Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575272
Feng Gu, K. Shaban, N. Ghani, M. Hayat, C. Assi
Cloud computing services are being adopted to expand applications across dispersed data-center sites. As these new paradigms require active data exchange, they impose further virtual network (VN) mappings over operator networks. Now clearly, service recovery after large catastrophic events is a key concern for mission-critical cloud services. Hence in order to address this challenge, this paper presents several post-fault restoration schemes to improve VN survivability based upon partial and full remapping. Detailed simulation analyses are also presented to show the improved efficacy of the restoration approach.
{"title":"Regional failure survivability for cloud networking services using post fault restoration","authors":"Feng Gu, K. Shaban, N. Ghani, M. Hayat, C. Assi","doi":"10.1109/SYSoSE.2013.6575272","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575272","url":null,"abstract":"Cloud computing services are being adopted to expand applications across dispersed data-center sites. As these new paradigms require active data exchange, they impose further virtual network (VN) mappings over operator networks. Now clearly, service recovery after large catastrophic events is a key concern for mission-critical cloud services. Hence in order to address this challenge, this paper presents several post-fault restoration schemes to improve VN survivability based upon partial and full remapping. Detailed simulation analyses are also presented to show the improved efficacy of the restoration approach.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121780026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575248
M. Ferrero, J. L. González-Álvarez, Cristina Ruiz Martin, A. López-Paredes
A nuclear emergency (NE) may dramatically impact on several interrelated domains such as health, critical infrastructures, land use, etc. A Nuclear Emergency Plan (NEP) involves multiple systems acting in a coordinated way, according to a pre-established organisation, which is endowed with a set of rules, communications and commands. Usually the NEP is top-down defined. In this paper we propose the definition of NEPs from a System of Systems Engineering (SoSE) approach. This conceptualisation facilitates the assessment and analysis of key indicators: the resilience, responsiveness and effectiveness of NEPs. We illustrate the advantages of this approach with the analysis of the communications network (CN) in a real case study.
{"title":"Modelling of a Nuclear Emergency Plan: A system of systems engineering approach","authors":"M. Ferrero, J. L. González-Álvarez, Cristina Ruiz Martin, A. López-Paredes","doi":"10.1109/SYSoSE.2013.6575248","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575248","url":null,"abstract":"A nuclear emergency (NE) may dramatically impact on several interrelated domains such as health, critical infrastructures, land use, etc. A Nuclear Emergency Plan (NEP) involves multiple systems acting in a coordinated way, according to a pre-established organisation, which is endowed with a set of rules, communications and commands. Usually the NEP is top-down defined. In this paper we propose the definition of NEPs from a System of Systems Engineering (SoSE) approach. This conceptualisation facilitates the assessment and analysis of key indicators: the resilience, responsiveness and effectiveness of NEPs. We illustrate the advantages of this approach with the analysis of the communications network (CN) in a real case study.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117337902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575284
Elmira Mohyedinbonab, O. Ghasemi, M. Jamshidi, Yufang Jin
Gene regulation studies reveal unknown biological functions in disease progression. As more time-course datasets become available, interactions among the regulators and their associated target genes may better describe the evolution of gene regulatory networks. Currently in many research studies, interaction delay is not considered. Such delay is embedded in the network due to the intrinsic temporal process of gene expression. In this paper, a time delay regression model is developed to identify and predict time-dependent interactions. To estimate the model parameters, Average Square Difference Function and Least square estimation methods are applied. The time-course gene expression dataset in this paper was obtained for mice post-myocardial infarction. The simulation results show better performance of proposed method compared with no-delay and cross correlation-based methods.
