When composing a scientific abstract, you should b...

When composing a scientific abstract, you should be very careful about language use and style, including the correct use of words, tenses, sentence patterns, terminologies and other aspects. Read the following sentences from abstracts, identify any incorrect use of language and make suitable revisions. 1) This paper discusses/examines three issues. The first issue is X. The second and third issues are Y and Z. 2) Introduced status for optical fiber communication at first. Then described some enabling technologies of dense wavelength division multiplexing (DWDM). 3) I examined the use of deep neural networks (DNNs) in the context of photo editing. 4) According to Author et al. (2010), there is a significant relationship between X and Y. 5) This motivated us to explore the use of DNNs in the context of photo editing. 6) Clocks with carefully controlled phases tapped from a local ring oscillator are driven to a bank of input samplers to convert the serial bit stream into parallel data and the overlap of multiple-phased clocks is used to synchronize the multiplexing of the parallel data onto the transmission line. 7) Due to global initialized data, immediate values, address calculations, redundancy in external input, etc.; the same value is used at the same program point as much as 80% of the time. Please identify the possible problems in the sentences above, and then try to offer revisions for each of them.