bluuebunny/crossref_metadata_2025_split huggingface dataset:
High-resolution spectroscopy of gaseous 83mKr conversion electrons with the KATRIN experiment
Authors: Altenmüller K , Arenz M , Baek W-J , Beck M , Beglarian A , Behrens J , Bergmann T , Berlev A , Besserer U , Blaum K , Block F , Bobien S , Bode T , Bornschein B , Bornschein L , Brunst T , Buzinsky N , Chilingaryan S , Choi W Q , Deffert M , Doe P J , Dragoun O , Drexlin G , Dyba S , Edzards F , Eitel K , Ellinger E , Engel R , Enomoto S , Eversheim D , Fedkevych M , Formaggio J A , Fränkle F M , Franklin G B , Friedel F , Fulst A , Gil W , Glück F , Ureña A Gonzalez , Grohmann S , Grössle R , Gumbsheimer R , Hackenjos M , Hannen V , Harms F , Haußmann N , Heizmann F , Helbing K , Hickford S , Hilk D , Hillesheimer D , Hinz D , Howe M A , Huber A , Jansen A , Kellerer J , Kernert N , Kippenbrock L , Klein M , Kopmann A , Korzeczek M , Kovalík A , Krasch B , Kraus M , Lasserre T , Lebeda O , Letnev J , Lokhov A , Machatschek M , Marsteller A , Martin E L , Mertens S , Mirz S , Monreal B , Neumann H , Niemes S , Off A , Osipowicz A , Otten E , Parno D S , Plischke P , Pollithy A , Poon A W P , Priester F , C-O Ranitzsch P , Rest O , Robertson R G H , Roccati F , Rodenbeck C , Röllig M , Röttele C , Ryšavý M , Sack R , Saenz A , Schimpf L , Schlösser K , Schlösser M , Schönung K , Schrank M , Seitz-Moskaliuk H , Sentkerestiová J , Sibille V , Slezák M , Steidl M , Steinbrink N , Sturm M , Suchopar M , Suesser M , Telle H H , Thorne L A , Thümmler T , Titov N , Tkachev I , Trost N , Valerius K , Vénos D , Vianden R , Hernández A P Vizcaya , Weber M , Weinheimer C , Welte S , Wendel J , Wilkerson J F , Wolf J , Wüstling S , Zadoroghny S , Zeller G 
Published: May 2020

Abstract
In this work, we present the first spectroscopic measurements of conversion electrons originating from the decay of metastable gaseous 83mKr with the Karlsruhe Tritium Neutrino (KATRIN) experiment. The obtained results represent one of the major commissioning milestones for the subsequent direct neutrino mass measurement with KATRIN. The successful campaign demonstrates the functionalities of the KATRIN beamline. Precise measurement of the narrow K-32, L3-32, and N2,3-32 conversion electron lines allowed to verify the eV-scale energy resolution of the KATRIN main spectrometer necessary for competitive measurement of the absolute neutrino mass scale.
Phase diagram of the frustrated FCC antiferromagnet from effective-field theory
Authors: Ehteshami Hossein , Ackland Graeme J 
Published: May 2020

Abstract
The phase diagram of a face-centred cubic (FCC) antiferromagnet is calculated from the effective field theory (EFT) of Honmura and Kaneyoshi taking into account not only the effect of interaction with nearest neighbours, J
1, but also the effect of second neighbours, J
2. The phase diagram for the nearest neighbour case away from the triple point, which in our calculations is predicted to be at H = 4 and T = 0, is close to cluster variation method (CVM) and Monte Carlo (MC) results. Similar to MC and CVM predictions, we observe that the increasing second neighbours interaction pushes the triple point towards zero field. Our calculations also show that for α = −J
2/J
1 = 0.3, the triple point merges with the transition point of the L10 phase, one of the ground states, at H = 0 and changes the nature of phase transition from first- to second-order, in full agreement with Monte Carlo predictions. The phase diagram with the effect of second neighbours calculated for several values of α are in good agreement with available MC and CVM predictions.
Shape memory alloy tube actuators inherently enable internal fluidic cooling for a robotic finger under force control
Authors: Ades Craig J , Dilibal Savas , Engeberg Erik D 
Published: May 2020

