cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Comments on $η$-deformed principal chiral model from 4D Chern-Simons theory
Creators: name: Fukushima, Osamu
name: Sakamoto, Jun-ichi
name: Yoshida, Kentaroh
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study $η$-deformations of principal chiral model (PCM) from the viewpoint of a 4D Chern-Simons (CS) theory. The $η$-deformed PCM has originally been derived from the 4D CS theory by Delduc, Lacroix, Magro and Vicedo [arXiv:1909.13824]. The derivation is based on a twist function in the rational description. On the other hand, we start with a twist function in the trigonometric description and discuss possible boundary conditions. We show that a certain boundary condition reproduces the usual $η$-deformed PCM and another one leads to a new kind of Yang-Baxter deformation.
description: 45 pages, 1 figure: minor modifications, further clarifications and references added. Matches the published version in NPB
Dynamical symmetry breaking in Gauge-Higgs unification on orbifold
Creators: name: Haba, Naoyuki
name: Hosotani, Yutaka
name: Kawamura, Yoshiharu
name: Yamashita, Toshifumi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the dynamical symmetry breaking in the gauge-Higgs unification of the 5D theory compactified on an orbifold, $S^1/Z_2$. This theory identifies Wilson line degrees of freedoms as ``Higgs doublets''. We consider $SU(3)_c \times SU(3)_W$ and SU(6) models with the compactification scale of order a few TeV. The gauge symmetries are reduced to $SU(3)_c \times SU(2)_L \times U(1)_Y$ and $SU(3)_c \times SU(2)_L \times U(1)_Y \times U(1)$, respectively, through the orbifolding boundary conditions. We estimate the one loop effective potential of ``Higgs doublets'', and find that the electro-weak breaking is realized through the radiative corrections when there are suitable numbers of bulk fields possessing the suitable representations. The masses of ``Higgs doublets'' are ${\mathcal O}(100)$ GeV in this scenario.
description: 18 pages, 8 figures;note added
Nonlocal mixing of supercurrents in Josephson ballistic point contact
Creators: name: Kolesnichenko, Yu. A.
name: Omelyanchouk, A. N.
name: Shevchenko, S. N.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study coherent current states in the mesoscopic superconducting weak link simultaneously subjected to the order parameter phase difference on the contact and to the tangential to the junction interface superfluid velocity in the banks. The Josephson current-phase relation controlled by the external transport current is obtained. At phase difference close to pi the nonlocal nature of the Josephson phase-dependent current results in the appearance of two vortexlike states in the vicinity of the contact.
description: 4 pages, 6 figures; to be published in Phys. Rev. B; e-mail: omelyanchouk@ilt.kharkov.ua
Topological phase transitions in liquid crystals -- Transiciones de fase topológicas en cistales l{'ı}quidos
Creators: name: Paredes, V. Ricardo
name: Fariñas-Sánchez, Ana I.
name: Berche, Bertrand
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: By means of Monte Carlo simulations, using finite size scaling and conformal transformations, evidences of a topological phase transition in liquid crystals in two dimensions are reported. A paramagnetic phase appears at high temperature whereas a quasi-long-range-order (QLRO) phase is founded at low temperatures. It is determined that the correlation function exponent, at very low temperatures, is linear with the temperature, a typical behavior of spin waves. This contradicts predictions that for systems with non-abelian group of global symmetry the spin waves are not relevant. Aditionally, the implications that would have the presence of impurities in this type of transitions is discussed. ----- Mediante simulaciones de Monte Carlo, utilizando escalamiento de tamaño finito y transformaciones conforme, se reportan evidencias de una transición de fase topológica en cristales l{\'ı}quidos en dos dimensiones. A altas temperaturas se presenta una fase paramagnética mientras que a bajas temperaturas se encuentra un fase de cuasi-largo-orden (QLRO). Se encuentra que a muy bajas temperaturas el exponente de la función de correlación de la fase QLRO es lineal con la temperatura teniéndose de esta manera un comportamiento t{\'ı}pico de ondas de esp{\'ı}n. Esto último contradice predicciones de que para sistemas con grupo de simetr{\'ı}a global no abeliano las ondas de esp{\'\}n no son relevantes. Adicionalmente se discute que implicaciones tendr{\'ı}a la presencia de impurezas en este tipo de transiciones.
description: 5 pages, 2 figures, in spanish
title: Issues Of Interaction: A Consideration Of Factors That Impact Upon Children Operating, In Junior Classrooms, As Reflective Practitioners In The Context Of Group-Based Practical Problem Solving Activities
Creators: name: Newcomb, James William
Publisher: name: The Open University
Year: 2004

