Sustainability in engineering programs in a Portuguese Public University

Rethink the interventions, human practices and their effects on the natural environment, for the preservation of life and biodiversity, threatened by the capitalist model of production, consumption and disposal, becomes each day more indispensable. The role of universities as knowledge building space is fundamental for the insertion of the environmental approach (greening) in its various fronts (education, research, extension, and management). Following the line of several types of researches about the subject, this paper aims to identify if and how the issue of sustainability (e.g. through Project-Based Learning use) is taught in the various engineering programs of a Portuguese Public University. This study was carried out by a documental research based on the programs ́ curricula published in the official website of the university. The engineering programs selected included integrated master, master (second cycle) and doctorate (third cycle). In this study, it was identified programs that are more focused on sustainability concepts than others, so the programs were classified in three categories: strongest, medium and weakest focus.


Introduction
Sustainability is on the agenda, being one of the keywords in the spotlight.As a curiosity, a google search with this keyword produced 164,000,000 results in just 0.48 seconds, at the time of this paper writing.Teaching and engaging students in this issue are of prime importance as noticed by United Nations: "Education for all has always been an integral part of the sustainable development agenda" (United Nations, 2016a).This same organization launched a decade dedicated to Education for Sustainable Development (DESD) that was the decade of 2005-2014(United Nations Educational, Scientific and Cultural Organization, 2005).This aimed the integration of the principles and practices of sustainable development into all aspects of education and learning, the encouragement to changes in knowledge, values, and attitudes with the vision of enabling a more sustainable and just society for all.The collaboration of a vast number of stakeholders -across the Member States, UN agencies, the education sector, the private sector and civil society -was demanded to work in partnership to reorient education systems towards sustainable development.The report "Shaping the future we want" wrap-up the conclusions of DESD (United Nations Educational, Scientific and Cultural Organization, 2014).
As a follow-up of DESD, UNESCO launched the Global Action Program (GAP) on ESD.The overall goal of the GAP is to generate and scale up actions in all levels and areas of education and learning to accelerate progress towards sustainable development.The GAP is twofold: to reorient and to strength education in all agendas, programs and activities that promote sustainable development in order to everyone (educators, youth and local communities) to have the opportunity to acquire the knowledge, skills, values and attitudes that empower them to contribute to sustainable development and make a difference (United Nations, 2013).
In the context of GAP, a new initiative was created by the time of United Nations Conference on Sustainable Development, Rio+20.This initiative was called Higher Education Sustainability Initiative (HESI).It aims to stimulate commitments from Higher Education Institutions (HEI) to teach and encourage research on sustainable development, greening campuses and support local sustainability efforts.Almost 300 universities worldwide, joined the HESI, being compromised to: 1) Teach sustainable development across all disciplines of study, 2) Encourage research and dissemination of sustainable development knowledge, 3) Green campuses and support local sustainability efforts, and 4) Engage and share information with international networks (United Nations, 2016b).
More HEI must join this effort and a good beginning could be starting by diagnose the programs existent in the HEI by, for example, developing benchmarking studies (Allen et al., 2008) or reports (Hansen et al., 2014a;Ruscheinsky et al., 2014) that clarifies the situation and provides good examples for others to follow (Hansen et al., 2014b).This gave the motte for this paper that it has as the main goal to identify in a Portuguese Public university engineering programs and courses the issue of sustainability.This research extends the study of Colombo & Alves (2016) by including the Master degrees (second cycle) and Doctoral programs (third cycle).
To develop this study, the papers ´authors used the existent information (curricula) provided on the university official website by identifying the word sustainability or related (e.g.environment, green,…) in the programs and courses.The categories used in the first study (Strongest and Weakest) were also extended to include a Medium category in the Masters and Doctorates.These were slightly different in their organization because they add more optional courses that students are not compelled to have.Results are very disappointing because just a small percentage of programs and courses includes sustainability issues.Particular attention was also given to the learning methodology used in the course to discern the "how" sustainability is taught.
This paper is organized in the five sections.This first section introduces the theme relevance and the objectives of the paper.The second section introduces a brief literature review.The research methodology used is introduced in the third section.Section four introduces the study context and present the core of the paper exposing the degrees, programs and courses that were identified by having contents sustainability issues.The last section presents some final remarks.

