Rectisol process is more efficient in comparison with other physical or chemical absorption methods for gas purification. To implement a real time simulation of Rectisol process, thermodynamic model and simulation str...Rectisol process is more efficient in comparison with other physical or chemical absorption methods for gas purification. To implement a real time simulation of Rectisol process, thermodynamic model and simulation strategy are needed. In this paper, a method of modified statistical associated fluid theory with perturbation theory is used to predict thermodynamic behavior of process. As Rectisol process is a highly heat-integrated process with many loops, a method of equation oriented strategy, sequential quadratic programming, is used as the solver and the process converges perfectly. Then analyses are conducted with this simulator.展开更多
Assembly is currently a very important element in the production process. We can also define it as the last stage in the production process. It greatly affects the quality of the product and especially the time needed...Assembly is currently a very important element in the production process. We can also define it as the last stage in the production process. It greatly affects the quality of the product and especially the time needed to make the final product. The presented article is a contribution to the improvement of methods in the field of technological design of the product in terms of assembly, resp. in the field of methodologies known as DFA, which in its entirety means Design of Assembly. The general objective of improving the assembly process is in most cases reducing the cost of the product. With the gradual development of the technologies coming into practice, companies are focusing mainly on improving the elements of assembled products of the assembly system. This state can be achieved, for example, by reducing the number of components, so the complexity and laboriousness of the assembly will be radically reduced. This in turn leads to a decrease in unit assembly costs. Proper assembly settings can help a company succeed in the competition and thus contribute to a stable position of the company in the market. The aim of the article is to find the other objective indicators of assembly quality evaluation.展开更多
Discussions on Marx＇s ＂Asiatic mode of production＂ are essentially about the relationship between the universal and the particularistic view of history. Marx adhered to the world history position, but in the course...Discussions on Marx＇s ＂Asiatic mode of production＂ are essentially about the relationship between the universal and the particularistic view of history. Marx adhered to the world history position, but in the course of formulating his theory of the Asiatic mode of production he moved from universal history to a particularistic view of history; whereas the shift from the ＂Russian path＂ and ＂Russian way＂ provided by the Russian revolution to Stalin＇s doctrine of the ＂five forms＂ of social development represented a return from particularistic to universal history. In developing a Chinese view of history, three elements cannot be overlooked： the Chinese pattern of historical development and China＇s present development experience; Marx＇s theory of social forms and his thoughts on Oriental society in his later years; and the ＂Russian path＂ and ＂systemic transformation＂ launched by the October Revolution.展开更多
基金Supported by the National Basic Research Program of China(2013CB733600)
文摘Rectisol process is more efficient in comparison with other physical or chemical absorption methods for gas purification. To implement a real time simulation of Rectisol process, thermodynamic model and simulation strategy are needed. In this paper, a method of modified statistical associated fluid theory with perturbation theory is used to predict thermodynamic behavior of process. As Rectisol process is a highly heat-integrated process with many loops, a method of equation oriented strategy, sequential quadratic programming, is used as the solver and the process converges perfectly. Then analyses are conducted with this simulator.
文摘Assembly is currently a very important element in the production process. We can also define it as the last stage in the production process. It greatly affects the quality of the product and especially the time needed to make the final product. The presented article is a contribution to the improvement of methods in the field of technological design of the product in terms of assembly, resp. in the field of methodologies known as DFA, which in its entirety means Design of Assembly. The general objective of improving the assembly process is in most cases reducing the cost of the product. With the gradual development of the technologies coming into practice, companies are focusing mainly on improving the elements of assembled products of the assembly system. This state can be achieved, for example, by reducing the number of components, so the complexity and laboriousness of the assembly will be radically reduced. This in turn leads to a decrease in unit assembly costs. Proper assembly settings can help a company succeed in the competition and thus contribute to a stable position of the company in the market. The aim of the article is to find the other objective indicators of assembly quality evaluation.
文摘Discussions on Marx＇s ＂Asiatic mode of production＂ are essentially about the relationship between the universal and the particularistic view of history. Marx adhered to the world history position, but in the course of formulating his theory of the Asiatic mode of production he moved from universal history to a particularistic view of history; whereas the shift from the ＂Russian path＂ and ＂Russian way＂ provided by the Russian revolution to Stalin＇s doctrine of the ＂five forms＂ of social development represented a return from particularistic to universal history. In developing a Chinese view of history, three elements cannot be overlooked： the Chinese pattern of historical development and China＇s present development experience; Marx＇s theory of social forms and his thoughts on Oriental society in his later years; and the ＂Russian path＂ and ＂systemic transformation＂ launched by the October Revolution.
