cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fixed point theory and trace for bicategories
Creators: name: Ponto, Kate
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 55M20

description: The Lefschetz fixed point theorem follows easily from the identification of the Lefschetz number with the fixed point index. This identification is a consequence of the functoriality of the trace in symmetric monoidal categories. There are refinements of the Lefschetz number and the fixed point index that give a converse to the Lefschetz fixed point theorem. An important part of this theorem is the identification of these different invariants. We define a generalization of the trace in symmetric monoidal categories to a trace in bicategories with shadows. We show the invariants used in the converse of the Lefschetz fixed point theorem are examples of this trace and that the functoriality of the trace provides some of the necessary identifications. The methods used here do not use simplicial techniques and so generalize readily to other contexts.
description: 107 pages
Cosmic rays from trans-relativistic supernovae
Creators: name: Budnik, R.
name: Katz, B.
name: MacFadyen, A.
name: Waxman, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive constraints that must be satisfied by the sources of ~10^{15} to ~10^{18} eV cosmic rays, under the assumption that the sources are Galactic. We show that while these constraints are not satisfied by ordinary supernovae (SNe), which are believed to be the sources of <10^{15} eV cosmic rays, they may be satisfied by the recently discovered class of trans-relativistic supernovae (TRSNe), which were observed in association with gamma-ray bursts. We define TRSNe as SNe that deposit a large fraction, f_R>10^{-2}, of their kinetic energy in mildly relativistic, γβ>1, ejecta. The high velocity ejecta enable particle acceleration to ~10^{18} eV, and the large value of f_R (compared to f_R~10^{-7} for ordinary SNe) ensures that if TRSNe produce the observed ~10^{18} eV cosmic ray flux, they do not overproduce the flux at lower energies. This, combined with the estimated rate and energy production of TRSNe, imply that Galactic TRSNe may be the sources of cosmic rays with energies up to ~10^{18}eV .
description: Accepted to ApJ. Expanded abstract, introduction, discussion
A Problem with the Clustering of Recent Measures of the Distance to the Large Magellanic Cloud
Creators: name: Schaefer, Bradley E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The distance to the Large Magellanic Cloud (LMC) has long been of key importance for the distance ladder and the distances to all galaxies, and as such many groups have provided measurements of its distance modulus (μ) with many methods and various means of calibrating each method. Before the year 2001, the many measures spanned a wide range (roughly 18.1 < μ< 18.8) with the quoted error bars being substantially smaller than the spread, and hence the consensus conclusion being that many of the measures had their uncertainties being dominated by unrecognized systematic problems. In 2001, the Hubble Space Telescope Key Project (HSTKP) on the distance scale made an extensive analysis of earlier results and adopted the reasonable conclusion that the distance modulus is 18.50+-0.10 mag, and the community has generally accepted this widely popularized value. After 2002, 31 independent papers have reported new distance measures to the LMC, and these cluster tightly around μ=18.50 mag. Indeed, these measures cluster too tightly around the HSTKP value, with 68% of the measures being within 0.5-sigma of 18.50 mag. A Kolmogorov-Smirnov test proves that this concentration deviates from the expected Gaussian distribution at a >3-sigma probability level. This concentration is a symptom of a worrisome problem. Interpretations considered include correlations between papers, widespread over-estimation of error bars, and band-wagon effects. This note is to alert workers in the field that this is a serious problem that should be addressed.
description: Astronomical Journal in press, 19 pages, 3 figures
The ALICE detector and trigger strategy for diffractive and electromagnetic processe
Creators: name: Schicker, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The ALICE detector at the Large Hadron Collider (LHC) consists of a central barrel, a muon spectrometer, zero degree calorimeters and additional detectors which are used for trigger purposes and for event classification. The main detector systems of relevance for measuring diffractive and electromagnetic processes are described. The trigger strategy for such measurements is outlined. The physics potential of studying diffractive and electromagnetic processes at the LHC is presented by discussing possible signatures of the Odderon.
description: 6 pages, 8 figures, Proceedings workshop on "High energy photon collisions at the LHC", CERN, apr 22-25, 2008
Composing Quantum Protocols in a Classical Environment
Creators: name: Fehr, Serge
name: Schaffner, Christian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a general security definition for cryptographic quantum protocols that implement classical non-reactive two-party tasks. The definition is expressed in terms of simple quantum-information-theoretic conditions which must be satisfied by the protocol to be secure. The conditions are uniquely determined by the ideal functionality F defining the cryptographic task to be implemented. We then show the following composition result. If quantum protocols pi_1,...,pi_k securely implement ideal functionalities F_1,...,F_k according to our security definition, then any purely classical two-party protocol, which makes sequential calls to F_1,...,F_k, is equally secure as the protocol obtained by replacing the calls to F_1,...,F_k with the respective quantum protocols pi_1,...,pi_k. Hence, our approach yields the minimal security requirements which are strong enough for the typical use of quantum protocols as subroutines within larger classical schemes. Finally, we show that recently proposed quantum protocols for oblivious transfer and secure identification in the bounded-quantum-storage model satisfy our security definition, and thus compose in the above sense.
