Large-scale land acquisition (LaSLA) in developing countries is discussed controversially in both the media as well as academia: Opponents point to negative social and environmental consequences. By contrast, proponents conceive of LaSLA as much needed investment into the formerly neglected agricultural sector. This contribution aims at analyzing LaSLA’s environmental dimension against the background of strong sustainability. To this end, I will first introduce sustainable development as a normative concept based on claims for intra- and intergenerational justice. Subsequently, (...) I will argue in favor of a conception of strong sustainability and employ this conception in developing guidelines for the sustainable handling of natural capital. By outlining the main drivers and consequences of LaSLA, the contribution hopes to demonstrate that proponents conceive of LaSLA as a potential solution to several sustainability problems, notably answering growing worldwide demand for agricultural commodities by increasing agricultural yields, substituting agrofuels for fossil fuels and providing acreage for offsetting carbon emissions. Against this background I argue that if LaSLA causes environmental externalities, it actually increases the problems it is supposed to resolve. Thereby, I develop sustainability criteria in regard to LaSLA’s environmental consequences. (shrink)

Commercial interest in land (large-scale land acquisition, LaSLA) in developing countries is a hot topic for debate and its potential consequences are contentious: proponents conceive of it as much needed investment into the formerly neglected agricultural sector while opponents point to severe social and environmental effects. This contribution discusses, if and how sustainability standards and codes of conduct can contribute towards governing LaSLA. Based on the WCED-definition we develop a conception of sustainability that allows framing potential (...) negative effects as issues of intra- and intergenerational justice. In a second step we specify these claims of justice, drawing on a human rights approach as well as three guidelines for sustainable development, namely, efficiency, consistency and resilience, to arrive at six guidelines for social and environmental sustainability criteria of LaSLA. We compare our suggestions with existing proposals for sustainability standards of LaSLA and with the certification schemes for sustainable production of bioenergy. From this we draw lessons for development and implementation of sustainability standards for LaSLA. (shrink)

Large-scale land acquisitions (LaSLA), otherwise ‘land grabbing’ in Sub-Saharan Africa (SSA), raise difficult normative questions the current literature does not sufficiently explore. LaSLA is associated with development opportunities; however, it also threatens the well-being of local people because of displacement and dispossession. To investigate the processes and outcomes for LaSLA to be considered as ‘just and fair,’ we evaluate the impacts of a LaSLA project on local livelihoods in Tanzania. Specifically, we apply John Rawls’ Theory (...) of Justice to the project and compare the results with empirical insights gained from our fieldwork. We find that LaSLA has the potential to improve the living standards of local people, we cannot consider LaSLA as just and fair because it contradicts Rawls’s principles of justice and deteriorates the livelihoods of local people. Our findings suggest that it is critical to scrutinize LaSLA investments, involve local people in decision-making, and build the capacity of host governments to negotiate better LaSLA deals. (shrink)

Proponents of large-scale land acquisitions (LaSLA) argue that poor countries could benefit from foreign direct investment in land (World Bank 2011), while opponents argue that LaSLA is nothing more than neo-colonial theft of poor peasants’ livelihoods, i.e., land grabbing (Borras and Franco in Yale Hum Rights Dev L J, 13: 507–523, 2010a). To ensure responsible agricultural investments (RAI), a voluntary “code of conduct” for land acquisitions has been proposed by the World Bank (...) (2011) and the FAO (2012). A critical reaction to the “code of conduct” approach is the proposal for a set of minimum human rights principles, suggested by the UN Special Rapporteur on the Right to Food, De Schutter (2009). Even more critical of the “code of conduct” approach are Borras and Franco in Yale Hum Rights Dev L J, 13(2): 507–523, 2010a, who propose empowering small-scale farmers by giving them land sovereignty so that they are assured control over their land. This paper is a review of the governance and ethics issues connected to LaSLA. It has four main objectives: First, it offers a critical presentation of three major governance approaches to LaSLA: the “liberal code of conduct” (FAO and the World Bank), the ‘critical liberal human rights’ approach (De Schutter) and the ‘Marxist’ approach (Borras and Franco). Second, it discusses the notion of a human right to land, with reference to John Locke’s theory of appropriating land. Third, it discusses the issue of ensuring an inclusive process in LaSLA. Finally, an argument is made for instituting a (global) obligation to refrain from participating in or benefitting from institutional schemes that facilitate negative land grabbing (Pogge in Politics as usual: what lies behind the pro-poor rhetoric? Polity Press, Cambridge 2010). (shrink)

During the 2007–2008 global food crisis, the prices of primary foods, in particular, peaked. Subsequently, governments concerned about food security and investors keen to capitalize on profit-maximizing opportunities undertook large-scale land acquisitions (LASLA) in, predominantly, least developed countries (LDCs). Economically speaking, this market reaction is highly welcome, as it should (1) improve food security and lower prices through more efficient food production while (2) host countries benefit from development opportunities. However, our assessment of the debate on (...) the issues indicates critical voices in both the media and academic discourse. This article aims to provide a philosophical law and economics analysis. We draw on John Rawls’s Theory of Justice, focusing on Rawls’s background institutions for distributive justice (§43) to evaluate LASLA form an ethical angle. Approaching LASLA into Sub Saharan LDCs as a socio-economic reform redistributing land from the local population of LDCs to investors, we acknowledge that they bear a highly desirable potential. Often, though, they cannot be regarded as ethically correct in practice as the insignificant improvements for local populations and sometimes even human rights violations contradict Rawls’s principles of justice. Then investigating whether and how international law can help overcome the shortcomings, we conclude that even though respective mechanisms exist in the current state of international law, it is hardly possible that it will produce more just outcomes in the near future. (shrink)

