cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ð¢ÐµÐ¾ÑÐ¸Ñ Ð²ÐµÑÐ¾ÑÑÐ½Ð¾ÑÑÐµÐ¹. Ð§. 1.
title: ÑÐ±Ð¾ÑÐ½Ð¸Ðº Ð·Ð°Ð´Ð°Ñ
titleType: Subtitle
title: Probability Theory
Creators: name: Ð¥Ð°ÑÐ¸Ð½Ð°, ÐÐ½Ð½Ð°
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2024
Subjects: ÐÐµÑÐ¾ÑÑÐ½Ð¾ÑÑÐµÐ¹ ÑÐµÐ¾ÑÐ¸Ñ

description: Ð¡Ð±Ð¾ÑÐ½Ð¸Ðº Ð·Ð°Ð´Ð°Ñ ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ Ð±Ð¾Ð»ÑÑÐ¾Ðµ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð¾ Ð·Ð°Ð´Ð°Ð½Ð¸Ð¹ Ð¿Ð¾ ÐºÑÑÑÑ Â«Ð¢ÐµÐ¾ÑÐ¸Ñ Ð²ÐµÑÐ¾ÑÑÐ½Ð¾ÑÑÐµÐ¹Â», Ð¸Ð¼ÐµÑÑÐ¸Ñ Ð¿Ð¾Ð´ÑÐ¾Ð±Ð½ÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ Ð¸ Ð¾ÑÐ²ÐµÑÑ. ÐÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½ Ð´Ð»Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð²ÑÑÑÐ¸Ñ ÑÑÐµÐ±Ð½ÑÑ Ð·Ð°Ð²ÐµÐ´ÐµÐ½Ð¸Ð¹ Ð²ÑÐµÑ ÑÐ¾ÑÐ¼ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ (Ð¾ÑÐ½Ð¾Ð¹, Ð²ÐµÑÐµÑÐ½ÐµÐ¹ Ð¸ Ð·Ð°Ð¾ÑÐ½Ð¾Ð¹) Ð¿ÑÐ¸ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐµ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ¾Ð² Ð¿Ð¾ ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð¾ÑÑÐ¸ Â«ÐÑÐ¸ÐºÐ»Ð°Ð´Ð½Ð°Ñ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸ÐºÐ°Â» Ð¸ Ð´Ð¸Ð¿Ð»Ð¾Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð².
description: The taskbook contains a large number of tasks on the course âProbability Theoryâ with detailed solutions and answers. It is intended for students of higher educational institutions of all modes of study (full-time, part-time, and extramural) in training of Bachelorâs degree students in the major âApplied Informaticsâ and qualified specialists.
Characterizing Synchronous Writes in Stable Memory Devices
Creators: name: Mingardi, William B.
name: Vieira, Gustavo M. D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Operating Systems (cs.OS)
subject: FOS: Computer and information sciences

description: Distributed algorithms that operate in the fail-recovery model rely on the state stored in stable memory to guarantee the irreversibility of operations even in the presence of failures. The performance of these algorithms lean heavily on the performance of stable memory. Current storage technologies have a defined performance profile: data is accessed in blocks of hundreds or thousands of bytes, random access to these blocks is expensive and sequential access is somewhat better. File system implementations hide some of the performance limitations of the underlying storage devices using buffers and caches. However, fail-recovery distributed algorithms bypass some of these techniques and perform synchronous writes to be able to tolerate a failure during the write itself. Assuming the distributed system designer is able to buffer the algorithm's writes, we ask how buffer size and latency complement each other. In this paper we start to answer this question by characterizing the performance (throughput and latency) of typical stable memory devices using a representative set of current file systems.
description: 14 pages
Testing Yukawa Unification at LHC Run-3 and HL-LHC
Creators: name: Gomez, Mario
name: Shafi, Qaisar
name: Un, Cem Salih
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore $t-b-τ$ Yukawa unification (YU) in a supersymmetric $SU(4)_c \times SU(2)_L \times SU(2)_R $ model without imposing a discrete left-right (L-R) symmetry. A number of interesting solutions that are compatible with $t-b-τ$ YU, LSP neutralino dark matter (DM), and LHC and other experimental constraints are identified. In particular, they include gluino-neutralino and stau-neutralino co-annihilation scenarios, where the NLSP gluino mass can range from 1-3 TeV. Higgsino-like dark matter solutions are also identified for which gluino masses can approach 5 TeV or so. This scenario will be tested at LHC Run-3 and its future upgrades.
Magnetic and transport percolation in diluted magnetic semiconductors
Creators: name: Kaminski, A.
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The ferromagnetic transition in a diluted magnetic semiconductor with localized charge carriers is inevitably a percolation transition. In this work we theoretically study the correlation between this magnetic percolation and transport properties of the sample, including the possibility of a simultaneous transport percolation. We find nontrivial signatures of the percolating magnetic clusters in the transport properties of the system, including interesting non-monotonic temperature dependence of the system resistivity.
description: 9 pages, 5 figures
Determinants of Climate Change Adaptive Behavior in Coastal Communities in Southeast Asia
Creators: name: Sajise, Asa Jose U.
name: Perez, Maripax L.
name: Zamora, Glaiza J.
name: Ramirez, Paul Joseph B.
name: Arias, Jaimie Kim B.
name: Sajise, Asa Jose U.
name: Perez, Maripax L.
name: Zamora, Glaiza J.
name: Ramirez, Paul Joseph B.
name: Arias, Jaimie Kim B.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Community/Rural/Urban Development
subject: climate change, autonomous adaptation in coastal areas, multivariate probit, sea level rise
subject: coastal erosion, saltwater intrusion, flooding/typhoon

