Approximately three decades ago the question was first answered whether parasitoids are able to assess the number or origin of eggs in a host for a solitary parasitoid, Leptopilina heterotoma, by fitting theoretically derived distributions to empirical ones. We extend the set of different theoretically postulated distributions of eggs among hosts by combining searching modes and abilities in assessing host quality. In the models, parasitoids search either randomly (Poisson) (1) or by vibrotaxis (Negative Binomial) (2). Parasitoids are: (a) assumed to (...) treat all hosts equally, (b) able to distinguish them in unparasitised and parasitised hosts only, (c) able to distinguish them by the number of eggs they contained, or (d) able to recognise their own eggs. Mathematically tractable combinations of searching mode (1 and 2) and abilities (a,b,c,d) result in seven different models (M1a, M1b, M1c, M1d, M2a, M2b and M2c). These models have been simulated for a varying number of searching parasitoids and various mean numbers of eggs per host. Each resulting distribution is fitted to all theoretical models. The model with the minimum Akaike's information criterion (AIC) is chosen as the best fitting for each simulated distribution. We thus investigate the power of the AIC and for each distribution with a specified mean number of eggs per host we derive a frequency distribution for classification.Firstly, we discuss the simulations of models including random search (M1a, M1b, M1c and M1d). For M1a, M1c and M1d the simulated distributions are correctly classified in at least 70% of all cases. However, in a few cases model M1b is only properly classified for intermediate mean values of eggs per host. The models including vibrotaxis as searching behaviour (M2a, M2b and M2c) cannot be distinguished from those with random search if the mean number of eggs per host is low. Among the models incorporating vibrotaxis the three abilities are detected analogously as in models with random search. (shrink)

A review is given on statistical and modelling issues in ecotoxicology. The issues discussed are:1. How to estimate an (almost) no effect concentration chemicals in the laboratory.

There is a claim that clinical ethics support services (CESS) improve healthcare quality within healthcare organisations. However, there is lack of strong evidence supporting this claim. Rather, the current focus is on the quality of CESS themselves or on individual learning outcomes. In response, this article proposes a theoretical framework leading to empirical hypotheses that describe the relationship between a specific type of CESS, moral case deliberation and the quality of care at the organisational level. We combine insights from the (...) literature on CESS, organisational learning and quality improvement and argue that moral case deliberation causes healthcare professionals to acquire practical wisdom. At the organisational level, where improving quality is a continuous and collective endeavour, this practical wisdom can be aggregated into morisprudence, which is an ongoing formulation of moral judgements across cases encountered within the organisation. Focusing on the development of morisprudence enables refined scrutinisation of CESS-related quality claims. (shrink)

Hoewel in de laatste jaren sterk de nadruk is gelegd op de “autonomie” van het geschrevene ten opzichte van de schrijver en diens belevingswereld, wil deze auteur graag beginnen met een persoonlijke betuiging van erkentelijkheid. Een mens is toch wel zodanig verbonden met een geesteskind dat hij lang bij zich gedragen heeft, dat hij de aandacht en de grondigheid die uit de hiervoor geplaatste reacties spreekt, alleen maar in hoge mate kan waarderen. Hij heeft ze ervaren als toonbeelden van “ontmoeting”. (...) De verschillen tussen de drie reacties laten nog eens zien dat ontmoeting verre van monotoon is. Juist ook die verschillen vond ik leerzaam. Bij de opzet van mijn repliek wil ik aan de diversiteit zo goed mogelijk recht doen door de reacties stuk voor stuk te bespreken. Af en toe zal een “intertekstuele” opmerking wenselijk of onvermijdelijk zijn. Overigens vrees ik dat binnen het bestek van deze repliek niet voldoende ingegaan kan worden op alle vragen en tegenwerpingen. (shrink)

ABSTRACT Match-fixing is a major ethical issue in sports. Although research interest in match-fixing has increased in recent years, we remain largely in the dark regarding how both betting- and non-betting-related match-fixing relate to the moral decision-making of those involved. Drawing on Rest’s theory of morality and on the perceptions of a large sample of participants in Flemish sports, this study indicates that most match-fixing incidents are non-betting-related, while moral motivation and associated challenges clearly differ according to the type of (...) match-fixing. Therefore, each type of match-fixing requires different preventive measures. (shrink)

Bijdragen over de actuele betekenis van de filosofie, met name de Reformatorische Wijsbegeerte.

