cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electron trapping in graphene quantum dots with magnetic flux
Creators: name: Azar, Mohammed El
name: Bouhlal, Ahmed
name: Alhaidari, Abdulaziz D.
name: Jellal, Ahmed
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is known that the appearance of Klein tunneling in graphene makes it hard to keep or localize electrons in a graphene-based quantum dot (GQD). However, a magnetic field can be used to temporarily confine an electron that is traveling into a GQD. The electronic states investigated here are resonances with a finite trapping time, also referred to as quasi-bound states. By subjecting the GDQ to a magnetic flux, we study the scattering phenomenon and the Aharonov-Bohm effect on the lifetime of quasi-bound states existing in a GQD. We demonstrate that the trapping time increases with the magnetic flux sustaining the trapped states for a long time even after the flux is turned off. Furthermore, we discover that the probability density within the GQD is also clearly improved. We demonstrate that the trapping time of an electron inside a GQD can be successfully extended by adjusting the magnetic flux parameters.
description: 10 pages, 7 figures
Fluctuation relation in continuous-time random walks driven by an external field
Creators: name: Seki, Kazuhiko
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a fluctuation relation representing a nonequilibrium equality indicating that the ratio between the distribution of trajectories obtained by exchanging the initial and final positions is characterized by free energy differences for the duration of the trajectories. We examine the fluctuation relation for noninteracting charge carriers driven by an external electric field by using a continuous-time lattice random walk model with a general waiting-time distribution of transitions. The fluctuation relation is obtained regardless of the lattice structure factor or the form of the waiting-time distribution. However, the fluctuation relation is satisfied only after taking the continuum limit in the presence of a reflecting boundary. Moreover, in free space without boundary conditions, exchanging the initial and final positions is equivalent to exchanging the field (or drift) directions. However, we show that the exchanging field (or drift) directions is not relevant for studying the fluctuation relation under the reflecting boundary condition.
Processi di espansione di nanocompositi a base di PCL
Creators: name: Marrazzo, Carlo
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2007

description: Il presente lavoro di tesi si colloca nell’ambito dello studio del processo di espansione dei polimeri termoplastici. Il punto di partenza è rappresentato dall’analisi dei vari stadi che conducono alla formazione
di un espanso, partendo da una soluzione polimero-agente espandente, passando per la nucleazione e crescita delle celle e giungendo, infine, alla stabilizzazione della struttura cellulare. Questa analisi preventiva ha permesso di individuare i fattori termodinamici e le variabili di processo che influenzano i vari stadi dell’espansione. L’utilizzo di un sistema di espansione discontinuo realizzato per controllare in maniera indipendente le variabili di processo ha permesso di effettuare prove sperimentali di espansione i cui risultati, in termini di densità e di numerosità cellulare, sono stati messi in relazione alle variabili di processo. Le relazioni individuate sono state riportate in termini analitici e mediante rappresentazioni grafiche tridimensionali ed hanno fornito uno strumento di previsione utile per ottenere strutture espanse con caratteristiche controllate. Infine, considerando che la formazione di una struttura espansa è influenzata non solo dalle variabili di processo ma anche dalla eventuale presenza di agenti nucleanti all’interno della matrice polimerica, si è passati ad indagare il ruolo degli agenti nucleanti nei vari stadi del processo di espansione.
Lovelock Gravity at the Crossroads of Palatini and Metric Formulations
Creators: name: Exirifard, Q.
name: Sheikh-Jabbari, M. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider extensions of the Einstein-Hilbert Lagrangian to a general functional of metric and Riemann curvature tensor. A given such Lagrangian describes two different theories depending on considering connection and metric (Palatini formulation), or only the metric (metric formulation) as independent dynamical degrees of freedom. Equivalence of the Palatini and metric formulations at the level of equations of motion, which as we will argue is a manifestation of the Equivalence Principle, is the physical criterion that restricts form of the Lagrangians of modified gravity theories. We prove that within the class of modified gravity theories we consider, only the Lovelock gravity satisfies this requirement.
description: Revtex, 4 pp, no figures; v3: Presentation improved, a reference added
Trachysida aspera subsp. brevifrons
Creators: name: Webster, Reginald
name: McCoqrquodale, David
name: Majka, Christopher
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Trachysida
Trachysida aspera
Trachysida aspera brevifrons (howden, 1959)

description: Trachysida aspera brevifrons (Howden, 1959) Prince Edward Island: Queens Co., Mount Hebert, [in the 1920s], R. Mutch (1, UPEI).
description: Published as part of Webster, Reginald, McCoqrquodale, David & Majka, Christopher, 2009, New records of Cerambycidae (Coleoptera) for New Brunswick, Nova Scotia, and Prince Edward Island, Canada, pp. 285-308 in ZooKeys 22 (22) on page 295, DOI: 10.3897/zookeys.22.122, http://zenodo.org/record/576540
On the absence of a spiral magnetic order in Li2CuO2 with one-dimensional CuO2 ribbon chains
Creators: name: Xiang, H. J.
name: Lee, C.
name: Whangbo, M. -H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: On the basis of first principles density functional theory electronic structure calculations as well as classical spin analysis, we explored why the magnetic oxide Li2CuO2, consisting of CuO2 ribbon chains made up of edge-sharing CuO4 squares, does not exhibit a spiral-magnetic order. Our work shows that, due to the next-nearest-neighbor interchain interactions, the observed collinear magnetic structure becomes only slightly less stable than the spin-spiral ground state, and many states become nearly degenerate in energy with the observed collinear structure. This suggests that the collinear magnetic structure of Li2CuO2 is a consequence of order-by-disorder induced by next-nearest-neighbor interchain interactions.
Impact assessment framework
Creators: name: Passani, Antonella
name: Annelli Janssen
name: Hölscher, Katharina
Publisher: name: Zenodo
Year: 2021
Subjects: Impact assessment
citizen science
SDGs

