Data for the Design of Portal Roof Frames

". . . as to the knowledge that they (i.e. relaxation methods) presume, the answer is that we have regarded no problem as solved until, for the actual computations, no more than the first four rules of arithmetic is required. What is of greater importance, even though a computer may not comprehend the theoretical basis of his calculations he will have, throughout, a mental picture of what he is doing; he will see his task as that of bringing unaccounted or 'residual' quantities within a specified margin of uncertainty. Whether regarded philosophically or practically, this is the essential feature by which the new mathematics differs from the old; it is 'mathematics with a fringe.'" PROFESSOR R. V. SOUTHWELL (Ref. 7)

从1944年4月2日在莱斯特授予的高速公路工程师机构的总统讲话中的摘录。当朱利叶斯·凯撒（Julius Caesar）在这个国家登陆时，这只是突击队突袭的本质，直到朱利叶斯的胜利直到阿格里科拉（Agricola）从公元78年到84岁，将罗马边境带到了罗马文明的作品之后。人口被归为由约克和林肯等城市组成的，这些城市由自己的市政官员管辖，被巨大的墙壁守卫，并由路线网络连接在一起，该网络从岛上的一端延伸到另一端。这些道路是作为军事高速公路建造的，以使被征服的人屈服。但是后来有一定数量的商业涌入，农产品，康沃尔郡矿山的锡，萨默塞特郡和诺森伯兰郡的矿山，迪恩森林矿山的铁被出口到高卢的必要性。城镇和国家都被税收所压碎，矿山是由强迫劳动而制造的。乔治·麦克莱恩·吉布森

BEFORE we can discuss the design of the Coal Staith and, for the benefit of those who are not familiar with Power Station layout, some idea must be given of the method employed to keep the Station supplied with the necessary fuel. G.M. Frost