bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of plasma-chemical products on process stability in a low-emission gas turbine combustion chamber
Authors: Serbin Serhiy , Kozlovskyi Artem , Burunsuz Kateryna 
Published: April 2021

Abstract
The article describes the stability of gaseous fuel combustion in gas turbine low-emission combustion chambers with the plasma-chemical assistance. The mathematical model of unsteady processes in a low-emission combustion chamber with a plasma-chemical stabilizer that takes into consideration the impact of low-temperature plasma on aerodynamics flow in a combustion chamber and the characteristics of heat release is developed. A methodology of a numerical experiment concerning the stability of gaseous fuel combustion in a combustion chamber with plasma assistance using computational fluid dynamics, which enhances the efficiency of designing and adjustment, is proposed. Practical recommendations for improvement of stability of a gas turbine combustion chamber with partially premixed lean fuel–air mixtures, working on gaseous fuels, are developed. They allow to reduce pressure fluctuations inside the flame tube by 10–35%, to decrease spectral power of static pressure in the flame tube in 1.5–2.0 times, to reduce nitrogen oxide emission up to 33.6 ppm in the exit section while retaining a carbon monoxide emission level, that corresponds modern international ecological standards.
Influence of nozzle exit geometrical parameters on supersonic jet decay
Authors: Mohanta Prasanta Kumar , Sridhar B. T. N. , Mishra R. K. 
Published: April 2021

Abstract
Experiments and simulations were carried on C-D nozzles with four different exit geometry aspect ratios to investigate the impact of supersonic decay characteristics. Rectangular and elliptical exit geometries were considered for the study with various aspect ratios. Numerical simulations and Schlieren image study were studied and found the agreeable logical physics of decay and spread characteristics. The supersonic core decay was found to be of different length for different exit geometry aspect ratio, though the throat to exit area ratio was kept constant to maintain the same exit Mach number. The impact of nozzle exit aspect ratio geometry was responsible to enhance the mixing of primary flow with ambient air, without requiring a secondary method to increase the mixing characteristics. The higher aspect ratio resulted in better mixing when compared to lower aspect ratio exit geometry, which led to reduction in supersonic core length. The behavior of core length reduction gives the identical signature for both under-expanded and over-expanded cases. The results revealed that higher aspect ratio of the exit geometry produced smaller supersonic core length. The aspect ratio of cross section in divergent section of the nozzle was maintained constant from throat to exit to reduce flow losses.
Evaluation of exit pattern factors of an annular aero gas turbine combustor at altitude off-design conditions
Authors: Muduli Saroj Kumar , Mishra R. K. , Mishra Purna Chandra 
Published: April 2021

Abstract
This paper presents the experimental results of an annular combustor. A full scale full annular combustion chamber is tested at ground test stand simulating altitude off-design operating conditions. Traversing thermocouple rakes are used to measure temperatures over the entire annulus at combustor exit. The radial temperature profile is found to be a strong function of operating parameters while the circumferential pattern factor is within the design goal. Increase in reference Mach number at these off-design conditions has caused the redial temperature profiles to deviate and increase from the intended profile. These results will be used for benchmarking the computational model. The computational model will be used for detail study of the temperature non-uniformity over the entire flight envelope and also for modification of combustor liner for performance improvement.
High-Temperature Performance of Next-Generation Silicon Carbide Fibers for CMCs
Authors: Harrison Shay , Schneiter John , Pegna Joseph , Vaaler Erik , Goduguchinta Ramkiran , Williams Kirk 
Published: April 2021

Abstract
Single-fiber (monofilament, not twisted tow) high-temperature creep performance of refractory ceramic compositions is a fundamental material property that must be examined and understood for the successful deployment of ceramic matrix composite material systems in demanding applications. A novel creep testing approach was devised utilizing an innovative approach to fiber sample attachment and used to evaluate the creep behavior of Free Form Fibers’ LP-30SC and Nippon Carbon-based Hi-Nicalon Type S (HNS) silicon carbide fiber products. The testing apparatus, analytical basis for the creep calculations, including the sample gage length, and collected data are presented. Test conditions include a range of peak hold temperatures, from 1,300°C to 1,500°C, gas environments, and hold time patterns at the peak temperature. Clear differences in resistance to creep degradation were evident between the LP-30SC and HNS fibers, as the LP-30SC demonstrated strong resiliency to high temperature exposure while the HNS showed performance degradation consistent with oxidation attack.
The first serological evidence of Anaplasma phagocytophilum in horses in Slovakia
Authors: Drážovská Monika , Vojtek Boris , Mojžišová Jana , Koleničová Simona , Koľvek Filip , Prokeš Marián , Korytár Ľuboš , Csanady Alexander , Ondrejková Anna , Vataščinová Tatiana , Bhide Mangesh Ramesh 
Published: April 2021

