We invite systematic consideration of the metaphors of cycles and circulation as a long-term theme in the history of the life and environmental sciences and medicine. Ubiquitous in ancient religious and philosophical traditions, especially in representing the seasons and the motions of celestial bodies, circles once symbolized perfection. Over the centuries cyclic images in western medicine, natural philosophy, natural history and eventually biology gained independence from cosmology and theology and came to depend less on strictly circular forms. As potent ‘canonical (...) icons’, cycles also interacted with representations of linear and irreversible change, including arrows, arcs, scales, series and trees, as in theories of the Earth and of evolution. In modern times life cycles and reproductive cycles have often been held to characterize life, in some cases especially female life, while human efforts selectively to foster and disrupt these cycles have harnessed their productivity in medicine and agriculture. But strong cyclic metaphors have continued to link physiology and climatology, medicine and economics, and biology and manufacturing, notably through the relations between land, food and population. From the grand nineteenth-century transformations of matter to systems ecology, the circulation of molecules through organic and inorganic compartments has posed the problem of maintaining identity in the face of flux and highlights the seductive ability of cyclic schemes to imply closure where no original state was in fact restored. More concerted attention to cycles and circulation will enrich analyses of the power of metaphors to naturalize understandings of life and their shaping by practical interests and political imaginations. (shrink)

In many countries patient involvement is high on the healthcare policy agenda, which includes patient representation in collective decision-making. Patient organizations are generally considered to be important representatives of patients. Other actors also claim to represent patients in decision-making, such as politicians, healthcare professionals, and client advisory councils. In this paper we take a broad view of patient representation, examining all the actors claiming to represent patients in the Dutch debate on the decentralization of care. We conclude that variety in (...) forms of representation could help do justice to the variety of patient preferences. In addition we conclude that in order to ensure the democratic quality of patient representation, actors making representative claims have to reflect on how their claims relate to each other and how they can ensure authorization and accountability in the representative relationship with those they claim to represent. (shrink)

The current study investigated how work-related disagreements—coined as conflicts—relate to workplace bullying, from the perspective of the target as well as the perpetrator. We hypothesized a positive indirect association between task conflicts and bullying through relationship conflicts. This process accounted for both for targets and perpetrators of bullying. Targets are distinguished from perpetrators in our assumption that this indirect effect is boosted by distributive conflict behavior, being yielding for targets and forcing for perpetrators. Results in a large representative sample of (...) the Flemish working population confirmed our hypotheses. Additionally, our study also revealed a direct effect from task conflicts to bullying in the analyses regarding the indirect as well as the conditional indirect effects. For perpetrators, both the indirect and direct relationships are moderated by forcing, underlining the importance of distributive conflict behavior particularly for the enactment of bullying behaviors. (shrink)

Blood service organizations employ various ways to ensure transfusion blood safety, including the testing of all donations for transfusion-transmissible infections (TTI) and the exclusion of donors who are at increased risk of a recent infection. As some TTIs are more common among men who have sex with men (MSM), many jurisdictions (temporarily) defer the donation of blood by sexually active MSM. This boils down to a categorical exclusion of a large group solely on the basis of their sexual orientation, which (...) is seen as unduly discriminatory and stigmatizing. Blood service organizations in the U.K. and the Netherlands have recently changed their deferral policies for MSM. The problem of the MSM deferral involves a conflict between fundamental rights: the right of MSM to equal treatment and the right to health of the recipients of blood and blood products. We distinguish and discuss three broad alternative options to the current categorical deferral of MSM donations: (1) completely abandoning donor selection on the basis of sexual behavior, (2) individual risk assessment of the sexual activities of each potential donor, and (3) individual risk assessment of the sexual activities of MSM only. The new U.K. policy falls within the second category, and the new Dutch policy is in the third category. We argue that each approach comes with moral costs but that the most reasonable option is different from the policies of both the U.K. and the Netherlands. (shrink)

Bullying is one of the most impactful deviant actions that affects workers' personal health and work experience. Bullying is a quite distinctive deviant behavior as targets are subjected to transgressions that could last for months or longer. Even though a number of actions can be taken to resolve bullying between all parties, from the viewpoint of the target it is hard to resolve the situation. As a result, hierarchical influence may be necessary to prevent bullying in the first place. A (...) possible solution, therefore, is focusing on how leaders can impact the bullying behavior. This research argued and showed that ethical leadership is negatively associated with being bullied through tackling one of its most important antecedents of bullying: the design of the work environment. That is, ethical leaders could be shown to improve employees' workload (quantitative work environment) and poor working conditions (qualitative work environment), which was related to decreased bullying. (shrink)

