cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Learning about heat and temperature : a study of a grade nine science class
Creators: name: Haggerty, Sharon May
Publisher: name: University of British Columbia
Year: 2010

description: Many students complete science units with little or no understanding of the concepts taught. Such students frequently cope with difficult science concepts by memorizing definitions, formulas and other school science facts. Some researchers have suggested that one factor which may be related to difficulties students have is the students' prior beliefs about the topic. If a student possesses well established beliefs about scientific phenomena, and if those beliefs are contrary to the view presented in school science, the student is placed in a conflict position. If instruction does nothing to discredit a prior alternative belief, a student may reject the school science view, in favour of his/her alternative view. Students' beliefs about heat and temperature were investigated prior to, and during a grade nine science unit. Many of the students' prior alternative beliefs persisted in spite of instruction. Instruction did not attempt to discredit the alternative beliefs. Rather, the school science view was presented and said to be correct. Many students responded by memorizing school science definitions and facts. Some students appeared to distinguish between correct answers for school science and what they believed to be true, giving one view on the school science test and another on the posttest. School science achievement was significantly related to success on the lowest level questions of the posttest, but not to higher level questions, presumably because many students relied on rote learning for their success in school science. Boys outperformed girls on higher level, but not lower level posttest questions. Boys contributed more to class discussion than did girls, and participation in class discussion was related to success on higher level posttest questions. Five factors appeared to account, in part, for many of the difficulties experienced by students: many phenomena were explained in terms of the mechanical energy of the particles of matter; some phenomena were not explained, and some of the more competent students expected to have explanations; some alternative beliefs were neither identified nor addressed during instruction; many students seemed unaware of the function of a scientific model; and, some concepts were not adequately discussed in class.
Geografia delle migrazioni (Roma, 16 dicembre 2010)
Creators: name: Tanca, Marcello
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: Quelli migratori sono processi a più dimensioni: assumono aspetti diversi
a seconda delle scale e dei contesti territoriali nei quali sono
inseriti, richiedono categorie di analisi flessibili che ne collochino gli
sviluppi allinterno dei quadri geopolitici e politico-economici che da un lato
ne dettano tempi e modi, dallaltro sono a loro volta mobili e dinamici, in
continuo movimento. Il seminario Geografia delle migrazioni, organizzato
da Flavia Cristaldi che si è svolto il 16 dicembre 2010 presso la Facoltà di
Lettere e Filosofia delluniversità La Sapienza, ha offerto un quadro sufficientemente variegato sul tema dei fenomeni migratori.
description: Semestrale di studi e ricerche di geografia, N. 1 (2011): La costruzione delle biografie territoriali: archivi e rappresentazione a cura di Marco Maggioli
Coelorhinchus hexafasciatus Okamura 1982
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
Coelorhinchus
Coelorhinchus hexafasciatus

description: Coelorhinchus hexafasciatus Okamura, 1982
Figure 6.
Coelorhynchus hexafasciatus Okamura in Okamura, Amaoka and Mitani, 1982:173, pl. 104 (Holotype: BSKU 30443; Kyushu-Palau Ridge, 26°45.0ʹN, 135°19.0ʹE, 336 m; 31 paratypes from Kyushu-Palau Ridge).
MATERIAL EXAMINED.— ASIZP 71202 (1, 133.3 mm HL, 494+ mm TL), Da-xi.
DISTINGUISHING FEATURES.— 1D II,9; P i17–18; V 7; GR-I (inner) 8; GR-II (outer/inner) 7/9; scale rows below 1D origin 7.5, below midbase 1D 5.5, below 2D origin 6. Snout conical, 40% HL; terminal scute rather blunt; anterolateral margin of snout incompletely support by bone; orbit 23% HL, 1.8 in snout length; mouth large, upper jaw 31% HL; posterior end of rictus scarcely restricted by a lip fold. Premaxillary teeth arranged in wide tapered band; outer series distinctly enlarged. Light organ restricted as a short naked streak before anus. Underside of head completely naked except for lower preopercle; nasal fossa scaled ventrally. Body scales large, adhered, covered with keel-like spinules in 7 widely divergent rows. Second spinous ray of 1D not elongated; 2D poorly developed throughout its length. About 6 dark saddles dorsally on trunk and tail; gill membrane blackish posteriorly; fins generally dark, but outer V ray somewhat paler. Attains at least 70 cm TL.
DISTRIBUTIONs.— Known from the Kyushu-Palau Ridge, s. Japan, and the East China Sea off Taiwan, in about 340–1320 m.
REMARKS.— This species may be confused with C. sheni (known only from Taiwan), but the two are readily distinguished by squamation on the head (underside of head mostly naked in C. hexafasciatus vs. completely scaled in C. sheni). The specimen herein reported represents the first record of the species from Taiwanese waters. The species was originally described from the Kyushu-Palau Ridge, but no additional specimens had been reported after the original description.
