Territorial Capital: Theory,Empirics and Critical Remarks

Territorial capital has gained considerable attention in the past few years. The aim with this work is to throw light on some underlying aspects of territorial capital research. The study focuses on the theoretical and empirical issues of territorial capital and highlights some critical remarks related to the topic. On the one hand, the focus of the study is on the comparison of concepts and approaches in connection with territorial capital; then an in-depth look is taken at “capital frameworks” related to the research field. On the other hand, a comprehensive overview is presented of empirical investigations by comparing the applied methods, dimensions and variables of territorial capital. An argument is also made for a critical assessment concerning the topic with regard to the sense and function of territorial capital in regional economics and local economic development and highlights some further dilemmas concerning the “properties of capital” and “territorial capital paradigm”. Finally, some suggestions are provided for the future of territorial capital analysis. The main result of the study is an own belief in the concept of territorial capital.     

Notices—notes de lecture

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Het hof van Gelre. Cultuur ten tijde van de hertogen uit het Gulikse en Egmondse huis (1371–1473), Gerard NIJSTEN, Kok Agora, Kampen 1992. 503 p., ill, Zusammenfassung, ISBN 90–391–00578. fl.89,‐

Richelieu and his Age, Joseph BERG1N et Laurence BROCKUSS éds, Oxford, Clarendon Press, 1992, xvii + 288 p.

Recent verleden. De geschiedenis van Nederland in de twintigste eeuw, J.J. WOLTJER, Amsterdam, Balans. 1992, 568 pp., fl. 59,50. ISBN 90–5018–152‐X.

Past and Present—Special ‘Europe’ Edition, No. 137. November 1992, edited by Joanna INNES and Paul SLACK.     

Effect of stereotomy on the lower bound value of minimum thickness of semi-circular masonry arches

Constructing structural systems with the minimal required cross section of its members was a strong motivation for progress whole along the history of building. This article investigates the effect of stereotomy on the minimum thickness value of a semi-circular arch made of masonry: a material with negligible tensile strength. The arch is modeled with its center line to which the loading is assigned according to arch length. Here, instead of some scalar parameters such as the rupture angle and the location of the middle hinge on the intrados, the geometry of the stereotomy is associated with a continuous function. Stereotomy-related constraints are introduced to keep the results feasible from an engineering point of view, and it is also demonstrated that they are essential for a well-posed constrained optimization problem. The necessary condition for a non-vanishing lower bound of minimum thickness values is derived analytically considering the assumptions of limit state analysis, infinite friction, and a no-tension material model. The lower bound thickness to radius ratio (t/R) is found to be t/R = 0.0819. A numerical method is introduced to demonstrate the existence of a valid stereotomy at the lower bound. Multiple admissible stereotomy patterns are presented at various minimum thickness values (higher than the lower bound) to demonstrate that suitable stereotomy for a fixed (t/R) ratio is far not unique—in general even the location of the middle hinge and the rupture angle might vary.