cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Separating Pathways in Double-Quantum Optical Spectroscopy Reveals Excitonic Interactions
Creators: name: Tollerud, Jonathan
name: Davis, Jeffrey
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Techniques for coherent multidimensional optical spectroscopy have been developed and utilised to understand many different processes, including energy transfer in photosynthesis and many-body effects in semiconductor nanostructures. Double-quantum 2D spectroscopy is one variation that has been particularly useful for understanding many-body effects. In condensed matter systems, however, there are often many competing signal pathways, which can make it difficult to isolate different contributions and retrieve quantitative information. Here, a means of separating overlapping pathways while maintaining the fidelity of the relevant peak/s is demonstrated. This selective approach is used to isolate the double-quantum signal from a mixed two exciton state in a semiconductor quantum well. The removal of overlapping peaks allows analysis of the relevant peak-shape and thus details of interactions with the environment and other carriers to be revealed. An alternative pulse ordering identifies a double-quantum state associated only with GaAs defects, the signature of which has previously been confused with other interaction induced effects. The experimental approach described here provides access to otherwise hidden details of excitonic interactions and demonstrates that the manner in which the double-quantum coherence is generated can be important and provide an additional control to help understand the many-body physics in complex systems.
Challenges of Deposit Mobilization for Private Commercial Banks in Ethiopia (The Case of Awash International Bank S.C.)
Creators: name: Tesfahunegn, Samuel
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: This study intends to identify the challenges in deposit mobilization for private banks in Ethiopia by concentrating the case on Awash International Bank s.c, Descriptive method particularly survey design approach was adopted for the study. The survey was conducted with staff individuals working in Awash International Bank s.c at different positions using questionnaire. In addition, the study used unstructured review of documents and records held by other commercial banks and NBE. The study identifies that AIB is registering a continuous deposit growth for the last few years. Individuals, business organizations and NGOs are the major source of deposit for AIB. The findings of the study show that AIB and other private banks are operating in a dynamic and highly competitive environment and there is high possibility of catch-up and by-pass among these banks. Also, private commercial banks should prepare for the inevitable stiff competition that will arise from local and with the eminent future entrant of foreign banks. By doing so, they can solve the paradox of the liquidity problem and the unbanked resources.
Numerical magneto-hydrodynamics for relativistic nuclear collisions
Creators: name: Inghirami, Gabriele
name: Del Zanna, Luca
name: Beraudo, Andrea
name: Moghaddam, Mohsen Haddadi
name: Becattini, Francesco
name: Bleicher, Marcus
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present an improved version of the ECHO-QGP numerical code, which self-consistently includes for the first time the effects of electromagnetic fields within the framework of relativistic magnetohydrodynamics (RMHD). We discuss results of its application in relativistic heavy-ion collisions in the limit of infinite electrical conductivity of the plasma. After reviewing the relevant covariant $3\!+\!1$ formalisms, we illustrate the implementation of the evolution equations in the code and show the results of several tests aimed at assessing the accuracy and robustness of the implementation. After providing some estimates of the magnetic fields arising in non-central high-energy nuclear collisions, we perform full RMHD simulations of the evolution of the Quark-Gluon Plasma in the presence of electromagnetic fields and discuss the results. In our ideal RMHD setup we find that the magnetic field developing in non-central collisions does not significantly modify the elliptic-flow of the final hadrons. However, since there are uncertainties in the description of the pre-equilibrium phase and also in the properties of the medium, a more extensive survey of the possible initial conditions as well as the inclusion of dissipative effects are indeed necessary to validate this preliminary result.
description: 19 pages, 14 figures, vers. 3: final version, with minor changes in the text (introduction and conclusions)
D7.3 Communication and Dissemination Report (months 6-18) and Plan for months 19-36
Creators: name: Basset Sheena
Publisher: name: Zenodo
Year: 2022

description: This report describes the strategy adopted and results from the dissemination and communication activities for the 4CH Project such as the web site and other communication channels for months 6-18. It also covers the strategy planned for the communication and dissemination from months 19-36 based on the current situation (e.g. events are now tending to be either online or hybrid) and an assessment of the results of the first period which has been used to inform the proposed approach.
