Open Access
Research Article·pp. 399–427·Vol. 47, Issue 2Feb 2026
Anna Konovalenko, Lars Magnus Hvattum, Sebastián Urrutia
Published Online: 03 Feb 2025DOI: 10.47974/JIOS-1392 In this paper: Maximum satisfiability (MaxSAT) and optimum satisfiability (OptSAT) problems are two optimization versions of the NP-complete Boolean satisfiability problem. In the literature, these versions have bee...
Open Access
Research Article·pp. 429–436·Vol. 47, Issue 2Feb 2026
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 03 Feb 2025DOI: 10.47974/JIOS-1423 In this paper: In this article, the paper addresses a modified EMQ model with inspection. For the process parameters problem, one considers that quadratic loss function with process adjustment cost. For the integrat...
Open Access
Research Article·pp. 437–453·Vol. 47, Issue 2Feb 2026
I. Touil, W. Chikouche, Dj. Benterki
Published Online: 31 Mar 2025DOI: 10.47974/JIOS-1464 In this paper: We introduce a primal-dual interior-point approach to address convex quadratic programming dilemmas, utilizing a novel class of efficient parametric kernel functions. Using basic analytical tools, we...
Open Access
Research Article·pp. 455–463·Vol. 47, Issue 2Feb 2026
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 03 Feb 2025DOI: 10.47974/JIOS-1502 In this paper: We present the extended production problem with defective product and time value of money. The mean and production quantity are got based on the minimization of the expected cost.
Open Access
Research Article·pp. 465–486·Vol. 47, Issue 2Feb 2026
Z. Samiei, Fateme Movahedi
Published Online: 15 Feb 2025DOI: 10.47974/JIOS-1516 In this paper: The topological index is a molecular descriptor used to study the Quantitative Structure-Property Relationship (QSPR) study of drugs to examine their molecular characteristics by graph theory modeling...
Open Access
Research Article·pp. 487–506·Vol. 47, Issue 2Feb 2026
Aynur Yonar
Published Online: 23 May 2025DOI: 10.47974/JIOS-1571 In this paper: Classical regression analysis assumes that the data belong to a single class. However, in many application studies, data are typically gathered from various mixed classes without prior knowledge of ea...
Open Access
Research Article·pp. 507–512·Vol. 47, Issue 2Feb 2026
Nader Jafari Rad, Roslan Hasni
Published Online: 10 Sep 2025DOI: 10.47974/JIOS-1572 In this paper: Consider a network (graph) consisting of nodes and edges. We refer to a subset D of nodes as a dominating set or D-set if every node which is outside D, it is connected to a node inside D. If a D-set...
Open Access
Research Article·pp. 513–532·Vol. 47, Issue 2Feb 2026
T. Diphofu, P. Kaelo
Published Online: 03 Feb 2025DOI: 10.47974/JIOS-1573 In this paper: Iterative methods like conjugate gradient methods play an important role in solving large-scale unconstrained optimization problems. They have become popular because of their low memory requirements a...
Open Access
Research Article·pp. 533–538·Vol. 47, Issue 2Feb 2026
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 03 Feb 2025DOI: 10.47974/JIOS-1514 In this paper: This work discusses inventory model based on EMQ, process variance setting, quality investment and parameters of sampling inspection. It also considers a long-term quality improvement tool for decreas...
Open Access
Research Article·pp. 539–551·Vol. 47, Issue 2Feb 2026
Ghada Abdelhady, Ahmed Mohsen, Nermeen Abdelnaser
Published Online: 03 Feb 2025DOI: 10.47974/JIOS-1606 In this paper: The criminal landscape is evolving rapidly. Perpetrators are constantly upping their technological game, exploiting new tools for nefarious purposes. Unfortunately, law enforcement isn’t always keepin...
Open Access
Research Article·pp. 553–568·Vol. 47, Issue 2Feb 2026
A. Pradeepa, P. Arathi
Published Online: 09 Sep 2025DOI: 10.47974/JIOS-1809 In this paper: The Topological indices are one of the useful tools in graph theory provided for chemists, which is the numeric quantity that helps to predict physio-chemical properties of chemical compounds. It has...
Open Access
Research Article·pp. 569–577·Vol. 47, Issue 2Feb 2026
Stefan M. Stefanov
Published Online: 11 Jun 2025DOI: 10.47974/JIOS-1833 In this paper: In this paper, the decision making theory is considered. Some basic concepts are introduced, elements of the decision process are discussed, and decision making under certainty is studied.
Open Access
Research Article·pp. 579–595·Vol. 47, Issue 2Feb 2026
Abhishek, Ruchi Sehrawat
Published Online: 23 May 2025DOI: 10.47974/JIOS-1837 In this paper: The cryptographic system aims to facilitate the secure exchange of information among the intended users and also avoid unauthorized access. It is critical task to generate cryptographic keys to ensure...
