bluuebunny/crossref_metadata_2025 huggingface dataset:
MODERASI BERAGAMA DALAM BINGKAI TOLERANSI
Authors: ABROR MHD.
Published: August 2021

Pembahasan ini hendak menelaah lebih dalam tentang moderasi beragama di tinjau dari aspek toleransi. Hal ini dimaksudkan agar mendapatkan gambaran yang jelas, bagaimana sebenarnya moderasi beragama dan toleransi serta batas-batasnya.  Penelitian ini merupakan jenis penelitian kepustakaan (library research), yaitu suatu penelitian yang data-datanya berasal dari literatur-literatur yang terkait dengan obyek penelitian, kemudian dianalisis muatan isinya. Dari kajian ini menegaskan bahwa, moderasi dalam kerukunan beragama haruslah dilakukan, karena dengan demikian akan terciptalah kerukunan umat antar agama atau keyakinan. Untuk mengelola situasi keagamaan di Indonesia yang sangat beragam, kita membutuhkan visi dan solusi yang dapat menciptakan kerukunan dan kedamaian dalam menjalankan kehidupan keagamaan, yakni dengan mengedepankan moderasi beragama, menghormati keragaman, serta tidak terjebak pada Intoleransi, ekstremisme dan Radikalisme. Toleransi beragama bukanlah untuk saling melebur dalam keyakinan. Tidak juga untuk saling bertukar keyakinan dengan kelompok agama yang berbeda-beda. Toleransi di sini adalah dalam pengertian mu’amalah (interaksi sosial), sehingga adanya batas-batas bersama yang boleh dan tak boleh dilanggar. Inilah esensi moderasi dalam bingkai toleransi di mana masing-masing pihak diharapkan bisa mengendalikan diri dan menyediakan ruang untuk saling menghormati keunikannya masing-masing tanpa merasa terancam keyakinan maupun hak-haknya.
COMPARATIVE STUDY OF SEVOFLURANE AND PROPOFOL FOR EASE OF I-GEL INSERTION IN ADULT PATIENTS UNDERGOING GENERALANESTHESIA FOR SHORT PROCEDURES.
Authors: Krishnan Devika , A.D Mary , Balakrishnan Reshma
Published: August 2021

Background: I-gel is a second generation supraglottic airway device designed to provide and maintain a seal around the laryngeal inlet for
spontaneous ventilation and allow controlled ventilation at modest levels of positive pressure thereby endotracheal intubation can be avoided.
Propofol has been the drug of choice due to its better safety prole, relaxation and suppression of airway reexes among intravenous induction
agents. Sevourane with its pleasant odor, non-irritating to the airways and due to its bronchodilator property are best among the volatile agents. We
aim to compare induction characteristics and ease of I gel insertion with sevourane and intravenous propofol.
Methods:The study was conducted in 60 eligible adult patients undergoing general anesthesia for short surgical procedures in Pushpagiri Medical
College and Research Centre.Group Preceived Propofol and Group S received Sevourane 8%. Consecutive subjects who satisfy inclusion criteria
were randomly assigned into one of the two groups of 30 until sample sizes were achieved. I gel insertion attempted after adequate jaw relaxation.
Ease of I-gel insertion assessed by a three-point scoring system. Data was analysed by SPSS software .The independent variables assessed in this
study includes the drugs given and the comparison was done using unpaired t test.
Results: Sevourane group took more time for induction than Propofol group .It was found that insertion time for sevourane was higher than the
propofol group. The ease of I Gel insertion based on three point scale showed that in Sevourane group overall insertion conditions was excellent
in 36.7% ;satisfactory in 63.3% as compared to group Propofol group which was 83.3%; 16.7% respectively. The results were statistically
signicant (p<0.01).
Conclusion:It can be concluded that sevourane can be considered as a safer alternative to propofol for I Gel insertion
“ASSOCIATION OF ABO & RH BLOOD GROUPS WITH HEPATITIS, HIV AND SYPHILIS INFECTIONS IN HEALTHY BLOOD DONORS AT TERTIARY CARE CENTRE”.
Authors: Chitroda Sonal , Patel Neha , Solanki Pinal
Published: August 2021

Background: People from certain blood groups are more prone to develop infections transmitted by blood transfusion. In order to improve the
management of such infections some hypothesis suggests that genetic predispositions like ABO and Rh blood groups would inuence the
occurrence of such infections. Hence the present study aims to assess any possible associations of ABO & Rh blood groups with Hepatitis, HIV &
syphilis infections in healthy blood donors. This was a retrospective study in heal Methods: thy blood donors of tertiary care hospital enrolled
during years 2016 to 2020. Blood samples from total 34015 donors were screened for blood grouping & serology of HIV, Hepatitis & Syphilis.
Result: Out of total donors only 171 donors were found positive for transfusion transmitted infections. Hepatitis B virus was found more prevalent
compared to other infections. In ABO blood group type “B” and in Rh blood group type “Positive” was found more prevalent in donors. But it did
not show any signicant association with transfusion transmitted infections. Conclusion: High prevalence of HBV infections in blood donors in
present study point towards need of public health measures in general population. Undertaking further research to determine the special blood
groups as increased risk for categorized donors is recommended.
FORMULATION AND EVALUATION OF VALSARTAN CONTAINING SURFACE SOLID DISPERSIONS FOR THE DEVELOPMENT OF ORODISPERSIBLE TABLET
Authors: Rai Purnima , Kishor Braj Nandan , Pradhan Pooja
Published: August 2021

