cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electronic properties of guanine-based nanowires
Creators: name: Calzolari, Arrigo
name: Di Felice, Rosa
name: Molinari, Elisa
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a first-principle study of the electronic and conduction properties of a few classes of nanowires constituted of guanine (G) molecules, self-assembled in different geometries. We first analyze the effect of the vertical $π$-$π$ interaction in model G-stack columns. Then, we exploit the results obtained from those models to interpret the features of realistic stacked and hydrogen-bonded structures, namely the guanine quadruple helices and the planar ribbons. With respect to natural DNA, the different structures as well as the inclusion of metal cations, drastically affect the bonding pattern among the bases, introducing novel features in the electronic properties of the systems. These supramolecular G-aggregates, alternative to DNA, are expected to show intersting properties for molecular elec tronics applications.
description: 30 pages (preprint format), 8 figures. To appear in Solid State Communications - Special Issue on "New advances on collective phenomena in one-dimensional systems"
Late Victorian Imperialism: A Study of Imperialism as Reflected in the British Opinion Periodicals, 1890-1899
Creators: name: Clem, Alan Leland
Publisher: name: American University
Year: 2023

description: Since its renaissance in the closing decades of the 19th Century, Imperialism has been the subject of much scholarly and popular attention. In fact, Imperialism has been so thoroughly studied that it claims an imposing bibliography ranking with those of other broad aspects of European history such as the Enlightenment, Nationalism, Liberalism, and Socialism. From this bibliography and filtering down through the textbook level and eventually reaching the popular consciousness has come a set of stereotypes regarding the nature and meaning of Imperialism.
Imaging of High Redshift Submillimeter Galaxies at 16 and 22microns with the Spitzer/IRS: Revealing a population at z>2.5
Creators: name: Charmandaris, V.
name: Uchida, K. I.
name: Weedman, D.
name: Herter, T.
name: Houck, J. R.
name: Teplitz, H. I.
name: Armus, L.
name: Brandl, B. R.
name: Higdon, S. J. U.
name: Soifer, B. T.
name: Appleton, P. N.
name: van Cleve, J.
name: Higdon, J. L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present broad band imaging observations obtained with the ``peak up'' imagers of the Spitzer Space Telescope Infrared Spectrograph (IRS) at wavelengths of 16micron and 22micron for a number of sources detected primarily at submillimeter wavelengths, which are believed to be at high, though undetermined, redshift. We targeted 11 sources originally detected by SCUBA and 5 submillimeter sources detected at 1.2mm by MAMBO. Two optically discovered quasars with z>6 were also observed to determine if there is detectable dust emission at such high redshifts. Seven of the submillimeter sources and both high-redshift quasars were detected, and upper limits of about ~50microJy apply to the remainder. Using their mid-/far-IR colors, we demonstrate that all of the submillimeter sources are at z>1.4. The mid-IR colors for two of our detections and three of our strong upper limits suggest that these galaxies must be at z>2.5. We also introduce a technique for estimating redshifts and source characteristics based only on the ratio of fluxes in the 16micron and 22micron images.
description: Accepted in ApJ Sup. Spitzer Special Issue, 4 pages, 1 figure
Talent Utilization, a Source of Bias in Measuring TFP
Creators: name: Zoabi, Hosny
name: Zoabi, Hosny
Publisher: name: Unknown
Year: 2006
Subjects: Financial Economics
Public Economics

description: This paper analyzes a model of economic growth that explains di®erences in economic structure across countries. It highlights the interplay between productivity, talents utilization and entrepreneurship incentives. The paper has two main results. First, it argues that when measuring human capital we ignore one dimension, which is \talents utilization". It is suggested then that, in development accounting, human capital is inaccurately measured. Second, it shows that the magnitude of talents utilization increases with the level of development. Thus, the paper suggests that talents utilization ampli¯es dif- ferences in productivity and contributes to the explanation of large observed international di®erences in per capita income. ¤
Late Victorian Imperialism: A Study of Imperialism as Reflected in the British Opinion Periodicals, 1890-1899
Creators: name: Clem, Alan Leland
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 4303
subject: Historical studies
classificationCode: 4408
subject: Political science
subject: FOS: Political science
classificationCode: 4701
subject: Communication and media studies