This article argues that the definition of land grabs in public debate is a politically contested process with profound normative consequences for policy recommendations regarding the future of the family farm model. To substantiate this argument, I first explore how different definitions of land grabbing bring into focus different kinds of actors and briefly survey the history of land grabbing in Canada. I then introduce the public debate about land grabbing in Québec and discuss its evolution (...) from its beginning in 2009 up until the provincial public inquiry on land grabs in March 2015. Here, I make critical observations regarding each participant’s position, showing how different definitions of land grabbing has significant implications for policy recommendation and the promotion of different agricultural business models. More specifically, I emphasize how these discussions crucially fail to consider indigenous people’s land rights and ignore the constraints imposed by the corporate food regime on family farms. I conclude by suggesting that the adoption of a food sovereignty approach to land governance helps redirect attention to these important issues and provide insight into imagining more sustainable alternative models of agriculture. (shrink)

This paper distinguished different analytical approaches to the evaluation of the sustainability of large-scale land acquisitions—at both the conceptual and methodological levels. First, at the conceptual level, evaluation of the sustainability of land acquisitions depends on what definition of sustainability is adopted—strong or weak sustainability. Second, a lack of comparative empirical methods in many studies has limited the identification of causal factors affecting sustainability. An empirical investigation into the sustainability of land acquisitions (...) in Tanzania that employs these existing concepts in a methodologically rigorous manner offers an opportunity to more clearly addresses ethical questions surrounding international land acquisitions. My findings indicate that it should not be assumed that sustainability necessarily hinges on issues of strong sustainability, particularly that all village lands represent critical natural capital. As a result of its unique history of Ujamaa villagization, Tanzania villages often have ownership of significant tracts of unused land that mitigates the risk of violating conditions of strong sustainability. Issues of weak sustainability appear to be more important to villagers—particularly the degree of man-made capital benefits derived from projects. While compensation rates for lands acquired were low and the process lacked transparency, low compensation rates are not sufficient grounds for rejecting land acquisitions as unsustainable. When projects deliver significant man-made capital benefits, low compensation rates were not a politically salient issue amongst villagers. Finally, results suggest that some prioritization of man-made capital over biodiversity can be ethically defensible when the decision-making process goes through legitimate village government bodies and benefits reach poor villagers. (shrink)

The recent global surge in large-scale foreign land acquisitions marks a radical transformation of the global economic and political landscape. Since land that attracts capital often becomes the site of expulsions and displacement, it also leads to new forms of migration. In this paper, I explore this connection from the perspective of a political philosopher. I argue that changes in global land governance unsettle the congruence of political community and bounded territory that we often (...) take for granted. As a case study, I discuss the European Union’s Renewable Energy Directive as a significant driver of foreign land acquisitions. Using its global power, the European Union (EU) is effectively governing land far outside of its international borders and with it the people who live on this land or are expelled from it. As a result, EU citizens ought to consider such people fellow members of their political community. This has implications for normative debates about immigration and, in particular, for arguments that appeal to collective self-determination to justify a right of political communities to exclude newcomers. The political community to which EU citizens belong reaches far beyond the EU’s official borders. (shrink)

The recent surge in land-based investments in the global South has been seen as both an opportunity for rural economic development and as a trend that poses significant social and environmental risks. This study sheds light on this debate through a look at the tobacco industry in Malawi. We employ a case study approach to investigate how rights, property, and authority associated with land and forest resources have shifted in the context of expanded investments in tobacco, and the (...) stakes for both local land users and citizens. Findings point to the need to broaden the metric of risks and trade-offs associated with large-scale land acquisitions, and to engage in a deeper reading of how these are borne out throughout history. (shrink)

Large-scale transnational land acquisition of agricultural land in the global south by rich corporations or countries raises challenging normative questions. In this article, the author critically examines and advocates a human rights approach to these questions. Mutually reinforcing, policies, governance and practice promote equitable and secure land tenure that in turn, strengthens other human rights, such as to employment, livelihood and food. Human rights therefore provide standards for evaluating processes and outcomes of transnational land (...) acquisitions and, thus, for determining whether they are ethically unacceptable land grabs. A variety of recent policy initiatives on the issue have evoked human rights, most centrally through the consultation and negotiation of the Voluntary Guidelines on the Responsible Governance of Tenure of Land, Fisheries and Forests concluded in 2012. However, a case of transnational land appropriation illustrates weak host and investor state enforcement of human rights, leaving the parties to in interaction with local groups in charge of protecting human rights. Generally, we have so far seen limited direct application of human rights by states in their governance of transnational land acquisition. Normative responses to transnational land acquisition—codes of conduct, principles of responsible agricultural investment or voluntary guidelines—do not in themselves secure necessary action and change. Applying human rights approaches one must therefore also analyze the material conditions, power relations and political processes that determine whether and how women and men can secure the human rights accountability of the corporations and governments that promote large-scale, transnational land acquisition in the global south. (shrink)

