The Correspondence and Unpublished Papers of Robert Persons, SJ, ed. Victor Houliston, Ginevra Crosignani, and Thomas M. McCoog, SJ (Toronto: Pontifical Institute of Mediaeval Studies, 2017).

2020 ◽  
pp. 221-224
Author(s):  
Jan Machielsen

This chapter examines the volume on the letters and papers of the English Jesuit Robert Persons (1546–1610) — the most prominent of the leaders of the early English Mission — edited by Victor Houliston, Ginevra Crosignani, and Thomas M. McCoog, SJ. This volume covers the period in Persons's life from shortly after his expulsion from Balliol College in 1574 to the run up of the Spanish Armada in 1588. The letters in between give a first-hand account of a wide range of crucial events. They cover the conflicts between the Welsh and the English at the Venerable English College in Rome. They also give more than a glimpse into the fateful mission of Persons and Edmund Campion to England in 1580–1581. Letters usefully place this endeavour within the context of global Jesuit missions. The documents show the elitism of the Jesuits, preoccupied above all with the conversion of the gentry. The chapter then considers a number of considerable challenges faced by the editors in putting this correspondence together.

2020 ◽  
Vol 48 (3-4) ◽  
pp. 13-26
Author(s):  
Brandon W. Hawk

Literature written in England between about 500 and 1100 CE attests to a wide range of traditions, although it is clear that Christian sources were the most influential. Biblical apocrypha feature prominently across this corpus of literature, as early English authors clearly relied on a range of extra-biblical texts and traditions related to works under the umbrella of what have been called “Old Testament Pseudepigrapha” and “New Testament/Christian Apocrypha." While scholars of pseudepigrapha and apocrypha have long trained their eyes upon literature from the first few centuries of early Judaism and early Christianity, the medieval period has much to offer. This article presents a survey of significant developments and key threads in the history of scholarship on apocrypha in early medieval England. My purpose is not to offer a comprehensive bibliography, but to highlight major studies that have focused on the transmission of specific apocrypha, contributed to knowledge about medieval uses of apocrypha, and shaped the field from the nineteenth century up to the present. Bringing together major publications on the subject presents a striking picture of the state of the field as well as future directions.


Author(s):  
Anna-Maria Hartmann

Mythographies were books that collected, explained, and interpreted myth-related material. Extremely popular during the Renaissance, these works appealed to a wide range of readers. While the European mythographies of the sixteenth century have been utilized by scholars, the short, early English mythographies, written from 1577 to 1647, have puzzled critics. The first generation of English mythographers did not, as has been suggested, try to compete with their Italian predecessors. Instead, they made mythographies into rhetorical instruments designed to intervene in topical debates outside the world of classical learning. Because English mythographers brought mythology to bear on a variety of contemporary issues, they unfold a lively and historically well-defined picture of the roles myth was made to play in early modern England. Exploring these mythographies can contribute to previous insights into myth in the Renaissance offered by studies of iconography, literary history, allegory, and myth theory.


2019 ◽  
Vol 867 ◽  
pp. 146-194 ◽  
Author(s):  
G. L. Richard ◽  
A. Duran ◽  
B. Fabrèges

We derive a two-dimensional depth-averaged model for coastal waves with both dispersive and dissipative effects. A tensor quantity called enstrophy models the subdepth large-scale turbulence, including its anisotropic character, and is a source of vorticity of the average flow. The small-scale turbulence is modelled through a turbulent-viscosity hypothesis. This fully nonlinear model has equivalent dispersive properties to the Green–Naghdi equations and is treated, both for the optimization of these properties and for the numerical resolution, with the same techniques which are used for the Green–Naghdi system. The model equations are solved with a discontinuous Galerkin discretization based on a decoupling between the hyperbolic and non-hydrostatic parts of the system. The predictions of the model are compared to experimental data in a wide range of physical conditions. Simulations were run in one-dimensional and two-dimensional cases, including run-up and run-down on beaches, non-trivial topographies, wave trains over a bar or propagation around an island or a reef. A very good agreement is reached in every cases, validating the predictive empirical laws for the parameters of the model. These comparisons confirm the efficiency of the present strategy, highlighting the enstrophy as a robust and reliable tool to describe wave breaking even in a two-dimensional context. Compared with existing depth-averaged models, this approach is numerically robust and adds more physical effects without significant increase in numerical complexity.


2011 ◽  
Vol 1 (32) ◽  
pp. 22
Author(s):  
Hocine Oumeraci ◽  
Tijl Staal ◽  
Saskia Pfoertner ◽  
Matthias Kudella ◽  
Stefan Schimmels ◽  
...  

Elastomeric bonded permeable revetments, also called PBA (Polyurethane bonded aggregate) revetments, are highly porous structures made of mineral aggregates (e.g. crushed stones) which are durably and elastically bonded by polyurethane (PU). Despite their numerous advantages as compared to conventional revetments and the large experience available from more than 25 pilot projects, physically-based design formulae to predict their hydraulic performance, wave loading and response are still lacking. Therefore, the present study aims at improving the understanding of the processes involved in the interaction between wave, revetment and foundation, based on large-scale model tests performed in the Coastal Research Centre (FZK), Hannover/Germany, and to provide prediction formulae/diagrams. This paper is focused on the prediction of the hydraulic performance (wave reflection, wave run-up and run-down) and the response of the sand core (pore pressure and effective stress) beneath the revetment for a wide range of wave conditions, including the analysis of an observed failure due to transient soil liquefaction.


