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Copyright of Revista de Economía Institucional is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper explores the effect of the frequency of data on the accuracy (measure by variance) of the maximum likelihood estimator (MLE) of the trend parameter μ in a jump-diffusion process à la Press (1967). First, we consider the case without jumps (i.e., the geometric Brownian motion (GBM)) as a benchmark case to show that the frequency of data is irrelevant in this first setting. Then, we consider the case with jumps and highlight that things are different in this second situation. Specifically, the asymptotic variance of the MLE of the trend parameter turns out to be higher compared to the case without jumps. Nevertheless, we also prove that when sampling occurs infinitely often (i.e., high frequency) it is possible to obtain the same accuracy for the MLE of μ as for the GBM, given that for higher frequencies it is easier to "identify" price discontinuities (i.e., jumps) for this model. Mathematical proofs are performed under the assumption that the MLE of μ is estimated given the other parameters, but numerical (Montecarlo) simulations indicate that this is also the case even when all parameters are estimated together. [ABSTRACT FROM AUTHOR]

Simulations and empirical studies suggest that incorporating a discontinuous jump process in asset pricing models improve volatility forecasting, pricing of instruments, and hedging positions in a portfolio. In this paper we analyze high frequency market data of Colombian sovereign bonds to study the presence or absence of discontinuities in the price generating process. We find that Colombian sovereign debt experiments jumps across all maturities but with different frequencies, in particular, we do not find that long term bonds jump less frequently than short term bonds. Furthermore, bonds with closer maturities cojump in greater magnitude than those with a greater distance between them. Finally, we find significant day-of-the-week effects, as well as an important increase in the jump frequency due to surprises in economic information related to US monetary policy, and no effect due to direct monetary policy announcements in Colombia. [ABSTRACT FROM AUTHOR]

This paper presents the main theoretical developments of modern portfolio theory. At first, the fundamental elements of the Markowitz mean-variance model (MV), its formulation and solution of the optimization problem, as well as its limitations, are introduced. Then, different extensions of the MV model are presented by introducing alternative risk measures, as well as the adjustments of the portfolio construction model. In that sense, the downside risk approach is presented. Finally, robust portfolio approaches are introduced considering Bayesian, robust optimization, and risk-parity approaches. From these novel approaches, the adjustments that allow us overcoming some of the limitations of the MV model are highlighted. Also, recent developments that extend the original formulations of the portfolio model to address new challenges and current issues are introduced. [ABSTRACT FROM AUTHOR]

China’s economic resurgence augurs the possibility of a recalibration in the global balance of power. Many contend that this process is already underway in East Asia – specifically in relation to the South China Sea. In other parts of the world, China’s growing footprint is discernible through infrastructure projects, under Beijing’s Belt and Road initiative. Does China leverage its economic power to realise its interests by forcing smaller nations to accept conditions and agreements which are not in the latter’s interests? This paper examines whether evidence to this effect is visible through a case study of Sri Lanka. The island’s geographic location – astride the Indian Ocean Sea Lanes of Communication – continues to draw the attention of regional and extra-regional powers. Sri Lanka’s constraints in size and poor pace of economic development also grants leeway for India (the regional hegemon) and China to leverage bilateral ties in their interest. Is there evidence to suggest that China has utilised port infrastructure to realise its national interests at the expense of Sri Lanka? Or, has Sri Lanka managed to thread a fine line between the two Asian powers: the neighbouring regional hegemon – India; and the resurgent great power – China? Does the truth lie somewhere in between? This article delves into these questions by examining the approaches and stances which Sri Lanka has adopted towards both nations, particularly during President Gotabaya Rajapakse’s government, from 2019 leading up to the end of 2021. By doing so, it aims to shed light on how Sri Lanka handled bilateral ties with both Asian powers as well as the degree of Sino-Indian competition visible within the island’s port infrastructure landscape. It concludes that the decisions reached with regard to port infrastructure projects represent a mixed picture. A key finding is the ability of domestic interest groups to shape Sri Lanka’s foreign policy during this period, which has significantly dented the island’s ties with other regional allies such as Japan. [ABSTRACT FROM AUTHOR]

