cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measurement of the π⁰ electromagnetic transition form factor
Creators: name: Drees, Reena Meijer
Publisher: name: University of British Columbia
Year: 2011

description: We present the result of a measurement of the π⁰ electromagnetic transition form factor in the time-like region of momentum transfer. From a data sample of roughly 100,000 π⁰ → e⁺ e⁻ γ decays, observed in the SINDRUM I magnetic spectrometer at the Paul Scherrer Institute (Switzerland), we measure a value of the form factor slope a = 0.02 ± 0.01 (stat) ± 0.02 (sys). This measurement is consistent with both the results of the recent measurement by CELLO (DESY) in the space-like region, and with the vector meson dominance prediction of a ≈ 0.03.
GEM Cell Line Establishment, Characterization, and Analysis
Creators: name: Chester, Daniel
Publisher: name: Columbia Undergraduate Science Journal
Year: 2013

description: The use of in-vitro cell lines in conjunction with in-vivo mouse models is a common practice in the study of cancer. Culturing cells with the same genotypes as the specific strains of mice being used in studies can be very important and useful in supplementing the research and findings in-vivo. The purpose of this particular study was to develop, characterize, and analyze different cell lines in order to utilize them in conjunction with mice in the lab. We have successfully established two cell lines from two different mouse models. We determined that the two different genetic strains of mice generate two different types of cells when grown in culture that accurately reflect the source strains. The purpose of this project was to adapt a protocol meant for establishing human breast tumors to mouse prostate models, and then to test if the correct cells had been isolated for future use. Western blotting and other testing verified the correct cell type, therefore this project succeeding in developing a method for establishing more cell lines in the future.
description: Columbia Undergraduate Science Journal, Vol 7 (2013): Spring 2013
Gnypeta dentata Klimaszewski & Savard & Pelletier & Webster 2008, sp. nov.
Creators: name: Klimaszewski, Jan
name: Savard, Karine
name: Pelletier, Georges
name: Webster, Reginald
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Gnypeta
Gnypeta dentata

description: 5. Gnypeta dentata Klimaszewski sp. nov. (CANADA: Saskatchewan, Alberta, Northwest Territories ).
description: Published as part of Klimaszewski, Jan, Savard, Karine, Pelletier, Georges & Webster, Reginald, 2008, Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution, pp. 11-84 in ZooKeys 2 (2) on page 23, DOI: 10.3897/zookeys.2.4, http://zenodo.org/record/576410
An AdS/CFT Calculation of Screening in a Hot Wind
Creators: name: Liu, Hong
name: Rajagopal, Krishna
name: Wiedemann, Urs Achim
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: One of the challenges in relating experimental measurements of the suppression in the number of J/ψmesons produced in heavy ion collisions to lattice QCD calculations is that whereas the lattice calculations treat J/ψmesons at rest, in a heavy ion collision a c\bar c pair can have a significant velocity with respect to the hot fluid produced in the collision. The putative J/ψfinds itself in a hot wind. We present the first rigorous non-perturbative calculation of the consequences of a wind velocity v on the screening length L_s for a heavy quark-antiquark pair in hot N=4 supersymmetric QCD. We find L_s(v,T) = f(v)[1-v^2]^{1/4}/πT with f(v) only mildly dependent on v and the wind direction. This L_s(v,T)\sim L_s(0,T)/\sqrtγ velocity scaling, if realized in QCD, provides a significant additional source of J/Ψsuppression at transverse momenta which are high but within experimental reach.
description: 5 pages, 3 figures. v3: Significant additions, including a new figure, giving an illustrative example of the effect of the velocity scaling of the screening length on J/Psi suppression in heavy ion collisions
The Effect of Fasudil on Glioma Cell Migration
Creators: name: Wang, Christine
name: Dovas, Athanassios
name: Amendolara, Benjamin
name: Canoll, Peter
Publisher: name: Columbia Undergraduate Science Journal
Year: 2014

description: Gliomas are tumors arising from glial cells that are highly infiltrative within the brain. Their extensive migratory patterns greatly limit the treatment options and prognoses for patients. It has been shown that glioma cells undergo migration in a unique manner that relies heavily on non-muscle myosin II. Since functionality of non-muscle myosin II requires the phosphorylation of its regulatory light chain by enzymes like Rho-Kinase, we have treated glioma cells with the Rho-Kinase inhibitor, fasudil, and tested its effects. The results indicated that fasudil is a potent inhibitor of migration and also accordingly decreases regulatory light chain phosphorylation in glioma cells. This suggests that fasudil could be a good potentia l candidate for future in vivo studies and contribute to current therapeutic options for the treatment of gliomas. However, residual cell motility and phosphorylation despite treatment with fasudil also suggest that more work must be done to assess the importance of other pathways in glioma cell migration.
description: Columbia Undergraduate Science Journal, Vol 8 (2014): Spring 2014
Studies of oxide desoption from GaAs by diffuse electron scattering and optical reflectivity
Creators: name: Van Buuren, Anthony W.H.
Publisher: name: University of British Columbia
Year: 2010

