bluuebunny/crossref_metadata_2025 huggingface dataset:
Public-Private Partnership in Handling Corona Virus Disease 2019 in DKI Jakarta Province
Authors: Adiyasha Dwiky Lucky , Izzatusholekha Izzatusholekha
Published: December 2021

With the growing problem conditions and the increasing number of confirmed cases of Covid-19, it requires the DKI Jakarta Provincial Government to collaborate with stakeholders such as the private sector, national companies, and the public in handling Covid-19 in DKI Jakarta Province. This research focuses on the partnership between the DKI Jakarta Provincial Government and the private Human Initiative and Agile Innovation Labs companies. The purpose of this study is to describe and analyze public private partnerships in handling Covid-19 in DKI Jakarta Province. This study uses a qualitative approach with a descriptive method. In the analysis of this study using the theory proposed by Yusuf et al (2006) with three major variables, namely: (1) Process Factor, (2) Partner Factor, and (3) Structural Factor. The data analyzed are the results of interviews, observations, and document review at the Regional Cooperation Bureau, the Secretariat of DKI Jakarta Province. The results of the study show that from this multi-stakeholder partnership relationship produces various benefits for each party. However, on the partner factor indicator, there are still several obstacles, such as the change of officials in policy-making agencies who do not receive transfer of knowledge from previous officials, so that the partnership process becomes hampered.
Institutional Analysis of Drinking Water Supply System in East Nusa Tenggara Province
Authors: Sentanu I Gede Eko Putra Sri , Sriyiono Muhammad Edo Edi
Published: December 2021

The regulatory mandate states that the implementation of SPAM in the regions is prioritized for BUMD as the SPAM manager. If SPAM services are not reached by BUMD, then the implementation of SPAM remains the responsibility of the Central Government or Regional Governments may form a Technical Implementation Unit or Service Technical Implementation Unit to serve areas or areas that have not been reached by these services but can also be implemented by Community Groups and Business Entities to meet their own needs. The purpose of this paper is to analyze how the implementation of SPAM in NTT Province with the perspective of Good Corporate Governance. The research method used is literature review by utilizing relevant journals, books, media also laws and regulations. The results of this study indicate that the implementation of SPAM 2020 is mostly carried out by PDAM (15 districts/cities from 22 districts/cities in NTT), the remaining 7 districts are still in the form of UPTD BLUD and UPTD. Institutions are important to ensure that drinking water services to the community can be served properly, and ensure the functioning of SPAM, both funded by the APBN and APBD.
Policy Implementation of Employment Opportunity for Persons with Disabilities in Pekanbaru City Government Agencies
Authors: Adriana Daffa Nadya , Sujianto Sujianto
Published: December 2021

The employment opportunity policy for persons with disabilities is a policy established by the Government which aims to provide employment opportunities and create employment opportunities for persons with disabilities in order to create equal employment rights between persons with disabilities and normal society so that discrimination against persons with disabilities is eliminated. This study aims to look at the implementation of employment opportunities policies for persons with disabilities in Pekanbaru City and the factors that influence the implementation of these policies. The research method used is descriptive qualitative, data collection techniques using interviews, observation, and documentation. This study uses the theory of policy implementation according to Merilee S. Grindle which consists of two indicators that affect the performance of public policy implementation, namely indicators of policy content which include the interests of the target group, types of benefits, degree of desired change, location of decision making, program implementers, resources involved, and indicators of the implementation environment consisting of the powers, interests, and strategies of the actors involved; characteristics of institutions and authorities; compliance and responsiveness. The results of this study are the finding of deficiencies that must be considered to be improved, namely in the aspect of implementing responsiveness (lack of socialization) so that policy implementation has not run optimally in Pekanbaru City. Researchers also found several factors that influence the implementation of this policy in Pekanbaru City, namely the objectives of the policy, human resources, economic conditions, as well as the response and participation of the target group.
A testimonial injustice ‘out here in the projects’ – misrecognising victimhood in the bed intruder meme
Authors: Thomas M'Balia
Published: December 2021

In the wake of ‘Black Lives Matter’, this paper examines the concept of testimonial injustice and the prejudicial stances held towards victims that diminishes the credibility of their claims and the social support they receive from the public. To explore this concept, the following work revisits the widely parodied U.S. originating broadcast news report, The Bed Intruder. In the broadcast, victims of a home invasion and attempted rape deliver a public call that outlines the conditions of their victimhood and the potential threat to the community. A rhetorical stylistic analysis of the victims’ testimonial discourse and a thematic analysis of a sample of YouTube videos that reappropriate and parody their discourse are conducted. The analyses highlight the memetic elements of the video parodies that acknowledge the victimisation and yet strategically misconstrue events in ways that 1) render the victims and their claims less credible and 2) fail to provide them with the moral concern such an acknowledgement deserves.
Standard language ideology in an English-medium Irish secondary school
Authors: Lucek Stephen
Published: December 2021

