Research on 3D Modeling and Virtual Assembly of Quayside Container Crane

2012 ◽  
Vol 472-475 ◽  
pp. 2179-2182
Author(s):  
Wei Yan ◽  
Jing Shuai Liu ◽  
Hou Jun Lu

As to the problem that the assembly cycle and costs of quayside container crane always exceeds 40% of the entire production cycle and costs, improving the assembly efficiency becomes an important link to enhance the competence of port machinery manufacturing enterprises. In the product assembling cycle, virtual assembly can help to improve assembly quality and reduce the cost. Based on the physical structure of 45t quayside container crane, 3D components model were developed, the assembly hierarchy and modeling process were provided. The simulation analysis of assembly sequence was taken based on the CATIA DMU platform and virtual assembly animation was generated. The assembly interference detection results were analyzed to verify the part assembling ability, the whole disassembly and assembly process was displayed, which can help the assembly workers making visual analysis of fitting operation rationality.

2021 ◽  
pp. 1-12
Author(s):  
Zou Xiaohong ◽  
Chen Jinlong ◽  
Gao Shuanping

The shared supply chain model has provided new ideas for solving contradictions between supply and demand for large-scale standardized production by manufacturers and personalized demands of consumers. On the basis of a platform network effect perspective, this study constructs an evolutionary game model of value co-creation behavior for a shared supply chain platform and manufacturers, analyzes their evolutionary stable strategies, and uses numerical simulation analysis to further verify the model. The results revealed that the boundary condition for manufacturers to participate in value co-creation on a shared supply chain platform is that the net production cost of the manufacturers’ participation in the platform value co-creation must be less than that of nonparticipation. In addition, the boundary condition for the shared supply chain platform to actively participate in value co-creation is that the cost of the shared supply chain platform for active participation in value co-creation must be less than that of passive participation. Moreover, value co-creation behavior on the shared supply chain platform is a dynamic game interaction process between players with different benefit perceptions. Finally, the costs and benefits generated by the network effect can affect value co-creation on shared supply chain platforms.


2022 ◽  
Vol 9 ◽  
Author(s):  
Fuqiang Wang ◽  
Huimin Li ◽  
Yongchao Cao ◽  
Chengyi Zhang ◽  
Yunlong Ran

Knowledge sharing (KS) in the green supply chain (GSC) is jointly determined by the KS efforts of suppliers and manufacturers. This study uses the differential game method to explore the dynamic strategy of KS and the benefits of emission reduction in the process of low carbon (LC) technology in the GSC. The optimal trajectory of the knowledge stock and emission reduction benefits of suppliers and manufacturers under different strategies are obtained. The validity of the model and the results are verified by numerical simulation analysis, and the sensitivity analysis of the main parameters in the case of collaborative sharing is carried out. The results show that in the case of centralized decision-making, the KS efforts of suppliers and manufacturers are the highest, and the knowledge stock and emission reduction benefits of GSC are also the best. The cost-sharing mechanism can realize the Pareto improvement of GSC’s knowledge stock and emission reduction benefits, but the cost-sharing mechanism can only increase the supplier’s KS effort level. In addition, this study found that the price of carbon trading and the rate of knowledge decay have a significant impact on KS. The study provides a theoretical basis for promoting KS in the GSC and LC technology innovation.


2013 ◽  
Vol 364 ◽  
pp. 470-473
Author(s):  
Ming Yue Yue ◽  
Yi Dan Zhou

With the rapid development of machinery manufacturing industry, multi variety and small batch production has gradually become one of the main means of manufacturing enterprises. On the basis of describing the characteristics and meaning of multi variety and small batch production, this article summarizes its domestic and international situation of machinery process theory, optimization and evaluation methods, presents several methods of mathematical description and model for multi variety and small batch production and finally summarize the trends of matching problem between the processing technology and production system.


2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Jian Feng ◽  
Bin Liu

Academic research pertaining to the marketing of film industry has identified advertising, film-making, and star power as the important factors influencing a movie’s market performance. Prior research, however, has not investigated the joint influences of these factors. The current study has extended previous research by analyzing the investment decision of studios or investors. In order to analyze the optimal film investment decision in advertising, film-making, and stars power, this paper develops a goodwill model and system dynamic (SD) model, which allow us to disentangle the effects of advertising, film-making, and star power on film market performance. The results show that the film producer should increasingly lay emphasis on investing in advertising to absorb moviegoers’ attention. Then the film producer should focus on investing in film-making when film quality has a great impact on the movie's reputation and audience's viewing decision. Furthermore, the film producer should pay more attention to the higher cost-performance stars who have more reasonable remuneration, better acting skills, and bigger box-office guarantee. Moreover, the numerical analysis reveals that rational audience contribute more than fans to a movie's box-office and bankable stars contribute more than high-profile stars to a movie's returns. Through SD simulation analysis, the film series yields higher profits than new theme movies although the cost of investment is the same.