description: This thesis sets out to provide an insight into a range of factors which have been observed to impact upon the extent to which junior aged children, engaged in group-based practical problem solving activities, operate as reflective practitioners - essentially, as reasoned decision makers. It offers a detailed rationale for both the focus of the research study - an examination of influences on young children as reflective practitioners and the qualitative methodology adopted. It also provides, as part of its data analysis (centred on verbal interaction between teacher and pupil(s) and amongst pupils themselves), conclusions and recommendations, suggestions of ways in which teachers might best support young children as reflective practitioners; in effect, by taking cognisance of, and acting upon, both the concerns (limitations) and positive aspects (best practice) identified and discussed within the text. As a consequence, it is hoped that teachers can develop a classroom culture where all players recognise that both ‘action’ and ‘reflection’ are essential and valued components of the effective management of practical problem-solving processes, and that a willingness on the part of pupils to ‘think’, before they ‘do’, supports the efficient development of an optimised, end product.

 The treatise is organised around an examination of the importance of four key issues: metacognitive questioning, task structuring, the effective management of collaborative endeavour and cognitive dissonance. These are shown to operate in an interrelated and complex manner, thereby highlighting the inherent difficulties in the proficient advancement of problem resolution by young children functioning in the context of group-based activities. In short, the complexities associated with securing the optimised solutions to problems in hand, noted above.
Amblyomma ovale
Creators: name: Basu, A. K.
name: Basu, M.
name: Adesiyun, A. A.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Ixodida
Ixodidae
Amblyomma
Amblyomma ovale

description: Amblyomma ovale
 Everard and Tikasingh (1973) and Smith (1974) recorded A. ovale from dogs. Dindial (1977) found A. ovale associated with hunting dogs at Sans Souci and Charlotteville, Trinidad.
 Distribution: Mexico to Argentina (Jones et al.
1972; Voltzit 2007).
description: Published as part of Basu, A. K., Basu, M. & Adesiyun, A. A., 2012, A Review On Ticks (Acari: Ixodoidea: Ixodidae, Argasidae), Associated Pathogens And Diseases Of Trinidad And Tobago, pp. 39-50 in Acarologia 52 (1) on page 44, DOI: 10.1051/acarologia/20122034, http://zenodo.org/record/4667077
ANTITRUST POLICY
Creators: name: Cotterill, R. W.
name: Brock, J. W.
name: Cotterill, R. W.
name: Brock, J. W.
Publisher: name: Unknown
Year: 1993
Subjects: Financial Economics
Institutional and Behavioral Economics