Random walk in degree space and the time-dependent Watts-Strogatz model
Creators: name: Grande, H. L. Casa
name: Cotacallapa, M.
name: Hase, M. O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this work, we propose a scheme that provides an analytical estimate for the time-dependent degree distribution of some networks. This scheme maps the problem into a random walk in degree space, and then we choose the paths that are responsible for the dominant contributions. The method is illustrated on the dynamical versions of the Erdös-Rényi and Watts-Strogatz graphs, which were introduced as static models in the original formulation. We have succeeded in obtaining an analytical form for the dynamics Watts-Strogatz model, which is asymptotically exact for some regimes.
Parasitic Momentum Flux in the Tokamak Core
Creators: name: Stoltzfus-Dueck, T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A geometrical correction to the E x B drift causes an outward flux of cocurrent momentum whenever electrostatic potential energy is transferred to ion parallel flows. The robust symmetry breaking follows from the free energy flow in phase space and does not depend on any assumed linear eigenmode structure, acting both for axisymmetric fluctuations (such as geodesic acoustic modes) as well as more general nonaxisymmetric fluctuations. The resulting rotation peaking is countercurrent and scales as electron temperature over plasma current. This peaking mechanism can only act when fluctuations are low-frequency enough to excite ion parallel flows, which may explain some recent experimental observations related to rotation reversals.
The Influence Of Integrated Marketing Communication On Brand Prefrence: The Case Of Coca-Cola Ethiopia
Creators: name: Seid, Wasihun
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The main aim of this research was to understand the influence of integrated marketing communication on brand preference in case of Coca-Cola in Ethiopia. Five elements of integrated marketing communication as determinants of band preference: advertising, sales promotion, personal selling, direct marketing, publicity and public relation have been kept in mind while doing this research. The study used both qualitative and quantitative techniques in which 385 respondents from Addis Ababa were included. In this study, structured questionnaire for consumers of Coca-Cola were identified through simple random sampling. The researcher used person correlation and regression analysis to analyze the data. The result of the study shows that integrated marketing communication has a favorable influence on brand preference of Coca-cola since it allows customers to have awareness about the brand and built a positive attitude as well. Based on the findings the major recommendations are: Coca-cola need to analyze the changing preferences of consumers and act as per this change while formulating and implementing IMC practices, Coca-Cola's IMC practices should be research based and advertising has to be use both national and mother tang language of nationalities in order to advertise the products through the most potent media and by credible sources
Minimal but non-minimal inflation and electroweak symmetry breaking
Creators: name: Marzola, Luca
name: Racioppi, Antonio
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the most minimal scale invariant extension of the standard model that allows for successful radiative electroweak symmetry breaking and inflation. The framework involves an extra scalar singlet, that plays the rôle of the inflaton, and is compatibile with current experimental bounds owing to the non-minimal coupling of the latter to gravity. This inflationary scenario predicts a very low tensor-to-scalar ratio $r \approx 10^{-3}$, typical of Higgs-inflation models, but in contrast yields a scalar spectral index $n_s \simeq 0.97$ which departs from the Starobinsky limit. We briefly discuss the collider phenomenology of the framework.
description: 7 pages, 1 figure, 1 table, revised version published on JCAP
MultiMediate'23: Engagement Estimation and Bodily Behaviour Recognition in Social Interactions
Creators: name: Müller, Philipp
name: Balazia, Michal
name: Baur, Tobias
name: Dietz, Michael
name: Heimerl, Alexander
name: Schiller, Dominik
name: Guermal, Mohammed
name: Thomas, Dominike
name: Brémond, François
name: Alexandersson, Jan
name: André, Elisabeth
name: Bulling, Andreas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Automatic analysis of human behaviour is a fundamental prerequisite for the creation of machines that can effectively interact with- and support humans in social interactions. In MultiMediate'23, we address two key human social behaviour analysis tasks for the first time in a controlled challenge: engagement estimation and bodily behaviour recognition in social interactions. This paper describes the MultiMediate'23 challenge and presents novel sets of annotations for both tasks. For engagement estimation we collected novel annotations on the NOvice eXpert Interaction (NOXI) database. For bodily behaviour recognition, we annotated test recordings of the MPIIGroupInteraction corpus with the BBSI annotation scheme. In addition, we present baseline results for both challenge tasks.