Brief literature review
The need to integrate sustainability in education was largely recommended during the decade of Education for Sustainable Development (DESD) (United Nations Educational, Scientific and Cultural Organization, 2005).Recognizing the importance to continue this effort, the same organization launched the Global Action Program (GAP), already referred (United Nations, 2013).In the last report from DESD (United Nations Educational, Scientific and Cultural Organization, 2014) the need to mentor and evaluate the efforts that seek to reorient education systems was identified.In the same report, this was considered one of the most persistent challenges still to be addressed.Some studies and publications have been published with this concern (Allen et al., 2008;Bernaldo et al., 2016;Cotton et al., 2009;Hansen et al., 2014a;Wigmore & Ruiz, 2010).
Other actions suggested on UNESCO (United Nations Educational, Scientific and Cultural Organization, 2014) report are related to: 1) Expand and promote a leadership development for senior university executives and governors (including coaching, peer learning, action learning and mentoring support; 2) Endeavor new approaches to curriculum reform (including capacity-building for academic staff); 3) Move sustainable development beyond a specialist 'career' focus to a learning outcome and lifelong orientation across all fields of study; 4) Track systematically sustainability-related research, noting in particular whether and how it is influencing change in policy and practice beyond the institutions; 5) Strength greening campus operations through mechanisms to share tools and approaches, including carbon footprint reductions; and, finally, 6) Scale up collaboration and partnerships between university researchers and community stakeholders as mechanisms to deepen learning, strengthen the knowledge base on local social, environmental and economic issues and contribute to solutions for local-level sustainability.
Before promoting these actions, many challenges must be overcome, also referred in UNESCO (United Nations Educational, Scientific and Cultural Organization, 2014) as: 1) translation of commitments into implementation requires coordinated change at multiple levels -in governance, planning, academic programs, facility management and financial systems; 2) deeper innovation in staff development and across institutions is necessary to transform curricula and pedagogy and 3) disciplinary boundaries continue to be barriers to the exploration of complex issues, and to the preparation of learners with the capacity to address complexity.
These challenges are, many times, difficult to overcome.This has been testified by the authors of this paper in their experience with Project-Based Learning (PBL) implementation in developing projects akin to whole-systems sustainability solutions (product and production system design, green and eco-efficiency solutions of the supply chain (Alves et al., 2016).Fortunately, as in this example illustrated in this publication, there are many HEI worldwide that are promoting (or are trying to promote) good examples of programs and initiatives to greening the campus of universities and educate for sustainable development, namely: (Daneikina et al., 2016;Hansen et al., 2014b;Holgaard et al., 2016;Holmberg et al., 2008;Junyent & Ciurana, 2008;Mello et al., 2016;Sammalisto & Lindhqvist, 2008).
A key sustainability player on the DESD are the students.These should be engaged to be pro-active and push the shift of a new thinking and practice in HEI.Students should not be any more spectators but sustainability key actors and change agents in the HEI.But how to involve them if learning methodologies and contents in the programs remain unchanged?The easier integration way to integrate sustainability is introducing a course or more about this issue and this could result better when more courses are integrated however this is not the most efficient way.According to some studies and proposals by DESD, the sustainability issue is an interdisciplinary theme and to be effectively learned by the students should be worked in a much more involved way, i.e., must be worked in a transversal way in activities that involved diversified courses or knowledge learned in them.
PBL has been revealed to be an efficient methodology to work sustainability in engineering programs, being a model already implemented in various universities, namely Aalborg University, Denmark (Guerra et al., 2013;Dahms et al., 2013;Hansen et al., 2014a) and in the university of this study (Colombo et al., 2014;Colombo et al., 2015a).According UNESCO (United Nations Educational, Scientific and Cultural Organization, 2014) report, a significant driver for changes in curriculum and teaching practice is the increase of student demand for a sustainability centered education that should be monitored more closely and PBL could allow this.

