cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analysis and Stabilization of AC Line Synchronized Timing System for SuperKEKB
Creators: name: Wang, Di
name: Furukawa, Kazuro
name: Satoh, Masanori
name: Kaji, Hiroshi
name: Sugimura, Hitoshi
name: Enomoto, Yoshinori
name: Miyahara, Fusashi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A timing system provides high-precision signals to allow the controls over a variety of hardware and software components in the accelerator complex. This is guaranteed by the radio frequency (RF) and trigger signal synchronization for subsystems such as klystrons, pulsed magnets, and beam monitors. The main trigger signal should be distributed throughout the facility and repeated at the beam repetition rate. This trigger signal is usually generated by the same phase of an AC power line to follow the source of the fluctuation of an electrical grid and reduce the unwanted variation of the beam quality. To fulfill the needs of the multi-accelerator facility at KEK, apart from the normal trigger synchronization and bucket selection injection control, a beam operation scheme called the pulse-to-pulse modulation is utilized; hence, the complexity of the timing system increases. Uncertainty in the system and a trigger signal delivery error caused by a drastic AC power line drift are observed. Further, the effort to establish a reliable timing system at KEK and several solutions to improve the system robustness are presented.
Quadratic-stretch elasticity
Creators: name: Vitral, E.
name: Hanna, J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A nonlinear small-strain elastic theory is constructed from a systematic expansion in Biot strains, truncated at quadratic order. The primary motivation is the desire for a clean separation between stretching and bending energies for shells, which appears to arise only from reduction of a bulk energy of this type. An approximation of isotropic invariants, bypassing the solution of a quartic equation or computation of tensor square roots, allows stretches, rotations, stresses, and balance laws to be written in terms of derivatives of position. Two-field formulations are also presented. Extensions to anisotropic theories are briefly discussed.
description: Minor edits
Direct observation of terahertz frequency comb generationin difference-frequency quantum cascade lasers
Creators: name: Consolino, Luigi
name: Nafa, Malik
name: De Regis, Michele
name: Cappelli, Francesco
name: Bartalini, Saverio
name: Ito, Akio
name: Hitaka, Masahiro
name: Dougakiuchi, Tatsuo
name: Edamura, Tadataka
name: De Natale, Paolo
name: Fujita, Kazuue
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Terahertz quantum cascade laser sources based on intra-cavity difference frequency generation from mid-IR devices are an important asset for applications in rotational molecular spectroscopy and sensing, beingthe only electrically pumped device able to operate in the 0.6-6 THz range without the need of bulky andexpensive liquid helium cooling. Here we present comb operation obtained by intra-cavity mixing of adistributed feedback laser at λ = 6.5 μm and a Fabry-Pérot device at around λ = 6.9 μm. The resultingultra-broadband THz emission extends from 1.8 to 3.3 THz, with a total output power of 8 μW at 78K.The THz emission has been characterized by multi-heterodyne detection with a primary frequencystandard referenced THz comb, obtained by optical rectification of near infrared pulses. The down-converted beatnotes, simultaneously acquired, confirm an equally spaced THz emission down to 1 MHzaccuracy. In the next future this setup can be used for Fourier transform based evaluation of the phaserelation among the emitted THz modes, paving the way to room-temperature, compact and field-deployable metrological grade THz frequency combs.
The design of steel structures : a second-order approach
Creators: name: Matson, Darryl Douglas
Publisher: name: University of British Columbia
Year: 2010

