cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Engaging the Tools of Resistance: Enslaved Africans' Tactics of Collective and Individual Consumption in Food, Medicine, and Clothing in the Great Dismal Swamp
Creators: name: Goode, Cynthia
Publisher: name: American University
Year: 2023

description: The Great Dismal Swamp, located in Virginia and North Carolina, was a landscape of resistance for enslaved Africans who fled to its interior maronnage settlements. But how did the enslaved workers who were forced to participate in the slavery-based capitalist economy find avenues to perform acts of resistance within these circumstances, and were they able to interact with or facilitate maroons and refugees escaping through the swamp? This research questions the role of material culture consumption as a form of resistance in the Great Dismal Swamp by exploring the historical and archaeological records of Dismal Town, Site 44SK70, and Jericho Ditch Work Camp, Site 44SK506, where enslaved men and women lived and worked during the late-eighteenth and early-nineteenth centuries. The Dismal Swamp Company (1763-1814), headquartered at Dismal Town plantation along the Washington Ditch, was one of the first corporations to exploit the swamp’s natural resources. Its successor was the Dismal Swamp Land Company (1810-1871), headquartered at the sawmills at Jericho Town, with work camps spread throughout the swamp including the work camp on the Jericho Ditch. Opportunities for and tactics of resistance changed as the company changed its name and transitioned from a slave-owning, plantation-style labor system of agricultural production to a more industrialized, slave-leasing, task-based system of lumbering and shingle production. Because material culture plays a role in power-laden social relationships, the consumption and use of materials culture can constitute resistance on both an individual and collective level. This resistive consumption can take many forms, self-determination and persistence in expressions of cultural identity, or the ability to legally purchase freedom for one’s self or family with saved wages, or even the ability to supply and facilitate fugitives within the GDS through redistribution in an internal economy. This research will prove that resistance can be a pervasive, persistent, and hidden range of practices and tactics used by people in their everyday lives through the seemingly mundane choices of how to cook and serve food, prescribe medical treatments, and acquire clothing and personal items.
Arakelian 564: An XMM-Newton view
Creators: name: Vignali, C.
name: Brandt, W. N.
name: Boller, Th.
name: Fabian, A. C.
name: Vaughan, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on two XMM-Newton observations of the bright narrow-line Seyfert 1 galaxy Ark 564 taken one year apart (2000 June and 2001 June). The 0.6-10 keV continuum is well described by a soft blackbody component (kT~140-150 eV) plus a steep power law (Gamma~2.50-2.55). No significant spectral changes are observed between the two observations, although the X-ray flux in the second observation is ~40-50 per cent lower. In both observations we detect a significant absorption edge at a rest-frame energy of ~0.73 keV, corresponding to OVII. The presence of the absorption feature is confirmed by a simultaneous Chandra grating observation in 2000 June, although the best-fitting edge threshold is at a slightly lower energy in the Chandra data, possibly because of a different parameterisation of the underlying X-ray continuum. We find tentative evidence for a broad iron emission line in the 2000 June observation. The results from an analysis of the power spectral density (PSD) function are also presented. The present XMM-Newton data support the idea that the PSD shows two breaks, although the location of the high-frequency break requires further constraints.
description: 8 pages, 7 figures, accepted for publication in MNRAS
Spiky CMB distortions from primordial bubbles
Creators: name: Deng, Heling
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Primordial bubbles that possibly nucleate through quantum tunneling during inflation in a multidimensional potential might have left some relic detectable at the present time. These bubbles turn into black holes during the radiation era, which may account for the LIGO black holes, supermassive black holes, and may play an important role in dark matter. Typically, these black holes are surrounded by an energy deficit in the form of a spherical sound wave packet propagating outwards. In this work we study how this perturbation of the cosmic plasma dissipates before the time of recombination, leading to spectral distortions in CMB. We find that there may exist some rare regions on the last scattering surface containing huge black holes, which have produced potentially detectable point-like signals of $μ$-type distortions.
description: 21 pages, 3 figures
Testing the $\mathrm{SU}(2)$ lattice Hamiltonian built from $S_3$ partitionings
Creators: name: Garofalo, Marco
name: Hartung, Tobias
name: Jakobs, Timo
name: Jansen, Karl
name: Ostmeyer, Johann
name: Rolfes, Dominik
name: Romiti, Simone
name: Urbach, Carsten
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: derivative, Lie
Hamiltonian
quantum device
unitarity
site
sphere
lattice field theory
computer
lattice