Research methodology
The research methodology used was a documental research, mainly, based on the information available on the official website of the studied university.The research questions that guided this study were: 1. What are the engineering programs that includes sustainability concepts in the curricula?2. In the programs identified, how many and what courses includes sustainability concepts?3. How are the sustainability concepts taught to the students (i.e. the teaching/learning methodologies and methods used)?
In order to compile the data collected from the websites and answer the research questions, an excel file was built to register the Integrated Master degrees, Master and Doctoral programs.Integrated Master is the designation adopted by many Portuguese universities for some programs after Bologna Process (European Association of Institutions in Higher Education, 1999; European Commission & Education, Audiovisual and Culture Executive Agency, 2010).An Integrated Master, normally, includes five years of study (three that corresponds to a first cycle and two more years that corresponds to the second cycle of studies) in a total of 10 semesters.Each program has, normally, 300 European Credits Transfer System (ECTS) (30 ECTS by semester).ECTS is an instrument adopted by Europe after Bologna process to facilitate the comparability of degrees in Higher Education in the European space (46 countries).One ECTS represents, normally, 25-30 hours of student work.
The Master programs (MSc) corresponds to a second cycle of studies and, normally, includes four semesters and 120 ECTS.The Doctoral programs (PhD) includes, with some exceptions, 240 ECTS.The PhD incorporates a year with courses and two years to develop the thesis, so it is short duration program and much focused in a specific area.
The study plan of each Master Integrated degree was analyzed and the courses, compulsory and optative, with a title related to sustainability, were counted and registered in the excel file referred above.After identified the courses, the paper' authors read, interpreted and analyzed the objectives of education, key learning outcomes and program summary.For each was also registered the ECTS number and the teaching and assessment methods.
Also, it was registered the courses of each Master and PhD, quantifying the number of courses that are related to sustainability.This allowed the authors to define criteria in order to identify the programs more or less focused on integrating sustainability in the courses.In a first paper (Colombo & Alves, 2016), it was decided to classify in two groups the engineering programs attending to the number of courses related to sustainability and the corresponding number of ECTS: 1) Strongest: programs very akin with inclusion of sustainability in many courses; 2) Weakest: programs with one or none courses with this topic.
With the extended study to master degree and doctorate programs this classification was also extended to include one more category: medium.This was necessary because there are programs with a number of courses involving sustainability but that do not have a thematic predominance.This is similar to the category "Sustainability forms part of what we do" of the study of Hansen et al. (2014b).
Thus, in this study the categories considered were: • Strongest focus -programs that have more than three courses related to sustainability.According to (Hansen et al., 2014b) is the category "Sustainability is everything we do!" that means programs very akin with inclusion of sustainability in many courses.
• Medium focus -programs that have up to three courses related with sustainability.This corresponds to the category "Sustainability forms part of the what we do" of Hansen et al. (2014b) that means sustainability is not at all visible in the program curricular and yet there are elements of sustainability in some of these programs.
• Weakest focus -programs without courses with sustainability topics.
It is important to consider that the study from Hansen et al. (2014a) was a qualitative research, while this study is predominately quantitative and deeper considerations related to the sustainability integration could not be done.This study is limited by the contents on the official website that normally is not detailed enough.Another research method such as interviews should be used, to deep this study, to better understand if and how sustainability concepts are worked in the course.As the study of Dahms et al. (2013) demonstrated, results of a documentary analysis could be very different from the interviews results.

Sustainability contents in engineering programs and courses
This section presents the university context where this study was based.After this, the programs and their classification are presented and a proper discussion is followed.

Study context
This study was developed in a Portuguese Public University located in the North region of Portugal.It has about 20,000 students, of whom approximately 50% are MSc and PhD students.The University is on the top of the Portuguese Universities listed in the Times Higher Education ranking from The 100 under 50 (2013,2014).This University has many projects with the goal of promoting sustainability in the campi and in the around community such as the compromise to launch sustainability reports yearly, an Agency for Energy and Environment (AUMEA) and a Landscape Laboratory.Additionally, this University has many research units concerned with the sustainability, being the most recent, the Institute of Science and Innovation for Bio-Sustainability (IB-S).
This University produces a sustainability report since 2010 following the Global Reporting Initiative (GRI) guidelines.These guidelines defined three dimensions for the performance indicators: environmental, social and economic that this university measure.Additionally, the university introduced a fourth dimension: cultural due to the strong emphasis in a cultural activity (Ramísio, 2015).This University as an institution is concerned with sustainability and as a Higher Education Institution has also been concerned that their curricula promote opportunities for their students to learn, to research, to innovate and to reflect in sustainability contents and main issues.
This university has eight Schools and three Institutes, specified below: 1. School of Architecture The School of Engineering programs are the selected sample for this study and, in the period 2016/2017 includes 15 Integrated Master Degrees (IMSc), 27 Master degrees (MSc) and 24 Doctoral Programs (PhD).Table 1 presents a summary for the degrees of School of Engineering.
The English page of the university website was consulted to obtain the information.However, some courses were not in English, just in Portuguese, so the paper authors hope that the translation made was the one expected.
The following sections present these degrees from the lowest to the higher level.Each section is divided in a main section and three subsections.Each main section presents a table that presents the classification of the degrees by the three categories referred in the research methodology (to answer the second research question).In the main section is also provided a summary of the teaching/learning methodology revealed in the websites of each course.Each exception is described in the program/course respective (to answer the third research question) in each subsection.

