This study examines the theory of media systems and the models offered by Hallin and Mancini (2004) by focusing on critical junctures in which changes occur. Based on critical political economy and historical institutionalism, we analyzed the Israeli media system transition in the 1980s and early 1990s, seeking to understand the nature of this change and its theoretical implications. Our findings show a combination of government, market, and public forces in a unique situation where political, economic, and social (...) circumstances change. Accordingly, we conclude that a distinction between politics and economy, as the media system theory and, specifically, the liberal model suggests, is invalid under neoliberalism. We argue that research attention should be paid to critical junctions, and that a closer analysis of government and market interrelations can enrich theories of media systems. (shrink)

Large increases unofficial economies in many transition economies arise from a dynamic interaction with rising income inequality and public sector changes in multiple equilibria system. Returns to unofficial activity are first increasing and then decreasing, implying two distinct stable equilibria, with changes in inequality possibly causing a jump from one to the other. Multiple regressions of data from 18 transition economies find income inequality significantly correlated with the size of the unofficial economy, with the maximum annual rate (...) of inflation also significantly correlated. The latter appears to be the only significant correlate with the increase in the size of the unofficial economy. (shrink)

The Malaysian electoral behaviour has for some time reflected the thesis. Since 1999, however, there has been a marked shift towards . Analyses of electoral and survey data reveal that although a significant number of Malaysian voters remained attached to the party they identified with, most of the electorate, however, are swayed by short-term factors. Though the economic issues played a role in the three elections, it is the leadership of the parties supplemented by the use of mass media that (...) played a significant role in swinging the vote from one party to the other. The three elections in 1999, 2004, and 2008 can be categorized as evidence of secular dealignment: the 1999 elections substantially reduced the margin of gain by the ruling coalition; the 2004 elections reversed the opposition gain, while the 2008 elections resulted in the loss of two-thirds majority seats in the parliament habitually enjoyed by the ruling coalition and the emergence of a strong opposition coalition. This trend not merely continued but was much more stronger in the 13th Malaysian general election. (shrink)

The transition towards sustainable and just food systems is ongoing, illustrated by an increasing number of initiatives that try to address unsustainable practices and social injustices. Insights are needed into what a just transition entails in order to critically engage with plural and potentially conflicting justice conceptualisations. Researchers play an active role in food system transitions, but it is unclear which conceptualisations and principles of justice they enact when writing about food system initiatives. To fill this (...) gap this paper investigates: Which conceptualisations of justice emerge from the literature related to food system initiatives and which principles of justice do authors use? We developed an initial framework for which we drew on political philosophy literature. We then undertook an extensive review of the food system transitions literature using this framework and were able to identify a range of recognition, distributive, and procedural justice conceptualisations and associated principles of justice. Recognised as subjects of justice were those with a particular role in the food system, people who are marginalised, Indigenous communities, those with experiences of negative consequences of the food system, future generations, and nonhumans. The identified conceptualisations and the developed framework can be used by those involved in food system initiatives to reflect on how they conceptualise justice. We challenge them to be more explicit about who they do and do not recognise as subjects of justice and which principles of justice they use. Such clarity is needed to reflexively enact a just transition towards sustainable and just food systems. (shrink)

In the present context of intertwined and intensifying economic, environmental and climate challenges and crisis, we need to enlarge our thinking about food systems change. One way to do so is by considering intersections between our longstanding interdisciplinary interest in food and agriculture and new scholarship and practice centered on transitions to sustainability. The general idea of transition references change in a wide range of fields and contexts, and has gained prominence most recently as a way to discuss and (...) address sustainability challenges. To explore connections to food systems change, I highlight two broad approaches in the sustainability transitions research field. First is a multi-level perspective that examines sustainability innovation pathways and second is a social practices approach that illuminates the possibilities for shifts in normal everyday routines and practices. Taken together, these approaches offer different and useful ways to think about the dynamics, durability and significance of innovations in food and agriculture, and the part they play in transitions to sustainability. Numerous opportunities exist to forge more productive links between work on food systems change and the broad and growing sustainability transitions field. First, our research and practice insights about the importance of politics, governance, values and ethics in food and agriculture could help to strengthen the sustainability transitions field, which initially underplayed such questions. Second, the sustainability transitions field’s implicit systems sensibility and its futures orientation could help to widen the scope of inquiry and the contribution to policy and planning of research and practice on food systems change. (shrink)