description: 24 pages. v2: 25 pages, minor improvements, added clarifications, updated references
Boolean functions on $S_n$ which are nearly linear
Creators: name: Filmus, Yuval
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We show that if $f\colon S_n \to \{0,1\}$ is $ε$-close to linear in $L_2$ and $\mathbb{E}[f] \leq 1/2$ then $f$ is $O(ε)$-close to a union of "mostly disjoint" cosets, and moreover this is sharp: any such union is close to linear. This constitutes a sharp Friedgut-Kalai-Naor theorem for the symmetric group. Using similar techniques, we show that if $f\colon S_n \to \mathbb{R}$ is linear, $\Pr[f \notin \{0,1\}] \leq ε$, and $\Pr[f = 1] \leq 1/2$, then $f$ is $O(ε)$-close to a union of mostly disjoint cosets, and this is also sharp; and that if $f\colon S_n \to \mathbb{R}$ is linear and $ε$-close to $\{0,1\}$ in $L_\infty$ then $f$ is $O(ε)$-close in $L_\infty$ to a union of disjoint cosets.
description: 27 pages
The symbiotic star CH Cygni. II. The broad Ly alpha emission line explained by shocks
Creators: name: Contini, M.
name: Angeloni, R.
name: Rafanelli, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context. In 1985, at the end of the active phase 1977-1986, a broad (4000 km/s) Ly alpha line appeared in the symbiotic system CH Cygni that had never been observed previously. Aims. In this work we investigate the origin of this anomalous broad Ly alpha line. Methods. We suggest a new interpretation of the broad Ly alpha based on the theory of charge transfer reactions between ambient hydrogen atoms and post-shock protons at a strong shock front. Results. We have found that the broad Ly alpha line originated from the blast wave created by the outburst, while the contemporary optical and UV lines arose from the nebula downstream of the expanding shock in the colliding wind scenario.
description: 5 pages, 2 figures, accepted for publication in A&A on 7th April 2008
A spatial interpretation of emerging superconductivity in lightly doped cuprates
Creators: name: Deutscher, Guy
name: de Gennes, Pierre-Gilles
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The formation of domains comprising alternating 'hole rich' and 'hole poor' ladders recently observed by Scanning Tunneling Microscopy by Kohsaka et al., on lightly hole doped cuprates, is interpreted in terms of an attractive mechanism which favors the presence of doped holes on Cu sites located each on one side of an oxygen atom. This mechanism leads to a geometrical pattern of alternating hole-rich and hole-poor ladders with a periodicity equal to 4 times the lattice spacing in the CuO plane, as observed experimentally. To cite this article: G. Deutscher, P.-G. de Gennes, C. R. Physique 8 (2007).
description: 4 pages, 3 figuers
An alternative form of the fundamental plasma emission through the coalescence of Z-mode waves with whistlers
Creators: name: Ni, Sulan
name: Chen, Yao
name: Li, Chuanyang
name: Sun, Jicheng
name: Ning, Hao
name: Zhang, Zilong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Plasma emission (PE), i.e., electromagnetic radiation at the plasma frequency and its second harmonic, is a general process occurring in both astrophysical and laboratory plasmas. The prevailing theory presents a multi-stage process attributed to the resonant coupling of beam-excited Langmuir waves with ion-acoustic waves. Here we examine another possibility of the fundamental PE induced by the resonant coupling of Z-mode and whistler (W) waves. Earlier studies have been controversial in the plausibility and significance of such process in plasmas. In this study we show that the matching condition of three wave resonant interaction (Z+W ! O) can be satisfied over a wide regime of parameters based on the magnetoionic theory, demonstrate the occurrence of such process and further evaluate the rate of energy conversion from the pumped Z or W mode to the fundamental O mode with particle-in-cell (PIC) simulations of wave pumping. The study presents an alternative form of the fundamental PE, which could possibly play a role in various astrophysical and laboratory scenarios with both Z and W modes readily excited through the electron cyclotron maser instability.
A Local Universe Host for the Repeating Fast Radio Burst FRB 20181030A
Creators: name: Bhardwaj, M.
name: Kirichenko, A. Yu.
name: Michilli, D.
name: Mayya, Y. D.
name: Kaspi, V. M.
name: Gaensler, B. M.
name: Rahman, M.
name: Tendulkar, S. P.
name: Fonseca, E.
name: Josephy, Alexander
name: Leung, C.
name: Merryfield, Marcus
name: Petroff, Emily
name: Pleunis, Z.
name: Sanghavi, Pranav
name: Scholz, P.
name: Shin, K.
name: Smith, Kendrick M.
name: Stairs, I. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report on the host association of FRB 20181030A, a repeating fast radio burst (FRB) with a low dispersion measure (DM, 103.5 pc cm$^{-3}$) discovered by CHIME/FRB Collaboration et al. (2019a). Using baseband voltage data saved for its repeat bursts, we localize the FRB to a sky area of 5.3 sq. arcmin (90% confidence). Within the FRB localization region, we identify NGC 3252 as the most promising host, with an estimated chance coincidence probability $< 2.5 \times 10^{-3}$. Moreover, we do not find any other galaxy with M$_{r} < -15$ AB mag within the localization region to the maximum estimated FRB redshift of 0.05. This rules out a dwarf host 5 times less luminous than any FRB host discovered to date. NGC 3252 is a star-forming spiral galaxy, and at a distance of $\approx$ 20 Mpc, it is one of the closest FRB hosts discovered thus far. From our archival radio data search, we estimate a 3$σ$ upper limit on the luminosity of a persistent compact radio source (source size $
description: Accepted for publication in ApJL
Social structure of Andean deer (Hippocamelus antisensis) in southern Peru
Creators: name: Merkt, Juan R.
Publisher: name: University of British Columbia
Year: 2010

