The preparation of layers of amorphous Se by plasma-enhanced CVD using the hydride H2Se as precursor gas is described. Information concerning the structure of the films was obtained from Raman spectroscopy. The spectra of amorphous Se indicated that the dominant molecular structure is the eight-membered ring and/or a chain with Se8 molecular fragments. This material exhibited reversible photodarkening when illuminated at 77 K. In order to explain this phenomenon, we propose a mechanism which takes into account the role of the (...) lone-pair electron orbitals of Se in their contribution to structural ordering. Illumination can cause a distortion in the normal bonding direction between nearest-neighbour Se atoms and induce in this way intrinsic defect states located at the band edges. In the photo-darkened state, optical transition will occur between these defect states. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Homeric ΔΙΙΠΕΤΕΟΣΠΟΤΑΜΟΙΟand the Celestial NileR. Drew GriffithHomeric διιπετής, which occurs only in the verse–end formula διιπετέος (Il. 16.174, 17.263, 21.268, 326; Od. 4.477, 581, 7.284; cf. Hes. fr. 320 Merkelbach–West), is usually interpreted as "fallen from Zeus, i.e., from heaven,... fed or swollen by rain" (LSJ),1 for high–thundering, cloud–gatherer Zeus is the sky who rains and snows (Il. 12.25; Od. 9.111, 14.457, Alc. Z 14.1 Lobel–Page 5 338.1 Voigt; (...) Ar. Nub. 368, 373; Babrius 65.1; Marcus Aurelius 5.7), and rivers can be "swollen by rain and melted snow" (). Yet it only takes a moment for the desperate nature of this interpretation to become clear: it has at least four flaws.2First, there is διι–. We may explain the quantity of the second iota (long in διιπετής, short in Διί) either as metrical lengthening, or as a survival of the Mycenaean, with or without the emendation to διειπετής proposed by one Zenodorus (schol. E2Od. 4.477, var. l. Zenodotus, HQ) and supported by some moderns,3 but the form itself is unexpected. Even supporters of the usual interpretation admit that διι is a very odd way of saying "from Zeus," which should be expressed by a [End Page 353] genitive of source:4 indeed, when Euripides wants to characterize a statue as having "fallen from the sky," he uses διοπετής (IT 977; cf. fr. 971 Nauck2 ). They account for διι- in one of three ways: either as chosen on the analogy of διίφιλος where the dative is appropriate,5 or as a compendious expression meaning "by (the command of) Zeus,"6 as an Arcado– Cypriot use of the dative as an ablative.7 This last approach relies in turn on the hypothesis (itself controversial) of an Achaean stratum of the Homeric language, in which are alleged to persist forms specific to the Mycenaean dialect.8Second, the final element, πετής, is elsewhere in Homer derived from πέτομαι (Il. 12.201, etc.;Il. 8.42, etc.; cf. Hes. Theog. 267). Unlike διιπετής, these words are accented paroxytone (but note παλιμπετές Il. 16.395, Od. 5.27, which means "falling or flying backward"; Pind. Pyth. 3.105; and Aesch. Supp. 782), but this shows only that during the Alexandrian period, when the written accents were devised, scholars associated them with a different root from διιπετής. Leaving our word aside, for examples of -πετής derived from πίπτω we must look to Aeschylus, Pindar, and subsequent authors.9 (Words with πετής from πετάννυμι are attested in later Greek.)10Third, the earliest post–Homeric uses of διιπετής (Eur. Bacch. 1267, Rhes. 43, Hypsipyle fr. 1. sp. IV, 1.31 Bond; Hippoc. Morb. Mul. 1.24) demand the translation "translucent" vel sim. (Etym. Magn. s.v.), and Zenodotus (apud schol. Il. 17.263) glosses the word in its Homeric use as διαυγής,11 yet the semantic development from "fallen from Zeus, etc." (on the usual interpretation) to "translucent" can only be seen as "encore inexpliqué."12 [End Page 354]Fourth, one of the three named rivers to which Homer applies διιπετής is the Nile (Od. 4.477, 581; the others are Spercheius, Il. 16.174, and Scamander, Il. 21.268, 326), yet if ever there were a river that is not "fed or swollen by rain" it is the Nile: rainfall is scarce in Egypt (Hdt. 3.10.3), and, knowing this, Diogenes hypothesized that the Nile was fed by subterranean springs (64 A18 Diels–Kranz; cf. Sen. Q.Nat. 4.2.28–30, 6.8.3–5; schol. Ap. Rhod. 4.269 = p. 277 Wendel). The application of the epithet to the Nile would have, therefore, to be classed among Homer's (admittedly numerous) formulary illogicalities.13Not all scholars accept the usual view. In 1958 M. Treu pointed to a then newly discovered papyrus fragment of Alcman containing the adjective διαιπετής in the phrase (III 66–67 PMG, PMGF = fr. 26.66–67 Calame), which was taken to describe a star "falling through..., less prob.... flying through" heaven (LSJ Suppl. s.v.),14 to hypothesize that the Homeric instances of διιπετής are all miscorrections of an original διαιπετής, "flying through." This theory has won few adherents,15 and R. Renehan (1972b) has with more... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Homeric ΔΙΙΠΕΤΕΟΣΠΟΤΑΜΟΙΟand the Celestial NileR. Drew GriffithHomeric διιπετής, which occurs only in the verse–end formula διιπετέος (Il. 16.174, 17.263, 21.268, 326; Od. 4.477, 581, 7.284; cf. Hes. fr. 320 Merkelbach–West), is usually interpreted as "fallen from Zeus, i.e., from heaven,... fed or swollen by rain" (LSJ),1 for high–thundering, cloud–gatherer Zeus is the sky who rains and snows (Il. 12.25; Od. 9.111, 14.457, Alc. Z 14.1 Lobel–Page 5 338.1 Voigt; (...) Ar. Nub. 368, 373; Babrius 65.1; Marcus Aurelius 5.7), and rivers can be "swollen by rain and melted snow" (). Yet it only takes a moment for the desperate nature of this interpretation to become clear: it has at least four flaws.2First, there is διι–. We may explain the quantity of the second iota (long in διιπετής, short in Διί) either as metrical lengthening, or as a survival of the Mycenaean, with or without the emendation to διειπετής proposed by one Zenodorus (schol. E2Od. 4.477, var. l. Zenodotus, HQ) and supported by some moderns,3 but the form itself is unexpected. Even supporters of the usual interpretation admit that διι is a very odd way of saying "from Zeus," which should be expressed by a [End Page 353] genitive of source:4 indeed, when Euripides wants to characterize a statue as having "fallen from the sky," he uses διοπετής (IT 977; cf. fr. 971 Nauck2 ). They account for διι- in one of three ways: either as chosen on the analogy of διίφιλος where the dative is appropriate,5 or as a compendious expression meaning "by (the command of) Zeus,"6 as an Arcado– Cypriot use of the dative as an ablative.7 This last approach relies in turn on the hypothesis (itself controversial) of an Achaean stratum of the Homeric language, in which are alleged to persist forms specific to the Mycenaean dialect.8Second, the final element, πετής, is elsewhere in Homer derived from πέτομαι (Il. 12.201, etc.;Il. 8.42, etc.; cf. Hes. Theog. 267). Unlike διιπετής, these words are accented paroxytone (but note παλιμπετές Il. 16.395, Od. 5.27, which means "falling or flying backward"; Pind. Pyth. 3.105; and Aesch. Supp. 782), but this shows only that during the Alexandrian period, when the written accents were devised, scholars associated them with a different root from διιπετής. Leaving our word aside, for examples of -πετής derived from πίπτω we must look to Aeschylus, Pindar, and subsequent authors.9 (Words with πετής from πετάννυμι are attested in later Greek.)10Third, the earliest post–Homeric uses of διιπετής (Eur. Bacch. 1267, Rhes. 43, Hypsipyle fr. 1. sp. IV, 1.31 Bond; Hippoc. Morb. Mul. 1.24) demand the translation "translucent" vel sim. (Etym. Magn. s.v.), and Zenodotus (apud schol. Il. 17.263) glosses the word in its Homeric use as διαυγής,11 yet the semantic development from "fallen from Zeus, etc." (on the usual interpretation) to "translucent" can only be seen as "encore inexpliqué."12 [End Page 354]Fourth, one of the three named rivers to which Homer applies διιπετής is the Nile (Od. 4.477, 581; the others are Spercheius, Il. 16.174, and Scamander, Il. 21.268, 326), yet if ever there were a river that is not "fed or swollen by rain" it is the Nile: rainfall is scarce in Egypt (Hdt. 3.10.3), and, knowing this, Diogenes hypothesized that the Nile was fed by subterranean springs (64 A18 Diels–Kranz; cf. Sen. Q.Nat. 4.2.28–30, 6.8.3–5; schol. Ap. Rhod. 4.269 = p. 277 Wendel). The application of the epithet to the Nile would have, therefore, to be classed among Homer's (admittedly numerous) formulary illogicalities.13Not all scholars accept the usual view. In 1958 M. Treu pointed to a then newly discovered papyrus fragment of Alcman containing the adjective διαιπετής in the phrase (III 66–67 PMG, PMGF = fr. 26.66–67 Calame), which was taken to describe a star "falling through..., less prob.... flying through" heaven (LSJ Suppl. s.v.),14 to hypothesize that the Homeric instances of διιπετής are all miscorrections of an original διαιπετής, "flying through." This theory has won few adherents,15 and R. Renehan (1972b) has with more... (shrink)