In this postulations we think about Surface Solid Dispersion and Oro dispersible tablet for upgrade of disintegration rate of valsartan. The
medications having low solvency, the disintegration of these medications is rate constraining advance in their bioavailability in oral measurements
frames. To defeat this number of innovations are accessible. Among them surface solid dispersion and oro dispersible tablets are two promising
systems. Surface solid dispersion is a method for scattering at least one xing on a water solvent transporter of to a great degree high surface
territory to accomplish expanded bioavailability and disintegration rates of insoluble medications, and oro dispersible tablets are one of the novel
oral medication conveyance framework that break down or scatter rapidly in almost no time after situation in month without water.
ETIOLOGY OF LYMPHADENOPTHY AMONG SOUTH INDIAN POPULTION.
Authors: Gurusamy Varagunapandian , M Sabrena , Asma A. Affee , Sudhishnaa S. , S.R. Deepika
Published: August 2021

Aim: To study the etiological causes of signicant lymphadenopathy among the adults in the South Indian population .
Materials & Methods: Patients with signicant lymphadenopathy and age more than 18 years and who t with inclusion criteria are taken into
study . Biopsy taken for all the patient t for anaesthesia and sent for Gene Xpert , Histopathological examination, AFB culture .
Result: Among the 50 patients with signicant lymphadenopathy, 31 were due to Tuberculous lymphadenitis, 6 were due to malignancy, 13 were
due to reactive lymphadenitis.
Conclusion: the commonest cause of lymphadenopathy is tuberculosis, and the AFB culture and sensitivity when compared to Gene Xpert had
2.1 times more chances of detecting TB adenitis and HPE for TB adenitis when compared to Gene Xpert had 3.8 times more chances of detecting
TB adenitis
EFFECT OF INTRAVITREALANTI VEGF COMBINED WITH MACULAR LASER IN A CASE OF PROLIFERATIVE DIABETIC RETINOPATHY WITH CLINICALLY SIGNIFICANT MACULAR EDEMA
Authors: Mathur Prachi , Porwal Rakesh
Published: August 2021

Diabetic retinopathy specically Diabetic macularedema is the leading cause of new cases of blindness in working adults.
We here discuss a case of a 50 year old male diabetic with clinically signicant macular edema who received a dose of intravitreal antiVEGF
followed by panretinal photocoagulation 3 weeks later and macular laser at the end of 3rd month.
On various followups there was a serial decrease in macular thickness.
This case emphasizes on the fact that combined effect of AntiVEGF therapy with laser therapy has a benecial role in Proliferative Diabetic
retinopathy with Diabetic Macular Edema.
SARS-COV-2: RT-PCR CYCLE THRESHOLD (CT) VALUE AT DIAGNOSIS AND ITS RELATION TO AGE AND SEX IN ASSAM, INDIA
Authors: Chowdhury Runumi , Barman Malavika , Medhi Devyashree , Deka Sumi , Duarah Bandeepa , Tahjiba Zahir Elteza
Published: August 2021

COVID-19 (corona virus disease 2019) is a global public health emergency caused by a new corona virus with severe acute respiratory syndromelike characteristics (SARS-CoV-2). We aimed to evaluate whether gender and age are major risk factors for SARS-CoV-2 infection. For the study,
300 positive cases diagnosed during the period of July 2020 to September 2020 were included. Results showed that 69% of study samples were
male of which 84% were in the >51 years old age group. And 31% of study samples were female of which 63% were in the 4-19 years old age group.
ANOVAresults indicated that the means of Ct values varied signicantly between age groups (F=2.703; p-value= 0.045). The lower Ct values were
recorded in males (29.01±4.35) in comparison to females (29.84±3.98) while, the difference between the means of the two groups was not
signicant. Our study concluded that males have higher viral load than females and for both sexes, age was found to be a signicant risk factor for
severity of COVID-19.
OUTCOME OF SECOND BABY OF TWIN IN A RURAL TEACHING HOSPITAL OF WEST BENGAL, INDIA
Authors: Patra Kajal Kumar , Mandal Anirban , Himabindu Thyadi
Published: August 2021

Background: Multiple pregnancies are a high-risk situation because of its inherent risks to mother and the fetus. Twin or multiple pregnancies are
gaining importance worldwide because of the attributable rise in treatment of infertility including assisted reproductive technologies. Twin
pregnancies are associated with increased fetal loss, prematurity, structural abnormalities, and fetal growth restriction. Complications associated
with twin pregnancy. The conduct of a twin delivery remains one of the most challenging events in the current obstetric practice. This Methods:
study was an Hospital-based cross-sectional descriptive study conducted in the Department of Obstetrics & Gynaecology of Bankura Sammilani
Medical College and Hospital, Bankura, West Bengal from January 2020 to December 2020. 238 patients were included in the study after informed
consent from the patient about being a part of this study. Template was generated in MS excel sheet and analysis was done on SPSS software.
Results: Majority 154 (64.7%) of women belonged to age group 21-30 years. Gestational age of 159 (66.8%) mothers were < 37 weeks. Perinatal
outcome of second twin was highest in the maternal age group 20 years. Perinatal outcome of second twin was highest in the birth weight of the 2nd
twin < 2500 grams. Delivery time interval between the babies was maximum 175 (73.5%) is < 10 minutes. Gestational age, Conclusions:
presentation, mode of delivery, and birth weight are the signicant determinants of perinatal outcome of the second twin. The second twin is at
higher risk of perinatal morbidity and mortality than the rst twin. Frequent antenatal care should be advised to the mothers.
A Robust Region Control Approach for Simultaneous Trajectory Tracking and Physical Human-Robot Interaction
Authors: Li Xiangyun , LU QI , Chen Jiali , Li Kang
Published: August 2021