The current paper aims to address how one English-medium school functions from the different perspectives within the school: the principal, student/teacher classroom interaction and the students. This approach allows us to see the power differential of the different stakeholders in a school and how iconisation, fractal recursivity, and erasure affect teenagers in Dublin. This paper presents interview data with a principal and the students in a secondary school. Taking a qualitative approach to these data, I show that standard language ideology is linked with economic disadvantage. The school principal's approach to identifying, problematising and seeking to eliminate certain types of nonstandard language in the school reflects a standard language ideology and is consistent with a raciolinguistic approach to linguistic discrimination. The data suggest that the students themselves take a more nuanced approach.
Improving the technology for manufacturing hollow cylindrical parts for vehicles by refining technological estimation dependences
Authors: Puzyr Ruslan , Shchetynin Viktor , Vorobyov Viktor , Salenko Alexandr , Arhat Roman , Haikova Tetiana , Yakhin Serhii , Muravlov Volodymyr , Skoriak Yuliia , Negrebetskyi Igor
Published: December 2021

This paper shows that the technological preparation of production accounts for 20‒70 % of the total labor intensity of technical preparation. An important role belongs to the applied programs of finite-element modeling. However, such software packages often cannot be purchased by small-scale industrial enterprises for various reasons. Therefore, special empirical and analytical calculation models are used, which have proved to be quite effective in typical metal processing processes. Drawing a cylindrical hollow part was used as an example of the improved analytical dependence to calculate meridional tensile stresses. Existing analytical models of the process accounted for the bending moment through additional stresses. However, this approach only roughly described the deformation process. It was possible to refine the existing analytical dependences by introducing a term into the differential equilibrium equations that takes into consideration the bending moment that acts in the meridional direction when a workpiece passes the rounding on the matrix edge. Analysis of the obtained expression revealed that the bending of a workpiece gives rise to the stretching meridional stresses, which depend on the ratio of the squares of the thickness of the workpiece and the radius of the matrix rounding. The results of the estimation data from the numerical and theoretical models coincided for small values of the radius of the matrix rounding of 1‒2 mm, which confirms the adequacy of the analytical solution. In the numerical model, there is an extreme point where the tensile stresses have a minimum and, after it, begin to increase; this corresponds to the matrix rounding radius of 5 mm
Design of an information-measuring system for monitoring deformation and displacement of rock massif layers based on fiber-optic sensors
Authors: Yugay Vyacheslav , Mekhtiyev Ali , Neshina Yelena , Aubakirova Bakhytkul , Aimagambetova Raushan , Kozhas Aigul , Alkina Aliya , Musagazhinov Madiyar , Kovtun Alexandr
Published: December 2021

This paper reports a study into designing an information-measuring system that could be used in coal mines that are dangerous in terms of the explosion of coal dust and methane gas. The results of reviewing technical advancements in the field of fiber-optic system development are given. To solve the set task, prototypes of a fiber-optic sensor of a new type and a hardware-software complex were constructed. The research aims to improve the safety of workers at coal enterprises. The result of the theoretical research has established that additional losses related to a micro bending should be taken into consideration while accounting for the effect of photoelasticity. The fundamental difference between the idea reported here and existing analogs is the development of a hardware-software complex capable of working with a single-mode optical fiber of great length with a significant noise level. The data processing unit is equipped with a television matrix and can analyze changes in the pixels of a light spot. The proposed system is quasi-distributed; it controls individual points within a rock massif. The designed hardware-software system provides high noise immunity of measuring channels when the external temperature changes. The research results helped develop an information-measuring system for monitoring the deformation and displacement of rock massif layers based on fiber-optic sensors, capable of operating in an explosive environment. The system makes it possible to control several layers located in the roof of the workings, while the fiber-optic sensor may contain two or three sensitive elements that are connected to different channels. With a sharp fluctuation in pressure and an increase in the displacement parameter, the system triggers a warning signal about the danger.
Development of soapstock processing technology to ensure waste-free and safe production
Authors: Kalyna Viktoriia , Koshulko Vitalii , Ilinska Olha , Tverdokhliebova Natalia , Tolstousova Oksana , Bliznjuk Olga , Gavrish Tatiana , Stankevych Sergij , Zabrodina Inna , Zhulinska Oksana
Published: December 2021

