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Performance analysis of dynamic finite versioning schemes: storage cost vs. obsolescence

A. Merchant, Kun-Lung Wu, P.S. Yu, Ming-Syan Chen
1996 IEEE Transactions on Knowledge and Data Engineering  
Dynamic finite versioning (DFV) schemes are an effective approach to concurrent transaction and query processing, where a finite number of consistent, but maybe slightly out-of-date, logicalsnapshots of  ...  In DFV, the storage overhead for keeping additional versions of changed data to support the logical snapshots and the amount of obsolescence faced by queries are two major performance issues.  ...  In DFV, a finite number of logical versions for each page is dynamically maintained.  ... 
doi:10.1109/69.553167 fatcat:tr5nwb2ejvghle2ee5i6orwjv4

On Solving Groundwater Flow and Transport Models with Algebraic Multigrid Preconditioning [article]

M. A. Sbai, A. Larabi
2020 arXiv   pre-print
This paves the way for routine time-consuming tasks such as sensitivity analysis.  ...  In this work, this technique was implemented in the framework of the dual delineation approach.  ...  In view of this, the additional cost of higher memory storage when moving towards AMG preconditioning is affordable, such that the related assertions by Detwiler et al. (2002) are no longer of concern  ... 
arXiv:2001.05798v2 fatcat:tdjgydw2bvh5jf4wliogia5reu

OR in spare parts management: A review

Qiwei Hu, John E. Boylan, Huijing Chen, Ashraf Labib
2018 European Journal of Operational Research  
Finally, as the result of this review, an extended version of the framework is proposed and a set of future research directions is discussed.  ...  Spare parts are held to reduce the consequences of equipment downtime, playing an important role in achieving the desired equipment availability at a minimum economic cost.  ...  Smets et al. (2012) also performed a life cycle cost (LCC) analysis, which included four main categories: design and development costs, production and assembly costs, operation, service and maintenance  ... 
doi:10.1016/j.ejor.2017.07.058 fatcat:2xhz7ilz6ng47l3bjhqfdogk3y

A Multi-agent Based Digital Preservation Model [article]

Jacopo Pellegrino
2014 arXiv   pre-print
They are able to become aware of obsolescent formats based on global parameters such as their diffusion.  ...  Walter Allasia, Innovation Department, EURIX; email: allasia@eurix.it The thesis describes an agent-based model aimed to simulate those processes in which a digital object faces the risk of obsolescence  ...  Frequency of "Time-costing" Migrations Section 6.1 of this chapter contains an extensive analysis which proves the stability of the agent system.  ... 
arXiv:1408.6126v2 fatcat:qfmakg244zalnmu6pv5ojtgnuq

Holding costs under push or pull conditions – The impact of the Anchor Point

Patrick Beullens, Gerrit K. Janssens
2011 European Journal of Operational Research  
To approximate the optimal relative cost, we develop an iterative calculation scheme that estimates the expected total cost over an infinite time horizon, assuming that future demands are fulfilled according  ...  We analyze the effects of introducing carbon emission in the model as endogenous variable by employing comparative static analysis.  ...  By applying Infinitesimal Perturbation Analysis (IPA) algorithm -a form of approximate dynamic programming we show how realistic-size versions can be solved and obtain some interesting managerial insights  ... 
doi:10.1016/j.ejor.2011.06.005 fatcat:rpilnlihzfg5zps66qehd4rrxq

State Space Model Extraction of a Natural Circulation U-Tube: A Network Approach

K.R. Uren, G. van Schoor
2013 SAIEE Africa Research Journal  
Since the RCCS is critical in case of a Loss of Flow Accident (LOFA), it is very important to characterise the dynamics of such a system both for systems and control engineering purposes.  ...  To guarantee quality of service for these NGN's, a call admission control scheme addressing the main challenges of NGN's is presented.  ...  The capacities of the traffic class one and Figure 5 : 5 Performance of SIR CAC vs.  ... 
doi:10.23919/saiee.2013.8531574 fatcat:t5tbbdrksjfzpkd7nyxgv4eeki

The Vessel Schedule Recovery Problem (VSRP) – A MIP model for handling disruptions in liner shipping

Berit D. Brouer, Jakob Dirksen, David Pisinger, Christian E.M. Plum, Bo Vaaben
2013 European Journal of Operational Research  
Sensitivity analysis is performed to gain better insights into knowing how important parameters affect the design of the system.  ...  Such institutions are especially interested in minimizing the total cost of purchase which consists of the prices at which particular products are bought and the cost of their transportation.  ...  -Optimal Dynamic Tax Evasion: A Portfolio Approach Francesco Menoncin, Economics, Brescia University, Via S. Faustino, 74/B, 25122, Brescia, Italy, menoncin@eco.unibs.it, Rosella Levaggi  ... 
doi:10.1016/j.ejor.2012.08.016 fatcat:c27kagfnxnhjfbil2rydhjhomm

D7.5: Evaluation of Accelerated and Non-accelerated Benchmarks

Walter Lioen, Miguel Avillez, Valeriu Codreanu, Dimitris Dellis, Sagar Dolas, Andrew Emerson, Jakob Finkenrath, Cédric Jourdain, Martti Louhivuori, Cristian Morales, Charles Moulinec, Arno Proeme (+1 others)
2019 Zenodo  
For this we combine all benchmark results and derive a comparison of the overall performance of the systems, and a comparison of the energy efficiency for the systems where we obtained energy measurements  ...  Finally, we conclude with a high-level comparison of the benchmark systems: starting with the ubiquitous LINPACK performance; followed by both application performance (time to solution, or speed) as well  ...  D7.5 Evaluation of Accelerated and Non-accelerated Benchmarks PRACE-5IP-EINFRA-730913 Acknowledgements We gratefully acknowledge the support of the DEEP-ER project.  ... 
doi:10.5281/zenodo.6806000 fatcat:ypuyjp3e4zburbdppt3pjnfebi