description: Antitrust policy and the economic analysis of related issues in the food channel have attracted the attention of agricultural economists since the passage of the Sherman Antitrust Act in 1890. In this paper we endeavor to provide some information on the actual operation of antitrust policies in the food system and the more general economy during the 1980's. Mergers and acquisitions restructured many American industries during the decade. This review of actual conduct is a fitting prologue for our subsequent discussion of the federal merger guidelines and federal policy on price discrimination. Thus, this paper is organized into two sections. The first section reviews actual antitrust and merger activity during the 1980's. The second section provides a review of the recent federal merger guidelines and the evolution of the price discrimination laws.
MARKETING ORDERS
Creators: name: Armbruster, Walter J.
name: Christ, Paul G.
name: Jesse, Edward V.
name: Armbruster, Walter J.
name: Christ, Paul G.
name: Jesse, Edward V.
Publisher: name: Unknown
Year: 1993
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Marketing orders represent a policy for changing or affecting behavior in the marketing of fruit, vegetable and specialty crops or of milk. They alter the effective structure of the marketing system. These are long-standing programs, authorized in the Agricultural Marketing Agreement Act of 1937 and administered under an ongoing series of changing rules and regulations over the years. Many orders have been promulgated or amended since 1937. Regardless of the changes, many of the existing features are modifications of those originally included to deal with 1937 marketing system issues. Consolidation of orders, particularly for milk, and additions of new orders and termination of some existing orders for fruit, vegetable and specialty crops represent efforts to deal with structural change, business practices and competitive forces in the evolving marketing system over the years. Questions related to marketing orders and how effectively they serve their purposes to alter behavior in today's marketing system deserve attention. Competitive pressures and societal issues can impact the ability of marketing orders to accomplish their intended purposes.
Thermodynamics of a Quantum Annealer
Creators: name: Buffoni, Lorenzo
name: Campisi, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The D-wave processor is a partially controllable open quantum system which exchanges energy with its surrounding environment (in the form of heat) and with the external time dependent control fields (in the form of work). Despite being rarely thought as such, it is a thermodynamic machine. Here we investigate the properties of the D-Wave quantum annealers from a thermodynamical perspective. We performed a number of reverse-annealing experiments on the D-Wave 2000Q via the open access cloud server Leap, with the aim of understanding what type of thermal operation the machine performs, and quantifying the degree of dissipation that accompanies it, as well as the amount of heat and work that it exchanges. The latter is a challenging task in view of the fact that one can experimentally access only the overall energy change occurring in the processor, (which is the sum of heat and work it receives). However, recent results of non-equilibrium thermodynamics(namely, the fluctuation theorem and the thermodynamic uncertainty relations), allow to calculate lower bounds on the average entropy production (which quantifies the degree of dissipation) as well as the average heat and work exchanges. The analysis of the collected experimental data shows that 1) in a reverse annealing process the D-Wave processor works as a thermal accelerator and 2) its evolution involves an increasing amount of dissipation with increasing transverse field.
description: 6 pages, 7 figures
On Some Geometrical Aspects of Space-Time Description and Relativity
Creators: name: Dahm, Rolf
Publisher: name: arXiv
Year: 2020
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: In order to ask for future concepts of relativity, one has to build upon the original concepts instead of the nowadays common formalism only, and as such recall and reconsider some of its roots in geometry. So in order to discuss 3-space and dynamics, we recall briefly Minkowski's approach in 1910 implementing the nowadays commonly used 4-vector calculus and related tensorial representations as well as Klein's 1910 paper on the geometry of the Lorentz group. To include microscopic representations, we discuss few aspects of Wigner's and Weinberg's 'boost' approach to describe 'any spin' with respect to its reductive Lie algebra and coset theory, and we relate the physical identification to objects in $P^{5}$ based on the case $(1,0)\oplus(0,1)$ of the electromagnetic field. So instead of following this -- in some aspects -- special and misleading 'old' representation theory, based on 4-vector calculus and tensors, we provide and use an alternative representation based on line geometry which -- besides comprising known representation theory -- is capable of both describing (classical) projective geometry of 3-space as well as it yields spin matrices and the classical Lie transfer. In addition, this geometry is capable of providing a more general route to known Lie symmetries, especially of the su(2)$\oplus$i~su(2) Lie algebra of special relativity, as well as it comprises gauge theories and affine geometry. Thus it serves as foundation for a future understanding of more general representation theory of relativity based, however, on roots known from classical projective geometry and $P^{5}$. As an application, we discuss Lorentz transformations in point space in terms of line and Complex geometry, where we can identify them as...
description: 42 pages, 11 figures. Contribution, submitted for book publication (ed. V. Dvoeglazov)
Crossed Andreev reflection as a probe for the pairing symmetry of Ferromagnetic Superconductors
Creators: name: Benjamin, Colin
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The coexistence of superconductivity and ferromagnetism has brought about the phenomena of ferromagnetic superconductors. The theory needed to understand the compatibility of such antagonistic phenomena cannot be built until the pairing symmetry of such superconductors is correctly identified. The proper and unambiguous identification of the pairing symmetry of such superconductors is the subject of this paper. This work shows that crossed Andreev reflection can be a very effective tool in order to identify the pairing symmetry of these superconductors.
description: 5 pages, 1 figure, 1 table. Accepted for publication in Phys. Rev. B(Rapid Communication)
Antitumor effect of Cymbopogon densiflorus (Linneu) essential oil in bladder cancer cells
Creators: name: Gizele Lucia Da Costa Pereira
name: Tamires Cunha Almeida
name: Janaina Brandão Seibert
name: Tatiane Roquete Amparo
name: Soares, Rodrigo Dian De Oliveira Aguiar
name: Ivanildes Vasconcelos Rodrigues
name: Souza, Gustavo Henrique Bianco De
name: Santos, Orlando David Henrique Dos
name: Silva, Glenda Nicioli Da
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: The aim of this study was to analyse the antitumor effect of the Cymbopogon densiflorus essential oil in silico and in vitro on bladder cancer cells RT4 and T24, with different TP53 status. The oil was extracted by hydrodistillation and the gas chromatography coupled to the mass spectrometry was used for characterisation. In silico analysis was carried out by Pass online software. Cytotoxicity, cell proliferation, cell cycle progression, apoptosis and wound healing assays were performed. Five major compounds were identified. In silico analysis showed that major compounds present high potential for antitumor activities. The treatment with C. densiflorus essential oil reduced cell viability of bladder cancer cells. Only in wild-type cells, the increase of apoptosis rates and the decrease of cell migration were observed. In conclusion, the C. densiflorus essential oil presents antitumor effects on TP53 wild-type and mutated bladder cancer cells, however, the mechanism of action is TP53 status-dependent.
$γ^* N \rightarrow Δ^{+}(1600)$ transition form factors in light-cone sum rules
Creators: name: Aliev, T. M.
name: Barakat, T.
name: Bilmis, S.
name: Savci, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The form factors of $γ^* N \rightarrow Δ(1600)$ transition is calculated within the light-cone sum rules assuming that $Δ^+(1600)$ is the first radial excitation of $Δ(1232)$. The $Q^2$ dependence of the magnetic dipole $\tilde{G}_M(Q^2)$, electric quadrupole $\tilde{G}_E(Q^2)$, and Coulomb quadrupole $\tilde{G}_c(Q^2)$ form factors are investigated. Moreover, the $Q^2$ dependence of the ratios $R_{EM} = -\frac{\tilde{G}_E(Q^2)}{\tilde{G}_M{Q^2}}$ and $R_{SM} = - \frac{1}{4 m_{Δ(1600)}^2} \sqrt{4 m_{Δ(1600)}^2 Q^2 + (m_{Δ(1600)}^2 - Q^2 - m_N^2)^2} \frac{\tilde{G}_c(Q^2)}{\tilde{G}_M(Q^2)}$ are studied. Finally, our predictions on $\tilde{G}_M(Q^2)$, $\tilde{G}_E(Q^2)$, and $\tilde{G}_C(Q^2)$ are compared with the results of other theoretical approaches.
description: 19 pages, 5 figures
Temporally resolved LEIS measurements of Cr segregation after preferential sputtering of WCrY alloy
Creators: name: Koslowski, Hans Rudolf
name: Schmitz, Janina
name: Linsmeier, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dynamic behaviour of thermally driven segregation of Cr to the surface of WCrY smart alloy is studied with low energy ion scattering (LEIS). Sputtering the WCrY sample with 500 eV D$_2^+$ ions at room temperature results in preferential removal of the lighter alloy constituents and causes an almost pure W surface layer. At elevated temperatures above 700 K the segregation of Cr atoms towards the surface sets in and prevents the formation of a pure W layer. The simultaneous heating and sputtering of the sample leads to a surface state which reflects the balance between sputter removal and segregation flux, and deviates from the equilibrium due to thermally driven segregation. Stopping the sputter ion beam allows the system to relax and develop toward the segregation equilibrium. The time constants for the temporal changes of W and Cr surface coverage are obtained from a series of LEIS measurements. The segregation enthalpy is determined from the time constants obtained for various sample temperatures.
description: 20 pages, 4 figures, Proceedings of the 23rd International Workshop on Inelastic Ion-Surface Collisions (IISC-23), submitted to Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Rethinking the Role of Government in the Future Agri-Food System
Creators: name: Caswell, Julie A.
name: Caswell, Julie A.
Publisher: name: Unknown
Year: 1996
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business

