The representation of a complex but stable, self-regulated and, finally, harmonious nature penetrates the whole history of Ecology, thus contradicting the core of the Darwinian evolution. Originated in the pre-Darwinian Natural History, this representation defined theoretically the various schools of early ecology and, in the context of the cybernetic synthesis of the 1950s, it assumed a typical mathematical form on account of α positive correlation between species diversity and community stability. After 1960, these two aforementioned concepts and their positive correlation (...) were proposed as environmental management tools, in the face of the ecological crisis arising at the time. In the early 1970s, and particularly after May’s evolutionary arguments, the consensus around this positive correlation collapsed for a while, only to be promptly restored for the purpose of attaching an ecological value on biodiversity. In this paper, we explore the history of the diversity–stability hypothesis and we review the successive terms that have been used to express community stability. We argue that this hypothesis has been motivated by the nodal ideological presuppositions of order and harmony and that the scientific developments in this field largely correspond to external social pressures. We conclude that the conflict about the diversity–stability relationship is in fact an ideological debate, referring mostly to the way we see nature and society rather than to an autonomous scientific question. From this point of view, we may understand why Ecology’s concepts and perceptions may decline and return again and again, forming a pluralistic scientific history. (shrink)

We examine the emergence of the field of life-history strategies during the 1950s. (We consider a 'field' an area of scientific activity consisting of a theoretical core, a subject of research, a vocabulary and research tools). During the late 1940s and early 1950s, population ecology faced many problems, concerning its conceptual framework, its mathematical models, experimental deficiencies, etc. Research on life-history characteristics remained descriptive, lacking explanations about the causes and significance of phenomena. This was due to the deficiencies of the (...) theoretical framework of population ecology up to the 1950s. The catalyzing factor for the emergence of the new field was the interdisciplinary impacts, and especially the impact of neodarwinism. The elaboration of a new theoretical core, invoking also methodological shifts, was the triggering factor, conditioning the emergence of the new field. (shrink)

Habitat templets are graphical-qualitative models which describe the development of life-history strategies in specific environmental conditions. In the context of the previous models of life-history strategies, life-history theorists focused on the density-dependent factors as the factors determining life-history strategies. With the use of habitat templets, the focus is oriented towards the environmental causal factors, considering density-dependent phenomena as by-products of the environmental impact. This implies an important shift in causality as well as in the worldview of life-history theorists: population is (...) not considered as a closed system isolated from the environment. The object of study is the organism-in-its-environment, as a complex multilevel system. This shift has also methodological consequences: Life-history theory combines holistic and reductionistic insights, using a variety of heuristic models. This imposes a new conception of generality as well as of the structure of scientific theories. (shrink)

P. Papageorgiou was the last to edit the complete set of the scholia vetera to Sophocles in 1888. The narrow manuscript basis of the edition, the reluctance of the editor to use a sufficient amount of conjectural emendation and the lack of a methodology specific to editing scholia are responsible for a great number of corrupt passages in his text. This article is concerned with the critical restoration of eight such passages from the scholia to the Trachiniae: schol. Trach. 7, (...) 48, 56, 104b, 105b, 379, 434b and 556. (shrink)

Pancreatitis is a complex, progressively destructive inflammatory disorder. Alcohol was long thought to be the primary causative agent, but genetic contributions have been of interest since the discovery that rare PRSS1, CFTR and SPINK1 variants were associated with pancreatitis risk. We now report two associations at genome-wide significance identified and replicated at PRSS1-PRSS2 and X-linked CLDN2 through a two-stage genome-wide study. The PRSS1 variant likely affects disease susceptibility by altering expression of the primary trypsinogen gene. The CLDN2 risk allele is (...) associated with atypical localization of claudin-2 in pancreatic acinar cells. The homozygous CLDN2 genotype confers the greatest risk, and its alleles interact with alcohol consumption to amplify risk. These results could partially explain the high frequency of alcohol-related pancreatitis in men. © 2012 Nature America, Inc. All rights reserved. (shrink)

