bluuebunny/crossref_metadata_2025_split huggingface dataset:
Identification of Damage on Stringers By the PSO Method
Authors: Marton Martin , Sokol Milan , Bekö Adrian , Maosen Cao 
Published: October 2021

Abstract
The paper employs the particle swarm optimization (PSO) method for the identification of damage to a stringer web. This method is inspired by a swarm of bees or flock of birds which look for a common solution. It is a heuristic method, that utilizes a particle as a problem-solving candidate. The location of this particle in the search space represents the configuration of all the variables to possible solutions of the problem. As the particle moves into the solution space, the values of the variables change. The particle is defined by a position vector and a velocity vector. The resulting direction of the particle is determined by three components i.e. (1) the moment or inertia, (2) autobiographical or cognitive information and (3) social interaction. The quality of the particle is evaluated by a comparison function.
In this study we tried to locate damage by using this method. The damage is represented by a rusted area on a stringer web, which was simulated as a change in the Young’s modulus. We used the modal calculation of the eigenfrequencies as an evaluation function.
Effect of Glazed Loggias on the Energy Efficiency of a T08b Prefabricated Dwelling – A Case Study
Authors: Ruhig Roman , Ruhigová Ema 
Published: October 2021

Abstract
The topic focuses on current solutions of interspaces in the renovation and modernization of residential buildings, the design of which is conditioned by the principles of sustainable development and construction. It concerns the integration of closed interspaces in renovated buildings from the 1950s to the 1980s. One example is the frequent glazing of loggias/balconies in original panel construction. The form of glazing of loggias and balconies is not regulated and is chosen by the apartment owners. For these reasons, the integration of interspaces in renovated buildings should be supported by research that will bring new insights about their effect on assessments of the energy performance of residential buildings and their effect on the architectural expression of facades. The paper compares alternatives for the integration of interspaces with an emphasis on the efferc of their orientation. The research should serve to help regulate the glazing of loggias in residential panel buildings.
SIMPLIFIED MODEL OF LINEAR INERTIAL MEASUREMENT SYSTEMS
Authors: Poliarus Oleksandr , Medvedovska Yana , Poliakov Yevhen , Chepusenko Yevhenii , Zharko Yurii 
Published: October 2021

Problem. To increase the metrological reliability of measuring systems at technical objects, the number of sensors measuring the same process parameter is increased to several units and a model of a multi-channel measuring system is synthesized. This synthesis is usually based on the use of Markov's theory of linear filtering, but the presence of a connection between the input and output signals of the linear inertial system through the convolution integral significantly complicates the process of obtaining the optimal device. Goal. The aim of the article is to develop a method for approximating the integral equation of convolution, which describes a linear inertial system, and to estimate the limits of its application on the example of linear inertial sensors. Methodology. Instead of the output signal in the form of a convolution equation, the output signal, defined as the product of the input signal to an unknown time function is used. This function is represented by the Karhunen-Loev series. The distance in the functional space with a quadratic metric between these output signals is minimized by means of a genetic algorithm and the coefficients of the series and, therefore, the unknown function itself, are determined. Results. In the simulation, the relative difference between the output signals, which were calculated from exact and simplified expressions, was determined. Realizations of stationary signals were used as input signals, and the pulse characteristics of the linear inertial system varied over a wide range. The errors of approximation of the integral convolution equation by a simple model do not exceed a few percent. Origina-lity. The approximation of the convolution equation by a simplified model of the system is original and, although it cannot be applied in a wide range of conditions, it is acceptable for a separate class of stationary signals without restrictions. The accuracy of the approximation of the convolution equation is greatest if the width of the spectrum of the input signals is less than the bandwidth of the measuring system. Practical value. The obtained connection between input and output signals based on a simplified model allows to synthesize multi-channel measuring systems using advanced Markov filtering methods for a separate class of stationary input signals. To expand the application of the method in a wide range of conditions, a set of simplified models that are created in advance can be used.
Flow fields of a non-Newtonian fluid in vortex chamber pumps
Authors: Rogovyi Andrii , Neskorozhenyi Artem 
Published: October 2021

