bluuebunny/crossref_metadata_2025 huggingface dataset:
An insight into conversion of internal combustion engine (ICE) vehicle to electric vehicle for green transportation technology
Authors: Kumbhalkar Manoj , Sardeshmukh Mhalsakant M. , Bhise Dattatraya V. , Choudhari Sumant , Rambhad Kishor S. , Sahare Pramod H. , Ade Narendra K.
Published: August 2023

An electric car is a type of alternative-fuel vehicle that uses electric motors and motor controllers instead of an internal combustion engine. Power is provided via battery packs rather than carbon emission-based fuel. It offers a variety of advantages over typical internal combustion engines, most notably lower local emissions and higher energy efficiency. The aim of this research is to modify the vehicle running with an internal combustion engine into an electric vehicle for transferring material from one place to another inside the industrial area. For this purpose, a Maruti 800 car model has been selected, and during the field work, all unwanted parts of the IC engine are removed to convert it into an electric vehicle. The analytical analysis has been carried out to calculate the power transmission capacity and the speed of the vehicle. The finite element analysis is also carried out to check the strength of reused parts like belt drives and crankshafts. A Simulink model of an electric vehicle is prepared to check its performance and provide suggestions during the vehicle's assembly. The vibration response has proven that the source vibration, the noise, vibration, and harshness (NVH) issues in electric vehicles (EV) differ significantly from those in internal combustion engines (ICE).
Assimilation of advanced manufacturing technologies in small and medium sized enterprises: an empirical analysis
Authors: Bhise Dattatraya V. , Choudhari Sumant A. , Kumbhalkar Manoj , Sardeshmukh Mhalsakant M. Sardeshmukh
Published: August 2023

Small and medium-sized businesses are embarking on an ambitious journey of adopting advanced manufacturing technologies due to increased competition and the desire to remain competitive (AMTs). Global competition is measured in terms of improved quality, lower costs, value for money items, quick service, and variety, all supplied concurrently. Due to resource constraints, implementing advanced manufacturing technology has become a lengthy and complex process for small and medium-sized businesses. As the success or failure of a technology is determined by the implementation methods rather than the technology itself, it is worthwhile to study the practices used by small and medium enterprises while implementing advanced manufacturing technologies. A structured questionnaire was administered to 300 Indian SMEs out of which 126 valid responses were obtained. The data obtained was empirically analysed with SPSS 20.0 to explore the following: AMT enablers, current level of AMT assimilation in SMEs, assimilation pattern differences and key factors for improving AMT implementation effectiveness. Findings of this study shows that there is a very strong correlation (0.896) between two direct advanced manufacturing technologies – Flexible Manufacturing Systems and Computer Integrated Manufacturing. Other significant correlation (0.704) is observed between Robotics and Automated Storage/Retrieval Systems. Also, amongst indirect AMTs our results establish a strong correlation (0.814) between Material Requirement Planning and Computer Aided Design. The result of the hypotheses testing indicates that 43.1 % of the performance of the SMEs is explained by AMTs. The findings of this study will help SMEs in the effective assimilation of AMTs.
Ayurvedic treatment of a case diagnosed as AIDS and diffuse large B cell lymphoma - Case report
Authors: Dixit Upendra , H. K. Shashirekha , Bargale Sushant Sukumar , Gaikwad Asmita , Deshpande Mahesh , Tare Harshal
Published: August 2023

Non-Hodgkin's lymphoma (NHL) is recognized as the most common form of lymphoma. Among the various subtypes of NHL, diffuse large B-cell lymphoma (DLBCL) stands out as the predominant type, constituting approximately 30 percent of all lymphomas. DLBCL has an annual incidence rate of 2.9 per 100,000 in men and 1.5 per 100,000 in women in India. It is a rapidly growing and aggressive form of NHL. A 40-year-old male patient presented with a chief complaint of abdominal pain and discomfort persisting for 4-5 months. The patient had previously been diagnosed with AIDS (Acquired immune deficiency syndrome - a retroviral disease) and non-Hodgkin's lymphoma Diffuse Large B-Cell Lymphoma (DLBCL) on 29-04-14. Ileal resection had already been performed on 20-01-2014, and the patient received the initial cycle of CHOP (cyclophosphamide, doxorubicin [Adriamycin], vincristine [Oncovin], prednisolone) chemotherapy on 02-04-14. The MIB index was measured at 70%. The report on 22-04-14 indicated the presence of a few enlarged lymph nodes scattered in the mesentery and paraaortic regions. The patient declined further cycles of chemotherapy. Based on Ayurvedic diagnosis, the patient initially exhibited symptoms resembling Arsha (hemorrhoids) and Gulma (tumor), followed by Grahani Daurbalya (improper digestion). At the time of examination, he had severe Pandu. Considering the pathology and symptomatology, a prescription of Heeraka Bhasma + Chaturmukha Rasa, Triphala + Kapardika Bhasma + Panchamrita Parpati + Patola (Trichosanthus cucmerina) + Dhanvayasa (fegoniacretica), TapyadiLoha + Navyasootashekhara + Vanga + Asthimajja Pachaka (Guduchi + Amalaki + Musta) + Kukkutanakhi (Tectaria coadunate) along with 10 ml of Rohitakarishta and Krimikuthara Rasa was prescribed. After seven months of treatment, the symptoms subsided. No adverse events were reported during the seven-month treatment and follow-up period. In conclusion, this case study demonstrates the safe and effective treatment of these diseases using Ayurveda. It improved the patient's health and quality of life, resolving the issue of swollen lymph nodes. The patient survived for over four years thereafter.
Energy consumption, economic growth and CO2 emissions in Azerbaijan
Authors: Guliyeva Shafa
Published: August 2023

