cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ornithomimus grandis Marsh 1890
Creators: name: Osborn, H. F.
Publisher: name: Zenodo
Year: 1917
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Dinosauria
Ornithomimidae
Ornithomimus
Ornithomimus grandis

description: 3. “ Ornithomimus” grandis. The type of " Ornithomimus” grandis Marsh has not been located in the United States National Museum; its generic and family reference is therefore doubtful at present. It may belong to the genus Deinodon Leidy. Hatcher’s record regarding its geological position (Bull. U. S. Geol. Surv. 257, pp. 12-41-87) is that it was found in the Eagle Sandstones.6 1 Notes given for the writer by G. L. Cannon to Mr. Barnum Brown orally on June 29, 1916. 2 Letter of R. S. Lull to the writer, January 12, 1916. 3 Gilmore, Charles W. Letter to the author, January 15, 1916. 4 If the genus Struthiomimus is established this species should be transferred to it. 5 Hatcher, J. B. Science, N. S., Vol. XVI., no. 412, November 21, 1902, pp. 831 - 832. 6 Gilmore, Charles W. Letter to the writer, Jan. 15, 1916. The American Museum expeditions have secured abundant remains of the Ornithomimidae in three zones, viz.: Belly River (= Fort Pierre), Edmonton (= intermediate), Hell Creek (= Lance).
description: Published as part of Osborn, H. F., 1917, Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus, pp. 733-771 in Bulletin of the American Museum of Natural History 35 on pages 740-741, DOI: 10.5281/zenodo.1040385
Generalized Effective Operator Formalism for Decaying Systems
Creators: name: Paraschiv, Marius
name: Wölk, Sabine
name: Mannel, Thomas
name: Gühne, Otfried
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Systems of neutral kaons can be used to observe entanglement and the violation of Bell inequalities. The decay of these particles poses some problems, however, and recently an effective formalism for treating such systems has been derived. We generalize this formalism and make it applicable to other quantum systems that can be made to behave in a similar manner. As examples, we discuss two possible implementations of the generalized formalism using trapped ions such as $^{171}$Yb or $^{172}$Yb, which may be used to simulate kaonic behavior in a quantum optical system.
description: 11 pages, 20 figures
ExperienceDNA: A Framework to Conduct and Analyse User Tests in VR
Creators: name: Joundi, Jamil
name: Bombeke, Klaas
name: Saldien, Jelle
name: Durnez, Wouter
name: De Bruyne, Jonas
name: Vanroelen, Charlotte
name: Zheleva, Aleksandra
Publisher: name: Zenodo
Year: 2022

description: How can we provide a positive user experience in our future smart spaces, given the strong growth of smart devices, each demanding attention with their own visual, auditory and tactile interactions?
 We will define a framework that is able to map the user experience journey in which all possible interactions between the user the products and the smart environment are measured in detail.
 In order to achieve this, we will create a Unity workspace to simulate smart environments by combining spatial audio, virtual reality and tactile interactions. In this workspace we will explore psychophysiological markers of the user’s personal experience of these interactions (blink rate, skin conductance and heart rate) and assess the practical feasibility for user evaluation. Furthermore we will setup a protocol to capture all relevant interactions that occur in the context of a smart environment based on our HCCI (Human Computer Context Interaction) framework. This will be implemented via a Proof of Concept based on the smart kitchen environment.
Modelling the Inner Debris Disc of HR 8799
Creators: name: Contro, B.
name: Horner, J.
name: Wittenmyer, R. A.
name: Marshall, J. P.
name: Hinse, T. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In many ways, the HR 8799 planetary system strongly resembles our own. It features four giant planets and two debris belts, analogues to the Asteroid and Edgeworth-Kuiper belts. Here, we present the results of dynamical simulations of HR 8799's inner debris belt, to study its structure and collisional environment. Our results suggest that HR 8799's inner belt is highly structured, with gaps between regions of dynamical stability. The belt is likely constrained between sharp inner and outer edges, located at ~6 and ~8 au, respectively. Its inner edge coincides with a broad gap cleared by the 4:1 mean-motion resonance with HR 8799e. Within the belt, planetesimals are undergoing a process of collisional attrition like that observed in the Asteroid belt. However, whilst the mean collision velocity in the Asteroid belt exceeds 5 km/s, the majority of collisions within HR 8799's inner belt occur with velocities of order 1.2 km/s, or less. Despite this, they remain sufficiently energetic to be destructive - giving a source for the warm dust detected in the system. Interior to the inner belt, test particles remain dynamically unstirred, aside from narrow bands excited by distant high-order resonances with HR 8799e. This lack of stirring is consistent with earlier thermal modelling of HR 8799's infrared excess, which predicted little dust inside 6 au. The inner system is sufficiently stable and unstirred that the formation of telluric planets is feasible, although such planets would doubtless be subject to a punitive impact regime, given the intense collisional grinding required in the inner belt to generate the observed infrared excess.
description: 25 pages, 11 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society on 1st August 2016
Hail Mary, Full of Grace: Marian Veneration and Representation Among Chicagoland Polish-Americans
Creators: name: Cooper, Gabrielle
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: Religion
subject: Polish Diaspora
subject: Chicago
subject: Catholicism

