Using optical add–drop multiplexer/remover multiplexer (OADM), it is possible to add or remove wavelengths and change or route them through the various nodes and networks. At this moment, key problems in add–drop multiplexer (ADM) are the bandwidth, modulation format, and reuse wavelength. In this article, the Optisystem software simulation is used as a platform to design, test, and verify the method applied to the current work; the OADM is proposed based on the metro network to get distribution between nodes over (...) a transmission link; OADM analysis was presented with four channels (193.1, 193.2, 193.3, and 193.4 THz) at total bandwidth of 1.6 Tb/s, none-return-to-zero (NRZ), and return to zero coding types. Experiment one shows that the average output power is −17.997 dBm, the average drop power is −17.997 dBm, and the average add power is −18.338 dBm, the average gain is −0.0429 dB, the average noise figure is 0 dB, the average power input signal is 10.679 dBm, the average of power output signal is 10.633 dBm, and the average output optical signal-to-noise ratio (OSNR) is 0 dB, However, the second experiment shows that the average output power is −24.238 dBm, the average drop power is −24.288 dBm, and the average add power is −24.753 dBm, the average gain is −0.0417 dB, the average noise figure is 0 dB, average power input signal is 7.691 dBm, average of power output signal is 7.677 dBm, and the average output OSNR 0 dB. The system supports four input channels, four add channels, four output channels, and four drop channels. The results are acceptable after three spans of Solitons fiber with 600 km length, 200 km for each span. Nonetheless, it is believed that it is well justified to adopt these schemes in the current optical network with a low cost for overall expenditure. (shrink)

A number of philosophers think that grounding is, in some sense, well-founded. This thesis, however, is not always articulated precisely, nor is there a consensus in the literature as to how it should be characterized. In what follows, I consider several principles that one might have in mind when asserting that grounding is well-founded, and I argue that one of these principles, which I call ‘full foundations’, best captures the relevant claim. My argument is by the process of elimination. For (...) each of the inadequate principles, I illustrate its inadequacy by showing either that it excludes cases that should not be ruled out by a well-foundedness axiom for grounding, or that it admits cases that should be ruled out. (shrink)

This series will include monographs and collections of studies devoted to the investigation and exploration of knowledge, information, and data-processing systems of all kinds, no matter whether human, (other) animal, or machine. Its scope is intended to span the full range of interests from classical problems in the philosophy of mind and philosophical psychology through issues in cognitive psychology and sociobiology (concerning the mental capabilities of other species) to ideas related to artificial intelligence and computer science. While primary emphasis will (...) be placed upon theoretical, conceptual, and epistemological aspects of these problems and domains, empirical, experimental, and methodological studies will also appear from time to time. While most philosophers and psychologists tend to believe that the rise of cognitive psychology has occurred concomitant with the decline of operant psychology, Terry L. Smith contends that nothing could be further from the truth. He maintains that operant psychology has discovered (and continues to discover) reasonably well-confirmed causal principles of intentional behavior, which go beyond what cognitive psychology can provide, while cognitive psychology, in tum, has the potential to supply analyses (and explanations) that account for them. Smith thus advances a surprising but nonetheless illuminating perspective for appreciating the place of operant conditioning within the discipline of psychology in this rich and fascinating work. J. H. F. (shrink)

This is the second article in a series of review articles addressing biosemiotic terminology. The biosemiotic glossary project is designed to integrate views of members within the biosemiotic community based on a standard survey and related publications. The methodology section describes the format of the survey conducted July–August 2014 in preparation of the current review and targeted on Jakob von Uexküll’s term ‘Umwelt’. Next, we summarize denotation, synonyms and antonyms, with special emphasis on the denotation of this term in current (...) biosemiotic usage. The survey findings include ratings of eight citations defining or making use of the term Umwelt. We provide a summary of respondents’ own definitions and suggested term usage. Further sections address etymology, relevant contexts of use, and related terms in English and other languages. A section on the notion’s Uexküllian meaning and later biosemiotic meaning is followed by attempt at synthesis and conclusion. We conclude that the Umwelt is a centerpiece phenomenon, a phenomenon that other phenomena in the living realm are organized around. To sum up Uexküll’s view, we can characterize an Umwelt as the subjective world of an organism, enveloping a perceptual world and an effector world, which is always part of the organism itself and a key component of nature, which is held together by functional cycles connecting different Umwelten. In order to pay respect to Uexküll’s work, we must move from notion to model, from mention of Uexküll’s Umwelt term to actual application of it. (shrink)

