The language of manuals may be used to discuss inference in measurement in a general experimental context. Specializing to the context of the frame manual for Hilbert space, this inference leads to state dominance of the inferred state from partial measurements; this in turn, by Sakai's theorem, determines observables which are described by positive operator-valued measures. Symmetries are then introduced, showing that systems of covariance, rather than systems of imprimitivity, are natural objects to study in quantum mechanics. Experiments measuring different (...) polarization components simultaneously are reexamined in this language. Finally, implications of the Naimark extension theorem for the manual approach are investigated. (shrink)

The first main result isolates some conditions which fail for the class of graphs and hold for the class of Abelian p-groups, the class of Abelian torsion groups, and the special class of "rank-homogeneous" trees. We consider these conditions as a possible definition of what it means for a class of structures to have "Ulm type". The result says that there can be no Turing computable embedding of a class not of Ulm type into one of Ulm type. We apply (...) this result to show that there is no Turing computable embedding of the class of graphs into the class of "rank-homogeneous" trees. The second main result says that there is a Turing computable embedding of the class of rank-homogeneous trees into the class of torsion-free Abelian groups. The third main result says that there is a "rank-preserving" Turing computable embedding of the class of rank-homogeneous trees into the class of Boolean algebras. Using this result, we show that there is a computable Boolean algebra of Scott rank ${\mathrm{\omega }}_{1}^{\mathrm{C}\mathrm{K}}$. (shrink)

In this study, complex dynamics of Briggs–Rauscher reaction system is investigated analytically and numerically. First, the Briggs–Rauscher reaction system is reduced into a new nonlinear parametric oscillator. The Melnikov method is used to derive the condition of the appearance of horseshoe chaos in the cases ω = Ω and ω ≠ Ω. The performed numerical simulations confirm the obtained analytical predictions. Second, the prediction of coexisting attractors is investigated by solving numerically the new nonlinear parametric ordinary differential equation via the (...) fourth-order Runge–Kutta algorithm. As results, it is found that the new nonlinear chemical system displays various coexisting behaviors of symmetric and asymmetric attractors. In addition, the system presents a rich variety of bifurcations phenomena such as symmetry breaking, symmetry restoring, period doubling, reverse period doubling, period-m bubbles, reverse period-m bubbles, intermittency, and antimonotonicity. On the contrary, emerging chaotic band attractors and period-1, period-3, period-9, and period-m bubbles routes to chaos occur in this system. (shrink)

Continuous recordings of brain electrical activity were obtained from a group of 176 patients throughout surgical procedures using general anesthesia. Artifact-free data from the 19 electrodes of the International 10/20 System were subjected to quantitative analysis of the electroencephalogram (QEEG). Induction was variously accomplished with etomidate, propofol or thiopental. Anesthesia was maintained throughout the procedures by isoflurane, desflurane or sevoflurane (N = 68), total intravenous anesthesia using propofol (N = 49), or nitrous oxide plus narcotics (N = 59). A set (...) of QEEG measures were found which reversibly displayed high heterogeneity of variance between four states as follows: (1) during induction; (2) just after loss of consciousness (LOC); (3) just before return of consciousness (ROC); (4) just after ROC. Homogeneity of variance across all agents within states was found. Topographic statistical probability images were compared between states. At LOC, power increased in all frequency bands in the power spectrum with the exception of a decrease in gamma activity, and there was a marked anteriorization of power. Additionally, a significant change occurred in hemispheric relationships, with prefrontal and frontal regions of each hemisphere becoming more closely coupled, and anterior and posterior regions on each hemisphere, as well as homologous regions between the two hemispheres, uncoupling. All of these changes reversed upon ROC. Variable resolution electromagnetic tomography (VARETA) was performed to localize salient features of power anteriorization in three dimensions. A common set of neuroanatomical regions appeared to be the locus of the most probable generators of the observed EEG changes. (shrink)

ABSTRACT Global biodiversity declines are increasingly recognized as profound ecological and social crises. In areas subject to colonialization, these declines have advanced in lockstep with settler colonialism and imposition of centralized resource management by settler states. Many have suggested that resurgent Indigenous-led governance systems could help arrest these trends while advancing effective and socially just approaches to environmental interactions that benefit people and places alike. However, how dominant management and conservation approaches might be decolonized (i.e., how their underlying colonial structure (...) might be addressed, transformed, and replaced) is not always clear. Here, we describe a ‘Decolonial Model of Environmental Management and Conservation’ as an alternative paradigm to dominant approaches of conservation and management. The tenets of the model describe characteristics that might be expected of decolonized management, contrasted with those of dominant state-led approaches such as those embedded in the North American Model of Wildlife Conservation. The model does not prescribe how Indigenous governments or communities ought to govern their own territories, but instead offers insights into how external management and conservation agencies and practitioners might support (or stop impeding) Indigenous-led governance. We illustrate the model with a conservation ‘bright spot’: grizzly bear stewardship in the area now referred to as the Great Bear Rainforest in British Columbia, Canada, with a focus on work led by or in collaboration with, and within the territories of, the Haíɫzaqv, Kitasoo/xai’xais, Nuxalk, and Wuikinuxv First Nations. While acknowledging the important context-specific variability among place-based management and conservation applications, we also discuss the model’s broader applicability. (shrink)