description: Chicagoland Polish-Americans practice a style of Marian worship that is just as Polish-American as they are. Continued Marian devotion disproves certain assimilation and extinction myths.
First Monte Carlo analysis of fragmentation functions from single-inclusive $e^+ e^-$ annihilation
Creators: name: Sato, N.
name: Ethier, J. J.
name: Melnitchouk, W.
name: Hirai, M.
name: Kumano, S.
name: Accardi, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform the first iterative Monte Carlo (IMC) analysis of fragmentation functions constrained by all available data from single-inclusive $e^+ e^-$ annihilation into pions and kaons. The IMC method eliminates potential bias in traditional analyses based on single fits introduced by fixing parameters not well contrained by the data and provides a statistically rigorous determination of uncertainties. Our analysis reveals specific features of fragmentation functions using the new IMC methodology and those obtained from previous analyses, especially for light quarks and for strange quark fragmentation to kaons.
description: 44 pages, 11 figures
A General Overview of the Missing Data Problem
Creators: name: Ford, Barry L.
Publisher: name: Unknown
Year: 1978
Subjects: Research Methods/ Statistical Methods

description: Two technical reports have been released which provide a detailed comparison of various missing data procedures. In fact, the details may have obscured general philosophies and concepts. The purpose of this working paper is to discuss these philosophies and concepts. After two reports the time seems appropriate to reflect upon the trends in the work which is already done and to outline the future work which is needed. Thus, this paper has a more general, discursive and often subjective tone than the two previous reports, but this tone is needed in order to give an overview without digressing into statistical technicalities.
Struthiomimus altus
Creators: name: Osborn, H. F.
Publisher: name: Zenodo
Year: 1917
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Dinosauria
Ornithomimidae
Struthiomimus
Struthiomimus altus

description: 4. Struthiomimus altus. The type of Struthiomimus (Ornithomimus) altus Lambe is from the Belly River series, Red Deer River, Alberta, Canada, now regarded as of approximately the same age as the Judith River. It consists of a “complete right hind limb (including the foot), the phalanges of the left foot in place, a pubic bone, and an ischium, of one individual" (p. 50).1 Catalogue number 930f Ottawa Museum. “The right hind limb with the phalanges of the left foot, were found in 1901, below Berry Creek.” (p. 53).
description: Published as part of Osborn, H. F., 1917, Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus, pp. 733-771 in Bulletin of the American Museum of Natural History 35 on page 742, DOI: 10.5281/zenodo.1040385
The properties of the Malin 1 galaxy giant disk: A panchromatic view from the NGVS and GUViCS surveys
Creators: name: Boissier, S.
name: Boselli, A.
name: Ferrarese, L.
name: Cote, P.
name: Roehlly, Y.
name: Gwyn, S. D. J.
name: Cuillandre, J. -C.
name: Roediger, J.
name: Koda, J.
name: Mateos, J. C. Munos
name: de Paz, A. Gil
name: Madore, B. F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Low surface brightness galaxies (LSBGs) represent a significant percentage of local galaxies but their formation and evolution remain elusive. They may hold crucial information for our understanding of many key issues (i.e., census of baryonic and dark matter, star formation in the low density regime, mass function). The most massive examples - the so called giant LSBGs - can be as massive as the Milky Way, but with this mass being distributed in a much larger disk. Malin 1 is an iconic giant LSBG, perhaps the largest disk galaxy known. We attempt to bring new insights on its structure and evolution on the basis of new images covering a wide range in wavelength. We have computed surface brightness profiles (and average surface brightnesses in 16 regions of interest), in six photometric bands (FUV, NUV, u, g, i, z). We compared these data to various models, testing a variety of assumptions concerning the formation and evolution of Malin 1. We find that the surface brightness and color profiles can be reproduced by a long and quiet star-formation history due to the low surface density; no significant event, such as a collision, is necessary. Such quiet star formation across the giant disk is obtained in a disk model calibrated for the Milky Way, but with an angular momentum approximately 20 times larger. Signs of small variations of the star-formation history are indicated by the diversity of ages found when different regions within the galaxy are intercompared.For the first time, panchromatic images of Malin 1 are used to constrain the stellar populations and the history of this iconic example among giant LSBGs. Based on our model, the extreme disk of Malin 1 is found to have a long history of relatively low star formation (about 2 Msun/yr). Our model allows us to make predictions on its stellar mass and metallicity.
description: Accepted in Astronomy and Astrophysics
Conceptual Rover Design for Future Turkish Lunar Mission.pdf
Creators: name: kosoglu, barbaros teoman
name: boybasi, beste
name: kosker, oznur
name: altuntas, nurdeniz
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 400107
subject: Satellite, space vehicle and missile design and testing

