Propuestas organizacionales para la administración del cambio

1 archivo PDF ( 10 páginas) .magyeamcRESUMEN: La autora reflexiona sobre el ejercicio de la administración hace el siglo XXI, considerando que ésta debe indagar acerca de métodos propicios para alcanzar un equilibrio entre lo deseado y lo posible mediante el desarrollo de modelos y técnicas . Este ensayo expone en forma resumida algunas de las ventajas y desventajas de las nuevas prácticas y propuestas en auge para el llamado del nuevo milenio: desarrollo organizacional; reingeniería en procesos de negocios; calidad total; norma ISO 9000; justo n time; Benchmarking; Empowerment; los equipos de trabajo auto dirigidos; enfoque de sistemas; Outsourcing y Downsizing. Abstract: The author reflects on the exercise of the twenty-first century management, considering that it should inquire about enabling methods to achieve a balance between the desired and the possible by developing models and techniques. This paper sets out in summary form some of the advantages and disadvantages of new practices and proposals for the booming call of the new millennium: organizational development; business process reengineering; total quality; ISO 9000; just n time; benchmarking; Empowerment; the self-directed work teams; systems approach; Outsourcing and Downsizing. Palabras clave: Técnicas y modelos. KEYWORDS: Techniques and models

Hamilton-Jacobi theory in multisymplectic classical field theories

The geometric framework for the Hamilton-Jacobi theory developed in previous works is extended for multisymplectic first-order classical field theories. The Hamilton-Jacobi problem is stated for the Lagrangian and the Hamiltonian formalisms of these theories as a particular case of a more general problem, and the classical Hamilton-Jacobi equation for field theories is recovered from this geometrical setting. Particular and complete solutions to these problems are defined and characterized in several equivalent ways in both formalisms, and the equivalence between them is proved. The use of distributions in jet bundles that represent the solutions to the field equations is the fundamental tool in this formulation. Some examples are analyzed and, in particular, the Hamilton-Jacobi equation for non-autonomous mechanical systems is obtained as a special case of our results.Comment: 44 p

The initial-final mass relationship of white dwarfs in common proper motion pairs

A promising approach to decrease the uncertainties in the initial-final mass relationship, which is still poorly constrained, is to study white dwarfs for which external constraints are available, for instance, white dwarfs in common proper motion pairs (CPMPs). Important information of the white dwarf can be inferred from the study of the companion, since they were born at the same time and with the same initial chemical composition. In this contribution, we report new results obtained from spectroscopic observations of both members of several CPMPs composed of a F, G or K type star and a DA white dwarf

A refined sub-grid model for black hole accretion and AGN feedback in large cosmological simulations

In large scale cosmological hydrodynamic simulations simplified sub-grid models for gas accretion onto black holes and AGN feedback are commonly used. Such models typically depend on various free parameters, which are not well constrained. We present a new advanced model containing a more detailed description of AGN feedback, where those parameters reflect the results of recent observations. The model takes the dependency of these parameters on the black hole properties into account and describes a continuous transition between the feedback processes acting in the so-called radio-mode and quasar-mode. In addition, we implement a more detailed description of the accretion of gas onto black holes by distinguishing between hot and cold gas accretion. Our new implementations prevent black holes from gaining too much mass, particularly at low redshifts so that our simulations are now very successful in reproducing the observed present-day black hole mass function. Our new model also suppresses star formation in massive galaxies slightly more efficiently than many state-of-the-art models. Therefore, the simulations that include our new implementations produce a more realistic population of quiescent and star-forming galaxies compared to recent observations, even if some discrepancies remain. In addition, the baryon conversion efficiencies in our simulation are - except for the high mass end - consistent with observations presented in literature over the mass range resolved by our simulations. Finally, we discuss the significant impact of the feedback model on the low-luminous end of the AGN luminosity function.Comment: 25 pages, 19 figures. MNRAS accepted. Magneticum website: http://www.magneticum.or

G4.5 Pamam Dendrimer-Risperidone: Biodistribution and Behavioral Changes in In Vivo Model

Dendritic polymers are considered as emerging and outstanding carriers as modern medicinal systems due to their derivatisable branched architecture and possibility to modify them in numerous ways. Here, G4.5 PAMAM dendrimers were obtained as carriers of the antipsychotic drug risperidone. Despite their extensive applicability in the pharmaceutical field, the use of dendrimers as carriers in biological systems is constrained due to their inherent associated toxicity. The biocompatibility of dendrimers and dendrimer-risperidone complexes was evaluated in vivo for biological performance. To this end, the pharmacokinetics and biodistribution after oral treatment of free risperidone and dendrimer-risperidone complexes were studied in healthy mice. Also, the behavioral changes such as locomotion, aggression, dominance in male and female mice were evaluated both after a single dose and after daily therapy for 8 days. Also, in vivo effects of risperidone and dendrimer-risperidone complexes on the locomotion of zebrafish larvae were explored. The data obtained suggest that the unmetabolized risperidone complexes increase the arrival to the brain after 90 minutes. On the other hand, behavioral studies showed an increase in the potency of the drug in animals treated with the complexesFil: Prieto, Maria Jimena. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: del Rio Zabala, Nahuel Eduardo. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Marotta, Cristian Hernán. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Bichara, Darío Román. Fundación Instituto Leloir; ArgentinaFil: Simonetta, Sergio Hernan. Fundación Instituto Leloir; ArgentinaFil: Chiaramoni, Nadia Silvia. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Alonso, Silvia del Valle. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentin

