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Search Results: 1 - 10 of 566 matches for " Omid Mola "
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Towards Cloud Management by Autonomic Manager Collaboration  [PDF]
Omid Mola, Michael A. Bauer
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2011, DOI: 10.4236/ijcns.2011.432097
Abstract: The management of clouds comprised of hundreds of hosts and virtual machines present challenging problems to administrators in ensuring that performance agreements are met and that resources are efficiently utilized. Automated approaches can help in managing such environments. Autonomic managers using policy-based management can provide a useful approach to such automation. We outline how collections of collaborating autonomic managers in cloud can be a step towards better management of clouds. We describe how a hierarchy of policy-based autonomic managers can collaborate using messages. The messages and when to communicate is inferred automatically from the policies given to the managers. We evaluate the approach via a prototype inspired by a cloud virtualized infrastructure and show how collaboration between managers in a hierarchy can improve the response time of a web server and avoid service level agreement violations. Results of three different scenarios shows the importance of collaboration between managers at different authority levels and how this collaboration can help to increase efficiency of current infrastructures.
Applying Heuristic Search for Distributed Software Performance Enhancement  [PDF]
Omid BUSHEHRIAN
Journal of Software Engineering and Applications (JSEA) , 2009, DOI: 10.4236/jsea.2009.23021
Abstract: Software reverse engineering and reengineering techniques are most often applied to reconstruct the software archi-tecture with respect to quality constraints, or non-functional requirements such as maintainability or reusability. In this paper, the performance improvement of distributed software is modeled as a search problem that is solved by heuristic search algorithms such as genetic search methods. To achieve this, firstly, all aspects of the distributed execution of a software is specified by an analytical performance evaluation function that not only evaluates the current deployment of the software from the performance perspective but also can be applied to propose the near-optimal object deploy-ment for that software. This analytical function is applied as the Heuristic search objective function. In this paper a novel statement reordering method is also presented which is used to generate the search objective function such that the best solution in the search space can be found.
Seasonal and spatial distribution of Brachionus (Pallas, 1966; Eurotatoria: Monogonanta: Brachionidae), a bioindicator of eutrophication in lake El-Manzalah, Egypt
HRA. Mola
Biology and Medicine , 2011,
Abstract: Rotifers, especially Brachionus sp., are the major component of zooplankton in Egyptian eutrophic lakes. Thesespecies play an important role as bioindicator in these aquatic environments. In present study, twenty-fourzooplankton samples were collected and investigated along six stations of southeastern sector of the lake fromAugust 2009 to May 2010. Brachionus sp. were the most abundant species constituting 74.8 % of the total rotifersand 59.87 % of the total zooplankton. It was represented by 7 species which are; Brachionus angularis, B.budapestinensis, B. calyciflorus, B. caudatus, B. plicatilis, B. urceolaris and B. quadridentatus. The highestabundance of Brachionus sp. was recorded at Ibn Salam Station (4227493 Org./m3) during summer due to the effectof water discharge rich in nutrients through 3 main drains in this area while the lowest abundance was recorded at El-Qaboti Station (333 Org./m3) during winter. Brachionus angularis and B. calyciflorus formed collectively (92.16 % ofthe total Brachionus sp.). The presence of these species of Brachionus in high composition indicates eutrophicationof Lake El-Manzalah.
Fabrication and Microstructure of Layers Containing Intermetallic Phases on Magnesium
R. Mola
Archives of Foundry Engineering , 2013,
Abstract: Al- and Al/Zn-enriched layers containing intermetallic phases were deposited on the Mg substrate by heating the Mg specimens in contactwith the powdered materials in a vacuum furnace. The Al-enriched surface layers were produced using Al powder, whereas the Al/Znenriched layers were obtained from an 80 wt.% Al + 20 wt.% Zn powder mixture. The microstructure and composition of the layers wereanalyzed by optical microscopy, scanning electron microscopy and X-ray diffraction. The results showed that the Al-enriched layercomprised an Mg17Al12 intermetallic phase and a solid solution of Al in Mg. The layer obtained from the Al+Zn powder mixture wascomposed of Mg-Al-Zn intermetalic phases and a solid solution of Al and Zn in Mg. Adding 20% of Zn into the Al powder resulted in theformation of a considerably thicker layer. Moreover, the hardness of the surface layers was much higher than that of the Mg substrate.
Convergence to equilibria for a three-dimensional conserved phase-field system with memory
Gianluca Mola
Electronic Journal of Differential Equations , 2008,
Abstract: We consider a conserved phase-field system with thermal memory on a tridimensional bounded domain. Assuming that the nonlinearity is real analytic, we use a Lojasiewicz-Simon type inequality to study the convergence to steady states of single trajectories. We also give an estimate of the convergence rate.
