This is a correct and usable sentence in written English.
You can use it whenever you are trying to express that something is difficult to ensure or guarantee. For example, "It is difficult to guarantee the long-term success of a new business venture."
However, it is difficult to guarantee its effectiveness in a theoretical way, because PSO is essentially a stochastic approach.
Third, its effectiveness is evaluated through various numerical examples, because it is difficult to guarantee the performance of the proposed method theoretically due to a probabilistic nature of the PSO.
Third, its effectiveness is evaluated through various numerical examples, because it is difficult to guarantee the performance of the proposed method theoretically due to the probabilistic nature of PSO.
It is difficult to guarantee that all possible situations are tested when evaluating a location method.
Nevertheless, this parameter is influenced by experimental trials; it is difficult to guarantee an optimal effect on network operation.
In most group techniques, it is difficult to guarantee equal participation among all group members (Macphail, 2001).
Johnson also said it was difficult to guarantee the EU question will be settled forever by the referendum, even though David Cameron has ruled out the idea of a second poll in future.
The surface temperature was measured using a digital infrared temperature sensor (FT-H10, Keyence Co .. Since it was difficult to guarantee a uniform temperature of the SMP sensor, we raised the temperature to approximately 80 °C (significantly above the T g of 45 °C) to ensure that all of the SMP material in the sensor was well within the rubbery state.
When any single source of fuel accounts for even a third of the power flowing into a grid, the security of that system is difficult to guarantee.
