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  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>RE4SuSy: 4th International Workshop on Requirements Engineering for Sustainable Systems, Part of the GREENS Alliance</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Birgit Penzenstadler</string-name>
          <email>birgit.penzenstadler@csulb.edu</email>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Martin Mahaux</string-name>
          <email>martin.mahaux@fundp.ac.be</email>
          <xref ref-type="aff" rid="aff3">3</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Camille Salinesi</string-name>
          <email>camille@univ-paris1.fr</email>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Ruzanna Chitchyan</string-name>
          <email>rc256@leicester.ac.uk</email>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>California State University Long Beach</institution>
          ,
          <addr-line>Long Beach</addr-line>
          ,
          <country country="US">USA</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Universite ́ Paris 1 - Sorbonne</institution>
          ,
          <addr-line>Paris</addr-line>
          ,
          <country country="FR">France</country>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution>University of Leicester</institution>
          ,
          <addr-line>Leicester</addr-line>
          ,
          <country country="UK">UK</country>
        </aff>
        <aff id="aff3">
          <label>3</label>
          <institution>University of Namur</institution>
          ,
          <addr-line>Namur</addr-line>
          ,
          <country country="BE">Belgium</country>
        </aff>
      </contrib-group>
      <abstract>
        <p>-Supporting sustainability has recently become a much discussed research topic and the RE4SuSy workshop series has established a strong and growing research community around the different aspects of sustainability. Software is increasingly the driver for change in business and social spheres of life: it changes life styles and business practices. Since requirements define how and what the software will do, we maintain that requirements engineering is the key point in software engineering through which sustainability can be fostered. The International Workshops on Requirements Engineering for Sustainable Systems (RE4SuSy) is concerned with research on techniques, tools, and processes for sustainability through requirements engineering. RE4SuSy is an interactive workshop: the contributors and prospective participants will engage well before the workshop date through on-line collaborative writing, discussion, and peer feedback. The workshop aims to foster community growth by supporting new collaborations, holding preliminary case studies, discussions, and continuous birds-of-a-feather group work.</p>
      </abstract>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>I. MOTIVATION AND OBJECTIVES</title>
      <p>Software is a main driver for change in business and
society, in changing life styles as well as business practices.
Since requirements are the starting point for defining software,
requirements engineering is the key point in software
engineering through which sustainability can be fostered. Presently,
researchers are exploring the concept of “sustainability
requirements”, and how to support the elicitation,
documentation, and conflict resolution of such requirements. It has been
shown that requirements engineering has indeed an important
role to play to ensure that future socio-technical systems are
sustainable. For example, requirements can impact on the style
and quality of services to be delivered, along with the hardware
needed to deliver them; the scale and pattern of software
and systems electricity consumption; the potential premature
obsolescence of hardware, etc. Further, as ubiquitous
sociotechnical systems alter the way we live, the requirements of
those systems have to be carefully written such that those new
ways of living are more sustainable.</p>
      <p>In industry, companies not only want to be ”ecologically
trendy”, but also become aware that sustainability
requirements have strategic impacts on business organization and
value creation, as with zero paper projects that revolutionize
enterprise architectures, or intelligent power grids that lead to
delivering innovative services.</p>
      <p>This workshop aims to provide an interactive stage for
researchers and practitioners to share and exchange their latest
work, to collaboratively work on expanding the body of
knowledge in RE for sustainable systems, and to jumpstart
new collaborations through the live creation of teams that
commit to work together on concrete topics and in-workshop
case studies and experiments.</p>
      <p>The objective of the workshop is to establish a community
of researchers and practitioners interested in collaborating
on the topic of sustainability in requirements engineering.
This community will expand and build on the work already
initiated in the past editions of this workshop, such as the
research agendas identified in the past workshops, research
collaborations started in the past three years, and work on
the Karlskrona Manifesto on Sustainability Design initiated
in 2014. This objective shall be supported in the workshop
through the following actions:</p>
      <p>Provision of a platform for researchers and practitioners
to present their current work and trigger discussion;
Continued collaboration on the previously initiated topics
(e.g., Karlskrona Manifesto on Sustainability Design);
Support for group work and discussion on newly favored
topics;
Kickstart new collaborations between the workshop
participants
Dissemination of the workshop ideas and results at the
main conference.</p>
    </sec>
    <sec id="sec-2">
      <title>II. HISTORY OF THE WORKSHOP</title>
      <p>
        This is the only workshop that focuses on the topics of
sustainability in and through RE. It has been held in 3 previous
instances: The 1st Intl. Workshop on RE4SuSy1 was held at
the International Working Conference REFSQ in March 2012.
