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A Per-seat license is a software license based on the number of individual users who have access to the software. For example, 50-user per-seat license would mean that up to 50 individually named users can access the program (compare named user licensing〔 〕). Per seat licensing is administered by providing user-level security to the directory containing the program. The alternative is a concurrent user license, based on the number of simultaneous users—regardless of which individuals they are—accessing the program. It typically deals with software running in the server where users connect via the network. For example, in a 50-user concurrent use license, after 50 users are logged on to the program, the 51st user is blocked. When any one of the first 50 logs off, the next person can log on. Concurrent licensing can be managed by the application itself or via independent software metering tools. Per seat licensing often imposes restrictions on the users. A user may be a person, software or device accessing the software. User licenses may be differentiated by user types, as authorized users, external user, internal user, qualified user, etc. User types to be taken into account are determined by the licensing requirements.〔(【引用サイトリンク】url= http://omtco.eu/references/sam/top-200-sam-terms-a-glossary-of-software-asset-management-terms/ )〕 Per-seat licensing is common for products used by specialised professionals in industrial settings. In addition to computer programming, typical examples include chemists,〔"Finding an oasis in the desert of bioinformatics" Jeffrey Thomas and David K. Stone (BIOSILICO v. 1, Issue 2, 2 May 2003, p. 56-58 ) 〕 molecular biologists,〔"Gene expression databases and data mining " (Biotechniques ) 2003 〕 geographers,〔"Implementing functions for spatial statistical analysis using the R language" (Journal of Geographical Systems ) Volume 2, Number 3 / September, 2000 p. 307-317 〕 and designers.〔"Data Security for Web-Based CAD" Stephen Knol, Scott Hauck (Proc. of the Design Automation Conference, 1998 ) pp. 788-793〕 Per-seat licensing usually only applies to intellectual property, but in February 2001, per-seat licensing was applied to the real-world as part of a traveling art installation at various museums and art galleries, starting with San Francisco Art Institute (SFAI).〔(Leonardo 36(1), 2003, pp19-26 ), The International Society for the Arts, Sciences and Technology, MIT Press〕 In this exhibit, seating was equipped with retractable spikes, the spikes retracting when payment was inserted. Various licensing schemes were offered, including a floating license which would allow the owner of the license to sit on any ONE (i.e. not be able to share the seating license) of the Internet-connected chairs; the license only allowed one set of spikes to retract at-a-time, thus creating a floating license to real physical objects (e.g. seating, and various other physical objects).〔(CA 2325569 (Canadian Patent) )〕 == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Per-seat license」の詳細全文を読む スポンサード リンク
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