description: Moon missions are growing in popularity, with numerous nations such as Russia, China, and the USA, and commercial enterprises aiming to explore the lunar surface. Türkiye is also taking a step to become one of the pioneers in the space race, with the "National Space Program", introduced in 2020 by the Turkish Space Agency (TUA). One of the main pillars of the National Space Program is the Moon Research Program where two missions are planned with targets of reaching the Lunar orbit and then the surface through hard landing within a few years (AYAP-1) and delivering a rover to the surface through soft landing (AYAP-2). In this manner, a group of AYAP-1 scholarship students of TUBITAK UZAY-Space Technologies Research Institute and Space Exploration Society (UKET) members has performed a conceptual design for a small Lunar rover considering AYAP-2 (soft landing mission). UKET is the main organizer of the international Anatolian Rover Challenge, which is the first and only international rover challenge in Türkiye and it aims to cultivate competent engineers for the space industry for TUA and TUBITAK UZAY. In this paper, the design factors of the rover are discussed, including the choice of the instruments, the rover's size and mobility, payload capacity, subsystems, the technical budgets needed for development and operations, and the conceptual design of the rover itself. The main goal in designing the rover is to carry out scientific research focused on the physical properties of the landing site, detect and analyze the concentrations of different minerals and elements, measure the growth of organisms under the conditions of the Moon, and investigate how the mining capacity of microorganisms is effected from the lunar conditions.
The small-scale turbulent dynamo in smoothed particle magnetohydrodynamics
Creators: name: Tricco, Terrence S.
name: Price, Daniel J.
name: Federrath, Christoph
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Supersonic turbulence is believed to be at the heart of star formation. We have performed smoothed particle magnetohydrodynamics (SPMHD) simulations of the small-scale dynamo amplification of magnetic fields in supersonic turbulence. The calculations use isothermal gas driven at rms velocity of Mach 10 so that conditions are representative of star-forming molecular clouds in the Milky Way. The growth of magnetic energy is followed for 10 orders in magnitude until it reaches saturation, a few percent of the kinetic energy. The results of our dynamo calculations are compared with results from grid-based methods, finding excellent agreement on their statistics and their qualitative behaviour. The simulations utilise the latest algorithmic developments we have developed, in particular, a new divergence cleaning approach to maintain the solenoidal constraint on the magnetic field and a method to reduce the numerical dissipation of the magnetic shock capturing scheme. We demonstrate that our divergence cleaning method may be used to achieve $\nabla \cdot {\bf B}=0$ to machine precision, albeit at significant computational expense.
description: 10 pages, 6 figures. Proceedings of ASTRONUM 2015, June 8-12, 2015, Avignon, France
Struthiomimus , Osborn 1916, gen. nov.
Creators: name: Osborn, H. F.
Publisher: name: Zenodo
Year: 1917
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Dinosauria
Ornithomimidae
Struthiomimus

description: Struthiomimus gen. nov. Generic characters of Struthiomimus. Stage of evolution of the Ornithomimidae, corresponding with the Judith River or Belly River formation, Monoclonius-Ceratops zone. Skull relatively small, edentulous; manus isotridactyl, with elongate and slightly recurved terminal phalanges, metacarpals I—II incipiently coalescent; pollex phalanges separate, divergent; pes anisotetradactyl, Mts. II, III, IV incipiently coalescent, Mts. V present, reduced; Digit III relatively elongated. The generic characters are based upon the complete skeleton of Struthiomimus altus, Amer. Mus. 5339.
description: Published as part of Osborn, H. F., 1917, Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus, pp. 733-771 in Bulletin of the American Museum of Natural History 35 on page 744, DOI: 10.5281/zenodo.1040385
Euler-type equations and commutators in singular and hyperbolic limits of kinetic Cucker-Smale models
Creators: name: Poyato, David
name: Soler, Juan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper deals with the derivation and analysis of a compressible Euler-type equation with singular commutator, which is derived from a hyperbolic limit of the kinetic description to the Cucker-Smale model of interacting individuals
description: 39 pages, 1 figure
The State of Employee Commitment to Organizational Goals in Addis Ababa City Administration
Creators: name: Miruts, Gebre
Publisher: name: African Journal of Leadership and Development
Year: 2021

