cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Efficient quantum-chemical geometry optimization and the structure of large icosahedral fullerenes
Creators: name: Dunlap, Brett I.
name: Zope, Rajendra. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Geometry optimization is efficient using generalized Gaunt coefficients, which significantly limit the amount of cross differentiation for multi-center integrals of high-angular-momentum solid-harmonic basis sets. We parameterize the fully analytic formulation of density functional theory (ADFT), called the Slater-Roothaan method, developed in our group to give the exact geometry of C60 fullerene. The parametrized ADFT is subsequently used to optimize geometries of most stable C240, C540, C960, C1500 and C2160 icosahedral fullerenes. The calculations are all electron, the orbital basis set includes d functions and the exchange-correlation-potential basis set includes f functions. The calculation of C2160 fullerene employed about 39000 basis functions and is the largest calculation reported on any isolated molecule to-date. The evolution of interatomic distance and atomization energy from C60 to graphite has been investigated.
description: minor revision, typos corrected
A brief investigation on CDSP data users
Creators: name: Brunel, Valentin
Publisher: name: Zenodo
Year: 2019
Subjects: data users
metrics
CDSP
SSH data

description: This presentation investigates the profile and opinions of CDSP data users from 2012 to 2019. As disseminating data is amongst CDSP's historic missions, knowledge of who asks for what data is crucial to the development of this activity. On the whole, CDSP users have become more and more diverse as they grew more numerous, indicating a possible diversification of data requested.
Evaluation of brown planthopper resistance in parental lines for developing aromatic non-photosensitive glutinous rice lines resistance to brown planthopper
Creators: name: Butsakorn Phiwngoenyuang, Sakda Kongsila
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: glutinous rice
rice breeding
brown planthopper
Bph3
Bph32

description: Khon Kaen Agriculture Journal, 52, 3, 534-549
Polarization-Engineered InGaN/GaN Heterojunctions for Photovoltaic Applications
Creators: name: Kazazis, Stylianos A.
name: Papadomanolaki, Elena
name: Iliopoulos, Eleftherios
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The photovoltaic properties of (0001) n-InGaN/p-GaN single heterojunctions were investigated numerically and compared with those of conventional p-GaN/i-InGaN/n-GaN structures, employing realistic material parameters. This alternative device architecture exploits the large polarization fields, and high efficiency modules are achieved for In-rich, partially relaxed and coherently strained InGaN films. Conversion efficiencies up to 14% under AM1.5G illumination can be reached, revealing the true potential of InGaN single junction solar cells with proper design.
description: A modified version of this work has been submitted to IEEE Journal of Photovoltaics
Does Money Make the Entrepreneurial World Go Round?
Creators: name: Venancio, Ana
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Lack of capital (liquidity constraints) is one of the oldest explanations advanced to explain lack of firm entry, performance, and survival. In this paper, we model each of these business steps in a causal chain by testing the liquidity constraints theory. We probe the relationships between capital, and firm entry, size, and survival by computing an exogenous measure of liquidity (historical earnings), calculating measures of human capital, and developing instruments to cope with the difficulty of measuring business quality. With this approach, we are able to distinguish more precisely the capital and business-quality effects on firm size and survival. We analyze these issues using a unique Portuguese database that traces the mobility of the founders across firms and matches founders with their ventures’ characteristics. Our results indicate that money is important to some extent in the entrepreneurial world, but not so much as previous work has argued. We find only weak support that individuals with more earnings are more likely to attempt entrepreneurship, except in the professional industries. However, founder earnings are an important determinant of start-ups financial capital. Entrepreneurs contribute more of their own capital when they accumulate larger earnings, which enable founders to obtain larger funds from external institutions. Start-up size is positively determined by financial capital, but whether the latter affects the survival rate is questionable. Overall, lack of earnings inhibits individuals from raising the desired amount of financial capital and establishing firms with the desired scale. Nevertheless, after excluding alternative theories, we find support for the liquidity constraints hypothesis (capital market imperfections) only in the funding decisions and not in entry or size decisions.
Sampling the protonation states: pH-dependent UV absorption spectrum of a polypeptide dyad
Creators: name: Pieri, Elisa
name: Ledentu, Vincent
name: Ferré, Nicolas
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: When a chromophore interacts with titrable molecular sites, the modeling of its photophysical properties requires to take into account all their possible protonation states. We have developed a multi-scale protocol, based on constant-pH molecular dynamics simulations coupled to QM/MM excitation energy calculations, aimed at sampling both the phase space and protonation state space of a short polypeptide featuring a tyrosine--tryptophan dyad interacting with two aspartic acid residues. We show that such a protocol is accurate enough to reproduce the tyrosine UV absorption spectrum at both acidic and basic pH. Moreover, it is confirmed that UV-induced radical tryptophan is reduced thanks to an electron transfer from tyrosine, ultimately explaining the complex pH-dependent behavior of the peptide spectrum.
Boundary fermions and the plane wave
Creators: name: Mattik, Tako
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct branes in the plane wave background under the inclusion of fermionic boundary fields. The resulting deformed boundary conditions in the bosonic and fermionic sectors give rise to new integrable and supersymmetric branes of type (n,n). The extremal case of the spacetime filling (4,4)-brane is shown to be maximally spacetime supersymmetric.
description: 44 pages, LaTeX; v2: refs added, typos removed, to appear in JHEP
Additional file 1 of Triglyceride–glucose index as a marker of adverse cardiovascular prognosis in patients with coronary heart disease and hypertension
Creators: name: Liu, Yahui
name: Zhu, Binbin
name: Zhou, Weicen
name: Du, Yao
name: Qi, Datun
name: Wang, Chenxu
name: Cheng, Qianqian
name: Zhang, You
name: Wang, Shan
name: Gao, Chuanyu
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Hematology

