Metodología para el desarrollo de la competencia para gestionar negocios en la carrera ingeniería de sistemas de información

Nota: Artículo derivado de tesis doctoral de igual título aprobada en mayo de 2009.El proceso formativo de los ingenieros en sistemas de información presenta una brecha en el rol de las dimensiones tecnológica y administrativa, que intervienen en el necesario desarrollo de competencias profesionales y que impactan el desempeño de esos ingenieros. En respuesta a tal contradicción, el presente trabajo tiene la finalidad esencial de diseñar una metodología sustentada en un modelo teórico de desarrollo de la competencia para gestionar negocios, en los estudiantes de la carrera de Ingeniería de Sistemas de Información. En correspondencia con lo anterior, los resultados fundamentales aportados por la investigación son el modelo y la metodología para el desarrollo de la competencia para gestionar negocios, los que fueron sometidos a la valoración de expertos que concluyeron con criterios favorables sobre su factibilidad de implementación. La metodología fue aplicada a un grupo de estudiantes de la asignatura Sistema de Gestión de Información, durante dos cuatrimestres del 2008. De dicha aplicación se obtuvieron evidencias acerca del desarrollo de la competencia para gestionar, lo que se manifiesta a través de los resultados de los instrumentos aplicados al concluir su ejecución

Organizaciones resilientes, invariancia y cambio en el sistema

Resiliencia es anticipación y adaptación a tendencias profundas y de largo plazo que pueden interferir con la capacidad de producir los resultados esperados, la propuesta de Hamel y Valikangas es cero trauma en la organización, lo que implica la habilidad para reinventar dinámicamente los modelos de negocios y las estrategias al mismo tiempo que las circunstancias y el entorno cambian, sin sorpresas, sin cambios bruscos, sin profundas reingenierías. Este artículo establece una manera de abordar la sencilla receta que platean estos autores a partir de la propuesta de los profesores Etkin y Schvarstein, esto es: identificación de la invariancia, la estructura y los dominios de la organización y de las relaciones que entre ellos existen.Resilience is anticipating and adapting to trends profound and long-term that may interfere with the ability to produce the expected results, the proposed from Hamel and Valikangas is trauma zero in the organization, which includes the ability to dynamically reinvent business models and strategies at the same time as changing circumstances and environment, with no surprises, no sudden changes, without deep reengineering. This article provides a simple way of dealing with the recipe silver these authors from the proposal of the teachers Etkin and Schvarstein, it is: identification of the invariance, the structure and domains of the organization and the relationships that exist between them

Proximity to the indigencia. About the informal economy

En este breve escrito el autor presenta un análisis de las características y la dimensión real de la economía informal, y de las condiciones actuales del mercado mundial que la acrecientan. En la primera parte ofrece un paralelo entre la economía formal y la informal desde diferentes perspectivas: institucionalidad, proceso productivo, innovación e invención, productividad y competitividad, finanzas, gestión y trabajo. En la segunda alude a las nuevas realidades que en la actualidad generan informalidad y exclusión social, como son el fundamentalismo del mercado, el determinismo circular del mercado, el crecimiento sin empleo, el fomento y la diversificación del outsourcing, la consolidación de un sistema dual pero continuo, la ausencia de intervención estatal con criterio social y las políticas y prácticas antiinmigratorias.In this brief paper the author refers to the informal economy features and dimension as well as the today market conditions that increase it. In the first part a parallel between the formal and the informal economies is offered in terms of institutional framework, productive process, productivity and competitiveness, innovation and invention, finances, management and labour. In the second one an approach is offered to the new realities that in the global economy increase informality and social exclusion as market fundamentalism, circular market determinism, growth without employment, outsourcing diversification, consolidation of a dual but continuous system, social inspired governmental intervention absence and migration discriminatory practices and policies

Bounded Confidence under Preferential Flip: A Coupled Dynamics of Structural Balance and Opinions

In this work we study the coupled dynamics of social balance and opinion formation. We propose a model where agents form opinions under bounded confidence, but only considering the opinions of their friends. The signs of social ties -friendships and enmities- evolve seeking for social balance, taking into account how similar agents' opinions are. We consider both the case where opinions have one and two dimensions. We find that our dynamics produces the segregation of agents into two cliques, with the opinions of agents in one clique differing from those in the other. Depending on the level of bounded confidence, the dynamics can produce either consensus of opinions within each clique or the coexistence of several opinion clusters in a clique. For the uni-dimensional case, the opinions in one clique are all below the opinions in the other clique, hence defining a "left clique" and a "right clique". In the two-dimensional case, our numerical results suggest that the two cliques are separated by a hyperplane in the opinion space. We also show that the phenomenon of unidimensional opinions identified by DeMarzo, Vayanos and Zwiebel (Q J Econ 2003) extends partially to our dynamics. Finally, in the context of politics, we comment about the possible relation of our results to the fragmentation of an ideology and the emergence of new political parties.Comment: 8 figures, PLoS ONE 11(10): e0164323, 201

Pipeline-Based Power Reduction in FPGA Applications

This paper shows how temporal parallelism has an important role in the power dissipation reduction in the FPGA field. Glitches propagation is blocked by the flip-flops or registers in the pipeline. Several multiplication structures are implemented over modern FPGAs, StratixII and Virtex4, comparing their results with and without pipeline and hardware duplication

Cytochrome c signalosome in mitochondria

Cytochrome c delicately tilts the balance between cell life (respiration) and cell death (apoptosis). Whereas cell life is governed by transient electron transfer interactions of cytochrome c inside the mitochondria, the cytoplasmic adducts of cytochrome c that lead to cell death are amazingly stable. Interestingly, the contacts of cytochrome c with its counterparts shift from the area surrounding the heme crevice for the redox complexes to the opposite molecule side when the electron flow is not necessary. The cytochrome c signalosome shows a higher level of regulation by post-translational modifications—nitration and phosphorylation—of the hemeprotein. Understanding protein interfaces, as well as protein modifications, would puzzle the mitochondrial cytochrome c-controlled pathways out and enable the design of novel drugs to silence the action of pro-survival and pro-apoptotic partners of cytochrome c.Spanish Ministry of Science and Innovation BFU2009-07190Andalusian Government BIO198 P08-CVI-387

NRT2.5 a putative sodium dependent high affinity nitrate trasnporter of zostera marina l.