description: This deliverable describes the ACTION impact assessment methodology, the co-design process followed for its development and how it will be applied to CS projects and to ACTION overall. The ACTION impact assessment methodology considers scientific, social, economic and political impacts; it links CS impacts to EU Sustainable Development Goals (SDGs) and considers also the potential contributions to MORRI indicators. Its aim is to support the ACTION consortium, but also CS managers and researchers working on the benefits of CS, by providing a multi-dimensional, flexible and adaptable framework to be used in their work. This framework is under usage at the time of writing as an internal tool for assessing ACTION’s pilots and will be regularly improved and updated in the next months of the project by taking on board feedback coming from its application. It is complementary with D6.2 which offers data gathering instruments to be used in the actual application of the methodology here described (accessible here: https://zenodo.org/record/3968460#.XyQRCB1S-u5 DOI 10.5281/zenodo.3968459). .
Recensioni
Creators: name: Puttilli, Matteo
name: Brogna, Marco
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2010

description: Semestrale di studi e ricerche di geografia, N. 2 (2010): La Cartografia storica da bene patrimoniale a strumento progettuale a cura di Elena Dai Prà
Statistical Mechanics of Steiner trees
Creators: name: Bayati, M.
name: Borgs, C.
name: Braunstein, A.
name: Chayes, J.
name: Ramezanpour, A.
name: Zecchina, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The Minimum Weight Steiner Tree (MST) is an important combinatorial optimization problem over networks that has applications in a wide range of fields. Here we discuss a general technique to translate the imposed global connectivity constrain into many local ones that can be analyzed with cavity equation techniques. This approach leads to a new optimization algorithm for MST and allows to analyze the statistical mechanics properties of MST on random graphs of various types.
Geografie urbane della crisi
Creators: name: Maggioli, Marco
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: During the different historical ages the city has been the scenario within
 which the consequences of the great economical, social and political
 issues have occurred. In this sense, the city of neoliberalism is the
output of globalization, where multiple reflections can be traced to the different
 geographical scales: from the neighbourhood to the region. At the
same time one of the elements of urban growth is “human capital” which
is one way of understanding urbanism of the contemporary city.
Leading from these considerations, the paper outlines, in a geographical
perspective, some possible interpretations of the current urban phase.

Aux différentes époques historiques, la ville représente le décor dans
lequel se manifestent les conséquences des grandes transformations
économiques, sociales et politiques. La ville du néolibéralisme apparaît
 en ce sens comme le produit concret de la globalisation dont les multiples
 reflets se retrouvent sur les cartes géographiques: du quartier à la région.
 En même temps, un des éléments de la croissance urbaine consiste
dans le «capital humain» qui représente l’une des façons d’envisager l’urbanité
 de la ville contemporaine. A partir de ces suggestions, l’article trace,
dans une optique géographique, quelques interprétations possibles (de
l’actuel phase urbaine) de l’actuel développement urbain.
description: Semestrale di studi e ricerche di geografia, N. 1 (2010): Geografie urbane della crisi a cura di Marco Maggioli
Conservation-Law-Induced Quantum Limits for Physical Realizations of the Quantum NOT Gate
Creators: name: Karasawa, Tokishiro
name: Ozawa, Masanao
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In recent investigations, it has been found that conservation laws generally lead to precision limits on quantum computing. Lower bounds of the error probability have been obtained for various logic operations from the commutation relation between the noise operator and the conserved quantity or from the recently developed universal uncertainty principle for the noise-disturbance trade-off in general measurements. However, the problem of obtaining the precision limit to realizing the quantum NOT gate has eluded a solution from these approaches. Here, we develop a new method for this problem based on analyzing the trace distance between the output state from the realization under consideration and the one from the ideal gate. Using the mathematical apparatus of orthogonal polynomials, we obtain a general lower bound on the error probability for the realization of the quantum NOT gate in terms of the number of qubits in the control system under the conservation of the total angular momentum of the computational qubit plus the the control system along the direction used to encode the computational basis. The lower bound turns out to be more stringent than one might expect from previous results. The new method is expected to lead to more accurate estimates for physical realizations of various types of quantum computations under conservation laws, and to contribute to related problems such as the accuracy of programmable quantum processors.
description: 38 pages, 2 figures
Effect of large-angle incidence on particle identification performance for light-charged ($Z \le 2$) particles by pulse shape analysis with a pad-type nTD silicon detector
Creators: name: Kawase, Shoichiro
name: Murota, Takuya
name: Fukuda, Hiroya
name: Oishi, Masaya
name: Kawata, Teppei
name: Kitafuji, Kentaro
name: Manabe, Seiya
name: Watanabe, Yukinobu
name: Nishibata, Hiroki
name: Go, Shintaro
name: Kai, Tamito
name: Nagata, Yuto
name: Muto, Taiga
name: Ishibashi, Yuichi
name: Niikura, Megumi
name: Suzuki, Daisuke
name: Matsuzaki, Teiichiro
name: Ishida, Katsuhiko
name: Mizuno, Rurie
name: Kitamura, Noritaka
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In recent years, particle discrimination methods based on digital waveform analysis techniques for neutron-transmutation-doped silicon (nTD-Si) detectors have become widely used for the identification of low-energy charged particles. Although the particle discrimination capability of this method has been well demonstrated for small incident angles, the particle discrimination performance may be affected by changes in the detector response when the detector is moved closer to the charged particle source and the incident position distribution and incident angle distribution to the detector become wide. In this study, we performed a beam test for particle discrimination in light-charged ($Z \le 2$) particles using the digital waveform analysis method with a pad-type nTD-Si detector and investigated the dependence of the performance of the particle discrimination on the incident position and incident angle. As the incident angle increased, a decrease in the maximum current was observed, which was sufficient to affect the performance of the particle discrimination. This decrease can be expressed as a function of the penetration depth of the charged particles into the detector, which varies for each nuclide.
description: 8 pages, 13 figures
Additional file 6 of Novel physical performance-based models for activities of daily living disability prediction among Chinese older community population: a nationally representative survey in China
Creators: name: Zhang, Li
name: Chen, Yueqiao
name: Liu, Jing
name: Yu, Yifan
name: Cui, Huijie
name: Chen, Qiuzhi
name: Chen, Kejin
name: Yang, Chunxia
name: Yang, Yanfang
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Science Policy

