cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Status and Performance of New Silicon Stripixel Detector for the PHENIX Experiment at RHIC: Beta Source, Cosmic-rays and Proton Beam at 120 GeV
Creators: name: Nouicer, Rachid
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We are constructing a Silicon Vertex Tracker detector (VTX) for the PHENIX experiment at RHIC. Our main motivation is to enable measurements of heavy flavor production (charm and beauty) in p+p, p+d and A+A collisions. Such data will illuminate the properties of the matter created in high-energy heavy-ion collisions. The measurements also will reveal the distribution of gluons in protons from p+p collisions. The VTX detector consists of four layers of barrel detectors and covers |eta|< 1.2, and almost a 2pi in azimuth. The inner two silicon barrels consist of silicon pixel sensors; their technology accords with that of the ALICE1LHCB sensor-readout hybrid. The outer two barrels are silicon stripixel detectors with a new "spiral" design, and a single-sided sensor with 2-dimensional (X, U) readout. In this paper, we describe the silicon stripixel detector and discuss its performance, including its response to electrons from a beta source (90Sr), muons from cosmic-rays, and a 120 GeV proton beam. The results from the proton beam demonstrate that the principle of two-dimensional position sensitivity based on charge sharing works; the signal-to-noise value is 10.4, the position resolution is 33.6 um for X-stripixel (35.2 um for U-stripixel), and the tracking efficiencies in the X- and U-stripixels are, over 98.9 +/- 0.2%. The stripixel detector within the VTX project is in the pre-production phase.
description: Accepted for publication in Journal of Instrumentation (JINST). Invited talk at Pixel 2008 International Workshop, September 23-26, 2008, Fermilab, Batavia, Illinois, U.S.A
The global flow state in a precessing cylinder
Creators: name: Giesecke, André
name: Vogt, Tobias
name: Pizzi, Federico
name: Kumar, Vivaswat
name: Gonzalez, Fernando Garcia
name: Gundrum, Thomas
name: Stefani, Frank
Publisher: name: arXiv
Year: 2024
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We examine the fluid flow forced by precession of a rotating cylindrical container using numerical simulations and experimental flow measurements with ultrasonic Doppler velocimetry (UDV). The analysis is based on the decomposition of the flow field into contributions with distinct azimuthal symmetry or analytically known inertial modes and the corresponding calculation of their amplitudes. We show that the predominant fraction of the kinetic energy of the precession-driven fluid flow is contained only within a few large-scale modes.
 The most striking observation shown by simulations and experiments is the transition from a flow dominated by large-scale structures to a more turbulent behaviour with the small-scale fluctuations becoming increasingly important. At a fixed rotation frequency (parametrized by the Reynolds number, ${\rm{Re}}$) this transition occurs when a critical precession ratio is exceeded and consists of a two-stage collapse of the directly driven flow going along with a massive modification of the azimuthal circulation (the zonal flow) and the appearance of an axisymmetric double-roll mode limited to a narrow range of precession ratios. A similar behaviour is found in experiments which make it possible to follow the transition up to Reynolds numbers of ${\rm{Re}}\approx 2\times 10^6$. We find that the critical precession ratio decreases with rotation, initially showing a particular scaling $\propto {\rm{Re}}^{-\frac{1}{5}}$ but developing an asymptotic behaviour for ${\rm{Re}}\gtrsim 10^5$ which might be explained by the onset of turbulence in boundary layers.
description: 2024, 29 pages, 16 figures, accepted for publication in Journal of Fluid Mechanics
2001 QR322: a dynamically unstable Neptune Trojan?
Creators: name: Horner, J.
name: Lykawka, P. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Since early work on the stability of the first Neptunian Trojan, 2001 QR322, suggested that it was a dynamically stable, primordial body, it has been assumed this applies to both that object, and its more recently discovered brethren. However, it seems that things are no longer so clear cut. In this work, we present the results of detailed dynamical simulations of the orbital behaviour of 2001 QR322. Using an ephemeris for the object that has significantly improved since earlier works, we follow the evolution of 19683 test particles, placed on orbits within the observational error ellipse of 2001 QR322's orbit, for a period of 1 Gyr. We find that majority of these "clones" of 2001 QR322 are dynamically unstable, exhibiting a near-exponential decay from both the Neptunian Trojan cloud (decay halflife ~550 Myr) and the Solar system (decay halflife ~590 Myr). The stability of the object within Neptune's Trojan cloud is found to be strongly dependent on the initial semi-major axis used, with those objects located at semimajor axis equal or greater than 30.30 AU being significantly less stable than those interior to this value, as a result of their having initial libration amplitudes very close to a critical threshold dividing regular and irregular motion, located at ~70-75 deg (full extent of angular motion). This result suggests that, if 2001 QR322 is a primordial Neptunian Trojan, it must be a representative of a population that was once significantly larger than that we see today, and adds weight to the idea that the Neptune Trojans may represent a significant source of objects moving on unstable orbits between the giant planets (the Centaurs).
description: 14 pages, 5 figures, MNRAS (in press)
Urban Sprawl in North of Bengaluru: A Straddle across Opportunities and Obstacles for Food Security
Creators: name: Udaykumar, M.S.
name: Basegowda, Umesh Kotrakere
name: Udaykumar, M.S.
name: Basegowda, Umesh Kotrakere
Publisher: name: Unknown
Year: 2021
Subjects: Food Security and Poverty
Community/Rural/Urban Development

