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SpaceX Falcon 9 rocket lifts off from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida at 11:50 p.m. EST on March 6, 2020, carrying the uncrewed cargo Dragon spacecraft on its journey to the International Space Station for NASA and SpaceXs 20th Commercial Resupply Services (CRS-20) mission.
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8th International Workshop on Assurance Cases for Software-intensive Systems
Toulouse, France
September 19, 2023
ASSURE 2023 is live


  • 2023-05-30: Notifications sent to authors
  • 2023-05-01: Submission deadline extended to May 15
  • 2023-04-20: The ASSURE 2023 website is live!

The 8th International Workshop on Assurance Cases for Software-intensive Systems (ASSURE 2023) is being collocated this year with SafeComp 2023, and aims to provide an international forum for high-quality contributions on the application of assurance case principles and techniques to provide confidence that the dependability properties of critical software-intensive systems have been met. ASSURE 2023 will be hybrid and run on Central European Time (CET).

The main goals of the workshop are to:

  • Explore techniques for the creation and assessment of assurance cases for software-intensive systems
  • Examine the role of assurance cases in the engineering lifecycle of critical systems
  • Identify the dimension of effective practice in the development and evaluation of assurance cases
  • Investigate the relationship between dependability techniques and assurance cases
  • Identify critical research challenges and define a roadmap for future development

We invite high-quality research, practice, tools, and position papers, as well as papers containing new, forward-looking ideas and emerging results, works-in-progress, and reflections on current research examined through new perspectives, calling for future research directions. See the full Call for Papers, for more details on topics. Also view the submission deadlines, and guidelines.

2023 ASSURE – SASSUR Joint Workshop Program

8:00 9:00

9:00 9:05
9:05 10:00
Welcome Keynote – Safety Cases: in Theory and Reality
Philippa Ryan Conmy

10:00 10:30
Coffee Break

10:30 11:00
Invited Talk – Driving the Development Process from the Safety Case
Christopher Hobbs, Simon Diemert, and Jeff Joyce

11:00 11:30
Computer-Aided Generation of Assurance Cases
T.E. Wang, C. Oh, M. Low, I. Amundson, Z. Daw, A. Pinto, M.L. Chiodo, G. Wang, S. Hasan, R. Melville, P. Nuzzo

11:30 12:00
RACK: A Semantic Model and Triplestore for Curation of Assurance Case Evidence
A. Moitra, P. Cuddihy, K. Siu, D. Archer, E. Mertens, D. Russell, K. Quick, V. Robert, B. Meng

12:00 13:00

13:00 13:30
Using Assurance Cases to Prevent Malicious Behaviour from Targeting Safety Vulnerabilities
V. Bandur, M. Lawford, S. Mosser, R. Paige, V. Pantelic, A. Wassyng

13:30 14:00
Constructing Security Cases Based on Formal Verification of Security Requirements in Alloy
M. Zeroual, B. Hamid, M. Adedjouma, J. Jaskolka

14:00 14:30
Assurance Cases for Timing Properties of Automotive TSN Networks
R. Kapinski, V. Pantelic, V. Bandur, A. Wassyng, M. Lawford

14:30 15:00
A Methodology for the Qualification of Operating Systems and Hypervisors for the deployment in IoT devices
I. Bicchierai, E. Schiavone, M.L. Itria, L. Falai, A. Bondavalli

15:00 15:30
Coffee Break

15:30 16:00
Toward Dependability Assurance Framework for Autonomous Systems
Y. Matsuno, T. Takai, M. Okada, T. Tsuchiya

16:00 16:45
Concluding Keynote – NASA’s Office of Safety and Mission Assurance (OSMA) Vision for an Objectives-Driven,
Risk-Informed, and Case-Assured Framework
A. Diventi


Important Dates

Paper submission:            15 May 2023  2 May 2023
Author notification:          25 May 2023
Camera-ready papers:    5 June 2023
Workshop:                          19 September 2023

Call for Papers

Software plays a key role in high-risk systems, e.g., safety and security-critical systems. Assurance cases have been recommended or mandated for software-intensive systems in a number of domains, and are a promising way forward for assurance of autonomous systems. The goals of the 2023 Workshop on Assurance Cases for Softwareintensive Systems (ASSURE 2023) are to: 

  • explore techniques for creating and assessing assurance cases for software-intensive systems, especially those enabling autonomy, including structured argumentation, graphical notations, narrative forms, etc.
  • examine the role of assurance cases in the engineering lifecycle of critical systems;
  • identify the dimensions of effective practice in the development and evaluation of assurance cases;
  • investigate the relationship between dependability techniques and assurance cases; and,
  • identify critical research directions, define a roadmap for future development, and formulate challenge problems.

