cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gefitinib and Radiotherapy in patients with locally advanced inoperable squamous cell carcinoma of the head and neck
Creators: name: Romano, Carmela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2008

description: Introduction: Gefitinib, an orally active epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, induces growth arrest in squamous cancer cell carcinoma of head and neck (SCCHN) cell lines mainly by blocking cells in G1 and preventing them from entering the cell cycle. Clinical studies have demonstrated the activity of gefitinib monotherapy in SCCHN. Preclinical studies have shown that the combination of radiotherapy (RT) and drugs interfering with the EGF pathway may result in radiosensitization in squamous cell carcinomas that over express EGFR.
Purpose: Two different doses of gefitinib, administered along with standard radiation therapy, were tested in locally advanced inoperable head and neck cancer who have neiver received radiotherapy or chemotherapy or undergone surgery for head and neck carcinoma, with the aim of finding the maximum tolerated dose and assessing the toxicity and activity of the combination.
Patients and methods: The standard “3+3” design was used for the phase I study. Radiation therapy was given according to conventional dose and schedule. Gefitinib dose escalation was stopped if more than a third of patients of a given cohort had dose limiting toxicity (DLT).
Results: DLT was observed in 3 out of 4 patients treated at the dose of 500 mg and included grade 3 stomatitis in 3 patients and grade 3 liver toxicities in 1 patient. The dose level of 250 mg was recommended for the phase II study. Six confirmed objective responses were observed among 16 patients. Four patients had a complete response, which was confirmed in three cases; eight patients had a partial response, which was not confirmed in six patients. Stable disease and disease progression were observed in one and three patients, respectively. Median duration of response was 5.4 (range: 1–21) months. The observed stable disease lasted 7.4 months. The median progression free-survival was 6.7 months (95% CI: 4.5–12.1) and the median OS was 8.5 months.
Conclusion: Our results do not support further trials with gefitinib and radiation therapy, according to our schedule, in this patient population. Integration of gefitinib within chemoradiotherapy regimens and combination with other biological therapies may represent the next challenge.
The Average Kinetic Energy of the Heavy Quark in $Λ_b$ in the Bethe-Salpeter Equation Approach
Creators: name: Guo, Xin-Heng
name: Wu, Heng-Kui
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the previous paper, based on the $SU(2)_{f}\times SU(2)_{s}$ heavy quark symmetries of the QCD Lagrangian in the heavy quark limit, the Bethe-Salpeter equation for the heavy baryon $Λ_b$ was established with the picture that $Λ_b$ is composed of a heavy quark and a scalar light diquark. In the present work, we apply this model to calculate $μ_π^2$ for $Λ_b$, the average kinetic energy of the heavy quark inside $Λ_{b}$. This quantity is particularly interesting since it can be measured in experiments and since it contributes to the inclusive semileptonic decays of $Λ_b$ when contributions from higher order terms in $1/M_b$ expansions are taken into account and consequently influences the determination of the Cabibbo-Kobayashi-Maskawa matrix elements $V_{ub}$ and $V_{cb}$. We find that $μ_π^2$ for $Λ_b$ is $0.25GeV^2$ $\sim$ $0.95GeV^2$, depending on the parameters in the model including the light diquark mass and the interaction strength between the heavy quark and the light diquark in the kernel of the BS equation. We also find that this result is consistent with the value of $μ_π^2$ for $Λ_b$ which is derived from the experimental value of $μ_π^2$ for the $B$ meson with the aid of the heavy quark effective theory.
description: 19 pages, 2 figures, accepted for publication in Phys. Lett. B
Utilizzo di una Superossidodismutasi modificata ottenuta in forma ricombinante (rMnSod) come agente antineoplastico e marker tumorale per neoplasie mammarie canine estrogeno-positive
Creators: name: Sica, Alessandro
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2008

description: Nel presente lavoro viene studiato l'utilizzo diagnostico di un’isoforma ricombinante di una superossidodismutasi isolata da liposarcoma umano (rMnSod) utilizzabile come marker tumorale per neoplasie mammarie canine sovraesprimenti recettori per estrogeni.
Le capacità citostatiche e selettive Er+ di tale proteina sono state valutate in esperimenti “in vitro” prima su colture cellulari “MCF-7”e “in vivo” poi. In questo lavoro vengono descritte le pratiche diagnostiche e l’utilizzo della proteina marcata con Gallio 68 in cinque cagne sottoposte ad indagine PET di cui si è voluto dimostrare la captazione neoplastica della molecola.
