bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Hilbert–Schinzel specialization property
Authors: Bodin Arnaud , Dèbes Pierre , König Joachim , Najib Salah 
Published: February 2022

Abstract
We establish a version “over the ring” of
the celebrated Hilbert Irreducibility Theorem. Given finitely many polynomials in

k
+
n

{k+n}

variables,
with coefficients in

ℤ

{\mathbb{Z}}

, of positive degree in the last n variables, we show that if they are irreducible over

ℤ

{\mathbb{Z}}

and satisfy a necessary “Schinzel condition”, then the first k variables can be specialized in a Zariski-dense subset of

ℤ
k

{\mathbb{Z}^{k}}

in such a way that irreducibility over

ℤ

{\mathbb{Z}}

is preserved
for the polynomials in the remaining n variables. The Schinzel condition, which comes from the Schinzel Hypothesis, is that, when specializing the first k variables in

ℤ
k

{\mathbb{Z}^{k}}

, the product of the polynomials should not always be divisible by some common prime number. Our result also improves on a “coprime” version of the Schinzel Hypothesis: under some Schinzel condition, coprime polynomials
assume coprime values.
We prove our results over many other rings than

ℤ

{\mathbb{Z}}

, e.g. UFDs and Dedekind domains.
Experimental Analysis of the Interaction of “Hot” and “Cold” Volume Elements during Thermal Fatigue of a Cooled Component Made from AISI 3161 Steel
Authors: Beck Tilmann , Lang Karl-Heinz , Vöhringer Otmar , Löhe Detlef 
Published: February 2022

Abstract
Start-stop and load change procedures of combustion engines result in inhomogenous and instationary temperature fields, which induce cyclic mechanical loadings, e. g., in solid and cooled turbine blades and vanes. The present study shows results of so-called “complex thermal-mechanical fatigue” (CTMF) tests carried out with a two specimen testing system in order to simulate the interaction of the “hot” outer and the “cold” inner side of a cooled turbine blade. The test samples were made from the austenitic steel AISI 316 L. Specimen 1 represents the “hot” and specimen 2 the “cold” side of the blade, respectively. Both specimens were loaded by individual thermal cycles with closed loop control of the temperature. The mechanical interaction of the “hot” and the “cold” side was simulated by keeping the total strains of both specimes at identical values and keeping the sum of the forces at a value of zero at every moment throughout the tests. The results are discussed on the background of the microstructures resulting from the individual loadings of specimen 1 and 2.
Elevated Temperature Deformation of P/M Dispersion - Strengthened Copper and Aluminium
Authors: Upadhyaya G. S. 
Published: February 2022

Abstract
Paper deals with the low cost route of the preparation of SiC/Si3N4 nanocomposite. It is shown that SiC nanoinclusions distributed within the Si3N4 matrix can be produced by carbothermal reduction of fine SiO2 particles added into a starting mixture. The amount of SiC nanoinclusions can be adjusted by the appropriate amount of SiO2 + C additives. Almost full density of the final composite was achieved by hot-pressing at 1750 °C using a “special” heating regime allowing the outgasing of CO as a product of carbothermal reduction.
“Order-order” relaxations in intermetallics
Authors: Kozubski Rafał , Kozłowski Mirosław , Pierron-Bohnes Véronique , Pfeiler Wolfgang 
Published: February 2022

Abstract
“Order-order” relaxation processes in high-temperature intermetallics occur after an abrupt change of temperature and are controlled by atomic migration in the almost perfect
superstructure. The related experiments were carried out using systems being of technological interest and representing three common types of superstructures: L12 (Ni3Albased quasi-binaries), L10 (FePd, FePt) and B2 (NiAl, FeAl). The corresponding Monte Carlo (MC) simulations of “Order-order” kinetics involving the Glauber dynamics implemented with vacancy mechanism for atomic jumps were performed. The studies indicate a crucial role of antisite-easy-diffusion channels offered by particular superstructures in determining the character of “Order-order” processes and their relationship to steady-state self-diffusion. Specific mechanisms of the relaxations in triple-defect B2-ordered binaries are discussed.
Similarity considerations on the simulation of turning processes of steels
Authors: Delonnoy Lionel , Hochrainer Thomas , Schulze Volker , Löhe Detlef , Gumbsch Peter 
Published: February 2022

