bluuebunny/crossref_metadata_2025 huggingface dataset:
Systematization of industrial innovation management based on the project approach
Authors: Osipova-Barysheva Evgeniya N.
Published: August 2023

Innovative development of the economy in general, and industry in particular, is one of the key priorities of state policy today. It is also aimed at stimulating and encouraging strategic project initiatives and increasing the innovative activity of enterprises. The solution of topical issues related to innovative developments and project activities in modern conditions is assigned mainly to large industrial enterprises, state corporations, research organizations, as well as young initiatives in the form of startups and other project forms. It is manufacturing innovations that are becoming most important now, as they are a fundamental factor of competitiveness and may be of strategic importance for industrial production. Purposeful search for ideas, conducting scientific research, active development, timely technical and informational support and updating, orientation and readiness for structural changes and the influence of the external environment, allow an industrial enterprise to successfully develop in the field of innovation. It is important to ensure and organize the internal organizational environment. Thus, the implementation of an enterprise's innovation policy should be based on competent system management, in a certain way, delimiting and designating the areas of responsibility of departments and specialists. The technical department, in this case, solves the tasks of activating innovation activity based on selected key strategically important decisions, purposefully established in the innovation policy of the enterprise. Managers should be responsible for using up-to-date regulated approaches to activating the system management of this activity. Technological solutions obtained in the process of RD must be effectively introduced into production or commercialized, but, of course, not every idea is justified and finds application on the planned scale. Many innovations do not reach the implementation stage and are rejected at the first stages of design work, and some are implemented, but are ineffective, which is associated with a poorly developed or unproductive management system, and this, in turn, leads to suboptimal expenditure of funds, time and other production resources. This implies the need to systematize the management of production innovations.
Principles and tools for ensuring integrated sustainable development of the industrial complex of the Russian Federation
Authors: Podbornova Ekaterina S.
Published: August 2023

The importance of studying the problems related to the sustainable development and functioning of the Russian industrial complex comes from a large number of reasons, not only economic, but also political, social, environmental and others. They, in turn, are based on new management paradigms associated with networking and increasing the adaptability of macro and microsystems necessary to adapt to new conditions and continuously changing factors of the external and internal environment, which include innovative technologies, digitalization, general technological progress, as well as general economic instability. The concept of sustainability in this case is the most important criterion reflecting stability, continuity, as well as providing a significant share of the efficiency of the production and economic system. An integrated approach to its study in the context of sustainable development is based on the duality of the state of the system: stable and unstable. In a general sense, stability describes such a state of the studied object that ensures the immutability of its main indicators and properties over time. The state of instability, on the contrary, is described as the lack of an object's ability to realize its functions and capabilities, the loss of positive properties and characteristics due to negative exo- and endogenous effects. Proceeding from the fact that the process of functioning of the production and economic system is always associated with a large number of risk factors, it becomes necessary to determine the critical point the point of no return, after the fall of the characteristics of the system, to which its change begins, splitting into components and transformation into another. Thus, an integrated approach makes it possible to determine in a timely manner the cause-and-effect relationships between the stable and unstable state of the system and its current characteristics, but at the same time questions remain related to the possibilities and prerequisites for the transition of the system to one of these states.
The role of technoparks in the development of innovation activity and strengthening the technological sovereignty of Russia
Authors: Skornichenko Natalia N. , Strelkova Natalya V.
Published: August 2023

At present, one of the priority goals for the development of the Russian economy is to stimulate domestic innovative developments in industry to ensure the country's technological sovereignty. Strengthening technological sovereignty, ensuring the outstripping growth of industry is one of the tasks set by the Presidents of the Russian Federation to overcome the impact of international sanctions. Technoparks, as objects of innovation infrastructure, are one of the effective forms of supporting industry in the regions and stimulating innovation. This determines the relevance of the present study. Target. Determination of the role, place and effectiveness of technoparks in solving problems of enhancing innovation and strengthening the technological sovereignty of Russia in the context of international sanctions. Tasks. Identification of priority areas for ensuring technological sovereignty. Determination of the constituent elements of the innovation environment and consideration of technology parks as objects of innovation infrastructure. Study of the performance of Russian technology parks in the direction of the implementation of innovative projects for the development of industry. Methodology. The study presented in the article was carried out using such general scientific methods as analysis and synthesis, scientific generalization. Results. The priority areas for strengthening technological sovereignty proposed by the Government of the Russian Federation were studied, and a study was made of the activities of Russian technology parks in the implementation of innovative projects, including those in the selected areas of technological sovereignty, which is necessary when implementing the import substitution policy in the context of international sanctions. Conclusions. The technopark is a particularly important object of innovation infrastructure in the context of implementing the import substitution policy, developing domestic industrial production and ensuring technological sovereignty.
To the question of the need to strengthen the role of municipal administration in the realization of spatial potential of small enterprises
Authors: Buchvald Evgeny M. , Bessonov Igor S.
Published: August 2023