It had 8 contributions that were presented at the workshop and
14 attendees. The 2nd Intl. Workshop on RE4SuSy2 was held
at the International Conference on Requirements Engineering
in July 2013, with 7 contributions and 17 attendees. The 3rd
Intl. Workshop on RE4SuSy3 was held at the International
Conference on Requirements Engineering in August 2014,
with 8 contributions and 14 attendees [
        <xref ref-type="bibr" rid="ref5">5</xref>
        ]. The afternoon was
dedicated to working on the Karlskrona Manifesto for
Sustainability Design, which continued to be developed throughout
the conference and was presented on the last day to the plenary.
The working group established for this continues to collaborate
actively on this topic.
      </p>
      <p>Related workshops on sustainability, green software, and
software engineering are GREENS4 (at ICSE’12, ’13, and
’14), WSRCC5 (at OOPSLA’09, ICSE’10, CAISE’11), and
GIBSE6 (AOSD’13), but none of them explicitly considers
requirements engineering.</p>
      <p>As of 2015, RE4SuSy is part of the newly formed GREENS
alliance that brings together all these workshops around
sustainability in software engineering (each focused on different
areas of Software Engineering) .</p>
      <p>III. WORKSHOP CONTRIBUTIONS AND EVALUATION</p>
      <sec id="sec-2-1">
        <title>A. Contribution types</title>
        <p>The workshop solicits a number of contribution types:
full papers of 10 pages,
short papers of 6 pages,
posters with a 2-page abstract,
videos of up to 5 minutes (also with 2 pages abstract),
user studies/experiments for the duration of an hour with
a maximum description of 6 pages,
open collaboration papers (long or short) (new
submission format). Here the author(s) can solicit for open
collaboration on a paper. The solicitation starts at least
two months before submission deadline, via a form on the
RE4SuSy webpage. The paper will be hosted and written
via a collaborative edition platform (framapad, overleaf,
pirate pad, etc.), see also pre-workshop activities.</p>
        <p>We encourage the submission of new and interactive
formats, which can be presented as such at the workshop, and
published in the workshop proceedings with textual
descriptions.</p>
        <p>1https://sustainability.wiki.tum.de/RE4SuSy
2http://www4.in.tum.de/ penzenst/re4susy/2013/
3http://www.ics.uci.edu/ bpenzens/2014re4susy/
4http://greens.cs.vu.nl/
5http://www.cs.toronto.edu/wsrcc/Previous.html
6http://trese.ewi.utwente.nl/workshops/GIBSE/</p>
      </sec>
      <sec id="sec-2-2">
        <title>B. Evaluation process</title>
        <p>The submission, review process, and communication will be
performed via the Easychair system. The contribution ratings
will include the option of a conditional accept as we consider
it more sustainable to request specific improvements instead
of rejections of potentially good contributions. In case one or
more of the organizers decide to submit a contribution, the
reviews will be handled in an adequate way to preserve blind
review rules.</p>
      </sec>
      <sec id="sec-2-3">
        <title>C. Program committee</title>
        <p>The program committee we plan to invite is a mix of
representatives from different domains of requirements engineering
and sustainability.</p>
        <p>Davor Svetinovic, Masdar Institute of Science and
Technology, United Arab Emirates
Let´ıcia Duboc, State Univ. of Rio de Janeiro, Brasil
Jean-Christophe Deprez, CETIC, France
Patricia Lago, VU University Amsterdam, Netherlands
Steve Easterbrook, University of Toronto, Canada
Eric Dubois, PRC Henri Tudor, Luxembourg
Timo Johann, University of Hamburg, Germany
Coral Calero, Universidad Castilla La Mancha, Spain
Norbert Seyff, university of Zu¨rich, Switzerland
Sedef Akinli, Ryerson University, Canada
Christoph Becker, University of Toronto, Canada
Colin Venters, University of Leeds, UK
Stefanie Betz, Karlsruhe Institute of Technology,
Germany
Ana Moreira, New University of Lisbon, Portugal
Effie Law, University of Leicester, UK</p>
      </sec>
    </sec>
    <sec id="sec-3">
      <title>IV. WORKSHOP FORMAT AND NEEDED SERVICES</title>
      <sec id="sec-3-1">
        <title>A. Pre-workshop activities</title>
        <p>There are three phases of pre-workshop activities:
1) Open collaboration: We solicit open collaboration papers
that start at least two months before the deadline on an
open collaboration platform. Authors are encouraged to
advertise this on the workshop website.
2) Shepherding: Four weeks before the submission
deadline, authors are invited to upload the preliminary
abstracts, outlines, or papers for a constructive feedback
phase. Other authors and interested PC members can
comment on them so the authors can improve their
papers before the actual submission.