description: This study sought to understand the determinants of autonomous adaptation of households in coastal communities in three countries (Indonesia, the Philippines, and Vietnam) as regards climate change. The study’s main innovation is its focus on households facing a confluence of related hazards, a context that is unique to coastal communities. The study tackled the interrelated hazards of coastal erosion, flooding, and saltwater intrusion, and used a multivariate probit model to analyze the determinants. Regression results show that households adapt or respond autonomously to a combination of hazards. In fact, the econometric model of joint decision cannot be rejected by the data. Geographical differences were observed in adaptation patterns, implying that households react rationally to the degree of threats from the hazards. Like in some literature, the study found evidence that planned adaptation may crowd out private or autonomous adaptation. Likewise, trust increases the likelihood of self-insurance and self-protection, especially against extreme events that are either recurring or permanent. Finally, the households’ adaptive capacity depends partly on the type of hazard and has a gender dimension. In recurrent extreme events, the abundance of male labor increases the likelihood of adaptation. In permanent and creeping hazards such
Flat-top interleavers based on single MMIs
Creators: name: Cherchi, Matteo
name: Sun, Fei
name: Kapulainen, Markku
name: Harjanne, Mikko
name: Aalto, Timo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We demonstrate for the first time flat-top interleavers based on cascaded Mach-Zehnder interferometers (MZIs) which use only single multimode interferometers (MMIs) as power splitters. Our previous designs were based on 4-stage cascades of MZIs, where we used single MMIs and double MMIs to achieve 85:15 splitting ratio and 31:69 splitting ratio respectively. This time, we propose instead a greatly simplified 2-stage configuration using only single MMIs, including a standard 50:50 MMI, and two tapered MMIs to achieve 71:29 and 92:08 splitting ratios. We have designed the interleaver based on its geometrical representation on the Bloch sphere, then confirmed by efficient 2D simulations of the building blocks and of the whole structure, based on the eigenmode expansion method. We show how important is to take into account the phase relations between the outputs of all MMIs in order to make a working design. We have successfully fabricated devices with different channel spacing on our micron-scale silicon photonics platform, and measurement results confirmed their expected flat-top operation on a broad band. Using only single MMI splitters we can not only greatly outperform the bandwidth achieved by standard directional couplers, but we can also ensure much higher robustness to fabrication errors, also compared to previous demonstrations based on double MMIs. Indeed, when compared to those previous attempts, the new results prove tapered MMIs to be the most robust approach to achieve arbitrary splitting ratios.
description: 13 pages, 13 figures, Photonics West 2020
title: Quand l'évaluation modifie les institutions : comment l'hôpital est transformé par les indicateurs qualité (Policy Brief, n°20)
Creators: name: Bertillot, Hugo
Publisher: name: Sciences Po - LIEPP
Year: 2015
Subjects: subject: FOS: Social sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Ces dernières décennies, le secteur hospitalier français a fait l’objet de nombreuses réformes, dans l’ambition affichée de rationaliser son fonctionnement. Parmi celles-ci, le déploiement de nouveaux instruments de tarification (T2A) fait l’objet de toutes les attentions et de toutes les critiques. Pourtant, dans l’ombre de ces réformes à forte visibilité, se joue depuis la fin des années 1990 un autre mouvement majeur, opérant à bas bruit autour du déploiement d’instruments d’évaluation de la qualité des soins. Ce policy brief prend pour objet le déploiement d’indicateurs qualité (IQ) dans les établissements français depuis le milieu des années 2000. Construits comme une technologie douce pour rationaliser l’hôpital sans faire de vague, ces instruments colonisent les établissements français avec discrétion. Ils y instillent pourtant des changements décisifs : traçabilité accrue du soin, enracinement local de la médecine des preuves et auditabilité croissante de l’hôpital.
description: In recent decades, the French hospital sector has undergone many rationalization reforms. Among them, new payment instruments have attracted the most attention and criticisms. Yet, in the shadow of these highly visible reforms, another process has been quietly taking place. Various institutional devices aiming to assess quality of care have been deployed. This policy brief aims to investigate this silent but decisive evolution, by analyzing the implementation of “quality indicators” (QIs) in French hospitals since the mid2000s. These instruments have been built as a soft technology carrying a soft rationalization of the hospital sector. They colonize French institutions with discretion. Yet, they instill decisive changes such as an increased traceability of care, a growing local anchorage of evidence-based medicine and an increased auditability of hospitals.
Testing of the Seasonal Unit Root Hypothesis in the Price Indices of Agricultural Commodities in India
Creators: name: Tiwari, Aviral Kumar
name: Dutta, Subhendu
name: Dash, Aruna Kumar
name: Tiwari, Aviral Kumar
name: Dutta, Subhendu
name: Dash, Aruna Kumar
Publisher: name: Unknown
Year: 2017
Subjects: subject: Demand and Price Analysis
subject: seasonality, agricultural price indices, shocks, unit root tests, stationary