description: The state of employee commitment is a multi-dimensional individual's psychological attachment to an organization. Hence, the study aims at examining the state of employee commitment to organizational goals using the components of Tri-Dia Model of Employee Commitment Employee engagement, employee job satisfaction, and transformational leadership was also used as a common denominator to check the interface between employee commitment and organizational effectiveness. Descriptive and explanatory research types were employed and 400 samples were used. Primary and secondary sources were used. Descriptive statistics, correlation, regression, and content analysis were applied. The study concluded that, besides, the unnecessary political interference, employee commitment was very poor, employee disengagement was common and therefore employees were dissatisfied, meanwhile role of leadership to ensure employee commitment was still poor. Therefore, the city administration should have to take remedial action to control unnecessary political interference and the dyadic leadership style to promote employee commitment. The clear-cut separation of power between party politics and government bureaucracy must urgently be established. If not corrected, the status quo practices may, in addition to employee disengagement, dissatisfaction, and poor commitment, jeopardize the organizational effectiveness of the city as well as that of the country.
description: African Journal of Leadership and Development, Vol. 6 No. 1 (2021): Job Performance
Joint Statistics of Strongly Correlated Neurons via Dimensional Reduction
Creators: name: Deniz, Taskin
name: Rotter, Stefan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The relative timing of action potentials in neurons recorded from local cortical networks often shows a non-trivial dependence, which is then quantified by cross-correlation functions. Theoretical models emphasize that such spike train correlations are an inevitable consequence of two neurons being part of the same network and sharing some synaptic input. For non-linear neuron models, however, explicit correlation functions are difficult to compute analytically, and perturbative methods work only for weak shared input. In order to treat strong correlations, we suggest here an alternative non-perturbative method. Specifically, we study the case of two leaky integrate-and-fire neurons with strong shared input. Correlation functions derived from simulated spike trains fit our theoretical predictions very accurately. Using our method, we computed the non-linear correlation transfer as well as correlation functions that are asymmetric due to inhomogeneous intrinsic parameters or unequal input.
description: 40 pages, 11 figures. Submitted to IOP-Journal of Physics A
Effect of a skin-deep surface zone on formation of two-dimensional electron gas at a semiconductor surface
Creators: name: Olszowska, Natalia
name: Lis, Jakub
name: Ciochon, Piotr
name: Walczak, Lukasz
name: Michel, Enrique G.
name: Kolodziej, Jacek J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Two dimensional electron gases (2DEGs) at surfaces and interfaces of semiconductors are described straightforwardly with a 1D self-consistent Poisson-Schrödinger scheme. However, their band energies have not been modeled correctly in this way. Using angle-resolved photoelectron spectroscopy we study the band structures of 2DEGs formed at sulfur-passivated surfaces of InAs(001) as a model system. Electronic properties of these surfaces are tuned by changing the S coverage, while keeping a high-quality interface, free of defects and with a constant doping density. In contrast to earlier studies we show that the Poisson-Schrödinger scheme predicts the 2DEG bands energies correctly but it is indispensable to take into account the existence of the physical surface. The surface substantially influences the band energies beyond simple electrostatics, by setting nontrivial boundary conditions for 2DEG wavefunctions.
description: 9 pages, 7 figures, 2 tables
Polarization basis tracking scheme for quantum key distribution with revealed sifted key bits
Creators: name: Ding, Yu-Yang
name: Chen, Wei
name: Chen, Hua
name: Wang, Chao
name: li, Ya-Ping
name: Yin, Zhen-Qiang
name: Wang, Shuang
name: Guo, Guang-Can
name: Han, Zheng-Fu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Calibration of the polarization basis between the transmitter and receiver is an important task in quantum key distribution (QKD). An effective polarization-basis tracking scheme will decrease the quantum bit error rate (QBER) and improve the efficiency of a polarization encoding QKD system. In this paper, we proposed a polarization-basis tracking scheme using only unveiled sifted key bits while performing error correction by legitimate users, rather than introducing additional reference light or interrupting the transmission of quantum signals. A polarization-encoding fiber BB84 QKD prototype was developed to examine the validity of this scheme. An average QBER of 2.32% and a standard derivation of 0.87% have been obtained during 24 hours of continuous operation.
description: 8 pages 5 figures
The Effects of Performance Management Practices on Academic Staff’ Job Satisfaction in some Selected Ethiopian Universities
Creators: name: Mered, Demes
name: Prasher, Ajay
name: Kacho, Bersisa
Publisher: name: African Journal of Leadership and Development
Year: 2021

description: Universities are playing a vital role in developing human capital, economic growth and development of countries. They need to implement the PM system to align individual goals with department, college and university strategic goals to improve the overall performance of the university. The study aimed to investigate the practices of performance management dimensions and their effects on academic staff’s job satisfaction in some selected Ethiopian public and private universities. The study used a mixed research approach and descriptive and explanatory research designs were used. Data was collected via questionnaire, semi-structured interviews, and documents. The questionnaire respondents were 307 academic staff from public and private universities. Qualitative data were collected from semi-structured interviews and open-ended questionnaires. The interviewees were purposefully selected from research coordination and publication directors, community service directors, and department heads. Quantitative data were analyzed with SPSS version 25 using descriptive statistics (frequency and percentage) and inferential statistics (independent samples t-test, ANOVA, Pearson correlation, and hierarchical multiple regression). Documents and qualitative data were examined through theme analysis. The finding of the study showed that there was a positive and significant relationship between the practices of the PM dimensions together and their effects on the job satisfaction of the academic staff in the selected universities The Pearson correlation analysis finding showed that performance management dimensions had a positive correlation with academic staff job satisfaction. The finding indicated the effect of each PM dimension on the job satisfaction of academic staff. The finding also indicated the comparison t-test and R2 value for public and private universities. The study concluded that job satisfaction of academic staff was achieved by their performance directly from the practices of the performance management dimensions. The findings indicated the contribution of each performance management dimension and their effect on job satisfaction. Managing these factors could be beneficial for university management (presidents, college directors, and department heads) and academic staff.
description: African Journal of Leadership and Development, Vol. 6 No. 1 (2021): Job Performance
The Damascus Inequality
Creators: name: Dannan, Fozi M.
name: Sitnik, S. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26D15

