499 research outputs found
Bibliographie de l'Humanisme dans les anciens Pays-Bas. Avec un répertoire bibliographique des humanistes et poètes néolatins. Supplément 1970-1985 avec compléments à l'édition de A. Gerlo et H. D. L. Vervliet (Bruxelles 1972) sous la rédaction de Marcus De Schepper avec la collaboration de Chris L. Heesakkers
No full textCrahay Roland. Bibliographie de l'Humanisme dans les anciens Pays-Bas. Avec un répertoire bibliographique des humanistes et poètes néolatins. Supplément 1970-1985 avec compléments à l'édition de A. Gerlo et H. D. L. Vervliet (Bruxelles 1972) sous la rédaction de Marcus De Schepper avec la collaboration de Chris L. Heesakkers. In: Revue belge de philologie et d'histoire, tome 70, fasc. 4, 1992. Histoire médiévale, moderne et contemporaine — Middeleeuwse, moderne en hedendaagse geschiedenis. pp. 1031-1032
A matrix Hilbert transform in Hermitean Clifford analysis
No full textAbstractOrthogonal Clifford analysis is a higher dimensional function theory offering both a generalization of complex analysis in the plane and a refinement of classical harmonic analysis. During the last years, Hermitean Clifford analysis has emerged as a new and successful branch of it, offering yet a refinement of the orthogonal case. Recently in [F. Brackx, B. De Knock, H. De Schepper, D. Peña Peña, F. Sommen, submitted for publication], a Hermitean Cauchy integral was constructed in the framework of circulant (2×2) matrix functions. In the present paper, a new Hermitean Hilbert transform is introduced, arising naturally as part of the non-tangential boundary limits of that Hermitean Cauchy integral. The resulting matrix operator is shown to satisfy properly adapted analogues of the characteristic properties of the Hilbert transform in classical analysis and orthogonal Clifford analysis
Solution of the Fokker-Planck equation with boundary conditions by Feynman-Kac integration.
No full textIn this paper, we apply the results about d and d-function perturbations in order to formulate within the Feynman-Kac integration the solution of the forward Fokker-Planck equation subject to Dirichlet or Neumann boundary conditions. We introduce the concept of convex order to derive upper and lower bounds for path integrals with d and d- functions in the integrand. We suggest the use of bounds as an approximation for the solution.Feynman-Kac integration; Functions; Integration; Path integral; Perturbations theory; SDE;
Stochastic approximations of present value functions.
No full textThe aim of the paper is to apply the method proposed by Denuit, Genest and Marceau (1999) for deriving stochastic upper and lower bounds on the present value of a sequence of cash flows, where the discounting is performed under a given stochastic return process. The convex approximation provided by Goovaerts, Dhaene and De Schepper (1999) and Goovaerts and Dhaene (1999) is then compared to these stochastic bounds. On the basis of several numerical examples, it will be seen that the convex approximation seems reasonable.Value; Functions;
Benchmarking Sensitivity of Continual Graph Learning for Skeleton-Based Action Recognition
No full textContinual learning (CL) is the research field that aims to build machine
learning models that can accumulate knowledge continuously over different tasks
without retraining from scratch. Previous studies have shown that pre-training
graph neural networks (GNN) may lead to negative transfer (Hu et al., 2020)
after fine-tuning, a setting which is closely related to CL. Thus, we focus on
studying GNN in the continual graph learning (CGL) setting. We propose the
first continual graph learning benchmark for spatio-temporal graphs and use it
to benchmark well-known CGL methods in this novel setting. The benchmark is
based on the N-UCLA and NTU-RGB+D datasets for skeleton-based action
recognition. Beyond benchmarking for standard performance metrics, we study the
class and task-order sensitivity of CGL methods, i.e., the impact of learning
order on each class/task's performance, and the architectural sensitivity of
CGL methods with backbone GNN at various widths and depths. We reveal that
task-order robust methods can still be class-order sensitive and observe
results that contradict previous empirical observations on architectural
sensitivity in CL.Comment: This work is accepted at VISAPP 2024 as a short pape
A straightforward analytical calculation of the distribution of an annuity certain with stochastic interest rate.
No full textStarting from the moment generating function of the annuity certain with stochastic interest rate written by means of a time discretization of the Wiener process as an n-fold integral, a straightforward evaluation of the corresponding distribution function is obtained letting n tend to infinity. The advantage of the present method consists in the direct calculation technique of the n-fold integral, instead of using moment calculation or differential equations, and in the possible applicability of the present method to varying annuities which could be applied to IBNR results, as well as to pension fund calculations, etc.Distribution; Annuities; Processes; Evaluation;
A Bayesian copula model for stochastic claims reserving
No full textWe present a full Bayesian model for assessing the reserve requirement of multiline Non-Life insurance companies. Bayesian models for claims reserving allow to account for expert knowledge in the evaluation of Outstanding Loss Liabilities, allowing the use of additional information at a low cost. This paper combines a standard Bayesian approach for the estimation of marginal distribution for the single Lines of Business for a Non-Life insurance company and a Bayesian copula procedure for the estimation of aggregate reserves. The model we present allows to "mix" own-assessments of dependence between LoBs at a company level and market-wide estimates provided by regulators. We illustrate results for the single lines of business and we compare standard copula aggregation for different copula choices and the Bayesian copula approach
Valerii Andreae [...] De toga et sago sive Litterata armataq[ue] militia dissertatio. Eiusdem Panegyris, dicta D. Ivoni, iuris-consultorum & togatorum tutelari.
No full textDrukkersmerkPanegyris divo Ivoni, ivris-consvltorvm tvtelari (f. D3 recto - F4 verso)Petri Gvdelini [...] Lavdatio D. Ivonis (f. F5 recto - G4 recto)Coppens & de Schepper. Henrick van Hastens 46Europeana-GoogleBook
'Foreign' books for English readers : published translations of navigation manuals and their audience in the English Renaissance, 1500-1640
No full textAlthough there has been an increasing interest in the study of Renaissance translations
and the early world of print, the history of navigation and exploration has not been the
subject of any such in-depth bibliographical research. This thesis identifies and
analyses a corpus of translated navigation manuals and related works that were printed
in England between 1500 and 1640.
The context is sketched by defining the different areas of maritime writing found in
Renaissance England. Although English contributions were particularly strong in such
topics as the mathematical side of navigation, the technical instruments and the debates
about magnetism and compass variation, publications of manuals and sailing directions
were scarce. This thesis reveals that such knowledge was imported from continental
Europe through translation. Forty-three translations out of seven different source
languages are discussed from a book-historical perspective to establish what their
source text was, how they came to England and who was responsible for translating
and publishing them.
Such information was obtained, in part, from a study of the paratexts, in particular the
translators’ and publishers’ dedications and addresses to the reader, which show the
reason and purpose of the translations, the methods employed and particular problems
encountered, as well certain linguistic and rhetorical characteristics. One work is
selected as a case-study for in-depth research, namely Martin Cortés’s Breue
compendio de la sphera y de la arte de nauegar (1551) and its translation by Richard
Eden, The Arte of Navigation (1561), which went through ten editions and became the
model for English navigation manuals.
Finally, by turning to the agents involved in the production and dissemination of these
translations, particularly the printers and booksellers, and establishing the connections
between them, this thesis reveals intricate social networks and sheds new light on
certain aspects of the fields of navigation, translation and print
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