Two recent hypotheses have proposed that non‐green plant colouration evolved as a defence against herbivores, either as protective colouration promoting handicap signals indicating plant fitness or by undermining their crypsis. The handicap hypothesis posits a co‐evolutionary process between plants and herbivores, whereas the anti‐crypsis hypothesis suggests that an arms race between insects and plants is the evolutionary mechanism. Both explanations assume that insects are the evolutionary origin causing plants' colouration. Here, we propose a different hypothesis, termed the “Defence Indication hypothesis”. (...) This idea focuses on the multiple protective functions of anthocyanins and carotenoids as pigments, and suggests that plant colouration evolved primarily in response to various stressors. Because pigments and defensive compounds share a common biosynthesis, the production of pigments also provides elevated defensive strengths against herbivores, a process termed priming. In effect, the Defence Indication hypothesis predicts that pleiotropic effects of the pigments and, more generally, plants' shared defence responses, explain why insects might react to plant colouration. BioEssays 28:65–71, 2006. © 2005 Wiley Periodicals, Inc. (shrink)

An incomplete degree is cuppable if it can be joined by an incomplete degree to a complete degree. For sets fulfilling some type of simplicity property one can now ask whether these sets are cuppable with respect to a certain type of reducibilities. Several such results are known. In this paper we settle all the remaining cases for the standard notions of simplicity and all the main strong reducibilities.

Ihr gegenüber betont Benedikt XVI. die Bedeutung der Wahrheit für das individuelle, soziale und kulturelle Leben. Er unterstreicht die Fähigkeit des Menschen, die Wahrheit zu erkennen.

Music can reduce stress and anxiety, enhance positive mood, and facilitate social bonding. However, little is known about the role of music and related personal or cultural variables in maintaining wellbeing during times of stress and social isolation as imposed by the COVID-19 crisis. In an online questionnaire, administered in 11 countries, participants rated the relevance of wellbeing goals during the pandemic, and the effectiveness of different activities in obtaining these goals. Music was found to be the most effective activity (...) for three out of five wellbeing goals: enjoyment, venting negative emotions, and self-connection. For diversion, music was equally good as entertainment, while it was second best to create a sense of togetherness, after socialization. This result was evident across different countries and gender, with minor effects of age on specific goals, and a clear effect of the importance of music in people's lives. Cultural effects were generally small and surfaced mainly in the use of music to obtain a sense of togetherness. Interestingly, culture moderated the use of negatively valenced and nostalgic music for those higher in distress. (shrink)

Name der Zeitschrift: Das Mittelalter Jahrgang: 23 Heft: 2 Seiten: 241-253.

The audit profession’s technical and ethical standards require the application of professional skepticism throughout the financial statement audit process, as auditor skepticism is essential for detecting financial statement fraud and protecting the investing public. However, recent research suggests that audit supervisors often punish staff for exercising skepticism, presenting auditors with an ethical conflict between acting in their own self-interest and acting in a way that improves audit quality and protects the public. This research also suggests that supervisors who reward appropriate (...) skeptical behavior, regardless of the outcome, appear to develop staff that are more likely to detect and convey fraud red flags to their superiors. Building on this research, we use a case-based survey to identify the characteristics of audit supervisors (audit seniors and managers) who are more likely to reward appropriate skepticism, even if it ultimately does not identify a misstatement. We find that trait skepticism, especially suspending one’s judgment, positively drives the evaluations of professional skepticism in our setting. Also, we observe that when supervisors believe that their own audit partner will view the skepticism favorably, they “pay it forward” by rewarding their own staff who engage in skepticism. Our findings identify the characteristics that audit firms may want to develop and foster in auditors rising to supervisory levels. (shrink)

We show constructively that every quasi-convex, uniformly continuous function \ with at most one minimum point has a minimum point, where C is a convex compact subset of a finite dimensional normed space. Applications include a result on strictly quasi-convex functions, a supporting hyperplane theorem, and a short proof of the constructive fundamental theorem of approximation theory.

Die Unverzichtbarkeit der Beratung bzw. Prüfung einer medizinischen Studie durch eine Ethikkommission ist weithin anerkannt. Dennoch sind Forschungsethikkommissionen immer wieder der Kritik, z.B. nach mehr Effizienz, Transparenz oder Konsistenz ausgesetzt. Evaluationsinstrumente für Ethikkommissionen beinhalten oft implizite Vorstellungen „guter“ Qualität. Aus ethischer Sicht sind vor allem der Schutz der Versuchsperson und eine vertretbare Schaden-Nutzen-Bewertung wichtig. Der interdisziplinäre Sammelband geht der Frage auf den Grund, wie sich eine Qualitätsverbesserung aus ethischer Sicht gewährleisten und umsetzen lässt. Der Inhalt · Ethikkommissionen im rechtlichen und (...) ethischen Diskurs · Rechtliche Rahmenbedingungen von Ethikkommissionen in der Schweiz und organisatorische und prozedurale Qualitätskriterien · Forschungs-Ethikkommissionen in der Schweiz: Qualitätsbewertung aus ethischer Sicht · Ethikkommissionen als Patientenschutzkommissionen · Die ethische Aufgabe von Ethikkommissionen angesichts normativer Divergenz von Therapie und Forschung · Ethische Theorien und die Bewertung von Forschungsvorhaben · Kriterien für die ethische Qualität des Begutachtungsprozesses · Schutz der Versuchsperson: Forderungen aus ethischer Sicht zur Struktur-, Prozess- und Ergebnisqualität Die Herausgeber Prof. Dr. Monika Bobbert lehrt und forscht zur Moraltheologie und Medizinethik an der Universität Münster. Dr. Gregor Scherzinger ist wissenschaftlicher Mitarbeiter am Institut für Sozialethik der Universität Luzern. (shrink)

