scholarly journals Whole-process modeling of titanium disc forming for gradient distributions of temperature and deformation

Author(s):  
Hongwei LI ◽  
Bin CHEN ◽  
Mei ZHAN ◽  
Jing HE ◽  
Xinxin SUN ◽  
...  
Author(s):  
Shimin Deng ◽  
Rory Hynes

In this paper, SNG production technologies are investigated and summarized. A new SNG production process has been developed. It has advantages in performance, cost and operability. The performance of the new process is analyzed and compared with two existing processes — one process based on hydrogasification and one conventional SNG production process. Based on process modeling, exergy analysis is carried out to identify the specific loss of each sub-process. The thermodynamic features of the new process are investigated to show the trend of the parameters of the hybrid gasifier and the whole process. A concept of critical conversion rate is identified and defined. Key parameters of hybrid gasifier and thermal performance of the system are examined and presented. Besides thermal performance, other issues related to operation and cost are discussed.


2015 ◽  
Vol 141 (2) ◽  
pp. 04014069 ◽  
Author(s):  
Zhixian Cao ◽  
Ji Li ◽  
Gareth Pender ◽  
Qingquan Liu

2014 ◽  
Vol 532 ◽  
pp. 644-649 ◽  
Author(s):  
Da Wei Zhang ◽  
Rui Yuan Zhang ◽  
Hong Wei Ma ◽  
Xian Gang Cao

In a view of the problem of traditional workflow in the manufacturing process management, such as low utilization, complex modeling and difficulty of combing system, modeling based on the commonness of manufacturing enterprise production process, in combination with Activiti workflow engine characteristics, to achieve the goal of integrate process model into system quickly. The whole process, including modeling, packaging, deployment, test validation, is easy to be modified and published quickly. Experimental results show that the Activiti modeling method has the characteristics of flexible, simple and diverse, greatly improvement of the utilization of production process model and the efficiency of modeling.


2013 ◽  
Vol 798-799 ◽  
pp. 916-919
Author(s):  
Jiao Zhang ◽  
Jiu Lei Jiang ◽  
Jun Jian Liu

Pi calculus is used to describe the process of dynamic structure and interprocess communication in concurrent calculation model. For Business To Business (B2B) e-commerce system business process, use business process modeling notation (BPMN) of the business process for unified description, complete business process conceptual model design, the application of Pi calculus describes the whole process of business process, give a consistency proof to our model,and the model application Pi calculus validation tool Mobility Workbench (MWB) complete simulation test. To ensure that the business messages transfer and the validity of the model even greatly reduce the project investment risk.


2019 ◽  
Vol 2 (5) ◽  
Author(s):  
Tong Wang

The compaction quality of the subgrade is directly related to the service life of the road. Effective control of the subgrade construction process is the key to ensuring the compaction quality of the subgrade. Therefore, real-time, comprehensive, rapid and accurate prediction of construction compaction quality through informatization detection method is an important guarantee for speeding up construction progress and ensuring subgrade compaction quality. Based on the function of the system, this paper puts forward the principle of system development and the development mode used in system development, and displays the development system in real-time to achieve the whole process control of subgrade construction quality.


2014 ◽  
Vol 3 ◽  
pp. 183-195
Author(s):  
Elena Macevičiūtė

The article deals with the requirements and needs for long-term digital preservation in different areas of scholarly work. The concept of long-term digital preservation is introduced by comparing it to digitization and archiving concepts and defined with the emphasis on dynamic activity within a certain time line. The structure of digital preservation is presented with regard to the elements of the activity as understood in Activity Theory. The life-cycle of digitization processes forms the basis of the main processing of preserved data in preservation archival system.The author draws on the differences between humanities and social sciences on one hand and natural and technological science on the other. The empirical data characterizing the needs for digital preservation within different areas of scholarship are presented and show the difference in approaches to long-term digital preservation, as well as differences in selecting the items and implementing the projects of digital preservation. Institutions and organizations can also develop different understanding of preservation requirements for digital documents and other objects.The final part of the paper is devoted to some general problems pertaining to the longterm digital preservation with the emphasis of the responsibility for the whole process of safe-guarding the cultural and scholarly heritage for the re-use of the posterior generations. It is suggested that the longevity of the libraries in comparison with much shorter life-span of private companies strengthens the claim of memory institutions to playing the central role in the long-term digital preservation.


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