description: Additional file 6: Figure S3. Nomogram for Model 2 (handgrip strength model).
Additional file 9 of Novel physical performance-based models for activities of daily living disability prediction among Chinese older community population: a nationally representative survey in China
Creators: name: Zhang, Li
name: Chen, Yueqiao
name: Liu, Jing
name: Yu, Yifan
name: Cui, Huijie
name: Chen, Qiuzhi
name: Chen, Kejin
name: Yang, Chunxia
name: Yang, Yanfang
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Science Policy

description: Additional file 9: Figure S6. Nomogram for Model 5 (handgrip strength + SPPB model).
Trachonurus sentipellis Gilbert and Cramer 1897
Creators: name: Iwamoto, Tomio
name: Nakayama, Naohide
name: Shao, Kwang-Tsao
name: Table, Hsuan-Ching Ho
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Gadiformes
Macrouridae
Trachonurus
Trachonurus sentipellis

description: Trachonurus sentipellis Gilbert and Cramer, 1897
Figures 25A–C.
Trachonurus sentipellis Gilbert and Cramer, 1897:429 (syntypes SU 3140 and USNM 51689; Hawaiian Is., 21°12ʹ00ʺN, 157°38ʹ30ʺW, Albatross sta. 3474, 375 fm [686 m]).— Iwamoto, 1997:945.— Iwamoto and Merrett, 1997:551.— Iwamoto and Williams, 1999:213 (descr., w. and se. Australia).— Merrett and Iwamoto, 2000:775 (6 spec., New Caledonia, 764–1,050 m).— Iwamoto and Graham, 2001:495 (3 spec., se Australia, 940–1130 m).— Shao et al., 2008: table 2 (7 spec., Taiwan [SWT, SCS], 441–1040 m).
MATERIAL EXAMINED (10 spec.).— SWT: ASIZP 64232 (2, 54.6–61.0 HL, 265+-295+ TL), CD 193, 821 m; ASIZP 65539 (1, 59.9 HL, 305 TL), CD 134, 736– 1040 m; ASIZP 65543 (1, 150 TL), CD 138, 441 m; ASIZP 65544 (1, 175 TL) and ASIZP 65548 (1, 135 TL), CD 203, 634– 866 m; ASIZP 65637 (1, 310+ TL), CD 229, 880– 1062 m. SCS: ASIZP 66150 (1, 49 HL, 250+ TL), CD 321, 954 m; ASIZP 66743 (2, 21–32 HL, 105+-170+ TL), CD 320, 731 m.
DISTINGUISHING FEATURES.— 1D II,6–8; P 15–16 (rarely 18); V 7; total GR-I (inner) 11–13; scale rows below origin 2D usually 6–7, below midbase 1D 5–7; lateral line scales over distance equal to pre-1D length 26–34; scale rows between V base and gill cover 8–9; pyl. caeca 9–13, short, thick. Snout length 23–26% HL; interorbital width 26–33%; orbit diameter 27–37%; suborbital width 8–12; postorbital length 38–53%; orbit-preopercle 26–33; upper jaw 28–37%; barbel 8–11%; 1D-2D interspace 11–29%. Grooved lateral line present; body scales relatively large, coarsely covered with stout, erect spinules. Jaw teeth all small. Attains more than 31 cm TL. (Adapted from Iwamoto 1997.)
DISTRIBUTION.— Hawaii, Australia, New Caledonia, and Taiwan in 441–1130 m. Specimens from Taiwan were all taken from the South China Sea in 441–1040 m; they represent the first record of the species from the w. North Pacific.
REMARKS.— Trachonurus sentipellis is closely similar to T. robinsi Iwamoto, 1997 from the Philippines, but that species shows differences in some meristic values: P rays 10–14 vs. 15–16; inner GR-I 9–11 vs. 11–13; scales below 2D origin 4–6 vs. 5–8 (usually 6–7). Also, where T. sentipellis almost invariably has V 7, in T. robinsi the count is more often 6 than 7, and the maximum size in T. robinsi probably does not exceed 25 cm, whereas T. sentipellis exceeds 31 cm.
description: Published as part of Iwamoto, Tomio, Nakayama, Naohide, Shao, Kwang-Tsao & Table, Hsuan-Ching Ho, 2015, Synopsis of the Grenadier Fishes (Gadiformes; Teleostei) of Taiwan, pp. 31-126 in Proceedings of the California Academy of Sciences 62 (3) on pages 103-104, DOI: 10.5281/zenodo.11512126
Symmetries and spectral statistics in chaotic conformal field theories II: Maass cusp forms and arithmetic chaos
Creators: name: Haehl, Felix M.
name: Reeves, Wyatt
name: Rozali, Moshe
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We continue the study of random matrix universality in two-dimensional conformal field theories. This is facilitated by expanding the spectral form factor in a basis of modular invariant eigenfunctions of the Laplacian on the fundamental domain. The focus of this paper is on the discrete part of the spectrum, which consists of the Maass cusp forms. Both their eigenvalues and Fourier coefficients are sporadic discrete numbers with interesting statistical properties and relations to analytic number theory; this is referred to as `arithmetic chaos'. We show that the near-extremal spectral form factor at late times is only sensitive to a statistical average over these erratic features. Nevertheless, complete information about their statistical distributions is encoded in the spectral form factor if all its spin sectors exhibit universal random matrix eigenvalue repulsion (a `linear ramp'). We `bootstrap' the spectral correlations between the cusp form basis functions that correspond to a universal linear ramp and show that they are unique up to theory-dependent subleading corrections. The statistical treatment of cusp forms provides a natural avenue to fix the subleading corrections in a minimal way, which we observe leads to the same correlations as those described by the [torus]$\times$[interval] wormhole amplitude in AdS${}_3$ gravity.
description: 51 pages, 12 figures. v2: minor corrections (published version)
Gli spazi urbanizzati tra crisi del fordismo  e crisi del neoliberismo
Creators: name: Bonora, Paola
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: In this paper the relationship between cities and neoliberalism has been
dealt with; it has been in particular considered the crisis of fordism that
was accompained by the overturn of space-time coordinates, both responsible
 for the change of the perspectives and organization of the world.
City is the result of that change, determining the loss of city boundaries,
urban sprawl over vast areas of countryside. City and territory are transformed
 in merchandises within a property market without limits. Nowadays
crisis evidences the contradictions of neoliberalism. We can go through this
crisis only applying the territoriality principle and focussing on the idea of
qualitative human development.