This article examines land-use changes by large-scale plantations in Ethiopia and evaluates the impacts thereof on soil organic carbon, micronutrients and bulk density. Remote sensing analysis and field research activities were undertaken at four large-scale plantation projects in Benshanguel Gumuz, Gambella, and Oromia regional states. Results show that the projects largely involved the conversion of both closed and open to closed forests and grasslands, which in turn reduced soil carbon stock and micronutrient levels and increased (...) soil compaction. We argue that unless appropriate soil management activities and impact mitigation strategies are adopted by plantation proponents, these land-use changes will pose a serious threat to the long-term economic viability and sustainability of plantation agriculture in Ethiopia. This could undermine long-term ecosystem health and national food security. (shrink)

The recent phenomenon of land grabbing—that is, the large-scale acquisition of private land rights by foreign investors—is an effect of increasing global demand for farmland, resources, and development opportunities. In 2008–2010 alone, land grabs covered approximately 56 million hectares of land, dispossessing and displacing inhabitants. This article proposes a philosophical framework for evaluating land grabbing as a practice of territorial alienation, whereby the private purchase of land can, under certain conditions, lead to (...) a de facto alienation of territorial sovereignty. If land grabs alienate territorial sovereignty, it follows that inhabitants can claim a violation of the people’s right to “permanent sovereignty over natural resources.” However, because sovereignty is entangled in the historical and contemporary causes of land dispossession, I cast doubt on this strategy. Territorially sovereign regimes often undermine democratic land governance by obstructing participation in activities such as zoning, land use, property regulation, and environmental stewardship. These activities, which I theorize as practices of “world-building,” are key to democracy because they give occupants a say in the shape of their common home. The perplexities of sovereignty in matters of land governance suggest that establishing democratic participation in rule over land requires fracturing sovereignty. (shrink)

We present statistical analyses of the large‐scale structure of 3 types of semantic networks: word associations, WordNet, and Roget's Thesaurus. We show that they have a small‐world structure, characterized by sparse connectivity, short average path lengths between words, and strong local clustering. In addition, the distributions of the number of connections follow power laws that indicate a scale‐free pattern of connectivity, with most nodes having relatively few connections joined together through a small number of hubs with many (...) connections. These regularities have also been found in certain other complex natural networks, such as the World Wide Web, but they are not consistent with many conventional models of semantic organization, based on inheritance hierarchies, arbitrarily structured networks, or high‐dimensional vector spaces. We propose that these structures reflect the mechanisms by which semantic networks grow. We describe a simple model for semantic growth, in which each new word or concept is connected to an existing network by differentiating the connectivity pattern of an existing node. This model generates appropriate small‐world statistics and power‐law connectivity distributions, and it also suggests one possible mechanistic basis for the effects of learning history variables (age of acquisition, usage frequency) on behavioral performance in semantic processing tasks. (shrink)

We present statistical analyses of the large‐scale structure of 3 types of semantic networks: word associations, WordNet, and Roget's Thesaurus. We show that they have a small‐world structure, characterized by sparse connectivity, short average path lengths between words, and strong local clustering. In addition, the distributions of the number of connections follow power laws that indicate a scale‐free pattern of connectivity, with most nodes having relatively few connections joined together through a small number of hubs with many (...) connections. These regularities have also been found in certain other complex natural networks, such as the World Wide Web, but they are not consistent with many conventional models of semantic organization, based on inheritance hierarchies, arbitrarily structured networks, or high‐dimensional vector spaces. We propose that these structures reflect the mechanisms by which semantic networks grow. We describe a simple model for semantic growth, in which each new word or concept is connected to an existing network by differentiating the connectivity pattern of an existing node. This model generates appropriate small‐world statistics and power‐law connectivity distributions, and it also suggests one possible mechanistic basis for the effects of learning history variables (age of acquisition, usage frequency) on behavioral performance in semantic processing tasks. (shrink)

We present statistical analyses of the large‐scale structure of 3 types of semantic networks: word associations, WordNet, and Roget's Thesaurus. We show that they have a small‐world structure, characterized by sparse connectivity, short average path lengths between words, and strong local clustering. In addition, the distributions of the number of connections follow power laws that indicate a scale‐free pattern of connectivity, with most nodes having relatively few connections joined together through a small number of hubs with many (...) connections. These regularities have also been found in certain other complex natural networks, such as the World Wide Web, but they are not consistent with many conventional models of semantic organization, based on inheritance hierarchies, arbitrarily structured networks, or high‐dimensional vector spaces. We propose that these structures reflect the mechanisms by which semantic networks grow. We describe a simple model for semantic growth, in which each new word or concept is connected to an existing network by differentiating the connectivity pattern of an existing node. This model generates appropriate small‐world statistics and power‐law connectivity distributions, and it also suggests one possible mechanistic basis for the effects of learning history variables (age of acquisition, usage frequency) on behavioral performance in semantic processing tasks. (shrink)

This article examines the expansion of agrofuels in the Americas and the ecological impacts associated with the technologies used in the production of large-scale monocultures of corn and soybeans. In addition to deforestation and displacement of lands devoted to food crops due to expansion of agrofuels, the massive use of transgenic crops and agrochemical inputs, mainly fertilizers and herbicides used in the production of agrofuels, pose grave environmental problems.