2018 ◽  
Author(s):  
Iryanto ◽  
Sri Redjeki Pudjaprasetya

Simplified models like the shallow water equations (SWE) are commonly adopted for describing a wide range of free surface flow problems, like flows in rivers,lakes, estuaries, or coastal areas. In the literature, numerical methods for the SWE are mostly mesh-based. However, this macroscopic approach is unable to accurately represent the complexity of flows near coastlines, where waves nearly break. This fact prompted the idea of coupling the mesh-based SWE model with a meshless particlemethod for solving the Euler equations. In a previous paper, a method to couple the staggered scheme SWE and the smoothed particle hydrodynamics (SPH) Euler equations was developed and discussed. In this article, this coupled model is used for simulating solitary wave run-up on a sloping beach. The results show strong agreement with the experimental data of Synolakis. Simulations of wave overtopping over aseawall were also performed.


Author(s):  
Judith Huber

Chapter 1 introduces the major research questions pursued in the book: (a) To investigate motion expression in Old and Middle English, with a focus both on what is possible and what is frequent. It will be shown that, like Present-Day English, early English is strongly satellite-framing and can use a wide range of manner verbs and non-motion verbs to express motion. (b) To study the semantic and syntactic integration in Middle English of a range of pure path verbs (e.g. entrer, issir) borrowed from French, which are semantically unusual in the native system of talking about motion. The structure of the book is outlined with an overview of the remaining chapters.


Author(s):  
V.A. Brusov ◽  
Yu.Yu. Merzlikin ◽  
A.S. Menshikov

During their calendar life, passenger and transport aircraft run more than 200 thousand kilometers on the runways, which cause a significant part of the damage, both in the landing gears and in other units of the airframe. To reduce aircraft overloads at the stages of takeoff and landing (run-up and run on the runway) and taxiing, shock-absorbing struts with variable elastic-damping characteristics are used. Due to the fact that the parameters of the runway irregularities are in a wide range of values, it is necessary to use an adaptive system for controlling the stiffness coefficients and damping of the shock absorber strut, designed using an artificial neural network. The paper considered a network containing three layers. Using such a model, it is possible to implement an adaptive control circuit adjusting the elastic-damping parameters of the aircraft shock absorber struts to specific runway conditions (length and height of the irregularity, specific hardness of the runway). The velocity gradient method was used to train the artificial neural network. Half the square of the mismatch signal was used as the target criterion to be minimized. The calculated studies of the run up and run of the Il-114 aircraft on a dirt runway showed the possibility of reducing vertical overloads by up to 15% when equipped with a system controlling elastic-damping characteristics with a neural network. The comparison was carried out with an aircraft equipped with a “classical” (non-adaptive) system for controlling landing gear parameters.


Water ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 1035 ◽  
Author(s):  
Nils B. Kerpen ◽  
Talia Schoonees ◽  
Torsten Schlurmann

Wave overtopping—i.e., excess of water over the crest of a coastal protection infrastructure due to wave run-up—of a smooth slope can be reduced by introducing slope roughness. A stepped revetment ideally constitutes a slope with uniform roughness and can reduce overtopping volumes of breaking waves up to 60% compared to a smooth slope. The effectiveness of the overtopping reduction decreases with increasing Iribarren number. However, to date a unique approach applicable for a wide range of boundary conditions is still missing. The present paper: (i) critically reviews and analyzes previous findings; (ii) contributes new results from extensive model tests addressing present knowledge gaps; and (iii) proposes a novel empirical formulation for robust prediction of wave overtopping of stepped revetments for breaking and non-breaking waves. The developed approach contrasts a critical assessment based on parameter ranges disclosed beforehand between a smooth slope on the one hand and a plain vertical wall on the other. The derived roughness reduction coefficient is developed and adjusted for a direct incorporation into the present design guidelines. Underlying uncertainties due to scatter of the results are addressed and quantified. Scale effects are highlighted.


2017 ◽  
Vol 7 (4) ◽  
pp. 728-740 ◽  
Author(s):  
Iryanto ◽  
S.R. Pudjaprasetya

AbstractSimplified models like the shallow water equations (SWE) are commonly adopted for describing a wide range of free surface flow problems, like flows in rivers, lakes, estuaries, or coastal areas. In the literature, numerical methods for the SWE are mostly mesh-based. However, this macroscopic approach is unable to accurately represent the complexity of flows near coastlines, where waves nearly break. This fact prompted the idea of coupling the mesh-based SWE model with a meshless particle method for solving the Euler equations. In a previous paper, a method to couple the staggered scheme SWE and the smoothed particle hydrodynamics (SPH) Euler equations was developed and discussed. In this article, this coupled model is used for simulating solitary wave run-up on a sloping beach. The results show strong agreement with the experimental data of Synolakis. Simulations of wave overtopping over a seawall were also performed.


2003 ◽  
Vol 2 (1) ◽  
pp. 172-183 ◽  
Author(s):  
Yuri Okina

The crisis facing Japan's banking sector has been attributed to a wide range of factors: (1) the run-up and collapse of the bubble; (2) a lack of adequate supervision of financial institutions by the government; (3) the stagnation of the economy, because the Japanese growth model is no longer relevant; and (4) bad management of the banks. It is important to reform corporate governance in the real sector, not merely in the financial sector. It should also be recognized that Japan's financial system should reduce the size of the safety net provided by the government not only through the deposit insurance system, but also through the enormous postal savings business.


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