This paper describes the development of a novel automated vision system used to detect the visual defects on painted slates.
The vision system that has been developed consists of two major components covering the opto‐mechanical and algorithmical aspects of the system. The first component addresses issues including the mechanical implementation and interfacing the inspection system with the development of a fast image processing procedure able to identify visual defects present on the slate surface.
The inspection system was developed on 400 slates to determine the threshold settings that give the best trade‐off between no false positive triggers and correct defect identification. The developed system was tested on more than 300 fresh slates and the success rate for correct identification of acceptable and defective slates was 99.32 per cent for defect free slates based on 148 samples and 96.91 per cent for defective slates based on 162 samples.
The experimental data indicates that automating the inspection of painted slates can be achieved and installation in a factory is a realistic target. Testing the devised inspection system in a factory‐type environment was an important part of the development process as this enabled us to develop the mechanical system and the image processing algorithm able to perform slate inspection in an industrial environment. The overall performance of the system indicates that the proposed solution can be considered as a replacement for the existing manual inspection system.
The development of a real‐time automated system for inspecting painted slates proved to be a difficult task since the slate surface is dark coloured, glossy, has depth profile non‐uniformities and is being transported at high speeds on a conveyor. In order to address these issues, the system described in this paper proposed a number of novel solutions including the illumination set‐up and the development of multi‐component image‐processing inspection algorithm.
The primary and secondary market activity in collectible sportscards has evolved into that of a primitive, but organised financial market. This report reviews some aspects…
The primary and secondary market activity in collectible sportscards has evolved into that of a primitive, but organised financial market. This report reviews some aspects of the collectible sportscard market. The objective of the report is to introduce the sportscard investment medium to finance professionals, including those interested in the research potential of the market. The report includes an empirical analysis of the performance of some selected sportscard portfolio strategies for the period between March 1988 and December 1993. Sportscard collecting has evolved from an adolescent hobby of the 1950s into an active national market, estimated to involve approximately $5 billion and 3 million persons and served by a network of dealers and price information suppliers. The evolution of the sportscard market into its current state is described in this presentation. The description includes an empirical analysis of the performance of some selected sportscard portfolio strategies for the period between March 1988 and December 1993. The objective of the report is to provide information to those considering collectible sportscards as an investment medium and to those who might be interested in conducting financial research with collectible sportscard pricing data.
THE importance of the book as an educational agency has so long been recognized, that it will be unnecessary for me to dwell upon that side of the question. Yet it is impossible to ignore it altogether, for it is in the educational power of the book that we find the main reason for the existence of the school library. The elementary schools carry education up to a certain point, and the technical schools and universities take it up and carry it still further, but it is the library—or at any rate the book—which co‐ordinates the whole ; many people, indeed, have no education beyond the elementary school, except what they obtain from books. From this, the part played by the school library becomes obvious. Not only is it a powerful educator in itself, but it prepares the individual for the use of the Public Library and of books in general in the period following school life. Also, I need hardly point out that, although the use of the text‐book is dis pensed with as far as possible, the whole modern system of teaching is founded on the use of books.
Societies may differ in their views as to what constitutes corruption, although the concept finds universal manifestations. Experts have different perspectives on the…
Societies may differ in their views as to what constitutes corruption, although the concept finds universal manifestations. Experts have different perspectives on the meaning, causes and effects of this universal phenomenon. While a few take an inter‐disciplinary approach, positions are more often influenced by the respective discipline. The literature on the subject is vast and diversified. Any attempt to summarize it here would not do it justice. It may be useful, however, to begin this paper by sharing with the reader some of the main findings based on that literature.
This case uses Uber Technologies Inc. to engage students in a serious conversation about how a firm both affects its stakeholders and is affected by its stakeholders as well as the role of strategic leadership in the amount of emphasis placed on ethical practices. Uber represents a visible high-growth startup that has received considerable positive and negative attention in the media; however, few people know of the extent of its aggressive management approach. Much of the publicity about Uber is both a direct consequence of and a direct consequence for stakeholder relationships. Students are asked to analyze Uber’s approach and offer suggestions for moving forward.
This case was created using secondary data sources. The issues for Uber that led the authors to write this case were not very flattering to Uber, and therefore, the authors decided to use secondary sources. Since Uber and many of its direct competitors were private companies, the authors collected as much financial data as the authors could from publicly available sources. Also, due to the contentious nature of some of the managerial tactics used within Uber, the use of secondary data sources was warranted.
Relevant courses and levels
This case was crafted with senior undergraduate students in strategic management as the primary audience, but is also relevant for MBA-level strategy courses as well. This case touches upon core content in the vast majority of undergraduate strategic management courses with a special emphasis on two concepts underrepresented in most strategic management textbooks, stakeholder theory and ethical decision making.