description: Since its renaissance in the closing decades of the 19th Century, Imperialism has been the subject of much scholarly and popular attention. In fact, Imperialism has been so thoroughly studied that it claims an imposing bibliography ranking with those of other broad aspects of European history such as the Enlightenment, Nationalism, Liberalism, and Socialism. From this bibliography and filtering down through the textbook level and eventually reaching the popular consciousness has come a set of stereotypes regarding the nature and meaning of Imperialism.
Radiative Transfer Modeling of Passive Circumstellar Disks: Application to HR4796A
Creators: name: Currie, T.
name: Semenov, D.
name: Henning, Th.
name: Furlan, E.
name: Herter, T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a radiative transfer model which computes the spectral energy distribution of a passive, irradiated, circumstellar disk, assuming the grains are in radiative equilibrium. Dependence on radial density profile, grain temperature estimation, and optical depth profiles on the output SED are discussed. The bist fit model for HR4796A has a minimum and maximum spherical grain size of 2.2 and 1000 μ$m respectively, a size distribution slightly steeper than the "classical" -3.5 MRN power law, grains composed of silicates, trolite, ice, and organics and a peak radial density of 1.0 x 10^-17 g cm^-2 at 70 AU, yielding a disk mass of roughly 2 M_{oplus}$.
description: 4 pages, one figure, published in proceedings of Scientific Frontiers in Research on Extrasolar Planets, A.S.P. Conferences Series Vol. 294 (with correction in equation 3)
Is there place for women? Gender bias at top economics schools
Creators: name: Hale, Galina
name: Hale, Galina
Publisher: name: Unknown
Year: 2010
Subjects: subject: Financial Economics
subject: gender
subject: segregation
subject: economists
subject: gender bias
subject: affirmative action
subject: minority

description: Over the last twenty years women became much more prominent in the economics profession. Analyzing faculty and graduate students data for the top-10 economics departments between 1983 and 2007, we find persistent differences in gender composition across institutions. We test whether such differences are driven by female faculty influence or by departments’ gender preferences. Using a matched sample of PhD students and faculty, we find positive correlation between the share of female faculty and the share of women in the entering PhD class. We show that this correlation is explained by departments’ gender preferences that vary both across departments and over time, and not by influence of female faculty on the gender composition of the entering PhD class. We also find that these top-10 departments are targeting a certain trend in the number or share of women on their faculty, lowering on average the probability of hiring a woman by about 10 percentage points for each additional woman already on the faculty. This evidence suggests that gender differences across institutions are explained by gender preferences and policies rather than hysteresis related to women’s influence.
Tridiagonalization of systems of coupled linear differential equations with variable coefficients by a Lanczos-like method
Creators: name: Giscard, P. -L.
name: Pozza, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 35A24, 47B36

description: We show constructively that, under certain regularity assumptions, any system of coupled linear differential equations with variable coefficients can be tridiagonalized by a time-dependent Lanczos-like method. The proof we present formally establishes the convergence of the Lanczos-like algorithm and yields a full characterization of algorithmic breakdowns. From there, the solution of the original differential system is available in closed form. This is a key piece in evaluating the elusive ordered exponential function both formally and numerically.
The status of Puerto Rico in international law
Creators: name: Morales-Yordan, Jorge
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 48
subject: Law and legal studies
classificationCode: 4803
subject: International and comparative law

description: Any attempt to analyze the constitutional and international law issues involved in the determination of the status of Puerto Rico requires a general survey of the limitations which have been imposed upon the colony by metropolitan administering powers holding sovereignty over the island, as well as of the power which has been given to local authorities to control internal matters. This analysis should be designed to determine the amount of autonomy given to the dependency in the conduct of its internal and international affairs, because international status depends exclusively on the freedom enjoyed by a dependent area in those two fields.
AMS Food and Beverages Outlets Operational Sustainability : Project Report
Creators: name: Saxena, Aman
name: Pregnolato, Guilio
name: Murthy, Janani
name: Kota, Sri Apoorva
Publisher: name: The University of British Columbia
Year: 2018

description: The University of British Columbia recently developed a zero-waste action plan to reach towards sustainability leadership. Participating in this collective effort, the SEEDs initiative collaborated with AMS Food and Beverage services to investigate food ware procurement and a potential source of cross contamination within the NEST building. We developed an inventory of food ware outputted by each outlet and investigated the likelihood of back-of-house waste sorting leading to cross-contamination; finally, we made short observations that we deem useful for policy makers. The primary stakeholders are the food and beverages outlets of the NEST (both AMS and non-AMS operated), the general staff of the NEST, and our SEEDs community partners. To fulfill the objectives of the project, key staff of AMS governed food outlets were interviewed and handed out surveys especially prepared for this project. The data collected were analyzed and reported in two forms: qualitative and quantitative. Our key findings are: • Back-of-House sorting is informal, yet unlikely to result in cross contamination, since only garbage is collected in a black bag. Outlets are opposed to standardization of bins or colour coded bags due to space and procurement complications. • The centralized procurement of AMS outlets contributes to their purchasing power and sustainable practices. This could be leveraged to raise the sustainability efforts of non-AMS outlets within the NEST. • Changes in waste management must be done in agreement with AMS operational staff, UBC Sustainability and UBC Building Operations. 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.”
Trade and Labor Market Outcomes
Creators: name: Helpman, Elhanan
name: Itskhoki, Oleg
name: Redding, Stephen
name: Helpman, Elhanan
name: Itskhoki, Oleg
name: Redding, Stephen
Publisher: name: Unknown
Year: 2010
Subjects: subject: Financial Economics
subject: International Relations/Trade
subject: Marketing
subject: FOS: Economics and business
subject: inequality
subject: unemployment
subject: trade
subject: labor market policy

