Stocks and flows are building blocks of dynamic systems: Stocks change through inflows and outflows, such as our bank balance changing with withdrawals and deposits, or atmospheric CO2 with absorptions and emissions. However, people make systematic errors when trying to infer the behavior of dynamic systems, termed SF failure, whose cognitive explanations are yet unknown. We argue that SF failure appears when people focus on specific system elements, rather than on the system structure and gestalt. Using a standard (...) SF task, SF failure decreased by a global as opposed to local task format; individual global as opposed to local processing styles; and global as opposed to local perceptual priming. These results converge toward local processing as an explanation for SF failure. We discuss theoretical and practical implications on the connections between the scope of attention and understanding of dynamic systems. (shrink)

Most theories of binding in most syntactic frameworks assume that the same notion of surface obliqueness that identi es the subject of a clause is also used for obliqueness conditions on re exive binding For instance in GB Chomsky binding theory is standardly de ned on S structure so that in Nancy can bind herself due to the c commanding con guration that also makes Nancy the subject of the sentence..

This paper addresses the issues related to designing and estimating the strength of solid-alloy elements in the deforming broaches of significant diameter (exceeding 150 mm) for the developed process of discrete broaching. The tool limit condition was assessed based on two strength criteria: the specific potential energy of shape change and the maximum tangent stresses. Numerical modeling using the finite element method has made it possible to derive the distribution of equivalent stresses in the tool elements and the (...) contact stresses at the surface of the contact between a solid-alloy insert and the body, which enabled the analysis of tool strength under loading. The simulation was performed under a single normal load, which ensured the versatility of the calculation for any contact pressure values. We have derived formulae to calculate the acceptable contact pressure depending on unit load. The effect of the insert protrusion height over the body on the strength of tool elements has been established. We have derived engineering dependences that determine the required magnitude of insert protrusion over the body depending on the ultimate load. An example of calculating the strength of a prefabricated deforming element in the machining of a sleeve made from gray modified cast iron of hardness HB230 has been considered. Our calculations have shown that the deforming element designed for the new technological process corresponds to the conditions of strength, provided the ratio h1/h=0.15 is maintained (where h1 is the insert height above the body, h is the insert height). The results obtained could be used in engineering calculations when designing the prefabricated tool for discrete deformation, as well as to assess the strength of prefabricated tools, such as cutters, core drills, reamers, when refining external loads. (shrink)

The managerial ethics literature is used as a base for the inclusion of Ethical Attribution, as an element in the consumer's decision process. A situational model of ethical consideration in consumer behavior is proposed and examined for Personal vs. Vicarious effects. Using a path analytic approach, unique structures are reported for Personal and Vicarious situations in the evaluation of a seller's unethical behavior. An attributional paradigm is suggested to explain the results.

The contrast between the two approaches alluded to in the title has gained a certain prominence in our own day. With the knowledge of hindsight it will be of interest therefore to study its incidence in an earlier period, in the writings of Whewell and Mill, Which may thus yield added significance for a later generation. Right at the start there is a difficulty. Not all inductivists agree on their principles, or their interpretation of the logic of scientific reasoning, and (...) the same is true of deductivism, and the differences can therefore be discussed only in connection with individual writers. When this is done, we do find moreover some considerable variations in the treatment of their respective doctrines by the members of each of our two schools. To define these differences, we need a finer structure of elements of classification, indicative of criteria for the acceptance of scientific hypotheses. (shrink)

This article aims to contribute to the literature on conceptual change by engaging in direct theoretical and empirical comparison of contrasting views. We take up the question of whether naïve physical ideas are coherent or fragmented, building specifically on recent work supporting claims of coherence with respect to the concept of force by Ioannides and Vosniadou [Ioannides, C., & Vosniadou, C. (2002). The changing meanings of force. Cognitive Science Quarterly 2, 5–61]. We first engage in a theoretical inquiry on the (...) nature of coherence and fragmentation, concluding that these terms are not well‐defined, and proposing a set of issues that may be better specified. The issues have to do with contextuality, which concerns the range of contexts in which a concept (meaning, model, theory) applies, and relational structure, which is how elements of a concept (meaning, model, or theory) relate to one another. We further propose an enhanced theoretical and empirical accountability for what and how much one needs to say in order to have specified a concept. Vague specification of the meaning of a concept can lead to many kinds of difficulties.Empirically, we conducted two studies. A study patterned closely on Ioannides and Vosniadou's work (which we call a quasi‐replication) failed to confirm their operationalizations of “coherent.” An extension study, based on a more encompassing specification of the concept of force, showed three kinds of results: (1) Subjects attend to more features than mentioned by Ioannides and Vosniadou, and they changed answers systematically based on these features; (2)We found substantial differences in the way subjects thought about the new contexts we asked about, which undermined claims for homogeneity within even the category of subjects (having one particular meaning associated with “force”) that best survived our quasi‐replication; (3) We found much reasoning of subjects about forces that cannot be accounted for by the meanings specified by Ioannides and Vosniadou. All in all, we argue that, with a greater attention to contextuality and with an appropriately broad specification of the meaning of a concept like force, Ioannides and Vosniadou's claims to have demonstrated coherence seem strongly undermined. Students' ideas are not random and chaotic; but neither are they simply described and strongly systematic. (shrink)