Exploring the stellar rotation of early-type stars in the LAMOST Medium-Resolution Survey. I. Catalog
Creators: name: Sun, Weijia
name: Duan, Xiao-Wei
name: Deng, Licai
name: de Grijs, Richard
name: Zhang, Bo
name: Liu, Chao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We derive stellar parameters and abundances (`stellar labels') of 40,034 late-B and A-type main-sequence stars extracted from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope Medium Resolution Survey (LAMOST--MRS). The primary selection of our early-type sample was obtained from LAMOST Data Release 7 based on spectral line indices. We employed the Stellar LAbel Machine (SLAM) to derive their spectroscopic stellar parameters, drawing on Kurucz spectral synthesis models with 6000 K $< T_\mathrm{eff}
description: 18 pages, 10 figures, 1 table. Accepted for publication in ApJS
The Transport Capacity of a Wireless Network is a Subadditive Euclidean Functional
Creators: name: Ganti, Radha Krishna
name: Haenggi, Martin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The transport capacity of a dense ad hoc network with n nodes scales like \sqrt(n). We show that the transport capacity divided by \sqrt(n) approaches a non-random limit with probability one when the nodes are i.i.d. distributed on the unit square. We prove that the transport capacity under the protocol model is a subadditive Euclidean functional and use the machinery of subadditive functions in the spirit of Steele to show the existence of the limit.
La formazione matematica dei docenti di Scuola Primaria come problema pedagogico. Uno studio nel contesto della formazione continua in Portogallo.
Creators: name: Pezzia, Maria
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: La tesi affronta con un taglio pedagogico il problema della formazione matematica degli insegnanti di scuola primaria e in particolare della formazione in servizio. L'oggetto di studio è il Programa de Formação Continua em Matemática (PFCM) sviluppato in Portogallo, scelto per le sue caratteristiche innovative. L'obiettivo dello studio è quello di indagare i cambiamenti nella visione della matematica e del suo insegnamento,  nelle percezioni di autoefficacia e nelle disposizioni emozionali nel contesto dell'attività matematica, realizzatisi nei partecipanti al PFCM. Il quadro teorico di riferimento unisce due aree di ricerca differenti: gli studi teorici ed empirici sulla formazione degli insegnanti e  l'area di ricerca sui fattori affettivi in educazione matematica, con una particolare attenzione all'influenza delle concezioni epistemologiche dei docenti sulle loro pratiche didattiche e pedagogiche. La ricerca si è sviluppata su due binari complementari ma integrati: i) analisi critica dei documenti interni e dei risultati delle ricerche esistenti sul PFCM.  L'analisi è collocata nel contesto più ampio della formazione continua in Portogallo, di cui si considerano le radici storiche e le normative attuali, comparate con quelle italiane. ii) Studio di casi individuali, improntato ad un approccio interpretativo e condotto attraverso metodi di analisi narrativa.
A Novel Fully Human Antitumor ImmunoRNase Targeting ErbB2-Positive Tumors
Creators: name: Borriello, Marianna
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: A second generation anti-ErbB2 ImmunoRNase, called Erb-hcAb-RNase, was obtained by the fusion of Erb-hcAb, a human compact anti-ErbB2 antibody, with human pancreatic ribonuclease (HP-RNase or RNase 1).
We show herein that Erb-hcAb-RNase retains the enzymatic activity of human pancreatic RNase and specifically binds to ErbB2-positive cells with an affinity comparable to that of the parental Erb-hcAb. Moreover, this novel immunoRNase is endowed with an effective and selective antiproliferative action for ErbB2-positive tumor cells both in vitro and in vivo. Its antitumor activity is more potent than that of the parental Erb-hcAb as the novel immunoconjugate has acquired RNase-based cytotoxicity in addition to the inhibitory growth effects, antibody-dependent and complement-dependent cytotoxicity of the compact antibody.
Erb-hcAb-RNase could be a promising candidate for the immunotherapy of ErbB2-positive tumours as it combines the advantages of the first generation scFv-based immunoRNase with those of a fully functional antibody
TopicsRanksDC: Distance-based Topic Ranking applied on Two-Class Data
Creators: name: Yousef, Malik
name: Qundus, Jamal Al
name: Peikert, Silvio
name: Paschke, Adrian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we introduce a novel approach named TopicsRanksDC for topics ranking based on the distance between two clusters that are generated by each topic. We assume that our data consists of text documents that are associated with two-classes. Our approach ranks each topic contained in these text documents by its significance for separating the two-classes. Firstly, the algorithm detects topics using Latent Dirichlet Allocation (LDA). The words defining each topic are represented as two clusters, where each one is associated with one of the classes. We compute four distance metrics, Single Linkage, Complete Linkage, Average Linkage and distance between the centroid. We compare the results of LDA topics and random topics. The results show that the rank for LDA topics is much higher than random topics. The results of TopicsRanksDC tool are promising for future work to enable search engines to suggest related topics.
description: 10 pages, 5 figures
Derivation of the Recursion Relation for the Feynman Diagrams of the CJT effective action
Creators: name: Kim, Chungku
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive a new recursion relation to obtain the Feynman diagrams of the Cornwall-Jackiw-Toumboulis(CJT) effective action by using the functional derivative identities. By using this recursion relation we show the two-particle-irreducibility of the Feynman diagrams of the CJT effective action by induction. We apply the recursion relation to obtain the Feynman diagrams of the CJT effective action up to the four-loop order in case of the bosonic field theory.
description: 7 pages, 2 figures
La tecnologia delle gridshell. Sperimentazione di un sistema di copertura "automontante".