On traite de la relation entre ville et néolibéralisme depuis la crise du
fordisme et du renversement des coordonnées spatio-temporelles
qui, dans cette période, changent l’organisation et la vision du
monde. La ville est le fruit de ce changement, elle perd ses frontières, se déforme et se pulvérise dans les campagnes. Ville et territoire sont transformés
 en marchandises d’un marché immobilier infini. La crise actuelle met
en évidence les contradictions du néolibéralisme. Seule l’application de critères
 de territorialité qui privilégie(nt) l’idée d’un développement qualitatif,
humain, permet de dépasser la crise.
description: Semestrale di studi e ricerche di geografia, N. 1 (2010): Geografie urbane della crisi a cura di Marco Maggioli
A new class of plane symmetric solution
Creators: name: Zhang, Hongsheng
name: Noh, Hyerim
name: Zhu, Zong-Hong
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A new class of static plane symmetric solution of Einstein field equation generated by a perfect fluid source is put forward. A special family of this new solution is investigated in detail. The constraints on the parameters by different energy conditions are studied. The classical stability of this solution is discussed. The junction conditions matching to Minkowski metric and Taub metric are analyzed respectively.
description: 10 pages, v2: a typo in equation (37) corrected, v3: equation (68) corrected, PLB V663, Pages 291-296
Generalized Majorana edge modes in a number-conserving periodically driven $p$-wave superconductor
Creators: name: Bomantara, Raditya Weda
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study an analytically solvable and experimentally relevant number-conserving periodically driven $p$-wave superconductor. Such a system is found to support generalized Majorana zero and $π$ modes which, despite being non-Hermitian, are still capable of encoding qubits. Moreover, appropriate winding numbers characterizing the topology of such generalized Majorana modes are defined and explicitly calculated. We further discuss the fate of the obtained generalized Majorana modes in the presence of finite charging energy. Finally, we shed light on the quantum computing prospects of such modes by demonstrating the robustness of their encoded qubits and explicitly braiding a pair of generalized Majorana modes.
description: 16 pages, 5 figures. Published in PRB
A simple circuit realization of the tent map
Creators: name: Campos-Canton, I.
name: Campos-Canton, E.
name: Murguia, J. S.
name: Rosu, H. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present a very simple electronic implementation of the tent map, one of the best-known discrete dynamical systems. This is achieved by using integrated circuits and passive elements only. The experimental behavior of the tent map electronic circuit is compared with its numerical simulation counterpart. We find that the electronic circuit presents fixed points, periodicity, period doubling, chaos and intermittency that match with high accuracy the corresponding theoretical values
description: 6 pages, 6 figures, 10 references, published version
Effects of Pressure and Doping on Ruddlesden-Popper phases Lan+1NinO3n+1
Creators: name: Zhang, Mingxin
name: Pei, Cuiying
name: Wang, Qi
name: Zhao, Yi
name: Li, Changhua
name: Cao, Weizheng
name: Zhu, Shihao
name: Wu, Juefei
name: Qi, Yanpeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recently the discovery of superconductivity with a critical temperature Tc up to 80 K in Ruddlesden-Popper phases Lan+1NinO3n+1 (n = 2) under pressure has garnered considerable attention. Up to now, the superconductivity was only observed in La3Ni2O7 single crystal grown with the optical-image floating zone furnace under oxygen pressure. It remains to be understood the effect of chemical doping on superconducting La3Ni2O7 as well as other Ruddlesden-Popper phases. Here, we systematically investigate the effect of external pressure and chemical doping on polycrystalline Ruddlesden-Popper phases. Our results demonstrate the application of pressure and doping effectively tunes the transport properties of Ruddlesden-Popper phases. We find pressure-induced superconductivity up to 86 K in La3Ni2O7 polycrystalline sample, while no signatures of superconductivity are observed in La2NiO4 and La4Ni3O10 systems under high pressure up to 50 GPa. Our study sheds light on the exploration of high-Tc superconductivity in nickelates.
description: 21 papes, 8 figures and 1 table
