Revisiting the history of relativity Content Type Journal Article DOI 10.1007/s11016-010-9466-4 Authors Lewis Pyenson, Department of History, Western Michigan University, Kalamazoo, MI 49008-5242, USA Sean F. Johnston, School of Interdisciplinary Studies, University of Glasgow, Rutherford-McCowan Building, Dumfries, Glasgow, Scotland G2 0RB, UK Alberto A. Martínez, Department of History, University of Texas at Austin, 1 University Station B7000, Austin, TX 78712-0220, USA Richard Staley, Department of the History of Science, University of Wisconsin-Madison, 226 Bradley Memorial Building, 1225 Linden Drive, Madison, WI (...) 53706-1528, USA Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796 Journal Volume Volume 20 Journal Issue Volume 20, Number 1. (shrink)
Gomez, Cristina Lledo This article explores the idea that motherhood is an invitation to engage with the paschal mystery and can thus be a salvific experience in the lives of women. This is of even greater significance for a Christian mother who can explicitly name the experience as her own sharing in the paschal event of Jesus. This article will focus on crisis moments of motherhood in a contemporary Western context, exploring particularly the issues raised in first becoming a mother, (...) and on the initial years of motherhood. (shrink)
La cuestión de la justicia global en el ámbito de la bioética no es una cuestión baladí, en ella nos jugamos la dignidad a escala planetaria y la dignidad de todos y cada uno de los seres humanos en particular. El paradigma para pensar el mundo ya no es la confrontación Este-Oeste, ni incluso Norte-Sur. Los problemas, con sus posibilidades y limitaciones en la forma de abordarlos, tienen dimensiones globales. Urge una rearticulación de los discursos parcelados y compartimentados pues, desde (...) ellos, resulta extremadamente difícil seguir abordando las cuestiones que afectan a la vida descontextualizándolas del entorno global. En la misma medida tampoco se puede pensar apropiadamente la justicia sin las condiciones práctico-materiales concretas que, a nivel vital, vienen determinadas por el factum de lo global. Ni se puede abordar una ética de la vida y para la vida sin atender a referencias globales y criterios de justicia. Todo ello plantea un nuevo esquema en el que la tríada vida-globalidad-justicia ha de ser abordada también desde la Bioética Teológica. O, lo que es lo mismo, la Teología Moral no puede prescindir hoy de esa triple conexión emergente so pena de que traicione su propio estatuto de servicio. La intención de fondo en todo ello no es sino estimular la búsqueda, el diálogo y la cooperación de los bioeticistas, tanto de índole secular como teológica, en la tarea ineludiblemente humana de cuidar la fragilidad vital en todas sus dimensiones. Francisco J. Alarcos Martínez, nacido en 1963 en Cúllar (Granada), terminó los estudios de Teología en la Facultad de Teología de Granada (1986). Licenciado en Teología moral (1999) por la U. P. Comillas (Madrid), con premio extraordinario, realiza el Máster en Bioética en la misma Universidad. Se doctoró en la Facultad de Teología de Granada (2004) en la cual es profesor de Bioética y secretario de la Cátedra Andaluza de Bioética, dependiente de la misma Facultad. Además, es director del Centro de Estudios Teológico-Pastorales de Guadix (Granada) y profesor de moral en el mismo. Interviene también como profesor invitado en diversos Máster, así como en cursos monográficos sobre Bioética. Entre sus publicaciones se encuentran: Para vivir la ética en la vida pública (2000), Bioética y pastoral de la salud (2002), Co-autor de 10 palabras clave en humanizar la salud (2002), Ed. de La moral cristiana como propuesta. Homenaje al profesor Eduardo López Azpitarte (2004). Su dedicación académica la compagina con la praxis pastoral como presbítero secular en la diócesis de Guadix-Baza. (shrink)
This article explores the proposal offered by Ian Hacking for the distinction between natural and social sciences—a proposal that he has defined from the outset as complex and different from the traditional ones. Our objective is not only to present the path followed by Hacking's distinction, but also to determine if it constitutes a novelty or not. For this purpose, we deemed it necessary to briefly introduce the core notions Hacking uses to establish his strategic approach to (...) social sciences, under the assumption that they are less well known that the ones corresponding to his treatment of natural sciences. Key Words: Ian Hacking • natural sciences • social sciences • distinction. (shrink)
