Multiplicative structures of hypercyclic functions for convolution operators

In this note, it is proved the existence of an infinitely generated multiplicative group consisting of entire functions that are, except for the constant function 1, hypercyclic with respect to the convolution operator associated to a given entire function of subexponential type. A certain stability under multiplication is also shown for compositional hypercyclicity on complex domains.Comment: 12 page

Develop a model of project management about consulting in water resources based on guidelines of PMBOK

El artículo presenta un modelo de gestión de proyectos que aplica y ajusta los procesos planteados para el alcance, el tiempo y los costos de metodologías tradicionales en proyectos de recursos hídricos de consultoría. El modelo es válido durante la fase precontractual cuando el proyecto es una propuesta y la fase contractual entendida como la ejecución del objeto del contrato bajo las condiciones de la entidad contratante. El modelo como metodología plantea en la fase precontractual la participación del grupo directivo y técnico con el objeto de realizar una evaluación de entregables que conduzca a una estimación de costos más precisa. Mientras en la fase contractual se consideró la integración y participación de un profesional de control proyecto con el grupo especialista y directivo para acompañar y consolidar los recursos a asignar y fijar el listado de entregables que genere las actividades, la EDT, el cronograma y el presupuesto a través del uso de la herramienta MS Project, de igual manera este profesional realiza el control del avance del proyecto a través de la técnica del valor ganado. Como resultado relevante se tiene que los entregables y sus recursos deben ser realizados por un grupo multidisciplinario, y a su vez integrados por un profesional de control proyecto para obtener un único alcance, presupuesto y cronograma aprobado por la entidad contratante, con el cual se cree una línea base y un control mensual que se reporte de forma oportuna a la gerencia.This paper discusses a project management model that applies and adjusts traditional processes and methodologies in consulting projects of water resources. This adapted model is valid during the pre-contractual stage when the project is just a proposal, and contractual stage, that is during ejecution stage, all subject to the conditions of the procuring entity. This one can be used during steps of prefractabilty, factibility, basic designs and detailed designs. It is proposed that during pre-contractual stage, management team and technical one do a evaluation of project products to obtain a more accurate cost estimation. As during contractual stage, it was considered the position of control project. This member of management team must follow and consolidate all assigned resources to the project, also he must to establish the list of products and check the WBS, schedule and budget by aid of MS Project. Him must control project progress through the technique of earn value. As a relevant result, the resources and products of project must be defined by a multidisciplinary team, and integrated by professional control project to obtain the scope, schedule and budget approved by the contracting entity. Control project must establish a project base line and make a monthly control to report to management team

The Philippines: External Shocks, Adjustment Policies and Impact on Selected Development Concerns, 1973-1985

With the objective of designing and implementing more effective policies and programs in the light of external shocks, this paper assesses the impact of economic crisis and adjustment policies on basic economic and social concerns particularly on vulnerable income groups. The development path implied in this article is a strategy that is expansionary within the limits set by external finance and other policy considerations.vulnerable groups, adjustment policies

A functional RNase P protein subunit of bacterial origin in some eukaryotes

RNase P catalyzes 5′-maturation of tRNAs. While bacterial RNase P comprises an RNA catalyst and a protein cofactor, the eukaryotic (nuclear) variant contains an RNA and up to ten proteins, all unrelated to the bacterial protein. Unexpectedly, a nuclear-encoded bacterial RNase P protein (RPP) homolog is found in several prasinophyte algae including Ostreococcus tauri. We demonstrate that recombinant O. tauri RPP can functionally reconstitute with bacterial RNase P RNAs (RPRs) but not with O. tauri organellar RPRs, despite the latter’s presumed bacterial origins. We also show that O. tauri PRORP, a homolog of Arabidopsis PRORP-1, displays tRNA 5′-processing activity in vitro. We discuss the implications of the striking diversity of RNase P in O. tauri, the smallest known free-living eukaryote.Ministerio de Ciencia e Innovación European Regional Fund BFU2007-60651Junta de Andalucía P06-CVI-01692National Science Foundation MCB-0238233 MCB-0843543European Union ASSEMBLE 22779

NMR Detection of Temperature-Dependent Magnetic Inhomogeneities in URu2Si2

We present 29Si-NMR relaxation and spectral data in URu2Si2. Our echo-decay experiments detect slowly fluctuating magnetic field gradients. In addition, we find that the echo-decay shape (time dependence) varies with temperature T and its rate behaves critically near the Neel temperature TN, indicating a correlation between the gradient fluctuations and the transition to small-moment order. T-dependent broadening contributions become visible below 100 Kelvin and saturate somewhat above TN, remaining saturated at lower temperatures. Together, the line width and shift suggest partial lattice distortions below TN. We propose an intrinsic minority phase below $T_{\rm N}$ and compare our results with one of the current theoretical models.Comment: 2 pages RevTeX, 1 figure, SCES 99-Japan, to appear in Physica

J D Bernal: philosophy, politics and the science of science

This paper is an examination of the philosophical and political legacy of John Desmond Bernal. It addresses the evidence of an emerging consensus on Bernal based on the recent biography of Bernal by Andrew Brown and the reviews it has received. It takes issue with this view of Bernal, which tends to be admiring of his scientific contribution, bemused by his sexuality, condescending to his philosophy and hostile to his politics. This article is a critical defence of his philosophical and political position

J D Bernal: philosophy, politics and the science of science

This paper is an examination of the philosophical and political legacy of John Desmond Bernal. It addresses the evidence of an emerging consensus on Bernal based on the recent biography of Bernal by Andrew Brown and the reviews it has received. It takes issue with this view of Bernal, which tends to be admiring of his scientific contribution, bemused by his sexuality, condescending to his philosophy and hostile to his politics. This article is a critical defence of his philosophical and political position