In this work, the uncertainty and disturbance estimator (UDE)-based robust region tracking controller for a robot manipulator is developed to achieve the moving target region trajectory tracking and the compliant human-robot interaction simultaneously. Utilizing the back-stepping control approach, the UDE is seamlessly fused into the region tracking control framework to estimate and compensate the model uncertainty and external disturbance, such as unknown payload, unmodeled joint coupling effect and friction. The regional feedback error is derived from the potential function to drive the robot manipulator end-effector converging into the target region, where the robot manipulator can be passively manipulated based on the needs of human to achieve the compliant physical human-robot interaction. Extensive experimental studies are carried out with a universal robots 10 manipulator to validate the effectiveness of the proposed method for moving region trajectory tracking, handling unknown payload and compliant physical human-robot interaction. The superior robustness of the proposed approach is demonstrated by comparison with the existing controller under the adverse effect of unknown payload. The humanrobot interaction is achieved in a shared autonomy manner with the cooperation of the manipulator and the human subject to accomplish the temperature measurement task, where the variation in human-subject height and the complexity of aiming the thermometer are successfully accommodated.
Tecnologías emergentes en la educación superior. Nuevos planteamientos a una enseñanza y aprendizaje dinámicos
Authors: Márquez Díaz Jairo Eduardo , Bravo Bohórquez Angélica , Prieto Moreno Arles , Hernández Yomayusa Harvey Iovani , Hernández Hernández Luis Alejandro , Castañeda Rodríguez Luz Jaddy
Published: August 2021

Con la introducción de las tecnologías emergentes en el entorno educativo, el proceso enseñanza-aprendizaje ha venido transformándose en pro de facilitar el acceso al conocimiento al estudiante dentro y fuera del aula de clase, propendiendo de esta manera hacia una educación flexible, dinámica y personalizada. Es así, que en el presente artículo se expone la experiencia del uso de la clase invertida combinada con el aprendizaje móvil y el aprendizaje híbrido, que convergen a lo que se ha llegado a denominar como aprendizaje móvil híbrido invertido, que actúa como una herramienta pedagógica y metodológica ideal para la enseñanza de las matemáticas, en particular Cálculo I, que se caracteriza por la alta tasa de pérdida y deserción estudiantil. En este sentido, se detallan los hallazgos con base en los resultados de una investigación cuantitativa con diseño experimental y alcance descriptivo, realizada en el contexto de la educación superior en la Universidad de Cundinamarca en el primer semestre de Ingeniería de Sistemas, extensión Chía, cuyo objetivo central se ubicó en conocer cómo el material multimedia alternado con las aplicaciones móviles, motivado por el aprendizaje colaborativo y el entorno virtual de aprendizaje, tienen un impacto positivo en el rendimiento académico y una actitud diferente por parte del alumno frente a las matemáticas.
GNSS-technologies in testing automotive ADAS-system
Authors:   Vashurin A.S. Moshkov P.S. Toropov E.I. Trusov YU.P. Stepanov S.V.
Published: August 2021

In this article modern technologies are reviewed, they are used in testing ADAS systems, the principle of which is based on the use of global navigation systems (GNSS) and the using of differential corrections. The specialists of the Nizhny Novgorod State Technical University n. a. R. E. Alekseev have developed a schematic diagram in which Racelogic measuring equipment is used. The performance of the testing system was verified during tests of a bus based on a light commercial vehicle GAZelle Next while simulating the operation of the adaptive cruise control function. In the conclusion, graphs of a number of measured parameters are presented, the nature of the change in time confirms the correct functioning of the measuring equipment.

Keywords:
GNSS, Glonass, GPS, ADAS, testing, radiocommunication, RTK
Application of laser profilo metry in problems of welding equipment geometric adaptation
Authors:   Gavrilov A.I. Do M.CH. Tun N.L.
Published: August 2021

Adaptive adjustment of the relationship between the welding process parameters and the butt geometry permits to reduce the likelihood of welding defects appearance and improve the quality of the welded joint in automatic welding of large-diameter pipes. To obtain data on the configuration of the welded joint, the RF627 laser vision sensor is used. To reduce the influence of restrictions arising during the welding process, a median algorithm for filtering impulse noise is proposed. To calculate the geometric parameters of the welded joint, a model based on pixel data obtained from a laser sensor is proposed. The restoration of the welded butt parameters is carried out according to the algorithm of piecewise-linear approximation, which involves the determination of six characteristic points of the butt.
The adaptive adjuster uses an inverse neural network model for adjustment the parameters of the welding process: welding current, voltage, wire feed speed. To train the neural network, the characteristic parameters of the welded butt are used: gap, skewing (warping of the edges) and bluntness (for the root weld), the current width of the butt groove in each layer (for other types of welds). The weights of the neural network layers are restored online using a gradient descent algorithm. The important role of the laser vision sensor in solving the problem of adaptation of welding equipment and the effectiveness of the proposed algorithms are confirmed experimentally.

