We use evidence from cognitive psychology and the history of science to examine the issue of the theory-ladenness of perceptual observation. This evidence shows that perception is theory-laden, but that it is only strongly theory-laden when the perceptual evidence is ambiguous or degraded, or when it requires a difficult perceptual judgment. We argue that debates about the theory-ladenness issue have focused too narrowly on the issue of perceptual experience, and that a full account of the scientific process requires an examination (...) of theory-ladenness in attention, perception, data interpretation, data production, memory, and scientific communication. We conclude that the evidence for theory-ladenness does not lead to a relativist account of scientific knowledge. (shrink)
Heteroblastic development is often observed in Cormophytae, but it can also be characterized in Thallophytae as shown by the detailed investigation of the development of the algaAntithamnion plumula (Ceramiaceae, Rhodophyta). In this species, heteroblasty concerns (i) dimensional variables (such as pleuridia length and lateral cladome first tagma length) and (ii) variables that characterize the cell growth kinetics (main axis cells). Apex curvature also varies during ontogenesis.The generality of the property in plants led to search for its origin: apical meristem own (...) dynamics, ontogenetic evolution of internal relationships, dialectical relationships between the plant and its environment. (shrink)
The language $L_A(\Finv)$ is formed by adding the quantifier $\Finv x$ , "few x", to the infinitary logic L A on an admissible set A. A complete axiomatization is obtained for models whose universe is the set of ordinals of A and where $\Finv x$ is interpreted as there exist A-finitely many x. For well-behaved A, every consistent sentence has a model with an A-recursive diagram. A principal tool is forcing for $L_A(\Finv)$.
From antiquity until the 18th century, management served as a model to jointly define hygiene and physiology. I examine representative works of “physiological hygiene » which attempt to deduce norms of hygiene from physiological norms. Although these attempts evidently do not succeed in reducing one set of norms to the other, they raise the question of whether the concept of a norm can be thought of without implying the concept of management.RésuméDepuis l’Antiquité et jusqu’au XVIIIe siècle, le modèle de l’administration (...) a servi à définir conjointement l’hygiène et la physiologie. Nous examinons quelques oeuvres représentatives d’« hygiènes physiologiques » dans lesquelles on tente de déduire les normes hygiéniques des normes physiologiques. Si ces tentatives ne parviennent évidemment pas à réduire les unes aux autres, elles conduisent en revanche à se demander si un concept de norme est pensable sans la représentation d’une gestion. (shrink)
The development of the typical cladomothallus of the red algae Antithaminion plumula (Ellis) Le Jolis [= Pterothamnion plumula (Ellis) Nägcli], (Rhodophyceae, Ceramiales) is simulated with the help of a formal language called L-systems. Two types of uniseriate filaments are distinguished: axial filaments of cladomes with indefinite growth and branching and pleuridia with definite growth and branching. The rythmical acropetal formation of secondary axes with basitonic arrangement contrasts with the intercalary basitonic formation of pleuridia, resulting in an acrotonic arrangement within an (...) axial segment. Five types of cells and two types of cell divisions intervene in the system. In addition, for the graphical representations, some morphological particularities of A. plumula are taken into account: the curvature of axial filaments, the extension of growth zones, variable cell generation times, and segment length variability along an axis. The incidence of these variables on the generated thallus form is emphasized, pointing to the singularities of A. plumula. (shrink)
« Philosophie et sciences » : voilà un thème difficile, central, de notre temps, où il est nécessairement question de son sens. C’est ce sens qu’interrogent, d’une façon à la fois historique et problématique, les essais du présent volume. J. Merleau-Ponty questionne les rapports entre sciences et vulgarisation scientifique. J. Ladrière pose le problème de La normativité de la pensée scientifique. J. Lambert met en évidence le problème du Livre de la Nature chez Galilée et Kepler. P. Kerszberg confronte (...) les structures internes de la philosophie critique kantienne et de la théorie de la relativité sur la question cosmologique. M. Richir analyse L’illusion transcendantale dans la théorie cantorienne des ensembles. B. d’Espagnat et G. Hottois évoquent le problèmes des rapports difficiles, aujourd’hui, entre science et philosophie. (shrink)
It is generally accepted that appropriate documentation of activities and recommendations of ethics consultants in patients’ medical records is critical. Despite this acceptance, the bioethics literature is largely devoid of guidance on key elements of an ethics chart note, the degree of specificity that it should contain, and its stylistic tenor. We aim to provide guidance for a variety of persons engaged in clinical ethics consultation: new and seasoned ethics committee members who are new to ethics consultation, students and trainees (...) in clinical ethics, and those who have significant experience with ethics consultation so that they can reflect on their practice. Toward the goal of promoting quality charting practices in ethics consultations, we propose recommendations on a broad array of questions concerning clinical ethics consultation chart notes, including whether and when to write a chart note, and practical considerations for the tenor, purpose, and content of a chart note. Our broader aim is to promote discussion about good charting practices in clinical ethics, with the hope of contributing to clear standards of excellence in clinical ethics consultation. (shrink)
