SCIDAR - Дигитална архива Универзитета у Крагујевцу
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Defining a Software Solution Requirements for Document Management in Public Enterprises: A Methodology of Organizations Reframing into Quality - Smart Public Enterprises
Full text linkEnterprise sustainability belongs to the fourth industrial revolution era that requires a new approach based on intelligent technologies and the new role of leadership and sustainability structure with respecting new trends in emerging smart technologies and a new focus on Society 5.0. Smart parking has a significant role to foster determinants of sustainability in public parking enterprises and achieve adequate mobility in smart cities. Thus, smart parking is the subject of the research presented in the paper. The paper defines vital processes, including leadership processes and technologies needed for smart parking, managed by innovative public parking enterprises. Having this in mind, trends, key facts, results of the present state of an innovative technology enterprise, and methodologies for designing and establishing smart public parking enterprises are analyzed. The paper aims to identify the present sustainability state of parking enterprises by developing a model that includes the independent variables such as leadership level of intelligent technologies usage included in quality of the business processes, and risk related to the business processes. A dependent variable is the sustainability of smart public parking enterprises. All variables have their indicators which could be assessed by appropriate techniques such as questionnaire techniques, and statistical and artificial neural network approaches. In this way transition from existing public enterprises into sustainable smart public parking enterprises is envisioned.http://ijqr.net/journal/v19-n3/Manuscript%20IJQR%2019-03-01.pdfPublishe
INTEGRATION OF TOTAL QUALITY MANANAGEMENT (TQM) WITH INDUSTRY 4.0
Full text linkThe integration of Total Quality Management (TQM) with Industry 4.0 signifies a transformative collaboration, representing a profound evolution in the approach to quality management within modern industries. By combining the foundational principles of TQM, rooted in the early 20th century and shaped by influential figures such as Frederick W. Taylor and W. Edwards Deming, with the advanced technologies of Industry 4.0, organizations gain a powerful strategy for achieving excellence, efficiency, and sustainable success. Despite the plethora of literature in this field, the complementary nature of these two systems can be observed, enhancing the potential for integration. This integration leverages smart technologies, digitalization, and data analytics to enhance decision-making processes, while preserving and amplifying the core principles of TQM through innovative technologies of the fourth industrial revolution.https://jemit.aspur.rs/archive/v3/n4/5.pdfPublishe
New dinuclear gold(III) complex with 1,5-naphthyridine as bridging ligand: synthesis, characterization, DNA/BSA binding studies, and anticancer activity
No full textTo elucidate an antitumor drug exhibiting enhanced activity relative to cisplatin, a novel dinuclear gold(III) complex was synthesized, incorporating 1,5-naphthyridine as a bridging ligand. Subsequently, the newly synthesized complex underwent comprehensive characterization using various techniques to validate its structural attributes. The stability of the complex in both water and PBS bufer was assessed through UV–Vis spectroscopy. DNA binding studies were conducted employing UV–Vis, fuorescence spectroscopy, and viscosity measurements. Competitive studies with ethidium bromide (EB) or 4′-hydroxyethidium (HOE) were performed utilizing fuorescence spectroscopy. The fndings indicated that the dinuclear gold(III) complex interacts with calf thymus DNA (CT-DNA) through a groove binding mode. Moreover, the investigated complex exhibited signifcant binding constants for its interaction with human serum albumin (HSA) and bovine serum albumin (BSA) and interactions in the presence of site markers (eosin Y or ibuprofen). The dinuclear gold(III) complex demonstrated notable cytotoxicity against HCT116 and MDA-MB-231 cancer cell lines at 24 and 72 h post-treatment. Furthermore, the complex displayed selectivity by inducing signifcantly lower cytotoxic activity in healthy cells than in cancerous ones. In support of its antitumor activity, the complex exhibited proapoptotic efects, as evidenced by increased caspase 9 activity and low percentages of necrosis. Molecular docking simulations were employed to corroborate all experimentally obtained results.Publishe
Finite-region asynchronous H∞ filtering for 2-D Markov jump systems in Roesser model
No full textThis paper addresses finite-region asynchronous ∞ filtering for a class of two-dimensional Markov jump systems (2-D MJSs). A mathematical model is established using the Roesser model, and asynchrony is accounted for using a hidden Markov model (HMM). The modes jumping between the target system and the designed filter are determined by the given conditional probability matrix. Sufficient conditions are derived using suitable Lyapunov function and linear matrix inequalities (LMIs) to ensure stable filtering performance. The practical applicability of the approach is illustrated by two examples. Overall, this study offers a method to tackle filtering challenges in 2-D Markov jump systems, incorporating HMM, Lyapunov functions, and LMIs to
effectively solve the finite-region asynchronous ∞ filtering problem.Publishe
Effect of rearing system and genotype of laying hens on the breaking strength of tibia and femur