description: The wide spread use of limit states design procedures in both the Canadian and American steel design codes has created a need for a better understanding of how structures behave. Current design practice, however, allows and often encourages engineers to use an approximate linear analysis to determine the member forces in a structure. This is then followed by an even more approximate amplification of forces through the use of several design equations. It is believed that this practice is no longer acceptible as more accurate second-order computer programs have become a very practical alternative. With this as motivation, this thesis will provide a comparison between a second-order computer program available at the University of British Columbia called ULA (Ultimate Load Analysis) and the Canadian and American building code designs, CAN3-S16.1-M84 and LRFD 1986 respectively. It was felt that ULA should be verified, even though the theory it is based on is well established. Thus, ULA was used to generate a load versus L/r curve for a pin ended column (with the parameters modified slightly to allow direct comparison with the curves available in the codes). ULA was then used to predict load-deflection curves for two existing test frames. The resulting curves compared well with the test data. To ensure simplicity, the building codes make several approximations in the derivation of their design equations. This results in the equations being applicable to a very narrow range of structures. Specifically, the equations apply to rigidly connected frames in which all of the columns reach their critical buckling load simmultaniously. Consequently, the results from ULA were compared to the codes for structures of this type. It was found that the codes were conservative for these structures in relation to the results from ULA, yet the amount of conservatism varied greatly between structures. That is, the codes are not consistant in how conservative they are. Results from ULA were then compared to the codes for structures that do not satisfy all of the code limitations. Alhough using the codes to design structures beyond the limit of applicability is not a recommended practice, engineers do use the codes to design all types of structures, with little appreciation for the applicability limits. Consequently, it was deemed appropriate to extend this study to such structures. Though only a few were investigated, it was found that the codes were unreliable, being highly conservative, very accurate, or in one case highly unconservative when compared to the results from ULA.
Black hole masses and enrichment of z ~ 6 SDSS quasars
Creators: name: Kurk, Jaron D.
name: Walter, Fabian
name: Fan, Xiaohui
name: Jiang, Linhua
name: Riechers, Dominik A.
name: Rix, Hans-Walter
name: Pentericci, Laura
name: Strauss, Michael A.
name: Carilli, Chris
name: Wagner, Stefan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present sensitive near-infrared spectroscopic observations for a sample of five z ~ 6 quasars. These are amongst the most distant, currently known quasars in the universe. The spectra have been obtained using ISAAC at the VLT and include the CIV, MgII and FeII lines. We measure the FeII/MgII line ratio, as an observational proxy for the Fe/alpha element ratio. We derive a ratio of 2.7+/-0.8 for our sample, which is similar to that found for lower redshift quasars, i.e., we provide additional evidence for the lack of evolution in the FeII/MgII line ratio of quasars up to the highest redshifts. This result demonstrates that the sample quasars must have undergone a major episode of iron enrichment in less than one Gyr and star formation must have commenced at z > 8. The linewidths of the MgII and CIV lines give two estimates for the black hole masses. A third estimate is given by assuming that the quasars emit at their Eddington luminosity. The derived masses using these three methods agree well, implying that the quasars are not likely to be strongly lensed. We derive central black hole masses of 0.3-5.2 10^9 solar masses. We use the difference between the redshift of MgII (a proxy for the systemic redshift of the quasar) and the onset of the Gunn Peterson trough to derive the extent of the ionized Stromgren spheres around our target quasars. The derived physical radii are about five Mpc. Using a simple ionization model, the emission of the central quasars would need of order 10^6-10^8 year to create these cavities in a surrounding intergalactic medium with a neutral fraction between 0.1 and 1.0. As the e-folding time scale for the central accreting black hole is on the order of a few times 10^7 year, it can grow by one e-folding or less within this time span.
description: Accepted by ApJ, 15 pages, 8 figures
การบริหารจัดการเพื่อสร้างการมีส่วนร่วมในการดำเนินงาน    หอกระจายข่าวสารของสมาชิกในชุมชน : กรณีชุมชนในเขตองค์การบริหารส่วนท้องถิ่นตำบลเหนือเมือง อำเภอเมือง จังหวัดร้อยเอ็ด
Creators: name: พวงชมพู ไชยอาลา แสงรุ่งเรืองโรจน์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: หอกระจายข่าวสาร, สื่อชุมชน, การมีส่วนร่วม, การบริหารจัดการเพื่อสร้างการมีส่วนร่วม

description: 2, 32, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Past extendibility and initial singularity in Friedmann-Lemaître-Robertson-Walker and Bianchi I spacetimes
Creators: name: Nomura, Kimihiro
name: Yoshida, Daisuke
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: We study past-directed extendibility of Friedmann-Lemaître-Robertson-Walker (FLRW) and Bianchi type I spacetimes with a scale factor vanishing in the past. We give criteria for determining whether a boundary for past-directed incomplete geodesics is a parallelly propagated curvature singularity, which cannot necessarily be read off from scalar curvature invariants. It is clarified that, for incomplete FLRW spacetime to avoid the singularity, the spacetime necessarily reduces to the Milne universe or flat de Sitter universe toward the boundary. For incomplete Bianchi type I spacetime to be free of singularity, it is necessary that the spacetime asymptotically fits into the product of the extendible isotropic geometry (Milne or flat de Sitter) and flat space, or, anisotropic spacetime with specific power law scale factors. Furthermore, we investigate in detail the time-dependence of the scale factor compatible with the extendibility in both spacetimes beyond the leading order.
description: 33 pages, 3 figures
MOESM1 of Role of community-based active case finding in screening tuberculosis in Yunnan province of China
Creators: name: Chen, Jin-Ou
name: Qiu, Yu-Bing
name: Rueda, Zulma
name: Hou, Jing-Long
name: Lu, Kun-Yun
name: Chen, Liu-Ping
name: Su, Wei-Wei
name: Huang, Li
name: Zhao, Fei
name: Li, Tao
name: Xu, Lin
Publisher: name: figshare
Year: 2019
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1. Multilingual abstracts in the five official working languages of the United Nations.
Gemini Near-infrared Spectroscopy of Luminous z~6 Quasars: Chemical Abundances, Black Hole Masses, and MgII Absorption
Creators: name: Jiang, Linhua
name: Fan, Xiaohui
name: Vestergaard, Marianne
name: Kurk, Jaron D.
name: Walter, Fabian
name: Kelly, Brandon C.
name: Strauss, Michael A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Gemini near-infrared spectroscopic observations of six luminous quasars at z=5.8$\sim$6.3. Five of them were observed using Gemini-South/GNIRS, which provides a simultaneous wavelength coverage of 0.9--2.5 $μ$m in cross dispersion mode. The other source was observed in K band with Gemini-North/NIRI. We calculate line strengths for all detected emission lines and use their ratios to estimate gas metallicity in the broad-line regions of the quasars. The metallicity is found to be supersolar with a typical value of $\sim$4 Z_{\sun}, and a comparison with low-redshift observations shows no strong evolution in metallicity up to z$\sim$6. The FeII/MgII ratio of the quasars is 4.9+/-1.4, consistent with low-redshift measurements. We estimate central BH masses of 10^9 to 10^{10} M_{\sun} and Eddington luminosity ratios of order unity. We identify two MgII $λλ$2796,2803 absorbers with rest equivalent width W_0^{\lambda2796}>1 Åat 2.21.5 Åat z>3 in the spectra, with the two most distant absorbers at z=4.8668 and 4.8823, respectively. The redshift number densities (dN/dz) of MgII absorbers with W_0^{\lambda2796}>1.5 Åare consistent with no cosmic evolution up to z>4.
description: 33 pages (including 7 figures and 6 tables), AJ in press
กรณีศึกษาเชิงวิพากษ์วิจารณ์:  ครูวิทยาศาสตร์ไทยระดับประถมศึกษาพัฒนาความเข้าใจและการปฏิบัติการสอนด้านการกำหนดเป้าหมายการจัดการเรียนรู้วิทยาศาสตร์อย่างไรเมื่อเข้าร่วมในรูปแบบการร่วมมือกันในการสอน
Creators: name: ศิริวรรณ ฉัตรมณีรุ่งเจริญ
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: ความรู้เนื้อหาผนวกวิธีสอน, รูปแบบการร่วมมือกันในการสอน, การจัดการเรียนรู้ตามแนวคอนสตรัคติวิซึม, การเรียนรู้แบบสืบเสาะ, การพัฒนาวิชาชีพครู