Formaldehyde as a Tracer of Extragalactic Molecular Gas I. Para-H_2CO Emission From M 82
Creators: name: Mühle, S.
name: Seaquist, E. R.
name: Henkel, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the IRAM 30-m telescope and the 15-m JCMT, we explore the value of para-formaldehyde (p-H_2CO) as a tracer of density and temperature of the molecular gas in external galaxies. The target of our observations are the lobes of the molecular ring around the center of the nearby prototypical starburst galaxy M 82. It is shown that p-H_2CO provides one of the rare direct molecular thermometers. Reproducing the measured line intensities with a large velocity gradient (LVG) model, we find densities of n_H2 ~ 7 10^3 cm^-3 and kinetic temperatures of T_kin ~ 200 K. The derived kinetic temperature is significantly higher than the dust temperature or the temperature deduced from ammonia (NH_3) lines, but our results agree well with the properties of the high-excitation component seen in CO. We also present the serendipitous discovery of the 4_2 - 3_1 line of methanol (CH_3OH) in the northeastern lobe, which shows -- unlike CO and H_2CO -- significantly different line intensities in the two lobes.
description: 32 pages, 6 figures, accepted for publication by the Astrophysical Journal, for a pdf version with color figures, see http://www.astro.utoronto.ca/~muehle/papers/h2co1.pdf
Identification of novel regulatory elements in sequenced genomes by clustering and other data mining methods
Creators: name: Cozzuto, Luca
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: In bacterial genomes a fraction of transcribed sequences do not code for proteins or structural RNAs, but have been shown to be involved in fundamental processes, such as regulation of gene expression, mRNA processing and stability or structural RNA maturation. In this thesis a systematic procedure to identify and classify families of repeated sequences sharing a common RNA secondary structure was applied to the study of 40 bacterial genomes. Sequences able to fold in a stable stem loop structure were clustered according to sequence similarity, and grouped within homogeneous families. The study led to the identification of 57 families of repeated sequences, sharing a common secondary structure and potentially coding for structured RNAs. All previously known such families have been detected by the used procedure, and are listed within the final set, together with 37 novel ones. Their location in relation to protein coding genes was evaluated, and a correlation was found between structure and positioning within intergenic regions.
A new software tool is also described, Scaffolder, designed to help in high-throughput de novo genome sequencing by finding connections between contigs produced by random shotgun sequencing, and assisting the researcher in the whole process. The software, accessible both as a command line tool and as a web application, can guide all the final phases of genome assembly by storing the current assembly status, displaying networks of connected contigs and untangling multiply connected ones by a combination of  computational and experimental procedures.
Emergent self-duality in long range critical spin chain: from deconfined criticality to first order transition
Creators: name: Yang, Sheng
name: Pan, Zhiming
name: Lu, Da-Chuan
name: Yu, Xue-Jia
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Over the past few decades, tremendous efforts have been devoted to understanding self-duality at the quantum critical point, which enlarges the global symmetry and constrains the dynamics. In this letter, we employ large-scale density matrix renormalization group simulations to investigate the critical spin chain with long-range interaction $V(r) \sim 1/r^α$. Remarkably, we reveal that the long-range interaction drives the deconfined criticality towards a first-order phase transition as $α$ decreases. More strikingly, the emergent self-duality leads to an emergent symmetry and manifests at these first-order critical points. This discovery is reminiscent of self-duality protected multicritical points and provides the example of the critical line with generalized symmetry. Our work has far-reaching implications for ongoing experimental efforts in Rydberg atom quantum simulators.
description: Accepted by Phys. Rev. B
Ventrifossa garmani
Creators: name: Iwamoto, Tomio
name: Nakayama, Naohide
name: Shao, Kwang-Tsao
name: Table, Hsuan-Ching Ho
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Gadiformes
Macrouridae
Ventrifossa
Ventrifossa garmani