Keywords
laser vision sensor; robotic welding; multilayer/multi-pass welding; piecewise linear approximation; adaptive control with a reverse neural network model
Parametric identification of the error model for the aircraft inertial navigation system
Authors:   Hu TS. Selezneva M.S. Proletarskiy A.V. Neusypin K.А.
Published: August 2021

The problem of increasing the accuracy at estimating the inertial navigation systems errors by using identifying the parameters of the model is investigated. A scheme for correcting navigation systems with an estimation algorithm is presented. The accuracy of the errors estimation for the inertial navigation system by using the nonstationary adaptive Kalman filter when the average frequency of the gyroscope random drift changes is determined. A simple method for parametric identification of the change average frequency of a random drift by using a tuning coefficient is proposed. The results analysis of the estimation algorithm modeling by using the data of laboratory experiments with the serial navigation system Ts-060K is carried out. In the models of the estimation algorithm different average frequency values of the random drift change are used.

Keywords
aircraft; inertial navigation system; estimation algorithm; parametric identification; average frequency of random gyroscope drift; tuning factor; estimation accuracy
Analysis of the possibility for optical path full automation when working with a ring laser gyroscope
Authors:   Veselovsky A.A. Veselovskaya O.A. Terehov D.F.
Published: August 2021

The key features of the focusing modes of optical mirrors are considered; two focusing modes are developed and two algorithms for the implementation of these modes at the operator’s workplace are described.

Keywords
gyroscopic devices; ring laser gyroscope; operator’s workplace; control of the mirror optical purity; scattering of particles; optical path
Effect of weld structure on fracture mode of heat-temperature HP40NbTi alloy
Authors: Kondrat'ev S.Yu. , Fuks M.D. , Frolov M.A.
Published: August 2021

The microstructure and phase composition of pipe welded joint made of HP40NbTi alloy are studied. The short-term and long-term mechanical properties of the pipe base metal and the welded joint are determined. It is shown that the structural heterogeneity of the weld and the formation of G-phase in the heat-affected zone significantly reduce the long-term strength of the alloy. The fracture mode and the role of G-phase in the cracks formation during the operation of the welded joint are studied.
Cutting off shears of workpieces by elastic reaction of bed
Authors: Kruk A.T. , Boyko A.Yu. , Milushev E.Kh. , Novokshchenov S.L.
Published: August 2021

The technological capabilities of the shear cutting off method of the workpieces from the bar by the elastic reaction of the bed are analyzed. The shears design to increase their rigidity and efficiency is proposed.
Road barriers: modern solutions for improving traffic safety
Authors:   Andreev K.P. Boryichev S.N. Terentyev V.V. Shemyakin A.V.
Published: August 2021

Improving the system of preventive measures aimed at reducing the severity of the consequences of road accidents is an urgent task. Road deaths are constantly increasing and there is a need for a comprehensive approach to creating safe road conditions. The purpose of this study is to analyze the promising designs of road barriers designed to prevent uncontrolled exit of vehicles from the roadway of the highway and to develop the design of energy-absorbing fencing. Barrier barriers must not only be safe for road users, but must also ensure their safety, as well as preserve the elements after hitting the fence. Analytical studies have shown that in order to reduce mechanical damage to vehicles and reduce the severity of injuries to the driver and passengers, it is necessary to develop a road fence design that allows you to extinguish the impact energy at the moment of contact between the car and the fence.

Keywords:
fencing, barrier, safety, traffic accident
In-depth analysis of the results of an experimental study of the braking properties of a KAMAZ-740 engine with an engine brake under electronic control
Authors:   Ryabov I.M. Al-Sumaydai F.R. Zotov V.M. Sokolov A.YU. Al-Djumaili A.H.
Published: August 2021

As a result of an in-depth analysis, the dependences of the braking torque of a KAMAZ-740 diesel engine on the engine braking time were obtained in an analytical form, from which it was established that the initial braking torque when braking by an engine with an engine brake is 2 times higher than the initial braking torque when braking by an engine without an engine brake. But the braking torque when braking with an engine with an engine brake quickly decreases several times over time. This reduces the effectiveness of its use for service braking, therefore, to improve the engine brake, it is necessary to stabilize its braking torque due to the electronic control system.