The sector of small and medium-sized enterprises (SMEs) traditionally refers to potential points of innovative growth that can play a key role in the modernization of the national economy. The current transition to spatial research has led to the study of new aspects. The publication reveals the features of the implementation of the spatial potential of small and medium-sized enterprises in terms of resource capabilities and the quality of public administration at the regional and municipal level. This aspect is relevant in view of the upcoming reform of local self-government, which implies significant qualitative changes in the management system. The purpose of the study is to substantiate the need to strengthen the role of municipal management in the spatial development of small enterprises as a result of the planned reform of local selfgovernment. The paper presents the updated author's structuring of the economic space on the basis of existing documents of a strategic nature. The main directions of regulating the spatial development of SMEs are analyzed on the example of the Samara region (allocation of priority regions and territories, development of depressed territories, development of non-agglomeration territories, cluster interaction), as well as gaps in regulation and support at the municipal level are identified. An updated list of strategic documents on the development of small enterprises operating in the Samara region has been compiled. The spatial and territorial organization of small enterprises is reflected in the documents of the Samara region. Legislative innovations are aimed at more active involvement of the municipal level of public authorities in the development of the local economic space. The proposed powers of the public authority at the municipal level include its own, redistributed and voluntary. However, the issues of resource provision of the powers proposed for implementation come first. Based on the results of the work, a number of additions to the draft law On the general principles of the organization of local self-government in a unified system of public authority concerning the municipal level of regulation and support of SME activities have been substantiated. By way of discussion, the article assesses the possible impact of the main innovations proposed in the draft law on the activities of SMEs.
The importance of brand positioning and current methods of brand promotion of an organization
Authors: Semenova Olga V.
Published: August 2023

The article examines the role and influence of branding on the corporate image of the company. Special attention is paid to the importance of the brand positioning process for creating a positive reputation of the company. The definition, key goals, tasks and functions of the concept of branding are considered. The components that create individuality, such as the value and philosophy of the company, are given, the circumstances that affect the image of the organization are analyzed. The steps for the positive positioning of the company are analyzed. The article contains information about current methods of promoting organizations. The relevance is explained by the fact that in the modern world an organization that does not have a recognizable brand has minimal chances in the market. The purpose of the work is to consider the actual methods of promoting the organization on the example of Russian companies. If earlier the slogan, goals and objectives, the mission of the company created the name of the product, today all these factors create an internal and external environment. Having studied the main ways of promotion in the form of ATL, BTL and TTL communications and their content, a conclusion is formed that those companies that use trending methods of advertising, PR and working with the audience are relevant in the market. Also, the article discusses current methods of promoting the organization's brand on the example of well-known Russian companies: Tinkoff, Dodo Pizza, Fragrance Library, Kinopoisk. It was in these companies that the brand was formed through the introduction of such relevant methods as content management, podcasts and partnerships into the system. Having considered specific examples, the purpose of the article is confirmed by the following conclusion, which suggests that the choice and application of promotion methods depends on many aspects, but for the result it is necessary to focus on trends, the experience of competitors and their shortcomings, which can be eliminated by creating your own individual product.
Human capital as a fundamental factor in innovative transformations and management at the regional level
Authors: Chebykina Marina V. , Mironova Elena A. , Shatalova Tatyana N.
Published: August 2023

The article considers the process of introducing innovative technologies and modernizing production. Asystematic analysis of national economies during the modernization of technological structures is presented. It is substantiated that the condition for the emergence of a stable demand for innovations is the process of total modernization of production. Historically, the increased efficiency of the work of innovative active local networks based in regions, which are characterized by a certain set of favorable conditions for innovative activity, has been proven. The need is identified for the distribution of the interstate system of suppliers of components for manufactured products on the one hand and the zoning of various elements of production on the other. The importance of innovative changes in the regional economy, the need for industrial reorganization in accordance with the principles of Industry 4.0 and the subsequent internal reorganization of the enterprise, especially in the approach to human capital, are shown. Fundamentally different processes in the study of digitalization and digital transformation are revealed. From a historical and economic point of view, the concept of human capital is considered from the position of a determining factor of an innovative economic system. The classification of human capital has been expanded, taking into account the regional level. The characteristics of positive and negative human capital are revealed. It has been proved that in order to achieve a positive effect of human capital, it is necessary to initially form an innovative strategy that includes algorithms for investing in human potential. The features and structure of human capital are revealed with the addition of the element of possessing environmentally significant information. The analysis of academic sources significant in economics, offering various conceptual approaches to the study of human capital, has been carried out.
Principles of market mechanism management in the digital economy. The intensity of the flow of the logistics chain
Authors: Chertykovtsev Valery K.
Published: August 2023