The Coal Seam Gas extraction industry is developing rapidly within the Surat Basin in southern Queensland, Australia, with licenses already approved for tenements covering more than 24,000 km2. Much of this land is used for a broad range of agricultural purposes and the need for coexistence between the farm and gas industries has been the source of much conflict. Whilst much research has been undertaken into the environmental and economic impacts of CSG, little research has looked into the issues (...) of coexistence between farmers and the CSG industry in the shared space that is a farm business, a home and a resource extraction network. We conducted three workshops with farmers from across a broad region undergoing CSG development to explore farmers’ perceptions of some of the issues arising from large scale land use change. Workshops explored the importance of place identity and landscape aesthetics for farmers, farmers’ acceptance and coping with change, and possible benefits from off-farm income. We found that farmers believed that place identity was not well understood by CSG staff from non-rural backgrounds and that farmers struggled to explain some concerns because of the different way they interpreted their landscape. Furthermore, high staff turnover, and the extensive use of contractors also impacted on communications. These factors were the cause of much frustration and farmers felt that this has led to severe impacts on mental health and wellbeing. Farmers felt that a change in culture within the CSG companies will be required if engagement with farmers is to improve and that efforts to employ local people in these communications was helping this. The workshops also identified a range of issues perceived by farmers arising from increased traffic volumes, impacts to mental health and wellbeing, place identity and loss of water resources for farmers. Finally, it was suggested that scientists and agricultural industry groups will need to work closely with farmers to develop understanding of these emerging issues and to develop solutions that are timely and relevant. (shrink)

Two key themes structure the work of French philosopher of science Gilbert Simondon: the processes of individuation and the nature of technical objects. Moreover, these two themes are also at the heart of contemporary debates within Ethics and Bioethics. Indeed, the question of the individual is a key concern in both Virtue Ethics and Feminist Ethics of Care, while the hyper-technical reality of the present stage of medical technology is a key reason for both the urgency for and the success (...) of the field of Bioethics. And yet, despite its potential for thinking about these issues, Simondon’s philosophy remains largely unknown. Rather than exploring Simondon’s complex ontology for itself, the aim of this paper is to establish what contribution his work can make in Ethics and Bioethics on two essential questions: the relational structure of the self and the nature of the human-technology relation. I argue that Simondon’s re-conceptualization of the individual harmonizes with perspectives in Feminist Bioethics (particularly the Ethics of Care) and points toward what I call an “open” Virtue Ethics that takes relations to be essential. In order to establish this connection, I explore at length the relational approach to Feminist Bioethics offered by Susan Sherwin’s work. I argue that a Simondonian account of technology and of the individual furthers the relational understanding of the self, offers a characterization of Virtue Ethics that is in harmony with the Ethics of Care, and clarifies a notion of responsibility that is implicated in the complex reality of the modern technological milieu. (shrink)

We describe a pattern acquisition algorithm that learns, in an unsupervised fashion, a streamlined representation of linguistic structures from a plain natural-language corpus. This paper addresses the issues of learning structured knowledge from a large-scale natural language data set, and of generalization to unseen text. The implemented algorithm represents sentences as paths on a graph whose vertices are words. Significant patterns, determined by recursive context-sensitive statistical inference, form new vertices. Linguistic constructions are represented by trees composed of significant (...) patterns and their associated equivalence classes. An input module allows the algorithm to be subjected to a standard test of English as a Second Language profi- ciency. The results are encouraging: the model attains a level of performance considered to be “intermediate” for 9th-grade students, despite having been trained on a corpus containing transcribed speech of parents directed to small children. (shrink)

Each of Kant’s three Critiques offers an account of the nature of a mental faculty and arrives at this account by means of a procedure I call ‘faculty analysis’. Faculty analysis is often regarded as among the least defensible aspects of Kant’s position; as a consequence, philosophers seeking to inherit Kantian ideas tend to transpose them into a different methodological context. I argue that this is a mistake: in fact faculty analysis is a live option for philosophical inquiry today. My (...) argument is as follows: Faculty analysis is a live option for certain kinds of philosophical theories if so-called “agentialist” views about the nature of belief are correct. There are good reasons for thinking that such views are correct. So faculty analysis should not be dismissed out of hand. Since the first premise in this argument bears a lot of weight, a large part of the paper is devoted to clarifying and defending it, in part by arguing that Kant himself holds a version of agentialism about belief. (shrink)

Objective Bayesianism says that the strengths of one’s beliefs ought to be probabilities, calibrated to physical probabilities insofar as one has evidence of them, and otherwise sufficiently equivocal. These norms of belief are often explicated using the maximum entropy principle. In this paper we investigate the extent to which one can provide a unified justification of the objective Bayesian norms in the case in which the background language is a first-order predicate language, with a view to applying the resulting formalism (...) to inductive logic. We show that the maximum entropy principle can be motivated largely in terms of minimising worst-case expected loss. (shrink)