Virtue ethicists argue that modern ethical theories aim to give direct guidance about particular situations at the cost of offering artificial or narrow accounts of ethics. In contrast, virtue ethical theories guide action indirectly by helping one understand the virtues?but the theory will not provide answers as to what to do in particular instances. Recently, this had led many to think that virtue ethical theories are self-effacing the way some claim consequentialist and deontological theories are. In this paper I defend (...) virtue ethics against the charge of self-effacement. I distinguish between modestly self-effacing theories, immodestly self-effacing theories and theories that recommend indirect guidance. Though all self-effacing theories are indirect, not all indirect theories are self-effacing. I argue that virtue ethics is not self-effacing, but rather indirectly action-guiding. The response I articulate draws on the distinctive virtue ethical mode of action-guidance: namely, that thinking hard about virtue and what kind of person one aims to be offers the kind of guidance we want (or should want) as we face practical moral problems. (shrink)
Representationalist theories of phenomenal consciousness have problems in accounting for pain, for at least two reasons. First of all, the negative affective phenomenology of pain (its painfulness) does not seem to be representational at all. Secondly, pain experiences are not transparent to introspection in the way perceptions are. This is reflected, e.g. in the fact that we do not acknowledge pain hallucinations. In this paper, I defend that representationalism has the potential to overcome these objections. Defenders of representationalism have tried (...) to analyse every kind of phenomenal character in terms of indicative contents. But there is another possibility: Affective phenomenology, in fact, depends on imperative representational content. This provides a satisfactory solution to the aforementioned difficulties. (shrink)
Miller (2005) and Miller (2008) argue that the branching picture of time is incompatible with the possibility of backwards time travel. In this paper I show that Miller’s conclusion is based on a hidden assumption which, while generally plausible, is unwarranted if time travel is possible. Branching time is, after all, compatible with time travel as Miller characterises it.
Our limited a priori-reasoning skills open a gap between our finding a proposition conceivable and its metaphysical possibility. A prominent strategy for closing this gap is the postulation of ideal conceivers, who suffer from no such limitations. In this paper I argue that, under many, maybe all, plausible unpackings of the notion of ideal conceiver, it is false that ideal negative conceivability entails possiblity.
In this paper, using a multilevel approach, we defend the positive role of natural selection in the generation of organismal form. Despite the currently widespread opinion that natural selection only plays a negative role in the evolution of form, we argue, in contrast, that the Darwinian factor is a crucial (but not exclusive) factor in morphological organization. Analyzing some classic arguments, we propose incorporating the notion of ‘downward causation’ into the concept of ‘natural selection.’ In our opinion, this kind of (...) causation is fundamental to the operation of selection as a creative evolutionary process. (shrink)
There has been much discussion of so-called teleosemantic approaches to the naturalization of content. Such discussion, though, has been largely confined to simple, innate mental states with contents such as ?There is a fly here.? Even assuming we can solve the issues that crop up at this stage, an account of the content of human mental states will not get too far without an account of productivity: the ability to entertain indefinitely many thoughts. The best-known teleosemantic theory, Millikan's biosemantics, offers (...) an account of productivity in thought. This paper raises a basic worry about this account: that the use of mapping functions in the theory is unacceptable from a naturalistic point of view. (shrink)
It has become almost commonplace to recognise that teaching is an embodied practice. Most analyses of teaching as embodied practice focus on the embodied nature of the teacher as subject. Here, we use Butler's concept of performativity to analyse the reiterated acts that are intelligible as—performatively constitute—teaching, rather of the teacher as subject. We suggest that this simultaneously helps explain the persistence of teaching as a narrow repertoire of actions recognisable as ‘teaching’, and the policing of conformity to teaching thus (...) embodied. However, like performatively accomplished subjectivity, this repertoire is unstable and ambiguous, and thus open to change and disruption. Moreover, teacher subjectivities may lead them to mobilise these possibilities of disruption. (shrink)
Information is a notion of wide use and great intuitive appeal, and hence, not surprisingly, different formal paradigms claim part of it, from Shannon channel theory to Kolmogorov complexity. Information is also a widely used term in logic, but a similar diversity repeats itself: there are several competing logical accounts of this notion, ranging from semantic to syntactic. In this chapter, we will discuss three major logical accounts of information.
