The phrase "a close supervision of" is correct and usable in written English.
It can be used when referring to the act of overseeing or monitoring someone or something closely to ensure proper conduct or performance.
Example: "The project requires a close supervision of the team to ensure that all tasks are completed on time and to the required standards."
Alternatives: "intensive oversight of" or "detailed monitoring of".
This involves increasing the assignment of street cleaners to the residential districts, a closer supervision of private cartage firms, the issuing of warnings & summonses to people who dump refuse out of their windows.
Some of these territories were placed under the UN Trusteeship Council, which resulted in a closer supervision of their administration by the UN and in their speedier progress toward self-government or independence.
A fact that public providers were more comfortable with SP than those in the non-public sector may be linked to a closer supervision of health management teams.
Woodhill prison in Buckinghamshire houses a Close Supervision Centre (CSC), one of three set up in 1998 to hold the most disruptive and violent prisoners – not, supposedly, those with mental health issues.
Arterial blood gases were measured at initial values and after 1 hour, 3 hours, 12 hours and then every 24 hours during NIV; the patient was assessed by a respiratory therapist under close supervision of a physician trained in NIV.
Never use a numbing cream without close supervision of a qualified professional.
If starting out as an apprentice however, these will have to be learned on the job (and in the case of IBEW apprenticeship training - a classroom) while working under the close supervision of a journeyman electrician.
In order to complete sampling and data collection, a surveillance team was formed under the close supervision of a research manager (RV).
A PBI system requires close supervision of VHWs and detailed record keeping.
In turn, such a system implies the close supervision of activities at all levels of the health system and an integrated executive team with room for supervisors to present and discuss their findings.