Abstract
This paper presents the design, control and evaluation of a novel robotic finger actuated by shape memory alloy (SMA) tubes which intrinsically afford an internal conduit for fluidic cooling. The SMA tubes are thermomechanically programmed to flex the robotic finger when Joule heated. A superelastic SMA plate provides a spring return motion to extend the finger when cooling liquid is pumped through the internal channel of the SMA tube actuators. The mechanical design and nonlinear force controller are presented for this unique robotic finger. Sinusoidal and step response experiments demonstrate excellent error minimization when operated below the bandwidth which was empirically determined to be 6 rad s−1. Disturbance rejection experiments are also performed to demonstrate the potential to minimize externally applied forces. This method of internal liquid cooling of Joule heated SMA tubes simultaneously increases the system bandwidth and expands the potential uses of SMA actuators for robotic applications. The results show that this novel robotic finger is capable of precise force control and has a high strength to weight ratio. The finger can apply a force of 4.35 N and has a mass of 30 g. Implementing this design into wearable prosthetic devices could enable lightweight, high strength applications previously not achievable.
Structural Analysis of Alloy Wheels
Authors: Hawkins George , Kumar Vikas 
Published: May 2020

Abstract
The wheel of a car plays a pivotal role to endure the weight applied on it. Usually spokes behave as the supports between the hub and the rim. These spokes must have adequate stiffness and strength to dodge the failure of the wheel. In current days these wheels are comprised of, magnesium alloy, steel and aluminum alloy. To decrease the weight of the wheel, numerous wheel designs are executed and applied for automobiles. As regard to the study of the vehicle stability, it is adequate to perform the structural analysis of the wheels so as to know the equivalent modal considerations.
In this work, a Cad model of a typical alloy wheel was designed in SOLIDWORKS software and dynamic analysis is performed on this model. The Stress analysis and Fatigue analysis was done on the chosen design. By observing the results we can see whether the design of wheel and the material is feasible or not under applied load conditions. A comparative study is performed by using results of the analysis of the wheel using different materials. The materials used are: Magnesium Alloy, Stainless Steel and Aluminum Alloy and Titanium Alloy in the end best suitable material for the wheel is determined
Comparative Analysis of 5 level, 7 level and 9 level Half-Bridge Modular Multilevel Converter
Authors: Jatin  , Agarwal Anshul , Kumar Jadoun Vinay 
Published: May 2020

Abstract
This paper uses the topology of Modular Multilevel Converter (MMC) to demonstrate Direct Current (DC) / Alternating current (AC) conversion implementation. For drive applications, a theoretical background is presented. The 5-stage MMC switching system is explained. The simulation was performed using cascaded interconnection of half-bridge submodules for single legs of three phase 5 level, 7 level and 9 level modular multilevel inverters. This paper is intended to examine Total Harmonic Distortion (THD) for different voltage stages.
Numerical Investigation On Free Convection Around Elliptical Cylinders In A Circular Enclosure
Authors: Patpatiya Parth , Yadav Bhavana , Jain Soumya , Baura Srishti 
Published: May 2020

Abstract
This paper acquaints with the study of steady state laminar natural convection around heated elliptical plate placed inside a relatively cold circular enclosure subjected to varying number of elliptical plates (2, 3 and 4), Rayleigh number (104, 105, 106) and centre to centre distance between the elliptical plates(xc). The effect of these three parameters are observed and analyzed based on the simulation performed using Finite Volume Method (FVM) based solver. Heat transfer characteristics are analyzed for all the cases in terms of isotherms, streamlines. Plots of average nusselt number along active enclosure walls and along the fringe of the inner Cylinders are illustrated in a graphical manner. Two dimensional study is followed by considering air as the fluid in the enclosure (Prandlt number=0.71). Grid independence test followed by validation of experimental results is carried out. Eventually parametric analysis concludes by analyzing the effects of altering the various parameters on the strength of buoyancy affected flow.
Assessment of the use of FEM for computation of Electromagnetic Forces, Losses and Design of Transformers
Authors: Vibhuti  , Walia Genius , Bhalla Deepika 
Published: May 2020