An Incremental and Model Driven Approach for the Dynamic Reconfiguration of Cloud Application Architectures

In incremental development approaches, the integration of new services into the actual cloud application may trigger the dynamic reconfiguration of the cloud application architecture, thus changing its structure and behavior at runtime. This paper presents a model driven approach that uses the specification of how the integration of new services will change the current cloud application architecture to obtain: i) the orchestration of services, ii) skeletons of interface implementations, and iii) the operationalization of reconfiguration actions to be applied at runtime. This approach follows the DIARy-process, which defines the activities needed to reconfigure dynamically the architecture of cloud services. The feasibility of the approach is illustrated by means of a case study that uses Microsoft Azure© as a service deployment platform. WCF Workflow services are generated and deployed for orchestration, whereas XML transformation files are generated to update services’ binding configurations at runtim

Ideal structures in vector-valued polynomial spaces

This paper is concerned with the study of geometric structures in spaces of polynomials. More precisely, we discuss for E and F Banach spaces, whether the class of n-homogeneous polynomials, 'P-w((n) E, F), which are weakly continuous on bounded sets, is an HB-subspace or an M(1, C)-ideal in the space of continuous n-homogeneous polynomials, P((n) E, F). We establish sufficient conditions under which the problem can be positively solved. Some examples are given. We also study when some ideal structures pass from P-w((n) E, F) as an ideal in P((n) E, F) to the range space F as an ideal in its bidual F**

Una herramienta informática en la resolución de problemas

La influencia de la informática, más concretamente de la computadora, en el campo de la educación matemática, trajo como consecuencia el replanteamiento en la enseñanza – aprendizaje de problemas y su tratamiento con Software específicos. El artículo relata la actividad realizada con un grupo de alumnos de carreras no matemáticas con la metodología de aula-taller. Teniendo en cuenta que los estudiantes en general, tienen dificultades en tratar situaciones específicas a sus carreras, implementamos un Taller de resolución de problemas con la aplicación de una herramienta informática. En la experiencia los participantes analizaron diversas estrategias para la resolución de situaciones problemáticas y adquirieron conocimientos básicos de una herramienta que les permitió autogestionar su aprendizaje y consolidar su formación profesional

Influencia de varias formulaciones de suavizantes sobre las propiedades impartidas al algodón por un acabado de fácil cuidado

En las recetas para el acabado de fácil cuidado con resinas se suele añadir un suavizante para mejorar el tacto del tejido. En este trabajo se determina la influencia de varios suavizantes de diferente naturaleza química, aplicados en una formulación de acabado de fácil cuidado con una resina reactante libre de formaldehido, sobre los siguientes parámetros: Estabilidad dimensional, efecto inarrugable, resistencia a la tracción, a la abrasión, humectabilidad, rigidez a la flexión y retención de cloro. De los efectos de acabado obtenidos se deduce que no existe una fórmula suavizante que resulte la óptima en relación a todos los parámetros determinados; no obstante se pueden establecer prioridades en cuanto a los efectos del suavizante en función de los parámetros que se consideran más importantes de acuerdo con el uso final del artículo textil.A softener is usually added in formulations with resins, in order to improve the fabric’s feel. This paper determines the influence of several softeners of various chemical compositions applied in a formulation of easy-care finish with a formaldehyde-free reactant resin according to the following parameters: dimensional stability, noncrease effect, tensile strength, resistance to abrasion, wettability, bending rigidity and chloride retention. From the finishes obtained we can deduce that there is no optimum softener formula for all parameters studied. However, it is possible to establish priorities for the effects of the softener according to the parameters considered most important for the final use the textile product.Dans les recettes donnant un finissage facile à entretenir avec des résines, on ajoute habituellement un adoucissant pour améliorer le toucher du tissu. Ce travail a déterminé l’influence de plusieurs adoucissants de différentes natures chimiques, appliqués dans une formulation de finissage facile à entretenir avec un réactant résine sans formaldéhyde, sur les paramètres suivants : stabilité dimensionnelle, effet infroissable, résistance à la traction, à l’abrasion, transfert d’humidité, rigidité à la flexion et rétention de chlore. Des effets de finissage obtenus, il ressort qu’il n’y a pas de formule adoucissante optimale par rapport à tous les paramètres déterminés; néanmoins, certaines priorités peuvent être établies quant aux effets de l’adoucissant en fonction des paramètres jugés prioritaires, selon l’usage final de l’article textil