cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Statistical study of the conductance and shot noise in open quantum-chaotic cavities: Contribution from whispering gallery modes
Creators: name: Bulgakov, Evgeny N.
name: Gopar, Victor A.
name: Mello, Pier A.
name: Rotter, Ingrid
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the past, a maximum-entropy model was introduced and applied to the study of statistical scattering by chaotic cavities, when short paths may play an important role in the scattering process. In particular, the validity of the model was investigated in relation with the statistical properties of the conductance in open chaotic cavities. In this article we investigate further the validity of the maximum-entropy model, by comparing the theoretical predictions with the results of computer simulations, in which the Schroedinger equation is solved numerically inside the cavity for one and two open channels in the leads; we analyze, in addition to the conductance, the zero-frequency limit of the shot-noise power spectrum. We also obtain theoretical results for the ensemble average of this last quantity, for the orthogonal and unitary cases of the circular ensemble and an arbitrary number of channels. Generally speaking, the agreement between theory and numerics is good. In some of the cavities that we study, short paths consist of whispering gallery modes, which were excluded in previous studies. These cavities turn out to be all the more interesting, as it is in relation with them that we found certain systematic discrepancies in the comparison with theory. We give evidence that it is the lack of stationarity inside the energy interval that is analyzed, and hence the lack of ergodicity that gives rise to the discrepancies. Indeed, the agreement between theory and numerical simulations is improved when the energy interval is reduced to a point and the statistics is then collected over an ensemble. It thus appears that the maximum-entropy model is valid beyond the domain where it was originally derived. An understanding of this situation is still lacking at the present moment.
description: Revised version, minor modifications, 28 pages, 7 figures
Kenneth W. Whistler Papers on California Indian Languages
Creators: name: Freeman, Joe
name: Lorenzo, Harry
name: McDaniel, Oscar
name: Moore, Sharky
name: Regalado, Jennie
name: Whistler, Kenneth W.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015

description: The Papers primarily document Whistler's field work on Patwin and Nomlaki. Whistler's Patwin consultants included Harry Lorenzo (Rumsey Hill Patwin, Brooks, California), Oscar McDaniel (Kabalwen Patwin, Stonyford, California) and Jennie Regalado (Colusa River Patwin, Colusa, California). Whistler's Nomlaki consultants included Joe Freeman (Paskenta Hill Nomlaki, Los Molinos, California). In addition to Whistler's field notes, the Papers contain drafts of a paper on Pomo prehistory by Whistler and notes on Yokuts reconstructions.
Reconciling low and high redshift GRB luminosity correlations
Creators: name: Huang, Lu
name: Huang, Zhiqi
name: Luo, Xiaolin
name: He, Xinbo
name: Fang, Yuhong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: J.2
subject: 83F05

description: The correlation between the peak spectra energy ($E_p$) and the equivalent isotropic energy ($E_{\rm iso}$) of long gamma-ray bursts (GRBs), the so-called Amati relation, is often used to constrain the high-redshift Hubble diagram. Assuming Lambda cold dark matter ($Λ$CDM) cosmology, Wang et al. found a $\gtrsim 3σ$ tension in the data-calibrated Amati coefficients between low- and high-redshift GRB samples. To reduce the impact of fiducial cosmology, we use the Parameterization based on cosmic Age (PAge), an almost model-independent framework to trace the cosmological expansion history. We find that the low- and high-redshift tension in Amati coefficients stays almost the same for the broad class of models covered by PAge, indicating that the cosmological assumption is not the dominant driver of the redshift evolution of GRB luminosity correlation. Next, we analyze the selection effect due to flux limits in observations. We find Amati relation evolves much more significantly across energy scales of $E_{\rm iso}$. We debias the GRB data by selectively discarding samples to match low-$z$ and high-$z$ $E_{\rm iso}$ distributions. After debiasing, the Amati coefficients agree well between low-$z$ and high-$z$ data groups, whereas the evidence of $E_{\rm iso}$-dependence of Amati relation remains to be strong. Thus, the redshift evolution of GRB luminosity correlation can be fully interpreted as a selection bias, and does not imply cosmological evolution of GRBs.
description: 5 pages, 4 figures; significant modification
A Class of Best-Response Potential Games
Creators: name: Dragone, Davide
name: Lambertini, Luca
name: Palestini, Arsen
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: SECS-P/01 Economia politica

description: We identify a class of noncooperative games in continuous strategies which are best-response potential games. We identify the conditions for the existence of a best-response potential function and characterize its construction, describing then the key properties of the equilibrium. The theoretical analysis is accompanied by applications to oligopoly and monetary policy games.
Rule of Law, Institutional Quality and Information
Creators: name: Bruno, Randolph Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: SECS-P/01 Economia politica