In the opening chapter of the Iudicium de Dinarcho Dionysius quotes a passage from the Περì μωνμων of Demetrius Magnes, mat the end of which come the words δ λξις ςτ το Δεινρχου κυρως θικ πθος κινοσα σχεδòν τ πικρí μóνον καì τ τóν το Δημοσθθενικο χαρακτρος λειπομνη το δ πιθανο καì κυρíιυ μηδν νδονσα. [I have deliberately omitted all punctuation marks, because the punctuation of this sentence is still doubtful, though I hope to suggest a possible interpretation of its (...) meaning at the end of this article.] Now there is nothing in this sentence or in the words preceding it to indicate beyond all possibility of doubt the precise meaning ofκυρíως θικ. And in such circumstances, to allow free play to personal prejudices regarding the significance of thephrase is more than dangerous. The whole problem of θικ λξις has been treated too cursorily. If one mentions the phrase to a non-professional student of Greek, who, however, has some acquaintance with the Attic orators, he immediately replies: ‘I suppose you mean the sort of thing you meet in Lysias.’ And he is to beexcused, because, after all, that is the predominant meaning of the term. But it has other senses, and therefore one must fight shy of vague statements like that of Finke, who, after quoting the above lines, comment: ‘Demetrius Magnus attribuit ei τν κυρíαν λξιν qua non sit Demosthene inferior’; or of Burgess, who enumerates qualities, ideas, and topics ‘of special value to the epideictic and court orators, ’ among which appears θοποια which he merely translates ‘impersonation or delineation of character, ’ without offering any further comment. Sandys talks of ‘the ethical warmth of colouring, by which the dullest details are lit up with a fresh life and interest.’ Gromska is even more vague (and seems almost to confuse θς and χαρακτρ: ‘Grammatici antiqui, qui de Hyperide tractabant, de eloquentiae eius genere disputabant, orationum Hyperidearum compositionem et θς respicientes, i.e. quantum in arte rhetorica et oratoria valeret, examinantes.’ In the hope, therefore, of being able to represent the difficulty inherent in these lines, and of attempting to remove it, or at any rate to shed a broader beam of light upon it than has been shed hitherto, I propose to review very briefly the fluctuations of meaning in the life of this phrase and its equivalents, as we find them used in the critical writings of the Greek philosophers and rhetoricians. (shrink)

In the Classical Quarterly, Vol. XXIII. i, pp. 7–10, Mr. Denniston attempts to revive the ancient and once honoured sport of gloss-chasing. But the day of that perilous pastime has gone, and this latest effort is perhaps less successful than some of its predecessors. In his notes on the De Elocution of Demetrius he hunts and traps the unwary ‘gloss’ in his net of criticism, but unfortunately the snare is faulty, and the ‘catch’ escapes. I propose to discuss each of (...) his suggested ‘glosses’ in his order, basing my arguments against his conclusions— on probabilities; on the usage of Demetrius in this work: § 271. καθλου δ νς λEεως τ σματα κα πκρισιν κα γνα παρει τ λοντι, μλιστα τ διαλελυμον, τοτ' στι δειντητα. (shrink)

Nos três problemas preambulares e nas primeiras lições do Commentarium in De anima atribuído a Pedro Hispano, o autor: 1) discute a possibilidade de urna ciência da alma; 2) compara a ciência da alma com as outras ciências naturais; 3) identifica o método da ciência da alma. Daí emerge uma fundamentação da "ciência da alma" como "ciência do homem" e um modelo de organização das ciências, tendencialmente coincidente com a organização do corpus aristotélico, mas com a reivindicação da superioridade da (...) Ciência da alma por razões gnosiológicas. (shrink)

Volume 20, Issue 7, July 2020, Page 150-152.

Background: Informed consent is regarded as a contract between autonomous and equal parties and requires the elements of information disclosure, understanding, voluntariness and consent. The validity of informed consent for critically ill patients has been questioned. Little is known about how these patients experience the process of consent.Objective: The aim of this study was to explore critically ill patients’ experience with the principle of informed consent in a clinical trial and their ability to give valid informed consent.Design: 11 stroke patients (...) who had been informed about thrombolytic treatment and had been through the process of deciding whether or not to participate in a thrombolysis trial went through repeated qualitative semistructured interviews.Results: None of the patients had any clear understanding of the purpose of the trial. Neither did they understand the principles of randomisation and voluntariness. Reasons for giving or not giving consent were trust, conceptions of benefits and risks and altruism. Several patients found it immoral to involve patients in the consent procedure and argued that this was the doctors’ responsibility. Others argued that it is a duty to question patients and perceived it as a sign of being treated with respect and dignity. A majority of the patients found the consent process vague and ambiguous.Conclusions: The results indicate that the principle of informed consent from critically ill patients cannot be seen as a contract between equal and autonomous parties. Further studies are needed to explore critically ill patients’ experiences with the process of informed consent. (shrink)

The focus of this study was to analyze the content, distribution, and comparative genome relationships of 996 chromosome bin-mapped expressed sequence tags accounting for 2266 restriction fragments on the homoeologous group 3 chromosomes of hexaploid wheat. Of these loci, 634, 884, and 748 were mapped on chromosomes 3A, 3B, and 3D, respectively. The individual chromosome bin maps revealed bins with a high density of mapped ESTs in the distal region and bins of low density in the proximal region of the (...) chromosome arms, with the exception of 3DS and 3DL. These distributions were more localized on the higher-resolution group 3 consensus map with intermediate regions of high-mapped-EST density on both chromosome arms. Gene ontology classification of mapped ESTs was not significantly different for homoeologous group 3 chromosomes compared to the other groups. A combined analysis of the individual bin maps using 537 of the mapped ESTs revealed rearrangements between the group 3 chromosomes. Approximately 232 of the consensus mapped ESTs matched sequences on rice chromosome 1 and revealed large- and small-scale differences in gene order. Of the group 3 mapped EST unigenes ∼21 and 32% matched the Arabidopsis coding regions and proteins, respectively, but no chromosome-level gene order conservation was detected. (shrink)