Electronegativity, described by Linus Pauling described as “The power of an atom in a molecule to attract electrons to itself” (Pauling in The nature of the chemical bond, 3rd edn, Cornell University Press, Ithaca, p 88, 1960), is used to predict bond polarity. There are dozens of methods for empirically quantifying electronegativity including: the original thermochemical technique (Pauling in J Am Chem Soc 54:3570–3582, 1932), numerical averaging of the ionisation potential and electron affinity (Mulliken in J Chem Phys (...) 2:782–784, 1934), effective nuclear charge and covalent radius analysis (Sanderson in J Chem Phys 23:2467, 1955) and the averaged successive ionisation energies of an element’s valence electrons (Martynov and Batsanov in Zhurnal Neorganicheskoi Khimii 5:3171–3175, 1980), etc. Indeed, there are such strong correlations between numerous atomic parameters—physical and chemical—that the term “electronegativity” integrates them into a single dimensionless number between 0.78 and 4.00 that can be used to predict/describe/model much of an element’s physical character and chemical behaviour. The design of the common and popular medium form of the periodic table is in large part determined by four quantum numbers and four associated rules. However, adding electronegativity completes the construction so that it displays the multi-parameter periodic law operating in two dimensions, down the groups and across the periods, with minimal ambiguity. (shrink)