Keywords:
analysis, engine braking properties, experimental research, electronic control
Preparation of the surface of workpieces for a heat-shielding coating
Authors: Nenakhov N.N. , Smolentsev V.P. , Mozgalin V.L. , Portnykh A.I.
Published: August 2021

The issues of preparation the surfaces of metal products for the application of high-temperature protective coatings from mineral-ceramic granules with a conductive binder are considered. The influence of contamination in the contact zone of the preparation with the coating on the quality of the product is described and methids for eliminating the factors affecting the decrease in the resistance of the applied layer under the influence of the torch of hot products of fuel combustion are show.
OBSERVATIONAL ANALYSIS ON RESULT OF YSZ COATED PISTON CROWN ON THE BEHAVIOUR OF A PETROL ENGINE
Authors: Muhammad Asad Riaz
Published: August 2021

An observational study of thermal barrier coating (TBC) on the working of 4-stroke single cylinder petrol engine was studied. Yttria Stabilized Zirconia (YSZ) used as coating material. YSZ has less thermal conductivity, sustainability under high temperature and pressure. Main aim of TBC is to decrease heat losses to the cooling jacket of the engine. YSZ is coated on the piston crown by Plasma spray method. YSZ coating improves the performance of petrol engine. Experimental study was carried out on 4-stroke single cylinder OHV petrol engine 25‎°C inclined cylinder horizontal shaft engine on performance of ceramic coated engine and compared with baseline engine under different speed. Results show that ceramic coated engine is more effective than conventional engine as brake specific fuel consumption (BSFC) is reduced 2-4% than normal piston engine, brake thermal efficiency (BTE) of modified engine is expanded 4-8% than unmodified engine. Indicated thermal efficiency (ITE) of modified piston engine is increased 5-10% than normal engine. Mechanical efficiency (ME) of the TBC engine is increased 4-10% than standard engine. Volumetric efficiency (VE) of modified engine is decreased 3-9% when compared with standard engine and exhaust gas temperature (EGT) of ceramic coated engine is increased 1-3% than unmodified engine.
KEYWORDS: Petrol Engine, Thermal barrier coating (TBC), Yttria Stabilized Zirconia (YSZ). Mechanical Efficiency
Trichilemmal cyst of the neck: case report and review of the literature
Authors: Othman El Houari  , Amal Hajjij  , Ilias Tahiri  , Mohamed Said Anajar  , Loubna Taali  , Mohammed Zalagh  , Fouad Benariba
Published: August 2021

Introduction: Trichilemmal cysts are lesions originating in the isthmus of the hair follicle. They are more common in women and occur in 90% on the scalp.

Presentation of case: A 10-year-old female patient presented with a hard, slightly painful, nonexophytic mass in the right cervical region (Ia). After surgical resection in healthy margins, the diagnosis of trichilemmal cyst was made on histopathological examination.

Discussion: The age of the patient as well as the cervical location of this type of lesion is an extremely rare presentation of trichilemmal cyst. Follow-up is rigorous in search of a triad: ichthyosis, keratosis, deafness, particularly in this patient.

Conclusion: Close follow-up in this clinical case is indicated because the risk of malignant degeneration and development of similar lesions is present.

Keywords: Follicular cyst; KID syndrome; Trichilemmal cyst; Neck surgery; Trichilemmal carcinoma
Collapse Simulation of CFRP Retrofitted Column using Hybrid Testing Technique
Authors:   Dept. of Civil Engineering, College of Engineering, University of Duhok, Duhok, 42001 Kurdistan Region, Iraq, Faiud Al-Ogaidi Yassamin K. , Wilson John ,   Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne 3122, Australia., Hashemi Javad Hashemi ,   Faculty of Science, Engineering and Technology, Dept. of Civil and Construction Engineering, Swinburne University of Technology, Melbourne 3122, Australia., Al-Mahaidi Riadh ,   Faculty of Science, Engineering and Technology, Dept. of Civil and Construction Engineering, Swinburne University of Technology, Melbourne 3122, Australia., Abdouka Kamiran ,   Faculty of Science, Engineering and Technology, Dept. of Civil and Construction Engineering, Swinburne University of Technology, Melbourne 3122, Australia.
Published: August 2021

The performance of Reinforced Concrete (RC) structures and their collapse safety experiencing moderate to high-magnitude seismic excitations might not be fully understood. Factors related to the high levels of uncertainties in ground motion content, structural modelling and design uncertainties, or to the empirical nature of design codes and standards affect the collapse assessment of RC structures. Therefore, experimental test researches are very important in verifying and improving the accuracy of structural performance predictions and highlighting the actual behavior during seismic excitation. In this paper, the test results of a full-length damaged RC column retrofitted with Carbon Fiber Reinforced Polymer (CFRP) sheets and then retested using pseudo-dynamic experimental testing approach through the state-of-the-art hybrid simulation testing facility, referred to Multi-Axis Substructure Testing (MAST) system at Swinburne University of Technology are presented. A comparative collapse assessment of the initial and retrofitted column showed more ductile column response reaching higher drift ratios. In addition, the experimental test results displayed clearly the effectiveness of CFRP sheets under increasing intensity of earthquake demands in restoring the collapse resistance of the retrofitted RC column by altering concrete failure type.
Flexural Behavior of Damaged Lightweight Reinforced Concrete Beams Strengthened by CFRP
Authors:   Department of Civil Engineering, College of Engineering, University of Kirkuk, IRAQ, Salahaldin Ali I. , Jomaa’h Muyasser M. ,   Department of Civil Engineering, College of Engineering, Tikrit University, IRAQ., Naser Dlovan M. ,   Department of Civil Engineering, College of Engineering, Tikrit University, IRAQ.
Published: August 2021