description: Ventrifossa garmani (Jordan and Gilbert, 1904)
Figures 28A–B.
Coryphaenoides garmani Jordan and Gilbert in Jordan and Starks, 1904:610 (holotype USNM 50933, Sagami Bay, Japan, 110–259 fm [201–474 m]; paratypes ANSP 114108 [1 spec.], CAS-SU 8548 [5 spec.], USNM 51415 [9 spec.]).
Ventrifossa garmani: Matsubara, 1955:1315.— Kamokara, 1964:96.— Okamura, 1970:74.— Iwamoto, 1979: 152.— Okamura in Okamura et al., 1982:145, 348.— Okamura in Masuda et al., 1984:94.— Okamura in Okamura and Kitajima, 1984:213, 360.— Iwamoto, 1990:300–301, fig. 678–679 (descr.).— Shen et al., 1993:172 (desc.).— Chiou et al., 2004b:37, 47 (in key, list).— Shao et al., 2008: table 2 (2 spec., SWT).
MATERIAL EXAMINED (8 spec.).— SWT: ASIZP 61306 (1, 260+ TL), Dong-gang. ASIZP 65586 (1, 235 TL), CD 140, 280– 452 m. Other materials: Japan: USNM 50933 (holotype, 52.8 HL, 292 TL), Albatross sta. 3695, Sagami Bay, 201– 474 m. USNM 51415 (5 of 9 paratypes, 32–46.1 HL, 180–250+ TL), Suruga Bay, Albatross sta. 3738, 305 m.
DISTINGUISHING FEATURES.— 1D II,10–11; P i19–i22; V 8, rarely 9; inner GR-I 16–17 total, outer GR-II 16–17; scale rows below midbase 1D 7.5–9.0, below 2D 4.5–5.0; lateral line scales over distance equal to predorsal length 38–42. Snout length 25–27% HL; preoral length 18–19%; interorbital 29–32%; orbit 30–35%; suborbital 11–15%; orbit to preopercle 41–45%; upper jaw 42–47%; barbel 23–29%; outer gill slit 24–27%. Head and body relatively compressed; snout relatively short, high, forming obtuse angle viewed dorsally. Body scales covered with broad-based, triangular spinules in quincunx arrangement. Spinous ray of 1D usually less than HL, leading edge finely sawtoothed. Periproct occupying about half anterior space between V and A, close behind V bases, dermal window of light organ extends forward between V bases. Gill membranes narrowly united over isthmus and under midorbit. Color in preservative light to medium gray-brown overall, silvery over most of head, trunk, and anteriorly on sides of tail, but not over dorsum; jaws, gill membranes, and below suborbital ridge blackish; mouth pale, gill cavities blackish posteriorly; leading edge of snout blackish; 1D dusky, somewhat darker midlaterally; V blackish; P and A clear to dusky. Attains about 30 cm TL.
DISTRIBUTION.— From s. Japan to sw Taiwan [SCS], in 280–452 m.
REMARKS.— This is one of the most abundant species of macrourid in Japan, but it is not particularly common off Taiwan. The broadly triangular scale spinules on body scales are unique among the Taiwan members of this genus.
description: Published as part of Iwamoto, Tomio, Nakayama, Naohide, Shao, Kwang-Tsao & Table, Hsuan-Ching Ho, 2015, Synopsis of the Grenadier Fishes (Gadiformes; Teleostei) of Taiwan, pp. 31-126 in Proceedings of the California Academy of Sciences 62 (3) on pages 109-110, DOI: 10.5281/zenodo.11512126
"Geografie politiche d’Africa. Trame, spazi, narrazioni" di Angelo Turco. Un’Africa plurale attraverso spazi, persone e narrazioni
Creators: name: Schirripa, Pino
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2016

description: Semestrale di studi e ricerche di geografia, N. 2 (2016)
D2.12 Final Report - First Round of the Call
Creators: name: Austen, Kat
Publisher: name: Zenodo
Year: 2021
Subjects: Citizen science
Accelerator model
Mentoring
Codesign
Coronavirus
COVID-19
pandemic
participatory research

