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This paper studied the pricing and production decision problem in a one-manufacturer-one-retailer dual-channel supply chain under demand and production cost disruptions. It was assumed that the demand in each channel is linear in retail price and direct sale price. The impact of demand and production cost disruptions on the centralized and decentralized dual-channel supply chain's optimal pricing and production decisions was analyzed, respectively. By solving the Kuhn-Tucker conditions of the optimization problem, the dual-channel supply chain's optimal pricing and production decisions were obtained under different demand and production cost disruptions scenarios. It is found that the effects of demand and production cost disruptions interact with each other while the original production plan does not change. [ABSTRACT FROM AUTHOR]

Layout problem is regarding the study on the arrangement of the order and position of the objects according to the design requirements, while layout migration design is a new and efficient layout method based on the existing layout. In the automatic control system of rail transportation, the sensor layout of the auto gate plays an important role in the identification of human body and objects. In order to achieve the rapid design of auto gate for different geographical environments, firstly, sensors in auto gate layout are taken as the research object and broken down into various kinds of primitives, multiple primitive types are proposed, the topological-structure-based primitive migration transformation method is analyzed, and the crowd characteristics factors and the mathematical expression of the mechanical structure constraints are studied. Secondly, the primitive motions and interference analysis algorithm based on the bounding circle search is proposed, whose parameters can be adjusted according to the solution precision, and multi-objective normalization function is utilized to search for the optimum solution out of all the feasible solutions for each primitive. Finally, with the help of the visualization compile platform Visual Basic, the method is applied to the sensor layout design for the auto gate with eighteenpair sensors and fast sensor layout design of auto gate for different geographical environment is achieved. [ABSTRACT FROM AUTHOR]

Objective The aim of this study was to investigate a new procedure with reserving the ascending part of duodenum and using Y loop of jejunal interposition for bile and pancreatic internal drainage. Methods From April 2006 to June 2012, 5 patients complicated with pancreatic calculi and very early stage of distal common bile duct malignancy were performed pancreatoduodenectomy in our department, and their clinical data were retrospectively analyzed. Results The procedure of this operation was easy and simple compared with ordinary pancreatoduodenectomy. There were no pancreatic or bile leakage, massive hemorrhage of digestive tract and intraperitoneal abdominal infection happened post-operation. The average postoperative hospital stay was 22 days. All patients were followed up for 12 months, and the survival rate was 100% . Conclusion The modified pancreaticoduodenectomy with reserving the ascending part of duodenum and using Y loop of jejunal interposition anastomosis for internal drainage can decrease the occurrence of postoperative complications and increase the safety of pancreatoduodenectomy. [ABSTRACT FROM AUTHOR]