description: In 2016 Prof. Fozi M. Dannan from Damascus, Syria proposed an inequality for three positive numbers with unit product. It became widely known but was not proved yet in spite of elementary formulation. We give some proofs for this inequality, a number of its generalizations and some connected unsolved problems and conjectures.
description: 12 pages, 2 figures
A Tail of Two Populations: Chemo-dynamics of the Sagittarius Stream and Implications for its Original Mass
Creators: name: Gibbons, S. L. J.
name: Belokurov, V.
name: Evans, N. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use the SDSS/SEGUE spectroscopic sample of stars in the leading and trailing streams of the Sagittarius (Sgr) to demonstrate the existence of two sub-populations with distinct chemistry and kinematics. The metallicity distribution function (MDF) of the trailing stream is decomposed into two Gaussians describing a metal-rich sub-population with means and dispersions (-0.74, 0.18) dex and a metal-poor with (-1.33, 0.27) dex. The metal-rich sub-population has a velocity dispersion ~ 8 km/s, whilst the metal-poor is nearly twice as hot ~13 km/s. For the leading stream, the MDF is again well-described by a superposition of two Gaussians, though somewhat shifted as compared to the trailing stream. The metal-rich has mean and dispersion (-1.00, 0.34) dex, the metal-poor (-1.39, 0.22) dex. The velocity dispersions are inflated by projection effects to give 15 - 30 km/s for the metal-poor, and 6 - 20 km/s for the metal-rich, depending on longitude. We infer that, like many dwarf spheroidals, the Sgr progenitor possessed a more extended, metal-poor stellar component and less extended, metal-rich one. We study the implications of this result for the progenitor mass by simulating the disruption of the Sgr, represented as King light profiles in dark halos of masses between $10^{10}$ and $10^{11} M_\odot$, in a three-component Milky Way whose halo is a live Truncated Flat potential in the first phase of accretion and a triaxial Law \& Majewski model in the second phase. We show that that the dark halo of the Sgr must have been $\gtrsim 6 \times 10^{10} M_\odot$ to reproduce the run of velocity dispersion with longitude for the metal-rich and metal-poor sub-populations in the tails.
description: MNRAS, submitted, comments welcome
Efficient creation of dipolar coupled nitrogen-vacancy spin qubits in diamond
Creators: name: Jakobi, Ingmar
name: Momenzadeh, Seyed Ali
name: de Oliveira, Felipe Fávaro
name: Michl, Julia
name: Ziem, Florestan
name: Schreck, Matthias
name: Neumann, Philipp
name: Denisenko, Andrej
name: Wrachtrup, Jörg
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Coherently coupled pairs or multimers of nitrogen-vacancy defect electron spins in diamond have many promising applications especially in quantum information processing (QIP) but also in nanoscale sensing applications. Scalable registers of spin qubits are essential to the progress of QIP. Ion implantation is the only known technique able to produce defect pairs close enough to allow spin coupling via dipolar interaction. Although several competing methods have been proposed to increase the resulting resolution of ion implantation, the reliable creation of working registers is still to be demonstrated. The current limitation are residual radiation-induced defects, resulting in degraded qubit performance as trade-off for positioning accuracy. Here we present an optimized estimation of nanomask implantation parameters that are most likely to produce interacting qubits under standard conditions. We apply our findings to a well-established technique, namely masks written in electron-beam lithography, to create coupled defect pairs with a reasonable probability. Furthermore, we investigate the scaling behavior and necessary improvements to efficiently engineer interacting spin architectures.
description: Main article and supplementary information in one document. 20 pages, 11 figures
A note on the geometry and topology of almost even-Clifford Hermitian manifolds
Creators: name: Arizmendi, Gerardo
name: Garcia-Pulido, Ana Lucia
name: Herrera, Rafael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C10, 53C15

description: We compute the structure groups of almost even-Clifford Hermitian manifolds and determine when such groups lead to Spin structures.
Konzeption eines Telemetriesenders zum Übertragen von Beschleunigungsdaten im Rahmen von PhyPiDAQ
Creators: name: Eckerle, Philipp
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2022

description: Masterarbeit Ma.Ed. Physik: Aufbau, Test und Anwendung eines kostengünstigen Telemetriesenders zur igitalen Messwerterfassung mit dem Einplatinen-Computer Raspberry Pi im Physikunterricht.
Counting Contours on Trees
Creators: name: Alon, Noga
name: Bissacot, Rodrigo
name: Endo, Eric Ossami
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C05, 05-XX, 05Cxx, 82-XX, 05C30