description: ACM MultiMedia'23
Characterization of Maximally Random Jammed Sphere Packings: II. Correlation Functions and Density Fluctuations
Creators: name: Klatt, Michael A.
name: Torquato, Salvatore
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences
subject: 82D30, 62H20, 05B40, 62M30, 82D15

description: In the first paper of this series, we introduced Voronoi correlation functions to characterize the structure of maximally random jammed (MRJ) sphere packings across length scales. In the present paper, we determine a variety of correlation functions that can be rigorously related to effective physical properties of MRJ sphere packings and compare them to the corresponding statistical descriptors for overlapping spheres and equilibrium hard-sphere systems. Such structural descriptors arise in rigorous bounds and formulas for effective transport properties, diffusion and reactions constants, elastic moduli, and electromagnetic characteristics. First, we calculate the two-point, surface-void, and surface-surface correlation functions, for which we derive explicit analytical formulas for finite hard-sphere packings. We show analytically how the contacts between spheres in the MRJ packings translate into distinct functional behaviors of these two-point correlation functions that do not arise in the other two models examined here. Then, we show how the spectral density distinguishes the MRJ packings from the other disordered systems in that the spectral density vanishes in the limit of infinite wavelengths. These packings are hyperuniform, which means that density fluctuations on large length scales are anomalously suppressed. Moreover, we study and compute exclusion probabilities and pore size distributions as well as local density fluctuations. We conjecture that for general disordered hard-sphere packings, a central limit theorem holds for the number of points within an spherical observation window. Our analysis links problems of interest in material science, chemistry, physics, and mathematics. In the third paper, we will evaluate bounds and estimates of a host of different physical properties of the MRJ sphere packings based on the structural characteristics analyzed in this paper.
description: 25 pages, 13 Figures; corrected typos, updated references
Evidence of the mixed phase formation in nucleus-nucleus collisions
Creators: name: Sagun, V. V.
name: Bugaev, K. A.
name: Ivanytskyi, A. I.
name: Oliinychenko, D. R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Searchers for various irregularities in the behavior of thermodynamic quantities at chemical freeze-out (CFO) are rather important in a view of experimental studies of quark-gluon plasma (QGP). Using the multicomponent hadron resonance gas model (HRGM), developed in (Sagun, 2014; Bugaev et al., 2015), we performed a high-quality fit of 111 hadronic ratios measured for 14 values of the center of mass collision energies between 2.7 GeV and 200 GeV with the overall fit quality $χ^2/dof \simeq 0.95$. In addition to previously reported singularities (Bugaev et al., 2015) at CFO we found that the hadron yield ratios $\fracΛ{p}$, $\frac{K^{+}}{p}$, $\frac{K^{+}}Λ$, $\frac{Ω^{-}}{p}$ and $\frac{Ξ^{-}}{p}$ measured in central nuclear collisions demonstrate a significant change of slope in the same range of center of mass collision energy $\sqrt{s_{NN}} = 4.3-4.9$ GeV (Bugaev et al., 2015). This change of slopes is accompanied by a dramatic increase of resonance decays at CFO. Also at CFO the trace anomaly and baryonic density demonstrate the pronounced peaks at the collision energy $\sqrt{s_{NN}} = 4.9 $ GeV. We argue that all these and previously found irregularities provide an evidence for the QGP formation in nuclear collisions at about $\sqrt{s_{NN}} = 4.9 $ GeV.
description: Proceedings of the Week of Doctoral Students (WDS) 2016 Conference, 6 pages, 4 figures
Productivity in footwear and garment sector in Addis Ababa
Creators: name: Abebe, Feyera
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2012

description: Productivity is a summary measure of the quantity and quality of work performance with resource utilization considered. Regardless of the type of production, the basic concept is always the relationship between the quality and quantity of goods or service produced and the quantity of resource used to produce them. The garment and footwear sectors were chosen as main area of focus to explore factors influencing productivity so that it can be enhanced by managing these factors. Survey study was conducted by selecting the sample organization of garment and footwear sectors purposively by considering the organizations' size, availability of necessary information and their role in their respective sector. The major factors that affect productivity of the organizations are found to be capital, labor, intermediate materials, market demand, competition, government rule and regulation, workers motivation and satisfaction, research and development, innovation, technology, and production equipment.