The maximum entropy principle is widely used to determine non-committal probabilities on a finite domain, subject to a set of constraints, but its application to continuous domains is notoriously problematic. This paper concerns an intermediate case, where the domain is a first-order predicate language. Two strategies have been put forward for applying the maximum entropy principle on such a domain: applying it to finite sublanguages and taking the pointwise limit of the resulting probabilities as the size n of the sublanguage (...) increases; selecting a probability function on the language as a whole whose entropy on finite sublanguages of size n is not dominated by that of any other probability function for sufficiently large n. The entropy-limit conjecture says that, where these two approaches yield determinate probabilities, the two methods yield the same probabilities. If this conjecture is found to be true, it would provide a boost to the project of seeking a single canonical inductive logic—a project which faltered when Carnap's attempts in this direction succeeded only in determining a continuum of inductive methods. The truth of the conjecture would also boost the project of providing a canonical characterisation of normal or default models of first-order theories. Hitherto, the entropy-limit conjecture has been verified for languages which contain only unary predicate symbols and also for the case in which the constraints can be captured by a categorical statement of quantifier complexity. This paper shows that the entropy-limit conjecture also holds for categorical statements of complexity, for various non-categorical constraints, and in certain other general situations. (shrink)

Varied evidence for a hypothesis confirms it more strongly than less varied evidence, ceteris paribus. This epistemological Variety of Evidence Thesis enjoys long-standing widespread intuitive support. Recent literature has raised serious doubts that the correlational approach of explicating the thesis can vindicate it. By contrast, the eliminative approach due to Horwich vindicates the Variety of Evidence Thesis but only within a relatively narrow domain. I investigate the prospects of extending the eliminative approach to a larger domain by considering a larger (...) class of sensible explications of evidential variety. For a large subclass class of such explications I show how to construct cases in which the less diverse body of evidence for a hypothesis confirms more strongly. I hence argue that these prospects are dire since the eliminative approach widely fails to vindicate the thesis. (shrink)

Despite the many successes of the relativistic quantum theory developed by Horwitz et al., certain difficulties persist in the associated covariant classical mechanics. In this paper, we explore these difficulties through an examination of the classical. Coulomb problem in the framework of off-shell electrodynamics. As the local gauge theory of a covariant quantum mechanics with evolution paratmeter τ, off-shell electrodynamics constitutes a dynamical theory of ppacetime events, interacting through five τ-dependent pre-Maxwell potentials. We present a straightforward solution of the classical (...) equations of motion, for a test event traversing the field induced by a “fixed” event (an event moving uniformly along the time axis at a fixed point in space). This solution is seen to be unsatisfactory, and reveals the essential difficulties in the formalism at the classical levels. We then offer a new model of the particle current—as a certain distribution of the event currents on the worldline—which eliminates these difficulties and permits comparison of classisical off-shell electrodynamics with the standard Maxwell theory. In this model, the “fixed” event induces a Yukawa-type potential, permitting a semiclassical identification of the pre-Maxwell time scale λ with the inverse mass of the intervening photon. Numerical solutions to the equations of motion are compared with the standard Maxwell solutions, and are seen to coincide when λ≳10−6 seconds, providing an initial estimate of this parameter. It is also demonstrated that the proposed model provides a natural interpretation for the photon mass cut-off required for the renormalizability of the off-shell quantum electrodynamics. (shrink)

The present article is written by a theoretical physicist who, for some time, has endeavored to trace the origin of the concepts and principles of quantum theory to an empirical background broader than that afforded by delicate optical and mechanical experiments on a microphysical scale involving the microconstant h. In particular he tried to reduce the dominant role of probability in modern physics to irrefutable evidence of a quite general nature. As long as quantum probability is deduced from experience (...) with seemingly uncontrollable micro-mechanisms—think of radioactive disintegration as the most typical example—there will always be the objection that one day we still may find a hidden causality behind those small scale gambling devices called atoms, although one example of an exactly predictable atomic event would make present-day quantum theory untenable. In order to dislodge the remaining classicists from their fortress of doubt one may try to show that quantum probability is not an alibi for a temporary impotence of predicting microphysical events, but is a positive conclusion drawn from experience of a most general type, namely, from the principle of continuity, the basic tenet of the philosophy of Leibniz. (shrink)

We explore certain difficulties in the covariant classical mechanics associated with off-shell electrodynamics, through an examination of the classical Coulomb problem. We present a straightforward solution of the classical equations of motion for a test event traversing the field induced by a “fixed” event (an event moving uniformly along the time axis at a fixed point in space). This solution reveals the essential difficulties in the formalism at the classical level. We then offer a new model of the particle, as (...) a certain distribution of events on the worldline, which eliminates these difficulties and permits comparison of classical off-shell electrodynamics with the standard Maxwell theory In this model, the “fixed” event induces a Yukawa-type potential, permitting a semiclassical identification of the pre-Maxwell time scale λ with the inverse mass of the intervening photon. Numerical solutions to the equations of motion are compared with the standard Maxwell solutions—they are seen to coincide when λ > 10–6 sec, providing an initial estimate of this parameter. (shrink)

