scholarly journals Functional tolerancing: Virtual material condition on complex junctions

2012 ◽  
Vol 63 (3) ◽  
pp. 210-221 ◽  
Author(s):  
Robin Chavanne ◽  
Bernard Anselmetti
Author(s):  
Jessica Leech

In the Postulates of Empirical Thinking, a section of the Critique of Pure Reason, Kant presents an account of the content and role of our concept of real possibility in terms of formal conditions of experience. However, much later in the Critique he introduces the idea of a material condition of possibility. What is this material condition of possibility, and how does it fit with the conception of possibility in terms of formal conditions? This essay argues that the key to answering these questions—as well as to understanding Kant’s criticism of rational theology, in which the discussion of the material condition of possibility appears—is Kant’s account of how we can individuate objects.


Author(s):  
Michelle Kosch

Chapter 4 explains Fichte’s conception of formal independence or conscientiousness, which has two aspects (a ‘formal’ and a ‘material’ aspect, the latter not to be confused with material independence). Fichte’s account is compared with Kant’s, and the two are shown to be in more agreement than has previously been thought. The independence of the material condition on moral worth from this formal one is shown to be entailed by Fichte’s account of the role of conscience (rather than, as is often thought, being inconsistent with it). Finally, Fichte’s account of moral evil is explained and its consistency with his account of conscience examined.


Author(s):  
Asha Rogers

Debates about the value of the ‘literary’ rarely register the expressive acts of state subsidy, sponsorship, and cultural policy that have shaped post-war Britain. In State Sponsored Literature, Asha Rogers argues that the modern state was a major material condition of literature, even as its efforts were relative, partial, and prone to disruption. Drawing from neglected and occasionally unexpected archives, she shows how the state became an integral and conflicted custodian of literary freedom in the postcolonial world as beliefs about literature’s ‘public’ were radically challenged by the unrivalled migration to Britain at the end of Empire. State Sponsored Literature retells the story of literature’s place in modern Britain through original analysis of the institutional forces behind canon-formation and contestation, from the literature programmes of the British Council and Arts Council to the UK’s fraught relations with UNESCO, from GCSE literature anthologies to the origins of The Satanic Verses in migrant Camden. The state did not shape literary production in a vacuum, Rogers argues, rather its policies, practices, and priorities were inexorably shaped in turn. Demonstrating how archival work can potentially transform our understanding of literature and its reading publics, this book challenges how we think about literature’s value by asking what state involvement has meant for writers, readers, institutions, and the ideal of autonomy itself.


Author(s):  
ULRICH MARZOLPH ◽  
MATHILDE RENAULD

Abstract The collections of the Royal Asiatic Society hold an illustrated pilgrimage scroll apparently dating from the first half of the nineteenth century. The scroll's hand painted images relate to the journey that a pious Shiʿi Muslim would have undertaken after the performance of the pilgrimage to Mecca. Its visual narrative continues, first to Medina and then to the Shiʿi sanctuaries in present-day Iraq, concluding in the Iranian city of Mashhad at the sanctuary of the eighth imam of the Twelver-Shiʿi creed, imam Riḍā (d. 818). The scroll was likely prepared in the early nineteenth century and acquired by the Royal Asiatic Society from its unknown previous owner sometime after 1857. In terms of chronology the pilgrimage scroll fits neatly into the period between the Niebuhr scroll, bought in Karbala in 1765, and a lithographed item most likely dating from the latter half of the nineteenth century, both of which depict a corresponding journey. The present essay's initial survey of the scroll's visual dimension, by Ulrich Marzolph, adds hitherto unknown details to the history of similar objects. The concluding report, by Mathilde Renauld, sheds light on the scroll's material condition and the difficulties encountered during the object's conservation and their solution.


2021 ◽  
Vol 52 (2) ◽  
pp. 177-192
Author(s):  
J. Musekamp ◽  
H. Hoche ◽  
T. Schmitt ◽  
P.‐M. Reinders ◽  
M. Oechsner ◽  
...  

2007 ◽  
Vol 7 (4) ◽  
pp. 347-359 ◽  
Author(s):  
Gaurav Ameta ◽  
Joseph K. Davidson ◽  
Jami J. Shah

A new mathematical model for representing the geometric variations of lines is extended to include probabilistic representations of one-dimensional (1D) clearance, which arise from positional variations of the axis of a hole, the size of the hole, and a pin-hole assembly. The model is compatible with the ASME/ ANSI/ISO Standards for geometric tolerances. Central to the new model is a Tolerance-Map (T-Map) (Patent No. 69638242), a hypothetical volume of points that models the 3D variations in location and orientation for a segment of a line (the axis), which can arise from tolerances on size, position, orientation, and form. Here, it is extended to model the increases in yield that occur when maximum material condition (MMC) is specified and when tolerances are assigned statistically rather than on a worst-case basis; the statistical method includes the specification of both size and position tolerances on a feature. The frequency distribution of 1D clearance is decomposed into manufacturing bias, i.e., toward certain regions of a Tolerance-Map, and into a geometric bias that can be computed from the geometry of multidimensional T-Maps. Although the probabilistic representation in this paper is built from geometric bias, and it is presumed that manufacturing bias is uniform, the method is robust enough to include manufacturing bias in the future. Geometric bias alone shows a greater likelihood of small clearances than large clearances between an assembled pin and hole. A comparison is made between the effects of choosing the optional material condition MMC and not choosing it with the tolerances that determine the allowable variations in position.


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