The object of research in this article is the market mechanism of management of socio-economic systems. The subject is the study of the stability of the functioning of the market mechanism. The market mechanism is able to solve tactical issues in the management of socio-economic processes and is not able to solve strategic tasks that ensure the sustainable development of the state (military, social and economic security). Therefore, under certain conditions, regulation of market processes by the state is required. Today, unfortunately, these issues are solved by trial and error, which leads to large socio-economic losses. The author suggests using the method of mathematical modeling using information technology (digital economy) to solve these problems. The optimal variant of the market management process is the condition when demand is equal to supply, i.e. the controlling effect on the market is zero. However, this is an unlikely event, since there is no planning mechanism in the market. Therefore, a large error occurs in the management system of the market mechanism, which leads to a violation of the stability of the system. Particular attention is paid to the development of a mathematical model of the functioning of the market mechanism. The methodological basis of the study was the "black box" method using mathematical modeling of the market mechanism as a system with 100% negative feedback. The application of this method enabled the author to investigate the behavior of the market mechanism for stability. The main scientific results of the study are to obtain transitional characteristics of the market process.
The study of the stable functioning of the market mechanism was carried out using modeling based on the Mathcad computer mathematics system. In the work, criteria for assessing the stability of the market mechanism under various parameters of the socio-economic environment were obtained. The research was based on the method of mathematical modeling to determine the optimal parameters of the stability of the system. The scientific novelty of the work is to determine the stability of the functioning of the market mechanism. The parameters of effective market management are determined. The most responsive parameters affecting the stability of the functioning of the market mechanism are the frequency and attenuation coefficient of the process.
Analysis of the implementation of the cluster approach in the Russian economy in modern conditions
Authors: Kiseleva Oksana N. , Vasina Anastasia V. , Sysoeva Olga V.
Published: August 2023

The Russian economy is currently under significant pressure from various challenges that determine the need for an appropriate response, the basis of which is the intensification of innovative development, primarily in priority sectors. The effectiveness of innovation processes is largely determined by the existing infrastructure that provides the necessary traffic of innovative ideas at all stages from generation to implementation to end users. In this regard, the urgency of creating the necessary structural solutions that ensure the interaction of participants in innovation processes, among which the cluster is one of the priorities, is increasing. Domestic practice shows that active state support for the creation and functioning of clusters is not proportional to the achieved result, which determines the need to identify existing "bottlenecks" in the implementation of the cluster approach in Russia, leveling the efforts made, and identification of possible solutions. The purpose of the article is to identify the main trends and specifics of the cluster approach implemented in the Russian economy, and to identify the most important directions of its development, taking into account existing needs. Based on the data analysis, the dynamics and structure of clusters created in our country are determined, including in the context of regional differentiation, specific features of clusters functioning on the territory of our state are identified. Based on practical cases, the necessity of transformation of the cluster approach is justified, characterized by a shift in emphasis from the territorial aspect to the sectoral one. Thus, the scientific novelty of the presented research is the confirmation of the existing readiness and need for the development of the cluster approach implemented in Russian practice, and the shift of focus towards the sectoral aspect, in connection with which the role of the so-called national clusters is justified and their classification into sectoral and intersectoral clusters is proposed, which will contribute to achieving higher and faster results of innovative development of the Russian economy
Regional mechanism for managing the sustainable development of an industrial enterprise
Authors: Milyukov Alexey A.
Published: August 2023