I show that extant teleosemantic accounts of content are, declarations to the contrary notwithstanding, unable to secure univocal content attributions to simple mental states. I then sketch an alternative account which is free from this problem.
Our aim in this article, after providing the general framework of the reception of William James in Spain, is to trace the reception of The Varieties of Religious Experience through Unamuno’s reading of this book.
The Freud Wars offers a comprehensive introduction to the crucial question of the justification of psychoanalysis. Part I examines three powerful critiques of psychoanalysis in the context of a recent controversy about its nature and legitimacy: is it a bankrupt science, an innovative science, or not a science at all but a system of interpretation? The discussion makes sense of the entrenched disagreement about the validity of psychoanalysis, and demonstrates how the disagreement is rooted in the theoretical ambiguity of the (...) central concept of psychoanalysis, the unconscious. This ambiguity is then presented as the pathway to a new way of understanding psychoanalysis, based on a mode of thinking that precedes division into mental and physical. The reader is drawn into a lively and thought-provoking analysis of the central issues: · What would it mean for psychoanalysis to count as a science? · Is psychoanalysis a form of hermeneutics? · How can mental and physical explanations coincide? Part II contains the source material for Part I: the influential critiques of psychoanalysis by Adolf Grünbaum, Thomas Nagel and Jürgen Habermas. No specialised knowledge is assumed, and the book is clear and accessible while still conveying the complexity and richness of the subject. It provides a fascinating introduction to philosophical thinking on psychoanalysis for students and practitioners of psychoanalysis, psychotherapy and philosophy. (shrink)
This chapter proposes that the cognitive mechanisms of joint attention (defined as a combination of attention following skills with attention contact skills) are not metarepresentational in nature, but based upon the coordination of two different types of intentional understanding — third-person and second-person intentions — that are represented at the level of a sensorimotor notion of others as subjects. This proposal is developed and analyzed from a comparative perspective through a review of findings concerning apes, typically developing children, and children (...) with autism. It is argued that each of these populations illustrates a different type of joint attention system based upon different notions of the other as a subject. (shrink)
In this paper we present a semantic analysis of the application of didactic constructivism to chemical education. We show that the psychological basis of constructivism yield, when applied to chemistry, an internalist semantics for the chemical names. Since these names have been presented as typical examples of an externalism for kind terms, a fundamental incompatibility ensues. We study this situation, to conclude that it affects chemical education at every level. Finally, we present a preliminary analysis of this problem from the (...) point of view of physics. (shrink)
This book presents a historical perspective on patterns of human rights abuse in Cuba, El Salvador and Nicaragua and incorporates international relations in to the traditional theories of state repression found within the social sciences.
