cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Nuclear Infrared Emission of Low-Luminosity AGN
Creators: name: Mason, R E
name: Lopez-Rodriguez, E
name: Packham, C
name: Alonso-Herrero, A
name: Levenson, N A
name: Radomski, J
name: Almeida, C Ramos
name: Colina, L
name: Elitzur, M
name: Aretxaga, I
name: Roche, P F
name: Oi, N
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have obtained high-resolution mid-infrared (MIR) imaging, nuclear spectral energy distributions (SEDs) and archival Spitzer spectra for 22 low-luminosity active galactic nuclei (LLAGN; L_bol < 5 x 10^42 erg/s). Infrared (IR) observations may advance our understanding of the accretion flows in LLAGN, the fate of the obscuring torus at low accretion rates, and, perhaps, the star formation histories of these objects. However, while comprehensively studied in higher-luminosity Seyferts and quasars, the nuclear IR properties of LLAGN have not yet been well-determined. In these proceedings we summarise the results for the LLAGN at the relatively high-luminosity, high-Eddington ratio end of the sample. Strong, compact nuclear sources are visible in the MIR images of these objects, with luminosities consistent with or slightly in execss of that predicted by the standard MIR/X-ray relation. Their broadband nuclear SEDs are diverse; some resemble typical Seyfert nuclei, while others possess less of a well-defined MIR ``dust bump''. Strong silicate emission is present in many of these objects. We speculate that this, together with high ratios of silicate strength to hydrogen column density, could suggest optically thin dust and low dust-to-gas ratios, in accordance with model predictions that LLAGN do not host a Seyfert-like obscuring torus.
description: 8 pages, 4 figures, to appear in "The Central Kiloparsec in Galactic Nuclei: Astronomy at High Angular Resolution 2011", open access Journal of Physics: Conference Series (JPCS), published by IOP Publishing
Intranight optical variability of TeV blazars with parsec-scale jets dominated by slow-moving radio knots
Creators: name: Negi, Vibhore
name: Gopal-Krishna
name: Chand, Hum
name: Britzen, Silke
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: BL Lac objects detected at TeV energies preferentially belong to the subclass called 'high-frequency-peaked' BL Lacs (HBLs). Parsec-scale radio jets in these TeV-HBLs often show dominant, slow moving radio knots that are at most mildly superluminal. We report the first systematic campaign to characterise the Intra-Night Optical Variability (INOV) of TeV-HBLs using a representative sample of 6 such sources, all showing a fairly high degree of optical polarization. Our campaign consists of high-sensitivity monitoring of this sample in 24 sessions of more than 3 hour duration each. For these TeV-HBLs, we find a striking lack of INOV and based on this, we discuss the importance of superluminal motion of the radio knots vis-a-vis the optical polarization, as the key diagnostic for INOV detection.
description: accepted for publication in MNRAS letters
Reply on "Comment on 'Role of initial entanglement and non-Gaussianity in the decoherence of photon-number entangled states evolving in a noisy channel' "
Creators: name: Allegra, Michele
name: Giorda, Paolo
name: Paris, Matteo G. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a recent work (Allegra et al, Phys. Rev. Lett. 105, 100503, 2010) we addressed the evolution of photon-number entangled states in noisy Gaussian channels. Upon exploiting several non equivalent separability criteria we found evidence that entanglement of Gaussian PNES survives longer, and thus we drew a conjecture about the generality of this result. In their Comment to our work, Lee et al. use an additional entanglement criterion (NDPT) which allows them to show some counterexamples to our conjecture, i.e., nonGaussian states whose entanglement survives longer. In this reply, we argue that although there are no flaws or central errors in our original Letter, the conjecture is not maintanable in a strict sense if one includes the NDPT criterion. Nevertheless, for the examples of non Gaussian states proposed in the Comment, which violate the conjecture, the residual entanglement is extremely low. Therefore it remains an open question whether these, as well as other kinds of states, could represent a useful resource in quantum communication protocols.
