The co-instantiation thesis is pivotal to a significant solution to the problem of causal exclusion. But this thesis has been subject to some powerful objections. In this paper, I argue that these difficulties arise because the thesis lacks the necessary metaphysical framework in which its claims should be interpreted and understood. Once this framework is in place, we see that the co-instantiation thesis can answer its critics. The result is a rehabilitated co-instantiation solution to the troubling problem of causal exclusion. (...) But questions remain concerning the viability of certain of its applications. (shrink)

Despite growing awareness around human impacts on marine ecosystems, little action is taken to reduce the negative effects of organizations on the ocean, thus increasing risks of global collapse. In this paper, I argue that organizations act as systems of ocean destruction, and I explore how to operate a shift to organizations as systems of ocean conservation and thriving, enabling human–ocean socio‐ecological coviability. To do so, I analyze the organizational affordances of the ocean: incommensurability, open access and complex property regimes, (...) structural domination by humans and land, perceived inexhaustibility, and cognitive distance. Then, based on the transdisciplinary analysis of mechanisms of ocean destruction, I discuss the constitution of ocean negative commons and the ruining of the ocean. Lastly, based on four drivers (technology and innovation, consumption, marginalization and social orders), I suggest alternative organizing principles that might allow to manage these commons and to transform organizations to achieve socio‐ecological coviability with the ocean: degrowth, total responsibility, full cost allocation, ocean equity, and adaptive, place‐based co‐management. (shrink)

ABSTRACT In this paper, I argue that a number of influential Millian responses to Frege’s puzzle, which consist in denying that Frege’s data apply to natural languages, are not viable if logic is to play its role in legitimizing the logical appraisal of rational subjects. A notion of validity which does justice to the normativity of logic must make room for a distinction between valid inferences and enthymemes. I discuss the prospects of formal, relevant and manifest validity as candidates for (...) a notion which complies with this desideratum. Their success, or failure is argued to hang on the viability of a semantical account of de jure co-reference, which is in tension with standard Millian tenets. I conclude that these Millian theories face the following dilemma: either accept that there is no notion of logical validity which makes logic normative for reasoning, thus jeopardizing our well entrenched practices of rational appraisal; or accept that de jure co-reference is a real semantical relation. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS Good and Evil: Interpreting a Human Condition. By EDWARD FARLEY. Minneapolis, Minn.: Fortress Press, 1990. Pp. xxi + 295. The Evils of Theodicy. By TERRENCE W. TILLEY. Washington, D.C.: Georgetown University Press, 1990. Pp. xii + 277. The Co-Existence of God and Evil. By JANE MARY TRAU. New York, N.Y.: Peter Lang, 1991. Pp. 109. Evil is deeply and endlessly fascinating to the religious mind. On the (...) one hand, it challenges religion. The existence of the evils within our ken poses a threat to the rationality of central tenets of theism; the presence of overwhelming evils within our lives can threaten the viabil· ity of our religious attitudes and practices. On the other hand, religions typically offer strategies for coping with evil. They propose explanations of its origins that may aid us in understanding it, and they con· tain salvific practices that are meant to lead to redemption from sin or the cessation of suffering. So religious responses to evil are bound to be complex, and this complexity will inevitably be reflected in the treatment of evil in academic discourses. In addition, the present academic division of labor results in religion being studied in many disciplines. Each of them has its own traditions and agendas, and this often leads to a diversity of approaches that gives interdisciplinary dis· cussion of religious responses to evil something of the air of conversa· tion after Babel. The three books under review here, which represent the disciplines of philosophy, religious studies, and theology, illustrate nicely both the complexity and the diversity. Jane Mary Trau, who is Associate Professor of Philosophy at Barry University, has written a short essay in analytic philosophy of religion proposing a solution to the logical problem of evil. The problem arises from the fact that there are arguments purporting to show that the proposition that God is omniscient, omnipotent, and omnibenevolent is inconsistent with the proposition that evil exists. One way to solve the problem would be to find a possibly true proposition such that it is consistent with the proposition ·that God is omniscient, omnipotent, and omnibenevolent and together with that proposition entails that evil exists. Alvin Plantinga's celebrated free-will defense offers a solution of this sort. Trau's alternative solution is a version of the familiar greater-goods defense. Trau's main claim is that it is possible that evil has positive value. An evil has positive value if it is logically necessary for some greater 525 526 BOOK REVIEWS good, and it certainly seems to he possible that some evils have positive value. Thus, for example, suppose God creates nothing other than two angels, A and B. Nothing interrupts the felicity of either hut a mild pang of sorrow felt by A, to which B responds with compassion. A's sorrow is logically necessary for the greater good of B's compassionate response to A's sorrow. Hence A's sorrow is an evil that has positive value. Moreover, the proposition that evils with positive value exist is consistent with the proposition that God is omniscient, omnipotent, and omnihenevolent. So the existence of evil is consistent with the existence of an omniscient, omnipotent, and omnihenevolent deity. In other words, Trau's version of the greater-goods defense does seem to provide a solution to the logical problem of evil. But that is not to say that all the evils there actually are or even all those we know about do or could have positive value. Thus it does not follow, without further assumptions, that the existence of all the evils there actually are is consistent with the existence of an omniscient, omnipotent, and omnihenevolent deity. In a discussion of natural evil near the end of her hook, Trau acknowledges the need for such additional assumptions. She says: "Four assumptions underlie the claim that natural evils have positive value: (1) The material universe has positive value. (2) The material universe must function in a way that requires the occurrence of natural evils as secondary effects. (3) The material universe is either the best or the only possible universe. (4) If the universe as we know it did not function the way it does... (shrink)