AbstractAnaplasma phagocytophilumis the causative agent of granulocytic anaplasmosis. It affects humans and several wild and domesticated mammals, including horses. The aim of our study was a preliminary survey of the occurrence of these re-emerging pathogens in horses in Slovakia. The sera from 200 animals of different ages and both sexes were tested for the presence ofA. phagocytophilumantibodies by indirect immunofluorescence assay. Subsequently, detection of the16SrRNA gene fragment ofA. phagocytophilumwas attempted by polymerase chain reaction (PCR) in each blood sample. Our results confirmed the presence of specific antibodies in 85 out of 200 individuals (42.5%), but no significant changes were found between the animals of different ages and sexes. However, the PCR analysis did not detect any positive animals. Our data represent one of the highest values of seropositivity toA. phagocytophilumin horses in Central Europe. These results may contribute to a better understanding of the circulation ofA. phagocytophilumin this region, thus indicating a potential risk to other susceptible species.
A pedagógia és a pszichológia együttélési formái a Debreceni Egyetemen
Authors: Brezsnyánszky László 
Published: April 2021

Összefoglaló. Az egyetem alapítását követően 1918-ig nem volt önálló
pedagógiai katedra, lélektani tanszék pedig csak 1970-től működik. A
diszciplínák viszonyát a szakma, a politika és a vidéki egyetem lehetőségei
formálták. A változások szakaszra osztva értelmezhetők: a filozófiába és
pedagógiába foglaltságtól (Tankó, Mitrovics, Karácsony), a pszichológia
fokozatos leválásán át (Kelemen) a térnyerésig (Hunyady, Mészáros, Kovács).
Helyi sajátosság: a lélektan a pedagógiai pszichológia révén emancipálódott.
Erre épülhetett a pszichológia szak indítása, az intézet kiteljesedése. A
változásokat kívánjuk nyomon követni, bemutatni a pedagógia és a pszichológia
szervezeti egységeit, fő képviselőit és a viszony jellemzőit az ezredfordulóig.
A tanulmány helyi forrásokra és szakirodalmi munkákra támaszkodik.
Summary. After the foundation of the University, there had been no
independent professorship in Pedagogy until 1918 and the Department of
Psychology started functioning only from 1970. The relationship of these
disciplines was formed by the profession, politics, and the opportunities of the
rural university. Changes can be interpreted by dividing them into periods: from
their inclusion in philosophy and Pedagogy (Tankó, Mitrovics, Karácsony),
through the gradual detachment of psychology (Kelemen) until their headway
(Hunyady, Mészáros, Kovács). A local specialty: Psychology was emancipated by
pedagogical psychology. In other words, the launching of the psychology major
and the establishment of the department were based on pedagogical psychology. We
trace the changes by presenting the organizational units of pedagogy and
psychology, also their main representatives, and the features of their
relationship up until the turn of the Millennium. The study is based on local
resources and works of special literature.
A kiterjesztett valóság alkalmazása a nyelvoktatásban különös tekintettel a rendészeti szaknyelvre
Authors: Barnucz Nóra 
Published: April 2021

Összefoglaló. A felsőoktatás egyik legfontosabb feladata, hogy a
munkaerőpiac által megkövetelt kompetenciákra felkészítse a hallgatókat, tehát a
felsőoktatás, a munkaerőpiac, különösen a rendvédelmi szervek által képviselt
speciális munkaerőpiac kongruenciájának kialakítása kiemelt figyelmet érdemel. A
kompetenciák közül a 21. században megjelenő pozíciók ellátásához a digitális
olvasás- és írástudás, valamint a kommunikáció fejlesztése elengedhetetlen. A
kutatási téma célja a hallgatók digitális és verbális kommunikációs szintjének
fejlesztése a szaknyelvi órák keretében különböző nyelvtanulási módszerek és
nyelvtanulási stratégiák alkalmazásával. Tervezett kutatásunkban empirikus
vizsgálatot végzünk a Nemzeti Közszolgálati Egyetem Rendészettudományi Karán
szaknyelvet tanuló nappali tagozatos hallgatókkal.
Summary. The main task of higher education is to prepare students
for the competencies declared by the labour market, thus the development of
congruence between higher education and labour market especially the special
labour market represented by law enforcement deserves special attention. Among
the competencies, digital skills are placed at the forefront, as digital
literacy and communication are essential for 21st-century positions. The aim of
the research topic is to improve students’ digital and verbal communication
levels with the use of different language teaching methods and language learning
strategies in ESP (English for specific purposes) classes. Empirical research
will be carried out with full-time students at the Faculty of Law Enforcement at
the University of Public Service.
Convolutional Neural Network Based Advertisement Classification Models for Online English Newspapers
Authors: Et. al. Pooja Jain, 
Published: April 2021