The article describes an approach to the analysis and management of sustainable development of industrial enterprises and presents a comprehensive strategy for the analysis and management of sustainable development within an industrial enterprise. A control mechanism is presented that is crucial for determining the result of a controlled object and which can be used in a control system. The mechanism for managing the sustainable development of an industrial enterprise is a comprehensive and systematic approach that includes several stages. Various types of enterprise sustainability are considered: economic as its ability to generate profit and remain financially viable in the long term; social as its ability to work in a way that benefits society as a whole, including its employees, customers and the communities in which it operates; environmental as the efforts of a company or organization to minimize the negative impact on the environment while ensuring long-term economic viability; risk as the ability of a business to identify, manage and mitigate various types of risks in such a way as to ensure long-term viability and sustainable growth. The results of this assessment of the level of sustainable development serve as the basis for the development of management decisions and recommendations for the next stage, which may include adjustments to the foundations of sustainable development management. The principles of sustainable development of an industrial enterprise are formulated: environmental responsibility, social responsibility, economic responsibility, innovation, continuous improvement, cooperation, transparency. The article presents methods for managing the sustainable development of an industrial enterprise: developing and implementing a sustainable development policy, conducting a sustainable development assessment, sustainable supply chain management, environmental impact assessment, implementing an environmental management system, eco-design, implementing an energy management system, life cycle assessment, corporate social responsibility, investment in employee training. A regional approach is proposed, as well as a methodology for assessing the levels of sustainable development using qualitative and quantitative indicators. The principles of sustainable development management are outlined.
The impact of sectoral polarization shifts on economic growth in the regional aspect
Authors: Nikolaeva Nadezhda A.
Published: August 2023

Economic science has been studying polarization features in the socio-economic development of territories for a long time. However, the current state of economic, political, social and other processes contributes to the strengthening of the gap in key economic indicators in the global space, subjects and industries provoking a strong asymmetry of socio-economic development of the regions of Russia. The purpose of the research is to study trends in the manifestation of polarization shifts and explain spatial heterogeneity in order to form conceptual approaches to the qualitative achievement of equilibrium in a single economic space. The objectives of the study are closely related to the study of the emerging imbalance in the strategic development programs of the subjects, the level and sources of financial flows, the distribution of labor resources, the level of the social situation and other important areas of economic activity of the territories. To conduct research, we compiled approaches to the analysis of indicators of socio-economic development, changing methods and approaches to the formation of key indicators, identified concentration zones in the intersubject space of the leading complexes of the country's economy. Fundamental research and scientific methods confirm the manifestation of the phenomenon of increasing spatial polarization characteristic of developing countries, in view of the active search and use of competitive advantages to stimulate the economic development of their territories. The domestic economy, traditionally characterized by a high level of spatial polarization, has faced a significant increase in this phenomenon in recent decades. The result of the research is the formation of a new concept for the development of tools and mechanisms for smoothing the socio-economic disunity of the territory, acting as a target for the systemic development of the economic space. New mechanisms should be incorporated into the roadmaps of strategic development of territories. We have studied not only the specifics of transformational processes leading to polarizing shifts in the sectoral and regional economies, but also identified the priority tasks of leveling asymmetric manifestations of socio-economic development. At the same time, current trends in the distribution of accents in the study of classical indicators of the analysis of socio-economic development of regions were formed and trends reflecting the current state of the world economic system were proposed for study.
Older Workers and Work Exit Preferences in a Digitalized Working Life
Authors: Solem Per Erik , Hauge Linda , Hellevik Tale , Herlofson Katharina
Published: August 2023

With working life being in the middle of both a demographic and a digital transition, a key question is whether digitalization may counteract the policy goal of delaying work exit. Here, we use survey data from the Norwegian Senior Policy Barometer to investigate the association between how digital tools are experienced and the preference for timing of work exit. We find that, even after controlling for various potential confounders, experiencing digital difficulties at the workplace is correlated with preferring to leave work early. A relevant follow-up question is then which factors increase the likelihood among older workers of experiencing such difficulties. The analyses show that workplace conditions are more important than individual characteristics, suggesting that efforts taken to reduce experiences of digital difficulties at the workplace could be effective in preventing early exits.
A Critical Review on Nanoparticle Filled Adhesives for Structural Applications
Authors: R Hanumantharaya , B.G. Prem Kumar , B.S. Ajit
Published: August 2023

The objective of this review paper is to highlight some of the noteworthy research that has been done on the use of nanoparticles (NPs) to improve the performance of adhesively bonded joints (ABJs) against delamination initiation and propagation. Various nanoparticle applications, such as carbon-based, ceramic-based, and mineral-based nanoparticles, are covered. Interlaminar shear strength, fracture toughness, and fracture energy are the major parameters that have been considered for enhancing FRP delamination and fatigue resistance.The reported results indicatethat the inclusion of NPs in polymeric matrices leads to improvement of various material properties,even though some discrepancies in the results have been noted. Notwithstanding, additional researchis required to address some of the issues that have not yet been tackled.
Comparative Testing of Tensile, Flexural and Impact Analysis on Coated and Uncoated Kenaf Fiber Reinforced Composite
Authors: Prabaharan T. , Bovas Herbert Bejaxhin A. , Kamatchi Sankaran S. , Ramanan N. , D.S Jenaris
Published: August 2023

