Saulius Pavalkis


I'm Global User Support Manager and Analyst in MagicDraw R&D team for over 10 years with increasing responsibilities. My major expertise area is model-based requirements engineering. I'm the owner of a new Cameo Requirements Modeler product, which has been recently introduced in MagicDraw product line. I hold a PhD in model traceability from Kaunas University of Technology (KTU). I also hold multiple professional certificates: OMG-Certified UML Professional, OMG-Certified Expert in BPM, ITIL V3, OMG-Certified Systems Modeling Professional. I have written multiple research and practical articles in model-based software design. I'm the founder and chief editor of modelling community blog ( dedicated for sharing practical model-based engineering experience.

Oct 082017
Building Executable SysML Model – Automatic Transmission System (Part 1)

SysML allow both structural and behavioral modeling of the system. SysML models can be formally interpreted and executed. Ones executed analysis can be performed at system level. Ones we are good with simulation results we can prototype. Using programmable Lego Mindstors NXT for prototyping is an out of the box way to test and demonstrate […]

Jan 092017
Timing and Duration Analysis

During this webinar, you will learn how MagicDraw with Cameo Simulation Toolkit can be used to verify how particular system design satisfies time, duration, or performance requirements. The session demonstrates Timing concepts, different clocks, time steps Time units Time and duration constraints Duration simulation, parallel processes Timelines Recording Slides The webinar is delivered by Nerijus Jankevicius, […]

Nov 152016
Welcome to Systems Architecture Guild

“Everything new endangers something old… This is the price that must be paid for progress and it is worth it.” Hyman G. Rickover Good quality video tutorials and the best tips & tricks from Systems Engineers to Systems Engineers. Welcome to Systems Architecture Guild ( and its companion YouTube channel ( Author says “I’ve started […]

Nov 142016
Custom Metrics: How to Convert List of Elements into Number?

You might already thought about tracking metrics based on model data. However how difficult is to create your own metric? Using MagicDraw metrics capability and structured expression dialog to setup almost any metric logic and calculate it requires no coding. If you already using structured expression dialog to query model for derived properties or smart […]

Nov 012016
Total Mass, Cost, and Power Rollups

The rollup calculations are among the most common use cases in systems engineering. System modelers want to calculate total mass, cost, power, or another system dimension, based on individual values of all the parts in the model. During this webinar, you will learn how to perform different kind of rollup calculations in the MagicDraw model with Cameo […]

Oct 312016
Connection Between DoDAF and SysML

It is quite often we are asked about connection between DoDAF and SysML. They coexist together very well! Both are OMG standards (same comon metamodel behind), so everything is fully reusable and traceable. Positioning and connection points DoDAF framework provide tools to describe the enterprise architecture – starting from capabilities, going to operational level and […]

Jun 222016
Visual Model Analysis Overview

A modeling culture is the combination of modeling, model usage and model governance that together provide a productive way for applying model-driven development in the context of a particular organization. When we talk about model usage, we talk about impact analysis, coverage analysis, trade studies, behavioral simulations, testing, code generation, etc. Any example of model […]

Mar 242016
Thirty Meter Telescope SysML Model

The Thirty Meter Telescope (TMT) system is currently being developed by the TMT Observatory Corporation. The main objective for the TMT related analysis is to provide state-dependent power roll-ups for different operational scenarios and demonstrate that requirements are satisfied by the design as well as mass roll-ups and duration analysis of the operational use cases. […]

Mar 112016
Application of Model-Based System Engineering (MBSE) Principles to an Automotive Driveline Sub-System Architecture

This paper documents the real-world application of model-based systems engineering (MBSE) methodology and principles to an automotive driveline system. A system model developed in the course of this thesis supports the definition and sizing of the driveline system to best communicate and deliver functional specifications tied to customer requirements. Furthermore, this system model documents, organizes, […]

Jan 122016
Embedded Technology Industry Reports Significant Development Cost Reduction Using MBSE and PLE

“When compared to typical systems engineering endeavors, the application of model-based systems engineering delivers a 55% reduction of the total development cost. The most mature form of MBSE is model-based product line engineering (PLE). When compared to typical systems engineering endeavors, the application of model-based product-line engineering delivers a 41.6% reduction of the total development cost.” These […]

Dec 212015
Applying Systems Engineering to Regulatory Compliance Activities for Medical Devices

The INCOSE Biomedical-Healthcare Model-Based Systems Engineering (MBSE) Challenge Team has developed a reference model that uses SysML to represent a generic Medical Device infusion pump and a systems engineering process for planning, developing, and obtaining regulatory approval of a medical device. This presentation describes recent updates to the model that incorporates Buede’s textbook model for […]

Oct 152015
Real World Application of MBSE at Bombardier Transportation

MBSE is an integrated approach. To get the best solution, large organizations adopt MBSE toolchains in their modeling environment. This process involves choosing the right tools from different vendors, applying client work process, and ensuring their inter-operability in the right way. Today we‘re delighted to share how MBSE is applied to model complex systems of […]

Jul 152015
MBSE in Real-Life Space Exploration Projects

Systems engineering techniques have been used in spacecraft design, avionics, and engineering in general for over 60 years. At the moment, space exploration industries face new significant challenges: the largest optical and radio telescopes, missions to mars and exoplanets, reusable rockets, increase of small CubeSat satellites usage, service robots, and other. The constant increase in […]

Jul 082015
Model Lifecycle Management

Today  there  is  increasing  recognition  of  the  potential  MBSE brings to system life cycle processes with the increasing complexity of systems and the  demands  of  the  global  marketplace.  In  order  for  the  practice  to  realize  this potential,  system  modeling  and  MBSE  must  be  part  of the  larger  model  based engineering  effort,  and  integrate  with  other  […]

Jul 022015
Automated Requirements Verification

Systems Modeling Language (SysML) is used to capture systems design as descriptive and analytical system models, which relate text requirements to the design and provide a baseline to support analysis and verification.This session will demonstrate how model of the system, expressed with sufficient precision, can be used to support early requirements validation and design verification, […]