The Role of Flight Dynamic Modeling in Helicopter Certification

1978 ◽  
Author(s):  
K. C. Hansen ◽  
G. Mulcahy
Keyword(s):  
1976 ◽  
Vol 6 (2) ◽  
pp. 77-80 ◽  
Author(s):  
L. E. Addison ◽  
J.W. Litchfield ◽  
J. V. Hansen

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 12
Author(s):  
Himanshu Jain ◽  
Bilal Ahmad Bhatti ◽  
Tianying Wu ◽  
Barry Mather ◽  
Robert Broadwater

Integrated transmission-and-distribution (T&D) modeling is a new and developing method for simulating power systems. Interest in integrated T&D modeling is driven by the changes taking place in power systems worldwide that are resulting in more decentralized power systems with increasingly high levels of distributed energy resources. Additionally, the increasing role of the hitherto passive energy consumer in the management and operation of power systems requires more capable and detailed integrated T&D modeling to understand the interactions between T&D systems. Although integrated T&D modeling has not yet found widespread commercial application, its potential for changing the decades-old power system modeling approaches has led to several research efforts in the last few years that tried to (i) develop algorithms and software for steady-state and dynamic modeling of power systems and (ii) demonstrate the advantages of this modeling approach compared with traditional, separated T&D system modeling. In this paper, we provide a review of integrated T&D modeling research efforts and the methods employed for steady-state and dynamic modeling of power systems. We also discuss our current research in integrated T&D modeling and the potential directions for future research. This paper should be useful for power systems researchers and industry members because it will provide them with a critical summary of current research efforts and the potential topics where research efforts are needed to further advance and demonstrate the utility of integrated T&D modeling.


2013 ◽  
Vol 37 ◽  
pp. 3733-3741 ◽  
Author(s):  
C.D. Gorecki ◽  
G. Liu ◽  
T.P. Bailey ◽  
J.A. Sorensen ◽  
R.J. Klapperich ◽  
...  
Keyword(s):  

2016 ◽  
Vol 27 (1) ◽  
pp. 167-187 ◽  
Author(s):  
Yamen Koubaa

Purpose – The purpose of this paper is to highlight the strategic role of purchasing and model its transformation process based on a case study of a military firm. Design/methodology/approach – The paper reviews the existing literature to highlight the strategic role of purchasing and put forward the transformations the function is undertaking. The model system dynamic approach is then detailed and applied to model the transformation of the purchasing function of a military firm. The modeling software Analytica is then used to run the model and get to results. Findings – The shift of purchasing toward a more strategic function is complex and multidimensional. Implementing these transformations requires flexible designing approaches such as the system dynamic modeling that incorporates both quantitative and qualitative variables to model the function’s changes. The paper details the methodology of applying the system dynamic approach. It recommends a new structure of the purchasing function as well as new and upgraded indicators of purchasing performance and suppliers’ management. Research limitations/implications – A single-case study research. Even though, the objective is not to generalize the findings but to enrich the existing literature as regard the system dynamic modeling in a specific domain, the one-case research setting can be seen as a limitation against generalizeable findings. Practical implications – A clear step-by-step action plan of conducting the transformation of the purchasing function using the system dynamic modeling approach. The paper gives ways to upgrade existing measures of purchasing and policies of suppliers’ management. Originality/value – The application of the system dynamic modeling approach to the specific domain of military purchasing.


2021 ◽  
Vol 44 (4) ◽  
pp. 855-874
Author(s):  
Artin Hatzikioseyian ◽  
Susma Bhattarai ◽  
Chiara Cassarini ◽  
Giovanni Esposito ◽  
Piet N. L. Lens

2013 ◽  
Vol 2013 (4) ◽  
pp. 281-283
Author(s):  
D. Houweling ◽  
Bruce Johnson ◽  
Tim Constantine
Keyword(s):  

Author(s):  
Jose Miguel Abito ◽  
David Besanko ◽  
Daniel Diermeier

This chapter summarizes each preceding chapter and then offers lessons for scholars and practitioners. Scholars should note the value of dynamic modeling in understanding interactions between activists and firms in the realm of private politics. Activists and firms can use the insights of the model to approach corporate campaigns more strategically. For example, for activists, the framework suggests that efforts aimed at hurting the reputations of firms can do more than serve an ideological aim at making companies look bad, or as a device to threaten harm. Activists can play the role of private regulators when effective public regulation is missing. For leaders of firms, the analysis highlights that corporate social responsibility and other initiatives can serve to enhance a firm’s reputation, but they can also be viewed as a form of risk management in the face of activist pressures that can potentially harm reputation.


Author(s):  
M. Fera ◽  
F. Fruggiero ◽  
A. Lambiase ◽  
R. Macchiaroli ◽  
S. Miranda

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