The workshop will be hybrid, and run on Central European Time (CET).

We solicit high-quality contributions (research, practice, tools, and position papers) on the application of assurance case principles and techniques to assure that the dependability properties of critical software-intensive systems have been met. ASSURE 2023 additionally solicits papers that contain new, forward-looking, ideas with emerging results and concrete plans for comprehensive empirical validation, works-in-progress, as well as reflections that examine current research under a new lens, calling for future research directions. Papers should attempt to address the workshop goals in general. 

Topics of interest include, but are not limited to:

  • Assurance issues in emerging paradigms, e.g., autonomous and AI-based systems, including self-driving cars, unmanned aircraft systems, complex health care and decision making systems, etc.
  • Standards: Industry guidelines and standards are increasingly requiring the development of assurance cases, e.g., the automotive standard ISO 26262, the FDA guidance on the total product life cycle for infusion pumps and the OMG standard on argumentation (Structured Assurance Case Metamodel, SACM).
  • Certification and Regulations: The role and usage of assurance cases in the certification of critical systems, as well as to show compliance to regulations.
  • Empiricism Empirical assessment of the applicability of assurance cases in different domains and certification regimes.
  • Dependable architectures: How do fault-tolerant architectures and design measures such as diversity and partitioning relate to assurance cases?
  • Dependability analysis: What are the relationships between dependability analysis techniques and the assurance case paradigm?
  • Safety and security co-engineering: What are the impacts of security on safety, particularly safety cases and how can safety and security cases (e.g., as proposed in ISO 26262 and J3062 respectively) be reconciled?
  • Tools: Using the output from software engineering tools (testing, formal verification, code generators) as evidence in assurance cases / using tools for the modeling, analysis and management of assurance cases. More generally, the role of formal verification in the wider context of assurance.
  • Application of formal techniques for the creation, analysis, reuse, and modularization of arguments. Exploration of relevant techniques for assurance cases for real-time, concurrent, and distributed systems.
  • Assurance of software quality attributes, e.g., safety, security and maintainability as well as dependability in general, including tradeoffs, and exploring notions of the quality of assurance cases themselves.
  • Domain-specific assurance issues, in domains such as aerospace, automotive, healthcare, defense and power.
  • Reuse and Modularization: Contracts and patterns for improving the reuse of assurance case structures.
  • Relations between different formalisms and paradigms of assurance and argumentation, such as Goal Structuring Notation, STAMP, IBIS, and goal-oriented formalisms such as KAOS.


Submission Guidelines

Papers will be peer-reviewed by at least 3 program committee members, and accepted papers will be published in the SAFECOMP 2023 Workshop proceedings, to be published by Springer in the Lecture Notes in Computer Science (LNCS) series.  

  • All papers must be original work not published, or in submission, elsewhere. Submission will be via EasyChair.
  • Papers should be submitted in PDF only. Please verify that papers can be reliably printed and viewed on screen before submission.
  • Papers should conform to the LNCS paper formatting guidelines.
    • Regular (research, or practice), Tools, and Experience papers can be up to 10 pages, including figures, references, and any appendices. Note that authors of accepted tools papers will be expected to give a demonstration of the tool(s) at the workshop. Papers describing the experience of an organization in developing assurance cases are particularly welcome.
    • Position papers, and papers presenting new ideas, works-in-progress, and emerging results can be 6 pages, including figures, references, and any appendices.


Workshop Chairs

  • Ewen Denney, KBR / NASA Ames, USA
  • Ibrahim Habli, University of York, UK
  • Ganesh Pai, KBR / NASA Ames, USA

Program Committee

  • Chih-Hong Cheng, Fraunhofer IKS and TU Munchen, Germany
  • Alan Wassyng, McMaster University, Canada
  • Philippa Ryan Conmy, University of York, England
  • Irfan Sljivo, KBR/NASA Ames Research Center, USA
  • Martin Feather, JPL, USA
  • Yoshiki Kinoshita, Kanagawa University, Japan
  • Kenji Taguchi, National Institute of Informatics, Japan
  • Daniel Schneider, Fraunhofer, Germany
  • Simon Burton, Fraunhofer Institute for Cognitive Systems, Germany
  • Sean White, NHS, England

Contact Us

8th International Workshop on Assurance Cases for Software-intensive Systems
Toulouse, France
September 19, 2023

If you have questions about paper topics, submission and/or about ASSURE 2023 in general, please contact the Workshop Organizers.