Integrated Master degrees: sustainability focus
This section presents the 15 Integrated Master's degree (IMSc) identified in Table 1.The Table 2 presents the results of the collected IMSc, and the number of courses with a name related to sustainability thematic.These programs were ordered by the number of courses related with sustainability and the corresponding number of ECTS to facilitate their classification in the discussion section.
About the approach and teaching/learning methodologies to work sustainability or something related, there was no direct information in the presentation of the courses.The description of some of the courses talks about the importance of the integration between theory and practice and also the development of the critical and creative spirit of the students, but nothing is specified about the methodology used for this.Without further details, it is mentioned on the websites of each course that this is based on work groups and/or projects, but  nothing is said if it is really Project-Based Learning (PBL), a methodology that opens the possibility of a work more oriented towards sustainability, although, depending on the theme or focus of the project.Investigating the information of the disciplines, it was provided only general information and in the item "teaching type" only informed if it requires student presence or not (e.g.distance learning course).However, there are some exceptions that will be described in the Master Integrated respective section.

Integrated Master with strongest focus
As identified in Table 2, 20% of the programs were considered with the strongest focus in sustainability.The strongest is the Civil Engineering with 30% (90 in 300 ECTS) of its ECTS with such focus.Civil Engineering is very akin with sustainability themes and topics.This program is organized into eight semesters of common core.In these semesters, nothing is in terms of environmental issues was found.The following two semesters are for training in four specific branches.In these four branches the structure of the two semesters is: in the first two compulsory courses, three electives of the specific area and an optional area of any University, and the second half of the final project.The branches are four: 1) Construction, 2) Hydraulics and Environment; 3) Planning and Transport Infrastructures and 4) Structures and Geotechnics.
The profiles of Structures and Geotechnics and Planning and Transport Infrastructures do not present courses related to sustainability.However, the profiles of Construction and Hydraulics and Environment have compulsory courses focused on this theme: Sustainable Construction (5 ECTS) and Quality, Safety and Environmental Management (5ECTS) and Water and Wastewater Treatment Processes (5 ECTS) and Water Management (5 ECTS), respectively.
It can be noted that these two profiles can be almost entirely focused on the area of sustainability if the student opts for courses with this approach.Also, by the number of optional courses, there would be the possibility of having a focus on issues environmental, however, it is important to note that none of this approach is worked in previous semesters.Among the courses, optional or not, that students can choose, there is the possibility of working on environmental issues, at least, in 14 courses such as Environmental Impact Assessment (6 ECTS), Design and Operation of Treatment Plants (5 ECTS) or Green Buildings (5 ECTS).It is important to notice that the number of optional courses are only four.
According to the description of the Biological Engineering program, the students are "[…] The graduates will be competent professionals able to collaborate with the cleanup and quality control sectors of these industries […]".This program is, by its nature, environmental focus.In the 7 th semester the program is divided into two branches: Chemical and Food Technology and Environmental Technology.The branch of Environmental Technology presents six courses specific to the area in the 7 th and 8 th semester and obviously focused on the sustainability: Materials Engineering program has three elective courses suitable for introduce sustainability issues: Composite materials (5 ECTS), Solid Wastes Treatment (5 ECTS) and Metallic Recycling (5 ECTS).Compulsory courses has Materials and Environment (5 ECTS), that involve sustainability topics and Materials Degradation (5 ECTS), that could involve sustainability topics.
In all cases, it is important to notice that some of the courses are naturally related with the environment, but not necessarily have their focus in sustainability.At the same time, others are not so related with sustainability but could be worked with this focus.This strongly depends on the teacher or on the learning methodology adopted.