Creators: name: D'Angelo, Pia
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: La ricerca indaga la tecnologia delle grid-shell  in legno, strutture resistenti per forma, ottenute a partire da un reticolo piano bidimensionale, gradualmente deformato fino al raggiungimento di una configurazione finale a doppia curvatura. Il particolare  processo costruttivo è studiato attraverso l’analisi di  due casi studio, ovvero il Mannhein Lattice Shell e il Downland Open Air Museum, strutture realizzate rispettivamente secondo il metodo up-ward (verso l’alto)  e down-ward, (verso il basso).  La ricerca,  evidenziati alcuni limiti di tali metodi di montaggio propone un processo costruttivo innovativo, verificato  mediante la sperimentazione di un sistema di copertura prefabbricato, dispiegabile e “auto-montante”, condotta con il supporto dell’azienda produttrice di strutture in legno Holzbau sud.
A Josephson Junction Microscope for Low-frequency Fluctuators
Creators: name: Tian, L.
name: Simmonds, R. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The high-Q harmonic oscillator mode of a Josephson junction can be used as a novel probe of spurious two-level systems (TLSs) inside the amorphous oxide tunnel barriers of the junction. In particular, we show that spectroscopic transmission measurements of the junction resonator mode can reveal how the coupling magnitude between the junction and the TLSs varies with an external magnetic field applied in the plane of the tunnel barrier. The proposed experiments offer the possibility of clearly resolving the underlying coupling mechanism for these spurious TLSs, an important decoherence source limiting the quality of superconducting quantum devices.
description: 4 pages, 3 figures
Exploring the stellar rotation of early-type stars in the LAMOST Medium-Resolution Survey. II. Statistics
Creators: name: Sun, Weijia
name: Duan, Xiao-Wei
name: Deng, Licai
name: de Grijs, Richard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Angular momentum is a key property regulating star formation and evolution. However, the physics driving the distribution of the stellar rotation rates of early-type main-sequence stars is as yet poorly understood. Using our catalog of 40,034 early-type stars with homogeneous $v\sin i$ parameters, we review the statistical properties of their stellar rotation rates. We discuss the importance of possible contaminants, including binaries and chemically peculiar stars. Upon correction for projection effects and rectification of the error distribution, we derive the distributions of our sample's equatorial rotation velocities, which show a clear dependence on stellar mass. Stars with masses less than $2.5\ {M_\odot}$ exhibit a unimodal distribution, with the peak velocity ratio increasing as stellar mass increases. A bimodal rotation distribution, composed of two branches of slowly and rapidly rotating stars, emerges for more massive stars ($M>2.5\ {M_\odot}$). For stars more massive than $3.0\ {M_\odot}$, the gap between the bifurcated branches becomes prominent. For the first time, we find that metal-poor ([M/H] $< -0.2$ dex) stars only exhibit a single branch of slow rotators, while metal-rich ([M/H] $> 0.2$ dex) stars clearly show two branches. The difference could be attributed to unexpectedly high spin-down rates and/or in part strong magnetic fields in the metal-poor subsample.
description: 18 pages, 9 figures. Accepted for publication in ApJ; revised references for section 3.2
Mechanisms linking glucotoxicity to the development of insulin resistance: a role for the endoplasmic reticulum stress
Creators: name: Iadicicco, Claudia
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Aims/hypothesis: Glucosamine, generated during hyperglycaemia, causes insulin resistance in different cells. Here we sought to evaluate the possible role of ER stress in the induction of insulin-resistance by glucosamine in skeletal muscle cells. Methods: Real-time RT-PCR analysis, 2-deoxy-D-glucose uptake and western blot analysis were carried out in rat and human muscle cell lines. Results: Glucosamine treatment causes both in rat and human myotubes a significant increase in the expression of the ER stress markers BIP, XBP1 and ATF6. In addition, glucosamine impairs insulin-stimulated 2-deoxyglucose uptake both in rat and human myotubes. Interestingly, pre-treatment of both rat and human myotubes with the chemical chaperones PBA or TUDCA, completely prevents the effect of glucosamine on both ER stress induction and insulin-induced glucose uptake. Glucosamine treatment reduces GLUT4 mRNA and protein levels and the mRNA levels of the main regulators of GLUT4 gene, MEF2A and PGC1α, both in rat and human myotubes. Again, PBA or TUDCA pre-treatment prevents glucosamine-induced inhibition of GLUT4, MEF2A and PGC1α. Finally, we show that overexpression of ATF6 is sufficient to inhibit the expression of Glut4, Mef2a and Pgc1a and that ATF6 silencing with a specific siRNA is sufficient to completely prevent glucosamine-induced inhibition of Glut4, Mef2a and Pgc1a in skeletal muscle cells. Conclusions/interpretation: In this work we show that glucosamine-induced ER stress causes insulin-resistance both in human and rat myotubes and impairs GLUT4 expression and insulin-induced glucose uptake via an ATF6-dependent decrease of the Glut4 regulators Mef2a and Pgc1a
Interactive diachronic maps of the WoPoss modal markers
Creators: name: , Marongiu
name: , Dell'Oro
Publisher: name: Zenodo
Year: 2021
Subjects: diachronic semantics
modality
Latin language
diachronic maps

description: In this dataset the user will find a collection of 75 interactive diachronic maps of the lexical modal markers analyzed in the framework of the WoPoss project (https://woposs.unine.ch/). The drawing of the maps is based on the descriptions of the lemmas in the Thesaurus Linguae Latinae, combined with the personal analysis of the relevant Latin passages carried out by the authors. As the Thesaurus Linguae Latinae is still under construction, for the lemmas nolo, (ne)queo, usus, valeo, volo and voluntas we relied on the Oxford Latin Dictionary. The maps are in json format and can be visualized on the Pygmalion platform at https://woposs.unine.ch/map.php. More detailed information is provided in the README file.
