This paper deals with the problem of derivational redundancy in scientific explanation, i.e. the problem that there can be extremely many different explanatory derivations for a natural phenomenon while students and experts mostly come up with one and the same derivation for a phenomenon (modulo the order of applying laws). Given this agreement among humans, we need to have a story of how to select from the space of possible derivations of a phenomenon the derivation that humans come (...) up with. In this paper we argue that the problem of derivational redundancy can be solved by a new notion of “shortest derivation”, by which we mean the derivation that can be constructed by the fewest (and therefore largest) partial derivations of previously derived phenomena that function as “exemplars”. We show how the exemplar-based framework known as “Data-Oriented Parsing” or “DOP” can be employed to select the shortest derivation in scientific explanation. DOP’s shortest derivation of a phenomenon maximizes what is called the “derivational similarity” between a phenomenon and a corpus of exemplars. A preliminary investigation with exemplars from classical and fluid mechanics shows that the shortest derivation closely corresponds to the derivations that humans construct. Our approach also proposes a concrete solution to Kuhn’s problem of how we know on which exemplar a phenomenon can be modeled. We argue that humans model a phenomenon on the exemplar that is derivationally most similar to the phenomenon, i.e. the exemplar from which the largest subtree(s) can be used to derive the phenomenon. (shrink)

Abstract Since their inception, distributional models of semantics have been criticized as inadequate cognitive theories of human semantic learning and representation. A principal challenge is that the representations derived by distributional models are purely symbolic and are not grounded in perception and action; this challenge has led many to favor feature-based models of semantic representation. We argue that the amount of perceptual and other semantic information that can be learned from purely distributional statistics has been underappreciated. We compare the representations (...) of three feature-based and nine distributional models using a semantic clustering task. Several distributional models demonstrated semantic clustering comparable with clustering-based on feature-based representations. Furthermore, when trained on child-directed speech, the same distributional models perform as well as sensorimotor-based feature representations of children’s lexical semantic knowledge. These results suggest that, to a large extent, information relevant for extracting semantic categories is redundantly coded in perceptual and linguistic experience. Detailed analyses of the semantic clusters of the feature-based and distributional models also reveal that the models make use of complementary cues to semantic organization from the two data streams. Rather than conceptualizing feature-based and distributional models as competing theories, we argue that future focus should be on understanding the cognitive mechanisms humans use to integrate the two sources. (shrink)

In some sentences, demonstratives can be substituted with definite descriptions without any change in meaning. In light of this, many have maintained that demonstratives are just a type of definite description. However, several theorists have drawn attention to a range of cases where definite descriptions are acceptable, but their demonstrative counterparts are not. Some have tried to account for this data by appealing to presupposition. I argue that such presuppositional approaches are problematic, and present a pragmatic account of the target (...) contrasts. On this approach, demonstratives take two arguments and generally require that the first, covert argument is non-redundant with respect to the second, overt argument. I derive this condition through an economy principle discussed by Schlenker (2005). (shrink)

Nomological dispositionalism has occupied a center stage in contemporary metaphysics about laws, holding the view that laws of nature derive from an ontology of intrinsically modal dispositional properties. This view faces, though, various challenges, some of which are worth revisiting. Among them, dispositionalism about properties condemns laws to ontological redundancy; its reconstruction of properties does not seem to fit with experimentalism; it introduces a view of metaphysical modality that ambiguously moves between (_de dicto_) logical modality and (_de re_) physical (...) modality; and it assumes fundamentalist meta-metaphysical presuppositions. Rather than dismantling nomological dispositionalism –quite the contrary, we believe it is a valuable theory–, we aim at identifying those nodes where alternative strategies could be followed in a theory of laws. (shrink)

Within the last five years, a number of specific growth factors have been localized in developing lesions of atherosclerosis. This localization of growth factors that is not observed in normal vessels, together with the pleotrophic activities of growth factors, have suggested a role for growth factors in atherosclerotic lesion progression. However, based on in vitro studies, many of the growth factors identified in lesions have overlapping target cells and are derived from the same cellular sources. What is the relative role (...) of the specific growth factors identified? How is the their activity altered by the local conditions in the vessel wall? How do different risk factors for atherosclerosis alter the balance between growth factors and their natural regulators? Evidence for the involvement of specific growth factors in the progression of lesions of atherosclerosis is discussed, as well as the multiple levels at which the activities of these growth factors may be regulated by the vessel wall. (shrink)

We discuss in this essay the alternative techniques proposed for the isolation of human embryonic stem cells (hESCs) that attempt to satisfy moral issues surrounding killing embryos but show that these techniques are either redundant or do not achieve their intended aim. We discuss the difficulties associated with defining a human embryo and how the lack of clarity on this issue antagonises the ethical debate and impedes hESC research. We present scientific evidence showing that isolation of hESCs does not necessarily (...) "kill" human embryos. In addition, we argue that even those who accord inviolable moral status to the embryo should agree that hESC research is morally obligatory, as it is beneficial to the developmental potential of the embryo and society as a whole. (shrink)

Statistical regularities of the environment are important for learning, memory, intelligence, inductive inference, and in fact, for any area of cognitive science where an information-processing brain promotes survival by exploiting them. This has been recognised by many of those interested in cognitive function, starting with Helmholtz, Mach, and Pearson, and continuing through Craik, Tolman, Attneave, and Brunswik. In the current era, many of us have begun to show how neural mechanisms exploit the regular statistical properties of natural images. Shepard proposed (...) that the apparent trajectory of an object when seen successively at two positions results from internalising the rules of kinematic geometry, and although kinematic geometry is not statistical in nature, this is clearly a related idea. Here it is argued that Shepard's term, “internalisation,” is insufficient because it is also necessary to derive an advantage from the process. Having mechanisms selectively sensitive to the spatio-temporal patterns of excitation commonly experienced when viewing moving objects would facilitate the detection, interpolation, and extrapolation of such motions, and might explain the twisting motions that are experienced. Although Shepard's explanation in terms of Chasles' rule seems doubtful, his theory and experiments illustrate that local twisting motions are needed for the analysis of moving objects and provoke thoughts about how they might be detected. Key Words: Chasles' rule; evolution; geometry; perception; redundancy; statistics; twisting. (shrink)

Recently Ekman gave a derivation in natural deduction such that it either contains a substantial redundant part or else is not normal. It is shown that this problem is caused by a non-normality inherent in the usual modus ponens rule.

