In this paper we examine C. I. Lewis's view on the roleof coherence – what he calls ''congruence'' – in thejustification of beliefs based on memory ortestimony. Lewis has two main theses on the subject. His negativethesis states that coherence of independent items ofevidence has no impact on the probability of a conclusionunless each item has some credibility of its own. Thepositive thesis says, roughly speaking, that coherenceof independently obtained items of evidence – such asconverging memories or testimonies – raises (...) the probabilityof a conclusion to the extent sufficient for epistemicjustification, or, to use Lewis's expression, ''rationaland practical reliance''.It turns out that, while thenegative thesis is essentially correct, astrong positive connection between congruence andprobability – a connection of the kind Lewis ultimatelyneeds in his validation of memory – is contingent on thePrinciple of Indifference. In the final section we assess therepercussions of the latter fact for Lewis's theory in particularand for coherence justification in general. (shrink)

Peirce earned his keep making measurements, mainly of gravity but also astronomical, and he made several contributions to the science of measurement. It has been said that his experience measuring had philosophical consequences: his adoption of fallibilism, his argument against necessitarianism, and his conception of inquiry as converging on the truth have all been mentioned. But not much attention has been paid to the curious episode of his making “the study of great men” part of a course in logic: students (...) were asked to rank a long list of men by order of greatness. That was at Johns Hopkins in 1883. I shall argue that that study, together with his reflections on pre-instrumental estimates of stars’ brightness, bears directly on the method of phaneroscopy formulated nearly two decades later. In each case, the problem is to show how objectivity is possible under conditions in which it must seem that objectivity is impossible. (shrink)

ch. 1. Istorii︠a︡ sot︠s︡iologicheskikh ucheniĭ -- ch. 2. Nauchnai︠a︡ teorii︠a︡ obshchestva.

This book is remarkable for what it does not do. It purports to be about Peirce's opposition to nominalism, but it never states clearly what nominalism is and says little about Peirce's realist alternative. It contains no historical discussion of nominalism and thus does not explain the relation of Peirce's idiosyncratic use of that term to its original meaning. It ignores the secondary literature on that topic and does not even list Rosa Mayorga's highly relevant 2007 book, From Realism to (...) Realicism [sic], in its Bibliography. Nor, despite nominalism's alleged 'threat,' does it make reference to such important recent nominalists as Nelson Goodman or W.V.O. Quine. Indeed, after page one, there is hardly any.. (shrink)

But as you know... my style of ‘brilliancy’ consists in a mixture of irony and seriousness,—the same things said ironically and also seriously.Peirce’s philosophical writings are notoriously difficult. The reasons most often cited are the apparent contradictions, the long, inconclusive technical digressions, and the unfinished character of his thought. His champions instead emphasize his originality, arguing that his apparent contradictions often mark traditional dualisms subtly transcended; some discern strands of an uncompleted system. Originality, subtlety, and the need to reconstruct the (...) whole from its fragmentary expressions also pose difficulties, albeit ones rewarding. I think, however, that the problem... (shrink)

The following paragraphs were written not for print publication but for oral delivery on a celebratory occasion; their many unsupported assertions, some commonplace and some controversial, were made not to prove a thesis but to suggest a point of view—a perspective on Peirce's thought that might be taken, or not, as one wishes. The suggestion is that some difficulties are resolved and some things fall into place if we view his philosophy in its several relations to modern science. For that (...) purpose, his idea of science is of central importance and it is that idea only that I discuss here. Although drawn from the historical fact of modern science, Peirce's concept of science is unusual, radical, and difficult. In... (shrink)

Peirce persistently proclaimed both idealism and realism, terms that in philosophy's history have had varied meanings, in some of which they designate opposed doctrines; his use of them also varied in meaning. The aim of Robert Lane's important new book is to trace the evolution of Peirce's idealism and realism and to show that, in the end, whatever misadventures occur en route, these doctrines, in Peirce's version of them, are not opposed. Lane explores connections to other Peircean topics: truth, pragmatism, (...) modality, generality, vagueness, continuity. However, he retains his focus, which enables him to examine Peirce's idealism and realism with extraordinary care and thoroughness.Lane's method is, in the first... (shrink)

In May 1867, when he was twenty-seven years of age, Charles Peirce read a paper to the American Academy of Arts and Sciences that was published in the next year under the title ‘On a New List of Categories’ (EP 1:1–10).1 It is remarkable for anticipating major features of his later thought: three categories relationally defined (bracketed, however, by two additional categories); a theory of signs, triadically conceived and triadically sub-divided, applied to thinking; the idea that every predicate is an (...) hypothesis; a form of abstraction named ‘prescision’; and a bold reconception of the Roman/medieval trivium. Prescision was used here to distinguish the categories and it was put to similar use much later in the.. (shrink)