Abstract
In order to investigate size effects occurring in the miniaturization of turning processes a complete dimensional analysis using a materials model for high-speed deformation was performed. The derived dimensionless similarity numbers were used to guide the parameter variation in simplified two-dimensional finite-element simulations for orthogonal cutting. The rate-dependent material model leads to size effects like an increase of the specific cutting force while reducing the cutting depth. A counter-intuitive dependence of the cutting force on cutting velocity is explained using a shear-plane model. The derived dependencies on single input parameters are used to predict output values while simultaneously changing several input parameters.
Local texture and back-end defect in hot extruded AZ91 magnesium alloy
Authors: Schwarzer Robert A. 
Published: February 2022

Abstract
Local texture in hot extruded MgAl9Zn1 alloy has been studied using individual grain orientation measurement (BKD, “Automated EBSD”) in the SEM. In the shaft of a partial extrudate through a circular die orifice, a <0001> ring fiber texture has formed which continuously changes into a spiral fiber texture in the bottom neck. The flow tube of the internal back-end extrusion defect has a distinctly different texture whereby the (0002) lattice planes are preferentially aligned parallel to the radial and the extrusion directions. The formation of this texture is explained by basal glide, the pile-up of the hard billet mantle, and the inhomo-geneous metal flow during the extrusion process.
A comparison of thermal stability in nanocrystalline Ni- and Co-based materials
Authors: Silva Melina da , Klement Uta 
Published: February 2022

Abstract
In this paper the microstructural development upon annealing of nanocrystalline Ni- and Co-based electrodeposits is described. New investigations on Ni, Ni – Fe, and Co–P are compared with previous results on Ni, Co, and Ni –P in terms of microstructural changes and stabilizing mechanisms. The conclusions are: pure nanocrystalline Ni and Co are stabilized by impurities in the grain boundaries. In the case of Co, also an allotropic phase transformation influences the occurrence of abnormal grain growth. Alloying and/or adding solutes is found to increase thermal stability. While in Ni-20 at.% Fe the ordering transformation is expected to be the reason for stabilization, in strongly segregating systems (Ni –P and Co–P) the stabilizing effect is the decrease in grain boundary energy due to solute segregation. After precipitation, Zener pinning still hinders grain boundary migration, but not sufficient to stabilize the nanocrystalline structure.
Correlation between the average composition of coherent superlattice and the GMR properties of electrodeposited Co–Cu/Cu multilayers
Authors: Cziráki Ágnes , Tichy Géza 
Published: February 2022

Abstract
In contrast to vacuum-deposited Co/Cu multilayers the electrodeposited ones do not exhibit any oscillation behaviour in magnetic resistance properties as a function of the thickness of non-magnetic Cu layers. According to the magnetic investigations they show ferromagnetic and superparamagnetic character as a consequence of the lack of antiparallel coupling of neighbouring magnetic layers. Magnetic resistance observed on electrodeposited Co– Cu/Cu multilayers is believed to originate from the randomly antiparallel oriented magnetic domains. In the present paper the evolution of magnetic resistance properties is studied against the average Cu concentration of multilayers prepared under a Cu deposition potential of –0.25 and – 0.62 V, and the best magnetic resistance properties were found in the films with composition of 52% and 60% Cu, respectively. The average concentration was determined by electron microscopic and X-ray diffraction measurements.
X-ray elastic constants determined by the combination of sin2
ψ and substrate-curvature methods
Authors: Eiper Ernst , Martinschitz Klaus J. , Gerlach Jürgen W. , Lackner Jürgen M. , Zizak Ivo , Darowski Nora , Keckes Jozef 
Published: February 2022

Abstract
A new methodology is presented that allows the quantification of experimental X-ray elastic constants of polycrystalline thin films without use of special diffractometer attachments. The approach is based on the combination of sin2
ψ and curvature methods. The elastic strains in the polycrystalline films are characterized by the measurement of lattice spacings at different sample tilt angles, while the macroscopic stress in the film is calculated from the substrate curvature applying the Stoney formula. The radius of the curvature is determined from a sequence of rocking curves measured at different sample positions. The method is demonstrated on Al thin films deposited on Si(100) substrates. The X-ray diffraction measurements were performed at the synchrotron source BESSY in Berlin.
Unlocking approximation for in-memory computing with Cartesian genetic programming and computer algebra for arithmetic circuits
Authors: Froehlich Saman , Drechsler Rolf 
Published: February 2022

