Gold Open Access- Erstveröffentlichung in einem/als Open-Access-Medium
Refine
Year of publication
- 2018 (3) (remove)
Document Type
Language
- English (3)
Has Fulltext
- no (3)
Is part of the Bibliography
- no (3)
Keywords
- ARRAYS (1)
- AU (1)
- DAMAGE (1)
- ESP curricula (1)
- ESP practitioners (1)
- GROWTH (1)
- IMPLANTATION (1)
- NUCLEATION (1)
- RECOVERY (1)
- TECHNOLOGY (1)
Institute
- Fakultät Angewandte Natur- und Kulturwissenschaften (3) (remove)
Begutachtungsstatus
- peer-reviewed (1)
Instructors of English for Special Purposes often describe the challenge of determining which specific content and competencies to address in their courses. After all, it is the focus on technical subject matter which students expect to differentiate engineering ESP from standard EFL. Yet ESP instructors, who frequently have a background in fields such as applied linguistics or education, often receive little input from technical specialists as to which specialist topics are most relevant to their target domain.
Our research indicates that ESP instructors in higher education can leverage a valuable resource to enrich teaching effectiveness: students who have already gained professional experience. As part of a longitudinal study at two universities of applied sciences (UAS) in southern Germany, engineering students at the beginning of their first semester of compulsory technical English participate in an online survey. The course participants provide relevant biographical information such as work experience and evaluate the perceived importance of a selection of skills and applications for a Technical English course.
The surveys, administered in October 2016 and October 2017 and encompassing nearly 1000 respondents, provide compelling insights. Analysis reveals conclusive correlations between the perceived importance of course components and students' declared level of previous work experience. Listening comprehension, reading comprehension, process description, and test and measurement are topics whose importance correlates positively with work experience level. In addition, there are clear trends relating work experience level with the importance of the reading and writing of technical documents as well as communication and interaction.
This data provides empirically-founded criteria for selecting the topics to include in the scope of a Technical English course for engineers, informed by the judgment of students with occupational experience. Additionally, recognizing that students with work experience have legitimate practitioner credibility allows instructors to identify and select relevant subject matter in concordance with experienced students' learning objectives. ESP learners will profit greatly from cultivating skills with proven practical applicability.
We show that templating a Si surface with a focused beam of Si2+ or Si+ ions can create suitable nucleation sites for the subsequent growth of self-assembled Ge quantum dots by chemical vapor deposition. To determine the mechanism of patterning we use atomic force microscopy to show that, similar to Ga+ patterning, the formation of a surface pit is required to enable control over Ge quantum dot locations. We find that relatively high implantation doses are required to achieve patterning, and these doses lead to amorphization of the substrate. We assess the degree to which the substrate crystallinity can be recovered by subsequent processing. Using in situ transmission electron microscopy heating experiments we find that recrystallization is possible at the growth temperature of the Ge quantum dots, but defects remain that follow the pattern of the initial implantation. We discuss the formation mechanism of the defects and the benefits of using Si ions for patterning both defects and quantum dots on Si substrates.
The gasflow created by a minaturized dielectric barrier discharge (DBD) plasma actuator is measured by a MEMS-based thermal conductivity gas sensor giving an indication of flow velocity and flow direction. The possiblity of several sensors in a small area gives a far better accuracy of local flow phenomena compared to conventional sensors. This is important for a better understanding of plasma- induced flow characteristics.