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Calendaring for wide area networks

Srikanth Kandula, Ishai Menache, Roy Schwartz, Spandana Raj Babbula
2014 Proceedings of the 2014 ACM conference on SIGCOMM - SIGCOMM '14  
We present T , an online temporal planning scheme that appropriately packs long-running transfers across network paths and future timesteps, while leaving capacity slack for future changes.  ...  T builds on a tailored approximate solution to a mixed packing-covering linear program, which is parallelizable and scales well in both running time and memory usage.  ...  Acknowledgements We thank our shepherd Vyas Sekar and the SIGCOMM reviewers for useful comments.  ... 
doi:10.1145/2619239.2626336 dblp:conf/sigcomm/KandulaMSB14 fatcat:pfetce47hvfldjltjvzrykthym

Calendaring for wide area networks

Srikanth Kandula, Ishai Menache, Roy Schwartz, Spandana Raj Babbula
2014 Computer communication review  
We present T , an online temporal planning scheme that appropriately packs long-running transfers across network paths and future timesteps, while leaving capacity slack for future changes.  ...  T builds on a tailored approximate solution to a mixed packing-covering linear program, which is parallelizable and scales well in both running time and memory usage.  ...  Acknowledgements We thank our shepherd Vyas Sekar and the SIGCOMM reviewers for useful comments.  ... 
doi:10.1145/2740070.2626336 fatcat:2vhk2ocx4jexxdjjqhdyngj77q

New Bounds for Online Packing LPs [chapter]

Matthias Englert, Nicolaos Matsakis, Marcin Mucha
2014 Lecture Notes in Computer Science  
In this setting, the online algorithm is given a packing LP and has to monotonically increase LP variables in order to maximize the objective function.  ...  This is designed to model scenarios in which only estimates of remaining capacities (e.g. of batteries) are known, and they get more and more accurate as the remaining capacities approach 0.  ...  [5] give the problem of lifetime optimization in wireless sensor networks as a motivating application (see, e.g., [4] ).  ... 
doi:10.1007/978-3-642-54423-1_28 fatcat:2o2kehcstjhsxpjwk4su6vn2yq

Lithium-Ion Battery Estimation in Online Framework Using Extreme Gradient Boosting Machine Learning Approach

Sadiqa Jafari, Zeinab Shahbazi, Yung-Cheol Byun, Sang-Joon Lee
2022 Mathematics  
The battery management system in an electric vehicle must be reliable and durable to forecast the state of charge.  ...  Considering that battery degradation is generally nonlinear, state of charge (SOC) estimation with lower degradation can be challenging.  ...  Researchers' modeling for online capacity estimation presented intelligent data-driven methods with attention to multiple features and battery capacity, such as neural networks [6, 7] .  ... 
doi:10.3390/math10060888 fatcat:yv53h76swzg3ba4gwo6dzwgb44

E-transportation: the role of embedded systems in electric energy transfer from grid to vehicle

Federico Baronti, Mo-Yuen Chow, Chengbin Ma, Habiballah Rahimi-Eichi, Roberto Saletti
2016 EURASIP Journal on Embedded Systems  
Energy storage system (ESS) technologies, including batteries and ultra-capacitors, have been significantly improved in terms of stored energy and power.  ...  This embedded system controls the power electronics devices, negotiates with the partners in multi-agent scenarios, and performs fundamental tasks such as power flow control and battery management.  ...  NiMH batteries show stability and tolerance to limited abuses, but they are gradually being replaced with Li-ion ones in EV applications, because of the lower self-discharge rate and the better performance  ... 
doi:10.1186/s13639-016-0032-z fatcat:ebw6ccza55bgpegnlwnjsm3c6y

Charging control strategies for lithium‐ion battery packs: Review and recent developments

Nourallah Ghaeminezhad, Mohammad Monfared
2021 IET Power Electronics  
requirements, longer lifetime, and faster-charging speeds with lower self-discharge rates [5, 6] .  ...  To fill this gap, a review of the most up-to-date charging control methods applied to the lithium-ion battery packs is conducted in this paper.  ...  These functions lead to a better battery performance with improved lifetime and reduced safety hazard and capacity fade risks [13] .  ... 
doi:10.1049/pel2.12219 fatcat:74lxaoa6mvfgphl6oobzogdohe

CloudMon: a resource-efficient IaaS cloud monitoring system based on networked intrusion detection system virtual appliances

Bo Li, Jianxin Li, Lu Liu
2013 Concurrency and Computation  
We also verify the effectiveness of our global resource scheduling approach by comparing it with two classic vector packing algorithms, and the results show that our approach improved the resource utilization  ...  This problem is a classic bin packing problem with NP-completeness.  ...  ACKNOWLEDGEMENTS The authors gratefully acknowledge the anonymous reviewers for their helpful suggestions and insightful comments to improve the quality of the paper.  ... 
doi:10.1002/cpe.3166 fatcat:wrurxyfstvdorjro2aeovp75yu

Review on Health Management System for Lithium-Ion Batteries of Electric Vehicles