description: Paper# 18892
Percolation transition in correlated hypergraphs
Creators: name: Bradde, Serena
name: Bianconi, Ginestra
Publisher: name: arXiv
Year: 2009
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Correlations are known to play a crucial role in determining the structure of complex networks. Here we study how their presence affects the computation of the percolation threshold in random hypergraphs. In order to mimic the correlation in real network, we build hypergraphs from a generalized hidden variable ensembles and we study the percolation transition by mapping this problem to the fully connected Potts model with heterogeneous couplings.
Pygmy dipole strength in 90Zr
Creators: name: Schwengner, R.
name: Rusev, G.
name: Tsoneva, N.
name: Benouaret, N.
name: Beyer, R.
name: Erhard, M.
name: Grosse, E.
name: Junghans, A. R.
name: Klug, J.
name: Kosev, K.
name: Lenske, H.
name: Nair, C.
name: Schilling, K. D.
name: Wagner, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The dipole response of the N=50 nucleus 90Zr was studied in photon-scattering experiments at the electron linear accelerator ELBE with bremsstrahlung produced at kinetic electron energies of 7.9, 9.0, and 13.2 MeV. We identified 189 levels up to an excitation energy of 12.9 MeV. Statistical methods were applied to estimate intensities of inelastic transitions and to correct the intensities of the ground-state transitions for their branching ratios. In this way we derived the photoabsorption cross section up to the neutron-separation energy. This cross section matches well the photoabsorption cross section obtained from (gamma,n) data and thus provides information about the extension of the dipole-strength distribution toward energies below the neutron-separation energy. An enhancement of E1 strength has been found in the range of 6 MeV to 11 MeV. Calculations within the framework of the quasiparticle-phonon model ascribe this strength to a vibration of the excessive neutrons against the N = Z neutron-proton core, giving rise to a pygmy dipole resonance.
description: 27 pages, 15 figures, to be published in PRC
Is Reduced Strontium Titanate a Semiconductor or a Metal?
Creators: name: Rodenbücher, Christian
name: Guguschev, Christo
name: Korte, Carsten
name: Bette, Sebastian
name: Szot, Kristof
Publisher: name: Basel : MDPI
Year: 2021
Subjects: subject: Insulator–metal transition
subject: Point defect chemistry
subject: Redox reactions
subject: Strontium titanate
subject: Thermal reduction
subject: 540

description: In recent decades, the behavior of SrTiO3 upon annealing in reducing conditions has been under intense academic scrutiny. Classically, its conductivity can be described using point defect chemistry and predicting n-type or p-type semiconducting behavior depending on oxygen activity. In contrast, many examples of metallic behavior induced by thermal reduction have recently appeared in the literature, challenging this established understanding. In this study, we aim to resolve this contradiction by demonstrating that an initially insulating, as-received SrTiO3 single crystal can indeed be reduced to a metallic state, and is even stable against room temperature reoxidation. However, once the sample has been oxidized at a high temperature, subsequent reduction can no longer be used to induce metallic behavior, but semiconducting behavior in agreement with the predictions of point defect chemistry is observed. Our results indicate that the dislocation-rich surface layer plays a decisive role and that its local chemical composition can be changed depending on annealing conditions. This reveals that the prediction of the macroscopic electronic properties of SrTiO3 is a highly complex task, and not only the current temperature and oxygen activity but also the redox history play an important role.
The Predictive Role of Caregiver’s Language in Child Development Outcomes in Rural China
Creators: name: GAO, Jingjing
name: Wang, Xu
name: Wang, Tianyi
name: Chen, Yuting
name: He, Yang
name: Liu, Chengfang
name: Luo, Renfu
name: Rozelle, Scott
name: GAO, Jingjing
name: Wang, Xu
name: Wang, Tianyi
name: Chen, Yuting
name: He, Yang
name: Liu, Chengfang
name: Luo, Renfu
name: Rozelle, Scott
Publisher: name: Unknown
Year: 2021
Subjects: Institutional and Behavioral Economics
Community/Rural/Urban Development

description: Paper# 18918
Utilizing AI models to optimize blended teaching effectiveness in college-level English education
Creators: name: Shi, Lizhen
name: Umer, Arshad Muhammad
name: Shi, Yanting
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Science Policy
subject: Mental Health