Abstract
This paper reviews the published work on power transformers for assessment of the electrical, magnetic losses, and electromagnetic forces produced during normal and short circuit conditions. The different methods used are analytical method, integral equation method, boundary element method, and finite element method (FEM). The copper losses and eddy currents within the copper conductors/windings need to be assessed to estimate the heat generate and compute the efficiency. The knowledge of the eddy current losses in the core and stray losses in each component of the transformer can help in the design improvement. Earlier 2D FEM and now 3D FEM has been used to evaluate the electromagnetic flux under normal conditions, the effect of the in-rush phenomenon, assessment of mechanical strength of windings, insulation, computation of short circuit forces and need of the mechanical support components during fault conditions. This paper gives an overview of the work done on the computation of electromagnetic forces, losses, and design of transformers using FEM to assess the scope for further work.
Mathematical modelling skills of prospective mathematics teachers in problem-solving
Authors: Hapizah  , Mulyono B 
Published: May 2020

Abstract
This paper aims to explain the results of the analysis of mathematical modelling skills of prospective mathematics teacher in problem-solving. The data collection used is a written test. The research subjects were prospective mathematics teachers at Mathematics Education Department of Teaching and Education Faculty of Universitas Sriwijaya. The results of the study state that mathematical modelling skills of prospective mathematics teachers in problem-solving are categorized sufficient.
On teaching learning for proportion using musi tour context
Authors: Nursa N F , Hartono Y , Somakim  
Published: May 2020

Abstract
This study aims to produce a learning trajectory that assist student to understand in the study of proportion. The learning approach used Pendidikan Matematika Realistik Indonesia (PMRI). This research used design research that are three phases, preparing for the experiment, the design experiment, and the retrospective analysis. Musi tour context used in the series of learning activities to developing Hypothetical Learning Trajectory (HLT). Then, HLT has been designed compared with actual learning during the teaching experiment. Theoretical development implemented through an interactive process on three phases of design research that aims to giving contribution about Local Instruction Theory (LIT) for assist student studying proportion. Interviews, video recordings, photograph and giving pretest and posttest are undertaken to collect the data. The result of the retrospective analysis is Musi tour context as a learning model can assist student understand in the study of proportion.
Attitude of middle school students toward mathematical modelling
Authors: Fitri P , Hiltrimartin C , Indaryanti  , Hapizah  
Published: May 2020

AbstractThis research is a descriptive study that aims to determine student attitudes towards mathematical modeling in secondary schools in Palembang. Subjects of this study involves graders VII.6 of SMP Negeri 1 7 Palembang, graders X.IPA.1 Palembang SMA 02 and SMA 10 XI.IPA.5 class Palembang. The data collection technique in this study was a written questionnaire. Questionnaire data analysis is based on a Likert Scale Questionnaire. The results of this study are students’ attitudes are quite good towards problem solving in mathematical modeling. This is evidenced by the results of the data as much as 38.62 %.
Mathematical proof analysis using mathematical induction of grade XI students
Authors: Emeira G , Hapizah  , Scristia  
Published: May 2020

Abstract
The purpose of this study is to provide an overview on how students do mathematical proof using mathematical induction through the activity of compiling and validating proof. It is known that mathematical induction is a proof used to prove the truth of a mathematical statement related to natural numbers. The subjects of this study were 34 students of grade XI SMA Negeri 13 Palembang. The results showed that (1) students were able to prove on the base of the induction step by showing the truth when n is assumed by one member of a natural number, (2) students were able to make a mathematical induction hypothesis by assuming the statement n = k is true, (3) students still make mistakes in performing mathematical induction steps precisely on the part when doing algebra manipulation to prove n = k + 1 is true from the statement n = k that has been considered true, and (4) Students still do not understand the concept of mathematical induction as indicated by the large number of students unable to do the activities of compiling proof by mathematical induction and there are still some students who write conclusions on the activity of compiling proof that the statement is proven true without showing the truth of the induction step
Scaffolding in mathematical problem-solving
Authors: Arifin S , Zulkardi  , Putri R I I , Hartono Y , Susanti E 
Published: May 2020