Problem. Pumping different fluids by hydraulic transport is associated with fast wear of the pump contact surfaces. The fluids being pumped are often non-Newtonian. The use of jet pumps for pumping is impractical due to low efficiency. Vortex chamber pumps may have higher efficiency when pumping non-Newtonian fluids, however, their operation on such fluids has not yet been studied. The aim of this work is to study the characteristics of the flow fields of a non-Newtonian fluid using the example of a Bingham fluid in the vortex chamber pump. Methodology. Predicting pump energy performance and determining flow fields for highly viscous fluids using CFD simulations enables advanced jet pumps to handle non-Newtonian fluids. Results. Modeling was carried out based on the numerical solution of the RANS equations with the SST turbulence model. To ensure the operability of the vortex chamber pump when pumping non-Newtonian fluid, with known rheological parameters of the mixture, it is necessary to select the required supply pressure for the active flow, and also to consider the issue of diluting the liquid with water to reduce the mixture viscosity and achieve the specified values of the pumping energy parameters. Originality. The hypothesis that the vortex chamber supercharger can operate on a hypothetical ideal fluid has been confirmed. In this case, the performance indicators of such a supercharger improve and tend to ideal. With an increase in plastic viscosity, the volumetric flow rate of the pumped fluid decreases, and at high values of the viscosity, an active flow is ejected through the axial channels. Practical value. Researchers can use the theoretical results of this work to design new devices for pumping other Bingham fluids, such as oil paint, resins, varnishes, swamp soils, and many others.
Assessment of the influence of the working fluid production on the output parameters of the transmission hydraulic motor of the front loader
Authors: Kosolapov Viktor 
Published: October 2021

Problem. During the operation of the volumetric hydraulic drive of the front loader, as the surfaces of the movable interfaces of the hydraulic drive elements wear out, the gaps increase, and as a result, the leaks of the working fluid (WF) increase, and, therefore, the performance of the machine as a whole decreases. The resource of the hydraulic drive units is largely determined by the physicochemical properties of the WF, and in particular, the ability of the WF to reduce the specific load in the contact of the surfaces of the movable joints. During the operation of the transmission hydraulic drive, the aging of the fluid occurs. As a result, its operational properties deteriorate, including a decrease in the bearing capacity of the WF lubricant film. This leads to an increase in the wear of the interface surfaces of the volumetric hydraulic drive of the transmission (VHDT) and a decrease in the productivity of the machine. Goal. Experimental studies of the influence of the working fluid production on the rate of change of the volumetric efficiency of the hydraulic motor of the volumetric hydraulic drive of the front loader transmission have been carried out. Methodology. The tests of the MP-90 hydraulic motor were carried out at the stand. The object of the study was the hydraulic motor of the MP-90 frontal loader. Hydraulic oil MANITOU HUILE HYDRAULIQUE ISO HV46 with different operating time was used as the WF. Samples were taken from the transmission drive system of the PMTS-1200 front loader. The experimental ones were carried out under the following conditions: WF temperature, t = 323 K; rotational speed of the pump drive shaft, n = 25 s ; the operating time of the WF varied within the range of T = 0–720 motor-hours with a step of 200 motor-hours; the purity of RZ is not less than 10 class according to GOST 17216-2001; the test time was taken equal to 40 hours; pressure in the discharge line 26.5 MPa, vibration amplitude 6 MPa, vibration frequency 0.2 s. Results. It is shown that an increase in the operating time of the WF during the operation of the machine determines, other things being equal, an increase in the rate of change in the volumetric efficiency of the VHDT hydraulic motor. Originality. To prevent increased wear of the moving surfaces of the VHDT interfaces during the operation of the front-end loader, it is necessary to use WF the bearing capacity of the lubricating film which is higher than the maximum permissible value. Practical value. The use of the results of the study will increase the VHDT of the hydraulic drive elements of the front loader and reduce the rate of decrease in its productivity during its operation.
ANALYZING REQUIREMENTS AND DEVELOPING PROTOTYPE OF TRAINING SOFTWARE FOR MOBILE PLATFORMS
Authors: Mnushka Oksana , Kotenko Bohdan , Savchenko Volodymyr 
Published: October 2021