We explore certain difficulties in the covariant classical mechanics associated with off-shell electrodynamics, through an examination of the classical Coulomb problem. We present a straightforward solution of the classical equations of motion for a test event traversing the field induced by a “fixed” event (an event moving uniformly along the time axis at a fixed point in space). This solution reveals the essential difficulties in the formalism at the classical level. We then offer a new model of the particle, as (...) a certain distribution of events on the worldline, which eliminates these difficulties and permits comparison of classical off-shell electrodynamics with the standard Maxwell theory In this model, the “fixed” event induces a Yukawa-type potential, permitting a semiclassical identification of the pre-Maxwell time scale λ with the inverse mass of the intervening photon. Numerical solutions to the equations of motion are compared with the standard Maxwell solutions—they are seen to coincide when λ > 10–6 sec, providing an initial estimate of this parameter. (shrink)

Much of Edmonton’s municipal past lacked any overarching development plan. Once such absentee municipal planning gave way to more concrete forms of municipal planning in terms of shaping the urban environment, conflicting goals soon emerged. Between 1949 and the early 1980s a conflict in planning goals within both the Edmonton District Planning Commission and the City of Edmonton, at this time governed with a commission board became apparent. Often this conflict played out in Edmonton’s river valley with competing visions of (...) preservation and freeway construction. River valley neighborhoods were threatened with land acquisition policies that viewed the river valley as the sole domain of parkland. Concurrently, those neighborhoods and much of the river valley were also threatened by the Metropolitan Edmonton Transportation Study. Citizen engagement in an otherwise politically apathetic city led to its demise, although the threat of large-scale removal of river valley parks and homes throughout the city loomed for some time. The period between 1949 and 1983 represents a period in Edmonton’s history where environmental protection policy clashed with transportation policy that advocated for the wholesale destruction of the river valley and countless homes. It is this conflict that led to increased political awareness that directly contributed to the demise of the METS scheme and gave rise to renewed support for river valley protection while making rapid transit a possibility for Edmonton. (shrink)

Though a recent phenomenon, land grabs have generated considerable debate that remains highly polarized. In this debate, one view presents land deals as a path to sustainable and transformative rural development through capital accumulation, infrastructural development, technology transfer, and job creation while the alternative view sees land grabs as a new wave of neo-colonization, exploitation, and domination. The underlying argument, at least theoretically, is that international land deals unlock the much needed capital to accelerate the achievement (...) of sustainable and transformative rural development in developing countries. It is against this backdrop that this paper examines the contribution of large scale land deals in Malawi to rural development by employing the political economy perspective using the Limphasa Sugar Corporation as a case study with particular focus on the nature and interest of the actors involved; the legal framework supporting large scale land deals; major individual and community benefits; and the extent to which these large land deals can indeed bring about sustainable and transformative rural development. The findings of this article demonstrate that large scale land deals present short term benefits to local communities such as capital for rural development; technology transfer and job creation in exchange for the priceless economic and social capital that local people depend upon; destruction of local social systems; deepening of local communities’ vulnerability to economic shocks; and the entrenchment of community dependence that may in the long run result in social and political unrest. (shrink)

When large-scale common land is taken from villagers by investors with little compensation, their labour unneeded, villagers’ livelihoods tend to be largely destroyed. This implies a tendency to focus on what has been taken from villagers during the land-based change, which has valid and has far-reaching social relevance. But as the rise of the industrial tree plantation (ITP) sector in Guangxi shows, some villagers are capable of having their livelihoods maintained and even expanded when big investors (...) come and acquire massive amounts of land. This seems to be an anomaly at a first glance, considering what has been taken from villagers, but these unexpected and positive livelihood changes can be explained when one closely examines the dynamic of what is taken and what has been left to villagers. During this ITP boom, although large-scale collectively owned forestland is taken by investors and few work opportunities are created to incorporate those affected, villagers’ control over farmland plots and their access to off-farm work opportunities remain (including the land system and labour dynamics). This paper highlights the importance of analysing “taken-left” dynamics to more fully capture diverse livelihood changes. (shrink)

In rural Cambodia the rampant allocation of state land to political elites and foreign investors in the form of “Economic Land Concessions (ELCs)”—estimated to cover an area equivalent to more than 50 % of the country’s arable land—has been associated with encroachment on farmland, community forests and indigenous territories and has contributed to a rapid increase of rural landlessness. By contrast, less than 7,000 ha of land have been allotted to land-poor and landless farmers under (...) the pilot project for “Social Land Concessions (SLCs)” supported by various donor agencies. Drawing on fieldwork conducted in two research sites in Kratie Province, this article sheds light on the mechanisms and discourses surrounding the allocation of ELCs and SLCs. Our findings suggest that large-scale and non-transparent land leases in the form of ELCs are discursively justified as land policy measures supporting national development, creating employment opportunities in rural areas, and restoring “degraded” and “non-use” land, while SLCs are presented by the government and its international donors as a complementary policy to reduce landlessness, alleviate rural poverty, and ensure a more equitable land distribution. We argue that the SLC pilot project is a deliberate strategy deployed by the Cambodian ruling elite to instrumentalize international aid agencies in formalizing displacement and distributional injustices, in smoothing the adverse social impacts of their very own land policies and in minimizing resistance by dispossessed rural people. (shrink)