Abstract: I address the issue of how pretence emerged in evolution by reviewing the (mostly negative) evidence about pretend behaviour in non-human primates, and proposing a model of the type of information processing abilities that humans had to evolve in order to be able to pretend. Non-human primates do not typically pretend: there are just a few examples of potential pretend actions mostly produced by apes. The best, but still rare, examples are produced by so-called 'enculturated' apes (reared by humans) (...) and among them specially those that have been systematically trained to use symbols (so-called 'linguistic' apes). A hypothesis that would explain the lack of pretence in apes is that they lack the mentalistic ability of theory of mind. However, in the last years apes have been demonstrated to possess relatively sophisticated social cognitive skills, some of them ontogenetically appearing in humans alongside with or even after pretend play. As a solution to the paradox, I discuss a model according to which pretence is supported by a mechanism capable of computing intentional relations with non-existing objects or properties (Intentional non-existence), as opposed to mechanisms computing intentional relations with existing, although not necessarily currently perceived, objects (Intentional availability). Apes possess the latter, which allows them to solve a variety of theory of mind tasks, but not the former, which typically prevents them from developing pretence. (shrink)
Explicitness has usually been approached from two points of view, labelled by Kirsh the structural and the process view, that hold opposite assumptions to determine when information is explicit. In this paper, we offer an intermediate view that retains intuitions from both of them. We establish three conditions for explicit information that preserve a structural requirement, and a notion of explicitness as a continuous dimension. A problem with the former accounts was their disconnection with psychological work on the issue. We (...) review studies by Karmiloff-Smith, and Shanks and St. John to show that the proposed conditions have psychological grounds. Finally, we examine the problem of explicit rules in connectionist systems in the light of our framework. (shrink)
This commentary criticizes nonverbal methods of assessing theory-of-mind on the basis of prior training of the critical response because they would encourage simple, nonmentalistic, associative solutions even in subjects with mentalistic capacities. I propose instead a new experimental paradigm based upon the use of spontaneous responses in less artificial situations. This method has already provided positive evidence of some level of ToM understanding in nonhuman primates.
This paper reports a longitudinal study on the ontogeny of triadic cooperative interactions (involving coordinations of objects and people) in a hand-reared lowland gorilla ( Gorilla gorilla gorilla ) from 6 months to 36 months of age. Using the behavioural categories developed by Hubley and Trevarthen (1979) to characterize the origins of “secondary intersubjectivity” in human babies between 8-12 months of age, I chart the emergence of comparable coordinations of gestures and actions with objects and acts of dyadic communication. The (...) findings show that the categories and concepts of secondary intersubjectivity are applicable to the gorilla, who engages with people in cooperative actions with objects. The ontogeny of triadic interaction in the gorilla was very similar to that described in human infants, but more extended in time and with some peculiarities, such as the absence of pointing and showing gestures, some of whose functions might be taken over by contact gestures which in human infants may appear later in development. The results do not support claims of human uniqueness in the development of cooperative action, but suggest a heterochrony in some aspects of the ontogeny of triadic interactions leading to a divergence between gorilla and human infants within secondary intersubjectivity. (shrink)
The cross-cultural literature is reviewed and integrated together with attitude theories, thereby outlining a model through which certain values influence the intervening variables that ultimately lead managers to tolerate employee bribery. The case of Latin America is employed to illustrate how regionally dominant cultural values may shape managers' attitudes, subjective norms, and perceived behavioral control, which in turn affect tolerance of employee bribery. A series of research propositions and practical recommendations are derived from the model.
Should CSR be approached only on a voluntary basis or should it be complemented with a compulsory regulatory framework? What type of government intervention is more effective in fostering CSR among companies? This paper is an attempt to answer these questions, reviewing the debate between proponents of the voluntary case and the obligatory case for CSR, and critically analysing current international government-led initiatives to foster CSR among companies, and national government-led initiatives in the EU area. Finally, the paper focuses on (...) the Spanish case, as an example of the failure of an exclusively voluntary approach. Despite the rapid uprise of CSR, Spain is still far behind late in CSR promotion strategies. Most action has been undertaken by companies themselves with no common guidelines, governmental support, or independent verification. The lack of a regulatory framework for CSR or ethical investment issues and the virtual absence of other indirect incentives, explains the misbalance between private, public and Third Sector initiatives. Based on the Spanish context which is quite similar to other non-OECD countries, the authors call for a more proactive government position in CSR related issues. The conclusions of the paper detail the features of this regulatory framework and other policies to promote CSR in Spain as well as in other OECD countries. (shrink)
Usual derivations of Lilders's projection rule show that Liuders's rule is the rule required by quantum statistics to calculate the final state after an ideal (minimally disturbing) measurement. These derivations are at best inconclusive, however, when it comes to interpreting Liuders's rule as a description of individual state transformations. In this paper, I show a natural way of deriving Liiders's rule from well-motivated and explicit physical assumptions referring to individual systems. This requires, however, the introduction of a concept of individual (...) state which is not standard. (shrink)
This article explores the question of how scientific uncertainty can be managed in medical decision making using the Advisory Committee on Immunization Practices as a case study. It concludes that where a high degree of technical consensus exists about the evidence and data, decision makers act according to a clear decision rule. If a high degree of technical consensus does not exist and uncertainty abounds, the decision will be based on a variety of criteria, including readily available resources, decision-process constraints, (...) and the available knowledge base, among other things. Decision makers employ a variety of heuristic devices and techniques, thereby employing a pragmatic approach to uncertainty in medical decision making. The article concludes with recommendations for managing scientific uncertainty in medical decision making. (shrink)
There is no known syntactic characterization of the class of finite definitions in terms of a set of basic definitions and a set of basic operators under which the class is closed. Furthermore, it is known that the basic propositional operators do not preserve finiteness. In this paper I survey these problems and explore operators that do preserve finiteness. I also show that every definition that uses only unary predicate symbols and equality is bound to be finite.
