Significance of new species of Cryptorhynchia (Brachiopoda) from the Middle Jurassic of Kutch,India

Cryptorhynchia is a brachiopod genus, until recently known only from the late Bathonian. Two new species C. karuna and C. jhooraensis are here described from the middle Bathonian at Kutch, western India and record the earliest known occurrences of the genus. They constitute ancestor-descendant lineages with the two existing younger species C. pulcherrima and C. rugosa respectively. Evolution in both cases shows ‘parallel’ trends and the descendants are scaled-down versions of their respective progenitors. Statistical analyses reveal that this evolutionary miniaturization involves allometry-induced heterochrony, especially progenesis, and is marked by a rapid speciation event compatible with the punctuational model. Evolution appears to be anagenetic and may be attributed to the unstable nature of environment where onshore innovation produced smaller descendants that adopted r-strategy. Facies distribution and functional morphology suggest that species of Cryptorhynchia were well adapted to shallow, unstable carbonate shelf. However, they disappeared suddenly at the Bathonian - Callovian boundary which was marked by a global transgression. The possible causal factors of their extinction may be the consequent changes in bathymetry and substrate condition.     

Overpressure in the Malay Basin and prediction methods

Predrill overpressure prediction is important for well planning and migration modeling for prospect evaluation. The Eaton (Journal of Petroleum Technology, 24 , 1972, 929) and Bowers (SPE Drilling & Completion, 10 , 1995, 89) methods are used worldwide for postdrill overpressure prediction using sonic log and predrill overpressure prediction using seismic interval velocity. In this research, these two methods were used for overpressure prediction using 3D anisotropic prestack depth‐migrated seismic interval velocity in a field of the Malay Basin. In the shallow overpressured zone, where the mechanism of overpressure is undercompaction, the onset of overpressure was predicted reasonably well using the Eaton and Bowers methods with their standard parameters (i.e., Eaton exponent 3 and Bowers loading curve) for seismic velocity. However, in the deep overpressured zone, where fluid expansion is the cause of overpressure generation, these methods underpredicted the high overpressure. In the deep overpressured zone, the overpressures were better predicted by applying a correction to the Eaton method. On the other hand, the Bowers unloading parameters for the fluid expansion mechanisms did not show any significant effect on overpressure prediction. Hence, in the study area, the Bowers method is not effective for 3D overpressure prediction using seismic velocity, whereas the Eaton method is more robust and can be used for 3D overpressure prediction from seismic velocity.     

Transnationalism and identity: a tale of two faces and multiple lives

Transnational ties add new complexities to the continuous and dynamic processes of identity formation. Based on self‐reflexive narratives, this paper examines the authors' identity transformations associated with their respective transnational experiences. We are two Asian women from India and China, respectively, who are international students pursuing doctoral degrees in Canada. Although we share similar demographic and economic backgrounds, we perform distinct transnational acts. Focusing specifically on social and cultural linkages, we have identified reasons that have influenced our cross‐border involvements. Based on our findings, we present an emergent conceptual framework that highlights interactive psychological, sociocultural and economic processes that influence the formation of individual transnational identities. We also share with our readers some methodological lessons learnt along our path of self‐expression, analysis and representation .     

Hugh Trevor-Roper and the history of ideas

A wave of recent publication connected to Hugh Trevor-Roper offers cause to take stock of his life and legacy. He is an awkward subject because his output was so protean, but a compelling one because of his significance for the resurgence of the history of ideas in Britain after 1945. The article argues that the formative period in Trevor-Roper's life was 1945–57, a period curiously neglected hitherto. It was at this time that he pioneered a history of ideas conceived above all as the study of European liberal and humanist tradition. Analysis of the relative importance of contemporary and early modern history in his oeuvre finds that, while the experience of Hitler and the Cold War was formative, it was not decisive.Trevor-Roper was at heart an early modernist who did not abjure specialization.However, he insisted that specialized study must be accompanied by “philosophical” reflection on the workings of a constant human nature present throughout history, a type of reflection best pursued by reading classical historians such as Gibbon and Burckhardt.Yet this imperative in turn fostered purely historical research into the history of historical writing – another branch of the history of ideas.     

Unconditional Reliability-Based Design of Tuned Liquid Column Dampers Under Stochastic Earthquake Load Considering System Parameters Uncertainties

The reliability-based design of tuned mass damper considering system parameters uncertainties is noteworthy. However, the same is not the case for liquid dampers. The present study deals with the reliability-based design of tuned liquid column dampers under random earthquake considering system parameters uncertainties. Using the conditional second-order information of response quantities, the total probability concept is applied to evaluate the unconditional failure probability which is subsequently used as the objective function to obtain the damping parameters. A numerical study elucidates the effect of system parameters uncertainties on the damper parameters optimization and safety of the structure.     

From the ‘spirit of capital’ to the “spirit” of capitalism: The transition in German economic thought between Lujo Brentano and Max Weber

I dedicate this essay to the memory of the late Wolfgang Mommsen—the subject would have been congenial to him. It is one of a series of offshoots from a central project: a scholarly edition of Max Weber's Protestant Ethic with commentary. When I first told Prof. Mommsen of my plan in 1994 he looked me full in the face and gave a characteristic growl: “All that work!” Here was a man who knew what he was about. My thanks to Ross McKibbin and Keith Tribe for reading this paper in draft.

The article begins by examining Max Weber's relations with Lujo Brentano, much the most important “precursor” to Weber in the field of economics. In particular, Brentano conducted a form of parallel inquiry into the rise of ‘the spirit of capital’ in England 35 years before Weber looked for the origins of “spirit” of capitalism there, and the contrast between these two ideas casts much light both on Brentano and on Weber's Protestant Ethic. This personal history leads into a broader history of the transition in German economic thought between the 1860s – the formative decade for Brentano but also the era of Marx's Capital – and that of Weber's generation coming to maturity c.1890. Marx and Weber remain the two great canonical thinkers and original minds; but any authentic historical comparison between Marx and Weber must take in Brentano. The essence of the contrast between the generations is that between Weber's novel conception of an ethical ‘capitalism’, and the materialism and naturalism underpinning Brentano's and Marx's ‘capital’, although Weber and Brentano are alike as liberals, democrats and bourgeois.     

Leaf galls on Dicroidium hughesii (Feistmantel) Lele from the Triassic of India—a new record

Disc-like galls are reported on the Triassic corystosperm leaf Dicroidium hughesii (Feistmantel) Lele from the Parsora Formation of South Rewa Gondwana Basin, central India. Although there have been numerous reports of arthropod–plant interactions from Permian and Lower Cretaceous successions, this is the first unequivocal report of arthropod–plant interactions from the Triassic succession of Peninsular India. The new record adds to global evidence that arthropod herbivory and gall formation, in particular, had rediversified by the Late Triassic in the wake of the end-Permian mass extinction.