One of the most common methods of strengthening, rehabilitation, or repairing of structural lightweight concrete (LWC) elements is the external carbon fiber reinforced polymer (CFRP) strips. This paper presents an experimental study on the flexural behavior of reinforced concrete beams which comprise lightweight aggregate concrete, in different proportions, strengthened by CFRP sheets. The experimental program included six specimens with a 1500mm effective span. Two of the specimens were normal concrete beams. Another two samples were lightweight beams with a 50% aggregate replacement with pumice. The last two specimens were lightweight concrete beams with a 75% aggregate replacement with pumice. These beams were casted and tested twice under a two-point load application, once before strengthening and the other after that. The experimental results show that full strengthening of the beams along with their entire length, increase in load-carrying capacity by 75%, 113%, and 107% for normal concrete beam, (50% aggregate replacement) LWC beam, and (75% aggregate replacement) LWC beam respectively. While the middle-third strengthening of the beams shows an increase in load-carrying capacity by 64%, 72%, and 57% for normal concrete beam, (50% aggregate replacement) LWC aggregate beam, and (75% aggregate replacement) LWC beam respectively. The strength of the two types of LWC beams was almost the same and it is about 85% of the concrete beam with normal weight.
The Possibility of Using Waste PET Plastic Strip to Enhance the Flexural Capacity of Concrete Beams
Authors:   College of Engineering, University of Sulaimani, Iraq, Abdullah Wrya A. , Unis Ahmed Hemn ,   College of Engineering, University of Sulaimani, Iraq, ALSHKANE Younis M. ,   College of Engineering, University of Sulaimani, Iraq, Rahman Darko B. ,   Civil Engineer, Concrete Laboratory, College of Engineering, University of Sulaimani, Iraq, Ali Ashkan O. ,   Civil Engineer, Concrete Laboratory, College of Engineering, University of Sulaimani, Iraq, Abubakr Shko S. ,   Civil Engineer, Concrete Laboratory, College of Engineering, University of Sulaimani, Iraq
Published: August 2021

The most widely used material after water is the concrete composite. However, it is commonly accepted that concrete is weak in tension compared to its compression, therefore, conventionally, it is usually reinforced with steel rebars. Recently, reusing of waste plastic materials has become a norm among researchers whom used it in different forms in improving some mechanical properties of the concrete such as impact and tensile strength. However, using PET plastic strips as a replacement of main steel rebars is a novel idea. Therefore, in this study the experimental laboratory work is conducted to investigate the possibility of using waste plastic strips as a replacement of the main reinforcement steel bars to promote the flexural capacity of concrete beams at 28 days. For this purpose, a total number of 10 beams were casted with dimensions of (200mm x 200mm x 1200mm) to investigate the effects of using waste plastic strips in enhancing the bending capacity of the beams. The results showed that the incorporation of the plastic strips can improve the load carrying capacity and toughness of the concrete beams compared to unreinforced concrete beams.
Suivi atmosphérique des émissions de CO2 de la région parisienne
Authors: Ciais Philippe , Ramonet Michel , Lauvaux Thomas , Bréon François-Marie , Lian Jinghui , Laurent Olivier , Combaz Delphine , Broquet Grégoire , Legendre Virgile , Delmotte Marc , Xueref-Rémy Irène , Jamous Marc , Cailteau-Fischbach Cristelle , Françoise Yann
Published: August 2021

Les avancées scientifiques permettent un suivi des émissions des villes à partir de mesures des concentrations atmosphériques de CO2 sur un réseau de stations et de méthodes d'inversion fondées sur des modèles de météorologie et de transport atmosphérique à méso-échelle. Nous prenons pour exemple l'agglomération de Paris. Les mesures atmosphériques collectées par un réseau de stations urbaines et périurbaines sont présentées, ainsi que les résultats d'une inversion des émissions et les directions de recherche pour affiner ces estimations. Enfin, la signature du premier confinement lié à la Covid-19 pendant le printemps 2020 sur les mesures atmosphériques de CO2 est présentée et suggère une forte réduction des émissions.

Scientific advances enable the monitoring of urban CO2 emissions from in situ measurements of atmospheric CO2 concentrations and atmospheric inversion methods based on mesoscale meteorological models. We use the Paris urban area as an example. Atmospheric measurements collected at a network of urban and suburban stations are presented, as well as the results of an atmospheric inversion of the city emissions, and research directions to refine these estimates. The signature of the Covid-19 lockdown measures in the spring 2020 on the urban atmospheric CO2 signals is presented, indicative of a strong reduction of emissions.
Czechoslovakia and Soviet Foreign Policy
Authors: Naimark Norman
Published: August 2021

Although not addressed in his study of Soviet foreign policy in postwar Europe, Norman Naimark believes the Czechoslovak coup of February 1948 would make an ideal subject for a future monograph.
APPLICATION OF ENSEMBLE MACHINE LEARNING METHODS FOR PREDICTING THE TECHNICAL STATE OF AN OBJECT
Authors:   Ulyanovsk State Technical University, Kuvayskova Yu.E.
Published: August 2021