The primary goal of this research is to investigate the link between carbon dioxide emissions, energy consumption, and economic growth in Azerbaijan. Azerbaijan's economy is growing, and people have noticed that the country is using more energy. However, the issue of how this increase affects carbon dioxide emissions is controversial. The analyzes show that there is a linear relationship between energy consumption and carbon dioxide emissions. That is, as energy consumption increases, carbon dioxide emissions also increase. In addition, it is stated in the study that Azerbaijan focuses on fossil fuels in energy production and that this situation has an impact on carbon dioxide emissions. Policies such as increasing the use of renewable energy sources and increasing energy efficiency in Azerbaijan can help reduce carbon dioxide emissions. Finally, the Azerbaijan analysis shows that there is a linear relationship between energy consumption and carbon dioxide emissions, and policies such as the use of renewable energy sources and increasing energy efficiency can help reduce carbon dioxide emissions.
Reliability approximation analysis of formulated mathematical models in pedal powered bamboo slivering operation
Authors: Undirwade Siddharth
Published: August 2023

This paper presents the reliability approach of formulated mathematical models as well as clubbed models to examine the effects of input factors over the responses of human powered bamboo slicing phenomena. Mathematical models as well as clubbed models were developed for operational time required to cut the bamboo slivers, number or quantity of slivers to be cut and torque (resistive) required for slivering operation run by human powered flywheel motor (HPFM). Experimental data based models evolved represent various responses or output of human powered bamboo slicing phenomena. Design and fabrication of experimental set up was carried out and proper instrumentation was also decided. Design data for sliver cutting was established by the way of performing extensive experimentation. The response data was gathered which was generated by using a wide range of different independent factors by varying them. Performance characteristics were validated on the method of experimentation. The models were optimized. The reliability estimation and analysis of sensitivity was carried out for checking the effect (behavior) of various input parameters with respect to output response parameters. However, this paper entirely presents analysis of reliability evaluation of created models for various operational parameters in human powered bamboo slicing phenomena.
The impact of credit volume on money supply and economic growth in Azerbaijan: an econometric analysis
Authors: Zeynalova Aynur
Published: August 2023

Banks are one of the financial entities that perform the work of financial intermediation and, as a result of the loans they provide, help to promote productivity, jobs, and economic development. By increasing their lending volumes, banks will be able to expand their money supply, which will result in a boost to the economy's overall performance. Therefore, substantial research has been carried out to identify the relationship among bank loans as well as economic progress. This study aims to analyze the link among loan volume & money supply in the economy of Azerbaijan. As a method, FMOLS, DOLS and Granger Causality tests, which show co-integration, causality and correlation coefficient from econometric models, were chosen for the data containing quarterly time series of 2006:M1-2021:M9 period. There is a one-way causal connection between money supply and domestic credit volume, so there is a one-way causal correlation among economic growth and domestic credit volume resulting from the findings. It was also discovered that there is a long-term link between the quantity of money and credit accessible to citizens in their nation and the rate at which their economy expands. On the basis of FMOLS test, a 1 percent increase in domestic loan volume results in a 1.078183 percent increase in the money supply. (1.022554 according to DOLS). Performing the FMOLS test does not affect economic development. The FMOLS test found that for every one percent increase in domestic loan volume, economic growth improves by 0.44243 percentage points, based on the number of domestic loans (0.439953 percent according to DOLS).
Mosque-based youth leadership cadre
Authors: Udin Udin , Fitriah Fitriah , Sugianto La Ode , Khairunnisa Rifda , La Ula Hesty , Ihsaniati Namira Sofa Nur , Wijayanto Wahyu
Published: August 2023

The mosque is one of the most important places for the Muslim community to practice religious values (such as prayer and remembrance), which are also integrated with muamalah in their daily lives. However, in this era of modernization, there is a phenomenon that is quite strange and occurs in big cities like Yogyakarta, namely the decreasing awareness and interest of youths to visit mosques. When youths are away from the mosque, they tend to be free from control to engage in immoral behavior, for example, engaging in acts of delinquency. Therefore, an alternative model that is offered and can be used to overcome juvenile delinquency is to make the mosque a place for character building and the cadre of youths. Youth development in mosques aims to explore youth resources born from mosque-based programs to create youth who have noble and Qur'anic morals who can make a positive contribution to the benefit and welfare of society as a whole. Because historically, the mosque at the time of the Prophet Muhammad played a very important and broad role, that is, the mosque did not only function as a place of worship (such as praying, praying, and remembrance), but the mosque also functioned as a place for education and coaching of the people, a place for military training and preparation for war, a place to reconcile and resolve disputes, a place to receive envoys or delegates, a place to provide social assistance, and as a centre for enlightenment and defence of religion to build a glorious civilization.
Perceptions toward achieving work-life balance and job satisfaction in online teaching
Authors: Cusipag Maria N. , Oluyinka Solomon , Bernabe Maria Teresa N. , Bognot Filipinas L.
Published: August 2023