In the present paper we prove that the poset of all extensions of the logic defined by a class of matrices whose sets of distinguished values are equationally definable by their algebra reducts is the retract, under a Galois connection, of the poset of all subprevarieties of the prevariety generated by the class of the algebra reducts of the matrices involved. We apply this general result to the problem of finding and studying all extensions of the logic of paradox. In (...) order to solve this problem, we first study the structure of prevarieties of Kleene lattices. Then, we show that the poset of extensions of the logic of paradox forms a four-element chain, all the extensions being finitely many-valued and finitely-axiomatizable logics. There are just two proper consistent extensions of the logic of paradox. The first is the classical logic that is relatively axiomatized by the Modus ponens rule for the material implication. The second extension, being intermediate between the logic of paradox and the classical logic, is the one relatively axiomatized by the Ex Contradictione Quodlibet rule. (shrink)

Background:The ability to save the life of an extremely premature baby has increased substantially over the last decade. This survival, however, can be associated with unfavourable outcomes for both baby and family. Questions are now being asked about quality of life for survivors of extreme prematurity. Quality of life is rightly deemed to be an important consideration in high technology neonatal care; yet, it is notoriously difficult to determine or predict. How does one define and operationalise what is considered to (...) be in the best interest of a surviving extremely premature baby, especially when the full extent of the outcomes might not be known for several years?Research question:The research investigates the caregiving dilemmas often faced by neonatal nurses when caring for extremely premature babies. This article explores the issues arising for neonatal nurses when they considered the philosophical and ethical questions about quality of life in babies ≤24 weeks gestation.Participants:Data were collected via a questionnaire to Australian neonatal nurses and semi-structured interviews with 24 neonatal nurses in New South Wales, Australia.Ethical considerations:Ethical processes and procedures have been adhered to by the researchers.Findings:A qualitative approach was used to analyse the data. The theme ‘difficult choices’ was generated which comprised three sub-themes: ‘damaged through survival’, ‘the importance of the brain’ and ‘families are important’. The results show that neonatal nurses believed that quality of life was an important consideration; yet they experienced significant inner conflict and uncertainty when asked to define or suggest specific elements of quality of life, or to suggest how it might be determined. It was even more difficult for the nurses to say when an extremely premature baby’s life possessed quality. Their previous clinical and personal experiences led the nurses to believe that the quality of the family’s life was important, and possibly more so than the quality of life of the surviving baby. This finding contrasts markedly with much of the existing literature in this field.Conclusion:Quality of life for extremely premature babies was an important consideration for neonatal nurses; however, they experienced difficulty deciding how to operationalise such considerations in their everyday clinical practice. (shrink)

Un enjeu majeur pour les recherches actuelles dans les sciences de la vision consiste à mettre au point une approche dépendante de l’observateur – une science des apparences visuelles située au-delà de leur véridicité. L’espace dont nous faisons l’expérience subjective est en réalité hautement « illusoire», et les éléments de base du champ visuel sont des structures qualitatives, contextuelles et relationnelles, et non des indices métriques et dépendants du stimulus. Sur la base de nombreux résultats disponibles dans la littérature traitant (...) de la manière dont fonctionnent les divers constituants de l’espace (formes, surfaces, etc.), l’article décrit les éléments qualitatifs de base d’un tel espace et pose la question de la « géométrie» des apparences visuelles. Il formule enfin un ensemble de propositions pour d’éventuelles recherches poursuivant l’examen de l’espace visuel d’un point de vue expérimental. (shrink)