Reliability of High Speed Ultra Low Voltage Differential CMOS Logic  [PDF]
Omid Mirmotahari, Yngvar Berg
Circuits and Systems (CS) , 2015, DOI: 10.4236/cs.2015.65013
Abstract: In this paper, we present a solution to the ultra low voltage inverter by adding a keeper transistor in order to make the semi-floating-gate more stable and to reduce the current dissipation. Moreover, we also present a differential ULV inverter and elaborate on the reliability and fault tolerance of the gate. The differential ULV gate compared to both a former ULV gate and standard CMOS are given. The results are obtained through Monte-Carlo simulations.
Fantasia e conhecimento: um estudo crítico preliminar
Mola, Luis Guilherme Coelho;
Psicologia USP , 1999, DOI: 10.1590/S0103-65641999000200003
Abstract: the purpose of this article is to discuss the role played by imagination in the process of knowledge production. using as theoretical support the ideas of some philosophers of the frankfurt school, the text attempts to demonstrate that imagination has a critical function, denied by positivism, which could contribute for the questioning of the organization of society.
L'ús de la norma de qualitat ISO 9001 a les biblioteques d'institucions d'educació superior
Balagué Mola, Núria
BiD : Textos Universitaris de Biblioteconomia i Documentació , 2007,
Abstract: La norma ISO 9001 és un dels instruments de gestió que han estat adoptats per les biblioteques durant els darrers anys. En aquest article es presenten els trets principals de les biblioteques d'institucions d'ensenyament superior que han assolit la certificació dels seus sistemes de gestió de la qualitat amb la norma ISO 9001:2000, els motius que les han dut a certificar-se, i els avantatges i les dificultats que els ha comportat aplicar-la. Finalment, s'ofereix una visió prospectiva sobre el futur de la norma ISO 9001 a les biblioteques universitàries.Las norma ISO 9001 es uno de los instrumentos de gestión que han sido adoptados por las bibliotecas durante los últimos a os. En este artículo se presentan las principales características de las bibliotecas de instituciones de ense anza superior que han obtenido la certificación de su sistema de gestión de la calidad con la norma ISO 9001:2000, los motivos que las han llevado a certificarse, y las ventajas y dificultades que les ha supuesto su aplicación. Finalmente, se ofrece una visión prospectiva sobre el futuro de la norma ISO 9001 en las bibliotecas universitarias.ISO standard 9001 is one of a set of management tools that libraries have adopted in recent years. This article focuses on libraries in higher education institutions that have received ISO certification of their quality management systems (ISO standard 9001:2000). We examine their reasons for seeking certification and the advantages and difficulties they have encountered in applying this ISO standard. Finally, we consider the future prospects of ISO standard 9001 in university libraries.
El uso de la norma de calidad ISO 9001 en las bibliotecas de instituciones de educación superior
Balagué Mola, Núria
BiD : Textos Universitaris de Biblioteconomia i Documentació , 2007,
Abstract: La norma ISO 9001 és un dels instruments de gestió que han estat adoptats per les biblioteques durant els darrers anys. En aquest article es presenten els trets principals de les biblioteques d'institucions d'ensenyament superior que han assolit la certificació dels seus sistemes de gestió de la qualitat amb la norma ISO 9001:2000, els motius que les han dut a certificar-se, i els avantatges i les dificultats que els ha comportat aplicar-la. Finalment, s'ofereix una visió prospectiva sobre el futur de la norma ISO 9001 a les biblioteques universitàries.Las norma ISO 9001 es uno de los instrumentos de gestión que han sido adoptados por las bibliotecas durante los últimos a os. En este artículo se presentan las principales características de las bibliotecas de instituciones de ense anza superior que han obtenido la certificación de su sistema de gestión de la calidad con la norma ISO 9001:2000, los motivos que las han llevado a certificarse, y las ventajas y dificultades que les ha supuesto su aplicación. Finalmente, se ofrece una visión prospectiva sobre el futuro de la norma ISO 9001 en las bibliotecas universitarias.ISO standard 9001 is one of a set of management tools that libraries have adopted in recent years. This article focuses on libraries in higher education institutions that have received ISO certification of their quality management systems (ISO standard 9001:2000). We examine their reasons for seeking certification and the advantages and difficulties they have encountered in applying this ISO standard. Finally, we consider the future prospects of ISO standard 9001 in university libraries.
Fantasia e conhecimento: um estudo crítico preliminar
Mola Luis Guilherme Coelho
Psicologia USP , 1999,
Abstract: Neste artigo discute-se o lugar ocupado pela fantasia no processo de produ o do conhecimento. A partir do referencial fornecido por autores ligados à Escola de Frankfurt, procurou-se demonstrar que a fantasia possui uma fun o crítica, negada pela concep o positivista de ciência, que pode contribuir para o questionamento da maneira pela qual a realidade se encontra constituída.
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