Open Access
Research Article·pp. 597–623·Vol. 47, Issue 2Feb 2026
Mahfooz Alam, Mohd. Imran Siddiquei
Published Online: 15 Jul 2025DOI: 10.47974/JIOS-1909 In this paper: The advent of artificial intelligence technologies has transformed various sectors, including taxation. The present study investigates the accuracy and knowledge of taxation advice provided by two lea...
Open Access
Research Article·pp. 625–639·Vol. 47, Issue 2Feb 2026
Brithon D. Ndenje, Buberwa M. Tibesigwa, Mrindoko Nicholaus, Isack E. Kibona
Published Online: 16 Oct 2025DOI: 10.47974/JIOS-2007 In this paper: Challenges in composite number factorization are critical to the fields of information systems security and cryptography. This study meticulously examined the features of triangular numbers and system...
Open Access
Research Article·pp. 641–643·Vol. 47, Issue 2Feb 2026
Manolis N. Kritikos
Published Online: 24 Nov 2025DOI: 10.47974/JIOS-2112 In this paper: In a paper, Geetha, Vanathi, and Poonthalir [1] suggested a model for the MDVRP. However, we find that authors ignore the relationship between the two types of proposed binary decision variables, and...
Open Access
Research Article·pp. 645–672·Vol. 47, Issue 2Feb 2026
Nameesha Chand, Gaurav Indra, Alongbar Wary, Shiksha Nayan, Bhavya Jatrana
Published Online: 07 Jan 2026DOI: 10.47974/JIOS-2117 In this paper: Electronic voting has several advantages in terms of accessibility, effectiveness, and security, it is nevertheless susceptible to ballot tampering, impersonation, and multiple voting. The main diffic...
Open Access
Research Article·pp. 673–681·Vol. 47, Issue 2Feb 2026
Anitha Asokan, Shahin Noor, Lilly Asokan, Rajkumar Ramachandran
Published Online: 24 Dec 2025DOI: 10.47974/JIOS-2137 In this paper: The prospects of our society are whittled away by AI, which is an inescapable sign of progress. Although Artificial Intelligence is still in its nascent stages, it has already enhanced the quality of...
Open Access
Research Article·pp. 683–713·Vol. 47, Issue 2Feb 2026
Ravina Gupta, Sarika Jain, Manoj Kumar
Published Online: 20 Jan 2026DOI: 10.47974/JIOS-2040 In this paper: Object detection and classification in thermal imaging is crucial for a range that operates continuously, such as security, inspection, emergency assistance, and border tracking. When applying several...
Open Access
Research Article·pp. 715–726·Vol. 47, Issue 2Feb 2026
Yi-Hui Liang
Published Online: 16 Jan 2026DOI: 10.47974/JIOS-2050 In this paper: The hotel industry has grown rapidly over the past decade, placing higher demands on managers to outperform their competitors in the industry. Planning and allocating sufficient resources to hotel ope...
Open Access
Research Article·pp. 727–740·Vol. 47, Issue 2Feb 2026
R. G. Veeresha, Siddaraju, Nanjundaswamy M, R. Sujatha
Published Online: 23 Jan 2026DOI: 10.47974/JIOS-2052 In this paper: In this study, we introduce a new variant of the Sombor matrix, denoted by 𝒩𝒮o(ζ), associated with a simple graph ζ(n, e), where the (i, j)-entry for i ≠ j is equal to √(ςi2 + ςj2) and 0 in the either...
Open Access
Research Article·pp. 741–751·Vol. 47, Issue 2Feb 2026
B. Lakshmi Sirisha, G. Sridevi, K. V. S. L. Harika, Shahnazuddin
Published Online: 27 Jan 2026DOI: 10.47974/JIOS-2054 In this paper: In digital world, security is one of the important challenging issues. Data hiding is one of the ways out. Covert communication is possible with data hiding. Steganography technique is one of the usef...
Open Access
Research Article·pp. 1–24·Vol. 47, Issue 2Feb 2026
Mohammad Ubaidullah Bokhari, Shahnwaz Afzal, Aditya Varshney, Imran Khan, Zaynah Khan
Published Online: 20 Jan 2026DOI: 10.47974/JIOS-2114 In this paper: This work introduces a modified ChaCha20 encryption algorithm, an improved variation of the ChaCha20 family, designed to provide superior security, enhanced efficiency, and optimal resource use for co...
Open Access
Research Article·pp. 777–792·Vol. 47, Issue 2Feb 2026
Karthiga Sivakumar, Sutha Kaliappan, Renuga Devi Ramasamy
Published Online: 23 Jan 2026DOI: 10.47974/JIOS-2116 In this paper: Distributed computing is one among the really astonishing innovation in the cutting-edge period because of its productivity in cost-cutting with its adaptability of lessening the own assets while it b...
Open Access
Research Article·pp. 793–810·Vol. 47, Issue 2Feb 2026
Anu Kathuria
Published Online: 31 Jan 2026DOI: 10.47974/JIOS-2187 In this paper: Traceable Codes and Frameproof Codes are Essential in Secure Communication, Data distribution, and copyright protection. These Combinatorial Codes enable the detection and prevention of malicious acti...