description: The taruca (Hippocamelus antisensis) is the only deer species found permanently in rugged mountainous habitat above the tree line. I studied the social organization of this deer in relation to its reproductive cycle and habitat use in the high Andes of southern Peru. Tarucas bred seasonally. Most fawns were observed towards the end of the rainy season between February and April. Mating was most common in June, during the dry season, and antler-shedding in males occurred in September/October, at the onset of the rainy season. The deer lived in social groups and, unlike most seasonally breeding cervids, formed large mixed-sex groups nearly all year. During the birth season, however, all pregnant females segregated to form female associations. At this time, adult males were found equally in mixed-sex groups or in small all-male groups. These groups differed in their habitat use. Female groups used areas of higher elevation, steeper slopes, and greater rock-cover than either male or mixed-sex groups. I suggest that selection of more rugged and concealed habitats by lactating females is primarily an antipredator strategy to reduce risk of predation on fawns. Tarucas are compared with other social Cervidae and with their ecological counterpart: the mountain Caprinae. The social structure of Hippocamelus resembles that of wild goats (Capra spp) and other Caprinae of similar ecology but it differs from that of wild sheep (Ovis spp).
Reversible Watermarking in Deep Convolutional Neural Networks for Integrity Authentication
Creators: name: Guan, Xiquan
name: Feng, Huamin
name: Zhang, Weiming
name: Zhou, Hang
name: Zhang, Jie
name: Yu, Nenghai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep convolutional neural networks have made outstanding contributions in many fields such as computer vision in the past few years and many researchers published well-trained network for downloading. But recent studies have shown serious concerns about integrity due to model-reuse attacks and backdoor attacks. In order to protect these open-source networks, many algorithms have been proposed such as watermarking. However, these existing algorithms modify the contents of the network permanently and are not suitable for integrity authentication. In this paper, we propose a reversible watermarking algorithm for integrity authentication. Specifically, we present the reversible watermarking problem of deep convolutional neural networks and utilize the pruning theory of model compression technology to construct a host sequence used for embedding watermarking information by histogram shift. As shown in the experiments, the influence of embedding reversible watermarking on the classification performance is less than 0.5% and the parameters of the model can be fully recovered after extracting the watermarking. At the same time, the integrity of the model can be verified by applying the reversible watermarking: if the model is modified illegally, the authentication information generated by original model will be absolutely different from the extracted watermarking information.
description: Accepted to ACM MM 2020
Projeto Multidisciplinar Língua Portuguesa
Creators: name: de Sousa e Silva Filho, Luis
Publisher: name: Zenodo
Year: 2023
Subjects: cordel
sextilha
versos

description: Através de um encadeamento de ideias, sendo essas reunidas com a ajuda de fontes bibliográficas retiradas de sítios confiáveis, e também pesquisadas no livro Gatos Órfãos, este projeto mostrou uma sincronia entre ensino e aprendizagem, ao mesmo tempo em que deixou uma contribuição para a comunidade educacional. Dessa forma, este projeto ajuda o sistema acadêmico, quando também incentiva outras pesquisas relacionadas ao cordelismo, estilo linguístico muito importante para a Língua Portuguesa.
Quasi-Exactly Solvable Schrödinger Operators in Three Dimensions
Creators: name: Boisvert, Mélisande Fortin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 81Q70, 22E70, 53C80