Die vorliegende Arbeit besteht, von Beigaben wie Indizes und Bibliographie abgesehen, aus einer 124 Seiten umfassenden Einleitung und einer 328 Seiten umfassenden vollständigen Werkausgabe des bisher wenig bekannten Antipalamiten Theodoros Dexios. Seine Schriften, eine von POLEMIS (P.) als „Appellatio“ bezeichnete Beschwerde über die Voreingenommenheit des Ioannes Kantakuzenos auf dem Konzil von 1351, zwei Briefe und ein von P. so genannter „Tractatus brevis de Christo ipso splendente in Transfiguratione“ sind anonym überliefert, zudem auch ohne Überschriften. Zu Beginn der Einleitung wird G. (...) MERCATIs Annahme, daß die Schriften von Dexios verfaßt wurden, gegen J. MEYENDORFF, der sie dem Arsenios von Tyros zuwies, überzeugend verteidigt. Der Autor des 1. Briefes vertrat die merkwürdige Meinung, daß das Thaborlicht mit dem menschlichen Körper Christi identisch gewesen sei (XVI). Diese Ansicht kritisierte Isaak Argyros in seinem Brief an Gedeon unter Namensnennung des Dexios, wie Mercati bereits feststellte (XXIII f.). Daß die genannten Schriften, die teils in Vat. Gr. 1111, teils in Vat. Gr. 1823 überliefert sind (XIII), auf denselben Autor zurückgehen, ist daraus zu erschließen, daß der Schreiber von Vat. Gr. 1823 in Vat. Gr. 1111 Autorenkorrekturen vornahm (XV f.). Ein wichtiger Punkt der Widerlegung Meyendorffs besteht auch darin, daß dieser die Worte des Dexios, die sich auf den Schluß des vom „seligen Gregoras“ inspirierten Glaubensbekenntnisses der Antipalamiten im Jahr 1351 beziehen, nämlich „an letzter Stelle war in ihm (dem Bekenntnis) folgendes zu lesen: ‚Hinsichtlich des Kalabrers Barlaam und des Akindynos sagen wir, daß wir damit einverstanden sind, was die heilige Kirche Gottes entschieden und festgelegt hat‘ (220), indem wir auf unseren Patriarchen verwiesen“, auf Ignatios von Antiochien, den Vorgesetzten des Arsenios, bezog, dieser schmähliche, wenn auch wohl postume Verrat an Akindynos (so unsere Meinung) aber laut P. eine Anerkennung des Tomos von 1341 bedeutet, mit dem Patriarchen demnach Kalekas gemeint ist (XX f.). P. weist nach, daß der Brief des Dexios, auf den sich Argyros in seinem Brief an Gedeon bezieht, trotz gleicher Thematik nicht mit dem von ihm herausgegeben Brief I identisch ist, sondern etwas früher (XXVI versehentlich „later“) geschrieben wurde (XXVI–XXVIII). Die Datierung der „Appellatio“ auf die Zeit zwischen 1351 und 1354 (Sturz des Kantakuzenos) ist sicherlich richtig. Da Gregoras in seinen zweiten „Antirrhetikoi“ wie Dexios von der Nichtveröffentlichung des Tomos von 1351, der Unvollständigkeit der erworbenen Abschrift wie auch von der Gefahr spricht, durch den Herrscher ermordet zu werden (s. JÖB 36, 1986, 263 f. 276), ist laut meiner Datierung (s. JÖB 27, 1978, 146, Nr. 70) 1353 als wahrscheinliches Datum der Abfassung anzusehen. P. verfaßte eine bemerkenswerte Anmerkung zu Georgios von Pelagonia (XXXI f., A. 65). Die Identifizierung des Georgios Gabrielopulos mit Georgios, dem Philosophen, geht auf R.-J. LOENERTZ und F. TINNEFELD zurück, die mögliche Identifizierung des Georgios von Pelagonia mit Gabrielopulos auf mich (s. PLP II, Nr. 3433 und Talbot in ODB II 838 f., die PLP ausschreibt). Inzwischen bin ich zu dem Schluß gekommen, daß Georgios von Pelagonia, der an Akindynos Kritik übt, auf Grund seiner guten Informiertheit kein anderer sein kann als Akindynos, der wegen seiner Voreingenommenheit gegen Barlaam im Jahr 1341 Selbstkritik übt. Akindynos stammte aus der Region von Pelagonia. Möglicherweise ist er nach seiner Flucht aus Konstantinopel 1347 mit Hilfe Stefan Dušans sogar Bischof von Pelagonia geworden. (shrink)