description: 2, 32, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
การประเมินการบริหารโรงเรียนขั้นพื้นฐานตามแนวชายแดนไทย-กัมพูชา อีสานใต้
Creators: name: สมควร โมทะจิตร
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: การประเมิน, การบริหาร, โรงเรียนขั้นพื้นฐานตามแนวชายแดนไทย - กัมพูชา อีสานใต้

description: 2, 32, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
The electronic structures, the equilibrium geometries and finite temperature properties of Na_n (n=39-55)
Creators: name: Zorriasatein, Shahab
name: Lee, Mal-Soon
name: Kanhere, D. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Density-functional theory has been applied to investigate systematics of sodium clusters Na_n in the size range of n= 39-55. A clear evolutionary trend in the growth of their ground-state geometries emerges. The clusters at the beginning of the series (n=39-43) are symmetric and have partial icosahedral (two-shell) structure. The growth then goes through a series of disordered clusters (n=44-52) where the icosahedral core is lost. However, for n>52 a three shell icosahedral structure emerges. This change in the nature of the geometry is abrupt. In addition, density-functional molecular dynamics has been used to calculate the specific heat curves for the representative sizes n= 43, 45, 48 and 52. These results along with already available thermodynamic calculations for n= 40, 50, and 55 enable us to carry out a detailed comparison of the heat capacity curves with their respective geometries for the entire series. Our results clearly bring out strong correlation between the evolution of the geometries and the nature of the shape of the heat capacities. The results also firmly establish the size-sensitive nature of the heat capacities in sodium clusters.
description: This paper contains of 8 pages and 13 figures
Additional file 1 of Prospective association of dietary soy and fibre intake with puberty timing: a cohort study among Chinese children
Creators: name: Xiong, Jingyuan
name: Xu, Yujie
name: Liu, Xueting
name: Wang, Xiaoyu
name: Shan, Shufang
name: Crabbe, M. James C.
name: Zhao, Li
name: Fang, He
name: Cheng, Guo
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Mental Health

description: Additional file 1: Figure S1. Flowchart for the study sample. Figure S2. Shape of the associations between total soy intakes and fibre intakes in childhood with puberty timing. In the analyses, 2152 girls and 2629 boys were included. B2, Tanner stage 2 for breast development; G2, the initiation of gonadal growth.
Open Science and the Data Stewardship Programme at Delft University of Technology
Creators: name: Plomp, Esther
name: Teperek, Marta
name: Turkyilmaz-van der Velden, Yasemin
name: Versteeg, Anke
name: Heijmans, Han
Publisher: name: Zenodo
Year: 2019

description: The principles of Open Science allow for rapid dissemination of knowledge, stimulate collaboration, and improve the reproducibility and quality of research. The transition to Open Science is an endeavour in which researchers require assistance.

Delft University of Technology (TU Delft) in the Netherlands offers support in the form of policies and guidelines which facilitate the transition to Open Science. The Strategic Framework 2018-2024 of the TU Delft, entitled “Impact for a better society”, lists “openness” as one of the four major guiding principles. TU Delft has an Open Access Policy in place since 2016 and a Research Data Policy Framework since 2018. The TU Delft Library collaborates with the faculties of the university, IT support, as well as the valorisation and legal team to support researchers that have to adhere to these policies.