Last Updated
Oct 03, 2023

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      The Low-Earth Orbit Flight Test of an Inflatable Decelerator, or LOFTID, launched Nov. 10, 2022, aboard a ULA (United Launch Alliance) Atlas V rocket and successfully demonstrated an inflatable heat shield. Also known as a Hypersonic Inflatable Aerodynamic Decelerator, or HIAD, aeroshell, this technology could allow larger spacecraft to safely descend through the atmospheres of celestial bodies like Mars, Venus, and even Saturn’s moon, Titan.
      The Low-Earth Orbit Flight Test of an Inflatable Decelerator, or LOFTID, spacecraft is pictured after its atmospheric re-entry test in November 2022.NASA/Greg Swanson “Large-diameter aeroshells allow us to deliver critical support hardware, and potentially even crew, to the surface of planets with atmospheres,” said Trudy Kortes, director of Technology Demonstrations at NASA Headquarters. “This capability is crucial for the nation’s ambition of expanding human and robotic exploration across our solar system.”
      NASA has been developing HIAD technologies for over a decade, including two smaller scale suborbital flight tests before LOFTID. In addition to this successful tech demo, NASA is investigating future applications, including partnering with commercial companies to develop technologies for small satellite reentry, aerocapture, and cislunar payloads.
      “This was a keystone event for us, and the short answer is: It was highly successful,” said LOFTID Project Manager Joe Del Corso. “Our assessment of LOFTID concluded with the promise of what this technology may do to empower the exploration of deep space.”
      Due to the success of the LOFTID tech demo, NASA announced under its Tipping Point program that it would partner with ULA to develop and deliver the “next size up,” a larger 12-meter HIAD aeroshell for recovering the company’s Vulcan engines from low Earth orbit for reuse.
      The LOFTID team recently held a post-flight analysis assessment of the flight test at NASA’s Langley Research Center. Their verdict?
      Upon recovery, the team discovered LOFTID appeared pristine, with minimal damage, meaning its performance was, as Del Corso puts it, “Just flawless.”
      View some interesting visual highlights from LOFTID’s flight test.
      LOFTID splashed down in the Pacific Ocean several hundred miles off the east coast of Hawaii and only about eight miles from the recovery ship’s bow – almost exactly as modeled. A crew got on a small boat and retrieved and hoisted LOFTID onto the recovery ship.
      “The LOFTID mission was important because it proved the cutting-edge HIAD design functioned successfully at an appropriate scale and in a relevant environment,” said Tawnya Laughinghouse, manager of the TDM (Technology Demonstrations Missions) program office at NASA’s Marshall Space Flight Center.
      Marshall supported the Langley-led LOFTID project, providing avionics flight hardware, including the data acquisition system, the inertial measurement unit, and six camera pods. Marshall engineers also performed thermal and fluids analyses and modeling in support of the LOFTID re-entry vehicle inflation system and aeroshell designs.
      The LOFTID demonstration was a public private-partnership with ULA funded by STMD and managed by the Technology Demonstration Mission Program, executed by NASA Langley with contributions from across NASA centers. Multiple U.S. small businesses contributed to the hardware. NASA’s Launch Services Program was responsible for NASA’s oversight of launch operations.
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    • By NASA
      7 min read
      Science on Station: November 2023
      Inspiring Students with Ham Radio, Other Educational Programs
      As an orbiting microgravity laboratory, the International Space Station hosts experiments from almost every scientific field. It also is home to educational programs to encourage young people worldwide to study science, technology, engineering, and mathematics (STEM). These programs aim to inspire the next generation of space scientists and explorers and experts who can solve problems facing people on Earth.
      The first and longest running educational outreach program on the space station is ISS Ham Radio. An organization known as Amateur Radio on the International Space Station, or ARISS, helps run the program. ARISS is a partnership between NASA, the American Radio Relay League, the Radio Amateur Satellite Corporation, amateur radio organizations, and multiple international space agencies. Students use amateur or ham radio to talk with astronauts, asking them questions about life in space, career opportunities, and other space-related topics. Three contacts with schools in Australia and Canada were scheduled during the month of November 2023.
      JAXA astronaut Koichi Wakata during a ham radio session.NASA Before a contact, students help set up a ground radio station and study radio waves, space technology, the space station, geography, and the space environment. Contact events have been held with schools from kindergarten through 12th grade, universities, scout groups, museums, libraries, and after school programs, and at national and international events. Approximately 15,000 to 100,000 students are involved directly each year and thousands more people in their communities witness these contacts directly or through the news media.