It is now generally agreed that in Aristotle's Poetics, ch. 13 means ‘mistake of fact’. The moralizing interpretation favoured by our Victorian forebears and their continental counterparts was one of the many misunderstandings fostered by their moralistic society, and in our own enlightened erais revealed as an aberration. In challenging this orthodoxy I am not moved by any particular enthusiasm for Victoriana, nor do I want to revive the view that means simply ‘moral flaw’ or ‘morally wrong action’. I shall (...) try to show that the word has a range of applications, from ‘ignorance of fact’ at one end to ‘moral defect’, ‘moral error’, at the other, and that the modern orthodoxy, though not as clearly wrong as the moralizing interpretation it displaced, restricts Aristotle's meaning in a way he did not intend, and does lessthan justice to his analysis of classical drama. (shrink)

T. S. Champlin; VII*—Tendencies, Proceedings of the Aristotelian Society, Volume 91, Issue 1, 1 June 1991, Pages 119–134, https://doi.org/10.1093/aristotelian/9.

In a previous paper (Duncan, T.L., Semura, J.S. in Entropy 6:21, 2004) we considered the question, “What underlying property of nature is responsible for the second law?” A simple answer can be stated in terms of information: The fundamental loss of information gives rise to the second law. This line of thinking highlights the existence of two independent but coupled sets of laws: Information dynamics and energy dynamics. The distinction helps shed light on certain foundational questions in statistical mechanics. For (...) example, the confusion surrounding previous “derivations” of the second law from energy dynamics can be resolved by noting that such derivations incorporate one or more assumptions that correspond to the loss of information. In this paper we further develop and explore the perspective in which the second law is fundamentally a law of information dynamics. (shrink)

Among many reasons for which contemporary philosophers take coherentism in epistemology seriously, the most important is probably the perceived inadequacy of alternative accounts, most notably misgivings about foundationalism. But coherentism also receives straightforward support from cases in which beliefs are apparently justified by their coherence. From the perspective of those against coherentism, this means that an explanation is needed as to why in these cases coherence apparently justifies beliefs. Curiously, this task has not been carried out in a serious way (...) in the anti-coherentist literature although there is no scarcity of objections to coherentism. The traditional charge has been that justification by coherence is circular. More recently the isolation problem allegedly reveals that coherentism justifies beliefs that should not be justified. Questions have also been raised with respect to the basing relation and feasibility.1 However, these objections do not explain why some beliefs appear to be justified by their coherence. This paper fills this gap in the anti-coherentist literature by offering a noncoherentist account of justification by coherence. The paper proceeds as follows. Section I delineates the framework of discussion and develops some conceptual tools needed in later analyses. Section II argues that there are genuine cases of an increase in existing empirical justification by coherence, but that it does not require coherence to generate additional justification—coherence serves as a channel of justification among beliefs, which is no more problematic than channeling of justification from basic to derived beliefs in foundationalism. Section III makes a stronger case for justification by coherence, where each of the coherent beliefs has no independent empirical justification; but Section IV argues that even in these cases coherence need not generate justification—coherence licenses the channeling of justification from outside sources.. (shrink)

It is not intended as some sort of revelation on my part that Greenberg's cultural theory was originally Marxist in its stresses and, indeed in its attitude to what constituted explanation in such matters. I point out the Marxist and historical mode of proceeding as emphatically as I do partly because it may make my own procedure later in this paper seem a little less arbitrary. For I shall fall to arguing in the end with these essay's Marxism and their (...) history, and I want it understood that I think that to do so is to take issue with their strengths and their main drift.But I have to admit there are difficulties here. The essays in question ["Avant-Garde and Kitsch" and "Towards a Newer Lacoön"] are quite brief. They are, I think, extremely well written: it was not for nothing the Partisan Review described Clement Greenberg, when he first contributed to the journal early in 1939, as "a young writer who works in the New York customs house"—fine, redolent avant-garde pedigree, that! The language of these articles is forceful and easy, always straightforward, blessedly free from Marxist conundrums. Yet the price paid for such lucidity, here as so often, is a degree of inexplicitness—certain amount of elegant skirting round the difficult issues, where one might otherwise be obliged to call out the ponderous armory of Marx's concepts and somewhat spoil the low of the prose from one firm statement to another. The Marxism, in other words, is quite largely implicit; it is stated on occasion, with brittle and pugnacious finality, as the essay's frame of reference, but it remains to the reader to determine just how it works in the history and theory presented—what that history and theory depend on, in the way of Marxist assumptions about class and capital or even abase and superstructure. That is what I intend to do in this paper: to interpret and extrapolate from the texts, even at the risk of making their Marxism declare itself more stridently than the "young writer" seems to have wished. And I should admit straight away that there are several point in what follows where I am genuinely uncertain as to whether I am diverging from Greenberg's argument or explaining it more fully. This does not worry me overmuch, as long as we are alerted to the special danger in this case, dealing with such transparent yet guarded prose, and as long as we can agree that the project in general—pressing home a Marxist reading of texts which situate themselves within the Marxist tradition—is a reasonable one.22. This carelessness distinguishes the present paper from two recent studies of Greenberg's early writings, Serge Guilbaut's "The New Adventures of the Avant-Garde in America," October 15 , and Fred Orton and Griselda Pollock's "Avant-Gardes and Partisans Reviewed," Art History 3 I am indebted to both these essays and am sure that their strictures on the superficiality—not to say the opportunism–of Greenberg's Marxism are largely right. But I am nonetheless interested in the challenge offered to most Marxist, and non-Marxist, accounts of modern history by what I take to be a justified though extreme, pessimism as t the nature of established culture since 1870. That pessimism is characteristic, I suppose, of what Marxists call an ultraleftist point of view. I believe, as I say, that a version of some such view is correct and would therefore with to treat Greenberg's theory as if it were a decently elaborated Marxism of an ultraleftist kind, on which issues in certain mistaken views but which need not so issue and which might still provide, cleansed of those errors, a good vantage for a history of our culture.T. J. Clark, professor of fine arts at Harvard University, is the author of The Absolute Bourgeois: Artists and Politics in France, 1848-1851 and Image of the People: Gustave Courbet and the 1848 Revolution. His book on impressionist painting and Paris is forthcoming. (shrink)