Due to its enhanced strength, stiffness, and tensile qualities, fibre reinforced composites are being employed more and more in the aerospace, automotive, plastic and mineral processing industries. Kenaf, jute, Kemp, and other types of reinforcing fibres are frequently utilized and come in strips. The design and analysis of the mechanical characteristics of the Kenaf fibre reinforced composite is the primary goal of this project. Different combinations of fibre and resin are examined for their various mechanical qualities, such as impact resistance, flexural strength, and tensile strength. By altering the fibre orientation and boosting impact strength, the composite is created. By altering the fibre orientation and boosting impact strength, the composite is created. The composite is personally examined using a variety of testing tools, and it is also examined using design software like Ansys. This research aims to increase the composite’s impact strength by adjusting the fibre length. The hydrogen peroxide solution is also coated on the composite before the tests are run. Comparisons are made between the experimental findings for coated and uncoated composites.
Value Stream Mapping- Tool to Optimize the Process
Authors: Gunaki Pradip
Published: August 2023

Value Stream Mapping is known for identifying and eliminating or streamlining non-value-adding activities in manufacturing, production, and business processes. To depict the current status of the operation, a flow diagram depicting the process is drawn. Non-value actions are detected by their waste of time and resources in each step and between each phase. With the use of simulation tools, the process is examined for the possibility of dramatically reducing and simplifying it to the bare minimum of steps. The fraction of value-adding time in the overall process increases when waste is reduced, and the process throughput speed improves. This improves the effectiveness (the right things are done) and efficiency of the revised process (needing fewer resources). With the use of Arena simulation software, this study illustrates how to use corrective procedures in the die casting sector to eliminate non-value added tasks. The future state of the reengineered process is flow charted, with process stages and information flows reworked, simplified, and made less expensive, as well as increased productivity.
Evaluation of Power Consumption in High Efficiency Milling (HEM) of Aluminium 6061
Authors: Noor Rizal Mohamed , Zubair Ahmad Faiz , Zulkifli Abdul Halim , Hemdi Abdul Rahman , Kataraki Pramodkumar
Published: August 2023

In the machining industry, reducing energy consumption at a maximal material removal rate (MRR) has long been a priority. Using the response surface method, a predictive model has been proposed for the minimal power consumption in side-milling machining.  Using response surface method (RSM), the effect of cutting parameters (feed rate, spindle speed, and radial depth of cut) on power consumption was investigated. The results revealed thatfeed rateis the most inﬂuential parameter for power consumption. The higher feed rate, the shorter cycle time thus reduce the power consumption. Based on the optimization model, minimum power consumption of 82.38 kW can be achieved at feed rate = 6,000 mm/in, radial depth of cut of 0.3 mm and spindle speed 12,000 rpm.
Production and Characterization of Hydrochar and Biocrude of Yard Waste from Tectona Grandis Using Hydrothermal Carbonization
Authors: N Abhilash. , Reddy Pavan Kumar , Bhat Pritam , Iyengar Ananth S.
Published: August 2023

Research on the study of tectona grandis for adsorption of dyes, extraction of chemicals dissolved in it for pharma industries is studied from many years. Few researchers have explored the use of tectona grandis in thermo-chemical process such as torrefaction, and pyrolysis. But the study to use of Hydrothermal Carbonization (HTC) to convert leaf litter to value added products of tectona grandis for varying process conditions is not performed. This research is focused to ascertain the role of HTC process parameters on hydrochar and biocrude produced from tectona grandis leaf litter. HTC experiments were conducted in a batch reactor. Various process parameters such as temperature and residence time which affects the yield of hydrochar is reported. HTC of yard waste is carried out at 210oC for a residence time of 20 min in a batch reactor which gives the hydrochar yield of 65% with higher heating value of 26.63 MJ/kg. Characterization of hydrochar performed with proximate analysis, ultimate analysis, SEM and FTIR showed that hydrochar properties are better compared to feedstock properties which can be effectively used as solid fuel. The liquid bio crude separated from solid hydrochar is analyzed using UV spectroscopy. It is found to contain the compounds such as 5-HMF, dibenzofuran, naphthalene and anthracene.
Mechanical Characterization of Graphene Reinforced Al2024/Albite Hybrid Composites by Powder Metallurgy.
Authors: S Madhusudhana , Manjunath L. H. , Prakash J. N.
Published: August 2023