AbstractWith ReRAM being a non-volative memory technology, which features low power consumption, high scalability and allows for in-memory computing, it is a promising candidate for future computer architectures. Approximate computing is a design paradigm, which aims at reducing the complexity of hardware by trading off accuracy for area and/or delay.In this article, we introduce approximate computing techniques to in-memory computing. We extend existing compilation techniques for theProgrammable Logic in-Memory(PLiM) computer architecture, by adapting state-of-the-art approximate computing techniques for arithmetic circuits. We use Cartesian Genetic Programming for the generation of approximate circuits and evaluate them using a Symbolic Computer Algebra-based technique with respect to error-metrics. In our experiments, we show that we can outperform state-of-the-art handcrafted approximate adder designs.
Compound motion detection based on OAM interferometry
Authors: Ren Yuan , Qiu Song , Liu Tong , Liu Zhengliang 
Published: February 2022

Abstract
The simultaneous and independent measurement of multiple movement forms is a significant issue to be solved in research. In this paper, we proposed a method that combines the self-interference of conjugated optical vortices and external interference of plane waves, and successfully realize the independent measurement of both rotation and rectilinear motion. Three kinds of interference schemes based on vortex beams are analyzed theoretically and verified experimentally. The results show that the double interference between conjugated optical vortices and Gaussian beam can detect the motion along and perpendicular to the beam propagation direction even under complex motion background, providing a powerful way to detect the multiple movement forms of a target. Our work may pave a new way for the detection of spatial noncooperative targets and stimulate the invention of new detection equipment.
The crystal structure of poly[μ2-aqua- aqua-(μ3-(E)-2-(4-((2-carbamothioylhydrazineylidene)methyl)phenoxy)acetato-κ3
O:S:S)sodium(I)], C10H14N3O5SNa
Authors: Tai Xi-Shi , Wang Li-Hua , Xia Yu-Pei 
Published: February 2022

Abstract
C10H14N3O5SNa, triclinic,

P

1
‾

$P\overline{1}$

(no. 2), a = 6.7015(5) Å, b = 7.5656(5) Å, c = 14.1332(8) Å, β = 93.159(5)°, V = 654.71(8) Å3, Z = 2, R

gt
(F) = 0.0357, wR

ref
(F
2) = 0.0872, T = 273 K.
Simple models for tensile modulus of shape memory polymer nanocomposites at ambient temperature
Authors: Molaabasi Fatemeh , Zare Yasser , Rhee Kyong Yop 
Published: February 2022

Abstract
This article analyzes the tensile modulus of shape memory polymer nanocomposites (SMPNs) at ambient temperature. Several conventional models, such as rule of mixtures, Halpin–Tsai and Kerner–Nielsen, cannot practically estimate the modulus due to the absence of some main parameters for nanocomposites. Additionally, some parameters in Kerner–Nielsen and Sato–Furukawa models are useless and ineffective, due to the small concentration and high modulus of nanofillers in SMPNs. Therefore, Kerner–Nielsen and Sato–Furukawa models are simplified and modified to deliver the simple models for calculation of modulus in SMPNs. Various nanocomposite samples are provided to prove the validity of the suggested models. The results demonstrate that the predictions of the suggested models have a good match with the experimental results. The models also demonstrate high simplicity and good accuracy for the calculation of modulus in SMPNs at ambient temperature. Generally, the calculated results disclose that the modified Kerner–Nielsen model is preferable for approximation of modulus in SMPNs.
Was ist Modern Monetary Theory?
Authors: Ehnts Dirk , Höfgen Maurice 
Published: February 2022

Zusammenfassung
Die Modern Monetary Theory (MMT) ist nicht zuletzt durch die hohen Defizite und Staatsschulden in der Folge der Corona-Pandemie populär geworden. In diesem Beitrag erklären wir die empirische Theorie, die vor allem die Funktionsweise des Geldsystems beschreibt. Die MMT macht deutlich, dass staatliche Ausgaben nicht „finanziert“ werden können, weder durch Steuern noch durch Staatsanleihen. Sämtliche Zahlungen erfolgen vielmehr durch das Kreditieren eines Kontos einer Bank bei der jeweiligen Zentralbank. Die Zentralbanken agieren als Hausbank des Staates – auch in der Eurozone. Politische Regeln können die Staatsausgaben zwar beschränken, doch ist der Staat als Schöpfer des Geldes maßgeblich für die Höhe der Beschäftigung verantwortlich und kann mit einer Jobgarantie Vollbeschäftigung erreichen.
Models as signs of the imaginary: Peirce, Pierce, Langer, and the non-discursive sign
Authors: West Joel 
Published: February 2022