description: We have determined that the temperature for desorption of gallium oxide from GaAs increases linearly with oxide thickness, for oxide layers between about 6Å and 26Å thick. The temperature for the oxide desorption ranged from 580°C to 630°C. The wafer temperature was determined from the optical band-gap measured from the diffuse reflectivity of the sample, which was polished on the front surface and textured on the back surface. Different thicknesses of oxide layers were created by varying the exposure time of the GaAs wafers to a low pressure oxygen plasma. The oxide thicknesses were determined by XPS analysis. Desorption experiments were carried out in a VG V80H MBE system under a As4 beam equivalent pressure of 1.5 x 10⁻⁵ ton. Measurement of diffuse light scattering using a HeNe laser shows an abrupt and non-reversible increase in the scattered light intensity during the oxide desorption. This suggests the surface is macroscopically roughened due to inhomogeneous desorption of the oxide. The oxide desorption was also studied by monitoring the secondary electrons produced by the high energy electrons from the RHEED gun. After the gallium oxide desorption there is a reversible, order of magnitude, increase in the number of scattered electrons produced by the incoming primary beam. We interpret this result as evidence for some form of microscopic roughening.
Unveiling the oldest and most massive galaxies at very high redshift
Creators: name: Rodighiero, G.
name: Cimatti, A.
name: Franceschini, A.
name: Brusa, M.
name: Fritz, J.
name: Bolzonella, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) This work explores the existence of high redshift massive galaxies unveiled with Spitzer+IRAC, but missed by conventional selection techniques based on optical and near-infrared observations. To this end, we use the multi-wavelength imaging data available for the GOODS-South field, and select a flux-limited sample from the IRAC 3.6um image to m(AB)<23.26. We confine our study to the galaxies undetected by the optical HST+ACS imaging and close to the detection limit of the K-band image (K>23.5 AB). Our selection unveiled 20 galaxies on which we performed a detailed photometric analysis. For each galaxy, we built an SED based on optical-to-8um photometry to estimate the photo-z and to derive the main galaxies physical properties. The majority of the sample sources show degenerate/bimodal solutions for the photometric redshifts (Abridged). These can either be heavily dust-enshrouded (Av~2-4) starbursts at 210^12 Lsun, or massive post-starburst galaxies in the redshift interval 44 which appear to include significant AGN emissions. These sources may be the oldest stellar systems at z~4. These, previously unrecognized, optically obscured objects might provide an important contribution to the massive-end (M>10^11 sun) of the high-z stellar mass function and they would almost double it (Abridged).
description: Accepted for publication in Astronomy and Astrophysics
Review Essay: “Representing Recording Studios of the Past.”
Creators: name: Slaten, Whitney
Publisher: name: Current Musicology
Year: 2011

description: The recording studio, a site that music makers use to represent and produce sonic culture, is not merely a musical place. Recording studios are social, electronic, architectural, acoustic, and creative technologies of representation. Throughout recording processes, music industries seek to mystify the functional status of the studio among consumers of pop music. This encourages alienation between consumers and producers of popular music, rendering the agency of music business interests invisible, inaudible, and transparent. Roben Jones’s Memphis Boys: The Story of American Studios, John Hartley Fox’s King of the Queen City: The Story of King Records, and Andy Bradley and Roger Wood’s House of Hits: The Story of Houston’s Gold Star/Sugarhill Recording Studios present music scholarship with three recording studios that significantly contributed to American popular music. These works successfully document the local and national contexts in which these studios produced, as well as many accounts of individuals who were involved in the studios and specific recording sessions; however, these are books in which the representation of recording studios weighs heavily on celebrations of illustrious music makers and the popular music they produce. Jones and Fox are not as careful in attending to the diverse artistic and technological agencies of architects, carpenters, acousticians, engineers, musicians, producers, and business people in the history of the recording studios as are Bradley and Wood. Works such as these perpetuate readers’ misunderstanding of the complexities involved in recording studio labor and inhibit scholarly analyses of popular music production. Representations of recording studio life comprise a small category of scholarship on popular music.
description: Current Musicology, No 91 (2011): Current Musicology
Maximum Confidence Quantum Measurements
Creators: name: Croke, Sarah
name: Andersson, Erika
name: Barnett, Stephen M.
name: Gilson, Claire R.
name: Jeffers, John
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the problem of discriminating between states of a specified set with maximum confidence. For a set of linearly independent states unambiguous discrimination is possible if we allow for the possibility of an inconclusive result. For linearly dependent sets an analogous measurement is one which allows us to be as confident as possible that when a given state is identified on the basis of the measurement result, it is indeed the correct state.
description: 4 pages, 2 figures
Investigating the role of the Nus G protein in N mediated Anti-termination observed in Escherichia Coli
Creators: name: Gottesman, Max E.
name: Adeniyi, Olamide
name: Washburn, Robert S.
Publisher: name: Columbia Undergraduate Science Journal
Year: 2016

