A (research study) can be rigorous.Logical formLearned from5 sentences. A refereeing can be rigorous.Logical formLearned from5 sentences. Constructions can be rigorous.Logical formLearned from5 sentences. A (course syllabus) can be rigorous.Logical formLearned from5 sentences. A formation can be rigorous.Logical formLearned from5 sentences. A (user testing) can be rigorous.Logical formLearned from5 sentences. A (screening procedure) can be rigorous.Logical formLearned from5 sentences. A defence can be rigorous.Logical formLearned from5 sentences. Study can be rigorous.Logical formLearned from5 sentences. Preparations can be rigorous.Logical formLearned from5 sentences. A (cost containment) can be rigorous.Logical formLearned from5 sentences. A strain can be rigorous.Logical formLearned from5 sentences. Teachings can be rigorous.Logical formLearned from5 sentences. A (cross examination) can be rigorous.Logical formLearned from5 sentences. A (consumer testing) can be rigorous.Logical formLearned from5 sentences.