Quelles réponses les hygiénistes peuvent-ils apporter aux particularités des établissements d’hébergement pour personnes âgées dépendantes ?
Creators: name: Chaize, Pascale
name: Chapuis, Catherine
Publisher: name: Health & Co
Year: 2023
Subjects: Ehpad
Compétences professionnelles
Prévention des infections

description: Le défi de la prévention du risque infectieux en Ehpad est de maintenir un juste équilibre entre les mesures à mettre en œuvre lors des soins et le maintien des attendus inhérents à ces lieux de vie collective. À partir de la méthode des 5M, cet article répertorie les points de levier dont disposent les équipes d’hygiène pour la prévention du risque infectieux (PRI). L’aide à l’application des précautions standard reste la base, en particulier l’hygiène des mains et la prévention du risque fécal. Ainsi, la majorité des résidents étant incontinents, il convient d’accompagner l’établissement dans l’analyse et la gestion des excreta. La gestion des phénomènes à potentiel épidémique est une activité phare qui se heurte parfois aux principes de la vie au sein de ces établissements. Les équipes d’hygiène peuvent guider les Ehpad afin que l’organisation des locaux favorise la fluidité des soins et la prévention du risque infectieux. Elles les accompagnent également dans la gestion du risque de légionellose et pour l’achat de matériel et de consommables en lien avec la PRI. Le renforcement de la formation et de la qualification des personnels soignants et le développement d’actions d’évaluation sont indispensables pour améliorer la qualité de la prise en charge des résidents. L’épidémie de Covid-19 a mis en lumière le besoin d’accompagnement des Ehpad et a confirmé l’intérêt des équipes mobiles d’hygiène. Leur intervention doit être pragmatique et proche du terrain, avec un programme adapté à chaque structure. L’objectif final est d’allier prévention du risque infectieux et maintien de la vie sociale et familiale des résidents et de leur liberté d’aller et venir.
MPEC 2023-E94 : 2023 EP1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 EP1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Workshop "Alterações Climáticas, Saúde Humana e Incêndios Rurais"
Creators: name: Mónica Rodrigues
name: Fantina Tedim
Publisher: name: Zenodo
Year: 2023

description: O caráter complexo das alterações climáticas são, sem dúvida, um dos maiores desafios societais, tendo-se vindo a revelar como multiplicador de risco, interagindo com outros fatores que aumentam a vulnerabilidade humana. Recentemente, o relatório publicado pelo Painel Intergovernamental para as Alterações Climáticas (IPCC, 2022) enfatiza a interdependência entre clima, ecossistemas, biodiversidade e sociedades humanas. Evidencia ainda que precisamos de discutir os mecanismos que subjazem à vulnerabilidade, incluindo a saúde e bem-estar da população, a justiça social, a demografia, de modo a reforçar a resiliência dos países e capacidade de adaptação às alterações climáticas. Portugal foi o primeiro país a reconhecer o clima estável como Património Comum da Humanidade, através da publicação da Lei de Bases do Clima (Lei n.º 98/2021), aprovada pela Assembleia da República em 31 de dezembro de 2021. Este instrumento legal estabelece novas disposições em termos de política climática, e vem consolidar objetivos, princípios e obrigações dos diferentes níveis de governação para a ação climática através de políticas públicas. A Lei de Bases do Clima está alinhada com as metas do Acordo de Paris e do Pacto Ecológico Europeu.

Este evento multissetorial e multidisciplinar, que reúne membros da academia e de organismos do estado (Assembleia da República, Direção Geral da Saúde, Ministério do Ambiente e Ação Climática, Agência Portuguesa do Ambiente), pretende discutir aspetos prementes da adaptação climática em diferentes setores, como a saúde, os incêndios rurais, de modo a alcançar as metas propostas pelos Objetivos de Desenvolvimento Sustentável (ODS) das Nações Unidas.