description: 1 page, 1 figure
Guida all'Open Science in Horizon Europe
Creators: name: Giglia, Elena
Publisher: name: Zenodo
Year: 2021
Subjects: Horizon Europe

description: Bozza di guida rapida alle pratiche Open Science obbligatorie e raccomandate in Horizon Europe. V2: aggiunta la definizione di "Trusted repository" da Annotated Model Grant Agreement Pre-draft July 2021. VERSIONE 2 NON DEFINITIVA, ANCORA IN FASE DI REVISIONE COLLETTIVA. DA NON UTILIZZARE ANCORA PER LA DIFFUSIONE. GRAZIE
SALT spectroscopy of the HMXB associated with the LMC supernova remnant MCSNR\,J0513$-$6724
Creators: name: Gvaramadze, Vasilii
name: Kniazev, Alexei
name: Castro, Norberto
name: Katkov, Ivan
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the results of optical échelle spectroscopy with the Southern African Large Telescope (SALT) of the mass donor star BSDL\,923 in the neutron star (NS) high-mass X-ray binary XMMU\,J051342.6$-$672412 associated with the LMC supernova remnant (SNR) MCSNR\,J0513$-$6724. We found that BSDL\,923 is a B0.7\,III star with double peaked emission lines originating in a circumbinary disk-like structure. This classification and the presence of double-peaked emission lines imply that BSDL\,923 is a Be star. Modelling with the stellar atmosphere code {\sc fastwind} was used to derive the effective temperature $T_{\rm eff}=27\pm1$\,kK, surface gravity $\log g=3.22\pm0.10$, projected rotational velocity $v\sin i\approx100\pm45 \, \kms$, colour excess $E(B-V)=0.53\pm0.05$\,mag, and luminosity $\log(L_*/\lsun)=5.46\pm0.10$ of BSDL\,923, as well as to show that the surface of this star is polluted with $α$-elements (O, Mg and Si) from the supernova ejecta. We found also that the NS is orbiting BSDL\,923 in an eccentric ($e=0.158\pm0.061$) orbit with the orbital period of $1.280\pm0.006$\,d and the semi-major axis of $17\pm3 \, \rsun$, and the radius of BSDL\,923 is $25\pm5 \,\rsun$. We speculate that the NS is embedded in the atmosphere of BSDL\,923 either because it was kicked at birth towards this star or because of inflation of BSDL\,923 caused by the energy input from the supernova blast wave. Using long-slit spectroscopy with SALT, we searched for possible signs of the SNR shell in the 2D spectrum, but did not find them. This lack of detection is consistent with the young age ($\approx4^{+2} _{-1}$\,kyr) of MCSNR\,J0513$-$6724, implying that it is still in the adiabatic (non-radiative) phase.
description: 13 pages, 11 figures and 6 tables. Accepted for publication by MNRAS
Information and Communication Technology Facilities and Users' Satisfaction in the University of Calabar Library, Cross River State, Nigeria
Creators: name: Ntui, Aniebiet Inyang
Publisher: name: Zenodo
Year: 2015
Subjects: Information Resources
Technology

description: The main purpose of this study was to investigate ICT facilities and users’ satisfaction in the University of Calabar. Expo-facto research design was adopted for the study. A total sample of one hundred (100) respondents was randomly selected for the study through the simple random sampling technique. The questionnaire was the main instrument used for data collection. Pearson product moment correlation analysis was considered the appropriate statistical technique to test the hypotheses. The result of the analysis revealed that the use of e- mail, internet services and computerassisted instruction significantly influence users’ satisfaction in the University of Calabar library. Based on the finding of the study, it was recommended among others that competent and qualified professional staff that have ICT knowledge should be employed in the library system because the world is globally operating on the net.
A deep search for CO J=2-1 emission from a Lyman-Alpha blob at z~6.595
Creators: name: Wagg, Jeff
name: Kanekar, Nissim
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have used the Green Bank Telescope to carry out a deep search for redshifted CO J=2-1 line emission from an extended (>17 kpc) Ly-Alpha blob (LAB), "Himiko", at z~6.595. Our non-detection of CO J=2-1 emission places the strong 3-sigma upper limit of L'_CO < 1.8x10^10 x sqrt(dV/250) K km/s pc^2 on the CO line luminosity. This is comparable to the best current limits on the CO line luminosity in LABs at z~3 and lower-luminosity Lyman-Alpha emitters (LAEs) at z>~6.5. High-z LABs appear to have lower CO line luminosities than the host galaxies of luminous quasars and sub-mm galaxies at similar redshifts, despite their high stellar mass. Although the CO-to-H2 conversion factor is uncertain for galaxies in the early Universe, we assume X_CO = 0.8 Msun (K km/s pc^2)^-1 to obtain the limit M(H_2) < 1.4 x 10^10 Msun on Himiko's molecular gas mass; this is a factor of >2.5 lower than the stellar mass in the z~6.595 LAB.
description: 11 pages, 1 Figure; Accepted for publication in ApJ Letters
On the origin of the anomalous gas, non-declining rotation curve and disc asymmetries in NGC253
Creators: name: Lyu, Xuanyi
name: Westmeier, T.
name: Meurer, Gerhardt R.
name: Hanish, D. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a multi-wavelength (from far ultraviolet to HI emission) study of star formation feedback on the kinematics of the interstellar medium in the Sculptor Galaxy, NGC253. Its three well-known features (a disrupted stellar disc, a previously reported delining rotation curve, and anomalous HI gas) are studied in a common context of disc asymmetries. About 170 h of on-source ATCA observations are collected and reduced into two versions of \HI\ data cubes of different angular resolution (30'' / 2') and HI column density sensitivity (7.4 $\times$ $10^{19}$cm$^{-2}$ / 4$\times$ $10^{18}$cm$^{-2}$). We separate the anomalous gas from the disc using a custom-made line profile fitting toolkit called FMG. Two star formation tracers (H$α$, FUV emission) are carefully processed and studied. We find that at $R > 7.5~\mathrm{kpc}$ the star formation activity is strongly lopsided (SFR$_{NE}$ >SFR$_{SW}$), and investigate several other properties (H$α$/FUV, dust temperature, stellar age, and disc stability parameters). We also find that the declining nature of the rotation curve perceived by previous studies is not intrinsic but a combined effect of kinematical asymmetries at $R = 7.5$--$16~\mathrm{kpc}$. This is likely the consequence of star formation triggered outflow. The mass distribution and the timescale of the anomalous gas also imply that it originates from gas outflow, which is perhaps caused by galaxy-galaxy interaction considering the crowded environment of NGC253.