No full textThe aim of this study was to determine the effect of the rearing system and the genotype of laying hens on the breaking strength of the tibia and femur. The experiment was conducted in a 2x2 factorial design with two laying hen genotypes (commercial hybrid Isa Brown and New Hampshire dual-purpose breed) and two rearing systems (floor and organic). At the end of the one-year production cycle, six birds per group (24 hens in total) were randomly selected and slaughtered. To examine the quality of the bones, the femur and tibia were removed from each slaughtered laying hen. The breaking strength was measured by a three-point bending test with the IPNIS device. The results show that the rearing system had no significant effect on the breaking strength of the femur and tibia. On the other hand, genotype had a significant effect on femur and tibia breaking strength, such that the New Hampshire hens had better bone quality than Isa Brown hens. Importantly, there was a significant interaction between rearing system and genotype on tibia breaking strength - in the floor rearing system, the New Hampshire genotype had significantly higher breaking strength than the Isa Brown genotype, while the difference that occurred in the organic system between the genotypes studied was not statistically confirmed.Publishe
An Intuitionistic Fuzzy Multi-Criteria Approach for Prioritizing Failures That Cause Overproduction: A Case Study in Process Manufacturing
Full text linkOverproduction is one of the most significant wastes of Lean that can occur in any manufacturing company. Identifying and prioritizing failures that lead to overproduction are crucial tasks for operational managers and engineers. Therefore, this paper presents a new approach for determining the priority of failures that cause overproduction, based on an intuitionistic fuzzy Multi-Criteria Optimization model and the Failure Mode and Effects Analysis framework. The existing vagueness in the relative importance of risk factors and their values is described using natural language words, which are modeled with trapezoidal intuitionistic fuzzy numbers. Determining the relative importance of risk factors is defined as a fuzzy group decision-making problem, and the weight vector is obtained by applying the proposed Analytical Hierarchy Process with trapezoidal intuitionistic fuzzy numbers. The compromise solution, as well as the stability check of the obtained compromise solution, is achieved using the proposed Multi-Criteria Optimization and Compromise Solution with trapezoidal intuitionistic fuzzy numbers. The proposed model was applied to data collected from a process manufacturing company.Publishe
The influence of worm gear material and lubricant on the efficiency and coefficient of friction
Full text linkThis paper presents the results of experimental tests of the efficiency of a singlestage worm gear. Two worm drives were used for testing, where the worms are made of improved steel 42CrMo4 and the worm gears are made of tin bronze CuSn12 and aluminium alloy A356. The values of the efficiency were determined at
different values of revolutions and loads, where oils of different viscosities were used for lubrication. Determining the efficiency, the coefficient of friction of worm drives was calculated for experimental operating conditions, as well as the mass measurement of worm gears before and after testing. Based on the experimental results, depending on the operating mode and oil viscosity, the values of the efficiency of the worm drive made of the material 42CrMo4/CuSn12 are higher by 5 to 9 % compared to the worm drive 42CrMo4/A356. Higher values of the efficiency of the worm drive 42CrMo4/CuSn12 cause lower values of the coefficient of friction by 14 to 21 % as well as less wear of the worm gears.This work has been performed as a part of activities within the project TR 35021, supported
by the Republic of Serbia, Ministry of Science, Technological Development and Innovation, whose
financial help is gratefully acknowledged.Publishe
CONTRIBUTION TO THE RESEARCH OF THE FLORA AND HABITAT CHARACTERISTICS OF SP „BORAČKI KRŠ“ BORAČ
Full text linkThe Natural Monument „Borački krš“, encompasses a part of the Rudnik-Kotlenik region and it is located in the southwestern Šumadija between Rudnički, Kotlenik and Gledić mountains on the municipality of Knić. In the research area, 117 taxa were identified, classified into 41 families. The most numerous species belong to the families Asteraceae (16) and Lamiaceae (9). The forest is hemicrypto-terrophytic with a strong participation of fanerophytes. The high percentage of terophytes and fanerophytes is particularly characteristic, as it indicates a very warm and dry vegetation period of habitat. Invasive species are Erigeron annuus (L.) Pers., Amaranthus retroflexus L. and Robinia pseudoacacia L.Publishe
FORMATION OF HYDROXYMETHYLFURFURAL DURING THE INDUSTRIAL PRODUCTION OF PLUM PEKMEZ
Full text linkIt was analyzed the industrial plum pekmez production: blanching, mashing, cooking blanched plum pulp with invert sugar solution and caramel, final heat treatment, cooling pekmez and surface treatment. The aim was to determine the critical stages in which hydroxymethylfurfural (HMF) forms. HMF is synthesized by the thermal sugar decomposition or as one product of the Maillard reaction and can be an indicator of the thermal degree of food processing. Also, HMF is a quality parameter of food due to its potentially harmful effect on consumer health. The cooking blanched plum pulp was a critical stage when the HMF content was significant increased.Publishe
NUMERICAL AND MULTI-CRITERIA ENERGY FLOW ANALYSIS IN THE KRAGUJEVAC PRIMARY SCHOOL
Full text linkIn this investigation, a numerical and multi-criteria analysis of energy flow in the primary school in the city of Kragujevac is presented. A model of the existing school building with a district heating system was created. Alternative heating systems (the gas boiler, the pellet boiler, and the ground source heat pump) were analyzed to achieve energy savings. Different types of buildings are simulated with and without photovoltaic panels. Google SketchUp was used for building modeling, while EnergyPlus simulated buildings' energy behavior in real conditions. Results show that pellet boilers with photovoltaic panels can reduce primary energy by 89% and CO2 emission by 87.55%. For the ground source heat pump with photovoltaic panels, the final energy saving is 77.83%, primary energy saving is 70.82%, and CO2 reduction is 57.90%. Using numerical and multi-criteria analyses, the authors want to bring the existing public buildings closer to the zero-energy building concept and the city closer to the sustainable development concept