The challenge of convincing people to change their eating habits towards more environmentally sustainable food consumption (ESFC) patterns is becoming increasingly pressing. Food preferences, choices and eating habits are notoriously hard to change as they are a central aspect of people’s lifestyles and their socio-cultural environment. Many people already hold positive attitudes towards sustainable food, but the notable gap between favorable attitudes and actual purchase and consumption of more sustainable food products remains to be bridged. The current work aims to (...) 1) present a comprehensive theoretical framework for future research on ESFC, and 2) highlight behavioral solutions for environmental challenges in the food domain from an interdisciplinary perspective. First, starting from the premise that food consumption is deliberately or unintentionally directed at attaining goals, a goal-directed framework for understanding and influencing ESFC is built. To engage in goal-directed behavior, people typically go through a series of sequential steps. The proposed theoretical framework makes explicit the sequential steps or hurdles that need to be taken for consumers to engage in ESFC. Consumers need to positively value the environment, discern a discrepancy between the desired versus the actual state of the environment, opt for action to reduce the experienced discrepancy, intend to engage in behavior that is expected to bring them closer to the desired end state, and act in accordance with their intention. Second, a critical review of the literature on mechanisms that underlie and explain ESFC (or the lack thereof) in high-income countries is presented and integrated into the goal-directed framework. This contribution thus combines a top-down conceptualization with a bottom-up literature review; it identifies and discusses factors that might hold people back from ESFC and interventions that might promote ESFC; and it reveals knowledge gaps as well as insights on how to encourage both short- and long-term ESFC by confronting extant literature with the theoretical framework. Altogether, the analysis yields a set of 33 future research questions in the interdisciplinary food domain that deserve to be addressed with the aim of fostering ESFC in the short and long term. (shrink)

This study investigates bath the relationship between evaluation of personality traits of party-leaders and party identification, and the evaluation of personality traits as a determinant of voting behaviour. One month before the Belgian national elections of November 81 201 voters evaluate personality traits of four welt known leaders of the main Flemish political parties.Factor analysis indicated three main dimensions in the evaluation of personality traits of politicians : reliability, expertness and self-control. The personality profiles of every party-leader were quite similar (...) when comparing the profiles of groups of subjects with different party preferences. However, subjects who identificated with a certain party rated the party-leader of this party more favorable on all personality traits than did subjects who identificated with another party. These discrepancies in favorableness were rather small for expertness and selfcontrol, but big for reliability and attractiveness. Analysing determinants of voting behaviour we differentiated four types of voters. Convinced voters were determined mainly by party preference and political views. Policyoriented and routine-voters taak into account in the first instance their political views and secondly their party preference. Personality traits of party-leaders functioned as the main determinant only for the voting behaviour of our indifferent subjects. Between these personality traits, mainly the evaluation of expertness had predictive power. (shrink)

Our review of the literature shows that only a minority of youngsters shifts to a more extreme political position because of their experience with unemployment. Unemployment deepens the political apathy of the majority of the youngsters. Unemployment isolates youngsters, so they cannot develop any involvement in polities. The"learned-helplessness" experience of unemployment also contributes to their political apathy.In 1985, 536 employed and 220 unemployed were surveyed on their political, socio-economical and religious attitudes, and their voting behaviour. Because the majority of the (...) respondents were militants of the Christian Labour Movement, we expected the unemployed to shift to the left, rather than to become politically apathetic. The results confirm this hypothesis : the unemployed described themselves as "center left", were more radical on socio-economical issues and favored a more leftist vote that the employed. Surprisingly, the unemployed were also more sceptical about religion and more permissive in sexual ethics. (shrink)

In the Netherlands, consent from relatives is obligatory for post mortal donation. This study explored the perspectives of relatives regarding the request for consent for donation in cases without donor registration. A content analysis of narratives of 24 bereaved relatives of unregistered, eligible, brain-dead donors was performed. Relatives of unregistered, brain-dead patients usually refuse consent for donation, even if they harbour pro-donation attitudes themselves, or knew that the deceased favoured organ donation. Half of those who refused consent for donation mentioned (...) afterwards that it could have been an option. The decision not to consent to donation is attributed to contextual factors, such as feeling overwhelmed by the notification of death immediately followed by the request; not being accustomed to speaking about death; inadequate support from other relatives or healthcare professionals, and lengthy procedures. Healthcare professionals could provide better support to relatives prior to donation requests, address their informational needs and adapt their message to individual circumstances. It is anticipated that the number of consenting families could be enlarged by examining the experience of decoupling and offering the possibility of consent for donation after circulatory death if families refuse consent for donation after brain-death. (shrink)

Public announcement logic is an extension of multiagent epistemic logic with dynamic operators to model the informational consequences of announcements to the entire group of agents. We propose an extension of public announcement logic with a dynamic modal operator that expresses what is true after any announcement: after which , does it hold that Kφ? We give various semantic results and show completeness for a Hilbert-style axiomatization of this logic. There is a natural generalization to a logic for arbitrary events.