Integrated Master with medium focus
In this category, it was introduced Polymer Engineering, Biomedical Engineering, Industrial Engineering and Management, Mechanical Engineering, Textile Engineering (and after work).This represents 33% of the Integrated Masters offered by this university.
Polymer Engineering has a course named "Integradora", in English means Integrative, in the first seven semesters.In the 8 th semester it has two compulsory courses that involve environmental thematic: 1) Natural and Biodegradable Polymers (5 ECTS) and 2) Management and Environment in Plastic Industry (5 ECTS).In the rest of the courses, nothing was observed that indicates orientation for environmental issues.
Biomedical Engineering is organized like the others Integrated Masters.In the last two years (4 th and 5 th ) only one elective course includes environmental issues: Solid Wastes Treatment and Hospital Effluents (5 ECTS).
The Industrial Engineering and Management (IEM) program also presented just one elective course designated as Eco-Sustainable Production.Others could be orientated to sustainability issues but it depends on the teacher.Additionally, IEM has a type of course that gives flexibility to do whatever the coordinator of this course wants.This type of course is Integrated Project that is suitable to do this.IEM program has three Integrated Projects: Integrated Project of Industrial Engineering and Management I (IPIEMI -1 st year, 1 st semester) and Integrated Project of Industrial Engineering and Management II and III (IPIEMII: 4 th year, 1 st semester and IPIEMIII -2 nd semester) described in Alves & Leão (2015).These IPIEM projects involves all courses of the semester where it is developed.
Particularly, in the first semester of the first year, the project developed by the teams of students always approach sustainability issues (Moreira et al., 2011).Under the context of Project-Based Learning (PBL) the IEM students have been developing a sustainable product (e.g.bio alcohol, solar cooker, etc.) and the production system to produce this, where the students could develop sustainability competences (Colombo et al., 2014;Colombo et al., 2015a).The courses involved are Introduction to Industrial Engineering and Management, Calculus, Linear Algebra, Chemistry and Algorithms and Programming (all courses has 5 ECTS), involving a teacher's teamwork and effort from different Departments and Schools (Alves et al., 2015(Alves et al., , 2016)).These authors also believe, by doing this, they are in the right path to achieve DESD (Colombo et al., 2015b).
The Mechanical Engineering program includes an elective course called Energy and Environment that is focused in environmental thematic.This program also presents a course "Integradora", like Polymer Engineering, in the first eight semesters (1 st to 4 th year) that it serves for the students to develop a project.Nevertheless, by the description presented in the University website, this course did not integrate a project like the one developed in the IEM program, i.e., the project is developed inside this course not recurring to the others courses in the semester.
Textile Engineering has one course focused in environmental issues: Environmental Factors in Textile Industry (5 ECTS).It presents an interdisciplinary project from the 2 nd to 8 th semesters (Interdisciplinary Projects I-VII) where the students had the opportunity to explore sustainability issues.Particularly, in the Interdisciplinary Project IV, the theme of the project is very specific: "Quality and environmental and energy sustainability in the design and development of a textile product: coveralls".None information is in the website about the teaching/ assessment methods.

Integrated Masters with weakest focus
Telecommunications and Informatics Engineering, Industrial Electronics and Computers Engineering, Engineering and Management of Information Systems (and after work hours), Physics Engineering do not present courses that indicates issues related with sustainability.This represents the remaining 40% of the courses.

Master degrees
There are 27 master degrees (MSc.) offered in the website of the University.From these, with exception of Structural Analysis of Monuments and Historical Construction, with 60 ECTS, and Sustainable Built Environment with 90 ECTS, all programs have 120 ECTS.Table 3 presents the Master Programs and the number of courses for each related with sustainability.
The third question of the research cannot be answered with details, as in the case of Integrated Masters, because in the websites of the courses, there was no direct information on the approach and teaching/learning methodologies to work in sustainability or related, and the same happen by searching the specific information for courses.The exceptions are presented in the respective section of the program and course.In spite of the paper´s authors did not identify integrated projects, according to the information available, these masters are organized in a theory, practice and experimentation combination in a context of learning oriented to project, defined by the Bologna process.

Masters with strongest focus
In this category are included three programs (11%) of the master programs as the Table 3 shows.Sustainable Construction and Rehabilitation, as the name implies, has sustainability at its base, especially in the first of two specializations: Sustainable Building Conception and Management and Building Maintenance and Rehabilitation.In this program, 50% of the ECTS are directly related to the theme of sustainability, with three compulsory subjects and one optional: • Eco-efficient Construction Materials (5 ECTS) • Ecology and Sustainability of Constructions (5ECTS) • Energy and Comfort in Buildings (5 ECTS) • Sustainable Structures Design (5 ECTS) (optional) The specialization Sustainable Building Conception and Management have two other compulsory courses: Efficient and Sustainable Building Design and Construction (5 ECTS); Sustainable Building Project Management (5 ECTS).According to the program information, this Master degree was organized in theoretical, practical and experimentation areas accordingly to Bologna orientations.
The Master on Environmental Management is oriented to problems' solution in process industries, as well as the acquisition of abilities, tools and soft skills in clean technologies and source pollution control that contribute to sustainable development.As expected, all courses involve the sustainability thematic: • Clean Processes and Products (5 ECTS) It is important to refer that in this master and in the previous, the master thesis have the sustainability focus.An important aspect is that in some cases there a higher number of courses with an approach of sustainability than the ones that the students should frequent (i.e. that are compulsory).