description: The focus of this paper is the analysis of the persistent lawlessness attitude observed in some transition and developing countries where an overall increase in the quality of institutions is recorded. The mechanism of information diffusion on institutional quality is explored using a model where the state confronts a continuum of agents prone to either strip assets or to invest. The model predicts that high uncertainty and potential sunk costs in a situation of rule of law enforcement push the economy towards anarchy, a Pareto-dominated equilibrium. Viceversa, if the assets' value and the cost of asset-stripping are high, this is instrumental to a rule of law enforcement, a Pareto-dominant equilibrium. High institutional quality can increase the likelihood of rule of law enforcement if there is enough information about the strength of institutions. On the other hand, if good institutions and good information about institutions do not come together, there is scope for the puzzled co-existence of advancement in reforms and poor property rights protection.
Conformationally controlled reactions of unsaturated macrocyclic lactones and keto lactones
Creators: name: Fenster, Erik
Publisher: name: University of British Columbia
Year: 2009

description: As part of a study of the chemistry of macrocyclic compounds in our laboratory, the 14-membered unsaturated lactones 29 and 30 were synthesized with high stereoselectivity (>16:1 EIZ) via the ring closing olefin metathesis (RCM) reaction of the open chain diene esters. The configuration of the double bond in these unsaturated lactones was determined by 1H homonuclear decoupling NMR experiments. Equilibrium studies demonstrated that the RCM reaction proceeds under thermodynamic control in the cases of 29 and 30. The keto lactones 67 and 68 were synthesized via the hydroboration of 30 followed by TPAP oxidation of the hydroxy lactone products. The conformationally controlled reactions of the macrocyclic lactones 29, 30, 67 and 68 were investigated. Treatment of the unsaturated lactone 29 with borane tetrahydrofuran complex, disiamylborane and 9BBN led to the formation of the hydroxy lactones 47 and 48 in a 1:1 regioisomeric ratio. Treatment of the unsaturated lactone 30 with the same hydroborating reagents led to the formation of the hydroxy lactones 51, 52, 53 and 54 in a 1:1 regioisomeric ratio but with good 7r-face selectivity (>7:1 using 9BBN). The epoxidation of 30 using MCPBA and methyl(trifluoromethyl)dioxirane, leading to epoxides 63 and 64 also showed moderate 7t-face selectivity (>3:1 using MCPBA at -78 °C). Treatment of keto lactones 67 and 68 with NaBH4 and K-Selectride under a variety of reaction conditions led to the formation of hydroxy lactones 52, 53 and 51, 54, respectively. The hydroxy lactones were obtained in good stereoselectivity (>10:1 using K-Selectride at -78 °C) in the case of 67, and in low stereoselectivity (1:1.5 using K-Selectride at -78 °C) in the case of 68. In general, the stereoselectivity exhibited in the reactions of these macrocyclic lactones could be rationalized from the conformational analysis of the starting materials or the products. The relative stereochemistry of the stereogenic centers within the compounds synthesized during the course of the project were successfully assigned with the use of chemical correlations and Xray analysis.
Real K3 surfaces with non-symplectic involution and applications. II
Creators: name: Nikulin, Viacheslav V.
name: Saito, Sachiko
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14H45, 14J26, 14J28, 14P25

description: We consider real forms of relatively minimal rational surfaces F_m. Connected components of moduli of real non-singular curves in |-2K_{F_m}| had been classified recently for m=0, 1, 4 in math.AG/0312396. Applying similar methods, here we fill the gap for m=2 and m=3 to complete similar classification for any 0\le m\le 4 when |-2K_{F_m}| is reduced. The case of F_2 is especially remarkable and classical (quadratic cone in P^3). As an application, we finished classification of connected components of moduli of real hyper-elliptically polarized K3 surfaces and their deformations to real polarized K3 surfaces started in math.AG/0312396, math.AG/0507197. This could be important in some questions because real hyper-elliptically polarized K3 surfaces can be constructed explicitly.
description: 22 pages, 6 figures
The Gender Earnings Gap inside a Russian Firm: First Evidence from Personnel Data - 1997 to 2002
Creators: name: Dohmen, Thomas
name: Lehmann, Hartmut
name: Zaiceva, Anzelika
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: SECS-P/01 Economia politica