      Rita Wright, a teacher at Burbank School in Burbank, IL, one of the first to have a contact with the space station, reported on the extensive study and preparation by the students there.1 She noted that their contact was “an interdisciplinary learning experience for all grades across a variety of academic concentrations that included math, science, reading, writing and art…. The transformation that took place was quite revolutionary. We came closer together as a school.” Students talked extensively about the experiment and parents pitched in and helped because they sensed how special the event was and wanted to be a part of it.
      Wright adds that ripple effects continued long after the December 2000 contact with astronaut William Shepherd. Staff members were inspired to look for other interdisciplinary projects and many students talked about pursuing careers associated with the space industry.
      After a contact at Sonoran Sky Elementary School in Scottsdale, AZ, teacher Carrie Cunningham reported that the students started an after-school Amateur Radio Club and that, “sparked by the excitement of the ARISS contact, many students have shown an interested in pursuing their own Amateur Radio experience.”2
      “There is a sense of accomplishment that results from the school and the students setting up and conducting the ISS ham contact themselves,” Cunningham reported. “The students better understand how NASA and the other international space agencies conduct science in space. The unique, hands-on nature of the amateur radio contact provides the incentive to learn about orbital mechanics, space flight, and radio operations.”
      In a 2018 conference presentation, members of the ARISS staff noted that the program and its predecessors have jump-started countless careers, touched millions of people from all walks of life, and even become local and international phenomena. Participants have ranged from disadvantaged students to heads of states, and the program has been mentioned in IMAX films, numerous television shows, and commercials.3
      A group of educators from Australia recently looked at how ham radio affected student interest in STEM subjects. They found that the program has a significant and positive impact on students and that interest in all STEM areas increases as a direct result of contacts.4
      That research also reported a strong belief among teachers that astronauts provide outstanding examples of role models for their students. While the greatest changes in student interests occurs with primary school age students, the program also creates strong change in the interests of high school students.
      NASA astronaut Edward M. (Mike) Fincke uses the station’s ham radio set during Expedition 9. NASA Patricia Palazzolo was the coordinator for gifted education in the Upper St. Clair School District in Pennsylvania during a 2004 contact with NASA astronaut Mike Fincke. She wrote a report about the event, noting that the positive impact of the program goes far beyond the numbers. “All of my students who have participated … have gone on to phenomenal accomplishments and careers that contribute much to society. Almost all have opted for careers in science, technology, or science-related fields.”
      Ham radio experiences help students make real-world connections among disciplines, teach problem-solving under the pressure of deadlines, hone communication skills, and illustrate the importance of technology.5 For the adults involved, contacts highlight the significance of sharing skills with others and provide an opportunity to model the power of passion, partnership, and persistence.
      AstroPi is an educational program from ESA (European Space Agency) where primary and secondary school students design experiments and write computer code for one of two Raspberry Pi computers on the space station. The computers are equipped with sensors to measure the environment inside the spacecraft, detect how the station moves through space, and pick up the Earth’s magnetic field. One of them has an infrared camera and the other a standard visible-spectrum camera. 
      One student project used the visible camera to observe small-scale gravity waves in different regions in the northern hemisphere.6 Atmospheric gravity waves transport energy and momentum to the upper layers of the atmosphere. These phenomena can be detected by visual patterns such as meteor trails, airglow, and clouds.
      ESA astronaut Samantha Cristoforetti poses with the AstroPi equipped with a visual camera.NASA YouTube Space Lab was a world-wide contest for students ages 14 to 18 to design an experiment about physics or biology using video. Two proposals were selected from 2,000 entries received from around the world. One of those documented the ability of the Phidippus jumping spider to walk on surfaces and make short, direct jumps to capture small flies in microgravity.7
      Other space station facilities that host student-designed projects include CubeSat small satellites, TangoLab, the Nanoracks platform, and Space Studio Kibo, a JAXA (Japan Aerospace Exploration Agency) broadcasting studio.
      NASA is committed to engaging, inspiring, and attracting future explorers and building a diverse future STEM workforce through a broad set of programs and opportunities. The space station is an important part of that commitment.
      John Love, ISS Research Planning Integration Scientist
      Expedition 70

      Search this database of scientific experiments to learn more about those mentioned above. Space Station Research Explorer.