description: 22 pages, 23 figures, accepted for publication in MNRAS
First observation of Cherenkov rings with a large area CsI-TGEM-based RICH prototype
Creators: name: Peskov, V.
name: Bencze, G.
name: Di Mauro, A.
name: Martinengo, P.
name: Mayani, D.
name: Molnar, L.
name: Nappi, E.
name: Paic, G.
name: Smirnov, N.
name: Anand, H.
name: Shukla, I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We have built a RICH detector prototype consisting of a liquid C6F14 radiator and six triple Thick Gaseous Electron Multipliers (TGEMs), each of them having an active area of 10x10 cm2. One triple TGEM has been placed behind the liquid radiator in order to detect the beam particles, whereas the other five have been positioned around the central one at a distance to collect the Cherenkov photons. The upstream electrode of each of the TGEM stacks has been coated with a 0.4 micron thick CsI layer. In this paper, we will present the results from a series of laboratory tests with this prototype carried out using UV light, 6 keV photons from 55Fe and electrons from 90Sr as well as recent results of tests with a beam of charged pions where for the first time Cherenkov Ring images have been successfully recorded with TGEM photodetectors. The achieved results prove the feasibility of building a large area Cherenkov detector consisting of a matrix of TGEMs.
description: Presented at the International Conference NDIP-11, Lyon,July2011
The effect of different levels of metabolic energy on the heart rate of the crayfish, Procambarus clarki
Creators: name: Nanavati, Pheroze Kawus
Publisher: name: University of Calgary
Year: 1977
Subjects: subject: QL 444 D3 N35 1977 Microfiche
subject: Crayfish
subject: Heart beat

description: Bibliography: p. 54-55.
Social Normative Influence Under Ambiguous Uncertainty
Creators: name: Ekelund, Malin
name: Bergquist, Magnus
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Social Psychology
subject: Psychology
subject: FOS: Psychology

description: We are going to conduct a study about the potentially moderating role of uncertainty for social normative influence. Focus theory of normative conduct suggest that norms must be cognitively activated to affect behavior (Cialdini et al., 1990). Such activation can be induced by cues in the environment (Cialdini et al., 1991; Keizer et al., 2008), but also by situational norms (Aarts & Dijksterhuis, 2003), guiding behaviors in specific situations, for example, behaving silently in a church or library. We propose that ambiguity can also activate social norms. This proposal resonates with past research, suggesting that people are more likely to seek social comparisons for decision-making processes in ambiguously uncertain situations (Festinger, 1954). In defining ambiguity, we turn to the concept of uncertainty, which is often divided into the psychological constructs of risk, where likelihoods are known, and ambiguity, where likelihoods are unknown (Ellsberg, 1961). In the present study, we will focus on ambiguity. We define uncertainty as the conscious awareness of ignorance (Anderson et al., 2019).
Muscle physiology and ecology of the Brachiopod Terbratalia transversa
Creators: name: Eshleman, William Phillip
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: QL 395.95 E83 1979 Microfiche
subject: Terebratalia transversa
subject: Brachiopoda
subject: Animal ecology

description: Bibliography: p. 76-81.
Metabolic effects of duodenal mucosal resurfacing on insulin resistant women with polycystic ovary syndrome
Creators: name: Kaur, Vasha
Publisher: name: Imperial College London
Year: 2020

description: Background Insulin resistant conditions such as T2DM, obesity and PCOS are significant contributors of morbidity and mortality worldwide. At present, the principal treatment modalities are lifestyle measures, pharmacotherapy and metabolic surgery. Although metabolic surgery is a highly-effective option, there remains no ideal remedy. This has resulted in the development of endoluminal procedures such as duodenal mucosal resurfacing (DMR) to fill the treatment gap. Initial DMR results suggests efficacy in patients with T2DM. The DOMINO trial aimed to investigate the insulin-sensitising effect of DMR in women with PCOS, as a model of insulin resistance, as it additionally allowed assessment of reproductive function. Methods This was a mechanistic study conducted using a multi-centre prospective double-blinded sham-controlled RCT design. Thirty women of reproductive potential with PCOS, insulin resistance and oligomenorrhoea were randomised to receive either DMR or a sham endoscopic procedure with 6 months follow-up. All participants were investigated with OGTTs and hyperinsulinaemic-euglycaemic clamps pre- and post-procedure. Participants were also investigated with weekly reproductive blood tests and pelvic ultrasound scans from 3-months post-procedure to completion of the trial. Results Thirty women (mean age 31.1years, mean BMI 42.5kg/m2, mean HOMA-IR 6.2) were recruited. The rate of glucose appearance (Ra) and disappearance (Rd)– to quantify insulin sensitivity– were not significantly different between the DMR and sham groups. Ovulatory events from pelvic ultrasound scans and reproductive blood tests did not demonstrate a difference between the two groups. Conclusion DMR use did not result in significant improvement in insulin sensitivity or reproductive function in women with PCOS, insulin resistance and oligomenorrhoea. This suggests that the improvement in glycaemia and insulin resistance seen in patients with Type 2 diabetes melitus post-DMR is likely secondary to a pathophysiological difference that is not evident in a cohort of patients without T2DM. However, further evidence is needed to substantiate this hypothesis.