This research aims to show grammatical relations between the elements of the sentence based around the syntactic connection. The phenomenon of syntactic connection is one of the basic concepts for al-Jurjānī’s theory of nazm (construction). This view, which makes more understanding the structure of Arabic sentence, is studied in the light of the ideas of classic and modernists linguists. This attempt to facilitate Arabic grammar has continued routinely from relationships between grammar and meaning. The integration of grammar, which (...) consists of words, is an important property for native speakers and others. This field is open to new developments considering the successive developments in the field of linguistics. It is important to develop the principles that will help in understanding the grammatical structure of a language in which communication pathways are growing. Reinterpretation of prominent approaches appeared in classical sources and updating the concepts that explain the basic structures of language are needed to increase the effectiveness of Arabic.Summary: The linguists, who accept the language structures as a system of expressing thoughts, search out the relationship between meaning and grammar. The rules of grammar, which maintain its importance from the past to the present is one of the basic language areas. In the looking at the researches in the field of Arabic language, it is seen that the grammatical structures of this language is much emphasized. In this context, the grammatical markers theory, which is trying to explain the connection between the sentence elements in the light of different scientific disciplines, such as philosophy and logic is a theory, which the linguists put to explain the Arabic grammar. The grammatical discussions around the grammatical markers have continued for a long time. ‘Abd al-Qāhir al-Jurjānī (d. 471/1078) is one of the most prominent Arabic grammarians whose opinions are widely mentioned in this field. Al-Jurjānī, who found that the discipline of grammar area was limited, established a new method in language studying. In this context, the linguistic researches continue around the views of al-Jurjānī’s theory of construction. The term of construction, which describes the relationship between meaning and grammar, means composition and arrangement. The current linguistic studies have ensured the magnificence and accuracy of this theory. According to this theory, grammar meaning is arising from the choice of word and grammatical elements. The relation between words in the sentence is explained as a construction. According to al-Jurjānī, grammar is the result of various language skills beyond the distinction of truth and error. This comprehensive language understanding, which evaluates the grammar from a different point of view, has started as of Sībawayhi (d. 180/796). The Arabic linguistic studies from the early period are characterized by taking care of both form and meaning, in addition to semantic.Term of the syntactic connection is one of the basic concepts, which al-Jurjānī focuses on while explaining views on grammar. He gives much importance to the method of linking words and to the way they join each other to form sentences. The syntactic connection is an interaction between words and grammatical meanings. In this process, the mechanism of affixation and association occur between the elements of sentence. The term affixation refers to direct connection relations of the elements of sentence, while the term association refers to indirect relations. This term used to describe the grammar structures, is also closely related with the meanings of the words. The basic sentence in classical Arabic consists of the musnad and the musnad ilayhi. In the Arabic language, besides the basic elements of the sentence, other units are important as well. These units work together to express a central idea that may be further developed or refined by other elements. The factor, which determines the function of a word in the sentence, is the place of word. In this context, the linguistic studies carried out within the syntactic connection will make an important contribution to language teaching.The other thing in the context of the syntactic connection is the terms of “deep and surface structure”, which are the basic concepts of the transformational grammar theory developed by Chomsky. While the deep structure consists of simple sentence structures, the surface structure is composed of sentences. According to the transformational grammar theory, the deep structure is an important factor for determining the meaning. They draw attention to the mental side of the language. It is because the language is a phenomenon, which produces unlimited sentences with limited elements. In this form, the language cannot be explained by a mechanical interpretation. The language should be examined in the light of human dynamics. The competence and performance are the cause of the emergence of deep and surface structure terms. The purpose of the word is effective in determining the structure of speech. The target language is to express unlimited meanings with limited words. Classical Arabic grammarians have introduced the idea of transformation to Arabic grammar – though they may not know this term. The Arabic grammarians have talked about preposing, postposing, deletion, increase and interpretation, which used and developed by Chomsky. Transformational grammar theory has produced a new paradigm in grammar. This theory is widely discussed among modern linguists. The term grammatical coherence is a new terminology used by the modern linguists for definition of sentence structure. This term, which shows evidence and relation between both things, is divided into two namely: verbal and semantic coherence. When the definitions of grammatical terms in the classical grammar sources, it is possible to see the emphasis of the grammatical coherences. This language understanding, which tries to substitute the inflection theory, aims to bring innovations in sentence analysis. The linguists point to the importance of this theory, which bring a new perspective in understanding the Arabic grammar. Tammām Ḥassān (1918-2011) attempts to link the grammatical coherences with ‘Abd al-Qāhir al-Jurjānī’s theory of semantic formation and its relationship to linguistic analysis. Tammām Ḥassān, likened to Sībawayhi, is regarded as one of the most important representatives of the innovative language understanding with his theory. According to him, the system of language, which provides a framework to shape man's thinking, is constituted by three subsystems: phonetics, vocabulary and grammar. Grammar may be defined as a system of word changing and other means of expressing relations of words in the sentence. In this context, the concepts of syntagmatic and paradigmatic structure are important to understand the general structure of languages. According to linguistics, grammar should study both paradigmatic and syntagmatic relations of sentences. The syntagmatic structure refers to the relationship between language units depending on the language system in the language. The relationship network between words that belong to the same semantic field is called paradigmatic structure. The paradigmatic structure provides similar criteria for all languages. Such approaches that introduced by linguistics, provides significant contributions to language learning. The modern linguistic studies have made the sentence a starting point to clarify the linguistic structures and relations to achieve the sound linguistic communication. A sentence is the largest unit in a language described by grammar. (shrink)