Seagrasses are the only group of vascular plants that recolonized the marine environment, possibly the most severe habitat shift ever accomplished by flowering plants. These plants have regained functions enabling them to thrive in liquid medium with an extremely high salinity (0.5 M Na+), high alkaline conditions (pH 8.2) and very low concentration of essential nutrients as NO3- or Pi. Despite this, seagrasses form one of the highest productive and widespread ecosystems of the planet (Larkum et al., 2006). Zostera marina was the first seagrass fully sequenced and its genome reveals important insights about this secondary adaption. Comparison with land plants indicates that less than 20 % of the genes families are specific in the genome of seagrasses. Thus, adaptation to marine environment seems to be due to molecular changes of the same family genes rather that the speciation of pre-existing genes. This appears to be the case of the high affinity nitrate transporter belonging to the NRT family. In contrast to terrestrial vascular plants, where NRT2 encode high affinity NO3- transporters that operate as H+ symporters, our electrophysiological analysis indicate that in Z. marina high affinity NO3- uptake is mediated by a Na+-dependent mechanism. A detailed analysis of the Z. marina genome indicates the presence of only one gene encoding for this type of transporter: Zosma70g00300.1. Phylogenetic analysis shows that this high affinity nitrate transporter is more related to NRT2.5 than to NTRT2.1, sharing a common ancestor with both, monocot and dicot plants. We have cloned Zosma70g00300.1 and the high-affinity nitrate transporter accessory protein NAR2 (Zosma63g00220.1) in order to characterize the specific transport mechanism mediated by these proteins in Z. marina. Thus, the putative Z. marina NRT2.5 transporter could have evolved to use Na+ as a driving ion, which might be an essential adaptation of seagrasses to colonize the marine environment.MICINN (BFU2017-85117-R; BIO2016-81957-REDT) Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Hypercube algorithms on mesh connected multicomputers

A new methodology named CALMANT (CC-cube Algorithms on Meshes and Tori) for mapping a type of algorithm that we call CC-cube algorithm onto multicomputers with hypercube, mesh, or torus interconnection topology is proposed. This methodology is suitable when the initial problem can be expressed as a set of processes that communicate through a hypercube topology (a CC-cube algorithm). There are many important algorithms that fit into the CC-cube type. CALMANT is based on three different techniques: (a) the standard embedding to assign the processes of the algorithm to the nodes of the mesh multicomputer; (b) the communication pipelining technique to increase the level of communication parallelism inherent in the CC-cube algorithms; and (c) optimal message-scheduling algorithms proposed in this work in order to avoid conflicts and minimizing in this way the communication time. Although CALMANT is proposed for multicomputers with different interconnection network topologies, the paper only focuses on the particular case of meshes.Peer ReviewedPostprint (published version

A study of the communication cost of the FFT on torus multicomputers

The computation of a one-dimensional FFT on a c-dimensional torus multicomputer is analyzed. Different approaches are proposed which differ in the way they use the interconnection network. The first approach is based on the multidimensional index mapping technique for the FFT computation. The second approach starts from a hypercube algorithm and then embeds the hypercube onto the torus. The third approach reduces the communication cost of the hypercube algorithm by pipelining the communication operations. A novel methodology to pipeline the communication operations on a torus is proposed. Analytical models are presented to compare the different approaches. This comparison study shows that the best approach depends on the number of dimensions of the torus and the communication start-up and transfer times. The analytical models allow us to select the most efficient approach for the available machine.Peer ReviewedPostprint (published version

Cytochrome c: Surfing Off of the Mitochondrial Membrane on the Tops of Complexes III and IV

The proper arrangement of protein components within the respiratory electron transport chain is nowadays a matter of intense debate, since altering it leads to cell aging and other related pathologies. Here, we discuss three current views-the so-called solid, fluid and plasticity models-which describe the organization of the main membrane-embedded mitochondrial protein complexes and the key elements that regulate and/or facilitate supercomplex assembly. The soluble electron carrier cytochrome c has recently emerged as an essential factor in the assembly and function of respiratory supercomplexes. In fact, a 'restricted diffusion pathway' mechanism for electron transfer between complexes III and IV has been proposed based on the secondary, distal binding sites for cytochrome c at its two membrane partners recently discovered. This channeling pathway facilitates the surfing of cytochrome c on both respiratory complexes, thereby tuning the efficiency of oxidative phosphorylation and diminishing the production of reactive oxygen species. The well-documented post-translational modifications of cytochrome c could further contribute to the rapid adjustment of electron flow in response to changing cellular conditions.Spanish Ministry of Economy and Competitiveness (BFU2015-71017/BMC MINECO/FEDER and PGC2018-096049-B-I00 BIO/BMC MICINN/FEDER, EU