description: This paper proposes the adoption of AI technologies in higher education to support student learning. Using multi-modal blended learning theory and independent learning fundamental theory, the study explores the use of AI to evaluate and improve the effectiveness of blended teaching in college English courses. A new model of deep learning and a learning model of human job functions are proposed to explore the hybridization of college English education under the background of artificial intelligence. This study provides a road map for using AI in college-level English courses and offers valuable contributions to the field, including the proposed models of deep learning and human job functions which can be applied to other subjects and fields. By leveraging modern technologies such as cloud computing, big data, and AI. This study highlights the potential for educators to transform the way we teach and learn and improve the quality of education and support student success. Overall, this paper provides valuable insights for future research in the intersection of AI and education and emphasizes the importance of integrating technology in higher education to enhance the learning experience and meet the needs of modern students.
Patterns in a freshwater tussock sedge model
Creators: name: Hou, Xiaojie
name: Wang, Jinliang
name: Li, You
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Neuroscience
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: We study pattern formation mechanisms in a reaction diffusion model arising from the interactions between the tussock sedges and the wracks. We first show that the corresponding kinetic system has either a limit cycle or a heteroclinic orbit that connects the extinction state to the coexistent state. This implies that under different conditions, the tussock sedge grasses and the wracks coexist in a cyclic way, or settle down directly to the coexistent equilibrium state regardless of the spatial location. We then investigate the non-constant positive solutions of the corresponding elliptic system in a bounded region in Rn with zero flux boundary condition. We identify the above solutions as patterns. We find that the domain size, by various a priori estimates, the growth rate of the tussock sedge grasses, and the carrying capacity of land all contribute to the formation of patterns. By computing the Leray Schauder degree, we derive the conditions for the existence of the patterns.
CDM Accelerating Cosmology as an Alternative to LCDM model
Creators: name: Lima, J. A. S.
name: Jesus, J. F.
name: Oliveira, F. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A new accelerating cosmology driven only by baryons plus cold dark matter (CDM) is proposed in the framework of general relativity. In this model the present accelerating stage of the Universe is powered by the negative pressure describing the gravitationally-induced particle production of cold dark matter particles. This kind of scenario has only one free parameter and the differential equation governing the evolution of the scale factor is exactly the same of the $Λ$CDM model. For a spatially flat Universe, as predicted by inflation ($Ω_{dm}+Ω_{baryon}=1$), it is found that the effectively observed matter density parameter is $Ω_{meff} = 1- α$, where $α$ is the constant parameter specifying the CDM particle creation rate. The supernovae test based on the Union data (2008) requires $α\sim 0.71$ so that $Ω_{meff} \sim 0.29$ as independently derived from weak gravitational lensing, the large scale structure and other complementary observations.
description: 6 pages, 3 figures
Electroweak phase transition in an extension of the Standard Model with scalar color octet
Creators: name: Ham, S. W.
name: Shim, Seong-a
name: Oh, S. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In an extension of the Standard Model with a scalar color octet, the possibility of the strongly first-order electroweak phase transition is studied, by examining the finite-temperature effective Higgs potential at the one-loop level. It is found that there are wide regions in the parameter space that allow the strongly first-order electroweak phase transition, where the Higgs boson mass is larger than the experimental lower bound of 115 GeV, and the masses of the scalar color octet is around 200 GeV. The parameter regions may be explored at the LHC with respect to the electroweak phase transition.
description: 20 pages, 9 figures, PRD
Microvascular dysfunction and the development of muscle insulin resistance
Creators: name: Premilovac, Dino
Publisher: name: University Of Tasmania
Year: 2023