Flows and Non-thermal Velocities in Solar Active Regions Observed with the Extreme-ultraviolet Imaging Spectrometer on Hinode: A Tracer of Active Region Sources of Heliospheric Magnetic Fields?
Creators: name: Doschek, G. A.
name: Warren, H. P.
name: Mariska, J. T.
name: Muglach, K.
name: Culhane, J. L.
name: Hara, H.
name: Watanabe, T
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: From Doppler velocity maps of active regions constructed from spectra obtained by the Extreme-ultraviolet Imaging Spectrometer (EIS) on the Hinode spacecraft we observe large areas of outflow (20-50 km/s) that can persist for at least a day. These outflows occur in areas of active regions that are faint in coronal spectral lines formed at typical quiet Sun and active region temperatures. The outflows are positively correlated with non-thermal velocities in coronal plasmas. The bulk mass motions and non-thermal velocities are derived from spectral line centroids and line widths, mostly from a strong line of Fe XII at 195.12 Angstroms. The electron temperature of the outflow regions estimated from an Fe XIII to Fe XII line intensity ratio is about 1.2-1.4 MK. The electron density of the outflow regions derived from a density sensitive intensity ratio of Fe XII lines is rather low for an active region. Most regions average around 7E10+8 cm(-3), but there are variations on pixel spatial scales of about a factor of 4. We discuss results in detail for two active regions observed by EIS. Images of active regions in line intensity, line width, and line centroid are obtained by rastering the regions. We also discuss data from the active regions obtained from other orbiting spacecraft that support the conclusions obtained from analysis of the EIS spectra. The locations of the flows in the active regions with respect to the longitudinal photospheric magnetic fields suggest that these regions might be tracers of long loops and/or open magnetic fields that extend into the heliosphere, and thus the flows could possibly contribute significantly to the solar wind.
description: one tex file, 11 postscript figure files
Leluthia Cameron 1887
Creators: name: Li, Tao
name: Achterberg, Cornelis Van
name: Xu, Zhi-Chun
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Leluthia

description: Genus Leluthia Cameron, 1887
(Figs 1–12)
 Leluthia Cameron, 1887: 392. Type species (designated by Viereck, 1914): Leluthia mexicana Cameron, 1887 (examined).
 Doryctosoma Picard, 1938: 142. Type species (by monotypy): Doryctosoma paradoxum Picard, 1938 (examined). Treated as synonym of Euhecabolodes Tobias, 1962, by Belokobylskij & Tobias (1986).
 Russellia Muesebeck, 1950: 78 (preoccupied by Russellia Varga, 1943). Type species (by original designation): Heterospilus astigma Ashmead, 1896. Synonymized by Marsh (1967).
 Russellella Muesebeck & Walkley, 1951: 178. New name for Russellia Muesebeck, 1950.
 Euhecabolodes Tobias, 1962: 1191. Type species (by original designation): Euhecabolodes minutus Tobias, 1962 (examined). Synonymized with Doryctosoma Picard, 1938, by Belokobylskij & Tobias (1986) and treated as subgenus of Leluthia Cameron, 1887, by Belokobylskij (1998).
 Panama Marsh, 1993: 27. Type species (by original designation): Panama canalia Marsh, 1993. Synonymized with Leluthia Cameron, 1887, by Belokobylskij et al. (2004).