description: Using unique personnel data from one Russian firm for the years 1997 to 2002 we study the size, development and determinants of the gender earnings gap in an internal labor market during late transition. The gap is sizable but declines strongly over the entire period. Gender earnings differentials are largest for production workers who constitute the largest employee group in the firm. Various decompositions show that these differentials and their dynamics remain largely unexplained by observable characteristics at the mean and across the wage distribution. Our analysis also reveals that the earnings differentials for production workers largely stem from job assignment, as women are predominately assigned to lower paid jobs. Earnings gaps within job levels are small and almost fully explained by observed characteristics.
Examining the end of inflation with primordial black holes mass distribution and gravitational waves
Creators: name: Ashoorioon, Amjad
name: Rostami, Abasalt
name: Firouzjaee, Javad T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explicitly construct a double-field inflationary model, which satisfies the latest Planck constraints at the cosmic microwave background (CMB) scales and produces the whole dark matter energy density as primordial black holes (PBHs), in the mass range $10^{-17}~M_{\odot}\lesssim M_{{}_{\rm PBH}}\lesssim 10^{-13}~M_{\odot}$. The PBHs can be produced after the end of slow-roll inflation from the bubbles of true vacuum that nucleate during the course of inflation. Obtaining PBHs in this mass range enforces the scale of inflation to be extremely low, $10^{-7} \lesssim H \lesssim 10^{-3} ~{\rm GeV}$, which makes the efforts to observe gravitational waves at the CMB scales futile, although it is high enough to allow for a successful big bang nucleosynthesis. We will show that the shape of the mass distribution of the PBHs is dependent on how inflation ends and the Universe settles from the metastable direction to the true one. End of inflation can also be probed by examining the gravitational waves spectrum. In particular, we show that if exit from the rolling metastable direction to the true vacuum of the potential happens through a first-order phase transition after the end of slow-roll inflation, it leaves behind a stochastic gravitational wave background (SGWB), which is potentially observable by the Laser Interferometer Space Antenna. Examining the mass distribution of PBHs and possible SGWB from the end of inflation, we may be able to gain invaluable information about the end of inflation.
description: v1: 28 pages, 7 figures; v2: matched the PRD version, 16 pages double column, the title changed as per the PRD referee's direction!
Gravitational Waves as a Probe of Globular Cluster Formation and Evolution
Creators: name: Romero-Shaw, Isobel M.
name: Kremer, Kyle
name: Lasky, Paul D.
name: Thrane, Eric
name: Samsing, Johan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Globular clusters are considered to be likely breeding grounds for compact binary mergers. In this paper, we demonstrate how the gravitational-wave signals produced by compact object mergers can act as tracers of globular cluster formation and evolution. Globular cluster formation is a long-standing mystery in astrophysics, with multiple competing theories describing when and how globular clusters formed. The limited sensitivity of electromagnetic telescopes inhibits our ability to directly observe globular cluster formation. However, with future audio-band detectors sensitive out to redshifts of $z \approx 50$ for GW150914-like signals, gravitational-wave astronomy will enable us to probe the Universe when the first globular clusters formed. We simulate a population of binary black hole mergers from theoretically-motivated globular cluster formation models, and construct redshift measurements consistent with the predicted accuracy of third-generation detectors. We show that we can locate the peak time of a cluster formation epoch during reionisation to within 0.05Gyr after one year of observations. The peak of a formation epoch that coincides with the Universal star formation rate can be measured to within 0.4Gyr-10.5Gyr after one year of observations, depending on the relative weighting of the model components.
Religious Attitudes and Home Bias
Creators: name: Reggiani, Carlo
name: Rossini, Gianpaolo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: SECS-P/02 Politica economica

description: Home bias affects trade in goods, services and financial assets. It is mostly generated by "natural" trade barriers. Among these dividers we may list many behavioral and sociological factors, such as status quo biases and a few kind of ‘embeddedness’. Unfortunately these factors are difficult to measure. An important part of ‘embeddedness’ may be related to religious attitudes. Is there any relation between economic home bias and religious attitudes at the individual tier? Our aim is to provide a first answer to this question, by going through the econometric analysis of data from a survey conducted among in 11 European universities.
Topology and Phase Transitions I. Preliminary Results
Creators: name: Franzosi, Roberto
name: Pettini, Marco
name: Spinelli, Lionel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 82B26; 82B03; 82B05; 58E05

description: In this first paper, we demonstrate a theorem that establishes a first step toward proving a necessary topological condition for the occurrence of first or second order phase transitions: we prove that the topology of certain submanifolds of configuration space must necessarily change at the phase transition point. The theorem applies to smooth, finite-range and confining potentials V bounded below, describing systems confined in finite regions of space with continuously varying coordinates. The relevant configuration space submanifolds are both the level sets {Σ_v := V_N^{-1} (v)}_{v \in R} of the potential function V_N and the configuration space submanifolds enclosed by the Σ_{v} defined by {M_v := V_N^{-1} ((-\infty,v])}_{v \in R}, which are labeled by the potential energy value v, and where N is the number of degrees of freedom. The proof of the theorem proceeds by showing that, under the assumption of diffeomorphicity of the equipotential hypersurfaces {Σ_v}_{v \in R}, as well as of the ${M_v}_{v \in R}, in an arbitrary interval of values for \vb=v/N, the Helmoltz free energy is uniformly convergent in N to its thermodynamic limit, at least within the class of twice differentiable functions, in the corresponding interval of temperature. This preliminary theorem is essential to prove another theorem - in paper II - which makes a stronger statement about the relevance of topology for phase transitions.
description: 35 pages. This is an improved version of math-ph/0305032. Added minor chances: Title, Abstract, Introduction
From the Lab to the Dorm Room: Metacognitive Awareness and Use of Spaced Study
Creators: name: Susser, Johnathan
Publisher: name: Maryland Shared Open Access Repository
Year: 2011

