Patent portfolio analysis of cities: statistics and maps of technological inventiveness

ABSTRACT

Cities can be considered as engines of the knowledge-based economy, because they are the primary sites of knowledge production activities that subsequently shape the rate and direction of technological change and economic growth. Patents provide rich information to analyse the knowledge specialization of specific places, such as technological details and information on inventors and entities involved. The technology codes attributed at the level of individual patent documents can be used to indicate the diversity and scope of the knowledge claims underlying a specific invention. In this study we introduce tools for portfolio analysis in terms of patents that provide insights into the technological specialization of cities. The mapping and analysis of patent portfolios of cities exploits data derived from the Unites States Patent and Trademark Office (USPTO) and dedicated tools (at https://leydesdorff.net/software/patents/). The results allow policy makers and other stakeholders to identify promising areas of further knowledge development, including smart specialization strategies.     

Eine verklungene Novelle Zur Deutung des PSI 725

This paper treats a rhetorical fragment which is preserved in Stobaeus from four points of view. (1) The speech was delivered in Alexandria by a travelling rhetor. (2) There is a philosophical background with a Cynic flavour to this oration, which advocates concord within the city. (3) An analysis of the literary form shows that this text can be regarded as an example of a λαλι?. (4) The date has been very much debated, but a study of the vocabulary makes a date in the second half of the second century A.D. seem plausible.