Definite articles and demonstratives share many features in common including a related etymology and a number of parallel communicative functions. The following paper is concerned with developing a novel proposal on how to distinguish the two types of expression. First, crosslinguistic evidence is presented to argue that demonstratives contain locational markers that are employed in deictic uses to force contrastive focus and accentuate an intended referent against a contextual background. Conversely, definite articles lack such markers. Demonstratives are thus more likely (...) to force referential interpretations, whereas definite descriptions are more open to attributive ones. Second, an analysis of determiner phrases is provided to illustrate that certain syntactic projections capture deictic differences between the two expressions. Semantic correlates of the proposal are then considered before it is situated with respect to contemporary work distinguishing the two categories on the basis of a non‐redundancy condition (that the overt noun phrase complement of a demonstrative may not denote a singleton set), which I suggest is derivative on the presence of contrastive deictic markers in demonstratives. (shrink)

We abandon as redundant the assumption that there exists something more in the physical world than action quanta, which constitute the atoms of the events of which the four-dimensional world consists. We derive metric, energy, matter, etc., from action and the structure formed by the quanta. In the microworld thequantization of space so introduced implies deviations from conventional metrics that make it possible in particular to explain nonlocality. The uncertainty relations, then, in conjunction with the action-based metric, appear to play (...) an essential role in making direct physical contact between emission and absorption events (i.e., retroactivity) possible, which concretely answers Bohr's conjecture that microprocesses constitute “wholes.” All of this appears to afford a realistic explanation of wave-particle “duality,” the EPR and other quantum paradoxes, the hidden variable problem, the “collapse” of wave packets, and the wave interference mechanism with the ¦ ϕ ¦2 rule. (shrink)

In Difference and Repetition, Charles Darwin was the philosopher of individuals and the priority of individual differences. His theory of evolution inaugurated ‘the thought of individual difference’. (DR 248) For Darwin, the individual and its differences come first. Species-specific characteristics do not exist until natural selection does its work on individual differences over geological time. It is not the individual that is derivative in relation to the genus of the species, which was the conclusion of Aristotlean science. Rather, it is (...) the species that ‘is an illusion—inevitable and well founded, it is true—in relation to the play of the individual and individuation. . . . It is the individual which is above the species and precedes the species in principle’. (DR 250) Twelve years later, in A Thousand Plateaus, a neo-Darwinist theme intrudes. Individuals are described as effects of populations. Species-identity (‘form’) depends on codes, and codes apply only to populations, not individuals. ‘Organic form depends on an autonomous code’, a neo-Darwinist mantra they repeat four times in less than ten pages. Individuals are coded because they emerge amid populations that are coded, and changes in code primarily affect populations by affecting the ability of the code to propagate, which requires the agency of individual organisms. No code is impervious to decoding, organically expressed as mutation, genetic drift, and the re-purposing of redundancy. Fragments of code transfer across forms symbiotically. All organic forms become machinic, interlocking partial objects in an ecological economy. Forms depend on populations, populations imply codes, codes undergo decoding and displacement, natural selection does its work, and the rest is history. (shrink)

The overdetermination problem has long been raised as a challenge to nonreductive physicalism. Nonreductive physicalists have, in various ways, tried to resolve the problem through appeal to counterfactuals. This essay does two things. First, it takes up the question whether counterfactuals can yield an appropriate notion of causal redundancy and argues for a negative answer. Second, it examines how this issue bears on the mental causation debate. In particular, it considers the argument that the overdetermination problem simply does not (...) arise on a dependency conception of causation and shows why this idea, though initially appealing, does not address the real problem. As the essay shows, the idea derives its spurious plausibility from the fact that the dependency conception cannot even make sense of our pretheoretic idea of causal redundancy. The essay concludes by briefly discussing a possible picture of mental causation that suggests itself in light of these results. (shrink)

The principle of modal ubiquity - that every truth is necessary or contingent - and the validity of possibility introduction, are principles that any modal theory suffers for failing to accommodate. Advanced modal claims are modal claims about entities other than spatiotemporally unified individuals (perhaps, then, spatiotemporally disunified individuals, sets, numbers, properties, propositions and events). I show that genuine modal realism, as it has thus far been explicitly developed, and in so far as it deals with advanced modal claims, cannot (...) accommodate the principles in question. On behalf of the genuine modal realist I motivate and propose a redundancy interpretation of advanced possibility claims and extend that interpretation to the cognate cases of necessity, impossibility and contingency. I then show that the problematic principles as they apply to advanced modal claims can be derived from these interpretations. I show further how the proposed interpretation enables the genuine modal realist to deal with a number of objections that centre on the alleged inadequacy of the genuine modal realist's expressive resources. I conclude that genuine modal realism emerges the stronger for having been shown capable of dealing with advanced modal claims on the basis of no conceptual and ontological resources beyond those it requires to deal with ordinary modal claims. (shrink)

In addition to providing an account of the empirical facts of language, a theory that aspires to account for language as a biologically based human faculty should seek a graceful integration of linguistic phenomena with what is known about other human cognitive capacities and about the character of brain computation. The present article compares the theoretical stance of biolinguistics (Chomsky 2005, Di Sciullo and Boeckx 2011) with a constraint-based Parallel Architecture approach to the language faculty (Jackendoff 2002, Culicover and Jackendoff (...) 2005). The issues considered include the necessity of redundancy in the lexicon and the rule system, the ubiquity of recursion in cognition, derivational vs. constraint-based formalisms, the relation between lexical items and grammatical rules, the roles of phonology and semantics in the grammar, the combinatorial character of thought in humans and nonhumans, the interfaces between language, thought, and vision, and the possible course of evolution of the language faculty. In each of these areas, the Parallel Architecture offers a superior account both of linguistic facts and of the relation of language to the rest of the mind/brain. (shrink)