I want to differentiate between two very different ways of organizing pictorial elements at a very abstract level: -/- (2D) two-dimensionally: pictorial elements are organized and grouped according to their outline shape on the picture surface and (3D) three-dimensionally: pictorial elements are organized and grouped according to their position in the depicted space. -/- Suppose you need to depict seven identical spheres. On the most general level, there are two ways of doing this: you can arrange (...) the seven spheres in space and then choose a vantage point in this space from which you want to depict them. Or you can arrange seven circles (the outline shapes of the seven spheres) on the two-dimensional surface of the picture. The former method is an instance of three-dimensional pictorial organization, whereas the latter one is an instance of two-dimensional pictorial organization. (shrink)

The correct locus (or loci) of binding theory has been a matter of much discussion. Theories can be seen as varying along at least two dimensions. The rst is whether binding theory is con gurationally determined (that is, the theory exploits the geometry of a phrase marker, appealing to such purely structural notions as c-command and government) or whether the theory depends rather on examining the relations between items selected by a predicate (where by selection I am intending to cover (...) everything from semantic dependencies to syntactic subcategorization). The second is the level of grammar on which binding is de ned. Attempting to roughly equate levels across di erent theories, suggestions have included the semantics/lexical conceptual structure (Jackendo 1992), thematic structure (Jackendo 1972, Wilkins 1988), argument structure/D-structure/initial grammatical relations (Manning 1994, Belletti and Rizzi 1988, Perlmutter 1984), surface syntax/grammatical relations, logical form, linear order, pragmatics (Levinson 1991), and discourse (Iida 1992). The data is su ciently varied and complex that many theories end up as mixtures, variously employing a combination of elements along both dimensions (for instance, Chomsky (1986) relies purely on con gurational notions for the relationship between an anaphor and its antecedent, but uses concepts from selection in the de nition of the binding domain of an anaphor). LFG has always rejected a con gurational account of binding. For instancError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMape, Simpson (1991) argues that a con gurational theory of binding in Warlpiri cannot be maintained, among other reasons because nite clauses lack a VP.. (shrink)

The hemidesmosome is a complex junction containing many proteins. The keratin cytoskeleton attaches to its cytoplasmic plaque, while its transmembrane elements interact with components of the extracellular matrix. Hemidesmosome assembly involves recruitment of α6β4 integrin heterodimers, as well as cytoskeletal elements and cytoskeleton-associated proteins to the cell surface. In our cell culture models, these phenomena appear to be triggered by laminin-5 in the extracellular matrix. Cell interaction with laminin-5 apparently induces both phosphorylation and dephosphorylation of subunits of (...) α6β4 integrin. There is emerging evidence that such events are necessary for subsequent cytoskeleton anchorage to the hemidesmosome cytoplasmic plaque. Once assembled, the hemidesmosome plays an essential role in maintaining firm epithelial adhesion to the basement membrane, with hemidesmosome disruption being a hallmark of certain devastating blistering diseases. However, the hemidesmosome is more than just a stable anchor, as it may also be the site of signal transduction, mediated by its α6β4 integrin component. This review discusses our current knowledge of the structure and assembly of the hemidesmosome. BioEssays 20:488–494, 1998. © 1998 John Wiley & Sons, Inc. (shrink)