The meaningful consideration of cultural practices, values and beliefs is a necessary component in the effective translation of advancements in neuroscience to clinical practice and public discourse. Society’s immense investment in biomedical science and technology, in conjunction with an increasingly diverse socio-cultural landscape, necessitates the study of how potential discoveries in neurodegenerative diseases such as Alzheimer disease are perceived and utilized across cultures. Building on the work of neuroscientists, ethicists and philosophers, we argue that the growing field of neuroethics provides (...) a pragmatic and constructive pathway to guide advancements in neuroscience in a manner that is culturally nuanced and relevant. Here we review a case study of one issue in culturally oriented neuroscience research where it is evident that traditional research ethics must be broadened and the values and needs of diverse populations considered for meaningful and relevant research practices. A global approach to neuroethics has the potential to furnish critical engagement with cultural considerations of advancements in neuroscience. (shrink)
The analysis of a growth kinetics y(t) is carried out using the generalized logistic model of Richards — Nelder. Two types of processes, termed mono- and multi-logistic, can be distinguished.In a mono-logistic process, the phenomenon is adequately described by only one logistic function. The growth kinetics is then characterized by the properties of each of phases G 1 to G 4, with boundaries defined by the singular points max, V max and min (Buis, 1991, 1993). The growth structure (temporal or (...) diachronic structure) is defined by the relative contribution of the various phases to the expression of the total growth (duration, growth amount, in relative values per phase, independently of y max). This temporal distribution of the growth activity is a discretized representation of the trajectory y 0 y max. (shrink)
In light of an historical obsession with human error, Krueger & Funder (K&F) suggest that social psychologists should emphasize the strengths of social perception. In our view, however, absolute levels of accuracy (or error) in any given experiment are less important than underlying processes. We discuss the use of the process-dissociation procedure for gaining insight into the mechanisms underlying accuracy and error.
The filamentous and branched thallus of Antithamnion plumula is constitued of two different kinds of branches with apical growth: the cladomial axes with a continuous or indefinite growth, and the pleuridia with a limited growth. The size of the pleuridia depends on their position with respect to the lateral cladomial axes.The growth kinetics of 35 pleuridia were analysed using Nelder's generalized logistics. Each sigmoidal curve, which was divided into four growth stages from the instantaneous acceleration variations, was thus characterized by (...) ten kinetic parameters: lengths at the time of the changes in growth stage, durations of the growth stages and maximum growth rate. (shrink)
While valuable work has been done addressing clinical ethics within established healthcare systems, we anticipate that the projected growth in acquisitions of community hospitals and facilities by large tertiary hospitals will impact the field of clinical ethics and the day-to-day responsibilities of clinical ethicists in ways that have yet to be explored. Toward the goal of providing clinical ethicists guidance on a range of issues that they may encounter in the systematization process, we discuss key considerations and potential challenges in (...) implementing system-wide ethics consultation services. Specifically, we identify four models for organizing, developing, and enhancing ethics consultation activities within a system created through acquisitions: train-the-trainer, local capacity-building, circuit-riding, and consolidated accountability. We note each model’s benefits and challenges. To our knowledge, this is the first paper to consider the broader landscape of issues affected by consolidation. We anticipate that clinical ethicists, volunteer consultants, and hospital administrators will benefit from our recommendations. (shrink)
In Russia a monotheism - Orthodox Christianity - and atheism in its Marxist version have succeeded each other as state systems of rites and representations. Rather than contrasting one with the other, term with term, this paper proposes to bring in a third term: the local religious systems of Russia’s animist minorities. We examine how Christianity and atheism tried one after the other to get established there and also consider the reactions they encountered. The analysis as planned is undertaken on (...) two levels: on an overall level we look at the strategies and aims of the state and its representatives, and on the local level - illustrated by the particular example of the Nenets - concrete and always specific mechanisms are presented, which application of general policy has implemented on the ground. (shrink)
Plants are considered as archetypes of the ramification phenomenon but numerous elementary processes occur in the elaboration of the shaping of each species. This paper aims to identify the part ascribed to different mechanisms in the morphogenesis of a Thallophyte, the red alga Antihamnion plumula.Agonistic-antagonistic models (Bernard-Weil, 1988) can be applied to this alga whose thallus includes two different kinds of whorls, pleuridian and cladomian. In each whorl the agonistic and antagonistic effects are expressed by the full development (S) of (...) the two branches and by their symmetry rate (R) respectively. Variations in S and R show the existence of particular pleuridian whorls having an intermediary dissymmetry and a rhythmic arrangement similarly to that of the cladomian whorls. A unilateral change of the system (removal of a lateral cladome) induces a transitory destabilisation mainly manifested by the stimulating ascendant flow throughout the thallus. (shrink)