We discuss five kinds of representations of rationales and provide a formal account of how they can alter disputation. The formal model of disputation is derived from recent work in argument. The five kinds of rationales are compilation rationales, which can be represented without assuming domain-knowledge (such as utilities) beyond that normally required for argument. The principal thesis is that such rationales can be analyzed in a framework of argument not too different from what AI already has. The result is (...) a formal understanding of rationales, a partial taxonomy, and a foundation for computer programs that represent and reason with rationales.The five kinds of rationales are as follows: (c)ompression and (s)pecialization, which yield rules, and (d)isputation, which yields a decision. These are modeled as potentially changing the focus of the dispute. Then there are (f)it, a rationale for rules, and (r)esolution, a rationale for decisions. These cannot be modeled as simply; they force disputation to a meta-level, at least temporarily. (shrink)

Este artigo recorda os principais aspectos e motivações da Expedição Langsdorff, missão de reconhecimento do interior do Brasil iniciada em 1821, composta pelo cônsul russo barão Langsdorff, o pintor alemão Moritz Rugendas, Aimé-Adrien Taunay, Nicolas-Antoine Taunay, o polígrafo Hercules Florence e o especialista em mapas Néster G. Rubtsov. Busca diferenças entre esta expedição e iniciativas outras, a título de exemplo, as dos bandeirantes e jesuítas, bem como a expedição indigenista de Rondon, e propõe o aprofundamento das investiga­ções. Apresenta atributos resgatados (...) pela poesia brasileira contemporânea e elementos cons­titutivos da identidade cultural brasileira presentes na Expedição Langsdorff, os quais os auto­res sugerem ser relevantes para pesquisadores do tema e para a inserção do Brasil no contexto internacional político, diplomático e econômico nos tempos hodiernos. (shrink)