Abstract
This research is a descriptive study that aims to describe the scaffolding conducted by the teacher in helping students and students’ strategies in solving problems. The subjects of this research were 20 students grade IX of junior high school number 3 Palembang. The instruments used in this study were field notes, observation sheets, student worksheets and interviews. Based on the research results, scaffolding can help solve students’ problem solving. Scaffolding in form a written questions and directed guidance with step by step are as a bridge in solving problems. Scaffolding which starts with sketching can be teacher feedback in knowing the concept of student images. Differences in students solution and student strategies are influenced by prior knowledge, background experience, intellectual abilities, and writing abilities in mathematical language.
Mathematics reasoning through inquiry learning model
Authors: Khansa N , Susanti E , Indaryanti  , Sari N , Simarmata R H 
Published: May 2020

Abstract
This research is a descriptive study that aims to study mathematical thinking aspects of reasoning through inquiry learning models on the slope of line. This research focus is on deductive deduction. The subject of this study were 3 students in class VIII of SMP Negeri 1 Indralaya Utara. Based on the results of tests and interviews, it can be concluded that students have mathematical thinking. Students can make conclusions based on a general picture. However, one of the indicator is using algorithms in calculations. There are some students still have difficulty in calculations because of constraints in arithmetic operations and errors in determining the coordinates which are the prerequisite material in this learning. Interesting, students unable to make correct conclusions.
The 6th grade students’ view in understanding mathematics through reading mathematics textbook
Authors: Turidho A , Maharani Y , Darmawijoyo  
Published: May 2020

Abstract
This research aims to describe students’ views in understanding mathematics by reading a mathematics textbook. The subjects of this research were 6 students on grade VI at Singapore International School (SIS) Palembang. This is descriptive research. The research instruments were interviews and questionnaires. Based on the results, 50% of students read a mathematics textbook by reading definitions or rules, learning examples of the problems and doing exercises. And 50% of students read a mathematics textbook by learning examples of the problems, reading definitions or rules and doing exercises. In understanding mathematics, 16.7% of students felt understood mathematics textbook after understood the definitions or rules, 33.3% of students felt understood mathematics textbook after doing the mathematics problems, 33.3% of students felt understood mathematics textbook after doing exercises and 16.7% of students felt understood mathematics textbook after doing mathematics problems and understanding definitions or rules.
Development of interactive multimedia for learning physics based on traditional games
Authors: Wiyono K. , Ismet I. , Saparini S. 
Published: May 2020

Abstract
This study aims to produce interactive multimedia based on valid and practical traditional games on impulse and momentum material, as well as the effective use of interactive multimedia. This research implements Rowntree development model which consists of planning stage, development stage and evaluation stage. The evaluation stage uses Tessmer formative evaluation (include of self evaluation, expert review, one-to-one evaluation, small group, and field test. Data collection techniques used were expert validation form, student response questionnaire, and learning outcome test. The results of expert validation obtained content validity by 81.56% the category is valid and layout validity 91.87% the category is very valid. The practicality test results at one to one stage were 96.21% the category was very practical and the small group stage was 92.42% the category was very practical. Furthermore, the effectiveness of the use of interactive multimedia developed to learning outcomes is obtained through the field test stage with an n-gain of 0.51 including the medium category. Based on this study it can be concluded that interactive multimedia based on traditional games as an innovation to preserve local wisdom in impulse and momentum materials worthy of use.
Virtual and mixed reality in the study of the geometry of the crystal lattice
Authors: Zakharov P V , Vdovin R S , Markidonov A V , Kochkin A S , Vdovin A S 
Published: May 2020