Problem. Information and communication technologies (ICTs) have become an integral part of modern society in the 21st century. The impact of these technologies on the development of humanity is ambiguous and assessed by experts from very positive to very negative often based on the same facts. The use of ICT in education is the subject of basic and practical research. Goal. The aim of the work is to analyze the requirements and develop a prototype curriculum for young children, which includes analysis of the task and the audiovisual component, development of the prototype at the level of the framework program, whose content may vary depending on the task. Methodology. The analytical methods of research were used for the development and application of training software. Results. The means for the implementation of a development application for young children were analyzed, taking into account the age characteristics of the perception of audiovisual content. The cognitive abilities of children of different age categories were analyzed. Based on the analysis of requirements, the architecture of the training application was developed and its prototype was implemented for working on mobile platforms. The set of IDEF0-diagrams for training applications for children from 2 up to 8–10 years of age was obtained. The prototype of training application was tested by a common task. Originality. All results were obtained based on the research of children’s learning problems. Practical value. The prototype of mobile software can be used for making specified applications not only for children.
ENGINE AUTOSTART SYSTEM
Authors: Binkovska Anzhela , Kudyrko Olha , Tashchykov Andrii 
Published: October 2021

To improve the comfort of using the car, it became necessary to develop an engine autostart system. This system will integrate it into the car's anti-theft system and improve the use of the car regardless of weather conditions. The introduction of such a system will make it possible to increase the range of messages about alarms and the state of the alarm, the small value of which in old models due to the growth of abductions, the lack of close parking places has absolutely ceased to satisfy the driver. The analysis of the existing engine autostart systems is carried out, in which the main problem is highlighted, namely, the impossibility of pro-lime engine autostart at a long distance. As a result of the analysis, the goal of the study was highlighted: the expansion of the functional and consumer capabilities of the auto-alarm system. The developed remote start system is designed for sound and optical notification of violation of the protected vehicle zones, prevention of theft and robbery, remote execution of service functions. The result of the research is: the development of a working model and software, as well as experimental research. The originality lies in the fact that the constructed circuit allows monitoring and control of the autostart functions of the car engine from almost any distance (limited by the GSM reception area).
Systematic Review and Meta-Analysis of Cisplatin Based Neoadjuvant Chemotherapy in Muscle Invasive Bladder Cancer
Authors: Benkhadra Raed , Nayfeh Tarek , Patibandla Sai Krishna , Peterson Chelsea , Prokop Larry , Alhalabi Omar , Murad M. Hassan , Mao Shifeng S. 
Published: October 2021

BACKGROUND: Cisplatin-based neoadjuvant chemotherapy is the standard of care for muscle invasive bladder cancer (MIBC). OBJECTIVE: To compare the efficacy and safety of the two most commonly used cisplatin-based regimens; gemcitabine, and cisplatin (GC) vs. accelerated (dose-dense: dd) or conventional methotrexate, vinblastine, adriamycin, and cisplatin (MVAC). METHODS: We searched MEDLINE, Embase, Scopus and other sources. Outcomes of interest included overall survival, downstaging to pT≤1, pathologic complete response (pCR), recurrence, and toxicity. Meta-analysis was conducted using the random-effects model. RESULTS: We identified 24 studies. Efficacy outcomes were comparable between MVAC and GC for MIBC. dd-MVAC was associated with favorable efficacy compared to GC in terms of downstaging (OR 1.45; 95%CI 1.15–1.82) and all-cause mortality at longest follow-up (OR 0.63; 95%CI 0.44–0.81). However, GC was associated with a better safety profile in terms of febrile neutropenia (OR 0.32; 95%CI 0.13–0.80), anemia (OR 0.32; 95%CI 0.18–0.54), nausea and vomiting (OR 0.27; 95%CI 0.12–0.65) compared to dd-MVAC. Compared to MVAC, patients receiving GC had an increased risk of developing grade 3–4 thrombocytopenia (OR 4.70; 95%CI 1.59–13.89) and a lower risk of nausea and vomiting (OR 0.05; 95%CI 0.01–0.31). Certainty in the estimates was very low for most outcomes. CONCLUSIONS: Efficacy and safety outcomes were comparable between MVAC and GC for MIBC. Including non-peer-reviewed studies showed higher efficacy with dd-MVAC. A phase III randomized trial comparing the two regimens is needed to guide clinical practice.
Hazard analysis of a yacht designed for people with disabilities
Authors: Branowski Bogdan , Zabłocki Marek , Gabryelski Jarosław , Walczak Andrzej , Kurczewski Przemysław 
Published: October 2021

