Iterative adaptation for mobile clients using existing APIs

2005 ◽  
Vol 16 (10) ◽  
pp. 966-981 ◽  
Author(s):  
E. de Lara ◽  
Y. Chopra ◽  
R. Kumar ◽  
N. Vaghela ◽  
D.S. Wallach ◽  
...  
Author(s):  
Dan Tudor Zaharie ◽  
Andrew T.M. Phillips

This study presents the development of a number of finite element (FE) models of the pelvis using different continuum and structural modelling approaches. Four FE models were developed using different modelling approaches: continuum isotropic, continuum orthotropic, hybrid isotropic and hybrid orthotropic. The models were subjected to an iterative adaptation process based on the Mechanostat principle. Each model was adapted to a number of common daily living activities (walking, stair ascent, stair descent, sit-to-stand and stand-to-sit) by applying onto it joint and muscle loads derived using a musculoskeletal modelling framework. The resulting models, along with a structural model previously developed by the authors, were compared visually in terms of bone architecture, and their response to a single load case was compared to a continuum FE model derived from CT imaging data. The main findings of this study were that the continuum orthotropic model was the closest to the CT derived model in terms of load response albeit having less total bone volume, suggesting that the role of material directionality in influencing the maximum orthotropic Young's modulus should be included in continuum bone adaptation models. In addition, the hybrid models, where trabecular and cortical bone were distinguished, had similar outcomes, suggesting that the approach to modelling trabecular bone is less influential when the cortex is modelled separately.


2010 ◽  
Vol 1 (1) ◽  
pp. 79-94 ◽  
Author(s):  
Janne Lindqvist ◽  
Essi Vehmersalo ◽  
Miika Komu ◽  
Jukka Manner

Firewalls are an essential component of the Internet and enterprise network security policy enforcement today. The configurations of enterprise firewalls are typically rather static. Even if client’s IP addresses can be dynamically added to the packet filtering rules, the services allowed through the firewall are commonly still fixed. In this paper, we present a transparent firewall configuration solution based on mobile cryptographic identifiers of Host Identity Protocol (HIP). HIP allows a client to protect the data transfer with IPsec ESP, and supports dynamic address changes for mobile clients. The HIP-based firewall learns the identity of a client when it communicates with the server over HIP. The firewall configures the necessary rules based on HIP control messages passing through the firewall. The solution is secure and flexible, and introduces only minimal latency to the initial HIP connection establishment.


Author(s):  
Claudiu Cobârzan ◽  
Marco A. Hudelist ◽  
Manfred Del Fabro

Author(s):  
KwangJin Park ◽  
MoonBae Song ◽  
Ki-Sik Kong ◽  
Chong-Sun Hwang ◽  
Kwang-Sik Chung ◽  
...  

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