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- Bock, O., et al.
(författare)
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Use of GNSS Tropospheric Products for Climate Monitoring (Working Group 3)
- 2020
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Ingår i: Advanced GNSS Tropospheric Products for Monitoring Severe Weather Events and Climate. - Cham : Springer International Publishing. - 9783030139001 ; , s. 267-402
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- There has been growing interest in recent years in the use of homogeneously reprocessed ground-based GNSS, VLBI, and DORIS measurements for climate applications. Existing datasets are reviewed and the sensitivity of tropospheric estimates to the processing details is discussed. The uncertainty in the derived IWV estimates and linear trends is around 1 kg m^2 RMS and ± 0.3 kg m^2 per decade, respectively. Standardized methods for ZTD outlier detection and IWV conversion are proposed. The homogeneity of final time series is limited however by changes in the stations equipment and environment. Various homogenization algorithms have been evaluated based on a synthetic benchmark dataset. The uncertainty of trends estimated from the homogenized times series is estimated to ±0.5 kg m^2 per decade. Reprocessed GNSS IWV data are analysed along with satellites data, reanalyses and global and regional climate model simulations. A selection of global and regional reprocessed GNSS datasets and ERA-interim reanalysis are made available through the GOP-TropDB tropospheric database and online service. A new tropo SINEX format, providing new features and simplifications, was developed and it is going to be adopted by all the IAG services.
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- Chabloz, J. -M, et al.
(författare)
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Power management architecture in McNoC
- 2012
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Ingår i: Scalable Multi-core Architectures. - New York, NY : Springer Science+Business Media B.V.. - 9781441967787 ; , s. 55-80
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- In this chapter we present the power management architecture of the McNoC platform. The power management architecture of McNoC offers distributed Dynamic Voltage Frequency Scaling (DVFS) and power down services to the platform at a fine level of granularity, allowing independent setting of frequency and supply voltage to all switch and resource nodes in the platform. The design style enables hierarchical physical design and solves the clock-domain-crossing problem with a solution based on rationally-related frequencies, which avoids the overhead associated with handshake. The architecture allows arbitrary power management regions to be defined and region-wide power management commands affecting all nodes in a region can be issued by the software layer that we call as Power Management Intelligence (PMINT).
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- El-Mekawy, M., et al.
(författare)
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Modeling and managing business processes
- 2010
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Ingår i: Handbook on Business Information Systems. - : World Scientific Publishing Co. Pte Ltd. - 9789812836069 - 9789812836052 ; , s. 93-116
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The purpose of this chapter is to present tools and techniques for modeling and managing business processes. For this, business process modeling is defined and classified according to two levels of detail. These categories are chained together with the help of a transformation technique, which is explained with the help of an example. As soon as the number of processes increases, they cannot be managed manually. This motivates the need for a software system called a business process management system (BPMS). The properties of a BPMS are explained, and the components of a BPMS, which support the necessary requirements of managing processes, are also presented with their advantages. Also, the major principles of business process management (BPM) are presented in this chapter.
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