{"title":"Time delay estimation in gene regulatory networks","authors":"Elmira Mohyedinbonab, O. Ghasemi, M. Jamshidi, Yufang Jin","doi":"10.1109/SYSoSE.2013.6575284","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575284","url":null,"abstract":"Gene regulation studies reveal unknown biological functions in disease progression. As more time-course datasets become available, interactions among the regulators and their associated target genes may better describe the evolution of gene regulatory networks. Currently in many research studies, interaction delay is not considered. Such delay is embedded in the network due to the intrinsic temporal process of gene expression. In this paper, a time delay regression model is developed to identify and predict time-dependent interactions. To estimate the model parameters, Average Square Difference Function and Least square estimation methods are applied. The time-course gene expression dataset in this paper was obtained for mice post-myocardial infarction. The simulation results show better performance of proposed method compared with no-delay and cross correlation-based methods.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114536712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575265
H. Terada, T. Onishi, Tatsuhiro Tsuchiya
A power distribution system is a system of systems which integrates a power grid and a SCADA (Supervisory Control And Data Acquisition) system. In this paper we discuss SCADA systems that support a future power grid which accommodates large quantities of PV (photovoltaic) power generation. First we clarify the communication capability required for a SCADA system to fully monitor the future power grid. The result suggests that a considerable improvement needs to be made. However, as such improvement incurs huge cost and thus will not happen instantly, it is necessary to adapt to situations where communication speed is limited. To this end we propose a method that selects monitoring points within the limitations. This selection process aims to cover sensing points where abnormal voltage is most likely to occur. We evaluate the proposed method to show its usefulness by simulation.
{"title":"A monitoring point selection approach for power distribution systems","authors":"H. Terada, T. Onishi, Tatsuhiro Tsuchiya","doi":"10.1109/SYSoSE.2013.6575265","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575265","url":null,"abstract":"A power distribution system is a system of systems which integrates a power grid and a SCADA (Supervisory Control And Data Acquisition) system. In this paper we discuss SCADA systems that support a future power grid which accommodates large quantities of PV (photovoltaic) power generation. First we clarify the communication capability required for a SCADA system to fully monitor the future power grid. The result suggests that a considerable improvement needs to be made. However, as such improvement incurs huge cost and thus will not happen instantly, it is necessary to adapt to situations where communication speed is limited. To this end we propose a method that selects monitoring points within the limitations. This selection process aims to cover sensing points where abnormal voltage is most likely to occur. We evaluate the proposed method to show its usefulness by simulation.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121900227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575260
John J. Prevost, K. Nagothu, B. Kelley, M. Jamshidi
Cloud computing is evolving into the default operational framework running modern data centers. Efficient data center operation is concerned with the total amount of energy consumed as well as assuring adequate resources are available to process all of the incoming work requests. Existing research has demonstrated several algorithms that can be used to determine the optimal number of resources required to service these requests. However, a key issue not addressed in these algorithms is determining the frequency of recalculating the number of required resources. Changing the required resources at a rate slower than the optimal update frequency results in lower energy efficiency due to the over allocation of resources. Changing the resources at a rate higher than the optimal frequency results in insufficient time for systems to change state, which results in SLA violations. In this paper, a stochastic optimization model is presented that determines the optimal update frequency for changing the states of the nodes of the cloud as well as determining the proper frequency for recalculating the maximum expected load, which improves the determination of the optimum number of resources required, therefore maximizes energy efficiency and minimizes SLA violations.
{"title":"Optimal update frequency model for physical machine state change and virtual machine placement in the cloud","authors":"John J. Prevost, K. Nagothu, B. Kelley, M. Jamshidi","doi":"10.1109/SYSoSE.2013.6575260","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575260","url":null,"abstract":"Cloud computing is evolving into the default operational framework running modern data centers. Efficient data center operation is concerned with the total amount of energy consumed as well as assuring adequate resources are available to process all of the incoming work requests. Existing research has demonstrated several algorithms that can be used to determine the optimal number of resources required to service these requests. However, a key issue not addressed in these algorithms is determining the frequency of recalculating the number of required resources. Changing the required resources at a rate slower than the optimal update frequency results in lower energy efficiency due to the over allocation of resources. Changing the resources at a rate higher than the optimal frequency results in insufficient time for systems to change state, which results in SLA violations. In this paper, a stochastic optimization model is presented that determines the optimal update frequency for changing the states of the nodes of the cloud as well as determining the proper frequency for recalculating the maximum expected load, which improves the determination of the optimum number of resources required, therefore maximizes energy efficiency and minimizes SLA violations.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126915164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575255
P. Hershey, Mu-Cheng Wang, Doug Toppin
Manpower is driving up DoD costs while DoD budgets are shrinking; therefore the DoD customer seeks a solution to enable increased mission capacity along with staff reductions. One way to accomplish this is through an autonomous capability to support end-to-end mission activities. The Mission Information Autonomous Intelligent Decision Engine (MiAide) approach for meeting this objective is to create a system of systems (SoS) that work together to enable automation of tasks previously done by humans. MiAide is built upon a novel, but standards-based architecture, that equips MiAide for real end-to-end DoD mission scenarios using a context switching decision engine that distributes actionable information for each specific mission phase to an intelligent mission console (IMC) user interface. The IMC provides secure and high quality communications between mobile end-users and the Mission Operation Center, and it enables graceful handover between operators of different mission phases. MiAide has been demonstrated for aspects of both manned and Unmanned Air Systems (UASs) and proven to reduce staffing while improving mission capacity (e.g., multiply number of missions and mission functions) across all stages of the mission life cycle.