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 56, DOI: 10.5281/zenodo.11512126
The nature of Ho magnetism in multiferroic HoMnO3
Creators: name: Nandi, S.
name: Kreyssig, A.
name: Tan, L.
name: Kim, J. W.
name: Yan, J. Q.
name: Lang, J. C.
name: Haskel, D.
name: McQueeney, R. J.
name: Goldman, A. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using x-ray resonant magnetic scattering and x-ray magnetic circular dichroism, techniques that are element specific, we have elucidated the role of Ho3+ in multiferroic HoMnO3. In zero field, Ho3+ orders antiferromagnetically with moments aligned along the hexagonal c direction below 40 K, and undergoes a transition to another magnetic structure below 4.5 K. In applied electric fields of up to 1x10^7 V/m, the magnetic structure of Ho3+ remains unchanged.
description: 4 pages, 3 figures Manuscript accepted for publication in Phys. Rev. Lett. 2008
Refiguring Italian Cultural Quarters: "Il Ghetto di Venezia. 500 anni di vita" [The Venice Ghetto. 500 Years of Life] (Film by Emanuela Giordano, 2015) and "Primavere e Autunni" [Springs and Autumns] (Graphic Novel by Ciaj Rocchi and Matteo Demonte, 2015)
Creators: name: Rossetto, Tania
name: Peterle, Giada
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2016

description: This piece briefly summarizes the contents of part of a University course in
cultural geography held at the University of Padua in the 2015/16 academic
year, with the aim of suggesting a possible didactical contextualization for
two recent creative works devoted to very different examples of “cultural
quarters” in Italy (the Venetian Jewish quarter and so-called “Milan’s
Chinatown”). The very first notion of comparing the docufilm Il Ghetto di
Venezia. 500 anni di vita [The Venice Ghetto. 500 Years of Life] (2015) and
the graphic novel Primavere e Autunni [Springs and Autumns] (2015)
originated from a purely formal appreciation of them. The works, in fact,
both present pieces of creative cartography of the cultural quarter, which
have particularly stimulated our imaginations as cultural geographers (Figs 1
and 2). Subsequently, a deeper analysis of the complex implications of these
informed and carefully arranged creative works led us to consider them
precious resources for the teaching of cultural geography. Creative works
became crucial given that we built upon them educational projects that refer
to complex, transcalar, and multidimensional relations between cultural
processes and spaces. In the initial part of this article, therefore, we draw on
recent international and Italian literature on ethnic spatial concentration to
contextualize the two works presented here.
description: Semestrale di studi e ricerche di geografia, N. 2 (2016)
MPEC 2025-C156 : DAILY ORBIT UPDATE (2025 February 10)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
"Paesaggi di parole. La provincia di Roma" di Simone Bozzato
Creators: name: Spagnoli, Luisa
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: Il contesto territoriale della provincia di Roma, così come si è dispiegato attraverso le brillanti e molteplici pagine dei diversi generi letterari  dalla poesia alla prosa, alla narrativa, alla memorialisica  che hanno visto la luce durante il corso del Novecento, costituisce il filo conduttore delle riflessioni e considerazioni a fondamento del volume curato da Simone Bozzato. La provincia di Roma con i suoi differenti e caleidoscopici paesaggi rappresenta lo sfondo scenografico su cui si innestano brani narrativi, descrizioni letterarie che vanno al di là della mera apparenza fisica degli ambienti, della loro materialità e consistenza tangibile, per sfociare in un racconto esistenziale nel quale è racchiuso il legame peculiare che da sempre lega luomo ai luoghi del proprio vivere.
description: Semestrale di studi e ricerche di geografia, N. 1 (2011): La costruzione delle biografie territoriali: archivi e rappresentazione a cura di Marco Maggioli
Three parameter metrics in the presence of a scalar field in four and higher dimensions
Creators: name: Azizallahi, Alireza
name: Mirza, Behrouz
name: Hajibarat, Arash
name: Anjomshoa, Homayon
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate a class of three parameter metrics that contain both the $γ$-metric and Janis-Newman-Winicour (JNW) metric at special values of the parameters. To see the effect of the scalar field we derive some properties of this class of metrics such as curvature invariants, the effective potential, and epicyclic frequencies. We also introduce the five and higher dimensional forms of the class of metrics in the presence of a scalar field.
description: 12 pages, 9 figures
Resistivity size effect due to surface steps on ruthenium thin films computed with a realistic tight-binding model
Creators: name: Richardson, W. E.
name: Mucciolo, E. R.