description: In E. coli, NusG is an essential regulator of RNA polymerase. Due to its two domain structure, NusG acts as flexible linker in the anti termination complex which promotes elongation rates by suppressing transcriptional pausing in vitro. However the specific role of NusG in the process of N antitermination is still unclear as anti-termination has been observed in the absence of NusG, in vivo. Here we attempt to resolve this issue by isolating a point mutation in NusG that blocks N antitermination. Doing so will reveal the structural interaction between the Nus G and N protein during phage Lambda infection.
description: Columbia Undergraduate Science Journal, Vol 10 (2016): Spring 2016
Franck-Condon principle for heavy-quark hadron decays
Creators: name: Llanes-Estrada, Felipe J.
name: Cotanch, Stephen R.
name: General, Ignacio G.
name: Wang, Ping
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Franck-Condon principle governing molecular electronic transitions is utilized to study heavy-quark hadron decays. This provides a direct assessment of the wavefunction of the parent hadron if the momentum distribution of the open-flavor decay products is measured. Model-independent results include an experimental distinction between quarkonium and exotica (hybrids, tetraquarks...), an off-plane correlator signature for tetraquarks and a direct probe of the sea quark orbital wavefunction relevant in the discussion of 3S_1 or 3P_0 decay mechanisms.
description: Prepared for the Workshop on Scalar Mesons and Related Topics, Lisbon, 11-16 Feburary 2008
Oscillons and Quasi-breathers in the ϕ^4 Klein-Gordon model
Creators: name: Fodor, Gyula
name: Forgács, Péter
name: Grandclément, Philippe
name: Rácz, István
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Strong numerical evidence is presented for the existence of a continuous family of time-periodic solutions with ``weak'' spatial localization of the spherically symmetric non-linear Klein-Gordon equation in 3+1 dimensions. These solutions are ``weakly'' localized in space in that they have slowly decaying oscillatory tails and can be interpreted as localized standing waves (quasi-breathers). By a detailed analysis of long-lived metastable states (oscillons) formed during the time evolution it is demonstrated that the oscillon states can be quantitatively described by the weakly localized quasi-breathers.It is found that the quasi-breathers and their oscillon counterparts exist for a whole continuum of frequencies.
description: 33 pages, 34 figures
Constraint on $Δg(x)$ at large $x$
Creators: name: Hirai, M.
name: Kumano, S.
name: Saito, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the polarized gluon distribution Δg(x) by a global analysis of current DIS data and the π^0 data from RHIC-Spin experiments. The π^0 data provide a strong constraint on Δg(x), so that its uncertainty is reduced. Furthermore, new DIS data of COMPASS and HERMES play an important role in determining Δg(x) at large x.
description: 4page, 3 eps figures, to appear in the proceedings of DIS 2006, April 20-24, 2006, Tsukuba, Japan
3DLab-Sicilia: un'infrastruttura di ricerca per la promozione e la conservazione di beni culturali
Creators: name: Barbera, R.
name: Licata, L.
Publisher: name: INFN Open Access Repository
Year: 2021
Subjects: Cultural Heritage
Virtual Reality
Muography
Research Infrastructure
Liquid lab

description: Presentazione fatta da Roberto Barbera alla XIIth AIES Conference "Diagnosis, Conservation and Valorization of Cultural Heritage"
Lindstedt Series Solutions of the Fermi-Pasta-Ulam Lattice
Creators: name: Dooling, David C
name: Hammerberg, James E
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Dynamical Systems (math.DS)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We apply the Lindstedt method to the one dimensional Fermi-Pasta-Ulam $β$ lattice to find fully general solutions to the complete set of equations of motion. The pertubative scheme employed uses $ε$ as the expansion parameter, where $ε$ is the coefficient of the quartic coupling between nearest neighbors. We compare our non-secular perturbative solutions to numerical solutions and find striking agreement.
description: 17 pages, 10 figures. To appear in the Journal of Mathematical Physics
PBK models for cardiotoxicity
Creators: name: Roos, Tom
name: Gehring, Ronette
Publisher: name: Zenodo
Year: 2024