Developing early results of Prawitz, Tennant proposed a criterion for an expression to count as a paradox in the framework of Gentzen’s natural deduction: paradoxical expressions give rise to non-normalizing derivations. Two distinct kinds of cases, going back to Crabbé and Tennant, show that the criterion overgenerates, that is, there are derivations which are intuitively non-paradoxical but which fail to normalize. Tennant’s proposed solution consists in reformulating natural deduction elimination rules in general form. Developing intuitions of Ekman we show that (...) the adoption of general rules has the consequence of hiding redundancies within derivations. Once reductions to get rid of the hidden redundancies are devised, it is clear that the adoption of general elimination rules offers no remedy to the overgeneration of the Prawitz–Tennant analysis. In this way, we indirectly provide further support for a solution to one of the two overgeneration cases developed in previous work. (shrink)

Soofi makes a persuasive case that a modified version of Nussbaum’s capabilities approach can be used to develop effective care guidelines for persons with dementia. 1 I agree with Soofi that, so elaborated, the capabilities approach can avoid the four problems that are typically taken to beset dignitarian theories—redundancy, exclusion, speciesism and vagueness. Moreover, I do not seek to challenge the utility of the care guidelines Soofi derives from the capabilities approach—they are clear, practicable and appropriately wide-ranging. I do, (...) however, challenge the idea that this framework would be sufficient to protect the dignity of those with dementia. To see the gap that remains to be filled, we need to unpack what Soofi’s approach can say about the wrong of degrading treatment. In the context of explaining the need to differentiate respect for dignity from respect for autonomy, Soofi notes that ‘abusive, degrading or insulting forms of caregiving... (shrink)

While scientific inquiry crucially relies on the extraction of patterns from data, we still have a far from perfect understanding of the metaphysics of patterns—and, in particular, of what makes a pattern real. In this paper we derive a criterion of real-patternhood from the notion of conditional Kolmogorov complexity. The resulting account belongs to the philosophical tradition, initiated by Dennett :27–51, 1991), that links real-patternhood to data compressibility, but is simpler and formally more perspicuous than other proposals previously defended in (...) the literature. It also successfully enforces a non-redundancy principle, suggested by Ladyman and Ross, that aims to exclude from real-patternhood those patterns that can be ignored without loss of information about the target dataset, and which their own account fails to enforce. (shrink)

In the age of big data, machine learning models are globally used to execute default risk prediction. Imbalanced datasets and redundant features are two main problems that can reduce the performance of machine learning models. To address these issues, this study conducts an analysis from the viewpoint of different balance ratios as well as the selection order of feature selection. Accordingly, we first use data rebalancing and feature selection to obtain 32 derived datasets with varying ratios of balance and feature (...) combinations for each dataset. Second, we propose a comprehensive metric model based on multimachine learning algorithms to select the best-derived dataset with the optimal balance ratio and feature combination. Finally, the convolutional neural network is trained on the selected derived dataset to evaluate the performance of our approach in terms of type-II error, accuracy, G-mean, and AUC. There are two contributions in this study. First, the optimal balance ratio is found through the classification accuracy, which changes the deficiency of the existing research that samples are imbalanced or the balance ratio is 1 : 1 and ensures the accuracy of the classification model. Second, a comprehensive metric model based on the machine learning algorithm is proposed, which can simultaneously find the best balance ratio and the optimal feature selection. The experimental results show that our method can noticeably improve the performance of CNN, and CNN outperforms the other four commonly used machine learning models in the task of default risk prediction on four benchmark datasets. (shrink)

Machiavellianism is a popular construct in research on ethics and organizational behavior. This research has demonstrated that Machiavellianism predicts a host of counterproductive, deviant, and unethical behaviors. However, individuals high in Machiavellianism also adapt to their organizational surroundings, engaging in unethical behavior only in certain situations. Nevertheless, the utility of Machiavellianism has been questioned. Meta-analyses have demonstrated that psychopathy out-predicts Machiavellianism for most antisocial outcomes. Thus, many researchers assume Machiavellianism is a derivative and redundant construct. However, researchers examining the utility (...) of Machiavellianism may be asking the wrong question about how Machiavellianism is unique. In our review, we find it less informative to ask about what antisocial behaviors Machiavellianism predicts. Instead, we find it more informative to ask when Machiavellianism predicts antisocial behaviors. Drawing on Field Theory and Trait Activation Theory, we argue that Machiavellianism is a trait that is associated with person × environment interactions. Their adaptive nature is made possible through the presence of impulse control and environmental sensitivity to punishment, two characteristics that individuals high in psychopathy lack. Consequently, individuals high in Machiavellianism constrain their antisocial behavior to environments when the benefits outweigh the costs. Thus, environmental context, especially the risk of external punishment, moderates Machiavellian misbehavior more than it does for those high in psychopathy. These behavioral constraints align with Lewin’s argument that behavior is a function of the person, environment, and interaction between the two. From this discussion, we arrive at recommendations pertaining to the future of Machiavellianism research in organizational and other applied settings. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Siren Songs: Gender, Audiences, and Narrators in the OdysseyErwin F. CookLillian Doherty. Siren Songs: Gender, Audiences, and Narrators in the Odyssey. Ann Arbor: University of Michigan Press, 1995. viii 1 220 pp. Cloth, $37.50.Siren Songs makes a significant contribution to feminist literature on Homer. Most importantly, Doherty is able to show in detail how the very sensibilities that make Homer appealing to the modern reader can seduce the (...) unwary into accepting the poem’s androcentric frame of reference. If her book’s ideological model based on gender and class hierarchy leads to repeated imprecisions and reductionism, this affects its argument in detail, but not in outline.Doherty’s methodology is objectivist, assumes an essentialist definition of the female, and consciously avoids positioning the Odyssey in the context of archaic Greek gender constructions. One place where she at least acknowledges that the Odyssey originated in a specific culture exposes a problem some will have with this book: “It may be objected that my conclusions are hardly surprising given the aristocratic focus of early Greek epic and the patriarchal norms of archaic Greek society. In this context, it may be urged, the surprise is to see lower-class and female characters even this fully represented” (170). She responds that her conclusions refute arguments by Farron and Rose that in giving prominence to female and lower-class characters Homer makes an antiaristocratic statement. This tactic runs the risk of reducing her own efforts to a book-length refutation of a pair of articles.Many Homerists will also be surprised to read that “the production and reception of a narrative text is never a direct act of communication between the author and the external audience but a ‘bracketed’ or mediated communication” (87). Thus, the poem’s external audience is not “composed of living human beings, who have read and judged the epic since its creation, but... a hypothetical audience posited by the epic narrator” (19). Further, no true repetition exists in literature (182–83). These assertions derive from critical approaches to the modern novel, and although true to a certain extent of all literature they are arguably least true of poetry composed in performance using metrical formulae.Chapter 1 surveys scholarship on whether Penelope recognizes Odysseus before the mnesterophonia. Doherty argues that Penelope’s motivation remains obscure because of an accumulation of narrative indeterminacies created by multiple focalization (45–46; though cf. her apparent assumptions on 143). She lauds Felson-Rubin and Winkler for their insistence on regarding Penelope as an agent capable of acting in her own self-interest, and equal to her husband in metis. Yet they ultimately fail to stand outside the poem’s androcentric frame of [End Page 461] reference and to see that Penelope’s excellence is based on traits she shares with males. It thus becomes necessary to establish narrative openings that expose “instabilities within ideology” (52) or permit the reader “to project active and even subversive female subject positions” (63). Narrative redundancies serving to reinforce the androcentric frame must also be acknowledged, however, for opening the text may inadvertently render its androcentric frame more palatable.Chapters 2 and 3 reconstruct the poem’s internal and external audiences. Doherty argues that these audiences included women. Although Eumaeus’ ability to evaluate the beggar’s storytelling ability proves he is no stranger to epic performance, he “must be considered an ‘overhearer’ rather than a member of the regular audience” (72–73). Eumaeus can, however, support a very different view of class relationships in Homer: when Telemachus appears unexpectedly, Eumaeus kisses his eyes and greets him as a father greets a long-absent son, and Telemachus addresses him as atta; Eumaeus is able to buy a slave on his own; and he may have an advisory role at court since he says he used to question people claiming to have seen his master.The Nekuia is central to Doherty’s project in these chapters. Odysseus’ decision to pause after his catalogue of women divides the Nekuia “roughly along gender lines, and draws attention to the fact that the internal audience of Phaeacians is also marked for gender” (67). In her approval of Odysseus’ tale, Arete... (shrink)