name: Schelling, P. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A realistic tight-binding model is developed and employed to elucidate the resistivity size effect due to steps on Ru thin films. The resistivity of two different film orientations, $(0001)$ and $(1 \bar{1}00)$, is computed for transport along a $[1 1 \bar{2} 0]$ direction both for smooth surfaces and for surfaces with monolayer-high steps. In the case of smooth films, the systems are also studied using solutions to the Boltzmann transport equation (BTE). Interestingly, the resistivity of $(1 \bar{1}00)$ surfaces exhibits a significant size effect even in the absence of surface steps. When monolayer-high steps are spaced $\sim 10$ nm apart, the resistivity is shown to increase due to scattering from the steps. However, only a small increase was found which cannot explain the large effect seen in recent experiments with Ru thin films. This highlights the need for further elucidation of the resistivity size effect. Theoretical analysis suggest that films made from materials with a relatively large ballistic conductance per area like Ru should exhibit a reduced resistivity size effect. This result points to Ru as a promising interconnect material. Finally, because a very efficient algorithm for computing resistivity based on the kernel polynomial method (KPM) is used, the approach fulfills a need for realistic models that can span length scales directly relevant to experimental results. The calculations described here include films approaching $5$ nm in thickness, with in-plane distances up to $\sim 160$ nm and $3.8\times10^{5}$ atomic sites.
description: 13 pages, 10 figures
Quantization of Donaldson-Uhlenbeck-Yau theory
Creators: name: Lyakhovich, S. L.
name: Sharapov, A. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A covariant path-integral quantization is proposed for the non-Lagrangian gauge theory described by the Donaldson-Uhlenbeck-Yau equation. The corresponding partition function is shown to admit a nice path-integral representation in terms of the gauged G/G Kähler WZW model. A relationship with the $J$-formulation of the anti-self-dual Yang-Mills theory is explored.
description: 13pages
The effect of teaching-learning strategies on achievement in grade nine science
Creators: name: Jordan, Elizabeth Anne
Publisher: name: University of British Columbia
Year: 2010

description: Using Information-Processing as a theoretical base this study sought to determine whether or not specific cognitive strategies could be taught and learned. These strategies dealt with memory skills which have been shown to occur naturally in mature learners. However, it has been shown that even some university students lack these basic skills and resort to ineffective memory techniques. This results in failure to recall information and an inability to resolve problem solving tasks. Four tasks were designed: Summarizing a Reading, Self-Testing Vocabulary, Writing Questions and Answers and Diagramming. Seven volunteer Grade 9 Science teachers, with 311 students, were assigned to an experimental and a comparison group. Both groups were asked to follow an outline based on the Provincial Curriculum for Grade 9 Science. One group was assigned predetermined tasks from the text while the experimental group utilized the tasks above. In the analysis, the Recall part and the Problem Solving part of the Posttest constituted measures on the variables of the Dependent Variable Set while the Pretest, Scores in Grade 8 Science and the Arlin Test of Formal Reasoning constituted the measures on the variables for the Independent Variable Set. An initial Canonical Analysis determined the relationship between the two sets of variables. An Analysis of Covariance was performed using Previous Achievement and the Pretest. A Post-Hoc Scheffe Test analyzed contrasts between groups regarding developmental level. The results showed a statistically significant difference, α=0.05, for the comparison group on recall; while the experimental group showed a statistically significant difference on Problem Solving. No interactions-were found between the variables and the grouping. Further analysis indicated that while the results were statistically significant, mean score differences were very small. The observation was made that while results might be statistically significant they may be educationally questionable. Arguments were presented which suggested that the unit taught was incorrectly assumed by teachers, curriculum developers and this researcher to be new material. It was further suggested that this information had become "common knowledge". Although the teachers found the materials useful, the prior knowledge prevented clear answers to the questions asked.
Leptura obliterata subsp. deleta
Creators: name: Webster, Reginald
name: McCoqrquodale, David
name: Majka, Christopher
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptura
Leptura obliterata
Leptura obliterata deleta (leconte, 1850)

description: Leptura obliterata deleta (LeConte, 1850) *** New Brunswick: York Co., W. of Canterbury, “Browns Mountain Fen”, 45.89654°N, 67.63435°W, 7.IX.2007, R. P. Webster, eastern white cedar fen, on a branch of a small, dying eastern white cedar, Thuja occidentalis (1, RWC). This subspecies of a more common western species, is considered to be very rare and was previously known only from a few states in the northeastern U.S.A. (Yanega 1996). Th is specimen represents the first record of this subspecies in Canada.
