The phrase "as mentioned in the beginning" is correct and usable in written English.
It is typically used to refer back to something that was said at the beginning of a speech, article, or similar document. For example: "As mentioned in the beginning, the main point of this article is that camping is an affordable, exciting, and rewarding experience for the whole family."
As mentioned in the beginning, while new forms such as co-working is a growing trend, it is still far from the norm.
As mentioned in the beginning of this section, this has to be related to the fact that modulation symbols experience different equivalent channel gains.
As mentioned in the beginning, the positions of the atoms are an important quantity that material scientists would like to extract from atomic-resolution electron micrographs.
As mentioned in the beginning of this part, the main limitation for Ta3N5 is that we cannot make it until now chemically stoichiometric and without crystalline defects.
As mentioned in the beginning of this section, unlike active attacks, passive attacks do not attempt to alter the watermarking resources.
As mentioned in the beginning of this section, the supporting expert group validated the wording and soundness of all items as well as the structure of the entire questionnaire from a semantic point of view as suggested by CHURCHILL[47].
As mentioned in the very beginning of the article, the main components of this current debt crisis are the 17 nations who use the euro.
To address these issues, as mentioned in the very beginning of this article, the Committee on Free Kindergarten Education has been set up to examine various issues relating to the long-term development and quality of kindergarten education as well as to make concrete recommendations to the EDB on the practicable implementation of free kindergarten education in Hong Kong.
As mentioned in the methods, at the beginning of the trial 41 patients were allocated to CD alone; data from this arm were not included in the efficacy analysis [1] nor are they included in the present analysis.
Here we give them for matrices, as we mentioned in the beginning of Section 2.
As we mentioned in the beginning, communicating across wide distances is a richer experience now than ever before.
