The phrase "a kind of problems" is not correct in standard English; it should be "a kind of problem" to maintain singular agreement.
You can use it when referring to a specific type or category of problem, but it must be in the singular form.
Example: "This project presents a kind of problem that requires innovative solutions."
Alternatives: "a type of problem" or "a sort of problem".
Such a kind of problems could be adequately modeled by differential equations that contain a delay operator.
This paper may be the first one to establish existence results for such a kind of problems.
The methods used are standard, however, their exposition in the framework of such a kind of problems is new and skillful.
Such a kind of problems include two-point, three-point, multipoint and nonlocal boundary value problems as special cases and attracting the attention of a few readers; see [10 13] and the references therein.
The global optimal solution to such a kind of problems presumes test of all feasible hypotheses in the list, making the decision in favor of the best one (in the prescribed quality measure), and rejection of all other competing hypotheses [23, 24].
Self as a kind of problem to be solved".
Since artificial intelligence technologies and applications are a kind of automated problem solvers, and moral deliberations are a kind of problem, it was only a matter of time before automated moral reasoning technologies would emerge.
Such a kind of problem is known as the problem of robust stability, which has received a great deal of attention.
Where youth may have been limited in their ability to engage with the traumatic event directly (a kind of "problem solving" strategy), youth may turn to alternative strategies such as "trying to forget" and praying.
These are the kind of problems with a core player that can hurt a team.
But this earliest state known as a singularity has caused all kind of problems for physicists since it was postulated.