description: PBK model files (R) used in the ALTERNATIVE project for doxorubicin (DOX_PBK_2.18.R), amitriptyline (Amitriptyline.R), TBBPA (TBBPA.R) and rotenone (Rotenone.R). Included is a modified version of httk (httkfb2.tar) with added heart and adipose compartments to run the simulations.
Pattern Formation in Quantum Ferrofluids: from Supersolids to Superglasses
Creators: name: Hertkorn, J.
name: Schmidt, J. -N.
name: Guo, M.
name: Böttcher, F.
name: Ng, K. S. H.
name: Graham, S. D.
name: Uerlings, P.
name: Langen, T.
name: Zwierlein, M.
name: Pfau, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Pattern formation is a ubiquitous phenomenon observed in nonlinear and out-of-equilibrium systems. In equilibrium, quantum ferrofluids formed from ultracold atoms were recently shown to spontaneously develop coherent density patterns, manifesting a supersolid. We theoretically investigate the phase diagram of such quantum ferrofluids in oblate trap geometries and find an even wider range of exotic states of matter. Two-dimensional supersolid crystals formed from individual ferrofluid quantum droplets dominate the phase diagram at low densities. For higher densities we find honeycomb and labyrinthine states, as well as a pumpkin phase. We discuss scaling relations which allow us to find these phases for a wide variety of trap geometries, interaction strengths, and atom numbers. Our study illuminates the origin of the various possible patterns of quantum ferrofluids and shows that their occurrence is generic of strongly dipolar interacting systems stabilized by beyond mean-field effects.
description: 16 pages, 5+2 figures
Periodic waves of a discrete higher order nonlinear Schroedinger equation
Creators: name: Conte, Robert
name: Chow, Kwok-wing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The Hirota equation is a higher order extension of the nonlinear Schroedinger equation by incorporating third order dispersion and one form of self steepening effect. New periodic waves for the discrete Hirota equation are given in terms of elliptic functions. The continuum limit converges to the analogous result for the continuous Hirota equation, while the long wave limit of these discrete periodic patterns reproduces the known result of the integrable Ablowitz-Ladik system.
description: 10 pages, 0 figure, to appear, Communications in theoretical physics
Stuckelberg Axions and the Effective Action of Anomalous Abelian Models 2. A SU(3)_C x SU(2)_W x U(1)_Y x U(1)_B model and its signature at the LHC
Creators: name: Coriano, Claudio
name: Irges, Nikos
name: Morelli, Simone
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We elaborate on an extension of the Standard Model with a gauge structure enlarged by a single anomalous U(1), where the presence of a Wess-Zumino term is motivated by the Green-Schwarz mechanism of string theory. The additional gauge interaction is anomalous and requires an axion for anomaly cancelation. The pseudoscalar implements the Stückelberg mechanism and undergoes mixing with the standard Higgs sector to render the additional U(1) massive. We consider a 2-Higgs doublet model. We show that the anomalous effective vertices involving neutral currents are potentially observable. We clarify their role in the case of simple processes such as $Z^*\to γγ$, which are at variance with respect to the Standard Model. A brief discussion of the implications of these studies for the LHC is included.
description: 50 pages, 16 figures, replaced with revised final version
USE OF ZAKAT LOGO IN OPTIMIZING CORPORATE ZAKAT COLLECTION IN MALAYSIA TOWARDS SHARED PROSPERITY VISION 2030
Creators: name: AZMAN AB RAHMAN
name: AFAF SUKARI
name: SYED NAJIB SYED OMAR
name: SETIYAWAN GUNARDI
Publisher: name: Zenodo
Year: 2023
Subjects: Zakat Logo, Optimized, Corporate Zakat, Shared Prosperity Vision 2030.

description: Abstract

Shared Prosperity Vision 2030 (WKB 2030) sets out several key objectives including addressing the economic gap between communities. It is to improve the living standards of the community, especially the poor asnaf. One of the proactive efforts made by the Zakat Institution in the state of Kedah is to introduce the zakat logo. This logo is awarded to corporate companies that pay zakat. It aims to optimize the collection rate of corporate zakat so that more zakat is distributed. Therefore, this article aims to discuss the concept of the use of zakat logo in Malaysia besides studying the use of zakat logo introduced by the Lembaga Zakat Negeri Kedah (LZNK) and Pusat Pungutan Zakat Majlis Agama Islam Wilayah Persekutuan (PPZ MAIWP). This qualitative study uses documentation and interview methods in the data collection process. The results of the study found that the provision of zakat logo to corporate companies has the potential to increase zakat collection. Further studies on the law to coordinate the procedure for the use of zakat logos throughout Malaysia can be conducted in the interest of zakat institutions, zakat payers and asnaf towards achieving the objectives of Shared Prosperity Vision 2030.
David Janssen and Edward Whitelock. Apocalypse Jukebox: The End of the the World in American Popular Music
Creators: name: Gutkin, David
Publisher: name: Current Musicology
Year: 2011

