bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mutual influence of energy efficiency and innovation activity in the industrial sector of the economy
Authors: Nursapina Khanbibi , Kuangaliyeva Tursynzada , Uryngaliyeva Aizhan , Ibadildin Nurkhat , Serikbayev Serik , Tulegenova Ainagul , Kenzhin Zhaxat 
Published: May 2024

The object of the study is energy efficiency and innovation activity of industrial enterprises.
The literature review has shown that the problem of the nature of mutual influence of energy efficiency and innovation activity of the enterprise remains unresolved. The following problem was investigated: existence and nature of dependence of energy efficiency and innovation activity of industrial enterprises. This problem is solved in this study based on the construction of trend lines on the average annual dynamics of changes in energy efficiency, the share of intangible assets and the share of R&D results of large industrial enterprises for 2018–2022. The following results were obtained:
– indicators of the share of intangible assets and R&D results directly affect the energy efficiency indicator;
– the indicator of energy efficiency does not affect the indicator of the share of intangible assets, while it has a direct impact on the indicator of R&D results.
These results explain the priority of the indicator "share of R&D results" in innovation activity for the energy efficiency of enterprises, as it is based on real production. The features of the obtained results consist in the application of comparable correlation analysis coefficients, confirming the existence of a direct relationship between these parameters. The paper provides recommendations on the use of the obtained results at the level of strategic management of an industrial enterprise.
The practical significance of this study is the possibility of applying the findings and recommendations to improve the energy efficiency of industrial enterprises in their innovative development in the scope and conditions corresponding to the developing economy
Improving the thermostatic steam trap characteristics using spring elements with the shape memory effect
Authors: Pylypchak Vitaliy , Epifanov Oleksandr , Patsurkovskyi Pavlo , Shapovalov Yuriy 
Published: May 2024

The object of research is the deformation-force characteristics of spring elements of thermostatic steam traps with the shape memory effect.
The research solves the problem related to the imperfection of the design of steam traps controlling elements and their high inertia.
Experimental studies on the impact of the spring force elements cooling rate on the deformation-force characteristics were conducted. Experimental studies showed that the significant impact of the spring force elements cooling rate on the deformation-force characteristics is observed exceptionally under the deformation mode at a temperature t ≤ Мf. Based on the results of the experiments, it was found that decreasing the cooling rate from 66.7 to 0.013 °C/s has a positive effect on the spring element deformation-force characteristics.
Distinctive feature of the work is the study of winding pitch and thermal force cycling impact on the deformation-force characteristics of spring elements. It was found that using thermal force cycling makes it possible to reduce the force required for complete compression of the spring element by 60 %. Intensive decrease in the force required for the complete compression of the spring elements occurs during the first 100 thermal force cycles.
The rational method for spring elements heat treatment has been given. It is based on the next steps: heating to a temperature of 400–500 °C for 1 hour; exposure at this temperature for an hour; cooling with rate 0.013 °C/s, the number of thermal force cycles is at least 100 with a winding pitch of 8·10–3 m. Based on research results, an improved design of thermostatic steam trap with controlling element in the form of cylindrical compression spring made of the VSP-1 alloy based on nitinol has been presented
Construction of a model for evaluating the efficiency of technology transfer process based on a fuzzy logic approach
Authors: Makedon Viacheslav , Myachin Valentin , Plakhotnik Olena , Fisunenko Nadiia , Mykhailenko Olha 
Published: May 2024

The object of research is technology transfer, which covers the mechanism of transfer of technological knowledge and innovations from developers to end users or manufacturers. The problem to be solved is to provide a relevant assessment of the effectiveness of technology transfer by applying modern economic and mathematical models (based on the method of fuzzy logic) to assess the effectiveness of technology transfer under conditions of uncertainty.
The main results obtained: a fuzzy-logical model for evaluating the level of the technology transfer efficiency indicator was built; it is performed according to the following algorithm:
1) the involvement of three components of technology transfer – technological, financial, and marketing as input variables of the model, which are calculated on the basis of statistical and financial reporting data, expert surveys;
2) selection of parameters and type of membership function for three input variables and one output variable (integral indicator) and construction of a system of 27 logical rules;
3) determining the efficiency of technology transfer using Mamdani's fuzzy derivation and checking the adequacy of the model.
A visualization of the "input-output" surface was performed, which determines the maximum value of the TTPE (TechnologyTransferProjectsEfficiency) indicator, which serves as a summary indicator for the success of technology transfer projects and is observed at high levels of model input variables. The indicator T (technical component of technology transfer efficiency), F (financial component of technology transfer efficiency), and M (marketing component of technology transfer efficiency) was introduced.
The scientific results could be applied to determine the optimal ways of technology transfer to industry, to plan strategies for introducing new technological products to the market, taking into account the effectiveness of licensing, partnership, and cooperation processes
Finding an analytical solution for the cylinder’s fluxmetric demagnetizing factor using spherical harmonics
Authors: Getman Andriy , Konstantinov Oleksandr 
Published: May 2024