description: This paper reviews a new framework for analyzing the interrelationship between inequality, unemployment, labor market frictions, and foreign trade. This framework emphasizes firm heterogeneity and search and matching frictions in labor markets. It implies that the opening of trade may raise inequality and unemployment, but always raises welfare. Unilateral reductions in labor market frictions increase a country's welfare, can raise or reduce its unemployment rate, yet always hurt the country's trade partner. Unemployment benefits can alleviate the distortions in a country's labor market in some cases but not in others, but they can never implement the constrained Pareto optimal allocation. We characterize the set of optimal policies, which require interventions in product and labor markets.
The status of Puerto Rico in international law
Creators: name: Morales-Yordan, Jorge
Publisher: name: American University
Year: 2023

description: Any attempt to analyze the constitutional and international law issues involved in the determination of the status of Puerto Rico requires a general survey of the limitations which have been imposed upon the colony by metropolitan administering powers holding sovereignty over the island, as well as of the power which has been given to local authorities to control internal matters. This analysis should be designed to determine the amount of autonomy given to the dependency in the conduct of its internal and international affairs, because international status depends exclusively on the freedom enjoyed by a dependent area in those two fields.
The 11-20 Money Request Game: Evaluating the Upper Bound of k-Level Reasoning
Creators: name: Arad, Ayala
name: Rubinstein, Ariel
name: Arad, Ayala
name: Rubinstein, Ariel
Publisher: name: Unknown
Year: 2010
Subjects: subject: Financial Economics
subject: level-k thinking
subject: salience
subject: iterative reasoning

description: We study experimentally (with monetary incentives) a two-player game which is ideal for investigating k-level reasoning. Each player requests an amount of money between 11 and 20 shekels. He receives the amount that he requests and if he requests exactly one shekel less than the other player, he receives an additional 20 shekels. We argue that the game can provide an "upper bound" for the depth of k-level reasoning in a population. We support this conjecture by studying several variations of the game which manipulate the attractiveness of the level-0 strategy and the monetary cost of undercutting the other player.
Income Distribution, Product Quality, and International Trade
Creators: name: Fajgelbaum, Pablo
name: Grossman, Gene M.
name: Helpman, Elhanan
name: Fajgelbaum, Pablo
name: Grossman, Gene M.
name: Helpman, Elhanan
Publisher: name: Unknown
Year: 2011
Subjects: subject: Financial Economics
subject: International Relations/Trade
subject: monopolistic competition
subject: vertical specialization
subject: product quality
subject: nested logit

description: We develop a framework for studying trade in vertically and horizontally differentiated products. In our model, consumers with heterogeneous incomes and tastes purchase a homogeneous good as well as making a discrete choice of quality and variety of a differentiated product. The distribution of preferences in the population generates a nested logit demand structure. These demands are such that the fraction of consumers who buy a higher-quality product rises with income. We use the model to study the pattern of trade between countries that differ in size and income distributions but are otherwise identical. Trade - which is driven primarily by demand factors - derives from 'home market effects' in the presence of transport costs. The model helps to explain why richer countries export higher-quality goods. It provides a tractable tool for studying the welfare consequences of trade, transport costs, and trade policy for different income groups in an economy.
Working Hard or Working Smart?
Creators: name: Bracha, Anat
name: Fershtman, Chaim
name: Bracha, Anat
name: Fershtman, Chaim
Publisher: name: Unknown
Year: 2018
Subjects: Financial Economics
Labor and Human Capital