Large increases unofficial economies in many transition economies arise from a dynamic interaction with rising income inequality and public sector changes in multiple equilibria system. Returns to unofficial activity are first increasing and then decreasing, implying two distinct stable equilibria, with changes in inequality possibly causing a jump from one to the other. Multiple regressions of data from 18 transition economies find income inequality significantly correlated with the size of the unofficial economy, with the maximum annual rate (...) of inflation also significantly correlated. The latter appears to be the only significant correlate with the increase in the size of the unofficial economy. (shrink)

Food retailers are powerful actors of the agro-industrial food system. They exert strong lock-in effects that hinder transitions towards more sustainable agri-food systems. Indeed, their marketing practices generally result in excluding the most sustainable food products, such as local, low-input, small-scale farmers’ products. Recently in Belgium, several initiatives have been created to enable the introduction of local products on supermarket shelves. In this article, we study three of those initiatives to analyse if the development of local sourcing in supermarkets (...) opens up an opportunity for a transition towards more sustainable agri-food systems. We conceptualise transitions as a shift in governance and ethical values and adopt a pragmatist approach of ethics combined with the systemic perspective of transition studies, to evaluate the impact of these initiatives. Our analysis shows that they mainly contribute to the reproduction of the incumbent agri-food system. It also highlights that first, to be a driver for sustainability transitions, food ethics need to be systemic i.e. relate to a systemic understanding of problems and perspective of sustainability, including social justice. And second, it highlights that governance arrangements involving not only representative organisations of the various agri-food and non-agricultural actors, but also actors upholding ethical values that are currently missing in conventional supply chains and representing excluded and marginalised interests, favour the uptake of such systemic ethics by incumbent actors. Hence, systemic ethics and inclusive governance are key features for initiatives to contribute to a sustainability transition. (shrink)

We extend the comparatively simple processes of group symmetry-breaking in physical systems to groupoid/equivalence class phase transitions characterizing adiabatically, piecewise stationary, information transmission in prebiotic, biological, and social phenomena: High vs. Low probability paths $$\rightarrow$$ Interior and Exterior Interact $$\rightarrow$$ Multiple Interacting Tunable Workspaces Application to nonstationary processes seems possible via generalizations of the symmetry algebra, for example, to semigroupoids. The dynamic probability models explored here can be transformed into statistical tools for the analysis of real-time and other data across (...) a spectrum of important disciplines confronted by biological and other forms of cognition and their dysfunctions. (shrink)

Labeled transition systems are key structures for modeling computation. In this paper, we show how they lend themselves to ordinary logical analysis (without any special new formalisms), by introducing their standard first-order theory. This perspective enables us to raise several basic model-theoretic questions of definability, axiomatization and preservation for various notions of process equivalence found in the computational literature, and answer them using well-known logical techniques (including the Compactness theorem, Saturation and Ehrenfeucht games). Moreover, we consider what happens to (...) this general theory when one restricts attention to special classes of transition systems (in particular, finite ones), as well as extended logical languages (in particular, infinitary first-order logic). We hope that this puts standard logical formalisms on the map as a serious option for a theory of computational processes. As a side benefit, our approach increases comparability with several other existing formalisms over labeled transition systems (such as Process Algebra or Modal Logic). We provide some pointers to this effect, too. (shrink)

Labeled transition systems are key structures for modeling computation. In this paper, we show how they lend themselves to ordinary logical analysis (without any special new formalisms), by introducing their standard first-order theory. This perspective enables us to raise several basic model-theoretic questions of definability, axiomatization and preservation for various notions of process equivalence found in the computational literature, and answer them using well-known logical techniques (including the Compactness theorem, Saturation and Ehrenfeucht games). Moreover, we consider what happens to (...) this general theory when one restricts attention to special classes of transition systems (in particular, finite ones), as well as extended logical languages (in particular, infinitary first-order logic). We hope that this puts standard logical formalisms on the map as a serious option for a theory of computational processes. As a side benefit, our approach increases comparability with several other existing formalisms over labeled transition systems (such as Process Algebra or Modal Logic). We provide some pointers to this effect, too. (shrink)