description: The study analyzed the persistence of shocks to the seasonal time series of the price indices of selected agricultural commodities in India. The seasonal unit root test procedure proposed by Hylleberg et al. (1990) and Beaulieu and Miron (1992) were used for 10 major price indices of agricultural commodities. The study covered the period January 2000 to January 2013. Overall results provide significant and robust evidence rejecting the presence of unit roots at all seasonal frequencies for cereals; condiments and spices; eggs, meat, and fish; pulses; and vegetables. For the rest of the commodities studied, evidence indicates that the seasonality present is partly deterministic and partly stationary stochastic. These findings have important policy implications for policymakers and research analysts.
title: Comment lutter contre la violence et le harcèlement à l'école et au collège ? Enseignements d'une expérimentation à grande échelle (Policy Brief, n°19)
Creators: name: Algan, Yann
name: Guyon, Nina
name: Huillery, Elise
Publisher: name: Sciences Po - LIEPP
Year: 2015
Subjects: subject: FOS: Social sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: La violence entre pairs à l’école est un phénomène préoccupant, en particulier compte tenu du potentiel impact de long terme sur le devenir des enfants. Nous évaluons ici les effets d’un dispositif de « Médiation Sociale en Milieu Scolaire » (MSMS) visant à réduire la violence entre pairs. Grâce à un protocole expérimental par assignation aléatoire, nous montrons que les effets du programme sont très importants lorsqu’il est mis en place par des médiateurs assez expérimentés : au collège, le taux de harcèlement ressenti est alors réduit de 11%. Précisément, le programme est extrêmement bénéfique pour les élèves les plus exposés à la violence : ainsi la probabilité de se sentir harcelé diminue de 46% chez les garçons de 6ème et de 26% chez les filles de 5ème. Des effets intéressants sont également visibles sur le bienêtre psychologique et social des élèves, ainsi que sur l’absentéisme des élèves et des enseignants.

description: Peer violence in schools is a worrying phenomenon, especially the potential longterm impact it may have on a child’s future. Here we evaluate the effects of a program of social mediation at school implemented to reduce peer violence. Through a randomized experimental design, we show that the effects of the program are very important when it is implemented by mediators who are over 25 years old: in junior high school, the rate of experienced harassment is reduced by 11%. Specifically, the program is extremely beneficial for students most exposed to violence: the probability of feeling harassed decreased by 46% in boys in 6th grade and by 26% in girls in 7th grade. Interesting effects on the psychological and social wellbeing of students, as well as on student absenteeism and teachers are also visible.
Price and Profitability Analysis of Major Pulses in India
Creators: name: Tripathi, Ashutosh Kr.
name: Tripathi, Ashutosh Kr.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Demand and Price Analysis
subject: Financial Economics
subject: agricultural prices, agricultural commodity, agriculture policy, pulses

