*Scope and Motivation*
This year, the Workshop on Requirements Engineering (WER 2011) will be a special track of XIV Iberoamerican Conference on "Software Engineering" -- CIbSE 2011 .

WER'11 is the fourthteen edition of the Workshop on Requirements Engineering series. The workshop started as a meeting of the Ibero-American requirements engineering community, and by now it attracts researchers from all continents who participate with very high quality unpublished papers that describe novel research and/or industrial experiences in the field of Requirements Engineering.

In 2011 WER will be held in Rio de Janeiro, Brazil and will be organized by the Pontifícia Universidade Católica do Rio de Janeiro (PUC-Río), Campus Gávea, under the direction of Prof. Julio Leite.

WER welcomes contributions in Portuguese, Spanish or English, at international level, thereby allowing a bigger interaction between researchers of different Iberoamerican countries.

*Workshop Topics*
WER 2011 invites submissions of high quality unpublished papers describing novel research and/or industrial experiences in the field of Requirements Engineering. Topics of interest include, but are not restricted to:

# Requirements elicitation, analysis, and documentation

# Requirements validation, and visualization

# Requirements specification languages, methods, processes, and tools

# Requirements management, traceability, and allocation

# Requirements prioritization, and negotiation

# Modeling of requirements, goals, and domains

# Viewpoints in requirements

# Non-functional requirements

# Requirements engineering and software architecture

# Aspect-oriented requirements engineering

# Requirements for COTS-based systems

# Requirements for Web-based systems and mobile websites

# Requirements engineering for self adaptive systems

# Requirements for the agent-oriented paradigm

# Requirements for product lines

# Requirements engineering case studies and experiences

# Social, cultural, and cognitive factors in requirements engineering

# Aligning requirements to business goals and processes

# Requirements engineering education and training

*Submissions and Publication*
We invite contributions in the form of papers and tutorial related to WER's workshop. Papers may be in English, Portuguese or Spanish but English is preferred. During the event, participants must present their work in English. Papers must not exceed 12 pages including figures, author's information, abstract, and bibliography in Springer-Verlag's LNCS format (http://www.springer.de/comp/lncs/ authors.html).

Papers will be published by the organization in a book with ISBN number. Additionally, papers will be indexed by DBLP and made available in WER series repository http://wer.inf.puc-rio.br/WERpapers/. Submissions should be sent via the EasyChair submission system (http://www.easychair.org/conferences/?conf=wer2011). They will be reviewed according to their relevance, originality, technical quality, and adequacy to the conference topics.