description: Additional file 1: Table S1. Univariate Cox proportional hazard analysis between variables and primary endpoint. Table S2. Sensitivity analysis for the association between the TyG index and outcomes. Table S3. Multivariable Cox regression analysis for the association between the TyG index and outcomes.
Does Managed Care Matter? Hospital Utilization in the U. S. between 1985 and 1993
Creators: name: Farasat A.S. Bokhari
name: Caulkins, Jonathan
name: Gaynor, Martin
name: Wholey, Douglas R.
Publisher: name: Carnegie Mellon University
Year: 1998
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Heinz College paper
FunTAL: Reasonably Mixing a Functional Language with Assembly
Creators: name: Patterson, Daniel
name: Perconti, Jamie
name: Dimoulas, Christos
name: Ahmed, Amal
Publisher: name: arXiv
Year: 2017
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: We present FunTAL, the first multi-language system to formalize safe interoperability between a high-level functional language and low-level assembly code while supporting compositional reasoning about the mix. A central challenge in developing such a multi-language is bridging the gap between assembly, which is staged into jumps to continuations, and high-level code, where subterms return a result. We present a compositional stack-based typed assembly language that supports components, comprised of one or more basic blocks, that may be embedded in high-level contexts. We also present a logical relation for FunTAL that supports reasoning about equivalence of high-level components and their assembly replacements, mixed-language programs with callbacks between languages, and assembly components comprised of different numbers of basic blocks.
description: 15 pages; implementation at https://dbp.io/artifacts/funtal/; published in PLDI '17, Proceedings of the 38th ACM SIGPLAN Conference on Programming Language Design and Implementation, June 18 - 23, 2017, Barcelona, Spain
Does in-house R&D increase bargaining power? Evidence from the pharmaceutical industry
Creators: name: Arora, Ashish
name: Pammolli, Fabio
name: Vogt, William B.
name: Jiwoong  Yoon
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: According to Gans & Stern (1999), firms engage in R&D spending, in part, in order to improve their bargaining position as buyers in the market for technology. We test this theory empirically with data from the pharmaceutical industry. We develop and estimate a structural model of R&D spending and licensing. We find that R&D spending does improve the bargaining position of licensees; although, the effect is small. In the absence of the bargaining power effect, spending on R&D would be about 6% lower than it is. We also find that entry of technology licensors reduces firms’ own R&D but has a positive overall effect on innovation.
"O'QUVCHILARDA TEXNOLOGIK TA'LIM  FANI BO'YICHA KO'NIKMALARINI PEDAGOGIK METODLAR ASOSIDA SHAKLLANTIRISH  IMKONIYATI"
Creators: name: Chirchiq davlat pedagogoka universiteti  Texnologik ta'lim yònalishi 2-kurs 22/2-guruh talabasi Rustamova Farangis Komoljon qizi
Publisher: name: Zenodo
Year: 2024

description: Bu maqola o'quvchilarda texnologik ta'lim fani bo'yicha ko'nikmalarini pedagogik metodlar asosida shakllantirish imkoniyatini o'rganishga bag'ishlangan. Maqolada texnologik ta'limning o'quvchilarning o'zlashtirilishi va ma'lumotlarini tushuntirishning ahamiyati ta'kidlanadi. Pedagogik metodlar, masalan, masofaviy ta'lim, taqdimot, amaliy mashg'ulotlar, boshqa texnik vositalar, va boshqalar kabi muhim asoslarga e'tibor beriladi. Maqolada o'quvchilarning motivatsiyasini oshirish uchun texnologik ta'lim vositalaridan foydalanishning metodikasiga duch kelinishi muhimligi haqida ma'lumotlar keltiriladi. O'quvchilarni samarali tarzda qo'llab-quvvatlash uchun interaktiv darsliklar, online darslar, maqollar, animatsiyalar, va boshqa interaktiv vositalar haqida ko'rsatmalar beriladi.

