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Large data centers have costs of implementation and management generally very high and a significant part of these costs are related to energy consumption. In addition, Governments, in the implementation of the Kyoto Protocol, push to adopt in the coming years more responsible behavior towards the environment implementing energy-saving strategies also in the management of big Data Centers. Thus, if some actions to reduce the energy impact on the overall costs for large Data Centers can not be postponed, it is also indispensable to take into account the needs of users that thanks to the use of these resources contribute to the advancement of science in strategic, and generally mission-critical, scientific areas. Here we report the experience made for the realization of a complex and modular system, named ECCO, able to automatically and dynamically redefine the set of active resources of a Data Center with the purpose of drastically reducing the energy costs without "too much" neglecting the needs of users. Some issues related to the deploy and the validation of some components of the ECCO system are reported focusing on the real case study of the S.Co.P.E data center at the University of Naples Federico II.

Abstract We have analyzed time series of solar data together with the atmospheric and ionospheric measurements for solar cycles 19 till 23 according to particular data availability. For the analyses we have used long term data with 1-day sampling. By mean of Continuous Wavelet Transform (CWT) we have found common spectral domains within solar and atmospheric and ionospheric time series. Further we have identified terms when particular pairs of signals show high coherence applying Wavelet Transform Coherence (WTC). Despite wide oscillation ranges detected in particular time series CWT spectra we found only limited domains with high coherence by mean of WTC. Wavelet Transform Coherence reveals significant high power domains with stable phase difference for periods 1 month, 2 months, 6 months, 1 year, 2 years and 3–4 years between pairs of solar data and atmospheric and ionospheric data. The occurence of the detected domains vary significantly during particular solar cycle (SC) and from cycle to the following one. It indicates the changing solar forcing and/or atmospheric sensitivity with time.

This work had partial financial support of the Portuguese Foundation for Science and Technology (FCT) under the Strategic Project for the Centre of Territory, Environment and Construction of the School of Engineering, University of Minho, Portugal. The Cluster computing facilities are provided by the Project ‘Search-ON2: Revitalisation of HPC infrastructure of UMinho’ (NORTE-07-0162-FEDER-000086), co-funded by the North Portugal Regional Operational Programme (ON.2 – O Novo Norte), under the National Strategic Reference Framework (NSRF), through the European Regional Development Fund (ERDF). We also would like to thank the two anonymous reviewers.

ABSTRACT Negro, V.; Lopez-Gutierrez, J.S.; Esteban, M.D.; Del Campo, J.M., and Luengo, J., 2018. Action strategy for studying marine and coastal works with climate change on the horizon. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 506–510. Coconut Creek (Florida), ISSN 0749-0208. Climate Change effects can be analysed from different points of view. As far as harbour and coastal engineering are concerned, the most worrying effect is the sea level rise, having been observed over the whole planet during the 20th century, reaching figures up to 1 or 2 millimetres per year. Lately, it has been seen an acceleration of the process, developing an annual rise rate of 3 millimetres in the period between 1993 and 2003. In Spain, this rise in sea level can be estimated between 3 and 5 millimetres a year, although this value is not uniform along the whole coastline. Th...

The main objective of the study was to investigate the temporal features of the wind speed in complex mountainous terrains that are important for the assessment and development of wind energy. Six high-frequency records of 10-min averages of wind speed measured in Switzerland are investigated in order to better characterize their inner time dynamics. All the wind speed time series are modulated by components periods of 1 day and 12 h, linked with the temperature and pressure daily variation due to the sunset and sunrise. Furthermore the time dynamics of the wind speed is characterized by the presence of two different timescale ranges, separated by a crossover at about 7 days: persistent and multifractal at larger timescales and antipersistent and monofractal (or weakly multifractal) at smaller ones. The-found features do not seem to depend on the altitude, because all the wind speed series share the same dynamical characteristics. The results of this comprehensive study can be utilized to better understand the mechanisms governing the time dynamics of wind speed and to perform a better wind energy assessment and management. (C)2015 Elsevier Ltd. All rights reserved.

A model of the atmospheric entry of sub-mm grains is employed to evaluate the effect of the chemical composition of the primordial Earth's atmosphere on the grain heating, in the context of organic matter delivery. Calculations are performed with spherical, uniform grains of forsterite/fayalite composition as well with the recently proposed white soft mineral (WSM) grains. Different hypotheses on primordial atmosphere composition affect the scale height and the energy transfer. The present work shows that: the total gas budget of the atmosphere is not highly relevant as far as the determination of the heating associated with slowing to subsonic speed is concerned; accordingly, light components (which are expected to be present in a primordial atmosphere and more abundant in the upper one) may be the primary ones in the evaluation of momentum and heat transfer in such scenarios. Strong reduced heating is obtained in the case of an upper atmosphere rich in light components, showing that the composition of the primordial Earth atmosphere may represent the key issue in the delivery of thermolabile organic matter enclosed in sub-mm extraterrestrial grains.

The applicability of cantilever-enhanced photoacoustic spectroscopy (CEPAS), which exploits the unique properties of a micromechanical lever sensor (cantilever) in combination with tunable quantum ...