description: Defects in microvascular perfusion, which is important for nutrient exchange in skeletal muscle, contribute to insulin resistance associated with obesity and hypertension. One factor that may link this microvascular dysfunction in these conditions is the renin angiotensin system (RAS). The primary objective of this thesis was to address these issues using rat models of obesity and altered RAS activity. Two different models of insulin resistance were analysed for the involvement of microvascular dysfunction. Rats were fed either a high fat or a high salt diet for 4 weeks to develop insulin resistance. The hyperinsulinaemic, euglycaemic clamp and 1-methyl xanthine techniques were used to investigate insulin sensitivity and microvascular recruitment, respectively. Despite different origins of insulin resistance, both animal models had markedly impaired insulin-mediated microvascular recruitment in muscle. The contribution of increased angiotensin II (AngII) activity to microvascular dysfunction in both animal models was examined. Hindleg vascular AngII sensitivity (assessed using both the perfused rat hindlimb technique and locally infused AngII in vivo) was enhanced in the high salt but not the high fat-fed rat. Thus, although both models developed microvascular insulin resistance, only the high salt-fed rats exhibited increased vascular AngII activity. There is conflicting evidence as to whether RAS dysregulation also contributes to insulin resistance or type 2 diabetes associated with obesity. The obese Zucker rat (a model of type 2 diabetes) has impaired insulin-mediated microvascular recruitment, and has been reported to have a dysregulated RAS, but represents a later stage of insulin resistance than the high fat-fed rat. To determine whether RAS inhibition enhances insulin sensitivity, high salt-fed and obese Zucker rats were treated with an angiotensin converting enzyme inhibitor (quinapril) for 4 weeks. Inhibition of ACE significantly improved insulin sensitivity and augmented insulin-stimulated microvascular perfusion in high salt-fed rats, but not in obese Zucker rats. The data from this thesis demonstrate that the origin of microvascular insulin resistance is multifactorial. Dysregulation of the RAS is important in some but not all forms of microvascular insulin resistance. Therefore inhibition of RAS may not always be effective at treating insulin resistance and may only be beneficial during earlier stages of insulin resistance rather than later stages such as type 2 diabetes.
Invariant manifolds and the response of spiral arms in barred galaxies
Creators: name: Tsoutsis, P.
name: Kalapotharakos, C.
name: Efthymiopoulos, C.
name: Contopoulos, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The unstable invariant manifolds of the short-period family of periodic orbits around the unstable Lagrangian points $L_1$ and $L_2$ of a barred galaxy define loci in the configuration space which take the form of a trailing spiral pattern. In the present paper we investigate this association in the case of the self-consistent models of Kaufmann & Contopoulos (1996) which provide an approximation of real barred-spiral galaxies. We also examine the relation of `response' models of barred-spiral galaxies with the theory of the invariant manifolds. Our main results are the following: The invariant manifolds yield the correct form of the imposed spiral pattern provided that their calculation is done with the spiral potential term turned on. We provide a theoretical model explaining the form of the invariant manifolds that supports the spiral structure. The azimuthal displacement of the Lagrangian points with respect to the bar's major axis is a crucial parameter in this modeling. When this is taken into account, the manifolds necessarily develop in a spiral-like domain of the configuration space, delimited from below by the boundary of a banana-like non-permitted domain, and from above either by rotational KAM tori or by cantori forming a stickiness zone. We construct `spiral response' models on the basis of the theory of the invariant manifolds and examine the connection of the latter to the `response' models (Patsis 2006) used to fit real barred-spiral galaxies, explaining how are the manifolds related to a number of morphological features seen in such models.
description: 16 Pages
Health-Seeking Behavior of Rural Households, Malaria, and Productivity in Northwestern Ethiopia
Creators: name: Chefke, Mihret
name: Abro, Zewdu
name: Meskel, Atnafu G.
name: Kassie, Menale
name: Chefke, Mihret
name: Abro, Zewdu
name: Meskel, Atnafu G.
name: Kassie, Menale
Publisher: name: Unknown
Year: 2021
Subjects: Health Economics and Policy
Community/Rural/Urban Development

description: Paper# 18952
Educators’ relationships and its impacts on students’ educational outcomes in higher educational institutions of Pakistan
Creators: name: Ali, Muhammad Rashid
name: Uppal, Muhammad Amaad
name: Renato, Peneluppi Jr Jose
name: Qasim, Haroon
name: Shafi, Ahsan
name: Hussain, Wazir Arif
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: To plan upcoming hundred years of success, society must establish an effective teaching structure and cultivate a collaborative environment among teaching faculty. This study attempts to identify the challenges faced by teaching faculty and the conflicts that arise in their professional pathways, and detrimental impact of adverse faculty relationship on students’ educational outcomes. Cross-sectional survey data were collected from 324 educators and 546 university students across 36 higher educational institutions in Pakistan. Pairwise correlation and multivariate regression analyses were employed to drive and analyze results. The findings reveal that teacher’s misbehavior (TM), illicit teachers’ relationship (TR) and university climate (UC) all exert negative impacts on students’ educational outcomes (SEO) at higher educational institutions . Additionally, we discovered that misbehavior between educators and higher discontent in university resources cause interpersonal conflict (IPC) between educators, subsequently adversely affecting students learning. These findings imply that students’ educational outcomes can be improved by minimizing adverse faculty relationships. It is pertinent to mention here that the study focuses specifically on the context of higher educational institutions in Pakistan. The findings may not be directly generalize-able to other countries or educational systems, as cultural and contextual factors can significantly influence teacher–teacher interactions and student outcomes. Nonetheless, the study provides valuable insights into the importance of fostering positive relationships among teaching faculty and the potential impact on students’ educational outcomes.
Search for charged Higgs bosons in top quark decays
Creators: name: D0 Collaboration
name: Abazov, V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a search for charged Higgs bosons in top quark decays. We analyze the \eplus, \muplus, $ee$, $eμ$, $μμ$, \etau and \mutau final states from top quark pair production events, using data from about 1${\text{fb}}^{-1}$ of integrated luminosity recorded by the \dzero experiment at the Fermilab Tevatron Collider. We consider different scenarios of possible charged Higgs boson decays, one where the charged Higgs boson decays purely hadronically into a charm and a strange quark, another where it decays into a $τ$ lepton and a $τ$ neutrino and a third one where both decays appear. We extract limits on the branching ratio $B(t\to H^+ b)$ for all these models. We use two methods, one where the $t\bar{t}$ production cross section is fixed, and one where the cross section is fitted simultaneously with $B(t\to H^+b)$. Based on the extracted limits, we exclude regions in the charged Higgs boson mass and $\tan β$ parameter space for different scenarios of the minimal supersymmetric standard model.
description: 10 pages, 8 figures, submitted to PLB
Productivity Growth and the Role of Mechanization in African Agriculture
Creators: name: Bekchanov, Maksud
name: Kirui, Oliver
name: Kornher, Lukas
name: Bekchanov, Maksud
name: Kirui, Oliver
name: Kornher, Lukas
Publisher: name: Unknown
Year: 2021
Subjects: Production Economics
Research and Development/Tech Change/Emerging Technologies