description: This paper examines the causes of low growth in pulses production at the all-India level in terms of profitability of the farm business and the workings of the price policy. More precisely, it considers the effectiveness of price policy instruments in helping farmers gain sufficient income to promote investment, technology, and productivity. The analysis shows that the agricultural price policy, which aims to provide a remunerative and stable price environment to farmers, has been largely irrelevant in the case of pulses. It also suggests a review of the criteria for fixing the minimum support price of pulses and making it sensitive to prevailing market prices.
Cavitation and bubble collapse in hot asymmetric nuclear matter
Creators: name: Kolomietz, V. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The dynamics of embryonic bubbles in overheated, viscous and non-Markovian nuclear matter is studied. It is shown that the memory and the Fermi surface distortions significantly affect the hinderance of bubble collapse and determine a characteristic oscillations of the bubble radius. These oscillations occur due to the additional elastic force induced by the memory integral.
description: Revtex file (10 pages) and 3 figures
Broad-band spectral energy distribution of the X-ray transient Swift J1745-26 from outburst to quiescence
Creators: name: Chaty, Sylvain
name: Fortin, Francis
name: Lopez-Oramas, Alicia
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the X-ray transient Swift J1745-26, using observations obtained from its outburst in September 2012, up to its decay towards quiescence in March 2013. We obtained optical and infrared observations, through override programme at ESO/VLT with FORS2 and ISAAC instruments, and archival optical (VLT/VIRCAM), radio and X-ray (Swift) observations, to build the lightcurve and the broad-band Spectral Energy Distribution (SED) of Swift J1745-26. We show that, during its outburst and also during its decay towards quiescence, Swift J1745-26 SED can be adjusted, from infrared up to X-rays, by the sum of both a viscous irradiated multi-colour blackbody emitted by an accretion disk, and a synchrotron powerlaw at high energy. In the radio domain, the SED arises from synchrotron emission from the jet. While our SED fitting confirms that the source remained in the low/hard state during its outburst, we determine an X-ray spectral break at frequency 3.1 < nu_break < 3.4 x 10^14 Hz, and a radio spectral break at 10^12 Hz < nu_break < 10^13 Hz. We also show that the system is compatible with an absorption Av of ~7.69 magnitudes, lies within a distance interval of D~[2.6-4.8] kpc, with an upper limit of orbital period P_orb = 11.3 hours, and that the companion star is a late-type star of spectral type in the range K0 - M0 V, confirming that the system is a low-mass X-ray binary. We finally plot the position of Swift J1745-26 on an optical-infrared - X-ray luminosity diagram: its localization on this diagram is consistent with the source staying in the low-hard state during outburst and decay phases.
description: A&A in press, 8 pages, 6 figures, replaced with final version in press
Base Shear Reduction by using Optimum Size of Beams with same Grade of Concrete: An Informative Review
Creators: name: Jamle, Sagar
name: Dhakad, Pankaj Kumar
Publisher: name: figshare
Year: 2020
Subjects: subject: 90506 Structural Engineering
subject: FOS: Civil engineering

description: India is the second largest country in population all over the world and the land shortage is the common concern in large cities now a days. To reduce this problem multistorey buildings are the only option available because it provides more convenience in less space. And to make these structures economical, safe and convenient it is really important to add new ideas and technologies. The base shear reduction is the one of them. By using optimum size of the beam at the top floors of the building the base shear can be easily reduced under seismic loading. In this study various papers allied to this topic are reviewed in which an enormous work is done in this field earlier. With the help of review of research paper we came to know the conclusive outcome which forms the research objectives of our further technical study.
Assessment of Neighborhood and Spillover Effects on Technical Efficiency of Irrigated Rice Farmers
Creators: name: Villanueva, Donald B.
name: Pede, Valerien O.
name: Rodriguez, U-Primo E.
name: Sumalde, Zenaida M.
name: Garcia, Yolanda T.
name: Villanueva, Donald B.
name: Pede, Valerien O.
name: Rodriguez, U-Primo E.
name: Sumalde, Zenaida M.
name: Garcia, Yolanda T.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Farm Management
subject: Land Economics/Use
subject: Productivity Analysis
subject: technical efficiency, production function, rice, spatial dependence, spatial econometric

description: Neighborhood and spillover effects on technical efficiency were investigated among 270 randomly drawn farming households from 18 irrigated villages in Guimba, Nueva Ecija, Philippines, using a two-step procedure. In the first stage, stochastic frontier production function was used to estimate farmer’s technical efficiency; in the second stage, appropriate spatial econometric models of technical efficiency were estimated. Spatial econometric models adopted in this study detected spatial dependency on technical efficiency in the error term of the spatial model across seasons and locations, which can be associated with unobserved factors that similarly influence farmers’ technical efficiencies at the same time. Farm size, income, and regular contact and consultation with agricultural technicians were found to significantly affect technical efficiency. Results of the spatial regression show that owner-cultivator status and loamy soil are associated with increased technical efficiency. The local government of Guimba can use findings of this study in formulating agricultural policies and implementing essential interventions to improve the technical efficiency of rice farmers.
Xhosacetus Bianucci & Lambert & Post 2007, n. gen.
Creators: name: Bianucci, Giovanni
name: Lambert, Olivier
name: Post, Klaas
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Ziphiidae
Xhosacetus