description: Almost all jobs require a combination of cognitive effort and labor effort. The focus of the paper is on the effect of different incentive schemes on the chosen combination of these types of efforts. We use an experimental approach to show that tournament incentives may induce agents to work harder but not necessarily smarter. This effect was stronger for women. We then ran a "managerial bonus" experiment in which a preassigned manager receives a bonus whenever the overall performance of his/her group is above a given threshold level. Although the bonus does not affect the participants' direct incentives, it induces participants to lower their cognitive effort and increase their labor effort.
Additional file 4 of Gene targets for engineering osmotolerance in Caldicellulosiruptor bescii
Creators: name: Sander, Kyle B.
name: Daehwan Chung
name: Klingeman, Dawn M.
name: Giannone, Richard J.
name: Rodriguez, Miguel
name: Whitham, Jason
name: Hettich, Robert L.
name: Davison, Brian H.
name: Westpheling, Janet
name: Brown, Steven D.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: Figure S3. Growth profiles and OD680 of cultures grown alongside those cultures sampled for RNAseq differential expression analysis of strains ORCB001, ORCB002, and JWCB005 (genetic parent strain to both single-gene deletion strains). OD680 values are those of individual culture replicates which were sacrificially sampled and preserved for RNAseq analysis. Growth assays were done in 50 mL culture volumes in 135 mL serum bottles containing a headspace of 100% N2.
Parental Leave and Mothers' Careers: The Relative Importance of Job Protection and Cash Benets
Creators: name: Schlosser, Analia
name: Steinhauer, Andreas
name: Zweimuller, Josef
name: Schlosser, Analia
name: Steinhauer, Andreas
name: Zweimuller, Josef
Publisher: name: Unknown
Year: 2011
Subjects: subject: Financial Economics
subject: Labor and Human Capital
subject: Parental Leave
subject: family and work obligations
subject: return to work
subject: labor supply
subject: earnings
subject: family earnings gap

description: Parental leave regulations in most OECD countries have two key policy instruments: job protection and cash benefits. This paper studies how mothers’ return to work behavior and labor market outcomes are affected by alternative mixes of these key policy parameters. Exploiting a series of major parental leave policy changes in Austria, we find that longer cash benefits lead to a significant delay in return to work and that the magnitude of this effect depends on the relative length of job protection and cash benefits. However, despite their impact on time on leave, we do not find a significant effect on mothers’ labor market outcomes in the medium run, neither of benefit duration nor of job-protection duration. To understand the relative importance (and interaction) of the two policy instruments in shaping mothers’ return to work behavior, we set up a non-stationary job search model in which cash benefits and job protection determine decisions of when to return to work and whether or not to return to the pre-birth employer. Despite its lean structure, the model does surprisingly well in matching empirically observed return to work profiles. The simulation of alternative counterfactual regimes shows that a policy that combines both job protection and benefits payments succeeds to induce mothers to spend some time with the child after birth without jeopardizing their medium run labor market attachment.
Additional file 2 of Alu retrotransposons modulate Nanog expression through dynamic changes in regional chromatin conformation via aryl hydrocarbon receptor
Creators: name: González-Rico, Francisco J.
name: Vicente-García, Cristina
name: Fernández, Almudena
name: Muñoz-Santos, Diego
name: Lluís Montoliu
name: Morales-Hernández, Antonio
name: Merino, Jaime M.
name: Angel-Carlos Román
name: Fernández-Salguero, Pedro M.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Table S1. Complete list of genes encoding identified proteins bound to the X45S and X14S Alu loci obtained via enChIP-mass spectrometry in N-TERA2 cell line.
Rise to the Challenge or Not Give a Damn: Differential Performance in High vs. Low Stakes Tests
Creators: name: Attali, Yigal
name: Neeman, Zvika
name: Schlosser, Analia
name: Attali, Yigal
name: Neeman, Zvika
name: Schlosser, Analia
Publisher: name: Unknown
Year: 2011
Subjects: Financial Economics

description: This paper studies how different demographic groups respond to incentives by comparing performance in the GRE examination in “high” and “low” stakes situations. The high stakes situation is the real GRE examination and the low stakes situation is a voluntary experimental section of the GRE that examinees were invited to take immediately after they finished the real GRE exam. We show that males exhibit a larger difference in performance between the high and low stakes examinations than females, and that Whites exhibit a larger difference in performance between the high and low stakes examinations relative to Asians, Blacks, and Hispanics. We find that the larger differential performance between high and low stakes tests among men and whites can be partially explained by the lower level of effort invested by these groups in the low stake test.
Physics with Coherent Matter Waves
Creators: name: Bongs, K.
name: Sengstock, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: This review discusses progress in the new field of coherent matter waves, in particular with respect to Bose-Einstein condensates. We give a short introduction to Bose-Einstein condensation and the theoretical description of the condensate wavefunction. We concentrate on the coherence properties of this new type of matter wave as a basis for fundamental physics and applications. The main part of this review treats various measurements and concepts in the physics with coherent matter waves. In particular we present phase manipulation methods, atom lasers, nonlinear atom optics, optical elements, interferometry and physics in optical lattices. We give an overview of the state of the art in the respective fields and discuss achievements and challenges for the future.
Combinatorial solutions to generalized electrorheological kernel aggregation
Creators: name: Łepek, Michał
name: Fronczak, Agata
name: Fronczak, Piotr
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: For this paper, we studied the time evolution of a system of coagulating particles under a generalized electrorheological (ER) kernel with real power, $K\left(i,j\right) = \left( \frac{1}{i}+\frac{1}{j} \right)^α$, and monodisperse initial conditions. We used a combinatorial framework in which time and cluster sizes were discrete and the binary aggregation governed the time evolution of the system. We modified a previously-known solution for the constant kernel to cover the generalized ER kernel and used it in the framework to obtain the exact expression for the cluster size distribution (the average number of particles of a given size) and the standard deviation. Our theoretical solution is validated by a comparison to numerically simulated results for several values of $α$ and to the experimental data of coagulating polystyrene particles. Theoretical predictions were accurate for any time of the aggregation process and for a wide range of $α$.
description: 9 pages, 3 figures, appendix, original work. This preprint was submitted to Phys. D. For the accepted version, please see DOI link
The Effects of Television upon Junior High School Children in Arlington County
Creators: name: Gilman, Jeanne M.
Publisher: name: American University
Year: 2023