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 294, DOI: 10.3897/zookeys.22.122, http://zenodo.org/record/576540
description: {"references": ["Yanega D (1996) Field guide to northeastern long-horned beetles (Coleoptera: Cerambycidae), Illinois Natural History Survey Manual 6, Champaign, Illinois. 174 pp."]}
Pairing correlations and effective mass
Creators: name: Yoshida, Satoshi
name: Sagawa, Hiroyuki
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the effect of effective mass on pairing correlations in the ground states of superfluid nuclei $^{124}$Sn and $^{136}$Sn. Various parameter sets of Skyrme interactions and relativistic Lagrangians are adopted to study pairing correlations across a wide range of effective mass. It is shown that surface-type pairing interaction gives an almost constant pairing gap as a function of the effective mass, while volume-type pairing interaction shows rather strong dependence of the pairing gap upon the effective mass. The local pair potentials of various effective interactions are also examined in relation to the effective mass.
description: 14pages,5figures
Disease from opposing forces in regulatory control
Creators: name: Frank, Steven A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Danger requires a strong rapid response. Speedy triggers are prone to false signals. False alarms can be costly, requiring strong negative regulators to oppose the initial triggers. Strongly opposed forces can easily be perturbed, leading to imbalance and disease. For example, immunity and fear response balance strong rapid triggers against widespread slow negative regulators. Diseases of immunity and behavior arise from imbalance. A different opposition of forces occurs in mammalian growth, which balances strong paternally expressed accelerators against maternally expressed suppressors. Diseases of overgrowth or undergrowth arise from imbalance. Other examples of opposing forces and disease include control of dopamine expression and male versus female favored traits.
description: Two new figures to explain concepts, some editing to clarify key points
"La salute nel mondo. Geografia medica e qualità della vita" di Cosimo Palagiano e Cristiano Pesaresi
Creators: name: Bevilaqua, Noemi
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: Agli inizi degli anni Ottanta del Novecento, con la pubblicazione del
volume Geografia e Medicina (1981, Il Bagatto, Roma) e con l'organizzazione del primo Seminario Internazionale di Geografia medica (1982), Cosimo Palagiano si è fatto promotore, in Italia, di una branca della geografia, quella medica appunto, incentrata in particolare: sul rapporto tra lo stato di salute umana e lambiente di vita; sull'interazione fra fattori biologici e ambiente e su quelli genetici e comportamentali che influenzano linsorgere di determinate patologie; sui fattori, sulle aree di rischio e sulla distribuzione delle malattie, infettive e croniche; sull'efficacia ed efficienza delle strutture sanitarie; sulla qualità della vita e sull'analisi dei relativi indicatori.
description: Semestrale di studi e ricerche di geografia, N. 1 (2011): La costruzione delle biografie territoriali: archivi e rappresentazione a cura di Marco Maggioli
Shadows and rings of a de Sitter-Schwarzschild black hole
Creators: name: Wang, Zi-Liang
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the optical appearance of a de Sitter-Schwarzschild black hole and its distinguishability from a Schwarzschild black hole. By exploring various accretion models and emission profiles, we investigate the impact of different parameters on the observed shadows and intensity profiles. Our analysis reveals that the outer edge of the shadow, corresponding to the apparent radius of the photon sphere, remains consistent regardless of the spherical accretion details or the size of the black hole. However, subtle differences in the overall brightness and intensity distribution can arise between these two black holes, especially for emission models with sharp peaks near the event horizon. We find that the de Sitter-Schwarzschild black hole tends to exhibit a slightly darker appearance in certain scenarios, while in others, it can appear slightly brighter than the Schwarzschild black hole. These distinctions become more prominent as the radial emission decreases more rapidly. Nevertheless, the size of the shadow alone is not sufficient to differentiate the potential differences in the optical appearance between the de Sitter-Schwarzschild black hole and the Schwarzschild black hole. Instead, distinctions may be observed in the overall brightness of the image.
description: v1:25 pages, 14 figures; v2:published version
Linear Relations and their Breakdown in High Energy Massive String Scatterings in Compact Spaces
Creators: name: Lee, Jen-Chi
name: Yang, Yi
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate high energy massive scattering amplitudes of closed bosonic string compactified on the torus. For each fixed mass level with given quantized and winding momenta ((m/R),(1/2)nR), we obtain infinite linear relations among high energy scattering amplitudes of different string states. For some kinematic regimes, we discover that linear relations with N_{R}=N_{L} break down and, simultaneously, the amplitudes enhance to power-law behavior instead of the usual expoential fall-off behavior at high energies. It is the space-time T-duality symmetry that plays a role here. This result is consistent with the coexistence of the linear relations and the softer exponential fall-off behavior of high energy string scattering amplitudes as we pointed out prevously. It is also reminiscent of our previous work on the power-law behavior of high energy string/domain-wall scatterings.
description: 18 pages, 1 figure
Thermodynamic Topology and Photon Spheres in the Hyperscaling violating black holes
Creators: name: Sadeghi, Jafar
name: Afshar, Mohammad Ali S.