Introduction: In connection with the design of a seaworthy yacht for persons with disabilities, authors conduct a risk analysis and consider the safety aspects arising from these risks. In the context of tourism and recreation for people with disabilities, this represents a new issue in the literature. Aim: The aim of the analysis was a multi-aspect evaluation of the hazards that occur when sailors with disabilities carry out typical activities on a yacht. The recommendations arising from the conducted research were used when designing the structure of a staysail schooner intended to be sailed by people with disabilities. Methods: Two methods of risk analysis were adopted. A preliminary hazard analysis (PHA) was carried out with the purpose of identifying and evaluating the possibility of people with various types of disabilities carrying out activities on a yacht. A process hazard analysis (PRHA) was based on a four-degree structure of functions with 31 component operations, relating to both sailing and living on a yacht. This methodology was used by the authors in sailing for the first time when the yacht’s equipment was designed for persons with disabilities. Results: The evaluation covered the adaptation of the yacht for sailing by people with disabilities and considered the various functions that would need to be carried out by these people. A PRHA matrix was created, consisting of 1,116 fields. Authors found that safe execution of many of the relevant functions by people with various types of disabilities was indicated. Conclusions: Based on the results of the PRHA, a set of new guidelines was created for permanent and temporary adaptations of a yacht in the context of the degrees and causes of disabilities.
EVALUATION OF CARDIOVASCULAR DYSREGULATION IN PATIENTS AFTER HEMORRHAGIC STROKE AS A COMPLICATION OF ESSENTIAL HYPERTENSION
Authors: Tkachyshyn Oleksandr 
Published: October 2021

The aim of the study was to compare blood pressure and electrocardiogram indices, assessed by their daily monitoring, and anamnestic data on mild traumatic brain injury between a group of patients with essential hypertension ≥6 months after a hemorrhagic stroke and a group of patients with essential hypertension without complications. Materials and methods. The total number of examined patients was 198 people, who were divided into 2 groups: the main (n = 94; age – 54,4±8,8 years, M±σyears) and the control (n = 104; age – 53,7±8,9 years) one. Patients in the main group suffered a hemorrhagic stroke as a complication of essential hypertension ≥6 months ago. The control group included patients with essential hypertension, stage II. In both groups of patients, the parameters of 24-hour ambulatory blood pressure monitoring and electrocardiogram were determined. Results. The indices of 24-hour ambulatory blood pressure monitoring in the main group and the control group were the following ones, respectively:the mean daytime systolic blood pressure was 109,6±1,6 and 121,1±1,1 mm Hg, the minimal one was 74,4±2,0 mm Hg and 82,3±12,5 mm Hg, and the maximal one was 168,2±1,9 and 161,9±1,7 mm Hg, p<0,05. The daytime sigma systolic blood pressure (17,9±0,6) and its average real variability of (11,31±2,52 mm Hg) were bigger in the main group (p<0,05). The daytime index of the hyperbaric load of systolic blood pressure was bigger in the main group: it was 403,6±25,9 against 231,7±12,1 mm Hg×h in the comparison group (p<0,05). The mean, minimum and maximum heart rate at night were significantly lower in the main group (p<0,05). The QTcmin index was significantly lower in the main group in contrast to the control one – 286,28±43,34 and 336,69±22,55, and the QTvariance was greater – 232,56±44,55 – in comparison to the control group(188,31±33,67) (p<0,05). From the anamnestic data of patients, a significantly higher prevalence of mild traumatic brain injurywas found in 37,4% (35 patients out of 94) in the main group relative to the control one – 13,5% (14 out of 104), p<0,05. Conclusions: The results of the study indicate the larger ranges of blood pressure variability in patients with essential hypertension complicated with hemorrhagic stroke, which can be caused by impaired autoregulation according to the QTc interval data. In combination with the disturbances of cerebral circulation, caused by the injury of the brain due to the hemorrhagic stroke alone or in combination with mild traumatic brain injury episode, such a situation may lead to the development of recurrent stroke.
Anxiety and Writing Ability of Filipino ESL Learners
Authors: Kabigting Ryan P. , Gumangan Allan S. , Vital Dhonna P. , Villanueva Ella Shiela V. , Mosuela Evelyn S. , Muldong Fernan B. , Pamintuan Katherine P. , Mallari Maramina R. , Sagum Mary Grace L. 
Published: October 2021

