cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exchange effects on electron scattering through a quantum dot embedded in a two-dimensional semiconductor structure
Creators: name: Castelano, L. K.
name: Hai, G. -Q.
name: Lee, M. -T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We have developed a theoretical method to study scattering processes of an incident electron through an N-electron quantum dot (QD) embedded in a two-dimensional (2D) semiconductor. The generalized Lippmann-Schwinger equations including the electron-electron exchange interaction in this system are solved for the continuum electron by using the method of continued fractions (MCF) combined with 2D partial-wave expansion technique. The method is applied to a one-electron QD case. Cross-sections are obtained for both the singlet and triplet couplings between the incident electron and the QD electron during the scattering. The total elastic cross-sections as well as the spin-flip scattering cross-sections resulting from the exchange potential are presented. Furthermore, inelastic scattering processes are also studied using a multichannel formalism of the MCF.
description: 11 pages, 4 figures
Nationalismus und Arbeiterbewegung im Baskenland. Ein kritischer Literaturbericht
Creators: name: Mees, Ludger
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Nationalismus und Arbeiterbewegung im Baskenland. Ein kritischer Literaturbericht" of MTS 17 (1996).
description: Moving the Social, Vol 17 (1996): Forschungen zur Arbeiterschaft und Arbeiterbewegung in Spanien
Performance Analysis of Dual-Hop Relaying for THz-RF Wireless Link with Asymmetrical Fading
Creators: name: Bhardwaj, Pranay
name: Zafaruddin, S. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Terahertz (THz) frequency bands can be promising for data transmissions between the core network and access points (AP) for next-generation wireless systems. In this paper, we analyze the performance of a dual-hop THz-RF wireless system where an AP facilitates data transmission between a core network and user equipment (UE). We consider a generalized model for the end-to-end channel with an independent and not identically distributed (i.ni.d.) fading model for THz and RF links using the $α$-$μ$ distribution, the THz link with pointing errors, and asymmetrical relay position. We derive a closed-form expression of the cumulative distribution function (CDF) of the end-to-end signal-to-noise ratio (SNR) for the THz-RF link, which is valid for continuous values of $μ$ for a generalized performance analysis over THz fading channels. Using the derived CDF, we analyze the performance of the THz-RF relayed system using decode-and-forward (DF) protocol by deriving analytical expressions of diversity order, moments of SNR, ergodic capacity, and average BER in terms of system parameters. We also analyze the considered system with an i.i.d. model and develop simplified performance to provide insight on the system behavior analytically under various practically relevant scenarios. Simulation and numerical analysis show a significant effect of fading parameters of the THz link and a nominal effect of normalized beam-width on the performance of the relay-assisted THz-RF system.
description: 14 pages, 9 figures. This work has been submitted to the IEEE for possible publication. arXiv admin note: text overlap with arXiv:2012.13505
Die Selbstwahrnehmung des Ruhrgebiets in der Nachkriegszeit
Creators: name: Goch, Stefan
Publisher: name: Moving the Social
Year: 2015

description: The article centres on the question, which forces contribute to the development that the Ruhr area in Germany is considered by its citizens and by outsiders as an identifiable region at the end of the industrial age. Due to the structural change of the post-war period the “old Ruhr area” with its heavy industrial coinage has been transformed into a “new Ruhr area” with a differentiated structure and a specific image of the region. In particular, the “new middle classes” have created new images of a “Ruhr city” with a special urbanity − differing from other conurbations.
description: Moving the Social, Vol 39 (2008): Raumbildung als mentaler Prozess: Schwerindustrielle Ballungsregionen im Vergleich
Eric Hobsbawm und der Bochumer Historikerpreis 2008 oder: Deutungskraft und Impulse – Perspektiven einer engagierten Geschichtswissenschaft
Creators: name: Mittag, Jürgen
name: Legrand, Benjamin
Publisher: name: Moving the Social
Year: 2015

description: This is the contribution "Eric Hobsbawm und der Bochumer Historikerpreis 2008 oder: Deutungskraft und Impulse – Perspektiven einer engagierten Geschichtswissenschaft" of MTS 40 (2008).
description: Moving the Social, Vol 40 (2008): Forschungen und Forschungsberichte
Die syndikalistische Bewegung in der „Ordnungszelle“ des Reichs
Creators: name: Jenko, Jürgen
Publisher: name: Moving the Social
Year: 2015

description: Helge Döhring: Damit in Bayern Frühling werde! Die syndikalistische
Arbeiterbewegung in Südbayern von 1914 bis 1933
description: Moving the Social, Vol 40 (2008): Forschungen und Forschungsberichte
Kulturelle Umbrüche in der frühen Bundesrepublik
Creators: name: Moitra, Stefan
Publisher: name: Moving the Social
Year: 2015

description: Christian Kuchler, Kirche und Kino. Katholische Filmarbeit in Bayern (1945 –1965), Paderborn (Ferdinand Schöning) 2006, 407 S., 58,00 €
description: Moving the Social, Vol 40 (2008): Forschungen und Forschungsberichte
„Inkorporierung“ und „Normalisierung“ einer Protestbewegung am Beispiel der westdeutschen Umweltproteste in den 1980er Jahren
Creators: name: Engels, Jens Ivo
Publisher: name: Moving the Social
Year: 2015