Online teaching has been implemented in the Philippines as a consequence of the critical global crisis that started in early 2020. Many higher education institutions still conduct online classes. However, research studies on employer’s support, workspace, and attitudes of students in relation to work-life balance and job satisfaction of teachers teaching online have been rarely explored, creating a gap in this area. Thus, the major objective of this study is to examine the perceived effects of employer’s support, workspace, and attitudes as teachers pursue work-life balance and job satisfaction in their online teaching job. A total of 256 responses extracted via the Google form link were analyzed with the aid of Smart PLS. Seven of the eight hypotheses tested were supported where p< 0.025, while one was not supported where p > 0.05. The findings revealed that work-life balance is positively influenced by workspace but not students’ attitudes; job satisfaction may be affected by workspace but not work-life balance and full support from an employer; and teaching online is positively affected by workspace and employer’s support but not students’ attitudes.  In conclusion, teachers who teach online experience challenges but  still manage to attain work-life balance and satisfaction from their job. For students who exhibit negative attitudes, this implies that teachers need to talk with them and find out their reasons for doing so. Making their lessons more interesting could minimize such problem. It is highly recommended that future researchers consider adding varied statistical tools, wider sampling of schools for their participants,   and more teachers from community colleges and degree programs of higher education institutions. In order to validate the findings shown in the study, a replication may also be performed in a different region in the country.
Investigation of alloy materials on a sports bike wheel rim designs using finite element analysis
Authors: Padmanabhan S. , Boopathi Balaji , Kumar K. M. , J. R. Deepak , T. Vinod Kumar , S. Baskar
Published: August 2023

Investigators are dedicating more work to the creation of lightweight vehicles as a result of the rising emphasis placed by the automotive industry on energy efficiency and environmental responsibility. While developing a wheel, it is important to keep both technology and safety considerations in mind simultaneously. Alloy materials are commonly used in the design of sports bike wheel rims due to their lightweight, strength, and durability. The ultimate goal of this study is to lay the groundwork for coming up with new designs for wheels and spokes that can be used on sports bike. In this work, it would be possible to compare how alloys of magnesium and titanium respond to stress and strain compared to structural steel materials. Using an equivalent stress and deformation investigation, two modern designs of wheel spokes for the sports bikes and three materials were compared. This study makes some insightful projections about the reliability of the structural design and provides useful references for the manufacture of alloy wheels. According to the stress analysis, the Ti alloy produces a stress concentration that is about 0.5% lower than on Model A and around 1% lower value for stainless steel on the Model B wheel rim design. Mg alloy has a deflection of about 77% and 53% more than stainless steel and titanium alloy, respectively, in the construction of the model A and B wheel rim.
Assessment of prevalence and pattern of comorbidities in hospitalized patients with uncontrolled hyperglycemia in Western Odisha
Authors: Sahoo Bishwa Ranjan , Mohapatra Gurukrushna , Mohapatra Jigyansa , Mohapatra Namita
Published: August 2023

Diabetes, especially type 2 diabetes, is one of the main global health problems and accounts for the highest morbidity and mortality worldwide. Due to its significant impacts on human life in terms of morbidity and health expenditures, diabetes has become a major public health concern worldwide. Apart from microvascular and macrovascular complications, other comorbidities found frequently in patients with diabetes are hypertension, obesity, chronic kidney disease, stroke, coronary heart disease, hypothyroidism, rheumatoid arthritis, chronic pulmonary disease and cancer. This was a hospital-based cross-sectional study to assess comorbidities in indoor patients of the Department of Medicine. All patients admitted with a history of diabetes or newly detected diabetes were identified, and relevant information was collected in a predesigned and pretested questionnaire. A total of 320 patients were assessed during the study period, of whom 52% were males and 48% were females. Most patients were in the age group of 51-60, followed by the 61-70 and 41-50 age groups. Hypertension was the most prevalent comorbidity, followed by dyslipidemia and chronic kidney disease. Approximately 42% of patients had one comorbidity, and 37% had two comorbidities simultaneously. The prevalence of comorbidities was higher and glycemic control was more compromised in those who had diabetes for a prolonged period.
The Effect of Radio Broadcasting, Nganggung Traditional, Local Influencer, and Education to Sharia Financial Literation’s Level of Central Bangka’s Society
Authors: Syamlan Yaser Taufik , Erwinsyah Riyan
Published: August 2023