Zachary Omariba, Lijun Zhang, Dongbai Sun
2018 Electronics  
However lithium-ion batteries (LIBs) for EVs have high capacity, and large serial/parallel numbers, when coupled with problems like safety, durability, uniformity, and cost imposes limitations on the wide  ...  A great deal of research is being carried out to see that this technology does not lead to failure in the applications, as its failure may lead to catastrophes or lessen performance.  ...  A great deal of research is being done to improve the performance of estimation algorithms, as shown in Figure 2 . The battery parameters are captured through online parameter identification.  ... 
doi:10.3390/electronics7050072 fatcat:37scdiirr5fqdomvozcqmggvxu

Online Allocation of Communication and Computation Resources for Real-Time Multimedia Services

Jun Liao, Philip A. Chou, Chun Yuan, Yusuo Hu, Wenwu Zhu
2013 IEEE transactions on multimedia  
in a network with fixed computing and communication capacities.  ...  The algorithm is online in the sense that it is able to sequentially allocate resources for services with long and unknown duration as demands arrive, without benefit of looking ahead to later demands.  ...  algorithms, our algorithm improves the effective capacity of the network by up to 20%.  ... 
doi:10.1109/tmm.2012.2235416 fatcat:dtel2cnq4zbznbj3udqrfrpdoq

A brief review on key technologies in the battery management system of electric vehicles

Kailong Liu, Kang Li, Qiao Peng, Cheng Zhang
2018 Frontiers of Mechanical Engineering  
This paper aims to give a brief review on several key technologies of BMS, including battery modelling, state estimation and battery charging.  ...  Finally, several key and traditional battery charging approaches with associated optimization methods are discussed.  ...  reproduction in any medium, provided the appropriate credit is given to the original author(s) and the source, and a link is provided to the Creative Commons license, indicating if changes were made.  ... 
doi:10.1007/s11465-018-0516-8 fatcat:filsqu75zfa2bnd7dmac6kaavq

Scheduling Executors with Time-varying Resource Demands on Data-Parallel Computation Frameworks

Hu Yang, Su Lin
2017 DEStech Transactions on Social Science Education and Human Science  
Compared to Yarn's default capacity and fair schedulers, Prophet reduces application make span by up to 39% and reduces their median completion time by 23%.  ...  With this knowledge, Prophet schedules executors to minimize resource fragmentation and over-allocation.  ...  With the knowledge of an executor's future varying (peak) disk and network demands at any stage during its lifetime and of each stage's start time and its duration, Prophet can estimate resource availability  ... 
doi:10.12783/dtssehs/asshm2016/8355 fatcat:sxd7htsllzalvlmxopfpvze7hy

A lifetime-balancing MAC protocol under the end-to-end delay requirement

2017 Journal of Communications and Networks  
Results show that LB-MAC is able to yield a significantly longer network lifetime than state-of-the-art MAC protocols such as X-MAC, RI-MAC, and SEESAW, while meeting the end-to-end delay requirement,  ...  LB-MAC has been implemented in TinyOS and evaluated on a sensor network testbed with extensive experiments.  ...  LB-MAC is complementary to these schemes and can be integrated with them to further improve network lifetime. III.  ... 
doi:10.1109/jcn.2017.000008 fatcat:m23453ypcfanbaucuc34qfy7ge

Future on Power Electronics for Wind Turbine Systems

Frede Blaabjerg, Ke Ma
2013 IEEE Journal of Emerging and Selected Topics in Power Electronics  
There is a widespread use of wind turbines in the distribution networks and more and more wind power stations, acting as power plants, are connected directly to the transmission networks.  ...  Therefore, more advanced generators, power electronic systems, and control solutions have to be introduced to improve the characteristics of the wind power plant and make it more suitable to be integrated  ...  The press-pack packaging technology improves the connection of chips by direct press-pack contacting, which leads to improved reliability (yet to be scientifically proved but known from industrial experience  ... 
doi:10.1109/jestpe.2013.2275978 fatcat:4npvtp3t4bb3dd6enitob7wzbq

Analysis of Performance and Degradation for Lithium Titanate Oxide Batteries [article]

Ana-Irina Stroe
2018 The PhD Series of the Faculty of Engineering and Science  
Acknowledgments This work is part of the "ALPBES -Advanced Lifetime Predictions of Battery Energy Storage" project, which is financially supported by The Danish Council for Strategic Research.  ...  Acknowledgments This work is part of the "ALPBES -Advanced Lifetime Predictions of Battery Energy Storage" project, which is financially supported by The Danish Council for Strategic Research.  ...  in order to optimize the battery performance, as well to maximize their lifetime, reliability and safety.  ... 
doi:10.5278/vbn.phd.eng.00039 fatcat:wlfbyi5ym5ea3mnz26lufntrcu

Hybrid lead-acid/lithium-ion energy storage system with power-mix control for light electric vehicles

Steven Chung, Olivier Trescases
2016 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)  
His intellect, attention to detail, and commitment to excellence has been an inspiration over the past two years, and will continue to guide me in future endeavors in my career and life.  ...  A modular HESS architecture with a dc-dc converter and controller is proposed.  ...  Acknowledgements storage system ultimately leads to improved range and Γ efficiency.  ... 
doi:10.1109/epe.2016.7695531 fatcat:cspq24wpdrbtbf2kecbjw65dku
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