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Weak and Strong Time Consistency  [PDF]
Romar Correa
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.21015
Abstract: We motivate and provide proofs of Ba?ar and Olsder’s (1995) theorems on the subject. The context is the increasing appreciation that the neoclassical framework is not the only model of the economy.
Rentiers and Workers-Capitalists in a Non-Classical Model  [PDF]
Romar Correa
Journal of Mathematical Finance (JMF) , 2013, DOI: 10.4236/jmf.2013.32A002
Abstract:

We separate the rentier portion of the budget constraint of the representative agent from the income-plus-distributed profits segment. The former’s wealth consists exclusively of returns on government bonds, the latter’s wealth is wage income from working for firms plus the distributed profits of the latter. The non-neoclassical element is the non-imposition of the market-clearing assumption. The Barro-Ricardo theorem only applies to rentiers. The level of activity is shown to depend on the level of employment along with a set of parameters that capture the imperfect competition of the model.

The Temporal Variability of the Freshwater Discharge and Water Levels at the Patos Lagoon, Brazil  [PDF]
Wiliam Correa Marques
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.34076
Abstract: The direct influence of freshwater discharge along the coastal regions is observed in several processes following a wide spectrum on spatial and temporal variability. The knowledge of relative importance of this physical forcing is fundamental by the correct management of the coastal sites and the understanding of consequences associated with processes of climatic order is one point deserves some investigation. The major part of the studies in the Patos Lagoon, located in the southernmost part of Brazil, is limited to investigate the effects in synoptic time scales. In this way, the objective of this study is to investigate the long term variability pattern of the Patos Lagoon discharge and water levels indentifying long term trends through wavelet analysis. The results indicated that El Ni?o (La Ni?a) events promote the intensification (decrease) of the freshwater intensity in the principal river tributaries of the Patos Lagoon following scales from 16 to 120 months (from 1.3 to 10 years). The most energetic cycle is centered in periods of 64 months (5.3 years). The longer events reflect the long term response of the non linear dynamics in Equatorial Pacific changing the precipitation pattern, principally during winter and at the end of spring and early autumn. The non-linear long term trend indicates a pattern with values of discharge normally above (below) the mean after (before) 1970’s. An increasing trend starting after 1970 possibly indicates a longer term cycle influencing the interannual variability of the Patos Lagoon discharge. The seasonality is maintained in climatic monthly means obtained after and before 1970’s, but, with mean increase around 364 m3·s?1 in freshwater discharge with reduced amplitude of the seasonal cycle.
Self-organization through decoupling
Romar Correa
Discrete Dynamics in Nature and Society , 2000, DOI: 10.1155/s102602260000039x
Abstract: In one line of research, the transition from Fordism to flexible specialisation is explained by the infeasibility of a mode of regulation that relied on central controls. According to another explanation, which we favour, the disintegration of vertically integrated production is unpredictable. The concept of self-organization is often recommended to model the transition from hierarchical organizational forms to flatter structures. Formally, a conditionally stable nonlinear system of differential equations is examined. In the first thesis, the characteristic roots with positive real parts play the role of ‘order’ parameters which can become unstable modes. The rest of the variables refer to stable modes. The strategy is to show that the stable modes can be expressed in terms of the unstable modes so that the former can be eliminated from the system. On the other hand, we provide a theorem showing that a coupled set of differential equations can become uncoupled and vice versa as an argument in favour of the second thesis. The path of evolution can turn both ways.
Exploring Academic Writing and Voice in ESL Writing
Correa,Doris;
íkala, Revista de Lenguaje y Cultura , 2009,
Abstract: this literature review explores two basic questions: first, why have english as a second language (esl)/english as a foreign language (efl) academic writing courses not been able to signi?cantly help esl/efl students meet the academic writing demands of their university courses? second, how can esl/efl writing instructors better help these students succeed in their undergraduate courses? to respond to these questions, the author reviews how notions of academic writing, text, and voice have changed over time, and how these changes have in?uenced (esl) and (efl) writing approaches and methodologies. the author also presents some of the critiques that scholars have posed regarding each of these notions, approaches and methodologies, and draws some conclusions based on these critiques.
A resolu??o oral de tarefas de divis?o por crian?as
Correa, Jane;
Estudos de Psicologia (Natal) , 2004, DOI: 10.1590/S1413-294X2004000100016
Abstract: the present study examines mental computational solutions to elementary partitive and quotitive problems given by children aged 6-9 with different levels of arithmetical knowledge. there were four sizes of dividend (4, 8, 12 and 24) and two different divisors (2 and 4). children's performance improved both with age and schooling since these variables are confounded. their performance was overall affected by both the size of the dividend and the divisor. procedures based on double counting and multiplicative facts were more used in quotitive tasks. on the other hand, procedures related to repeated addition and partition of quantities were more frequently used to solve partitive tasks. a small percentage of procedures based on repeated subtraction was observed, suggesting that repeated subtraction cannot be considered as an intuitive procedure associated with division.
La tasa social de descuento y el medio ambiente
Correa,Francisco;
Lecturas de Economía , 2006,
Abstract: the purpose of this article is to analyze the main methodologies put forward for the determination of the social rate of discount in order to describe the central elements that allow to link environmental concerns to the existing alternatives for the determination of this rate. through the application of an aggregate economic model that connects externalities and intertemporal discounting, a social rate of discount is obtained for colombia in two settings. the conclusion is that the stylized facts about the evolution of environmental effects can imply a systematically lower social rate of discount across time; thus affecting not only the levels of the social rate of discount, but also its profile across time.
El humor como estrategia de cortesía positiva en De oratore, 2. 216-90
Correa,Soledad;
Argos , 2009,
Abstract: in spite of their unquestionable elements of idealization, critics have pointed out the importance of de oratore as a source for the study of the roman aristocracy's social practices. the analysis of one of the basic resources of "positive courtesy" - i.e. humor - in the excursus de ridiculis shows that it is presented as a powerful catalyst for social intercourse. as long as it fits to some sort of "laughable ethics", humor would be a key factor in creating solidarity among elite members, whose relationships present, as a rule, a strong agonistic slant.
Autofiguración epistolar y construcción del destinatario en la correspondencia ciceroniana del exilio1: la imagen de Terencia en Fam. 14.1-4
Correa,Soledad;
Argos , 2011,
Abstract: the letters that cicero addressed to his wife during the period of his exile show that he hoped that terentia acted publicly to look after his interests. if we assume that a person’s self-image depends necessarily on the i-you relationship (amossy, 2010: 105), the present paper will explore how cicero’s discursive picture of terentia could be seen not only as a way of increasing his possibilities of self-fashioning in a moment when his public identity was seriously under threat, but also as a strategy aimed at shaping his addressee as a key factor to ensure his reditus.
Perversión lingüística y decadencia política en el discurso C. Licinius Macer (Salustio. Historias 3. 48)
Correa,Soledad;
Circe de cl??sicos y modernos , 2007,
Abstract: the current article intends to analyze the arguments presented by the tribune of the plebs macer, with special emphasis in his condemnation of the use of honesta nomina in order to conceal the pursuit of selfish aims. starting from the hypothesis that the censure that sallust puts in macer's mouth becomes functional because it allows him to conjugate linguistics and literature with politics, we will try to outline that his concern about lexical perversion is fundamentally about ethics and politics and that it is in the same line as his recovery of the historical writing as a service to the res publica.
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