This research was conducted to see the influence of Radio Broadcasts, Traditional Singing, Local Influencers, and Education on the Level of Islamic Financial Literacy in the People of Central Bangka. This type of research is a quantitative study using the regression analysis model. To measure the dependent variable indicators the ordinal scale is used (0-1), and the independent variables are using the Likert scale (1-4). The results of this study indicate that the results of simultaneous testing show that all variables have a significant effect on Islamic financial literacy. This can be seen from the results of the Chi-Square test. However, in the significance test, one of the variables was not significant, namely education, only 3 variables had a significant effect, namely radio broadcasts, local influencers, and culture (nganggung). Based on these statistical results, it can be understood that through radio broadcasts with sharia economic programs, the public gets important information about this matter. Likewise, influential figures such as traditional leaders, community leaders, and religious leaders who have adequate sharia economic insight will contribute to increasing sharia economic literacy. Through the Nganggung Culture, the community will receive this information more quickly.
A single hidden variable interpretation of the quantum wave function
Authors: Gentile David
Published: August 2023

An interpretation of quantum mechanics is presented in which there is one hidden variable. While this number of hidden variables is insufficient to explain Bell nonlocality, it can help solve the measurement problem. It also provides an explanation of the delayed choice quantum eraser experiment that is more intuitive than current explanations. In addition, a theory of nonlocality emerges directly from its assumptions. The key idea is that from the perspective of an outside observer, not entangled with an observed system, we treat all interactions within the system as unitary. However, from the perspective of an “observer” inside the system, entangled with the system, we treat all new entanglements as “micro-observations” and as a projection onto some basis of measurement. One particle can “observe” another. Thus, particles will have a defined value on one measurement basis from the inside perspective. This means that the wave function, from the outside view, will at times describe an objective uncertainty, at other times a subjective uncertainty and at yet other times a combination of both. The standard wave function describes the total uncertainty, the minimal uncertainty that is present for any observer outside of the system, while for an observer inside the system, only the objective part of the uncertainty remains, and this can be described by an inner wave function. The hidden variable is invisible to the outside observer.
Crime Prevention through Environmental Design in Healthcare Facility: A Case Study of Sehat Al Sharq at Al Khobar, KSA
Authors: Ahmad Safeer , Verma Tanaya , Kamal Mohammad Arif , Anwar Tarique
Published: August 2023

This paper shall cover the existing theories and practices in the field of Crime Prevention through Environmental Design with a special focus on Healthcare Projects. The intention is to address the gap between theory and practices. Safety & Security is one of the basic human needs for peaceful existence. Patient safety and security have always been concerns in the successful operation of a healthcare setup. Nowadays, patient-centric healthcare service has given a competitive edge to the hospital; therefore, safety against crime has become very crucial for the hospitals. Other than the patients, safety and security for staff and visitors are equally important. Safety from data theft and breaches of privacy are other concerns in the healthcare setup.

The design approach of best practices, like Crime Prevention through Environmental Design, seeks to create safer spaces through detailed design principles and strategies, and guidelines issued by the International Association for Healthcare Security and Safety. The majority of evidence suggests that designing the physical environment while considering safety features like Access Control, CCTV, Ultrasonic Occupancy Sensor, Public Addressable System & Duress Alarm for healthcare setup, duress alarms have proved to be life-saving measures that are used to alert hospital staff and security personnel when an individual is in need of emergency.

In this paper, qualitative research methodology is used as a case study and physical observations to collect qualitative data and analysis of Sehat Al Sharq Hospital, Al Khobar, KSA, shall be included to identify and propose solution factors affecting the design challenges related to CPTED. Furthermore, it aims to recommend a roadmap to address design constraints, optimize efficiency, and improve safety and patient care in the healthcare facility.
Effect of Gross Profit Margin and Dividend Policy on Stock Price (Case Study of Food and Beverage Companies Listed on the IDX for the 2016-2021 Period)
Authors: Nur Latief Z. , Riyadi Wulan , Hernita Nita
Published: August 2023

In addition to rising demand for these products, an increasing number of financiers are eyeing the food and beverage business as a promising place to put their money. The value of the stock price is still the prima donna and the benchmark for them to determine the value of the investment they will take. The purpose of this research is to analyze the 2016-2021 performance of the IDX food and beverage sector in relation to gross profit margin and dividend. Forty food and beverage companies from the Indonesia Stock Exchange (IDX) were included in the study population. The sample used is company financial data. Using purposive sampling technique, 7 food and beverage companies with an observation period of 6 years (7x6=42) meet the criteria to be sampled in this study, so that a total sample of 42 financial data is obtained. which was sampled. Model feasibility and hypothesis testing, as well as the more traditional assumption test, are among the analytic methods employed. Based on the findings of this research, the Gross Profit Margin has no significant impact on stock prices for food and beverage businesses listed on the IDX during the 2016-2021 period, but the Dividend Policy has a positive and significant impact on stock prices during the same time period.
Аналіз впливу мотогондоли на силу тяги вентиляторного контуру турбовентиляторної приставки
Authors: Maiboroda Roman
Published: August 2023