Good Research Data Management (RDM) practises are a prerequisite for Open Science. By managing research data according to the FAIR (Findable, Accessible, Interoperable and Re-usable) principles, the research process will become more transparent, efficient, and reproducible. To improve and support the RDM practises of researchers at TU Delft the Data Stewardship programme started in 2017. The Data Stewardship programme is centrally coordinated by the TU Delft Library and addresses discipline specific needs by embedding a Data Steward within each faculty of the university. The Data Steward is a ‘one-stop-shop’ for researchers, able to answer questions regarding RDM and provide relevant high-quality support, or direct researchers to legal, ICT and IP experts. Data Stewards collaborate with Data Champions, disciplinary specific experts on RDM. The Data Stewardship programme aims to achieve a bottom-up approach required for the desired cultural change.

Researchers are also supported by the TU Delft Library which provides Open Science guides and workshops/courses, as well as an Open Access fund to pay for the costs of publications in journals registered in the Directory of Open Access Journals (DOAJ). Alternatively, researchers can make use of the TU Delft Open publishing platform, which publishes research Open Access. TU Delft also hosts an Open Access Data Archive, ‘4TU.ResearchData’ and is a founding member of DataCite. In 2018 TU Delft launched a MOOC called ‘Open Science: Sharing Your Research with the World’. The Data Stewards inform researchers about these Open Science developments and encourage the use of the facilities that TU Delft offers.

The Data Stewardship programme and Open Science facilities at the TU Delft are used as a case study to illustrate the challenges and opportunities that libraries face in the transition to Open Science at research institutions.
ทัศนคติของประชาชนในกรุงเทพมหานครต่อเนื้อหาภาพยนตร์ที่มีเรื่องราวเกี่ยวกับเพศในบริบทของวัฒนธรรมไทย
Creators: name: จุฑาภรณ์ อุ้ยสว่าง
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: ความคิดเห็น, เรื่องเพศ, วัฒนธรรมไทย, ภาพยนตร์

description: 3, 32, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Emergent symmetries and slow quantum dynamics in a Rydberg-atom chain with confinement
Creators: name: Chen, I-Chi
name: Iadecola, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Rydberg atoms in optical tweezer arrays provide a playground for nonequilibrium quantum many-body physics. The PXP model describes the dynamics of such systems in the strongly interacting Rydberg blockade regime and notably exhibits weakly nonergodic dynamics due to quantum many-body scars. Here, we study the PXP model in a strong staggered external field, which has been proposed to manifest quasiparticle confinement in light of a mapping to a lattice gauge theory. We characterize this confining regime using both numerical exact diagonalization and perturbation theory around the strong-field limit. In addition to the expected emergent symmetry generated by the staggered field, we find a second emergent symmetry that is special to the PXP model. The interplay between these emergent symmetries and the Rydberg blockade constraint dramatically slows down the system's dynamics beyond naive expectations. We devise a nested Schrieffer-Wolff perturbation theory to properly account for the new emergent symmetry and show that this treatment is essential to understand the numerically observed relaxation time scales. We also discuss connections to Hilbert space fragmentation and trace the origin of the new emergent symmetry to a "nearly-$SU(2)$" algebra discovered in the context of many-body scarring.
description: 13 pages, 9 figures
Multipoint correlation functions in Liouville field theory and minimal Liouville gravity
Creators: name: Fateev, V. A.
name: Litvinov, A. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study n+3-point correlation functions of exponential fields in Liouville field theory with n degenerate and 3 arbitrary fields. An analytical expression for these correlation functions is derived in terms of Coulomb integrals. The application of these results to the minimal Liouville gravity is considered.
description: Contribution to the proceedings of the International Workshop on Classical and Quantum Integrable Systems, Dubna, Russia, January 22-25, 2007, 18 pages
Η μελέτη του αστικού χώρου με μεθοδολογικά εργαλεία των φυσικών επιστημών
Creators: name: Γιουζέπας, Δημήτριος Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Αστικός Χώρος
Επιστήμη
Κοσμοείδωλα
Urban Space
Science
Worldviews

