500 research outputs found
Large Time Step and DC Stable TD-EFIE Discretized with Implicit Runge-Kutta Methods
No full textThe time domain-electric field integral equation (TD-EFIE) and its differentiated version are widely used to simulate the transient scattering of a time dependent electromagnetic field by a perfect electric conductor (PEC). The time discretization of the TD-EFIE can be achieved by a space-time Galerkin approach or, as it is considered in this contribution, by a convolution quadrature using implicit Runge-Kutta methods. The solution is then computed using the marching-on-in-time (MOT) algorithm. The differentiated TD-EFIE has two problems: 1) the system matrix suffers from ill-conditioning when the time step increases (low frequency breakdown) and 2) it suffers from the DC instability, i.e., the formulation allows for the existence of spurious solenoidal currents that grow slowly in the solution. In this article, we show that 1) and 2) can be alleviated by leveraging quasi-Helmholtz projectors to separate the Helmholtz components of the induced current and rescale them independently. The efficacy of the approach is demonstrated by numerical examples including benchmarks and real-life applications.Numerical Analysi
The past, the present, the future : genital treatment practices in disorders of sex development under scrutiny
No full textLiterature and the nugget of knowledge : an interview with Derek Attridge and Peter Lamarque
No full textAbstract: The idea of an interview with Peter Lamarque and Derek Attridge on the cognitive value of literary fiction arose in the wake of an aesthetics course on the relation between literature and truth at the University of Antwerp. In Spring 2015 Peter Lamarque contributed to this course with the lecture \u201cThe Opacity of Narrative and Fine-grained Reading\u201d. In Spring 2017 Derek Attridge elaborated his view on the relation between literature and truth in his lecture \u201cThe Event of Truth : Literature\u2019s Singular Relation to Knowledge\u201d. After each lecture, we had the occasion to discuss with the author the stakes of the debate and we were rapidly convinced by the many points of convergences between their views. We intended to explore these similarities and differences through a face to face interaction and were happy that both philosophers accepted our invitation for an interview. This interview was conducted by Arthur Cools and Leen Verheyen in York on 9 July 2018
Second-trimester vaginal microbiota disruption and adverse birth outcomes among pregnant women attending antenatal care in Bukavu, Democratic Republic of the Congo
No full textVaginal colonization by Group B Streptococcus in different populations of African women : risk factors and relation with the vaginal microbiome and the cervicovaginal immune system
No full textThe Antwerp Jesuit Cornelius Hazart as an author of dialogue pamphlets
No full textThe Antwerp Jesuit Cornelius Hazart as an author of dialogue pamphlets
Cornelius Hazart (1617-1690) was a prolific author. Amongst many another things, he published a monumental four volume Church History (De Kerckelyke Historie vanden Gheheelen Wereldt, 1667-1671) and dozens of pamphlets in which he argued that only roman Catholics could expect salvation and that their church was by far superior to the various competing protestant institutions (Martens, 2012). Many of these pamphlets were presented as imaginary, but seemingly realistic dialogues between various characters.
In recent years, Dutch scholars have paid attention to the genre of dialogue pamphlets (Dingemanse 2008). They have argued that such dialogue pamphlets were a typical feature of the ‘discussion culture’ that characterized the Dutch Republic (Frijhoff and Spies, 1999). In the Habsburg Netherlands power relations were more vertically structured than in the Dutch Republic. But just as in the Republic, literacy levels in these regions remained high and a reading culture was firmly rooted amongst urban populations (Jacobs and Verberckmoes, 2006). Therefore authorities made use of pamphlets to win over public opinion. Due to their realistic settings, dialogue pamphlets were particularly suited to enact power relations and to enhance the confessionalisation process.
In this paper, I shall analyze Hazart’s dialogue pamphlets. As a preacher of the Antwerp St Ignatius church he was a well-known polemicist. In particular, after the Peace of Munster, when relationships with the Dutch Republic were restored, Hazart used this form. Apparently, he and his fellow clergymen feared that Catholics, who had frequent contacts with northerners, would be lured into Protestantism. Not surprisingly, a detailed reading of Hazart’s dialogue pamphlets reveals that he emphasized the catholic stance on controversial points of doctrine. Moreover, and maybe more importantly, he ridiculed his counterparts, the protestant ministers. Thereby he created powerful stereotypes that would be deeply rooted in the collective imagery of the post Tridentine Catholic Netherlands.
Source material
A corpus of dialogue pamphlets by Cornelius Hazart has been compiled by searches into the STCV-database.
Basic references
C. Dingemanse, Rap van tong, scherp van pen: Literaire discussiecultuur in Nederlandse praatjespamfletten (circa 1600-1750). (Hilversum, 2008).
W. Frijhoff and M. Spies, 1650. Bevochten eendracht (The Hague, 1999).
M. Jacobs and J. Verberckmoes, ‘Populair drukwerk’ in P. Janssens ed. België in de 17de eeuw. De Spaanse Nederlanden en het Prinsbisdom Luik. Band II: Cultuur en Leefwereld (Brussels and Gent, 2006) 106-110.
B. Martens, ‘Nederlandse religieuze controversepublicaties en de kunst van het argumenteren in de Zuidelijke Nederlanden (ca. 1591-c. 1688)’, in Trajecta, 19-20 (2012), 241-272.status: Publishe
Performances of the HL (Hyperloop) transport system
No full textThis paper deals with an analysis of performances of the HL (Hyperloop) transport system considered as an advanced transport alternative to the existing APT (Air Passenger Transport) and HSR (High Speed Rail) systems. The considered performances are operational, financial, social and environmental. The operational performance include capacity and quality of service provided to the system’s users-passengers with attributes such as door-to-door travel time consisting of the access and egress time, schedule delay, in-vehicle time, and interchange time. The economic performances embrace the costs and revenues of operating the system. The costs include that for infrastructure, vehicles, traffic management facilities and equipment, and employees. The revenues embrace earnings from pricing users/passengers. The environmental performances include energy consumption and related emissions of GHGs (Green House Gases), and land use. The social performances are considered to be noise and safety. The analytical models of indicators of these performances are developed and applied to the scenario of operating the HL system on the short- to medium-haul travel distances/routes. These are then compared to the corresponding performances of the HSR and APT. This comparison has shown that the HL system may possess some advantages but also disadvantages regarding particular performances.Transport and PlanningOLD Urban and Regional Developmen
Group B Streptococcus and perinatal mortality
No full textpeer reviewedThe World Health Organization estimates that every year, one million neonatal deaths occur because of neonatal infection. Furthermore, an equal number of stillbirths are thought to be caused by infections. Here we discuss the role of Streptococcus agalactiae (group B Streptococcus, GBS) in neonatal disease and stillbirth
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