Controlling tropical deforestation : an analysis of alternative policies

After discussing ownership issues related to tropical forests, theauthor develops a simple general equilibrium model to represent - at least in a stylized way - the salient aspects of the deforestation process. He uses the model to generate first- and second-best policy options for controlling deforestation and, later, to assess the environmental consequences of government policies often cited in the literature on deforestation. Property rights, though important for understanding the process of tropical deforestation, do not necessarily point to a simple or straightfoward fix for environmental problems, particularly in developing countries. The sheer size, communal nature of service flows, and pervasiveness of individual access to tropical forests make monitoring and enforcement costly in some situations and unimaginable in others. Redefining nominal rights in ways that appear to correct inefficiencies may yield gains in some cases, but an approach to environmental protection that leans heavily on this prescription seems aimed more at symptoms than at causes, says the author. Moreover, policy approaches based on the use of Pigovian taxes or marketable permit schemes may yield efficiency gains in some cases, but such approaches generally involve the same monitoring and enforcement problems that prevent the market from solving allocation problems. Simple, direct solutions to deforestation and other environmental problems are unavailable, but an ability to understand the environmental and welfare consequences of policies adopted for other reasons is useful - if only to help policymakers avoid mistakes that would otherwise go unrecognized. The model the author develops for this purpose is highly stylized and intended primarily to provide a systematic way of thinking about the environmental and welfare effects of government policy - for example, by considering patterns of substitution among inputs and outputs, in cases where an environmental resource to which people have free access is exploited. If the use of first-best policies is infeasible - whether because of monitoringcosts, transboundary effects, or other reasons - then it becomes important to have detailed knowledge of patterns of substitution and complementarity among ordinary inputs and environmental resources, and information on the use of various environmental resources in the production of specific goods and services. Knowledge of such factors can permit policymakers to pursue policy goals in situations where first-best instruments are unavailable.Environmental Economics&Policies,Economic Theory&Research,Public Sector Economics&Finance,Forestry,Markets and Market Access

Ownership Risk, Investment, and the Use of Natural Resources

The effect of insecure ownership on ordinary investment and on the exploitation of natural resources is examined. Insecure ownership is characterized as a positive probability that a typical asset or its future return will be confiscated. For empirical analysis, the probability of confiscation is modeled as a function of observable political attributes of countries, principally the type of government regime in power (democratic versus non-democratic) and the prevalence of political violence or instability. A general index of ownership security is estimated from the political determinants of economy wide investment rates, and then introduced into models of petroleum and forest use. Ownership risk is found to have a significant, and quantitatively important effect. Empirically, increases in ownership risk are associated with reductions in forest cover and with slower rates of petroleum exploration. Contrary to conventional wisdom, greater ownership risk tends to slow rates of petroleum extraction, apparently because the extraction process is capital intensive.

The Efficiency Gains from Fully Delineating Rights in an ITQ Fishery

Individual transferable quota (ITQ) regulation relies on a decentralized market mechanism and a single price to allocate access to a stock of fish. The resulting allocation will not be fully efficient if the stock being allocated is heterogeneous or if there are potential gains from centralized coordination of harvesting effort. If stocks are heterogeneous in their density, location, or unit value during the season, harvesters governed by an ITQ policy will not be indifferent to when or where they exercise their quotas. Stocks that are relatively dense and/or close to port will be preferred to those less dense or more remote. Because an ITQ policy assigns the same opportunity cost for each unit harvested, individual harvesters have an incentive to compete for higher-valued units, and such competition may dissipate part of the fishery’s potential rent. A similar phenomenon arises when stock densities vary in an unknown way over space or time, so harvesters must engage in costly search. Individual harvesters governed by an ITQ policy still face a collective action problem which limits the incentive to share information on stock locations. This can lead to redundant search effort. We demonstrate that both sources of inefficiency can be eliminated either by defining ITQ rights more precisely or by an agreement among harvesters to coordinate their effort. We develop models that illustrate these effects and identify the factors that determine their likely size. Anecdotal evidence on practices adopted by fishery cooperatives is presented to illustrate the practical relevance of the issues we raise.ITQ fishery, cooperative, search, game theory, property rights, Environmental Economics and Policy, Institutional and Behavioral Economics, International Relations/Trade, Q22, D23, K11,

Assessing Burrowing, Nest Construction, and Hoarding in Mice

Deterioration in the ability to perform "Activities of daily living" (ADL) is an early sign of Alzheimer's disease (AD). Preclinical behavioural screening of possible treatments for AD currently largely focuses on cognitive testing, which frequently demands expensive equipment and lots of experimenter time. However, human episodic memory (the most severely affected aspect of memory in AD) is different to rodent memory, which seems to be largely non-episodic. Therefore the present ways of screening for new AD treatments for AD in rodents are intrinsically unlikely to succeed. A new approach to preclinical screening would be to characterise the ADL of mice. Fortuitously, several such assays have recently been developed at Oxford, and here the three most sensitive and well-characterised are presented

Human and animal models for translational research on neurodegeneration: Challenges and opportunities from South America

