cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Discovery of a Long-Duration Superflare on a Young Solar-Type Star EK Draconis with Nearly Similar Time Evolution for H$α$ and White-Light Emissions
Creators: name: Namekata, Kosuke
name: Maehara, Hiroyuki
name: Honda, Satoshi
name: Notsu, Yuta
name: Okamoto, Soshi
name: Takahashi, Jun
name: Takayama, Masaki
name: Ohshima, Tomohito
name: Saito, Tomoki
name: Katoh, Noriyuki
name: Tozuka, Miyako
name: Murata, Katsuhiro L.
name: Ogawa, Futa
name: Niwano, Masafumi
name: Adachi, Ryo
name: Oeda, Motoki
name: Shiraishi, Kazuki
name: Isogai, Keisuke
name: Nogami, Daisaku
name: Shibata, Kazunari
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Young solar-type stars are known to show frequent "superflares", which may severely influence the habitable worlds on young planets via intense radiations and coronal mass ejections. Here we report an optical spectroscopic and photometric observation of a long-duration superflare on the young solar-type star EK Draconis (50-120 Myr age) with the Seimei telescope and $Transiting$ $Exoplanet$ $Survey$ $Satellite$ ($TESS$). The flare energy 2.6$\times$10$^{34}$ erg and white-light flare duration 2.2 hr are much larger than those of the largest solar flares, and this is the largest superflare on a solar-type star ever detected by optical spectroscopy. The H$α$ emission profile shows no significant line asymmetry, meaning no signature of a filament eruption, unlike the only previous detection of a superflare on this star (Namekata et al. 2021, $Nat.Astron$). Also, it did not show significant line broadening, indicating that the non-thermal heating at the flare footpoints are not essential or that the footpoints are behind the limb. The time evolution and duration of the H$α$ flare are surprisingly almost the same as those of the white-light flare, which is different from general M-dwarf (super-)flares and solar flares. This unexpected time evolution may suggest that different radiation mechanisms than general solar flares are predominant, as follows: (1) radiation from (off-limb) flare loops, and (2) re-radiation via radiative backwarming, in both of which the cooling timescales of flare loops could determine the timescales of H$α$ and white light.
description: 13 pages, 4 figures, 1 table. Accepted for publication in The Astrophysical Journal Letters
การดำเนินงานและปัญหาของโรงสีข้าวชุมชนในภาคตะวันออกเฉียงเหนือ
Creators: name: วิวัฒน์ ไม้แก่นสาร
name: มลฤดี จันทรัตน์
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: แนวทางการพัฒนา, โรงสีข้าวชุมชน, ห่วงโซ่คุณค่า, การจัดการ

description: 2, 7, วารสารปัญญาภิวัฒน์
Chern-Weil Global Symmetries and How Quantum Gravity Avoids Them
Creators: name: Heidenreich, Ben
name: McNamara, Jacob
name: Montero, Miguel
name: Reece, Matthew
name: Rudelius, Tom
name: Valenzuela, Irene
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We draw attention to a class of generalized global symmetries, which we call "Chern-Weil global symmetries," that arise ubiquitously in gauge theories. The Noether currents of these Chern-Weil global symmetries are given by wedge products of gauge field strengths, such as $F_2 \wedge H_3$ and $\text{tr}(F_2^2)$, and their conservation follows from Bianchi identities. As a result, they are not easy to break. However, it is widely believed that exact global symmetries are not allowed in a consistent theory of quantum gravity. As a result, any Chern-Weil global symmetry in a low-energy effective field theory must be either broken or gauged when the theory is coupled to gravity. In this paper, we explore the processes by which Chern-Weil symmetries may be broken or gauged in effective field theory and string theory. We will see that many familiar phenomena in string theory, such as axions, Chern-Simons terms, worldvolume degrees of freedom, and branes ending on or dissolving in other branes, can be interpreted as consequences of the absence of Chern-Weil symmetries in quantum gravity, suggesting that they might be general features of quantum gravity. We further discuss implications of breaking and gauging Chern-Weil symmetries for particle phenomenology and for boundary CFTs of AdS bulk theories. Chern-Weil global symmetries thus offer a unified framework for understanding many familiar aspects of quantum field theory and quantum gravity.
description: 62 pages + appendices, 5 figures. v2: References added
Gravitational collapse in an expanding background and the role of substructure II: Excess power at small scales and its effect of collapse of structures at larger scales
Creators: name: Bagla, J. S.
name: Prasad, Jayanti
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the interplay of clumping at small scales with the collapse and relaxation of perturbations at larger scales using N-Body simulations. We quantify the effect of collapsed haloes on perturbations at larger scales using two point correlation function, moments of counts in cells and mass function. The purpose of the study is twofold and the primary aim is to quantify the role played by collapsed low mass haloes in the evolution of perturbations at large scales, this is in view of the strong effect seen when the large scale perturbation is highly symmetric. Another reason for this study is to ask whether features or a cutoff in the initial power spectrum can be detected using measures of clustering at scales that are already non-linear. The final aim is to understand the effect of ignoring perturbations at scales smaller than the resolution of N-Body simulations. We find that these effects are ignorable if the scale of non-linearity is larger than the average inter-particle separation in simulations. Features in in the initial power spectrum can be detected easily if the scale of these features is in the linear regime, detecting such features becomes difficult as the relevant scales become non-linear. We find no effect of features in initial power spectra at small scales on the evolved power spectra at large scales. We may conclude that in general, the effect on evolution of perturbations at large scales of clumping on small scales is very small and may be ignored in most situations.
description: Accepted for publication in MNRAS
A study of wood-based shear walls sheathed with oversize oriented strand board panels
Creators: name: He, Ming
Publisher: name: University of British Columbia
Year: 2009

