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Ashjaei, Seyed Mohammad HosseinORCID iD iconorcid.org/0000-0003-3469-1834
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Publications (10 of 45) Show all publications
Causevic, A., Lisova, E., Ashjaei, S. M. & Ashgar, S. U. (2019). On Incorporating Security Parameters in Service Level Agreements. In: CLOSER 2019 - Proceedings of the 9th International Conference on Cloud Computing and Services Science2019: . Paper presented at The 9th International Conference on Cloud Computing and Services Science CLOSER2019, 02 May 2019, Heraklion, Greece (pp. 48-57).
Open this publication in new window or tab >>On Incorporating Security Parameters in Service Level Agreements
2019 (English)In: CLOSER 2019 - Proceedings of the 9th International Conference on Cloud Computing and Services Science2019, 2019, p. 48-57Conference paper, Published paper (Refereed)
Abstract [en]

With development of cloud computing new ways for easy, on-demand, Internet-based access to computing resources have emerged. In such context a Service Level Agreement (SLA) enables contractual agreements between service providers and users. Given an SLA, service users are able to establish trust in that the service outcome corresponds to what they have demanded during the service negotiation process. However, an SLA provides a limited support outside of basic Quality of Service (QoS) parameters, especially when it comes to security. We find security as an important factor to be included in adjusting an SLA according to user defined objectives. Incorporating it in an SLA is challenging due to difficulty to provide complete and quantifiable metrics, thus we propose to focus on a systematic way of addressing security using the security process. In this paper we investigate ways in which security might be incorporated already in the service negotiation process and captured in an SLA. We propose a corresponding process to develop and maintain an SLA that considers both design-, and run-time. To demonstrate the approach we built upon the existing SLAC language and extend its syntax to support security. An example of a service being provided with security guarantees illustrates the concept.

National Category
Engineering and Technology Computer Systems
Identifiers
urn:nbn:se:mdh:diva-43917 (URN)2-s2.0-8506750014 (Scopus ID)9789897583650 (ISBN)
Conference
The 9th International Conference on Cloud Computing and Services Science CLOSER2019, 02 May 2019, Heraklion, Greece
Projects
XPRES - Excellence in Production ResearchFuture factories in the CloudSAFSEC-CPS -- Securing the safety of autonomous cyber-physical systems
Available from: 2019-06-14 Created: 2019-06-14 Last updated: 2019-06-27Bibliographically approved
Causevic, A., Lisova, E., Ashjaei, S. M. & Ashgar, S. U. (2019). On incorporating security parameters in service level agreements. In: CLOSER 2019 - Proceedings of the 9th International Conference on Cloud Computing and Services Science: . Paper presented at 9th International Conference on Cloud Computing and Services Science, CLOSER 2019, 2 May 2019 through 4 May 2019 (pp. 48-57). SciTePress
Open this publication in new window or tab >>On incorporating security parameters in service level agreements
2019 (English)In: CLOSER 2019 - Proceedings of the 9th International Conference on Cloud Computing and Services Science, SciTePress , 2019, p. 48-57Conference paper, Published paper (Refereed)
Abstract [en]

With development of cloud computing new ways for easy, on-demand, Internet-based access to computing resources have emerged. In such context a Service Level Agreement (SLA) enables contractual agreements between service providers and users. Given an SLA, service users are able to establish trust in that the service outcome corresponds to what they have demanded during the service negotiation process. However, an SLA provides a limited support outside of basic Quality of Service (QoS) parameters, especially when it comes to security. We find security as an important factor to be included in adjusting an SLA according to user defined objectives. Incorporating it in an SLA is challenging due to difficulty to provide complete and quantifiable metrics, thus we propose to focus on a systematic way of addressing security using the security process. In this paper we investigate ways in which security might be incorporated already in the service negotiation process and captured in an SLA. We propose a corresponding process to develop and maintain an SLA that considers both design-, and run-time. To demonstrate the approach we built upon the existing SLAC language and extend its syntax to support security. An example of a service being provided with security guarantees illustrates the concept.

Place, publisher, year, edition, pages
SciTePress, 2019
Keywords
Cloud computing, Run-time monitoring, Security, Security process, Service level agreement, SLAC, Outsourcing, Contractual agreements, Negotiation process, Quality of Service parameters, Runtime Monitoring, Security parameters, Service Level Agreements, Quality of service
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:mdh:diva-44880 (URN)2-s2.0-85067500149 (Scopus ID)9789897583650 (ISBN)
Conference
9th International Conference on Cloud Computing and Services Science, CLOSER 2019, 2 May 2019 through 4 May 2019
Note