description: The main contribution of our paper is to give a partial classification of the quasi-exactly solvable Lie algebras of first order differential operators in three variables, and to show how this can be applied to the construction of new quasi-exactly solvable Schrödinger operators in three dimensions.
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
On Lack & Joy: Contextualizing Educators' Suffering & Well Being
Creators: name: Eppert, Claudia
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2018

description: This essay explores Maggie Berg's and Barbara K. Seeber’s The Slow Professor with reference to David Loy’s A Buddhist History of the West: Studies in Lack, in which he examines lack and its history in philosophy, theology, and Western institutions from medieval times to the present day.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 12 No 2 (2018)
The rarity of very red TNOs in the scattered disk
Creators: name: Ali-Dib, Mohamad
name: Marsset, Michael
name: Wong, Wing-Cheung
name: Dbouk, Rola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We investigate the origins of the photometrically Very Red and Less Red Trans-Neptunian Objects. We first reanalyse the dataset of Marsset et al. 2019 and find that, in addition to the known color-inclination correlation in hot TNOs, a similar trend exists for color-eccentricity. We show that VR TNOs are sharply constrained to eccentricities < 0.42 and inclinations < 21 deg, leading to a paucity of VR scattered disk and distant MMR objects. We then interpret these findings using N-body simulations accounting for Neptune's outward migration into a massless particles disk, and find that these observations are best reproduced with a LR-to-VR color transition line between 38 and 42 AU in the primordial disk, separating the objects' formation locations. For an initial surface density profile $Σ\propto 1/r^2$, a color transition around 38 AU is needed to explain the high abundance of VR plutinos but creates too many VR scattered disk objects, while a transition line around 42 AU seems to better reproduces the scattered disk colors but creates virtually no VR plutinos. Our simulations furthermore show that the rarity of VR particles at high eccentricity is possibly due to the absence of sweeping higher order MMRs, and secular resonances, beyond 42 AU. Inspecting individual populations, we show that the majority of VR SDOs originate as objects trapped in Neptune's second and third order MMRs. These then evolve due to diffusion, scattering, Kozai-Lidov cycles, and secular resonances into their current orbits. Future unbiased color surveys are crucial to better constrain the TNOs dynamical origins.
description: Accepted for publication in The Astronomical Journal. 25 pages, 15 figures
Role of a fractal shape of the inclusions on acoustic attenuation in a nanocomposite
Creators: name: Luo, Haoming
name: Ren, Yue
name: Gravouil, Anthony
name: Giordano, Valentina M.
name: Zhou, Qing
name: Wang, Haifeng
name: Tanguy, Anne
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Nanophononic materials are promising to control the transport of sound in the GHz range and heat in the THz range. Here we are interested in the influence of a dendritic shape of inclusion on acoustic attenuation. We investigate a Finite Element numerical simulation of the transient propagation of an acoustic wave-packet in 2D nanophononic materials with circular or dendritic inclusions periodically distributed in matrix. By measuring the penetration length, diffusivity, and instantaneous wave velocity, we find that the multi-branching tree-like form of dendrites provides a continuous source of phonon-interface scattering leading to an increasing acoustic attenuation. When the wavelength is far less than the inter-inclusion distance, we report a strong attenuation process in the dendritic case which can be fitted by a compressed exponential function with $β>1$.
description: 14 pages, 11 figures
The Discourse of Educational Professionalization and Laura Bragg
Creators: name: McKnight, Douglas
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2007

description: In Louise Anderson Allen’s self-described critical feminist biography, Laura Bragg is portrayed as a second generation New Woman who attained “political, social, and economic equality for herself on her own terms” (Allen, 1997, abstract) through sheer perseverance, personality and the righteous belief in a Progressive mission -- to make museums publicly accessible spheres and outreach centers of cultural history. This charge was born of the Progressive impulse to educate, enrich, reform and, hopefully, inspire the unaware and the impoverished to become educated about their condition.

Allen performs an important service in this biography. She interprets significant events and themes of Bragg’s life from the lens of early feminist attempts to gain access to the public realm and have a voice in institutional settings. Allen renders Bragg’s museum productions as a kind of prototype to the reinventing of museums as public educational domains where cultural history of various places and times could be taught and learned. We now take such social and educational functions of museums for granted.