description: A new wood based shear wall system built with nonstandard large dimension oriented strand board panels has been developed. The project described in this thesis consists of studies to 1) experimentally investigate and quantify the structural performance of the new shear wall system under monotonic and cyclic lateral loading conditions, considering different types and spacings of panel-frame nail connectors, and 2) analytically predict and model the performance of the new shear wall system. A test facility has been built for full scale shear walls of up to 2.4 x 7.3 m in dimension where both lateral and vertical loads can be applied simultaneously onto the wall assembly. The experimental program has been divided into a static and a cyclic test phase. Thirteen shear wall systems with standard 1.2 x 2.4 m and with oversize panels have been tested to investigate the influence of 1) panel size, 2) panel-frame nail connector type, 3) panel-frame nail connector spacing, and 4) cyclic loading protocol on the overall shear wall behaviour. A database on the structural performance of wood based shear walls sheathed with oversize oriented strand board panels has been generated. The database includes information on strength, stiffness and ductility properties, energy dissipation and failure modes of shear walls under different testing conditions. A substantial increase in both stiffness and lateral load carrying capacity was achieved by shear walls built with oversize panels as compared to standard panels. A further reduction in nail spacing around the perimeter of the full size panel increased the lateral load resistance to more than double that of regular walls. The failure modes in the shear walls were shown to be substantially different under monotonic and currently used cyclic test conditions. The former was mainly nail withdrawal while the latter was dominated by low cycle nail fatigue failures. A new cyclic loading protocol was proposed and tested, which resulted in failure modes similar to those observed in dynamic earthquake tests. In examining the dissipated energy as the area under the load deformation curve, it seems that the walls built with the standard panels can dissipate more energy under cyclic loading, compared to the walls built with oversize panels. Furthermore, a group of tests has been conducted to investigate the load-slip characteristics of panel-frame connectors. A nonlinear finite element analysis program has been adopted to predict and model the performance of shear walls built with oversize panels. The program results had good agreement with the initial part of the nonlinear behaviour of the shear walls in the tests, which is before the panelframe connectors failed. It could not, however, follow the test results when the connectors failed and further refinements to the program have been suggested to incorporate nail failure occurrence.
Quantum footprints of Liouville integrable systems
Creators: name: Ngoc, San Vu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 81S10, 81Q20, 58J50, 65L09

description: We discuss the problem of recovering geometric objects from the spectrum of a quantum integrable system. In the case of one degree of freedom, precise results exist. In the general case, we report on the recent notion of good labellings of asymptotic lattices.
description: 11 pages. This text reports on a talk given by the author at the QMath14 conference in Aarhus. To appear in Reviews in Mathematical Physics
ปัจจัยภาวะผู้นำการเปลี่ยนแปลง การพัฒนาทรัพยากรมนุษย์ และความพร้อมสำหรับการเปลี่ยนแปลงที่มีอิทธิพลต่อผลการปฏิบัติงานของบุคลากรในมหาวิทยาลัยในกำกับของรัฐ
Creators: name: สุปัญญดา สุนทรนนธ์
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: ภาวะผู้นำการเปลี่ยนแปลง, การพัฒนาทรัพยากรมนุษย์ความพร้อมสำหรับการเปลี่ยนแปลง, ผลการปฏิบัติงาน, บุคลากรในมหาวิทยาลัยในกำกับของรัฐ