This article describes the aircraft image recognition system implemented using the phase correlation technique in Matlab environment. The phase correlation is computed by using the normalized cross-power spectrum between the database and the template test image. The main objective of this article is to develop methods for static analysis of aircraft images. An unknown fighter aircraft is recognized by comparing its static image with those from a database of images of aircraft. This work is a research initiative involving the use (...) of image processing techniques to detect three-dimensional aircraft object based on their 2D images, providing feedback information for strategic purposes. The phase correlation technique is found to give a better recognition result for the set of database and test images considered, compared with the invariant moments. The phase correlation method is also used in other areas such as image registration. Aircraft images used include those from AeroIndia 2011 held at Bangalore, India. (shrink)

This article deals with detection and accommodation of sensor faults in longitudinal dynamics of an F8 aircraft model. Both the detection of the fault and reconfiguration of the failed sensor are done with the help of neural network-based models. Detection of a sensor fault is done with the help of knowledge-based neural network fault detection. Apart from KBNNFD, another neural network model is developed in this article for the reconfiguration of the failed sensor. A model-based approach of the neural network (...) is developed, which uses the radial basis function of the neural network. MBNN successfully does the task of providing analytical redundancy for the aircraft sensor. In this work, both detection and reconfiguration of a fault is done using neural networks. Hence, the control system becomes robust for handling sensor failures near steady state and reconfiguration is also faster. A generalized regression neural network, which is a type of radial basis network, is used for MBNN, which gives very efficient results for function approximation. An F8 aircraft model and C-Star controller, which improves its handling quality, are used for validation of the method involved. Models of F8 aircraft, C-Star controller, KBNNFD, and MBNN were developed using MATLAB/simulink. Successful implementation and simulation results are shown and discussed using Simulink. (shrink)

Aravind Adiga’s novel The White Tiger encapsulates the complexities of identity formation in a milieu effected by neo-capitalism. The novel, for many, is about a new identity made available to the hitherto marginalized in the form of opportunities unveiled by market forces. It is also perceived as a registration of the frustration and anger of the deprived that has become conscious of the new possibilities. Understandably, interpreting the novel on these lines leads to the identification of the protagonist Balram as (...) a champion of the marginalized, settling scores with the oppressive system. However, there are far subtler notes in the protagonist’s attitude to these sweeping changes than the simple and one dimensional approach of an achiever who is able to break the “rooster coop” and revel at the reversal of fortune. Neither is it a representative voice of the suppressed class turning the table on its oppressor by using the opportunities offered by the global market. The “notes” of the voices that emerge as Balram, the boy from darkness, moves up the ladder to become Ashok Sharma, the entrepreneur hiding in light, not only lack symphony but also create a distinct dissonance. Clearly, the discord in the changing notes is brought about by the forces that changed the world he lives in-a neo-capitalist world. The whole process of Balram turning into Ashok Sharma is a neocapitalist coup. (shrink)

Since the introduction and widespread adoption of chemical herbicides, “weed management” has become almost synonymous with “herbicide management.” Over-reliance on herbicides and herbicide-resistant crops has given rise to herbicide resistant weeds. Integrated weed management (IWM) identifies three strategies for weed management— biological-cultural, chemical-technological, mechanical-physical—and recommends combining all three to mitigate herbicide resistance. However, adoption of IWM has stalled, and research to understand the adoption of IWM practices has focused on single stakeholder groups, especially farmers. In contrast, decisions about weed management (...) often occur within a social ecosystem where multiple stakeholder groups co-create knowledge and practices. To more holistically investigate perceptions and decision-making related to herbicide resistant weed management, we conducted 23 in-depth interviews in combination with Q methodology with farmers and public-/private-sector agricultural professionals in the state of Georgia (U.S.). Our investigation focused on the management of an increasingly herbicide resistant weed, Palmer amaranth, which enabled broader conversations about agricultural systems, farmer livelihoods, and sustainability. Factor and thematic analyses allowed us to identify and characterize two distinct typologies: one primarily valued agronomic efficiency and relied upon chemical-technological management practices, while the other valued diversifying weed management strategies as the pathway to agronomic and economic success. Typologies diverged substantially in attitudes toward the three weed management strategies, the role of technology, and systems management generally. These two viewpoints have implications for how we understand underlying stakeholder motivations and choices around weed management strategies, both of which are crucial in promoting and supporting farmer use of diverse, ecologically-sound, weed management strategies. (shrink)

Utilitarian ethics and metaphysical idealism, especially of a Bradleyan sort, are not usually thought of as natural allies. Yet when one considers that it is a crucial part of utilitarian doctrine that the only genuine value is experienced value and almost the definition of idealism that for it the only genuine reality is experienced reality one should surely suspect that the two views have a certain affinity. The essential impulse behind utilitarianism is the sense that the only criterion of something (...) really being intrinsically good is that it feels good. To the ordinary man to say that something feels good is much the same as saying that it is a pleasure, so that for him it is a small step from identifying good with what feels good to identifying it with pleasure. It suggests itself, then, that the utilitarian is essentially one who thinks that, so far as the good goes, esse ispercipi. In that case the utilitarian is an idealist about value. It does not follow that he should be an idealist about things in general, but it does suggest the converse, that the idealist about things in general might be expected to be a utilitarian in his ethics. (shrink)