Kalit so'zlar: texnologik ta'lim, pedagogik metodlar, ko'nikmalar rivojlantirish, talaba motivatsiyasi, interaktiv vositalar, masofaviy ta'lim, taqdimot, amaliy mashg'ulotlar.
Determination of Organic Nitrogen Compounds in Gasoline by Water-Assisted Dispersive Solid-Phase Extraction (DSPE) and High-Performance Liquid Chromatography-High-Resolution Mass Spectrometry (HPLC-HRMS)
Creators: name: Wang, Zhengyu
name: Hu, Yufeng
name: Ding, Zhiduo
name: Zhou, Hao
name: Zhang, Jianye
name: Zhan, Jingjing
name: Wu, Minghuo
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: For the identification of trace-level organic nitrogen compounds (NCs) in gasoline, a method consisting of water-assisted dispersive solid-phase extraction (DSPE) and high-performance liquid chromatography-high resolution mass spectrometry was developed in which mixed-mode cation exchange was used as the adsorbent. To increase the DSPE efficiency, water was dispersed into the gasoline to increase the pronation of NCs and enhance the ionic interaction with the adsorbent. After systematic optimization of DSPE conditions, including the adsorbent mass, sample volume, water to gasoline ratio, sample loading time, washing and elution solvents, sensitive determination of NCs (detection limits from 0.1 to 5 ng/L for the 14 analytes) was achieved by this method with a 100-fold enrichment. A number of unknown NC isomers were observed from the extracted ion chromatograms based on the accurate determination of mass-to-charge ratio (m/z), from which two sets of isomers at theoretical m/z of 122.09643 and 136.11208 were selected for identification. By careful elucidation of the product ion spectra of the selected ions, 16 NCs were putatively identified, in which six non-aniline homologs were reported for the first time.
Effects of elevated carbon dioxide and temperature on chlorophyll, leaf area and yield of rice cultivar RD43
Creators: name: Rutairat Phothi, Chonlada Dechakiatkrai Theerakarunwong
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: carbon dioxide
temperature
rice
chlorophyll
yield

description: Khon Kaen Agriculture Journal, 52, 3, 550-561
Octahedral tilts and electronic correlations in La_7/8Sr_1/8MnO_3
Creators: name: Geck, J.
name: Wochner, P.
name: Kiele, S.
name: Reutler, P.
name: Revcolevschi, A.
name: Büchner, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a resonant x-ray scattering study of the octahedral tilt order between 50K and 310K in La_7/8Sr_1/8MnO_3. At the La L_II-edge the resonant (300) reflection probes cooperative tilts of the MnO_6-octahedra in this material, as verified by a model caclulation as well as a LDA+U study. The investigation of the octahedral tilts as a function of temperature and the comparison to the lattice parameters, the magnetization and the superlattice reflections related to charge and/or orbital order reveal an intimate coupling between electronic and tilt degrees of freedom in La_7/8Sr_1/8MnO_3.
Additional file 2 of Triglyceride–glucose index as a marker of adverse cardiovascular prognosis in patients with coronary heart disease and hypertension
Creators: name: Liu, Yahui
name: Zhu, Binbin
name: Zhou, Weicen
name: Du, Yao
name: Qi, Datun
name: Wang, Chenxu
name: Cheng, Qianqian
name: Zhang, You
name: Wang, Shan
name: Gao, Chuanyu
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Hematology