This chapter examines the problem of unity and considers how it is possible for one thing to exist in and through a plurality of parts or phases. It begins with a general discussion of the existence of composite things. The chapter considers the view that composite entities are always an 'ontological free lunch', things that can be freely posited without incurring any cost in relation to ontological economy or Ockham's Razor. It looks at the issue of causal redundancy, a (...) consideration which suggests that positing composite entities as fundamental things is in fact quite costly, something to be undertaken only with strong reasons. The chapter examines three candidates for fundamental composite entities: heaps, artifacts, and organisms. It considers question of which sorts of composite things exist at all, whether fundamentally or derivatively. This involves a search for an intelligible principle of composition. (shrink)

Many professionals, mainly scientists have told me that a divine being is not necessary to explain why there is something rather than nothing. Theology and even metaphysics are redundant disciplines, they say. To me to reject a discipline a priori is irrational, whereas the methodology of science itself is basically rational. Why do Newton's equations say time is symmetrical, Einstein's relativity and quantum mechanics say time is an illusion and now Smolin says time is reborn - the present moment is (...) a fundamental aspect of reality. Why has matter been the carrier of reality over centuries, then matter dissolves away becoming an ephemeral quantum activity and now information is the carrier of reality? The laws of physics were presumed to be eternal, now Smolin says they are evolving like in biology - natural selection. Why do cosmologists like Brian Greene and Leonard Susskind postulate that there are nearly infinite number of replicas of each and every one of us - doppelgangers - in an infinite number of universes when the gut feeling of each and every one of us that we are unique in this universe? For Newton, gravity was an instantaneous attraction between two masses, for Einstein it was an inherent potential even with a single mass. For Einstein, gravity acts at the speed of light. Plato says that what is observed is phenomena. Reality resides in Platonic Forms. Descartes says that knowledge is acquired through perception and deduction. No reality without the mind. Kant synthesized rationalism and empiricism. Knowledge can be derived without empirical observation. Free will touches almost everything that human beings value. But many scientists postulate that free will is an illusion. Christian theology posits that God created the universe out of nothing. Cosmologists also now say the same thing, but the definition of 'nothing' is disputed. Christian theology once postulated that there is no salvation outside the Church. Now it is not so. Why these confusions? Why these contradictions? On the present methodology of acquisition of knowledge, answers may never be possible. The Theory of Everything (TOE) is more a distant dream than reaching for the stars. However, the discipline of Zygology which is introduced into the academia, a rational explanation why this is not possible has been postulated. Knowledge is holistic - a seamless web runs through all disciplines. Necessity of a new epistemology of reality and existence is inevitable....Zygology may have the answers!". (shrink)

Another Essay on Chaucer's Criseyde might seem as redundant as another essay on Hamlet, whose bibliographer discouragingly warns us to expect a new pronouncement every week or so. Perhaps Criseyde would be almost as popular a subject as Hamlet if readers of Chaucer were as numerous as readers of Shakespeare. But she is popular enough already. Even now there is not much hope of discovering anything in Chaucer's poem that has not been noted by someone in the long line of (...) scholars to whom this essay is much indebted, though it may disagree with their conclusions. I believe, however, that the assembling of details and the resultant understanding of the infidelity here presented are not altogether derivative. If the argument is a poor thing, it is at least my own. jQuery.click { event.preventDefault(); }). (shrink)

In nonstandard measure theory the standard part map is very useful to represent standard measures by Loeb measures. We give here a different method of representing measures using the concept of a σ -homomorphism. As an application a measure extension theorem is derived. Finally a nonstandard proof of a result of Pták is given showing that his assumption of nonmeasurable cardinality is redundant.

