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The control of weld penetration in gas tungsten‐arc welding (GTAW) is required for fully automated systems to overcome variations in the welding process. The surface depression of weld pool, or weld pool height, has a close relationship with width of the backside bead in the full‐penetrated weld. The purpose of this paper is to inspect the pool height.

A fast linear approach, based on shape from shading (SFS) algorithm, was employed to reconstruct a 3D shape of welding pool from a 2D image, which was obtained from a real welding pool. Then the pool height can be extracted. Furthermore, three methods were introduced to improve the above algorithm.

The reconstructed pool height was in good agreement with the real height of weld pool from experiments.

The algorithm requires a uniform reflection on the pool surface.

This method is applicable to inspect weld pool height in GTAW. It is a basis for future work on control of weld penetration.

A faster SFS algorithm has been introduced to extract weld pool height in real‐time. Moreover, the algorithm was improved to fit for extracting the surface shape of weld pool.

The experience of the writer is that defects in swimming pools, particularly the small private pool, often originate from the way in which the contract was entered into; that is, by a wrong approach to the problem of ‘getting the pool built’. Therefore some comments on pre‐contract procedure are given before a detailed discussion of the more common defects which are likely to be found in the types of pool covered by this paper. These are:

Based on the resource‐based view of the firm, this study aims to examine antecedents and outcomes of firm‐specific marketing capital pool invested by marketers in a transition market, Vietnam.

A sample of 528 marketers in Ho Chi Minh City was surveyed to test the theoretical model. Structural equation modelling was used to analyze the data.

It was found that firm‐specific marketing capital pool had positive impacts on both job attractiveness and job satisfaction. The impacts of human marketing capital and relational marketing capital pools on firm‐specific marketing capital were significant. Finally, the relationship between job attractiveness and job satisfaction, and the relationship between human marketing capital pool and relational marketing capital pool were also significant.

A key limitation of this study is the examination of only two antecedents of firm‐specific marketing capital pool: human and relational marketing capital pools.

The results of this study suggest that firms should establish people management policies and practices that motivate marketers to invest more in firm‐specific marketing capital to enhance job attractiveness and job satisfaction of marketers. Also, in order to improve firm‐specific marketing capital, recruiting marketers with high levels of human and relational marketing capital pools is a priority.

The study investigates the role of human resources at the marketing professional level in job attractiveness and job satisfaction in a transition market.

This paper aims to introduce a series of experimental results which are the extension of our previous novel observations (Xie et al., Soft Matter, 2011), which could be helpful for revealing the lubrication failure mechanism in bearings when they are exposed to an electrical environment.

An experimental apparatus where a ball was in contact with a glass disk coated with a semi-reflective chromium layer. A small volume of oil droplet was put into the microgap of the ball-disk contact. Then, a potential was applied onto the oil micropool formed by the droplet surrounding the contact region.

It has been found that destabilization of the low-conducting oil micropool around the contact region could be induced after applying a potential. Thin oil films could be drained out of the oil pool and spread on the tribopair surfaces, resulting in the depletion of the oil pool. When the applied potential was increased, the occurrence of spreading would be easier and its development would be more obvious. In contrast, the electrospreading behavior would be suppressed when the oil viscosity, contact load and oil pool size were increased. Thermocapillary force due to thermal effect as a result of the current flow near the oil pool border has been proposed as the main driving force for the spreading behavior. The influences of the operating parameters have been ascribed to the change of the electric current near the oil pool border as well as the corresponding variations in the temperature rise and the surface tension of the oil pool.

This is the first study to directly observe that the lubricant oil micropool around the contact region could deplete after applying a potential, potentially resulting in oil starvation in the contact region.

This chapter argues that the Marxian theory of exploitation underlies the concepts of surplus and deficit industries that appear in Sraffa’s (1960) Production of Commodities by Means of Commodities. This is seen from archival research of the unpublished papers of Piero Sraffa housed at the Wren Library, Trinity College, University of Cambridge. There it is shown that the origin of these concepts lies in the Marxian theory of exploitation that Sraffa developed regarding the notion of the ‘pool of profits’ the Italian economist utilized over a 14-year period from 1942 to 1956. The chapter engages in an extensive textual study of the archival evidence and then presents a simple analytical model of these relations.

Purpose – This chapter examines the licensing behavior of patent pools when they are unconstrained by antitrust rules.