Masters with medium focus
In this category were included 26% of the master degrees, namely the ones presented in the Table 3.The Master in Systems Engineering aims to promote the study of complex and large scale systems.Curricular units are organized in four coherent topics: Logistics, Industrial Informatics, Decision Technologies and Quality.Some work areas where the professionals of this master could develop their activity are Manufacturing and services companies, public and private health services, consultancy, transportation systems, retailing, banks, financial and insurance, telecommunications, energy systems, among others.From these kind of activity it is evident that an approach of sustainability would be important for these professionals.
Nevertheless, what was founded was a course Lean Production Systems (5ECTS/120ECTS) which according the teacher could be worked to integrate sustainability concepts.This master offers a course of integrated project and two integrated projects in the Logistic option.
The master in Engineering of Product includes eco-design and eco-efficiency courses that focused in sustainability.It is expected that this focus is maintained in all courses of the master attending to the development and innovation that imbed.
The Master in Engineering and Quality Management puts emphasis on engineering techniques and management applied in planning, control of process and in the design and improvement of products and services.In this master it was found an optional course directly related with sustainability "Sustainability and Social Responsibility" (5ECTS/120ECTS) and a compulsory course called "Lean Six-Sigma" with some possibilities to integrate sustainability.Nevertheless, the paper authors consider that this master could have a greater approach to sustainability attending to association of this theme with quality.
The MSc in Urban Engineering presents a multidisciplinary approach focused on the following domains: urban planning, hydraulic and environmental structures, road infrastructures and urban geotechnics.In spite of indicating a need of an integrated approach to the urban problems solutions, did not present integrated projects.The courses focused on sustainability are three: Sustainable Mobility, Sustainable Urban Drainage and Urban Environmental Management (15 ECTS/120ECTS).Some courses deal with environmental resources such as Water treatment, Water Resources Management, however the focus could be or not of sustainability.But it is important to notice that in the master presentation it is focused the knowledge and competences development for sustainable management of cities.
The Master's in Engineering Project Management (MGPE) aims to train professionals of various profiles, prepared to manage technology development and implementation processes of highly complex engineering projects.The training endeavored by MGPE enables specialization into three engineering project areas: construction (building and civil engineering works), industrial engineering (manufacturing industry and services) and information systems (information technology and information systems).It is observes that in the master presentation there is not a sustainability approach, only economical and of quality.Only one course refers environment: Quality, Environment and Safety Management (5ECTS/120ECTS).
According to the presentation of the program, the "Textile Chemistry" covers areas of the textile sector that account for the highest added value: dyeing, printing and finishing.It also includes the related sector of chemical fiber production, as well as all aspects related to protection of the environment, essential for the European textile industry.Only one course "Environmental Factors in Textile Industry" (5ECTS/120ECTS) shows the environmental approach.There is a possibility for this Master to approach sustainability because the curriculum of the program's course is designed according to the teaching-learning approach, characterized by stimulate learning by placing students with real problems (problem-based learning) and is part of a strategy to offer multidisciplinary postgraduate training.
Though the master presentation of Technology and Food Science did not presented an approach of sustainability, it was found a higher number of courses with this focus than in others programs.They are: Environmental Technologies, Quality and Environment Management Systems Certification, Organic Farming (16ECTS/120ECTS).

Master with weakest focus
In this category, it were included 17 programs, i.e., 63% of the total master degrees that do not present any course related with sustainability (Table 3 above).It is evident that some programs do not facilitate the theme integration but there are others that is expected a clearer approach to sustainability but, by the contrary, do not work at all the theme.The integrated projects that could allow a systemic approach to sustainability was just identified in five programs of this degree.

Doctoral programs
The School of Engineering offers 24 doctoral programs from which 11 with 240 ECTS, 12 with 180 ECTS and one with 210 ECTS.Table 4 presents the PhD program and the number of courses and ECTS for each PhD related with sustainability.It is important to notice that most courses in these programs are optional.
Regarding the third research question, in doctoral programs, as in master and integrated master, there is no specific information on teaching/learning methodologies of the courses and, consequently, to work sustainability or related topics.The exceptions are presented together with the presentation of each program in the respective section.