name: Gashti, Saeed Noori
name: Alipour, Mohammad Reza
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It was shown that a standard ring of light can be imagined outside the event horizon for stationary rotating four-dimensional black holes with axial symmetry using the topological method\cite{001,002}. Based on this concept, in this paper, we investigate the topological charge and the conditions of existence of the photon sphere (PS) for a hyperscaling violation (HSV) black hole with various values of the parameters of this model. Then, after carrying out a detailed analysis, we show the conventional topological classes viz $Q=-1$ for the mentioned black hole and $Q=0$ for the naked singularities. \textit{Also, we propose a new topological class for naked singularities (Q=+1) with respect to $z\geq1$. We also determined that $z\geq2$, it either shows a naked singularity form with total topological charge $+1$ or has no solution. Therefore, we have the black hole solution only in $1\leq z<2$}. Then, we will use two different methods, namely the temperature (Duan's topological current $Φ$-mapping theory) and the generalized Helmholtz free energy method, to study the topological classes of our black hole. We discuss the critical and zero points (topological charges and topological numbers) for different parameters of hyperscaling violating black holes, such as ($z, \overlineθ$) and other free parameters, and study their thermodynamic topology. We observe that for a given value of the parameters $1\leq z<2$, $\overlineθ$, and other free parameters, there exist two total topological charges $(Q_{total}=-1, 0)$ with the same phase structure for the $T$ method and total topological numbers $(W=+1)$ for the generalized Helmholtz free energy method. Additionally, we summarize the results for each study as photon sphere, temperature, and generalized Helmholtz free energy in some figures and tables. Finally, we compare our findings with other related studies in the literature.
description: 40 pages, 21 figures and 12 tables. Accepted for publication in Astroparticle Physics
Effective Field Theory of Gravity: Leading Quantum Gravitational Corrections to Newtons and Coulombs Law
Creators: name: Faller, Sven
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we consider general relativity and its combination with scalar quantum electrodynamics (QED) as an effective quantum field theory at energies well below the Planck scale. This enables us to compute the one-loop quantum corrections to the Newton and Coulomb potential induced by the combination of graviton and photon fluctuations. We derive the relevant Feynman rules and compute the nonanalytical contributions to the one-loop scattering matrix for charged scalars in the nonrelativistic limit. In particular, we derive the post-Newtonian corrections of order $Gm/\text c^2 r$ from general relativity and the genuine quantum corrections of order $G\hbar/\text c^3 r^2$.
description: 14 pages, 12 figures
Esercizi virtuosi di paesaggio
Creators: name: Gamba, Simone
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2016

description: A settembre, il cuore della Città Alta di Bergamo, Piazza Vecchia, diventa
teatro dell’evento “i Maestri del Paesaggio”. Una rassegna trasversale che, da
alcuni anni a questa parte, propone diverse iniziative di cultura e intrattenimento:
giochi di luce, conferenze, esposizioni, eventi di moda, il tutto caratterizzato
dall’aggettivo “verde”. L’attrazione principale dell’evento – ed è a
questo che rivolgiamo la nostra attenzione – è una passerella ondulata che
riproduce la natura orobica per rappresentarne la biodiversità e, al contempo,
vuole dialogare con la storia e l’architettura della piazza.
description: Semestrale di studi e ricerche di geografia, N. 2 (2016)
Adolfo Pérez Esquivel, “Defend this little planet called Earth”: lectio magistralis at “La Sapienza” (Rome, 21 May 2016)
Creators: name: Pavia, Davide
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2016

description: Adolfo Pérez Esquivel, the Nobel Peace Prize for 1980, took the floor in
the lecture hall of the Faculty of Letters of Rome’s University, “La
Sapienza”, the morning of 6th of June 2016. As the rector Eugenio
Gaudio said during his introductory speech, there could not be a better
place than that very one to host such a lectio magistralis: a lecture about
mankind, which is the fundamental element of all the faculty’s curricula.
description: Semestrale di studi e ricerche di geografia, N. 2 (2016)
On the giant magnon and spike solutions for strings on AdS$_3\times$ S$^3$
Creators: name: Lee, Bum-Hoon
name: Nayak, Rashmi R.
name: Panigrahi, Kamal L.
name: Park, Chanyong
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study solutions for the rotating strings on the sphere with a background NS-NS field and on the Anti-de-Sitter spacetime. We show the existence of magnon and single spike solutions on R$\times$S$^2$ in the presence of constant magnetic field as two limiting cases. We also study the solution for strings on AdS$_3\times$ S$^3$ with Melvin deformation. The dispersion relations among various conserved charges are shown to receive finite corrections due to the deformation parameter. We further study the rotating string on AdS$_3 \times$ S$^3$ geometry with two conserved angular momenta on S$^3$ and one spin along the AdS$_3$. We show that there exists two kinds of solutions: a circular string solution and a helical string. We find out the dispersion relation among various charges and give physical interpretation of these solutions.
description: 18 pages, 1 figure, typos fixed, minor changes, to appear in JHEP
New evidence for halo gas accretion onto disk galaxies
Creators: name: Fraternali, Filippo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Studies of the halo gas in the Milky Way and in nearby spiral galaxies show the presence of gas complexes that cannot be reconciled with an internal (galactic fountain) origin and are direct evidence of gas accretion. Estimating gas accretion rates from these features consistently gives values, which are one order of magnitude lower than what is needed to feed the star formation. I show that this problem can be overcome if most of the accretion is in fact "hidden" as it mixes with the galactic fountain material coming from the disk. This model not only provides an explanation for the missing gas accretion but also reproduces the peculiar kinematics of the halo gas in particular the vertical rotation gradient. In this view this gradient becomes indirect evidence for gas accretion.