Soapstock is a large-tonnage waste of the oil and fat industry, the disposal of which is environmentally hazardous. Processing of soapstock into industrially valuable products, in particular, fatty acids, is promising.
The method for producing fatty acids, which consists in sequential saponification of soapstock with sodium hydroxide solution, salting out with sodium chloride and decomposition with sulfuric acid solution has been investigated.
The feature of this work is the study of the effect of salting out conditions of saponified soapstock on the yield and neutralization number of fatty acids.
As an experimental sample, sunflower soapstock was used, the indicators of which correspond to DSTU 5033 (CAS 68952-95-4): mass fraction of total fat – 67.3 %, fatty acids – 61.8 %, neutral fat – 5.5 %.
Soapstock was subjected to preliminary saponification under the following conditions: duration 85 min., concentration of sodium hydroxide solution 45 %. After that, the saponified mass was subjected to salting out. The obtained core soap was decomposed with the sulfuric acid solution under the following conditions: temperature 90 °C, duration 40 min.
Rational salting out conditions were determined: duration (80 min.) and sodium chloride concentration (16%). Under these conditions, the fatty acid yield is 95.0 %, the neutralization number is 194.8 mg KOH/g. The resulting fatty acids comply with DSTU 4860 (CAS 61788-66-7): the mass fraction of moisture and volatiles is 0.85 %, the mass fraction of total fat is 98.9 %, cleavage depth is 94.2 % oleic acid.
This method of soapstock processing increases the fatty acid yield by 3.5 % compared to the method with saponification and decomposition, by 20.3 % compared to the method of soapstock decomposition with sulfuric acid. At the same time, the neutralization number increases by 4.1 % and 8.2 %, respectively.
The improved method for fatty acids producing from soapstock provides high- quality fatty acids with increased yield.
Improved performance of corrugated metal gaskets in boiler’s piping system through multilayered coating
Authors: Nurhadiyanto Didik , Haruyama Shigeyuki , Mujiyono Mujiyono , Sutopo Sutopo , Yunaidi Yunaidi , Surahmanto Fredy , Choiron Moch Agus , Kusuma Novian Indra , Fauzi Nur Chalid
Published: December 2021

The corrugated metal gasket is still in the early stages of development. However, gasket contact flanges with a high surface roughness (more than 3.5 µm) leak and require a lot of force to tighten. A nickel or copper-coated corrugated metal gasket was designed. A water pressure test was used to measure leaks, and the results revealed that nickel or copper-covered gaskets performed better. The effect of high temperature has not been explored in this study, which only reveals high pressure. The goal of this study is to use copper and nickel coatings to improve the performance of corrugated metal gaskets. Copper or nickel infiltrates the pipe flange's rough surface, preventing leaking. The purpose of this study is to investigate the performance of a coated corrugated metal gasket in a boiler system, which has high temperature and pressure. Corrugated metal gaskets were formed using a cold forming process. The gasket material was SUS304, which is copper or nickel-plated through electroplating. The gasket was installed in a series of pipes in the boiler that flows water at high temperature and pressure. The water leak was trickling on white paper that had been placed beneath the gasket. Even small water leaks are detected on white paper. The thermal camera can detect vapor leaks. The results of the studies reveal that the coated corrugated metal gasket's performance was improved, as seen by the reduction in leakage. At the highest pressure of 7 bar and the lowest tightening force of 40 kN, neither gasket leaked. This result is different from standard corrugated metal gaskets, where at the same pressure and temperature, steam and water leaks are observed. Both copper and nickel-plating types can be used to coat corrugated metal gaskets made of SUS304.
Analytical solution of the problem of dynamic synthesis of a six-link straight-line converting mechanism of the sucker-rod pumping drive
Authors: Rakhmatulina Ayaulym , Imanbayeva Nurbibi , Ibrayev Sayat , Uderbayeva Assemgul , Nurmaganbetova Aiman
Published: December 2021

The paper presents an analytical solution to the problem of optimal dynamic balancing of the six-link converting mechanism of the sucker-rod pumping unit. This problem is solved numerically using a computer model of dynamics, namely by selecting the value of the correction factor k. Here we will consider an analytical method for solving this problem, that is, we find the location of the counterweight on the third link of the six-link converting mechanism for balancing. To solve the problem, we use the principle of possible displacement and write an equation where we express the torque through the unknown parameter of the counterweight. Further, such a value of the unknown parameter is found, at which the minimum of the root-mean-square value of torque M is reached. From the condition of the minimum of the function, we obtain an equation for determining the location of the counterweight. Thus, we obtain an analytical solution to the problem of optimal dynamic balancing of the six-link converting mechanism of the sucker-rod pumping drive in various settings. 
According to the results, it was found that with the combined balancing method, the value of the maximum torque M and the value of the maximum power are reduced by 20 % than when the counterweight is placed on the third link of the converting mechanism, as well as when the value of the maximum torque is determined through the correction factor k.
In practice, balancing is carried out empirically by comparing two peaks of torque M on the crank shaft per cycle of the mechanism movement. Solving the analytical problem, we determine the exact location of the counterweight.
Determination of features of composite steel and concrete slab behavior under fire condition
Authors: Nekora Valeriia , Sidnei Stanislav , Shnal Taras , Nekora Olga , Dankevych Iryna , Pozdieiev Serhii
Published: December 2021