description: The original motivation for this paper grew out of the Food and Agricultural Marketing Consortium's recognition that 1996 marks the fiftieth anniversary of the Agricultural Marketing Act of 1946, a sweeping piece of legislation that forms a major underpinning for government activities to promote agricultural marketing in the United States. More broadly, the Consortium recognized that much of domestic food and agricultural marketing policy and many of our institutions date back even further to the 1920s and 1930s and have been recently viewed as outmoded to various degrees by different people. The Consortium posed the question: What set of government policies fits the current and future agri-food system? Another way to state this question is to ask what set of marketing policies for the agrifood system is in the public interest? The question is one of optimal policy design, if such a thing can be effectively defined. Identifying the set of policies that fits current and future conditions is a formidable task, requiring as it does the consideration of how markets are operating and how they are likely to change in the future. The most difficult aspect of the task, however, is considering: 1) to which performance standards to which we wish to hold the agri-food system, 2) to what degree is some notion of fairness part of those standards, and, 3) if fairness is important, what standard of fairness should we use? Valuable treatises have been written on these subjects. However, I propose to talk about them more informally. In a session on marketing orders at the Consortium's 1994 meeting, Gary Fairchild posed the questions in this form: If we did not have marketing orders today, would we want them and propose them? Could we get them approved? The second question is especially timely since the relative size of the agricultural sector is now smaller than when many of the programs were originally passed. My purpose here is to address the questions posed above for all types of marketing policy.
A simple multi-player video game framework for experimenting and teaching cultural understanding
Creators: name: Jamieson, Peter
name: Grace, Lindsay D.
name: Mizuno, Naoki
name: Bell, Chris
name: Davis, Darrell
Publisher: name: Miami University
Year: 2023
Subjects: classificationCode: 4607
subject: Graphics, augmented reality and games