description: 7 pages, 5 figures. Invited talk at IAU 254 "The Galaxy Disk in Cosmological Context", Copenhagen, June 9-13, 2008
Optical variabilities in Be/X-ray binary system:GRO J2058+42
Creators: name: Kiziloglu, U.
name: Kiziloglu, N.
name: Baykal, A.
name: Yerli, S. K.
name: Ozbey, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of long-term optical monitoring observations and optical spectroscopic observations of the counterpart to CXOU J205847.5+414637 (high mass X-ray binary system). We search for a variability in the light curve of Be star. We used differential magnitudes in the time series analysis. The variability search in the optical light curve was made by using different algorithms. The reduction and analysis of spectra were done by using MIDAS and its suitable packages. We have performed a frequency search which gave us the value 2.404 1/day. This value is attributed to the non-radial pulsation of Be star. H alpha emission line profiles always show double-peaked emissions with a mean equivalent width of 2.31 \pm 0.19 Å~and a peak separation of 516 \pm 45 km/s. This suggests that Be star disk is still present. CXOU J205847.5+414637 is in X-ray quiescent state.
description: 8 pages, 9 figures. To appear at Astronomy and Astrophysics
Strategies to evaluate potential effector function of glycan variants: A case study of ordesekimab (AMG 714 or PRV-015)
Creators: name: Wei, Yu-Ling
name: Wegesser, Teresa
name: Kuhns, Scott
name: Werner, Jonathan
name: Lebrec, Hervé
name: Wang, Xiaoting
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: The potential for effector functions of therapeutic antibodies, including antibody-dependent cell-mediated cytotoxicity (ADCC), is a biological activity of interest for characterization, regardless of if ADCC is an intended primary pharmacological effect. The composition of the conserved antibody Fc glycan can vary as a function of post-translational processing which may affect the binding affinity to Fc receptors, leading to a change of effector activity. Ordesekimab (AMG 714 or PRV-015), a fully human immunoglobulin G1-kappa anti-interleukin (IL)-15 monoclonal antibody, is in clinical development for celiac disease. The binding of ordesekimab to IL-15 inhibits the interaction of IL-15 with the IL-2Rβ and common γ chain of the IL-15 receptor complex, but not with the IL-15Rα chain. Therefore, the simultaneous binding of ordesekimab to the Fcγ receptor (R) IIIα expressed on natural killer (NK) cells and to the IL-15/IL-15Rα complex on cells such as monocytes may theoretically enable ADCC toward the IL-15Rα-expressing cells. The high mannose (HM) levels on the Fc glycan were found to vary in different lots of ordesekimab resulting from refinements to the manufacturing process, and the impact on ordesekimab-mediated ADCC activity was evaluated in in vivo and in vitro studies. A review of nonclinical and clinical data found no evidence of ordesekimab-induced depletion of monocytes, or cytotoxicity in organs with wide IL-15Rα expression, suggesting a lack of in vivo ADCC activity. In addition, in vitro peripheral blood mononuclear cells-based ADCC assay did not reveal any cytolytic effect of ordesekimab with various levels of HM content when cocultured with recombinant human IL-15. Taken together, these data demonstrate that ADCC is not a potential liability for ordesekimab and does not contribute to the reduction of IL-15-mediated inflammation, the intended pharmacological effect.
Optical response of ferromagnetic YTiO_3 studied by spectral ellipsometry
Creators: name: Kovaleva, N. N.
name: Boris, A. V.
name: Yordanov, P.
name: Maljuk, A.
name: Brüchner, E.
name: Strempfer, J.
name: Konuma, M.
name: Zegkinoglou, I.
name: Bernhard, C.
name: Stoneham, A. M.
name: Keimer, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have studied the temperature dependence of spectroscopic ellipsometry spectra of an electrically insulating, nearly stoichiometric YTiO_3 single crystal with ferromagnetic Curie temperature T_C = 30 K. The optical response exhibits a weak but noticeable anisotropy. Using a classical dispersion analysis, we identify three low-energy optical bands at 2.0, 2.9, and 3.7 eV. Although the optical conductivity spectra are only weakly temperature dependent below 300 K, we are able to distinguish high- and low-temperature regimes with a distinct crossover point around 100 K. The low-temperature regime in the optical response coincides with the temperature range in which significant deviations from Curie-Weiss mean field behavior are observed in the magnetization. Using an analysis based on a simple superexchange model, the spectral weight rearrangement can be attributed to intersite d_i^1d_j^1 \longrightarrow d_i^2d_j^0 optical transitions. In particular, Kramers-Kronig consistent changes in optical spectra around 2.9 eV can be associated with the high-spin-state (^3T_1) optical transition. This indicates that other mechanisms, such as weakly dipole-allowed p-d transitions and/or exciton-polaron excitations, can contribute significantly to the optical band at 2 eV. The recorded optical spectral weight gain of 2.9 eV optical band is significantly suppressed and anisotropic, which we associate with complex spin-orbit-lattice phenomena near ferromagnetic ordering temperature in YTiO_3.