description: We test a possible digitization of $\mathrm{SU}(2)$ lattice gauge theories based on partitionings of the sphere $S_3$. In our construction the link operators are unitary and diagonal, with eigenvalues determined by the vertices of the partitioning. The canonical momenta are finite difference operators approximating the Lie derivatives on the manifold. In this formalism we implement the standard Wilson Hamiltonian. We show results for a 2-site Schwinger-type model in 1D and a single-plaquette system in 2D. Our calculations are performed on a classical computer, though in principle they can be implemented also on a quantum device.
Generalised zeta-function regularization for scalar one-loop effective action
Creators: name: Cognola, Guido
name: Zerbini, Sergio
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The one-loop effective action for a scalar field defined in the ultrastatic space-time where non standard logarithmic terms in the asymptotic heat-kernel expansion are present, is investigated by a generalisation of zeta-function regularisation. It is shown that additional divergences may appear at one-loop level. The one-loop renormalisability of the model is discussed and the one-loop renormalisation group equations are derived.
description: 3 pages, contribution to MG10, Rio de Janeiro
Engaging the Tools of Resistance: Enslaved Africans' Tactics of Collective and Individual Consumption in Food, Medicine, and Clothing in the Great Dismal Swamp
Creators: name: Goode, Cynthia
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 4301
subject: Archaeology
classificationCode: 4303
subject: Historical studies
classificationCode: 4401
subject: Anthropology
subject: FOS: Sociology

description: The Great Dismal Swamp, located in Virginia and North Carolina, was a landscape of resistance for enslaved Africans who fled to its interior maronnage settlements. But how did the enslaved workers who were forced to participate in the slavery-based capitalist economy find avenues to perform acts of resistance within these circumstances, and were they able to interact with or facilitate maroons and refugees escaping through the swamp? This research questions the role of material culture consumption as a form of resistance in the Great Dismal Swamp by exploring the historical and archaeological records of Dismal Town, Site 44SK70, and Jericho Ditch Work Camp, Site 44SK506, where enslaved men and women lived and worked during the late-eighteenth and early-nineteenth centuries. The Dismal Swamp Company (1763-1814), headquartered at Dismal Town plantation along the Washington Ditch, was one of the first corporations to exploit the swamp’s natural resources. Its successor was the Dismal Swamp Land Company (1810-1871), headquartered at the sawmills at Jericho Town, with work camps spread throughout the swamp including the work camp on the Jericho Ditch. Opportunities for and tactics of resistance changed as the company changed its name and transitioned from a slave-owning, plantation-style labor system of agricultural production to a more industrialized, slave-leasing, task-based system of lumbering and shingle production. Because material culture plays a role in power-laden social relationships, the consumption and use of materials culture can constitute resistance on both an individual and collective level. This resistive consumption can take many forms, self-determination and persistence in expressions of cultural identity, or the ability to legally purchase freedom for one’s self or family with saved wages, or even the ability to supply and facilitate fugitives within the GDS through redistribution in an internal economy. This research will prove that resistance can be a pervasive, persistent, and hidden range of practices and tactics used by people in their everyday lives through the seemingly mundane choices of how to cook and serve food, prescribe medical treatments, and acquire clothing and personal items.
Low-Frequency Noise is underestimated by dBA. After 80 years, an LFN descriptor for rating annoyance is necessary
Creators: name: W.A. Montano
Publisher: name: figshare
Year: 2020
Subjects: subject: 91301 Acoustics and Noise Control (excl. Architectural Acoustics)
subject: FOS: Mechanical engineering

description: The dBA was defined in 1936 to measure low levels up to 55 dB; the oldest sound level meters included two panel switches: one for sound pressure and the other for frequency weighting. It became easier to measure just the dBA in late 60´s, but this was not the best decision since low-frequency noise and infrasound are underestimated by dBA weighting. WHO recommends the use of dBC-dBA and suggests that when this difference is greater than 10 dB, an analysis should be applied. For more than 80 years, the common worldwide laws against noise have forced us ‘to feel the noise in dBA levels,’ which is not true because our body ‘senses’ the whole flat frequency bandwidth. Few countries have legislation on how to assess ILFN levels. This Article discusses the necessity to create a paradigm for LFN measurement (based on ISO 1996), in order to ‘retire’ the dBA noise descriptor.
Double-peak specific heat feature in frustrated antiferromagnetic clusters
Creators: name: Syromyatnikov, A. V.
name: Maleyev, S. V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the nature of the double-peak specific heat structure in kagome clusters. That containing 12 spins is considered thoroughly by numerical diagonalization. Simple models are proposed revealing the low-$T$ peak nature at $T_l
description: 7 pages, 3 figures
Identification of Somatic Driver Mutations in a Tpl2-/- Model of Cutaneous Squamous Cell Carcinoma
Creators: name: Dempsey, Bretton
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 31
subject: Biological sciences
subject: FOS: Biological sciences