description: Social or protest movements are mostly analysed in their early stages and when they reach their highest visibility by direct action. The article is devoted to the decay of (successful) social movements. In addition to the well known concept of "institutionalisation" it presents two categories in order to guide the description, i.e. "incorporation" and "normalisation". Incorporation pictures the integration of the movement's actors or goals in existing political, social and institutional structures whereas normalisation considers the integration of the movement's values into predominant value systems. Both categories are meant to elucidate a double-sided process, including the movement's protagonists as well as the society as a whole, transforming both. These processes are exemplified by one of the most important social movements of recent contemporary German history, namely environmentalism during the 1980s. The focus is on the anti-nuclear movement, the debate on Waldsterben (= Forest Death) and on the Öko-Institut (ecological think tank and consulting agency).
description: Moving the Social, Vol 40 (2008): Forschungen und Forschungsberichte
Additional file 14 of Division of developmental phases of freshwater leech Whitmania pigra and key genes related to neurogenesis revealed by whole genome and transcriptome analysis
Creators: name: Liu, Jiali
name: Liu, Jinxin
name: Li, Mingyue
name: Zhou, Lisi
name: Kong, Weijun
name: Zhang, Hailin
name: Jin, Panpan
name: Lu, Fuhua
name: Lin, Gufa
name: Shi, Linchun
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 14: Supplementary file 12. A program that filter clusters in the same KEGG pathway.
PACEMAKER: Avoiding HeART attacks in storage clusters with disk-adaptive redundancy
Creators: name: Kadekodi, Saurabh
name: Maturana, Francisco
name: Subramanya, Suhas Jayaram
name: Yang, Juncheng
name: Rashmi, K. V.
name: Ganger, Gregory R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: B.8.1; C.4; D.4.2; D.4.5

description: Data redundancy provides resilience in large-scale storage clusters, but imposes significant cost overhead. Substantial space-savings can be realized by tuning redundancy schemes to observed disk failure rates. However, prior design proposals for such tuning are unusable in real-world clusters, because the IO load of transitions between schemes overwhelms the storage infrastructure (termed transition overload). This paper analyzes traces for millions of disks from production systems at Google, NetApp, and Backblaze to expose and understand transition overload as a roadblock to disk-adaptive redundancy: transition IO under existing approaches can consume 100% cluster IO continuously for several weeks. Building on the insights drawn, we present PACEMAKER, a low-overhead disk-adaptive redundancy orchestrator. PACEMAKER mitigates transition overload by (1) proactively organizing data layouts to make future transitions efficient, and (2) initiating transitions proactively in a manner that avoids urgency while not compromising on space-savings. Evaluation of PACEMAKER with traces from four large (110K-450K disks) production clusters show that the transition IO requirement decreases to never needing more than 5% cluster IO bandwidth (0.2-0.4% on average). PACEMAKER achieves this while providing overall space-savings of 14-20% and never leaving data under-protected. We also describe and experiment with an integration of PACEMAKER into HDFS.
description: Published in USENIX Symposium on Operating Systems Design and Implementation (OSDI) 2020
„Nicht die Hautfarbe macht den Indigenen“. Eine Diskursanalyse der Bedeutungsgebung des Ethnischen in der zapatistischen Bewegung
Creators: name: Lange, Karina
Publisher: name: Moving the Social
Year: 2015

description: Since the 1970s the prevalence of ethnic social movements has increased in Latin America. Until recently such movements have typically been peasant uprisings, but today ethnic and cultural recognition and indigenous rights form their central discourse. This article focuses on the Zapatista movement, using it as an example to analyse the importance of ethnic identity in the creation of indigenous social movements, and how they are shaped and discursively positioned. This article takes an in-depth look at the Zapatistas’ public statements, the so-called comunicados, as well as key academic debates relating to the two events being examined: the armed rebellion in 1994 and the dialogue about the “rights and culture of indigenous people” in 1996. The discourse analysis uses framing to demonstrate the importance of constructed inclusive and exclusive identification. It deals explicitly with the collective identity that is inherent within social, and in particular, indigenous movements. After this analysis, which focuses mainly on the inner workings of the movement itself, the results are discussed in relation to the “social context of the structure of new collectivity”, as an open, fractional and processual interaction with culture and identity.
description: Moving the Social, Vol 47 (2012): Essays on social history and the history of social movements
Approaching the Heisenberg limit in an atom laser
Creators: name: Jeppesen, M.
name: Dugué, J.
name: Dennis, G. R.
name: Johnsson, M. T.
name: Figl, C.
name: Robins, N. P.
name: Close, J. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present experimental and theoretical results showing the improved beam quality and reduced divergence of an atom laser produced by an optical Raman transition, compared to one produced by an RF transition. We show that Raman outcoupling can eliminate the diverging lens effect that the condensate has on the outcoupled atoms. This substantially improves the beam quality of the atom laser, and the improvement may be greater than a factor of ten for experiments with tight trapping potentials. We show that Raman outcoupling can produce atom lasers whose quality is only limited by the wavefunction shape of the condensate that produces them, typically a factor of 1.3 above the Heisenberg limit.
description: Corrected analysis, added figure
Deutschlandpolitik im Gewerkschaftshaus. Jens Hildebrandt: Gewerkschaften im geteilten Deutschland. Die Beziehungen zwischen DGB und FDGB vom Kalten Krieg bis zur Neuen Ostpolitik 1955 bis 1969, St. Ingbert: Röhrig Universitätsverlag 2010
Creators: name: Remeke, Stefan
Publisher: name: Moving the Social
Year: 2015