description: We calculate the exact number of contours of size $n$ containing a fixed vertex in $d$-ary trees and provide sharp estimates for this number for more general trees. We also obtain a characterization of the locally finite trees with infinitely many contours of the same size containing a fixed vertex.
description: 12 pages, 2 figures
Conceptual Rover Design for Future Turkish Lunar Mission.pdf
Creators: name: kosoglu, barbaros teoman
name: boybasi, beste
name: kosker, oznur
name: altuntas, nurdeniz
name: yaglıoglu, burak
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 400107
subject: Satellite, space vehicle and missile design and testing

description: Moon missions are growing in popularity, with numerous nations such as Russia, China, and the USA, and commercial enterprises aiming to explore the lunar surface. Türkiye is also taking a step to become one of the pioneers in the space race, with the "National Space Program", introduced in 2020 by the Turkish Space Agency (TUA). One of the main pillars of the National Space Program is the Moon Research Program where two missions are planned with targets of reaching the Lunar orbit and then the surface through hard landing within a few years (AYAP-1) and delivering a rover to the surface through soft landing (AYAP-2). In this manner, a group of AYAP-1 scholarship students of TUBITAK UZAY-Space Technologies Research Institute and Space Exploration Society (UKET) members has performed a conceptual design for a small Lunar rover considering AYAP-2 (soft landing mission). UKET is the main organizer of the international Anatolian Rover Challenge, which is the first and only international rover challenge in Türkiye and it aims to cultivate competent engineers for the space industry for TUA and TUBITAK UZAY. In this paper, the design factors of the rover are discussed, including the choice of the instruments, the rover's size and mobility, payload capacity, subsystems, the technical budgets needed for development and operations, and the conceptual design of the rover itself. The main goal in designing the rover is to carry out scientific research focused on the physical properties of the landing site, detect and analyze the concentrations of different minerals and elements, measure the growth of organisms under the conditions of the Moon, and investigate how the mining capacity of microorganisms is effected from the lunar conditions.
Direct measurement of low-energy $^{22}$Ne(p,$γ$)$^{23}$Na resonances
Creators: name: Depalo, R.
name: Cavanna, F.
name: Aliotta, M.
name: Anders, M.
name: Bemmerer, D.
name: Best, A.
name: Boeltzig, A.
name: Broggini, C.
name: Bruno, C. G.
name: Caciolli, A.
name: Ciani, G. F.
name: Corvisiero, P.
name: Davinson, T.
name: Di Leva, A.
name: Elekes, Z.
name: Ferraro, F.
name: Formicola, A.
name: Fülöp, Zs.
name: Gervino, G.
name: Guglielmetti, A.
name: Gustavino, C.
name: Gyürky, Gy.
name: Imbriani, G.
name: Junker, M.
name: Menegazzo, R.
name: Mossa, V.
name: Pantaleo, F. R.
name: Piatti, D.
name: Prati, P.
name: Straniero, O.
name: Szücs, T.
name: Takács, M. P.
name: Trezzi, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The $^{22}$Ne(p,$γ$)$^{23}$Na reaction is the most uncertain process in the neon-sodium cycle of hydrogen burning. At temperatures relevant for nucleosynthesis in asymptotic giant branch stars and classical novae, its uncertainty is mainly due to a large number of predicted but hitherto unobserved resonances at low energy. Purpose: A new direct study of low energy $^{22}$Ne(p,$γ$)$^{23}$Na resonances has been performed at the Laboratory for Underground Nuclear Astrophysics (LUNA), in the Gran Sasso National Laboratory, Italy. Method: The proton capture on $^{22}$Ne was investigated in direct kinematics, delivering an intense proton beam to a $^{22}$Ne gas target. $γ$ rays were detected with two high-purity germanium detectors enclosed in a copper and lead shielding suppressing environmental radioactivity. Results: Three resonances at 156.2 keV ($ωγ$ = (1.48\,$\pm$\,0.10)\,$\cdot$\,10$^{-7}$ eV), 189.5 keV ($ωγ$ = (1.87\,$\pm$\,0.06)\,$\cdot$\,10$^{-6}$ eV) and 259.7 keV ($ωγ$ = (6.89\,$\pm$\,0.16)\,$\cdot$\,10$^{-6}$ eV) proton beam energy, respectively, have been observed for the first time. For the levels at 8943.5, 8975.3, and 9042.4 keV excitation energy corresponding to the new resonances, the $γ$-decay branching ratios have been precisely measured. Three additional, tentative resonances at 71, 105 and 215 keV proton beam energy, respectively, were not observed here. For the strengths of these resonances, experimental upper limits have been derived that are significantly more stringent than the upper limits reported in the literature. Conclusions: Based on the present experimental data and also previous literature data, an updated thermonuclear reaction rate is provided in tabular and parametric form. The new reaction rate is significantly higher than previous evaluations at temperatures of 0.08-0.3 GK.
description: Submitted to Phys. Rev. C
Long-term eclipse timing of white dwarf binaries: an observational hint of a magnetic mechanism at work
Creators: name: Bours, M. C. P.
name: Marsh, T. R.
name: Parsons, S. G.
name: Dhillon, V. S.
name: Ashley, R. P.
name: Bento, J. P.
name: Breedt, E.
name: Butterley, T.
name: Caceres, C.
name: Copperwheat, C. M.
name: Hardy, L. K.
name: Hermes, J. J.
name: Irawati, P.
name: Kerry, P.
name: Kilkenny, D.
name: Littlefair, S. P.
name: McAllister, M. J.
name: Rattanasoon, S.
name: Sahman, D. I.
name: Vuckovic, M.
name: Wilson, R. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a long-term programme for timing the eclipses of white dwarfs in close binaries to measure apparent and/or real variations in their orbital periods. Our programme includes 67 close binaries, both detached and semi-detached and with M-dwarfs, K-dwarfs, brown dwarfs or white dwarfs secondaries. In total, we have observed more than 650 white dwarf eclipses. We use this sample to search for orbital period variations and aim to identify the underlying cause of these variations. We find that the probability of observing orbital period variations increases significantly with the observational baseline. In particular, all binaries with baselines exceeding 10 yrs, with secondaries of spectral type K2 -- M5.5, show variations in the eclipse arrival times that in most cases amount to several minutes. In addition, among those with baselines shorter than 10 yrs, binaries with late spectral type (>M6), brown dwarf or white dwarf secondaries appear to show no orbital period variations. This is in agreement with the so-called Applegate mechanism, which proposes that magnetic cycles in the secondary stars can drive variability in the binary orbits. We also present new eclipse times of NN Ser, which are still compatible with the previously published circumbinary planetary system model, although only with the addition of a quadratic term to the ephemeris. Finally, we conclude that we are limited by the relatively short observational baseline for many of the binaries in the eclipse timing programme, and therefore cannot yet draw robust conclusions about the cause of orbital period variations in evolved, white dwarf binaries.
description: 16 pages, 12 figures
Compilation of selective pulse network on liquid-state nuclear magnetic resonance system
Creators: name: Li, Jun
name: Cui, Jiangyu
name: Laflamme, Raymond
name: Peng, Xinhua
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In creating a large-scale quantum information processor, the ability to construct control pulses for implementing an arbitrary quantum circuit in a scalable manner is an important requirement. For liquid-state nuclear magnetic resonance (NMR) quantum computing, a circuit is generally realized through a sequence of selective soft pulses, in which various control imperfections exist and are to be corrected. In this work, we present a comprehensive analysis of the errors arisen in a selective pulse network by using the zeroth and first order average Hamiltonian theory. Effective correction rules are derived for adjusting important pulse parameters such as irradiation frequencies, rotational angles and transmission phases of the selective pulses to increase the control fidelity. Simulations show that applying our compilation procedure for a given circuit is efficient and can greatly reduce the error accumulation.
description: 12 pages, 6 figures; RevTeX4
Practices and Challenges of Job Evaluation and Grading (JEG) in the Ethiopian Public Sector: The Case of Selected Grad I Town Administrations in Oromia Regional State
Creators: name: Kacho, Bersisa
Publisher: name: African Journal of Leadership and Development
Year: 2021