description: Cutaneous squamous cell carcinoma (cSCC), originating from epidermal keratinocytes, is the second-most common form of non-melanoma skin cancer. Mainly caused by cumulative ultraviolet exposure, a recent surge in prevalence has been observed. Coupled with high rates of metastasis, this affliction poses a serious public health threat. Tumor Progression Locus 2 (Tpl2), also known as Cot or MAP3K8, is a serine/threonine kinase in the mitogen-activated protein kinase (MAPK) signal transduction cascade. Implicated in a variety of cell growth and inflammation pathways, Tpl2 activity has been identified in numerous cancers including breast, endometrial, thymomas, lymphomas, lung, Hodgkin’s disease, and nasopharyngeal carcinoma. Previously thought to be solely an oncogene, Dr. DeCicco-Skinner’s laboratory has established a tumor suppressor role for Tpl2 in the context of cSCC. The recent pharmaceutical interest in Tpl2 inhibition as a treatment for rheumatoid arthritis or in chemotherapy displays the need for more research on this gene. The purpose of this thesis was to analyze the underlying genetic mechanisms behind increased cSCC susceptibility in Tpl2-/- mice. This was accomplished through the sequencing and mutational analysis of H-ras, Tp53, and EGFR from Tpl2-/- and wildtype tissue and tumor samples.
Precision and consistency of astrocombs
Creators: name: Milaković, Dinko
name: Pasquini, Luca
name: Webb, John K
name: Curto, Gaspare Lo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Astrocombs are ideal spectrograph calibrators whose limiting precision can be derived using a second, independent, astrocomb system. We therefore analyse data from two astrocombs (one 18 GHz and one 25 GHz) used simultaneously on the HARPS spectrograph at the European Southern Observatory. The first aim of this paper is to quantify the wavelength repeatability achieved by a particular astrocomb. The second aim is to measure wavelength calibration consistency between independent astrocombs, that is to place limits or measure any possible zero-point offsets. We present three main findings, each with important implications for exoplanet detection, varying fundamental constant and redshift drift measurements. Firstly, wavelength calibration procedures are important: using multiple segmented polynomials within one echelle order results in significantly better wavelength calibration compared to using a single higher-order polynomial. Segmented polynomials should be used in all applications aimed at precise spectral line position measurements. Secondly, we found that changing astrocombs causes significant zero-point offsets ($\approx 60{\rm cms}^{-1}$ in our raw data) which were removed. Thirdly, astrocombs achieve a precision of $\lesssim 4{\rm cms}^{-1}$ in a single exposure ($\approx 10\% $ above the measured photon-limited precision) and $1 {\rm cms}^{-1}$ when time-averaged over a few hours, confirming previous results. Astrocombs therefore provide the technological requirements necessary for detecting Earth-Sun analogues, measuring variations of fundamental constants and the redshift drift.
description: 16 pages, 17 figures, accepted for publication in MNRAS
Magic angle effects of the one-dimensional axis conductivity in quasi-one dimensional conductors
Creators: name: Hasegawa, Yasumasa
name: Kaneyasu, Hirono
name: Kishigi, Keita
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In quasi-one-dimensional conductors, the conductivity in both one-dimensional axis and interchain direction shows peaks when magnetic field is tilted at the magic angles in the plane perpendicular to the conducting chain. Although there are several theoretical studies to explain the magic angle effect, no satisfactory explanation, especially for the one-dimensional conductivity, has been obtained. We present a new theory of the magic angle effect in the one-dimensional conductivity by taking account of the momentum-dependence of the Fermi velocity, which should be large in the systems close to a spin density wave instability. The magic angle effect is explained in the semiclassical equations of motion, but neither the large corrugation of the Fermi surface due to long-range hoppings nor hot spots, where the relaxation time is small, on the Fermi surface are required.
description: 4 pages, 3 figures
Identification of Somatic Driver Mutations in a Tpl2-/- Model of Cutaneous Squamous Cell Carcinoma
Creators: name: Dempsey, Bretton
Publisher: name: American University
Year: 2023

description: Cutaneous squamous cell carcinoma (cSCC), originating from epidermal keratinocytes, is the second-most common form of non-melanoma skin cancer. Mainly caused by cumulative ultraviolet exposure, a recent surge in prevalence has been observed. Coupled with high rates of metastasis, this affliction poses a serious public health threat. Tumor Progression Locus 2 (Tpl2), also known as Cot or MAP3K8, is a serine/threonine kinase in the mitogen-activated protein kinase (MAPK) signal transduction cascade. Implicated in a variety of cell growth and inflammation pathways, Tpl2 activity has been identified in numerous cancers including breast, endometrial, thymomas, lymphomas, lung, Hodgkin’s disease, and nasopharyngeal carcinoma. Previously thought to be solely an oncogene, Dr. DeCicco-Skinner’s laboratory has established a tumor suppressor role for Tpl2 in the context of cSCC. The recent pharmaceutical interest in Tpl2 inhibition as a treatment for rheumatoid arthritis or in chemotherapy displays the need for more research on this gene. The purpose of this thesis was to analyze the underlying genetic mechanisms behind increased cSCC susceptibility in Tpl2-/- mice. This was accomplished through the sequencing and mutational analysis of H-ras, Tp53, and EGFR from Tpl2-/- and wildtype tissue and tumor samples.
Marketing strategy for the UBC / Alex Fraser Research Forest
Creators: name: St-Amour, Shaun
Publisher: name: The University of British Columbia
Year: 2014