description: Julia Rogers Research Prize:Junior/ Senior Winner, 2011
description: Numerous laboratory studies have demonstrated the long-term memory benefits of studying material in multiple distributed sessions as opposed to one massed session, given an identical amount of overall study time (i.e., the spacing effect). The current study goes beyond the laboratory to investigate whether undergraduates know about the advantage of spaced study, to what extent they use it in their own studying, and what factors influence its utilization. Participants (n = 285) completed a web-based survey responding to questions about their study behaviors, metacognitive awareness of spacing, the factors that contribute to the distribution of their study time, and independent measures of metacognitive self-regulation and use of elaboration study strategies. Results indicate that participants are aware of the benefits of spaced study and use it more than massing when they study, but do not implement it frequently. Students also endorsed several factors as important in the decision to distribute their study time. Further, level of metacognitive self-regulation and use of elaboration techniques were associated with the tendency to space material. Additional research is needed to examine student study habits in a naturalistic setting, and to explore effective ways to encourage behavior change through motivational and teaching techniques.
description: Dr. Jennifer McCabe
NEW DATA ON THE EARLY JURASSIC BIODIVERSITY OF THE LOMBARDY BASIN (SOUTHERN ALPS, ITALY) AND THE EARLIEST RECORD SPHENODUS (CHONDRICHTHYES, NEOSELACHII)
Creators: name: JASELLI, LUCA
name: J. DUFFIN, CHRISTOPHER
Publisher: name: RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA
Year: 2021

description: At the beginning of the Jurassic, the initial stages of the rifting that preceded the opening of the Alpine Tethys led to the establishment of the Lombardy basin, characterized by a shallow water marine palaeoenvironment inhabited by highly diversified ecological communities. Macrofossil records from the whole Lower Jurassic succession of Lombardy are currently mostly confined to invertebrates. The earliest occurrence of marine vertebrates is from the Sinemurian Moltrasio Limestone of Osteno (Varese), subsequent to the Triassic/Jurassic boundary (TJB) post-crisis recovery. Here, we describe material from the Roncola section (Roncola San Bernardo, Bergamo) of the Sedrina Limestone (upper Hettangian), consisting of a dense accumulation of crinoid skeletal remains belonging to Balanocrinus ticinensis Hess, 2006. Among them are three isolated neoselachian teeth assigned to the genus Sphenodus Agassiz, 1843. This new discovery is significant and extends our knowledge of the biodiversity of the Lombardy basin Jurassic, mainly because these dental remains represent the earliest vertebrate macrofossils ever documented from this area after the Triassic/Jurassic boundary. Sphenodus (which ranges from the Sinemurian to the Danian) is a fairly ubiquitous Sinemurian neoselachian shark but this new record moves its First Appearance Datum (FAD) back to the Hettangian stage.
description: RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA , V. 127 N. 1 (2021)
A Large-$N$ Phase Transition in a Finite Lattice Gauge Theory
Creators: name: Brahma, Nirmalya
name: Krishnan, Chethan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We consider gauge theories of non-Abelian $finite$ groups, and discuss the 1+1 dimensional lattice gauge theory of the permutation group $S_N$ as an illustrative example. The partition function at finite $N$ can be written explicitly in a compact form using properties of $S_N$ conjugacy classes. A natural large-$N$ limit exists with a new 't Hooft coupling, $λ=g^2 \log N$. We identify a Gross-Witten-Wadia-like phase transition at infinite $N$, at $λ=2$. It is first order. An analogue of the string tension can be computed from the Wilson loop expectation value, and it jumps from zero to a finite value. We view this as a type of large-$N$ (de-)confinement transition. Our holographic motivations for considering such theories are briefly discussed.
description: 9 pp, double column, 1 plot, v2: references and minor comments, PRD version
Isorthoceras undefined-A
Creators: name: Kröger, Björn
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Orthocerida
Proteoceratidae
Isorthoceras
Isorthoceras undefined-A