Nelson Goodman (1906–1998) is one of the leading American philosophers of the twentieth century. His well-known book Languages of Art is considered a major contribution to analytical aesthetics. While his views on particular issues have often been criticized, on the whole, he is considered to be a leading figure in twentieth-century aesthetics. Contrary to such a stance, I intend to argue that Goodman’s overall contribution to aesthetics is not as outstanding and valuable as is often maintained. Rather, I will try (...) to show that his aesthetic views are grounded on a distorted representation of the earlier aesthetic tradition, without which they lose the novelty and originality ascribed to them. Once that representation is corrected, some of Goodman’s proposals turn out to be derivative and redundant. Additionally, where they do actually diverge from the earlier tradition and might stake a claim to originality, they turn out to be simply erroneous and misconceived, and sometimes even logically flawed. To conclude, Goodman’s lofty reputation as an aesthetician certainly requires major revision. (shrink)

Reactive oxygen species (ROS) are known as toxic metabolic products in plants and other aerobic organisms. An elaborate and highly redundant plant ROS network, composed of antioxidant enzymes, antioxidants and ROS-producing enzymes, is responsible for maintaining ROS levels under tight control. This allows ROS to serve as signaling molecules that coordinate an astonishing range of diverse plant processes. The specificity of the biological response to ROS depends on the chemical identity of ROS, intensity of the signal, sites of production, plant (...) developmental stage, previous stresses encountered and interactions with other signaling molecules such as nitric oxide, lipid messengers and plant hormones. Although many components of the ROS signaling network have recently been identified, the challenge remains to understand how ROS-derived signals are integrated to eventually regulate such biological processes as plant growth, development, stress adaptation and programmed cell death. (shrink)

Abstractc‐Rel is a proto‐oncogene first identified as the cellular counterpart of the v‐Rel oncogene derived from the avian reticuloendotheliosis retrovirus (REV‐T). It was subsequently discovered that c‐Rel belongs to the NF‐κB/Rel transcription factor family whose members share a common DNA recognition motif and similar signaling pathways. Despite the similarities, however, each NF‐κB/Rel member possesses unique properties with regard to tissue expression pattern, response to receptor signals and target gene specificity. These differences are fairly evident from the non‐redundant phenotypes exhibited by (...) individual NF‐κB/Rel knockout mice. Hence the work described in this review will compare and contrast the various physiological functions of c‐Rel to those of other NF‐κB members, particularly with respect to the regulation of proliferation, survival and effector functions in multiple hematopoietic and immunological cell types. The study of c‐Rel knockout mice in several disease models will also be discussed as they reveal an important role for c‐Rel in response to allergens, auto‐antigens, allo‐antigens and pathogenic infection. BioEssays 25:767–780, 2003. © 2003 Wiley Periodicals, Inc. (shrink)

The accurate annotation of an unknown protein sequence depends on extant data of template sequences. This could be empirical or sets of reference sequences, and provides an exhaustive pool of probable functions. Individual methods of predicting dominant function possess shortcomings such as varying degrees of inter-sequence redundancy, arbitrary domain inclusion thresholds, heterogeneous parameterization protocols, and ill-conditioned input channels. Here, I present a rigorous theoretical derivation of various steps of a generic algorithm that integrates and utilizes several statistical methods to (...) predict the dominant function in unknown protein sequences. The accompanying mathematical proofs, interval definitions, analysis, and numerical computations presented are meant to offer insights not only into the specificity and accuracy of predictions, but also provide details of the operatic mechanisms involved in the integration and its ensuing rigor. The algorithm uses numerically modified raw hidden markov model scores of well defined sets of training sequences and clusters them on the basis of known function. The results are then fed into an artificial neural network, the predictions of which can be refined using the available data. This pipeline is trained recursively and can be used to discern the dominant principal function, and thereby, annotate an unknown protein sequence. Whilst, the approach is complex, the specificity of the final predictions can benefit laboratory workers design their experiments with greater confidence. -/- . (shrink)

In this article I examine several related views expressed by Robin Hendry concerning molecular structure, emergence and chemical bonding. There is a long-standing problem in the philosophy of chemistry arising from the fact that molecular structure cannot be strictly derived from quantum mechanics. Two or more compounds which share a molecular formula, but which differ with respect to their structures, have identical Hamiltonian operators within the quantum mechanical formalism. As a consequence, the properties of all such isomers yield precisely the (...) same calculated quantities such as their energies, dipole moments etc. The only means through which the difference between the isomers can be recovered is to build their structures into the quantum mechanical calculations, something that is carried out by the application of the Born-Oppenheimer approximation. Consequently, it has been argued by many authors that molecular structure is written in ‘by hand’ rather than derived. Robin Hendry is one such author, but he goes a great deal further by proposing that this situation implies the existence of emergence and downward causation. In the current article I argue that there are alternative explanations which render emergence and downward causation redundant. Such an alternative lies in the notion of quantum decoherence and the appeal to work in the foundations of physics, which posits that the various isomers exist as a superposition until their wavefunctions are collapsed either by observation or by interacting with their environment.Hendry also alludes to a debate among chemists as to whether chemical bonds are real or not, in the sense of directional connections between two or more nuclei in any given molecule. I reject this view and propose that the structural and energetic views of chemical bonding, that have been discussed by some philosophers of chemistry including Hendry, do not refer to any essential ontological differences. I agree that chemists view bonding in a more realistic fashion and may consider bonds to be in some senses real, while physicists may consider bonding in more abstract energetic terms. However, I do not believe that such differences in scientific practice and attitudes should be considered to offer a window as to the ontological status of bonding or whether bonding is real. Finally, I discuss the kinetic energy school of chemical bonding which would seem to challenge any notion of bonds as directional entities, since bonding is no longer regarded as being primarily due to the build-up of electron density between nuclei. (shrink)

With reference to Polish logico-philosophical tradition two formal theories of language syntax have been sketched and then compared with each other. The first theory is based on the assumption that the basic linguistic stratum is constituted by object-tokens (concrete objects perceived through the senses) and that the types of such objects (ideal objects) are derivative constructs. The other is founded on an opposite philosophical orientation. The two theories are equivalent. The main conclusion is that in syntactic researches it is redundant (...) to postulate the existence of abstract linguistic entities. Earlier, in a slightly different form, the idea was presented in [27] and signalled in [26] and [25]. (shrink)