PhD with strongest focus
Only 12,5% of the PhD programs were classified as strongest.From the 30% of the PhD that presented an approach to sustainability, the program Sustainable Built Environment was considered the strongest because it offers a great number of courses with this focus such as Eco-efficient Construction Materials; Ecology and Sustainable of Construction; Urban Environmental Management; Life Cycle Assessment of Building Elements; Neighborhood Sustainability Performance; Outdoor Environment; Social and Economic Sustainability; Sustainable Retrofit of Buildings.
In this category was also considered the Mechanical and Civil Engineering.The Mechanical Engineering PhD (240 ECTS) presents, from the seven optional courses, four focused in environmental issues that are: 1. Renewable Energies (5 ECTS), 2. Environmental Protection Technologies (5 ECTS), 3. Waste Treatment and Metal Recycling (5 ECTS)

Energy Management and Conversion (5 ECTS).
The Civil Engineering PhD (180 ECTS) is stronger than the previous in approaching the sustainability.From the four optional courses Scientific-Technological and the two Behavioral and of Innovation, there are some related with sustainability: There are others with good possibilities to integrate environmental approaches, such as: Water Quality and Public Health (5 ECTS), Rehabilitation of Constructions (5 ECTS) and Intelligent Cities (5 ECTS).It is important to notice that there are many courses that according to the objectives of the course or the teacher could easily integrate sustainability concepts.

PhD with medium focus
In this category was included four PhD programs (17%).Some are very similar to the PhD included in the previous category.The PhD of Industrial and Systems Engineering (180 ECTS) offers 96 courses but a few are related with sustainability or work sustainability.From these courses PhD student should frequent mandatorily two, none related with sustainability and all the others are optional.It was identified eight optional courses that could have an approach to sustainability depending on the themes and the approach worked by the teacher.These includes Economy and Environment (5 ECTS) more related to the sustainability and others could offer this possibility such as Lean Project Management, Lean Flow Management, Lean Production Systems and Integrated Management of Projects.
The Textile Engineering PhD (180 ECTS) presents only an optional course focus in environmental theme that it is Environmental Factors in Textile Industry.Nevertheless, in a high number of courses it was identified the possibility of sustainability approach.
Although expected an environmental focus, the Water and treatment of residues PhD (180 ECTS) could not be identified as a strongest in sustainability because, beyond offering a few courses, are only two the courses in the sustainability theme: Solid Waste Management and Treatment (5 ECTS) and Recycling and Materials (5 ECTS).
In the PhD of Advanced Materials and Processing it was identified the optional course Waste Recycling and Valorization (4,5 ECTS) related with sustainability and the compulsory course Material Degradation and Protection (6 ECTS) that indicates an approach to sustainability.

PhD with weakest focus
From the PhD offered, 16 (70%) did not present courses that indicate a clear approach to environmental issues.Although, some presents strong possibilities for such, some in a great number of courses and others in a few such is the case of the courses Management of Innovation and Project Management presented in a high number of programs.It is important to notice that for some programs it was expected a strong approach such as Bioengineering and Biological and Chemistry Engineering but this do not happen.

Discussion
From the above it is possible to provide a summary of the number of programs in each category by degree.This summary is represented in the graph of the Figure 1.Only three programs in each degree were classified as strongest, being the IMSc the degree with higher percentage of programs that approach sustainability.
It can be observed that some programs are naturally related with sustainability as the programs classified as "Strongest" above.Nevertheless, in a program of 300 ECTS, only a small part is dedicated to sustainability issues even in the Civil Engineering program, the strongest one (just 30% of ECTS are related with this).Based only in the information provided in the university website, it seems that many programs and courses remain without addressing this topic (Figure 2), in spite of having the potential to work sustainability issues.For the IMSc just, approximately, 6% are related to sustainability.
There are others (e.g.classified here as "Medium" and "Weakest") that are not so directly related or indicate sustainability approach but they have been worked to include this, orienting the teaching to this focus.This depends on the teacher and pedagogical approach adopted for the course.For instance, developing projects in the courses and, more important, in a context of a learning methodology like PBL (IEM projects) it seems a better way to engage students in sustainability cause, as referred in the literature review.A consult to the various courses details (e.g.teaching and assessment methods described in the course information) reveals that learning methodologies and methods are mainly based on traditional methods such expositive classes, groups work, case studies, discussion in the classes, assignments, tests, among others.The exceptions were referred in the respective program and/or course.Some courses also referred the use of simulation informatics tools and visits to laboratories.Laboratory courses are the courses that, by their nature, engage students in practical activities.All programs that includes Interdisciplinary Projects or "Integradoras" refer the project based teaching but none (except IPIEM courses) referred the specific learning methodology used.
Even worked with a methodology as the PBL, as already discussed, effective assumption of sustainability in professional practice will only occur if this is a theme worked throughout the program.This requires that all those responsible for the training of future professionals, teachers, must have incorporated this issue at the core of each of the disciplines.
The programs and courses presented here that integrate sustainability are a small sample of what has been done in university.Nevertheless, as already referred in the research methodology section, the documentary analysis as a research method is very limited because much more could be in progress.As the literature reviewed showed (Dahms et al., 2013;Hansen et al., 2014a) it is necessary more research methods to better study this theme, e.g.interviews.
Additionally, others aspects must be improved to increase awareness of sustainability concept.This should start by training the trainers (teachers) and this requires a transformation work, part of a larger meaning (Colombo, 2004).As stated by Morin & Le Moigne (2000) the true reform (of education systems) will only  It is understood that this training provides an opportunity to transform both in terms of course content and methodology.Create teacher training programs can be a big step for the effective integration of sustainability in engineering education (European Commission, 2013).This formation offers the means and methods to effect change, involving the paradigmatic and epistemological questions (worldview) and pedagogical (teaching-learning methods).Such methodologies and methods should include a learning process similar to the one founded in professional future of graduates, namely, practical activities, hands-on approaches, projects among others.This means a model that it is interdisciplinary, and not divided in courses, based on a strong philosophy that promote content but also competence mastery (Flumerfelt et al., 2014(Flumerfelt et al., , 2015;;Alves et al., 2014;Colombo, 2004).
Additionally, a lot of questions continue without an answer, for example, the ones related with the performance measures to consider to evaluate sustainability competencies; the contents to integrate; the learning/teaching methodologies; the training of teachers to teach sustainability, among others.