 Diagnosis. First subdiscal cell of fore wing with distinct opening postero-apically, vein CU1b absent (Figs 11-12); vein 2-SR of fore wing complete; vein r-m of fore wing often absent or nearly so; vein 1-R1 of fore wing at most slightly longer than pterostigma; vein r of fore wing departing basally from middle from pterostigma; hind wing of ♂ with a pterostigma (Fig. 12); vein 1-M of hind wing shorter than vein M+CU (Fig. 11); vein 1r-m of hind wing slightly oblique and shorter than veins 1-M or SC+R; wings with distinct apical fringe of setae; vertex sculptured; mesoscutum with striae or rugae medio-posteriorly; mesosternal sulcus narrow; second tergite often with oblique sublateral grooves.
description: Published as part of Li, Tao, Achterberg, Cornelis Van & Xu, Zhi-Chun, 2015, A new species of genus Leluthia Cameron (Hymenoptera: Braconidae) parasitizing Agrilus sp. (Coleoptera: Buprestidae) from China with a key to the East Palaearctic species, pp. 594-600 in Zootaxa 4048 (4) on page 595, DOI: 10.11646/zootaxa.4048.4.10, http://zenodo.org/record/238627
The design of quantal response experiments and the modelling of quantal response experiments over time
Creators: name: Sitter, Randy Rudolf
Publisher: name: University of British Columbia
Year: 2010

description: The problem of designing a quantal response experiment when estimation of the median effective dose (ED50) is of main interest is examined. The asymptotic variances of the maximum likelihood estimators of the ED50 for various 3 and 5 point designs, using the logit model, are compared to the minimum possible which is achieved with an inadvisable 1 point design (Cher-noff[5]). Alternate criteria for choosing a design that attempt to incorporate goodness-of-fit of the model are then examined. The modelling of quantal response experiments observed over time is also considered. A growth-curve approach to this problem was suggested by Carter and Hubert[3], and applied to a data set. The feasibility of this approach is discussed, and a simpler, more direct approach is proposed. The two models are applied to the presented data set, and the resulting fits are compared. The model proposed here appears to fit the data better. Inference about the ED50 using the two models is also compared.
Pangolin Natural insect & termite controller: Causes and consequences of illegal trafficking
Creators: name: Vikas Sagar, Amol Rokde, Yash Sagar, Sparsh Dubey and Kapil Kaim
Publisher: name: The Science world a Monthly e magazine
Year: 2023

description: The Indian pangolin, also known as the Indian scaly anteater (Manis crassicaudata) is a species of pangolin native to the Indian subcontinent (Mahmood et al., 2019). Pangolins are unique mammals known for their protective scales and can consume up to 70 to 200 million insects annually hence they illustrate the crucial role in maintaining the balance of insect populations in their ecosystems. It’s important to recognize the valuable ecological service that pangolins provide by helping to control insect pests, such as ants and termites, which can have a significant impact on agricultural and forest ecosystems. This makes pangolins important contributors to ecosystem health and highlights the importance of their conservation.
On Two of Erdös's Open Problems
Creators: name: Smarandache, Florentin
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 11D85

description: In this short note we present some remarks and conjectures on two of Erdös's open problems in number theory.
description: 3 pages
The evolutionary status of the semiregular variable QYSge
Creators: name: Klochkova, V. G.
name: Panchuk, V. E.
name: Chentsov, E. L.
name: Yushkin, M. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Repeated spectroscopic observations made with the 6m telescope of yielded new data on the radial-velocity variability of the anomalous yellow supergiant QYSge. The strongest and most peculiar feature in its spectrum is the complex profile of NaI D lines, which contains a narrow and a very wide emission components. The wide emission component can be seen to extend from -170 to +120 km/s, and at its central part it is cut by an absorption feature, which, in turn, is split into two subcomponents by a narrow (16km/s at r=2.5) emission peak. An analysis of all the Vr values leads us to adopt for the star a systemic velocity of Vr=-21.1 km/s, which corresponds to the position of the narrow emission component of NaI. The locations of emission-line features of NaI D lines are invariable, which point to their formation in regions that are external to the supergiant's photosphere. Differential line shifts of about 10km/s are revealed. The absorption lines in the spectrum of QYSge have a substantial width of FWHM~45 km/s. The method of model atmospheres is used to determine the following parameters: Teff=6250K, lg g=2.0, and microturbulence Vt=4.5km/s. The metallicity of the star is found to be somewhat higher than the solar one with an average overabundance of iron-peak elements of [Met/H]=+0.20. The star is found to be slightly overabundant in carbon and nitrogen, [C/Fe]=+0.25, [N/Fe]=+0.27. The alpha-process elements Mg, Si, and Ca are slightly overabundant [alpha/H]=+0.12. The strong sodium excess, [Na/Fe]=+0.75, is likely to be due to the dredge-up of the matter processed in the NeNa cycle. Heavy elements of the s-process are underabundant relative to the Sun. On the whole, the observed properties of QYSge do not give grounds for including this star into the group of RCrB or RVTau-type type objects.
description: 29 pages, 8 figures, 4 tables; accepted by Astrophys. Bulletin
Time evolution of 1D gapless models from a domain-wall initial state: SLE continued?