To ensure the reliable functioning of a technical object, it is necessary to predict its state for the upcoming time interval. Let the technical state of the object be characterized at a certain point in time by a set of parameters established by the technical documentation for the object. It is assumed that for certain values of these parameters, the object may be in a good or faulty state. It is required by the values of these parameters to estimate the state of the object in the upcoming time interval. Supervised machine learning methods can be applied to solve this problem. However, to obtain good results in predicting the state of an object, it is necessary to choose the correct training model. One of the disadvantages of machine learning models is high bias and too much scatter. In this paper, to reduce the scatter of the model, it is proposed to use ensemble machine learning methods, namely, the bagging procedure. The main idea of the ensemble of methods is that with the right combination of weak models, more accurate and robust models can be obtained. The purpose of bagging is to create an ensemble model that is more reliable than the individual models that make up it. One of the big advantages of bagging is its concurrency, since different ensemble models are trained independently of each other. The effectiveness of the proposed approach is shown by the example of predicting the technical state of an object by eight parameters of its functioning. To assess the effectiveness of the application of ensemble machine learning methods for predicting the technical state of an object, the quality criteria of binary classification are used: accuracy, completeness, and F-measure. It is shown that the use of ensemble machine learning methods can improve the accuracy of predicting the state of a technical object by 4% –9% in comparison with basic machine learning methods. This approach can be used by specialists to predict the technical condition of objects in many technical applications, in particular, in aviation.
DETERMINATION OF FACTORS AFFECTING THE FORMATION OF THE ECONOMIC SECURITY LEVEL OF MUNICIPAL FORMATIONS
Authors:   Ulyanovsk State Agrarian University named after P.A. Stolypin, Alexandrova N.R. , Nuretdinova Yu.V. ,   Ulyanovsk State Technical University
Published: August 2021

In order to determine the factors that determine the level of economic security of municipalities in the region, correlation and regression modeling was carried out, the results of clustering of municipalities are presented. The study showed that the development of its own production in the district and improvement of socio-demographic indicators have the greatest influence on the formation of the rating position of a municipality in terms of economic security, determined by the method of scoring.
ON THE PRODUCTION TECHNOLOGY OF PANELS MADE OF COMPOSITE MATERIALS USING SIAL
Authors:   Ulyanovsk State Technical University, Kudryashov V.A. , Arazveliev B.T. ,   Ulyanovsk State Technical University, Seltsov E.V. ,   Ulyanovsk State Technical University, Volskov D.G. ,   Ulyanovsk State Technical University
Published: August 2021

The article analyzes the most successful results of the use of metal-polymer composite materials (MPCM), reflects the advantages at the current stage of development. The analysis of the use of composite materials in the design of helicopter gliders is carried out. The use of microtubules in the manufacture of double curvature panels using MPCM is considered. Improvement of technologies in the production of structures made of MPCM. The search for optimal parameters of the technological process in the production of panels of double curvature of components based on SIAL used in the aircraft design is carried out. The optimal technological process in terms of time resources, material costs, and design weight at different levels of serial production were considered as optimization criteria in this study. Numerical modeling and optimization of workflow parameters were performed in the NASTRAN CAE system (NX). Each of the combinations of optimized process variables was determined based on numerical modeling. Analysis of the optimization results showed that the growth of parameters of the working process leads to an expansion of the area of locally optimal parameters. With optimal parameters of the working process, it is assumed that the cost of work will be reduced.
THE EXPERIMENTAL AND NUMERICAL STUDY OF THE FORCES DURING THE INCREMENTAL FORMING OF TITANIUM SHEETS
Authors:   Institute of Aviation Technology and Management, Ulyanovsk State Technical University, Markova E.V. , Al Darabseh A.M. ,   Institute of Aviation Technology and Management, Ulyanovsk State Technical University, Daba’bneh I.E. ,   Institute of Aviation Technology and Management, Ulyanovsk State Technical University, Ahmed A.R. ,   Institute of Aviation Technology and Management, Ulyanovsk State Technical University
Published: August 2021

Incremental forming is a rapid prototyping process that allows sheets to be formed without using forming tools, using a numerically controlled machine tool. A wide variety of shapes can be generated with this process. The objective of this work is to study through experimental tests and numerical simulations the behavior of ASTM grade 2 titanium during incremental point forming (SPIF). A Spinner MFG850 machining center from ISET in JENDOUBA coupled to a multi-component force sensor FN7325 was used for the forming of thin sheets by this process. As the diameter of the punch and its incremental movement are parameters having a direct effect on the forming force, tests with diameters of the punches dp varying between 10 and 15 mm and various paths made up of circular movements in the horizontal plane have been carried out experimentally. Numerical simulation is carried out in large elastoplastic deformations with ABAQUS/explicit. Comparisons of the evolution of the forming force for different values of the diameter of the punch dp and of the displacement step ∆zare carried out.
FORMING OF SHEET DETAILS WITH CURVILINEAR SIDES WITH ELASTOMER PRESSURE
Authors:   Ulyanovsk Affiliate of Tupolev Design Bureau, Mantusov М.N. , Moiseev V.K. ,   Samara National Research University named after Academician S.P. Korolyov, Sharov A.A. ,   Samara National Research University named after Academician S.P. Korolyov, Gromova E.G. ,   Samara National Research University named after Academician S.P. Korolyov, Ryzhakov S.G. ,   Ulyanovsk Affiliate of Tupolev Design Bureau
Published: August 2021