In contemporary literature, the fact that there is negative causation is the primary motivation for rejecting the physical connection view, and arguing for alternative accounts of causation. In this paper we insist that such a conclusion is too fast. We present two frameworks, which help the proponent of the physical connection view to resist the anti-connectionist conclusion. According to the first framework, there are positive causal claims, which co-refer with at least some negative causal claims. According to the second framework, (...) negative causal claims are generated from mapping and comparing different scenarios, which can fully be accounted for in purely positive terms. Since the positive causal claims evoked by both frameworks pose no obvious difficulties for the physical connection view, these frameworks make it possible for the connectionists to accommodate negative causal claims into their theory. Once these strategies are available, the connectionists become able to render all the arguments starting from the observation that there are negative causal claims in our causal discourse inconclusive with regard to the viability of the physical connection view. (shrink)

This article focuses on Kyoto School philosophy’s “philosophy of world history,” during World War II, and its arguments for a multipolar world order in opposition to the older Eurocentric and colonialist world order. The idea was articulated by the second generation of the Kyoto School—Nishitani Keiji, Kōyama Iwao, Kōsaka Masaaki, and Suzuki Shigetaka—in a series of symposia held during 1941 to 1942 and titled the “The World-historical Standpoint and Japan.” While rejecting on the one hand the myopic patriotism of the (...) ultranationalists, they argued for a view to the world and its history, that in contrast to the Eurocentric view to world history, was polycentric. In terms of world politics they associated their view with the aim to construct a co-prosperity sphere in East Asia of autonomous nations to counter European colonialism as part of a new polycentric or multipolar world order. Metaphysically this notion of a co-prosperity sphere as well as of a multipolar world was grounded in the Kyoto School’s concept of “nothingness” as an open space for autonomous but corelated subjects. During the war, these discussions came under fire by critics from the Right, and then after the war, from the Left. I will examine the potential viability of these ideas today as a polycentric world may be on the horizon that ideally would give space to difference and diversity and avoid the violence of homogenization. A comparison of their notion of the nothing with Jean-luc Nancy’s concept of the same may provide some clues. (shrink)

