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This paper examines the unique functions of corporate headquarters in diversified firms and reports on a survey of the structure and staffing of more than 600 headquarters in Europe, the United States, Japan, and Chile. It explores the extent to which corporate headquarters are contingent on size of the company, corporate strategy (corporate portfolio and corporate structure and policies), and governance system (ownership and regulation, and country of origin). The results confirm that factors in each of these areas are important determinants of the size and structure of headquarters. Performance data suggest that these findings are not merely descriptive but that corporate headquarters should be designed to fit the corporate strategy. Although the results are capable of alternative interpretations, analysis provides no support for the view that 'lean and mean' headquarters lead to better performance.

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A practical system of classification and nomenclature for the Phlebotomine sandflies of the world is suggested, in the light of a re-examination of the early taxonomic literature and a critical appraisal of recent studies. A stable and simple classification of the sandflies as the subfamily Phlebotominae, family Psychodidae, is given, in which are recognized only five genera but a larger number of subgenera, species groups and lesser, informal, categories.The various groupings, many of which are discussed, are considered t o form a stable general framework with flexible subdivisions into which recent and future ideas may be assimilated. The system should cause minimum confusion and give maximum ease of data-retrieval t o taxonomists and other scientists concerned with the classification of sandflies for pure or applied purposes.