The project payment scheduling problem with bonus-penalty structure is defined and its assumptions are identified firstly.
首先明确了研究的假设条件并对具有奖励惩罚结构的项目支付进度问题进行了定义；
Then the optimization models of multi-mode project payment scheduling problems(MPPSP) are constructed from the contractor's and the client's viewpoints respectively.
随后分别从承包商和业主各自的角度构建了多模式项目支付进度的优化模型；
Your payment account balance is not enough to pay for the session(s) you are scheduling.
您的支付账户余额不足以支付您当前预约的课时费用。
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