2,836 research outputs found
Sustainable development and institutions: The case of property rights
Property rights correspond to one of the central institutions in the debate on sustainability. Nowadays, and in the case of landed property rights, this importance has been worldwide increased by the concerns on food security and climate change. In fact, the control and use of important natural resources allowed by the institution of property are crucial to food production and the mitigation of climatic changes. The paper presents the institution of property rights considering the contribution of economic theory, namely Classical Political Economists and Institutionalism perspective. The revision of literature and conceptual approach on property rights is followed by the analysis of crucial norms regarding the definition of landed property rights in the Portuguese case, providing the base to critically address this institution within the debate on sustainability.info:eu-repo/semantics/publishedVersio
Mack : A Comedy Television Pilot
My Capstone project is titled Mack. The project entails writing, producing, casting, budgeting, scheduling, directing and editing an original dark, observational television pilot. Mack explores the world, inner thoughts and expectations of college junior Mack Green, as he navigates school, romance, and everyday life. The project is broken up into three stand-alone narratives: “Smoking,” “Chivalry,” and “Advice.
Towards a political economy of land: reciprocal rights and duties in private property
The paper explores some fundamental aspects of a Political Economy of Land such as the definition of rights and duties in legal and ethical terms. The increasing demands of sustainability introduces the need of a critical analysis of this institution with the purpose to explain and improve the present discussion that pursue alternative forms of appropriation and use of natural resources such as land. The responsibility involved in property rights and, thus, its conception in reciprocal terms, is present in some of the most important works of economic thought, namely Classical Political Economy and Old Institutionalism. These theories present important insights to the conception of land and its exploitation. The analysis of the legal rules that define property rights in the Portuguese case stresses the rights and duties involved in property. Besides Law, a Political Economy of Land should consider Ethics, namely Land Ethics. Therefore, the paper presents an essay for the analysis of property rights trough economic, legal and ethical concerns envisaging the design of a Political Economy of Land.info:eu-repo/semantics/publishedVersio
Land and law: reciprocal rights and duties in private property
The paper aims to explore the property concept as one which includes the definition of rights and duties. It is important to discuss this concept in an attempt to improve the present discussion about the appropriation and exploitation of natural resources such as land in general and farm land in particular. The responsibility associated with rights and, thus, its conception in reciprocal terms, is present in some of the main works of economic thought. In developed societies legal rules play an important role in the definition of rights and reciprocal duties. This
importance justifies the contact with and the analysis of the legal rules that define property rights in a specific case – that of Portugal. The previous considerations reveal the approach adopted in property rights study and can be summed up in three words: memory, plurality and (legal) reality.
These options offer an essay for the analysis of rights in its human dimension, including, as a final note, some ethical considerations that involve man-nature relations
Local Anomalies, Local Equivariant Cohomology and the Variational Bicomplex
The locality conditions for the vanishing of local anomalies in field theory
are shown to admit a geometrical interpretation in terms of local equivariant
cohomology, thus providing a method to deal with the problem of locality in the
geometrical approaches to the study of local anomalies based on the
Atiyah-Singer index theorem. The local cohomology is shown to be related to the
cohomology of jet bundles by means of the variational bicomplex theory. Using
these results and the techniques for the computation of the cohomology of
invariant variational bicomplexes in terms of relative Gel'fand-Fuks cohomology
introduced in [6], we obtain necessary and sufficient conditions for the
cancellation of local gravitational and mixed anomalies.Comment: 36 pages. The paper is divided in two part
Aspects of the Unitarized Soft Multipomeron Approach in DIS and Diffraction
We study in detail the main features of the unitarized Regge model (CFKS),
recently proposed to describe the small- domain. It takes into account a
two-component description with two types of unitarized contributions: one is
the multiple pomeron exchange contribution, interacting with the large dipole
configurations, and the other one consists of a unitarized dipole cross
section, describing the interaction with the small size dipoles. We analyze the
ratio between soft and hard pieces as a function of the virtuality, and also
compare the resulting dipole cross section to that from the saturation model.
Diffraction dissociation is also considered, showing the scaling violations in
diffractive DIS and estimating the corresponding logarithmic slope.Comment: 14 pages, 5 postscript figures. Version to be published in Eur. Phys.
J.
Capturing coevolutionary signals in repeat proteins
The analysis of correlations of amino acid occurrences in globular proteins
has led to the development of statistical tools that can identify native
contacts -- portions of the chains that come to close distance in folded
structural ensembles. Here we introduce a statistical coupling analysis for
repeat proteins -- natural systems for which the identification of domains
remains challenging. We show that the inherent translational symmetry of repeat
protein sequences introduces a strong bias in the pair correlations at
precisely the length scale of the repeat-unit. Equalizing for this bias reveals
true co-evolutionary signals from which local native-contacts can be
identified. Importantly, parameter values obtained for all other interactions
are not significantly affected by the equalization. We quantify the robustness
of the procedure and assign confidence levels to the interactions, identifying
the minimum number of sequences needed to extract evolutionary information in
several repeat protein families. The overall procedure can be used to
reconstruct the interactions at long distances, identifying the characteristics
of the strongest couplings in each family, and can be applied to any system
that appears translationally symmetric
Feeding the future: The critical role of seeds in food systems and cultural heritage
Genetic resources constitute a critical resource to deal with the current climatic and geostrategic challenges. The XXI century reintroduced the problem of food security in political and scientific agendas of developed countries. At the roots of this re-emergence are multidimensional reasons: economic (cereals crisis in 2008), public health (covid pandemic), and war (Russia vs Ukraine). Within this context, the reflection on basic issues concerning the food system, namely food production and the resources involved in, such as seeds, is of utmost importance. The paper presents an exploratory approach to genetic conservation through banks in Portugal. The sections of the paper include a problematization, namely the international and national framework on the subject, the design of an analytical model, and the presentation of the results of a case study of a Portuguese genetic bank.info:eu-repo/semantics/publishedVersio
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