description: Isorthoceras sp. A
Fig. 12A
Material examined
ESTONIA • 1 spec.; Sutlema quarry; Kõrgessaare Formation, Vormsi Regional Stage; GIT 878-128.
Description
The specimen is a ca 45 mm long fragment of parts of a mature body chamber and three phragmocone chambers with a circular conch cross section. The maximum diameter of the specimen is 16 mm at ca mid-length of the body chamber. The body chamber is at least 34 mm long and at its base 15 mm in diameter. At ca 15 mm from its base, the body chamber has a wide, shallow constriction occurs. The three preserved chambers of the phragmocone decrease in length from 4 mm to 3.2 mm, to 2 mm in adoral direction. The septal foramen is well-preserved at 3.7 mm from the conch margin, where the conch cross section is 15 mm in diameter (RSP = 0.27), and it has a diameter of 1.2 mm. The conch surface is apparently smooth, although fine details of the ornamentation are not preserved.
Remarks
This specimen can be related to I. heroyense (Strand, 1934), and I. angelini Kröger, 2013, with respect to the mature conch size, position of the siphuncle and general conch shape. However, because the nature of the conch surface is uncertain, a species level determination is impossible.
description: Published as part of Kröger, Björn, 2025, The Lyckholm acme of cephalopods - Review of the late Katian (Vormsi-Pirgu regional stages) Ordovician cephalopods of Estonia, pp. 1-169 in European Journal of Taxonomy 978 on pages 50-51, DOI: 10.5852/ejt.2025.978.2801, http://zenodo.org/record/14988376
Luminous Compact Blue Galaxies in Intermediate Redshift Galaxy Clusters: A Significant But Extreme Butcher-Oemler Population
Creators: name: Crawford, S. M.
name: Bershady, M. A.
name: Glenn, A. D.
name: Hoessel, J. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We identify a population of Luminous Compact Blue Galaxies (LCBGs) in two galaxy clusters: MS0451.6-0305 (z=0.54) and Cl1604+4304 (z=0.9). LCBGs are identified via photometric characteristics and photometric redshifts derived from broad and narrow band images taken with the WIYN telescope and the Hubble Space Telescope. We analyze their surface densities and clustering properties to find they compose a statistically significant portion (42% and 53%) of the Butcher-Oemler galaxies in both clusters, and their spatial distributions are best characterized by a shell model. The enhancement of the projected space-density of LCBGs with M_B
description: 10 Pages, 3 figures, accepted for publication in ApJ Letters
The Chernobyl disaster: Implications for the Soviet Union and glasnost
Creators: name: Hansen, Juliana
Publisher: name: Maryland Shared Open Access Repository
Year: 2011

description: Julia Rogers Research Prize: Junior/ Senior Winner, 2011
description: My research focused on the origins and development of the Soviet nuclear power industry, how the Soviet Union’s political climate in the 1980’s shaped the reaction to the Chernobyl nuclear disaster and how environmental and political policy shifted in the aftermath of the disaster. To explore this topic, I utilized primary sources such as government documents, speeches, and firsthand accounts. I used mostly secondary sources to discuss the history of the nuclear industry. I relied mainly on government documents to detail problems with infrastructure. I obtained these documents from a collection in Goucher’s library, Revelations from the Russian Archives: Documents in English Translation. This volume was very useful, since it contained several previously secret Soviet documents. By using the information in these documents, I was able to find out what information the government was holding back.
To write about the accident and its immediate aftermath, I relied heavily on another book I found in the Goucher library called Chernobyl: A Documentary Story, by Iurii Shcherbak. This is a collection of interviews with those who responded to the accident and workers and residents of Chernobyl and the nearby city of Prypyat. In the second section of my paper, I link these stories together with supplemental information received from other sources to piece together how citizens initially responded to the disaster.
This paper was great practice in taking copious notes, and then arranging those notes in a sensible way, which required editing of the research that I found. I also learned
how to pick the most compelling quotes to use, and how to weave these individual stories together to form an anecdotal account of an event whose legacy lives on in primary sources.
description: Erica Fraser
$κ$-Minkowski Spacetime Through Exotic "Oscillator"
Creators: name: Ghosh, Subir
name: Pal, Probir
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We have proposed a generally covariant non-relativistic particle model that can represent the $κ$-Minkowski noncommutative spacetime. The idea is similar in spirit to the noncommutative particle coordinates in the lowest Landau level. Physically our model yields a novel type of dynamical system, (termed here as Exotic "Oscillator"), that obeys a Harmonic Oscillator like equation of motion with a {\it{frequency}} that is proportional to the square root of {\it{energy}}. On the other hand, the phase diagram does not reveal a closed structure since there is a singularity in the momentum even though energy remains finite. The generally covariant form is related to a generalization of the Snyder algebra in a specific gauge and yields the $κ$-Minkowski spacetime after a redefinition of the variables. Symmetry considerations are also briefly discussed in the Hamiltonian formulation. Regarding continuous symmetry, the angular momentum acts properly as the generator of rotation. Interestingly, both the discrete symmetries, parity and time reversal, remain intact in the $κ$-Minkowski spacetime.
description: Revised and enlarged version, Section on symmetry properties included, Reference section and general background expanded, no changes in math. part and conclusions, to appear in Phys.Lett.B
Near-MDS codes from elliptic curves
Creators: name: Aguglia, Angela
name: Giuzzi, Luca
name: Sonnino, Angelo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 94B05, 51A05, 51E21