description: Genus Xhosacetus n. gen.
 TYPE SPECIES. — Xhosacetus hendeysi n. gen., n. sp., by present designation.
ETYMOLOGY. — From Xhosa, one of the official languages of South Africa, characterized by prominent clicks (the word Xhosa itself starts with a click), somewhat reminiscent of the echolocative clicks produced by odontocetes, and from Latin “cetus”, whale. Gender masculine.
DIAGNOSIS. — Same as for the species.
description: Published as part of Bianucci, Giovanni, Lambert, Olivier & Post, Klaas, 2007, A high diversity in fossil beaked whales (Mammalia, Odontoceti, Ziphiidae) recovered by trawling from the sea floor off South Africa, pp. 561-618 in Geodiversitas 29 (4) on page 592, DOI: 10.5281/zenodo.4651080
Dynamics of a nanowire superlattice in an ac electric field
Creators: name: Zhang, Aizhen
name: Voon, L. C. Lew Yan
name: Willatzen, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: With a one-band envelope function theory, we investigate the dynamics of a finite nanowire superlattice driven by an ac electric field by solving numerically the time-dependent Schroedinger equation. We find that for an ac electric field resonant with two energy levels located in two different minibands, the coherent dynamics in nanowire superlattices is much more complex as compared to the standard two-level description. Depending on the energy levels involved in the transitions, the coherent oscillations exhibit different patterns. A signature of barrier-well inversion phenomenon in nanowire superlattices is also obtained.
description: 14 pages, 4 figures
Multi-boundary entanglement in Chern-Simons theory with finite gauge groups
Creators: name: Dwivedi, Siddharth
name: Addazi, Andrea
name: Zhou, Yang
name: Sharma, Puneet
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the multi-boundary entanglement structure of the states prepared in (1+1) and (2+1) dimensional Chern-Simons theory with finite discrete gauge group $G$. The states in (1+1)-$d$ are associated with Riemann surfaces of genus $g$ with multiple $S^1$ boundaries and we use replica trick to compute the entanglement entropy for such states. In (2+1)-$d$, we focus on the states associated with torus link complements which live in the tensor product of Hilbert spaces associated with multiple $T^2$. We present a quantitative analysis of the entanglement structure for both abelian and non-abelian groups. For all the states considered in this work, we find that the entanglement entropy for direct product of groups is the sum of entropy for individual groups, i.e. $\text{EE}(G_1 \times G_2) = \text{EE}(G_1)+\text{EE}(G_2)$. Moreover, the reduced density matrix obtained by tracing out a subset of the total Hilbert space has a positive semidefinite partial transpose on any bi-partition of the remaining Hilbert space.
description: 50 pages, 8 figures, matches with the published version
Amplified Spontaneous Emission and Random Lasing in MAPbBr$_3$ Halide Perovskite Single Crystals
Creators: name: Murzin, A. O.
name: Stroganov, B. V.
name: Günnemann, C.
name: Hammouda, S. B.
name: Shurukhina, A. V.
name: Lozhkin, M. S.
name: Emeline, A. V.
name: Kapitonov, Yu. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Halide perovskites are a promising optical gain media with high tunability and simple solution synthesis. In this study, two gain regimes, namely amplified spontaneous emission and random lasing, are demonstrated in same MAPbBr$_3$ halide perovskite single crystal. For this, photoluminescence is measured at a temperature of 4 K with pulsed femtosecond pumping by UV light with a 80 MHz repetition rate. Random lasing is observed in areas of the sample where a random resonator was formed due to cracks and crystal imperfections. In more homogeneous regions of the sample, the dominant regime is amplified spontaneous emission. These two regimes are reliably distinguished by the line width, the mode structure, the growth of the intensity after the threshold, and the degree of polarization of the radiation. The spectral localization of the stimulated emission well below the bound exciton resonance raises a question concerning the origin of the emission in halide perovskite lasers.
Smooth Cosmologies from M-theory
Creators: name: Lu, H.
name: Vazquez-Poritz, J. F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review two ways in which smooth cosmological evolution between two de Sitter phases can be obtained from M/string-theory. Firstly, we perform a hyperbolic reduction of massive IIA* theory to D=6 N=(1,1) SU(2)xU(1) gauged de Sitter supergravity, which supports smooth cosmological evolution between dS_4 x S^2 and a dS_6-type geometry. Secondly, we obtain four-dimensional de Sitter gravity with SU(2) Yang-Mills gauge fields from a hyperbolic reduction of standard eleven-dimensional supergravity. The four-dimensional theory supports smooth cosmological evolution between dS_2 x S^2 and a dS_4-type geometry. Although time-dependent, these solutions arise from a first-order system via a superpotential construction. For appropriate choices of charges, these solutions describe an expanding universe whose expansion rate is significantly larger in the past than in the future, as required for an inflationary model.
description: Latex, 7 pages, Contribution to Quantum Theory and Symmetries 3
Pterocetus Bianucci & Lambert & Post 2007, n. gen.
Creators: name: Bianucci, Giovanni
name: Lambert, Olivier
name: Post, Klaas
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Ziphiidae
Pterocetus

description: Genus Pterocetus n. gen.
 TYPE SPECIES. — Pterocetus benguelae n. gen., n. sp., by present designation.
ETYMOLOGY. — From Ancient Greek “pteryx”, wing, for the large wing-like preorbital processes and from Latin “cetus”, whale. Gender masculine.
DIAGNOSIS. — Same as for the species.
description: Published as part of Bianucci, Giovanni, Lambert, Olivier & Post, Klaas, 2007, A high diversity in fossil beaked whales (Mammalia, Odontoceti, Ziphiidae) recovered by trawling from the sea floor off South Africa, pp. 561-618 in Geodiversitas 29 (4) on page 595, DOI: 10.5281/zenodo.4651080
Economic and Demographic Factors Affecting the Propensity to Consume Specialty Eggs in the United States
Creators: name: Branch, Maggie
name: Dharmasena, Senarath
name: Branch, Maggie
name: Dharmasena, Senarath
Publisher: name: Unknown
Year: 2018
Subjects: subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Specialty eggs
subject: Nielsen data
subject: probit model