description: Paper# 18967
Experiences and perceptions of cybercrime victims in Ghana: The Perspective of digital consumers of agricultural produce
Creators: name: Mensah, Ronald Osei
name: Mensah, Pius
name: Opoku, Daniel
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: This qualitative study explores the perspectives and experiences of digital consumers who have been victims of agricultural produce-related digital crimes. This study aims to comprehend how victims experience and deal with the impact of cybercrime, as well as their perceptions of the effectiveness of the legal and criminal justice system in addressing cybercrime, through in-depth interviews with 26 digital consumers of agricultural produce associated with cybercrime from Labone, East Legon, Dzorwulu, Roman Ridge and Cantoments in the Greater Accra Region, Ghana. Thematic analysis was used to analyze the data. Data were processed in NVivo. Based on the study findings, it was concluded that cybercrime victims endured a variety of emotional, psychological, and financial repercussions. Cybercrime has a profound emotional impact on victims with regard to feeling angry, frustrated, or violated. Victims also suffer significant financial losses, which puts them in anguish and financial difficulty. Furthermore, the study concluded that victims of cybercrime have conflicting views on how well civil and criminal justice systems work to combat it. Although some victims think that the judicial system works well for them, others believe it is slow and ineffective, which makes them feel frustrated and helpless. The study recommends the need for more effective support and assistance for victims of cybercrime with respect to digital consumers of agricultural produce. This study underscores the need for greater awareness of cybercrime, as well as more effective and efficient mechanisms for reporting, investigating, and prosecuting cybercrime.
Household Agriculture and Food Security in the Face of COVID-19: Evidence from Five Sub-Saharan African Countries
Creators: name: Gourlay, Sydney
name: Amankwah, Akuffo
name: Gourlay, Sydney
name: Amankwah, Akuffo
Publisher: name: Unknown
Year: 2021
Subjects: Food Consumption/Nutrition/Food Safety
Consumer/Household Economics

description: Paper# 19004
Electronic Doping and Enhancement of n‐Channel Polycrystalline OFET Performance through Gate Oxide Modifications with Aminosilanes
Creators: name: Shin, Nara
name: Schellhammer, Karl Sebastian
name: Lee, Min Ho
name: Zessin, Jakob
name: Hambsch, Mike
name: Salleo, Alberto
name: Ortmann, Frank
name: Mannsfeld, Stefan C.B.
Publisher: name: Weinheim : Wiley-VCH
Year: 2021
Subjects: subject: aminosilanes
subject: charge transfer
subject: gate oxide modification
subject: organic field-effect transistors
subject: PTCDI-C8 morphology
subject: 540
subject: 600