description: While any attempt to characterize a nation and “a people” is bound to expire in dubious generalization, claims about the essence of the United States and constitution of the “American character” have often been marked by especially outlandish and totalizing rhetoric-by American and non-American writers alike, both affirmatively and critically. j One example is Jean Baudrillard’s 1986 book America. Poised as the postmodern successor to Alexis de Tocqueville, Baudrillard, perceiving American culture simultaneously as pre-civilized (an old trope) and as the paradigm of hypermodern simulacral “spectrality,” characterizes the nation as both “the only remaining primitive society” and as “a giant hologram.”2 If representations of the United States from the last half-century are inflected by the post-World War II phase of American exceptionalism, this has affected not only imperial apologists and vulgar nationalists but even, residually, writers on the left, like Baudrillard. More generally, the United States has always been a strongly symbolic nation, whether imagined as the singular beacon of democracy or as the paradoxical no-place/no-face of late capitalism. For this reason, critical studies of the American mythos are important, and, as Greil Marcus realized some decades ago, popular music serves as a good lens through which to view the agglomerated fragments of”America.”3 Clearly indebted to Marcus, David Janssen and Edward Whitelock, professors of English at Gordon College and authors of Apocalypse Jukebox: The End of the World in American Popular Music, take as their entry point into the American imagination a perceived deep relationship between rock and apocalyptic thought. Although forsaking Baudrillard’s shimmering, overtly hyperbolic style, Jannsen and Whitelock nevertheless exhibit a more muted version of his tendency to paint American culture in overly broad brush-strokes. This is seen in the book’s thesis of sorts, found in the authors’ introduction. But what does it mean to speak of a “permanent” part of an ”American character”? From the outset it is unclear whether Janssen and Whitelock are attempting to complicate and deconstruct the idea of the ”American character” or simply reify it. If this thesis raises eyebrows, it does, at least, gesture toward answering a primary question about the book: Why apocalypse … now? By positing the “permanence” of apocalyptic thought in American culture, the authors would seem to foreclose the question of relevance. I will return to questions of the book’s historiographic specificity in my conclusion.
description: Current Musicology, No 91 (2011): Current Musicology
Magnetic susceptibility of quark matter within Fermi-liquid theory
Creators: name: Tatsumi, T.
name: Sato, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Possibility of spontaneous magnetization in QCD and magnetic properties of quark matter is discussed by evaluating the magnetic susceptibility within Fermi-liquid theory. The screening effects for gluons are taken into account to figure out the specific properties of the magnetic transition in gauge theories. It is shown that the static screening effect in terms of the Debye mass does not necessarily work against the magnetic instability; it promotes the instability, depending on the coupling constant and the number of flavors.
description: 10 pages, 2 figures
Deborah Pacini-Hernandez. Oye Como Va! Hybridity and Identity in Latino Popular Music
Creators: name: Calle, Simón
Publisher: name: Current Musicology
Year: 2011

description: Despite the fact that the number of Latin American immigrants and persons of Latin decent in the United States has increased significantly in the last two decades, mainstream mass media and academia have often neglected the contributions of these communities to US popular culture, and especially to music. However, this trend seems to be changing in the past few years with the production of documentaries such as Latin Music USA (aired in 2009 on PBS), and the increasing publication of academic books that focus on specific music genres performed by Latinos (eg. Ragland 2009; Rivera, et al. 2009; Washburne 2008). With Oye Como Va!, Deborah Pacini-Hernandez contributes to the literature on Latino music and culture by blending sophisticated and comprehensive socio-cultural analysis of several music genres performed by Latinos such as rock, salsa, meregue, reggaeton, hiphop, and cumbia, along with basic histories of the genres and a tracing of their multiple interconnections. As an anthropologist, Pacini-Hernandez’s is primarily concerned with the question of Latino identity formation through popular music performance, recording, marketing, and reception. Since most of this music emerge from the crossroads of transnational flows of music and people from different nations in the Caribbean and the Americas, she provides a comparative and connective history of national and transnational music genres and their transformation in relation to cultural, social, economical, and political processes primarily within the United States, and also the Americas. Thus, the book’s main interest groups would be those within academia, especially anthropologist, ethnomusicologist, and cultural studies scholars, interested in American and Latino Studies, and those who study mass-mediated popular music in the United States; yet, it is accessible for the general reader.
description: Current Musicology, No 91 (2011): Current Musicology
Gnypeta groenlandica Lohse 1989
Creators: name: Klimaszewski, Jan
name: Savard, Karine
name: Pelletier, Georges
name: Webster, Reginald
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Gnypeta
Gnypeta groenlandica

description: 6. Gnypeta groenlandica Lohse 1989: 58 (CANADA: Manitoba, Northwest Territories, Nunavut; UNITED STATES: Alaska; GREENLAND).
description: Published as part of Klimaszewski, Jan, Savard, Karine, Pelletier, Georges & Webster, Reginald, 2008, Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution, pp. 11-84 in ZooKeys 2 (2) on page 23, DOI: 10.3897/zookeys.2.4, http://zenodo.org/record/576410
description: {"references": ["Lohse GA (1989 a) Staphylinidae II (Hypocyphtinae und Aleocharinae). In: Lohse GA, Lucht WH (Ed). Die Kafer Mitteleuropas. Band 12. Supplementband mit Katalogteil. Goecke & Evers, Krefeld."]}
Parametric resonance for antineutrino conversions using LSND best-fit results with a 3+1 flavor scheme
Creators: name: Linder, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An analytical solution to a parametric resonance effect for antineutrinos in a 3+1 flavor (active+sterile) scheme using multiple non-adiabatic density shifts is presented. We derive the conditions for a full flavor conversion for antineutrino oscillations $\barν_α\to \barν_s$ $(α=e,μ,τ)$ under the assumption that LSND best-fits for the mixing parameters are valid in a short-baseline accelerator experiment. We show that the parametric resonance effect can be exploited to increase the effective antineutrino oscillation length by a factor of 10-40, thus sustaining a high oscillation probability for a much longer period of time than in the vacuum scenario. We propose a realistic experimental setup that could probe for this effect which leaves a signature in terms of a specific oscillation probability profile. Moreover, since the parametric resonance effect is valid in any 2 or 1+1 flavor approximation, our results could be suggestive for future short-baseline accelerator neutrino detection experiments.
description: 6 pages, 4 figures
Polynomial-time Matrix-based Method of Determining Subset Sum Solutions
Creators: name: Alston, Aubrey
Publisher: name: Columbia Undergraduate Science Journal
Year: 2015