Industrial agriculture has extensive environmental and social costs, and efforts to create alternative farming systems are widespread if not yet widely successful. This study explored how a set of grain farmers and rotational graziers in Iowa transitioned to agroecological management practices. Our focus on the resources and strategies that farmers mobilized to develop opportunities for, and overcome barriers to, transitioning to alternative practices allows us to go beyond the existing literature focused on why farmers transition. We attend to both (...) the ecological and socioeconomic context of innovation by comparing processes of technical change in two contrasting regions of Iowa. Farmers cultivated farm-level biodiversity and enterprise diversity, developed new cognitive and psychological competencies, and overcame barriers to innovation by developing external network linkages with peers, knowledge organizations, and federal policies. Our research provides insights into how biophysical, cognitive, structural and market considerations can be integrated into research efforts that aim to make sense of innovation toward sustainable agriculture. (shrink)

A new conceptual framework is proposed to situate and integrate the parallel theories of Turchin, Powers, Campbell and Simon. A system is defined as a constraint on variety. This entails a 2 × 2 × 2 classification scheme for “higher‐order” systems, using the dimensions of constraint, (static) variety, and (dynamic) variation. The scheme distinguishes two classes of metasystems from supersystems and other types of emergent phenomena. Metasystems are defined as constrained variations of constrained variety. Control is characterized as a (...) constraint exerted by a separate system. The emergence of hierarchical systems is motivated by evolutionary principles. The positive feedback between variety and constraint, which underlies the “branching growth of the penultimate level,” leads to the interpretation of metasystem transitions as phases of accelerated change in a continuous evolutionary progression toward increasing variety. The most important MSTs in the history of evolution are reinterpreted in this framework: mechanical motion, dissipative structuration, life, multicellular differentiation, sexuality, simple reflex, complex reflex, associating, thinking, metarationality and social interaction. (shrink)

Vedānta is one of the oldest philosophical systems. While there are many detailed commentaries on Vedānta, there are very few mathematical descriptions of the different concepts developed there. This article shows how ideas from theoretical computer science can be used to explain Vedānta. The standard ideas of transition systems and modal logic are used to develop a formal description for the different ideas in Vedānta. The generality of the formalism is illustrated via a number of examples including saṃsāra, Patañjali’s (...) Yogasūtras, karma, the three avasthās from the Māṇḍūkya Upaniṣad and the key difference between advaita and dvaita in relation to mokṣa. (shrink)

For society to achieve the Sustainable Development Goals, the agri-food industry needs a substantial sustainability transition toward food systems capable of delivering greater volumes of nutritious food, while simultaneously lowering the environmental footprint. This issue of AHV focuses on the big picture—on mechanisms of sustainability transition, from social innovation, to models of finance and institutional systems, and calls for business and agricultural researchers to transform the sector together. Contributors to this issue embrace a transdisciplinary outlook, including scientific, technical, (...) social and political dimensions of agroecology. This issue is a call to action: to encourage the community of social entrepreneurs, ecosystem players and researchers to contribute analytical methods, experiences and scientific insights on emerging social innovations related to food, agriculture and rural–urban transformation. (shrink)

There is a danger that transition becomes a concept that aids the official reality of a school or education system to mask the unofficial system difficulties. This article distinguishes fou...

The design and analysis of norms is a somewhat neglected topic in AI and Law, but this is not so in other areas of Computer Science. In recent years powerful techniques to model and analyse norms have been developed in the Multi-Agent Systems community, driven both by the practical need to regulate electronic institutions and open agent systems, and by a theoretical interest in mechanism design and normative systems. Agent based techniques often rely heavily on enforcing norms using the software (...) to prevent violation, but I will also discuss the use of sanctions and rewards, and the conditions under which compliance by autonomous agents (including humans) can be expected or encouraged without sanctions or rewards. In the course of the paper a suggested framework for the exploration of these issues is developed. (shrink)