description: The purpose of this research was to assess the practices and challenges of job evaluation and grading in grade one city administrations of Oromia Regional State. Descriptive research design and mixed research approach were used. Both probability and non-probability techniques were used. Random sampling technique was used to select ten cities from the 19 grade one city administrations in the region. Hence, using proportional random sampling technique, 1000 civil servants were taken for this study. Questionnaire, focus group discussions and key informant interview were the methods used for data collection. Whereas descriptive statistics has been used to analyse quantitative data, thematization and narration method were utilized for qualitative data. The findings revealed that while the level of transparency during employees’ placement was moderate, the level of accountability and employees’ participation was low. Moreover, some city administrations not only compromised merit principles but they also failed to get committed to apply the principle of placing the right person at the right position. Employees not only lacked confidence with the employees’ placement committee but they also were desperate about their future career development Other challenges reported included payment related problems, interferences from the top, unfair composition of employee placement committee as well as criteria used. The researchers concluded that there were both success and failure story recorded during the implementation of the program. The study recommended that before any reform implementation the concerned body must improve knowledge and awareness level of its stakeholders. It was also recommended that public sectors and other stakeholders should be committed and responsible to manage any implementation of reform initiatives without politically motivated behaviour.
description: African Journal of Leadership and Development, Vol. 6 No. 1 (2021): Job Performance
Microstructural rearrangements and their rheological implications in a model Thixotropic Elasto-Visco-Plastic (TEVP) fluid
Creators: name: Jamali, Safa
name: McKinley, Gareth H.
name: Armstrong, Robert C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We identify the sequence of microstructural changes that characterize the evolution of an attractive particulate gel under flow and discuss their implications on macroscopic rheology. Dissipative Particle Dynamics (DPD) is used to monitor shear-driven evolution of a fabric tensor constructed from the ensemble spatial configuration of individual attractive constituents within the gel. By decomposing this tensor into isotropic and non-isotropic components we show that the average coordination number correlates directly with the flow curve of the shear stress vs. shear rate, consistent with theoretical predictions for attractive systems. We show that the evolution in non-isotropic local particle rearrangements are primarily responsible for stress overshoots (strain-hardening) at the inception of steady shear flow and also lead, at larger times and longer scales, to microstructural localization phenomena such as shear banding flow-induced structure formation in the vorticity direction.
description: 15 pages, 4 figures
Measuring the degeneracy of discrete energy levels using a GaAs/AlGaAs quantum dot
Creators: name: Hofmann, Andrea
name: Maisi, Ville F.
name: Gold, Carolin
name: Krähenmann, Tobias
name: Rössler, Clemens
name: Basset, Julien
name: Märki, Peter
name: Reichl, Christian
name: Wegscheider, Werner
name: Ensslin, Klaus
name: Ihn, Thomas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate an experimental method for measuring quantum state degeneracies in bound state energy spectra. The technique is based on the general principle of detailed balance, and the ability to perform precise and efficient measurements of energy-dependent tunnelling-in and -out rates from a reservoir. The method is realized using a GaAs/AlGaAs quantum dot allowing for the detection of time-resolved single-electron tunnelling with a precision enhanced by a feedback-control. It is thoroughly tested by tuning orbital and spin-degeneracies with electric and magnetic fields. The technique also lends itself for studying the connection between the ground state degeneracy and the lifetime of the excited states.
description: Accepted for publication as a Letter in Physical Review Letters
Community Preparation and Competency Development for Ecotourism Management in the Wang Nam Khiao-Pha Khao Phu Luang Forest Reserve
Creators: name: Nongluck Manowaluilou
Publisher: name: Assumption University
Year: 2022
Subjects: ecotourism
forest reserve
tourism development
tourism management
training