This book offers a comprehensive primer for the study of intensionality. It explores and assesses those key theories of intensionality which have been developed in the twentieth and early twenty-first centuries. Each of the examined theories is tested as to whether it can account for the problems associated with the intersubstitution salva veritate of co-extensional expressions, and existential generalisation. All of these theories are subsequently compared so as to determine which of them comes closest to successfully solving these problems. The (...) book examines four kinds of intensionalist approaches: the Fregean approach ; the possible-worlds approaches of Carnap, Montague and Cresswell; the theory of properties relations and propositions devised by Bealer; and the Meinongian approaches put forward by Zalta and Priest. The book also proposes an alternative to intensionalism: sententialism. Sententialists argue that the problems of intensionality could be solved by appealing to linguistic items rather than intensional entities. Drawing on the works of Quine, Davidson, Scheffler and R. M. Martin, it explores the viability and value of sententialism as an alternative to intensionalism. (shrink)

This article shows how attention to extended metaphors provides the basis for a substantive account of what it is to understand a metaphor. Offering an analysis of extended metaphors modeled on an analysis of co-referential anaphoric chains, this article presents an account of how contexts makes metaphors. The analysis introduces the concept of expressive commitment, commitment to the viability and value of particular modes of discourse. Unlike literal interpretation, metaphorical interpretation puts the expressive commitment in the forefront of the (...) interpretive process. The analogy between extended metaphors and anaphora provides a structure for describing what it is to interpret expressions metaphorically. It generates an account that explains the affinities and differences between extension and explication, and hence of the age-old problem of paraphrase. Further, the account allows for the open-endedness of metaphor without succumbing to the view that metaphor is non-cognitive. Finally, the account developed here underscores the role of expressive commitment in metaphorical interpretation. (shrink)

Arithmetical pluralism is the view that there is not one true arithmetic but rather many apparently conflicting arithmetical theories, each true in its own language. While pluralism has recently attracted considerable interest, it has also faced significant criticism. One powerful objection, which can be extracted from Parsons (2008), appeals to a categoricity result to argue against the possibility of seemingly conflicting true arithmetics. Another salient objection raised by Putnam (1994) and Koellner (2009) draws upon the arithmetization of syntax to argue (...) that arithmetical pluralism is inconsistent with the objectivity of syntax. First, we review these arguments and explain why they ultimately fail. We then offer a novel, more sophisticated argument that avoids the pitfalls of both. Our argument combines strategies from both objections to show that pluralism about arithmetic entails pluralism about syntax. Finally, we explore the viability of pluralism in light of our argument and conclude that a stable pluralist position is coherent. This position allows for the possibility of rival packages of arithmetic and syntax theories, provided that they systematically co‐vary with one another. (shrink)

The debate between emergentists and reductionists rests on the observation that in many situations, in which it seems desirable to work with a coherent and unified discourse, key predicates fall into different groups, such that pairs of members one taken from each group, cannot be co-predicated of some common subject. Must we settle for ‘island’ discourses in science and human affairs or is some route to a unified discourse still open? To make progress towards resolving the issue the conditions under (...) which such segregations of predicates seem inexorable must be brought out. The distinction between determinable and determinate properties throws light on some aspects of this problem. Bohr’s concept of complementarity, when combined with Gibson’s idea of an affordances as a special class of dispositional properties is helpful. Several seeming problems melt away, for example, how it is possible for a group of notes to become hearable as a melody. The mind-body problem and the viability of the project of reducing biology to chemistry and physics are two issues that are more difficult to deal with. Are mental phenomena, such as feelings and memories emergent from material systems or are they actually material properties themselves? Are the attributes of living beings emergent from certain accidental but long running collocations of chemical reactions, or are they nothing but chemical phenomena? If emergent, in what way are they distinctive from that from which they emerge? (shrink)