A Decade of Near-Infrared Variability in NGC4388: Insights into the AGN Structure
Creators: name: Dahmer-Hahn, Luis G.
name: Rodríguez-Ardila, Alberto
name: Bianchin, Marina
name: Riffel, Rogemar A.
name: Riffel, Rogério
name: Storchi-Bergmann, Thaisa
name: Hao, Lei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Variability studies have proven to be a powerful diagnostic tool for understanding the physics and properties of of Active Galactic Nuclei (AGNs). They provide insights into the spatial and temporal distribution of the emitting regions, the structure and dynamics of the accretion disk, and the properties of the central black hole. Here, we have analysed the K-band spectral variability of the Seyfert 1.9/2 galaxy NGC4388 spanning five epochs over a period of ten years. We have performed spectral synthesis of the nuclear region and found that the contribution of warm dust (T~800K) declined by 88% during these 10 years. In the same period, the [CaVIII] coronal line decreased 61%, whereas BrG emission declined 35%. For the HeI and H2, we did not detect any significant variation beyond their uncertainties. Based on the time span of these changes, we estimate that the region where the warm dust is produced is smaller than 0.6pc, which suggests that this spectral feature comes from the innermost part of the region sampled, directly from the AGN torus. On the other hand, the bulk of [CaVIII] is produced in the inner ~2pc and the nuclear BrG region is more extended, spanning a region larger than 3pc. Lastly, HeI and H2 are even more external, with most of the emission probably being produced in the host galaxy rather than in the AGN. This is the first spectroscopic variability study in the NIR for an AGN where the central source is not directly visible.
description: Accepted in MNRAS. 8 pages, 3 figures
A variable mid-infrared synchrotron break associated with the compact jet in GX 339-4
Creators: name: Gandhi, P.
name: Blain, A. W.
name: Russell, D. M.
name: Casella, P.
name: Malzac, J.
name: Corbel, S.
name: D'Avanzo, P.
name: Lewis, F. W.
name: Markoff, S.
name: Bel, M. Cadolle
name: Goldoni, P.
name: Wachter, S.
name: Khangulyan, D.
name: Mainzer, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Many X-ray binaries remain undetected in the mid-infrared, a regime where emission from their compact jets is likely to dominate. Here, we report the detection of the black hole binary GX 339-4 with the Wide-field Infrared Survey Explorer (WISE) during a very bright, hard accretion state in 2010. Combined with a rich contemporaneous multiwavelength dataset, clear spectral curvature is found in the infrared, associated with the peak flux density expected from the compact jet. An optically-thin slope of ~-0.7 and a jet radiative power of >6x10^{35} erg/s (d/8 kpc)^2 are measured. A ~24 h WISE light curve shows dramatic variations in mid-infrared spectral slope on timescales at least as short as the satellite orbital period ~95 mins. There is also significant change during one pair of observations spaced by only 11 s. These variations imply that the spectral break associated with the transition from self-absorbed to optically-thin jet synchrotron radiation must be varying across the full wavelength range of ~3-22 microns that WISE is sensitive to, and more. Based on four-band simultaneous mid-infrared detections, the break lies at ~5x10^{13} Hz in at least two epochs of observation, consistent with a magnetic field B~1.5x10^4 G assuming a single-zone synchrotron emission region. The observed variability implies that either B, or the size of the acceleration zone above the jet base, are being modulated by factors of ~10 on relatively-short timescales.
description: ApJL vol. 740, issue 1, L11
Pioneer food patterns in the western interior of Canada
Creators: name: Barss, Beulah May
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: TX 353 B35 1979 Fiche
subject: Food supply - History - Canada, Western
subject: Food habits - History - Canada, Western
subject: Frontier and pioneer life - Prairie provinces

description: Bibliography: p. 144-153.
Repeat Extortion Victimisation Of Mexican Businesses
Creators: name: Estévez-Soto, Patricio Rodrigo
Publisher: name: Zenodo
Year: 2015
Subjects: repeat victimization
extortion
organized crime
victimization surveys
Mexico

description: Research on repeat victimisation consistently reveals that  crimes to concentrate within a small subset of victims. Given a recent increase on the number of extortions against businesses in Mexico, this research aimed to answer whether extortion concentrates within a small subset of businesses and if so, what could explain this concentration. Drawing from a national commercial victimisation survey conducted in 2013, several hypothesis relating to potential sources of risk heterogeneity were tested using single and multilevel modelling based on the negative binomial regression. Results showed that extortion concentrates far beyond what can be explained by chance, and that extortion incidence is positively associated with corruption incidents, years in business, state homicide rates, and being a restaurant, hotel or bar. Alternatively, it was found that the smallest businesses suffer less extortion than larger businesses. State level effects were found to be comparatively small to differences between businesses. Implications for research and crime policy in Mexico are briefly discussed.