The subject of this study is the interaction between the engine nacelle of a three-circuit turbojet engine and a turbofan attachment. The object of this research is a model of a cylindrical engine nacelle and a fan part of the impeller of a turbofan attachment. The aim of this study was to evaluate the influence of the engine nacelle on the thrust force of the fan circuit of a three-circuit turbojet engine, taking into account the influence of the operation of the turbofan attachment. Tasks: to simulate the flow around the engine nacelle with a turbofan attachment and without a turbofan attachment; calculate the thrust force of the turbofan attachment. The studies were carried out using the method of numerical experiment. The system of Navier-Stokes equations was closed by the turbulent viscosity model SST Gamma Theta Transitional No. 4. The results of the study showed that the reactive thrust of the fan circuit of the turbofan attachment increases by 0.87-6.15% when operating at an altitude of 0 km, 9 km, 11 km and the range of Mach numbers at the input from 0.2 to 0.5. When flowing around the engine nacelle without taking into account the influence of the turbofan attachment, it is characteristic that the velocity field at the inlet is uniform, except for the zone with a boundary layer near the surface of the engine nacelle. However, during operation of the turbofan attachment, the flow pattern changes radically and the thickness of the boundary layer decreases, and the flow in front of the fan is uneven. A characteristic feature of the turbofan attachment, which is associated with the heating of the intermediate housing between the turbine and fan housings, has a positive effect on reducing the thickness of the boundary layer, wall heating contributes to an increase in the stagnant flow velocity due to viscous forces. The presence of a boundary layer on the engine nacelle does not adversely affect the flow in the fan circuit of the turbofan attachment, and the fan of the turbofan attachment does not adversely affect the engine gas generator. The scientific novelty and practical significance of this work lies in obtaining new data on the effect of the engine nacelle on the thrust force of the fan circuit of a three-circuit turbojet engine, taking into account the influence of the operation of the turbofan attachment. The results obtained can be used to optimize the turbofan attachment of a three-circuit turbojet engine.
Моделі дослідження стійкості високотехнологічних виробництв в сучасних політико-економічних умовах
Authors: Fedorovych Oleg , Slomchynskyi Oleg , Yelizieva Alina , Smidovych Leonid , Yashina Elena
Published: August 2023

The task of studying the stability of high-tech enterprises (aviation, space, engineering industry) to the manifestation of threats and the occurrence of losses (economical, technological, etc.) is formed and solved. The relevance of this study is connected with the increasing risks that arise in the external environment and lead to the degradation of high-tech enterprises. The risks of functioning and development of high-tech enterprises connected with modern political and economic threats and the consequences of war are analyzed. It is concluded that the stability of high-tech production is one of the actual problems of restoring the country’s economy in the post- military period. Therefore, the topic of the proposed article is relevant, which explores possible ways to ensure the resilience of high-tech enterprises in the conditions of the turbulence of the world economy and the difficulties that arose as a result of the martial law of the country. An analysis of the direct security of the sustainability of high-tech enterprises in the post-military period is carried out. The possible expenses for the security and stability of the enterprise in the conditionals of the risks of causing possible threats (political and economic, climate, terrorist, military) are modeled. A model for the study of logistics processes, the formation of new supply chains of components, in the event of a delivery disruption, has been created. The expenses of restoring the supporting infrastructure of the enterprise because of the consequences of martial law and the aggressor’s actions are analyzed. The process of relocation (evacuation) of enterprises to new places is modeled as an example of ensuring the sustainability of enterprises during the war period. A simulation model is created to study the impact of threats and the emergence of expenses, to adopt preventive measures to ensure the sustainability of an enterprise. The scientific novelty of this study is connected with the development of a set of models that help to directly study the stability of high-tech enterprises to contemporary challenges and threats. The results of the research can be useful for modeling preventive action plans before the appearance of threats and expenses that improve the stability and reliability of the functioning of high-tech enterprises.
Характеристики повітряного гвинта квадрокоптера
Authors: Balalaieva Kateryna , Balalaiev Anton , Golembiyevskyy Grygoriy , Kovtun Artem
Published: August 2023

