New delay-dependent stability criteria for uncertain neutral systems with mixed time-varying delays and nonlinear perturbations

The problem of stability analysis for a class of neutral systems with mixed time-varying neutral, discrete and distributed delays and nonlinear parameter perturbations is addressed. By introducing a novel Lyapunov-Krasovskii functional and combining the descriptor model transformation, the Leibniz-Newton formula, some free-weighting matrices, and a suitable change of variables, new sufficient conditions are established for the stability of the considered system, which are neutral-delay-dependent, discrete-delay-range dependent, and distributeddelay-dependent. The conditions are presented in terms of linear matrix inequalities (LMIs) and can be efficiently solved using convex programming techniques. Two numerical examples are given to illustrate the efficiency of the proposed method

Museologial process : exclusion criteria

In the last few years, reflections around knowledge building in the museology area have increased considerably, allowing us to cast many gazes over our actions, and, consequently, enabling us to a wider debate around our professional action field, decreasing our exclusion from the academic environment – museologists reproducing the knowledge produced in other areas. In the present work, we shall approach some issues related to the museological process, taking as a reference several studies about the subject, which, due to the time given to us in this round table, could not be re-presented here for discussion. Besides, we have dedicated a chapter to such approach in our publication titled “Museological Process and Education: building a didactic-community museum”. So we have opted instead to carry out a reflection about exclusion, looking into the museum institution and into the application of museological processes; in other words, we shall carry out a self-criticism, in which I include myself, affecting an analysis that will be debated here, considering, additionally, that the museums and museological practices are in relation to the other social global practices, therefore, they are the result of human relations at each historical moment. Finally, based on our lived experience, we shall give continuity to our reflection process, highlighting the importance of knowledge production for the area of museology and the relevance of the theory-practice relation, punctuating some aspects we think that may contribute to the construction of a museological action that may serve as a historical elaboration in securing a space for self- determination.

Las disposiciones legales que desarrollan los preceptos constitucionales sobre la inversión privada extranjera en el Ecuador (Tema Central)

El presente artículo presenta un análisis del régimen vigente en materia de la inversión privada extranjera, partiendo de las disposiciones pertinentes incorporadas en el código orgánico de la Producción, comercio e Inversiones (dic. 2010), cotejando las mismas frente a los preceptos establecidos por la constitución de la República del Ecuador relativos al sistema económico y otros ámbitos pertinentes. La evaluación se complementa contrastando las disposiciones legales de reciente vigencia, a los criterios de consistencia de los correspondientes lineamientos del esquema de planificación gubernamental y a varios principios del sistema de reglas internacionales sobre la inversión. Se aportan, finalmente, conclusiones sobre probables líneas de ajuste normativo futuras, resultantes de dicho proceso de comparación analítica.