description: 2, 7, วารสารปัญญาภิวัฒน์
The inflationary trispectrum
Creators: name: Seery, David
name: Lidsey, James E.
name: Sloth, Martin S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the trispectrum of the primordial curvature perturbation generated by an epoch of slow-roll inflation in the early universe, and demonstrate that the non-gaussian signature imprinted at horizon crossing is unobservably small, of order tau_NL < r/50, where r < 1 is the tensor-to-scalar ratio. Therefore any primordial non-gaussianity observed in future microwave background experiments is likely to have been synthesized by gravitational effects on superhorizon scales. We discuss the application of Maldacena's consistency condition to the trispectrum.
description: 23 pages, 2 diagrams drawn with feynmp.sty, uses iopart.cls. v2, replaced with version accepted by JCAP. Estimate of maximal tau_NL refined in Section 5, resulting in smaller numerical value. Sign errors in Eq. (44) and Eq. (48) corrected. Some minor notational changes
Covariant Equilibrium Statistical Mechanics
Creators: name: Lehmann, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A manifest covariant equilibrium statistical mechanics is constructed starting with a 8N dimensional extended phase space which is reduced to the 6N physical degrees of freedom using the Poincare-invariant constrained Hamiltonian dynamics describing the micro-dynamics of the system. The reduction of the extended phase space is initiated forcing the particles on energy shell and fixing their individual time coordinates with help of invariant time constraints. The Liouville equation and the equilibrium condition are formulated in respect to the scalar global evolution parameter which is introduced by the time fixation conditions. The applicability of the developed approach is shown for both, the perfect gas as well as the real gas. As a simple application the canonical partition integral of the monatomic perfect gas is calculated and compared with other approaches. Furthermore, thermodynamical quantities are derived. All considerations are shrinked on the classical Boltzmann gas composed of massive particles and hence quantum effects are discarded.
description: 22 pages, 1 figure
ความสัมพันธ์ระหว่างคุณค่าตราสินค้า ส่วนประสมทางการตลาดและความพึงพอใจของผู้ใช้บริการบัตรเครดิตของธนาคารพาณิชย์ไทยที่มีอิทธิพลต่อกลยุทธ์การสร้างความภักดีต่อตราสินค้า
Creators: name: ภูมิภัทร รัตนประภา
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: บัตรเครดิต, คุณค่าตราสินค้า, ส่วนประสมทางการตลาด, ความพึงพอใจของผู้ใช้บริการบัตรเครดิตของธนาคารพาณิชย์ไทย, ความภักดีต่อตราสินค้า

description: 2, 7, วารสารปัญญาภิวัฒน์
Gravitational instability via the Schrodinger equation
Creators: name: Short, C. J.
name: Coles, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore a novel approach to the study of large-scale structure formation in which self-gravitating cold dark matter (CDM) is represented by a complex scalar field whose dynamics are governed by coupled Schrodinger and Poisson equations. We show that, in the quasi-linear regime, the Schrodinger equation can be reduced to the free-particle Schrodinger equation. We advocate using the free-particle Schrodinger equation as the basis of a new approximation method - the free-particle approximation - that is similar in spirit to the successful adhesion model. In this paper we test the free-particle approximation by appealing to a planar collapse scenario and find that our results are in excellent agreement with those of the Zeldovich approximation, provided care is taken when choosing a value for the effective Planck constant in the theory. We also discuss how extensions of the free-particle approximation are likely to require the inclusion of a time-dependent potential in the Schrodinger equation. Since the Schrodinger equation with a time-dependent potential is typically impossible to solve exactly, we investigate whether standard quantum-mechanical approximation techniques can be used, in a cosmological setting, to obtain useful solutions of the Schrodinger equation. In this paper we focus on one particular approximation method: time-dependent perturbation theory (TDPT). We elucidate the properties of perturbative solutions of the Schrodinger equation by considering a simple example: the gravitational evolution of a plane-symmetric density fluctuation. We use TDPT to calculate an approximate solution of the relevant Schrodinger equation and show that this perturbative solution can be used to successfully follow gravitational collapse beyond the linear regime, but there are several pitfalls to be avoided.
description: 49 pages, 9 figures. Shortened to 35 pages, 6 figures. Re-structured with some changed content. Original figures corrected
ประสิทธิภาพการบริหารต่อระบบหลักประกันสุขภาพถ้วนหน้า ในเขตกรุงเทพมหานคร
Creators: name: เขมมารี รักษ์ชูชีพ
name: จิตรลดา ตรีสาคร
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: ประสิทธิภาพการบริหาร, ระบบหลักประกันสุขภาพถ้วนหน้า, กรุงเทพมหานคร

description: 2, 7, วารสารปัญญาภิวัฒน์
Probing isotope effects in chemical reactions using single ions
Creators: name: Staanum, Peter F.
name: Hoejbjerre, Klaus
name: Wester, Roland
name: Drewsen, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Isotope effects in reactions between Mg+ in the 3p 2P3/2 excited state and molecular hydrogen at thermal energies are studied through single reaction events. From only ~250 reactions with HD, the branching ratio between formation of MgD+ and MgH+ is found to be larger than 5. From additional 65 reactions with H2 and D2 we find that the overall decay probability of the intermediate MgH2+, MgHD+ or MgD2+ complexes is the same. Our study shows that few single ion reactions can provide quantitative information on ion-neutral reactions. Hence, the method is well-suited for reaction studies involving rare species, e.g., rare isotopes or short-lived unstable elements.
description: 4 pages, 4 figures. Submitted for publication
ปัจจัยที่มีอิทธิพลต่อความตั้งใจในการเลือกซื้อผลิตภัณฑ์อาหารพร้อมปรุงพร้อมทานแช่แข็งภายใต้เครื่องหมายรับรองฮาลาลของผู้บริโภคมุสลิมในกรุงเทพมหานคร
Creators: name: สราวรรณ์ เรืองกัลปวงศ์
name: อรรนพ เรืองกัลปวงศ์
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: ความตั้งใจในการเลือกซื้อของผู้บริโภคมุสลิม, ผลิตภัณฑ์อาหารพร้อมปรุงพร้อมทานแช่แข็ง, เครื่องหมายรับรองฮาลาล