description: The markets that I wish to target are companies within the secondary wood industry who are producing innovative and specialty products. The size of the small diameter Douglas-fir trees do not allow the manufacturing of products into commodity markets, thus market segmentation is required to locate a viable product that can be made from this resource. The UBC / Alex Fraser Research Forest should establish a manufacturing facility to produce lamels. A lamel is a small strip of wood. They will be sold to companies that produce either of the 3 following products: flooring, window sashes, and hybrid walls for log homes. Eventually, the process could be vertically integrated to incorporate one, all, or even more products. However, this will only occur when the process is deemed cost-effective. The correct marketing mix of promotion, place, price and product will allow the establishment of partnerships with two BC value-added companies. Logsmith Homes Ltd., Chemainus, BC, and Legacy Wood Works Ltd, Okanagan Falls, are two companies were a partnership between them and the UBC / Alex Fraser Research Forest could produce an economically and sustainable solution to the unique business challenge facing the Caribou Forest Region. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Teacher Counselors are Better for Students’ Developmental Needs: A Case study of Kalinga Institute of Social Sciences (KISS), KIIT UniversityTeacher Counselors are Better for Students’ Developmental Needs: A Case study of Kalinga Institute of Social Sciences (KISS), KIIT University
Creators: name: Das, Pabitra Kumar
Publisher: name: figshare
Year: 2020
Subjects: subject: 130305 Educational Counselling
subject: FOS: Educational sciences
subject: 170106 Health, Clinical and Counselling Psychology
subject: FOS: Psychology

description: Article sharing about an institutional best practices on student developmentArticle sharing about an institutional best practices on student development
A mechanism for the T-odd pion fragmentation function
Creators: name: Gamberg, Leonard P.
name: Goldstein, Gary R.
name: Oganessyan, Karo A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a simple rescattering mechanism to calculate a leading twist $T$-odd pion fragmentation function, a favored candidate for filtering the transversity properties of the nucleon. We evaluate the single spin azimuthal asymmetry for a transversely polarized target in semi-inclusive deep inelastic scattering (for HERMES kinematics). Additionally, we calculate the double $T$-odd $\cos2ϕ$ asymmetry in this framework.
description: 6 pages revtex, 7 eps figures, references added and updated in this published version
La Ampliacion de Turnos en la Industria Chilena: La Factibilidad de una Politica de Empleo Productivo
The Amplification of Shifts in the Chilean Industry: The Feasibility of a Productive Employment Policy
Creators: name: Ramos, Joseph
name: Ramos, Joseph
Publisher: name: Unknown
Year: 1975
Subjects: Labor and Human Capital
Production Economics

description: El presente estudio elaborado par PREALC contiene un analisis de la frecuencia del uso de turnos en la industria manufacturera chilena, identificando los sectores en que dicha frecuencia es baja, explicando sus causas y proponiendo diversas medidas de politica economica para aumentar dicha frecuencia y, par consiguiente, la utilizacion de la capacidad instalada en el sector industrial. Can este estudio, PREALC quiere asi contribuir a una mejor comprension de los factores que originan la baja capacidad de absorcion de mano de obra que, en general, se observa en el sector industrial de diversas paises de America Latina y que, en consecuencia, lleven a las autoridades gubernamentales pertinentes a adoptar las medidas de politica economica conducentes al logro de un mayor nivel de empleo productivo. Este trabajo no habria sido posible sin la valiosa colaboracion de diversas entidades chilenas, particularmente el Ministerio de Economia y la CorporaciOn de Fomento de la Produccion, quienes facilitaron la recopilacion de la informaciOn basica y patrocinaron la realizacion de una'encuesta especialmente disenada can este propOsito. Asimismo, el estudio se benefici6 de estudios similares llevados a cabo par el Centro de Estudios para el Desarrollo de America Latina de la Universidad de Boston, Estados Unidos, para diversas paises de Am6rica Latina. Una version preliminar del mismo fue presentado en un Seminario organizado par dicho Centro en Bogota en enero de 1974. El presente estudio fue elaborado par el senor Joseph Ramos, economista de PREALC, quien con-to can la valiosa colaboracion de la senorita Victoria Contreras y de los senores Hernan Alvarez y Cristian Eyzaguirre, tambien funcionarios de PREALC.
Synchrotron emission from the depths of pulsar magnetospheres
Creators: name: Osmanov, Z.
name: Yoshida, Z.
name: Berezhiani, V. I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper we study the generation of high energy emission from normal pulsars. For this purpose we consider the particles accelerated in the outer magnetosphere sliding along the closed magnetic field lines. It has been shown that in due course of motion the initial small pitch angle increases and at a certain distance from the neutron star the synchrotron emission becomes significant. We found that a region covered from $150$ to $500$ stellar radii the emission pattern is characterised by energies in the interval $(0.1-10)$ MeV.
description: 7 pages, 3 figures
Supplementary Materials from Why is cancer not more common? A changing microenvironment may help to explain why, and suggests strategies for anti-cancer therapy
Creators: name: Xiaowei Jiang
name: Tomlinson, Ian P. M.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary figures, supplementary movie legends and supplementary notes
title: James Lackington (1746-1815) and reading in the late eighteenth century
Creators: name: Bankes, Sophie
Publisher: name: The Open University
Year: 2014