The work examines an analytical solution for calculating the fluxmetric demagnetizing factor of cylindrical magnets at large values of magnetic susceptibility and an arbitrary value of elongation. The application of the analytical solution for calculating the demagnetizing factor significantly simplifies the modeling and calculation of magnetic characteristics of cylindrical technical objects. A simplified analytical model of the scalar potential of the magnetic field of a cylinder with infinite magnetic favorability, inductively magnetized in a uniform magnetic field, was constructed using an approximate representation of the distribution of fictitious magnetic charges on its surface. The method of spherical harmonic analysis for the magnetic field was used, which made it possible to obtain an analytical representation of the demagnetization field in the central cross section of the cylinder. Limitation of the harmonic series of this representation by seven first harmonics is proposed, and an additional amplitude factor is applied to correct the contribution of the first harmonic to the demagnetization field. This made it possible to compensate for the distortion of the magnetic field near the ends of the cylinder and bring the simplified analytical model closer to the target mathematical model with a uniform demagnetization magnetic field. The reliability of the results of calculating the fluxmetric demagnetizing factor according to the derived formula was evaluated by comparing them with the known results obtained using the numerical method of calculation and according to empirical formulas. It is shown that the proposed approach makes it possible to obtain reliable results of calculating the fluxmetric demagnetizing factor with a deviation of up to 5 % at infinite favorability in the range of cylinder elongation values from 0.01 to 500
Determination of the antioxidant potential of processing products of osmotically dehydrated chokeberry fruits and beer enriched with them
Authors: Samilyk Maryna , Illiashenko Yana , Rudichenko Yevhen , Yevtushenko Yevhen , Huba Svitlana , Tkachuk Svetlana , Ryzhkova Taisia , Heida Iryna , Lysenko Hanna , Severin Raisa 
Published: May 2024

The demand for functional and health products, as well as the depletion of traditional raw materials, encourages the use of new types of resources. Aronia melanocarpa is a non-traditional plant raw material that has significant potential but is almost never used in the food industry. The aim of this study is to determine the antioxidant potential of processed products of osmotically dehydrated chokeberry fruits and beer enriched with them. The object of the study is the processing products of osmotically dehydrated chokeberry fruits and beer enriched with them.
Chokeberry fruits were dehydrated by osmotic dehydration and drying, ground into powders, and their antioxidant properties were determined. Osmotic solutions and fresh fruits were analyzed for flavonoids, anthocyanins and antioxidant activity. Three experimental samples of beer were produced using traditional technology (K) and with the addition of 6 % (D1) and 10 % (D2) osmotic solutions separated from partially dehydrated fruits. An organoleptic analysis of beer was carried out and its antioxidant activity was determined. The results showed that when using osmotic dehydration, the loss of flavonoids was significantly less (29.74 mg K/100 g) than when using the traditional drying method (39.13 mg K/100 g). When applying the proposed regime of fruit dehydration, about 70 % of anthocyanins are retained. While the traditional method preserves only 59 % of these pigments. The sugar solution on the surface of the fruit prevents significant loss of antioxidant compounds. This explains the higher antioxidant activity (9.86 mmol Trolox/100 g) in samples dehydrated using osmotic dehydration. Adding a chokeberry osmotic solution to beer in an amount of 6–10 % leads to an increase in its antioxidant activity by 9–16 mmol Trolox/100 g
Improving the production technique of pat based on multicomponent fruit and berry paste
Authors: Zagorulko Aleksey , Kasabova Kateryna , Zahorulko Andrii , Shydakova-Kameniuka Olena , Ponomarenko Nataliia , Bereza Olena , Gromov Aleksey , Kholobtseva Iryna 
Published: May 2024