Im 82. Brief an Lucilius führt Seneca den Versuch, mittels Dialektik in Form eines Syllogismus von der Todesfurcht zu befreien, durch seine eigene unnachahmliche Art der Psychagogie ad absurdum. Der bisher im Einzelnen noch nicht hinreichend erklärte Text wird durch eine ausführliche Einleitung und einen Kommentar (mit durchgängiger interpretierender Übersetzung) erschlossen. Die Einleitung ordnet den Brief in die dialektische Tradition der Stoiker ein, beleuchtet römische Einschätzungen der Dialektik und versucht auf dieser Basis Senecas durchaus differenzierte Position herauszuarbeiten. Den Hauptteil bildet (...) ein detaillierter Kommentar mit textkritischen, sprachlichen und sachlichen Erläuterungen. (shrink)

Against recent criticisms of idealism coming from the camp of the so-called New Realists, this volume shows that there is (and always has been) more to idealism than mind-centered ontology. The chapters by a group of both leading and up-and-coming scholars show that idealism can be approached from a plethora of angles, both contemporary and historically inspired, and that this broader view is precisely what may save its reputation in the 21st century.

El presente trabajo explora las conceptualizaciones actuales de la capacidad de resistencia que se aplican a personas con habilidades-diversas. El concepto de ‘ableísmo’ es presentado y se demuestra su utilidad como un lente analítico. Los resultados indican que un enfoque ecológico a la capacidad de resistencia representa un problema para el avance de los derechos de las personas con habilidades diversas. En concreto, la presencia de asunciones y lenguaje ‘ableístas’ demuestran una continua necesidad de examen crítico de las políticas relacionadas (...) con la capacidad de resistencia y su capacidad para incorporar a la población con habilidades diversas. Sugerimos que una ética feminista del cuidado de personas con habilidades diversas contribuye a la comprensión de la capacidad de resiliencia, promoviendo una agenda positiva de los derechos de las personas con habilidades diversas y dando una dirección positiva para políticas en esta área. Los resultados seguramente ayudaran a hacer frente a las lagunas existentes en la literatura de este tema, y serán de gran importancia para los responsables de políticas, investigadores, y la población con habilidades diversas. (shrink)

In this paper we analyse in the framework of constructive mathematics (BISH) the validity of Farkas' lemma and related propositions, namely the Fredholm alternative for solvability of systems of linear equations, optimality criteria in linear programming, Stiemke's lemma and the Superhedging Duality from mathematical finance, and von Neumann's minimax theorem with application to constructive game theory.

Matter and Form explores the relationship between natural science and political philosophy from the classical to contemporary eras, taking an interdisciplinary approach to the philosophic understanding of the structure and process of the natural world and its impact on the history of political philosophy. It illuminates the importance of philosophic reflection on material nature to moral and political theorizing, mediating between the sciences and humanities and making a contribution to ending the isolation between them.

Diz o ditado que "quem não gosta de samba, bom sujeito não é: ou é ruim da cabeça ou doente do pé". Os filósofos tradicionalmente são doentes do pé e muitos deles certamente são ruins da cabeça. Isso parece tornar o tema desse livro pouco viável. Entretanto, tentamos mesmo assim. Afinal gente ruim da cabeça também é inconsequente. Na verdade, esse livro é a continuação do desejo compartilhado por seus diversos autores de aproximar a filosofia da cultura brasileira. E nada (...) melhor para tornar esse diálogo palpável do que o motivo fornecido pelo samba. Afinal, ele é uma de nossas manifestações nacionais mais típicas, difundidas e que tem sobrevivido a várias transformações ao longo do tempo. Através desse livro, esperamos ter nos tornado menos doentes do pé e menos ruins da cabeça -- apesar de quase todos gostarem de samba. (shrink)

If we want to understand how extremist group ideologies are established, we have to comprehend the social processes which form the basis of the emergence and distribution of such beliefs. In our chapter, we present an innovative approach to examining these processes and explaining how they function: with the method of computer-based simulation of opinion formation, we develop heuristic explanatory models which help to generate new and interesting hypotheses. The focus is thereby not on individuals and their idiosyncrasies but on (...) the dynamic mutual adaptation of beliefs in a group. These dynamics can produce an incremental establishment of “charismatic” opinion leaders and an increasing radicalization and alienation. A prototype of such a simulation model has produced promising first results which are presented and discussed. (shrink)