{"title":"System of systems for autonomous mission decisions","authors":"P. Hershey, Mu-Cheng Wang, Doug Toppin","doi":"10.1109/SYSoSE.2013.6575255","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575255","url":null,"abstract":"Manpower is driving up DoD costs while DoD budgets are shrinking; therefore the DoD customer seeks a solution to enable increased mission capacity along with staff reductions. One way to accomplish this is through an autonomous capability to support end-to-end mission activities. The Mission Information Autonomous Intelligent Decision Engine (MiAide) approach for meeting this objective is to create a system of systems (SoS) that work together to enable automation of tasks previously done by humans. MiAide is built upon a novel, but standards-based architecture, that equips MiAide for real end-to-end DoD mission scenarios using a context switching decision engine that distributes actionable information for each specific mission phase to an intelligent mission console (IMC) user interface. The IMC provides secure and high quality communications between mobile end-users and the Mission Operation Center, and it enables graceful handover between operators of different mission phases. MiAide has been demonstrated for aspects of both manned and Unmanned Air Systems (UASs) and proven to reduce staffing while improving mission capacity (e.g., multiply number of missions and mission functions) across all stages of the mission life cycle.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127964381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575236
Richard K. Lomotey, R. Deters
The major challenge that the big data era brings to the services computing landscape is debris of unstructured data. The high-dimensional data is in heterogeneous formats, schemaless, and requires multiple storage APIs is some cases. This situation has made it almost impractical to apply existing data mining techniques which are designed for schema-based data sources in a knowledge discovery in database (KDD) process. In this paper, a tool called TouchR is proposed which algorithmically relies on the Hidden Markov Model (HMM) to extract terms from data silos; specifically, distributed NoSQL databases- which we model as network graph. Our use case graph consists of storage nodes such as CouchDB, Neo4J, DynamoDB etc. The evaluation of TouchR shows high accuracy for terms extraction and organization.
{"title":"Terms extraction from unstructured data silos","authors":"Richard K. Lomotey, R. Deters","doi":"10.1109/SYSoSE.2013.6575236","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575236","url":null,"abstract":"The major challenge that the big data era brings to the services computing landscape is debris of unstructured data. The high-dimensional data is in heterogeneous formats, schemaless, and requires multiple storage APIs is some cases. This situation has made it almost impractical to apply existing data mining techniques which are designed for schema-based data sources in a knowledge discovery in database (KDD) process. In this paper, a tool called TouchR is proposed which algorithmically relies on the Hidden Markov Model (HMM) to extract terms from data silos; specifically, distributed NoSQL databases- which we model as network graph. Our use case graph consists of storage nodes such as CouchDB, Neo4J, DynamoDB etc. The evaluation of TouchR shows high accuracy for terms extraction and organization.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130009992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575247
T. Shaneyfelt, M. Jamshidi, S. Agaian
A robotic system of crane systems is proposed and simulated for a vanilla pollination application. The system could be used for other applications where a grid of posts is serviced in an area suitable for overhead cranes. Existing crane systems could work together with new crane equipment in a hierarchical manner. A docking crane system with two or more six degrees of freedom cranes services the area around posts upon which it docks. Vision is used for subject recognition and control feedback.