Dit artikel is, samen met een nog volgend tweede, bedoeld als aanzet tot een bredere studie. Die studie zal, naar ik hoop, binnen twee jaar voltooid zijn. Ze maakt in zekere mate deel uit van een onderzoeksprogramma dat in uitvoering is aan de Faculteit der Wijsbegeerte van de Vrije Universiteit. Het is nu niet van belang de eigen plaats ervan binnen dat programma nauwkeuriger te omschrijven. Wel kan worden gezegd dat de studie een sterk historische inslag heeft, maar uitmondt in (...) een meer persoonlijke, systematische beschouwing. Dat artikelen met dit thema een plaats krijgen in Philosophia Reformata, behoeft waarschijnlijk weinig betoog. Een tijdschrift dat ontstaan is uit een herbezinning op reikwijdte en functie van “rede”, een herbezinning die ertoe leidde “liefde” als dieptemotief in de werkelijkheid te honoreren, —zo’n tijdschrift lijkt geen ongeschikte plek. (shrink)

Diverse omstandigheden hebben het schrijven en verschijnen van het in jaargang 62, nr. 2 aangekondigde slotartikel vertraagd. Ook toen al uitte ik het voornemen de vier denkers die in het tweede artikel besproken waren nog even te groeperen. Zo’n korte groepering lijkt nu, na meer dan twee jaar, des te meer wenselijk. De vier besproken filosofen waren allen, zij het op uiteenlopende wijze, op zoek naar een nieuwe bepaling van de verhoudingen, — niet alleen tussen “Leidenschaft” en “Vernunft”, maar ook (...) tussen “Leidenschaft” als in-zet — meer actief — en als “passio”, in de zin van “lijden”. (shrink)

The differential field of transseries extends the field of real Laurent series and occurs in various contexts: asymptotic expansions, analytic vector fields, and o-minimal structures, to name a few. We give an overview of the algebraic and model-theoretic aspects of this differential field and report on our efforts to understand its elementary theory.

The Russian invasion of Ukraine on February 24, 2022, has already caused large amounts of greenhouse gas (GHG) emissions and will continue to do so for manyyears after hostilities have ceased mainly because of the emissions linked to the rebuilding of destroyed or damaged housing, public buildings, infrastructure, factories, and the like. My aim in this paper is to discuss how in a time of climate emergency such emissions of war should impact the political morality of states initiating, continuing, and (...) ending war (through a just and enduring peace) as understood by just war theory (JWT). My point of departure is a study by Lennard de Klerk and six co-authors detailing the emissions of the first year of the Russo-Ukrainian war. (shrink)

Abstract‘Social inclusion’ is the leading ideal in services and care for people with intellectual disabilities in most countries in the Global North. ‘Social inclusion’ can refer simply to full equal rights, but more often it is taken to mean something like ‘community participation’. This narrow version of social inclusion has become so ingrained that it virtually goes unchallenged. The presumption appears to be that there is a clear moral consensus that this narrow understanding of social inclusion is good. However, that (...) moral consensus is not clear in the case of people with profound intellectual and/or multiple disabilities (PIMD), who are not able to express their needs and preferences verbally. Moreover, social inclusion has proven to be difficult to conceptualize and implement for people with PIMD. Therefore, it becomes imperative to ask about the ethical rationale of the narrow understanding of social inclusion. For what reasons do we think social inclusion is good? And do those reasons also apply for people with PIMD? This article addresses these questions by providing an ethical analysis of the ideal of social inclusion for people with PIMD. It discusses four ethical arguments for social inclusion and probes their relevance for people with PIMD. The article argues that none of these arguments fully convince of the value of the narrow understanding of social inclusion for people with PIMD. It ends with advocating for an ethical space for imagining a good life for people with PIMD otherwise. (shrink)