description: This is the contribution "Deutschlandpolitik im Gewerkschaftshaus. Jens Hildebrandt: Gewerkschaften im geteilten Deutschland. Die Beziehungen zwischen DGB und FDGB vom Kalten Krieg bis zur Neuen Ostpolitik 1955 bis 1969, St. Ingbert: Röhrig Universitätsverlag 2010" of MTS 47 (2012).
description: Moving the Social, Vol 47 (2012): Essays on social history and the history of social movements
Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO$_3$ films
Creators: name: Liu, Zhengtai
name: Liu, Wanling
name: Zhou, Ruixiang
name: Cai, Songhua
name: Song, Yekai
name: Yao, Qi
name: Lu, Xiangle
name: Liu, Jishan
name: Liu, Zhonghao
name: Wang, Zhen
name: Zheng, Yi
name: Wang, Peng
name: Liu, Zhi
name: Li, Gang
name: Shen, Dawei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electron-boson interaction is fundamental to a thorough understanding of various exotic properties emerging in many-body physics. In photoemission spectroscopy, photoelectron emission due to photon absorption would trigger diverse collective excitations in solids, including the emergence of phonons, magnons, electron-hole pairs, and plasmons, which naturally provides a reliable pathway to study electron-boson couplings. While fingerprints of electron-phonon/-magnon interactions in this state-of-the-art technique have been well investigated, much less is known about electron-plasmon coupling, and direct observation of the band renormalization solely due to electron-plasmon interactions is extremely challenging. Here by utilizing integrated oxide molecular-beam epitaxy and angle-resolved photoemission spectroscopy, we discover the long sought-after pure electron-plasmon coupling-induced low-lying plasmonic-polaron replica bands in epitaxial semimetallic SrIrO$_3$ films, in which the characteristic low carrier concentration and narrow bandwidth combine to provide a unique platform where the electron-plasmon interaction can be investigated kinematically in photoemission spectroscopy. This finding enriches the forms of electron band normalization on collective modes in solids and demonstrates that, to obtain a complete understanding of the quasiparticle dynamics in 5d electron systems, the electron-plasmon interaction should be considered on equal footing with the acknowledged electron-electron interaction and spin-orbit coupling.
description: 34 pages, 4 figures
100 Jahre Bergbau am linken Niederrhein. Stefan Moitra: Tief im Westen. Ein Jahrhundert Steinkohlenförderung am linken Niederrhein. Von Friedrich Heinrich zum Bergwerk West, Bochum: Deutsches Bergbau-Museum 2012
Creators: name: Gawehn, Gunnar
Publisher: name: Moving the Social
Year: 2015

description: Stefan Moitra: Tief im Westen. Ein Jahrhundert Steinkohlenförderung am linken Niederrhein. Von Friedrich Heinrich zum Bergwerk West, Bochum: Deutsches Bergbau-Museum 2012.
description: Moving the Social, Vol 47 (2012): Essays on social history and the history of social movements
Ein jüdisch-amerikanischer Gewerkschafter in Hitlers Berlin. Catherine Collomp/Bruno Groppo (Hg.): An American in Hitler’s Berlin. Abraham Plotkin’s Diary, 1932–1933, Urbana u. a.: University of Illinois Press 2009
Creators: name: Tosstorff, Reiner
Publisher: name: Moving the Social
Year: 2015

description: Catherine Collomp/Bruno Groppo (Hg.): An American in Hitler’s Berlin. Abraham Plotkin’s Diary, 1932–1933, Urbana u. a.: University of Illinois Press 2009.
description: Moving the Social, Vol 47 (2012): Essays on social history and the history of social movements
Low-lying ud anti-s anti-s configurations in a non-relativistic constituent quark model
Creators: name: Wang, W. L.
name: Huang, F.
name: Zhang, Z. Y.
name: Yu, Y. W.
name: Liu, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The energies of the low-lying isoscalar and isovector ud anti-s anti-s configurations with spin-parity J^P=0^+, 1^+, and 2^+ are calculated in a non-relativistic constituent quark model by use of the variational method. The contributions of various parts of the quark-quark interacting potentials including the s-channel interaction are investigated, and the effect of different forms of confinement potential is examined. The model parameters are determined by the same method as in our previous work, and they still can satisfactorily describe the nucleon-nucleon scattering phase shifts and the hyperon-nucleon cross sections. The parameters of the s-channel interaction are fixed by the masses of K and K^* mesons, for which the size parameter is taken to be two possible values. When it is chosen as the same as baryons', the numerical results show that the masses of all the ud anti-s anti-s configurations are higher than the corresponding meson-meson thresholds. But when the size parameter for the K and K^* mesons is adjusted to be smaller than that for the baryons, the ud anti-s anti-s configuration with I=0 and J^P=1^+ is found to lie lower than the K^*K^* threshold, furthermore, this state has a very small KK^* component and the interaction matrix elements between this state and KK^* is comparatively small, thus its coupling to the KK^* channel will consequently be weak and it might be regarded as a possible tetraquark candidate.
description: 17 pages, 1 figure
Peter Kropotkin and His Influence on Czech Anarchism
Creators: name: Rovná, Lenka Anna
Publisher: name: Moving the Social
Year: 2014