description: In recent years, the United States has seen an increase in the popularity of specialty eggs as a good source of healthy fats and proteins. This is due to an increased focus on healthy eating habits and the positive perception of natural and organic foods. In order to capitalize on this new trend, producers must strategize their marketing efforts to sell most directly to the appropriate target market. Using 2015 Nielsen Homescan database and probit regression model analysis, we were able to determine the estimated likelihoods of purchasing specialty eggs on several different household demographics. Also, we were able to determine the same information for consumers of eggs in general, for consumers of regular eggs, and for the consumers of both regular and specialty eggs. By using the information from this data, we are able to develop a consumer profile for consumers of specialty eggs that can be used by producers and their marketing team to determine the allocation of their respective resources. Results found that the average consumers of specialty eggs are young couples with a high income, an increasing income, a high education, and no children. The best areas in which to sell specialty eggs were found to be areas in the Pacific region of the United States that have high part time employment and small household sizes.
The 1975 type Japanese diet improves the gut microbial flora and inhibits visceral fat accumulation in mice
Creators: name: Asano, Masaki
name: Fumika Nakano
name: Nakatsukasa, Eriko
name: Tsuduki, Tsuyoshi
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: In this study, the 1975 type Japanese diet was prepared and its effects and related mechanism were examined in mice. Mice were assigned to three experimental groups, the CD group fed a control diet, the MD group fed a modern Japanese diet (MD), and the JD group fed the 1975 type Japanese diet (JD) for 4 weeks. MD and JD were low protein, high fat, and high carbohydrate diets compared to the CD. Total white adipose tissue weights were significantly increased in the MD group compared to those in the CD group and were decreased in the JD group compared to those in the MD group. In the JD group, adipocyte hypertrophy was inhibited and Hsl mRNA expression was enhanced in epididymal adipose tissue and the number of bacteria associated with the production of short chain fatty acids was increased. Therefore, the JD inhibits lipid accumulation in white adipose tissue. Actb: β-actin; ALT: alanine aminotransferase; ANOVA: analyses of variance; AST: aspartate aminotransferase; Fas: fatty acid synthase; G6pdx: glucose 6-phosphate dehydrogenase; HE: hematoxylin and eosin; HOMA-IR: Homeostatic model assessment for insulin resistance; Hsl: hormone-sensitive lipase; JD: 1975 type Japanese diet; Leptin: leptin; MD: modern Japanese diet; Me: malic enzyme; NEFA: non-esterified fatty acids; PL: phospholipids; Pparδ: peroxisome proliferator-activated receptor delta; Pparγ: peroxisome proliferator-activated receptor gamma; qRT-PCR: quantitative reverse transcriptase polymerase chain reaction; SAMP8: senescence-accelerated prone 8; SEM: standard error of the mean; Srebp1c: Sterol regulatory element binding protein 1c; TBARS: thiobarbituric acid reactive substance; TC: total cholesterol; TG: Triacylglycerol; V3: variable regions 3 To investigate the mechanism of effects of the 1975 type Japanese diet in humans, this study investigated variations in lipid metabolism and intestinal microflora in mice.
An answer to a question of Herman, Baker and Rippon concerning Siegel disks
Creators: name: Rempe, Lasse
Publisher: name: arXiv
Year: 2003
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 37F10 (primary) 30D05 (secondary)

description: We give a positive answer to a question of Herman, Baker and Rippon by showing that, in the exponential family, the boundary of every unbounded Siegel disk contains the singular value.
description: 4 pages, 1 figure; appeared as preprint 02/7 in the Berichtsreihe des Mathematischen Seminars der CAU Kiel (2002)
Eliminating COVID-19: The Impact of Travel and Timing
Creators: name: Siegenfeld, Alexander F.
name: Bar-Yam, Yaneer
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We analyze the spread of COVID-19 by considering the transmission of the disease among individuals both within and between regions. A set of regions can be defined as any partition of a population such that travel/social contact within each region far exceeds that between them. COVID-19 can be eliminated if the region-to-region reproductive number---i.e. the average number of other regions to which a single infected region will transmit the virus---is reduced to less than one. We find that this region-to-region reproductive number is proportional to the travel rate between regions and exponential in the length of the time-delay before region-level control measures are imposed. Thus, reductions in travel and the speed with which regions take action play decisive roles in whether COVID-19 is eliminated from a collection of regions. If, on average, infected regions (including those that become re-infected in the future) impose social distancing measures shortly after active spreading begins within them, the number of infected regions, and thus the number of regions in which such measures are required, will exponentially decrease over time. Elimination will in this case be a stable fixed point even after the social distancing measures have been lifted from most of the regions.
A Computationally Efficient Neural Network Invariant to the Action of Symmetry Subgroups
Creators: name: Kicki, Piotr
name: Ozay, Mete
name: Skrzypczyński, Piotr
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: I.2.6