Aluminum copper alloys reinforced with naturally occurring or synthesized ceramic particulates are widely used for producing various automobile components and as structural supports by the aerospace industries. For improving their performance these composite materials have been further refined by the addition of nano materials. Nano sized graphene has played a significant role in this direction. In this present work an attempt has been made to refine Al2024/Albite composite in which the predominant primary reinforcement Albite of 5% by weight has been maintained constant and by addition of graphene as secondary reinforcement with varying content (0.25,0.50,0.75, 1, 1.25 and 1.5Wt%) the composite material was fabricated by adopting powder metallurgy. SEM images of the processed hybrid composites revealed the presence of primary reinforcement Albite and secondary reinforcement graphene reinforcements equitably distributed throughout the Al2024 alloy with very less presence of voids. An appreciable increase in compression strength and hardness has been observed with increase in addition to secondary reinforcement up to 1.25%Wt of graphene, but tends to decrease with further addition of graphene reinforcement.
Optimization of Gas Metal Arc Welding Process Parameters on Structural Steel Plates by Taguchi Method.
Authors: Math Praveen , Praveen Kumar B.S.
Published: August 2023

Steel welding is one of the most contentious academic topics nowadays. Shielded metal gas welding techniques’ impact on the welding of AISI1040 steel have been qualitatively investigated (MIG and TIG). The experimental layout must be developed using the Taguchi approach. Arc voltage, arc current, welding speed, nozzle to work distance, and gas pressure have all been found to have an effect on weld quality. The backing plate’s thickness as well as the plate’s thickness both matter. A trial design based on an orthogonal array is used to create weldments. To determine how successfully the weldments were welded, a set of tests are performed on them. ANOVA is used to assess the suitability of the data. The computed result is used as a contribution from each parameter to obtain the optimum values for fault minimization. Weldments are examined using an angle beam test, and the outcomes are assessed using ultrasound testing (UT). The presence of faults in the tested specimens, such as LOP, LOF, Blowholes, and Cracks.
Numerical Studies of Air Flow Analysis in Compressed Air Filters
Authors: R Tejas , Hiremath Niranjan , Narayanaswamy K S
Published: August 2023

The filter is developed by placing the filter media in between the inner surface and the outer surface of the stainless steel fabrication. Then the study on the compressed coming out of the filter is tested and analysis is made by two methods. In experimental method, the analysis done for the output compressed air which is passed through the 5HP compressor and the pressure gauge which is placed on either side of the filter. The survey is also conducted to check the life span of the filter. In analytical method the results are obtained for the ANYSYS ICEPAK and ANSYS space claim software. Then the results of both methods are compared and the results are concluded
Fault Detection of Bearing using Signal Processing Technique and Machine Learning Approach
Authors: G Manjunatha , Chittappa H C , K Dilip Kumar
Published: August 2023

In large- or small-scale industries, machines have rotary element supported by bearings for accurate drive and fixed support. Fault diagnosis has gained much importance in recent times due to increased bearing failures. This demands an efficient diagnosis methodology to detect faults in bearings. In this work, fault diagnosis for the acquired vibration signals of healthy and fault seeded in rolling element bearings were investigated using signal processing technique and online machine learning approach. The research work is carried out in two phases. The first phase of research work investigates fault detection of bearing using conventional signal processing techniques such as time domain analysis and spectrum analysis. The results show that signal processing techniques may be useful for revealing post fault detection information. It was also concluded that the use of different signal processing techniques is often necessary to achieve meaningful diagnostic information from the signals. The second phase of research work describes fault diagnosis of bearing using machine learning approach. Using MATLAB, Discrete Wavelet Features (DWT), were extracted from acquired signals for different rolling element bearing conditions. J48 algorithm was implemented to extract most significant features. Extracted features were used as input to different classifiers to obtain maximum classification accuracy of rolling element bearings. The results showed that machine learning technique could be used to detect and classify the different fault sizes effectively with vibration signals.
Experimental Investigation of InTube Condensation of HFO-1234yf
Authors: N P Muthuraju , Sadashive Gowda B. , Narasimham G.S.V.L , Gurudatt H M.
Published: August 2023

An increase in global warming potential and other environmental concerns are demanding new environmentally friendly refrigerants. For effective performance of refrigeration and air conditioning system condenser design play a vital role. Experiments were conducted to study the condensation of R1234yf refrigerant inside a copper tube of 8.4 mm in diameter and 750 mm in length. The heat transfer coefficients of refrigerant were calculated against mass flux varying from 150–300 kg/m2 s, quality of refrigerant 0.3 to 0.8, and saturated temperature 30 and 500 C. The experimental heat transfer coefficients were compared to the heat transfer coefficients by the recent MM Sha correlation. The experimental results are in good agreement with an absolute mean deviation of nearly 20% with the MM Sha heat transfer coefficient.
Dynamic Analysis of Flexible two Link Robotic Arm Considering Joint Stiffness
Authors: Koti Vishwanath , Hampali Chennabasappa , Basawaraj  , Jagadeeshwaran N.
Published: August 2023