A distributed archival network for process-oriented autonomic long-term digital preservation

Ivan Subotic, Lukas Rosenthaler, Heiko Schuldt
2013 Proceedings of the 13th ACM/IEEE-CS joint conference on Digital libraries - JCDL '13  
The former looking at the correct execution of the DISTARNET processes, and the later looking at the performance of the system regarding the overall archiving storage capacity. Global vs.  ...  Embedded Process Engine vs.  ...  To verify that the network of nodes has reached a stable state, we check at the end a sample of RLR entries on every node, to see if there are again three replicas of each nodes DAOs in the DISTARNET network  ... 
doi:10.1145/2467696.2467710 dblp:conf/jcdl/SuboticRS13 fatcat:2hsnqk22h5gqzicp3braleosja

Feedback control real-time scheduling

Chenyang Lu, John A. Stankovic, Tarek Abdelzaher, Sang H. Son, Gang Tao
2000 ACM SIGOPS Operating Systems Review  
Second, we derive dynamic models for computing systems for the purpose of performance control. These models provide a theoretical foundation for adaptive performance control.  ...  Fourth, a set of controlbased performance specifications characterizes the efficiency, accuracy, and robustness of QoS guarantees.  ...  The process gain G of the controlled storage system can be approximated with the slope of the R m vs. I v curve.  ... 
doi:10.1145/346152.346222 fatcat:qn3trhrsnrdivimcsnsci4mjoa

Feedback control real-time scheduling

Chenyang Lu, John A. Stankovic, Tarek Abdelzaher, Sang H. Son, Gang Tao
2000 ACM SIGOPS Operating Systems Review  
Second, we derive dynamic models for computing systems for the purpose of performance control. These models provide a theoretical foundation for adaptive performance control.  ...  Fourth, a set of controlbased performance specifications characterizes the efficiency, accuracy, and robustness of QoS guarantees.  ...  The process gain G of the controlled storage system can be approximated with the slope of the R m vs. I v curve.  ... 
doi:10.1145/346152.346275 fatcat:a6cf7zwyv5g23p3lv7qxwwwja4

Concurrent Computing in the Many-core Era (Dagstuhl Seminar 15021)

Michael Philippsen, Pascal Felber, Michael L. Scott, J. Eliot B. Moss, Marc Herbstritt
2015 Dagstuhl Reports  
This report documents the program and the outcomes of Dagstuhl Seminar 15021 "Concurrent computing in the many-core era".  ...  on the previous seminars by notably (1) broadening the scope to concurrency beyond transactional memory and shared-memory multicores abstractions, (2) focusing on the new challenges and potential uses of  ...  Notes (collected by members of the audience) Various kinds of heterogeneity (ISA, scale,performance (thin vs. fat cores), fundamental organization (e.g., CPU vs.  ... 
doi:10.4230/dagrep.5.1.1 dblp:journals/dagstuhl-reports/PhilippsenFSM15 fatcat:owcmta65hzb5vmglwq3dwzbehy

Managing Capacity in the High-Tech Industry: A Review of Literature

S. David Wu, Murat Erkoc, Suleyman Karabuk
2005 The Engineering Economist  
For instance, we explore the role of option theory and real options in modeling  ...  This article surveys a new generation of analytical tools for capacity planning and management, especially in high-tech industries such as semiconductors, electronics and bio-techs.  ...  Kumar and Kumar (2001) provide a tutorial overview of queuing networks in semiconductor wafer fab performance analysis.  ... 
doi:10.1080/00137910590949887 fatcat:jnvxkluumneh3lcqurw2oufeve

ETP4HPC's Strategic Research Agenda for High-Performance Computing in Europe 4 [article]

Michael Malms, Marcin Ostasz, Maike Gilliot, Pascale Bernier-Bruna, Laurent Cargemel, Estela Suarez, Herbert Cornelius, Marc Duranton, Benny Koren, Pascale Rosse-Laurent, María S. Pérez-Hernández, Manolis Marazakis (+11 others)
2020 Zenodo  
The main objective of this SRA is to identify the European technology research priorities in the area of HPC and High-Performance Data Analytics (HPDA), which should be used by EuroHPC to build its 2021  ...  This Strategic Research Agenda (SRA) is the fourth High Performance Computing (HPC) technology roadmap developed and maintained by ETP4HPC, with the support of the EXDCI-2 project.  ...  By reducing the versions).  ... 
doi:10.5281/zenodo.4605343 fatcat:lcsgbea5dzgdfmj5dkw6pr7vni

Effective web crawling

Carlos Castillo
2005 SIGIR Forum  
, and support this conclusion with log analysis of several Web sites.  ...  The key factors for the success of the World Wide Web are its large size and the lack of a centralized control over its contents.  ...  The amount of information in the Web at any given time is certainly finite, but when a dynamic page leads to another dynamic page, the number of pages can be potentially infinite.  ... 
doi:10.1145/1067268.1067287 fatcat:kxnfz2jiifhdphoccit4rbzule
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