Image processing for knowledge management and effective information extraction is the key element for steering towards society 5.0. There has been a substantial research and progress in the area of image recognition and classification in the recent years but at the same time, there is a lack of significant work in the field of advertisement image classification from online English newspapers. This research paper analyses and compares various popular image classification techniques to find out the most suitable technique for advertisement image classification problem. Automatic feature extraction without any prior knowledge of features makes Convolutional Neural Networks (CNN) the most suitable technique for advertisement image classification. This paper further explores and implements three different CNN-based image classification models that can classify advertisement images from online English newspapers into four pre-defined categories including Admission-notices, Job-advertisements, Sales and Promotional advertisements and Tenders. These models are trained and tested on an advertisement image dataset collected from four different online English newspapers over a time frame of 15 months. Fine-tuned ResNet50 Model using ‘Transfer-learning’ is found to be the most suitable model for this advertisement image classification task with results exhibiting around 74% accuracy. This CNN-model based automated classification of advertisement images will help newspaper readers in performing exhaustive advertisement search in a category of their own interest, saving the time and efforts of sequential manual search across a range of multiple newspapers. Also, the proposed research will help in performing advertisement analysis and studies.
Implementation and Comparison of Radix-8 Booth Multiplier by using 32-bit Parallel prefix adders for High Speed Arithmetic Applications
Authors: Et. al. Barma Venkata RamaLakshmi 
Published: April 2021

This paper presents the implementation and design of Radix-8 booth Multiplier using 32-bit parallel prefix adders. High performance processors have a high demand in the industrial market. For achieving high performance and to enhance the computational speed multiplier plays a key role in performance of digital system. But the major drawback is it consumes more power , area and delay. To enhance the performance and decrease the area consumption and delay there are many algorithms and techniques. In this paper we designed a radix-8 Booth Multiplier using two parallel prefix adders and compared them for best optimized multiplier. The number of parital products generation can be reduced by n/3 by using radix-8 in the multiplier encoding. To further reduce the additions we have used booth recoding mechanism .We have implemented the design using Kogge stone adder and Brent kung adder. We observed that by using parallel prefix adders reduces the delay further more which results in significant increase in speed of the digital systems. The simulation results are carried out on XILINX VIVADO software.
The Effectiveness of Customary Law to Protect Natural Resources in The National Park in Central Sulawesi
Authors: Et.al Agus Lanini 
Published: April 2021

Most of the local communities living around the forest fulfil their daily needs, depending on the forest resources, but the government and even global policy have enacted the forest as a protected area or national park. The purpose of this research is to understand and explain the principles of customary law concerning the natural resources that exist in the national park, and to determine the effectiveness of customary law in protecting these natural resources. The research method applied to explore community values and attitudes is socio-legal. The research revealed society's habits through exploration, and norms and the rule of law are embraced. Some principles of customary law on natural resources include palia (taboo) and ombo (prohibition) pertinent to natural resource conservation. Both of these principles are adhered to and have been hereditary. The values on utilising natural resources are still complied with (effective), although state law takes a formal approach for any infringement surrounding the national park. However, customary law principles still always need to be a source for environmental or related law.
Machine Learning of the Reverse Migration Models for Population Prediction: A Review
Authors: Et. al. Nur Huzeima Mohd Hussain, 
Published: April 2021

Human migration from rural to urban has historically been prominent in the urbanisation process which associated with economic development that leads to city growth. However, the dwindling supply of natural resources and pressure from the pandemic has threatened economic growth and resulted in changes in human migration; urban to rural. This anecdotal evidence of reverse migration need to be examined and predict related to challenges and expansion of sustainable development The prediction of human migration; related to population size and growth are important for various policy on strategy, planning and industry. Moreover, predicting population mobility can sense the law of migratory flow in advance, and take effective preventive measures, such as crowd evacuation and epidemic diseases. However, migration predictions are notorious for bearing high error, time consuming, complexity and challenging. Therefore, aligning with IR 4.0, this study adopted a significant way to minimize the prediction errors by using a machine learning approach that can predict data in an intelligent way within a broad dataset. This paper present the investigation of the significant models of machine learning in developing reverse migration prediction. Thus, aims of this study is to identify the machine learning models for reverse migration through systematic literature review (SLR) screening.As SLR has recognised to presents a reliable review, this paper measures both, the review from Scopus and Google scholar to determining the signature algorithm for the models. The findings highlighted the decision tree, random forest and linear regression to be the propose algorithms that pursuit the development of the machine learning models for reverse migration in Malaysia.
Addiction behavior practiced by the Adolescent: An observational cross-sectional study
Authors: Yadav Manoj Kumar , Maan Ashok , Chaudhary S S , Manisha  
Published: April 2021