As populations grow and arable land becomes increasingly scarce, large-scale long- term land leases are signed at a growing rate. Countries and investors with large amounts of financial resources and a strong agricultural industry seek long-term land leases for agricultural exploitation or investment purposes. Leaders of financially poorer countries often advertise such deals as a fast way to attract foreign capital. Much has been said about the short-term social costs these types of leases involve, (...) however, less has been said about the normative dimension of their long-term environmental impact. We therefore will focus on the likely impact such deals have for soil conservation, by (1) briefly introducing the basics of long-term leasing arrangements by comparing land leases to the renting of buildings, (2) explaining from a soil sciences perspective the difficulties in assessing the current value of an estate and in calculating the damages of soil erosion and degradation, and (3) show how difficult it is to incentivize the conservation of soil quality when one cannot sufficiently and cost-effectively valorize existing environmental capital and eventual future damages. Attempting to oblige tenants through contracts to invest in sustainable stewardship has limited potential when liability payments do not reflect true costs and are hard to enforce. (shrink)

In this paper I propose a series of hypotheses for further study that are related to potential negative impacts of non-traditional export agriculture (NTEA) on peasantfarmers in Central America. International lenders and donor agencies are promoting this diversification of agricultural exports as part of structural adjustment programs in the region, in order to increase foreign exchange earnings and raise the incomes of the rural poor.There is growing evidence, however, that the impact on the rural poor may not be favorable. I (...) argue that because NTEA can introduce powerful economies of scale, it is likely to accelerate social differentiation in the countryside and expel large numbers of peasant farmers from their lands. In this sense NTEA may be similar to previous export ‘booms,’ leading to rapid intensification of social instability and conflict in an already troubled region. This raises the serious question of the long term sustainability of this development strategy.There is a shortage of published studies that directly address these issues, making further work essential for the adequate review of NTEA policies. I formulate six testable hypotheses based on the economies of scale associated with NTEA. Each is related to a resource essential for successful agricultural production: land; credit; prices, costs, and subsidies; technology; technical assistance; and markets. I suggest that as NTEA grows, small farmer access to each is reduced, eventually making peasant production for domestic consumption an unviable alternative, while those who venture into NTEA encounter unacceptable levels of risk. (shrink)

Traditional methods for deriving property-based representations of concepts from text have focused on either extracting only a subset of possible relation types, such as hyponymy/hypernymy (e.g., car is-a vehicle) or meronymy/metonymy (e.g., car has wheels), or unspecified relations (e.g., car—petrol). We propose a system for the challenging task of automatic, large-scale acquisition of unconstrained, human-like property norms from large text corpora, and discuss the theoretical implications of such a system. We employ syntactic, semantic, and encyclopedic information to (...) guide our extraction, yielding concept-relation-feature triples (e.g., car be fast, car require petrol, car cause pollution), which approximate property-based conceptual representations. Our novel method extracts candidate triples from parsed corpora (Wikipedia and the British National Corpus) using syntactically and grammatically motivated rules, then reweights triples with a linear combination of their frequency and four statistical metrics. We assess our system output in three ways: lexical comparison with norms derived from human-generated property norm data, direct evaluation by four human judges, and a semantic distance comparison with both WordNet similarity data and human-judged concept similarity ratings. Our system offers a viable and performant method of plausible triple extraction: Our lexical comparison shows comparable performance to the current state-of-the-art, while subsequent evaluations exhibit the human-like character of our generated properties. (shrink)

Various aspects of semantic features drive early vocabulary development, but less is known about how the global and local structure of the overall semantic feature space influences language acquisition. A feature network of English words was constructed from a large database of adult feature production norms such that edges in the network represented feature distances between words (i.e., Manhattan distances of probability distributions of features elicited for each pair of words). A word's global feature distinctiveness is measured with respect (...) to all other words in the network and a word's local feature distinctiveness is measured relative to words in sub‐networks derived from clustering analyses. This paper investigates how feature distinctiveness of individual words at local and global scales of the network influences language acquisition. Regression analyses indicate that global feature distinctiveness was associated with earlier age of acquisition ratings, and was a stronger predictor of age of acquisition than local feature distinctiveness. These results suggest that the global structure of the semantic feature network could play an important role in language acquisition, whereby globally distinctive concepts help to structure vocabulary development over the lifespan. (shrink)

The forms of words as they appear in text and speech are central to theories and models of lexical processing. Nonetheless, current methods for simulating their learning and representation fail to approach the scale and heterogeneity of real wordform lexicons. A connectionist architecture termed thesequence encoderis used to learn nearly 75,000 wordform representations through exposure to strings of stress‐marked phonemes or letters. First, the mechanisms and efficacy of the sequence encoder are demonstrated and shown to overcome problems with traditional (...) slot‐based codes. Then, two large‐scale simulations are reported that learned to represent lexicons of either phonological or orthographic wordforms. In doing so, the models learned the statistics of their lexicons as shown by better processing of well‐formed pseudowords as opposed to ill‐formed (scrambled) pseudowords, and by accounting for variance in well‐formedness ratings. It is discussed how the sequence encoder may be integrated into broader models of lexical processing. (shrink)