Conference code: 148430; Export Date: 11 July 2019; Conference Paper

Available from: 2019-07-11 Created: 2019-07-11 Last updated: 2019-07-11Bibliographically approved
Cao, J., Ashjaei, S. M., Cuijpers, P. J. .., J. Bril, R. & Lukkien, J. (2018). An Independent yet Efficient Analysis of Bandwidth Reservation for Credit-based Shaping in Ethernet TSN. In: International Workshop on Factory Communication Systems WFCS'18: . Paper presented at International Workshop on Factory Communication Systems WFCS'18, 13 Jun 2018, Imperia, Italy (pp. 1-10). Imperia, Italy
Open this publication in new window or tab >>An Independent yet Efficient Analysis of Bandwidth Reservation for Credit-based Shaping in Ethernet TSN
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2018 (English)In: International Workshop on Factory Communication Systems WFCS'18, Imperia, Italy, 2018, p. 1-10Conference paper, Published paper (Refereed)
Abstract [en]

Ethernet TSN is an upcoming communication standard for industrial distributed embedded systems with high demands on bandwidth and traffic delay. In this paper, we present and prove an improved analysis to determine bandwidth reservations for credit based shapers in a single Ethernet TSN switch. We compare this new analysis, which is based on eligible intervals, to the state-of-the-art bandwidth reservation analysis based on busy periods through experiments. Despite its low complexity and the independence of the knowledge of the interfering traffic, the results show an improvement of efficiency, i.e., a decrease of the required bandwidth, for the new analysis.

Place, publisher, year, edition, pages
Imperia, Italy: , 2018
National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-38966 (URN)10.1109/WFCS.2018.8402345 (DOI)2-s2.0-85050016783 (Scopus ID)978-1-5386-1066-4 (ISBN)
Conference
International Workshop on Factory Communication Systems WFCS'18, 13 Jun 2018, Imperia, Italy
Projects
Future factories in the Cloud
Available from: 2018-04-10 Created: 2018-04-10 Last updated: 2018-08-16Bibliographically approved
Girs, S. & Ashjaei, S. M. (2018). Designing a Bandwidth Management Scheme for Heterogeneous Virtualized Networks. In: International Conference on Emerging Technologies and Factory Automation - Work in Progress Session ETFA-WiP'18: . Paper presented at International Conference on Emerging Technologies and Factory Automation - Work in Progress Session ETFA-WiP'18, 04 Sep 2018, Torino, Italy (pp. 1079-1082). , Article ID 8502450.
Open this publication in new window or tab >>Designing a Bandwidth Management Scheme for Heterogeneous Virtualized Networks
2018 (English)In: International Conference on Emerging Technologies and Factory Automation - Work in Progress Session ETFA-WiP'18, 2018, p. 1079-1082, article id 8502450Conference paper, Published paper (Refereed)
Abstract [en]

With envisioned increased density and complexity of future industrial networks, software defined networking (SDN) and network virtualization are considered to be promising techniques for network organization and management. Thus, in this paper we look at heterogeneous software defined networks consisting of several virtual slices and present a bandwidth control algorithm, which is designed to provide control over shared bandwidth both in wired and wireless parts of the network. The designed algorithm has been implemented in real hardware and in this paper we present the initial test results.

National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-40888 (URN)10.1109/ETFA.2018.8502450 (DOI)000449334500139 ()2-s2.0-85057233622 (Scopus ID)9781538671085 (ISBN)
Conference
International Conference on Emerging Technologies and Factory Automation - Work in Progress Session ETFA-WiP'18, 04 Sep 2018, Torino, Italy
Projects
Future factories in the Cloud
Available from: 2018-09-18 Created: 2018-09-18 Last updated: 2018-12-27Bibliographically approved
Ashjaei, S. M., Khalilzad, N. & Mubeen, S. (2018). Modeling, Designing and Analyzing Resource Reservations in Distributed Embedded Systems. In: Springer (Ed.), Real-Time Modelling and Processing for Communication Systems: (pp. 203-256). Springer
Open this publication in new window or tab >>Modeling, Designing and Analyzing Resource Reservations in Distributed Embedded Systems
2018 (English)In: Real-Time Modelling and Processing for Communication Systems / [ed] Springer, Springer , 2018, p. 203-256Chapter in book (Other academic)
Place, publisher, year, edition, pages
Springer, 2018
National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-38618 (URN)10.1007/978-3-319-72215-3_9 (DOI)2-s2.0-85057289909 (Scopus ID)978-3-319-72214-6 (ISBN)978-3-319-72215-3 (ISBN)
Projects
PRESS - Predictable Embedded Software SystemsFuture factories in the Cloud
Available from: 2018-03-06 Created: 2018-03-06 Last updated: 2019-04-11Bibliographically approved
Aglianò, S., Ashjaei, S. M., Behnam, M. & Lo Bello, L. (2018). Resource Management and Control in Virtualized SDN Networks. In: CSI International Symposium on Real-Time and Embedded Systems and Technologies REST'18: . Paper presented at CSI International Symposium on Real-Time and Embedded Systems and Technologies REST'18, 09 May 2018, Tehran, Iran (pp. 47-53).
Open this publication in new window or tab >>Resource Management and Control in Virtualized SDN Networks
2018 (English)In: CSI International Symposium on Real-Time and Embedded Systems and Technologies REST'18, 2018, p. 47-53Conference paper, Published paper (Refereed)
Abstract [en]