The object of this study is the technology of making fruit pat based on apple, apricot, and rosehip paste.
To increase the organoleptic and physical-chemical quality indicators, the technology of functional fruit pat for functional purposes has been improved by using fruit and berry paste as a fruit base. Accordingly, a technique for the production of fruit and berry paste (apple 50 %, apricot 35 %, rosehip 15 %) was devised. The peculiarity of the technique is a short-term, 30–40 s, concentration at 52–54 °C in a rotary evaporator, which will positively contribute to the preservation of the functional ingredients of raw materials, unlike conventional batch vaporizers. The paste has an improved viscous structure and organoleptic properties compared to the control, which makes it possible to recommend it as a fruit base for pat.
The viscosity of the pat mass based on the paste at 50 °C is 225 Pa∙s, which is 20 % higher than the control ("Fruit" pat), which will contribute to better structure formation. At the same time, the sample with the paste has better indicators of taste and smell, which can be characterized as natural and harmonious. The new pat has a natural orange saturated color and is characterized by a long-lasting consistency, and the content of functional ingredients significantly exceeds the control sample. The quantitative content of dietary fiber, vitamin A, C, β-carotene is important, according to which the devised pat based on the paste can be classified as a functional product. The new products are characterized by an organic composition of raw materials, do not contain artificial dyes and flavors, and the proposed technological solutions simplify the process of their production, which makes it possible to recommend the technology for implementation at craft enterprises
Construction of the mathematical model of magnetic transmission for an autonomous wind power plant
Authors: Kovalenko Mykhailo , Kovalenko Iryna , Tkachuk Ihor , Reutskyi Mykola , Harford Aaron , Zhuk Serhiy 
Published: May 2024

The object of research is electromagnetic and mechanical processes in magnetic transmission for an autonomous wind power plant of small power.
The use of magnetic transmission as part of an autonomous wind power plant makes it possible to improve the reliability and efficiency of such a system.
In the current work, a study of magnetic transmission as part of an autonomous wind power plant was carried out to investigate the parameters and characteristics of magnetic transmission.
This paper reports the construction of a numerical simulation mathematical model of a magnetic reducer operating as part of an autonomous wind power plant with a permanent magnet generator. The model takes into account discrete structure of internal and external rotors and modulator; changes in model parameters when input parameters change. It also takes into account losses, change of load angle and electromagnetic moment; the effect of changing the generator load.
The built model of the magnetic reducer system differs in that the change in the generator load leads to a shift of the operating point on the mechanical characteristics of the rotor of the wind power plant (WPP). The model also works in the opposite direction: changes in wind parameters affect power, voltage, current, and electromagnetic moment.
With the help of the model built, the parameters and characteristics of not only the magnetic reducer but also other components of the system were investigated. The efficiency at the output of the electric generator was determined, which is ≈75 % at a load of 2.0 kW. The magnetic transmission moment at a wind speed of 7.8 m/s for the high-speed rotor is 0.91 N∙m, and the low-speed rotor is 7.8 N∙m, which corresponds to a transmission ratio of 8.6. This expands opportunities for exploratory research
Identifying the influence of land logistic driver cognitive energy impact on supply chain performance through agent-based simulation
Authors: Tama Ishardita Pambudi , Hardiningtyas Dewi , Sudiarno Adithya , Larasati Aisyah , Nugroho Willy Satrio 
Published: May 2024

Logistic transports link demand generators, distributors, and producers in a supply chain network (SCN). The existence of logistic transports is critical to ensure whole nodes’ economic sustainability. This study explores the impact of human factors on SCN performance through cognitive energy expenditure (CEE) tracking. Agent-based model (ABM) simulation was used to analyze the impact of CEE from truck driver’s electroencephalography (EEG) data to obtain the postsynaptic potential values, which were then transformed to calorific energy. The fleet agents, retailers and distributor models were built based on the East Java, Indonesia, logistic transport route around Karanglo, Gempol, Bungurasih, and Gubeng. The frequency and the peak value of the EEG data, postsynaptic potential, and energy data indicate the same information. All data indicate that more challenging routes have higher frequency and higher peak values. The ABM simulation of the fleet agents shows balanced CEE throughout entire routes due to the precise rest period and eat scheduling. The average delivery success rate was 8 out of 30 or 26.7 % in each simulation time step. Hence, most goods delivery tasks can be completed by fleet agents in a balanced system. As a consequence, the SCN performance is also balanced due to the fluid inventory shift without overstock and stockouts. The rest and eat periods of a fleet agent were scheduled after the CEE has been peaked. The time lag between rest periods and transport operations has to be maintained to overcome fleet agents task buildup. Task buildup has a potential to decay both transport safety and inventory shift rates. Therefore, the upgrade in SCN performance is possible through proper fleet agents scheduling
Electrochemical characteristic and microstructure of Ti-6Al-7Nb alloy by centrifugal casting for orthopedic implant based on ageing time variations
Authors: Oktikawati Anjar , Riastuti Rini , Damisih Damisih , Nyoman Jujur I , Paul Setiawan Kaban Agus 
Published: May 2024