description: I. THE PROBLEMThere has been a vast amount of controversial opinion expressed in articles and editorials concerning both the harmful as well as the beneficial aspects of the television medium. Television has been accused of every conceivable detriment, even to the extent that it has contributed to juvenile delinquency. But on the other hand, it has been exalted as a possible educational supplement.Being a teacher, as well as a student of communication, the writer as become critically aware of the ambivalence of television.
Variability in Hypertension Management and Data Capture Capacity in Primary Health Care Centers in the Federal Capital Territory of Nigeria
Creators: name: Guo, Tracy
Publisher: name: DigitalHub. Galter Health Sciences Library & Learning Center
Year: 2020
Subjects: subject: Nigeria
subject: blood pressure
subject: cardiovascular disease
subject: Hypertension
subject: Blood Pressure Determination
subject: Primary Health Care
subject: Nigeria

description: Background: Elevated blood pressure (BP) is a leading risk factor for cardiovascular disease (CVD) morbidity and mortality in Nigeria. The Transforming Hypertension Management in Nigeria (HTN) Program aims to adapt, implement, and evaluate the effectiveness and implementation outcomes of a 5-year system-level hypertension control program in 60 primary healthcare centers (PHCs) in Nigeria. Due to the large scale of the HTN Program, PHCs may have different access to equipment, diagnostic and treatment capacity, as well as data capture capacities. Therefore, this project aimed to 1) evaluate and compare service availability and readiness across PHCs; and 2) monitor and report on baseline data entry errors from each PHC in the hypertension registry.Method: Site readiness and capacity was evaluated using the Service Availability and Readiness Assessment (SARA) methodology of the World Health Organization. Patient level data were extracted from the HTN Program patient registry, which is a longitudinal REDCap database. Graphical representations are used to assess the facility-based capacity and readiness for hypertension diagnosis and treatment. Tables were created to list records with various data entry errors at baseline for each site.  Results: Across six council areas within the FCT, there was variability in the presence of basic amenities, equipment, infection prevention, diagnostic capacity and essential medicines. Cardiovascular service availability was consistently high, whereas wide variability was also demonstrated in indicator scores for the presence of guidelines, equipment, and medicines. Missing data and mismatched record Ids are the most common data entry errors across all sites. Variability in the frequency and type of data entry errors exists across sites.Discussion: While service availability and readiness was overall sufficient in the FCT, variability in the hypertension treatment cascade and data capture capabilities exists across primary healthcare centers. Consistent staff trainings and feedback on service implementation and electronic data capture is critical to effective hypertension monitoring, control and treatment.
Deltochilum valgum subsp. acropyge Bates.
Creators: name: He, Tongli
name: Zhang, Runzhi
name: Frank W. Pelsue, Jr.
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Deltochilum
Deltochilum valgum
Deltochilum valgum acropyge bates.

