The phrase "a close observation" is correct and usable in written English.
It can be used when referring to the act of carefully watching or examining something in detail.
Example: "After a close observation of the subject, the researchers noted several significant changes in behavior."
Alternatives: "a detailed examination" or "a careful scrutiny".
Realism rejects imaginative idealization in favour of a close observation of outward appearances.
D'Ambrosio sketches Kurt's premature coming-of-age story with a close observation filled with empathy and even humor.
He writes of horses and of those people with a close observation born of unsentimental love and experience.
A close observation of displacements and conformational changes in the residues lining drug-binding pocket was also carried out.
Police from the National Extremism Tactical Co-ordination Unit have announced they are keeping a close observation on any illegal activity such as workshops that incite violence.
At the same time participants, by engaging in formal analyses of representative selections of Etruscan works and monuments, will learn how to retrieve historical information starting from a close observation of the object.
Further directions include (1) a closer observation of real-world data-cleansing work and incorporation of observed characteristics of errors in experimental settings, (2) an incremental version of the algorithm, and (3) interaction with a human user to efficiently achieve an optimal repair.
Intending to get a closer observation of users characteristics and their differences, here are stated some aspects that aid the task of identifying aspects of the design process that would allow defining the user's characteristics: the user profile.
A closer observation of a single Gmf exhibits that there are voids between rippled graphene layers.
A closer observation suggests that HP is not confident of its future.
A closer observation (Fig. 10) identifies that the activation values of those pixels are largely different.
