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NETCONF Interoperability Testing [chapter]

Ha Manh Tran, Iyad Tumar, Jürgen Schönwälder
2009 Lecture Notes in Computer Science  
Interoperability testing is an important part of the lifecycle of a protocol. Interoperability tests not only help to reduce implementation bugs, but they also often improve the accuracy of a protocol specification. In a pursuit to improve Network Configuration (NETCONF) interoperability and foster it for community-based education, we have developed and deployed a NETCONF Interoperability Lab. The lab provides a platform to execute test-cases against an online catalogue of NETCONF server and
more » ... ent implementations. The NETCONF Interoperability lab is available online at: http://www.interop-lab.net.
doi:10.1007/978-3-642-02627-0_7 fatcat:laotq4qaezd2zog2qwrj7swosm

Resource Management of Disruption Tolerant Networks [chapter]

Iyad Tumar, Jürgen Schönwälder
2008 Lecture Notes in Computer Science  
Modem Power Management Scheme for UWNs 4 Summary, Conclusions and Future Directions Iyad Tumar Resource Management of Disruption Tolerant Networks  ...  Radio Tx Rx Idle Sleep Bit Rate WaveLan 1.3272 0.9670 0.8437 0.0664 2 Mbps XTend 1 0.36 0.36 0.01 115.2 Kbps Iyad Tumar Resource Management of Disruption Tolerant Networks 16 Neighbor  ... 
doi:10.1007/978-3-540-70587-1_19 fatcat:ft3cigur45hltowvb4x377bkve

Effects of climate change and anthropogenic ocean acidification on underwater acoustic communications

Anuj Sehgal, Iyad Tumar, Jurgen Schonwalder
2010 OCEANS'10 IEEE SYDNEY  
Global climate change is a widely accepted phenomenon and it is well understood that it is also leading to changes in the oceanic conditions. Increased industrial activities have also led to anthropogenic ocean acidification, the effects of which, on marine ecosystems, is a vigorously investigated topic. However, the impact of these phenomenon on underwater acoustic communication has not been investigated thoroughly. Fluctuations in ambient ocean conditions, such as salinity, acidity and
more » ... ture can lead to changes in the underwater acoustic channel performance. Since both marine mammals and man-made underwater wireless networks depend upon acoustic communications it is important to understand the effects in this context as well. An insight into the effects of climate change and anthropogenic ocean acidification could aid in designing better communication systems and also help explain some observed changes in marine mammal communication behavior. In this paper we present the results of a study conducted to better understand the effects of global climate change. Along with a brief presentation of the mathematical model, results of increasing temperature and acidity are discussed and effects on digital and marine mammal communication are both explored.
doi:10.1109/oceanssyd.2010.5603511 fatcat:vmmz27rxn5bv7dal7niytpdb3i

Boosted Whale Optimization Algorithm With Natural Selection Operators for Software Fault Prediction

Yousef Hassouneh, Hamza Turabieh, Thaer Thaher, Iyad Tumar, Hamouda Chantar, Jingwei Too
2021 IEEE Access  
Tumar et al.  ...  IYAD TUMAR received the bachelor's degree in electrical engineer (communication systems) and the master's degree in computational science from Birzeit University, Palestine, in 2002 and 2006, respectively  ... 
doi:10.1109/access.2021.3052149 fatcat:6qhesbgztnahfmotntsw2fteni

Reducing power consumption in LEO satellite network

Mohammed Hussein, Abdellatif Abu-Issa, Iyad Tumar, Abdalkarim Awad
2021 International Journal of Power Electronics and Drive Systems (IJPEDS)  
Current low earth orbit (LEO) satellite network display poor power efficiency, running network devices at full capacity all the time regardless of the traffic matrix and the distribution of the population over the Globe. Most of the research on energy efficiency of LEO satellites has focused on component level or link level. Therefore, this kind of research is not holistic to try to look at the satellite system as a single node. To enhance the energy efficiency. The solution should exploits
more » ... ipath routing and load balancing. LEO network is overprovisioned, and hence selectively shutting down some satellite nodes and links during off-peaks hours seems like a good way to reduce energy consumption. In this paper, we exploit the fact that due to geographical and climatic conditions, some satellite links are expected to be loaded with data while others remain unused. Our approach is to power down satellite nodes and links during period of low traffic, while guaranteeing the connectivity and QoS. Finding the optimal solution is NP-problem and therefore, we explore in this work two heuristic algorithms. We evaluate our heuristics on a realistic LEO topology and real traffic matrices. Simulation results show that the power saving can be significant.
doi:10.11591/ijece.v11i3.pp2256-2265 fatcat:ivznlbccjzchljtzsdkz32ewta

Evaluation of IPv6 over low-power wireless personal area networks implementations

Kevin Dominik Korte, Iyad Tumar, Jurgen Schonwalder
2009 2009 IEEE 34th Conference on Local Computer Networks  
A common radio technology used in wireless sensor networks is the IEEE 802.15.4 standard. Wireless sensor networks have so far used custom, light-weight, and application specific network protocols on top of IEEE 802.15.4, often optimized for resource constrained low power hardware. In order to achieve interoperability at the network layer, the Internet Engineering Task Force published a standard for the transmission of IPv6 packets over IEEE 802.15.4 low-power wireless personal area networks,
more » ... ich provides an additional layer adapting the IPv6 network layer to the low power and resource constrained IEEE 802.15.4 link layer. This paper provides an evaluation of several independent implementations of the IPv6 over IEEE 802.15.4 standard. We describe the characteristics of the implementations and the protocol features supported. Our interoperability tests, carried out using two different hardware platforms, show that at least three implementations are to a large extend compatible with each other. At the end of the paper, we summarize recent work in the IETF to improve the IPv6 over IEEE 802.15.4 technology.
doi:10.1109/lcn.2009.5355015 dblp:conf/lcn/KorteTS09 fatcat:eepjzztsfrallnyni5rnm4aj74