description: Σύμφωνα με τον Thomas Khun, η εξέλιξη των επιστημονικών ιδεών δεν είναι γραμμική αλλά με ασυνέχειες και ριζικές ρίξεις που προκαλούν οι επονομαζόμενες επιστημονικές επαναστάσεις. Η σύγχρονη επιστήμη καθορίστηκε από τρεις σημαντικές επιστημονικές επαναστάσεις. Τη Νευτώνεια, την επιστημονική επανάσταση που επέφερε η σχεδόν ταυτόχρονη διατύπωση της θεωρίας της σχετικότητας και η εξέλιξη της κβαντομηχανικής, και πιο πρόσφατα η επιστήμη της μη γραμμικής δυναμικής. Κάθε επιστημονική επανάσταση συνοδεύτηκε από ένα σύνολο ιδεών και πεποιθήσεων που επηρέασαν πολλά επιστημονικά και γνωστικά πεδία. Στόχο της διατριβής αποτελεί η ανάδειξη του τρόπου με τον οποίο οι εξελίξεις των φυσικών επιστημών επηρέασαν τον τρόπο που μελετάται και παράγεται ο αστικός χώρος. Για το λόγω αυτό γίνεται η αναζήτηση των μεθοδολογικών εργαλείων εκείνων που προκύπτουν από το πεδίο των φυσικών επιστημών και μπορούν να επιστρατευτούν για τη μελέτη του αστικού χώρου. Στην προσπάθεια να καθοριστεί το γενικό πλαίσιο ιδεών που συνιστούν το εκάστοτε κοσμοείδωλο, κρίνεται επίσης σκόπιμη η διερεύνηση της επίδρασης των φυσικών επιστημών και σε άλλα γνωστικά πεδία, όπως η φιλοσοφία ή οι τέχνες, που συχνά αποτελούν τα ενδιάμεσα στάδια της εγκαθίδρυσης νέων ιδεών στη μελέτη και το σχεδιασμό των πόλεων.
description: According to Thomas Khun the evolution of scientific ideas is not a linear, but a rather abrupt procedure that is driven by few radical and significant scientific ideas, causing the so called scientific revolutions. In modern science, the critical thresholds that constitute these revolutions are the Newtonian physics, Einstein’s theory of relativity, quantomechanics, and the science of non-linear dynamics. Every scientific revolution was accompanied with a set of ideas that influenced many different scientific fields and aspects of everyday life establishing new worldviews. Main aim of the thesis is to expose how the scientific revolutions have influenced the way we study and design urban space. Therefore, this thesis attempts to request all the possible methodological tools that can be derived from the field of physical sciences and be used in the study of urban space. While trying to describe each worldview, there are references in other cognitive fields, such as philosophy and arts.
On the Lichnerowicz operator in traversable wormhole spacetimes
Creators: name: Garattini, Remo
name: Nicolini, Piero
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: The evaluation of Casimir energies in curved background spacetimes is an essential ingredient to study the stability of traversable wormholes. In practice one has to calculate the contribution of the transverse-traceless component of the metric perturbation on a curved spacetime background. This implies the study of an eigenvalue equation involving a modified form of the Lichnerowicz operator. For arbitrary background spacetimes, however, such an operator does not display transverse-traceless properties, a fact that impedes the determination of the eigenvalues. Against this background, we show that the problem can be circumvented. Casimir energies can be calculated by gauging the original form of the modified Lichnerowicz operator into a transverse-traceless one.
description: 8 pages, version in press on IOP SciNotes
Quantum Zeno Effect in the Decoherent Histories
Creators: name: Wallden, Petros
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum Zeno effect arises due to frequent observation. That implies the existence of some experimenter and its interaction with the system. In this contribution, we examine what happens for a closed system if one considers a quantum Zeno type of question, namely: "what is the probability of a system, remaining always in a particular subspace". This has implications to the arrival time problem that is also discussed. We employ the decoherent histories approach to quantum theory, as this is the better developed formulation of closed system quantum mechanics, and in particular, dealing with questions that involve time in a non-trivial way. We get a very restrictive decoherence condition, that implies that even if we do introduce an environment, there will be very few cases that we can assign probabilities to these histories, but in those cases, the quantum Zeno effect is still present.
description: 7 pages, To appear in DICE 2006 (Decoherence Information Complexity and Entropy) conference proceedings
เขตอำนาจศาลเหนือการละเมิดเครื่องหมายการค้าในอินเตอร์เน็ต
Creators: name: ธีรศักดิ์ กองสมบัติ
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: การละเมิดเครื่องหมายการค้า, เขตอำนาจศาล, อินเตอร์เน็ต

description: 3, 32, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
บุคลิกภาพเชิงรุก การรับรู้พลังอำนาจเชิงจิตวิทยา ความสามารถในการตัดสินใจและองค์การแห่งการเรียนรู้ที่ส่งผลต่อผลการปฏิบัติงานของหัวหน้างานระดับต้นโรงงานประกอบรถยนต์
Creators: name: ชัชชมนต์  อินทรภิรมย์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: บุคลิกภาพเชิงรุก, การรับรู้พลังอำนาจเชิงจิตวิทยา, ความสามารถในการตัดสินใจ, องค์การแห่งการเรียนรู้, ผลการปฏิบัติงาน