Starting from an abstract setting for the Lüders-von Neumann quantum measurement process and its interpretation as a probability conditionalization rule in a non-Boolean event structure, the author derived a certain generalization of operator algebras in a preceding paper. This is an order-unit space with some specific properties. It becomes a Jordan operator algebra under a certain set of additional conditions, but does not own a multiplication operation in the most general case. A major objective of the present paper is the (...) search for such examples of the structure mentioned above that do not stem from Jordan operator algebras; first natural candidates are matrix algebras over the octonions and other nonassociative rings. Therefore, the case when a nonassociative commutative multiplication exists is studied without assuming that it satisfies the Jordan condition. The characteristics of the resulting algebra are analyzed. This includes the uniqueness of the spectral resolution as well as a criterion for its existence, subalgebras that are Jordan algebras, associative subalgebras, and more different levels of compatibility than occurring in standard quantum mechanics. However, the paper cannot provide the desired example, but contribute to the search by the identification of some typical differences between the potential examples and the Jordan operator algebras and by negative results concerning some first natural candidates. The possibility that no such example exists cannot be ruled out. However, this would result in an unexpected new characterization of Jordan operator algebras, which would have a significant impact on quantum axiomatics since some customary axioms (e.g., power-associativity or the sum postulate for observables) might turn out to be redundant then. (shrink)

It is shown that Tarski’s set of ten axioms for the calculus of relations is independent in the sense that no axiom can be derived from the remaining axioms. It is also shown that by modifying one of Tarski’s axioms slightly, and in fact by replacing the right-hand distributive law for relative multiplication with its left-hand version, we arrive at an equivalent set of axioms which is redundant in the sense that one of the axioms, namely the second involution law, (...) is derivable from the other axioms. The set of remaining axioms is independent. Finally, it is shown that if both the left-hand and right-hand distributive laws for relative multiplication are included in the set of axioms, then two of Tarski’s other axioms become redundant, namely the second involution law and the distributive law for converse. The set of remaining axioms is independent and equivalent to Tarski’s axiom system. (shrink)

Informational theories of semantic content have been recently gaining prominence in the debate on the notion of mental representation. In this paper we examine new-wave informational theories which have a special focus on cognitive science. In particular, we argue that these theories face four important difficulties: they do not fully solve the problem of error, fall prey to the wrong distality attribution problem, have serious difficulties accounting for ambiguous and redundant representations and fail to deliver a metasemantic theory of representation. (...) Furthermore, we argue that these difficulties derive from their exclusive reliance on the notion of information, so we suggest that pure informational accounts should be complemented with functional approaches. (shrink)

This paper argues that exploitation is a central and non-redundant concept in a Marxian understanding of capitalism. This finding runs counter to John Roemer’s conclusion in his critical reexamination of exploitation. For a static setting with perfectly competitive markets, Roemer shows that exploitation is a property of agents which derives from unequal wealth endowments, that is, from differential ownership of productive assets, not a social relation between capitalists and workers. Further, he shows that DOPA suffices in this setting to generate (...) core phenomena in Marxian theory-accumulation, domination, alienation, and inequality-with no reference to an independent notion of exploitation. Roemer concludes that DOPA is the central analytical category in Marxian theory, and exploitation a redundant, indeed incorrect, concept therein. A direct implication is that distributive justice should be Marxism’s central ethical concern. The basis for Roemer’s sweeping conclusion is that his model is general, incorporating no special institutional assumptions and abstracting from any impediments to market equilibria. That is, his conclusion rests on an ahistorical, timeless economic model. (shrink)

Nowadays, depression is the world’s major health concern and economic burden worldwide. However, due to the limitations of current methods for depression diagnosis, a pervasive and objective approach is essential. In the present study, a psychophysiological database, containing 213 subjects, was constructed. The electroencephalogram signals of all participants under resting state and sound stimulation were collected using a pervasive prefrontal-lobe three-electrode EEG system at Fp1, Fp2, and Fpz electrode sites. After denoising using the Finite Impulse Response filter combining the Kalman (...) derivation formula, Discrete Wavelet Transformation, and an Adaptive Predictor Filter, a total of 270 linear and nonlinear features were extracted. Then, the minimal-redundancy-maximal-relevance feature selection technique reduced the dimensionality of the feature space. Four classification methods distinguished the depressed participants from normal controls. The classifiers’ performances were evaluated using 10-fold cross-validation. The results showed thatK-Nearest Neighbor had the highest accuracy of 79.27%. The result also suggested that the absolute power of the theta wave might be a valid characteristic for discriminating depression. This study proves the feasibility of a pervasive three-electrode EEG acquisition system for depression diagnosis. (shrink)

Introduction. The intensity of the visual media influence in the format of films and TV series on cultural life, reaching its peak in the era of streaming television, poses the task for the humanities to study the visual type of thinking, visual consciousness, which is different from the classical visualization of verbal thinking in the plastic arts. If a researcher intends to derive from a film or TV series, a value system, a cognitive strategy that is relevant for its time, (...) the visual environment may turn out to be no less eloquent for him than the dramatic action taking place in it. The character and quality of this environment are made up of many sensory elements: light, color, movement and its choreography, sound, space, subject referents, etc. Taken together, they represent not so much an articulation of the author’s thought, but a way of specifically visually thinking through this thought. The complex structure of visual-mental environments requires extensive and systematic research work. In this article we take one of the most obvious substantive aspects of the visible: the vestimental strategy of the film. The purpose of the article is to identify patterns marked by subject (vestimentary) characteristics that are redundant in relation to the dramatic action by comparing the visual environments of films from different decades of the 20th century; using the code of cultural universals that assign the function of sociocultural and ethical regulation to the concept of “clothing” [1; 3; 5; 10; 15], to identify the meaning of these patterns in the context of the ethical thinking of the era. Methods. During the study, the authors use general scientific methods of analysis and synthesis; the method of phenomenological reduction, which makes it possible to record the sensory qualities of object-spatial screen environments; a hermeneutical method that allows, on the basis of visible sign structures, to identify the essential intentions of a visual image. In view of the task, it turned out to be necessary to involve some concepts of narratology (in particular, the concept of focalization) and methods of corpus analysis adopted in linguistics. The scientific novelty lies in the fact that we approach the visual source from a philosophical and cultural perspective, considering the visual environment of the film as a form and method of actual sociocultural or philosophical thinking, which has specific (visual) tools. This approach allows us to draw conclusions based not only on individual films, but also on large source databases. Results. During the analysis, the authors applied the tools of modern visual studies and the conceptual basis of socio-philosophical ethics to cinematic texts of the 20th century. This made it possible to discover visual patterns common to films of some decades of the 20th century, namely: the 1930s, 1950s, 1990s, and connect them with the ethical issues of time. Conclusions. Analysis of source databases that include cinematic texts can be carried out through a systematic analysis of the visual environments presented on the screen. At the same time, dominant visual patterns characteristic of a particular era can be identified and described. Such a dominant determines the emphasis in the figurative whole and reveals important aspects of philosophical and cultural thought relevant for its time, including ethical thought. (shrink)