After the demise of Christianity, Western society did not become secular, according to Emile Durkheim, but located foundations in a new religion he calls the “cult of the individual.” This religion holds the rational individual person as sacred, and corresponds to a multi-faceted, complex, and diverse society united around individual democratic rights and modern science. Different traditional religions can co-exist in the cult of the individual, but only if they accept a subordinate status in relation to it. Durkheim maintains, however, (...) that all religions construct authoritative regimes of truth and moral obligations, setting the stage for conflict. How then should modern democracies respond to challenges to their authority from traditional religions? This article argues that a Durkheimian response would be to assert the values of the cult of the individual, as this is the only way to maintain the integrity and viability of Western democratic society. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:TOWARD A THOMISTIC PERSPECTIVE ON ABORTION AND THE LAW IN CONTE:MPORARY AMERICA M. CATHLEEN KAVENY Yale University New Haven, Oonnecticut Introduction W;HEN THE SUPREME COURT handed down its abortion decision Webster v. Reproductive Health Services 1 in the summer of 1989, it was widely prel 109 S. Ct. 3040 (1989). All further citations to Webster will be given parenthetically in the text. To summarize the most significant aspects. of (...) the decision: A. Chief Justice Rehnquist authored an opinion of the Oourt (of the highest precedential value) which was joined by Justices White, Kennedy, Scalia, and O'Connor. The majority found the lower courts to be in error in striking down as unconstitutional the preamble to a Missouri statute which asserted that "the life -0f each human being begins at conception." The opinion of the Court also found that Missouri could constitutionally prohibit the use of public employees and facilities in the performance of abortions not necessary to save the mother's life. B. The Court also upheld the Missouri statute's provision requiring a. doctor to perform viability tests before aborting a fetus the doctor believes is of 20 or more weeks gestational age. In the plurality opinion (of less precedential value than an opinion -0f the Court, since it is not joined by a majority of the justices), Chief Justice Rehnquist, Justice White, and Justice Kennedy argued that since most fetuses are not viable at twenty weeks, the provision would impose substantial restrictions unrelated to the health of the mother upon what are, in fact, simply sec-0nd trimester abortions. Because they believed such restrictions to be in tension with Roe's trimester system, the plurality decided to abandon that system, along with its stipulation that the state's interest in unborn life became compelling only at viability. The plurality contended, however, that Webster presented no occasion for reconsidering Roe's holding, which deemed unconstitutional a statute prohibiting all abortions except those necessary to save the life of the mother. In a concurring opinion, Justice Scalia went further, arguing that the Court should explicitly overrule Roe v. Wade. On the other hand, Justice O'Connor, 848 344 M. CAT'HLEEN KAVENY dieted that this would exaicerbate a dangerously bitter social·struggle. In its 1973 decision Roe v. Wade (410 U.S. 113), the court had e1abo:raJted.a woman's right to abortion, and, in rthe sixteen years that fo11owed it, it ga,V'e that right unwavering support. Webster 'seemed to mark a retl.'eat from that support. The new scope it offered for state regulation of rubortion promised rto ignite gra,ss-roots forvor and a stiate..:by-state battle between those seeking rto maintain the abortion rights est1ab1isihed by Roe and its sequalia and those st:dving to limit the s1oope of these rights in 1 significant ways. Much of the criticism of Webster has fooused narrowly upon how weM the,decision has aiocorided with various views on the morality of abortion. Yet important 1as this issue is, thorough ethicaJ ana:lysis of Webster must address severa1l additional fac~ tors. The ethiicatl aidequacy of positive law, induding judicial interpretations of faw siuch as Webster, must he ev1alruated in terms of whetheir it aidvanices or impedes the common good. The common good requires not only that we consider the moml substance of legal requirements but tha:t we ailso attend to the manner in which law is made, promulgated, ml!d interpreted. Such an analysis is,sorely needed; it should. specify the severa1l factors involved in determining whether any given legal also concurring in the plurality's judgment, maintained that this provision of the statute could be upheld without any reconsideration of Roe, since it co· hered with that decision's recognition of the compelling state interest in viable fetal life. C. Justice Blackmun authored an opinion dissenting from the majority on the issues discussed above, and he was joined by Justices Brennan and Mar· shall. The thrust of his opposition is directed against the plurality's treatment of the viability testing,provisions. Blackmun first suggested that i.f understood according to the canons of proper statutory interpretation, these provisions unconstitutionally restrict the attending physician... (shrink)