The robotic manipulator is a machine that can perform a variety of tasks according to specifications without the need of human interference. In order to model and control such devices, vibration analysis of flexible manipulators has become a critical field of study. The finite element approach has been used to analyze single and double connection flexible manipulators made of advanced composite material in the current study. For the modelling and study of the versatile composite manipulators, a three-noded beam feature is used. The effects of the taper angles of tapered flexible composite manipulators on the final product effector movement and vibration has been considered. In present work CATIA V5 is used to model the flexible single link robotic arm and static structural analysis to find stress and total deformation, dynamic analysis is carried out to find different modes, corresponding frequency, and life estimation of flexible single and double link robotic arm and also material optimization is done using different material composition for structural steel, aluminium and CFRP composite material using ANSYS WORKBENCH 18.2 (Finite Element Approach) for life estimation and evaluation using analytical approach.
Nonlinear Auto-Regressive with Exogenous Inputs (NARX) Modelling of Hydroponics Water pH Level in response to Acid and Alkaline Solutions
Authors: Saaid Mohammad Farid , Nordin Mohd Khairi , Yassin Ihsan Mohd , Tahir Nooritawati Md
Published: August 2023

Nutrients are essential to optimising plant growth. However, the introduction of fertiliser in a hydroponics setup influences the pH level of the nutrient solution. This, in turn, could affect plants' growth as many types of plants require a specific pH range to grow optimally. Conventional hydroponics cultivation performs pH adjustment manually – a meticulous and error-prone process. Manual adjustment of pH solutions is prone to estimation errors, particularly when the pH levels change drastically due to the slow response of the solution to the addition of alkaline or acidic mixtures and sensitivity to minute errors in mixture delivery. For these reasons, a model to estimate the solution's pH would help improve the delivery accuracy of the alkaline and acidic mixtures. Past research offers minimal study to optimally construct the model from a System Identification (SI) perspective. This study represents a pH water neutralisation behaviour using the Nonlinear Autoregressive model with Exogeneous Inputs (NARX). The project begins with input and output data acquisition, leading to the development of the NARX model. Model performance was then evaluated by analysing the model fit and residual distribution.
Model for the Propagation of Malicious Objects in a Computer Network with Variable Infection Intensity
Authors: Popova Antoaneta
Published: August 2023

There are a significant number of scientific publications that use epidemic models to propagate malicious objects in a computer network. These models are based on Markovian models with a constant intensity of transitions, which does not correspond to real conditions, since the intensity of transitions changes due to the fact that after some time antivirus systems start to recognize malware. This paper proposes an original approach based on an epidemic model with variable infection intensity of hosts in a computer network. In the beginning, when the threat is not recognized, the malware spreads rapidly. After a certain period of time, the antivirus system recognizes the malicious code, which leads to a decrease in the infection intensity. Simulations have been done for different infection intensity and threat recognition. Demonstrated models account for the infection time of hosts in the computer network, latency phase, malware detection, and clearance from the system.
Aawn: An Interactive Mobile Application for Improving the Communication Skills of Arab Children with Autism
Authors: Wali Arwa , Alfrihidi Modi , Alasiri Nada , Alsabei Najah
Published: August 2023

Autism spectrum disorder (ASD) is a neurodevelopmental disorder that causes challenges in communication and social interaction. Since there is no single treatment for autism, autistic children need extra attention from their parents or caregivers to overcome their linguistic deficiency. Scientific studies have shown that technology-based educational methods are effective and can lead to a significant improvement, especially for autistic children. In recent years, an increasing number of mobile and multimedia applications have been developed to enhance autistic children's verbal communication, emotions, social behavior, and interaction skills. However, many of these systems are either in English or in local autistic children’s native languages. Others are designed to promote specific knowledge, i.e., emotions, or are limited in their features. This paper designs and implements a prototype for Arabic mobile application, called Aawn, to help and improve Arab autistic children's, in their own language, communication and emotions, as well as educational and organizational skills. Aawn is integrated with various supporting technologies based on the Picture Exchange Communication System (PECS) and augmented with graphical features. The system is built and developed using Android Studio and various cloud-based tools. The system can be extended by artificial intelligence (AI) technologies.
Relationship Between Computational and Critical Thinking Towards Modelling Competency Among Pre-Service Mathematics Teachers
Authors: Kannadass Pavitra , Hidayat Riyan , Siregar Pariang Sonang , Husain Alma Pratiwi
Published: August 2023