      Wright RL. Remember, We’re Pioneers! The First School Contact with the International Space Station. AMSAT-NA Space Symposium. Arlington, VA. 2004 9pp. Cunningham C. NA1SS, NA1SS, This is KA7SKY Calling…… AMSAT-NA Space Symposium, Arlington, VA. 2004 Bauer F, Taylor D, White R. Educational Outreach and International Collaboration Through ARISS: Amateur Radio on the International Space Station. 2018 SpaceOps Conference, Marseille, France. 2018 28 May – 1 June; 14 pp. DOI: 10.2514/6.2018-2437. Diggens, M., Williams, J., Benedix, G. (2023). No Roadblocks in Low Earth Orbit: The Motivational Role of the Amateur Radio on the International Space Station (ARISS) School Program in STEM Education. Space Education & Strategic Applications. https://doi.org/10.18278/001c.89715 Palazzolo P. Launching Dreams: The Long-term Impact of SAREX and ARISS on Student Achievement. AMSAT-NA Space Symposium, Pittsburgh, PA. 2007 18pp. Magalhaes TE, Silva DE, Silva CE, Dinis AA, Magalhaes JP, Ribeiro TM. Observation of atmospheric gravity waves using a Raspberry Pi camera module on board the International Space Station. Acta Astronautica. 2021 May 1; 182416-423. DOI: 10.1016/j.actaastro.2021.02.022 Hill DE. Jumping spiders in outer space (Araneae: Salticidae). PECKHAMIA. 2016 September 17; 146(1): 7 pp. Facebook logo @ISS @Space_Station@ISS_Research Instagram logo @ISS Linkedin logo @NASA Keep Exploring Discover Related Topics
      Latest News from Space Station Research
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    • By NASA
      Connect your sci-fi fandom and learn about how NASA explores the unknown in space for all humanity! Join experts and engagement team members from NASA’s Ames Research Center in California’s Silicon Valley at FAN EXPO San Francisco 2023. Visit the exhibit, panels, and more to hear about NASA’s plans for human exploration at the Moon and missions to Mars from NASA roboticists, engineers, and educators. 
      The FAN EXPO San Francisco convention will be held Nov. 24-26, 2023, at Moscone Center West in San Francisco. 
      NASA Booth 
      The NASA booth can be found by the main entrance of the convention show floor, at booth #607. Stop by to talk to our experts, learn about upcoming missions, and much more! Event attendees will also have a chance to take a photo with a full-size model of VIPER, NASA’s first robotic Moon rover. Shared posts on X, Facebook, and Instagram using the tag #MoonRoverAndMe may appear on NASA social media accounts during or after the event! 
      NASA Panel Schedule 

      Bots Before Boots: VIPER – NASA’s First Robotic Moon Rover Mission 
      1:45 p.m. PST Saturday, Nov. 24 
      Theater #5 (Room 2006)   
      Launching in late 2024, VIPER will explore ancient craters at the lunar South Pole to unravel the mysteries of the Moon’s water and inform future human exploration of the Moon as part of NASA’s Artemis missions.  
      Loretta Falcone, Lead Mission Planner  Terry Fong, Director of the Intelligence Robotics Group  Ryan Vaughan, Systems Engineer  Moderator: Cara Dodge, Public Engagement Lead 

      Boots on the Moon! NASA’s Next Step in Human Exploration 
      2:45 p.m. PST Saturday, Nov. 24 
      Theater #5 (Room 2006)   
      With the Artemis missions, NASA will land the first woman and first person of color on the Moon for scientific discovery, economic benefits, and inspiration for a new generation of explorers.  
      Parul Agrawal, Ames Lead for Orion Spacecraft Operations     Lara Lash, Aerospace Engineer     Seth Schisler, Technology Manager   Moderator: Arezu Sarvestani, Public Affairs Specialist 
      For News Media 
      Members of the news media interested in covering this topic should reach out to the NASA Ames newsroom. 
      View the full article
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