In follow-up to a large-scale ethics survey of neuroscientists whose research involves neuroimaging, brain stimulation and imaging genetics, we conducted focus groups and interviews to explore their sense of responsibility about integrating ethics into neuroimaging and readiness to adopt new ethics strategies as part of their research. Safety, trust and virtue were key motivators for incorporating ethics into neuroimaging research. Managing incidental findings emerged as a predominant daily challenge for faculty, while student reports focused on the malleability of neuroimaging data (...) and scientific integrity. The most frequently cited barrier was time and administrative burden associated with the ethics review process. Lack of scholarly training in ethics also emerged as a major barrier. Participants constructively offered remedies to these challenges: development and dissemination of best practices and standardized ethics review for minimally invasive neuroimaging protocols. Students in particular, urged changes to curricula to include early, focused training in ethics. (shrink)

Differential scanning calorimetry (DSC) has been employed to investigate the glass transition activation energy E g, thermal stability and glass-forming ability (GFA) of Se90In10− x Sb x (x = 0, 2, 4, 6, 8, 10) chalcogenide glasses. DSC runs were performed at six different heating rates. Well-defined endothermic and exothermic peaks were obtained at glass transition and crystallization temperature. The dependence of glass transition temperature T g on heating rate (α), as well as composition of Sb, (...) has been studied. From the dependence of glass transition temperature on heating rate, the E g has been calculated on the basis of the Kissinger [Anal. Chem. 29 (1957) p.1702] and Moynihan [J. Phys. Chem. 78 (1974) p.267] models. Thermal stability has been monitored through the calculation of temperature differences T c–T g, the stability parameter S, and the enthalpy released during crystallization H c. The GFA has been investigated on the basis of the Hruby parameter H r, which is strong indicator of GFA. Results for GFA are in good agreement with fragility index F i calculations, indicating that Se90In6Sb4 is an excellent glass-former. (shrink)

Upshot: The commentaries concentrate mostly on ontological issues but overlook the main epistemological argument in my target article. This argument refers to the conditions that make cognition possible, and to the limits of cognition. These are important for two reasons: they have ontological consequences and they limit the theory’s contingency.

Context: In the literature concerning the theory of social systems, interest in epistemological and ontological questions has increased in recent years. The controversies regarding a realist vs. constructivist interpretation of Luhmann’s theory, as well as the concept of many realities that correspond to many ontologies, deserve attention. Problem: The paper discusses interrelated ontological and epistemological problems in Luhmann’s systems theory, such as ontology and de-ontologization, realism vs. constructivism, contingency and its limits and one vs. many realities. Method: The paper proposes (...) an interpretation, according to which systems theory is based on an epistemology - radical operative constructivism. Results: Luhmann is not a realist. The last word belongs to radical operative constructivism, and naïve realism with reference to social systems has only a preliminary, methodological significance. However, taking a position in the dispute between realism and constructivism inevitably involves an ontological “vocabulary,” that is, usage of the reality/construction distinction. Furthermore, operative constructivism formulates the necessary conditions of the possibility of cognition, which limit the contingency of the theory and constitute one reality that is a construction of systems theory. Luhmann rejects ontology, but he does not renounce epistemology, and consequently the project of de-ontologization remains incomplete. Implications: The paper offers a new, coherent interpretation of ontological and epistemological questions in Luhmann’s theory, and also throws light on some problems of radical constructivism in general, such as the ontological implications of epistemology or the constructivist self-reference of theories. Key words: Radical operative constructivism, social systems, Luhmann, ontology, reality, contingency. (shrink)

Welcome to the world of cutting-edge math, physics, and neuroscience, where the search for the ultimate vacuum, the point of nothingness, ground zero of theory, has rendered the universe deep, rich, and juicy. "Modern physics has animated the void," says K. C. Cole in her entrancing journey into the heart of Nothing. Every time scientists and mathematicians think they have reached the ultimate void, new stuff appears: a black hole, an undulating string, an additional dimension of space or time, repulsive (...) anti-gravity, universes that breed like bunnies. Cole's exploration at the edge of everything is as animated and exciting as the void itself. Take Cole's hand on this adventure into the unknown, and you'll come back informed, amused, and excited. (shrink)

Open peer commentary on the article “Examining the Role of Re-Presentation in Mathematical Problem Solving: An Application of Ernst von Glasersfeld’s Conceptual Analysis” by Victor V. Cifarelli & Volkan Sevim. Upshot: Education researchers often explain student activity in terms of general thinking and learning processes, including those identified by Cifarelli and Sevim. In this commentary, I refocus Cifarelli and Sevim’s discussion in order to hypothesize the organization of mental actions that comprise and support those learning processes.

Some practical problems in the teaching of ethics to medical students are described. The definition of the objectives of the course remains the central aspect, and is more important than the specific content. The use of student projects, buzz groups, case histories and discussion points is described. There is a need for student assessment or examination at the end of the course. The teachers require a broad background in philosophy, clinical medicine and teaching skills. The learning of the teachers may (...) be as important as that of the students. (shrink)

Open peer commentary on the article “The Banathy Conversation Methodology” by Gordon Dyer, Jed Jones, Gordon Rowland & Silvia Zweifel. Upshot: Banathy’s Conversation Methodology and the conversation events where it was developed and practiced had a profound effect on my role as a scholar-practitioner. In this commentary, I reflect on the impact of the BCM in my professional practice as an educator, facilitator, and consultant within the field of social innovation, where participatory processes for eliciting the wisdom of the group (...) are essential. (shrink)

I Propose to re-explore here some aspects of a very shop-worn question: ‘Was Hobbes in any sense an atheist?’ Three centuries ago, Hobbes's personal security in part depended on the way his contemporaries answered this question; today, the validity of several current accounts of his philosophy are similarly bound up with it. These accounts vary extraordinarily, all the way from Polin's confident assertion that ‘ pour qui sait lire entre les lignes, … c'est ľatheísme qui triomphe implicitement ’, to Taylor's (...) equally firm belief that ‘a certain kind of theism is necessary to make [Hobbes's] theory work.’ 1 And now the latest of the Taylorians, Prof. Howard Warrender, has published his book The Political Philosophy of Hobbes , in which Hobbes's statements regarding the place of God are again treated as an essential part of his theory; and the charge explicitly made, that there are no sound grounds for regarding them as ‘the product of confusion or pretence on Hobbes's part’. (shrink)