However, Allen illustrates how difficult a task it was in the early 1900s for Bragg and others to contribute to the creation of an institution with such democratic and social reform intent. Bragg operated within heavy constraints, specifically as a northern educated woman in the South who positioned herself as a social Progressive at a time when Charleston, South Carolina, was not particularly interested in post-bellum national life. And, of course, Bragg’s situation was doubly complicated: she was nearly deaf, and she carried on intimate associations with other women at a time when such relations were beginning to be scrutinized and defined by the medical community as abnormal and, as such, hazardous to the public health.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 3 (2007)
Muse, Mind and Memory:  Meditating on Louise Allen’s Biography of Laura Bragg
Creators: name: Grumet, Madeleine R
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2007

description: Louise Allen’s study of Laura Bragg reminded me of this jar in Tennessee, for in her account of this Bragg’s work as a botanist, a librarian, a museum administrator and educator, we read a history of her work: the presentation of things. This process of gathering objects together so that they will draw the attention of others is one of the processes of curriculum, as we gather together the stuff of the world that we deem worthy of our children’s notice. Look, look, the pointing finger is the pedagogical gesture embodied in the work of Laura Bragg and in educators’ efforts to share the worlds they care about with children.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 3 (2007)
A Reading on Four Registers: Educational Reforms, Democratic Cultures, Research Methodologies, and the Question of the Posts
Creators: name: Malewski, Erik
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2007

description: This essay situates educational reform discourse with its emphasis on transparent understanding and philosophies of control in tension with post-structural and critical discourse suspicious of correct readings and generalizable claims. Employing the idea of “cross reading” research projects to map the friction between texts that fix interpretations and those that incite a proliferation of readings, the essay argues for explicitly using issues of omission, misrecognition, and mishaps to unsettle conceptions of research into educational reform. What these tensions might mean for conducting school-based research is addressed on four registers that assist in moving with and through contemporary instrumental knowledge claims: from dualisms toward  complexities, sneaky kid and reading difference differently, reform as deliberative art, and post-reconceptualization in post-post times. The essay concludes with a tentative exploration of a trilectical educational praxis that positions inconceivability as a performative site for thinking through educational reform in as-yet unknown ways.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 3 (2007)
Decision support systems for land evaluation : theoretical and practical development
Creators: name: Miller, David B.
Publisher: name: University of British Columbia
Year: 2010

description: The challenge of resolving land use allocation and policy questions depends to a large degree on the conversion of data into information, and the effective integration of information into the decision process. Land evaluation is one of the fundamental means of generating information for land planning. Information products have however, been inconsistently and ineffectively used in the decision process. This thesis develops a decision centered approach to land evaluation as a response to this concern. Included in this development is a description of important theoretical concepts, as well as a practical demonstration of the use of decision support systems as a design approach. Initially, a conceptual model is introduced illustrating the technical and use components of information generation, as well as the adaptive design cycle. Various terms and techniques involved in the technical aspects of land evaluation are reviewed. Decision making concepts including decision structure, environment, analysis, and criteria are outlined. Three existing methods of land evaluation are then compared from a use or decision making perspective. Having completed a review of current approaches, Decision Support Systems are introduced as a logical progression towards a decision centered approach. Decision Support System design is demonstrated using a portion of the Central Fraser Valley Regional District as a case study area combined with an interactive microcomputer land planning tool (LANDPLAN). The demonstration emphasizes the advantages of the flexible, interactive capabilities of Decision Support Systems in aiding the decision process. Iterative design is also promoted with several needs identified if a more complete system is to be developed. In particular, data on strategic long term supply and demand factors is required, as well as continuous rating functions for assessing land performance.
"Shape up America!": Understanding Fatness as a Curriculum Project
Creators: name: Azarito, Laura
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2007

description: Like children’s academic performance in school, children’s body weight and fitness are under siege. Fatness has become a central issue in the school curriculum as schools are being held accountable for obesity among children. Cultural discourses of “bodies at risk,” and a “society at risk” in the United States, including the circulation of “fat phobia” (Evans, Rich, & Davies, 2004; Gard, 2004; Gard & Wright, 2001) reflect a pervasive social preoccupation with the body. Doctors, epidemiologists, kinesiology researchers, and fitness advocates have declared war against fatness, contending that obesity/overweight is an “epidemic,” a world problem, a “public health crisis among children worldwide” (Whitlock, Williams, Gold, Smith, & Shipman, 2006, p. 125). Schools, as microcosms of society, are not immune to, but are implicated in the production of these alarming discourses. To respond to this crisis, schools have been called to embrace, be responsible for, and help young people develop a healthy, slim physicality.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 3 (2007)
RESULTS OF A COMPARATIVE TESTING OF THE NEWLY DEVELOPED POTATO VARIETY "TASHKENT ERTAGISI" PLANTED IN THE VARIETY TESTING NURSERY IN AN EARLY PERIOD
Creators: name: Nizomov, Rustam
name: Rakhmatullayev, Jasurbek
Publisher: name: Zenodo
Year: 2025