Several philosophers, including most prominently Theodore Benditt, have recently urged that the discourse of rights, widely thought to be a central, if not foundational feature of moral and political thought, is in reality a mere “redundant” appendage---a discourse that holds no distinctive place in moral or legal reasoning owing to the fact that it is thoroughly derivative because collapsible into other forms of moral or legal language. In this paper I attempt to (1) flesh out this “Redundancy” Thesis (RT) (...) and (2) identify and criticize at least two general arguments that might be thought to give rise to it: the claims that rights reduce (respectively) to duties (the Correlativity Thesis) or to permissions (the Permissibility Thesis). I try to show how and why these arguments fail and why they do not therefore support RT. (shrink)

In noise we hear the possibility of a signal, indeed different signals, and in the multiplicity of signals we hear noise. With variation and selection comes dynamic evolution, a contingent state, one that could be otherwise. The term ‘polemogenous’ (from the French, polémogène) means that which generates polemics. And polemics are creative. If everyone, every system, were to reason in the same way, there would be silence. Every remark would be redundant, having no informational value. Thus noise is not bad. (...) The essence of finance economics, like all that is social in nature, is a forming of meaning. Whatever cannot be formed meaningfully is not available to the system. This unavailability, as ‘noise’, is the dynamic difference (noise/information) that scintillates the system. Information, like morality, is polemogenous – it stirs contention. Without noise and the possibility of its conversion to information there would be no opportunities to exploit. This paper applies a systems theoretical understanding of observation to conceive of finance economics as the economy’s means of observing its noise and capitalizing on that polemic. Niklas Luhmann’s method is utilized to explicate some ideas on noise by financial economist Fischer Black, who suggests the incomprehensible is computable. This is finance. The fact that logical grounds, absolute deductions, and clear calculations are claimed to be rare in finance is no barrier to understanding it. Rather, this polyphonic and polemogenous information-selection is the ‘ground’ of finance, not as totalizing logic, but as different difference-production for the sake of deriving economic opportunity. (shrink)

In this article I contrast in two ways those conceptions of semantic theory deriving from Richard Montague's Intensional Logic (IL) and later developments with conceptions that stick pretty closely to a far weaker semantic apparatus for human first languages. IL is a higher-order language incorporating the simple theory of types. As such, it endows predicates with a reference. Its intensional features yield a conception of propositional identity (namely necessary equivalence) that has seemed to many to be too coarse to be (...) acceptable. In the most usual expositions, it takes the object of linguistic explication to be the sentence in a context, as in Kaplan, 1977. This last has led to recent speculations about 'shifted' contexts. IL may be contrasted with a more linguistically (representationally) bound conception of propositions and interpretation of their predicational and functional parts, and with the explication, not of sentences in contexts, but of potential utterances, relative to the antecedent referential intentions of their speakers. We may then advance, as an empirical hypothesis about all human languages, that contexts never shift, and propose that apparent counterexamples stem from the misconstrual of linguistically coded anaphoric relations, relations that are wanted independently anyway. Donald Davidson's posthumous volume Truth and Predication mounts a sustained criticism of the notion of predicate reference. This criticism is not decisive. However, it may put the ball in the other court, insofar as it asks for a justification of what IL takes as given. Elaborations of IL using structured propositions, recently defended in King, 2007, recognize the problem of predicate reference, and the correlative issue of the 'unity of the proposition'; but I do not see that they can do better than bite the bullet already bitten in IL. I agree with Frege's insight that full justification of predicate reference pushes the boundaries of natural language, and to that extent may not be found within the semantic (as opposed to general scientific) enterprise. (shrink)

AbstractIn many cultures, interactions between humans and plants are rooted in what is called “relational values”—values that derive from relationships and entail reciprocity. In Mexico, biocultural diversity is mirrored in the knowledge and use of some 6500 plant species and the domestication of over 250 Mesoamerican native crop species. This research explores how different sets of values are attributed to plants and how these influence management strategies to maintain plant resources in wild and anthropogenic environments. We ran workshops in two (...) communities in a highly biodiverse region in western Mexico, to ascertain the values and management activities related to important plant resources. The relationship between values attributed to plants and management activities was examined through redundancy analysis. A total of 180 plant resources were mentioned during the workshops, with a broad spectrum of values attributed to them, including material, non-material, and regulatory dimensions. We divided plant management strategies into three general categories of increasing intensity and complexity. We found that participants in the Indigenous community value and manage more wild plant resources than people in the non-Indigenous community. We also identified relationships between plant resource values and the type of management performed; for example, more intensive forms of management, such as sowing seeds, were used for seasonal plants that had a food value. By valuing and managing different sets of plant resources from forest, agricultural plots, and home gardens, people enabled multi-functional landscapes to form, illustrating a key feature of relational values in agroecosystems, which promotes both conservation and domestication of plants. (shrink)

The paper offers a matrix-based logic (relevant matrix quantum physics) for propositions which seems suitable as an underlying logic for empirical sciences and especially for quantum physics. This logic is motivated by two criteria which serve to clean derivations of classical logic from superfluous redundancies and uninformative complexities. It distinguishes those valid derivations (inferences) of classical logic which contain superfluous redundancies and complexities and are in this sense from those which are or in the sense of allowing only the most (...) informative consequences in the derivations. The latter derivations are strictly valid in RMQ, whereas the former are only materially valid. RMQ is a decidable matrix calculus which possesses a semantics and has the finite model property. It is shown in the paper how RMQ by its strictly valid derivations can avoid the difficulties with commensurability, distributivity, and Bell's inequalities when it is applied to quantum physics. (shrink)

