基于产品合格率随机分布的投产量模型优化

当产品合格率随机分布时,建立起以投产综合损失费(欠产再投产费,过量产出费和不合格处理费)期望值为目标函数,投产量为决策变量的投产量模型。结合产品合格率随机分布不同(均匀分布和正态分布)推导求解了模型的最优解,得出了产量与投产量的等式关系,据此可有效地指导生产。最后通过数值实例分析验证了模型的有效性。     

Optimal inventory threshold for a dynamic service make‐to‐stock system with strategic customers

We consider a make‐to‐stock production system with one product type, dynamic service policy, and delay‐sensitive customers. To balance the waiting cost of customers and holding cost of products, a dynamic production policy is adopted. If there is no customer waiting in the system, instead of shutting down, the system operates at a low production rate until a certain threshold of inventory is reached. If the inventory is empty and a new customer emerges, the system switches to a high production rate where the switching time is assumed to be exponentially distributed. Potential customers arrive according to the Poisson process. They are strategic in the sense that they make decisions on whether to stay for product or leave without purchase on the basis of on their utility value and the system information on whether the number of products is observable to customers or not. The strategic behavior is explored, and a Stackelberg game between production manager and customers is formulated where the former is the game leader. We find that the optimal inventory threshold minimizing the cost function can be obtained by a search algorithm. Numerical results demonstrate that the expected cost function in an observable case is not greater than that in an unobservable case. If a customer's delay sensitivity is relatively small, these two cases are entirely identical. With increasing of delay sensitivity, the optimal inventory threshold might be positive or zero, and hence, a demarcation line is depicted to determine when a make‐to‐stock policy is advantageous to the manager.     

网络竞争情报的收集与利用

分析了网络竞争情报的来源。阐述了网络竞争情报资源的收集：确定竞争对手范围；了解竞争对手经营状况；了解与企业有关的政策；获取竞争对手的个人信息。并给出了网络竞争情报的处理利用途径：网络竞争情报处理系统根据企业竞争知识库，把多源信息进行合并、过滤、提取、分类，并将新的信息与数据库匹配，以更新数据库。     

科技创新型企业的研发强度对IPO定价效率的影响研究

在注册制改革不断深化，科技创新推动经济高质量发展的背景下，本研究对科技创新型企业的IPO定价效率进行测算评估，重点分析承销商跟投意愿的中介作用机制。实证检验结果表明，注册制改革并没有提高一级市场IPO定价效率，研发强度与IPO定价效率存在显著的正向关系，承销商跟投意愿在二者之间发挥部分中介作用。本研究丰富了研发强度对IPO定价效率影响的经验研究，为资本市场的制度创新提供了借鉴，有助于促进科技创新的发展，推动实体经济的转型升级。