Intra-molecular connectivity (that is, chemical structure) does not emerge from computations based on fundamental quantum-mechanical principles. In order to compute molecular electronic energies (of C 3 H 4 hydrocarbons, for instance) quantum chemists must insert intra-molecular connectivity “by hand.” Some take this as an indication that chemistry cannot be reduced to physics: others consider it as evidence that quantum chemistry needs new logical foundations. Such discussions are generally synchronic rather than diachronic —that is, they neglect ‘historical’ aspects. However, systems (...) of interest to chemists generally are metastable . In many cases chemical systems of a given elemental composition may exist in any one of several different metastable states depending on the history of the system. Molecular structure generally depends on contingent historical circumstances of synthesis and separation, rather than solely or mainly on relative energies of alternative stable states, those energies in turn determined by relationships among components. Chemical structure is usually ‘kinetically-determined’ rather than ‘thermodynamically-determined.’ For instance, cyclical hydrocarbon ring-systems (as in cyclopropene) are produced only in special circumstances. Adequate theoretical treatments must take account of the persistent effects of such contingent historical events whenever they are relevant—as they generally are in chemistry. (shrink)

Sequence learning is fundamental to a wide range of cognitive functions. Explaining how sequences—and the relations between the elements they comprise—are learned is a fundamental challenge to cognitive science. However, although hundreds of articles addressing this question are published each year, the actual learning mechanisms involved in the learning of sequences are rarely investigated. We present three experiments that seek to examine these mechanisms during a typing task. Experiments 1 and 2 tested learning during typing single letters on each (...) trial. Experiment 3 tested for “chunking” of these letters into “words.” The results of these experiments were used to examine the mechanisms that could best account for them, with a focus on two particular proposals: statistical transitional probability learning and discriminative error-driven learning. Experiments 1 and 2 showed that error-driven learning was a better predictor of response latencies than either n-gram frequencies or transitional probabilities. No evidence for chunking was found in Experiment 3, probably due to interspersing visual cues with the motor response. In addition, learning occurred across a greater distance in Experiment 1 than Experiment 2, suggesting that the greater predictability that comes with increased structure leads to greater learnability. These results shed new light on the mechanism responsible for sequence learning. Despite the widely held assumption that transitional probability learning is essential to this process, the present results suggest instead that the sequences are learned through a process of discriminative learning, involving prediction and feedback from prediction error. (shrink)

This paper separates conditional parameter estima- tion, which consistently raises test set accuracy on statistical NLP tasks, from conditional model struc- tures, such as the conditional Markov model used for maximum-entropy tagging, which tend to lower accuracy. Error analysis on part-of-speech tagging shows that the actual tagging errors made by the conditionally structured model derive not only from label bias, but also from other ways in which the independence assumptions of the conditional model structure are unsuited to linguistic sequences. (...) The paper presents new word-sense disambiguation and POS tagging experiments, and integrates apparently conflicting reports from other recent work. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Response to Masafumi Ogawa, “Music Teacher Education in Japan: Structure, Problems, and Perspectives”Peggy WheelerMasafumi Ogawa's paper presents challenge after challenge facing the teacher and the teacher educator in Japan. One has the sense that a lifetime of frustrations with the national curriculum, the set-up of student teaching, and the definition of music as a school subject each made its way into the paper. Even choosing to focus on (...) teacher training still leaves a very broad topic for a relatively short paper. The central challenge seems to be the curriculum. How does the curriculum impact the teacher and the teacher training process? How does the underlying definition of music as well as the purpose that definition implies affect the curriculum? His paper also identifies a series of dualities or tensions that exist between two important components: the curriculum or teacher education. The fact that Japanese and American music education systems seem to be at opposite ends of some of these dualities is a compelling reason for exploring and discussing them.In the arena of teacher preparation, the dualities as they appear in their relative proportion of the teacher education curriculum are (1) performance versus academic music courses, such as history, theory, and composition, and (2) education versus music courses—a familiar lament among music education students. In student teaching, modeling in the classroom by the cooperating teacher is contrasted with providing opportunities for the student teacher to experiment with the teaching process. Evaluation of student teaching is a three-way tension involving the student teacher, the cooperating teacher, and the university professor.In his discussion of the school curriculum, Ogawa deplores the triumph of attitude over skill, and pleads for discernment in the application of national standards to meet the needs of the community and students. He returns to the nature of music and music education at several points in his paper, expanding the meaning and function of music beyond music as art. His dissatisfaction with the seemingly teacher-proof curriculum peaks when he advocates for the autonomy of the teacher in the classroom. Giving teachers the opportunity to devise their own curriculum seems to go to the other extreme. Having taught with colleagues who had virtually no training in music, a standard curriculum at the district or national level provides some essential boundaries.Ogawa's discussion of the impact of the national Course of Study on Japanese music education was particularly intriguing. As teacher certification in the United [End Page 205] States has begun to promote and reward National Board Certification, it is striking to consider the restrictions and disempowerment that Ogawa describes and credits to the omnipresent Course of Study. For someone unfamiliar with the Japanese system of education, some of the descriptions were enticing but brief. Other descriptions were a bit confusing, but after visiting the MEXT website, I think most of this confusion is due to translation. It is difficult to take any phrase that is packed with meaning in one culture and find a suitable phrase in another culture that will convey the associations that are connected with it. I would recommend quoting complete descriptions or including an appendix. A reference to the history of Japanese music education on Kensho Takeshi's website would also provide more context, particularly for the connection between emotion, music, and ethics.I want to thank Ogawa for stimulating me to consider issues of curriculum including how I have changed my views of curriculum since I returned to school teaching. First, I will describe my change of perspective. Then I would like to close by describing an aspect of curriculum and teacher education that has surfaced this past year. I would call this the meta-curriculum, and I wonder how we can prepare new teachers for this part of teaching. It seems to me that the world of philosophy is the quintessential and perhaps the only appropriate arena for this preparation.Beyond Curriculum in the ClassroomLike the first spring rain on newly cut grass, music education has a fresh and vital look to me. I returned to public school teaching this year after a hiatus of seventeen years. After focusing on viola performance and liberal arts... (shrink)