description: We have created a game called Culture Code that allows researchers and teachers to host online games where teams have asynchronous abilities. Inspired by the game Barnga [11], which is designed to explore factors related to communication problems in intercultural situations, our game, Culture Code, takes Barnga's basic mechanics and extends them. In Barnga, some players enter a game where they do not know the game rules resulting in a disadvantage compared to others who already know the rules. This mechanic is meant to simulate the disadvantages of someone entering a culture where the rules aren't explained. We extend this idea into out frame-work in which players are divided into teams, and each team's capabilities can be uniquely defined. This framework can be used to create a wide variety of scenarios to facilitate experiments and teaching points related to cultural advantages and disadvantages.
Generalized Analysis of Weakly-Interacting Massive Particle Searches
Creators: name: Kurylov, Andriy
name: Kamionkowski, Marc
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We perform a generalized analysis of data from WIMP search experiments for point-like WIMPs of arbitrary spin and general Lorenz-invariant WIMP-nucleus interaction. We show that in the non-relativistic limit only spin-independent (SI) and spin-dependent (SD) WIMP-nucleon interactions survive, which can be parameterized by only five independent parameters. We explore this five-dimensional parameter space to determine whether the annual modulation observed in the DAMA experiment can be consistent with all other experiments. The pure SI interaction is ruled out except for very small region of parameter space with the WIMP mass close to 50 GeV and the ratio of the WIMP-neutron to WIMP-proton SI couplings $-0.77\le f_n/f_p\le -0.75$. For the predominantly SD interaction, we find an upper limit to the WIMP mass of about 18 GeV, which can only be weakened if the constraint stemming from null searches for energetic neutrinos from WIMP annihilation the Sun is evaded. None of the regions of the parameter space that can reconcile all WIMP search results can be easily accommodated in the minimal supersymmetric extension of the standard model.
description: 27 pages, 3 figures
Investigation of the antimicrobial properties of nanoclay and chitosan based nanocomposite on the microbial characteristics of Gouda cheese
Creators: name: Mohammadi, Ali
Publisher: name: figshare
Year: 2020
Subjects: subject: 100703 Nanobiotechnology
subject: FOS: Nanotechnology
subject: 100707 Nanomanufacturing
subject: 100708 Nanomaterials

description: Background and Objectives: In recent years, active packaging has been introduced as a new method to better preserve food. Chitosan and nanoclay have been used for preparation of an active nanocomposite with respect to their antimicrobial properties to investigate its effects on the microbial limitation in Gouda cheese.
Materials and Methods: Nanoclay film, chitosan film, chitosan-based nanocomposites and nanoclay-based nanocomposites were prepared and their antimicrobial properties were evaluated to the microbial limitations of Gouda cheese consist of coliforms, Escherichia coli, Salmonella spp., coagulase-positive Staphylococcus, mold and yeast by agar diffusion method.
Results: The results indicated, the best antimicrobial effect belonged to nanocomposite film with the composition of chitosan 3 wt% by adding nanoclay 1 wt%, which can prevent microbial characteristics of Gouda cheese.
Conclusion: The chitosan and nanoclay nanocomposite had excellent antibacterial activity and performed well against
microbial limitations (coliforms, E. coli, Salmonella spp., coagulase-positive Staphylococcus, mold and yeast) of Gouda cheese. Therefore, the nanocomposite may be possibly used as a surface coating in addition to Gouda cheese as well as similar cheeses and other food to enhance microbial characteristics and extend shelf life.
On the design of multiple-relay cooperative MIMO networks with partial channel state information
Creators: name: Darsena, Donatella
name: Gelli, Giacinto
name: Verde, Francesco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper deals with the problem of jointly designing the source precoder, the relaying matrices, and the destination equalizer in a multiple-relay amplify-and-forward (AF) cooperative multiple-input multiple-output (MIMO) wireless network, when partial channel-state information (CSI) is available. Specifically, the considered approaches are based on the knowledge of instantaneous CSI of the first-hop channel matrix, whereas only statistical CSI of the second-hop channels is assumed. In such a scenario, with respect to the case when instantaneous CSI of both the first- and second-hop MIMO channel matrices is exploited, existing network designs exhibit a significant performance degradation. Relying on a relaxed minimum-mean-square-error (MMSE) criterion, we show that the design based on the potential activation of all possible antennas for all available AF relays leads to a mathematically intractable optimization problem. Therefore, we develop a joint relay-and-antenna selection procedure that determines the best subset of the available antennas possibly belonging to different relays. Monte Carlo simulations show that, compared to designs based on the selection of the best relay, the proposed strategy offers a significant performance gain, by also outperforming other recently proposed relay/antenna selection schemes.
description: 10 pages, 6 figures, accepted for publication in IEEE Access
Space Robotics versus Humans in Space_IIT Kharagpur.pdf
Creators: name: Aloor, Jasmine Jerry
name: Sajeev, Shilpa
name: Ayushi Shakya
Publisher: name: figshare
Year: 2020
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Space Science

