Secure, Robust and Adaptive Echo-Based Information Hiding in Voice Communications for Equipment Maintenance in Marine Ships

2012 ◽  
Vol 490-495 ◽  
pp. 2738-2742
Author(s):  
Hu Chen
Keyword(s):  
Information Hiding ◽  
Critical Issue ◽  
Communication Link ◽  
Equipment Maintenance ◽  
Delay Constraints ◽  
Voice Communications ◽  
Echo Delay

The maintenance of equipments in marine ships is a critical issue, in which the security of robustness of the communications between the marine ships and the base present foremost importance. As the communication link confronts bandwidth and delay constraints, it is challengeable to design an appropriate scheme. In this paper, we propose an echo-based information hiding scheme for addressing this problem. The confidentiality and integrity of the maintenance communications can be guaranteed. The robustness of the communication indicates the resilience to artificial tampering. The interaction for maintenance guidance can provide associated text or images via voice communications. Our echo-based method utilizes the sound echo delay to hide the information in the voices. The simulation verified that the scheme is secure and robust.

On Girard

2016 ◽  
Vol 45 (3-4) ◽  
pp. 59-65
Author(s):  
Mark Juergensmeyer
Keyword(s):  
Driving Force ◽  
Critical Issue ◽  
Religious Violence ◽  
Symbolic Violence ◽  
Acting Out ◽  
Mimetic Desire ◽  
The World ◽  
Violent Acts

Much of what Freud and Girard have said about the function of symbolic violence in religion has been persuasive. Even if one questions, as I do, Girard’s idea that mimetic desire is the sole driving force behind symbols of religious violence, one can still agree that mimesis is a significant factor. One can also agree with the theme that Girard borrows from Freud, that the ritualized acting out of violent acts plays a role in displacing feelings of aggression, thereby allowing the world to be a more peaceful place in which to live. But the critical issue remains as to whether sacrifice should be regarded as the context for viewing all other forms of religious violence, as Girard and Freud have contended.

Patient satisfaction and comfort after a full-arch immediate loaded prosthesis

2020 ◽  
Author(s):  
Elena Dellepiane ◽  
Francesco Pera ◽  
Paola Zunino ◽  
Maria Grazia Mugno ◽  
Paolo Pesce ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Oral Health ◽  
Intermediate Phase ◽  
Critical Issue ◽  
Health Impact ◽  
Immediate Loading ◽  
Oral Rehabilitation ◽  
Masticatory Ability ◽  
Chewing Ability

The aim of this study was to assess oral health related quality of life (OHRQoL) of patients before, during and after completion of implant-supported full-arch immediate loading rehabilitation according to the Columbus Bridge Protocol (CBP). 25 patients with compromised dentition were rehabilitated according to the CBP and were assessed for OHRQoL using 4 questionnaires specifically realized for this study and inspired to the OHIP (Oral Health Impact Profile) questionnaire. Patients assessed themselves before surgery, during the healing period (1 week and 2 months after surgery) and after definitive prosthodontic treatment (4 months after surgery). The questionnaires specifically investigated patients’ pain, confort, home oral hygiene habits, satisfaction related to esthetics, masticatory ability, phonetics and general satisfaction toward the treatment.Patients reported an improvement of OHRQoL after full-arch immediate loading rehabilitation. A statistically significant improvement in aesthetic and chewing ability was found. After 4 months 92% of the patients did not feel tense with their smile, 96% did not show problems to relate with other people or smiling, 92% did not show difficulty to eat some foods. Phonetics was found to be a critical issue, especially in the intermediate phase of healing. One week after surgery the percentage of patients who was very satisfied with phonetics slightly decreased from 48% to 36%. The assessment of patients' OHRQoL related to full-arch immediate loading implant therapy exhibited a significant improvement of their quality of life. The questionnaires herein presented could be an effective tool to evaluate patients' reaction to oral rehabilitation.

Tolerance and Cancer: A Critical Issue in Tumor Immunology

1996 ◽  
Vol 7 (5-6) ◽  
pp. 433-456 ◽  
Author(s):  
Eduardo M. Sotomayor ◽  
Ivan Borrello ◽  
Hyam I. Levitsky
Keyword(s):  
Tumor Immunology ◽  
Critical Issue
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