description: In the Czech lands of the late 19th century and early 20th century, anarchism represented a marginal current on the fringe of the labour movement. The social groups inclining to anarchism were miners and weavers in North and East Bohemia as well as intellectuals in Prague. The anarchist movement in the Czech lands was mostly radical, not violent and mainly responding to the development of the Social Democratic Party, which was accused of suppressing individualism. While anarchists generally published a great num- ber of journals of high intellectual quality, there were no significant anarchist thinkers in the Czech lands. If in the 1880s the major role was played by anarchist Johann Most, in the 1890s and at the beginning of the 20th century this role belonged to Russian anarchist Peter Kropotkin. His teaching appealed to Czech anarchists mostly because of its moderate character and rejection of terror, and for his promotion of cooperation, individuality, ethics and social justice. Free individuals gathered in communes and the federations of communes formed the ideal society for Kropotkin. Kropotkin’s ideas are still alive in present anarchist and anti-globalisation movements.
description: Moving the Social, Vol 50 (2013): Essays on Social History and the History of Social Movements
The Impact of Arresting Gang Leaders on Organized Armed Violence in Drug Markets
Creators: name: Burke, Patrick John
Publisher: name: University of Illinois at Chicago
Year: 2024

description: In this dissertation, I argue that arresting the leaders of drug-selling gangs is a precise and impactful tactic for reducing gun violence in open-air drug markets. I construct a theory of leadership arrests in drug markets by building on rationalist mechanisms. To test my theory, I utilize two original datasets. Both were constructed using Freedom of Information Act (FOIA) responses from the Chicago Police Department, open-source data, and archival court documents. However, one of the datasets—covering January 2019 to May 2023—was constructed through direct field observations of drug markets on the Westside of Chicago. This is the first dataset that includes a systematic identification of (eighty) individual drug-selling spots within (twenty-three) drug markets. Statistical analysis shows that arresting gang leaders is associated with significant reductions in gun violence in drug markets.
 Two separate chapters are devoted to testing two of the most important assumptions in my theory of leadership removals. Chapter 3 tests the assumption that law enforcement allocates drug enforcement actions towards especially violent drug markets. To answer this question, I statistically analyzed a dataset of twenty-two Chicago police districts, with drug arrests as the dependent variable, and geo-located drug markets with above-average violence as the main explanatory variable. Chapter 4 tests the assumption that drug-selling gangs violently compete for drug market share as rational actors. I test this assumption by building a theory of competitive violence in drug markets, and statistically analyze a dataset with mass shootings in Chicago as the dependent variable and opioid overdose deaths—a proxy for drug demand—as the main explanatory variable. The empirical results of chapters 2 and 3 support the assumptions made in the theory of leadership removals.
On the number of topological types occurring in a parametrized family of arrangements
Creators: name: Basu, Saugata
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 52C45

description: Let ${\mathcal S}(\R)$ be an o-minimal structure over $\R$, $T \subset \R^{k_1+k_2+\ell}$ a closed definable set, and $$ \displaylines{π_1: \R^{k_1+k_2+\ell}\to \R^{k_1 + k_2}, π_2: \R^{k_1+k_2+\ell}\to \R^{\ell}, \ π_3: \R^{k_1 + k_2} \to \R^{k_2}} $$ the projection maps. For any collection ${\mathcal A} = \{A_1,...,A_n\}$ of subsets of $\R^{k_1+k_2}$, and $\z \in \R^{k_2}$, let $\A_\z$ denote the collection of subsets of $\R^{k_1}$, $\{A_{1,\z},..., A_{n,\z}\}$, where $A_{i,\z} = A_i \cap π_3^{-1}(\z), 1 \leq i \leq n$. We prove that there exists a constant $C = C(T) > 0,$ such that for any family ${\mathcal A} = \{A_1,...,A_n\}$ of definable sets, where each $A_i = π_1(T \cap π_2^{-1}(\y_i))$, for some $\y_i \in \R^{\ell}$, the number of distinct stable homotopy types of $\A_\z, \z \in \R^{k_2}$, is bounded by $ \displaystyle{C \cdot n^{(k_1+1)k_2},} $ while the number of distinct homotopy types is bounded by $ \displaystyle{C \cdot n^{(k_1+3)k_2}.} $ This generalizes to the general o-minimal setting, bounds of the same type proved in \cite{BV} for semi-algebraic and semi-Pfaffian families. One main technical tool used in the proof of the above results, is a topological comparison theorem which might be of independent interest in the study of arrangements.
description: 20 pages, 2 figures. Revised version with updated bibliography and corrected references
Open science and reproducibility
Creators: name: Mietchen, Daniel
Publisher: name: Zenodo
Year: 2024
Subjects: open science
reproducibility
mathematics
computer science

description: This repo hosts materials related to a workshop given on 26 September 2024 as part of the 11th Heidelberg Laureate Forum, where early-stage researchers from mathematics and computer science meet with recipients of major prizes in their fields (e.g. Fields Medal, Abel Prize, Turing Award).