description: We provide a new construction of $[n,9,n-9]_q$ near-MDS codes arising from elliptic curves with $n$ ${\mathbb F}_q$-rational points. Furthermore we show that in some cases these codes cannot be extended to longer near-MDS codes.
description: post-review version
Comparison of 87Rb N-resonances for D1 and D2 transitions
Creators: name: Novikova, Irina
name: Phillips, David F.
name: Zibrov, Alexander S.
name: Walsworth, Ronald L.
name: Taichenachev, Alexksei V.
name: Yudin, Valeriy I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report an experimental comparison of three-photon-absorption resonances (known as "N-resonances") for the D_1 and D_2 optical transitions of thermal 87Rb vapor. We find that the D_2 N-resonance has better contrast, a broader linewidth, and a more symmetric lineshape than the D_1 N-resonance. Taken together, these factors imply superior performance for frequency standards operating on alkali D_2 N-resonances, in contrast to coherent population trapping (CPT) resonances for which the D_2 transition provides poorer frequency standard performance than the D_1 transition.
description: 3 pages, 4 figures
Tomographic reconstruction of quantum states in N spatial dimensions
Creators: name: Mouritzen, Anders S.
name: Molmer, Klaus
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Most quantum tomographic methods can only be used for one-dimensional problems. We show how to infer the quantum state of a non-relativistic N-dimensional harmonic oscillator system by simple inverse Radon transforms. The procedure is equally applicable to finding the joint quantum state of several distinguishable particles in different harmonic oscillator potentials. A requirement of the procedure is that the angular frequencies of the N harmonic potentials are incommensurable. We discuss what kind of information can be found if the requirement of incommensurability is not fulfilled and also under what conditions the state can be reconstructed from finite time measurements. As a further example of quantum state reconstruction in N dimensions we consider the two related cases of an N-dimensional free particle with periodic boundary conditions and a particle in an N-dimensional box, where we find a similar condition of incommensurability and finite recurrence time for the one-dimensional system.
description: 8 pages, 1 figure
The Rose: or Affection’s Gift for 1847: History, Culture and Society as Relating to the American Gift Book
Creators: name: Sedovic, Katherine
Publisher: name: Maryland Shared Open Access Repository
Year: 2011

description: Julia Rogers Research Prize: Margaret Guccione Prize Winner, 2011
description: For the final project in ART 382: The Art and History of the Book, I was required to write an essay based on original research I completed on a book from Goucher’s Special Collections and Archives. What intrigued me about the project was the fact that my chosen book would be one with no previous research. As an art history major, this project provided me with an opportunity to acquaint myself with the process of original research, and with the multiplicity of resources found in the Goucher College Library.
During the two months I spent researching The Rose: or Affection’s Gift for 1847, I utilized a variety of library resources. To begin with, my chosen book’s placement in Special Collections and Archives necessitated that I spend time there exploring my primary source; reading excerpts and examining everything from the engravings, paper type and type face, to the publication information, binding and cover. While working in Special Collections, I also discovered the wide range of reference materials kept there, including Bamber Gascoigne’s How to Identify Prints, a text that was instrumental in determining the type of illustrations in The Rose.
In addition to the resources in Special Collections and Archives, I also took advantage of the library’s more prevalent resources, including texts from the general collection, articles found on databases such as JSTOR, and books received through Interlibrary Loan, all of which provided me with a vast array of information regarding my topic of study; American gift books in the 1800’s.
Overall, the resources in Goucher’s library played an intrinsic role in shaping and developing both my preliminary research and final essay. Having access to such a
3
wide variety of sources proved instrumental to writing a comprehensive essay on a previously un-researched text, and also helped me to explore the many facets of original research, allowing me to develop a greater appreciation for the effort and perseverance required to complete such a project.
description: April Oettinger
Surface-electronic structure of La(0001) and Lu(0001)
Creators: name: Wegner, D.
name: Bauer, A.
name: Koroteev, Yu. M.
name: Bihlmayer, G.
name: Chulkov, E. V.
name: Echenique, P. M.
name: Kaindl, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Most spectroscopic methods for studying the electronic structure of metal surfaces have the disadvantage that either only occupied or only unoccupied states can be probed, and the signal is cut at the Fermi edge. This leads to significant uncertainties, when states are very close to the Fermi level. By performing low-temperature scanning tunneling spectroscopy and ab initio calculations, we study the surface-electronic structure of La(0001) and Lu(0001), and demonstrate that in this way detailed information on the surface-electronic structure very close to the Fermi energy can be derived with high accuracy.
description: 6 pages, 4 figures, 1 table submitted to PRB
DYSFUNCTIONS OF TELOMERES AS A GENETIC MARKER OF INTERSTITIAL LUNG DISEASES
Creators: name: Yakovleva, O.
name: Doroshkevych, I.
name: Zhamba, A.
name: Hoina-Kardasevich, O.
name: Shcherbeniuk, N.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2022
Subjects: telomeres
telomerase
genetic polymorphism
interstitial lung diseases

