin image of moderately and newly industrialised countries was less negative for technologically simpler products (i.e. a television) than they were for technologically complex products (i.e. a computer). It appears that the negative image of moderately and newly industrialised countries can be attenuated by making Taiwanese consumers more familiar with products made in these countries and/or by providing them with other product‐related information such as brand name and warranty. Newly industrialised countries were perceived more negatively as countries of design than as countries of assembly, especially in the context of making technologically complex products. The image of foreign countries as producers of consumer goods was positively correlated with education. The more familiar consumers were with the products of a country, the more favourable was their evaluation of that country. Consumer involvement with purchasing a technologically complex product such as a computer was positively associated with the appreciation of products made in moderately industrialised countries. Managerial and research implications are derived from these results.

Although the number of higher education institutions adopting sustainability-focused faculty learning communities (FLCs) has grown, very few of these programs have published evaluation research. This paper aims to report findings from an evaluation of the University of Vermont’s (UVM’s) sustainability faculty fellows (SFF) program. It discusses how utilization-focused program evaluation is an important tool for developing and improving sustainability-focused FLCs. The SFF program aims to enhance sustainability education by bringing faculty members together to expand their knowledge of sustainability concepts and offer pedagogical support for integrating those concepts in higher education curricula.

A utilization-focused evaluation framework guided the evaluation’s design and implementation. Multiple methods were used to collect evaluation data, including in-person interviews and an online survey with SFF program participants.

The evaluation’s findings suggest that UVM’s SFF program expanded faculty understanding of sustainability concepts, encouraged curricular and instructional reform and made progress toward developing a community of faculty interested in sustainability education. The evaluation’s utilization focus was instrumental in providing useful information for improving the SFF program.

Evaluation findings expand what we know about the potential effectiveness of sustainability-focused FLCs, as well as challenges institutions might encounter when adopting such an approach to faculty development. Findings also point to ways in which utilization-focused evaluations can inform program development and improvement efforts.

This paper aims to draw conclusions about the likelihood that Securities and Exchange Commission (“SEC”) Chairman Christopher Cox will take significant action to reduce regulation affecting hedge funds based on how the SEC has dealt with hedge fund regulation in both the rule making and enforcement arenas since Mr. Cox became Chairman.

Assesses actions taken by the SEC under Mr Cox's leadership with regard to PIPE (private investment in public equity) transactions by hedge funds, hedge fund registration rules, portfolio disclosure requirements, and alleged collusion among short‐selling hedge funds, research firms, and journalists.

The SEC's enforcement activities with respect to hedge funds that make short sales before the announcement of a PIPE transaction indicate that the SEC has no plans to lighten the regulatory or enforcement burden on hedge funds. The SEC's response to the DC Circuit Court's decision striking down the hedge fund registration rule likewise indicates that additional hedge fund regulation remains an SEC priority. While it remains to be seen how the SEC investigations and civil actions regarding the alleged collusion between short‐selling hedge funds, research firms and journalists will turn out, it appears unlikely that Chairman Cox will take any bold action to protect freedom of expression and the marketplace of ideas from attacks by disgruntled companies.

Provides a timely and insightful view of the near‐term outlook for SEC regulatory and enforcement policy toward hedge funds.