description: ABAC Journal, 42, 4, 135-152
The Current Status of Prime Focus Instrument of Subaru Prime Focus Spectrograph
Creators: name: Wang, Shiang-Yu
name: Schwochert, Mark A.
name: Huang, Pin-Jie
name: Chen, Hsin-Yo
name: Kimura, Masahiko
name: Chou, Richard C. Y.
name: Chang, Yin-Chang
name: Hu, Yen-Sang
name: Ling, Hung-Hsu
name: Morantz, Chaz N.
name: Reiley, Dan J.
name: Mao, Peter
name: Braun, David F.
name: Wen, Chih-Yi
name: Yan, Chi-Hung
name: Karr, Jennifer
name: Gunn, James E.
name: Murray, Graham
name: Tamura, Naoyuki
name: Takato, Naruhisa
name: Shimono, Atsushi
name: Ferreira, Decio
name: Santosh, Leandro Henriqu dos
name: Oliveira, Ligia Souza
name: de Oliveira, Antonio Cesar
name: Marrara, Lucas Souza
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Prime Focus Spectrograph (PFS) is a new optical/near-infrared multi-fiber spectrograph design for the prime focus of the 8.2m Subaru telescope. PFS will cover 1.3 degree diameter field with 2394 fibers to complement the imaging capability of Hyper SuprimeCam (HSC). The prime focus unit of PFS called Prime Focus Instrument (PFI) provides the interface with the top structure of Subaru telescope and also accommodates the optical bench in which Cobra fiber positioners are located. In addition, the acquisition and guiding cameras (AGCs), the optical fiber positioner system, the cable wrapper, the fiducial fibers, illuminator, and viewer, the field element, and the telemetry system are located inside the PFI. The mechanical structure of the PFI was designed with special care such that its deflections sufficiently match those of the HSC's Wide Field Corrector (WFC) so the fibers will stay on targets over the course of the observations within the required accuracy. In this report, the latest status of PFI development will be given including the performance of PFI components, the setup and performance of the integration and testing equipment.
description: 9 pages, 8 figures, SPIE proceeding
Anisotropic type-I superconductivity and anomalous superfluid density in OsB 2
Creators: name: Bekaert, Jonas
name: Vercauteren, Stephan
name: Aperis, Alexandros
name: Komendova, Lucia
name: Prozorov, Ruslan
name: Partoens, Bart
name: Milosevic, Milorad
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a microscopic study of superconductivity in OsB2 , and discuss the origin and characteristic length scales of the superconducting state. From first-principles we show that OsB2 is characterized by three different Fermi sheets, and we prove that this fermiology complies with recent quantum-oscillation experiments. Using the found microscopic properties, and experimental data from the literature, we employ Ginzburg-Landau relations to reveal that OsB2 is a distinctly type-I superconductor with very low Ginzburg-Landau parameter kappa - a rare property among compound materials. We show that the found coherence length and penetration depth corroborate the measured thermodynamic critical field. Moreover, our calculation of the superconducting gap structure using anisotropic Eliashberg theory and ab initio calculated electron-phonon interaction as input reveals a single but anisotropic gap. The calculated gap spectrum is shown to give an excellent account for the unconventional behavior of the superfluid density of OsB2 measured in experiments as a function of temperature. This reveals that gap anisotropy can explain such behavior, observed in several compounds, which was previously attributed solely to a two-gap nature of superconductivity.