This article examines four leading multi-stakeholder labour monitoring organizations. All operating in the maquiladora industry, these organizations are viewed in light of the growing global trend toward industry self-regulation, or what has been referred to as the 'global out-sourcing of regulation'. Their Board compositions, codes of conduct and monitoring and enforcement strategies are all examined as a means of tentatively positioning these organizations along an 'egoist-instrumentalist-moralist' ethical culture continuum. Such a framing provides insights into the perceived salience of these organizations' (...) broader stakeholders, the effectiveness of codes of conduct on workplace practices more generally, and the role that ethics plays in the governance and accountability of these increasingly important types of organizations. (shrink)
With the Accreditation Council for GraduateMedical Education''s designation of professionalism as one of six corecompetencies in residency medical education,some educators of residents and medicalstudents believe that the concept ofprofessional role is too restrictive and narrowfor grappling with the complex dynamics ofprofessional–patient relationships. The ethicalquandaries of abortion and physician assistedsuicide illustrate how individual personalvalues cannot be ignored in the dynamicrelationship between health care professionaland patient. This article describes a medicalschool course where students are paired with patient mentors. Within the dynamic andintimate (...) relationship that unfolds over severalmonths, students explore the experience ofboundaries, and are invited to use thisexperience to consider their evolvingprofessional identity. (shrink)
This essay reports on phenomenological research conducted with people who describe having been harassed, having been accused of harassment, and/or having mediated or adjudicated harassment disputes. The authors review recent legal conceptions of sexual harassment and articulate a methodology for analyzing individual narrative accounts. The analysis of six selected interviews (three alleged harassers and three declared harassees) depicts how, through discourse with others, persons in ambiguous cases of harassment come to perceive themselves as harassers or harasseesgradually, how intention is inferred (...) from conductcontingently, and how perceptions and expressions are often reified as certainties in the effort to secure some sense of justiceinstitutionally. (shrink)
We analyzed a sample of 356 forms containing information that Colorado law legally requires both licensed and unlicensed therapists to disclose to clients. The majority of forms contained the legally mandated information; fewer forms contained ethically desirable information. The average readability grade level was 15.74, corresponding to upper-level college, and 63.9% of the forms reached the highest (most difficult) readability grade of 17 +. Therapists are obeying the law, but do not appear to be taking advantage of the opportunity to (...) provide their clients useful information in an accessible way. (shrink)
In the philosophy of science, abstraction has usually been analyzed in terms of the interface between our experience and the design of our concepts. The often implicit assumption here is that such interface has a definite identifiable and universalizable structure, determining the epistemic correctness of any abstraction. Our claim is that, on the contrary, the epistemic grounding of abstraction should not be reduced to the structural norms of such interface but is also related to the constraints on the cognitive processes (...) of specific abstractions. This suggests that we should understand abstraction as embodied in different kinds of abstraction practices. (shrink)
The Priestley duality for Wajsberg algebras is developed. The Wajsberg space is a De Morgan space endowed with a family of functions that are obtained in rather natural way.As a first application of this duality, a theorem about unicity of the structure is given.