description: This report details the planning and execution of the first round of the ACTION Accelerator (2020), including its dynamic response to the Coronavirus pandemic. The document is intended both as documentation of the first round and as a useful resource for those considering embarking upon such an Accelerator format for the incubation of citizen science projects in general.
Data-Driven Approach for Noise Reduction in Pressure-Sensitive Paint Data Based on Modal Expansion and Time-Series Data at Optimally Placed Points
Creators: name: Inoue, Tomoki
name: Matsuda, Yu
name: Ikami, Tsubasa
name: Nonomura, Taku
name: Egami, Yasuhiro
name: Nagai, Hiroki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We propose a noise reduction method for unsteady pressure-sensitive paint (PSP) data based on modal expansion, the coefficients of which are determined from time-series data at optimally placed points. In this study, the proper orthogonal decomposition (POD) mode calculated from the time-series PSP data is used as a modal basis. Based on the POD modes, the points that effectively represent the features of the pressure distribution are optimally placed by the sensor optimization technique. Then, the time-dependent coefficient vector of the POD modes is determined by minimizing the difference between the time-series pressure data and the reconstructed pressure at the optimal points. Here, the coefficient vector is assumed to be a sparse vector. The advantage of the proposed method is a self-contained method, while existing methods use other data such as pressure tap data for the reduction of the noise. As a demonstration, we applied the proposed method to the PSP data measuring the Kármán vortex street behind a square cylinder. The reconstructed pressure data is agreed very well with the pressures independently measured by pressure transducers.
description: This article has been submitted to Physics of Fluids
Host plant variation and population limitation of two introduced insects
Creators: name: Morrison, Peter D. S.
Publisher: name: University of British Columbia
Year: 2010

description: The response to host plant variation shapes the long-term success of phytophagous insects. Two gall-forming tephritid flies, Urophora affinis and U. quadrifasciata, oviposit in flower buds of Centaurea diffusa and C. maculosa (Asteraceae). Females of both fly species chose among plants, among groups of buds on plants, and among buds. Among plant choices were correlated with buds per plant. Among bud choices corresponded to larval developmental requirements. Insect attack led to gall formation, bud abortion, and reduced seed production. Bud abortion, caused by probing females, limited gall densities. Increased densities of U. affinis females relative to oviposition sites led to more U. affinis galls, increased bud abortion, fewer U. quadrifasciata galls, and fewer seeds. A temporal refuge for seed production was observed. Plants compensated only slightly for aborted buds. Bud abortion may increase the search time between successful ovipositions. A simulation model based on this premise implied that bud abortion may dramatically reduce total gall formation. Plant quality was manipulated in an attempt to shift three population limiting factors. Plants responded to fertilization and watering with an increase in bud numbers. Except for two year-site-treatment combinations, galls per developed bud did not differ significantly between treatments. Treated plants did not differ in their propensity to abort buds. U. affinis larvae developed faster in fertilized plants. Among year comparisons showed that the density of buds available for oviposition was limited by precipitation, non-random insect attack, and, in the longer term, by the reduction in seed production due to fly attack. Bud densities, in turn, limited gall densities.
A Unified Framework for Multistage and Multilevel Mixed Integer Linear Optimization
Creators: name: Bolusani, Suresh
name: Coniglio, Stefano
name: Ralphs, Ted. K.
name: Tahernejad, Sahar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 90C26, 90C15, 91A68

description: We introduce a unified framework for the study of multilevel mixed integer linear optimization problems and multistage stochastic mixed integer linear optimization problems with recourse. The framework highlights the common mathematical structure of the two problems and allows for the development of a common algorithmic framework. Focusing on the two-stage case, we investigate, in particular, the nature of the value function of the second-stage problem, highlighting its connection to dual functions and the theory of duality for mixed integer linear optimization problems, and summarize different reformulations. We then present two main solution techniques, one based on a Benders-like decomposition to approximate either the risk function or the value function, and the other one based on cutting plane generation.
Trigonarthris proxima
Creators: name: Webster, Reginald
name: McCoqrquodale, David
name: Majka, Christopher
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Trigonarthris
Trigonarthris proxima

description: Trigonarthris proxima (Say, 1824) New Brunswick: Carleton Co., Jackson Falls, “Bell Forest”, 46.2210°N, 67.7210°W, 12.VII.2004, K. Bredin, J. Edsall, & R.P. Webster, rich Appalachian hardwood forest, on flowers of Spiraea alba (2, RWC). Northumberland Co., 5 km W of Renous River and Rt. 108, 3.VIII.2000, on Spiraea, D.F. McAlpine (1, NBM). Sunbury Co., Portobello Creek N.W.A., 45.8992°N, 66.4248°W, 16.VII.2004, R.P. Webster, silver maple floodplain forest, on flowers of Spiraea alba (1, RWC). York Co., Charters Settlement, 45.8395°N, 66.7391°W, 28.VI.1996, 3.VIII.2004, R.P. Webster, mixed forest, on flowers of Spiraea alba (5, NBM, RWC).
description: Published as part of Webster, Reginald, McCoqrquodale, David & Majka, Christopher, 2009, New records of Cerambycidae (Coleoptera) for New Brunswick, Nova Scotia, and Prince Edward Island, Canada, pp. 285-308 in ZooKeys 22 (22) on page 295, DOI: 10.3897/zookeys.22.122, http://zenodo.org/record/576540
Generators of simple Lie algebras in arbitrary characteristics
Creators: name: Bois, Jean-Marie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Geometry (math.AG)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 17B50; 17B45