description: Conference paper for the Students' Session on the first IAA-ISRO-ASI Symposium on Human Spaceflight Programme held on January 22-24, 2020 in Bangalore, India. This paper explores the debate of Humans vs Robots for space exploration by reviewing the development that has happened in both the fields. This is followed by an analysis of the scientific output, cost, efficiency and safety of both sides. Impact on the nascent, but all set to grow space economy is also considered. It is concluded that the debate was unnecessary as they both serve different and complementary purposes. The ideal scenario of a marriage of both has been proposed and an action plan for the future of spaceflight is presented. Suggestions include policy decisions as well as recommending areas of importance to inspire future generations.
Photochemical dynamics under incoherent illumination: light harvesting in self-assembled molecular J-aggregates
Creators: name: Morales-Curiel, Luis Felipe
name: León-Montiel, Roberto de J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Transport phenomena in organic, self-assembled molecular J-aggregates have long attracted a great deal of attention due to its potential role in designing novel organic photovoltaic devices. A large number of theoretical and experimental studies have been carried out describing excitonic energy transfer in J-aggregates under the assumption that excitons are induced by a coherent laser-light source or initialized by a localized excitation on a particular chromophore. However, these assumptions may not provide an accurate description to assess the efficiency of J-aggregates, particularly as building blocks of organic solar cells. In natural conditions, J-aggregates would be subjected to an incoherent source of light (as is sunlight), which would illuminate the whole photosynthetic complex rather than a single molecule. In this work, we present the first study of the efficiency of photosynthetic energy transport in self-assembled molecular aggregates under incoherent sunlight illumination. By making use of a minimalistic model of a cyanine dye J-aggregate, we demonstrate that long-range transport efficiency is enhanced when exciting the aggregate with incoherent light. Our results thus support the conclusion that J-aggregates are indeed excellent candidates for devices where efficient long-range incoherently-induced exciton transport is desired, such as in highly efficient organic solar cells.
Do it in the dark : energy competitions as an effective means of student engagement around energy consumption
Creators: name: Runkle, Quinn
Publisher: name: The University of British Columbia
Year: 2012

description: Energy competitions have been identified in the post secondary sphere as an effective means of instilling behaviour changes among students. The Do It in the Dark competition in the University of British Columbia‟s Totem Park residence did just that, reducing overall energy consumption by 16.3%. Do It in the Dark took place November 1-19, 2010 and combined an inter-house competition with an inter-university competition as a part of the Campus Conservation Nationals. This competition was an effective means of instilling better energy consumption habits among the student body. This report describes, in detail, the best practices of Totem Park‟s Do It in the Dark competition and will serve as a template to help replicate its success in future competitions.[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.”]
The observation of vibrating pear shapes in radon nuclei: update
Creators: name: Butler, P. A.
name: Gaffney, L. P.
name: Spagnoletti, P.
name: Konki, J.
name: Scheck, M.
name: Smith, J. F.
name: Abrahams, K.
name: Bowry, M.
name: Cederkäll, J.
name: Chupp, T.
name: De Angelis, G.
name: De Witte, H.
name: Garrett, P. E.
name: Goldkuhle, A.
name: Henrich, C.
name: Illana, A.
name: Johnston, K.
name: Joss, D. T.
name: Keatings, J. M.
name: Kelly, N. A.
name: Komorowska, M.
name: Kröll, T.
name: Lozano, M.
name: Singh, B. S. Nara
name: O'Donnell, D.
name: Ojala, J.
name: Page, R. D.
name: Pedersen, L. G.
name: Raison, C.
name: Reiter, P.
name: Rodriguez, J. A.
name: Rosiak, D.
name: Rothe, S.
name: Seidlitz, M.
name: Shneidman, T. M.
name: Siebeck, B.
name: Sinclair, J.
name: Stryjczyk, M.
name: Van Duppen, P.
name: Vinals, S.
name: Virtanen, V.
name: Warr, N.
name: Wrzosek-Lipska, K.
name: Zielińska, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: There is a large body of evidence that atomic nuclei can undergo octupole distortion and assume the shape of a pear. This phenomenon is important for measurements of electric-dipole moments of atoms, which would indicate CP violation and hence probe physics beyond the standard model of particle physics. Isotopes of both radon and radium have been identified as candidates for such measurements. Here, we have observed the low-lying quantum states in $^{224}$Rn and $^{226}$Rn by accelerating beams of these radioactive nuclei. We report here additional states not assigned in our 2019 publication. We show that radon isotopes undergo octupole vibrations but do not possess static pear-shapes in their ground states. We conclude that radon atoms provide less favourable conditions for the enhancement of a measurable atomic electric-dipole moment.
description: Updated from Nat. Comm. 10 (2019) 2473
A Method of Constructing Off-Diagonal Solutions in Metric-Affine and String Gravity
Creators: name: Vacaru, Sergiu I.
name: Gaburov, Evghenii
name: Gontsa, Denis
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The anholonomic frame method is generalized for non--Riemannian gravity models defined by string corrections to the general relativity and metric-affine gravity (MAG) theories. Such spacetime configurations are modeled as metric-affine spaces provided with generic off-diagonal metrics (which can not be diagonalized by coordinate transforms) and anholonomic frames with associated nonlinear connection (N-connection) structure. We investigate the field equations of MAG and string gravity with mixed holonomic and anholonomic variables. There are proved the main theorems on irreducible reduction to effective Einstein-Proca equations with respect to anholonomic frames adapted to N-connections. String corrections induced by the antisymmetric H-fields are considered. There are also proved the theorems and criteria stating a new method of constructing exact solutions with generic off-diagonal metric ansatz depending on 3-5 variables and describing various type of locally anisotropic gravitational configurations with torsion, nonmetricity and/or generalized Finsler-affine effective geometry. We analyze solutions, generated in string gravity, when generalized Finsler-affine metrics, torsion and nonmetricity interact with three dimensional solitons.
description: Latex2e, 51 pages, v2 with grammar corrections
A simple multi-player video game framework for experimenting and teaching cultural understanding
Creators: name: Jamieson, Peter
name: Grace, Lindsay D.
name: Mizuno, Naoki
name: Bell, Chris
name: Davis, Darrell
Publisher: name: American University
Year: 2023