Transplantation continues to push the frontiers of medicine into domains that summon forth troublesome ethical questions. Looming on the frontier today is human facial transplantation. We develop criteria that, we maintain, must be satisfied in order to ethically undertake this as-yet-untried transplant procedure. We draw on the criteria advanced by Dr. Francis Moore in the late 1980s for introducing innovative procedures in transplant surgery. In addition to these we also insist that human face transplantation must meet all the ethical requirements (...) usually applied to health care research. We summarize the achievements of transplant surgery to date, focusing in particular on the safety and efficacy of immunosuppressive medications. We also emphasize the importance of risk/benefit assessments that take into account the physical, aesthetic, psychological, and social dimensions of facial disfiguration, reconstruction, and transplantation. Finally, we maintain that the time has come to move facial transplantation research into the clinical phase. (shrink)
Abstract This article has two parts. The first is an explanation of the place of moral education in the history of the Spanish educational system, and the second briefly describes the research work of the Research Group on Moral Education from the University of Barcelona. The particular political and social context in which Spanish education has developed has caused moral education to acquire a special nature that is distinct even from that in other countries in the same geographical area. Moral (...) education in schools was and is constantly infiltrated with sectarian connotations which, in turn, distorted what should have been a matter discussed calmly and rationally in an ethical and pedagogical framework. To defend a model of education of morals and values like that which guides our research and pedagogy, is to defend the coexistence of diverse ideologies and beliefs. Schools cannot fail to offer the moral and ethical education proposed (in our judgement, indispensible in a democratic and pluralistic model of education) to all citizens alike, independent of their own beliefs or ideologies. (shrink)
In the centenary year of Turing’s birth, a lot of good things are sure to be written about him. But it is hard to find something new to write about Turing. This is the biggest merit of this article: it shows how von Neumann’s architecture of the modern computer is a serendipitous consequence of the universal Turing machine, built to solve a logical problem.
This article is a study of the survival of scribal culture in nineteenth-century Spain in the form of the so-called ?memory books? (libros de memorias). I analyse their relationship with the educational developments of the period, as well as the material characteristics and the content of these texts, in order to define their typical features. These texts were the products of hybrid writing practices, in the sense that several elements were frequently superimposed on one another: economic news, personal, family and (...) social events and even historical details. Hence the similarity between the memory books and other genres such as account books (libros de cuentas) and family books (libros de familia). Lastly, I will examine some nineteenth-century examples as epigones of a writing genre which had its origins in the later Middle Ages and Early Modern period. ?One morning, while tidying up the bedroom, Rosa opened the drawer in the trunk where Cholo kept his papers. There she found the papers about the property and, in a corner, together with the Family Book and the social security booklet, the papers from the bank [?]. And she was about to put it away when it occurred to her to take off the elastic band around the big folder which Cholo had kept from his time in Switzerland. There were things, names and so on that she didn?t understand, but in the middle there were also some of the cards she had sent from Aran.?1. (shrink)
In this paper, we deal with the theoretical framework for a single-walled carbon nanotube serving as a virus or bacterium sensor, with the complicating influences of non-locality and surface effects taken into account. It is demonstrated that these effects are not negligible as is often assumed in the literature; they may greatly influence both the vibration behaviour as well as the identification process of the virus or bacterium.