description: Additional file 2: Figure S1. Kaplan–Meier curves for endpoint events according to quartiles of TyG index. A: Kaplan–Meier curves for primary endpoint events; B: Kaplan–Meier curves for ASCVD events.
Periodic three-body orbits with vanishing angular momentum in the Jacobi-Poincare "strong" potential
Creators: name: Dmitrašinović, V
name: Petrović, Luka V
name: Šuvakov, Milovan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Moore and Montgomery have argued that planar periodic orbits of three bodies moving in the Jacobi-Poincare, or the "strong" pairwise potential $\sum_{i>j}\frac{-1}{r_{ij}^2}$, can have all possible topologies. Here we search systematically for such orbits with vanishing angular momentum and find 24 topologically distinct orbits, 22 of which are new, in a small section of the allowed phase space, with a tendency to overcrowd, due to overlapping initial conditions. The topologies of these 24 orbits belong to three algebraic sequences defined as functions of integer $n=0,1,2, \ldots$. Each sequence extends to $n \to \infty$, but the separation of initial conditions for orbits with $n \geq 10$ becomes practically impossible with a numerical precision of 16 decimal places. Nevertheless, even with a precision of 16 decimals, it is clear that in each sequence both the orbit's initial angle $ϕ_n$ and its period $T_n$ approach finite values in the asymptotic limit ($n \to \infty$). Two of three sequences are overlapping in the sense that their initial angles $ϕ$ occupy the same segment on the circle and their asymptotic values $ϕ_{\infty}$ are (very) close to each other. The actions of these orbits rise linearly with the index $n$ that describes the orbit's topology, which is in agreement with the Newtonian case. We show that this behaviour is consistent with the assumption of analyticity of the action as a function of period.
description: published in Journal of Physics A: Mathematical and Theoretical
Do You Go to College If Your Parents Want You To?
Creators: name: Fernandes, Ronald
name: McElroy, Susan
Publisher: name: Carnegie Mellon University
Year: 2000
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Heinz College paper
Soft Electromagnetic Radiations from Relativistic Heavy Ion Collisions
Creators: name: Pal, Dipali
name: Roy, Pradip Kumar
name: Sarkar, Sourav
name: Srivastava, Dinesh Kumar
name: Sinha, Bikash
Publisher: name: arXiv
Year: 1996
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The production of low mass dileptons and soft photons from thermalized Quark Gluon Plasma (QGP) and hadronic matter in relativistic heavy ion collisions is evaluated. A boost invariant longitudinal and cylindrically symmetric transverse expansion of the systems created in central collision of lead nuclei at CERN SPS, BNL RHIC, and CERN LHC, and undergoing a first order phase transition to hadronic matter is considered. A large production of low mass (M< 0.3 GeV) dileptons, and soft photons (p_T< 0.4 GeV) is seen to emanate from the bremsstrahlung of quarks and pions. We find an increase by a factor of 2--4 in the low mass dilepton and soft photon yield as we move from SPS to RHIC energies, and an increase by an order of magnitude as we move from SPS to LHC energies. Most of the soft radiations are found to originate from pion driven processes at SPS and RHIC energies, while at the LHC energies the quark and the pion driven processes contribute by a similar amount. The study of the transverse mass distribution is seen to provide interesting details of the evolution. We also find a unique universal behaviour for the ratio of M^2 weighted transverse mass distribution for M= 0.1 GeV to that for M= 0.2 and 0.3 GeV, as a function of M_T, for SPS, RHIC, and LHC energies, in the absence of transverse expansion of the system. A deviation from this universal behaviour is seen as a clear indication of the flow.
description: Revtex file
GRB 991216 Joins the Jet Set: Discovery and Monitoring of its Optical Afterglow
Creators: name: Halpern, J. P.
name: Uglesich, R.
name: Mirabal, N.
name: Kassin, S.
name: Thorstensen, J.
name: Keel, W. C.
name: Diercks, A.
name: Bloom, J. S.
name: Harrison, F.
name: Mattox, J.
name: Eracleous, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The optical light curve of the energetic gamma-ray burst GRB 991216 is consistent with jet-like behavior in which a power-law decay steepens from t**(-1.22 +/- 0.04) at early times to t**(-1.53 +/- 0.05) in a gradual transition at around 2 d. The derivation of the late-time decay slope takes into account the constant contribution of a host or intervening galaxy which was measured 110 d after the event at R = 24.56 +/- 0.14, although the light curve deviates from a single power law whether or not a constant term is included. The early-time spectral energy distribution of the afterglow can be described as F_nu ~ nu**(-0.74 +/- 0.05) or flatter between optical and X-ray, which, together with the slow initial decay, is characteristic of standard adiabatic evolution in a uniformly dense medium. Assuming that a reported absorption-line redshift of 1.02 is correct, the apparent isotropic energy of 6.7 x 10**53 erg is reduced by a factor of ~ 200 in the jet model, and the initial half-opening angle is ~ 6 deg. GRB 991216 is the third good example of a jet-like afterglow (following GRB 990123 and GRB 990510), supporting a trend in which the apparently most energetic gamma-ray events have the narrowest collimation and a uniform ISM environment. This, plus the absence of evidence for supernovae associated with jet-like afterglows, suggests that these events may originate from a progenitor in which angular momentum plays an important role but a massive stellar envelope or wind does not, e.g., the coalescence of a compact binary.
description: 19 pages, accepted by The Astrophysical Journal
Agricultural extension guideline after land development in unsuitable area for rice farming, Chorakhe Mak subdistrict, Prakhon Chai district, Buri Ram province
Creators: name: Apichai Katasila And Yos Borisutdhi
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: land development
agricultural extension and development
farmland modification
unsuitable area for rice farming

description: Khon Kaen Agriculture Journal, 52, 3, 562-573
The Transcendental Universe: Scale Invariance from Elementary Particles to Cosmic Structures
Creators: name: Needham, Eric
Publisher: name: Zenodo
Year: 2025
Subjects: Transcendental Universe
T-Wave
Mass emergence
Particle mass scaling
Quantum-to-cosmic scaling
Pi and Phi relationship
Golden ratio physics
Cosmological structure
Fundamental constants
Dark matter prediction
Unified mass spectrum
Vacuum emergence
Scale invariance
Astrophysical mass distribution
Self-similar universe

description: The Transcendental Universe: Scale Invariance from Elementary Particles to Cosmic Structures

This paper presents evidence for a mathematical relationship governing mass distribution across approximately 60 orders of magnitude, from elementary particles to cosmic structures. Through rigorous statistical analysis, we demonstrate that a modified power law incorporating the transcendental numbers π (pi) and φ (phi, the golden ratio) accurately describes mass hierarchies in both quantum and astronomical domains.