In the article, the authors present a method of constrained bending of sheet parts with curvilinear sides by the elastic media. They describe the process of constrained bending and the scheme of the experiment. After the first transition, a part with thinning in the radius and high side springing is obtained. The second transition, on a low-height rigging, a wave of excess material is first formed in the radius zone, which settles on the contour of the mandrel with a set of thickness. The stages of forming a semi-finished product are given. The experiment showed the feasibility of constrained bending of curved sides, wall thickness measurements showed that the second transition results in a thickening of the part wall. Finite element modeling of a constrained bend is performed to study the effect of excess of the Board on the thickening in the bending zone. Numerical studies of deformation processes have been carried out. An example of a diagram of the part thickness change for various deformation stages as a result of numerical studies is given. Dependence of part height exceeding with loss of stability during shaping is established. Examples of defects - folds are given.
AUTOMATION OF PERSONNEL QUALITY CONTROL AS AN ELEMENT OF THE PRODUCTION SYSTEM
Authors:   Ulyanovsk State Technical University, Sokolova O.F. , Kulikova M.I. ,   Ulyanovsk State Technical University, Kulikov I.N. ,   Ulyanovsk State Technical University
Published: August 2021

This article focuses on automation of personnel quality control into the production process organization for the cost reduction, the elimination of discrepancies, meeting social distancing requirements, human capital growth.
SELECTION OF THE PARAMETERS OF THE GENERALIZED DISPERSION ALGORITHM FOR MULTIVARIATE STATISTICAL CONTROL OF THE PROCESS SCATTERING
Authors:   Ulyanovsk State Technical University, Alekseeva A.V. , Klyachkin V.N. ,   Ulyanovsk State Technical University
Published: August 2021

To control the stability of the functioning of aviation equipment units based on the results of monitoring a group of indicators, methods of statistical processes control can be used. In the presence of significant correlations between performance indicators, multivariate methods are used. In this case, the control of the average level of the process is carried out on the basis of the Hotelling algorithm, the control of multivariate scattering is carried out using the generalized variance algorithm. If, according to the conditions of the process, it is necessary to ensure the fastest detection of a violation, then the optimization problem of finding such values of the sample size, sampling frequency and position of the control boundaries is solved that minimizes the average time of the unstable state of the process. The initial data are the number of process indicators monitored, the target value of the generalized variance (estimated from experimental data), the characteristic of the permissible increase in scattering, the intensity of process disturbances (parameter of the Poisson distribution); time to search for a violation after its detection and time to calculate the sample element.
ANALYSIS OF THE STATE OF AIRCRAFT CREW MEMBER BY THE SPEECH USING GAUSSIAN MODELS OF MIXTURES
Authors:   Financial University under the Government of the Russian Federation, Andriyanov N.A. , Dementiev V.E. ,   Ulyanovsk State Technical University
Published: August 2021

The work is devoted to the study of the effectiveness of the application of models of Gaussian mixtures for the recognition of abnormal deviations in the speaker's speech. The practical application of the developed algorithms for revealing the emotional state of the crew member by the phrase uttered by such crew member is proposed. The spectral characteristics of the speech signal are used as the main criterion for distinguishing using the Gaussian mixture model. In connection with a rather small sampling step in frequency and, accordingly, with the presence of 255 frequency components in the signal spectrum, it is proposed to compress the spectrum to 10 components. This approach made it possible to reduce the number of key parameters in the Gaussian model to 10, which, in turn, made it possible to simplify the analysis process when constructing multivariate distributions. To assess the quality of the proposed algorithm, test phrases were recorded. At the same time, various psychological states of the speaker were imitated. We used both simple unregulated speech structures and messages regulated in accordance with the Federal Aviation Rules when conducting radio exchange in civil aviation on the territory of the Russian Federation. Taking into account the limitations on the prior knowledge of the model and clustering by spectral characteristics, all recordings of the model were made by one speaker. Three classes of the speaker's emotional state were considered. At the output, the recognition system put such marks as a calm state, a tired state, a stressful state. Various states were artificially simulated during data preparation. On a test sample of 48 messages, a Gaussian model of 3 components and 10 parameters without preliminary training immediately allowed to achieve a result of about 65%, while the probability of recognizing the correct class with 3 equal classes a priori is 33%. As further research, it is proposed to apply preliminary training using neural networks or correlation algorithms. This approach will allow further clustering at a deeper level, when, for example, the gender of the speaker is determined, a typical message of the radio exchange is determined, and then the emotional state of the speaker is revealed.
A Compact Fractal-Shaped O-Ring Monopole Antenna for Modern Broadband Wireless Applications
Authors: Wu Chang-Ju , Chen I-Fong , Peng Chia-Mei , Tsai Wen-Yi , Sun Jwo-Shiun
Published: August 2021

In this letter, the design of a compact planar Fractal-shaped O-ring monopole antenna based on the Sierpinski carpet concept is studied and proposed for modern broadband wireless applications. The planar fractal-shaped O-ring monopole antenna is on the basis of Sierpinski category construction and then modifies the state of the plane inward with a radius of 27mm over the two iterations. The antenna structure is low profile and easy to be fabricated, and it has performed the simulation and measurement with the result VSWR ≤ 2 that can achieve a wide impedance bandwidth 636% from the frequency band 1.57GHz ~ 10GHz. The geometric scale factor of the Sierpinski fractal is according to the same scale element that defines the geometrical self-similarity. In our experiments, the results show that use of fractal-shaped O-ring into monopole antenna structure can effectively improve input impedance matching, and obtain a larger bandwidth and better radiation pattern, while also having predictable multi-band characteristics.