The tree-based data structure of -tree for propositional formulas is introduced in an improved and optimised form. The -trees allow a compact representation for negation normal forms as well as for a number of reduction strategies in order to consider only those occurrences of literals which are relevant for the satisfiability of the input formula. These reduction strategies are divided into two subsets (meaning- and satisfiability-preserving transformations) and can be used to decrease the size of a negation normal form A (...) at (at most) quadratic cost. The reduction strategies are aimed at decreasing the number of required branchings and, therefore, these strategies allow to limit the size of the search space for the SAT problem. (shrink)
A topological duality is presented for a wide class of lattice-ordered structures including lattice-ordered groups. In this new approach, which simplifies considerably previous results of the author, the dual space is obtained by endowing the Priestley space of the underlying lattice with two binary functions, linked by set-theoretical complement and acting as symmetrical partners. In the particular case of l-groups, one of these functions is the usual product of sets and the axiomatization of the dual space is given by very (...) simple first-order sentences, saying essentially that both functions are associative and that the space is a residuated semigroup with respect to each of them. (shrink)
An interpretation of quantum mechanics that rejects hidden variables has to say something about the way measurement can be understood as a transformation on states of individual systems, and that leads to the core of the interpretive problems posed by Luders' projection rule: What, if any, is its physical content? In this paper I explore one suggestion which is implicit in usual interpretations of the rule and show that this view does not stand on solid ground. In the process, important (...) aspects of the role played by the projection postulate in the conceptual structure of quantum mechanics will be clarified. It will be shown in particular that serious objections can be raised against the (often implicit) view that identifies the physical relation of compatibility preserved by Luders' rule with the relation of simultaneous measurability. (shrink)
“Herr Phister as Captain Scipio” is a succinct and concentrated study by Kierkegaard on the art of acting. In spite of its brevity and by virtue of its conceptual parsimony, the work deserves closer attention, if only because it also exhibits some of the pesky problems involved in the practice of interpreting oneself. I argue that “Herr Phister as Captain Scipio” forms part of the habitual context of Kierkegaard’s thought about selfhood. To be more specific, I attempt to show not (...) only that this essay (attributed to the pseudonym Procul) is about the theory of the three stages of existence but also that the aesthetic is represented by Scipio, the ethical by Phister, and the religious by Procul himself. (shrink)
En este texto se examina críticamente la teoría combinatoria de las representaciones científicas de Andoni Ibarra y Thomas Mormann. El núcleo de la crítica va dirigido a mostrar que una serie de estudios sobre la ciencia, que ellos mismos mencionan, sugiere que la clasificación en tipos de representaciones propuesta es problemática. Es más, esos mismos estudios muestran que por lo menos muchas representaciones tienen una dimensión histórica que parece imposible capturar por medio del tipo de formalismo propuesto. /// Ibarra and (...) Mormann's combinatorial theory of scientific representations is subject to critical scrutiny. It is argued that the classification of types of representations offered cannot serve as a basis for an analysis of the variety of representations that happen to arise in science. Empirical studies on ways of representing used in science strongly suggest that a formal theory of representations of the kind proposed is not able to capture the historical dimension of the structure of representations. (shrink)
Divldimos este trabajo en tres partes. A) El momento histörico, para resaltar la importancia de la educaciön para la vlda de la persona. B) El momento antropolögico o explicativo del concepto de autorrealizaciön. C) El momento etico-pedagögico.
The numerical study of a glycolytic model formed by a system of three delay differential equations reveals a multiplicity of stable coexisting states: birhythmicity, trirhythmicity, hard excitation and quasiperiodic with chaotic regimes. For different initial functions in the phase space one may observe the coexistence of two different quasiperiodic motions, the existence of a stable steady state with a stable torus, and the existence of a strange attractor with different stable regimes (chaos with torus, chaos with bursting motion, and chaos (...) with different periodic regimes). For a single range of the control parameter values our system may exhibit different bifurcation diagrams: in one case a Feigenbaum route to chaos coexists with a finite number of successive periodic bifurcations, in other conditions it is possible to observe the coexistence of two quasiperiodicity routes to chaos. These studies were obtained both at constant input flux and under forcing conditions. (shrink)
Let L be one of the topological languages L t , (L ∞ω ) t and (L κω ) t . We characterize the topological spaces which are models of the L-theory of the class of ordinals equipped with the order topology. The results show that the role played in classical model theory by the property of being well-ordered is taken over in the topological context by the property of being locally compact and scattered.