scholarly journals Cryptobiometrics for the Generation of Cancellable Symmetric and Asymmetric Ciphers with Perfect Secrecy

Mathematics ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1536 ◽  
Author(s):  
Vicente Jara-Vera ◽  
Carmen Sánchez-Ávila
Keyword(s):  
Practical Application ◽  
Equal Error Rate ◽  
Cryptographic Keys ◽  
Private And Public ◽  
Remarkable Result ◽  
Perfect Secrecy ◽  
Voice Biometrics ◽  
And Control ◽  
Perfect Substitution ◽  
Cryptographic Scheme

Security objectives are the triad of confidentiality, integrity, and authentication, which may be extended with availability, utility, and control. In order to achieve these goals, cryptobiometrics is essential. It is desirable that a number of characteristics are further met, such as cancellation, irrevocability, unlinkability, irreversibility, variability, reliability, and biometric bit-length. To this end, we designed a cryptobiometrics system featuring the above-mentioned characteristics, in order to generate cryptographic keys and the rest of the elements of cryptographic schemes—both symmetric and asymmetric—from a biometric pattern or template, no matter the origin (i.e., face, fingerprint, voice, gait, behaviour, and so on). This system uses perfect substitution and transposition encryption, showing that there exist two systems with these features, not just one (i.e., the Vernam substitution cipher). We offer a practical application using voice biometrics by means of the Welch periodogram, in which we achieved the remarkable result of an equal error rate of (0.0631, 0.9361). Furthermore, by means of a constructed template, we were able to generate the prime value which specifies the elliptic curve describing all other data of the cryptographic scheme, including the private and public key, as well as the symmetric AES key shared between the templates of two users.

scholarly journals Between liberty and control: citizens’ attitudes towards Romanian state surveillance

2021 ◽  
Vol 19 (1) ◽  
pp. 183-205
Author(s):  
Paul Tap
Keyword(s):  
Demographic Factors ◽  
Public Institutions ◽  
Individual Level ◽  
Level Data ◽  
State Surveillance ◽  
Private And Public ◽  
Original Survey ◽  
Socio Demographic Factors ◽  
And Control ◽  
Source Of Information

Surveillance was extensively analyzed in the literature from multiple standpoints. Some studies looked to the temporal development of surveillance, while others analyzed the traditional theories that influenced many of the contemporary surveillance studies. All these studies define surveillance as an activity that is ubiquitous and performed globally, by multiple private and public institutions, through the involvement of specific technologies. However, little attention was paid to the perceptions of citizens about surveillance. This article addresses this gap in the literature and analyses how state surveillance is perceived by the Romanian citizens according to the socio-demographic factors (i.e., age, education, income, gender and medium of residence). The aim of the study is to explain how socio-demographic factors influence the acceptance of state surveillance. It also controls for the left-right self-placement, and the use of Facebook as source of information. The statistical analysis uses individual level data from an original survey conducted between October-November 2020. The survey was completed by 1,140 respondents, and the article uses correlation and linear regression to analyze the data. The findings illustrate that the acceptance of state surveillance is influenced by the gender, level of education and medium of residence of the individuals. The age and income of the citizens have no effect on the acceptance of state surveillance.

scholarly journals Dom jako miejsce emocjonalne

2018 ◽  
Vol 62 (3) ◽  
pp. 191-208
Author(s):  
Małgorzata Kubacka
Keyword(s):  
Public Sphere ◽  
Everyday Life ◽  
Social Order ◽  
Social Conditions ◽  
Social Construct ◽  
Emotional Dimension ◽  
The Social ◽  
Emotional Work ◽  
Private And Public ◽  
And Control

The aim of this article is to show the home as an emotional place. The sphere of social conditions, which has been neglected until recently, can help explain emotion as a social construct. Many researchers have pointed to the emotional dimension of the experience of the home and living practices. A home is a complex place, a conglomerate of three aspects: material, symbolic, and relational. The experience of domesticity can be considered to have multiple aspects and to be variable. Taking emotions into account enables a fuller understanding of the duality of household practices, in connection with both their “function” and their role in creating, recreating, and changing the rules of the social order. In this sense, a home is located between the private and public sphere, emotional authenticity and emotional work, freedom and control, socialization and de-socialization, everyday life and celebration.