description: 2, 7, วารสารปัญญาภิวัฒน์
การพัฒนาตัวแบบกลยุทธ์การตลาดบริการเพื่อสร้างคุณค่าการรับรู้อาหารไทยประยุกต์สู่ตลาดอาเซียน
Creators: name: ชวัลรัชต์ ภานุภ์คนันท์
name: ศิวารัตน์ ณ ปทุม
name: ปริญ ลักษิตามาศ
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: การพัฒนาตัวแบบ, กลยุทธ์การตลาดบริการ, คุณค่าการรับรู้, อาหารไทยประยุกต์, ตลาดอาเซียน

description: พิเศษ, 7, วารสารปัญญาภิวัฒน์
Acceso y uso de materiales adicionales
Creators: name: Encuentro Sostenible
Publisher: name: figshare
Year: 2021
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: Acuerdos para el acceso y uso de los materiales adicionales de los Encuentros de Estudiantes del Posgrado en Ciencias de la Sostenibilidad, UNAM.
Para mayor información, por favor escribir al correo electrónico de contacto que aparece en el documento.
ปัจจัยทางการตลาดที่มีผลต่อการเลือกซื้อสินค้าและการบริการที่ร้านค้าปลีกแบบดั้งเดิมในเขตดุสิต
Creators: name: พิสิษฐ์ พจนจารุวิทย์
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: ส่วนประสมการตลาด, การตัดสินใจเลือกซื้อ, พฤติกรรมผู้บริโภค, ร้านค้าปลีกแบบดั้งเดิม

description: พิเศษ, 7, วารสารปัญญาภิวัฒน์
แนวทางการออกแบบรายการท่องเที่ยวสำหรับนักท่องเที่ยวชาวจีนโดยใช้เทคนิคการวิเคราะห์องค์ประกอบร่วม
Creators: name: วุฒิ สุขเจริญ
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: นักท่องเที่ยวชาวจีน, รายการท่องเที่ยว, การวิเคราะห์องค์ประกอบร่วม

description: พิเศษ, 7, วารสารปัญญาภิวัฒน์
OH Evolution in Molecular Clouds
Creators: name: Tang, Ningyu
name: Li, Di
name: Yue, Nannan
name: Zuo, Pei
name: Liu, Tie
name: Luo, Gan
name: Chen, Longfei
name: Qin, Sheng-Li
name: Wu, Yuefang
name: Heiles, Carl
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have conducted OH 18 cm survey toward 141 molecular clouds in various environments, including 33 optical dark clouds, 98 Planck Galactic cold clumps (PGCCs) and 10 Spitzer dark clouds with the Arecibo telescope. The deviations from local thermal equilibrium are common for intensity ratios of both OH main lines and satellite lines. Line intensity of OH 1667 MHz is found to correlate linearly with visual extinction $A\rm_V$ when $A\rm_V$ is less than 3 mag. It was converted into OH column density by adopting excitation temperature derived from Monte Carlo simulations with one sigma uncertainty. The relationship between OH abundance $X$(OH) relative to H$_2$ and $A\rm_V$ is found to follow an empirical formula, \begin{equation} \nonumber \frac{X(\textrm{OH})}{10^{-7}} = 1.3^{+0.4}_{-0.4} + 6.3^{+0.5}_{-0.5}\times \textrm{exp}(-\frac{A_\textrm{V}}{2.9^{+0.6}_{-0.6}}). \end{equation} Linear correlation is found between OH and $^{13}$CO intensity. Besides, nonthermal velocity dispersions of OH and $^{13}$CO are closely correlated. These results imply tight chemical evolution and spatial occupation between OH and $^{13}$CO. No obvious correlation is found between column density and nonthermal velocity dispersion of OH and HI Narrow Self-Absorption (HINSA), indicating different chemical evolution and spatial volume occupation between OH and HINSA. Using the age information of HINSA analysis, OH abundance $X$(OH) is found to increase linearly with cloud age, which is consistent with previous simulations. Fourteen OH components without corresponding CO emission were detected, implying the effectiveness of OH in tracing the `CO-dark' molecular gas.
description: 22 pages, 15 figures, 3 tables, accepted for publication in ApJS
Bipartite networks of cancer genes associated with specific drugs using pharmacogenomics
Creators: name: Berral-Gonzalez, Alberto
name: Arroyo, Monica M.
name: Alonso-Lopez, Diego
name: Bueno-Fortes, Santiago
name: Rivas, Javier De Las
Publisher: name: F1000 Research Limited
Year: 2021