Globalisation is often argued to erode differences between national varieties of capitalism and enforce convergence. This article takes up the debate - triggered by declining economic performance - about the viability of the » German model « of a co-ordinated market economy, systematising and summarizing the arguments about its alleged seminal transformation over the last decade. It goes on to identify a number of flaws in the respective literatme and questions whether the case for fundamental change taking place in (...) Germany has really been made in a Iasting and convincing way. In addition it points to significant elements of continuity in areas such as industrial relations and emphasizes the importance of political decisions in determining the fate of national economic models. (shrink)

Open peer commentary on the article “Learning How to Innovate as a Socio-epistemological Process of Co-creation: Towards a Constructivist Teaching Strategy for Innovation” by Markus F. Peschl, Gloria Bottaro, Martina Hartner-Tiefenthaler & Katharina Rötzer. Upshot: Peschl et al. argue that innovation, or the creation of sustainable change in the market, is a natural topic to be understood from a radical constructivist perspective and is similar in structure to von Glasersfeld’s theory of learning. I argue that this is an accurate and (...) interesting extension of the theory, but that their understanding of innovation needs to be extended to consider the viability of the innovation in the market. It is only in the context of the market that the innovation is perceived as novel, or that it can be understood as sustainable. (shrink)

800x600 In our book _Global Insanity_ we argued that the existential predicament faced by humanity is a predictable consequence of Western Enlightenment thinking and the resulting world model, whose ascendance with the Industrial Revolution entrained development of the global consumer Economy that is destroying the biosphere. This situation extends from a dominant mindset based on the philosophy of reductionism. The problem was recognized and characterized by Robert M. Hutchins. In 1985, Hutchins ideas were discussed by Robert Rosen in Chapter 1 (...) of _Anticipatory Systems: Philosophical, Mathematical & Methodological Foundations_._ _Building on Hutchins' ideas, Rosen laid the foundation for an entire new, non-reductionist paradigm, which he called "complexity theory". This new paradigm is what we are further developing here. One has to recognize that a paradigm shift is needed to overcome the entrenched mindset and world model that reductionism has created. Here we explore the myriad interconnected ways-psychological, social, cultural, political, and technological-that the Western world model and consumer economy works as a complex system to thwart, neutralize, or co-opt for its own ends any effort to bring about the kind of radical change that is needed to avert global ecological catastrophe and societal collapse. This resistance to change stems from the need, inherent in the Western model, to continually grow the consumer economy. The media's continued portrayal of consumptive economic growth as a good thing, the widely held belief that the Economy is paramount, and current political and technological trends all manifest the system's active resistance to change. From the perspective of the mature economic system, any work that does not serve to grow the Economy is counterproductive, and viewed as unnecessary, a luxury, or subversive. The potential for real change is thus inversely related to the viability of the Economy, which will eventually decline as the system develops into senescence. To the extent that the fragile metastability of senescence affords opportunity for radical change, economic decline can be viewed as a hopeful sign. But taking maximum advantage of that opportunity will be extraordinarily difficult, as it will require widespread recognition of the problem, major voluntary sacrifice by the relatively large numbers of people who still benefit from the system, and concerted "grassroots" efforts. It can be expected that the system will resist those efforts until the end, becoming increasingly reliant on media-enabled distraction and divisive politics, as well as violent coercion, to maintain itself. Investment in education and science is widely touted as necessary for improving our situation, but this is misguided as long as the educational system and scientific enterprise continue to work in collusion with the larger system, as they currently do. Until the reductionist mindset and world model that drives the system is effectively challenged, there can be little hope for the kind of change needed to avert the catastrophic collapse of civilization. Normal 0 false false false EN-AU X-NONE X-NONE MicrosoftInternetExplorer4. (shrink)

We attempt to quantify and qualify the preferences of consumers for beef with a number of environmental and food quality attributes. Our goal is to evaluate the viability of a proposed food co-operative based in the Wood River watershed of southern Saskatchewan, Canada. The food co-operative was designed to provide a price premium to producers who adopted alternative management practices. In addition, the study evaluated the acceptance of a proposed food co-operative by consumer that had environmental interests as compared (...) to the general population. Conjoint analysis was used to determine the trade-off and relative value of beef with the following production and purchasing characteristics: (a) use of hormones, antibiotics and vaccination in production; (b) method of obtaining the beef including monthly or yearly purchase contracts or a local market; (c) price relative to beef purchased from the local grocery store; and (d) impact on the river ecosystem. Consumers from environmental groups had stronger environmental and food quality preferences than individuals from the general population. However, consumers from both groups expressed a willingness to pay higher prices for food that had these attributes. It was uncertain whether the magnitude of the premium, in combination with a desire not to enter a long-term purchasing commitment, would be large enough to encourage farmers to adopt the alternative management. (shrink)