Government-sponsored school lunch programs have garnered attention from activists and policymakers for their potential to promote public health, sustainable diets, and food sovereignty. However, across country contexts, these programs often fall far short of their transformative potential. It is vital, then, to identify policies and organizing strategies that enable school lunch programs to be redesigned at the national scale. In this article, we use document analysis of historical newspapers and government data to examine the motivating factors and underlying conditions that (...) allowed South Korea’s universal free, eco-friendly school lunch program to become a tool for advancing social justice and ecological goals at the national scale. We analyze the socio-historical evolution and current status of the Korean school lunch program, combining the multi-level perspective with insights from environmental sociology and critical food studies, in order to shed light on the factors that enabled the program to become an innovative niche and articulate the opportunities and challenges it now faces. We identify the state-sponsored creation of what we call “precautionary infrastructure” as a key anchoring mechanism between the school food niche and agri-food regime. Precautionary infrastructure includes new supply chains, certification standards, and sourcing policies that provide a stable market for eco-friendly farms and small-scale producers, while minimizing the environmental health risks of school lunch by delivering organic and pesticide-free ingredients to on-site kitchens that serve free lunches to all students. This analysis offers insight into how public school-lunch programs can become protected niches that help drive sustainability transitions within agri-food systems. (shrink)

Da Costa's paraconsistent systems of the series Cm (for finite m) (see [C1], [C2], and esp. [C3], pp. 237ff.) share important features with transitive logic, TL (which has been gone into in [P1] and [P2]), namely, they all coincide in that: (c1) they possess a strong negation, `¬', a conditional, `⊃', a conjunction, `∧', and a disjunction, `∨', with respect to which they are conservative extensions of CL or Classical Logic; (c2) they possess a non strong negation, `N' (notations are (...) different for systems C) which does not possess all properties of classical negation, but for which the following schemata are theorematic (I use the letters `p', `q', etc as schematic letters; my notational conventions are basically Church's: associativity leftwards; a dot stands for.. (shrink)

In this paper, the nonsmooth compound transmission control protocol with the gentle random early detection system with the state-dependent round-trip delay is investigated in detail. Uniqueness of the positive equilibrium is proved firstly. Then, the closed approximate periodic solutions in this state-dependent delayed nonsmooth compound TCP with the GRED model are obtained by employing the harmonic balance and alternating frequency/time domain method. Then, we compare the results generated by numerical simulations with those of the closed approximate expressions obtained by (...) HB-AFT. It indicates that HB-AFT is simple, correct, and powerful for state-dependent delayed nonsmooth dynamical systems. Finally, we find the complicated dynamic: chaos. It is a grazing chaos with a hybrid property, i.e., where usually w oscillates at a very low frequency and q oscillates at a very high frequency. And, the route to chaos is a very rare route, i.e., the instantaneous and local transition of stable equilibrium to chaos. So, to the end of stability and good performance, we should adjust the parameters carefully to avoid the periodic and chaotic oscillations. (shrink)

Transition systems can be viewed either as process diagrams or as Kripke structures. The rst perspective is that of process theory, the second that of modal logic. This paper shows how various formalisms of modal logic can be brought to bear on processes. Notions of bisimulation can not only be motivated by operations on transition systems, but they can also be suggested by investigations of modal formalisms. To show that the equational view of processes from process algebra is (...) closely related to modal logic, we consider various ways of looking at the relation between the calculus of basic process algebra and propositional dynamic logic. More concretely, the paper contains preservation results for various bisimulation notions, a result on the expressive power of propositional dynamic logic, and a de nition of bisimulation which is the proper notion of invariance for concurrent propositional dynamic logic. (shrink)

During the Soviet period, the microelectronics industry in the former Soviet Union (FSU) owed its existence to the political and military objectives of the Communist Party. Consequently, investment in the industry was planned to meet the security needs of the Cold War international environment. Since the breakup of the Soviet Union, there has been a reduction in emphasis away from the mass production of electronic devices suited to military and defense needs. The emergence of a huge rise in consumer demand (...) for non-Soviet electronic goods has prompted a fundamental shift in production regimes to meet civilian, customer demands rather than military, political objectives. The electronics industry is being re-created because its original raison d’être has disappeared. In the process, many issues facing other sectors and countries during the transition are borne out. This article assesses the potential for innovation in the microelectronics sector in the FSU. (shrink)