Design/methodology/approach – Patent pools allow competing firms to combine their patents and license them as a package to outside firms. Regulators today favor pools that license their patents freely to outside firms, making it difficult to observe the unconstrained licensing strategies of patent pools. This chapter takes advantage of a unique period of regulatory tolerance during the New Deal to investigate the unconstrained licensing decisions of pools. Archival evidence suggests that – in the absence of regulation – pools may not choose to license their technologies.

Findings/originality/value – Eleven of twenty pools that formed between 1930 and 1938 did not issue any licenses to outside firms. Three pools granted one, two, and three licenses, respectively, to resolve litigation. Six pools issued between 9 and 185 licenses. Archival evidence suggests that the pools studied in this chapter used licensing as a means to limit competition with substitute technologies.

A study of the price discounts granted by Morton Salt Company and other producers of table salt in the U.S. on their sales of table salt to grocery wholesalers and retailers. The discounts were found to be illegal under the Robinson-Patman Act by the Federal Trade Commission and the Supreme Court. The Commission and the Court believed that the discounts were unjustified price concessions granted to “large” buyers, consistent with the concerns of the Robinson-Patman Act. However, the evidence indicates that the most common discount – the “carload discount” – was received by virtually all buyers, regardless of the buyer’s size; the other discounts – “annual volume” discounts – though received primarily by “large” buyers, were likely cost based. The history of the discounts and likely reasons why they were granted are explored in detail.

Purpose: We generally ascribe hospitality industry talent shortages to organisations competing for dwindling talent rather than their inability to sustain industry talent pools. This chapter suggests that developing sustainable talent management and development (STMD) initiatives can address the talent attraction and retention issues the industry is facing. Following Ostrom’s (2002) design principles, we advocate for sustainable common pool resource networks as a solution for developing durable STMD initiatives to address talent shortages within the hospitality industry.

Methodology: A conceptual chapter synthesising disparate theories in a new context.

Findings: Despite hospitality organisations’ continued investment in talent management, talent shortages remain systematically embedded within the industry. These are the result of a perennial competition among hospitality firms for talent, when, instead, these firms should engage in collective efforts to sustain industry talent pools. The adoption of a more sustainable approach by incorporating Ostrom’s (2002) design principles to establish long-lasting common talent pool resource in the form of industry rather than firm-level talent pools may halt the decline in available talent.

Research Limitation/Implications: While hospitality organisations have a vested interest in sustainably managing talent, limited attention has been paid to creating sustainable industry talent pools. We propose several design principles for developing durable STMD initiatives, which require empirical testing.

Practical/Social Implications: We address talent shortages for hospitality organisations by offering the blueprint for developing sustainable industry talent pools for a collection of firms, which, on their own, would lack the experience and resources to securing a steady supply of talent. In addition, industry talent pools also have the potential to improve the general working conditions for employees in this industry pool.

Originality/Value of Chapter: This chapter addresses hospitality industry talent shortages by proposing the creation of sustainable regional industry talent pools rather than focussing on firm-level talent management practices.

This paper aims to investigate the influence of nonuniform gas speed across the build area on the melt pool depth during laser powder bed fusion. This study focuses on whether a nonuniform gas speed is a source of process variation within an individual build.

Parts with many single-track laser scans were printed and characterized in different locations across the build area coupled with corresponding gas speed profile measurements. Cross-sectional melt pool depth, width and area are compared against build location/gas speed profiles, scan direction and laser scan speed.

This study shows that the melt pool depth of single-track laser scans produced on parts are highly variable. Despite this, trends were found showing a reduction in melt pool depth for slow laser scan speeds on the build platform near the inlet nozzle and when the laser scans are parallel to the gas flow direction.

A unique data set of single-track laser scan cross-sectional melt pool measurements and gas speed measurements was generated to assess process variation associated with nonuniform gas speed. Additionally, a novel sample design was used to increase the number of single-track tests per part, which is widely applicable to studying process variation across the build area.

This study analyzes small-sized asset owners’ optimal choice problems in selecting an outsourced chief investment officer (OCIO). While large-sized asset owners can select OCIOs through procurement auctions, it is difficult for small-sized asset owners to use this method. Instead, they access OCIO services by participating in an investment pool or utilizing OCIO funds. In this study, the authors compare the two OCIO selection methods. The authors construct an agent-based model for OCIO selection to reflect the heterogeneity in production efficiency and preferences. The results of this study imply that when the market has enough investment pools, the utility of all small-sized asset owners increases. To enhance the growth in the OCIO market, the investment pool should represent the preferences of small-sized asset owners and enable individual owners to find an appropriate OCIO.