description: We have created a game called Culture Code that allows researchers and teachers to host online games where teams have asynchronous abilities. Inspired by the game Barnga [11], which is designed to explore factors related to communication problems in intercultural situations, our game, Culture Code, takes Barnga's basic mechanics and extends them. In Barnga, some players enter a game where they do not know the game rules resulting in a disadvantage compared to others who already know the rules. This mechanic is meant to simulate the disadvantages of someone entering a culture where the rules aren't explained. We extend this idea into out frame-work in which players are divided into teams, and each team's capabilities can be uniquely defined. This framework can be used to create a wide variety of scenarios to facilitate experiments and teaching points related to cultural advantages and disadvantages.
Did you see that? In-game advertising retention in players and onlookers
Creators: name: Grace, Lindsay
name: Janssen, Dirk P.
name: Coyle, James R.
Publisher: name: American University
Year: 2023

description: The effects of embedding advertising in digital games has been explored in only a few controlled studies. This research provides results of an efficacy analysis of in-game advertising within the controlled environment of a racing car game, an environment in which advertising blends in naturally. The experiment was designed to understand the effectiveness of in-game advertising for both players and onlookers. Examining players in both Europe and the United States, this study measured how in-game advertising works on those who participate in electronic entertainment and those who watch it. The results indicate that such advertising is more effective for onlookers than for players. Implications for designers and researchers is discussed.
Diffractive processes at the LHC within kt -factorization approach
Creators: name: Luszczak, Marta
name: Szczurek, Antoni
name: Luszczak, Marta
name: Szczurek, Antoni
Publisher: name: Unknown
Year: 2017
Subjects: Research and Development/Tech Change/Emerging Technologies

description: We discuss the single diffractive production of cc¯ pairs and charmed mesons at the LHC. In addition to standard collinear approach, for a first time we propose a kt-factorization approach to the diffractive processes. The transverse momentum dependent (the unintegrated diffractive parton distributions) in proton are obtained with the help of the Kimber-Martin-Ryskin prescription where collinear diffractive PDFs are used as input. In this calculation the transverse momentum of the pomeron is neglected with respect to transverse momentum of partons entering the hard process. The results of the new approach are compared with those of the standard collinear one. Significantly larger cross sections are obtained in the kt-factorization approach where some part of higher-order effects is effectively included. Some correlation observables, like azimuthal angle correlation between c and c¯, and cc¯pair transverse momentum distribution were obtained for the first time.
Did you see that? In-game advertising retention in players and onlookers
Creators: name: Grace, Lindsay
name: Janssen, Dirk P.
name: Coyle, James R.
Publisher: name: Association for Computing Machinery
Year: 2023
Subjects: classificationCode: 4607
subject: Graphics, augmented reality and games

description: The effects of embedding advertising in digital games has been explored in only a few controlled studies. This research provides results of an efficacy analysis of in-game advertising within the controlled environment of a racing car game, an environment in which advertising blends in naturally. The experiment was designed to understand the effectiveness of in-game advertising for both players and onlookers. Examining players in both Europe and the United States, this study measured how in-game advertising works on those who participate in electronic entertainment and those who watch it. The results indicate that such advertising is more effective for onlookers than for players. Implications for designers and researchers is discussed.
Threshold Resummation for Higgs Production in Effective Field Theory
Creators: name: Idilbi, Ahmad
name: Ji, Xiangdong
name: Ma, Jian-Ping
name: Yuan, Feng
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an effective field theory to resum the large double logarithms originated from soft-gluon radiations at small final-state hadron invariant masses in Higgs and vector boson (γ^*, $W$ and $Z$) production at hadron colliders. The approach is conceptually simple, indepaendent of details of an effective field theory formulation, and valid to all orders in sub-leading logarithms. As an example, we show the result of summing the next-to-next-to-next leading logarithms is identical to that of standard pQCD factorization method.
description: A version to appear in Phys. Rev. D
Revealing carbon in Hampton Place
Creators: name: Chow, Laiyi
name: Jonat, Barry
name: Lewynsky, Martin
Publisher: name: The University of British Columbia
Year: 2014