description: The subset sum problem is a well-known member of the NP- complete complexity class: given a set of integers A and some constant c, is there some subset of A which sums to c? There have been no known algorithms or methods to solve the value-unbounded, general-case subset sum problem in polynomial time. A naive algorithm performs in exponential time by cycling through the possible subsets of A until it has either seen all subsets or found one that sums to c. A common pseudo-polynomial algorithm employs a dynamic programming method whose complexity is polynomial with respect to the length of the set and the range of the inputs,O(n(M-N)), where n is the length of the set and M-N is the range of inputs; however, this solution is not truly polynomial, as it is polynomial with respect to M-N, which is exponential in its number of bits. Approximate algorithms exist which can be modified to find exact solutions; however, they too degrade to being exponential in the number of bits required to represent elements in the set. In contrast to pre-existing algorithms, the method described here does not concern itself with the various subsets that exist within the input set, but rather searches the solution space of a set of linear constraints when applied to an input set to deduce if a solution can exist; this method is a strategy which may be employed to find solutions satisfying the constraints of the subset sum problem in time polynomial with respect only to the length of the input, having general- case applicability on the basis of universally occurring properties in sets satisfying the problem.
description: Columbia Undergraduate Science Journal, Vol 9 (2015): Spring 2015
Dispersive chiral approach to Meson-meson dynamics: Spectroscopy results for light scalars and precision studies
Creators: name: Pelaez, J. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dispersive approaches provide model independent description of meson-meson scattering. We first review here the use of dispersion relations to obtain a model independent unitarization of Chiral Perturbation Theory amplitudes, that establish the existence of light scalar mesons and whose leading 1/N_c behavior suggest they ahve a non q-qbar dominant component. We also review the forward dispersion relation checks on conflicting experimental data and the resulting very precise pion-pion scattering scattering amplitudes.
description: 8 pages. Invited Plenary talk at the Conference ``Quark Confinement and the Hadron SpectrumVII''. 2-7th Sept. 2006. Ponta Delgada, Azores Islands. Portugal
Classification of Neocortical Neurons Using Affinity Propagation
Creators: name: Ghani, Naureen
name: Yuste, Rafael
Publisher: name: Columbia Undergraduate Science Journal
Year: 2014

description: Determining the circuitry of the neocortex requires an understanding of its components, which in turn necessitates a classification scheme of neocortical neurons. The neocortex consists primarily of excitatory pyramidal neurons (~80% of neocortical neurons) and inhibitory interneurons (~20% of neocortical neurons). Neocortical interneurons are ideally positioned to control circuit dynamics. GABAergic interneurons, in particular, largely contribute to the vast morphological and physiological variability of the cortex. However, much is still not known regarding these interneurons. Here we use unsupervised learning methods, such as PCA followed by k-means analysis, to create quantitative and unbiased classification schemes. We explored the use of affinity propagation, a novel exemplar-based method of cluster analysis, to quantitatively classify a diverse set of 337 neocortical interneurons. Each neuron was characterized by whole- cell recordings done by patch-clamping and complete 3D anatomical reconstructions. It was revealed that each interneuron subtype is characterized by a unique set of morphological and electrophysiological features that allowed for specialized function within the neocortical circuit. Affinity propagation may then be used to classify neurons, the first step to reverse engineer a neocortical circuit.
description: Columbia Undergraduate Science Journal, Vol 8 (2014): Spring 2014
Australian Square Kilometre Array Pathfinder: I. System Description
Creators: name: Hotan, A. W.
name: Bunton, J. D.
name: Chippendale, A. P.
name: Whiting, M.
name: Tuthill, J.
name: Moss, V. A.
name: McConnell, D.
name: Amy, S. W.
name: Huynh, M. T.
name: Allison, J. R.
name: Anderson, C. S.
name: Bannister, K. W.
name: Bastholm, E.
name: Beresford, R.
name: Bock, D. C. -J.
name: Bolton, R.
name: Chapman, J. M.
name: Chow, K.
name: Collier, J. D.
name: Cooray, F. R.
name: Cornwell, T. J.
name: Diamond, P. J.
name: Edwards, P. G.
name: Feain, I. J.
name: Franzen, T. M. O.
name: George, D.
name: Gupta, N.
name: Hampson, G. A.
name: Harvey-Smith, L.
name: Hayman, D. B.
name: Heywood, I.
name: Jacka, C.
name: Jackson, C. A.
name: Jackson, S.
name: Jeganathan, K.
name: Johnston, S.
name: Kesteven, M.
name: Kleiner, D.
name: Koribalski, B. S.
name: Lee-Waddell, K.
name: Lenc, E.
name: Lensson, E. S.
name: Mackay, S.
name: Mahony, E. K.
name: McClure-Griffiths, N. M.
name: McConigley, R.
name: Mirtschin, P.
name: Ng, A. K.
name: Norris, R. P.
name: Pearce, S. E.
name: Phillips, C.
name: Pilawa, M. A.
name: Raja, W.
name: Reynolds, J. E.
name: Roberts, P.
name: Roxby, D. N.
name: Sadler, E. M.
name: Shields, M.
name: Schinckel, A. E. T.
name: Serra, P.
name: Shaw, R. D.
name: Sweetnam, T.
name: Troup, E. R.
name: Tzioumis, A.
name: Voronkov, M. A.
name: Westmeier, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In this paper we describe the system design and capabilities of the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope at the conclusion of its construction project and commencement of science operations. ASKAP is one of the first radio telescopes to deploy phased array feed (PAF) technology on a large scale, giving it an instantaneous field of view that covers 31 square degrees at 800 MHz. As a two-dimensional array of 36x12m antennas, with baselines ranging from 22m to 6km, ASKAP also has excellent snapshot imaging capability and 10 arcsecond resolution. This, combined with 288 MHz of instantaneous bandwidth and a unique third axis of rotation on each antenna, gives ASKAP the capability to create high dynamic range images of large sky areas very quickly. It is an excellent telescope for surveys between 700 MHz and 1800 MHz and is expected to facilitate great advances in our understanding of galaxy formation, cosmology and radio transients while opening new parameter space for discovery of the unknown.
description: 38 pages, 24 figures, accepted for publication in PASA
Projeto Integridade GRU - O QUE O VEREADOR ESTÁ FAZENDO?
Creators: name: Silva, Altieres De Oliveira
name: Knoerr, Viviane Séllos
Publisher: name: Zenodo
Year: 2019
Subjects: Câmara Municipal guarulhense
vereadores
PORTAL DA TRANSFERÊNCIA
Guarulhos
governança