Problematic is probably the best way to describe journalism ethics in societies experiencing deep and rapid institutional change. Although it might be desirable to inculcate ethics in the early stages of press transition, reality suggests fundamental needs, including necessary materials and economic viability, come first. Using Romania as a case study, we interviewed news officials about ethical behavior as well as related issues. Clearly, concern with mere survival supersedes concern over ethics. If, as proposed here, press changes proceed in (...) stages along the lines of a hierarchical order of needs, then we should be careful comparing ethical behavior across differing press systems and imposing our own standards. (shrink)

Hegel’sLogicargues in a manner that is supposed to support a systematic philosophy. But it is difficult to explain how such a systematic argument is supposed to work. For answers, I look to the key transition from the Doctrine of Essence to the Doctrine of the Concept. Here we find discussions of both Spinozist and Kantian systems of philosophy: both are supposed to be helpful, and yet also to be lacking in instructive ways. So the initial hope is that these (...) comparisons can help us to understand Hegel’s own systematic argument, and what it means to transition from an objective to a ‘Subjective Logic’. But the comparisons bring additional difficulties. First, to defend a comprehensive system involves refuting rivals, and the discussion of Spinoza demonstrates that refutation is difficult. Second, it is hard to see how any argument for Hegel’s system could be akin to those in Spinoza and Kant given the extent of the differences between them. I argue that the best way to deal with these difficulties is to explain the systematic argument of theLogicas modelled on the Transcendental Dialectic of Kant’s firstCritique. (shrink)

Despite recent critiques of agrofuels, the industry is booming, signaling transformations in the world's food and fuels systems. International financial institutions, biotechnology firms, governments, and agribusiness are restructuring control over land, genetic resources, economic space, and market power. These moves prefer transnational capital at the expense of farmers in the North and extensive areas vital to the livelihoods of small producers in the Global South. This article suggests that the agrofuels boom may be a new—and particularly destructive—stage in industry's extractive (...) transformations of agriculture. The movement-based logic of food sovereignty—people's right to define their own food and agriculture systems—suggests a rollback of the “agrofuels transition” is possible. (shrink)

This paper presents an in-depth analysis of the anatomy of both thermodynamics and statistical mechanics, together with the relationships between their constituent parts. Based on this analysis, using the renormalization group and finite-size scaling, we give a definition of a large but finite system and argue that phase transitions are represented correctly, as incipient singularities in such systems. We describe the role of the thermodynamic limit. And we explore the implications of this picture of critical phenomena for the questions (...) of reduction and emergence. (shrink)

Increased pressures on agri-food systems have indicated the importance of intermediaries to facilitate sustainability transitions. While producer organizations are acknowledged as intermediaries between individual producers and other food system actors, their role as sustainability transition intermediaries remains understudied. This paper explores the potential of producer organizations as transition intermediaries to support producers in their needs to adopt sustainable production practices. Ten cases of producer organizations in conventional (regime) and organic (niche) vegetable systems in Uruguay were studied qualitatively. (...) Findings show that the classic intermediary roles that producer organizations fulfil in food systems also address the needs of producers in their transition to sustainable food systems. By providing organic inputs, organizing access to output markets, sharing knowledge, and facilitating sustainable production practices, producer organizations support producers within and across regime and niche. Producer organizations mostly function as implicit transition intermediaries, facilitated by their legitimacy among producers, their embeddedness in rural networks, and by refraining from taking a strong normative position. Producer organizations have the potential to be more explicit transition intermediaries, however this position comes with limitations. We provide policy recommendations to optimize the transition intermediary potential of producer organizations in their facilitation towards sustainable food systems. (shrink)

(1990). Ethology, power, possession: A system theoretical study of the Hungarian transition. World Futures: Vol. 29, Transition in Eastern Europe, pp. 107-122.

The authors of the two main articles in this supplement recognize the enormous potential of learning health care systems. Their first article argues that the development of these systems calls into question existing guidelines and practices that treat clinical care and clinical research as distinct activities. Their second article proposes to replace this traditional approach with a new framework, one intended to promote two important goals: support the transformation to a learning health care system and help to ensure the (...) ethical appropriateness of the activities carried out within such a system. To promote these goals, the authors propose a framework consisting of seven obligations. The authors are aware that their framework does not provide much guidance for promoting their second goal. At first glance, the seven obligations also might appear to offer little in the way of promoting the first goal. In what way, then, is the proposed framework novel and transformative, as the authors claim? The answer appears to lie largely in how the authors interpret the sixth obligation in the framework—the obligation to conduct learning activities. (shrink)