description: This article presents the results of comparative testing of the newly developed potato variety “Tashkent Ertagisi” against the standard “Sante” variety in the variety testing nursery during the early planting period.
Quantum Dynamics on the Worldvolume from Classical su(n) Cohomology
Creators: name: Isidro, José M.
name: de Córdoba, Pedro Fernández
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A key symmetry of classical $p$-branes is invariance under worldvolume diffeomorphisms. Under the assumption that the worldvolume, at fixed values of the time, is a compact, quantisable Kähler manifold, we prove that the Lie algebra of volume-preserving diffeomorphisms of the worldvolume can be approximated by $su(n)$, for $n\to\infty$. We also prove, under the same assumptions regarding the worldvolume at fixed time, that classical Nambu brackets on the worldvolume are quantised by the multibrackets corresponding to cocycles in the cohomology of the Lie algebra $su(n)$.
description: This is a contribution to the Special Issue on Deformation Quantization, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Joint Gas and Stellar Dynamical Models of WLM: An isolated dwarf galaxy within a cored, prolate DM halo
Creators: name: Leung, Gigi Y. C.
name: Leaman, Ryan
name: Battaglia, Giuseppina
name: van de Ven, Glenn
name: Brooks, Alyson M.
name: Peñarrubia, Jorge
name: Venn, Kim A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present multi-tracer dynamical models of the low mass ($M_{*} \sim 10^{7}$), isolated dwarf irregular galaxy WLM in order to simultaneously constrain the inner slope of the dark matter (DM) halo density profile ($γ$) and flattening ($q_\mathrm{DM}$), and the stellar orbital anisotropy ($β_{z}, β_{r}$). For the first time, we show how jointly constraining the mass distribution from the HI gas rotation curve and solving the Jeans' equations with discrete stellar kinematics leads to a factor of $\sim2$ reduction in the uncertainties on $γ$. The mass-anisotropy degeneracy is also partially broken, leading to reductions on uncertainty by $\sim 30\%$ on $M_\mathrm{vir}$ (and $\sim 70\%$ at the half-light radius) and $\sim 25\%$ on anisotropy. Our inferred value of $γ= 0.3 \pm 0.1$ is robust to the halo geometry, and in excellent agreement with predictions of stellar feedback driven DM core creation. The derived prolate geometry of the DM halo with $q_\mathrm{DM} = 2 \pm 1$ is consistent with $Λ$CDM simulations of dwarf galaxy halos. While self-interacting DM (SIDM) models with $σ/m_{X} \sim 0.6$ can reproduce this cored DM profile, the interaction events may sphericalise the halo. The simultaneously cored and prolate DM halo may therefore present a challenge for SIDM. Finally we find that the radial profile of stellar anisotropy in WLM ($β_{r}$) follows a nearly identical trend of increasing tangential anisotropy to the classical dSphs, Fornax and Sculptor. Given WLM's orbital history, this result may call into question whether such anisotropy is a consequence of tidal stripping in only one pericentric passage or if it instead is a feature of the largely self-similar formation and evolutionary pathways for some dwarf galaxies.
description: arxiv version, published in MNRAS. 23 pages, 14 figures
Simulations of Large-scale WiFi-based Wireless Networks: Interdisciplinary Challenges and Applications
Creators: name: Nekovee, Maziar
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Wireless Fidelity (WiFi) is the fastest growing wireless technology to date. In addition to providing wire-free connectivity to the Internet WiFi technology also enables mobile devices to connect directly to each other and form highly dynamic wireless adhoc networks. Such distributed networks can be used to perform cooperative communication tasks such ad data routing and information dissemination in the absence of a fixed infrastructure. Furthermore, adhoc grids composed of wirelessly networked portable devices are emerging as a new paradigm in grid computing. In this paper we review computational and algorithmic challenges of high-fidelity simulations of such WiFi-based wireless communication and computing networks, including scalable topology maintenance, mobility modelling, parallelisation and synchronisation. We explore similarities and differences between the simulations of these networks and simulations of interacting many-particle systems, such as molecular dynamics (MD) simulations. We show how the cell linked-list algorithm which we have adapted from our MD simulations can be used to greatly improve the computational performance of wireless network simulators in the presence of mobility, and illustrate with an example from our simulation studies of worm attacks on mobile wireless adhoc networks.
description: Future Generation Computer Systems, Article in Press
Galactic Geology: Probing Time-Varying Dark Matter Signals with Paleo-Detectors
Creators: name: Baum, Sebastian
name: DeRocco, William
name: Edwards, Thomas D. P.
name: Kalia, Saarik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Paleo-detectors are a proposed experimental technique to search for dark matter by reading out the damage tracks caused by nuclear recoils in small samples of natural minerals. Unlike a conventional real-time direct detection experiment, paleo-detectors have been accumulating these tracks for up to a billion years. These long integration times offer a unique possibility: by reading out paleo-detectors of different ages, one can explore the time-variation of signals on megayear to gigayear timescales. We investigate two examples of dark matter substructure that could give rise to such time-varying signals. First, a dark disk through which the Earth would pass every $\sim$45 Myr, and second, a dark matter subhalo that the Earth encountered during the past gigayear. We demonstrate that paleo-detectors are sensitive to these examples under a wide variety of experimental scenarios, even in the presence of substantial background uncertainties. This paper shows that paleo-detectors may hold the key to unraveling our Galactic history.
description: 26 pages, 16 figures, 2 tables, code available at https://github.com/sbaum90/paleoSens and https://github.com/sbaum90/paleoSpec. Published version
Wheat in the United States
Creators: name: Reitz, L. P.
name: Reitz, L. P.
Publisher: name: Unknown
Year: 1976
Subjects: Crop Production/Industries

