The Case Study of an Extended Diffusion of Substitution for Successive Generations of a Product with Norton Model

2012 ◽  
Vol 601 ◽  
pp. 542-546
Author(s):  
Jing Hui Yang ◽  
Wen Jing Wei
Keyword(s):  
Diffusion Model ◽  
Influence Coefficients ◽  
Successive Generations

Norton model is a diffusion model to use for a substitution for successive generations of a product. Successive generations of a product influence each other when they diffuse in the same market. In order to express this rules, we try to relax one of the hypothesis of Norton model ,and take the effects of last generations into account Norton model , and define the substitution influence coefficients, then construct the extended Norton model. The extend Norton model improves the explanation of Norton model, and can embody well the actual circumstance of a substitution for successive generations of products. In the end, we take the adoption and substitution for successive generations of the modes of connecting Internet in China as an example for the application of the extended Norton model, and get better results than the Norton model.

Variation Analysis of Non-Rigid Assembly Using FEM and Fractals

2004 ◽  
Author(s):  
Xiaoyun Liao ◽  
G. Gary Wang
Keyword(s):  
New Method ◽  
The Finite Element Method ◽  
Fractal Function ◽  
New Approach ◽  
Sheet Metal Parts ◽  
Final Assembly ◽  
Influence Coefficients ◽  
Dimensional Variation ◽  
Part Variation

Many studies on the assembly of non-rigid parts suggest that the part variation affects the assembly dimensional quality. However, little is known about how the detailed microstructure of part variation influences the assembly dimensional quality. In this paper, a new method based on the finite element method (FEM) and fractal geometry is proposed to explore the influence of the part variation microstructure on the assembly dimensional variation. In the new method, a special fractal function, the Weierstrass-Mandelbrot (W-M) function, is used to extract and represent the characteristics of the part variation microstructure. FEM is applied to analyze the deformation of non-rigid parts by integrating the part variation microstructure. The contribution of the detailed part variation to the final assembly deformation is obtained by the influence coefficients method. The proposed method is implemented by using commercial software tools, ANSYS and Matlab. The proposed method is illustrated through a case study on an assembly of two flat sheet metal parts. This new approach should benefit high precision assemblies.

Effect of Sector Mode Shape Variation on the Aerodynamic Stability of a Low-Pressure Turbine Sectored Vane

2003 ◽  
Author(s):  
Olga V. Chernysheva ◽  
Torsten H. Fransson ◽  
Robert E. Kielb ◽  
John Barter
Keyword(s):  
Turbine Blades ◽  
Low Pressure ◽  
Mode Shapes ◽  
Two Dimensional ◽  
Shape Variation ◽  
Aerodynamic Stability ◽  
Flow Solver ◽  
Low Pressure Turbine ◽  
Influence Coefficients

The paper presents a method to investigate the flutter appearance in a cascade, where blades are connected together in a number of identical sectors. The key parameters of the method are vibration amplitudes and mode shapes of the blades belonging to the same sector. The aerodynamic response from a sectored vane cascade is calculated based on the aerodynamic work influence coefficients of freestanding blades performed with two-dimensional inviscid linearized flow solver. A case study based upon the presented methodology shows that, despite stabilizing effect of tying blades together into sectors, a sectored vane consisting of six low-pressure turbine blades vibrating with real single modes, and identical amplitudes can be unstable at realistic design conditions.

scholarly journals A Diffusion Model for Natural Gas Vehicle: A Case study in Japan

2015 ◽  
Vol 75 ◽  
pp. 2987-2992 ◽  
Author(s):  
Yue Zhu ◽  
Koji Tokimatsu ◽  
Mitsutaka Matsumoto
Keyword(s):  
Natural Gas ◽  
Diffusion Model ◽  
Natural Gas Vehicle

Patterns of Succession and Continuity in Family-Owned Businesses: Study of an Ethnic Community

2001 ◽  
Vol 14 (2) ◽  
pp. 105-121 ◽  
Author(s):  
Philip J. Perricone ◽  
John R. Earle ◽  
Ian M. Taplin
Keyword(s):  
Small Firms ◽  
Southeastern United States ◽  
Ethnic Enclave ◽  
Economic Changes ◽  
Cultural Systems ◽  
The Family ◽  
New Ideas ◽  
Successive Generations ◽  
Successful Transfer

This paper examines ways in which patriarchalqfamilistic cultural systems condition responses to the kinds of social and economic changes that challenge family-owned businesses. Using a case study of an ethnic enclave in the southeastern United States, the paper looks at intergenerational succession, paying particular attention to how small firms manage to transfer control within the family. Key to successful transfer is the presence of trust and the utilization of social capital as well as the ability of successive generations to acquire skills that enable them to identify new market niches. The manuscript also discusses how firms manage conflict between old and new ideas, develop informal mechanisms for incorporating new ideas, and maintain the flexibility necessary for market survival.

scholarly journals Bass Diffusion Model Adaptation Considering Public Policies to Improve Electric Vehicle Sales—A Brazilian Case Study

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5435
Author(s):  
Leonardo Bitencourt ◽  
Tiago Abud ◽  
Rachel Santos ◽  
Bruno Borba
Keyword(s):  
Diffusion Model ◽  
Electric Vehicles ◽  
Public Policies ◽  
Social Indicators ◽  
Passenger Cars ◽  
Major Barrier ◽  
Bass Diffusion ◽  
The Impact ◽  
Bass Diffusion Model

The global fleet of electric vehicles (EV) has been rising in recent years, and public policies can play an important role in this scene. The objective of this work is to evaluate the impact of public policies in the diffusion of EVs in Brazil, based on Beck’s adaptation for the Bass diffusion model. This modification on the Bass model allows the estimation of EV diffusion, taking into account the direct and indirect economic influence of the main EV incentive instruments used worldwide. In addition, this work conducts a forecast of the total passenger cars in Brazil through a regression model, considering macroeconomic and social indicators. The results indicate that EV high prices may still be the major barrier for EV diffusion in Brazil over the studied horizon, keeping them inaccessible to the majority of the population. Therefore, policies aimed at subsidizing EVs may be more effective in stimulating EV sales.

Sign in / Sign up

Export Citation Format

Share Document