description: O poder legislativo do município da cidade Guarulhense é exercido pela câmara municipal, composta por 34 vereadores eleitos democraticamente. Uma pesquisa realizada pelo Tribunal de Contas do Estado de São Paulo -, mapeou os gastos públicos de todas as câmaras paulistas. Infelizmente, a câmara municipal guarulhense ficou entre as mais caras do Brasil, com um custo médio de R$ 97 milhões por ano (JORNAL DA BAND, 2019).
Transport efficiency of biofunctionalized magnetic particles tailored by surfactant concentration
Creators: name: Reginka, Meike
name: Hoang, Hai
name: Efendi, Özge
name: Merkel, Maximilan
name: Huhnstock, Rico
name: Holzinger, Dennis
name: Dingel, Kristina
name: Sick, Bernhard
name: Bertinetti, Daniela
name: Herberg, Friedrich
name: Ehresmann, Arno
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Controlled transport of surface functionalized magnetic beads in a liquid medium is a central requirement for the handling of captured biomolecular targets in microfluidic lab-on-chip biosensors. Here, the influence of the physiological liquid medium on the transport characteristics of functionalized magnetic particles and on the functionality of the coupled protein is studied. These aspects are theoretically modeled and experimentally investigated for prototype superparamagnetic beads, surface functionalized with green fluorescent protein immersed in buffer solution with different concentrations of a surfactant. The model reports on the tunability of the steady-state particle substrate separation distance to prevent their surface sticking via the choice of surfactant concentration. Experimental and theoretical average velocities are discussed for a ratchet like particle motion induced by a dynamic external field superposed on a static locally varying magnetic field landscape. The developed model and experiment may serve as a basis for quantitative forecasts on the functionality of magnetic particle transport based lab-on-chip devices.
Texts (traditional houses, village meetings and justice, chiefs, funerals)
Creators: name: Agodio, Olivier
name: Emil, Serikpa
name: Sande, Hannah Leigh
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2016
Subjects: subject: dic
subject: Guébie language

description: Present: Olivier Agodio (translating to French), Emma Woolf, Serikpa Emil, Hannah Sande
A reconnaissance study for tracing and ordering new mineralisation zones using integrated remote sensing, GIS, and aeromagnetic techniques, west Allaqi-Heiani-Suture,Egypt
Creators: name: Abd-AlHai, Mahmoud Mohamed
name: Araffa, Sultan Awad Sultan
name: Mekkawi, Mahmoud Mohamed
name: ElGalladi, Ahmed Abdel-Moniem
Publisher: name: Taylor & Francis
Year: 2022
Subjects: Biochemistry
Space Science
Medicine
Biotechnology
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Astronomical and Space Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: Reducing expenses is a critical aspect of natural resource explorations, especially in the reconnaissance stage. Accordingly, GIS algorithms using the free remote sensing data were used to rank the probable mineralised zones before any future implementations of the high-cost drilling and/or detailed geophysical programmes. Geological and tectonic settings, and being a historical mineral resource were motivations to choose the Allaqi-Heiani Suture (AHS), Upper Egypt, as a study area. Remote sensing data were processed for tracing the probably mineralised alteration zones, determining fractures and dominating structural systems, and mapping different geological units. Various alteration minerals including hydroxyls–carbonates, ferrous and ferric iron oxides were detected over different rock units using band ratio (BR) and Crosta techniques. Different geological units were distinguished using false colour composite (FCC) images. Moreover, an intense fractured system, demonstrating the area, was revealed by tracing lineaments using informative, spatially enhanced remote-sensed images. Fractures within the altered rocks represent 35% of the total fracturing system in the AHS to indicate a structural system controlling mineralisation occurrences. The processing of magnetic data suggested a deep/buried nature of these remotely detected lineaments/structures. Reduced to pole (RTP) and tilt derivative (TDR) maps detected the buried magnetic sources, whereas zero contours of TDR, Euler deconvolution, analytic signal and source parameter imaging (SPI) techniques traced buried contacts/structures and estimated their depths. A GIS strategy depending on the intensity of the fracturing system and the presence of more than one type of alteration was applied to potential-rank the prospective mineralised occurrences over AHS. The correlation between ranked zones with the old/known mines showed encouraging evaluation.
Studies of atomic hydrogen spin exchange collisions at 1 K and below
Creators: name: Hayden, Michael Edward
Publisher: name: University of British Columbia
Year: 2008