description: 1, 33, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Bringing Yang-Mills Theory Closer to Quasiclassics
Creators: name: Shifman, Mikhail
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A deformation of pure Yang-Mill theory by a phantom field similar to the Faddeev-Popov ghost is considered. In this theory an {\em Ersatz}-supersymmetry is identified which results in cancellation of quantum corrections up to two-loop order. A quadruplet built from two complex fields in the adjoint -- the Faddeev-Popov ghost $c^a$ and the phantom $Φ^a$, all with the wrong statistics -- balances four gauge fields $a_μ^a$. At this level, the instanton measure and the $β$ function is fully determined by quasiclassics. In a simple $ϕ^4$ theory with a phantom added I identify a strictly conserved {\em Ersatz}-supercurrent. In the latter theory unitarity of amplitudes persists despite the presence of the phantom. In deformed Yang-Mills it is likely (although not proven) to persist too in all amplitudes with only gluon external legs. It remains to be seen whether this construction is just a device facilitating some loop calculations or broader applications can be found.
description: 10 pages, 4 figures. V. 2: typos corrected; Two explanatory paragraphs added in Section 6. Accepted for publication in PRD
Interface effects at a half-metal/ferroelectric junction
Creators: name: Yamauchi, Kunihiko
name: Sanyal, Biplab
name: Picozzi, Silvia
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetoelectric effects are investigated ab-initio at the interface between half-metallic and ferroelectric prototypes: Heusler Co$_2$MnSi and perovskite BaTiO$_3$. For the Co-termination ferroelectricity develops in BaTiO$_3$ down to nanometer thicknesses, whereas for the MnSi-termination a paraelectric and a ferroelectric state energetically compete, calling for a full experimental control over the junction atomic configuration whenever a ferroelectric barrier is needed. Switch of the electric polarization largely affects magnetism in Co$_2$MnSi, with magnetoelectric coupling due to electronic hybridization at the MnSi termination and to structural effects at the Co-termination. Half-metallicity is lost at the interface, but recovered already in the subsurface layer.
description: 4 pages, 3figures, accepted for publication in Appl. Phys. Lett
Effects of Asparagus Trims By-Product Supplementation in Laying Hens Diets on Nutrient Digestibility and Productive Performance
Creators: name: Manatsanun Nopparatmaitree
name: Anunya Panthong
name: Siwaporn Paengkoum
name: Pornpan Saenphoom
Publisher: name: Silpakorn University Research and Development Institute
Year: 2014
Subjects: Asparagus trims, Laying hen, Hen-day egg production, Egg weight, Digestibility

description: 1, 8, Silpakorn University Science and Technology Journal
Multipole classification in 122 magnetic point groups for unified understanding of multiferroic responses and transport phenomena
Creators: name: Yatsushiro, Megumi
name: Kusunose, Hiroaki
name: Hayami, Satoru
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Mutual interplay between the electronic degrees of freedom in solids, such as charge, spin, orbital, sublattice, and bond degrees of freedom, is a source of cross-correlated phenomena with unconventional electronic ordered states. Such degrees of freedom can be described by four types of multipoles (electric, magnetic, magnetic toroidal, and electric toroidal) in a unified way, which enable us to tightly connect the microscopic degrees of freedom with macroscopic physical responses in a transparent manner. We complete a classification of the multipoles in all 122 magnetic point groups based on the group theory. The classification is useful to identify potentially active multipoles not only in ordinary ferromagnetic and antiferromagnetic orderings but also in exotic orderings breaking time-reversal symmetry, e.g., a loop-current state. Moreover, the classification gives an insight into the microscopic origin of the cross-correlated responses and quantum transports. By analyzing response functions up to the second order, we summarize the indispensable multipole moments for various responses, such as the linear magnetoelectric, piezoelectric, and elastic responses, and the nonlinear conductivity and Nernst coefficient. Our results highly promote a further discovery of functional multiferroic materials, guided by the bottom-up material design based on the symmetry-adapted multipoles.
description: 46 pages, 2 figures, 36 tables
Caderno de resumos - XV Jogo do Livro
Creators: name: Centro de alfabetização, leitura e escrita - Ceale
Publisher: name: Zenodo
Year: 2025