1973 ◽  
Vol 5 (2) ◽  
pp. 185-193 ◽  
Author(s):  
Paul D. Spillers ◽  
Joseph Havlicek

This country is currently faced with an ever growing solid waste problem. A significant amount of total solid waste may be traced to origins in the packaging industry. Various policies aimed at rectifying this problem have been proposed. One policy alternative that is currently being given consideration is taxation of a product based upon the amount and type of packaging waste associated with that product. Taxation is believed to be a policy tool that could be used to internalize the cost of collection and disposal of each product's packaging waste. In effect, those that generate solid wastes would pay. The effects of such taxation implementation on various economic phenomena are unknown, but of critical importance to its feasibility.


Author(s):  
Stefan Dierkes ◽  
Ulrich Schäfer

Abstract Corporate valuation often relies on the assumption of a constant and homogenous growth rate. However, large firms frequently (re)balance their activities by diverting cash flows from some business units to fund investments in other units. We develop a value driver model of terminal value for a firm with two units. The model relaxes common assumptions and allows for cross-unit differences in the return on invested capital. We consider intra-unit and cross-unit investments and show their implications for firm value and the long-term development of key accounting variables. Our results help characterize business unit strategies that can be reconciled with popular firm strategies such as the constant payout and constant growth strategies. We find that popular valuation methods that assume both constant payout ratios and constant growth rates (e.g., Gordon and Shapiro, Manage Sci 3:102–110, 1956) constitute a restrictive special case of our model and should only be applied to firms with homogenous business units. We use a simulation analysis to compare our results with alternative valuation models and to illustrate the economic relevance of our findings. The simulation shows that an accurate depiction of business unit strategy is particularly useful if firms plan large-scale cross-unit investments into business units with high returns and if the cost of capital is low.


2013 ◽  
Vol 455 ◽  
pp. 615-618
Author(s):  
Ling Lv ◽  
Yu Tao Song ◽  
Sheng Fang Zhang

The level of an enterprises process management related to its existence and development tightly, in order to evaluate it accurately, the evaluation index system was presented, which was formed by 10 first level indexes and 39 second level indexes, in which the latter is the meticulous and materialization of the former. The methods of evaluation by total marks, weighting comprehensive evaluation on multi-index system and fuzzy comprehensive evaluation were applied to the process management. Compared with the other two ways, the fuzzy comprehensive evaluation is more accurate and comprehensive since it settle the quantification of the nature indexes during the analysis process, and it also solve the multi-factors evaluation who have different unit.


Author(s):  
Mark Faulkner

Scholars studying medieval manuscripts work in a variety of disciplines, from literary atudies to history to linguistics to art history to classics. Publications in all these areas use manuscripts and offer important findings about medieval manuscripts. In addition to its practice within different fields, much of the study of medieval manuscripts is strongly interdisciplinary, using techniques native to the study of the medieval book like codicology and paleography, alongside text critical-methods originally developed in classics and refined there, in literary studies and in history, visual analysis pioneered in art history, and philological methods now found in literary studies and linguistics. Insofar as the study of medieval manuscripts has a unified goal, it is to describe and explain the production and use of manuscripts and the textual culture associated with them, generating primary data that assists in the writing of literary, cultural, and linguistic history. Given the breadth of the field, this Oxford Bibliographies entry must necessarily be selective. It focuses primarily on manuscripts of British and Irish literature in English (manuscripts of texts in Irish, Welsh, and other Celtic languages being specialist fields of study in their own right). As a consequence, the vast majority of the material listed is in English, though scholarship on medieval manuscripts is also published in French, Italian, and German, as well as other languages. After sections devoted to General Overviews, Reference Works, Textbooks, Anthologies, Bibliographies and Journals, the bibliography presents lists of Catalogues of Manuscripts and Facsimiles, which are two of the most important tools for medieval book historians. It finishes with lists of works relevant to the major subdisciplines of medieval book history, Codicology (the study of the physical structure of manuscripts); paleography, the study of Scripts used in those manuscripts; as well as studies of Scribal Practice and Manuscript Culture; and works concerned with Ownership and Provenance.


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