This article deals with a type of functional explanation, viability explanation, that has been overlooked in recent philosophy of science. Viability explanations relate traits of organisms and their environments in terms of what an individual needs to survive and reproduce. I show that viability explanations are neither causal nor historical and that, therefore, they should be accounted for as a distinct type of explanation.

In this paper, I explore how viability, meaning the ability of the fetus to survive post-delivery, features in the law regulating abortion provision in England and Wales and the USA. I demonstrate that viability is formalized differently in the criminal law in England and Wales and the USA, such that it is quantified and defined differently. I consider how the law might be applied to the examples of artificial womb technology and anencephalic fetuses. I conclude that there is (...) incoherence in the meaning of viability and argue that it is thus a conceptually illegitimate basis on which to ground abortion regulation. This is both because of the fluidity of the concept and because how it has been thus far understood in the law is unsupported by medical realities. Furthermore, it has the effect of heavily diluting pregnant people’s rights with overly moralistic limitations on access to healthcare. (shrink)

Attempts have been made to analyse features in mathematics within a social constructivist context. In this paper we critically examine some of those attempts recently made with focus on problems of the objectivity, ontology, necessity, and atemporality of mathematics. Our conclusion is that these attempts fare no better than traditional alternatives, and that they, furthermore, create new problems of their own.

This article examines the ethical validity of using viability as the cutoff point for abortion in the Netherlands, in view of potential changes to the Dutch perinatal care guideline. According to the Dutch Penal Code, abortion is permitted until viability: the point at which a fetus can survive outside the womb with technological assistance. Since the law was enacted in 1984, viability has been set at 24 weeks gestational age. Currently, in the Netherlands, the treatment limit for (...) extreme prematurity is also set at 24 weeks. The potential revision of the guideline could lower this threshold. Such a change could have implications for abortion in the Netherlands. We critically evaluate the use of viability within the Dutch context and offer recommendations for modifying the legal framework concerning abortion. We conclude that relying on any interpretation of viability is morally problematic for abortion regulation, as it is too indeterminate a concept to establish a threshold in a morally relevant way. (shrink)

Contributed articles on modern philosophy, Saiva Siddhanta and Cō. Kiruṣṇarājā.

The emergence of new obstetrical and neonatal technologies, as well as more aggressive clinical management, has significantly improved the survival of extremely low birth weight infants. This development has heightened concerns about the limits of viability. ELBW infants, weighing less than 1,000 grams and no larger than the palm of one's hand, are often described as of late twentieth century technology. Improved survivability of ELBW infants has provided opportunities for long-term follow-up. Information on their physical and emotional development contributes (...) to developing standards of practice regarding their care. (shrink)

Tychastic viability is defined in an uncertain dynamical framework and used for providing a “viability risk eradication measure”, first, by delineating the set of initial conditions from which all evolutions satisfy viability constraints, second, for the other “risky” initial states, by introducing their duration index. This approach provides an alternative to the stochastic representation of chance and these two measures replace the statistical measures (expectation, variance, etc).

We study the viability domains of bio-economic constraints for fishing model of hermaphrodite population, displaying three stages, juvenile, female and male. The dynamic of this model is subject to two constraints: an ecological constraint ensuring the stock perennity, and an economic constraint ensuring a minimum revenue for fishermen. Using viability kernel, we find out a viability domain which simultaneously guarantees a minimum stock level and a minimum income for fleets.