Assessing the Role of Development partners on Agricultural Extension Delivery: the Case of Sasakawa Global 2000 Ethiopia in Gumer Woreda
Creators: name: Tamrat, Temesgen
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: This thesis assesses the role of Sasakawa Global 2000 Ethiopia on agricultural extension delivery in Gumer woreda, SNNP, Ethiopia. The study has been focused on examining achievements and challenges of the implementation of SEADE project implemented by SG 2000 Ethiopia collaborating with stakeholders funded by Bill & Melinda Gates Foundation. The objective of the study is to evaluate the achievements and challenges of SEADE project to increase productivity of smallholder farmers by strengthen the agricultural extension delivery in Gumer woredas. In doing this, exploratory and explanatory approaches with qualitative and quantitative methods are employed. However, the research has involved more of qualitative than quantitative method. Purposive and random sampling techniques are employed in order to select the study sites within Gumer Wereda and study respondents respectively. To collect the required primary source of data, instruments of data collection which include questionnaire, interview, focus group discussion and practical site observation were used. Secondary source of data to strengthen the primary source of data was also carefully examined. In the study, it is revealed that Regarding research findings, erratic rainfall, low soil fertility, fragmented land of households, lack of education, shortage of capital and high cost of agricultural inputs, limit of credit access constrained the households while participating the SEADE project .Based on the results, the study concluded that SEAD project was valuable and relevant to smallholder farmers' agricultural activity needs and agricultural productivity of the study area. The major recommendations put forwarded are accelerating the agricultural extension delivery sustainably; capacitating and motivating with attractive incentive of DAs; timely provision of agricultural inputs and subsides; facilitating market linkage both for farm inputs and products by development partners; increasing the number of FTCs; and finally using low cost water harvest irrigation technologies with high yielding varieties and related packages. Key words : agricultural extension delivery, Sasakawa Global 2000 Ethiopia, Bill & Melinda Gates Foundation, Gumer woreda, smallholder farmers, SEADE project
Study of open clusters within 1.8 kpc and understanding the Galactic structure
Creators: name: Joshi, Yogesh C.
name: Dambis, Andrei
name: Pandey, Anil K.
name: Joshi, Santosh
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Based on an almost complete sample of Galactic open star clusters within 1.8 kpc, we perform a comprehensive statistical analysis of various cluster parameters like spatial position, age, size, mass and extinction in order to understand the general properties of the open cluster system in the Galaxy and the Galactic structure. Based on the distribution of 1241 open clusters about the Galactic plane and in different age bins, we find the average Galactic scale height as Zh = 60+/-2 pc for the youngest cluster population having Age <700 Myr, however, it increases up to 64+/-2 pc when we also include older population of clusters. The solar offset is found to be 6.2+/-1.1 pc above the formal Galactic plane. We derive a local mass density of ρ_0 = 0.090+/-0.005 Msun/pc^3 and found a negligibly small amount of dark matter in the solar neighbourhood. The reddening in the direction of clusters suggests a strong correlation with their vertical distance from the Galactic plane having a respective slope of dE(B-V)/dz = 0.40+/-0.04 and 0.42+/-0.05 mag/kpc below and above the GP. We observe a linear mass-radius and mass-age relations in the open clusters and derive a slope of dR/d(logM) = 2.08+/-0.10 and d(logM)/d(logT) = -0.36+/-0.05,respectively.
description: 13 pages, 13 figures, 2016, A&A, 593, 116
Thermal Anisotropy Enhanced by Phonon Size Effects in Nanoporous Materials
Creators: name: Romano, Giuseppe
name: Kolpak, Alexie M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: While thermal anisotropicity is a desirable materials property for many applications, including transverse thermoelectrics and thermal management in electronic devices, it remains elusive in practical natural compounds. In this work, we show how nanoporous materials with anisotropic pore lattices can be used as a platform for inducing strong heat transport directionality in isotropic materials. Using density functional theory and the phonon Boltzmann transport equation, we calculate the phonon-size effects and thermal conductivity of nanoporous silicon with different anisotropicpore lattices. Our calculations predict a strong directionality in the thermal conductivity, dictated by the difference in the pore-pore distances along the two Cartesian axes. As the space between pores along the direction of the applied temperature gradient represents the phonon bottleneck, an anisotropic pores lattice distortion induces directionality in heat transport. Using Fourier's law, we also compute diffusive heat transport for the same geometries obtaining significantly smaller anisotropicity, revealing the crucial role of phonon-size effects in tuning thermal transport directionality. Besides enhancing our understanding of nanoscale heat transport, our results demonstrate the promise of nanoporous materials for modulating anisotropy in thermal conductivity.