Creators: name: Calabrese, Pasquale
name: Hagendorf, Christian
name: Doussal, Pierre Le
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the time evolution of quantum one-dimensional gapless systems evolving from initial states with a domain-wall. We generalize the path-integral imaginary time approach that together with boundary conformal field theory allows to derive the time and space dependence of general correlation functions. The latter are explicitly obtained for the Ising universality class, and the typical behavior of one- and two-point functions is derived for the general case. Possible connections with the stochastic Loewner evolution are discussed and explicit results for one-point time dependent averages are obtained for generic κfor boundary conditions corresponding to SLE. We use this set of results to predict the time evolution of the entanglement entropy and obtain the universal constant shift due to the presence of a domain wall in the initial state.
description: 27 pages, 10 figures
Antiferromagnetic Spin Fluctuations in the Metallic Phase of Quasi-Two-Dimensional Organic Superconductors
Creators: name: Yusuf, Eddy
name: Powell, B. J.
name: McKenzie, Ross H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We give a quantitative analysis of the previously published nuclear magnetic resonance (NMR) experiments in the k-(ET)2X family of organic charge transfer salts by using the phenomenological spin fluctuation model of Moriya, and Millis, Monien and Pines (M-MMP). For temperatures above T_nmr ~ 50 K, the model gives a good quantitative description of the data in the metallic phases of several k-(ET)2X materials. These materials display antiferromagnetic correlation lengths which increase with decreasing temperature and grow to several lattice constants by T_nmr. It is shown that the fact that the dimensionless Korringa ratio is much larger than unity is inconsistent with a broad class of theoretical models (such as dynamical mean-field theory) which neglects spatial correlations and/or vertex corrections. For materials close to the Mott insulating phase the nuclear spin relaxation rate, the Knight shift and the Korringa ratio all decrease significantly with decreasing temperature below T_nmr. This cannot be described by the M-MMP model and the most natural explanation is that a pseudogap, similar to that observed in the underdoped cuprate superconductors, opens up in the density of states below T_nmr. Such a pseudogap has recently been predicted to occur in the dimerised organic charge transfer salts materials by the resonating valence bond (RVB) theory. We propose specific new experiments on organic superconductors to elucidate these issues. For example, measurements to see if high magnetic fields or high pressures can be used to close the pseudogap would be extremely valuable.
description: 11 pages, 2 figures. Accepted for publication in Phys. Rev. B
Monte Carlo Studies of the Fundamental Limits of the Intrinsic Hyperpolarizability
Creators: name: Kuzyk, Mark C.
name: Kuzyk, Mark G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The off-resonant hyperpolarizability is calculated using the dipole-free sum-over-stats expression from a randomly chosen set of energies and transition dipole moments that are forced to be consistent with the sum rules. The process is repeated so that the distribution of hyperpolarizabilities can be determined. We find this distribution to be a cycloid-like function. In contrast to variational techniques that when applied to the potential energy function yield an intrinsic hyperpolarizability less than 0.71, our Monte Carlo method yields values that approach unity. While many transition dipole moments are large when the calculated hyperpolarizability is near the fundamental limit, only two excited states dominate the hyperpolarizability - consistent with the three-level ansatz.
description: 7 pages, 5 figures
Observation of excited states in a graphene quantum dot
Creators: name: Schnez, S.
name: Molitor, F.
name: Stampfer, C.
name: Guettinger, J.
name: Shorubalko, I.
name: Ihn, T.
name: Ensslin, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate that excited states in single-layer graphene quantum dots can be detected via direct transport experiments. Coulomb diamond measurements show distinct features of sequential tunneling through an excited state. Moreover, the onset of inelastic cotunneling in the diamond region could be detected. For low magnetic fields, the positions of the single-particle energy levels fluctuate on the scale of a flux quantum penetrating the dot area. For higher magnetic fields, the transition to the formation of Landau levels is observed. Estimates based on the linear energy-momentum relation of graphene give carrier numbers of the order of 10 for our device.
description: 3 pages, 3 figures
Wor(l)ds and meanings in the language of British and Indian university websites
Creators: name: Caiazzo, Luisa
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: The global economy  is having a tremendous impact on higher education due to increased trade, investment and mobility of people across borders. Making reference to recent studies which underline the potential of corpus linguistic methodologies for the study of language as a social phenomenon, this dissertation focuses on word meaning (some of the words analysed are 'international' and 'quality') in a small specialized corpus consisting of the About us section of 340 British and Indian university websites. The results suggest that some distinctive features can be identified in the two subcorpora and that differences in the cotextual environment seem to be related to different perspectives in the contextual environment.
Design and characterisation of photonic quasicrystals from microwave to optical regime
Creators: name: Thankamani, Priya Rose
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Photonic band-gap materials are artificially periodic engineered materials with which we can control and manipulate the electromagnetic radiation. The period photonic crystals are well known and have been studied for the last two decades. Recently Photonic structures lacking long-range translational order but with orientational order and higher-order rotational symmetries which are not compatible with the spatial periodicity, called “photonic quasi-crystals”(PQCs) in analogy with solid-state physics, are gaining a growing attention in view of their unique characteristics. This PhD work is devoted to the design and fabrication of photonic quasicrystals working in microwave and optical frequencies.