The role of foundation with respect to transitive closure in the Zermelo system Z has been investigated by Boffa; our aim is to explore the role of antifoundation. We start by showing the consistency of "Z antifoundation transitive closure" relative to Z (by a technique well known for ZF). Further, we introduce a "weak replacement principle" (deductible from antifoundation and transitive closure) and study the relations among these three statements in Z via interpretations. Finally, we give some adaptations for (...) ZF without infinity. (shrink)

In this paper, we give a step by step introduction to the theory of well quasi-ordered transition systems. The framework combines two concepts, namely (i) transition systems which are monotonic wrt. a well-quasi ordering ; and (ii) a scheme for symbolic backward reachability analysis. We describe several models with infinite-state spaces, which can be analyzed within the framework, e.g., Petri nets, lossy channel systems, timed automata, timed Petri nets, and multiset rewriting systems. We will also present better quasi-ordered (...) transition systems which allow the design of efficient symbolic representations of infinite sets of states. (shrink)

In this fourth paper in a series on stochastic electrodynamics (SED), the harmonic oscillator-zero-point field system in the presence of an arbitrary applied classical radiation field is studied further. The exact closed-form expressions are found for the time-dependent probability that the oscillator is in the nth eigenstate of the unperturbed SED Hamiltonian H 0 , the same H 0 as that of ordinary quantum mechanics. It is shown that an eigenvalue of H 0 is the average energy that the (...) oscillator would have if its wave function could be just the corresponding eigenstate. The level shift for each unperturbed eigenvalue is found and shown to be unobservable for a different reason than in the corresponding QED treatment. Perturbation theory is applied to the SED Schrödinger equation to derive first-order transition rates for spontaneous emission and resonance absorption. The results agree with those of quantum electrodynamics, but the mathematics is strikingly different. It is shown that SED demands discarding the ideas of quantized energies, photons, and completeness of the Schrödinger equation, Finally, an intuitive physical SED model is suggested for the photoeffect and for Clauser's (2) coincidence experiment. (shrink)

This paper represents one of the first critical social science interrogations of an agrifood just-in-case transition. The just-in-case transition speaks to a philosophy that values building buffers and flexibility into longer value chains to make them more resilient to shocks, which stands in contrast to the just-in-time philosophy with its emphasis on long, specialized, and often inflexible networks. Influenced by COVID-related disruptions and climate change induced uncertainties, the just-in-case transition examined here centers on the heightened interest in (...) vertical farm-anchored supply chains. Interviewing actors responsible for promoting vertical farm-anchored local supply chains in the US and Canada, I attempt to sketch out how these spaces, infrastructures, and practices care. Put differently, as understood through a feminist ethics of care, _whom_ and _what_ are cared for and _how_ is care practiced in these just-in-case transitions and _why_? Enumerative politics was observed in the data—the idea that we can make care count. Practices and discourses linked to infrastructural/supply chain transitions are highlighted that result in care being narrowly conceived as a technical or transactional matter. The paper concludes reflecting on what it means to afford just-in-case agrifood transitions animated by matters of care that hold greater emancipatory potentials. (shrink)

There are very significant conceptual links between theories of social macroevolution and theories of the World System development. It is shown that the growth of the World System complexity and integrity can be traced through a system of phase transitions of macroevolution. The first set of phase transition is connected with the agrarian, industrial, and information-scientific revolutions (that are interpreted as changes of “production principles”). The second set consists of phase transitions within one production principle. These (...) phase transitions are analyzed on the basis of the World System urbanization dynamics, but they can be traced with respect to the other (cultural, economic, technological, demographic, political, etc.) dimensions of the World System development. (shrink)

In this paper we describe an approach to practical reasoning, reasoning about what it is best for a particular agent to do in a given situation, based on presumptive justifications of action through the instantiation of an argument scheme, which is then subject to examination through a series of critical questions. We identify three particular aspects of practical reasoning which distinguish it from theoretical reasoning. We next provide an argument scheme and an associated set of critical questions which is able (...) to capture these features. In order that both the argument scheme and the critical questions can be given precise interpretations we use the semantic structure of an Action-Based Alternating Transition System as the basis for their definition. We then work through a detailed example to show how this approach to practical reasoning can be applied to a problem solving situation, and briefly describe some other previous applications of the general approach. In a second example we relate our account to the social laws paradigm for co-ordinating multi-agent systems. The contribution of the paper is to provide firm foundations for an approach to practical reasoning based on presumptive argument in terms of a well-known model for representing the effects of actions of a group of agents. (shrink)