The Challenges of Implementing Performance Based Pay System: the Case of Ethio-Telecom
Creators: name: Muluneh, Yoseph
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: The study sought to assess the Challenges of Implementing Performance-Based Pay System in the case of Ethio-Telecom. In this research, a case study approach was employed. To realize the objectives of this research, both qualitative and quantitative data were collected from the target study population. To this effect, 39 raters from the management and supervisors as well as 390 employees of the organization working in Addis Ababa in different divisions were selected using a non-probability sampling technique. Two sets of Close-ended questionnaires were employed for data collection instrument from both group and five managers who work in the HR Division were interviewed. Then the response was analyzed using a simple statistical tool. The findings of the research show that target and goals of the organization is not communicated to all level in the same manner and the claimed current performance management system as well as the performance measurement tools are not appropriately used to measure performance of employees. Consequently, the performance-based pay system that was introduced in the previous year was merely based on subjective assessment of employees by their raters rather than evaluation based on set objectives that could measure actual performance. The research indicates that there is lack of link between employees' performance and the pay system in the organization
Photoexcited Carriers Recombination And Trapping In Spherical Vs Faceted TiO2 Nanoparticles
Creators: name: Fazio, Gianluca
name: Ferrighi, Lara
name: Di Valentin, Cristiana
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanoparticles of very small size (below 10 nm) of TiO2 material are nowadays the functional building blocks of many developing technological applications. Nano is clearly different from bulk or extended systems as regards surface area, molecular binding properties, charge separation efficiency, electron/hole transport, photochemical conversion properties, etc. In this work, we investigate the life path of energy (excitons) and charge (electrons and holes) carriers in anatase TiO2 nanoparticles of different size (2-3 nm) and shape (faceted vs spherical), by means of a wide set of hybrid density functional theory calculations. The attention is focused on the exciton/charge carriers formation, separation, recombination, self-trapping processes, which are analyzed in terms of structural deformations, energy gain or cost, charge localization/delocalization and electronic transitions involved. The computational models are corroborated by an extensive comparison with available experimental data based on photoluminescence measurements, electron paramagnetic resonance and transient absorption spectroscopies. Peculiar differences are observed for spherical nanoparticles with respect to faceted ones because of the higher disorder and larger diversity of coordination sites present on the surface. For example, charge delocalization on several lattice sites is more competitive with self-trapping processes in faceted than in spherical nanoparticles. This relates to the fact that selective compression or elongation of Ti-O bonds play a key role in determining the effectiveness of trapping sites, with spherical nanoparticles being more flexible. Moreover, hydroxyl groups on surface five-fold coordinated Ti sites are also found to be good hole trapping sites.
Detecting Olives with Synthetic or Real Data? Olive the Above
Creators: name: Karabatis, Yianni
name: Lin, Xiaomin
name: Sanket, Nitin J.
name: Lagoudakis, Michail G.
name: Aloimonos, Yiannis
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Modern robotics has enabled the advancement in yield estimation for precision agriculture. However, when applied to the olive industry, the high variation of olive colors and their similarity to the background leaf canopy presents a challenge. Labeling several thousands of very dense olive grove images for segmentation is a labor-intensive task. This paper presents a novel approach to detecting olives without the need to manually label data. In this work, we present the world's first olive detection dataset comprised of synthetic and real olive tree images. This is accomplished by generating an auto-labeled photorealistic 3D model of an olive tree. Its geometry is then simplified for lightweight rendering purposes. In addition, experiments are conducted with a mix of synthetically generated and real images, yielding an improvement of up to 66% compared to when only using a small sample of real data. When access to real, human-labeled data is limited, a combination of mostly synthetic data and a small amount of real data can enhance olive detection.
