Braude R M, Holt N
Bull Med Libr Assoc. 1971 Jan;59(1):65-70.
The need for a cost-performance analysis of TWX-mediated versus mail-mediated ILL requests is presented. Three hypotheses are proposed: (1) Unit cost for TWX-mediated ILL requests is greater then for mail-mediated ILL requests; (2) Completion time is shorter for TWX-mediated ILL requests than for mail-mediated ILL requests; (3) An analytic model can be developed that can be used to generate administrative data concerning a TWX installation. The data presented support all three hypotheses. It is shown, also, that through the use of this model a library can arrive at a cost for service of TWX versus mail-mediated ILL.
提出了对通过电传打字交换（TWX）介导与邮件介导的馆际互借（ILL）请求进行性价比分析的必要性。提出了三个假设：（1）TWX介导的ILL请求的单位成本高于邮件介导的ILL请求；（2）TWX介导的ILL请求的完成时间比邮件介导的ILL请求短；（3）可以开发一个分析模型，用于生成有关TWX装置的管理数据。所呈现的数据支持所有这三个假设。还表明，通过使用该模型，图书馆可以得出TWX与邮件介导的ILL服务的成本。