description: The study of the genome-wide activity of the genes (i.e. the expression of the genes or their genetic variation) may be related to differences in the effects of drugs. Pharmacogenomics allows better mapping of the targets of cancer drugs and potential interacting secondary agents, but there are many drugs whose mechanisms of action have not been fully deciphered [1]. Complex diseases such as cancer, with hundreds of clinically approved drugs could benefit from integrating these data in clinical trials and drug development [2, 3]. The study of these drug-targets to better understand their mechanism of action could lead to possible new treatments or an improvement of existing ones by overcoming drug resistance [4]. This study comprised a large-scale screening analysis to find new associations between chemical substances (non-FDA-approved cancer drug) and human genes using transcriptomic profiling [6]. The results showed 327 genes and 2733 drugs have 6183 positive correlations, across the sixty cancer cell lines (using a threshold of Pearson coefficient r < 0.60 and p-value ≤ 0.05).
A large catalogue of molecular clouds in the southern sky
Creators: name: Guo, Helong
name: Chen, Bingqiu
name: Liu, Xiaowei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a large catalogue of molecular clouds with accurate distance estimates in the southern sky. Based on the three-dimensional (3D) dust extinction map and the best-fit extinction and distance information of over 17 million stars presented in Guo et al., we have identified 250 dust/molecular clouds in the southern sky using a hierarchical structure identification algorithm. Amongst them, 71 clouds locating at high Galactic latitudes ($b < -10^\circ$). We have estimated the distances to the clouds by fitting the extinction versus distance profiles of the lines of sight overlapping with the clouds using a simple Gaussian dust distribution model. The typical uncertainties of the distances are less than 7 per$\,$cent. We also provide the physical properties of the individual clouds, including the linear radius, mass and surface mass density.
description: 11 pages, 10 figures, 2 tables, accepted for publication in MNRAS
Differences between normal and shuffled texts: structural properties of weighted networks
Creators: name: Masucci, A. P.
name: Rodgers, G. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: In this paper we deal with the structural properties of weighted networks. Starting from an empirical analysis of a linguistic network, we analyse the differences between the statistical properties of a real and a shuffled network and we show that the scale free degree distribution and the scale free weight distribution are induced by the scale free strength distribution, that is Zipf's law. We test the result on a scientific collaboration network, that is a social network, and we define a measure, the vertex selectivity, that can easily distinguish a real network from a shuffled network. We prove, via an ad-hoc stochastic growing network with second order correlations, that this measure can effectively capture the correlations within the topology of the network.
Polygenic mutation signature of metastatic breast cancer found by robust machine learning procedure
Creators: name: Bueno-Gutiérrez, Fernando
name: Gonzalez-Velasco, Oscar
name: Bueno-Fortes, Santiago
name: Sanchez-Santos, Jose M
name: Rivas, Javier De Las
Publisher: name: F1000 Research Limited
Year: 2021

description: Exome sequence data from Breast Primary Tumors was used to find a mutation signature specific of tumors that are likely to develop metastasis in the future. Samples were divided in two groups: primary tumors that did not develop metastasis in the first five years after biopsy (negatives: 6334), and primary tumors that, while being metastasis-free at the time of biopsy, developed metastasis in that time frame (positives: 382). A train set was used to find mutations exclusive from positives, and these were ranked based on frequency and pathogenicity-scores. Then, on a balanced validation set, supervised k-means-clustering was used to exclude the 20% samples from this set that were most difficult to separate. Clustering was based on the mutations selected on the train set. On the remaining validation samples, step-wise regression was carried to output a refined list the mutations selection. The train/validation split was repeated 10,000 times and the 600 most frequent mutations defined the final signature. With this mutation signature, we were able to correctly classify 84% of the samples from a test set consisting of 100 samples from each class.
2+1 flavor light hadron spectrum and quark masses with the O(a) improved Wilson-clover quark formalism
Creators: name: JLQCD Collaboration
name: Ishikawa, T.
name: Aoki, S.
name: Fukugita, M.
name: Hashimoto, S.
name: Ishikawa, K. -I.
name: Ishizuka, N.
name: Iwasaki, Y.
name: Kanaya, K.
name: Kaneko, T.
name: Kuramashi, Y.
name: Okawa, M.
name: Taniguchi, Y.
name: Tsutsui, N.
name: Ukawa, A.
name: Yamada, N.
name: Yoshié, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a summary of results of the joint CP-PACS and JLQCD project toward a 2+1 flavor full QCD simulation with the O(a)-improved Wilson quark formalism and the Iwasaki gauge action. Configurations were generated during 2002-2005 at three lattice spacings, a~0.076, 0.100 and 0.122 fm, keeping the physical volume constant at (2.0fm)^3. Up and down quark masses are taken in the range m_{PS}/m_V~0.6-0.78. We have completed the analysis for the light meson spectrum and quark masses in the continuum limit using the full configuration set. The predicted meson masses reproduce experimental values in the continuum limit at a 1% level. The average up and down, and strange quark masses turn out to be m_{ud}^{\bar{MS}}(μ=2 GeV)=3.50(14)({}^{+26}_{-15}) MeV and m_s^{\bar{MS}}(μ=2 GeV)=91.8(3.9)({}^{+6.8}_{-4.1}) MeV. We discuss our future strategy toward definitive results on hadron spectroscopy with the Wilson-clover formalism.
description: 7 pages, 4 figures, talk presented at Lattice2006 (Hadron Spectroscopy), PoS format (v3: typos corrected)
On non-compact Heegaard splittings
Creators: name: Taylor, Scott
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57N10, 57M50

