The phrase "are needed for successful" is correct and usable in written English.
It can be used when discussing requirements or prerequisites for achieving success in a particular context or endeavor.
Example: "Effective communication skills are needed for successful teamwork in any organization."
Alternatives: "are essential for achieving" or "are required for effective".
Water input in deserts is highly variable in space and time, and successive events which are needed for successful recruitment are extremely rare in hyper-arid environments.
Depending on the original data distributions, different transformation functions are needed for successful feature separation.
Substantial advances in the selectivity, permeability, and chemical stability of inorganic membranes are needed for successful application to gas mixtures.
Both types of information are needed for successful risk communication programs and design improvement of consumer products.
It can be seen that in the vast majority of cases, less than 1,000 coefficients are needed for successful convergence.
Detailed subsurface characterization data that capture geochemical and hydrogeologic variability, including a flux-based analysis, are needed for successful applications of PRB technology for arsenic remediation.
In addition, a range of resources – from grants and loans to fiscal measures and market-based instruments – will be needed for successful mitigation and adaptation on the ground.
Federal experts say complex threat scenarios (for instance, an American warhead being stolen and detonated in an American city) mean that many types of intelligence might be needed for successful identification.
In clinical practice it is to be expected that more than eight sessions will be needed for successful treatment of childhood abuse, as comprehensive E.M.D.R. therapy addresses the entire clinical picture.
Then, (f_mathrm{o}F_{2}) of at least 4 MHz during nighttime is needed for successful artificial aurora experiments.
Teachers were aware of the fact that demanding planning was needed for successful implementations of CLEs.