Prawitz observed that Russell’s paradox in naive set theory yields a derivation of absurdity whose reduction sequence loops. Building on this observation, and based on numerous examples, Tennant claimed that this looping feature, or more generally, the fact that derivations of absurdity do not normalize, is characteristic of the paradoxes. Striking results by Ekman show that looping reduction sequences are already obtained in minimal propositional logic, when certain reduction steps, which are prima facie plausible, are considered in addition to the (...) standard ones. This shows that the notion of reduction is in need of clarification. Referring to the notion of identity of proofs in general proof theory, we argue that reduction steps should not merely remove redundancies, but must respect the identity of proofs. Consequentially, we propose to modify Tennant’s paradoxicality test by basing it on this refined notion of reduction. (shrink)

Here I reexamine Duhem's question of the continuity between medieval dynamics and early modern conservation theories. I concentrate on the heavens. For Aristotle, the motions of the heavens are eternally constant (and thus mathematizable) because an eternally constant divine Reason is their mover. Duhem thought that impetus and conservation theories, by extending sublunar mechanics to the heavens, made a divine renewer of motion redundant. By contrast, I show how Descartes derives his law of conservation by extending Aristotelian celestial dynamics to (...) the earth. Descartes argues that motion is intrinsically linear, not circular. But he agrees that motion is mathematically intelligible only where divine Reason moves bodies in a constant and eternal motion. Descartes strips bodies of active powers, leaving God as the only natural mover; thus both celestial and sublunar motions are constant, and uniformly mathematizable. The law of conservation of the total quantity of motion is an attempt to harmonize the constancy derived a priori with the phenomenal inconstancy of sublunar motions. (shrink)

In this paper, I claim that extant empirical data do not support a radically embodied understanding of the mind but, instead, suggest (along with a variety of other results) a massively representational view. According to this massively representational view, the brain is rife with representations that possess overlapping and redundant content, and many of these represent other mental representations or derive their content from them. Moreover, many behavioral phenomena associated with attention and consciousness are best explained by the coordinated activity (...) of units with redundant content. I finish by arguing that this massively representational picture challenges the reliability of a priori theorizing about consciousness. (shrink)

Self-plagiarism, textual recycling and redundancy seemed to be controversial and unethical; however some questions about its definition are still open. The objective in this paper presented study was to use bibliometric analysis to synthesise and visualize the research literature production and derive a typology of self-plagiarism research. Five topics emerged: Self-plagiarism, Institutional self-plagiarism, Self-plagiarism and ICT, Self-plagiarism in academic writing, Self-plagiarism in science. The state of the art topics seem to be “social medium”, “virtual world”, “face book”, “sociomateriality”, “knowledge (...) sharing”, “open access”, “institutional repository”, “retraction” and “responsible conduct”. (shrink)

The principle that values cannot be derived from facts, though first explicitly formulated by David Hume, does not seem to be consistent with Hume's assertions that value becomes intelligible through experience, and that the will is determined by pleasure and pain. Moral reasoning involving pleasures and pains in the context of the peculiarities of human existence in society must be more complicated than reasoning involving ordinary, i.e. natural, pleasures and pains. Nevertheless, all pains and pleasures must be sensations. Hence Hume's (...) moral philosophy becomes an example of an ethics in which facts, namely pleasures and pains, are related to values. However, many philosophers have argued that values must have a transcendental origin. Ludwig Wittgenstein's arguments concerning ethics and aesthetics constitute an interesting contemporary example of such transcendental conceptions of value. For Wittgenstein, the voice of conscience is God; the will can affect the subject at the limits of the world, and not things in the world; therefore, ethics must be transcendental (not expressible in the way facts in the world are). It seems that this attitude in ethics and aesthetics rules out any empirical discourse on values, which can hardly be called totally fruitless. An example of such discourse may even be one describable in Wittgensteinian terms: values can be defined through facts as modifications in the limits of the world, and through facts as things "in the world". If such descriptions are possible and expressible, a reference to a transcendental realm to account for the existence of conscience would become redundant. (shrink)

In this article I examine several related views expressed by Robin Hendry concerning molecular structure, emergence and chemical bonding. There is a long-standing problem in the philosophy of chemistry arising from the fact that molecular structure cannot be strictly derived from quantum mechanics. Two or more compounds which share a molecular formula, but which differ with respect to their structures, have identical Hamiltonian operators within the quantum mechanical formalism. As a consequence, the properties of all such isomers yield precisely the (...) same calculated quantities such as their energies, dipole moments etc. The only means through which the difference between the isomers can be recovered is to build their structures into the quantum mechanical calculations, something that is carried out by the application of the Born-Oppenheimer approximation. Consequently, it has been argued by many authors that molecular structure is written in ‘by hand’ rather than derived. Robin Hendry is one such author, but he goes a great deal further by proposing that this situation implies the existence of emergence and downward causation. In the current article I argue that there are alternative explanations which render emergence and downward causation redundant. Such an alternative lies in the notion of quantum decoherence and the appeal to work in the foundations of physics, which posits that the various isomers exist as a superposition until their wavefunctions are collapsed either by observation or by interacting with their environment. Hendry also alludes to a debate among chemists as to whether chemical bonds are real or not, in the sense of directional connections between two or more nuclei in any given molecule. I reject this view and propose that the structural and energetic views of chemical bonding, that have been discussed by some philosophers of chemistry including Hendry, do not refer to any essential ontological differences. I agree that chemists view bonding in a more realistic fashion and may consider bonds to be in some senses real, while physicists may consider bonding in more abstract energetic terms. However, I do not believe that such differences in scientific practice and attitudes should be considered to offer a window as to the ontological status of bonding or whether bonding is real. Finally, I discuss the kinetic energy school of chemical bonding which would seem to challenge any notion of bonds as directional entities, since bonding is no longer regarded as being primarily due to the build-up of electron density between nuclei. (shrink)