description: Self-assembled monolayers (SAMs) are widely employed in organic field-effect transistors to modify the surface energy, surface roughness, film growth kinetics, and electrical surface potential of the gate oxide to control the device's operating voltage. In this study, amino-functionalized SAM molecules are compared to pure alkylsilane SAMS in terms of their impact on the electrical properties of organic field-effect transistors, using the n-type polycrystalline small molecule semiconductor material N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8). In order to understand the electronic impact of the amino groups, the effect of both the number of amino-containing functional groups and the SAM molecular length are systematically studied. Though amino-functionalized SAM materials have been studied previously, this study is, for the first time, able to shed light on the nature of the doping effect that occurs when the gate oxide is treated with polar aminosilane materials. By a comprehensive theoretical study of the interface on the molecular level, it is shown that the observed shift in the threshold voltage is caused by free charges, which are attracted to the PTCDI-C8 and are stabilized there by protonated aminosilanes. This attraction and the voltage shift can be systematically tuned by varying the length of the neutral terminal chain of the aminosilane. © 2021 The Authors. Advanced Materials Interfaces published by Wiley-VCH GmbH
Selection Effects in the SDSS Quasar Sample: The Filter Gap Footprint
Creators: name: Bell, M. B.
name: Comeau, S. P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the Sloan Digital Sky Survey (SDSS) quasars are targeted using colors and anything that can cause the identifying characteristics of the colors to disappear can create problems in the source selection process. Quasar spectra contain strong emission lines that can seriously affect the colors in photometric systems in which the transmission characteristics vary abruptly and significantly with redshift. When a strong line crosses a gap between two filter passbands the color effects induced by the line change abruptly, and there is also a dimming in apparent brightness compared to those redshifts where the strong line is inside a filter passband where the transmission is high. The strong emission lines in quasars, combined with the varying detectability introduced by the transmission pattern of the five filters, will result in a filter-gap footprint being imprinted on the N(z) distribution, with more quasars being missed when a strong line falls in a filter gap. It is shown here that a periodicity of Delta(z)~0.6 is imprinted on the redshift-number distribution by this selection effect. Because this effect cannot be rigorously corrected for, astronomers need to be aware of it in any investigation that uses the SDSS N(z) distribution. Its presence also means that the SDSS quasar data cannot be used either to confirm or to rule out the Delta(z)~0.6 redshift period reported previously in other, unrelated quasar data.
description: Eleven pages with 9 figures. Accepted for publication in Astrophysics and Space Science
Measurements of h_c(^1P_1) in psi' Decays
Creators: name: The BESIII Collaboration
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present measurements of the charmonium state $h_c(^1P_1)$ made with 106M $ψ'$ events collected by BESIII at BEPCII. Clear signals are observed for $ψ'\toπ^0 h_c$ with and without the subsequent radiative decay $h_c\toγη_c$. First measurements of the absolute branching ratios $\mathcal{B}(ψ' \toπ^0 h_c) = (8.4 \pm 1.3 \pm 1.0) \times 10^{-4}$ and $\mathcal{B}(h_c \to γη_c) = (54.3 \pm 6.7 \pm5.2)%$ are presented. A statistics-limited determination of the previously unmeasured $h_c$ width leads to an upper limit $Γ(h_c)<1.44 $MeV (90% confidence). Measurements of $M(h_c) = 3525.40 \pm 0.13 \pm 0.18 $MeV/$c^2$ and $\mathcal{B}(ψ'\to π^0 h_c) \times \mathcal{B}(h_c \to γη_c) = (4.58 \pm 0.40 \pm 0.50) \times 10^{-4}$ are consistent with previous results.
description: 5 pages, 1 figure, accepted for publication in Physical Review Letters
A daily tag return model for lobster fisheries
Creators: name: Burch, P
Publisher: name: University Of Tasmania
Year: 2023

description: A daily tag return model was developed to estimate shing and natural mortality, tag reporting rate and catchability with application to lobster sheries. Tag return data is usually collected with knowledge of the exact date of recapture. By modelling tags individually, each tag contributes information on shing and natural mortality, catchability and tag reporting rate to the likelihood. Providing sucient tags are maintained in the shery to enable recaptures to occur during the shing season, ner resolution of parameters is possible. Model performance was tested by simulation of dierent times of release and recapture as well as a range of dierent seasonal shing patterns typically found in lobster sheries. Precision and accuracy of estimates were improved when there was a contrast in shing eort throughout the season or a seasonal closure within the year. The timing of tag release was not found to aect model performance. Evaluation of the model was undertaken by comparison of estimates from a previous study using an identical dataset. Total mortality estimates were equivalent between models although separation of shing and natural mortality diered between models. Small improvements in the precision of estimates were obtained for the model that incorporated exact times of tag release and recapture. The daily model enabled ner time scale estimates of parameters and this was explored in the estimate of within season catchability. Penalised spline smoothing was applied to estimate catchability, resulting in a curve that captured the timing of biological events such as moulting and mating. Higher shing mortality estimates were obtained when the shing eet was separated into groups based on their reliability at returning tags. This suggests that shing mortality estimates could be compromised when reporting rate is considered cosmopolitan across the entire eet. However, the small number of reliable shers and their shing patterns, make interpretation of results problematic. A cost-benet analysis of the use of PIT tags compared to T-bar tags, the standard tag used in lobster sheries, was undertaken. For a given cost the higher expenses associated with PIT tags and scanners resulted in fewer lobster being tagged compared to T-bar tags. The improved tag reporting rate from PIT tags resulted in improved precision and accuracy of mortality estimates using this technology unless the tag reporting rate for T-bar tags was substantially increased.
Finanzierungsmodelle innerhalb von Konsortien - ist eine „gerechte“ Kostenverteilung möglich und realisierbar?
Creators: name: Vosberg, Dana
Publisher: name: Reutlingen : Berufsverband Information Bibliothek e. V.
Year: 2017
Subjects: subject: Fairness
subject: Konsortium
subject: Kostenverteilungsmodell
subject: Consortium
subject: Cost Distribution
subject: 020

description: Der Zusammenschluss von Bibliotheken zur gemeinschaftlichen Verhandlung und Abwicklung der Lizenzierung elektronischer Ressourcen ist mittlerweile weit verbreitet. Es existiert eine Vielzahl regionaler, überregionaler oder einrichtungsbezogener Konsortien, in denen Bibliotheken ihre Verhandlungsmacht bündeln, um auf diese Weise bessere Vertragskonditionen zu erzielen. Die Höhe möglicher Konsortialrabatte sagt aber noch nichts darüber aus, ob innerhalb eines Konsortiums wirklich alle Bibliotheken gleichermaßen von einer Teilnahme profitieren. Bisher wird die Kostenverteilung in Konsortien meist durch den Verlag und oft noch auf Basis bestehender Print-Abonnements vorgenommen. Es stellt sich die Frage, ob eine solche Kostenverteilung noch zeitgemäß ist und ob sich vielleicht durch die Berücksichtigung weiterer, z.B. nutzungsbezogener Kennzahlen eine angemessenere Kostenbelastung erreichen lässt. Das Ziel des Beitrages besteht deshalb darin, ein Finanzierungsmodell zu entwickeln, dass durch die Einbeziehung und Gewichtung verschiedener einrichtungsbezogener Kennzahlen eine hinreichend "gerechte“ Kostenverteilung zwischen den Konsortialteilnehmern ermöglicht.
Special L-values of t-motives: a conjecture
Creators: name: Taelman, Lenny
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G09

