▲你的句子有误。It is concluded 后面的 that 应引导一个完整的句子，但你的这个句子并不完整（没有谓语）。下面是 It was concluded that…句式的应用：

It was concluded that the poor little puppy had been abandoned. 结论是那可怜的小狗是被人遗弃。

It was concluded the project had to be abandoned for lack of funds. 结论是工程因资金匮乏只得放弃。

It was concluded that the car was so badly damaged that it had to be abandoned as a total loss. 结论是汽车损坏严重，只好彻底报废。 

▲你的句子要使之成立，应将 that 从句补充完整。比如：

It is concluded that the application of the effective methods is necessary. 得出的结论是，运用有效的方法是有必要的。

It is concluded that we must attach importance to the application of the effective methods. 得出的结论是，我们必须重视有效方法的运用。