Facing the alarming growth of dementia and neurodegenerative conditions has become a critical priority across the globe (Alzheimer´s Disease International, 2009;Lancet, 2015;Shah et al., 2016;Parra et al., 2018). Neurodegenerative diseases are the most frequent cause of dementia, representing a burden for public health systems (especially in middle and middle-high income countries). Although most research on this subject is concentrated in first-world centers, growing efforts in South American countries (SACs) are affording important breakthroughs. This emerging agenda poses not only new challenges for the region, but also new opportunities for the field at large. SACs have witnessed a promising development of relevant research in humans and animals, giving rise to new regional challenges. As highlighted in a recent experts? consensus paper Latin-American countries (LAC), and SACs in particular (Parra et al., 2018), face a critical situation. Higher demographic rates and the predicted prevalence of dementia have reached and even exceeded those of developing countries. In SACs, low- and middle-income countries (e.g., Bolivia, Paraguay), the prevalence of dementia will double that of high-income countries, while upper-middle-income countries in the region (e.g., Argentina, Brazil, Chile, Colombia, Peru, Uruguay, and Venezuela) will experience the greatest impact of dementia. The WHO estimated that the standardized prevalence of dementia in Latin America was 8.5%, but multiple SACs have been underrepresented or underestimated in such a calculation (Parra et al., 2018). Moreover, raw prevalence rates across studies are characterized by high variability within and between countries (e.g., Argentina: 8.3; Brazil: 7.1-2.0; Chile: 4.4-7.0; Colombia: 6.0; Peru: 6.72-9.3; Uruguay: 3.1; Venezuela: 5.7-13,7) (Parra et al., 2018). In addition, most of these studies are undermined by various limitations and methodological problems. Even considering these data, SACs possess the highest global prevalence of dementia after North Africa/Middle East in people above the age of 60 (Parra et al., 2018). Moreover, the harmonization of global strategies against dementia in these contexts is hindered not only by reduced epidemiological data, but also by the lack of standardized clinical practice, insufficient training of physicians, limited resources, and poor governmental support, let alone poverty and more general cultural barriers and stigmas. All of these factors have impacted the type and amount of research conducted in SACs. A regional network, based on multiinstitutional actors from research, governmental, and private sectors is fundamental to overcome these challenges (Parra et al., 2018).Fil: Ibanez Barassi, Agustin Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Neurociencia Cognitiva. Fundación Favaloro. Instituto de Neurociencia Cognitiva; Argentina. Instituto de Neurología Cognitiva. Laboratorio de Psicología Experimental y Neurociencia; Argentina. Universidad Autónoma del Caribe; Colombia. Universidad Adolfo Ibañez; ChileFil: Sedeño, Lucas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Neurociencia Cognitiva. Fundación Favaloro. Instituto de Neurociencia Cognitiva; Argentina. Instituto de Neurología Cognitiva. Laboratorio de Psicología Experimental y Neurociencia; ArgentinaFil: García, Adolfo Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Neurociencia Cognitiva. Fundación Favaloro. Instituto de Neurociencia Cognitiva; Argentina. Instituto de Neurología Cognitiva. Laboratorio de Psicología Experimental y Neurociencia; Argentina. Universidad Nacional de Cuyo. Facultad de Educación Elemental y Especial; ArgentinaFil: Deacon, Robert. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Neurociencia Cognitiva. Fundación Favaloro. Instituto de Neurociencia Cognitiva; Argentina. Instituto de Neurología Cognitiva. Laboratorio de Psicología Experimental y Neurociencia; Argentina. Universidad de Chile; ChileFil: Cogram, Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Neurociencia Cognitiva. Fundación Favaloro. Instituto de Neurociencia Cognitiva; Argentina. Instituto de Neurología Cognitiva. Laboratorio de Psicología Experimental y Neurociencia; Argentina. Universidad de Chile; Chil

Equivalent Axleloads for Pavement Design

Proper structural design of highway pavements requires an evaluation of the destructive effects of the anticipated vehicular loading. The concept of load equivalency provides a means for expressing these destructive effects in terms of a single measure, the equivalent axleloads (EAL\u27s). The design EAL\u27s represents the equivalent number of applications of a standard or base axleload anticipated during the design life

Determination of Traffic Parameters for the Prediction, Projection, and Computation of EWL’s

One of the first published methods for the structural design of highway pavements was called the Massachusetts Rule and was presented in the eighth annual report of the Massachusetts Highway Commission in 1901 (1). The essence of this procedure was a rather intuitive assumption concerning the distribution of vertical pressures beneath a loaded area. For design purposes, this required the selection of a design load which, since failure was assumed to be catastrophic and not cumulative, could be taken as the largest load that could reasonably be anticipated during the design life of the pavement. The prediction of such a design load was in itself a rather formidable task

Providing Long-Term Services and Supports to an Aging Ohio : Progress and Challenges

This report details trends in Ohio long-term care service utilization over 14 years. It also provides information about the characteristics of those in different settings such as PASSPORT, nursing homes, and residential care facilities. Recommendations for Ohio's long-term care system are included

The Evolving argument : negotiating improved academic writing skills and class cohesion

It is often difficult for instructors to prompt Japanese students to negotiate their opinions. Negotiation, however, plays a central role in second language learning and is a key component of active learning. As the pedagogical prominence of active learning continues to gain attention in Japan, instructors may feel challenged balancing guidance with activity. This paper describes a semester-long activity designed to facilitate negotiation to produce better class cohesion, critical thinking, and persuasive writing skills. The results suggest stronger class cohesion and that the writing structure from the group activity transferred to individual work. Grammatical peer-feedback, however, appeared to be minimal