description: We introduce a method to design a computationally efficient $G$-invariant neural network that approximates functions invariant to the action of a given permutation subgroup $G \leq S_n$ of the symmetric group on input data. The key element of the proposed network architecture is a new $G$-invariant transformation module, which produces a $G$-invariant latent representation of the input data. This latent representation is then processed with a multi-layer perceptron in the network. We prove the universality of the proposed architecture, discuss its properties and highlight its computational and memory efficiency. Theoretical considerations are supported by numerical experiments involving different network configurations, which demonstrate the effectiveness and strong generalization properties of the proposed method in comparison to other $G$-invariant neural networks.
Assessing the impact of the 2015 introduction of increased penalties and enhanced public awareness and enforcement activities on texting while driving among adults in Ontario, Canada
Creators: name: Wickens, Christine M.
name: Ialomiteanu, Anca R.
name: Cook, Steven
name: Hamilton, Hayley
name: Haya, Maryam
name: Ma, Tracey
name: Mann, Robert E.
name: Manson, Heather
name: McDonald, André
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Objective: Texting while driving (TWD) is considered a particularly hazardous form of distracted driving. It is highly prevalent among young drivers, but fewer studies of TWD among adult drivers exist and these prevalence rates may approach those of younger drivers. The effectiveness of measures to prevent distracted driving, and TWD specifically, is unclear. On September 1, 2015, Ontario introduced increased penalties for distracted driving accompanied by public education programs to increase public awareness of the new regulations. Provincial police also introduced enhanced enforcement efforts. The current study examined self-reported TWD in a representative sample of Ontario adults before and after introduction of the new legislation and the enhanced public education and enforcement efforts. Methods: Data were based on telephone interviews with 1,846 respondents who reported having driven in the past year. Data were derived from the 2015–2016 cycles of the Centre for Addiction and Mental Health (CAMH) Monitor, an ongoing cross-sectional telephone survey of adults aged 18+ years in Ontario, Canada. A binary logistic regression analysis of TWD in the previous 30 days was conducted, adjusting for demographic characteristics (sex, age), driving exposure, and introduction of the legislation (before versus after). Results: The proportion of the sample reporting TWD declined significantly from 37.6% before the law was introduced to 24.2% after the law was introduced. The impact appeared to be most pronounced among drivers who reported TWD more frequently. Adjusted odds of TWD declined 42% following introduction of the legislation and associated enhanced public education and enforcement. Conclusions: These results identify a decrease in TWD following the introduction of enhanced penalties with corresponding public education and enforcement efforts, adding to the existing evaluative evidence base to inform transportation safety policy. These results also support the need to examine TWD and its determinants among all age groups.
The Feasibility of a Lionfish Meat Market in the U.S. Virgin Islands: Consumer Willingness to Pay
Creators: name: Simnitt, Skyler
name: Sweeney Tookes, Jennifer
name: Larking Sherry
name: Bennett-Martin, Paulita
name: Harris, Holden
name: Mioulis, Natalie
name: Groenevelt, Katherine
name: Rudd, Muray
name: Page, Michael
name: Boss, Jason
name: Yandle, Tracy
name: Simnitt, Skyler
name: Sweeney Tookes, Jennifer
name: Larking Sherry
name: Bennett-Martin, Paulita
name: Harris, Holden
name: Mioulis, Natalie
name: Groenevelt, Katherine
name: Rudd, Muray
name: Page, Michael
name: Boss, Jason
name: Yandle, Tracy
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Food Consumption/Nutrition/Food Safety
subject: CVM
subject: Lionfish
subject: WTP