description: A Heegaard splitting of an open 3-manifold is the partition of the manifold into two non-compact handlebodies which intersect on their common boundary. This paper proves several non-compact analogues of theorems about compact Heegaard splittings. The main theorem is: if N is a compact, connected, orientable 3-manifold with non-empty boundary, containing no S^2 components, and if M is obtained from N by removing the boundary then any two Heegaard splittings of M are properly ambient isotopic. This is a non-compact analogue of the classifications of splittings of (closed surface) x I and (closed surface) x S^1 by Scharlemann-Thompson and Schultens. Work of Frohman-Meeks and a non-compact analogue of the Casson-Gordon theorem on weakly reducible Heegaard splittings are key tools.
description: 54 pages, 8 figures; Version 2 corrected typos, added references, improved Section 6 exposition
Traceable Dosimetry for MeV Ion Beams
Creators: name: Garty, Guy
name: Harken, Andrew D.
name: Brenner, David J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Biological Physics (physics.bio-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Standard dosimetry protocols exist for highly penetrating photon and particle beams used in the clinic and in research. However, these protocols cannot be directly applied to shallow penetration MeV-range ion beams. The Radiological Research Accelerator Facility has been using such beams for almost 50 years to irradiate cell monolayers, using self-developed dosimetry, based on tissue equivalent ionization chambers. To better align with the internationally accepted standards, we describe implementation of a commercial, NIST-traceable, air-filled ionization chamber for measurement of absorbed dose to water from low energy ions, using radiation quality correction factors calculated using TRS-398 recommendations. The reported dose does not depend on the ionization density in the range of 10-150 keV/micron.
description: Submitted to Journal of Instrumentation
First principles modeling of tunnel magnetoresistance of Fe/MgO/Fe trilayers
Creators: name: Waldron, Derek
name: Timoshevskii, Vladimir
name: Hu, Yibin
name: Xia, Ke
name: Guo, Hong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: By carrying out density functional theory analysis within the Keldysh non-equilibrium Green's functional formalism, we have calculated the nonlinear and non-equilibrium quantum transport properties of Fe/MgO/Fe trilayer structures as a function of external bias voltage. For well relaxed atomic structures of the trilayer, the equilibrium tunnel magnetoresistance ratio (TMR) is found to be very large and also fairly stable against small variations in the atomic structure. As a function of external bias voltage, the TMR reduces monotonically to zero with a voltage scale of about 1V, in agreement with experimental observations. We present understanding of the nonequilibrium transport properties by investigating microscopic details of the scattering states and the Bloch bands of the Fe leads.
description: 4 pages, 3 figures
Abschlusserklärung des Kongresses MissionRespekt "Christliches Zeugnis in einer multireligiösen Welt"
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 63 Nr. 4 (2014): Ökumenische Rundschau, Band 63, Heft 4
Theoretical and experimental investigations of Coulomb blockade in coupled quantum dot systems
Creators: name: Kaiser, F. J.
name: Kohler, S.
name: Hänggi, P.
name: Malecha, M.
name: Ebbecke, J.
name: Wixforth, A.
name: Schumacher, H. W.
name: Kästner, B.
name: Reuter, D.
name: Wieck, A. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Two strongly coupled quantum dots are theoretically and experimentally investigated. In the conductance measurements of a GaAs based low-dimensional system additional features to the Coulomb blockade have been detected at low temperatures. These regions of finite conductivity are compared with theoretical investigations of a strongly coupled quantum dot system and good agreement of the theoretical and the experimental results has been found.
description: 12 pages, 6 figures
Site Investigation of Bridges on and over the Parkways In Western Kentucky
Creators: name: Hu, Jindong
name: Zhao, Tong
name: Harik, Issam E.
name: Xie, Jian
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2008
Subjects: subject: Transportation Engineering

description: Determination of the seismic risk of the bridges on and over the parkways in Western Kentucky requires evaluating the current condition of the individual elements of the bridges. Except for culverts, all bridges were visually inspected, photographed and the records were stored in a database. Data of the visual inspection and the photographs were combined to form the completed site inspection forms. Any visually observed deficiencies of the bridge elements were recorded.  A Compact Disc (CD) that includes pictures of the bridges is attached to this report. The site inspection forms of all bridges on and over the parkways in Western Kentucky are combined with the bridge inventory to determine statistical figures regarding the characteristics of the bridges. The site inspection forms are an invaluable source that provides images of the existing conditions, assists in pre-earthquake preparation plans, and forms the basis to develop post-earthquake emergency response, inspection, and evaluation plans.
Comparison of lists of people who have died aged 105 and over in France: analysis of the sensitivity and specificity of lists from the RNIPP
Creators: name: Toussaint, Laurent
name: Léculier, Jean-Michel
name: Robine, Jean-Marie
Publisher: name: Zenodo
Year: 2024

description: Since May 2014, an agreement signed between the Institut national d'études démographiques (INED) and the Institut national de la statistique et des études économiques (INSEE) has provided INED with an extract of data from the NaƟonal Register for the Identification of Individuals (RNIPP). This extract concerns the nominal records of people born in France and deceased at the age of 105 and over. Under this agreement, the International Database on Longevity (IDL) has been provided with data for France on 253 supercentenarians and 10,455 people who died between the ages of 105 and 109 between 1978 and 2018. These data were the subject of an initial study published in 2021 in the monograph Exceptional Lifespans. The agreement between INED and INSEE was extended in March 2023 for a period of 5 years and already provides nominative records for a further 4 years, from 2019 to 2022, considerably increasing the French data available for IDL.