Conclusion
The objective of this paper was to analyze the engineering programs and courses of a Portuguese Public university on the point of view of sustainability integration.This university has some initiatives to greening the campus reported in the sustainability report.Also, many research centers are dedicated to this theme.Additionally, some programs are also worked to introduce this thematic.
Some of these are engineering programs that are more or less related with sustainability theme.According to the number of courses named-related with sustainability, the programs of Integrated Master were classified as "Strongest" (three were identified in this category that corresponds to 20% of the programs), Medium (six programs, 40%) and "Weakest" (six belongs to this group, the remaining 40%).The Master programs (2 nd cycle), three of them were considered "Strongest" (11%), seven are "Medium" (26%) and 17 "Weakest" (63%).Among doctoral programs three of them are considered "Strongest" category (13%), four are considered Medium (17%) and 17 programs does not have any sustainability approach being inserted in the "Weakest" category (71%).
The sustainability theme is integrated in most courses using traditional approach instead of active methodologies, such as PBL active learning methodologies.PBL was inserted in IEM projects but sustainability is worked only in the first year.With a different approach, some engineering departments indorse research and support communities' centers such as Wastes Valorization Centre that promote conferences in areas related with sustainability.An immense potential exist in many programs and courses to work sustainability issues attending to the reduced percentages of courses related with sustainability when compared with total number of courses offered (6% IMSc.; 15% MSc. and 23% PhD).This paper makes a contribution to remember the need to increase efforts in integrating sustainability in university degrees in order to greening the campus of university and educate for sustainable development.
By being limited to the information retrieved from the published study plans in the official website, the paper authors considered this a preliminary study.As other studies, namely the above referred, there are many programs that do not incorporate sustainability and a lot has to be made to promote this in the courses.So, this kind of study is necessary to increase the knowledge about efforts to pursuit education for sustainable development.As a future work and to know better the sustainability integration through PBL in the engineering courses of this university, a deeper study needs to be undertaken by using other research methods such as, for example, interviews with teachers.

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90 ECTS) in Sustainable Built Environment (iMiSBE) is developed by partnership among of universities and its objective is to promote a global movement in order to build an environment.As the name indicates, the focus of the program is sustainability and, as the previous, all courses have this focus, in spite of two (Building performance and Methods and Tools) do not have the word in the title.The courses are:• Science of Sustainable Neighborhoods (5 ECTS)• Building Performance (5 ECTS)• Materials, Products and Systems for Sustainable Construction (5 of Buildings (5 ECTS)• Dissertation on Sustainability Built Environment (5 ECTS)

Figure 1 .
Figure 1.Number of programs in each category by degree type.

Figure 2 .
Figure 2. Total number of courses offered vs courses related with sustainability.

Table 1 .
Summary of the degrees of School of Engineering.
*It includes compulsory and optional.

Table 2 .
Number of courses and ECTS related with sustainability in IMSc degrees and their category.

Table 3 .
Number of courses and ECTS related with sustainability in Master Degrees and their category.

Table 4 .
Number of courses and ECTS related with sustainability in PhD degrees and their category.