Notice of Retraction: The Research of Product Marketing System Model and Simulation Based on Systems Dynamics

2009 ◽  
Author(s):  
Jingdong Chen ◽  
Qisong Zhu
Keyword(s):  
System Model ◽  
Systems Dynamics ◽  
Marketing System ◽  
Model And Simulation ◽  
Simulation Based ◽  
Product Marketing

Tonsil tie simulator

2013 ◽  
Vol 127 (9) ◽  
pp. 924-926 ◽  
Author(s):  
J Duodu ◽  
T H J Lesser
Keyword(s):  
Blood Vessels ◽  
Low Pressure ◽  
Realistic Model ◽  
Surgical Skills ◽  
Operating Theatre ◽  
Active Bleeding ◽  
Surgical Trainee ◽  
Model And Simulation ◽  
Simulation Based ◽  
Training Opportunities

AbstractBackground:The surgical trainee has to acquire surgical skills in an era of reduced training hours and greater demands for efficient use of operating theatre time. Many surgical specialties are utilising model and simulation-based training to provide safe, low-pressure training opportunities for today's trainee.Method and results:This paper describes a simple, relatively inexpensive tonsillectomy model that enables the practice of tonsil removal and ligation of bleeding vessels. The model is beneficial for the patient, trainee and trainer.Conclusion:The pseudo mouth and active bleeding components of this model provide the trainee with a relatively inexpensive, realistic model with which to gain confidence and competence in the skill of ligating tonsillar blood vessels with a tonsil tie.

Development of a Software Tool for Calculating Transmission Line Parameters and Updating Related Databases

2014 ◽  
Vol 15 (6) ◽  
pp. 513-526
Author(s):  
Wanjing Xiu ◽  
Yuan Liao
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Transmission Lines ◽  
Software Tool ◽  
Power Grids ◽  
System Model ◽  
Software Packages ◽  
Essential Components ◽  
Simulation Based ◽  
Electric Power Grids

Abstract Transmission lines are essential components of electric power grids. Diverse power system applications and simulation based studies require transmission line parameters including series resistance, reactance, and shunt susceptance, and accurate parameters are pivotal in ensuring the accuracy of analyses and reliable system operation. Commercial software packages for performing power system studies usually have their own databases that store the power system model including line parameters. When there is a physical system model change, the corresponding component in the database of the software packages will need to be modified. Manually updating line parameters are tedious and error-prone. This paper proposes a solution for streamlining the calculation of line parameters and updating of their values in respective software databases. The algorithms used for calculating the values of line parameters are described. The software developed for implementing the solution is described, and typical results are presented. The proposed solution is developed for a utility and has a potential to be put into use by other utilities.

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