Software defined networking and network virtual-ization are widely considered promising techniques for reducing the complexity of network management in many contexts that require high Quality of Service (QoS) and the support for heterogeneous architectures. In this paper we address a network architecture, here called a virtualized SDN network, that combines the benefits of SDN and virtualization. To cope with the demand for efficiently sharing a platform among several services, here a resource management mechanism to reserve and control network resources among various services in the virtualized SDN networks is proposed. The mechanism is implemented on an SDN controller and a set of experiments show the effectiveness of the proposed approach.

National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-38641 (URN)10.1109/RTEST.2018.8397078 (DOI)000467076600007 ()2-s2.0-85050505349 (Scopus ID)9781538614754 (ISBN)
Conference
CSI International Symposium on Real-Time and Embedded Systems and Technologies REST'18, 09 May 2018, Tehran, Iran
Projects
Future factories in the Cloud
Available from: 2018-03-02 Created: 2018-03-02 Last updated: 2019-05-24Bibliographically approved
Ashjaei, S. M., Clegg, K., Corneo, L., Hawkins, R., Jaradat, O., Gulisano, V. & Nikolakopoulos, Y. (2018). Service Level Agreements for Safe and Configurable Production Environments. In: International Conference on Emerging Technologies and Factory Automation - Work in Progress Session ETFA-WiP'18: . Paper presented at International Conference on Emerging Technologies and Factory Automation - Work in Progress Session ETFA-WiP'18, 04 Sep 2018, Torino, Italy (pp. 1252-1255). , Article ID 8502568.
Open this publication in new window or tab >>Service Level Agreements for Safe and Configurable Production Environments
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2018 (English)In: International Conference on Emerging Technologies and Factory Automation - Work in Progress Session ETFA-WiP'18, 2018, p. 1252-1255, article id 8502568Conference paper, Published paper (Refereed)
Abstract [en]

This paper focuses on Service Level Agreements (SLAs) for industrial applications that aim to port some of the control functionalities to the cloud. In such applications, industrial requirements should be reflected in SLAs. In this paper, we present an approach to integrate safety-related aspects of an industrial application to SLAs. We also present the approach in a use case. This is an initial attempt to enrich SLAs for industrial settings to consider safety aspects, which has not been investigated thoroughly before.

National Category
Engineering and Technology Computer Systems
Identifiers
urn:nbn:se:mdh:diva-40884 (URN)10.1109/ETFA.2018.8502568 (DOI)000449334500177 ()2-s2.0-85057241752 (Scopus ID)9781538671085 (ISBN)
Conference
International Conference on Emerging Technologies and Factory Automation - Work in Progress Session ETFA-WiP'18, 04 Sep 2018, Torino, Italy
Projects
XPRES - Excellence in Production ResearchFuture factories in the Cloud
Available from: 2018-09-18 Created: 2018-09-18 Last updated: 2018-12-27Bibliographically approved
Iqbal, Z., Almeida, L. & Ashjaei, S. M. (2017). Analyzing the Efficiency of Sporadic Reservations on Ethernet with FTT-SE. In: International Conference on Emerging Technologies And Factory Automation ETFA'17: . Paper presented at International Conference on Emerging Technologies And Factory Automation ETFA'17, 12 Aug 2017, Limassol, Cyprus.
Open this publication in new window or tab >>Analyzing the Efficiency of Sporadic Reservations on Ethernet with FTT-SE
2017 (English)In: International Conference on Emerging Technologies And Factory Automation ETFA'17, 2017Conference paper, Published paper (Refereed)
Abstract [en]

Ethernet is a promising candidate for networking real-time embedded systems such as automobiles, and it is already used in several embedded scopes, such as airplanes and trains. Moreover, its higher bandwidth enables applications made of dispersed embedded systems that exchange large amounts of data through the so-called Internet-of-Things, such as wide-area video sensing. In this realm, network reservations are an important design element that favor composability in the time domain thereby supporting the design of complex systems. However, reservations may impact negatively on the network bandwidth efficiency due to over-specification, particularly when they are designed to meet worst-case delay constraints. In this work, we use a specific Ethernet protocol that provides real-time reservations, namely FTT-SE, and we assess through extensive simulations the efficiency of a worst-case network delay analysis for sporadic reservations associated to asynchronous messages. Essentially, we compare the analytical worst-case delay with the one observed in the simulations using two data sets comprising up to 20000 and 100000 message sets, respectively, and we change the system configuration, namely properties of the message sets and network and protocol configuration parameters. We find that the analysis is accurate, i.e. matches observations, for a significant percentage of messages in the message sets (up to 60% on average). Conversely, we found that a small percentage of message sets (below 6%) generated rather pessimistic analytic estimates exceeding the observations by 6 times, thus with a negative impact on efficiency. The results we present in the paper, particularly their distributions, inform system designers of how to tune their designs to improve network bandwidth efficiency under strict timing constraints.