description: We propose a conjecture on special values of $ L $-functions in a function field context with positive characteristic coefficients. For $ M $ a uniformizable $ t $-motive with everywhere good reduction we conjecture a relation between the value of the Goss $ L $-function $ L(M^\vee, s) $ at $ s = 0 $ and the uniformization of the abelian $ t $-module associated with $ M $. When $ M $ is a power of the Carlitz $ t $-motive the conjecture specializes to a theorem of Anderson and Thakur on Carlitz zeta values. Beyond this case we present numerical evidence.
description: in International Mathematics Research Notices (2009)
D3.3 – Annual Report from TheFSM Software Components Integration and Testing
Creators: name: Vergeti, Danai
name: Ntalaperas, Dimitris
name: Angelidis, Iosif
Publisher: name: Zenodo
Year: 2021
Subjects: food safety
big data
standards
certification

description: In the current document we present the integration strategy of TheFSM Platform which
 includes the development, testing and deployment strategy for TheFSM technical solution. We
 focus the on methodology on both component and platform level. Unit testing is utilized to
 automate testing as much as possible, while we carefully follow well-established industry
 standards and methodologies in our approach. We provide examples of unit tests which test
 the internal functionality of components and their compliance with the specifications.
 Additionally, integration tests are provisioned in order to assure the interoperability between
 components. As more use cases are covered by the platform, these tests will evolve, adapt and
 carefully cover the newly added functionality. Moreover, we describe issue tracking and the
 dockerization process we follow during development.
 The current document provides a) the approach we follow in development regarding both the
 overall project and within component level, b) the technical verification of our pipeline. We
 define how verification is guaranteed via unit and integration testing, thoroughly describing
 the unit testing process and c) the technical evaluation, where we define metrics and KPIs
 relevant to the project and we provide analytical tables which include our performance against
 the relevant metrics.
Educators’ relationships and its impacts on students’ educational outcomes in higher educational institutions of Pakistan
Creators: name: Ali, Muhammad Rashid
name: Uppal, Muhammad Ammad
name: Renato, Peneluppi Jr Jose
name: Qasim, Haroon
name: Shafi, Ahsan
name: Arif, Wazir
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: To plan upcoming hundred years of success, society must establish an effective teaching structure and cultivate a collaborative environment among teaching faculty. This study attempts to identify the challenges faced by teaching faculty and the conflicts that arise in their professional pathways, and detrimental impact of adverse faculty relationship on students’ educational outcomes. Cross-sectional survey data were collected from 324 educators and 546 university students across 36 higher educational institutions in Pakistan. Pairwise correlation and multivariate regression analyses were employed to drive and analyze results. The findings reveal that teacher’s misbehavior (TM), illicit teachers’ relationship (TR) and university climate (UC) all exert negative impacts on students’ educational outcomes (SEO) at higher educational institutions . Additionally, we discovered that misbehavior between educators and higher discontent in university resources cause interpersonal conflict (IPC) between educators, subsequently adversely affecting students learning. These findings imply that students’ educational outcomes can be improved by minimizing adverse faculty relationships. It is pertinent to mention here that the study focuses specifically on the context of higher educational institutions in Pakistan. The findings may not be directly generalize-able to other countries or educational systems, as cultural and contextual factors can significantly influence teacher–teacher interactions and student outcomes. Nonetheless, the study provides valuable insights into the importance of fostering positive relationships among teaching faculty and the potential impact on students’ educational outcomes.
Food without Fire: Preliminary Nutritional Outcomes from a Solar Stove Field Experiment
Creators: name: McCann, Laura
name: Michler, Jeffrey
name: Carmona, Natalia Estrada
name: Raneri, Jessica
name: McCann, Laura
name: Michler, Jeffrey
name: Carmona, Natalia Estrada
name: Raneri, Jessica
Publisher: name: Unknown
Year: 2021
Subjects: Food Consumption/Nutrition/Food Safety
Resource /Energy Economics and Policy

description: Paper# 19089
Economic Optimization of Soil-Crop Specific Fertilizer Formulations in Nigeria
Creators: name: Ayoola, Gbolagade Babalola
name: Chude, Victor
name: Ayoola, Gbolagade Babalola
name: Chude, Victor
Publisher: name: Unknown
Year: 2021
Subjects: Crop Production/Industries
Production Economics