A CO Funnel in the Galactic Centre: Molecular Counterpart of the Northern Galactic Chimney?
Creators: name: Veena, V. S.
name: Riquelme, D.
name: Kim, W. -J.
name: Menten, K. M.
name: Schilke, P.
name: Sormani, M. C.
name: Banda-Barragan, W. E.
name: Wyrowski, F.
name: Fuller, G. A.
name: Cheema, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the discovery of a velocity coherent, funnel shaped ^13CO emission feature in the Galactic centre (GC) using data from the SEDIGISM survey. The molecular cloud appears as a low velocity structure (V_LSR=[-3.5, +3.5] km/s) with an angular extent of 0.95° x 1°, extending toward positive Galactic latitudes. The structure is offset from Sgr A* toward negative Galactic longitudes and spatially and morphologically correlates well with the northern lobe of the 430 pc radio bubble, believed to be the radio counterpart of the multiwavelength GC chimney. Spectral line observations in the frequency range of 85-116 GHz have been carried out using the IRAM 30 metre telescope toward 12 positions along the funnel-shaped emission. We examine the ^12C/^13C isotopic ratios using various molecules and their isotopologues. The mean ^12C/^13C isotope ratio (30.6+-2.9) is consistent with the structure located within inner 3 kpc of the Galaxy and possibly in the GC. The velocity of the molecular funnel is consistent with previous radio recombination line measurements of the northern lobe of radio bubble. Our multiwavelength analysis suggests that the funnel shaped structure extending over 100 pc above the Galactic plane is the molecular counterpart of the northern GC chimney.
description: Accepted for publication in A&A Letters
Survey of student involvement in decision-making in the mathematics program at an Alberta community college
Creators: name: Treslan, Dennis Liv
Publisher: name: University of Calgary
Year: 1972
Subjects: subject: LB 2346 T72 1972 Microfilm
subject: Student participation in administration
subject: Self-government (In higher education)
subject: Decision-making
subject: Mathematics - Study and teaching (Secondary)

description: Bibliography: p. 86-91.
Using a neural network approach to accelerate disequilibrium chemistry calculations in exoplanet atmospheres
Creators: name: Hendrix, Julius L. A. M.
name: Louca, Amy J.
name: Miguel, Yamila
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this era of exoplanet characterisation with JWST, the need for a fast implementation of classical forward models to understand the chemical and physical processes in exoplanet atmospheres is more important than ever. Notably, the time-dependent ordinary differential equations to be solved by chemical kinetics codes are very time-consuming to compute. In this study, we focus on the implementation of neural networks to replace mathematical frameworks in one-dimensional chemical kinetics codes. Using the gravity profile, temperature-pressure profiles, initial mixing ratios, and stellar flux of a sample of hot-Jupiters atmospheres as free parameters, the neural network is built to predict the mixing ratio outputs in steady state. The architecture of the network is composed of individual autoencoders for each input variable to reduce the input dimensionality, which is then used as the input training data for an LSTM-like neural network. Results show that the autoencoders for the mixing ratios, stellar spectra, and pressure profiles are exceedingly successful in encoding and decoding the data. Our results show that in 90% of the cases, the fully trained model is able to predict the evolved mixing ratios of the species in the hot-Jupiter atmosphere simulations. The fully trained model is ~1000 times faster than the simulations done with the forward, chemical kinetics model while making accurate predictions.
description: 13 pages, 9 figures, accepted for publication at MNRAS
Collaborative Personalized Web Recommender System using Entropy based Similarity Measure
Creators: name: Mehta, Harita
name: Bhatia, Shveta Kundra
name: Bedi, Punam
name: Dixit, V. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: On the internet, web surfers, in the search of information, always strive for recommendations. The solutions for generating recommendations become more difficult because of exponential increase in information domain day by day. In this paper, we have calculated entropy based similarity between users to achieve solution for scalability problem. Using this concept, we have implemented an online user based collaborative web recommender system. In this model based collaborative system, the user session is divided into two levels. Entropy is calculated at both the levels. It is shown that from the set of valuable recommenders obtained at level I; only those recommenders having lower entropy at level II than entropy at level I, served as trustworthy recommenders. Finally, top N recommendations are generated from such trustworthy recommenders for an online user.