In a 1798 letter to Christian Garve, Kant claims that without a transition [Übergang] from the metaphysical foundations of natural science to physics there will be a ‘gap’ in the Critical philosophy. He does not make clear, however, exactly what this gap is or how the transition is supposed to fill the gap. The Übergang section of Kant's Opus postumum has received considerable attention of late due to the many drafts it contains of Kant's Ether Deduction. Commentators have (...) also hoped to find a solution there to the gap problem. Little attention has been paid, however, to Kant's project in Convolut 10 of the OP which he began in August 1799 immediately after completing the Übergang section. Assuming that the Ether Deduction is sound and proves a priori the existence of a transcendental material condition for experience, Convolut 10 discusses what changes would have to be made to the transcendental formal conditions of experience in their empirical function given the addition of this transcendental material condition. Kant claims in Convolut 10 that these changes are necessary to finally effect a transition from the metaphysical foundations of natural science to physics and, as I will argue, such a transition will be tantamount to bridging the gap in the Critical philosophy mentioned in the letter to Garve. (shrink)

The transition of gene switch induced by external noises and external signals is investigated in the genetic regulatory system. Results show that the state-to-state transition of gene switch as well as resonant behaviors, such as the explicit coherence resonance, implicit coherence resonance and control parameter coherence biresonance, can appear when noises are injected into the genetic regulatory system. The ECR is increased with the increase of the control parameter value when starting from the supercritical Hopf bifurcation (...) parameter point, and there exists a critical control parameter value for the occurrence of ECR. However, the ICR is decreased as the control parameter value is increased when starting from the subcritical Hopf bifurcation point. In particular, the coherence of ECR is higher and more sensitive to noise than that of ICR. When an external signal is introduced into the system, the enhancement or suppression of the CPCBR and the number of peaks strongly depend on the frequency and amplitude of the external signal. Furthermore, the gene regulation system can selectively enhance or decrease the noise-induced oscillation signals at preferred frequency and amplitude of an external signal. (shrink)

We introduce new proof systems G[β] and G ext[β], which are equivalent to the standard equational calculi of λβ- and λβη- conversion, and which may be qualified as ‘analytic’ because it is possible to establish, by purely proof-theoretical methods, that in both of them the transitivity rule admits effective elimination. This key feature, besides its intrinsic conceptual significance, turns out to provide a common logical background to new and comparatively simple demonstrations—rooted in nice proof-theoretical properties of transitivity-free derivations—of a number (...) of well-known and central results concerning β- and βη-reduction. The latter include the Church–Rosser theorem for both reductions, the Standardization theorem for β- reduction, as well as the Normalization (Leftmost reduction) theorem and the Postponement of η-reduction theorem for βη-reduction. (shrink)

The agroecological transition of agriculture not only requires changes in practices but also in ways of thinking and in their underlying values. Agroecology proposes broad scientific principles that need to be adapted to the singularities of each farm. This contextualization leads to the identification of agroecological practices that work locally and could serve as evidence-based practices to be transferred to local practitioners. This strategy was tested in a 4-year experiment conducted with dairy-sheep farmers in the South of France. The (...) aim was to collectively engage in the agroecological transition. Our work focused on the creation of a diagnostic tool that was used to analyze local farms and identify virtuous practices to be promoted locally as evidence-based practices. But this strategy came up against the complexity and singularity of the situations to be transformed: not only was no evidence found but the construction of the diagnostic tool itself led to controversy concerning the models of agriculture to be promoted. The experiment then took a pragmatic turn: on-farm workshops were organized to enable farmers to benefit from the professional judgment of peer farmers who were willing to help their colleagues accomplish their agroecological transition. The diagnostic tool, which was designed to be prescriptive, was then used to judge the social acceptability of solutions that made sense in each farmer’s own situation. Our experiment led us to conclude that managing the agro-ecological transition of farmers and their farming system is better conceived as a value-based process than as an evidence-based one. (shrink)