Energy Wave Transmission and Control Analysis in Force Reflection Teleoperation Based on Interconnected Power Line

2011 ◽  
Vol 58-60 ◽  
pp. 1306-1310
Author(s):  
Xiao Hui Xie ◽  
Cui Ma ◽  
Qiang Sun ◽  
Chang Jie Luo ◽  
Ru Xu Du
Keyword(s):  
Control Method ◽  
Power Line ◽  
System Structure ◽  
Communication Link ◽  
Control Analysis ◽  
Practical Application ◽  
New Type ◽  
Transfer Method ◽  
The Stability ◽  
And Control

Force-Reflected Telepresence Teleoperation system has been widely used. Generally, force and torque sensors are installed on the robot to realize haptic perception. Control commands and force-reflected information from the robot are transmitted by communication link, such as internet. However, this structure not only brings difficulties of installation and commissioning, but also reduces the system flexibility and makes control more difficult. And it is prone to interfered in microenvironment. This paper presents a new type of energy transfer method to achieve it by power line instead of internet between the Master-slave Manipulators. This method achieves the consistency of force-reflected without using sensors to measure the conditions. In practical application, it requires to design an energy managed controller to insure the stability and obtain precision in synchronization between the master part and slave part. This paper gives the theory, the system structure and control method of force telepresence teleoperation based on power line.

An Adding Mass Method for Stiffly Mechanical System Simulation and Applications to Construction Machinery

2001 ◽  
Author(s):  
Etsujiro Imanishi ◽  
Satoshi Yonezawa ◽  
Naoki Sugano ◽  
Eiko Hirooka ◽  
Takahiro Kobayashi
Keyword(s):  
Mechanical System ◽  
Dynamic Simulation ◽  
Hydraulic System ◽  
Piecewise Linear ◽  
Hydraulic Systems ◽  
Practical Application ◽  
Construction Machinery ◽  
Linear Elements ◽  
Improvement Method ◽  
And Control

Abstract A characteristic improvement method for dynamic simulation of a stiff mechanical system by adding mass is presented. Hydraulic systems with check valves and control valves on construction machinery exhibit piecewise-linear characteristics for hydraulic flow rate and spool stroke. The proposed improvement method involves no time delay in determining the mass by considering both eigenvalue distortion of the system and time response. This paper shows a practical application to the boom derricking system of a rough terrain crane, and demonstrates that this method is useful for dynamic simulation of hydraulic system including stiff piecewise-linear elements.

scholarly journals Note Concerning the Distribution Function of the Total Loss Excluding the Largest Individual Claims

1964 ◽  
Vol 3 (2) ◽  
pp. 132-143 ◽  
Author(s):  
Hans Ammeter
Keyword(s):  
Distribution Function ◽  
Extreme Values ◽  
Excess Risk ◽  
Total Loss ◽  
Mathematical Statistics ◽  
Practical Application ◽  
Remarkable Result ◽  
Accounting Period ◽  
Insurance Business

The theory of extreme values is a special branch of mathematical statistics and was mainly treated by E. J. Gumbel [4]). This theory has only been applied in a few cases to problems in the insurance business. The first practical application to insurance known to the author of the present paper is due to A. Thépaut who has invented a new reinsurance system called ECOMOR [5]. According to this system the reinsurer covers the excess risk for the m largest claims and the ceding company retains an amount equal to the (m + I) largest claim. The credit for having pointed out the importance of the theory of extreme values belongs to R. E. Beard [1]. Recently E. Franckx [3] has found a most remarkable result by disclosing the general form of the distribution for the largest claim occurring in a certain accounting period.The present paper starts from the consideration that not only is the distribution of major claims, which might be eliminated by means of reinsurance, of interest to an insurer but also the distribution of the remaining total loss after excluding the largest claims. The nature of this distribution is important not only in connection with stability and security, but also for statistical investigations of the observed claim ratio. The credibility of such an investigation might be greatly improved if a suitable number of major claims were excluded. To simplify matters, the present paper considers the case where only the largest claim is excluded.

scholarly journals First record of Cydalima perspectalis (Walker, 1859) (Lepidoptera: Crambidae) in Greece

2015 ◽  
Vol 8 (2) ◽  
pp. 66-72
Author(s):  
I. Strachinis ◽  
C. Kazilas ◽  
F. Karamaouna ◽  
N.E. Papanikolaou ◽  
G.K. Partsinevelos ◽  
...  
Keyword(s):  
Urban Environment ◽  
First Record ◽  
Control Measures ◽  
Public Gardens ◽  
Buxus Sempervirens ◽  
Private And Public ◽  
And Control

Summary The study concerns the first records for the presence of the box tree moth Cydalima perspectalis in Greece and subsequent infestations on ornamental box trees in urban environment. Adults of the pest were first spotted in six locations around the country from October 2013 until April 2015, when infestation was also detected (mid April). The pest was found infesting plants of Buxus sempervirens in several private and public gardens and parks in the urban environment of Kifissia, Attica. Possible introduction scenarios, as well as preventive and control measures are discussed.