The subject of the study is the characteristics of the quadrocopter propeller. The object of the study is a two-blade propeller of a quadrocopter. The aim of this study was to evaluate the efficiency, acoustic characteristics of the propeller of a quadrocopter and optimize the angles of laying out carbon fiber with minimization of deflection. To achieve this goal, the following tasks were solved: simulation of the flow in a two-blade propeller of a quadrocopter in a given range of rotation frequencies; calculation of the efficiency of a two-blade propeller of a quadrocopter; calculation of the level of acoustic pressure of the studied propeller; and calculation of the deflection of a two-blade propeller of a quadrocopter at different angles of carbon laying out. The study of the flow in the propeller was carried out using the method of numerical experiment. The calculation for the deflection was carried out on the basis of the aerodynamic characteristics of the propeller using the method of a numerical experiment. The level of acoustic pressure L was estimated at 1 m from the source of acoustic radiation (screw). Results: the optimal mode of operation with a maximum efficiency is observed at a speed of 9000 rpm. and reaches a value of 0.853. At the minimum investigated speed of 3000 rpm. The propeller efficiency has the lowest value and is 0.638. With an increase in the speed of the rotor of the engine, the efficiency of the propeller gradually increases. With the increase of rotational speed from 9000 rpm. up to 10000 rpm. the efficiency decreases from 0.853 to 0.833. Estimation of the level of acoustic pressure of the studied two-bladed propeller showed that the rotation frequency had a significant effect on the level of acoustic pressure of the propeller. With an increase in rotational speed from 3000 rpm. up to 10000 rpm. propeller acoustic pressure-level increases from 56.62 dB to 90.57 dB. The calculation results showed that the deflection of the propeller blades under study depends on the laying angles of the carbon fiber layers. Blade deflection varies from 0.76 mm to 0.821 mm. The greatest deflection of the blades was achieved with the option of laying out layers of carbon fiber 0°/30°, the smallest - at angles of 0°/80°. The scientific novelty and practical significance of the conducted research is that new data on the characteristics of a two-blade quadrocopter propeller have been obtained. The data obtained will help create and optimize the parameters of a two-bladed quadrocopter propeller.
Особливості застосування альтернативних палив у теплових двигунах
Authors: Andriets Oleksandr , Shevchenko Oleh , Ohmakevych Valery , Khyzhniak Mykhailo
Published: August 2023

The subject of the study is the use of alternative fuels and hydrogen in heat engines in different concentrations at different operating modes. The purpose of this study is to decarbonize various types of transport, especially aviation, to increase the energy efficiency and environmental performance of heat engines. Task: to investigate the use of such alternative fuels as biofuels, synthetic fuels, hydrogen and hydrogen mixtures. The use of aviation fuels shows that they must satisfy the relevant requirements, so the choice of alternative fuels must satisfy these requirements with the improvement of their characteristics, first in terms of energy efficiency and environmental indicators. To do this, starting with the ground test of a modern aircraft engine, Rolls-Royce conducted tests on an early conceptual demonstrator using green hydrogen. Green hydrogen was created by wind and tidal energy to prove that hydrogen could be the zero carbon aviation fuel of the future with zero carbon emissions. After analyzing the early ground test concept, the developers are planning a series of further bench tests leading to a full-scale ground test of a green hydrogen jet engine with the goal of achieving zero net carbon emissions from the engine Research Methods. According to the recommendations of the IPCC on the use of scarce fuel, the coefficients of harmful emissions (EI) are calculated for some types of aircraft for the Landing Take Off (LTO) cycle (landing / takeoff). Harmful emissions are calculated using the same method when alternative fuels are used in engines Since jet fuel emissions play an important role in the greenhouse effect, new technologies are being introduced to reduce emissions, among which one of the most effective and environmentally friendly is the use of biofuels, as biofuels are produced using modern biological processes. In this study, an experimental study of the influence of hydrogen addition on a traditional internal combustion diesel engine was conducted. The results. It was determined that the supply of small additions of gaseous hydrogen to the diesel manifold increases the efficiency of the engine at nominal and, largely, at partial modes of operation. The environmental parameters of the diesel engine are improved: the concentration of nitrogen oxides in the exhaust gases decreases, the soot content decreases by 30-40% and by 35%. A calculation method for the quantitative assessment of harmful emissions when using alternative fuels in aircraft engines is defined. Conclusions. The practical significance of the obtained results is that the obtained dependencies can be used when choosing the type of fuel for heat engines and determining the optimal concentration of an alternative fuel such as hydrogen to increase energy efficiency and improve the environmental performance of heat engines.
Development of the helicopter turboshafted engine regulator
Authors: Ranchenko Gennadii , Buryachenko Anna , Grudinkin Viacheslav , Burunov Dmitriy , Danilov Vsevolod
Published: August 2023

The subject of research was the development of the RDC-450M-117V – the TV3-117VMA-SBM1V digital engine regulator – based on the RDC-450M previously created at the enterprise for the AI-450M engine, considering differences in engine characteristics and exploitation conditions. The work purpose was to develop RDC-450M-117V based on information about aircraft engine characteristics, including refinement of its mathematical model based on experimental data, taking into account the exploitation condition difference. The tasks faced by the developers were to determine the optimal regulator structure in view of exploitation conditions, refine the mathematical model of the engine, and study the characteristics of the pump-regulator, to select the optimal processing form for the signal of rotation sensors for torque measurement. The methods that were applied were experimental engine and pump-regulator characteristics study on the stands of JSC "Element", JSC "Motor Sich", and on pump-regulator manufacturer’s stands; processing of experimental data using numerical simulation with subsequent statistical analysis. The rotation sensors signals experimental data (waveforms) were studied using a quantitative analysis method. The results. Design and software documentation was developed considering the requirements of international standards DO-254 and DO-178C, and a prototype of the regulator new modification was made. The engine mathematical model was refined, on the basis of which the stand-imitator of aircraft engines was finalized for a new type of engine. An adaptive algorithm for controlling the pump-regulator was developed, which made it possible to ensure stable maintenance of fuel consumption, despite the unstable operation of the pump-regulator. Using a quantitative analysis of the torque sensor signal waveforms, characteristic points were found that ensure the choice of the optimal level of comparison (measurement). The pilot regulator prototype passed tests including electromagnetic compatibility and lightning resistance in specialized laboratories in Ukraine. The regulator was tested as part of the engine at the Motor Sich JSC stands and as part of a helicopter at the foreign customer site, including the first demonstration flight. The scientific novelty of the obtained results are: the clarified engine TV3-117VMA-SBM1V mathematical model was formed and implemented in a stand-imitator; the adaptive algorithm for controlling the pump-regulator was formed and allowed to provide stable fuel consumption maintenance, despite the pump-regulator unstable operation; and the optimal processing form for the signal of rotation sensors for measuring torque was selected. Practical significance. A new engine regulator was developed and tested, and it provided the first helicopter demonstration flight.
Аналіз впливу місця впорскування води на характеристики турбореактивного двоконтурного двигуна з форсажною камерою згоряння
Authors: Ulitenko Yurii , Minenok Maryna , Kravchenko Igor
Published: August 2023