3) Reading: In a pre-workshop reading phase from the CR
deadline until the workshop, we provide the
cameraready version papers in a protected download area for
authors and PC members. That way participants are
already engaging with the contents before the actual
workshop and discussion is facilitated.</p>
        <p>B. Workshop format</p>
        <p>1) Warm-up and intro: Before the workshop each attendee
will be asked to submit a single slide that summarises their
research interest and work related to the workshop. A copy of
this slide-set will be share with all attendees. The workshop
will be kicked off with an interactive warm-up exercise where
the participants are introduce themselves and their slide. This
is aimed at facilitating introductions, clarifying the positions,
and identifying discussion topics and collaboration
opportunities.</p>
        <p>2) Keynote: The workshop will have an interactive keynote
speech by Prof. Steve Easterbrook.</p>
        <p>3) Contribution presentations: A selected subset of
accepted papers will be presented to provide further input into
the subsequent discussion sessions. All accepted papers will
be available in advance of the workshop as password-secured
download. In parallel, we will be taking notes in a shared
online document as a living protocol of the workshop. Authors
of accepted papers will be encouraged to prepare a poster.
These will be displayed in the workshop room on the walls
to enable further discussions and collaboration during breaks,
lunchtime, or after the workshop.</p>
        <p>4) Manifesto: Continuation of the work on the Karlskrona
Manifesto on Sustainability Design will be one of the
discussion topic options for group discussion.</p>
        <p>5) Concepts, Collaboration, and Studies: Topics for work
in breakout sessions with discussion facilitation (e.g. creativity
techniques like the Osborne checklist, roleplay, etc.) will be
collected from accepted papers during the review stage as
well as during the workshop itself. The afternoon will be
dedicated to group work, with each group focusing on one or
two selected topic. The breakout sessions will be also used
to facilitate new collaborations amongst attendees. Specific
attention will be given to study design to evaluate concepts
early on.</p>
        <p>6) Experiments: Furthermore, we will provide authors with
the option to perform small experiments with their research
work if applicable, i.e., they may try out a specific technique
that they presented in the morning with willing participants of
the audience. For example, if an author presents a goal
modeling technique specifically designed to model sustainability
goals, an experiment could be modeling a small case study
within half an hour among a group of 5 workshop attendees.</p>
        <p>7) Final Wrap-up: In a final come together, we will gather
and share the major discussion points of the day and group
work results all workshop.</p>
        <p>a) Results: The workshop results will include:
A workshop report, formatted as an online protocol of
the workshop;
Updated research agenda and challenges;
New research collaborations initiated through discussion
groups and collaborative writing;
Experiments / user studies and study designs carried out
at the workshop. The results of these will be shared with
the participants and the workshops as a whole.</p>
        <p>A wrap-up of results to be presented at the main
conference
An emerging community of actively collaborating
researchers</p>
      </sec>
      <sec id="sec-3-2">
        <title>C. Post-workshop activities</title>
        <p>The post-workshop activities will be focused around
intensifying collaborations that originated during the workshop,
having informal working sessions both in person and
online. The workshop results will also be shared with the main
conference. Results of the workshop will be shared via the
online protocol for all interested parties.</p>
      </sec>
      <sec id="sec-3-3">
        <title>D. Needed Services</title>
        <p>Room with 20 chairs and tables for them as well as a
projector. The preferred setting is a U-shape. The room
shall provide enough space so we can move around along
the walls during interactive sessions.</p>
        <p>Free walls for the posters of the workshop.</p>
        <p>More free walls where we are allowed to (temporarily)
stick many post-its and pieces of papers to collect and
organise ideas.</p>
        <p>Harmonized feedback forms would be welcome.</p>
      </sec>
    </sec>
    <sec id="sec-4">
      <title>V. WORKSHOP PUBLICATION PLANS</title>
      <p>We will publish workshop proceedings with the free and
public CEUR WS proceedings.</p>
      <p>The organising team will write a workshop report and make
it available in an adequate publication. The workshop report
will be based on the protocol elaborated collectively online
during the day and participants are welcome to co-author.</p>
    </sec>
    <sec id="sec-5">
      <title>VI. TARGET AUDIENCE</title>
      <p>The workshop is aimed to researchers and practitioners
working on/with requirements engineering or broader software
and systems engineering topics and with interest in
sustainability. As this is a particularly interdisciplinary topic, we also
hope to encourage interdisciplinary contributions.</p>
    </sec>
    <sec id="sec-6">
      <title>VII. WORKSHOP DURATION</title>
    </sec>
    <sec id="sec-7">
      <title>Re4SuSy 2014 is planned for one full day.</title>
    </sec>
    <sec id="sec-8">
      <title>VIII. SHORT BIOGRAPHY OF ORGANIZERS</title>
      <p>
        1) Birgit Penzenstadler: Birgit Penzenstadler is Assistant
Professor at the California State University Long Beach. She
did her PhD in the area of requirements engineering [
        <xref ref-type="bibr" rid="ref3">3</xref>
        ]
at Technische Universita¨t Mu¨nchen (TUM), where she also
lead research projects with BMW, Daimler, Siemens, Bosch,
Lufthansa, and others. She has organized and moderated events
of over 100 participants from different domains at TUM.