description: Excerpts from the report: Wheat is grown commercially in 42 States of the Union. In 1973, 58,800,000 acres were seeded to wheat; of this, 53,869,000 acres were harvested for grain. The average yield was 31.7 bushels per acre, giving a total crop of 1,705,167,000 bushels. A larger acreage was harvested in 1974 (64,459,000) yielding 1,793 million bushels and in 1975 (68,861,000) yielding 2,138 million bushels (preliminary government estimates). These were the largest national wheat crops ever recorded. The acre yield was about twice that generally obtained in the period before 1940. Wheat is grown because it is a good cash grain crop. It may be used for grazing livestock, as a hay crop, or seeded to stabilize the soil and retard erosion. The grain is produced mainly for human food but may be fed successfully to all classes of farm animals. The crop fits well in many rotations and can be used as a companion crop underseeded to legumes and grasses.
Exploring the origin of neutron star magnetic field: magnetic properties of the progenitor OB stars
Creators: name: Petit, V.
name: Wade, G. A.
name: Drissen, L.
name: Montmerle, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Ferrario & Wickramasinghe (2006) explored the hypothesis that the magnetic fields of neutron stars are of fossil origin. In this context, they predicted the field distribution of the progenitor OB stars, finding that 5 per cent of main sequence massive stars should have fields in excess of 1kG. We have carried out sensitive ESPaDOnS spectropolarimetric observations to search for direct evidence of such fields in all massive B- and O-type stars in the Orion Nebula Cluster star-forming region. We have detected unambiguous Stokes V Zeeman signatures in spectra of three out of the eight stars observed (38%). Using a new state-of-the-art Bayesian analysis, we infer the presence of strong (kG), organised magnetic fields in their photospheres. For the remaining five stars, we constrain any dipolar fields in the photosphere to be weaker than about 200G. Statistically, the chance of finding three ~kG fields in a sample of eight OB stars is quite low (less than 1%) if the predictions of Ferrario & Wickramasinghe are correct. This implies that either the magnetic fields of neutron stars are not of fossil origin, that the flux-evolution model of Ferrario & Wickramasinghe is incomplete, or that the ONC has unusual magnetic properties. We are undertaking a study of other young star clusters, in order to better explore these possibilities.
description: 40 Years of Pulsars conference: Millisecond Pulsars, Magnetars and More. McGill University, Montreal, Canada, August 12-17, 2007. 5 pages, 4 figures
Scaling of the von Neumann entropy across a finite temperature phase transition
Creators: name: Popkov, Vladislav
name: Salerno, Mario
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The spectrum of the reduced density matrix and the temperature dependence of the von Neumann entropy (VNE) are analytically obtained for a system of hard core bosons on a complete graph which exhibits a phase transition to a Bose-Einstein condensate at $T=T_c$. It is demonstrated that the VNE undergoes a crossover from purely logarithmic at T=0 to purely linear in block size $n$ behaviour for $T\geq T_{c}$. For intermediate temperatures, VNE is a sum of two contributions which are identified as the classical (Gibbs) and the quantum (due to entanglement) parts of the von Neumann entropy.
description: 4 pages, 2 figures
Periodic solutions of periodically perturbed planar autonomous systems: A topological approach
Creators: name: Kamenskii, Mikhail
name: Makarenkov, Oleg
name: Nistri, Paolo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 34A34; 34C25; 34D10