Our model successfully predicts the masses of fundamental particles (electron, muon, tau, quarks) with mean deviation under 5% and extends to stellar and galactic objects with comparable accuracy. The mathematical framework is based on the equation:

M(g) = M₀·exp(β·f(g,α,φ))

Where M₀ is a reference mass, β is a dimensionless scaling parameter, and f(g,α,φ) is a scale-invariant function incorporating the fine structure constant α and golden ratio φ.

The results are fully reproducible using the included Python script (transcendental-universe-python.py), which implements the mathematical model, validates against observed mass data, and generates publication-quality visualizations.

This work suggests deeper connections between quantum and cosmic scales than previously recognized, potentially offering new insights into longstanding problems including dark matter composition, mass quantization, and the generation of physical constants. Statistical validation through Monte Carlo methods confirms that these patterns are statistically significant and unlikely to occur by chance.

The paper includes comprehensive mathematical details, error analysis, alternative model comparisons, and specific testable predictions for future experiments in both particle physics and astronomy.
Rethinking Journal classification: Rethinking Journal  classification in the twenty-first century in the interests of a  higher quantum of scientific output and a more globalized  scientific output
Creators: name: Mandavilli
name: Sujay Rao Mandavilli
Publisher: name: Zenodo
Year: 2024

description: In this paper, we challenge Jeffrey Beall’s still dominant in the psyche approach to journal classification and some other ill-conceived approaches to journal classification, and attempt to show why such reductionist views are harmful to the healthy growth of science. While scientific fraud in any form must be horsewhipped and must not be exonerated or absolved at any cost and under any circumstances, journal classification and all other attendant issues and factors impacting and affecting science and healthy scientific progress must be taken in all the seriousness they deserve and merit, and must be assessed holistically and comprehensively. The scholars’ and the researchers’ point of view must also be taken into account and consideration at all times, and they must be asked to provide a reasonable and an elaborate justification and validation for all their actions including justifications for their publications in less prominent or less prestigious journals. We also propose an alternative approach to journal classification and ranking, but as no one researcher may be able to think through all the factors impacting and affecting the issue comprehensively enough, we invite other interested and concerned scholars, authors, scientists, researchers and educators to contribute more meaningfully to the benefit of the entire process.
Needs for the extension of management of medium capacity level community enterprise in Maha Sarakham Province
Creators: name: Waranya Phonseema And Arunee Promkhambut
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: needs for extension
community enterprises
operational status
capacity development of community enterprises
management knowledge

description: Khon Kaen Agriculture Journal, 52, 3, 574-587
Bosonization of non-relativistic fermions on a circle: Tomonaga's problem revisited
Creators: name: Dhar, Avinash
name: Mandal, Gautam
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use the recently developed tools for an exact bosonization of a finite number $N$ of non-relativistic fermions to discuss the classic Tomonaga problem. In the case of noninteracting fermions, the bosonized hamiltonian naturally splits into an O$(N)$ piece and an O$(1)$ piece. We show that in the large-N and low-energy limit, the O$(N)$ piece in the hamiltonian describes a massless relativistic boson, while the O$(1)$ piece gives rise to cubic self-interactions of the boson. At finite $N$ and high energies, the low-energy effective description breaks down and the exact bosonized hamiltonian must be used. We also comment on the connection between the Tomonaga problem and pure Yang-Mills theory on a cylinder. In the dual context of baby universes and multiple black holes in string theory, we point out that the O$(N)$ piece in our bosonized hamiltonian provides a simple understanding of the origin of two different kinds of nonperturbative O$(e^{-N})$ corrections to the black hole partition function.
description: latex, 28 pages, 5 epsf figures
Competition between d-wave superconductivity and antiferromagnetism in the 2D Hubbard model
Creators: name: Capone, M.
name: Kotliar, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the competition of antiferromagnetism and d-wave superconductivity at zero-temperature in the two-dimensional Hubbard model using Cellular Dynamical Mean Field Theory. The interplay between the two phases depends strongly on the strength of the correlation. At strong coupling ($ U \ge 8t$) the two phases do not mix, and a first-order transition takes place as a function of doping between two pure phases. At weak-coupling ($U \le 8t$) the two order parameters coexist within the same solution in a range of doping and the system smoothly evolves from the antiferromagnet to the superconductor. When the transition between the superconducting and the antiferromagetic phases is of the first-order, it is accompanied by a phase separation.
description: 4 pages, 3 figures
title:  Investigation of Eddy Population and Motion in the Southern International Ice Patrol Operations Area (40Â°-47Â°N by 40Â°-55Â°W)
Creators: name: Williams, Frank J.
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 1985