description: This thesis contributes to the history of reading in the eighteenth century by examining the impact of reading on the life and work of the bookseller James Lackington. It illustrates the transfonnative power of reading in the period, its ability radically to alter the life of a man of humble birth. It presents a detailed analysis of Lackington's two autobiographies, Memoirs of the First Forty-Five Years of the Life of James Lackington (1791), and the later and neglected Confessions of J. Lackington (1804). The numerous quotations they contain become the basis in the thesis for a detailed reconstruction of Lackington' s reading. These two texts also provide evidence of Lackington's use of literary tools such as review journals, miscellanies and dictionaries, and the thesis here builds upon the work of Barbara Benedict, Leah Price, Antonia Foster and others to trace his developing confidence as consumer and distributor of texts. It uncovers the crucial role played by Methodism in Lackington's reading career and documents his complex relationship to the religion of his youth, which he rejects in favour of freethinking only to return to it in later life. The thesis is also concerned to explore the relationship between reading and identity in the eighteenth century. It discusses the way in which Lackington employs reading in his autobiographies to construct a new identity compatible with his social aspirations, and it considers his attempts to influence the choices of the reading public both in his autobiographies and, as a bookseller, by designing sales catalogues to appeal to and aid inexperienced readers in their buying choices. Unlike previous studies, it examines the whole of Lackington's life, not just his bookselling years, and in so doing gives a fuller account of the rich and complex relationship between religion and reading in this period. Lackington, it is argued, was an extraordinary reader himself, as well as an inspirational seller of books and promoter of reading in others.
Liquidity Risks Models in Jordanian Commercial Banks.pdf
Creators: name: AL-Naimi, Ahmad
Publisher: name: figshare
Year: 2020
Subjects: subject: 150201 Finance
subject: FOS: Economics and business

description: The relatively large size of the commercial banks in Jordan compared to other sectors in the economy as well as the turmoil
in the MENA region is the motivation of this study analysed the impact of internal bank factors such as profitability, capital,
credit, size and quality of management on liquidity risk for thirteen Jordanian commercial banks while controlling for the
regulatory and macroeconomic environment using a panel data model. The econometric results show that profitability has
a positive impact on liquidity risk whilst the existence of an efficient management has a negative impact on liquidity risk.
Finally, the impact of capital and credit on liquidity risk had an ambiguous effect due to the interactions between the
different factors. The breadth of commercial banks’ activities in Jordan as regards financing most of the economic sectors
in the country through their role as financial intermediaries marks the importance of shielding them from liquidity risks.
By degree
Creators: name: Gale, Jessica
name: Jayaswal, Leena
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3605
subject: Screen and digital media

description: A short animated documentary about young people with college degrees who are having trouble finding work in the field of study. Visuals are comprised of cut-out watercolored paper, animated through stop-motion technique.
Chinatown
Creators: name: Chen, Yi
name: Griffin, Gary
name: Douglass, John
name: Chow, Esther
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3605
subject: Screen and digital media

description: Set in the historic Chinatown neighborhood in Washington, D.C., this observational documentary provides an insight into the impact of gentrification on the daily lives of its residents. The film intimately follows three residents over the course of a year. Their stories give voice to the community's attempt to preserve the culture and heritage they value.
Periodic Integration & Cointegration: With Applications to the New Zealand Aggregate Consumption Functions
Creators: name: Harrison, Robin
name: Smith, Aaron
name: Harrison, Robin
name: Smith, Aaron
Publisher: name: Unknown
Year: 1994
Subjects: Research Methods/ Statistical Methods