description: Aim of this paper is to investigate the existence of periodic solutions of a nonlinear planar autonomous system having a limit cycle x_0 of least period T_0>0 when it is perturbed by a small parameter, T_1-periodic, perturbation. In the case when T_0/T_1 is a rational number l/k, with l, k prime numbers, we provide conditions to guarantee, for the parameter perturbation e>0 sufficiently small, the existence of klT_0-periodic solutions x_e of the perturbed system which converge to the trajectory x_1 of the limit cycle as e->0. Moreover, we state conditions under which T=klT_0 is the least period of the periodic solutions x_e. We also suggest a simple criterion which ensures that these conditions are verified. Finally, in the case when T_0/T_1 is an irrational number we show the nonexistence, whenever T>0 and e>0, of T-periodic solutions x_e of the perturbed system converging to x_1. The employed methods are based on the topological degree theory.
Stellar disks of Collisional Ring Galaxies I. New multiband images, Radial intensity and color profiles, and confrontation with N-body simulations
Creators: name: Romano, R.
name: Mayya, Y. D.
name: Vorobyov, E. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new multi-band imaging data in the optical (BVRI and Halpha) and near infrared bands (JHK) of 15 candidate ring galaxies from the sample of Appleton & Marston (1997). We use these data to obtain color composite images, global magnitudes and colors of both the ring galaxy and its companion(s), and radial profiles of intensity and colors. We find that only nine of the observed galaxies have multi-band morphologies expected for the classical collisional scenario of ring formation, indicating the high degree of contamination of the ring galaxy sample by galaxies without a clear ring morphology. The radial intensity profiles, obtained by masking the off-centered nucleus, peak at the position of the ring, with the profiles in the continuum bands broader than that in the Halpha line. The images as well as the radial intensity and color profiles clearly demonstrate the existence of the pre-collisional stellar disk outside the star-forming ring, which is in general bluer than the disk internal to the ring. The stellar disk seems to have retained its size, with the disk outside the ring having a shorter exponential scale length as compared to the values expected in normal spiral galaxies of comparable masses. The rings in our sample of galaxies are found to be located preferentially at around half-way through the stellar disk. The most likely reason for this preference is bias against detecting rings when they are close to the center (they would be confused with the resonant rings), and at the edge of the disk the gas surface density may be below the critical density required for star formation. Most of the observed characteristics point to relatively recent collisions (<80 Myr ago) according to the N-body simulations of Gerber et al. (1996).
description: To appear in AJ issue of September 2008. High resolution color image of Figure 2 and other supplementary images are available at http://www.inaoep.mx/~ydm/rings/
ฐานข้อมูลความหลากหลายทางพันธุกรรมในคนไทยแบบสนิปและซีเอ็นวีฐานข้อมูลความหลากหลายทางพันธุกรรมในคนไทยแบบสนิปและซีเอ็นวี
Creators: name: Anunchai Assawamakin
name: Chumpol Ngamphiw
name: Oranud Praditsap
name: Chanin Linwongse
name: Sissades Tongsima
Publisher: name: Genetics Society of Thailand
Year: 2010
Subjects: SNPs, CNV, Thais, genetic polymorphism

description: 1, 3, Thai Journal of Genetics
Electroweak symmetry breaking in other terms
Creators: name: Dietrich, Dennis D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyse descriptions of electroweak symmetry breaking in terms of ultralocal antisymmetric tensor fields and gauge-singlet geometric variables, respectively; in particular, the Weinberg--Salam model and, ultimately, dynamical electroweak symmetry breaking by technicolour theories with enhanced symmetry groups. Our motivation is to unveil the manifestly gauge invariant structure of the different realisations. We find, for example, parallels to different types of torsion.
description: 15pp
The role of habitat heterogeneity in the community dynamics of an eelgrass-associated assemblage of gammarid amphipods
Creators: name: Miller, Patricia Anne
Publisher: name: University of British Columbia
Year: 2010

description: The role of density of eelgrass shoots in regulating distribution and abundance of gammarid amphipods was investigated. Monthly collections of amphipods were made over a one-year period in a series of treatment plots on Roberts Bank, in southwestern B.C., in which eelgrass (Zostera marina L.) shoots had been thinned to different relative densities. This experiment was originally designed to test the hypothesis that the abundance and diversity of amphipods would be positively related to the density of eelgrass shoots. Due to the rapid recovery of original shoot densities within the plots, however, this hypothesis could not be tested. Consequently, the emphasis of the study was restricted to a consideration of the effect of the disturbance created during removal of shoots on the distribution of amphipods. Collections of amphipods were also made in three areas of different natural densities of Zostera shoots during a three-month period in summer 1984, to assess further the effect of shoot density on the distribution and abundance of amphipods. The role of additional components of habitat heterogeneity, including drift algae and a second species of seagrass, Zostera japonica, in modifying the community dynamics of the amphipods was also studied. No relationship between the density of Zostera shoots and the abundance and diversity of amphipods was found. The amphipod community was dominated by Corophium acherusicum and the distribution of this species, as well as that of the other most frequently collected species, appeared to be regulated by the seasonality of macrophyte biomass. Peak abundances of amphipods occurred in the late summer and autumn when large amounts of drift algae and eelgrass detritus were present at the sediment surface. This decaying plant material is an important source of food for detritivores such as gammarids and its seasonal abundance was reflected in the rapid growth of populations of amphipods. The floating mats of drift algae, such as Ulva sp., also contributed significantly to the carrying capacity of the eelgrass meadow by providing spatial refuges to amphipods which are targets of fish and bird predation. The role of habitat heteogeneity in determining the distribution of the dominant species of amphipods, with reference to competition and predation, was discussed.