 

Title:

Open science and reproducibility

 

Abstract: 

In this interactive “bring your own data”-workshop, we discuss modern mathematical research along its data life cycle: from the first conception of an idea to its publication and reuse. In particular, we look at the role of open science and collaboration in mathematics, the role of research data and how we organize, document, and publish. We then look at your very own mathematics, consider its reproducibility, and together derive lessons in best practice.
Entanglement in highly symmetric multipartite quantum states
Creators: name: Burchardt, Adam
name: Czartowski, Jakub
name: Życzkowski, Karol
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a construction of genuinely entangled multipartite quantum states based on the group theory. Analyzed states resemble the Dicke states, whereas the interactions occur only between specific subsystems related by the action of the selected group. The states constructed by this technique exhibit desired symmetry properties and form a natural resource for less-symmetric quantum informational tasks. We propose quantum circuits efficiently generating such states, which in general have smaller complexity than the circuits necessary to create fully symmetric entangled states.
description: 22 pages, 16 figures
Towards 3D Metric GPR Imaging Based on DNN Noise Removal and Dielectric Estimation
Creators: name: Feng, Jinglun
name: Yang, Liang
name: Xiao, Jizhong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Ground Penetrating Radar (GPR) is one of the most important non-destructive evaluation (NDE) devices to detect subsurface objects (i.e., rebars, utility pipes) and reveal the underground scene. The two biggest challenges in GPR-based inspection are the GPR data collection and subsurface target imaging. To address these challenges, we propose a robotic solution that automates the GPR data collection process with a free motion pattern. It facilitates the 3D metric GPR imaging by tagging the pose information with GPR measurement in real-time. We also introduce a deep neural network (DNN) based GPR data analysis method which includes a noise removal segmentation module to clear the noise in GPR raw data and a DielectricNet to estimate the dielectric value of subsurface media in each GPR B-scan data. We use both the field and synthetic data to verify the proposed method. Experimental results demonstrate that our proposed method can achieve better performance and faster processing speed in GPR data collection and 3D GPR imaging than other methods.
description: under review
A viscous-inviscid interaction procedure
Creators: name: Stropky, Dave
Publisher: name: University of British Columbia
Year: 2010

description: A new viscous-inviscid semi-inverse (VISI) interaction method has been developed for predicting the flow field arising from a combination of inviscid potential flow and viscous flow. The technique involves matching the bounding velocities for each region by iteratively solving for the displacement thickness, δ*(x). The formula used to update δ*(x) after each iteration is generated by linearly perturbing the governing equations. Application of the VISI procedure to predict the unseparated flow past a flat plate gives excellent results, producing numerical solutions essentially indistinguishable from the appropriate analytical solution in less than 0.5 seconds of CPU time on an Amdahl 5850 computer. Application of the technique to external flow over a backward facing step (BFS) indicates that the region of strong interaction between the viscous and inviscid flows is much larger than reported for internal flow. Calculated reattachment lengths, LR, are clearly influenced by the thickness of the boundary layer upstream of the step, thicker boundary layers producing longer reattachment lengths. Good accuracy is achieved for a relatively coarse distribution of control points, and rapid convergence (< 2 seconds on the Amdahl 5850) usually occurs. Finite-difference predictions using an elliptic code (TEACH-T), modified at the outer boundary to simulate external flow, have also been made for the BFS, largely as a basis of comparison for the VISI results. Comparison of results for the two models (VISI and TEACH) gives similar trends in LR as a function of Rh and x₈, (a measure of the displacement thickness at the step). The values of LR obtained with the VISI method, however, are 15-80% longer than those from TEACH. Direct comparison with experiments is difficult because the experimental data does not clearly identify the effects of x₈, in the resulting values of LR. Trends appear to be the same for all computed and observed cases however. Disagreement between the VISI and TEACH results is thought to be due to a combination of neglecting velocities in the recirculation region in the VISI model, and numerical error and inaccurate boundary conditions in the TEACH code.
Student Interview Plan for Felicia Mata-Greve (Example)
Creators: name: Fish, Jillian
Publisher: name: figshare
Year: 2021
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: ***NOT FOR REDISTRIBUTING OR ADAPTING***

This is an example of an interview plan created by students for Felicia Mata-Greve.
Generation after Generation
Creators: name: Miccoli, Dario
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

This essay focuses on a very interesting Israeli novelist and poet of mizrahi origin, ’Almog Behar (b. 1978), clarifying the most salient characteristics of his works – especially the novel Tchahlah ve-Hezqel – and the main issues there discussed. In order to better understand the works of Behar, I discuss them vis-à-vis the first three generations of mizrahi literature, from the «transit camp» novels of the 1950s to the new wave of the 1980s, up to today. By focusing on Behar, I intend to explain how it is nowadays possible to  rewrite Israeli culture and society basing upon one’s family past and memories and, in so doing, open new scenarios for Israeli literature, as well as for mizrahi identity and for Arab-Jewish relations.