description: 10 pages
Using herbivore induced plant volatiles and environmental factors for sensitive monitoring of pests infestation in greenhouse tomato crops
Creators: name: Miresmailli, Saber
Publisher: name: University of British Columbia
Year: 2009

description: Suitability of herbivore-induced plant volatiles as indicators of cabbage looper (Trichoplusia ni, Noctuidae) infestation on tomato plants was assessed for developing a pest monitoring system inside tomato greenhouses. From volatile blends of infested tomato plants, four compounds have been selected as T. ni infestation indicators: (Z)-3-hexenyl acetate, (E)- β-ocimene, limonene and β-caryophellene. Laboratory results indicated significant quantitative differences in the emission level of these indicator chemicals from infested plants compared to clean plants. Research greenhouse trials confirmed these results and also indicated that these differences are detectable six hours after initiation of infestation. The research greenhouse trials also indicated that is it possible to obtain information about T.ni population density, their location within the plant canopy and their feeding duration. A survey was conducted inside a commercial greenhouse. Indicator chemical emission levels, pest infestation status, environmental factors and operational practices were recorded. Pest infestation was found to have significant effect on the emission of indicator chemicals. A portable gas chromatograph was used for most phases of this research. This instrument was found suitable for fieldwork and monitoring rapid changes in the emission levels of plant volatiles. In general, these four chemical volatiles were found to be suitable indicators of T. ni infestation in greenhouse tomato plants.
Continuity of weighted estimates for sublinear operators
Creators: name: Papadimitrakis, Michael
name: Pattakos, Nikolaos
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this note we prove that if a sublinear operator T satisfies a certain weighted estimate in the $L^{p}(w)$ space for all $w\in A_{p}$, $1
description: 4 pages
Waiting lists and waiting times for early intervention therapies, infant development programs and supported child development programs in British Columbia
Creators: name: Chan, Wing-Ping Herbert
Publisher: name: University of British Columbia
Year: 2009

description: Children at risk of developmental delays or disabilities require intervention services to enhance their growth and development. Long waits to obtain these services are a concern to both parents and service providers. The purpose of this research was to investigate the nature of waiting lists and waiting times within the context of selected early childhood intervention services in British Columbia (BC). This study utilized qualitative and quantitative data (questionnaires, focus groups and administrative data) focusing on referral and intake information for infant development programs (IDP), supported child development programs (SCDP), physiotherapy (PT), occupational therapy (OT) and speech-language pathology (SLP) services. Data availability posed a significant challenge in this study. Overall, this study demonstrated that most children referred in 2003 and 2004 have experienced some degree of waiting for these services in BC. Specifically provision of SLP and OT services faced a consistent challenge with regard to waiting times. Furthermore, waiting times varied widely across programs and regions; estimated median wait times in this study ranged from 12 days (95% CI, 7.31-16.69 days) for SCDP to 180 days (95% CI, 62.84 – 297.16 days) for OT. The median wait times for IDP, PT and SLP were estimated to be 70 (95%CI, 55.61-84.39), 57 (95%CI, 41.97 -72.03) and 112 (95% CI, 108.0 – 115.90) days respectively. Wait time variations for IDP and SLP services were also analysed by Cox regression. Inter-agency and regional variations in wait times persisted after adjusting for child factors. Agencies’ characteristics explained some of the wait time variations across agencies and regions. Variability in wait times due to demand changes (i.e. changes in the population and awareness of services) was also suggested. Referral by family was consistently associated with shorter wait times than referral by professionals. A common framework of identifying various waits along the service pathway emerged through focus groups. Further research on wait time definitions and improvement of data system to address the gaps in data availability in this field is urgently needed. These findings offer policy-makers some useful insights into developing tools for managing and monitoring waiting times for early childhood intervention services.
A Detection of Weak Lensing Magnification using Galaxy Sizes and Magnitudes
Creators: name: Schmidt, Fabian
name: Leauthaud, Alexie
name: Massey, Richard
name: Rhodes, Jason
name: George, Matthew R.
name: Koekemoer, Anton M.
name: Finoguenov, Alexis
name: Tanaka, Masayuki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Weak lensing is commonly measured using shear through galaxy ellipticities, or using the effect of magnification bias on galaxy number densities. Here, we report on the first detection of weak lensing magnification with a new, independent technique using the distribution of galaxy sizes and magnitudes. These data come for free in galaxy surveys designed for measuring shear. We present the magnification estimator and apply it to an X-ray selected sample of galaxy groups in the COSMOS HST survey. The measurement of the projected surface density Σ(r) is consistent with the shear measurements within the uncertainties, and has roughly 40% of the signal-to-noise of the latter. We discuss systematic issues and challenges to realizing the potential of this new probe of weak lensing.
description: 5 pages, 4 figures; v2: references added; version accepted for publication in ApJ Letters
No evidence for a central IMBH in M15
Creators: name: Kirsten, F.
name: Vlemmings, W. H. T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Intermediate mass black holes (IMBHs) with expected masses M_BH ~ 10^4 M_sun are thought to bridge the gap between stellar mass black holes (M_BH ~ 3 - 100 M_sun) and supermassive black holes found at the centre of galaxies (M_BH > 10^6 M_sun). Until today, no IMBH has been confirmed observationally. The most promising objects to host an IMBH as their central mass are globular clusters. Here, we present high sensitivity multi-epoch 1.6 GHz very long baseline interferometry observations of the globular cluster M15 that has been suggested to host an IMBH. Assuming the IMBH to be accreting matter from its surrounding we expect to detect it as a point source moving with the global motion of the cluster. However, we do not detect any such object within a radius of 6000 AU of the cluster centre in any of the five observations spread over more than one year. This rules out any variability of the putative IMBH on the time scale of one to two months. To get the most stringent upper limit for the flux density of the putative IMBH we concatenate the data of all five epochs. In this data we measure a 3σ upper flux limit of 10 μJy for a central source. We employ the fundamental plane of black hole activity to estimate the mass of the central IMBH candidate. Based on previous X-ray observations of M15 our measurements indicate a 3σ upper mass limit of ~500 M_sun.