Methods for calculating the fire resistance of steel-reinforced concrete slabs made using profiled steel sheets under the influence of a standard temperature regime for more than 120 minutes are considered and analyzed.
Research has been carried out to determine the heating parameters and the stress-strain state of steel-reinforced concrete slabs made using profiled steel sheets under fire conditions for more than 120 minutes. The results of this study allow to obtain indicators of temperature distribution for assessing the fire resistance of such structures for fire resistance classes above REI 120. Accordingly, the results obtained are a scientific basis for improving the existing method for calculating the fire resistance of steel-reinforced concrete slabs made using profiled steel sheets.
The temperature distribution in the cross-section of structures was obtained using a general theoretical approach to solving the problem of heat conduction using the finite element method. Using the obtained temperature distributions, the parameters of the stress-strain state were determined based on the method of limiting states.
To carry out the calculations, appropriate mathematical models were created that describe the effect of the standard temperature regime of a fire, to determine the temperature distribution at every minute in the sections of steel-reinforced concrete slabs with profiled steel sheets. A method is proposed for dividing the section into zones to take into account the decrease in the indicators of the mechanical properties of concrete and steel.
A simplified method for the design assessment of steel-reinforced concrete slabs made using profiled steel sheets is proposed, which is consistent with the current EU standards and can be effectively used to analyze their fire resistance when establishing their compliance with the fire resistance class REI 120 and higher.
Synthesis of precision dosing system for liquid products based on electropneumatic complexes
Authors: Gavva Oleksandr , Kryvoplias-Volodina Liudmyla , Blazhenko Sergii , Tokarchuk Serhii , Derenivska Anastasiia
Published: December 2021

This paper reports the construction of a mathematical model for the process of dosing liquid foods (non-carbonated drinking water). The model takes into consideration the differential equations of changes in the kinematic parameters of the liquid in a dosing device's channels and the corresponding accepted initial and boundary conditions of the process. The boundary conditions account for the influence of software-defined airlift dosing modes using the driver and the geometry of the product pipeline. The current's value measured in mA (with an accuracy of 0.001 mA) relative to the standard scale Imin is Imax=4...20 mA.
Individual stages of the dosing process were analytically described, followed by the analysis of separate stages and accepted assumptions.
The accuracy achieved when testing the experimental sample of the dispenser, with the repetition of the dose displacement process, ranged between 0.35 % and 0.8 %.
The reported results are related to the established dosage weight of 50 ml when changing the initial level of liquid in the tank of the dosing feeder by 10 mm.
An experimental bench has been proposed for investigating the functional mechatronic dosing module under the software-defined modes to form and discharge a dose of the product. The bench operates based on proportional feedback elements (4–20 mA) for step and sinusoidal pressure control laws in the dosing device.
The control model with working dosing modes has been substantiated. The control models built are based on proportional elements and feedback.
During the physical and mathematical modeling, the influence of individual parameters on the accuracy of the product dose formation was determined; ways to ensure the necessary distribution of compressed air pressure, subject to the specified productivity of the dosing feeder, were defined. The study results make it possible to improve the operation of precision dosing systems for liquid products based on electro-pneumatic complexes
Determination of the heat transfer coefficient of a rotary film evaporator with a heating film-forming element
Authors: Zahorulko Andrii , Zagorulko Aleksey , Cherevko Oleksander , Dromenko Olena , Solomon Alla , Yakobchuk Roman , Bondarenko Oksana , Nozdrina Nataliia
Published: December 2021

A model of a rotary film evaporator with a film-forming element with a reflective heated surface has been developed. This will allow stabilizing the hydraulic movement of the cut wave flow due to the reflective surface of the geometric shape for the forced direction of the cut raw material to the heating surface. Autonomous heating of the reflective surface additionally provides a temperature effect in the conditions of movement of particles of raw materials after cutting.
The analysis of the experimental and theoretical parameters of heat transfer made it possible to substantiate the criterion equation for determining the heat transfer coefficient of an evaporator with the proposed film-forming element and a reflective heated surface for calculating the coefficient from the working surface to the raw material. The resulting equation takes into account the influence of the vertical component of the motion of the raw material film, centrifugal movement during the rotation of the film-forming element, mixing of the boiling film of the raw material with steam bubbles, and the geometric characteristics of the film-forming blade on the hydrodynamic flow of the raw material. The calculation of the rotary-film evaporator was carried out using the criterion equation and the obtained useful heat exchange surface – 0.75 m2. The specific metal consumption in a rotary film evaporator with a film-forming element having a reflective surface is 57 kg/m2, compared to the vacuum evaporator traditionally used in canning industries (410 kg/m2), which is 7.1 times less. The duration of the temperature effect on the raw material is also reduced: a rotary film evaporator – 200 s and 3600 s in a traditional apparatus. The data obtained will be useful for the design of rotary-film devices of different geometric parameters using articulated blades with a reflective plate.
Behavior of solution of the elasticity problem for a radial inhomogeneous cylinder with small thickness
Authors: Akhmedov Natik , Akbarova Sevda
Published: December 2021