The effect of randomness on the quantum spin system Tl$_{1-x}$K$_x$CuCl$_3$ with ${\boldmath $x$}$ = 0.44 studied by the Zero-field Muon-Spin-Relaxation (ZF-$μ$SR) method
Creators: name: Suzuki, Takao
name: Yamada, Fumiko
name: Watanabe, Isao
name: Goto, Takayuki
name: Oosawa, Akira
name: Tanaka, Hidekazu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Zero-field muon-spin-relaxation (ZF-{\boldmath $μ$}SR) measurements were carried out down to 80 mK on the randomness bond system Tl$_{1-x}$K$_x$CuCl$_3$ with $x$ = 0.44. Time spectra are well fitted by the stretched exponential function $\exp (-λt)^β$. The muon spin relaxation rate $λ$ increases rapidly with decreasing temperature, and $β$ tends to 0.5 at 80 mK. The divergent increase of $λ$ suggests the critical slowing down of the frequency of the Cu-3{\it d} spin fluctuations toward a spin frozen state below 80 mK, and the root-exponential-like behavior of the time spectrum indicates that the origin of the relaxation is possibly the spatially-fixed fluctuating dilute moments.
description: Accepted on J. Phys. Soc. Jpn
Non-minimal Energy-momentum squared gravity
Creators: name: Shahidi, Shahab
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a gravitational theory with an additional non-minimal coupling between baryonic matter fields and geometry. The coupling is second order in the energy momentum tensor and can be seen as a generalization of the energy-momentum squared gravity model. We will add a constraint through a Lagrange multiplier to ensure the conservation of the energy-momentum tensor. Background cosmological implications together with its dynamical system analysis will be investigated in details. Also we will consider the growth of matter perturbation at first order, and estimate the model parameter from observations on $H$ and also $fσ_8$. We will show that the model parameter should be small and positive in 2$σ$ confidence interval. The theory is shown to be in a good agreement with observational data.
description: 10 pages, 7 figures
The Implementation and Legacy of Mexico’s Southern Border Program, PRP 208
Creators: name: Leutert, Stephanie
Publisher: name: LBJ School of Public Affairs
Year: 2019
Subjects: Texas
public affairs
Mexico
Border

description: Over the last two decades, Mexico has enacted multiple domestic programs and international initiatives to manage the movement of migrants and illicit goods across its southern border states. In July 2014, Mexico launched its most recent major initiative, the Southern Border Program (Programa Frontera Sur), amid the arrival of an unprecedented number of Central American minors traveling through Mexico to the U.S.-Mexico border. This report provides an analysis of Mexico’s Southern Border Program, setting it within a historical context, describing the program and its consequences, and examining its legacy.
UV/IR Mixing and Black Hole Thermodynamics
Creators: name: Nozari, Kourosh
name: Fazlpour, Behnaz
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The goal of this paper is to investigate the final stage of black hole evaporation process in the framework of Lorentz violating Modified Dispersion Relations(MDRs). As a consequence of MDRs, the high energy sector of the underlying field theory does not decouple from the low energy sector, the phenomenon which is known as UV/IR mixing. In the absence of exact supersymmetry, we derive a modified dispersion relation which shows UV/IR mixing by a novel energy dependence. Then we investigate the effects of these type of MDRs on the thermodynamics of a radiating noncommutative Schwarzschild black hole. The final stage of black hole evaporation obtained in this framework is compared with existing pictures.
description: 17 pages, 3 eps figures, accepted for publication in IJMPD
Intermittent behaviour of a Cracked Rotor in the resonance region
Creators: name: Litak, Grzegorz
name: Sawicki, Jerzy T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Vibrations of the Jeffcott rotor are modelled by a three degree of freedom system including coupling between lateral and torsional modes. The crack in a rotating shaft of the rotor is introduced via time dependent stiffness with off diagonal couplings. Applying the external torque to the system allows to observe the effect of crack "breathing" and gain insight into the system. It is manifested in the complex dynamic behaviour of the rotor in the region of internal resonance, showing a quasi--periodic motion or even non-periodic behaviour. In the present paper report, we show the system response to the external torque excitation using nonlinear analysis tools such as bifurcation diagram, phase portraits, Poincare maps and wavelet power spectrum. In the region of resonance we study intermittent motions based on laminar phases interrupted by a series nonlinear beats.
description: 12 pages, 6 figures
Cold Dark Matter Substructure and Galactic Disks
Creators: name: Kazantzidis, Stelios
name: Zentner, Andrew R.