description: 6 pages, 2 figures, accepted for publication in A&A
Opto-Acoustic Oscillator Using Silicon Mems Optical Modulator
Creators: name: Sridaran, Suresh
name: Bhave, Sunil A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show operation of a silicon MEMS based narrow-band optical modulator with large modulation depth by improving the electro-mechanical transducer. We demonstrate an application of the narrowband optical modulator as both the filter and optical modulator in an opto-electronic oscillator loop to obtain a 236.22 MHz Opto-Acoustic Oscillator (OAO) with phase noise of -68 dBc/Hz at 1 kHz offset.
Factors Influencing Mode Choice of Adults with Travel-Limiting Disability
Creators: name: Uddin, Majbah
name: Meiyu
name: Pan
name: Hwang, Ho-Ling
Publisher: name: arXiv
Year: 2024
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Despite the plethora of research devoted to analyzing the impact of disability on travel behavior, not enough studies have investigated the varying impact of social and environmental factors on the mode choice of people with disabilities that restrict their ability to use transportation modes efficiently. This research gap can be addressed by investigating the factors influencing the mode choice behavior of people with travel-limiting disabilities, which can inform the development of accessible and sustainable transportation systems. Additionally, such studies can provide insights into the social and economic barriers faced by this population group, which can help policymakers to promote social inclusion and equity. This study utilized a Random Parameters Logit model to identify the individual, trip, and environmental factors that influence mode selection among people with travel-limiting disabilities. Using the 2017 National Household Travel Survey data for New York State, which included information on respondents with travel-limiting disabilities, the analysis focused on a sample of 8,016 people. In addition, climate data from the National Oceanic and Atmospheric Administration were integrated as additional explanatory variables in the modeling process. The results revealed that people with disabilities may be inclined to travel longer distances walking in the absence of suitable accommodation facilities for other transportation modes. Furthermore, people were less inclined to walk during summer and winter, indicating a need to consider weather conditions as a significant determinant of mode choice. Moreover, low-income people with disabilities were more likely to rely on public transport or walking.
Mapping Research Topics on The Determinants and Influence of the Market Value Added (MVA) Ratio in Banking: VOSviewer Bibliometric Study and Literature Review
Creators: name: Budianto, Eka Wahyu Hestya
name: Dewi, Nindi Dwi Tetria
Publisher: name: Zenodo
Year: 2023

description: This study aims to determine the research mapping regarding the determinants and effects of the Market Value Added (MVA) ratio in banking using a mix-method approach, namely quantitative methods in bibliometric studies and qualitative methods in literature review studies. The type of data used is secondary data. The source of data collection comes from searching national journals indexed by Google Scholar and accredited by Sinta through the Perish/Harzing application. Data analysis techniques include: (1) mapping research around the MVA ratio using a bibliometric study with the VOSviewer algorithm software; (2) mapping the influence and determinant variables of the MVA ratio in banking using a literature review study. The results showed that based on the VOSviewer bibliometric study, the research on the determinants and effects of the MVA ratio was divided into 5 clusters and 192 topic items. Meanwhile, based on a literature review study, 11 influences and 30 determinants of the MVA ratio in banking exist. The implications and contributions of this research are to map topics around the MVA ratio in banking, which are often or rarely researched by researchers so that they can be a reference for subsequent researchers.
Inelastic Dark Matter at the LHC
Creators: name: Bai, Yang
name: Tait, Tim M. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We perform a model-independent study of inelastic dark matter at the LHC, concentrating on the parameter space with the mass splitting between the excited and ground states of dark matter above a few hundred MeV, where the direct detection experiments are unlikely to explore. The generic signatures of inelastic dark matter at the LHC are displaced pions together with a monojet plus missing energy, and can be tested at the 7 TeV LHC.
description: 4 pages, 6 figures
Double neutron star formation via consecutive type II supernova explosions
Creators: name: Fröhlich, Viktória
name: Regály, Zsolt
name: Vinkó, József
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Since the discovery of the first double neutron star (DNS) system, the number of these exotic binaries has reached fifteen. Here we investigate a channel of DNS formation in binary systems with components above the mass limit of type II supernova explosion (SN II), i.e. 8 MSun. We apply a spherically symmetric homologous envelope expansion model to account for mass loss, and follow the dynamical evolution of the system numerically with a high-precision integrator. The first SN occurs in a binary system whose orbital parameters are pre-defined, then, the homologous expansion model is applied again in the newly formed system. Analysing 1 658 880 models we find that DNS formation via subsequent SN II explosions requires a fine-tuning of the initial parameters. Our model can explain DNS systems with a separation greater than 2.95 au. The eccentricity of the DNS systems spans a wide range thanks to the orbital circularisation effect due to the second SN II explosion. The eccentricity of the DNS is sensitive to the initial eccentricity of the binary progenitor and the orbital position of the system preceding the second explosion. In agreement with the majority of the observations of DNS systems, we find the system centre-of mass velocities to be less than 60 km/s. Neutron stars that become unbound in either explosion gain a peculiar velocity in the range of 0.02 - 240 km/s. In our model, the formation of tight DNS systems requires a post-explosion orbit-shrinking mechanism, possibly driven by the ejected envelopes.