The legitimacy of the dominant intensive meat production system with respect to the issue of animal welfare is increasingly being questioned by stakeholders across the meat supply chain. The current meat supply is highly undifferentiated, catering only for the extremes of morality concerns (i.e., conventional vs. organic meat products). However, a latent need for compromise products has been identified. That is, consumer differences exist regarding the trade-offs they make between different aspects associated with meat consumption. The heterogeneity in consumer demand (...) could function as a starting point for market segmentation, targeting and positioning regarding animal welfare concepts that are differentiated in terms of animal welfare and price levels. Despite this, stakeholders in the meat supply chain seem to be trapped in the dominant business model focused on low cost prices. This paper aims to identify conflicting interests that stakeholders in the meat supply chain experience in order to increase understanding of why heterogeneous consumer preferences are not met by a more differentiated supply of meat products produced at different levels of animal welfare standards. In addition, characteristics of the supply chain that contribute to the existence of high exit barriers and difficulty to shift to more animal-friendly production systems are identified. Following the analysis of conflicting interests among stakeholders and factors that contribute to difficulty to transform the existing dominant regime, different routes are discussed that may help and motivate stakeholders to overcome these barriers and stimulate the creation of new markets. (shrink)

En las últimas décadas, las organizaciones se dirigen hacia un enfoque más igualitario, conforme a los ideales del ‘New Work Order’, razón por la cual los modelos jerárquicos con un solo líder ‘poderoso’ se hacen cada vez menos aceptable. Por motivo de esta tendencia general, ha surgido un interés creciente por una conceptualización compartida o múltiple del liderazgo, como el ‘co-liderazgo’. Sin embargo, pocas investigaciones se han concentrado en la manera en que se establecen constelaciones del co-liderazgo durante la interacción (...) desde una perspectiva discursiva. Además, aunque este proceso del co-liderazgo se realiza sobre la base de recursos verbales y no verbales, el conocimiento sobre el desarrollo de este proceso queda limitado. En este artículo, incorporamos una perspectiva multimodal y, con el método del análisis del discurso, analizamos la constelación del co-liderazgo en una reunión de un movimiento juvenil. Para analizar los procesos del liderazgo en la interacción, los análisis se basan en los conceptos de la postura y la posición deóntica proximal y distal. Además, se investiga el papel de la epistémica en relación con la representación de los derechos deónticos. De los análisis, se desprende que, en esta reunión, hay una distribución clara de los derechos deónticos, a veces relacionada con la posición epistémica de los participantes. Además, el análisis muestra que el co-liderazgo siempre es un proceso esencialmente colaborativo en el que todos los participantes contribuyen. (shrink)

Opstellen over de Amerikaanse filosoof (1839-1914), in het bijzonder over de betekenis van zijn pragmatisme voor de semiotiek.

In recent years the cognitive science community has witnessed the rise of a new, dynamical approach to cognition. This approach entails a framework in which cognition and behavior are taken to result from complex dynamical interactions between brain, body, and environment. The advent of the dynamical approach is grounded in a dissatisfaction with the classical computational view of cognition. A particularly strong claim has been that cognitive systems do not rely on internal representations and computations. Focusing on this claim, we (...) take as a starting point a question recently raised by Cliff and Noble: " if evolution did produce a design that used internal representations, how would we recognize it?" (Knowledge-based vision and simple visual machines, Philosophical Transactions of the Royal Society: Biological Sciences, 352 , 1165-1175, 1997). We will argue that cognitive science lacks a proper operationalization of the notion of representation, and therefore is unable to fruitfully discuss whether a particular system has representations or not. A basic method to detect representations in a physical system, grounded in isomorphism, turns out to be quite unconstrained. We will look at a practical example of this problem by examining the debate on whether or not van Gelder's (What might cognition be, if not computation? Journal of Philosophy, 92 , 345-381, 1995) controversial example of the Watt Governor is representational. We will conclude that cognitive science, as of yet, has no empirically applicable means to answer Cliff and Noble's question unequivocally. This makes the recent representationalism vs. anti-representationalism debate a debate for the sake of appearance. (shrink)

We study the extension of public announcement logic PAL by public assignments, which we call PALA. Just as in the case of PAL, the standard procedure for deciding PALA validity, i.e. the use of so-called reduction axioms to translate PALA formulae into formulae in epistemic logic EL, may lead to exponential growth. In this paper, we show that such a price is not mandatory, for we provide a polynomial translation of PALA into EL. This is based on abbreviations of subformulae (...) by new propositional letters. Such optimal translation also enables us to show the computational complexity of the problem of deciding PALA validity, which turns out to be coNP-complete in the single-agent case and PSPACE-complete in the multiagent case. (shrink)

Research suggests that sedentary behavior is negatively associated with cognitive outcomes. Interrupting prolonged sitting has been shown to improve cognitive functions, including executive functioning, which is important for academic performance. No research has been conducted on the effect of standing on EF in VET students, who make up a large proportion of the adolescent population and who are known to sit more than other students of this age. In this study, we investigated the acute effects of reducing SB by short (...) time standing on EF in vocational education and training students. In a randomized crossover study, 165 VET students were first taught for 15 min in seated position. After this, they performed while seated the Letter Memory Test for updating, and the Color Shape Test for shifting and inhibition. Students were randomly assigned to a sitting or standing condition. All students were taught again for 15 min and then took the same tests in the condition they were allocated to, respectively, standing or seated. After 1 week, the test procedure was repeated, in which students switched conditions. Mixed model analyses showed no significant effect of sitting or standing on updating, shifting, or inhibition. Also, no significant differences were found for the order of condition on updating, shifting, or inhibition. Our results suggest that 40 min of standing does not significantly influence EF among VET students. (shrink)