Essentially we show recent data to shed new light on the thorny controversy of how teeth arose in evolution. Essentially we show (a) how teeth can form equally from any epithelium, be it endoderm, ectoderm or a combination of the two and (b) that the gene expression programs of oral versus pharyngeal teeth are remarkably similar. Classic theories suggest that (i) skin denticles evolved first and odontode‐inductive surface ectoderm merged inside the oral cavity to form teeth (the ‘outside‐in’ (...) hypothesis) or that (ii) patterned odontodes evolved first from endoderm deep inside the pharyngeal cavity (the ‘inside‐out’ hypothesis). We propose a new perspective that views odontodes as structures sharing a deep molecular homology, united by sets of co‐expressed genes defining a competent thickened epithelium and a collaborative neural crest‐derived ectomesenchyme. Simply put, odontodes develop ‘inside and out’, wherever and whenever these co‐expressed gene sets signal to one another. Our perspective complements the classic theories and highlights an agenda for specific experimental manipulations in model and non‐model organisms. (shrink)

Une fois achevée la rédaction des Principia Mathematica, Russell se tourne vers la théorie physique et s’attaque au problème philosophique que pose notre connaissance du monde extérieur. Pendant plus d’une décennie, il élabore une « philosophie de la physique » à partir de l’analyse des avancées décisives de cette période marquée tant par l’avènement du « règne de la relativité » que par la transformation profonde des cadres conceptuels...

The dynamics/computation debate recalls a similar debate in the evolutionary biology community concerning the relative primacy of theories of structure versus theories of change. A full account of cognition will require a rapprochement between such theories and will include both computational and dynamical notions. The key to making computation relevant to cognition is not making it analog, but rather understanding how functional information-processing structures can emerge in complex dynamical systems.

In this paper, we argue that symbols are conventional vehicles whose chief function is denotation, while models are epistemic vehicles, and their chief function is to show what their targets are like in the relevant aspects. And we explain why this is incompatible with the deflationary view on scientific modeling. Although the same object may serve both functions, the two vehicles are conceptually distinct and most models employ both elements. With the clarification of this point we offer an alternative (...) account to the deflationary view – the Hybrid Account; and we defend our account in contrast with deflationism. (shrink)

In the end of the nineteenth century, there was a remarkable ‘empiricist attitude’ found among certain philosopher-scientists, an attitude which arguably emerged in the main as a reaction to the anti-scientific mood prevalent in the culture that time. Those philosopher-scientists, such as Mach and Hertz, were particularly anxious to emphasize and laud the privileged status of the empirical dimension ofour scientific knowledge, distinguishing it carefully from the theoretical constructions and hypothetical entities that are ordinarily posited by scientists. Yet, as I (...) exhibit in this article, there were certain crucial philosophical differences between these two thinkers with respect to their general conception of scientific theories and scientific norms guiding the activity. I suggest further that the most central difference in this context between Mach and Hertz can justifiably (and, perhaps, more fruitfully) be articulated and reckoned in traditional andcontemporary epistemological terms. (shrink)