description: Annali di Ca’ Foscari. Serie orientale
ผลกระทบของระบบการบันทึกบัญชีที่ดีที่มีต่อคุณภาพรายงานทางการเงินของเทศบาลในเขตภาคตะวันออกเฉียงเหนือในประเทศไทย
Creators: name: จันทร์นิภา ประหยัด
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: ระบบการบันทึกบัญชีที่ดี, คุณภาพรายงานทางการเงิน, ผู้บริหารฝ่ายบัญชีของเทศบาล

description: 1, 34, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
ความสัมพันธ์ระหว่างความสามารถในการบริการกับประสิทธิภาพการทำงานของผู้บริหารแผนกต้อนรับส่วนหน้าธุรกิจโรงแรมในภาตะวันออกเฉียงเหนือ
Creators: name: ชิดชัย อนุฤทธิ์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: ความสามารถในการบริการ, ประสิทธิภาพการทำงาน

description: 1, 34, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Additional file 3 of Artificial intelligence for good health: a scoping review of the ethics literature
Creators: name: Murphy, Kathleen
name: Ruggiero, Erica Di
name: Upshur, Ross
name: Willison, Donald J.
name: Malhotra, Neha
name: Cai, Jia Ce
name: Nakul Malhotra
name: Vincci Lui
name: Gibson, Jennifer
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biotechnology
Cancer
Science Policy
Computational Biology

description: Additional file 3. Data Charting Form Template.
อิทธิพลของความสูงในการตัดที่มีต่อผลผลิตและคุณค่าทางโภชนะของหญ้ากินนีสีม่วงภายใต้การให้นํ้าชลประทาน
Creators: name: วิทยา สุมามาลย์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: การให้น้ำชลประทาน, ความสูงในการตัด, คุณค่าทางโภชนะ, ผลผลิต, หญ้ากินนีสีม่วง

description: 3, 33, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
ผลของการบำบัดเย็นยิ่งยวดต่อการเปลี่ยนแปลงของความแข็งขณะทำการอบชุบใต้อุณหภูมิวิกฤตของเหล็กหล่อโครเมียม 16 % - โมลิบดินัม 2 % โดยนํ้าหนักที่เติมวาเนเดียม
Creators: name: พงษ์อนันต์ โสแก้ว
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: เหล็กหล่อ, 16wt%Cr-2wt%Mo, ความแข็ง

description: 1, 33, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Additional file 4 of Artificial intelligence for good health: a scoping review of the ethics literature
Creators: name: Murphy, Kathleen
name: Ruggiero, Erica Di
name: Upshur, Ross
name: Willison, Donald J.
name: Malhotra, Neha
name: Cai, Jia Ce
name: Nakul Malhotra
name: Vincci Lui
name: Gibson, Jennifer
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biotechnology
Cancer
Science Policy
Computational Biology

description: Additional file 4. Bibliography of the 103 records included in analysis.
Generalized Twistor Transform And Dualities, With A New Description of Particles With Spin, Beyond Free and Massless
Creators: name: Bars, Itzhak
name: Orcal, Bora
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A generalized twistor transform for spinning particles in 3+1 dimensions is constructed that beautifully unifies many types of spinning systems by mapping them to the same twistor, thus predicting an infinite set of duality relations among spinning systems with different Hamiltonians. Usual 1T-physics is not equipped to explain the duality relationships and unification between these systems. We use 2T-physics in 4+2 dimensions to uncover new properties of twistors, and expect that our approach will prove to be useful for practical applications as well as for a deeper understanding of fundamental physics. Unexpected structures for a new description of spinning particles emerge. A unifying symmetry SU(2,3) that includes conformal symmetry SU(2,2)=SO(4,2) in the massless case, turns out to be a fundamental property underlying the dualities of a large set of spinning systems, including those that occur in high spin theories. This may lead to new forms of string theory backgrounds as well as to new methods for studying various corners of M theory. In this paper we present the main concepts, and in a companion paper we give other details.
description: 33 pages
Remnant evolution after a carbon-oxygen white dwarf merger
Creators: name: Yoon, Sung-Chul
name: Podsiadlowski, Philipp
name: Rosswog, Stephan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We systematically explore the evolution of the merger of two carbon-oxygen (CO) white dwarfs. The dynamical evolution of a 0.9 Msun + 0.6 Msun CO white dwarf merger is followed by a three-dimensional SPH simulation. We use an elaborate prescription in which artificial viscosity is essentially absent, unless a shock is detected, and a much larger number of SPH particles than earlier calculations. Based on this simulation, we suggest that the central region of the merger remnant can, once it has reached quasi-static equilibrium, be approximated as a differentially rotating CO star, which consists of a slowly rotating cold core and a rapidly rotating hot envelope surrounded by a centrifugally supported disc. We construct a model of the CO remnant that mimics the results of the SPH simulation using a one-dimensional hydrodynamic stellar evolution code and then follow its secular evolution. The stellar evolution models indicate that the growth of the cold core is controlled by neutrino cooling at the interface between the core and the hot envelope, and that carbon ignition in the envelope can be avoided despite high effective accretion rates. This result suggests that the assumption of forced accretion of cold matter that was adopted in previous studies of the evolution of double CO white dwarf merger remnants may not be appropriate. Our results imply that at least some products of double CO white dwarfs merger may be considered good candidates for the progenitors of Type Ia supernovae. In this case, the characteristic time delay between the initial dynamical merger and the eventual explosion would be ~10^5 yr. (Abridged).
description: 15 pages, 15 figures, 3 tables, submitted to MNRAS (Low resolution version; a high resolution version can be found at: http://www.astro.uva.nl/~scyoon/papers/wdmerger.pdf)
วิถีชีวิตพอเพียงอย่างยั่งยืนของเกษตรกรด้วยการจัดการฟื้นฟูป่าบนที่นาตามภูมิปัญญาใน เขตกึ่งแห้งแล้ง กรณีศึกษา: นายเข็ม เดชศรี บ้านโนนศิลา ตำบลแวงน้อย อำเภอแวงน้อย จังหวัดขอนแก่น
Creators: name: ประสิทธิ์ ประคองศรี
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: วิถีชีวิตพอเพียง, การจัดการฟื้นฟูป่า, ภูมิปัญญา

