Modeling of the resilient supply chain system from a perspective of production design changes

Building an effective resilient supply chain system (RSCS) is critical and necessary to reduce the risk of supply chain disruptions in unexpected scenarios such as COVID-19 pandemic and trade wars. To overcome the impact of insufficient raw material supply on the supply chain in mass disruption scenarios, this study proposes a novel RSCS considering product design changes (PDC). An RSCS domain model is first developed from the perspective of PDC based on a general conceptual framework, i.e., function-context-behavior-principle-state-structure (FCBPSS), which can portray complex systems under unpredictable situations. Specifically, the interaction among the structure, state and behavior of the infrastructure system and substance system is captured, and then a quantitative analysis of the change impact process is presented to evaluate the resilience of both the product and supply chain. Next, a case study is conducted to demonstrate the PDC strategy and to validate the feasibility and effectiveness of the RSCS domain model. The results show that the restructured RSCS based on the proposed strategy and model can remedy the huge losses caused by the unavailability of raw materials.

A Process Simulation-Based Method for Engineering Change Management

Engineering change management is a special form of problem solving where many rules must be followed to satisfy the requirements of product changes.As engineering change has great influence on the cycle and the cost of product development,it is necessary to anticipate design changes(DCs)in advance and estimate the influence effectively.A process simulation-based method for engineering change management is proposed incorporating multiple assessment parameters.First,the change propagation model is established,which includes the formulation of change propagation influence,assessment score of DC solution.Then the optimization process of DC solution is introduced based on ant colony optimization(ACO),and an optimization algorithm is detailed to acquire the optimal DC solution automatically.Finally,a case study of belt conveyor platform is implemented to validate the proposed method.The results show that changed requirement of product can be satisfied by multiple DC solutions and the optimal one can be acquired according to the unique characteristics of each solution.

The Change of Designated Cities in China before and after 1949

The reform and opening-up of the economy has made a contribution to the rapid growthof designated cities in China over the last 17 years. It is worth while to note three new trends: the emergence of mega-urbanization regions; the rebuilding of a closer tie between the Chinese urban systemand the global one through the development of the global cities; and the polarized development in hinterlands and peripheries around advanced economic regions. However, the research literature onChinese urbanization in English has shown the scarcity of good databanks and the analysis results areincomplete. Using the most complete and latest data, this paper reviews the change of China’s designated cities before and after 1949. This paper also seeks to examine the various policies and explorethe underlying factors that have affected the growth of the new cities.

＂A multi-wear clothes＂ Research on the Functionality in Modem Women＇s dress

With the rapid development of science and technology, the increasingly serious environmental damage is alert to human beings. ＂Green＂, ＂green＂, ＂ecological＂, ＂protection＂ of the words are gradually flooding our daily life, environmental protection has become an urgent task of our people. This article mainly discusses the main direction of the green design of the clothing and the green design in the social environment. It emphasizes the application of the structural design in the costume design to meet the needs of the various groups. Through this small design point, People for the ecological and environmental protection of the reflection. In considering the surrounding factors of fashion design work, and the green clothing design is the most we continue to pursue the goal, to ensure that the basic functions of clothing itself, to ensure that clothing should be some diversity, detachable artistic effect.