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
New exact solutions of hydrodynamics for rehadronizing reballs with lattice QCD equation of state
Creators: name: Csörgő, Tamás
name: Kasza, G.
name: Csörgő, Tamás
name: Kasza, G.
Publisher: name: Unknown
Year: 2017
Subjects: Research and Development/Tech Change/Emerging Technologies

description: We describe reballs that rehadronize from a perfectly uid quark matter to a chemically frozen, multi-component hadron gas. In the hydrodynamics of these reballs, we utilize the lattice QCD equation of state, however, we also apply non-relativistic kinematics for simplicity and clarity. Two new classes of exact, analytic solutions of reball hydrodynamics are presented: the rst class describes triaxially expanding, non-rotating ellipsoidal reballs, while the second class of exact solutions corresponds to spheroidally symmetric, rotating reballs. In both classes of solutions, we nd evidence for a secondary explosion, that happens just after hadrochemical freeze-out. A realistic, linear mass scaling of the slope parameters of the single particle spectra of various hadronic species is obtained analytically, as well as an also realistic, linear mass scaling of the inverse of the squared HBT radius parameters of the Bose-Einstein correlation functions.
Probing BFKL dynamics in Mueller-Navelet jet production at the LHC
Creators: name: Ducloué, B.
name: Szymanowski, L.
name: Wallon, S.
name: Ducloué, B.
name: Szymanowski, L.
name: Wallon, S.
Publisher: name: Unknown
Year: 2017
Subjects: Research and Development/Tech Change/Emerging Technologies

description: We review the results of our studies on the production of two jets with a large interval of rapidity at hadron colliders, which was proposed by Mueller and Navelet as a possible test of the high energy dynamics of QCD, within the next-to-leading logarithm framework. The application of the BrodskyLepage-Mackenzie procedure to fix the renormalization scale leads to a very good description of the available CMS data at the LHC for the azimuthal correlations of the jets. We show that the inclusion of next-to-leading order corrections to the jet vertex significantly reduces the importance of energymomentum non-conservation which is inherent to the BFKL approach, for an asymmetric jet configuration.
Mirage: a new iterative Map-Making code for CMB experiments
Creators: name: Yvon, D.
name: Mayet, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A major goal of CMB experiments is to obtain highly sensitive CMB maps in order to extract Spherical Harmonic Power Spectrum (SHPS) and cosmological parameters with unprecedented accuracy. We present a new map-making code (Mirage), based on a two-phase iterative algorithm, involving low frequency drift treatment, Butterworth high-pass filtering and conjugate gradient method. This work was strongly motivated by Archeops CMB experiment data analysis. We believe that Archeops was a good test bench for the future Planck Surveyor data analysis, and Mirage was designed in order to be used for Planck data processing with minimal work. A strong feature of Mirage is that it handles experimental problems in data, such as holes in data stream, bright sources, and galaxy side effects, without jeopardising speed. The other advantage is its processing speed, allowing to run Monte Carlo simulations of Archeops data processing on a single processor workstation overnight. Algorithms are explained. Systematic effects on SHPS are investigated on various simulated data, including typical Archeops observational systematics. This code is available at adress http://www-dapnia.cea.fr/Telechargement/ Preprint with full resolution figures is available at http://www-dapnia.cea.fr/Doc/Publications/Archives/dapnia-03-378.pdf
description: 11 pages, accepted in Astron. and Astrophysiscs
Orthogonally induced differentiation of stem cells for the pattering of vascularized organoids and bioprinted tissues - custom MATLAB code
Creators: name: Duenki, Tomoya
name: Lu, Aric
Publisher: name: Zenodo
Year: 2022

description: Custom written to analyze data generated for the publication Skylar-Scott et al, "Orthogonally induced differentiation of stem cells for the pattering of vascularized organoids and bioprinted tissues".
Effect of bulk inversion asymmetry on the Datta-Das transistor
Creators: name: Łusakowski, A.
name: Wróbel, J.
name: Dietl, T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A model of the Datta-Das spin field-effect transistor is presented which, in addition to the Rashba interaction, takes into account the influence of bulk inversion asymmetry of zinc-blende semiconductors. In the presence of bulk inversion asymmetry, the conductance is found to depend significantly on the crystallographic orientation of the channel. We determine the channel direction optimal for the observation of the Datta-Das effect in GaAs and InAs-based devices.
description: 4 pages, Revtex4, 4 EPS figures