description: This study addresses the theory and application of periodic integration and cointegration. A strategy for testing for periodic integration, originally proposed by Osborn et al. (1988) is further developed and, along with the Vector of Quarters test (Franses (1994)), is applied to aggregate New Zealand consumption and disposable income data. Consumption is found to be possibly periodically integrated while income appears to be seasonally integrated. Where appropriate, the bootstrap technique is used to simulate critical values for these tests. A representation for a bivariate periodic cointegration model, including its associated error correction mechanism, is derived. However, because of limited degrees of freedom, a parsimonious approximation is proposed. This is applied to the New Zealand aggregate consumption function and its results briefly compared to those from a non-periodic cointegration model. Neither model is found to be superior in all respects.
Zeolite-inspired 3d printed structures with enhanced mechanical properties
Creators: name: Ambekar, Rushikesh S.
name: Oliveira, Eliezer F.
name: Kushwaha, Brijesh
name: Machado, Leonardo D.
name: Sajadi, Mohammad
name: Baughman, Ray H.
name: Ajayan, Pulickel M.
name: Roy, Ajit K.
name: Galvao, Douglas S.
name: Tiwary, Chandra S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Specific strength (strength/density) is a crucial factor while designing high load bearing architecture in areas of aerospace and defence. Strength of the material can be enhanced by blending with high strength component or, by compositing with high strength fillers but both the options has limitations such as at certain load, materials fail due to poor filler and matrix interactions. Therefore, researchers are interested in enhancing strength of materials by playing with topology/geometry and therefore nature is best option to mimic for structures whereas, complexity limits nature mimicked structures. In this paper, we have explored Zeolite-inspired structures for load bearing capacity. Zeolite-inspired structure were obtained from molecular dynamics simulation and then fabricated via Fused deposition Modeling. The atomic scale complex topology from simulation is experimentally synthesized using 3D printing. Compressibility of as-fabricated structures was tested in different direction and compared with simulation results. Such complex architecture can be used for ultralight aerospace and automotive parts.
description: 24 pages, 6 figures
Linear Programming with Mathematica
Creators: name: Carter, Michael
name: Carter, Michael
Publisher: name: Unknown
Year: 1994
Subjects: Research Methods/ Statistical Methods

description: We exploit the symbolic manipulation capability of Mathematica to elucidate the simplex algorithm of linear programming clearly and intuitively. We then develop a set of tools for conducting sensitivity analysis of the optimal solution. In order to utilize Mathematica's efficient linear programming routine, we develop a function which can deduce the final tableau from the Spartan output of ConstrainedMax. This final tableau contains all the information usually provided by a good linear programming package, which can than be explored using the techniques of sensitivity analysis developed in the paper. This enables the package to be applied to a substantive problem, relying on Mathematica's native code for intensive computation. To illustrate, we apply the package to analyse a classic problem in efficient nutrition.
Election cycle
Creators: name: Kallgren, Kyle
name: Stogner, Margaret
name: Douglass, John
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3605
subject: Screen and digital media

description: Facing defeat in the presidential elections of 2024, the campaign of Congressman Frederick Tipler invests in a time machine so they can erase their mistakes.
Acoustic Wave Induced FMR Assisted Spin-Torque Switching of Perpendicular MTJs with Anisotropy Variation
Creators: name: Misba, Walid Al
name: Rajib, Md. Mahadi
name: Bhattacharya, Dhritiman
name: Atulasimha, Jayasimha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have investigated Surface Acoustic Wave (SAW) induced ferromagnetic resonance (FMR) assisted Spin Transfer Torque (STT) switching of perpendicular MTJ (p-MTJ) with inhomogeneities using micromagnetic simulations that include the effect of thermal noise. With suitable frequency excitation, the SAW can induce ferromagnetic resonance in magnetostrictive materials, and the magnetization can precesses in a cone with high deflection from the perpendicular direction. With incorporation of inhomogeneity via lateral anisotropy variation as well as room temperature thermal noise, the magnetization precession in different gains can be significantly incoherent. Interestingly, the precession in different grains are found to be in phase, even though the precession amplitude (angle of deflection from the perpendicular direction) vary across grains of different anisotropy. Nevertheless, the high mean deflection angle can complement the STT switching by reducing the STT current significantly; even though the applied stress induced change in anisotropy is much lower than the total anisotropy barrier. This work indicates that SAW assisted switching can improve energy efficiency while being scalable to very small dimensions, which is technologically important for STT-RAM and elucidates the physical mechanism for the potential robustness of this paradigm in realistic scenarios with thermal noise and material inhomogeneity
A new improved optimization of perturbation theory: applications to the oscillator energy levels and Bose-Einstein critical temperature
Creators: name: Kneur, J. -L.
name: Neveu, A.
name: Pinto, M. B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Improving perturbation theory via a variational optimization has generally produced in higher orders an embarrassingly large set of solutions, most of them unphysical (complex). We introduce an extension of the optimized perturbation method which leads to a drastic reduction of the number of acceptable solutions. The properties of this new method are studied and it is then applied to the calculation of relevant quantities in different $ϕ^4$ models, such as the anharmonic oscillator energy levels and the critical Bose-Einstein Condensation temperature shift $ΔT_c$ recently investigated by various authors. Our present estimates of $ΔT_c$, incorporating the most recently available six and seven loop perturbative information, are in excellent agreement with all the available lattice numerical simulations. This represents a very substantial improvement over previous treatments.
description: 9 pages, no figures. v2: minor wording changes in title/abstract, to appear in Phys.Rev. A
Marketing strategy for small diameter Douglas-fir
Creators: name: Ashari, Newsha
name: Mak, Jamie
Publisher: name: The University of British Columbia
Year: 2014