This paper aims to discuss the situation of Mauritius in the post-colonial geopolitical configuration of the Indian Ocean. The island nation, a former British colony that has been independent since 1968, is today confronted with geopolitical issues that place it within a dilemma. Its recent allegiance with India, through preferential trade partnership, makes claiming sovereignty over the Chagos Archipelago which was part of its territory before independence complicated. There is in an ongoing conflict with Great Britain and, indirectly, the United States on this contentious issue. At the same time, Mauritius needs to consider China’s influence in the region since it partners with most of the independent nations on matters of economic development. Mauritius itself has established an important trading platform through Chinese assistance. Concurrently, the Mauritian relationship with the United States cannot be compromised as it has been the major trading partner since 1794 with an embassy established in 1968. Hence, trapped between economic ties from all the partners engaged in the Indian Ocean, Mauritius strives to maintain its neutrality, while also being obliged to accept that its location, size and influence might not be enough to contest against past and emerging superpowers. To this end, the power games remain as complex as ever in the Indian Ocean when seen from a Mauritian perspective. [ABSTRACT FROM AUTHOR]

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Ten years after the creation of the National System of Response to Climate Change (snrcc for its acronym in Spanish) in Uruguay, this paper examines the perceptions among local actors about the impacts of climate change on the Northeast region of the country (Departments of Rivera, Tacuarembó and Cerro Largo). It also analyzes their visions about policies and mechanisms of climate governance defined at the national level, focusing some aspects such as articulation and participation. This way the paper aims to generate relevant inputs for the discussion about the design of policies for mitigation and adaptation to this phenomenon in the specific territory considered here. [ABSTRACT FROM AUTHOR]

Copyright of Revista de Economía Institucional is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Economía Institucional is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The purpose of this paper is to analyze the role of the State in Argentina in the last three decades, based on oil policies, in order to understand its different transformations. The 90s were characterized by an abrupt referential change in the role of the state but especially in the productive and regulatory capacity on hydrocarbons. Despite of the neoliberal paradigm crisis on the beginning of the new millennium, energy policies on hydrocarbons still maintained the previous referential sector strategies. From the analysis of documentary sources and quantitative data, this paper aims to demonstrate how oil policy remains managed by market forces despite the fact that 51 % of Yacimientos Petrolíferos Fiscales (YPF) shares were purchased by the State. [ABSTRACT FROM AUTHOR]

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Economía Institucional is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Economía Institucional is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Economía Institucional is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Economía Institucional is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Economía Institucional is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Economía Institucional is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Digital de Derecho Administrativo is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Historically, financial instability has been encouraged changes in the regulation of banking institutions. This paper deals with the first banking experiences occurred in Argentina, Brazil, Spain and Portugal and their crises in the first half of the 19th century. As issuing banks, the main obstacle that these institutions had to overcome was to guarantee the convertibility of their bank notes. In all countries the state intervened, initially and in general, granting the issuing privilege in exchange for economic favors. This had a negative impact on the first banking experiences, mostly unsuccessful. The surviving banks received support from the state to continue, but also had more restrictive regulations regarding issuance. In the analyzed cases, the banking crises produced changes in the regulation of banks. [ABSTRACT FROM AUTHOR]

The financial cycle consists of the joint evolution of asset prices and credit aggregates. Its regularity has been abundantly studied for panels of countries which regularly include developed countries and sometimes include less developed or developing countries. This paper employs an innovative methodology to analyze the Colombian financial cycle from time series and bivariate perspectives. First, we characterize expansions and contractions in the stock market and the real exchange rate. These are two distinct asset classes that play an essential role as stores of value in middle-income countries. Our analysis is completed by identifying bull and bear phases in the local-currency credit market. We test the hypothesis that the changes in regulation that originated with the end-of-century crisis in the country impacted the evolution of asset prices and credit aggregates. We find that the amplitude and severity of contraction phases decreased post-reforms, which may signal the success of the new regulation. We find no effect on the behaviour of asset prices and argue that this is to be expected since they were not targeted. Finally, we find that the joint movement of stocks and credit peaks during financial crises and troughs during economic expansions, consistent with findings in the international literature. [ABSTRACT FROM AUTHOR]

