Chandra Observation of the Interaction of the Radio Source and Cooling Core in Abell 2063

We present the results of a Chandra observation of the cooling core cluster Abell 2063. Spectral analysis shows that there is cool gas (2 keV) associated with the cluster core, which is more than a factor of 2 cooler than the outer cluster gas (4.1 keV). There also is spectral evidence for a weak cooling flow, Mdot ~ 20 Msun/yr. The cluster exhibits a complex structure in the center that consists of several bright knots of emission, a depression in the emission to the north of the center of the cluster, and a shell of emission surrounding it. The depression in the X-ray emission is coincident with the position of the north-eastern radio lobe of the radio source associated with the cluster-central galaxy. The shell surrounding this region appears to be hotter, which may be the result of a shock that has been driven into the gas by the radio source. The power output of the radio source appears to be sufficient to offset the cooling flow, and heating of the gas through shocks is a possible explanation of how the energy transfer is established.Comment: Astrophysical Jounal, in press, 26 page with 9 figures, some in color. Uses AASTEX late

La desincorporación de las empresas del Estado

A partir de 1983 el gabinete económico aplicó una ideología neoliberal de mercado caracterizada por la revisión de la política de Estado en diferentes áreas de la vida socieconómica del país. La administración de Migule de la Madrid emprendió una batalla contra las mepresas públicas, que no conocía la historia mexicana, e hizo de la desincorporación la bandera de su política de modernización. En este proceso de venta de paraestatales los compradores particulares se mostraron más interesados en adquirir empresas que tuvieran mayor rentabilidad y no fueran una remora para sus ganancias

Efficient Evaluation of Data-intensive Batch-queries in Open Simulation Laboratories

Better instruments, faster and bigger supercomputers and easier collaboration and sharing of data in the sciences have introduced the need to manage increasingly large datasets. Advances in high-performance computing (HPC) have empowered many science disciplines' computational branches. However, many scientists lack access to HPC facilities or the necessary sophistication to develop and run HPC codes. The benefits of testing new theories and experimenting with large numerical simulations have thus been restricted to a few top users. In this dissertation, I describe the ``remote immersive analysis" approach to computational science and present new techniques and methods for the efficient evaluation of scientific analysis tasks in analysis cluster environments. I will discuss several techniques developed for the efficient evaluation of data-intensive batch-queries in large numerical simulation databases. An I/O streaming method for the evaluation of decomposable kernel computations utilizes partial-sums to evaluate a batch query by performing a single sequential pass over the data. Spatial filtering computations, which use a box filter, share not only data, but also computation and can be evaluated over an intermediate summed volumes dataset derived from the original data. This is more efficient for certain workloads even when the intermediate dataset is computed dynamically. Threshold queries have immense data requirements and potentially operate over entire time-steps of the simulation. An efficient and scalable data-parallel approach evaluates threshold queries of fields derived from the raw simulation data and stores their results in an application-aware semantic cache for fast subsequent retrieval. Finally, synchronization at a mediator, task parallel and data-parallel approaches for the evaluation of particle tracking queries are compared and examined. These techniques are developed, deployed and evaluated in the Johns Hopkins Turbulence Databases (JHTDB), an open simulation laboratory for turbulence research. The JHTDB stores the output of world-class numerical simulations of turbulence and provides public access to and means to explore their complete space-time history. The techniques discussed implement core scientific analysis routines and significantly increase the utility of the service. Additionally, they improve the performance of these routines by up-to an order of magnitude or more when compared with direct implementations or implementations adapted from the simulation code

A feminine style of management in the contemporary business world

The main goal of the article is to provide the insight on the gender management in connection with contemporary management. There have been wide ranges of scientific discussions regarding the question of a specific management style that women use in the business practice. A traditional approach indicates that there is no such way of managing an organization as a feminine management style. The traditional approach emphasise that women tend to use the men’s leading style with slight adjustments such as human relations and intuition. A new approach to management indicates that the women’s management style is a reality of any contemporary organization. Hence, a distinct approach to the feminine style of management and its influence on an organization will be explored in this article. Also specific guidelines that women managers can use to become successful in the administrative positions will be described. Data used in the article include the Russian Federation and European statistics on women occupying administrative positions

Character strengths in organizations

Character refers to qualities within individuals that lead them to desire and to pursue the good. We propose that strengths of character are a neglected but critically important resource for organizations. Character matters because it leads people to do the right thing, and the right thing can be productive and profitable. Copyright © 2006 John Wiley & Sons, Ltd.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/55841/1/398_ftp.pd

Momento Económico (41-42)

Temas de hoy, José Antonio Moreno 2/ El impacto social de la crisis sobre la infancia, Graciela de la Vega Herrera 3/ Efectos de la urbanización en el clima del valle de México, Ernesto Jauregui 6/ Consideraciones en torno a la modernización agrícola, Felipe Torres Torres 8/ Los rumbos de la agricultura y la alimentación en México, Emilio Romero Polanco 12/ 1988: persistencia de la crisis y derrumbe electoral, Mano J. Zepeda Martínez 15/ Un comentario acerca de Prebisch, Marta León Reyes 21/ Privatización de la empresa pública en México 1983- 1988, José Casca Zamora 22/ La desincorporación de las empresas del Estado, Alexander Kanov 26/ Índice general de Momento Económic