description: Este caderno reúne os resumos das comunicações apresentadas no “XV Jogo do Livro: A Literatura Infantil e Juvenil e o Universo da Tradução”, realizado na Faculdade de Educação da Universidade Federal de Minas Gerais (FaE/UFMG), nas modalidades presencial e on-line, do dia 30 de outubro a 01 de novembro de 2024.
Green function theory versus Quantum Monte Carlo calculations for thin magnetic films
Creators: name: Henning, S.
name: Koermann, F.
name: Kienert, J.
name: Schwieger, S.
name: Nolting, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this work we compare numerically exact Quantum Monte Carlo (QMC) calculations and Green function theory (GFT) calculations of thin ferromagnetic films including second order anisotropies. Thereby we concentrate on easy plane systems, i.e. systems for which the anisotropy favors a magnetization parallel to the film plane. We discuss these systems in perpendicular external field, i.e. B parallel to the film normal. GFT results are in good agreement with QMC for high enough fields and temperatures. Below a critical field or a critical temperature no collinear stable magnetization exists in GFT. On the other hand QMC gives finite magnetization even below those critical values. This indicates that there occurs a transition from non-collinear to collinear configurations with increasing field or temperature. For slightly tilted external fields a rotation of magnetization from out-of-plane to in-plane orientation is found with decreasing temperature.
description: 7 pages, 9 figures, accepted for publication in PRB
Continuous Mott transition in semiconductor moiré superlattices
Creators: name: Li, Tingxin
name: Jiang, Shengwei
name: Li, Lizhong
name: Zhang, Yang
name: Kang, Kaifei
name: Zhu, Jiacheng
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Chowdhury, Debanjan
name: Fu, Liang
name: Shan, Jie
name: Mak, Kin Fai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The evolution of a Landau Fermi liquid into a nonmagnetic Mott insulator with increasing electronic interactions is one of the most puzzling quantum phase transitions in physics. The vicinity of the transition is believed to host exotic states of matter such as quantum spin liquids, exciton condensates and unconventional superconductivity. Semiconductor moiré materials realize a highly controllable Hubbard model simulator on a triangular lattice, providing a unique opportunity to drive a metal-insulator transition (MIT) via continuous tuning of the electronic interactions. Here, by electrically tuning the effective interaction strength in MoTe2/WSe2 moiré superlattices, we observe a continuous MIT at a fixed filling of one electron per unit cell. The existence of quantum criticality is supported by the scaling behavior of the resistance, a continuously vanishing charge-gap as the critical point is approached from the insulating side, and a diverging quasiparticle effective mass from the metallic side. We also observe a smooth evolution of the low-temperature magnetic susceptibility across the MIT and find no evidence of long-range magnetic order down to ~ 5% of the Curie-Weiss temperature. The results signal an abundance of low-energy spinful excitations on the insulating side that is further corroborated by the presence of the Pomeranchuk effect on the metallic side. Our results are consistent with the universal critical theory of a continuous MIT from a Landau Fermi liquid to a nonmagnetic Mott insulator in two dimensions.
Velocity Renormalization and Carrier Lifetime in Graphene from Electron-Phonon Interaction
Creators: name: Park, Cheol-Hwan
name: Giustino, Feliciano
name: Cohen, Marvin L.
name: Louie, Steven G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a first-principles investigation of the phonon-induced electron self-energy in graphene. The energy dependence of the self-energy reflects the peculiar linear bandstructure of graphene and deviates substantially from the usual metallic behavior. The effective band velocity of the Dirac fermions is found to be reduced by 4-8%, depending on doping, by the interaction with lattice vibrations. Our results are consistent with the observed linear dependence of the electronic linewidth on the binding energy in photoemission spectra.
description: 4 pages, 4 figures; reference 22 added, numerical error corrected
Nonlinear finite element analysis of multilayered beam-columns
Creators: name: Chandra, Rajesh
Publisher: name: University of British Columbia
Year: 2010

description: A finite element model has been developed in this thesis for predicting strength and stiffness behavior of multilayered beam-columns. The analysis incorporates material and geometric nonlinearities in order to determine the ultimate load carrying capacity. The finite element model takes into account the continuous variability of material properties along the length of layers so that multilayered wood beam-columns can be analyzed. Transverse as well as lateral bending in combination with axial tension or compression can be considered along with different layer configurations, various support and loading conditions. A computer program has been developed based on this formulation. Cubic beam elements have been used. Numerical integration of the virtual work equations has been carried out using Gauss quadrature. The resulting set of nonlinear equations is solved by using the Newton-Raphson scheme. Numerical investigations have been carried out to verify the results and test the capabilities of the program.
Computation of the Biot-Savart line integral with higher-order convergence using straight segments
Creators: name: McGreivy, Nick
name: Zhu, Caoxiang
name: Gunderson, Lee
name: Hudson, Stuart R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: One common approach to computing the magnetic field produced by a filamentary current-carrying coil is to approximate the coil as a series of straight segments. The Biot-Savart field from each straight segment is known analytically. However, if the endpoints of the straight segments are chosen to lie on the coil, then the accuracy of the Biot-Savart computation is generally only second-order in the number of endpoints. We propose a simple modification: shift each endpoint off the coil in the outwards normal direction by an amount proportional to the local curvature. With this modification, the Biot-Savart accuracy increases to fourth order and the numerical error is dramatically reduced for a given number of discretization points.
Consequences of Sweden Cancelling Elsevier
Creators: name: Olsson, Lisa
name: Lindelöw, Camila Hertil
name: Jakobsson, Frida
name: Österlund, Lovisa
Publisher: name: Zenodo
Year: 2019

description: In May last year, the National Library of Sweden proclaimed that Swedish higher education institutions (HEIs) and government agencies had followed the German example and cancelled their subscriptions with Elsevier. Elsevier had been unable to accommodate the requirements of Bibsam (the negotiating Swedish Library Consortium) on OA and affordability. The press release on the cancellation stirred unprecedented international attention.

This cancellation has potential consequences for ~36,000 academic researchers or research students, ~6,000 government agency employees, and ~80,000 advanced level students, their institutions, and the Consortium. The Bibsam Steering Committee has therefore put together an evaluation group to assess the effects of the cancellation.

For this evaluation (in progress), we created two surveys to collect data from users and licensing staff from all of the 44 institutions that had an agreement with Elsevier at the time of cancellation. We collected economic, publication, and interlibrary loans data from the cancelling institutions. We contacted Swedish, Norwegian and Danish license negotiators, as well as rectors, library directors and a financial analyst of the academic publishing market.