Health care professionals often face moral dilemmas. Not dealing constructively with moral dilemmas can cause moral distress and can negatively affect the quality of care. Little research has been documented with methodologies meant to support professionals in care for the homeless in dealing with their dilemmas. Moral case deliberation is a method for systematic reflection on moral dilemmas and is increasingly being used as ethics support for professionals in various health-care domains. This study deals with the question: What is the (...) contribution of MCD in helping professionals in an institution for care for the homeless to deal with their moral dilemmas? A mixed-methods responsive evaluation design was used to answer the research question. Five teams of professionals from a Dutch care institution for the homeless participated in MCD three times. Professionals in care for the homeless value MCD positively. They report that MCD helped them to identify the moral dilemma/question, and that they learned from other people’s perspectives while reflecting and deliberating on the values at stake in the dilemma or moral question. They became aware of the moral dimension of moral dilemmas, of related norms and values, of other perspectives, and learned to formulate a moral standpoint. Some experienced the influence of MCD in the way they dealt with moral dilemmas in daily practice. Half of the professionals expect MCD will influence the way they deal with moral dilemmas in the future. Most of them were in favour of further implementation of MCD in their organization. (shrink)

What we perceive is the product of an intrinsic process and not part of external physical reality. This notion is consistent with the philosophical position of transcendental idealism but also agrees with physiological findings on the thalamocortical system. -Frequency rhythms of discharge activity from thalamic and cortical neurons are facilitated by cholinergic arousal and resonate in thalamocortical networks, thereby transiently forming assemblies of coherent oscillations under constraints of sensory input and prefrontal attentional mechanisms. Perception and conscious experience may be based (...) on such assemblies and sensory input to thalamic nuclei plays merely a constraining role in their formation. In schizophrenia, the ability of sensory input to modulate self-organisation of thalamocortical activity may be generally reduced. If during arousal thalamocortical self-organisation is underconstrained by sensory input, then attentional mechanisms alone may determine the content of perception and hallucinations may arise. (shrink)

Many physicists regard the flow of time as an illusion. There is an upper level flow of time, the phenomenon of past/present/future; and there is a lower level flow of time which is really a flow of events. Perceptual completion accounts for the lower level flow of time in a few ways: apparent movement; amodal completion; and dynamic change as exemplified by a newly described modal completion that we called happening. It acts like an illusory percept connecting discrete stimuli in (...) all sensory modalities. The past/present/future distinction cannot exist unless an object is perceived to be the same now as it is then. This cognition requires object persistence. Experiments with object persistence suggest the circumstances when that, too, is an illusory percept. The illusory percepts of object persistence and perceptual completion can account for the entire flow of time. Our findings and conclusions are congruent with a few time theories and cosmologies that suggest that the flow of time is an illusion. (shrink)

The integration of a Responsible Research and Innovation (RRI) approach to food systems can contribute to redirect research and innovation toward the Sustainable Development Goal (SDG) 2 - Zero hunger - as well as other intertwined SDGs. Even though the scientific literature bridging RRI and food systems has grown over the past years, no critical reviews of this scholarship are currently available. This paper fills this gap by producing a critical review of the scientific literature on RRI in food systems (...) that has been published between 2017 and 2023. Our search led to a selection of 47 research articles that were analysed for this review. Our findings show that studies in this scholarship have focused on the stages of inputs/agricultural production, with a focus on digital technologies for agriculture. When analysing the motivations for applying RRI, we found that this varied from reasons that are more market-related, such as increasing technologies’ societal acceptance, to a reorientation of food systems towards the tackling of societal challenges. Concerning the conceptualization of RRI in food systems, we found that scholars relied on a widely known definition, but its interpretation varied greatly among the studies. Finally, we analysed how RRI has been applied in this literature and found that while some scholars provided examples of responsible innovation, others applied it to analyse innovation governance, and others used RRI to analyze research projects or innovations to ‘improve’ their alignment with this concept. Overall, this literature review showed that there is a need to develop more collaborative and reflexive work to unlock RRI’s potential to inform policy and practice that can foster more responsive and inclusive food systems capable of achieving SDG2. (shrink)

The 1973 archeological discovery of important documents of classical thought known as the Huang-Lao Boshu coupled with advancements in contemporary jurisprudence make possible a reassessment of the philosophies of pre-Qin and early Han China. This study attempts to elucidate the importance of the Huang-Lao school within the intellectual tradition of China through a comparison of the Boshu's philosophical position, particularly its understanding of the relation between law and morality, with the respective views of major thinkers of the period--Confucius, Han Fei, (...) Lao Zi, Zhuang Zi, and to a lesser extent, Shen Dao, Shen Buhai and the authors of the Guan Zi and He Guan Zi. So doing reveals Huang-Lao to be a unique and sophisticated social and political philosophy which, until its expulsion from court by Emperor Wu and subsequent adoption by Daoist religion, served as the ideological foundation for the post-Qin reforms of the early Han. (shrink)