Abstract
The article considers the possibility of using virtual and mixed reality in studying the geometry of the crystal lattice in the framework of the course of solid state physics. The application of mixed and virtual reality technologies in the study of various branches of physics is receiving more and more attention. Virtual reality headsets were used in practical and laboratory classes, where students had to create crystal structures and carry out modeling of various processes. When studying complex spatial objects of crystallography, virtual reality technology allowed students to familiarize themselves with the object of study in more detail, understand the structure of crystals and, accordingly, complete the task in a timely manner. At the same time, the prolonged use of virtual reality headsets led to rapid fatigue of students.
Analysis of the stressed-deformed state of a pipeline with curved line parts in frozen soil
Authors: Kulakov P A , Rubtsov A V , Afanasenko Z R , Mukhametzyanov V G , Bayazitov M I 
Published: May 2020

Abstract
The paper presents a methodology for calculating the stress-deformed state of the pipeline. All dimensions required for calculations are given. The object of research is a section of an elevated trunk pipe with curved sections transporting oil. The stress-deformed state of the pipeline was calculated considering and without considering soil conditions using the SolidWorks PC. According to the results of all the calculations of the stress-deformed state of the pipe with curved sections, the dependence of the stress distribution over the zones of the pipeline on the strength of frost heaving of the soil is derived.
Radial profile of dissipation rate for turbulent flow of incompressible fluid in round direct pipe based on generalized local balance model
Authors: Balonishnikov Alexander , Opalikhina Olga 
Published: May 2020

Abstract
The article is focused on the problem of generalized local balance turbulence model. Generalized local balance turbulence model is considered. The one-parameter turbulence model is based on semi-empirical dissipation rate transport equation with negative coefficient of diffusion. To determine a coefficient of this equation, Laplace’s method of asymptotic estimation of a double integral is used. To compute radial dissipation profile the turbulence model is applied to the pipe flow. The known wall and axial functions are used as boundary conditions. The turbulence model is applied to the pipe flow to compute radial dissipation profile, well-known wall and axial functions are used as boundary conditions. Comparisons with known experimental data are given.
Impact of IoT on the automation of processes in Smart Cities: security issues and world experience
Authors: Mentsiev Adam U , Engel Mahdi V , Gudaeva Diana-Madina M-E 
Published: May 2020

Abstract
The idea of Smart Cities is inconceivable without automating the basic services and processes such as traffic, communication, and data sharing. It is imperative for smart cities to make use of all the fluid connections that IoT offers in order to achieve its goal of providing quality life to people living in it, through the incorporation of smart technologies. Smart cities seek to connect anything that has an on and off switch to an integrated network that contains all the devices connected to the internet, from toasters to rigs in oil fields. This research explores security issues of IoT and considers the best practices if implementation of IoT in different countries around the world.
Temperature condition influence analysis on the mechanoactivated wheat dielectric constant
Authors: Buzunova M Y , Bonnet V V 
Published: May 2020

Abstract
The biochemical properties of the grain depend significantly on the effects of heat and moisture. By regulating the external conditions, it is possible to influence the biochemical processes in grain, to change its biochemical characteristics. The analysis of temperature dependence of electrophysical properties in fine-dispersed non-equilibrium heterogeneous medium has been carried out on the example of mechanically activated wheat. It is shown that the disordering of fine-dispersed grain structure and change of temperature condition have a significant influence on its dielectric properties. The value of the real component of the dielectric constant depends on the degree of samples dispersity, temperature and humidity conditions and the frequency of the external electric field. The study of the dielectric constant spectra showed that the maximum growth of the dielectric parameters corresponds to a temperature close to 100°C and its value increases for wheat samples with lower particles dispersity. The frequency of the external electric field has a significant influence on the dielectric parameters of wheat samples with different degrees of dispersity, which is associated with changes in the structure of the non-equilibrium system as a result of mechanical activation.
Narrow-band correlation processing of signals in a phase direction-finding
Authors: Zhukov A O , Valyaev I N , Kovalenko V P , Turlov Z N , Novikov A S , Kartsan I N , Malanina Yu N 
Published: May 2020

Abstract
The article deals with the phase method of direction finding, based on the dependence of the phase difference of the signals received by the antennas, as well as the correlation signal processing in the phase direction finding, which will assess the possibility of signal direction finding of the “Spectrum-RG” spacecraft, derived in the neighborhood of the L2 Lagrange point located at a distance of one and a half million kilometers from Earth.