description: A study of the eddy population in the Newfoundland Basin region over the period from November 1981 to December 1984 was conducted. The study was undertaken to demonstrate the importance and basic character of eddy motion in the area patrolled by the International Ice Patrol. This is a descriptive study and no rigorous mathematical solutions are attempted. Data was collected on the number of eddies in the area, their average duration and size, formation, migration and deterioration patterns and rotational velocity. Satellite infrared imagery maintained by National Weather Service and Naval Eastern Oceanographic Center, Canadian Forces METOC Center sea surface temperature data and Tiros Ocean Drifter buoys and Side Looking Airborne Radar imagery maintained by the International Ice Patrol formed the basis for the investigation. This study indicates that eddies are ubiquitous in the area and that they are concentrated in the areas around the Newfoundland Ridge and the Seamounts. They drift to the west after formation. The Labrador Current generates eddies as well as the North Atlantic Current. The characteristics of the average eddy found in the area are presented.
Anisotropic-hydrodynamics approach to a quark-gluon fluid mixture
Creators: name: Florkowski, Wojciech
name: Maksymiuk, Ewa
name: Ryblewski, Radoslaw
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Anisotropic-hydrodynamics framework is used to describe a mixture of quark and gluon fluids. The effects of quantum statistics, finite quark mass, and finite baryon number density are taken into account. The results of anisotropic hydrodynamics are compared with exact solutions of the coupled kinetic equations for quarks and gluons in the relaxation time approximation. The overall very good agreement between the hydrodynamic and kinetic-theory results is found.
description: 21 pages, 3 figures. arXiv admin note: text overlap with arXiv:1710.07095
Do Stock Prices Follow Random Walks: An Analysis of the Tokyo Stock Exchange
Creators: name: Shastri, Karen A.
name: Shastri, Kuldeep
Publisher: name: Carnegie Mellon University
Year: 1994
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: The purpose of this study is to evaluate the random walk hypothesis in the context of stocks traded on the Tokyo Stock Exchange (TSE). Using a volatility based specification test developed by Lo and McKinlay (1988), we conclude that the stock prices for small firms do not follow a random walk. To determine if this deviation from random walks is associated with long-range dependence, we estimate and analyze the modified "range over standard deviation" statistic constructed by Lo (1991). The results of this analysis suggest that short-term memory is most likely the reason for the observed structure of returns.
The Transcendental Universe: As Above, So Below
Creators: name: Needham, Eric
Publisher: name: Zenodo
Year: 2025
Subjects: Transcendental Universe
T-Wave
Mass emergence
Particle mass scaling
Quantum-to-cosmic scaling
Pi and Phi relationship
Golden ratio physics
Cosmological structure
Fundamental constants
Dark matter prediction
Unified mass spectrum
Vacuum emergence
Scale invariance
Astrophysical mass distribution
Self-similar universe

description: This version has been updated - please refer to the latest version

 

This paper, "The Transcendental Universe: As Above, So Below", presents the discovery that the mass distribution of fundamental particles and cosmic structures follows a single transcendental scaling law based on the mathematical relationship between π (pi) and φ (phi, the golden ratio). This pattern, termed the Transcendental Wave (T-Wave), extends continuously across over 60 orders of magnitude, from subatomic particles such as the electron, muon, and tau, to stellar objects including white dwarfs, neutron stars, and black holes.

The results are fully reproducible using the included Python script (transcendental-universe-code.py), which calculates the critical scaling constant, predicts mass distributions, and generates corresponding validation plots. No free parameters were introduced to force the alignment; the predictions emerge naturally from the transcendental framework.