An important direction for the development of high-speed aircraft is the expansion of the range of operation of aircraft engines as part of their power plants. Currently, the range of operation of aircraft engines in terms of altitude and flight speed is limited by the ability of construction materials to withstand the temperature of the working body. Therefore, to expand the range of operation, it is necessary to either change the construction materials or use technologies that involve cooling the working body. The water injection system in a turbofan engine with an afterburner allows cooling of the working body without significant interference with the structural profile of the engine, which significantly saves design time and development cost. In addition, water injection has long been used for a short-term increase in engine thrust, which is an additional advantage of using this system. The choice of the place of water injection into the engine tract has a great influence on its characteristics and on the ability of the high-speed aircraft to perform the assigned tasks. Therefore, the design of the engine must take place with an understanding of the intended purpose of the high-speed aircraft. This article analyzes the influence of the place of water injection on the characteristics of a turbofan engine with an afterburner. I will consider water injection at the inlet to the fan and at the inlet to the high-pressure compressor. The influence of injection site and flight conditions on water consumption is shown. Operating conditions were found in which it is impossible to use a turbofan engine with an afterburner due to restrictions not related to the temperature of the working fluid. The results of calculations regarding the influence of the water injection site on the main thermodynamic parameters and traction characteristics of the engine are given. The application of the obtained results will increase the thermodynamic efficiency and extend the operating range of two-circuit turbofan engines with afterburners using modern materials. The results of this work will also make it possible to shorten the period of development of competitive engines for high-speed aircraft through a targeted search for their rational thermodynamic and structural-geometric outline.
SELF EFFICACY SISWA SD KELAS 5 TERHADAP PRESTASI BELAJAR DIKELASNYA DI SD N 5 JINENGDALEM
Authors: Megaputri Putu Sukma , Ariswari Ni Putu Lidya
Published: August 2023

Kompetisi pada generasi muda saat ini sangat tinggi sehingga perlu menyiapkan siswa sejak dini untuk semakin mengasah kemampuan, kepercayaan diri agar prestasi baik akademik maupun non akademik meningkat. Tujuan penelitian ini adalah menganalisis hubungan self efficacy siswa terhadap prestasi belajar mereka yang dinilai dari nilai tengah semester (PTS). Metode penelitian ini adalah kuantitatif dengan pendekatan cross sectional dengan sampel yang diambil dari kelas tinggi untuk persiapan ujian yaitu kelas 5 dan 6 sebanyak 30 siswa. Teknik sampling menggunakan purposive sampling, selanjutnya data dilakukan analisis menggunakan rank spearmen untuk menilai arah hubungan dan kekuatan hubungan efikasi diri dengan prestasi belajar siswa. Hasilnya dilaporkan bahwa terdapat hubungan efikasi diri dengan prestasi belajar siswa di SD N 5 Jinengdalem dengan nilai rho 0,53 dan hasil ini signifikan secara statistic dengan nilai p < 0,05. Kesimpulannya bahwa semakin tinggi efikasi diri siswa secara otomatis meningkatkan prestasi belajar siswa
СТАТИСТИЧНА КВАЛІМЕТРІЯ ЗМІСТУ ТА РЕЗУЛЬТАТІВ ПІДВИЩЕННЯ КВАЛІФІКАЦІЇ БУХГАЛТЕРІВ СУБ’ЄКТІВ ДЕРЖАВНОГО СЕКТОРУ
Authors: Краєвський Володимир , Бардаш Сергій
Published: August 2023