description: Invasive lionfish are destroying Florida’s reefs and despite stakeholders’ best efforts, they have made little progress slowing down the destruction. For nearly a decade researchers and policy makers have encouraged the consumption of lionfish meat as an economically sustainable means of curtailing the fish’s proliferation, yet there is little research assessing the economic feasibility of a new market for lionfish meat. Using survey data collected in the United States Virgin Islands (USVI), researchers estimate consumers’ mean willingness to pay (WTP) using the Turnbull method, additionally they observe how individual preferences and characteristics effect consumer WTP usig a double bounded contingent valuation logit regression. Findings suggest that both locals and tourists are willing to purchase lionfish at prices within the range of other white fish entrées at restaurants in the USVI. These findings provide valuable insight on the demand side of a potential market in the USVI, and are a critical step in assessing the viability of establishing a commercial fishery targeting lionfish in the territory and surrounding region.
Local invariants of stabilizer codes
Creators: name: Nest, Maarten Van den
name: Dehaene, Jeroen
name: De Moor, Bart
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In [Phys. Rev. A 58, 1833 (1998)] a family of polynomial invariants which separate the orbits of multi-qubit density operators $ρ$ under the action of the local unitary group was presented. We consider this family of invariants for the class of those $ρ$ which are the projection operators describing stabilizer codes and give a complete translation of these invariants into the binary framework in which stabilizer codes are usually described. Such an investigation of local invariants of quantum codes is of natural importance in quantum coding theory, since locally equivalent codes have the same error-correcting capabilities and local invariants are powerful tools to explore their structure. Moreover, the present result is relevant in the context of multipartite entanglement and the development of the measurement-based model of quantum computation known as the one-way quantum computer.
description: 10 pages, 1 figure. Minor changes. Accepted in Phys. Rev. A
Probing beyond-Kerr spacetimes with inspiral-ringdown corrections to gravitational waves
Creators: name: Carson, Zack
name: Yagi, Kent
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gravitational waves from the explosive merger of distant black holes are encoded with details regarding the complex extreme-gravity spacetime present at their source. Famously described by the Kerr spacetime metric for rotating black holes in general relativity, what if effects beyond this theory are present? One way to efficiently test this hypothesis is to first obtain a metric which parametrically deviates from the Kerr metric in a model-independent way. Given such a metric, one can then predict the ensuing corrections to both the inspiral and ringdown portions of the gravitational waveform for black holes present in the new spacetime. With these tools in hand, one can then test gravitational wave signals for such effects by two different methods, (i) inspiral-merger-ringdown consistency test, and (ii) parameterized test. In this paper, we demonstrate the exact recipe one needs to do just this. We first derive parameterized corrections to the waveform inspiral, ringdown, and remnant properties for a generic non-Kerr spacetime and apply this to two example beyond-Kerr spacetimes each parameterized by a single non-Kerr parameter. We then predict the beyond-Kerr parameter magnitudes required in an observed gravitational wave signal to be statistically inconsistent with the Kerr case in general relativity. We find that the two methods give very similar bounds. The constraints found with existing gravitational-wave events are comparable to those from x-ray observations, while future gravitational-wave observations using Cosmic Explorer (Laser Interferometer Space Antenna) can improve such bounds by two (three) orders of magnitude.
description: 18 pages, 4 figures; Updated to match published version
UBC Farm Marketing Plan Proposal
Creators: name: Briggs, Courtney
name: Bell, Jessica
name: Farrell, Natalie
name: Ko, Kelly
name: Li, Kellie
name: Wong, Melinda
name: Yamada, Emi
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
H-2A Guest-workers Program: Adoption and Usage by Southeastern Growers
Creators: name: Simnitt, Skyler
name: Farnsworth, Derek
name: Onel, Gulcan
name: Roka, Fritz
name: Simnitt, Skyler
name: Farnsworth, Derek
name: Onel, Gulcan
name: Roka, Fritz
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Farm Management
subject: Labor and Human Capital
subject: H-2A
subject: farmworkers
subject: spatial-econometrics
subject: labor

description: With declining rates of migration from Mexico and a dwindling supply of willing domestic workers, specialty crop producers in the southeastern United States increasingly turn to the H-2A, temporary agricultural workers program, to meet their labor demands. Despite the program’s growing popularity, there do not exist any quantitative studies examining the factors that contribute to widely different participation rates by geography. This research examines Southeast growers’ participation rates in the H-2A program with respect to relevant social and economic factors at the county, state, and national level. Our primary research goal is to model the firm level decision to use the H-2A visa program, and determine the presence and magnitude of contagion effects in the decision process. We use a spatial-autoregressive method to model growers’ usage rates, and detect spatial-correlation between individuals and neighbors’ usage levels. Furthermore, we model producers’ adoption decision with a hazard model, wherein we regress growers’ decision to participate on neighbors’ adoption rate in preceding years, along with other relevant factors. Our main findings corroborate the influence of contagion effects on grower’s decision to use the H-2A program. More specifically we find that a growers’ odds of adopting the program increase significantly given higher participation rates among his or her neighbors. Our findings are pertinent to policy makers who seek to expand usage of the H-2A and other guest-worker programs, and our methods can be adapted to use in other policy and program related contexts.
Microwave Residual Surface Resistance of Superconductors
Creators: name: Rabinowitz, Mario
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two distinct models account for the microwave residual surface resistance of superconducting cavities with equally good agreement with the measured temperature and frequency dependence. In presenting his phonon-generation model, Passow claimed that Rabinowitz' fluxoid power-loss model of residual resistance does not fit the experimental data, whereas his does. In fact, the two models have essentially the same temperature and frequency dependence. Furthermore, Passow's phonon-generation model cannot explain the observed sensitivity to details of sample preparation and history, while the fluxoid model can.
description: 4 pages