University of Bordj Bou Arreridj
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- كلية الحقوق والعلوم السياسية
- كلية الآداب واللغات
- كلية الرياضيات و الأعلام الآلي
- كلية علوم الطبيعة و الحياة و علوم الأرض و الكون
- كلية العلوم الاقتصادية والتجارية وعلوم التسيير
- Faculté des sciences et de la technologie
- كلية العلوم الاجتماعية والإنسانية
Recent Submissions
On the efficiency of the transformation-based template protection algorithms
(university of bordj bou arreridj, 2025) Zineb Maaref
With the intense proliferation of biometric identification systems (BIS), several security con cerns about the vulnerability of the user templates have emerged. Indeed, unlike the conven tional security systems that are based on passwords or tokens which are renewable, a biometric
template is not renewable once compromised. In addition, a compromised template can reveal
the original biometric data, which constitutes a clear threat, as it can be used to track the user
from one application to another. In fact, new algorithms have been proposed in the literature
to reconstitute the original biometric trait by using the extracted features, attacking the stored
features makes it possible to reconstruct the user’s fingerprint, face, or other biometric trait in
order to usurp the identity of another person or entity. For these reasons, cancelable biometric
template protection methods have been proposed to overcome these problems. Their basic idea
is to transform the biometric data and achieve the matching in the transformed domain. The
transform function must simultaneously fulfill the following four properties: non-invertibility,
cancelability, accuracy and diversity. The non-invertibility property guarantees that the origi nal biometric data can’t, or it is hard to, be recovered even if some parameters of the transform
function are known. This is generally ensured by the non-existence of the inverse transform
function (one-to-many inverse-transformation) or by, simply, making the search-space size very
large to escape to a brute-force attack.
This thesis aims to investigate the robustness of cancelable biometric systems by analyzing and
classifying various attacks targeting these systems based on well-defined criteria to enhance
their security level. Additionally, it proposes a comprehensive evaluation framework grounded
in stringent standards to assess the effectiveness of protection schemes against such attacks.
Furthermore, a protection system for palmprint templates is implemented using irreversible
transformation, ensuring a high level of security while ensuring the practical characteristics of
these systems.
On the other hand, we are interested in transformation-based techniques that establish a map ping between the original biometric template points and the transformed template. An attack
against a cancelable fingerprint scheme is conducted to demonstrate the possibility of inverting
the transformation function and to analyze the impact of correlation between multiple instances
of protected templates generated from the same biometric trait on the efficiency of such algo rithms.
Sur les équations intégo-différentielles et la méthode des éléments finis
(university of bordj bou arreridj, 2025) ZERAIBI Khalissa
The main objective of this thesis is to propose a theoretical and numerical study on lin ear integro-differential equations. we used Lax Milgram theorems to provide existence and
uniqueness results for linear integro-differentials. In addition, we applied the finite element
method for the approximate solution of some linear integro-differential equations. Finally,
several numerical examples are given to show the effectiveness of our approaches.
Issues de la simulation basée crowdsourcing pour l’informatique verte
(university of bordj bou arreridj, 2025) Bilal BENCHARIF
In this thesis, we propose an innovative approach to optimize logistics systems by
integrating crowdsourced real-time data collected via the Google Distance Matrix API.
By leveraging a probabilistic tabu search algorithm, we have developed a framework ai med at improving the management of delivery routes in the context of green computing.
Experiments conducted on both simulated and real data reveal that speed has a decisive
impact on energy consumption. Furthermore, the analysis demonstrates that the trave led distance alone is not a reliable indicator of energy usage—indeed, a longer route does
not necessarily imply higher energy consumption, especially when coupled with optimized
traffic conditions. These results underscore the potential of collaborative approaches in
transforming sustainable logistics and open up new perspectives for optimizing transpor tation syste
Accélération de la convergence de méthodes numériques pour résoudre des équations intégrales
(university of bordj bou arreridj, 2025) ABDENNEBI Issam
The research work presented in this thesis focuses on improving the convergence speed of
numerical methods for solving integral equations. These equations often introduce a very
complex behavior, posing significant challenges to traditional numerical techniques, par ticularly in terms of convergence and accuracy. To address these challenges, we have de veloped and analyzed an adaptive spectral collocation method for Fredholm and Volterra
integral equations of the second kind, which can achieve fast convergence and high ac curacy despite the fact that its solution exhibits localized rapid variations, steep gradi ents, or a steep front. Adaptivity is implemented using a suitable family of one-to-one
mappings to generate a new equation with smoother behavior that can be approximated
more accurately. The proposed method can achieve exponential accuracy by adjusting a
parameter-dependent mapping in the modal approximation according to the given data.
Finally, several numerical examples are given to show that the proposed method is prefer able to its classical method and some other existing approaches with a relatively smaller
number of degrees of freedom
مطبوعة محاضرات في مقياس قانون المجتمع الدولي
(مكتبة كلية الحقوق والعلوم السياسية - جامعة محمد البشير الابراهيمي برج بوعريريج, 2025-06-17) صديقي سامية