description: Paper# 19107
Edward Swarbeck Hall: medical scientist and social reformer in colonial Tasmania
Creators: name: Haynes, EF
Publisher: name: University Of Tasmania
Year: 2023

description: On January 15 , 1933 , Harold Latham of Auckland Road, Greenmeadows , New Zealand, wrote to his cousin, Leventhorpe Hall, in Tasmania: On 25th August , 1933, you will celebrate the hundredth anniversary of your family landing in Hobart. I read in the last Mail you sent those extracts from old letters which gave such a clear picture of conditions as they were in those days and in which you must all have shared for years; all the hardships of pioneer days made worse by the brutal convict system which your grand old fighting father did so much to lessen, even against official authority. I hope a fitting commemoration will be made on the above date of the part the Hall family took in the making of Tasmania as she is today. Some years later, on a more formal not e , W. E. L. H. Crowther in an Archibald Watson Memorial Lecture said: The work of Dr E. S. Hall, MR. C. S., L. S.A., during many years of practice in Van Diemen's Land and as the pioneer epidemiologist of the Australian Colonies (Cumpston 1923) is yet to be fully recognised. A member of the Old Religion and an utterly loyal son of his Church, he became the best known Catholic layman in our Island. Simple and humane he worked primarily for the good of the orphans, the poor and the outcast and exemplified the conception of a christian gentleman. His published work is of great scientific interest and value and, an ardent bibliophile , he pub lished in his latter years a book entitled \Who Translated the Bible\" in support of the -early teaching of his Church. An attempt has been made now with this study of Hall's life to fill a long standing gap in Tasmania's history. The task was very rewarding; not just an academic exercise but a duty owed to Hall's memory and to Tasmania's heritage . introduction. As the story speaks for itself it needs little introduction. However there are some features of the work which I would like to explain."
Zooming in on local level statistics by supersymmetric extension of free probability
Creators: name: Mandt, S.
name: Zirnbauer, M. R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider unitary ensembles of Hermitian NxN matrices H with a confining potential NV where V is analytic and uniformly convex. From work by Zinn-Justin, Collins, and Guionnet and Maida it is known that the large-N limit of the characteristic function for a finite-rank Fourier variable K is determined by the Voiculescu R-transform, a key object in free probability theory. Going beyond these results, we argue that the same holds true when the finite-rank operator K has the form that is required by the Wegner-Efetov supersymmetry method of integration over commuting and anti-commuting variables. This insight leads to a potent new technique for the study of local statistics, e.g., level correlations. We illustrate the new technique by demonstrating universality in a random matrix model of stochastic scattering.
description: 38 pages, 3 figures, published version, minor changes in Section 6
The Economic, Food Security, and Health Effects of Fall Armyworm in Ethiopia
Creators: name: Kassie, Menale
name: Abro, Zewdu
name: Kimathi, Emily
name: De Groote, Hugo
name: Tefera, Tadele
name: Subramanian, Sevgan
name: Wossen, Tesfamichael
name: Ekesi, Sunday
name: Ekesi, Sunday
name: Kassie, Menale
name: Abro, Zewdu
name: Kimathi, Emily
name: De Groote, Hugo
name: Tefera, Tadele
name: Subramanian, Sevgan
name: Wossen, Tesfamichael
name: Ekesi, Sunday
name: Ekesi, Sunday
Publisher: name: Unknown
Year: 2021
Subjects: Food Consumption/Nutrition/Food Safety
Crop Production/Industries

description: Paper# 19131
Exceptional Vertex Operator Algebras and the Virasoro Algebra
Creators: name: Tuite, Michael P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B69, 17B68, 17B67, 17B25 (Primary), 20E32 (Secondary)

description: We consider exceptional vertex operator algebras for which particular Casimir vectors constructed from the primary vectors of lowest conformal weight are Virasoro descendants of the vacuum. We discuss constraints on these theories that follow from an analysis of appropriate genus zero and genus one two point correlation functions. We find explicit differential equations for the partition function in the cases where the lowest weight primary vectors form a Lie algebra or a Griess algebra. Examples include the Wess-Zumino-Witten model for Deligne's exceptional Lie algebras and the Moonshine Module. We partially verify the irreducible decomposition of the tensor product of Deligne's exceptional Lie algebras and consider the possibility of similar decompositions for tensor products of the Griess algebra. We briefly discuss some conjectured extremal vertex operator algebras arising in Witten's recent work on three dimensional black holes.
description: 13 pages, Talk presented at "Vertex Operator Algebras and Related Areas" at Illinois State University, July 2008
Has Global Agricultural Trade Been Resilient Under COVID-19? Lessons from an Econometric Assessment
Creators: name: Arita, Shawn
name: Grant, Jason
name: Sydow, Sharon
name: Beckman, Jayson
name: Arita, Shawn
name: Grant, Jason
name: Sydow, Sharon
name: Beckman, Jayson
Publisher: name: Unknown
Year: 2021
Subjects: International Relations/Trade

description: Paper# 19155