Abstract
It is common for us to see models as exemplars of things that exist. Models, instead, are merely Peircean indexes, in that they only point to their objects, objects which may in themselves not exist. This is to say that these examples may only exist as thoughts that point to other thoughts or even ideas that point to objects that may not exist because they are paradoxical.
The use of clarificatory metaphors in argumentative discourse in British Public Bill Committee debates
Authors: Renardel de Lavalette Kiki Y. , Andone Corina , Steen Gerard J. 
Published: February 2022

Abstract
In this paper, we aim to explain how metaphors can be employed for clarificatory purposes in British parliamentary debates. These debates typically involve an exchange of arguments concerning complex issues, which more often than not may require clarification. In clarifying something complex, metaphors are often employed in which an unfamiliar and abstract concept is compared to a more familiar and concrete concept. Because the choice of metaphor affects how an issue is understood and reasoned about, discussants may wish to oppose such a metaphor to avoid biased conceptions or even misunderstandings of the issue under discussion. We present a number of cases in which metaphors used for clarificatory purposes are opposed in a British Public Bill Committee debate on the Digital Economy Bill. Our analyses uncover which metaphors are used for clarificatory purposes, to what extent these clarificatory metaphors contribute to furthering the resolution of a debate on the acceptability of legislative proposals, and what consequences opposing such metaphors may have on the continuation of the debate.
PENANAMAN SIKAP SOSIAL MELALUI PEMBELAJARAN IPSPADA SISWA SMP ISLAM SUDIRMAN AMBARAWAKABUPATEN SEMARANG
Authors: Utami Yekti , Purnomo Arif , Salam Rudi 
Published: February 2022

SMP Islam Sudirman Ambarawa is one of the schools that is implementing the instilling of social attitudes through programs in schools. This study whose aims to find out: (1) to describe the background of social science teachers instill a social attitude of SMP Islam Sudirman Ambarawaâ€™s students, (2) the process of cultivation of the social attitude in social studies, and (3) the means used to instill an social attitude.This study uses qualitative methods to the design of case studies.Data collection techniques are observation, interviews, and documentation. Analysis of data using interactive analysis techniques.The results showed that (1) Background the social studies teacher at SMP Islam Sudirman Ambarawa instill social attitude is related to the role of humans as social and to prepare students to live more organized and focused to become good citizens, (2) the process of instilling the social attitudes through social studies internalized in the learning process and direcly, (3) facilities that supports the growing process of social attitudes is through extracurricular activities and other routine activities in the school.

SMP Islam Sudirman Ambarawa merupakan salah satu sekolah yang melaksanakan penanaman sikap sosial pada siswa. Penelitian ini bertujuan: (1) untuk mengetahui latar belakang guru IPS menanamkan sikap sosial pada siswa SMP Islam Sudirman Ambarawa, (2) proses penanaman sikap sosial melalui pembelajaran IPS, dan (3) sarana yang digunakan untuk menanamkan sikap sosial. Penelitian ini menggunakan metode kualitatif dengan desain studi kasus.Teknik pengumpulan data adalah observasi, wawancara, dan dokumentasi. Analisis data menggunakan teknik analisis model interaktif. Hasil penelitian menunjukan bahwa (1) latar belakang guru IPS SMP Islam Sudirman Ambarawa menanamkan sikap sosial adalah berhubungan dengan peran manusia sebagai makhluk sosial serta untuk menyiapkan peserta didik untuk hidup lebih teratur dan terarah sehingga menjadi warga negara yang baik, (2) proses penanaman sikap sosial melalui pembelajaran IPS terinternalisasi dalam proses pembelajaran maupun disampaikan secara langsung, dan (3) sarana penanaman sikap sosial dilakukan melalui kegiatan ekstrakurikuler dan kegiatan rutin lainnya yang ada di sekolah.
EFEKTIVITAS MODEL PEMBELAJARAN PROBLEM BASED LEARNING DALAM PEMBELAJARAN IPS KELAS VII SMP TEUKU UMAR SEMARANG
Authors: Lestari Sri Hapsari , . Tukidi , Ginanjar Asep 
Published: February 2022