This work unifies the quantum and cosmic domains, demonstrating that the same emergence principle governs structures from the vacuum fluctuations of particles to the formation of galaxies. It provides a new mathematical foundation for understanding mass, emergence, and cosmic architecture.
title: Commission d'Instruction de la Cour de justice de la République, "Arrêt portant renvoi devant la Cour de justice de la République : Prononcé au siège de la Cour de justice de la République le 17 juillet 1998"
Creators: name: Leibowitch, Jacques
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Faits, p. 188-203.
description: Source: http://www.calames.abes.fr/pub/ms/Calames-20193111233429226
Antikaon production in nucleon-nucleon reactions near threshold
Creators: name: Sibirtsev, A.
name: Cassing, W.
name: Ko, C. M.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The antikaon production cross section from nucleon-nucleon reactions near threshold is studied in a meson exchange model. We include both pion and kaon exchange, but neglect the interference between the amplitudes. In case of pion exchange the antikaon production cross section can be expressed in terms of the antikaon production cross section from a pion-nucleon interaction, which we take from the experimental data if available. Otherwise, a $K^*$-resonance exchange model is introduced to relate the different reaction cross sections. In case of kaon exchange the antikaon production cross section is related to the elastic $KN$ and $\bar KN$ cross sections, which are again taken from experimental measurements. We find that the one-meson exchange model gives a satisfactory fit to the available data for the $NN\to NNK\bar K$ cross section at high energies. We compare our predictions for the cross section near threshold with an earlier empirical parameterization and that from phase space models.
description: 16 pages, LaTeX, 5 postscript figures included, submitted to Z. Phys. A
Optical properties of spin coated Cu doped ZnO nanocomposite films
Creators: name: Samarasekara, P.
name: Wijesinghe, Udumbara
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Spin coating technique was used to synthesize pure ZnO and Cu doped ZnO films on amorphous and conducting glass substrates. The doped amount of Cu in ZnO was varied up to 5% in atomic percentage. Speed of spin coating system, coating time, initial chemical solution and annealing conditions were varied to optimize the properties of samples. Transmittance of samples was measured for ZnO doped with 1, 2, 3, 4 and 5% of Cu. Absorbance, reflectance and refractive index were derived from the measured transmittance. Film thickness of each film was calculated using the graphs of refractive index versus wavelength. Film thickness varies in a random manner depending on the amount of ZnO or Cu doped ZnO solutions spread on the substrate. The energy gap of each film was calculated using the graph of square of absorption coefficient time photon energy versus photon energy. The calculated energy gap values of Cu doped ZnO film samples decrease with the Cu concentration in ZnO. This means that the conductivity of ZnO can be increased by adding a trace amount of conducting material such as Cu.
description: 14 pages, 5 figures, 2 tables
Quantum Field Theory: Where We Are
Creators: name: Fredenhagen, Klaus
name: Rehren, Karl-Henning
name: Seiler, Erhard
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We comment on the present status, the concepts and their limitations, and the successes and open problems of the various approaches to a relativistic quantum theory of elementary particles, with a hindsight to questions concerning quantum gravity and string theory.
description: To appear in: An Assessment of Current Paradigms in the Physics of Fundamental Phenomena, to be published by Springer Verlag (2006)
Farmers' needs for extension on Phulae pineapple production in Mueang District, Chiang Rai Province
Creators: name: Wimonsiri Hongkham, Suraphol Sreshthaputra
Publisher: name: Faculty of Agriculture
Year: 2024
Subjects: needs for extension
Phulae pineapple
agricultural extension methods

description: Khon Kaen Agriculture Journal, 52, 3, 588-599
Do Spreadsheet Errors Lead to Bad Decisions: Perspectives of Executives and Senior Managers
Creators: name: Caulkins, Jonathan P.
name: Morrison, Erika Layne
name: Weidemann, Timothy
Publisher: name: Carnegie Mellon University
Year: 2008
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 160510 Public Policy
subject: FOS: Political science

description: Spreadsheets are commonly used and commonly flawed, but it is not clear how often spreadsheet errors lead to bad decisions. We interviewed 45 executives and senior managers / analysts in the private, public, and non-profit sectors about their experiences with spreadsheet quality control and with errors affecting decision making. Almost all said spreadsheet errors are common. Quality control was usually informal and applied to the analysis and/or decision, not just the spreadsheet per se. Most respondents could cite instances of errors directly leading to bad decisions, but opinions differ as to whether the consequences of spreadsheet errors are severe. Some thought any big errors would be so obvious as to be caught by even informal review. Others suggest that spreadsheets inform but do not make decisions, so errors do not necessarily lead one for one to bad decisions. Still, many respondents believed spreadsheet errors were a significant problem and that more formal spreadsheet quality control could be beneficial.
Feedback stabilization of magnetohydrodynamic equations
Creators: name: Lefter, Cătălin
Publisher: name: Weierstrass Institute
Year: 2006
Subjects: subject: Magnetohydrodynamic equations
subject: feedback stabilization
subject: Carleman estimates
subject: 93D15
subject: 35Q35
subject: 76W05
subject: 35Q30
subject: 35Q60
subject: 93B07

description: We prove the local exponential stabilizability for the MHD system, with internally distributed feedback controllers. These controllers take values in a finite dimensional space which is the unstable manifold of the elliptic part of the linearized operator. The stabilization of the linear system is derived using a unique continuation property for systems of parabolic and elliptic equations, as well as the equivalence between controllability and feedback stabilizability in the case of finite dimensional systems. The feedback that stabilizes the linearized system is also stabilizing the nonlinear system in the domain of a fractional power of the elliptic operator.
Doña Juana de Acebedo: Digital edition
Creators: name: Leblanc Elina
Publisher: name: Zenodo
Year: 2022
Subjects: Spanish literature
Digital edition
XML-TEI