A non-axisymmetric problem of the theory of elasticity for a radial inhomogeneous cylinder of small thickness is studied. It is assumed that the elastic moduli are arbitrary positive piecewise continuous functions of a variable along the radius.
Using the method of asymptotic integration of the equations of the theory of elasticity, based on three iterative processes, a qualitative analysis of the stress-strain state of a radial inhomogeneous cylinder is carried out. On the basis of the first iterative process of the method of asymptotic integration of the equations of the theory of elasticity, particular solutions of the equilibrium equations are constructed in the case when a smooth load is specified on the lateral surface of the cylinder. An algorithm for constructing partial solutions of the equilibrium equations for special types of loads, the lateral surface of which is loaded by forces polynomially dependent on the axial coordinate, is carried out.
Homogeneous solutions are constructed, i.e., any solutions of the equilibrium equations that satisfy the condition of the absence of stresses on the lateral surfaces. It is shown that homogeneous solutions are composed of three types: penetrating solutions, solutions of the simple edge effect type, and boundary layer solutions. The nature of the stress-strain state is established. It is found that the penetrating solution and solutions having the character of the edge effect determine the internal stress-strain state of a radial inhomogeneous cylinder. Solutions that have the character of a boundary layer are localized at the ends of the cylinder and exponentially decrease with distance from the ends. These solutions are absent in applied shell theories.
Based on the obtained asymptotic expansions of homogeneous solutions, it is possible to carry out estimates to determine the range of applicability of existing applied theories for cylindrical shells. Based on the constructed solutions, it is possible to propose a new refined applied theory.
Devising barrier technologies to ensure the stability of microbiological and organoleptic quality indicators of meat semi-finished products
Authors: Sabraly Sultan , Glotova Irina , Shakhov Sergey , Kutsova Alla , Abzhanova Sholpan
Published: December 2021

Ways to ensure the quality and safety of meat processing products are being devised at an intensive pace. To solve these tasks, various "barriers" are used: chemical, physical, microbiological, as well as their combinations. When performing this research, a critical analysis of existing "barriers" as techniques to stabilize the quality of meat products with long shelf life was carried out. It has been revealed that the main preferences of consumers are associated with natural additives that ensure the safety of products. The introduction of modern barrier technologies is a relevant issue as it could ensure the stability of quality indicators during storage. An important task is to use natural raw materials as barriers. To this end, an analysis of the antioxidant activity of extracts from various plant-based raw materials was carried out. The results make it possible to devise technologies for creating film coatings with bioprotective properties. The dynamics of changes in the microbiological contamination of large-piece semi-finished products from beef in the process of storage at different temperatures were studied. It was found that the use of film barrier coatings leads to a restraining of the growth of microflora and has a bacteriostatic effect, which helps extend the shelf life of semi-finished products compared to control samples. The implementation of this study's results could significantly prolong the shelf life of meat semi-finished products, including at positive temperatures, without the risk of microbiological spoilage and loss of quality and functional-technological characteristics.
Development of a method for producing effective CdS/CdTe/Cu/Au solar elements on a flexible substrate designed for backup supplying systems prevention of emergency situations
Authors: Borysenko Iryna , Burmenko Olexandr , Deyneko Natalya , Zobenko Oleksandr , Yivzhenko Yurii , Kamyshentsev Gennady , Muraviov Volodymyr , Mykhailovska Yuliia , Khrystych Valerii , Kryvonis Svitlana
Published: December 2021