The purpose of this study was to determine the effectiveness of PBL learning models in learning process of social studies class on the VII grade studentsâ€™ of SMP Teuku Umar Semarang from the teacher skill of managing the learning process, students activity in the learning process, and studentsâ€™ learning outcomes classically.This research uses quantitative method with pre-experimental design with one group pretest post-test design. Data collection methods used are tests, observations, and documentation.The results showed that teacher included high category in learning activities, learning results had increased and achieved completeness in classical manner, so it can be said that learning process using PBL learning model is effective.The calculation results of tcount = -30, 428 and t table = 2.039 because thitung<ttable then Ho is rejected. This means that the posttest results are better than the results of the pretest, or there is an increase in results.

Tujuan dari penelitian ini adalah untuk mengetahui efektivitas model pembelajaran PBL dalam pembelajaran IPS kelas VII SMP Teuku Umar Semarang kemampuan guru mengelola pembelajaran, aktivitas peserta didik dalam kegiatan pembelajaran, ketuntasan hasil belajar secara klasikal.Penelitian ini menggunakan metode kuantitatif dengan desain eksperimen menggunakan pre-eksperimental design dengan desain one group pretest postest design.Metode pengumpulan data yang digunakan adalah tes, observasi, dan dokumentasi.Hasil penelitian menunjukkan bahwa guru dalam mengola pembelajaran termasuk kategori tinggi, aktivitas belajar masuk pada kategori tinggi, hasil belajar peserta didik mengalami peningkatan dan mencapai ketuntasan secara klasikal, sehingga dapat dikatakan bahwa pembelajaran menggunakan model pembelajaran PBL efektif. Hasil perhitungan thitung=-30, 428 dan ttabel = 2,039 karena thitung < ttabel maka Ho ditolak. Hal ini berarti hasil posttest lebih baik daripada hasil pretest, atau ada peningkatan hasil.
Efektivitas Pemberian Reward dalam Pembelajaran IPS untuk Meningkatkan Motivasi Belajar Kelas VII Mts. Negeri Margadana Kota Tegal
Authors: Fatonah Adefyanti Dwi Indah , Purnomo Arif , Salam Rudi 
Published: February 2022

This study aims to determine the effectiveness of reward in teaching social studies to enhance learning motivation in class VII MTs Negeri Margadana Tegal. The reason for taking this researchawareness of teachers there to provide motivation for students is still minimal and low activity of students in participating in learning, The design of this study is a Quasi Experiment Nonequivalent Control Group Design. The population of this research is the students of class VII MTs Negeri Margadana Tegal. Samples of the study were students of class VII G and Class H with purpusive sampling technique sampling. Tools and data collection techniques used in this study is the observation, questionnaires, tests, and documentation. The technique of analyzing data used in this study is the normality test, homogenitas test, t-test. In this research, obtained t count value 2,230 and t table at 5% significance level with t table 66 is 1.66, so t count = 2,230 > t table = 1.66.
Penelitian ini bertujuan untuk mengetahui efektivitas pemberian reward dalam pembelajaran IPS untuk meningkatkan motivasi belajar kelas VII di MTs Negeri Margadana Kota tegal. Alasan mengambil penelitian ini karena kesadaran guru di sana untuk memberikan motivasi kepada siswanya masih minim dan juga rendahnya aktivitas siswa dalam mengikuti pembelajaran. Desain dari penelitian ini adalah Eksperimen Quasi Nonequivalent Control Group Design. Populasi dari penelitian ini adalah siswa kelas VII MTs Negeri Margadana Kota Tegal. Sampel dari penelitian adalah siswa kelas VII G dan Kelas VII H dengan teknik sampling purpusive sampling. Alat dan teknik pengumpulan data yang digunakan pada penelitian ini adalah observasi, angket, tes, dan dokumentasi. . Teknis analisis data yang digunakan dalam penelitian ini adalah uji normalitas, uji homogenias, uji t. Dalam penelitian ini, diperoleh t hitung bernilai 2,230 dan t tabel pada taraf signifikansi 5% dengan t tabel 66 adalah 1,66, sehingga t hitung = 2,230 > t tabel = 1,66.