description: The aim of our study was to summarize information about the role of telomeres and telomerases in interna-tional scientific publications, at interstitial lung diseases, their pathogenetic and genetic background. The publica-tions about the relationship of genetic polymorphism of telomere and telomerase formation and their consequences for differential diagnosis and prognosis of interstitial lung diseases were studied. Among the variants of genetic mutations of telomeres, changes have been described: RTEL1 the regulator of telomere elongation helicase, PARN (poly A) specific RNase, NAF1 nuclear assembly factor ribonucleoprotein, DKC1 pseudouridine synthase dyskerin 1, TINF2 nuclear factor 2 interacting with TERF1. The relationship between age aspects and different variants of telomerase mutations has been shown: for example, with the TERT mutation, the prevalence of interstitial lung diseases after 60 years reached 60%, on the contrary, the TERC mutation carriage was associated with earlier (about 51 years) lung fibrosis, while it was associated with TERT for 58, RTEL1 for 60 and PARN for 65 years. Genetic polymorphism of telomere and telomerase formation in interstitial lung diseases can be used for the diagnosis and prognosis of these diseases. Genetic analysis may contribute to future perspective developments in pharmacological correction technologies.
Regular black holes in isothermal cavity
Creators: name: Tzikas, Athanasios G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the thermodynamic behavior of a static neutral regular (non-singular) black hole enclosed in a finite isothermal cavity. The cavity enclosure helps us investigate black hole systems in a canonical or a grand canonical ensemble. Here we demonstrate the derivation of the reduced action for the general metric of a regular black hole in a cavity by considering a canonical ensemble. The new expression of the action contains quantum corrections at short distances and concludes to the action of a singular black hole in a cavity at large distances. We apply this formalism to the noncommutative Schwarzschild black hole, in order to study the phase structure of the system. We conclude to a possible small/large stable regular black hole transition inside the cavity that exists neither at the system of a classical Schwarzschild black hole in a cavity, nor at the asymptotically flat regular black hole without the cavity. This phase transition seems to be similar with the liquid/gas transition of a Van der Waals gas.
description: 10 pages, 4 figures, version appeared in Physics Letters B
Multi-Lepton Events at H1 and Search for Doubly-Charged Higgs Bosons
Creators: name: Schoning, Andre
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Events with two or more leptons (electrons or muons) with high transverse momentum are measured in electron-proton collisions at HERA using the data sample collected in the period 1994-2005. Multi-lepton events at high transverse momenta are of special interest as these signature might reveal new physics beyond the Standard Model. An example is the single production of doubly-charged Higgs bosons $H^{\pm \pm}_{L,R}$, which couple to leptons of the $i^\prime$th and $j^\prime$th generation via Yukawa couplings $h^{L,R}_{ij}$. Results from a search for doubly-charged Higgs bosons in the decays into electrons, muons and taus are presented using data taken in the period 1994-2000. No evidence for doubly-charged Higgs production is found and we derive limits on the $h_{ee}^{L,R}$ and $h_{e μ}^{L,R}$ Yukawa couplings as a function of the $H^{\pm\pm}_{L,R}$ mass.
description: 4 pages, 3 figures, proceedings of the XIII International Workshop on Deep Inelastic Scattering - DIS 2005, Madison, Wisconsin, 2005
WESTERN COAL TRANSPORTATION RATES FOR MINNESOTA USERS
Creators: name: Fruin, Jerry E.
name: Crnkovich, Robert
name: Fruin, Jerry E.
name: Crnkovich, Robert
Publisher: name: Unknown
Year: 1978
Subjects: Resource /Energy Economics and Policy

description: The objectives of this paper are to summarize the existing rates that determine the cost of transporting coal into Minnesota, to define the areas where there are no existing coal transportation rates and to provide a methodology for estimating the cost of transporting coal from the major producing areas to Minnesota users.
HOMOAPORPHIN AND HOMOPROAPORPHIN BASES COLCHICUM AND MERENDERA
Creators: name: Alikulov R.
name: Atamuratova D.
name: Khaitov, B.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2022
Subjects: alkaloid
homoproaporphin
dihydrocrazyginone
luteidine
yolanthamine
regecolquine
trigamine
crokiamine

description: In a review article, the cast data obtained by the authors. The obtained homoproporphinic alkaloids for each compound are characterized and summarized. The structure, methods of preparation, physical and chemical prop-erties of individual compounds, as well as the form and quantities of distribution in plants are given. The aim of the study was to isolate individual active substances in pure form, to prove the structure and to establish the de-pendence of the spectral properties on the structure.
A Modular Curve of Level 9 and the Class Number One Problem
Creators: name: Baran, Burcu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G05; 11G15; 11R29