The technology of forming film solar cells based on CdS / CdTe configuration of the "superstrat" type on a flexible substrate has been improved. To increase the efficiency of the developed solar cells on a flexible substrate, a chemical etching procedure in a nitrogen-phosphorus mixture was added to the traditional "chemical treatment". The conducted studies of the output parameters of the developed device structures showed that the highest values are observed in the case of chemical etching, both before the "chloride treatment" and after it. In the course of the study, it was found that a mandatory procedure in the formation of effective device structures is chemical etching in a nitrogen-phosphorus mixture both before the "chloride treatment" and after it. Carrying out the described procedures made it possible to obtain solar cells on a flexible substrate with an efficiency of 13.1 %. The increase in the efficiency of solar cells with two-stage chemical etching can be explained by the formation of excess tellurium on the surface, which leads to a decrease in resistance and, therefore, to a more efficient penetration of chlorine during the subsequent chloride treatment. Analysis of the transverse cleavage of the investigated device structures demonstrates significant grain growth and surface smoothness of the base layer, which ensures good adhesion with back contact. A study of the degradation resistance of the developed device structures during operation has been carried out. It was found that the obtained solar cells based on CdTe on a flexible substrate have a high degradation resistance and after 10 bending cycles there is no decrease in the output parameters. Thus, it has been established that chemical etching in a nitrogen-phosphorus mixture is a mandatory procedure for the formation of efficient solar cells on a flexible substrate.
Devising an individually oriented method for selection of scientific activity subjects for implementing scientific projects based on scientometric analysis
Authors: Xu Huilin , Kuchansky Alexander , Gladka Myroslava
Published: December 2021

The main factors influencing the choice of individual subjects of the scientific activity or potential partners and executors for scientific and educational projects were analyzed. The specific features of choosing project executors of different categories were indicated. The functional responsibilities of project participants in accordance with the project structure were described.
The individually oriented method for choosing subjects of scientific activity as executors of scientific and educational projects was developed, taking into account the productivity of their scientific activities in the past and considering the structure of projects. To determine the merits of the subjects of scientific activity, which are included in the relevant scientific subject spaces, it is necessary to apply the procedure of their productivity assessment. In addition, it is necessary to predict a change in productivity in the future based on retrospective data for this subject. Next, it is required to solve the multi-criteria problem of the choice among the subjects of scientific activity who are quite productive in the opinion of the project manager. The use of the developed method reduces the subjective impact on making a decision regarding the choice of project executors. This is due to the fact that they are chosen by automated calculation of scientometric indicators of subjects, guided only by open sources of information.
The individually oriented method for the selection of subjects of scientific activity was verified on the example of the formation of three applications of research projects. As a result, the average percentage of scientists who meet the requirements of project managers for each scientific subject space was about 46.55 %. The percentage of those involved in the project from those who were selected is about 24.07 %. The probability of cooperation is higher among those who have an average H-index.
Comparing the efficiency of applying yeast of different generations in high gravity brewing
Authors: Kosiv Ruslana
Published: December 2021

When fermenting beer, in addition to the formation of basic, secondary, and by-products, which largely determine the taste and aroma of the beverage, yeast is accumulated. Such yeasts can be reused in subsequent serial repitching, which allows cost savings compared to yeast cultivated for each fermentation.
This paper investigates the influence of yeast generation on the progress of the wort fermentation process and the quality of beer obtained, specifically in high gravity brewing.
It was established that the increase in the number of yeast generation in the range from the first to the fourth generation causes a slight acceleration of the fermentation process of high-gravity wort, while at higher values of the fermentation generation number it slows down. Yeasts secreted after six or four serial wort fermentations with a gravity of 15 °P/18 °P, respectively, have a good physiological state and can be reused. The yeast generation number does not significantly affect ethanol content and sensory beer quality indicators. However, the use of yeast of the seventh and eighth generation causes a slight increase in the pH and color of high gravity beer, the appearance in the aroma of noticeable extraneous shades ‒ yeast tone, tone of young beer.
As wort gravity increases, the number of yeast re-use cycles decreases, which is a consequence of the influence of various stress factors, specifically high osmotic pressure, and increased ethanol levels. Therefore, for the fermentation of wort with a gravity of 15 °P, it is recommended to use yeast up to five generations, for 18 °P wort ‒ to four generations. To obtain beer with appropriate physicochemical parameters and high sensory evaluation in high gravity brewing technology, it is advisable to ferment wort with a gravity of 15 °P with yeast for up to five generations.
Analysis of the main factors affecting mass production in the plastic molding process by using the finite element method
Authors: Magid Hani Mizhir , Dabis Badr Kamoon , Abed alabas Siba Mohammad
Published: December 2021

