Position: PhD Student (Research Fellow at Q2S)
Office: E-257
Email: andresgm@q2s.ntnu.no
Phone: +47 73 59 27 83
Mobile: +47 48 23 48 96

Researcher at Q2S and PhD student at the Telematics Department NTNU, with experience in Mathematical Modeling, Fault-tolerant Systems, SLA Risk assessment, Telecommunications Networks, Systems Dependability, Data Modeling and Parameters Estimation, Resource Optimization, Discrete Events Simulations and Traffic Engineering. Several publications in Journals and Conferences. Active international collaboration in the European project on the Network of the Future (Euro-NF). Three years experience in IT jobs in Industry.

• PhD: Department of Telematics NTNU. Thesis: Methods for Guaranteeing Contracted Availability In Connected Oriented Networks. (Estimated Thesis Defense Date April 2012).
• MASTER: Master in Telecommunications Engineering. Universidad Nacional de Colombia (First Year). Vienna University of Technology (Second Year).
• BACHELOR (5 Years Degree): Electronics Engineer. Universidad Javeriana

• PhD Student: (2008/09 – 2012/04). Q2S - NTNU.
• Researcher: (2011/07 – 2011/12). Telenor – Q2S. Main Tasks: Availability and SLA risk assessment in Cloud Computing environments. (Project Developed as part of the PhD studies) .
• Researcher: (2010/01 – 2010/12). Euro NF – UNINETT. Main Tasks: Measurements of Failure Data in the UNINETT Network, Data processing and Parameters Estimation, Correlation Modeling and Planning the provision of reliable connections. (Project Developed as part of the PhD studies) .
• Master Thesis: (2006/02 – 2007/10). IBK - GITUN. Thesis : Design of a Traffic Engineering Model for IP/MPLS networks using Tempo-Dependent and State-Dependent methods for the optimization and the appropriate use of the Network Resources.

• IT ENGINEER: (2007/11 – 2008/08). Louisiana Green Fuels. USA. Main Tasks: Network Administration, Network Security Issues, Video Conference Systems Setup and Management, VoIP projects.
• PROJECT ENGINEER: (2004/06 – 2006/02). Telecorp ISP. Main Tasks: ISP Network Administration, Management and support of DNS, WEB, Mail and Radius Servers, Configuration and support in Cisco routing and switches devices, Calling Card and VoIP Implementation under Quintum Technologies.
• SUPPORT ENGINEER: (2003/05 – 2004/06). Impsat. Main Tasks: Monitoring of Networks Management platforms (What’s Up, HP Openview, Big Brother), Diagnostic and Solution of backbone and last mille networks problems, Configuration and support in Cisco routing and switches devices.

• Andres J. Gonzalez and Bjarne E. Helvik. Guaranteeing Service Availability in SLAs; A Study of the Risk Associated with Contract Period and Failure Process. IEEE Latin America Transactions, Volume 8, Issue 4. 2010.(DOI)
• Andres J. Gonzalez and Bjarne E. Helvik. Characterization of Router and Link Failure Processes in UNINETT’s IP Backbone Network. International Journal of Space-Based and Situated Computing (IJSSC). (To be published in December 2011)

• Andres J. Gonzalez and Bjarne E. Helvik. Guaranteeing Service Availability in SLAs; A Study of the Risk Associated with Contract Period and Failure Process. In IEEE Latin-American Conference on Communications [LATINCOM2009], September 2009. (DOI)
• Andres J. Gonzalez and Bjarne E. Helvik. Dynamic sharing mechanism for guaranteed availability in MPLS based networks. In Proceedings of IEEE 2010 International Communications Quality and Reliability Workshop [CQR], Vancouver, British Columbia, Canada, June 8 – 10 2010.(DOI)
• Andres J. Gonzalez, Bjarne E. Helvik, Jon K. Hellan, and Pirkko Kuusela. Analysis of dependencies between failures in the UNINETT IP backbone network. In IEEE 16th Pacific Rim International Symposium on Dependable Computing [PRDC2010], October 2010.(DOI)
• Andres J. Gonzalez and Bjarne E. Helvik. Analysis of failures characteristics in the UNINETT IP Backbone network. IEEE 7th International Symposium on Frontiers in Networking with Applications, FINA2011. Jun. March 2011.(DOI)
• Andres J. Gonzalez and Bjarne E. Helvik. Guaranteeing Service Availability in SLAs on Networks with Non Independent Failures. IEEE-IFIP International Workshop on Design of Reliable Communication Networks, DRCN 2011. October 2011.

I was teaching assistant in the following courses (Dept. of Telematics):

Autumn 2010 TTM4110 Dependability and Performance with Discrete Event Simulation
Autumn 2011 TTM4110 Dependability and Performance with Discrete Event Simulation

The following courses are part of my PhD education

TM8101 Dependability Analysis of Information and Communication Systems Autumn 2008
IØ8401 Stochastic Optimization Autumn 2008
TM8102 Traffic Analysis of Communication Networks Spring 2009
TTM4128 Network and Service Management Spring 2009
Euro-NF PhD Course Discrete Optimization with Application in Wireless Networks Autumn 2009
Euro-NF PhD Course Mixed Integer Programming in Survivable Telecommunication Network Design and Routing Autumn 2010