National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-35515 (URN)10.1109/ETFA.2017.8247607 (DOI)000427812000042 ()2-s2.0-85044444451 (Scopus ID)9781509065059 (ISBN)
Conference
International Conference on Emerging Technologies And Factory Automation ETFA'17, 12 Aug 2017, Limassol, Cyprus
Projects
PRESS - Predictable Embedded Software Systems
Available from: 2017-06-01 Created: 2017-06-01 Last updated: 2019-06-25Bibliographically approved
Ashjaei, M., Khalilzad, N., Mubeen, S., Behnam, M., Sander, I., Almeida, L. & Nolte, T. (2017). Designing End-to-end Resource Reservations in Predictable Distributed Embedded Systems. Real-time systems, 53(6), 916-956
Open this publication in new window or tab >>Designing End-to-end Resource Reservations in Predictable Distributed Embedded Systems
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2017 (English)In: Real-time systems, ISSN 0922-6443, E-ISSN 1573-1383, Vol. 53, no 6, p. 916-956Article in journal (Refereed) Published
Abstract [en]

Contemporary distributed embedded systems in many domains have become highly complex due to ever-increasing demand on advanced computer controlled functionality. The resource reservation techniques can be effective in lowering the software complexity, ensuring predictability and allowing flexibility during the development and execution of these systems. This paper proposes a novel end-to-end resource reservation model for distributed embedded systems. In order to support the development of predictable systems using the proposed model, the paper provides a method to design resource reservations and an end-to-end timing analysis. The reservation design can be subjected to different optimization criteria with respect to runtime footprint, overhead or performance. The paper also presents and evaluates a case study to show the usability of the proposed model, reservation design method and end-to-end timing analysis. 

National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-35506 (URN)10.1007/s11241-017-9283-6 (DOI)000412536700004 ()2-s2.0-85020515685 (Scopus ID)
Projects
PRESS - Predictable Embedded Software SystemsFuture factories in the CloudPreView: Developing Predictable Vehicle Software on Multi-core
Available from: 2017-05-31 Created: 2017-05-31 Last updated: 2018-07-25Bibliographically approved
Ashjaei, S. M. & Bengtsson, M. (2017). Enhancing Smart Maintenance Management Using Fog Computing Technology. In: 2017 International Conference on Industrial Engineering and Engineering Management IEEM: . Paper presented at 2017 International Conference on Industrial Engineering and Engineering Management IEEM, 10 Dec 2017, Singapore, Singapore (pp. 1561-1565).
Open this publication in new window or tab >>Enhancing Smart Maintenance Management Using Fog Computing Technology
2017 (English)In: 2017 International Conference on Industrial Engineering and Engineering Management IEEM, 2017, p. 1561-1565Conference paper, Published paper (Refereed)
Abstract [en]

In order for factories to stay competitive in the current open global market, there should be efforts to put on optimizing the value stream of producing goods. Within this context, Industrial Internet of Things (IIoT) has been emerged as a technology aiming at achieving high productivity performance in manufacturing. A smart manufacturing approach also requires a smart maintenance management as it plays a crucial role in securing the productivity. IIoT applications are traditionally completed by the cloud computing technology to serve the required services. In this paper, we argue that maintenance processes have requirements that cannot be accomplished by solely the cloud computing technology. We identify several of these requirements. Then, we propose a platform using the fog computing technology, as a recently raised technology in IIoT, to enhance the smart maintenance management. We also discuss the ability of the platform in fulfilling the identified requirements.

Series
International Conference on Industrial Engineering and Engineering Management IEEM, ISSN 2157-3611
Keywords
Smart maintenance; Cloud Computing; Fog Computing; Industry 4.0; Smart factory
National Category
Other Engineering and Technologies
Identifiers
urn:nbn:se:mdh:diva-37046 (URN)000428267800317 ()2-s2.0-85045251407 (Scopus ID)
Conference
2017 International Conference on Industrial Engineering and Engineering Management IEEM, 10 Dec 2017, Singapore, Singapore
Projects
XPRES - Excellence in Production ResearchFuture factories in the Cloud
Available from: 2017-11-16 Created: 2017-11-16 Last updated: 2018-04-26Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-3469-1834

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