З урахуванням завершення процесу трансформації бухгалтерського обліку в державному секторі актуалізується необхідність підвищення кваліфікації бухгалтерів суб’єктів державного сектору. В статті доводиться доцільність, визначаються вимоги до змісту, а також напрямки та підходи до оцінки якості підвищення кваліфікації. Визначено рівень вивчення та розв’язання проблем трансформації бухгалтерського обліку в державному секторі, викладено сучасні вимоги до змісту підвищення кваліфікації бухгалтерів державного сектору, напрямки кваліметрії освітніх послуг. Визначено спосіб та зміст інформаційного забезпечення статистичної кваліметрії змісту та результатів підвищення кваліфікації. На прикладі апробованої сертифікованої програми підвищення кваліфікації облікового персоналу суб’єктів державного сектору наведена методика статистичної кваліметрії її змісту та результатів.
ТЕОРЕТИЧНЕ ОБҐРУНТУВАННЯ СУТНОСТІ ПОНЯТТЯ «ЕЛЕКТРОННА КОМЕРЦІЯ»
Authors: Садчикова Ірина , Тарасенко Артем , Дубина Максим
Published: August 2023

В межах даної статті були розкриті наукові підходи щодо визначення сутності поняття «електронна комерція». Було виділено ключові характеристики електронної комерції за такими підходами, як: організаційний, процесний, функціональний, комунікацій та часово-просторовий, що дозволило сформовати авторське визначення даної категорії. Також були розкриті рівні функціонування електронної комерції: перший рівень – Інтернет-комерція; другий рівень – електронна комерція; третій рівень – електронний бізнес. Визначено основних учасників електронної комерції, а саме: підприємства або компанії, споживач та уряд. Після проведеного дослідження було виділено ряд особливостей, які притаманні електронній комерції – це зручність, цілісність, безпека, координація та наявність спеціалізованого обладнання та програмного забезпечення, яке дозволить надійний доступ до мережі Інтернет.
Проблеми цивільного права у постпандемічну добу : матеріали круг. столу (м. Одеса, 26 травня 2023 р.)
Authors:   Національний університет «Одеська юридична академія»
Published: August 2023

Збірник містить тези доповідей учасників круглого столу, який відбувся 26 травня 2023 року, а саме: тези науково-викладацького складу кафедри цивільного права та кафедри права інтелектуальної власності і патентної юстиції Національного університету «Одеська юридична академія», а також запрошених науковців з інших закладів вищої освіти. Матеріали цієї збірки можуть стати корисними для всієї наукової спільноти.
The Positive Chinese Women Image in the 21st Century from the Perspective of Multimodal Analysis in the Milk Advertising Discourse ---Take Two Milk Brands as Examples
Authors: Mi Cheng
Published: August 2023

This paper is a multimodal analysis of women image in milk advertisement, including the analysis of Bright Dairy advertisement of Chinese women volleyball team and the analysis of Mengniu advertisement of Eileen Gu. By applying multimodal method, the author analyzes these two milk ads respectively to point out that the milk ads in the 21st present a positive women image. In these ads, women are portrayed as courageous, independent, indomitable and perseverant.
Lab on a rod: Size-based particle separation and sorting in a helical channel
Authors: Palumbo Joshua , Navi Maryam , Tsai Scott , Spelt Jan K. , Papini Marcello
Published: August 2023

Size-based particle separation using inertial microfluidics in spiral channels has been well studied over the past decade. Though these devices can effectively separate particles, they require a relatively large device footprint with a typical outer channel radius of approximately 15 mm. In this paper, we describe a microfluidic device with a footprint diameter of 5.5 mm, containing a helical channel capable of inertial particle separation fabricated using abrasive jet micromachining. The separation of particles in several channel geometries was studied using wide-field fluorescence microscopy. A maximum separation efficiency of approximately 90% was achieved at a flow rate of 1.5 ml/min with a purity of approximately 95% at the outlet, where large particles were collected. An accompanying computational fluid dynamics model was developed to allow researchers to quickly assess the separation capability of their helical or spiral devices.
A novel abrasive water jet machining technique for rapid fabrication of three-dimensional microfluidic components
Authors: Azarsa Ehsan , Jeyhani Morteza , Ibrahim Amro , Tsai Scott , Papini Marcello
Published: August 2023

Microfluidic lab-on-a-chip devices are usually fabricated using replica molding, with poly(dimethylsiloxane) (PDMS) casting on a mold. Most common techniques used to fabricate microfluidic molds, such as photolithography and soft lithography, require costly facilities such as a cleanroom, and complicated steps, especially for the fabrication of three-dimensional (3D) features. For example, an often-desired 3D microchannel feature consists of intersecting channels with depth variations. This type of 3D flow focusing geometry has applications in flow cytometry and droplet generation. Various manufacturing techniques have recently been developed for the rapid fabrication of such 3D microfluidic features. In this paper, we describe a new method of mold fabrication that utilizes water jet cutting technology to fabricate free-standing structures on mild steel sheets to make a mold for PDMS casting. As a proof-of-concept, we use this fabrication technique to make a PDMS chip that has a 3D flow focusing junction, an inlet for the sample fluid, two inlets for the sheath fluid, and an outlet. The flow focusing junction is patterned into the PDMS slab with an abrupt, nearly stepwise change to the depth of the microchannel junction. We use confocal microscopy to visualize the 3D flow focusing of a sample flow using this geometry, and we also use the same geometry to generate water-in-oil droplets. This alternative approach to create microfluidic molds is versatile and may find utility in reducing the cost and complexity involved in fabricating 3D features in microfluidic devices.