description: Spin-exchange interactions during collisions between hydrogen (H) atoms cause the ΔF =1, ΔmF = 0 hyperfine transition of the H atom to be broadened and shifted from its unperturbed frequency. A recent theory suggests that hyperfine interactions during these collisions lead to frequency shifts in an oscillating H maser which depend in a non-linear way upon the atomic density. These non-adiabatic contributions are of considerable technological concern as they may limit the ultimate frequency stability of H masers operating at cryogenic temperatures. In the first of two experiments described here, we examine the influence of H-H spin-exchange collisions on the oscillation frequency of a H maser operating at 0.5 K. The results of this study are consistent with the theoretical predictions. The second study involves several experiments with mixtures of H and deuterium (D) atoms at cryogenic temperatures. It makes use of the observation that for comparable H and D densities, the spin-exchange broadening of the ΔF = 1, ΔmF = 0 hyperfine transition of the H atom is dominated by H-D collisions. We have used hyperfine magnetic resonance techniques on this transition to study interactions between H and D atoms confined by liquid ⁴He (l-⁴He) walls at 1 K and zero magnetic field. The resonance signal intensity gives a measure of the H density iii the mixture while the broadening of the transition gives a simultaneous measure of the D density. Measurements are made of several spin-exchange and recombination cross sections. An improved measurement of the energy required to force a D atom into l-⁴He is made. These results also set a lower bound for the effective mass of a D quasiparticle in l-⁴He.
Quantum Teleportation with Continuous Variables: a survey
Creators: name: Pirandola, Stefano
name: Mancini, Stefano
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Very recently we have witnessed a new development of quantum information, the so-called continuous variable (CV) quantum information theory. Such a further development has been mainly due to the experimental and theoretical advantages offered by CV systems, i.e., quantum systems described by a set of observables, like position and momentum, which have a continuous spectrum of eigenvalues. According to this novel trend, quantum information protocols like quantum teleportation have been suitably extended to the CV framework. Here, we briefly review some mathematical tools relative to CV systems and we consequently develop the concepts of quantum entanglement and teleportation in the CV framework, by analogy with the qubit-based approach. Some connections between teleportation fidelity and entanglement properties of the underlying quantum channel are inspected. Next, we face the study of CV quantum teleportation networks where more users share a multipartite state and an arbitrary pair of them performs quantum teleportation. In this context, we show alternative protocols and we investigate the optimal strategy that maximizes the performance of the network.
description: Review article. 26 pages, 4 figures
Direct Imaging of Exoplanets with Project 1640
Creators: name: Lewis, Briley
name: Oppenheimer, Rebecca
Publisher: name: Columbia Undergraduate Science Journal
Year: 2017

description: Project 1640 is a suite of instrumentation and software focused on high-contrast imaging of exoplanets, probing the parameter space of companion size > 1MJ and distance 5-50 AU around the host stars. The instrument consists of an apodized Lyot coronagraph, with a Mach-Zender interferometer and an integral field spectrograph, forming data cubes of dimensions right ascension, declination, and wavelength. P1640 is operated at Palomar Observatory in Southern California, in conjunction with their PALM-3000 adaptive optics system. Data reduction models out remaining speckle noise using principle component analysis and produces a residual cube, which can then be manually inspected for possible companions. For this summer project, data reduction using the Karhunen-Lo ́eve Image Projection (KLIP) algorithm was completed on many of the survey stars and inspected, in an effort to search for more candidates. At this time, two possible candidates have been found, and are awaiting further confirmation.
description: Columbia Undergraduate Science Journal, Vol 11 (2017): Spring 2017
Generation of quasi-monoenergetic positron beams in chirped laser fields
Creators: name: Tang, Suo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: High energy photons can decay to electron-positron pairs via the nonlinear Breit-Wheeler process when colliding with an intense laser pulse. The energy spectrum of the produced particles is broadened because of the variation of their effective mass in the course of the laser pulse. Applying a suitable chirp to the laser pulse can narrow the energy distribution of the generated electrons and positrons. We present a scenario where a high-energy electron beam is collided with a chirped laser pulse to generate a beam of quasi-monoenergetic $γ$-photons, which then decay in a second chirped, UV pulse to produce a quasi-monoenergetic source of high-energy electrons and positrons.