description: Digital edition of a Spanish pliego de cordel, published by the Andalusian printer José María Moreno (19th c.). It contains the XML-TEI file of the edition, as well as the files that led to this edition, i.e. the digital facsimiles (raw and retouched), and the transcription produced by the OCR tool Transkribus (PAGE-XML). This digital edition is a part of the research project Desenrollando el cordel / Untangling the cordel / Démêler le cordel (2020-2022), led by the professor Constance Carta at the University of Geneva and supported by the philanthropic Sandoz-Monique de Meuron Family Foundation.
Medium-resolution Spectroscopy of Red Giant Branch Stars in $ω$ Centauri
Creators: name: An, Deokkeun
name: Lee, Young Sun
name: Jung, Jae In
name: Rey, Soo-Chang
name: Rhee, Jaehyon
name: Lee, Jae-Woo
name: Lee, Young-Wook
name: Joe, Young Hoon
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present [Fe/H] and [Ca/Fe] of $\sim600$ red giant branch (RGB) members of the globular cluster $ω$ Centauri. We collect medium-resolution ($R\sim2000$) spectra using the Blanco 4 m telescope at the Cerro Tololo Inter-American Observatory equipped with Hydra, the fiber-fed multi-object spectrograph. We demonstrate that blending of stellar light in optical fibers severely limits the accuracy of spectroscopic parameters in the crowded central region of the cluster. When photometric temperatures are taken in the spectroscopic analysis, our kinematically selected cluster members, excluding those that are strongly affected by flux from neighboring stars, include relatively fewer stars at intermediate metallicity ([Fe/H]$\sim-1.5$) than seen in the previous high-resolution survey for brighter giants in Johnson & Pilachowski. As opposed to the trend of increasing [Ca/Fe] with [Fe/H] found by those authors, our [Ca/Fe] estimates, based on Ca II H & K measurements, show essentially the same mean [Ca/Fe] for most of the metal-poor and metal-intermediate populations in this cluster, suggesting that mass- or metallicity-dependent SN II yields may not be necessary in their proposed chemical evolution scenario. Metal-rich cluster members in our sample show a large spread in [Ca/Fe], and do not exhibit a clear bimodal distribution in [Ca/Fe]. We also do not find convincing evidence for a radial metallicity gradient among RGB stars in $ω$ Centauri.
description: 10 pages, 10 figures. Astronomical Journal, in press
title: Applying Nature’s Solutions to Architectural Problems
title: Applying Nature’s Solutions
titleType: AlternativeTitle
Creators: name: Yowell, Jay
Publisher: name: University of Massachusetts Amherst
Year: 2019
Subjects: subject: Biomimicry
subject: Biomimetic
subject: Design
subject: Carbon Dioxide
subject: Building Envelope
subject: Architectural Technology
subject: Architecture
subject: FOS: Civil engineering

description: Nature has inspired architecture for millennia and recent discoveries allow designers to understand the wealth of biological information further. The architectural profession is at a critical point in history with regards to reducing its impact on the environment. To truly minimize a building’s impact it needs to interact more holistically with its surroundings. The lessons learned from natural systems can be applied to architecture to lessen its environmental impact, and this is a critical point to ask: Will architects utilize construction technology as well as advanced scientific knowledge to create an architecture that behaves like nature? Imagine a building that can convert carbon dioxide to oxygen and during the process efficiently converting sunlight into energy. The Architecture + Biomimicry course was set up so students could specifically address this question and explore these possibilities. Research of literature and experts helped the students seek an answer to ‘What would nature do?’ This knowledge was then applied to an architectural solution that addressed the original challenge they selected. Work culminated in an exhibit and was attended by numerous faculty and students from cross-disciplinary fields (including engineering, interior design and sustainability). Discussions with these professors planted the seed for this course to expand and coordinate with their courses. This will lead to a new interdisciplinary approach to seeing and solving challenges in a new light. Students will learn to look beyond the forms in nature and understand the principles behind them in order to create effective solutions to environmental issues; for example carbon dioxide emissions. Which will require the construction industry to look beyond itself and look to nature with its array of plentiful, creative appropriate designs. Since buildings account for thirty-nine percent of carbon dioxide emissions in the United States, these designs provide crucial for architects to learn from.
A heat pump at a molecular scale controlled by a mechanical force
Creators: name: Nakagawa, Naoko
name: Komatsu, Teruhisa S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that a mesoscopic system such as Feynman's ratchet may operate as a heat pump, and clarify a underlying physical picture. We consider a system of a particle moving along an asymmetric periodic structure . When put into a contact with two distinct heat baths of equal temperature, the system transfers heat between two baths as the particle is dragged. We examine Onsager relation for the heat flow and the particle flow, and show that the reciprocity coefficient is a product of the characteristic heat and the diffusion constant of the particle. The characteristic heat is the heat transfer between the baths associated with a barrier-overcoming process. Because of the correlation between the heat flow and the particle flow, the system can work as a heat pump when the particle is dragged. This pump is particularly effective at molecular scales where the energy barrier is of the order of the thermal energy.
description: 7 pages, 5 figures; revised