description: Deltochilum valgum acropyge Bates. Magdalena River Valley (48159N, 748509W),
Dept. Tolima, Colombia. Dry forest, 250 m. 18.XI.95.
 Feeding Observations. Seven D. acropyge valgum were captured on one live millipede within the forest. This corroborates Cano’ s observations on D. acropyge valgum in the tropical lowland of Guatemala (1998) and extends its known southern distributional limit, Barro Colorado Island, south to Colombia.
description: Published as part of He, Tongli, Zhang, Runzhi & Frank W. Pelsue, Jr., 2003, A New Species Of The Genus Allaeotes Pascoe From China (Coleoptera: Curculionidae: Dryophthorinae), pp. 127-131 in The Coleopterists Bulletin 57 (2) on page 131, DOI: 10.1649/0010-065x(2003)057[0127:ansotg]2.0.co;2, http://zenodo.org/record/4924141
Non-Newtonian Topological Mechanical Metamaterials Using Feedback Control
Creators: name: Sirota, Lea
name: Ilan, Roni
name: Shokef, Yair
name: Lahini, Yoav
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We introduce a method to design topological mechanical metamaterials that are not constrained by Newtonian dynamics. The unit cells in a mechanical lattice are subjected to active feedback forces that are processed through autonomous controllers, pre-programmed to generate the desired local response in real-time. As an example, we focus on the quantum Haldane model, which is a two-band system with directional complex coupling terms, violating Newton's third law. We demonstrate that the required topological phase, characterized by chiral edge modes, can be achieved in an analogous mechanical system only with closed-loop control. We then show that our approach enables to realize, for the first time, a modified version of the Haldane model in a mechanical metamaterial. Here, the complex-valued couplings are polarized in a way that modes on opposite edges of a lattice propagate in the same direction, and are balanced by counter-propagating diffusive bulk modes. The proposed method is general and flexible, and could be used to realize arbitrary lattice parameters, such as non-local or nonlinear couplings, time dependent potentials, non-Hermitian dynamics, and more, on a single platform.
description: 4+ pages, plus supplemental material
The Effects of Television upon Junior High School Children in Arlington County
Creators: name: Gilman, Jeanne M.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: I. THE PROBLEMThere has been a vast amount of controversial opinion expressed in articles and editorials concerning both the harmful as well as the beneficial aspects of the television medium. Television has been accused of every conceivable detriment, even to the extent that it has contributed to juvenile delinquency. But on the other hand, it has been exalted as a possible educational supplement.Being a teacher, as well as a student of communication, the writer as become critically aware of the ambivalence of television.
Causal bounds for outcome-dependent sampling in observational studies
Creators: name: Gabriel, Erin E.
name: Sachs, Michael C.
name: Sjölander, Arvid
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Outcome-dependent sampling designs are common in many different scientific fields including epidemiology, ecology, and economics. As with all observational studies, such designs often suffer from unmeasured confounding, which generally precludes the nonparametric identification of causal effects. Nonparametric bounds can provide a way to narrow the range of possible values for a nonidentifiable causal effect without making additional untestable assumptions. The nonparametric bounds literature has almost exclusively focused on settings with random sampling, and the bounds have often been derived with a particular linear programming method. We derive novel bounds for the causal risk difference, often referred to as the average treatment effect, in six settings with outcome-dependent sampling and unmeasured confounding for a binary outcome and exposure. Our derivations of the bounds illustrate two approaches that may be applicable in other settings where the bounding problem cannot be directly stated as a system of linear constraints. We illustrate our derived bounds in a real data example involving the effect of vitamin D concentration on mortality.
description: 36 pages, 3 figures. Update to include revisions after peer review. In Press at the Journal of the American Statistical Association, Theory and methods
Additional file 5 of Gene targets for engineering osmotolerance in Caldicellulosiruptor bescii
Creators: name: Sander, Kyle B.
name: Daehwan Chung
name: Klingeman, Dawn M.
name: Giannone, Richard J.
name: Rodriguez, Miguel
name: Whitham, Jason
name: Hettich, Robert L.
name: Davison, Brian H.
name: Westpheling, Janet
name: Brown, Steven D.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5: Table S1. Primers used in this study.
Super D-branes from BRST Symmetry
Creators: name: Anguelova, Lilia
name: Grassi, Pietro A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently a new formalism has been developed for the covariant quantization of superstrings. We study properties of Dp-branes and p-branes in this new framework, focusing on two different topics: effective actions and boundary states for Dp-branes. We present a derivation of the Wess-Zumino terms for super (D)p-branes using BRST symmetry. To achieve this we derive the BRST symmetry for superbranes, starting from the approach with/without pure spinors, and completely characterize the WZ terms as elements of the BRST cohomology. We also develope the boundary state description of Dp-branes by analyzing the boundary conditions for open strings in the completely covariant (i.e., without pure spinors) BRST formulation.
description: 31 pp; journal version, expended discussion of D-brane pure spinor constraints in Section 2.3
AMS Sustainable Club Practices : Final Report
Creators: name: Wagih, Ali
name: Sun, Yu
name: Ade, Wemi
name: Khalifa, Ziad
name: Wang, Yanli
Publisher: name: The University of British Columbia
Year: 2018