In the meantime, from December 2019 following a court ruling, INSEE has begun to publish in open data all the information received from the civil registry concerning people who have died in France. These individual name records, the oldest of which date back to 1970, make it possible to assess the quality of the RNIPP list and identify who has been removed from the RNIPP list and why. In particular, by taking all civil status documents as a reference, we can estimate the sensitivity and specificity of the RNIPP list.

Finally, since 2020, as part of the mobilization against the COVID-19 pandemic, INSEE has been regularly publishing individual records of non-nominal deaths which have occurred since 2018 and which contain additional information compared with the RNIPP and civil status data, namely the commune of residence and the place of death (hospital, home, accommodation establishment, other).

By analyzing and comparing these three lists, it is possible to assess the quality of the RNIPP data and to enhance it on certain points.
Hard-state optical wind during the discovery outburst of the black-hole X-ray dipper MAXI J1803-298
Creators: name: Sánchez, D. Mata
name: Muñoz-Darias, T.
name: Cúneo, V. A.
name: Padilla, M. Armas
name: Sánchez-Sierras, J.
name: Panizo-Espinar, G.
name: Casares, J.
name: Corral-Santana, J. M.
name: Torres, M. A. P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present twelve epochs of optical spectroscopy taken across the discovery outburst of the black hole candidate MAXI J1803-298 with the GTC and VLT telescopes. The source followed a standard outburst evolution with hard and soft states. The system displays a triangular shape in the hardness intensity diagram, consistent with that seen in high inclination black hole transients and the previously reported detection of X-ray dips. The two epochs observed during the initial hard state exhibited asymmetric emission line profiles, including a P-Cygni profile simultaneously detected in H-alpha and He I 6678, which indicates the presence of an optical wind in the system. The remaining spectra, obtained during the transition to the soft state and the subsequent decay, are instead characterized by narrower, double peaked emission lines embedded into broad absorption components. One epoch (intermediate state) also includes near-infrared coverage, revealing complex line profiles in the Paschen and Bracket series, which suggests that the outflow is still present during the outburst decay through the soft state. The growing list of low-mass X-ray binaries with optical and near-infrared outflow signatures indicates that these are common features. Furthermore, the lowest luminosity spectrum exhibits an H-alpha full-width-at-half-maximum of 1570 +- 100 km/s. This, together with previous constraints on the binary parameters, allows us to favor a compact object mass of ~ 3-10 Msun, further supporting its black hole nature.
description: 10 pages, 5 figures. Accepted for publication in ApJ Letters on the 23rd of January 2022
A framework for effective corporate communication after cyber security incidents
Creators: name: Knight, Richard
name: Nurse, Jason R. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: A major cyber security incident can represent a cyber crisis for an organisation, in particular because of the associated risk of substantial reputational damage. As the likelihood of falling victim to a cyberattack has increased over time, so too has the need to understand exactly what is effective corporate communication after an attack, and how best to engage the concerns of customers, partners and other stakeholders. This research seeks to tackle this problem through a critical, multi-faceted investigation into the efficacy of crisis communication and public relations following a data breach. It does so by drawing on academic literature, obtained through a systematic literature review, and real-world case studies. Qualitative data analysis is used to interpret and structure the results, allowing for the development of a new, comprehensive framework for corporate communication to support companies in their preparation and response to such events. The validity of this framework is demonstrated by its evaluation through interviews with senior industry professionals, as well as a critical assessment against relevant practice and research. The framework is further refined based on these evaluations, and an updated version defined. This research represents the first grounded, comprehensive and evaluated proposal for characterising effective corporate communication after cyber security incidents.
Analytical formulas for gravitational lensing
Creators: name: Amore, Paolo
name: Diaz, Santiago Arceo
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we discuss a new method which can be used to obtain arbitrarily accurate analytical expressions for the deflection angle of light propagating in a given metric. Our method works by mapping the integral into a rapidly convergent series and provides extremely accurate approximations already to first order. We have derived a general first order formula for a generic spherically symmetric static metric tensor and we have tested it in four different cases.
description: 12 pages, 6 figures; added one section with estimation of the rate of convergence of the method; modified fig.2; added some refs
Glide-Symmetric Metallic Structures with Elliptical Holes for Lens Compression
Creators: name: Alex-Amor, Antonio
name: Ghasemifard, Fatemeh
name: Valerio, Guido
name: Ebrahimpouri, Mahsa
name: Padilla, Pablo
name: Fernández-González, José M.
name: Quevedo-Teruel, Oscar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this paper, we study the wave propagation in a metallic parallel-plate structure with glide-symmetric elliptical holes. To perform this study, we derived a mode-matching technique based on the generalized Floquet theorem for glide-symmetric structures. This mode-matching technique benefits from a lower computational cost since it takes advantage of the glide symmetry in the structure. It also provides physical insight on the specific properties of Floquet modes propagating in these specific structures. With our analysis, we demonstrate that glide-symmetric structures with periodic elliptical holes exhibit an anisotropic refractive index over a wide range of frequencies. The equivalent refractive index can be controlled by tuning the dimensions of the holes. Finally, by combining the anisotropy related to the elliptical holes and transformation optics, a Maxwell fish-eye lens with a 33.33% size compression is designed. This lens operates in a wideband frequency range from 2.5 GHz to 10 GHz.
description: 12 pages, 19 figures
A novel way of measuring the gas disk mass of protoplanetary disks using N2H+ and C18O
Creators: name: Trapman, L.
name: Zhang, K.
name: Hoff, M. R. L. van 't
name: Hogerheijde, M. R.
name: Bergin, E. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Measuring the gas mass of protoplanetary disks, the reservoir available for giant planet formation, has proven to be difficult. We currently lack a far-infrared observatory capable of observing HD, and the most common gas mass tracer, CO, suffers from a poorly constrained CO-to-H$_2$ ratio. Expanding on previous work, we investigate if N2H+, a chemical tracer of CO poor gas, can be used to observationally measure the CO-to-H$_2$ ratio and correct CO-based gas masses. Using disk structures obtained from the literature, we set up thermochemical models for three disks, TW Hya, DM Tau and GM Aur, to examine how well the CO-to-H$_2$ ratio and gas mass can be measured from N2H+ and C18O line fluxes. Furthermore, we compare these gas masses to independently gas masses measured from archival HD observations. The N2H+ (3-2)/C18O (2-1) line ratio scales with the disk CO-to-H$_2$ ratio. Using these two lines, we measure 4.6e-3 Msun < Mdisk < 1.1e-1 Msun for TW Hya, 1.5e-2 Msun < Mdisk < 9.6e-2 Msun for GM Aur and 3.1e-2 Msun < Mdisk < 9.6e-2 Msun for DM Tau. These gas masses agree with values obtained from HD within their respective uncertainties. The uncertainty on the N2H+ + C18O gas mass can be reduced by observationally constraining the cosmic ray ionization rate in disks. These results demonstrate the potential of using the combination of N2H+ and C18O to measure gas masses of protoplanetary disks.
description: 10 pages, 5 figures, accepted for publication in ApJL
Wave-mechanics and the adhesion approximation
Creators: name: Short, C. J.
name: Coles, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The dynamical equations describing the evolution of a self-gravitating fluid of cold dark matter (CDM) can be written in the form of a Schrodinger equation coupled to a Poisson equation describing Newtonian gravity. It has recently been shown that, in the quasi-linear regime, the Schrodinger equation can be reduced to the exactly solvable free-particle Schrodinger equation. The free-particle Schrodinger equation forms the basis of a new approximation scheme -the free-particle approximation - that is capable of evolving cosmological density perturbations into the quasi-linear regime. The free-particle approximation is essentially an alternative to the adhesion model in which the artificial viscosity term in Burgers' equation is replaced by a non-linear term known as the quantum pressure. Simple one-dimensional tests of the free-particle method have yielded encouraging results. In this paper we comprehensively test the free-particle approximation in a more cosmologically relevant scenario by appealing to an N-body simulation. We compare our results with those obtained from two established methods: the linearized fluid approach and the Zeldovich approximation. We find that the free-particle approximation comprehensively out-performs both of these approximation schemes in all tests carried out and thus provides another useful analytical tool for studying structure formation on cosmological scales.
description: 27 pages, 8 figures. Shortened to 19 pages, 7 figures. Re-structured with some changed content. Title changed accordingly
พฤติกรรมและความพึงพอใจของนักท่องเที่ยวชาวไทยที่มีต่อการท่องเที่ยวเกาะเกร็ดจังหวัดนนทบุรี
Creators: name: นันทิตา เพชราภรณ์
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: พฤติกรรมของนักท่องเที่ยว, ความพึงพอใจของนักท่องเที่ยว, เกาะเกร็ด