The forms of words as they appear in text and speech are central to theories and models of lexical processing. Nonetheless, current methods for simulating their learning and representation fail to approach the scale and heterogeneity of real wordform lexicons. A connectionist architecture termed thesequence encoderis used to learn nearly 75,000 wordform representations through exposure to strings of stress‐marked phonemes or letters. First, the mechanisms and efficacy of the sequence encoder are demonstrated and shown to overcome problems with traditional (...) slot‐based codes. Then, two large‐scale simulations are reported that learned to represent lexicons of either phonological or orthographic wordforms. In doing so, the models learned the statistics of their lexicons as shown by better processing of well‐formed pseudowords as opposed to ill‐formed (scrambled) pseudowords, and by accounting for variance in well‐formedness ratings. It is discussed how the sequence encoder may be integrated into broader models of lexical processing. (shrink)

This book originated at a small and informal workshop held in December of 1992 in Idyllwild, a relatively secluded resort village situated amid forests in the ...

Modelling and simulations have gained a leading position in contemporary attempts to describe, explain, and quantitatively predict the human brain's operations. Computer models are highly sophisticated tools developed to achieve an integrated knowledge of the brain with the aim of overcoming the actual fragmentation resulting from different neuroscientific approaches. In this paper we investigate plausibility of simulation technologies for emulation of consciousness and the potential clinical impact of large-scale brain simulation on the assessment and care of disorders of (...) consciousness, e.g. Coma, Vegetative State/Unresponsive Wakefulness Syndrome, Minimally Conscious State.Notwithstanding their technical limitations, we suggest that simulation technologies may offer new solutions to old practical problems, particularly in clinical contexts. We take DOCs as an illustrative case, arguing that the simulation of neural correlates of consciousness is potentially useful for improving treatments of patients with DOCs. (shrink)

In the Modern Synthesis, the ontology of species is context-dependent: species are seen as "individuals" at any instant in geological time; through time, species-lineages are class-like entities regularly transforming themselves into other, descendant species. Moreover, at any one instant in time, species are predominantly construed as reproductive communities; through time, they are seen as economic entities, bound together by the joint possession of anatomical similarities among constituent organisms. It is argued that a more complete picture sees species as spatiotemporally bounded (...) historical "individuals", hence as reproductive communities in time as well as space; that species are not economic units; and that a complete evolutionary theory must address large-scale economic units as well as large-scale informational units, visualizing particular instances of such hierarchically arranged classes as spatiotemporally bounded historical entities -- i.e., as "individuals". (shrink)

A prominent historiographic theme in the past decade has been a movement away from causal explanation of large-scale processes and outcomes and toward narrative interpretation of singular historical processes. This article argues for the continued vitality of large-scale historical inquiry and surveys the historiographic issues that arise in large-scale historical explanation. The article proceeds through an examination of several important recent examples of large-scale history: comparative history of Europe and China, the history (...) of alternative forms of industrial organization, and the history of technology. These three cases provide the basis for a conception of what may be called "conjunctural contingent meso-level" explanations: explanations that identify intermediate-level structures and processes and highlight both the structural factors that govern change and the multiple pathways that change can take. (shrink)

In this article, I argue that experimental ethics – like experimental economics – should also concern itself with field experiments. In particular, I defend two claims: a) that philosophers in normative ethics could considerably narrow down their disputes if they could agree on a wider range of socio-economic facts; and that b) the socio-economic facts that would be needed for this could only be generated by deliberate large-scale social experimentation. This essay normatively grounds my interest in special administration (...) zones. (shrink)

This paper offers a new way to make sense of disagreement expansion from a polylogical perspective by incorporating various places in addition to players and positions into the analysis. The concepts build on prior implicit ideas about disagreement space by suggesting how to more fully account for argumentative context, and its construction, in large-scale complex controversies. As a basis for our polylogical analysis, we use a New York Times news story reporting on an oil train explosion—a significant point (...) in the broader controversy over producing oil and gas via hydraulic fracturing. (shrink)

Timetabling problems are specific types of scheduling problems that deal with assigning certain events to the timeslots. This assigning is subject to certain hard constraints that should be achieved to get a feasible timetable and soft constraints that must meet as many as possible during forming a feasible schedule. This paper introduces an adaptive tabu search. Eleven benchmark datasets of the year 2002 are applied to show the effectiveness of the introduced algorithm. These datasets consist of 5-small, 5-medium, and 1- (...) class='Hi'>large dataset. As compared to other methods from previous works, the proposed algorithm produces excellent timetables, in comparison with the algorithms as well as the current results, the mathematical results showed the high effectiveness of the suggested algorithm. It has a minor deficit on the medium or the small problem adaptive Tabu, and the tabu search relies on the tabu list and penalty cost when the change in the penalty cost is checked; if it is still unchanged for the period of iterations (1,000 iterations), the tabu list reduces automatically by (−2); furthermore, the tabu list remains constant. (shrink)