description: The purpose of the Alma Matar Society (AMS) Club Operations project, in a general sense, is to reduce the ecological footprint of the campus. This is achieved by assessing the equipment and operations of two AMS clubs that are moving to the University of British Columbia (UBC) Life building/Old Sub, in the context of sustainability and waste disposal. These objectives are aligned with UBC sustainability goals and reference the Student Driven Sustainability Strategy (SDSS). The project seeks to identify the club practices and assess for possible areas of improvement, as well as identifying waste disposal bins’ locations. The main data collection methods used are hosting focus group interviews and conducting site visits. Ultimately, a comprehensive list of recommendations is presented at the end of the report based on the results of the investigation. The recommendations presented help indicate to the AMS where it should devote its limited money and time and are considered applicable to the other clubs that will be moving. 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.”
How to choose master integrals
Creators: name: Smirnov, A. V.
name: Smirnov, V. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The standard procedure when evaluating integrals of a given family of Feynman integrals, corresponding to some Feynman graph, is to construct an algorithm which provides the possibility to write any particular integral as a linear combination of so-called master integrals. To do this, public (AIR, FIRE, REDUZE, LiteRed, KIRA) and private codes based on solving integration by parts relations are used. However, the choice of the master integrals provided by these codes is not always optimal. We present an algorithm to improve a given basis of the master integrals, as well as its computer implementation; see also a competitive variant [1].
description: v3: minor corrections
Deltochilum hyypponum Buquet. Ucumari Regional Park
Creators: name: He, Tongli
name: Zhang, Runzhi
name: Frank W. Pelsue, Jr.
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Deltochilum
Deltochilum hyypponum

description: Deltochilum hyypponum Buquet. Ucumari Regional Park (48449N, 758369W), Dept.
Risaralda, Colombia. Could forest, 2,400 m. 29.III.95
 Feeding Observations. One individual was observed manipulating a 2.5 cm diameter ball of mammal fur.
Scarabaeidae: Scarabaeinae: Dichotomiini:
 Bdelyrus laplanadae Cook. La Planada Natural Reserve (18179N, 788159W), Dept. Nario, Colombia. Could forest, 1,800 m. 12.VI.94.
 Feeding Observations. Eight individuals were feeding on decayed fruit of Qouraribae (Bombacaceae) inside the forest. During an entire year (1993) of sampling in this locality only one individual was captured in pitfall traps baited with human excrement.
description: Published as part of He, Tongli, Zhang, Runzhi & Frank W. Pelsue, Jr., 2003, A New Species Of The Genus Allaeotes Pascoe From China (Coleoptera: Curculionidae: Dryophthorinae), pp. 127-131 in The Coleopterists Bulletin 57 (2) on pages 131-132, DOI: 10.1649/0010-065x(2003)057[0127:ansotg]2.0.co;2, http://zenodo.org/record/4924141
Knowledge Transfer between Buildings for Seismic Damage Diagnosis through Adversarial Learning
Creators: name: Xu, Susu
name: Noh, Hae Young
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Automated structural damage diagnosis after earthquakes is important for improving the efficiency of disaster response and rehabilitation. In conventional data-driven frameworks which use machine learning or statistical models, structural damage diagnosis models are often constructed using supervised learning. The supervised learning requires historical structural response data and corresponding damage states (i.e., labels) for each building to learn the building-specific damage diagnosis model. However, in post-earthquake scenarios, historical data with labels are often not available for many buildings in the affected area. This makes it difficult to construct a damage diagnosis model. Further, directly using the historical data from other buildings to construct a damage diagnosis model for the target building would lead to inaccurate results. This is because each building has unique physical properties and thus unique data distribution. To this end, we introduce a new framework to transfer the model learned from other buildings to diagnose structural damage states in the target building without any labels. This framework is based on an adversarial domain adaptation approach that extracts domain-invariant feature representations of data from different buildings. The feature extraction function is trained in an adversarial way, which ensures that the extracted feature distributions are robust to changes in structures while being predictive of the damage states. With the extracted domain-invariant feature representations, the data distributions become consistent across different buildings. We evaluate our framework on both numerical simulation and field data collected from multiple building structures, which outperforms the state-of-the-art benchmark methods.
Influence of organic and inorganic fertilizers on mineral nutrition of Stevia in different types of soil
Creators: name: Khanom, S.
name: Chowdhury, M. A. H.
name: Islam, M. T.
name: Saha, B. K.
name: Khanom, S.
name: Chowdhury, M. A. H.
name: Islam, M. T.
name: Saha, B. K.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Land Economics/Use
subject: Productivity Analysis
subject: Stevia
subject: Cowdung
subject: Poultry manure
subject: Fertilizer
subject: Nutrients