Error is protean, ubiquitous and crucial in scientific process. In this paper it is argued that understanding scientific process requires what is currently absent: an adaptable, context-sensitive functional role for error in science that naturally harnesses error identification and avoidance to positive, success-driven, science. This paper develops a new account of scientific process of this sort, error and success driving Self-Directed Anticipative Learning (SDAL) cycling, using a recent re-analysis of ape-language research as test example. The example shows the limitations of (...) other accounts of error, in particular Mayo’s (Error and the growth of experimental knowledge, 1996) error-statistical approach, and SDAL cycling shows how they can be fruitfully contextualised. (shrink)

Understanding of organizational ethics phenomena requires complex understanding of organizational practices in their real world contexts. We can try to understand and build theory about these complex real world practices from the points of view of: a traditional deductive, ethics literature-based, literature gap formulation approach; or, an inductive, practitioner-based literature gap formulation approach. This consideration of inductive, practitioner-based versus deductive, literature-based literature gap formulation is related to the discussion concerning “engaged scholarship” and relationships and gaps between theory and practice in (...) organization studies [Van De Ven, 2007, Engaged Scholarship: A Guide for Organizational and Research Knowledge ]. However, there is an important difference with respect to the key issue of ethics literature versus practitioner-based literature gap formulation. This article offers examples of the two different approaches and makes comparisons between them. Implications for practice-based organizational ethics theory building, Ph.D. education, and public intellectual work are considered. (shrink)

RésuméL'objet du présent article est de dégager la signification philosophique des différents théoriémes de métamathématique relatifs à la puissance des formalisations. Ces théorèmes représentent la partie de l'épistémologie qui peut être exposée dans la forme technique de la science elle‐même et rassemblant les éléments d'une réflexion autocritique de la pensée mathématique sur elle‐même. Au‐delà, ils invitent à comprendre l'acte de la pensée mathématique comme déploiement d'un projet pensant supposant à la fois une initiative volontaire de la pensée, un champ intuitif (...) absolument indéfini et une exigence logique régulatrice, et amènent la philosophie de la science à se demander si, telles qu'ellcs sont, les mathématiques sont l'unique forme de synthèse rigoureuse possible entre ces trois moments de la pensée. (shrink)

The cento of Proba has recently enjoyed a remarkable upsurge of scholarly interest. A welcome translation was provided in 1981, and an article of five years later, scrutinizing the evidence for its date and authorship, has aroused much controversy. In two recent contributions vindicating the traditional date new or more precise suggestions have been made about the poem's historical context. In between these, yet another article has argued, without confirming or refuting the revised dating and attribution, that in various ways (...) the work reflects the interest of the aristocratic ladies of the Anician family. And now there is a second article by Danuta Shanzer, repeating many of her early points and adding some interesting new ones. All this sudden attention is not unmerited, for as Herzog observed long ago the work is not of the comic or trivializing kind that Ausonius envisaged in his comments on the genre and does not degrade Vergil but rather, at least in the often quoted words of its prefatory poem, ‘improves’ him. (shrink)

Using the ideas of Clifford Geertz, Adolf Portmann, Charles Taylor, and others, I seek to develop and expand Polanyi’s account of language and its role in our human way of being bodily mindful in the world. The expansion of Polanyi’s ideas on language in the evolutionary rise of Homo sapiens and in the moral and mental development of the child does two things that I believe are important: (1) obviates the need to appeal to an incorporeal thinking substance - i.e., (...) dualism - to ground the reality of human transcendence, and (2) highlights the place of natural language in the irreducibility of human mentality. (shrink)

This essay gives a brief overview of Transhumanism and explores a few of its central ideas in the light of Polanyi’s views about embodiment, Marxism, and reality’s hierarchal order, concluding that although Polanyi would likely appreciate the possibilities of cyborgic augmentation that feature in the Transhumanist route to the posthuman, he would utterly repudiate its metaphysics of disembodied intelligence and its underlying technological determinism.

Hutsuls, as one of the ethnic groups of the Ukrainian people, are undoubtedly, along with fights and lemmas, among the most striking exponents of the spiritual culture of the Carpathian Ukrainians. The great attractiveness of the Hutsul's geographical space of habitation could not but affect their worldviews, bright mentality and original patterns of traditional culture. Along with unsurpassed specimens of folk architecture, folk art, choreography, the original pearls of the Hutsul's spiritual heritage include their songs.