description: In this paper we study the minimal number of generators for simple Lie algebras in characteristic 0 or p > 3. We show that any such algebra can be generated by 2 elements. We also examine the 'one and a half generation' property, i.e. when every non-zero element can be completed to a generating pair. We show that classical simple algebras have this property, and that the only simple Cartan type algebras of type W which have this property are the Zassenhaus algebras.
description: 26 pages, final version, to appear in Math. Z. Main improvements and corrections in Section 4.3
Dynamical phase transition and scaling in the chiral clock Potts chain
Creators: name: Yu, Xue-Jia
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Based on time-dependent variational principle (TDVP) techniques, we investigate the dynamical critical behavior of quantum three-state Potts chains with chiral interactions. Using Loschmidt echo, order parameter, and entanglement entropy as an indicator, we show that as the chiral interaction $θ$ increases, the first critical time $t_{1}^{*}$ shift towards lower values, indicating a chirality-enhanced dynamical phase transition. Moreover, we perform dynamical scaling for the Loschmidt echo and obtain the critical exponent $ν$ at the non-conformal critical point. The results show that as the chiral interaction $θ$ increases, the correlation length exponent $ν$ decreases, which is similar to the long-range interaction case. Finally, we give a simple physical argument to understand the above numerical results. This work provides a useful reference for further research on many-body physics out of equilibrium with chiral interaction.
description: Accepted by Phys. Rev. A
Squalogadus modificatus Gilbert and Hubbs 1916
Creators: name: Iwamoto, Tomio
name: Nakayama, Naohide
name: Shao, Kwang-Tsao
name: Table, Hsuan-Ching Ho
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Gadiformes
Macrouridae
Squalogadus
Squalogadus modificatus

description: Squalogadus modificatus Gilbert and Hubbs, 1916
Figure 31.
Squalogadus modificatus Gilbert and Hubbs, 1916:156 (Bungo Channel, 32°32ʹN, 132°25ʹE, off Kyushu, Japan, Albatross sta. 4956, 720 fm [1317 m]; holotype USNM 76864, paratypes SU 22928).— Marshall, 1973:517–518.— Okamura, 1970:16–18, pl. IX (Sagami Bay and off Choshi, Japan).— Shiobara, 1982:143–146, figs. 1–3 (2 spec., 261–397 mm TL; Suruga Bay, Japan).— Sawada in Amaoka et al., 1983:105, 192, fig. 57 (HUMZ 78126, 1 spec., off Miyagi, Tohoku district, 1110 m).— Okamura in Masuda et al., 1984:93.— Endo et al., 1994:332 (HUMZ 121632, 1 spec., Sea of Okhotsk off ne. Hokkaido, 1393 m; n. record).— Okamura and Amaoka, 1997:129 (photograph of living individual).— Shinohara et al., 1996:170 (7 spec., east-central Honshu, Japan; 967–4867 m).— Shinohara et al., 1997:290 (listed).— Shinohara et al., 2001:306 (1 spec., Tosa Bay, 765–823 m).— Amaoka, 2009:177, fig. 304 (photo of fresh specimen). See also Shao et al. (2008: table 1, 1 spec., SCS) first record for Taiwan.
Squalogadus intermedius Grey, 1959:330–333, fig. 53 (holotype USNM 185606, n. Gulf of Mexico, R / V Oregon sta 1426, 1098 m; 5 paratypes, FMNH 64489).
MATERIAL EXAMINED.— SCS: ASIZP 64070 (1, 330+ TL), CP 178, 1241 m.
DISTINGUISHING FEATURES.— As for genus.
DISTRIBUTION.— Widespread in tropical and southern temperate seas, but absent in e. Pacific. In nw. Pacific, known off Japan, from Hokkaido to Kyushu and Taiwan.
REMARKS.— A single specimen collected from SCS off sw. Taiwan in 1241 m represents the first record from Taiwan.
description: Published as part of Iwamoto, Tomio, Nakayama, Naohide, Shao, Kwang-Tsao & Table, Hsuan-Ching Ho, 2015, Synopsis of the Grenadier Fishes (Gadiformes; Teleostei) of Taiwan, pp. 31-126 in Proceedings of the California Academy of Sciences 62 (3) on page 118, DOI: 10.5281/zenodo.11512126
The geodesic problem in quasimetric spaces
Creators: name: Xia, Qinglan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Metric Geometry (math.MG)
subject: Differential Geometry (math.DG)
subject: Functional Analysis (math.FA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 54E25, 51F99, 49Q20 (Primary), 90B18 (Secondary)

description: In this article, we study the geodesic problem in a generalized metric space, in which the distance function satisfies a relaxed triangle inequality $d(x,y)\leq σ(d(x,z)+d(z,y))$ for some constant $σ\geq 1$, rather than the usual triangle inequality. Such a space is called a quasimetric space. We show that many well-known results in metric spaces (e.g. Ascoli-Arzelà theorem) still hold in quasimetric spaces. Moreover, we explore conditions under which a quasimetric will induce an intrinsic metric. As an example, we introduce a family of quasimetrics on the space of atomic probability measures. The associated intrinsic metrics induced by these quasimetrics coincide with the $d_α$ metric studied early in the study of branching structures arisen in ramified optimal transportation. An optimal transport path between two atomic probability measures typically has a "tree shaped" branching structure. Here, we show that these optimal transport paths turn out to be geodesics in these intrinsic metric spaces.
description: 21 pages, 5 figures, published version
"Place-Name Changes. Proceedings of the Symposion in Rome, 17-18 November 2014" di Peter Jordan, Paul Woodman (eds.)
Creators: name: Siniscalchi, Silvia
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2016

description: Semestrale di studi e ricerche di geografia, N. 2 (2016)