description: This report is an investigation into the marketing strategies for small diameter Douglas-fir logs. The Cariboo Forest Region in British Columbia is overcrowded with small diameter Douglas-fir trees. This poses several environmental problems in the region, which includes the reduction in large diameter trees and mule deer populations, and an increased probability of serious forest fires. Through commercial thinning, there will be access to the small diameter trees. There are vast product opportunities to utilize the small diameter Douglas-fir logs. Due to the softwood lumber dispute and high logging costs, the highest and best use of the resources is value-added products. After analyzing the advantages and disadvantages of potential value-added products, solid Douglas-fir RTA furniture has the best potential to enter the market and make a profit. The target markets for the furniture are retailers – aiming at middle to low class consumers. The product line included tables, chairs, entertainment centres, desks, bookcases, hutches and dressers; these products will be showcased and promoted at trade shows and in catalogues. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Dynamic Skyrmion-Mediated Switching of Perpendicular MTJs: Scaling to 20 nm with Thermal Noise
Creators: name: Rajib, Md Mahadi
name: Misba, Walid Al
name: Bhattacharya, Dhritiman
name: Garcia-Sanchez, Felipe
name: Atulasimha, Jayasimha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: One method of creating and annihilating skyrmions in confined geometries is to use Voltage-Controlled Magnetic Anisotropy (VCMA) [1, 2, 3]. Previous study shows that robust voltage controlled ferromagnetic reversal from up to down state in the soft layer of a perpendicular Magnetic Tunnel Junction (p-MTJ) can be achieved by creating and subsequently annihilating an intermediate skyrmion state [4] in the presence of room temperature thermal noise and anisotropy variation across grains [4]. However, when scaling to 20 nm, thermal noise can annihilate the skyrmions, for example, by randomly moving the core towards the boundary of the nanostructure. In this work, we study three p-MTJs of different dimensions, particularly lateral dimensions of 100nm, 50nm and 20 nm and investigate the change in switching behavior as the dimension is decreased. Particularly, our focus is to investigate to what extent skyrmion mediated switching scheme can be employed below ~50nm lateral dimensions in the presence of thermal perturbation.
More on Conformally Sequestered SUSY Breaking
Creators: name: Ibe, M.
name: Izawa, K. -I.
name: Nakayama, Yu
name: Shinbara, Y.
name: Yanagida, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend our models for conformal sequestering of dynamical supersymmetry breaking with decoupling vector-like matter in several different ways. These extensions enable us to simplify concrete model building, in particular, rendering large gauge group and ad hoc global symmetry for sequestering unnecessary. Conformal sequestering appears highly natural in such circumstances.
description: 21 pages, v2: reference added
Caged Black Holes: Black Holes in Compactified Spacetimes II - 5d Numerical Implementation
Creators: name: Sorkin, Evgeny
name: Kol, Barak
name: Piran, Tsvi
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe the first convergent numerical method to determine static black hole solutions (with S^3 horizon) in 5d compactified spacetime. We obtain a family of solutions parametrized by the ratio of the black hole size and the size of the compact extra dimension. The solutions satisfy the demanding integrated first law. For small black holes our solutions approach the 5d Schwarzschild solution and agree very well with new theoretical predictions for the small corrections to thermodynamics and geometry. The existence of such black holes is thus established. We report on thermodynamical (temperature, entropy, mass and tension along the compact dimension) and geometrical measurements. Most interestingly, for large masses (close to the Gregory-Laflamme critical mass) the scheme destabilizes. We interpret this as evidence for an approach to a physical tachyonic instability. Using extrapolation we speculate that the system undergoes a first order phase transition.
description: 42 pages, 19 eps figures; v2: 3 references added, version to appear in Phys.Rev.D
Are People Really Risk Seeking When Facing Losses?
Creators: name: Fountain, John
name: McCosker, Michael
name: Morris, Dean
name: Fountain, John
name: McCosker, Michael
name: Morris, Dean
Publisher: name: Unknown
Year: 1994
Subjects: Risk and Uncertainty