Although more and more researches have shown that edge-based information is more important than surface-based information in object recognition, it remains unclear whether edge-based features play a more crucial role than surface-based features in category learning. To address this issue, a modified prototype distortion task was adopted in the present study, in which each category was defined by a rule or similarity about either the edge-based features (i.e., contours or shapes) or the corresponding surface-based features (i.e., color (...) and textures). The results of Experiments 1 and 2 showed that when the category was defined by a rule, the performance was significantly better in the edge-based condition than in the surface-based condition in the testing phase, and increasing defined dimensions enhanced rather than reduced performance in the edge-based condition but not in the surface-based condition. The results of Experiment 3 showed that when each category was defined by similarity, there was also a larger learning effect when the category was defined by edge-based dimensions than by surface-based dimensions in the testing phase. The current study is the first to provide convergent evidence that the edge-based information matters more than surface-based information in incidental category learning. (shrink)

Individual choice and freedom are repeatedly invoked in contemporary policy debates, including those with a focus on risk behaviors such as smoking and health insurance coverage. The idea of making the right choice with regard to health and well-being has been fortified by the neoliberal discourse of self-reliance, personal autonomy, and responsibility. This neoliberal view, stemming from the conceptualization of freedom of philosopher John Stuart Mill justifying the freedom of the individual in opposition to unlimited state control, holds that success, (...) good health, and favorable educational outcomes are largely due to individual effort. Correspondingly, so too is failure, including failure of.. (shrink)

Recent research suggests holding a structural, rather than interpersonal, understanding of racism is associated with greater impetus to address racial disparities. We believe greater acknowledgment of structural racism also functions to mitigate against empathic failures in response to structural injustices. Given South Africa’s situatedness as a country characterized by historical racialized oppression and continuing unjust legacies, it is appropriate to examine these ideas there. Across three studies, we tested the hypotheses that members of advantaged groups’ perspective taking and empathic concern (...) may be compromised in response to people challenging the unequal status quo, and that a priori perceptions about the impact of structural racism may mitigate or exacerbate such empathic failures. In Study 1, a national sample of White South Africans endorsed perceptions of interpersonal racism more readily than perceptions of structural racism, and expressed high levels of competitive victimhood for perceived anti-White structural racism. Studies 2 and 3 showed that White participants at a historically White university responded with impaired perspective taking and intergroup empathy bias in response to people challenging structural disparities. Finally, reduced recognition of continuing structural racism predicted greater intergroup empathy bias, which, in turn, was associated with reduced willingness to engage in intergroup discussions about past harm. We propose that greater acknowledgment of structural racism is necessary not only to surmount intergroup empathic failures, but also to transcend the socioeconomically unequal legacies of apartheid and beyond. (shrink)

Le célèbre ouvrage de Gilbert Durand, Les Structures anthropologiques de l’Imaginaire, propose une élucidation des fondements de l’imaginaire, c’est-à-dire de l’essence à partir de laquelle se dresse l’arborescence de la fantastique. Nous pensons que ces fondements — espace a priori et euphémisme — loin d’émerger d’une phénoménologie rigoureuse, au contraire découlent de présupposés psychanalytiques parasitant le projet initial. Le présent article n’a d’autre but que d’ouvrir la réflexion sur les fondements de l’imaginaire à la phénoménologie henryenne : l’affectivité comme identique (...) à l’être même, semble toute désignée pour compléter la fantastique transcendantale durandienne et ainsi offrir un renouveau aux structures de l’imaginaire. (shrink)

Perception is a central topic in both epistemology and philosophy of mind. This essay addresses perception from both perspectives, exploring its structure, phenomenology, and relation to belief and knowledge. Perception embodies sensory experience and in that way is phenomenologically representational; it is a response to its object and in that way a source of information about what is perceived; and it is a basis of belief and knowledge and in that way enables us to navigate the world. These points (...) are examined in relation to five dimensions of the theory of perception: the “contents” of perceptual experience; the levels of its responsiveness to its objects; the extent to which, in various forms, it may depend on conceptualizing what is perceived; its liability to influence by the perceiver’s beliefs or theoretical commitments; and its role in grounding justification and knowledge. (shrink)