description: A pot culture experiment was conducted in a net-house of Bangladesh Agricultural University (BAU), Mymensingh from January to June 2007 to study the effect of organic and inorganic fertilizers on the nutrient contents and their uptake by Stevia rebaudiana (Bert.) grown in four types of soil. The soils were saline, acid, calcareous and non-calcareous in nature and they were collected from Khulna, Tangail, Natore and Mymensingh districts, respectively. There were four fertilizer treatments viz., 2 organic fertilizers (poultry manure and cowdung) and 1 inorganic fertilizer and a control were used. The rate of poultry manure and cowdung was 5 t ha-1 and the fertilizer nutrients viz., N, P, K and S were applied at the rate of 120, 24, 80 and 20 kg ha-1, respectively. The experiment was laid out following completely randomized design with 16 treatments and three replications. The concentration and uptake of various nutrients (N, P, K, S, Ca & Mg) in stevia leaves varied with different types of soil. Generally the highest values were recorded with the plants grown in non-calcareous soil and lowest in saline soil. Concerning fertilizer treatments, the chemical fertilizer produced the highest contents of nutrients, however an identical result was obtained in cowdung treatment in most of the nutrients whereas the nutrients uptake were highest in plants treated with cowdung. Overall results suggest that stevia can be successfully grown in non-calcareous soil treated with chemical fertilizers or cowdung at the recommended rate.
A Search for Intraday Variability in the Blazar PKS 2005-489
Creators: name: Rector, T. A.
name: Perlman, E. S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Rapid, multi-color optical monitoring carried out for a multiwavelength campaign during 22-27 August 2000 is presented for the bright and variable BL Lac object PKS 2005-489. Previous multiwavelength monitoring campaigns of PKS 2005-489 have found complex variability behavior both in flux density and in broadband spectrum, with different modes and timescales from days to hours. During this campaign, PKS 2005-489 was observed to be in an unusual state, bright in the optical but faint in the X-ray, just prior to an X-ray flare that began on 2 September 2000. PKS 2005-489 was also observed to have a flatter optical spectrum than prior epochs. A linear increase in optical flux density was observed during the first 5.2 days of the campaign. However, intraday and color variability were not detected. The large discrepancy between the ratio of X-ray to optical flux density observed during this campaign and that observed in prior epochs indicates a lack of long-term correlation between the two wavebands; and it illustrates that simple particle injection events in the jet are insufficient to explain the long-term variability behavior of this object. Twenty-three in-field standard stars are identified for future optical monitoring programs.
description: Accepted, AJ
Relative Anomaly in (1+1)d Rational Conformal Field Theory
Creators: name: Cheng, Meng
name: Williamson, Dominic J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study 't Hooft anomalies of symmetry-enriched rational conformal field theories (RCFT) in (1+1)d. Such anomalies determine whether a theory can be realized in a truly (1+1)d system with on-site symmetry, or on the edge of a (2+1)d symmetry-protected topological phase. RCFTs with the identical symmetry actions on their chiral algebras may have different 't Hooft anomalies due to additional symmetry charges on local primary operators. To compute the relative anomaly, we establish a precise correspondence between (1+1)d non-chiral RCFTs and (2+1)d doubled symmetry-enriched topological (SET) phases with a choice of symmetric gapped boundary. Based on these results we derive a general formula for the relative 't Hooft anomaly in terms of algebraic data that characterizes the SET phase and its boundary.
description: published version
Avian leukosis in chickens: retrospective histopathology and antibody prevalence in some selected layer farms
Creators: name: Islam, A.
name: Chowdhury, E. H.
name: Saha, S. S.
name: Islam, M. R.
name: Islam, A.
name: Chowdhury, E. H.
name: Saha, S. S.
name: Islam, M. R.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Health Economics and Policy
subject: Livestock Production/Industries
subject: Avian leucosis
subject: Antibody prevalence
subject: Histopathology

description: The aim of this study was retrospective histopathological on clinical samples and sero-prevalence of avian leukosis virus antibodies in layer farms were done. Histopathological samples (Liver) were preserved in 10% neutral buffered formalin and processed, embedded in paraffin, sectioned and stained using standard histopathological techniques. For ELISA, eggs (n=2) and blood samples ( (n=10) were collected antibody titre were measured by ELISA. Histopathological lesions of clinical samples were homogenous population of lymphoblasts appeared as either nodular or diffuse form with numerous mitotic figures, displacement and compression of the hepatic parenchyma by the accumulation of large number of neoplastic lymphocytes. Among the 100 egg yolk samples, 43 samples were positive for antibodies to ALV. Among the 10 serum samples, 6 samples were positive for antibodies to ALV. Out of total 110 samples, 49 samples were positive. Overall prevalence of avian leukosis was 44.6%. Prevalence of 5 selected layer farm varied from 25% - 65%, and the height (60%) prevalence of antibodies to avian leukosis of BAU Poultry Farm.