description: 1, 33, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Technology Transfer and Technological Capability: A Case Study in Manufacturing Process in Thai Pharmaceutical Industry
Creators: name: Onoomar Toyama
name: Somlak Kongmuamg
name: Manoon Toyama
Publisher: name: Silpakorn University Research and Development Institute
Year: 2014
Subjects: Thai pharmaceutical industry, Technology transfer, Technological capability, Manufacturing process, Pharmaceutical production

description: 2, 8, Silpakorn University Science and Technology
Dynamical control of matter-wave tunneling in periodic potentials
Creators: name: Lignier, H.
name: Sias, C.
name: Ciampini, D.
name: Singh, Y.
name: Zenesini, A.
name: Morsch, O.
name: Arimondo, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report on measurements of dynamical suppression of inter-well tunneling of a Bose-Einstein condensate (BEC) in a strongly driven optical lattice. The strong driving is a sinusoidal shaking of the lattice corresponding to a time-varying linear potential, and the tunneling is measured by letting the BEC freely expand in the lattice. The measured tunneling rate is reduced and, for certain values of the shaking parameter, completely suppressed. Our results are in excellent agreement with theoretical predictions. Furthermore, we have verified that in general the strong shaking does not destroy the phase coherence of the BEC, opening up the possibility of realizing quantum phase transitions by using the shaking strength as the control parameter.
description: 5 pages, 3 figures
Parametrized Post-Newtonian Expansion of Chern-Simons Gravity
Creators: name: Alexander, Stephon
name: Yunes, Nicolas
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the weak-field, post-Newtonian expansion to the solution of the field equations in Chern-Simons gravity with a perfect fluid source. In particular, we study the mapping of this solution to the parameterized post-Newtonian formalism to 1 PN order in the metric. We find that the PPN parameters of Chern-Simons gravity are identical to those of general relativity, with the exception of the inclusion of a new term that is proportional to the Chern-Simons coupling parameter and the curl of the PPN vector potentials. We also find that the new term is naturally enhanced by the non-linearity of spacetime and we provide a physical interpretation for it. By mapping this correction to the gravito-electro-magnetic framework, we study the corrections that this new term introduces to the acceleration of point particles and the frame-dragging effect in gyroscopic precession. We find that the Chern-Simons correction to these classical predictions could be used by current and future experiments to place bounds on intrinsic parameters of Chern-Simons gravity and, thus, string theory.
description: 14 pagges
Search for Direc Magnetic Monopoles in e+e- Collisions with the OPAL Detector at LEP2
Creators: name: The OPAL Collaboration
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This letter describes a direct search for pair produced magnetic monopoles in e+e- collisions. The analysis is based on 62.7 pb^-1 of data collected with the OPAL detector at an average centre-of-mass energy of sqrt(s)= 206.3GeV. The monopole signal was assumed to be characterized by two back-to-back particles with an anomalously high ionization energy loss de/dx in the tracking chambers. No evidence for production of monopoles was observed. Upper limits were obtained on the magnetic monopole pair-production cross-section (sigma) in the mass range 45 GeV/c^2
description: 13 pages, 3 figures, Submitted to Phys. Letts. B
Scaling of Resistance and Electron Mean Free Path of Single-Walled Carbon Nanotubes
Creators: name: Purewal, Meninder
name: Hong, Byung Hee
name: Ravi, Anirudhh
name: Chandra, Bhupesh
name: Hone, James
name: Kim, Philip
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an experimental investigation on the scaling of resistance in individual single walled carbon nanotube devices with channel lengths that vary four orders of magnitude on the same sample. The electron mean free path is obtained from the linear scaling of resistance with length at various temperatures. The low temperature mean free path is determined by impurity scattering, while at high temperature the mean free path decreases with increasing temperature, indicating that it is limited by electron-phonon scattering. An unusually long mean free path at room temperature has been experimentally confirmed. Exponentially increasing resistance with length at extremely long length scales suggests anomalous localization effects.
description: 4 pages 4 figures, to appear in Phys. Rev. Lett
Casimir-Polder intermolecular forces in minimal length theories
Creators: name: Panella, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Generalized uncertainty relations are known to provide a minimal length $\hbar\sqrtβ$. The effect of such minimal length in the Casimir-Polder interactions between neutral atoms (molecules) is studied. The first order correction term in the minimal uncertainty parameter is derived and found to describe an attractive potential scaling as $r^{-9}$ as opposed to the well known $r^{-7}$ long range retarded potential.
description: 1 Figure. Version published by Physical Review D. Few references added, typos corrected
Differential Recursion and Differentially Algebraic Functions
Creators: name: Kawamura, Akitoshi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences
subject: F.1.1