Plastic injection molding is widely used in many industrial applications. Plastic products are mostly used as disposable parts or as portable parts for fast replacements in many devices and machines. However, mass production is always adopted as an ideal method to cover the huge demands and customers’ needs. The problems of warpage due to thermal stresses, non-uniform pressure distribution around cavities, shrinkage, sticking and overall products quality are some of the important challenges. The main objective of this work is to analyze the stress distribution around the cavities during the molding and demolding to avoid their effects on the product quality. Moreover, diagnosing the critical pressure points around and overall the cavity projection area, which is subjected to high pressure will help to determine the optimum pressure distribution and ensure filling all cavities at the same time, which is another significant objective. Computer-aided design (CAD) and CATIA V5R20 are adopted for design and modeling procedures. The computer-aided engineering (CAE) commercial software ABAQUS 6141 has been dedicated as finite element simulation packages for the analysis of this process. Simulation results show that stress distribution over the cavities depends on both pressure and temperature gradient over the contact surfaces and can be considered as the main affecting factor. The acceptable ranges of the cavity stresses were determined according to the following values: the cavity and core region temperature of 55–65 °C, filling time of 10–20 s, ejection pressure 0.85 % of injection pressure, and holding time of 10–15 s. Also, theoretical results reveal that the uniform pressure and temperature distribution can be controlled by adjusting the cavities layout, runner, and gate size. Moreover, the simulation process shows that it is possible to facilitate and identify many difficulties during the process and modify the prototype to evaluate the overall manufacturability before further investing in tooling. Furthermore, it is also concluded that tooling iterations will be minimized according to the design of the selected process
Improving a neural network model for semantic segmentation of images of monitored objects in aerial photographs
Authors: Slyusar Vadym , Protsenko Mykhailo , Chernukha Anton , Melkin Vasyl , Petrova Olena , Kravtsov Mikhail , Velma Svitlana , Kosenko Nataliia , Sydorenko Olga , Sobol Maksym
Published: December 2021

This paper considers a model of the neural network for semantically segmenting the images of monitored objects on aerial photographs. Unmanned aerial vehicles monitor objects by analyzing (processing) aerial photographs and video streams. The results of aerial photography are processed by the operator in a manual mode; however, there are objective difficulties associated with the operator's handling a large number of aerial photographs, which is why it is advisable to automate this process. Analysis of the models showed that to perform the task of semantic segmentation of images of monitored objects on aerial photographs, the U-Net model (Germany), which is a convolutional neural network, is most suitable as a basic model. This model has been improved by using a wavelet layer and the optimal values of the model training parameters: speed (step) ‒ 0.001, the number of epochs ‒ 60, the optimization algorithm ‒ Adam. The training was conducted by a set of segmented images acquired from aerial photographs (with a resolution of 6,000×4,000 pixels) by the Image Labeler software in the mathematical programming environment MATLAB R2020b (USA). As a result, a new model for semantically segmenting the images of monitored objects on aerial photographs with the proposed name U-NetWavelet was built.
The effectiveness of the improved model was investigated using an example of processing 80 aerial photographs. The accuracy, sensitivity, and segmentation error were selected as the main indicators of the model's efficiency. The use of a modified wavelet layer has made it possible to adapt the size of an aerial photograph to the parameters of the input layer of the neural network, to improve the efficiency of image segmentation in aerial photographs; the application of a convolutional neural network has allowed this process to be automatic.
Determination of optimal control of a vessel diesel engine during non-stationary traffic regimes
Authors: Usov Anatolii , Slobodianiuk Mykola , Nikolskyi Mark
Published: December 2021

The high pressure fuel system is the fundamental system that forms the indicator of the minimum fuel consumption per unit of the vessel's path.
The calculation of the optimal control of the vessel complex with the main diesel engine is performed according to the criterion of the minimum fuel consumption per unit path at a given average velocity of the vessel.
The propulsion of a vessel with a main diesel engine is described by equations. The equations contain a significant number of parameters, the reduction of which is performed by introducing dimensionless quantities, followed by bringing the equations into dimensionless forms. This made it possible to present a solution to the optimal control law for the main vessel diesel engine as part of the vessel complex.
Optimal control of the vessel complex under stormy navigation conditions has been investigated. The calculations of the control law of the vessel complex, which ensure the movement of the vessel with the maximum average velocity in conditions of stormy navigation, are presented. It is determined that the established law of control of the vessel complex ensures the minimum fuel consumption per mile at a given average velocity of its movement. The influence of a high-pressure fuel system on the optimal control of a vessel diesel engine has been investigated.
Thus, the calculated studies indicate that for all values of the parameters of the vessel complex according to the law of control of the fuel system Ф=а+b∙C2(τ), they give fuel savings up to 6% per unit of way in comparison with the law of control of the vessel complex Ф=а+b∙(c1(τ)/c2(τ)).
The obtained ratios during modeling and optimal control of the main diesel engine of the vessel complex allow using the dynamic programming method to analyze the fuel consumption per unit path with optimal control compared to the corresponding constant control
Analysis of the spectral properties of wheat growth in different vegetation periods
Authors: Yerzhanova Akbota , Kassymova Akmaral , Abdikerimova Gulzira , Abdimomynova Manshuk , Tashenova Zhuldyz , Nurlybaeva Elmira
Published: December 2021