description: พิเศษ, 7, วารสารปัญญาภิวัฒน์
Secure communication between UAVs using a method based on smart agents in unmanned aerial vehicles
Creators: name: Faraji-Biregani, Maryam
name: Fotohi, Reza
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Unmanned aerial vehicles (UAVs) can be deployed to monitor very large areas without the need for network infrastructure. UAVs communicate with each other during flight and exchange information with each other. However, such communication poses security challenges due to its dynamic topology. To solve these challenges, the proposed method uses two phases to counter malicious UAV attacks. In the first phase, we applied a number of rules and principles to detect malicious UAVs. In this phase, we try to identify and remove malicious UAVs according to the behavior of UAVs in the network in order to prevent sending fake information to the investigating UAVs. In the second phase, a mobile agent based on a three-step negotiation process is used to eliminate malicious UAVs. In this way, we use mobile agents to inform our normal neighbor UAVs so that they do not listen to the data generated by the malicious UAVs. Therefore, the mobile agent of each UAV uses reliable neighbors through a three-step negotiation process so that they do not listen to the traffic generated by the malicious UAVs. The NS-3 simulator was used to demonstrate the efficiency of the SAUAV method. The proposed method is more efficient than CST-UAS, CS-AVN, HVCR, and BSUM-based methods in detection rate, false positive rate, false negative rate, packet delivery rate, and residual energy.
description: 25 pages, 10 figures, 14 tables, JCR (Q2). J Supercomput (2020)