description: Moore introduced a class of real-valued "recursive" functions by analogy with Kleene's formulation of the standard recursive functions. While his concise definition inspired a new line of research on analog computation, it contains some technical inaccuracies. Focusing on his "primitive recursive" functions, we pin down what is problematic and discuss possible attempts to remove the ambiguity regarding the behavior of the differential recursion operator on partial functions. It turns out that in any case the purported relation to differentially algebraic functions, and hence to Shannon's model of analog computation, fails.
description: 14 pages, 3 figures
On the onset of runaway stellar collisions in dense star clusters I. Dynamics of the first collision
Creators: name: Gaburov, E.
name: Gualandris, A.
name: Zwart, S. Portegies
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the circumstances under which first collisions occur in young and dense star clusters. The initial conditions for our direct $N$-body simulations are chosen such that the clusters experience core collapse within a few million years, before the most massive stars have left the main-sequence. It turns out that the first collision is typically driven by the most massive stars in the cluster. Upon arrival in the cluster core, by dynamical friction, massive stars tend to form binaries. The enhanced cross section of the binary compared to a single star causes other stars to engage the binary. A collision between one of the binary components and the incoming third star is then mediated by the encounters between the binary and other cluster members. Due to the geometry of the binary-single star engagement the relative velocity at the moment of impact is substantially different than in a two-body encounter. This may have profound consequences for the further evolution of the collision product.
description: 11 pages, 10 figures, accepted to MNRAS
Präsentation: Von Nutzer:innen zu Gestalter:innen: Wie Hochschulen auf die KI-Zukunft vorbereiten können
Creators: name: Brünner, Benedikt
Publisher: name: Graz University of Technology
Year: 2025

description: Präsentation zur Keynote am 10.4.2025 für den Talk des FNMA Frühjahrsmagazins 01/2025 zum Thema “KI-Zugänge für Hochschulen”
Shadows and rings of the Kehagias-Sfetsos black hole surrounded by thin disk accretion
Creators: name: Li, Guo-Ping
name: He, Ke-Jian
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, under the illumination of thin disk accretion, we have employed the ray-tracing method to carefully investigate shadows and rings of the Kehagias-Sfetsos(KS) black hole in deformed Hořava-Lifshitz(HL) gravity. The results show that the event horizon $r_+$, the radius $r_p$ and impact parameter $b_{p}$ of photon sphere are all decreased with the increase of the HL parameter $ω$, but the effective potential increases. And, it also turns out that the trajectories of light rays emitted from the north pole direction are defined as the direct emission, lensing ring and photon ring of KS black hole, on the basis of orbits $n = ϕ/2π$. As black hole surrounded by thin disk accretion, we show that the corresponding transfer functions have their values increased with the parameter $ω$. More importantly, we also find that the direct emissions always dominate the total observed intensity, while lensing rings as a thin ring make a very small contribution and photon ring as a extremely narrow ring make a negligible contribution, for all three toy-model functions. In view of this, the results finally imply that shadows and rings as the observational appearance of KS black hole exhibit some obvious interesting features, which might be regarded as an effective way to distinguish black holes in HL gravity from the Schwarzschild black hole.
description: 17 pages, 28 figures, minor revisions, references added
Signatures of Recent Cosmic-Ray Acceleration in the High-Latitude $γ$-Ray Sky
Creators: name: Jóhannesson, Guðlaugur
name: Porter, Troy A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Cosmic-ray (CR) sources temporarily enhance the relativistic particle density in their vicinity over the background distribution accumulated from the Galaxy-wide past injection activity and propagation. If individual sources are close enough to the solar system, their localised enhancements may present as features in the measured spectra of the CRs and in the associated secondary electromagnetic emissions. Large scale loop like structures visible in the radio sky are possible signatures of such nearby CR sources. If so, these loops may also have counterparts in the high-latitude $γ$-ray sky. Using $\sim$10 years of data from the Fermi Large Area Telescope, applying Bayesian analysis including Gaussian Processes, we search for extended enhanced emission associated with putative nearby CR sources in the energy range from 1 GeV to 1 TeV for the sky region $|b| > 30^\circ$. We carefully control the systematic uncertainty due to imperfect knowledge of the interstellar gas distribution. Radio Loop~IV is identified for the first time as a $γ$-ray emitter and we also find significant emission from Loop~I. Strong evidence is found for asymmetric features about the Galactic $l = 0^\circ$ meridian that may be associated with parts of the so-called "Fermi Bubbles", and some evidence is also found for $γ$-ray emission from other radio loops. Implications for the CRs producing the features and possible locations of the sources of the emissions are discussed.
description: Accepted for publication by ApJ