description: In this note we give an explicit parametrization of the modular curve associated to the normalizer of a non-split Cartan subgroup of level 9. We determine all integral points of this modular curve. As an application, we give an alternative solution to the class number one problem.
description: 18 pages
Robust Utility Maximization in a Multivariate Financial Market with Stochastic Drift
Creators: name: Sass, Jörn
name: Westphal, Dorothee
Publisher: name: arXiv
Year: 2020
Subjects: subject: Portfolio Management (q-fin.PM)
subject: FOS: Economics and business
subject: 91G10, 91B16, 93E20

description: We study a utility maximization problem in a financial market with a stochastic drift process, combining a worst-case approach with filtering techniques. Drift processes are difficult to estimate from asset prices, and at the same time optimal strategies in portfolio optimization problems depend crucially on the drift. We approach this problem by setting up a worst-case optimization problem with a time-dependent uncertainty set for the drift. Investors assume that the worst possible drift process with values in the uncertainty set will occur. This leads to local optimization problems, and the resulting optimal strategy needs to be updated continuously in time. We prove a minimax theorem for the local optimization problems and derive the optimal strategy. Further, we show how an ellipsoidal uncertainty set can be defined based on filtering techniques and demonstrate that investors need to choose a robust strategy to be able to profit from additional information.
description: 26 pages, 1 figure
The X(3872) boson: Molecule or charmonium
Creators: name: Suzuki, Mahiko
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It has been argued that the mystery boson X(3872) is a molecule state consisting of primarily D0-D0*bar + D0bar-D*0. In contrast, apparent puzzles and potential difficulties have been pointed out for the charmonium assignment of X(3872). We examine several aspects of these alternatives by semiquantitative methods since quantitatively accurate results are often hard to reach on them. We find that some of the observed properties of X(3872), in particualr, the binding and the production rates are incompatible with the molecule interpretation. Despite puzzles and obstacles, X(3872) may fit more likely to the excited triplet P_1 charmonium than to the molecule after mixing of cc-bar with DD*-bar +Dbar-D* is taken into account. One simple experimental test is pointed out for distinguishing between a charmonium and an isospin-mixed molecule in the neutral B decay.
description: A few sentences of comment are added. One minor rewording in the Introduction. Two trivial typos are corrected
IMPACT OF SARS COV-2 ON THE RESPIRATORY SYSTEM
Creators: name: Chaikina, K.
name: Nazarova, D.
name: Abramov, S.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2022
Subjects: SARS CoV-2
nasal cavity
trachea
lungs
alveoli
alveolocytes
olfactory epithelium

description: When the virus enters the human body through aerogenic entry, the first target that SARS CoV-2 strikes is the respiratory system. Getting inside the nasal cavity, the virus affects the olfactory epithelium, and leads to the appearance of the first symptoms of corona virus infection. With the accumulation and spread of the virus in the upper respiratory tract, and the impossibility of the human immune system to cope with the infection caused, the virus spreads throughout the body, affecting the lower respiratory tract, entering the lungs causing more serious consequences.
Leonard Talmy Papers on the Atsugewi Language
Creators: name: LaMarr, Selena
name: Webster, Miti
name: Talmy, Leonard
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015

description: The Papers document Talmy's research on the Atsugewi language, including field work and grammatical analysis. The Papers include field notes, vocabulary file slips, notes on grammar and photocopies of printed material about Atsugewi. Among Talmy's Atsugewi consultants were Holliday Brown, Hattie Christie, Francis [Hardin?], Selina LaMar, Miti Webster, and Efie Wilson.
Teleportation and spin squeezing utilizing multimode entanglement of light with atoms
Creators: name: Hammerer, K.
name: Polzik, E. S.
name: Cirac, J. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a protocol for the teleportation of the quantum state of a pulse of light onto the collective spin state of an atomic ensemble. The entangled state of light and atoms employed as a resource in this protocol is created by probing the collective atomic spin, Larmor precessing in an external magnetic field, off resonantly with a coherent pulse of light. We take here for the first time full account of the effects of Larmor precession and show that it gives rise to a qualitatively new type of multimode entangled state of light and atoms. The protocol is shown to be robust against the dominating sources of noise and can be implemented with an atomic ensemble at room temperature interacting with free space light. We also provide a scheme to perform the readout of the Larmor precessing spin state enabling the verification of successful teleportation as well as the creation of spin squeezing.
description: 11 pages, 5 figures
Testing the black-hole area law with GW150914
Creators: name: Isi, Maximiliano
name: Farr, Will M.
name: Giesler, Matthew
name: Scheel, Mark A.
name: Teukolsky, Saul A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present observational confirmation of Hawking's black-hole area theorem based on data from GW150914, finding agreement with the prediction with 97% (95%) probability when we model the ringdown including (excluding) overtones of the quadrupolar mode. We obtain this result from a new time-domain analysis of the pre- and postmerger data. We also confirm that the inspiral and ringdown portions of the signal are consistent with the same remnant mass and spin, in agreement with general relativity.
description: 3 pages, 3 figures (journal version)