Gauss-Bonnet solution with a cloud of strings in de Sitter and anti-de Sitter space
Creators: name: Zhai, Wenxi
name: Zhang, Xiangdong
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we present exact spherically symmetric Gauss-Bonnet black hole solutions surrounded by a cloud of strings fluid with cosmological constant in $D>4$ dimensions. Both charged and uncharged cases are considered. We focus on the de Sitter solutions in the main text and leave the Anti-de Sitter solutions in the appendix. We analyze the features of thermodynamic properties of the black hole solutions. The mass, Hawking temperature as well as thermal stability and the phase transitions are discussed. Moreover, the equation of state and critical phenomena associated with these solutions are also explored.
description: 16 pages, 7 figures
The Exceptionally Large Debris Disk around γOphiuchi
Creators: name: Su, K. Y. L.
name: Rieke, G. H.
name: Stapelfeldt, K. R.
name: Smith, P. S.
name: Bryden, G.
name: Chen, C. H.
name: Trilling, D. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Spitzer images resolve the debris disk around γOphiuchi at both 24 and 70 um. The resolved images suggest a disk radius of ~520 AU at 70 um and >=260 AU at 24 um. The images, along with a consistent fit to the spectral energy distribution of the disk from 20 to 350 um, show that the primary disk structure is inclined by ~50 degree from the plane of the sky at a position angle of 55+/-2 degree. Among a group of twelve debris disks that have similar host star spectral types, ages and infrared fractional luminosities, the observed sizes in the infrared and color temperatures indicate that evolution of the debris disks is influenced by multiple parameters in addition to the proto-planetary disk initial mass.
description: Accepted to ApJ Letters
Embedding Reservoirs in Industrial Models to Exploit their Flexibility
Creators: name: Cuvelier, Thibaut
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the context of energy transition, industrial plants that heavily rely on electricity face more and more price volatility. To continue operating in these conditions, the directors become continually more willing to increase their flexibility, i.e. their ability to react to price fluctuations. This work proposes an intuitive methodology to mathematically model electro-intensive processes in order to assess their flexibility potential. To this end, we introduce the notion of reservoir, a storage of either material or energy, that allows models based on this paradigm to have interpretations close to the physics of the processes. The design of the reservoir methodology has three distinct goals: (i) to be easy and quick to build by an energy-sector consultant; (ii) to be effortlessly converted into mixed-integer linear or nonlinear programs; (iii) to be straightforward to understand by nontechnical people, thanks to their graphic nature. We apply this methodology to two industrial case studies, namely an induction furnace (linear model) and an industrial cooling installation (nonlinear model), where we can achieve significant cost savings. In both cases, the models can be quickly written using our method and solved by appropriate solver technologies.
"L’altra Italia. Emigrazione storica e mobilità giovanile a confronto" di Stefano Pelaggi
Creators: name: Natalizia, Gabriele
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: Dal volume di Stefano Pelaggi «Laltra Italia  Emigrazione storica e
mobilità giovanile a confronto» emerge una forte volontà di aprire un dibattito nel mondo politico ed in particolare in quello delle istituzioni dedicate allemigrazione sul ruolo degli italiani nel mondo allinterno della nostra società, sulle prospettive delle politiche dedicate ai nostri connazionali allestero e sulle implicazioni di questi temi con la mobilità
giovanile contemporanea.
description: Semestrale di studi e ricerche di geografia, N. 1 (2011): La costruzione delle biografie territoriali: archivi e rappresentazione a cura di Marco Maggioli
"Tipologie edilizie e interventi di miglioramento strutturale" di L. Santoro; "Edifici antisismici in cemento armato" di A. Ghersi e P. Lenza; "Edifici in muratura in zona sismica" di L. Boscotrecase e  F. Piccarreta
Creators: name: Pesaresi, Cristiano
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: I manuali in oggetto  tutti pubblicati dalla stessa casa editrice  costituiscono un cofanetto di saperi fondamentali, sia per i progettisti, che necessitano di un'ampia gamma di variegate conoscenze per costruire nuove abitazioni secondo consoni criteri e per appurare lo stato di conservazione dell'esistente, sia per i decisori politici, che di frequente devono confrontarsi con le drammatiche conseguenze prodotte dai terremoti, sia per gli studiosi interessati al rischio sismico e alla pianificazione.