The aim of this paper is to revisit the phlogiston theory to see what can be learned from it about the relationship between scientific realism, approximate truth and successful reference. It is argued that phlogiston theory did to some extent correctly describe the causal or nomological structure of the world, and that some of its central terms can be regarded as referring. However, it is concluded that the issue of whether or not theoretical terms successfully refer is not the (...) key to formulating the appropriate form of scientific realism in response to arguments from theory change, and that the case of phlogiston theory is shown to be readily accommodated by ontic structural realism. (shrink)

According to mainstream philosophical views causal explanation in biology and neuroscience is mechanistic. As the term ‘mechanism’ gets regular use in these fields it is unsurprising that philosophers consider it important to scientific explanation. What is surprising is that they consider it the only causal term of importance. This paper provides an analysis of a new causal concept—it examines the cascade concept in science and the causal structure it refers to. I argue that this concept is importantly different from (...) the notion of mechanism and that this difference matters for our understanding of causation and explanation in science. (shrink)

In this paper I challenge and adjudicate between the two positions that have come to prominence in the scientific realism debate: deployment realism and structural realism. I discuss a set of cases from the history of celestial mechanics, including some of the most important successes in the history of science. To the surprise of the deployment realist, these are novel predictive successes toward which theoretical constituents that are now seen to be patently false were genuinely deployed. Exploring the implications for (...) structural realism, I show that the need to accommodate these cases forces our notion of “structure” toward a dramatic depletion of logical content, threatening to render it explanatorily vacuous: the better structuralism fares against these historical examples, in terms of retention, the worse it fares in content and explanatory strength. I conclude by considering recent restrictions that serve to make “structure” more specific. I show however that these refinements will not suffice: the better structuralism fares in specificity and explanatory strength, the worse it fares against history. In light of these case studies, both deployment realism and structural realism are significantly threatened by the very historical challenge they were introduced to answer. (shrink)

Color experience is structured. Some ?unique? colors (red, green, yellow, and blue) appear as ?pure,? or containing no trace of any other color. Others can be considered as a mixture of these colors, or as ?binary colors.? According to a widespread assumption, this unique/binary structure of color experience is to be explained in terms of neurophysiological structuring (e.g., by opponent processes) and has no genuine explanatory basis in the physical stimulus. The argument from structure builds on these assumptions (...) to argue that colors are not properties of surfaces and that color experiences are neural processes without environmental counterparts. We reconsider the argument both in terms of its logic and in the light of recent models in vision science which point at environment-involving patterns that may be at the basis of the unique/binary structure of color experience. We conclude that, in the light of internal and external problems which arise for it, the argument from structure fails. (shrink)

By briefly reviewing three well-known scientific revolutions in fundamental physics (the discovery of inertia, of special relativity and of general relativity), I claim that problems that were supposed to be crying for a dynamical explanation in the old paradigm ended up receiving a structural explanation in the new one. This claim is meant to give more substance to Kuhn’s view that revolutions are accompanied by a shift in what needs to be explained, while suggesting at the same time the existence (...) of a pattern that is common to all of the discussed case-studies. It remains to be seen whether also quantum mechanics, in particular entanglement, conforms to this pattern. (shrink)

While generally accepted as an interpretive theory, Bull’s emblematic text demonstrates strong structural characteristics. Subsequent attributions move between the interpretive or ‘reflexive’ and t...

Conservatives and liberals disagree sharply on matters of morality and public policy. We propose a novel account of the psychological basis of these differences. Specifically, we find that conservatives tend to emphasize the intrinsic value of actions during moral judgment, in part by mentally simulating themselves performing those actions, while liberals instead emphasize the value of the expected outcomes of the action. We then demonstrate that a structural emphasis on actions is linked to the condemnation of victimless crimes, a distinctive (...) feature of conservative morality. Next, we find that the conservative and liberal structural approaches to moral judgment are associated with their corresponding patterns of reliance on distinct moral foundations. In addition, the structural approach uniquely predicts that conservatives will be more opposed to harm in circumstances like the well-known trolley problem, a result which we replicate. Finally, we show that the structural approaches of conservatives and liberals are partly linked to underlying cognitive styles. Collectively, these findings forge a link between two important yet previously independent lines of research in political psychology: cognitive style and moral foundations theory. (shrink)