Im Jahre 1886 erregte I. Hilberg großes Aufsehen, als er in einem Artikel über die Autorschaft des Christus patiens auf die verschiedene Behandlung der dichrona bei den Jambographen der byzantinischen Epoche hinwies – die bis heute herrschende Anschauung geht dahin, dass α, ι und υ bei den byzantinischen Jambographen ausnahmslos mittelzeitig sind – und, je nach der absoluten Korrektheit in der Versifikation, sowohl was die Quantität als was die Zäsuren betraf, die Autoren in drei Gruppen meinte einreihen zu können: die (...) Classiker, die Epigonen und die Stümper. P. Maas griff diesen Standpunkt quasi unmittelbar an; er bemerkte sarkastisch, dass in diesem Fall Georgios Pisides, umstrahlt von der Glorie reinster Quantität einsam über allen anderen Dichtern in der einsamen Höhe seines „klassischen“ Himmels thronen würde, und dass die Byzantiner in Wirklichkeit von der Quantität der Vokale nichts hörten, da dieselben einfach isochron geworden waren. Dies hat nicht verhindert, dass F. Scheidweiler lange danach doch untersucht hat, ob die Poesie des Joannes Geometres noch der antiken Quantitätslehre entspricht, oder konkreter: dem Metrum des jambischen Trimeters:In diesem Beitrag möchte ich, mit den Untersuchungen von Scheidweiler als Richtschnur, der Frage nachgehen, in welchem Maβe der Dichter in seiner Μετάφϱασις των ώδων tatsächlich noch die antike Metrik respektiert. (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)

K. J. Dover, in Greek Homosexuality, p. 125 n. 1, observes: ‘My interpretation ad loc., that drosos is Cowper's secretion, appearing when the boy's penis has been erected by titillation, is far-fetched, but no other interpretation so far seems to me to pay enough attention to the semantics of drosos or to explain why Right regards the beauty of “drosos and down” as incompatible with anointing below the navel’.

RésuméLa psychanalyse se pose comme savoir quant à certains aspects de l'esprit humain et comme instrument pour y apporter des changements. II y a relativement peu de travaux consacrés à la structure de ce savoir ou aux modalités ?action de cet instrument. Ce travail se propose ?examiner brièvement ce qui dans l'oeuvre du pionnier de la psychanalyse – Sigmund Freud –, ou à partir ?elle, permet ?entrevoir les réponses qui pourraient être apportées à de telles questions.

We generalize the concept of a cooperative non-transferable utility game by introducing a socially structured game. In a socially structured game every coalition of players can organize themselves according to one or more internal organizations to generate payoffs. Each admissible internal organization on a coalition yields a set of payoffs attainable by the members of this coalition. The strengths of the players within an internal organization depend on the structure of the internal organization and are represented by an exogenously given (...) power vector. More powerful players have the power to take away payoffs of the less powerful players as long as those latter players are not able to guarantee their payoffs by forming a different internal organization within some coalition in which they have more power.We introduce the socially stable core as a solution concept that contains those payoffs that are both stable in an economic sense, i.e., belong to the core of the underlying cooperative game, and stable in a social sense, i.e., payoffs are sustained by a collection of internal organizations of coalitions for which power is distributed over all players in a balanced way. The socially stable core is a subset and therefore a refinement of the core. We show by means of examples that in many cases the socially stable core is a very small subset of the core.We will state conditions for which the socially stable core is non-empty. In order to derive this result, we formulate a new intersection theorem that generalizes the KKMS intersection theorem. We also discuss the relationship between social stability and the wellknown concept of balancedness for NTU-games, a sufficient condition for non-emptiness of the core. In particular we give an example of a socially structured game that satisfies social stability and therefore has a non-empty core, but whose induced NTU-game does not satisfy balancedness in the general sense of Billera. (shrink)

Jealousy often wreaks havoc among those who love each other. There are many different forms of jealousy. These can be brought to light by scrutiny of grammar, which discloses the scope and limits of the concept of jealousy and hence too of the emotion it subsumes. In Bronzino's painting, Jealousy has a livid complexion (a mixture of yellow and black bile). Robert Herrick's poem in Anthony Frederick Sandys's painting, however, associates jealousy with yellow. In this, he too was following the (...) doctrine of the humours, which explained jealousy by reference to an excess of the choleric humour of yellow bile that causes anger, irritability, boldness, envy, jealousy, and courage. The chapter elaborates the manifold differences between two emotions, envy and jealousy, and the corresponding character traits and motives. The comparison involves numerous for the most parts, and normallys. (shrink)

Even though Plamondon's kinematic model fits the data well, we do not share the view that it explains movements other than ballistic ones. The model does not account for closed-loop control, which is the more common type of movement in everyday life, nor does it account for recent data indicating interference with ongoing processing.