{"title":"Hierarchical robotic crane system for post grid array environments","authors":"T. Shaneyfelt, M. Jamshidi, S. Agaian","doi":"10.1109/SYSoSE.2013.6575247","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575247","url":null,"abstract":"A robotic system of crane systems is proposed and simulated for a vanilla pollination application. The system could be used for other applications where a grid of posts is serviced in an area suitable for overhead cranes. Existing crane systems could work together with new crane equipment in a hierarchical manner. A docking crane system with two or more six degrees of freedom cranes services the area around posts upon which it docks. Vision is used for subject recognition and control feedback.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115612212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575257
R. Kazman, Klaus Schmid, C. Nielsen, John Klein
Architecting systems of systems is well known to be a formidable challenge. A major aspect in this is defining the integration among the systems that constitute the system of systems. In this paper, we aim to support the SoS architect by systematically developing a way to characterize system of systems integration patterns. These characteristics at the same time support the architecting process by highlighting important issues a SoS architect needs to consider. We discuss the consolidated template and illustrate it with an example pattern. We also discuss the integration of this novel pattern approach into the overall architecting process.
{"title":"Understanding patterns for system of systems integration","authors":"R. Kazman, Klaus Schmid, C. Nielsen, John Klein","doi":"10.1109/SYSoSE.2013.6575257","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575257","url":null,"abstract":"Architecting systems of systems is well known to be a formidable challenge. A major aspect in this is defining the integration among the systems that constitute the system of systems. In this paper, we aim to support the SoS architect by systematically developing a way to characterize system of systems integration patterns. These characteristics at the same time support the architecting process by highlighting important issues a SoS architect needs to consider. We discuss the consolidated template and illustrate it with an example pattern. We also discuss the integration of this novel pattern approach into the overall architecting process.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115927674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-06-02DOI: 10.1109/SYSoSE.2013.6575246
W. Lubega, A. Farid
The energy-water nexus has been studied predominantly through discussions of policy options supported by data surveys and technology considerations. At a technological level, there have been attempts to optimize coupling points between the electricity and water systems to reduce the water-intensity of technologies in the former and the energy-intensity of technologies in the latter. To our knowledge, there has been little discussion of the energy-water nexus from an engineering systems perspective. As the energy-water nexus presents a large scale, multidisciplinary problem with various technological and non-technological dimensions, efforts for coordinated control, operation & planning of the energy and water systems would benefit from the modeling platforms developed in systems engineering. This paper presents a meta-architecture of the energy-water nexus in the electricity supply, engineered water supply and wastewater management systems developed using the Systems Modeling Language (SysML). This meta-architecture serves to elucidate the nexus for qualitative discussions. Once instantiated such an architecture can serve as a conceptual framework upon which quantitative planning and control approaches can be based.
{"title":"A meta-system architecture for the energy-water nexus","authors":"W. Lubega, A. Farid","doi":"10.1109/SYSoSE.2013.6575246","DOIUrl":"https://doi.org/10.1109/SYSoSE.2013.6575246","url":null,"abstract":"The energy-water nexus has been studied predominantly through discussions of policy options supported by data surveys and technology considerations. At a technological level, there have been attempts to optimize coupling points between the electricity and water systems to reduce the water-intensity of technologies in the former and the energy-intensity of technologies in the latter. To our knowledge, there has been little discussion of the energy-water nexus from an engineering systems perspective. As the energy-water nexus presents a large scale, multidisciplinary problem with various technological and non-technological dimensions, efforts for coordinated control, operation & planning of the energy and water systems would benefit from the modeling platforms developed in systems engineering. This paper presents a meta-architecture of the energy-water nexus in the electricity supply, engineered water supply and wastewater management systems developed using the Systems Modeling Language (SysML). This meta-architecture serves to elucidate the nexus for qualitative discussions. Once instantiated such an architecture can serve as a conceptual framework upon which quantitative planning and control approaches can be based.","PeriodicalId":346069,"journal":{"name":"2013 8th International Conference on System of Systems Engineering","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124352149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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