Participation in modelling activities significantly facilitates the development of mathematical skills. By utilizing the concept of mathematical modelling, students may be able to develop a more grounded understanding of mathematics. The objective of this research was to explore how computational thinking and critical thinking are connected to the mathematical modelling proficiency of pre-service teachers. Correlational quantitative research was conducted on 140 pre-service mathematics teachers from the Institute of Teacher Education, Penang and the Institute of Teacher Education, Ipoh, using a correlational research design. Using cluster random sampling, the Institute of Teacher Education was selected at random. The results revealed that pre-service mathematics teachers exhibited a strong aptitude for computational and critical thinking, but demonstrated a limited level of proficiency in mathematical modelling. In terms of modelling proficiency, the results indicated a significant correlation between computational thinking and critical thinking.The findings from this research demonstrated a significant correlation between critical thinking, computational thinking, and proficiency in modelling. Therefore, computational thinking and critical thinking improve prospective mathematics teachers' modelling skills.
Ethereum Smart Contract Deployment for a Real Estate Management System (REMS) Implemented in Blockchain
Authors: Aliti Admirim , Apostolova Marika , Luma Artan , Aliu Azir , Fetaji Majlinda , Snopce Halil
Published: August 2023

The real industry is crucial sector of the world wide financial system, with significant economic, social and environmental implications. However, real estate transactions are often slow, complex and costly and can be prone to fraud errors, which can lead to significant financial losses and legal disputes. This paper proposes the adoption of blockchain technology in real estate cadastral systems as a solution to the challenges encountered in managing property ownership and transactions. We have described the implementation of our prototype called REMS (Real Estate Management System) and we have presented the deployment of smart contracts in Ethereum platform. Based on measurement, benchmarks and other observation of the system, we have evaluated the server usage of the blockchain network and decided whether Blockchain-as-a-Service (BaaS) should be involved or not in our system. The study results demonstrate the successful implementation of a real estate management system (REMS) using blockchain technology and Ethereum's smart contracts. This study is important because it confirms that similar solutions can be implemented in other areas of public administration, where the structure of the work is similar, i.e. where we deal with issuing documents to citizens.
Non-Destructive Determination of Plant Pigments Based on Mobile Phone Data
Authors: Vasilev Miroslav , Stoykova Vanya , Veleva Petya , Zlatev Zlatin
Published: August 2023

This paper proposes methods and tools for determining plant pigments using data from a mobile phone video sensor. A disadvantage of the known studies in this field is that they are mainly aimed at determining the chlorophyll content. There are few studies related to the determination of pigments such as carotenoids, flavonoids, and betalains, which are also important in terms of determining the condition of plants in their cultivation. Cucumbers were chosen because the long periods of drought in Bulgaria, lead to losses in cultivating these plants. Vectors containing colour and spectral indices were used. These features are obtained through a video sensor on a mobile phone. The kernel method variant of principal components reduces them. Feature vectors are selected using factor analysis, correspondence analysis, and the correlation method. Predictive models have been developed to determine plant pigments. With high accuracy (over 90%), the pigments xanthophyll and chlorophyll A can be predicted.
Utilizing Virtual Laboratory to Improve CNC Distance Learning of Vocational Students at Higher Education
Authors: Prasetya Febri , Syahri Budi , Fajri Bayu Rahmadhani , Wulansari Rizky Ema , Fortuna Aprilla
Published: August 2023

This research develops learning materials for Computer Numerical Control (CNC) programming courses based on virtual reality technology. The impact of the Covid-19 pandemic on social activities, one of which is the educational aspect, has changed the learning pattern to a massive one where the learning process that should be carried out face-to-face, but now must carry out distance learning. Therefore, alternative learning media is needed to support the practicum process from a distance by utilizing virtual reality technology that is simulated using digital devices. The Software engineering models, namely: requirements, design, implementation, verification, and maintenance phases are the five primary stages used in this study, which uses the waterfall development model research method. The feasible of the virtual laboratory obtained the results of material validation, learning media, and small group trials of 12 diploma students of Mechanical Engineering at Universitas Negeri Padang. The findings of the study found that small group trials in CNC virtual laboratory can be successfully utilized in CNC programming courses. This research is expected to have implications for improving learning outcomes in CNC programming courses by using virtual laboratory technology in creating a conducive and quality learning atmosphere, so that the learning material provided can be accepted by students.