The book is mainly concerned with the problem of the logical analysis of hypothetical (conditional) statements.

Speaks defends the view that propositions are properties: for example, the proposition that grass is green is the property being such that grass is green. We argue that there is no reason to prefer Speaks's theory to analogous but competing theories that identify propositions with, say, 2-adic relations. This style of argument has recently been deployed by many, including Moore and King, against the view that propositions are n-tuples, and by Caplan and Tillman against King's view that propositions are facts (...) of a special sort. We offer our argument as an objection to the view that propositions are unsaturated relations. (shrink)

This paper presents and defends a model of religious faith as an epistemic disposition. According to the model, religious faith is a disposition to take certain doxastic attitudes toward propositions of religious significance upon entertaining certain mental states. Three distinct advantages of the model are advanced. First, the model allows for religious faith to explain the presence and epistemic appropriateness of religious belief. Second, the model accommodates a variety of historically significant perspectives concerning the relationships between faith and evidence, faith (...) and volition, and faith and doubt. And, finally, the model offers an appealing account of what unifies religious faith with other kinds of faith. (shrink)

Universities are expected to be places where knowledge is shared freely among academicians. However, the reality shows that knowledge sharing is barely present within universities these days. As Malaysia shifts towards building a knowledge-based society, academic institutions, particularly the public universities, now face ever-growing faculty demands for sharing quality resources and expertise. As a result, knowledge sharing in academia has become a rising concern. The purpose of this study, then, is to uncover the factors that propel knowledge sharing among academicians (...) in higher learning institutions of Malaysia. Using the Theory of Reasoned Action as the basis for this study’s research framework, data was gathered from 447 academicians in 10 public universities scattered throughout the country. Findings from the Partial Least Squares analysis revealed that extrinsic motivation, reciprocal relationships, sense of self-worth and subjective norm are vital determinants of an academician’s attitude towards knowledge sharing. In turn, this attitude that is formed will largely determine whether the academician engages in knowledge sharing behaviors or not. Besides having a positive effect on attitude, sense of self-worth also exhibited a positive impact on the subjective norm to share knowledge. Consequently, this subjective norm will have an impact upon knowledge sharing behavior. In addition, perceived behavioral control and organizational climate were discovered to have a direct influence on knowledge sharing behaviors. Implications, limitations as well as suggestions for future research are accordingly discussed in this paper. (shrink)

It is not uncommon to think that the existence of exhaustive and infallible divine foreknowledge uniquely threatens the existence of human freedom. This paper shows that this cannot be so. For, to uniquely threaten human freedom, infallible divine foreknowledge would have to make an essential contribution to an explanation for why our actions are not up to us. And infallible divine foreknowledge cannot do this. There remains, however, an important question about the compatibility of freedom and foreknowledge. It is a (...) question not about the existence of foreknowledge, but about its mechanics. (shrink)

This is the one and only book by the pioneer of the identity theory of mind. The collection focuses on Place's philosophy of mind and his contributions to neighboring issues in metaphysics and epistemology. It includes an autobiographical essay as well as a recent paper on the function and neural location of consciousness.