At the beginning of the 21st century, an unprecedented theoretical change in perspective took place, and non-Western theoretical approaches began to be developed as an alternative to traditional theories of International Relations. In this way, some specialists began to debate about the emergence and consolidation of a "Chinese School of International Relations", based mostly on the Asian culture. The aim of this paper is to present the main streams of international studies in China, among which the reverse, obverse and interactive approaches stand out. Likewise, it is particularly intended to understand the conception of international cooperation of each of these approaches. In addition, it is intended to highlight the evolution of international studies in China and departs from the assumption that the production and changes of the axis of international studies follow the rise and geographical position of the great powers. In the Chinese case, they have been growing in parallel with its international prominence and the attainment of great power status. The theoretical framework proposed for this research takes as a starting point the so-called non-western theories, that is, all those theories that are not part of the mainstream of the Western International Relations Theories. [ABSTRACT FROM AUTHOR]

Migration is a common phenomenon in Africa as citizens migrate within the continent for several reasons including education, family, employment, trade, and investment. Significant numbers of African migrants travel to the Middle East in search of economic opportunities. With the intensification of globalisation and the advancement of technology, human mobility across international borders is expected to rise in the coming decades. Despite challenges of international migration, migrants play a significant role in destination countries as they boost working-age population; contribute to revenue generation through taxes; contribute to human capital development; and enrich technological progress. Countries of origin increasingly appreciate their Diaspora communities due to remittances and migrants' skills. The growing number of African migrants calls for a strategic partnership between Africa and the Middle East through a multilateral forum that will enhance policy consultation and coordination for the benefit for both sides. The paper analyses intra-African migration, migration patterns from Africa to the Middle East and Gulf Cooperation Council (GCC) countries, drivers of migrations, migrants' positive contributions and challenges; national and Africa's Regional Economic Communities (RECs) responses in protecting the migrants. Key recommendations including the strengthening of free movement policies is critical Africa in ensuring that rights of African migrants are protected within Africa; working towards improving migration data to inform policy; enhancing interregional cooperation between Africa's RECs to enhancing the potential of intra-African migration; and fast-tracking the establishment of an effective multilateral forum for Africa and the Middle East for enhancing policy consultation and coordination to guarantee their common interests. [ABSTRACT FROM AUTHOR]

The five new Central Asian States that emerged from the fall of the Soviet Union began a process of State capacity building and the rule of law in their territories. Even though each one has its particularities, the continuity of autocratic political systems is a common factor among them. The privileged geographical position of Central Asia as a mandatory step between Europe and Asia, and its fundamental role in the energy security of world great powers, make the region increasingly important within the political and economic dynamics of the current International System. This might be a factor of analysis that affects changes and configurations in the political arena. This paper examines the extent to which external factors influence domestic politics by drawing on the theoretical background of authoritarian regimes and democratic transition, historical liaisons after the fall of the Soviet Union, as well as external factors such as security affairs, international trade, infrastructure projects in oil and gas pipelines, and competence for scarce water resources in the region. [ABSTRACT FROM AUTHOR]

This research paper presents a method for the analysis of codes of ethics driven by the strategic interests of the organization. For the review of codes of ethics it is important understand your value structure. The first step consists in a statistical analysis of terms that denote values. The second step consists in a semantical network analysis of the code. This method is presented on the example of the code of ethics of the Fiscalía General de la Nación, Colombia (2008). The proposed method is able to detect, in a detailed manner, emphasis as well as biases in the values' structure of codes of ethics. Thus, it is possible to propose revisions of codes of ethics that are guided by the organization's strategic values. The proposed method fills a void in the literature in relation to general methods for the analysis of codes of ethics with strategic goals. [ABSTRACT FROM AUTHOR]

In recent decades, the design of public policies has gathered diverse disciplines to propose new ways to build knowledge destined to heed society's needs and opportunities. In Latin America, the multicultural and pluriethnic character of the societies has supposed special interest to their design. The case studies allow to locate experiences and to build comparisons and detailed and complex readings of the phenomena present within the territories. Through the compared analysis of four experiences led by the National University of Colombia, with a social innovation approach, this paper describes the contrasts and nuances found in the interaction of local ecosystems of collaboration. Morin's complex thinking, and the social innovation approach are proposed to analyze the contributions of the academy in the scenario of peacebuilding, through the role of mediation in the interaction of local knowledge. This is fundamental for the consolidation of territorial communal processes, and to establishing potential recommendations for the multi-stakeholder design of public policies in the pos-accords scenario. [ABSTRACT FROM AUTHOR]

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Derecho del Estado is the property of Universidad Externado de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)