related to the facility on the train, which can only be solved by train manufacturers to provide standard class carriages with good conditions. As to the train mangers, they need to consider the safety and comfortabilityof passengers at the same time. Therefore, the combination of requirements from train managers and passengers should be taken into account. Several physical manifestations have been compared in the table below as potential solutions. From Table 4, we can notice that only one or two functions can be satisfied by using the traditional tools, which can not only increase the working accessories of train managers, but also elicit repeated work so that more working stress is generated. Multifunction Tab, a modern electronic product can meet all the requirements of train managers at the same time, can increase the working efficiency and accuracy together.
4. Verification and Validation验证和确认
Validation activities have also been carried out by the group to evaluate whether the resulting solution can meet the requirements of users together with the overall mission aim.[2]The verification process would be a complete examine of the resulting items about their quality according to the international standards.[3]In addition, the functionalities and applicability would also be tested based on the requirements of the users. As to the validation process, proper and effective surveys could be conducted to evaluate the resulting items according to the users’ requirements. Several choices could be provided within the surveys so that a final resulting solution can be elicited. What’s more, the number of people who would take part in the survey should be large enough to make the resulting solution more convincing with confirm validation.
5. Conclusions总结
In the present task, our group applied V- model to analyse the user requirements together with the functional and physical decomposition, followed by the verification and validation processes, which has been proven an effective and beneficial method to raise a technical solution. The V- model is like a guidance to help the team seeking the key elements for each step, which makes the whole work more efficient and explicit.
More importantly, teamwork exhibited great power and potential within each step of this case although there were various, different or even opposite opinions in the group. To be more specific, each of us was aware of that the task was not that easy to be solved at the very beginning. However, each one of us spared no effort to contribute to the whole team at every step although lots of obstacles and difficulties were right in front of them. It is the teamwork that makes the whole task smoothly and beautifully completed.
References文献
1. Kevin Forsberg and Harold Mooz, (1991) “The Relationship of System Engineering to the Project Cycle,” in Proceedings of the First Annual Symposium of National Council on System Engineering, 57–65.
2. Sciolla, Rossella; Melis, F; Sinpac, Group et al. (2008). 'Rapid Identification of High-Risk Transient Ischemic Attacks: Prospective Validation of the ABCD Score'. Stroke (American Heart Association) 39 (2): 297–302.
3. Germing, U.; Strupp, C; Kuendgen, A; Isa, S; Knipp, S; Hildebrandt, B; Giagounidis, A; Aul, C et al. (2006).'Prospective validation of the WHO proposals for the classification of myelodysplastic
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