May 2023
On the necessity of shaping Bulgarian national interests in terms of global uncertainty
2023, vol.15 , no.2, pp. 109-120
Article [2023-02-10]
The global security system is undergoing a profound transformation. In this process, the international community is seeking the shape of a new security architecture and international order. At the same time, the Bulgarian state is characterised by a lack of clearly articulated strategic interests. This circumstance is reflected in the weak role of the Bulgarian state in regional and international affairs. In this regard, it is necessary to formulate Bulgaria's main foreign policy interests that will position the country in the new global system.
Nikolay Tsonkov. On the necessity of shaping Bulgarian national interests in terms of global uncertainty. International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 109-120.
Blockchain enabled dual level security scheme with spiral shuffling and hashing technique for secret video transmission
2023, vol.15 , no.2, pp. 97-108
Article [2023-02-09]
In the modern digital era, data is considered to be the most valuable asset. Multimedia data includes audio, image and video forms which grabs attention and vulnerable for hacking. Transmission of multimedia data in open network is always unsecure. In this research paper, a novel method to transmit secret video is proposed. First, keyframes are detected by processing the ROI (region of interest) to classify segments. Spiral Shuffling and SHA512 hashing technique are applied to build the cipher blocks. Blockchain technique enhances strength of the Dual Level (Crypto-Stegano) Security Scheme. Discrete cosine transformation with normalization is applied to embed cipher blocks in audio files without any traces of hidden data. Combining the major security techniques such as Cryptography, Steganography and Blockchain enhances the strength of the proposed BDLSS (Blockchain enabled Dual Level Security Scheme). Experimental analysis is carried out with PSNR, SSIM, MSE, NPCR and Correlation coefficient values to prove the efficiency and the proposed method outperforms well over existing methods.
PL. Chithra , R. Aparna. Blockchain enabled dual level security scheme with spiral shuffling and hashing technique for secret video transmission. International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 97-108.
Star-Galaxy classification using machine learning algorithms and deep learning
2023, vol.15 , no.2, pp. 87-96
Article [2023-02-08]
Cosmology is the study of the universe comprising stars and galaxies. Advancement in the telescope has made it possible to capture high-resolution images, which can be analysed using machine learning (ML) algorithms. This paper classifies the star galaxy dataset into two classes: star and galaxy using ML algorithms and compares their classification performance. It is observed that random forest provides better accuracy of 78% as compared to other ML classifiers. Further to improve the classification accuracy, we proposed a CNN (Convolution Neural Network) model and achieved an accuracy of 92.44%. Since the CNN model itself extracts the characteristics, it exhibits superior classification accuracy.
Amit Sadanand Savyanavar, Nikhil Mhala, Shiv H. Sutar. Star-Galaxy classification using machine learning algorithms and deep learning . International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 87-96.
Enhancing student performance prediction through stream-based analysis dataset using modified XGBoost algorithm
2023, vol.15 , no.2, pp. 75-86
Article [2023-02-07]
In the education domain, predicting the academic performance of students has become an essential task to improve learning outcomes. In this study, we propose a Modified XGBoost (MXGB) model for predicting student performance using stream-based analysis of the dataset. We used a modified version of the XGBoost algorithm using cross-validation, which incorporates stream-based analysis to enhance its performance on real-time data. We preprocessed the dataset and applied feature engineering techniques to extract relevant features for building the model. We trained the MXGB model on the preprocessed dataset and evaluated its performance using various metrics such as accuracy, precision, sensitivity, and F1-score. The results show that our model outperforms the baseline XGBoost model and achieves high accuracy in predicting the student's academic performance. Our model can assist educational institutions in identifying students who are at risk of performing poorly and providing them with timely intervention to improve their academic outcomes.
Nityashree Nadar. Enhancing student performance prediction through stream-based analysis dataset using modified XGBoost algorithm. International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 75-86.
Intelligent surveillance systems on the Internet of Things based on secure applications with the IBM cloud platform
2023, vol.15 , no.2, pp. 59-74
Article [2023-02-06]
The Internet of Things (IoT) is one of the most fast-evolving and most pervasive technological advancements of the last decade. Driven by IoT’s promise for an interconnected world for all people, through a shared Internet-based infrastructure, more and more businesses expand their activities to embrace, competitively, this new concept. More importantly, the ubiquitous, highly granular, and of increasing interconnection and computational capabilities nature of the IoT fabric creates a unique ecosystem for developing powerful, intelligent applications not limited to simply gathering and analysing environmental and people data. This potential combines the IoT’s physical capabilities with the achievements of the more mature discipline of Artificial Intelligence (AI). However, there is still a large number of businesses with no clear plans of investing in the IoT-plus-AI potential, citing multiple obstacles mainly related to the difficulty of understanding, adapting, and developing advanced AI techniques. Our goal is to show that advanced AI functionalities can, now, be easily implemented and operated through existing IoT platforms, by developing an intelligent, remote, surveillance application based on IBM’s Cloud and Watson platforms as well as the Raspberry Zero W low-cost IoT device.