The study aimed at describing how L2 anxiety of writing affected the Filipino English as Second Language (ESL) learners’ ability in writing. It also showed the anxiety rates, foremost type; then, the learners’ writing ability. Thirty-three grade 10 ESL learners participated in. The utilization of Second Language Writing Anxiety Inventory (SLWAI) which was proposed by Cheng, and a written test as one of the requirements of their subject was done for data collection. 82% of learners marked high anxiety in writing, 18% was moderate anxiety, and none was recorded low anxiety. The leading type of anxiety in writing was cognitive; then the somatic; lastly, the avoidance behavior. In the writing ability, learners were satisfactorily rated and male and female writing ability did not significantly differ. A negatively low correlated, inverse relationship of SLWAI and performance was found between anxiety in writing and Filipino ESL learners’ ability in writing using a second or foreign language. This implies that the greater the learners were anxious in writing, the lesser the achievement that a learner may have.
ANALISIS DUKUNGAN KELUARGA TERHADAP TINGKAT KEKAMBUHAN ORANG DENGAN GANGGUAN JIWA (ODGJ) DI WILAYAH KERJA PUSKESMAS GENENG KABUPATEN NGAWI
Authors: Ekayamti Endri 
Published: October 2021

Gangguan jiwa memerlukan proses yang panjang didalam pemulihan dan penyembuhanya. Proses tersebut memerlukan dukungan yang penuh dari keluarga, karena keluarga adalah tempat yang paling tepat untuk orang dengan gangguan jiwa (ODGJ) belajar berinteraksi setelah mereka keluar dari rumah sakit. Dukungan keluarga yang baik akan membantu mempercepat proses pemulihan dan dapat menjegah terjadinya kekambuhan. Apabila orang dengan gangguan jiwa mengalami kekambuhan hal ini akan memperparah penyakit dan kemungkinan untuk sembuh menjadi lebih sulit. Tujuan penelitian ini untuk menganalisis hubungan antara dukungan keluarga yang meliputi dukungan penilaian, dukungan emosional, dukungan informasional dan dukungan instrumental dengan tingkat kekambuhan pada ODGJ. Populasi dalam penelitian ini adalah keluarga dengan angota keluarga yang mengalami gangguan jiwa yang berada diwilayah kerja Puskesmas Geneng Kabupaten Ngawi dengan jumlah sampel sebesar 80 responden dan tehnik pengambilan sampel dengan purposive sampling. Pengumpulan data menggunakan kuesioner pada setiap variable dan kemudian dilakukan uji statistic dengan chi square. Hasil penelitian didapatkan terdapat hubungan yang bermakna pada dukungan penilaian terhadap tingkat kekambuhan dengan nilai p=0,001 (p<0,05), dukungan emosional dengan nilai p=0,001 (p<0,05), tidak terdapat hubungan antara dukuangan instrumental terhadap tingkata kekambuhan ODGJ dengan niali p=0,131 (p>0,05), dan terdapat hubungan yang signifikan antara dukuangan informasional terhadap tingkat kekambuhan ODGJ dengan nilai p=0,003 (p<0,05). Kesimpulan hasil penelitian bahwa dukungan keluarga sangat berpengaruh terhadap tingkat kekambuhan pada ODGJ, dimana semakin baik dukungan yang diberukan keluarga tingkat kekambuhan berulang pada ODGJ dapat dihindari