This essay deals critically with Nietzsche’s anthropological typology of the “free spirit par excellence”, “we spirits”, persons endowed with positive as against negative power patterns, and the ideal of the Übermensch. The conclusions are twofold. The first is that actually it was not Nietzsche’s ideal of the Overman that was the pinnacle of his anthropological philosophy, but the even more ideal type of the “free spirit par excellence”. The second conclusion is that it is impossible to envisage a society consisting (...) of such “free spirits”. This thesis is highlighted by contrasting the society of Übermenchen, who, according to Nietzsche, might live in society and even need it as a sine qua non for their cultivation, with free spirits par excellence, who are by definition free from any social ethos, and hence impossible within its framework. However, I argue that, on Nietzsche’s terms, the ideal of the Übermench is also not viable in society. Hence this essay points to an inherent flaw ofNietzsche’s existential philosophy -- thenon-viability of its most sublime ideals. (shrink)

On the basis of three empirical assumptions about the rhythm method and the viability of embryos, Bovens concludes that the pro-life position regarding empbryos implies that it is prima facie wrong to use the rhythm method. Pruss objects to Bovens's philosophical presuppositions and Kennedy to his empirical premises. This essay defends two revised versions of Bovens's argument. These arguments revise Bovens's empirical assumptions in response to Kennedy and, in response to Pruss, supplement Bovens's argument with what I call ‘the (...) principle of parental care’. (shrink)

Abstract This work is about the viability domain corresponding to a model of fisheries management. The dynamic is subject of two constraints. The biological constraint ensures the stock perennity where as the economic one ensures a minimum income for the fleets. Using the mathematical concept of viability kernel, we find out a viability domain which simultaneously enables the fleets to exploit the resource, to ensure a minimum income and stock perennity. Content Type Journal Article Category Regular Article (...) Pages 1-19 DOI 10.1007/s10441-012-9153-5 Authors C. Sanogo, LIRNE, Mathmatics Engineering Team, Ibn Tofail University, Kenitra, Morocco S. Ben Miled, ENIT-LAMSIN, Tunis el Manar University, Tunis, Tunisia N. Raissi, LAA, Mohamed V University, Rabat, Morocco Journal Acta Biotheoretica Online ISSN 1572-8358 Print ISSN 0001-5342. (shrink)

This work presents a stock/effort model describing both harvested fish population and fishing effort dynamics. The fishing effort dynamic is controlled by investment which corresponds to the revenue proportion generated by the activity. The dynamics are subject to a set of economic and biological state constraints. The analytical study focuses on the compatibility between state constraints and controlled dynamics. By using the mathematical concept of viability kernel, we reveal situations and management options that guarantee a sustainable system.

"Contra la postmodernidad" entabla una polémica con las principales contribuciones políticas, sociológicas y filosóficas de los últimos tiempos. Comparecen ante el tribunal pensadores como Zygmunt Bauman, Anthony Giddens, Agnes Héller, Toni Negri, Simon Critchley, Gianni Vattimo, Eloy Fernández Porta y Jean-François Lyotard, entre otros. Se discuten las falacias de la economía neoclásica, el fetichismo de la alteridad radical y la retórica de la diferencia. A esto se añade una ardua polémica con aquella forma de filosofía obsesionada con el suicidio de (...) la razón, la muerte de la metafísica y la superación de la Modernidad. También se debate sobre la crisis del proyecto europeo y sobre movimientos sociales recientes como el 15-M o la primavera árabe. La tesis principal del libro afirma que la postmodernidad hace tiempo que llegó a su fin, sus categorías no son aplicables a un tiempo como el nuestro, marcado por una grave crisis económica, ecológica y social. Asistimos al regreso de la lucha de clases, la geopolítica, las estrategias neocoloniales, el populismo y el fundamentalismo étnico, cultural y religioso. En este contexto de grandes transformaciones, la apuesta normativa del postmodernismo resulta intelectualmente muy pobre y políticamente inútil. El afán por las cuestiones culturales e identitarias lleva a que muchos de sus autores olviden deliberadamente el análisis económico del sistema. Por este motivo, el postmodernismo resulta ser, en la mayor parte de los casos, una réplica exacta de la ideología neoliberal. (shrink)