The literature research is performed by following the Systematic Literature Review (SLR) method as described in (Kitchenham & Charters, 2007).
The main phases of the review are: Planning & preparing the review
o Determine the search questions from the research questions o Determine the relevant sources
o Determine the search terms from the search questions Conducting the review
o Search the sources
o Select the relevant articles
o Collect the theoretical content to build the frame Reporting the review
The review process is performed in a practical way. The search results are interpreted while searching and only relevant articles on the subject are selected. Entering the search query in the library of the sources does this. When the search result is over 200 hits, adding a search keyword will perform a narrower inquiry. While browsing through the results, based on the title and abstract an article is selected for further reading. From a selected article the snowball technique (Greenhalgh & Peacock, 2005) is used to find more recent articles or when needed to trace back to the original article for the base methodology description.
Selecting a relevant article is based on the following criteria:
Is the subject of the article adding value to the scope of this thesis in the topics Embedded Automotive software management and/or Enterprise Architecture and/or maturity modeling & assessment?
Is the article scientific and peer reviewed?
The results of the examination are used for this phase of the research. With the outcome of the examination, a.
T
HE SOURCESThe primary sources used in this thesis are: IEEE Digital Library (www.computer.org)
Springer Link (http://www.springerlink.com/home/main.mpx) Elsevier Science Direct (http://www.sciencedirect.com)
Ensco (http://search.ebscohost.com) Google Scholar (http://scholar.google.com)
The above sources are searched first to find the main articles and primary studies of the subjects. Additional sources are added where needed.
S
EARCH TERMSThe terms used for searching the articles are summarized in this paragraph. The actual queries differ per search engine or database, so those are mentioned in the next paragraph. Also, the various combinations of the different terms will lead to other articles, and those are reported in the results if relevant.
The search terms are:
Enterprise Architecture Engineering o Product engineering o Systems engineering Automotive ISO 15504 Automotive SPICE Embedded software Global strategy
Capability Maturity Models
CMMI SPICE Software management o Requirement management o Configuration management o Variability management Methods Assessment Validation Software development
S
EARCH QUERIES USEDIn this paragraph, the various used search queries over the mentioned sources are reported. For all these searches the period from 01-2005 until 01- 2015 is used. This period is chosen because the most in-depth study is performed during the last decade within the domains of EA and embedded vehicle software. Where needed for an understanding of the base concepts, a trace back to earlier research is performed and reported in chapter 4. Per source database is mentioned the search query or keywords used, and the results in some articles found. The quick scan is performed on the titles and abstracts of the articles. Articles already found via previous searches are skipped.
TABLE 6 LITERATURE SEARCH QUERIES
Source database Results after
Search string Search Quick scan
IEEE (via IEEE Digital Library on www.computer.org)
Automotive AND SPICE 73 8
Global AND Research AND Development AND embedded AND Software AND Development AND automotive 92 3
Software AND management AND embedded AND Software AND Automotive AND Maturity 44 5
Maturity AND Models AND CMMI AND SPICE AND ISO AND 15504 AND Assessment 39 4
Software AND management AND embedded AND Software AND validation AND automotive 206 8
Total 27
Springer Link
Automotive AND SPICE 70 6
Global AND Engineering AND “embedded Software” AND Development AND automotive 185 4
“Maturity models” AND "enterprise architecture" 55 7
“Software management” AND "embedded Software" AND "Requirement management" 14 0 “Software management” AND "embedded Software" AND "configuration management" 18 0 “Software management” AND "embedded Software" AND "Variability management" 4 2
Total 25
Source database Results after
Search string Search Quick scan
Elsevier Science Direct (http://www.sciencedirect.com)
Automotive AND SPICE 210 4
“Maturity models” AND "enterprise architecture" 68 3
“Software management” AND " embedded Software" AND Automotive 186 9
“Software management” AND "embedded Software" AND "Requirement management" 62 7 “Software management” AND "embedded Software" AND "configuration management" 50 0 “Software management” AND "embedded Software" AND "Variability management" 22 3
Total 26
Ebsco host
The smart text search on Ebsco host is performed on the databases Academic Search Elite, Business Source Premier, E-journals, and Library, Information Science &technology Abstracts.
Enterprise Architecture Engineering Automotive Embedded software Truck market Software management Global Capability Maturity Models CMMI SPICE ISO 15504 Assessment
154 1
Google Scholar
Model AND “embedded software” AND "software engineering" AND automotive AND assessment AND capability AND maturity AND SPICE
107 4
Architecture AND enterprise AND assessment AND capability AND maturity AND “embedded software” AND "software engineering" AND automotive
358 0
REFERENCE DATABASE
The databases used to collect and manage the reference for this thesis is EndNote X7.
Within the database, the references will be categorized per subject. (e.g. EA, Global R&D, Embedded Software management, and Automotive) Before the articles are stored, they are already screened to be valid and identified as being relevant to the thesis.
The validity of the items and papers will be checked against the following rules: Articles and papers must be peer reviewed
Articles and papers must be public