description: Accepted for publication in MNRAS
Teacher and administrator perceptions of the academic elective subjects in the Calgary Catholic School systems
Creators: name: Stobie, Gordon Martin
Publisher: name: University of Calgary
Year: 1972
Subjects: subject: LB 1623 S75 1972 Microfilm
subject: Junior high schools - Curricula
subject: Teachers - Attitudes
subject: School administrators - Attitudes
subject: Elective subjects in schools

description: Bibliography: p. 87-91.
The VVV near-IR galaxy catalogue in a Northern part of the Galactic disc
Creators: name: Daza-Perilla, I. V.
name: Sgró, M. A.
name: Baravalle, L. D.
name: Alonso, M. V.
name: Villalon, C.
name: Lares, M.
name: Soto, M.
name: Castellón, J. L. Nilo
name: Valotto, C.
name: Cortés, P. Marchant
name: Minniti, D.
name: Hempel, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The automated identification of extragalactic objects in large surveys provides reliable and reproducible samples of galaxies in less time than procedures involving human interaction. However, regions near the Galactic disc are more challenging due to the dust extinction. We present the methodology for the automatic classification of galaxies and non-galaxies at low Galactic latitude regions using both images and, photometric and morphological near-IR data from the VVVX survey. Using the VVV-NIRGC, we analyse by statistical methods the most relevant features for galaxy identification. This catalogue was used to train a CNN with image data and an XGBoost model with both photometric and morphological data and then to generate a dataset of extragalactic candidates. This allows us to derive probability catalogues used to analyse the completeness and purity as a function of the configuration parameters and to explore the best combinations of the models. As a test case, we apply this methodology to the Northern disc region of the VVVX survey, obtaining 172,396 extragalatic candidates with probabilities of being galaxies. We analyse the performance of our methodology in the VVV disc, reaching an F1-score of 0.67, a 65 per cent purity and a 69 per cent completeness. We present the VVV-NIR Galaxy Catalogue: Northern part of the Galactic disc comprising 1,003 new galaxies, with probabilities greater than 0.6 for either model, with visual inspection and with only 2 previously identified galaxies. In the future, we intend to apply this methodology to other areas of the VVVX survey.
description: 12 pages, 14 figures, accepted in MNRAS
Manual for Ensuring Privacy, Confidentiality, and Secure Data Storage
Creators: name: Czechowski, Konrad
name: Sylvestre, John
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2018
Subjects: data protection
cybersecurity

description: This document outlines the Centre for Research on Educational and Community Services’ (CRECS) recommended procedures for collecting, safeguarding, and working with confidential data. As a research centre located at the University of Ottawa, CRECS must hold itself to the highest standards for protection of personal information and confidential information. CRECS researchers, students and postdoctoral fellows regularly have access to confidential information such as personally-identifiable information, health information, and other kinds of non-public information. As a research centre, it is essential that CRECS be able to assure both its institutional partners and research participants of the safety and confidentiality of the data they provide. The smallest lapse in vigilance may have consequences for the participants, CRECS, the University of Ottawa, or our community and institutional partners. It is the responsibility of everyone at CRECS to treat data security as a vital part of their work. This manual begins with a rationale for maintaining privacy, confidentiality, and data security. Then, there is a brief description of how information for this manual was collected. Next, a review of applicable provincial and federal privacy legislation as well as professional codes of conduct is presented. Based on this review, a list of recommendations regarding privacy, confidentiality, and data security are provided.
Comparative Analysis of Routing Attacks in Ad Hoc Network
Creators: name: Purkayastha, Bipul Syam
name: Das, Rajib
Publisher: name: arXiv
Year: 2012
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In the mobile ad hoc networks the major role is played by the routing protocols in order to route the data from one mobile node to another mobile node. But in such mobile networks, routing protocols are vulnerable to various kinds of security attacks such as blackhole node attacks. The routing protocols of MANET are unprotected and hence resulted into the network with the malicious mobile nodes in the network. These malicious nodes in the network are basically acts as attacks in the network. In this paper, we modify the existing DSR protocol with the functionality of attacks detection without affecting overall performance of the network. Also, we are considering the various attacks on mobile ad hoc network called blackhole attack, flooding attack and show the comparative analysis of these attacks using network simulator ns-2.
description: 6 pages, 6 figures, 1 table, International Journal of Advanced Networking and Applications. arXiv admin note: text overlap with arXiv:1202.4628 by other authors