After two years as postdoctoral fellow at TUM, she spent two
years as postdoctoral researcher on a DFG fellowship at the
University of California, Irvine, to deepen her knowledge in
the area of sustainability.
      </p>
      <p>
        Dr Penzenstadler has been investigating on sustainability from
a point of view of software engineering during the past four
years, working on a body of knowledge with two SLRs and
concepts of how to support sustainability from within RE [
        <xref ref-type="bibr" rid="ref6">6</xref>
        ],
[
        <xref ref-type="bibr" rid="ref7">7</xref>
        ], [
        <xref ref-type="bibr" rid="ref10">10</xref>
        ], [
        <xref ref-type="bibr" rid="ref8">8</xref>
        ]. She also included the topic into the curriculum of
her department [
        <xref ref-type="bibr" rid="ref4">4</xref>
        ] and has established industrial cooperations
for case studies [
        <xref ref-type="bibr" rid="ref1">1</xref>
        ]. She held a seminar series on the topic
with seminars at TUM [
        <xref ref-type="bibr" rid="ref9">9</xref>
        ] and the Universitat Polyte`cnica de
Catalunya (UPC) in Barcelona.
      </p>
      <p>
        2) Martin Mahaux: Martin Mahaux is currently a PhD
student and researcher at the University of Namur (FUNDP).
He published at REFSQ’11 one of the first studies on
sustainability and RE [
        <xref ref-type="bibr" rid="ref2">2</xref>
        ]. Having graduated as a Computer
Science Engineer from the University of Louvain (UCL),
Martin started his career as an IT consultant. During five
years, he enjoyed many positions in the software development
life cycle, in particular Requirements Engineering. During that
period he developed a training technique for teaching soft
skills to RE teams that is based on improvisational theater.
This has inspired him to return to the university to start a
PhD on the topic of collaboration and creativity in RE. His
interest in sustainability led him to explore the links between
collaboration, creativity and sustainability, leading to several
publications, in particular at RE4SuSy. His industry experience
and the emphasis on collaboration and creativity provide a
solid background for animating workshops.
      </p>
      <p>3) Camille Salinesi: Camille Salinesi is Professor at
Universite´ Paris 1 where he is the head of the Centre de Recherche
en Informatique, specialized in Information Systems
Engineering. He published over a hundred refereed papers in
international conferences and scientific journals on various
topics such as requirements engineering, strategic alignment,
or product lines.</p>
      <p>Dr Salinesi was involved in fundamental research projects
(FP4 NATURE, FP5 CREWS) and was the leader for
collaborations and consultancy works for various companies such
as France Telecom, SNCF, Renault, MediaScience, and EDF).
Nowadays, he is in particular working with Renault for the
specification of the new product line of electrical and hybrid
vehicles, dealing with a number of issues such as business
alignment between sustainability goals and the product line,
and taking into account the sustainability requirements in the
design of individual vehicles.</p>
      <p>Dr Salinesi was involved in the animation of research through
the organisation of a number of international research events.
Prof Salinesi belongs to the Program Board of the CAiSE
and to the PC of IEEE RE. Prof Salinesi was Organisation
Chair at RE’05, Program Chair of REFSQ’01, ’02, ’03 and ’14
and of CAiSE’13, General Chair of REP’99 and REP’00; he
belonged to the program board of CAiSE, and to the Program
Committee of RE, and several other events. He has also been
guest editor of the Requirements Engineering Journal and of
the Information and Software Technology Journal and was
referee in several other journals such as Telecommunication
Systems or IEEE Software.</p>
      <p>4) Ruzanna Chitchyan: Dr. Ruzanna Chitchyan is a
lecturer in Software Engineering at the University of Leicester,
UK. Her current researched is mainly focused on topics of
software engineering for sustainability and advanced software
modularization techniques (such as product-line based and
aspect-oriented development). Dr. Chitchyan has worked on
a number of EU and UK projects(such EPSRC projects on
Informaing Energy Choices through Ubiquitous Computing
and ”All-in-One” project on future sustainaible infrasturctures,
EU FP7 DiVA project on dynamic product lines, EU FP6
AOSD-Europe and AMPLE projects on apspects and product
lines). She has a particular interest in effects of sustainability
requirements on software design. Dr. Chitchyan has a
substantial conference and workshop organization. She has served,
for instance, as the organizing co-chair of ECOOP 2011, and
(lead) (co-) organizer on a number of workshops on
aspectoriented development (e.g., at AOSD, ICSE, RE, ECOOP
conferences) as well as workshops on Software Challenges
and Climate Change (ECOOP 2011 and ICSE 2010).</p>
    </sec>
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