description: Semestrale di studi e ricerche di geografia, N. 1 (2011): La costruzione delle biografie territoriali: archivi e rappresentazione a cura di Marco Maggioli
Pressure-induced Superconductivity in Zintl Topological Insulator SrIn2As2
Creators: name: Cao, Weizheng
name: Yang, Haifeng
name: Li, Yongkai
name: Pei, Cuiying
name: Wang, Qi
name: Zhao, Yi
name: Li, Changhua
name: Zhang, Mingxin
name: Zhu, Shihao
name: Wu, Juefei
name: Zhang, Lili
name: Wang, Zhiwei
name: Yao, Yugui
name: Liu, Zhongkai
name: Chen, Yulin
name: Qi, Yanpeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Zintl compound AIn2X2 (A = Ca, Sr, and X = P, As), as a theoretically predicted new non-magnetic topological insulator, requires experiments to understand their electronic structure and topological characteristics. In this paper, we systematically investigate the crystal structures and electronic properties of the Zintl compound SrIn2As2 under both ambient and high-pressure conditions. Based on systematic angle-resolved photoemission spectroscopy (ARPES) measurements, we observed the topological surface states on its (001) surface as predicted by calculations, indicating that SrIn2As2 is a strong topological insulator. Interestingly, application of pressure effectively tuned the crystal structure and electronic properties of SrIn2As2. Superconductivity is observed in SrIn2As2 for pressure where the temperature dependence of the resistivity changes from a semiconducting-like behavior to that of a metal. The observation of nontrivial topological states and pressure-induced superconductivity in SrIn2As2 provides crucial insights into the relationship between topology and superconductivity, as well as stimulates further studies of superconductivity in topological materials.
description: 15 pages,5 figures
Strategies to evaluate potential effector function of glycan variants: a case study of ordesekimab (AMG 714 or PRV-015)
Creators: name: Wei, Yu-Ling
name: Wegesser, Teresa
name: Kuhns, Scott
name: Werner, Jonathan
name: Lebrec, Hervé
name: Wang, Xiaoting
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: The potential for effector functions of therapeutic antibodies, including antibody-dependent cell-mediated cytotoxicity (ADCC), is a biological activity of interest for characterization, regardless of if ADCC is an intended primary pharmacological effect. The composition of the conserved antibody Fc glycan can vary as a function of post-translational processing which may affect the binding affinity to Fc receptors, leading to a change of effector activity. Ordesekimab (AMG 714 or PRV-015), a fully human immunoglobulin G1-kappa anti-interleukin (IL)-15 monoclonal antibody, is in clinical development for celiac disease. The binding of ordesekimab to IL-15 inhibits the interaction of IL-15 with the IL-2Rβ and common γ chain of the IL-15 receptor complex, but not with the IL-15Rα chain. Therefore, the simultaneous binding of ordesekimab to the Fcγ receptor (R) IIIα expressed on natural killer (NK) cells and to the IL-15/IL-15Rα complex on cells such as monocytes may theoretically enable ADCC toward the IL-15Rα-expressing cells. The high mannose (HM) levels on the Fc glycan were found to vary in different lots of ordesekimab resulting from refinements to the manufacturing process, and the impact on ordesekimab-mediated ADCC activity was evaluated in in vivo and in vitro studies. A review of nonclinical and clinical data found no evidence of ordesekimab-induced depletion of monocytes, or cytotoxicity in organs with wide IL-15Rα expression, suggesting a lack of in vivo ADCC activity. In addition, in vitro peripheral blood mononuclear cells-based ADCC assay did not reveal any cytolytic effect of ordesekimab with various levels of HM content when cocultured with recombinant human IL-15. Taken together, these data demonstrate that ADCC is not a potential liability for ordesekimab and does not contribute to the reduction of IL-15-mediated inflammation, the intended pharmacological effect.
Motion of an impurity particle in an ultracold quasi-one-dimensional gas of hard-core bosons
Creators: name: Girardeau, M. D.
name: Minguzzi, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The low-lying eigenstates of a one-dimensional (1D) system of many impenetrable point bosons and one moving impurity particle with repulsive zero-range impurity-boson interaction are found for all values of the impurity-boson mass ratio and coupling constant. The moving entity is a polaron-like composite object consisting of the impurity clothed by a co-moving gray soliton. The special case with impurity-boson interaction of point hard-core form and impurity-boson mass ratio $m_i/m$ unity is first solved exactly as a special case of a previous Fermi-Bose (FB) mapping treatment of soluble 1D Bose-Fermi mixture problems. Then a more general treatment is given using second quantization for the bosons and the second-quantized form of the FB mapping, eliminating the impurity degrees of freedom by a Lee-Low-Pines canonical transformation. This yields the exact solution for arbitrary $m_i/m$ and impurity-boson interaction strength.
description: 4 pp., 2 figures, revtex4; error in Eq.(6) corrected and derivation simplified