The alternative Ti-6Al-7Nb alloy has gained extensive progression due to its ability to eliminate the cytotoxicity of vanadium (V) in Ti-6Al-4V alloy for orthopedic implants. The production of titanium alloys by centrifugal casting shows significant potential to reduce costs. Heat treatment and aging can tailor the microstructure and improve the corrosion resistance of titanium alloys. This study examines the effects of various ageing times on the microstructure and corrosion resistance of a centrifugal cast Ti-6Al-7Nb alloy that has previously been heated and treated at a temperature of 1050 °C, and subsequently cooled to room temperature in argon atmosphere gas. Ageing was carried out at a temperature of 550 °C with variable times of 0, 4, 6, and 8 hours. The surface morphology, metal phase changes, and electrochemical characterization were tested using an optical microscope (OM), X-ray diffraction (XRD), potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS). The basket-weave microstructure is formed where globularization occurs in some phases as ageing time increases. Increasing the FWHM α value is correlated with increasing the amount of α' martensite phase. As an ageing time enhances, the temperature might offer a greater driving constrain for the nucleation and expansion of the lamellar phase (α). Ageing of 8 hours has the lowest corrosion rate, 0.0023 mpy and highest corrosion resistance, 90457 Ω∙cm2, due to the partially bimodal structure and grain refinement with a smallest grain size of 327.87 µm. Tafel polarization results show that all passivated samples are stable in the Solution Body Fluid (SBF). This work can be used as a starting point for developing microstructural evolution in titanium alloys
Determining biochemical qualitative indicators of grapes during long-term storage
Authors: Nabiyev Ahad , Kazimova İlhama , Mammadaliyeva Maryam , Maharramova Sevinj , Nasrullayeva Gunash , Yusifova Mehriban 
Published: May 2024

This paper reports a study aimed at determining the biochemical quality indicators of grapes during long-term storage. The object of research was nine table varieties of ripened grapes. These include white varieties – Tabrizi, Karaburnu, White Shasla, Agadai; pink varieties – Nimrang, Marandi Shamakhi, Taifi pink; red varieties – Kyzyl raisins and Hamburg Muscat.
The grapes were stored in refrigerators for 5–6 months, at a temperature of 0–1 °C and air humidity of 87–95 %. The grapes were studied before planting and 30–40 days before the end of storage.
Long-term refrigerated storage of grapes using weekly fumigation with sulfur dioxide is accompanied by a decrease in the activity of oxyreductases and a gradual increase in the activity of pectinesterase. This causes changes in the quantity and proportions of nutrients and other chemical components that determine the nutritional and biological value of the final product.
It was revealed that during the sale of ripened grapes stored using weekly fumigation with sulfur dioxide, the activity of the studied oxyreductases is slightly restored in pink varieties – Nimrang, Taifi pink, and in white varieties – in Karaburnu and Tabrizi. In the Marandi Shamakhi variety, the activity of enzymes does not change, therefore, for a long time in these grape varieties, especially in the Marandi Shamakhi variety, darkening and softening of the berries are not observed during their sale.
Among the studied table grape varieties, Tabrizi, Karaburnu, Nimrang, and Marandi Shamakhi, with long-term refrigerated storage using weekly fumigation with sulfur dioxide, have the longest shelf life; under a controlled gas environment, the results reported here could prove useful in practice
Identifying the effect of thickness on crack width in one-way reinforced concrete slab structures
Authors: Kridaningrat Bhondana Bayu Brahmana , Soehardjono Agoes , Wisnumurti Wisnumurti , Nuralinah Devi 
Published: May 2024

This paper presents an evaluation study of crack limit states according to design codes and previous research. It aims primarily to relate research findings to design code similarities. Cracks in reinforced concrete structures are still a challenging problem for researchers, especially in one-way plate structures where there is still a lot of damage and corrosion in the reinforcement due to cracks. Finding the right formula will make it easier for practitioners to design these structures, and the problem of durability in reinforced concrete plates can be overcome. From this research, an approach is proposed on how to predict the maximum crack width formula in one-way reinforced concrete slabs with different thicknesses. Plates use a variety of thicknesses, including 125 mm, 150 mm, 175 mm, and 200 mm. The test specimens have the same dimensions and steel reinforcement, a slab width of 0.6 m and a length of 2 m. From a literature study of prediction formulas from previous research works and codes, namely wmax(prop)=7.5*10-3 fsh-0.333, it was found that thickness (h) has little influence on maximum crack width. The results from both approaches in this analysis are overall in accordance with the observed experimental tests and the proposed formula. Based on these observations, increasing the thickness of the reinforced concrete slab has significantly reduced the maximum crack width so that the experimental formula is obtained, namely wmax(exp)=0.32*fsh-1.113. Therefore, a constant is needed to evaluate the influence of thickness parameters for slabs with a thickness less than 200 mm on the maximum crack width formula for reinforced concrete slabs, and a special approximation formula has been obtained. In practical use, the crack width formula can only be used for one-way slabs