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Proceedings of the 12th ACM SIGACT-SIGPLAN symposium on Principles of programming languages - POPL '85, 1985
This paper considers current solutions to the problem of representing multiple environments, and uses the results to develop a new model. The motivation is partly a consequence of the renewed interest in the more sophisticated forms of access and control [Sussman & Steele 1978], [Smith 1983]. [Friedman et al.
Julian A. Padget, John P. Fitch
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This paper considers current solutions to the problem of representing multiple environments, and uses the results to develop a new model. The motivation is partly a consequence of the renewed interest in the more sophisticated forms of access and control [Sussman & Steele 1978], [Smith 1983]. [Friedman et al.
Julian A. Padget, John P. Fitch
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Concentrating on Concentration
<span>The US stock market is heavily concentrated in a handful of technology companies, with the "Magnificent Seven" accounting for over 30% of total market capitalization. Many investors and commentators view this as a warning signal, arguing that concentration makes the market riskier and calls for defensive action.Victor Haghani, James White
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Institutions and concentration
Journal of Development Economics, 2006Abstract In a new dataset of 1.3 million firms from over 100 countries, I establish a number of regularities in cross-country differences in economic concentration. Concentration of sales and employment is substantially higher in smaller countries and in less-developed countries; these two factors alone explain roughly half the cross-country ...
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Market Concentration and Concentrations in Retail
2012In the retail industry in Europe there is an ongoing trend of market consolidation by rapid growth of the large international retail companies. Undergoing process of retail market concentration is bringing new challenges to all market participants: suppliers (such as: production industry, wholesalers and logistic companies), existing retailers and ...
Knežević, Blaženka, Jagić, Tea
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Concentrating on the claustrum
Nature Reviews Neuroscience, 2018Two studies show that the claustrum delivers inhibition to different parts of the cortex — the prefrontal cortex and auditory cortex.
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British Journal of Psychiatry, 1966
Introduction“I can't concentrate, doctor” is a common complaint among psychiatric patients. The phrase is usually applied in a general sense to describe a state in which the patient has ceased to read the newspapers or watch the television and can no longer cope adequately with his work.
F G, Spear, R, Green
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Introduction“I can't concentrate, doctor” is a common complaint among psychiatric patients. The phrase is usually applied in a general sense to describe a state in which the patient has ceased to read the newspapers or watch the television and can no longer cope adequately with his work.
F G, Spear, R, Green
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The Journal of Industrial Economics, 1977
DESPITE a decade of study, economists have been unable to agree on advertising's impact on concentration. Telser [I9], [20], Ekelund, Gramm, and Maurice [5], [6], [7] argue that advertising has no effect on concentration. Mann, Henning, and Meehan [I o], [I I], [I2], [I3] contend that the two are intimately connected.
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DESPITE a decade of study, economists have been unable to agree on advertising's impact on concentration. Telser [I9], [20], Ekelund, Gramm, and Maurice [5], [6], [7] argue that advertising has no effect on concentration. Mann, Henning, and Meehan [I o], [I I], [I2], [I3] contend that the two are intimately connected.
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Analysis, 1994
Peter Milne (this issue, [1]) has produced a neat counterexample to my conjecture in [2] that every sequent provable in the system IR of intuitionistic relevant logic is a substitution instance of an intuitionistically valid sequent that has no intuitionistically valid proper subsequent.
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Peter Milne (this issue, [1]) has produced a neat counterexample to my conjecture in [2] that every sequent provable in the system IR of intuitionistic relevant logic is a substitution instance of an intuitionistically valid sequent that has no intuitionistically valid proper subsequent.
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IEEE Security & Privacy Magazine, 2009
Nature takes a variety of approaches regarding risk concentration. Stationary life tends to bend but not break, whereas mobile life tends toward risk concentration with stout border protection. Client and network devices tend to follow the latter model.
Daniel E. Geer Jr., Daniel G. Conway
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Nature takes a variety of approaches regarding risk concentration. Stationary life tends to bend but not break, whereas mobile life tends toward risk concentration with stout border protection. Client and network devices tend to follow the latter model.
Daniel E. Geer Jr., Daniel G. Conway
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Health Affairs, 2017
Provider market power is a powerful driver of high health care costs in the United States. Despite decades of antitrust litigation and regulatory interventions, the problem has worsened and threatens to undermine the benefits of market-based policies. A critical but neglected challenge for all health care reform proposals relying on market competition ...
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Provider market power is a powerful driver of high health care costs in the United States. Despite decades of antitrust litigation and regulatory interventions, the problem has worsened and threatens to undermine the benefits of market-based policies. A critical but neglected challenge for all health care reform proposals relying on market competition ...
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