The ArgumentRecent archival research has brought about a new understanding of the import of Einstein's puzzling remarks (1916) attributing a physical meaning to general covariance. Debates over the scope and meaning of general covariance still persist, even within physics. But already in 1921 Cassirer identified the significance of general covariance as a novel stage in the development of the criterion of objectivity within physics; an account of this development, and its implications, is the primary task undertaken in his monograph of (...) “epistemological considerations” on the theory of relativity. Cassirer's assessment is correct: general covariance, understood as an injunction against dynamical theories with background elements, is a “limiting heuristic principle” guiding Einstein's fundamental conception of a “complete field theory”; as such, it underlies a “separation principle” built into the conceptual framework of the EPR criticism of quantum mechanics. In conclusion, a further parallel is noted: mutual recognition that the principle of general covariance is but a form of “anthropomorphism.”. (shrink)

It is commonly held that respect for autonomy is one of the most important principles in medical ethics. However, there are a number of interpretations as to what that respect actually entails in practice and a number of constraints have been suggested even on our self-regarding choices. These limits are often justified in the name of autonomy. In this paper, it is argued that these different interpretations can be explained and understood by looking at the discussion from the viewpoints of (...) positive and negative liberty and the various notions of a “person” that lay beneath. It will be shown how all the appeals to positive liberty presuppose a particular value system and are therefore problematic in multicultural societies. (shrink)

I am not so insular and I hope not so presumptuous as to suppose that there is no contemporary philosophy apart from that empiricism which dominates very much of Great Britain, North America and Scandinavia. So let us notice that contemporary philosophy embraces broadly three points of view, though it will be part of my argument that they largely combine in the lessons they have to teach us, and in many of their implications for theology.

Debates over egalitarianism for the most part are not concerned with constraints on achieving an egalitarian society, beyond discussions of the deficiencies of egalitarian theory itself. This paper looks beyond objections to egalitarianism as such and investigates the relevant psychological processes motivating people to resist various aspects of egalitarianism. I argue for two theses, one normative and one descriptive. The normative thesis holds that egalitarians must take psychological constraints into account when constructing egalitarian ideals. I draw from non-ideal theories in (...) political philosophy, which aim to construct moral goals with current social and political constraints in mind, to argue that human psychology must be part of a non-ideal theory of egalitarianism. The descriptive thesis holds that the most fundamental psychological challenge to egalitarian ideals comes from what are called Just World Beliefs. A troubling result of Just World Beliefs, one that poses a prima facie obstacle to egalitarianism, is that people tend to dismiss or explain away any threats to their belief that the world is fundamentally just. The pervasiveness and severity of Just World Beliefs predicts that people will be resistant to egalitarian policies. My aim is to show how research on Just World Beliefs can help diagnose common problems for egalitarianism and assist in making realistic recommendations for bringing current societies closer to egalitarian ideals. (shrink)

Quentin Smith contends that modern science provides enough evidence ‘to justify the belief that the universe began to exist without being caused to do so.’ There was a time when such a claim would have been dismissed because it conflicts with a principle absolutely fundamental to all human thought, including science itself. As Thomas Reid expressed the matter: That neither existence, nor any mode of existence, can begin without an efficient cause is a principle that appears very early in the (...) mind of man; and it is so universal, and so firmly rooted in human nature, that the most determined scepticism cannot eradicate it. (shrink)

Most philosophers and psychologists who have explored the psychology of climate change have focused only on motivational issues—getting people to act on what morality requires of them. This is misleading, however, because there are other psychological processes directed not at motivation but rather our ability to grasp the implications of climate change in a general way—what Stephen Gardiner has called the ‘grasping problem’. Taking the grasping problem as my departure point, I draw two conclusions from the relevant psychological literature: 1) (...) ethicists and policy makers should focus less on changing individuals’ behaviors and more on changing policy; and 2) even though solutions to climate change must come at the level of policy, progress on this front will be limited by incompatible moral norms. (shrink)

This classic study of Santayana was the first book to appear in the _Arguments of the Philosophers_ series. Growing interest in the work of this important American philosopher has prompted this new edition of the book complete with a new preface by the author reassessing his own ideas about Santayana and reflecting the new interest in the philosopher's work. A select bibliography of works published about Santayana since the book's first appearance is also included.

« Mais pourquoi diable les humains, sur leur petite planète bleue, s’intéressent-ils à ce point à moi, qui ne suis qu’un extraterrestre? » : telle est la question que pose un E. T. parmi tant d’autres, depuis l’espace intersidéral, à une autrice de science-fiction qui a transformé ce genre littéraire qu’est le space opéra et à un astrophysicien qui est aussi le président du plus grand festival de sciences et de science-fiction en France : les Utopiales à Nantes.