The article presents a technique for studying space images based on the analysis of the spectral brightness coefficient (SBC) of space images of the earth's surface.
Recognition of plant species, soils, and territories using satellite images is an applied task that allows to implement many processes in agriculture and automate the activities of farmers and large farms. The main tool for analyzing satellite imagery data is the clustering of data that uniquely identifies the desired objects and changes associated with various reasons.
Based on the data obtained in the course of experiments on obtaining numerical SBC values, the patterns of behavior of the processes of reflection of vegetation, factors that impede the normal growth of plants, and the proposed clustering of the spectral ranges of wave propagation, which can be used to determine the type of objects under consideration, are revealed. Recognition of these causes through the analysis of SBC satellite images will create an information system for monitoring the state of plants and events to eliminate negative causes. SBC data is divided into non-overlapping ranges, i.e. they form clusters reflecting the normal development of plant species and deviations associated with negative causes. If there are deviations, then there is an algorithm that determines the cause of the deviation and proposes an action plan to eliminate the defect.
It should be noted that the distribution of the brightness spectra depends on the climatic and geographical conditions of the plant species and is unique for each region. This study refers to the Akmola region, where grain crops are grown
Screening study of the antihyperglycemic action of new solid quercetin dispersions
Authors: Ruban Olena , Kononenko Nadiia , Kovalevska Inna , Chikitkina Valentyna
Published: December 2021

The aim – to screen new solid dispersions of quercetin for the presence of antihyperglycemic action and to identify the most active substances that are promising for the creation of antidiabetic drugs.

Materials and methods. The object of the study was 4 new solid dispersions of quercetin, developed at the National University of Pharmacy. Solid dispersions of quercetin were prepared by the liquid-phase method; hydroxypropyl methylcellulose (HPMC) or polyvinylpyrrolidone (PVP) in ratios of 1:1 and 1:2 were used as a carrier. The antihyperglycemic effect of the studied substances at a dose of 50 mg / kg was assessed in rats by the ability to lower blood glucose levels after carbohydrate loading in a model of impaired glucose tolerance induced by dexamethasone and in experimental type 2 diabetes mellitus induced by dexamethasone.

Results. It was found that with impaired glucose tolerance, a solid dispersion of quercetin with HPMC (1:1) showed a pronounced antihyperglycemic effect – the glucose level 30 minutes after glucose load significantly decreased by 28 % and did not differ from the action of metformin, which was confirmed by the value of the area under glycemic crooked. When solid dispersions with PVP (1:1 and 1:2) were used, the antihyperglycemic effect was less pronounced. In a model of type 2 diabetes mellitus, a significant antihyperglycemic effect was found only in a solid dispersion of quercetin with HPMC (1:1) at the metformin level, which indicates an increase in the solubility and absorption of quercetin.

Conclusions. A pronounced antihyperglycemic effect at the metformin level was found in a solid dispersion of quercetin with HPMC in a 1:1 ratio with impaired glucose tolerance and type 2 diabetes mellitus. It has been proven that a solid dispersion of quercetin with HPMC is a promising substance for creating a monocomponent drug or for inclusion in a new antidiabetic combined drug
Results of public assessment of influence factors on the formation of the brand of the institution of higher education in the pharmaceutical direction
Authors: Kotvitska Alla , Volkova Alina , Yakovlieva Olena
Published: December 2021

The aim of the article is to study the attitude of target audiences to the brand of a higher education institution, taking into account the specifics of the educational services provided to them and the specifics of the educational services market.

Methods of the research: theoretical (analysis and synthesis of scientific literature and normative sources, generalization, analytical, comparative and logical), empirical (descriptions, comparison, questionnaires, mathematical and statistical).

Materials: questionnaires of respondents, which were applicants, students, alumni and employees of NUPh.

Results of the research. According to students, the most significant factors are positive reviews about HEI (14 % of respondents), the quality of educational services and the involvement of well-known scientists and practitioners (12 % each), the presence of scientific schools, traditions and the active participation of the institution in public life (11 % each factor). For applicants, an important place is occupied by the state status of a higher education institution, positive reviews about it and high quality of educational services (13 % for each factor). The advantages that graduates of the prestigious HEI have after graduation are a high level of theoretical knowledge (89 % of respondents) and practical skills (85 %), a high level of competitiveness in the labor market (81 %). Among the main directions for the development and improvement of the educational brand, the interviewed NUPh employees noted the constant improvement of the quality of educational services (91 % of the respondents), the intensification of international cooperation (86 %), the active involvement of practitioners and scientists in the scientific, volunteer and cultural life of the institution (79 %).

Conclusions. It has been proven that an important component of the brand of a higher education institution is an educational service; image of educational services; the benefits to be provided by the brand owner to consumers of educational services. The most significant factors of popularity and positive attitude towards NUPh and the advantages received by graduates after graduation have been established. A conclusion was made about the high level of corporate culture in HEI, the important elements of which are the presence of the NUPh development strategy, the introduction of effective management technologies and the creation of conditions for the self-realization of employees