Work Measurement, Identification and Control

2015 ◽  
Vol 1117 ◽  
pp. 303-306
Author(s):  
Dana Belakova ◽  
Inese Ziemele
Keyword(s):  
Practical Application ◽  
Work Safety ◽  
Pilot Projects ◽  
Labour Relations ◽  
Service Company ◽  
Work Measurement ◽  
Furniture Manufacturing ◽  
Manufacturing Company ◽  
And Control

The research has been conducted in the framework of the project financed by ESF “Practical application of labour relations and work safety normative acts in sectors and enterprises” implemented by the Employers’ Confederation of Latvia (LDDK) in cooperation with “DA Kompetentie Specialisti”, Ltd. The elaborated method of work measurement can be used in any sector. In the framework of the study, two pilot projects have been implemented – at a furniture manufacturing company and a cleaning service company.

The Application of the Tension Online Detection and Control Technology

2012 ◽  
Vol 503-504 ◽  
pp. 171-173
Author(s):  
Xian Fang Wang ◽  
Xue Qin Ren ◽  
Wen Ya Li
Keyword(s):  
Optical Fiber ◽  
Production Process ◽  
New Technology ◽  
Tension Control ◽  
Control Technology ◽  
Practical Application ◽  
Online Detection ◽  
Fancy Yarns ◽  
Fiber Winding ◽  
And Control

The main contents of this article are the practical application of a new technology about the tension online detection and control, including the tension control in the production process and the winding process. For example, the optical fiber winding, the winding of roving, the winding of loose cone frame, special fancy yarns winding and so on. The new function is so strong that can be used in many aspects, which can meet the special production requirements and improve the product quality.

scholarly journals Marks: A New Interval Tool for Uncertainty, Vagueness and Indiscernibility

Mathematics ◽  
2021 ◽  
Vol 9 (17) ◽  
pp. 2116
Author(s):  
Miguel A. Sainz ◽  
Remei Calm ◽  
Lambert Jorba ◽  
Ivan Contreras ◽  
Josep Vehi
Keyword(s):  
Dynamical Systems ◽  
Measurement Errors ◽  
Practical Application ◽  
Modal Interval ◽  
The Difference ◽  
Systems Simulation ◽  
And Control ◽  
Physical Quantities ◽  
Successive Calculation

The system of marks created by Dr. Ernest Gardenyes and Dr. Lambert Jorba was first published as a doctoral thesis in 2003 and then as a chapter in the book Modal Interval Analysis in 2014. Marks are presented as a tool to deal with uncertainties in physical quantities from measurements or calculations. When working with iterative processes, the slow convergence or the high number of simulation steps means that measurement errors and successive calculation errors can lead to a lack of significance in the results. In the system of marks, the validity of any computation results is explicit in their calculation. Thus, the mark acts as a safeguard, warning of such situations. Despite the obvious contribution that marks can make in the simulation, identification, and control of dynamical systems, some improvements are necessary for their practical application. This paper aims to present these improvements. In particular, a new, more efficient characterization of the difference operator and a new implementation of the marks library is presented. Examples in dynamical systems simulation, fault detection and control are also included to exemplify the practical use of the marks.

scholarly journals Model of students’ sport-oriented physical education with application of information technologies

2015 ◽  
Vol 19 (3) ◽  
pp. 29-37 ◽  
Author(s):  
O.M. Olkhovy ◽  
Y.M. Petrenko ◽  
V.A. Temchenko ◽  
A.N. Timchenko
Keyword(s):  
Physical Education ◽  
Information Technologies ◽  
Structural Model ◽  
Structural Components ◽  
Practical Application ◽  
Healthy Life ◽  
Healthy Life Style ◽  
Research Students ◽  
And Control ◽  
Working Out

Purpose: working out and practical application of approaches to perfection of physical education system’s functioning. Material: in the research students (boys- n=92, girls- n=45) of 18-20 years old took part. Results: structural model of students’ sport-oriented physical education with application of information technologies has been formed. The main purpose of such model’s creation was cultivation of students’ demand in physical functioning and formation of healthy life style in students’ environment. The model of the process includes orienting, executive and control components. In this model groups of commonly accepted physical education and sport-oriented groups function. Conclusions: Main structural components of the created model have been determined: conceptual, motivation-active, resulting.

Sign in / Sign up

Export Citation Format

Share Document