description: An experiment and operational subjective Bayesian statistical methods are used to investigate the relation between risk attitudes in the loss domain and framing effects. We find that subjects avoid pure increases in risk when such risks are transparent, that there is little or no correlation between risk attitudes in frames that alternately mask and make transparent pure increases in risk, and that analysing risk attitudes when prospects are presented as lists of prizes and probabilites overstates the likelihood of risk seeking in the loss domain. In general GEUT fails to predict better than a naive theory holding a uniform prior and Bayesian updating. The one exception is in a frame (viewed marginally) where costs of acquiring and processing information are low.
Probing Early-Time Dynamics and Quark-Gluon Plasma Transport Properties with Photons and Hadrons
Creators: name: Gale, Charles
name: Paquet, Jean-François
name: Schenke, Björn
name: Shen, Chun
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We use a hybrid model which relies on QCD effective kinetic theory -- K\oMP\oST -- to dynamically bridge the gap between IP-Glasma initial states and viscous hydrodynamics, for the theoretical interpretation of heavy-ion collision results. The hydrodynamic phase is then followed by dynamical freeze-out handled by UrQMD. It is observed that the new pre-equilibrium/pre-hydro phase does influence the extraction of transport coefficients. We also show how the early dynamics is reflected in photon observables.
description: 4 pages, 2 figures, contribution to the proceedings of XXVIIIth International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019)
title: The role of TIA-1 as a cellular restriction factor for tick-borne encephalitis virus infection
Creators: name: Albornoz, Amelina Andrea
Publisher: name: The Open University
Year: 2014

description: Tick-borne encephalitis virus (TBEV) is a positive-single stranded RNA Virus belonging to the Flaviviridae family. Flaviviruses replicate in the cytoplasm of infected cells and therefore during the different viral steps viral RNA is exposed to diverse cellular responses. The contribution of host RNA-binding proteins to flaviviral replication is an important issue under investigation. T-intracellular antigen-1 (TIA-1) is a stress-induced RNA-binding protein shown to be involved in the repression of initiation of translation of cellular mRNAs. When cells are subjected to UV radiation, heat shock, oxidative stress, as well as to certain viral infections, TIA-1 migrates from the nucleus and accumulates to form cytoplasmic foci named stress granules (SG). In this work I show that TIA-1 and TIAR knockdown by RNAi in human cells led to an increase of TBEV RNA levels as well as extracellular infectivity. Taking advantage of a TBE-luciferase replicon system developed in our lab, I could demonstrate that TIA-1 affected viral replication, more specifically at the level of the initial round of translation. I could also show by RNA immuneprecipitation of TIA-1 that the protein was interacting with viral RNA in TBEV infected cells. Moreover, during TSEY infection, cytoplasmic TIA-l was recruited at perinuclear sites of viral replication with concomitant depletion of TIA-1 SGs. This effect was TIA-1 specific since G3BP1, another SG protein, remained in SGs and did not re-localize to sites of viral replication. In addition, heat-shock induction of TIA-1 SGs, but not G3BP1 SGs, was inhibited in TBEV infected cells. I could observe that G3BP SG contained RIG-I protein in TBEV infected cells and also I could demonstrate that RIG-I was involved in the activation of IFNβ expression upon TBEV infection. Moreover, I could show that G3BP SG were forming around the same time in which IFNβ was induced in TBEV infected cells, leading to the hypothesis of a possible cross-talk between stress pathway and immune response during TBEV infection. In conclusion, I could demonstrate that TIA-1 is recruited to sites of viral replication, binds to viral RNA and negatively regulates viral replication, possibly by inhibiting the first round of viral translation.
HATS: A Ground-Based Telescope to Explore the THz Domain
Creators: name: de Castro, C. G. Giménez
name: Raulin, J. -P.
name: Valio, A.
name: Alaia, G.
name: Alvarenga, V.
name: Bortolucci, E. C.
name: Fernandes, S. H.
name: Francile, C.
name: Giorgetti, T.
name: Kudaka, A. S.
name: López, F. M.
name: Marcon, R.
name: Marún, A.
name: Zaquela, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The almost unexplored frequency window from submillimeter to mid-infrared (mid-IR) may bring new clues about the particle acceleration and transport processes and the atmospheric thermal response during solar flares. Because of its technical complexity and the special atmospheric environment needed, observations at these frequencies are very sparse. The High Altitude THz Solar Photometer (HATS) is a full-Sun ground-based telescope designed to observe the continuum from the submillimeter to the mid-IR. It has a 457-mm spherical mirror with the sensor in its primary focus. The sensor is a Golay cell with high sensitivity in a very wide frequency range. The telescope has a polar mount, and a custom-built data acquisition system based on a 32 ksamples per second, 24 bits (72 dB dynamic range), 8 channels analog-to-digital board. Changing only the composition of the low- and band-pass filters in front of the Golay cell, the telescope can be setup to detect very different frequency bands; making the instrument very versatile. In this article we describe the telescope characteristics and its development status. Moreover, we give estimates of the expected fluxes during flares.
description: Accepted for publication in Solar Physics. 13 pages, 3 Figures and 2 Tables