Ioannis Adamopoulos , Aristidis Ilias , Christos Makris , Yannis C. Stamatiou. Intelligent surveillance systems on the Internet of Things based on secure applications with the IBM cloud platform. International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 59-74.
Investigation of communication parameters based on monitoring and statistical modelling
2023, vol.15 , no.2, pp. 47-58
Article [2023-02-05]
For the effective construction of a network infrastructure, it is recommended to carry out a preliminary investigation of communications and information processing by using suitable methods and tools. In this regard, the article deals with an approach applied in the investigation of network communications in a local network structure based on program monitoring and statistical analysis of the measured data. To specify the research object and the means used, the organization of the network structure is presented, and a brief discussion of sample monitoring programs is made. The organization for the conducted program monitoring is presented and main factors of network communications are defined. Statistical modelling approach is used to investigate selected parameters of communication in the network environment. Some obtained statistical assessments are presented which permit to make conclusions for access and communication organization.
Radi Romansky. Investigation of communication parameters based on monitoring and statistical modelling. International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 47-58.
Software implementation of methods for optimal design of power electronic devices
2023, vol.15 , no.2, pp. 35-46
Article [2023-02-04]
The manuscript presents a software implementation of methods for the optimal design of power electronic devices based on MATLAB. Model-based optimization is one of the effective approaches to guarantee the performance of power electronic devices and systems. Through its application, the efficiency of the conversion of electrical energy is increased when setting a certain target function. Several examples are presented to demonstrate the effectiveness of the proposed optimization.
Bogdan Gilev, Nikolay Hinov, Stanislav Stefanov. Software implementation of methods for optimal design of power electronic devices. International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 35-46.
Operational control of probabilistic processes in a multi-stage specialized system
2023, vol.15 , no.2, pp. 27-34
Article [2023-02-03]
A process consisting of sequential operations is considered. For each operation, you can determine the currently available probability of its error-free (high-quality) execution. By the qualitative performance of the operation, we will understand the achievement of a given level of quality in quantitative proportion to the overall level. The purpose of the article is to build a quality management strategy in which a set of probabilities of quality levels not less than a certain threshold value is achieved, with minimal costs for carrying out appropriate measures. The article presents the decomposition of operations into activities; classification of activities into activities with conditionally linear or asymptotic response; quality assessment in a multi-level control system with response functions of various types; optimization problems and their algorithmic solutions.
O.Ja. Kravets, I.A. Aksenov, P.A. Rahman, I.V. Atlasov, Yu.V. Redkin, O.Yu. Frantsisko, O.Yu. Zaslavskaya. Operational control of probabilistic processes in a multi-stage specialized system. International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 27-34.
A model-based approach to enhancing web accessibility for individuals with special education needs
2023, vol.15 , no.2, pp. 15-26
Article [2023-02-02]
An important aspect in software development nowadays is digital opportunities for meeting the needs of disadvantaged affected people with Special Education Needs (SEN). In this article, we consider the problem of identifying and improving the accessibility of web platforms designed for users who have SEN. To achieve this goal, a model was created and implemented in the web platform sopbg.org. The specialized website, which is maintained and developed by the authors of the publication, unites a community of several thousand users with SEN. The intensive consumption of the platform provided the authors with the opportunity to make a number of improvements to the applied model, some of which should be considered.
Denislav Lefterov, Hristo Hristov, Svetoslav Enkov. A model-based approach to enhancing web accessibility for individuals with special education needs. International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 15-26.
Challenges of Electronic Data Interchange in the digital age
2023, vol.15 , no.2, pp. 3-14
Article [2023-02-01]
Electronic Data Interchange (EDI) became popular to facilitate international business transactions in the 1990s, but, even today, it can be seen that its use is not introduced everywhere. This article reviews some statements on the adoption of EDI in companies and integration into other IT systems. Furthermore, it looks at situations in specific countries. Statements are made how to integrate Electronic Data Interchange in cloud-based systems.
Gerrit K. Janssens, Ludo Cuyvers. Challenges of Electronic Data Interchange in the digital age. International Journal on Information Technologies and Security, vol.15 , no.2, 2023, pp. 3-14.