The first survey will capture users’ strategies to access unavailable material, users’ attitudes to the cancellation and to doing future publishing/peer-reviewing/editorial work with Elsevier. The second survey will allow us to analyse the economic and administrative workload associated with the cancellation at the institutions. It also captures how the saved money will be spent. We will analyse how the cancellation was communicated to library directors and users. Finally, the conducted interviews will allow us to learn how the cancellation has affected the Consortium as a whole, its negotiations with other publishers, other countries’ negotiations with Elsevier, and also how the cancellation has affected Elsevier.

At the moment, negotiations with Elsevier are at a standstill. The findings of this evaluation may offer suggestions on what to do next. The evaluation will serve as a basis for future negotiations with Elsevier and other publishers. Its findings should be of use in strategic discussions with HEIs, research funders and representatives of the Ministry of Education and Research, and on future business models for OA to research publications.

This evaluation stresses the need for transparency in licensing agreements, as called for by LIBER. By sharing the insights from the cancellation of the Swedish agreement we hope to help create better conditions for future negotiations with publishers, in Sweden and abroad.
Matrix Ordered Operator Algebras
Creators: name: Juschenko, Ekaterina
name: Popovych, Stanislav
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 47L30; 47L55; 46L07

description: We study the question when for a given *-algebra $\mathcal{A}$ a sequence of cones $C_n\in M_n(\mathcal{A})$ can be realized as cones of positive operators in a faithful *-representation of $\mathcal{A}$ on a Hilbert space. A characterization of operator algebras which are completely boundedly isomorphic to $C\sp*$-algebras is presented.
Deformation Quantization of Nonholonomic Almost Kahler Models and Einstein Gravity
Creators: name: Vacaru, Sergiu I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Nonholonomic distributions and adapted fame structures on (pseudo) Riemannian manifolds of even dimension are employed to build structures equivalent to almost Kahler geometry and which allows to perform a Fedosov-like quantization of gravity. The nonlinear connection formalism that was formally elaborated for Lagrange and Finsler geometry is implemented in classical and quantum Einstein gravity.
description: latex 2e, 11pt, 15 pages, v4 accepted by Phys. Lett. A
Additional file 1 of Cost-effectiveness of the screen-and-treat strategies using HPV test linked to thermal ablation for cervical cancer prevention in China: a modeling study
Creators: name: Zhao, Xue-Lian
name: Zhao, Shuang
name: Xia, Chang-Fa
name: Hu, Shang-Ying
name: Duan, Xian-Zhi
name: Liu, Zhi-Hua
name: Wang, Yue-Yun
name: You, Ting-Ting
name: Gao, Meng
name: Qiao, You-Lin
name: Basu, Partha
name: Zhao, Fang-Hui
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Supplementary Materials. Fig. S1. Model structure. Fig. S2. Model outputs from the 1000 Monte Carlo simulations. Fig. S3a. Process of screening strategy with self-HPV without triage. Fig. S3b. Process of screening strategy with self-HPV16/18 triage. Fig. S3c. Process of screening strategy with self-HPV7 types triage. Fig. S3d. Process of screening strategy with physician-HPV without triage. Fig. S3e. Process of screening strategy with physician-HPV16/18 triage. Fig. S3f. Process of screening strategy with physician-HPV7 types triage. Fig. S3g. Process of screening strategy with physician-HPV with genotype triage. Fig. S3h. Process of screening strategy with physician-HPV with cytology triage. Fig. S4. Follow-up of women after treatment. Fig. S5a. Tornado diagram analysis for self-HPV without triage versus current physician-HPV with cytology strategy in urban area. Fig. S5b. Tornado diagram analysis for self-HPV without triage versus current physician-HPV with cytology strategy in rural area. Table S1. Natural history and transition probabilities parameters of cervical cancer. Table S2a. Cervical cancer screening costs for self-HPV without triage strategy. Table S2b. Cervical cancer screening costs for self-HPV16/18 triage strategy. Table S2c. Cervical cancer screening costs for self-HPV7 types triage strategy. Table S2d. Cervical cancer screening costs for physician-HPV without triage strategy. Table S2e. Cervical cancer screening costs for physician-HPV16/18 triage strategy. Table S2f. Cervical cancer screening costs for physician-HPV7 types triage strategy. Table S2g. Cervical cancer screening costs for physician-HPV with genotype triage strategy. Table S2h. Cervical cancer screening costs for physician-HPV with cytology triage strategy. Table S3. Disease status at follow-up based on combined endpoints. Table S4. Utility of women before and after thermal ablation or LEEP treatment. Table S5a. Lifetime costs, effectiveness, and incremental cost-effectiveness for all screen-and-treat strategies versus the currently used strategies (Undiscounted). Table S5b. Lifetime costs, effectiveness, and incremental cost-effectiveness for all screen-and-treat strategies versus the currently used strategies (Discounted, 3%).