Power Management for Acoustic Underwater Networks

Iyad Tumar, Anuj Sehgal, Jurgen Schonwalder
2009 2009 6th IEEE Annual Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks Workshops  
Research Questions • What are the efcient approaches to saving energy in sparse underwater acoustic networks with the minimum possible degradation of network performance? • What impact does trafc load have on the power management scheme in underwater acoustic networks? Power Management Approach • Our scheme combines an asynchronous approach, where nodes work on their own wake up schedules without synchronized clocks, with an ondemand scheme where two acoustic modem are used.
doi:10.1109/sahcnw.2009.5172955 fatcat:66srdynaqzbovlfh7vhrildc7i

Utilization of idle time slot in spectrum sensing under noise uncertainty

Iyad Khalil Tumar, Adnan Mohammad Arar, Ayman Abd El Saleh
2022 International Journal of Power Electronics and Drive Systems (IJPEDS)  
ISSN: 2088-8708  Int Utilization of idle time slot in spectrum sensing under noise … (Iyad Khalil Tumar) 433 Int J Elec & Comp Eng ISSN: 2088-8708  Utilization of idle time slot in spectrum sensing  ...  under noise … (Iyad Khalil Tumar) 435 −  ISSN: 2088-8708 Int J Elec & Comp Eng, Vol. 12, No. 1, February 2022: 431-444 436 which corresponds to the sensing time consumed by the SU with SNR closed to  ...  Iyad Tumar is a reviewer for IEEE/ACM journals and conferences. He can be contacted at email: itumar@birzeit.edu. Adnan  ... 
doi:10.11591/ijece.v12i1.pp431-444 fatcat:uhcs4lji7va4toyqwgnuxyafku

Impact of Mobility Patterns on the Performance of a Disruption Tolerant Network with Multi-radio Energy Conservation

Iyad Tumar, Anuj Sehgal, Jürgen Schönwälder
2011 2011 IEEE International Conference on Advanced Information Networking and Applications  
Frequent partitions, intermittent connectivity and message delivery delay are the commonly observed characteristics of disruption tolerant networks (DTNs). These networks often operate over extended periods since they are regularly deployed in harsh and constrained environments. Efficient energy conservation is therefore necessary to prolong network lifetime. Most DTNs nodes depend on mobility to deliver messages to their destination. The introduction of energy conservation, using a high power
more » ... adio for data delivery and low power radio for neighbor discover to achieve higher energy savings, coupled with mobility can negatively impact the total connection opportunities. This makes it important to understand the effects that mobility patterns can have on the performance of DTNs when multi-radio energy conservation is used. In this paper we study the effects of random waypoint, Manhattan mobility, message-ferry, human and zebra mobility models on DTNs where a wake-up model multi-radio energy conservation is used. The simulation results show that absolute impact of mobility on energy savings is quite limited. It also appears that in high traffic load dense networks mobility impacts delivery ratios and average delays, while impact in low traffic is not pronounced. PREPRINT VERSION -© 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
doi:10.1109/aina.2011.83 dblp:conf/aina/TumarSS11 fatcat:chxymfds5battgrbyb4ydppqce

An IDE for NETCONF management applications

Paulo Tavares, Pedro Goncalves, Jose Luis Oliveira
2011 2011 7th Latin American Network Operations and Management Symposium  
According to tests conducted by Iyad Tumar et al. [14] the implementations, despite presenting some bugs, generally meet NETCONF specification from RFC 4741 and RFC 4742.  ... 
doi:10.1109/lanoms.2011.6102269 dblp:conf/lanoms/TavaresGO11 fatcat:7ky6sghp7vafhg5s4jd3b4vhvm

Political Martyrdom and Religious Censorship in Islamic Sicily: a Case Study During the Age of Ibrāhīm II (261-289/875-902)

Giuseppe Mandalà
2014 Al-Qantara : Revista de Estudios Arabes  
A Glossary of Technical Terms & Bibliography, p. 114. 41 "Yonder there is still a low-lying area entirely covered with papyrus (barbir), or rather bardi, which is [the plant] from which they make the tumar  ...  Muhammad al-Ifriqi (d. 275/888), a famous jurist, on whom see al-Khushani, Classes des savantes, pp. 227-229; al-Qadi 'Iyad, Tartib al-madarik wa-taqrib al-masalik fi ma'rifat a'lam madhhab Malik, ed.  ... 
doi:10.3989/alqantara.2014.007 fatcat:zcttxmss25djfb5a4qv3pbnlba

The Pesantren Tradition: A Study of the Role of the Kyai in the Maintenance of the Traditional Ideology of Islam in Java

Ronald A. Lukens-Bull, Zamakhsyari Dhofier
2000 Journal of Asian Studies  
Riyalah derives from the Arabic £iyad~ meaning religious exercises or devotions, such as recommended fasting on Mondays and Thursdays. Sufism.  ...  Hanafites tend at the same time to place more emphasis on man's responsibility than does al-Ashtari" (Watt 1974 : 176) . 33 Qunut is a special prayer read at the second raka ''ah of morning prayer. 34 tumar  ... 
doi:10.2307/2659290 fatcat:tb6tgw24ljfhzihazgw4hthkuy