name: Bullock, James S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We perform a set of high-resolution, dissipationless N-body simulations to investigate the influence of cold dark matter (CDM) substructure on the dynamical evolution of thin galactic disks. Our method combines cosmological simulations of galaxy-sized CDM halos to derive the properties of substructure populations and controlled numerical experiments of consecutive subhalo impacts onto initially-thin, fully-formed disk galaxies. We demonstrate that close encounters between massive subhalos and galactic disks since z~1 should be common occurrences in LCDM models. In contrast, extremely few satellites in present-day CDM halos are likely to have a significant impact on the disk structure. One typical host halo merger history is used to seed controlled N-body experiments of subhalo-disk encounters. As a result of these accretion events, the disk thickens considerably at all radii with the disk scale height increasing in excess of a factor of 2 in the solar neighborhood. We show that interactions with the subhalo population produce a wealth of distinctive morphological signatures in the disk stars including: conspicuous flares; bars; low-lived, ring-like features in the outskirts; and low-density, filamentary structures above the disk plane. We compare a resulting dynamically-cold, ring-like feature in our simulations to the Monoceros ring stellar structure in the MW. The comparison shows quantitative agreement in both spatial distribution and kinematics, suggesting that such observed complex stellar components may arise naturally as disk stars are excited by encounters with subhalos. These findings highlight the significant role of CDM substructure in setting the structure of disk galaxies and driving galaxy evolution.
description: 10 pages, 4 figures. To appear in the proceedings of the IAU Symposium No. 254 "The Galaxy Disk in Cosmological Context", Copenhagen 9-13 June 2008, Denmark, (Eds.) J. Andersen, J. Bland-Hawthorn & B. Nordstrom, Cambridge University Press
Finite automata for caching in matrix product algorithms
Creators: name: Crosswhite, Gregory M.
name: Bacon, Dave
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A diagram is introduced for visualizing matrix product states which makes transparent a connection between matrix product factorizations of states and operators, and complex weighted finite state automata. It is then shown how one can proceed in the opposite direction: writing an automaton that ``generates'' an operator gives one an immediate matrix product factorization of it. Matrix product factorizations have the advantage of reducing the cost of computing expectation values by facilitating caching of intermediate calculations. Thus our connection to complex weighted finite state automata yields insight into what allows for efficient caching in matrix product algorithms. Finally, these techniques are generalized to the case of multiple dimensions.
description: 18 pages, 19 figures, LaTeX; numerous improvements have been made to the manuscript in response to referee feedback
An Experimental Analysis of Work-Life Balance Among The Employees using Machine Learning Classifiers
Creators: name: Radha, Karampudi
name: Rohith, Mekala
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Researchers today have found out the importance of Artificial Intelligence, and Machine Learning in our daily lives, as well as they can be used to improve the quality of our lives as well as the cities and nations alike. An example of this is that it is currently speculated that ML can provide ways to relieve workers as it can predict effective working schedules and patterns which increase the efficiency of the workers. Ultimately this is leading to a Work-Life Balance for the workers. But how is this possible? It is practically possible with the Machine Learning algorithms to predict, calculate the factors affecting the feelings of the worker's work-life balance. In order to actually do this, a sizeable amount of 12,756 people's data has been taken under consideration. Upon analysing the data and calculating under various factors, we have found out the correlation of various factors and WLB(Work-Life Balance in short). There are some factors that have to be taken into serious consideration as they play a major role in WLB. We have trained 80% of our data with Random Forest Classifier, SVM and Naive Bayes algorithms. Upon testing, the algorithms predict the WLB with 71.5% as the best accuracy.
description: 10 pages, 16 figures, Published with International Journal of Computer Trends and Technology (IJCTT)
Bell inequalities for continuous-variable correlations
Creators: name: Cavalcanti, E. G.
name: Foster, C. J.
name: Reid, M. D.
name: Drummond, P. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive a new class of correlation Bell-type inequalities. The inequalities are valid for any number of outcomes of two observables per each of n parties, including continuous and unbounded observables. We show that there are no first-moment correlation Bell inequalities for that scenario, but such inequalities can be found if one considers at least second moments. The derivation stems from a simple variance inequality by setting local commutators to zero. We show that above a constant detector efficiency threshold, the continuous variable Bell violation can survive even in the macroscopic limit of large n. This method can be used to derive other well-known Bell inequalities, shedding new light on the importance of non-commutativity for violations of local realism.
description: 4 pages, 1 figure. v2: New results on detector efficiencies and macroscopic limit, new co-author, changed title and abstract, changed figure, added journal reference and DOI
State estimation in quantum homodyne tomography with noisy data
Creators: name: Aubry, Jean-Marie
name: Butucea, Cristina
name: Méziani, Katia
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G05; 62G20; 81V80

description: In the framework of noisy quantum homodyne tomography with efficiency parameter $0 < η\leq 1$, we propose two estimators of a quantum state whose density matrix elements $ρ_{m,n}$ decrease like $e^{-B(m+n)^{r/ 2}}$, for fixed known $B>0$ and $0
FolSvp2-GFP planta expressed and purified LC-MS/MS data
Creators: name: Li, Jingtao
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310705
subject: Mycology

description: We can obtain FolSvp2 peptides from FolSvp2-GFP planta expressed and purified LC-MS/MS data