As with tobacco use, alcohol use shows a monotonic increase during adolescents and young adulthood, particularly during the transition out of high school and excessive alcohol consumption can lead to lifelong problems and chronic diseases.: To study the addiction behavior practiced by the Adolescent.An observational cross-sectional study.The present study was carried out in Department of Community Medicine, Santosh Medical College, Ghaziabad & Urban area of district Ghaziabad. 750 Adolescents aged 10 to 19 years studying in the selected schools of urban Ghaziabad were included for the study. The period of study was from November 2011 to October 2012.Proportion was higher (64.8%) in male adolescents in comparison to female adolescents (33.9%). The prevalence of drugs, smoking, tobacco chewing and drinking among adolescents was found to be 2.5%, 21.7%, 9.6% and 15.5% respectively. Among the adolescents, who used tobacco chewing, 61.1% of them were ever users and 38.9% were current users. The students who used smoking, 50.3% of them were ever users and 49.7% were current users. Students who used addicting substance, their encouragement to start addiction was maximum from peers (33.0%). About three-fourth (75.4%) of adolescents who used addicting substance had knowledge of health hazards of addicting substances.: The study evokes an urgent need to stimulate an action to identify those at risk and those who need treatment and prevention of progression of the health risk behaviors, among the adolescents.
Domestic violence: An overview of Sec 498A IPC- A case report
Authors: Gajmer Pooja , Tyagi Swati 
Published: April 2021

Domestic violence is violence or some form of abuse including mental, physical and sexual abuse in a domestic setting, such as in marriage or cohabitation also commonly known as intimate partner violence.It is a common occurrence throughout the world but in India, it is prevalent here as the issues of dowry, male dominance and living in joint family set ups are the norm here. Therefore, these factors play an additional role in making the women, victims of domestic violence. Not only do the women suffer violence from the husband but also from the family members of the husband specially when the issue is of dowry whether lack of it or an unsatisfactory amount. The statistics do not show the correct picture as things are not reported often due to social stigma attached with it and the whole Indian mentality of worrying about other peoples’ opinion. Most of the time, only way the issue reaches the police and courts of law are when either the victim dies due to the injuries, commits suicide or reaches the hospital for treatment. Otherwise the milder forms of abuse are mostly kept well hidden.Prior to 1983, there was no provision in Indian legislation to deal with specifically with domestic violence. When the Indian Penal Code (45 of 1860), was amended in 1983, Section 498A was inserted. Section 498A deals with ‘Matrimonial Cruelty’ perpetrated on a woman. Matrimonial Cruelty in India has now been made a cognizable, Non- bailable and Non-Compoundable offence.
Transfusion support during childbirth for a woman with anti-U and the RHD*weak D type 4.0 allele
Authors: Yin Q. , Srivastava K. , Brust D.G. , Flegel W.A. 
Published: April 2021

Abstract
D– red blood cells (RBCs), always in short supply, and Rh immune globulin (RhIG) are not needed for patient care if D+ RBCs can safely be transfused. According to a recent work group recommendation, patients with the RHD*weak D type 4.0 allele can be considered D+. We report an African American woman who presented for delivery at the end of the third trimester, at which time anti-U and a serologic weak D phenotype were recognized, requiring U–, D– RBC units. We obtained 3 U– RBC units, including 1 D– unit. Later, the RHD*weak D type 4.0 allele was determined by RHD genotyping, only 6 days before delivery. The patient had an uneventful vaginal delivery of a D+ baby. No transfusion was needed for mother or baby. In this case, a pregnant woman with the RHD*weak D type 4.0 allele can safely be managed as D+, relaxing the unnecessary D– restriction for the limited U– RBC supply. The procured U–, D– RBC unit was frozen with 14 days of shelf-life remaining. To conserve D– RBC units, not limited to U–, for patients with a definite need, we recommend molecular analysis of a serologic weak D phenotype before a transfusion becomes imminent. The best time to resolve a serologic weak D phenotype with RHD genotyping is early in a pregnancy.
Immunohematology 2021;37:1–4
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A fatal case of acute hemolytic transfusion reaction caused by anti-Wra: case report and review of the literature
Authors: Espinosa A. , Garvik L.J. , Trung Nguyen N. , Jacobsen B. 
Published: April 2021

Abstract
The red blood cell (RBC) antigen Wra is a low-prevalence antigen first described in 1953 by Holman and assigned to the Diego system in 1995. Because of its low prevalence, Wra is usually absent on commercial screening RBCs and antibody identification panels. When Wr(a+) screening RBCs are available, the corresponding antibody, anti-Wra, is often found in sera from healthy individuals, patients, and pregnant women. Anti-Wra can cause both hemolytic transfusion reactions and hemolytic disease of the fetus and newborn. We describe a fatal acute hemolytic transfusion reaction caused by anti-Wra in a patient with no other RBC alloantibodies. Serologic investigation showed that one of the RBC units the patient received was Wr(a+).
Immunohematology 2021;37:20–24.