Directional Searches at DUNE for Sub-GeV Monoenergetic Neutrinos Arising from Dark Matter Annihilation in the Sun
Creators: name: Rott, Carsten
name: In, Seongjin
name: Kumar, Jason
name: Yaylali, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the use of directionality in the search for monoenergetic sub-GeV neutrinos arising from the decay of stopped kaons, which can be produced by dark matter annihilation in the core of the Sun. When these neutrinos undergo charged-current interactions with a nucleus at a neutrino detector, they often eject a proton which is highly peaked in the forward direction. The direction of this track can be measured at DUNE, allowing one to distinguish signal from background by comparing on-source and off-source event rates. We find that directional information can enhance the signal to background ratio by up to a factor of 5.
description: 14 pages, 3 figures; joint $e$ and $\mu$ analysis added and $\mu$ sensitivity curve corrected
Inchworm Monte Carlo for exact non-adiabatic dynamics II. Benchmarks and comparison with established methods
Creators: name: Chen, Hsing-Ta
name: Cohen, Guy
name: Reichman, David R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this second paper of a two part series, we present extensive benchmark results for two different inchworm Monte Carlo expansions for the spin-boson model. Our results are compared to previously developed numerically exact approaches for this problem. A detailed discussion of convergence and error propagation is presented. Our results and analysis allow for an understanding of the benefits and drawbacks of inchworm Monte Carlo compared to other approaches for exact real-time non-adiabatic quantum dynamics.
description: 10 pages, 8 figures
The Effect Of Service Quality On Customer Satisfaction: The Case Of Ministry Of Trade
Creators: name: Mune, Amelework
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The public sector is under increasing pressure to demonstrate that their services are customerfocused and that continuous performance improvement is being delivered. The aim of this research was to assess the effect of service quality on customer satisfaction in case of ministry of trade. The researcher was used information from the respondents. A total 176 sample were used to collect date.The primary data was collected using open and closed questionnaire for customers and interview for managers of ministry of trade. To substantiate the primary data the researcher used secondary data from published and unpublished bulletin, annual reports, literatures, observed and ministry of trade web site. After collecting the data the researcher was used quantitative and qualitative data analysis method. Quantitative data were analyzed using descriptive andlinear regression statistics with the help of SPSS 20.0 version software, table, Percentages, reliability test and problem score analysis were used in analyzing the collected data. From the analysis major findings reveal that quality of service does strongly effect the customer satisfaction and it was found out that the overall service quality perceived by the customers was not satisfactory, that expectations were higher than perceptions. Customers were not satisfied with service. The results and findings showed that the ministry of trade lacks information concerning customers' needs, wants, expectation and their satisfaction. Therefore, above customers' expectationby assessing all the service quality dimensions regularly and timely amending the rule and regulation, improve procedures, and hiring competent employees so on. It will also contribute to research since this study sets the ground for further research in measuring service quality in other branches and in the service sector.
X-ray flashes powered by the spindown of long-lived neutron stars
Creators: name: Ciolfi, Riccardo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: X-ray flashes (XRFs) are a class of high-energy transients whose nature is still open to question. Similar in many aspects to common gamma-ray bursts (GRBs), their strong X-ray emission is accompanied by very low or absent emission in the gamma-ray band. Despite this key difference, a number of indications have consolidated the idea that XRFs and GRBs share a common origin, including a number of potential XRF/supernova associations and the consistency of some XRFs with the Amati relation for long GRBs. However, the difficulties in explaining XRFs as off-axis or intrinsically weak GRBs still cast doubts on this interpretation. Here we explore the possibility that some XRFs are instead powered by the spindown of a long-lived neutron star (NS) formed in a binary NS (BNS) merger or, possibly, in a core-collapse supernova. Focusing on XRF 020903 and a few other cases observed by HETE-2, we show that their lack of gamma-ray emission, spectral properties, duration and X-ray luminosity find a natural explanation within our hypothesis. Moreover, we point out that the agreement of XRF 020903 with the Amati and Ghirlanda relations for long GRBs is respectively only marginal and problematic. Assuming a BNS merger origin for the long-lived NS, we use XRF observations to estimate a lower limit on the rate of BNS mergers accompanied by a potentially observable XRF signal. Within the reach of the advanced LIGO and Virgo gravitational wave detectors, we find >0.02-0.05 1/yr. Finally, we discuss the implications of a supernova association for the XRF events considered.
description: 5 pages, 2 figures
Effect of Advertisement on Consumers' Attitude: The Case of Habesha Beer
Creators: name: Zewdie, Saron
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Advertising in both traditional media and the Internet is important for profitability of an organization. In light of this, the present study measures the effect of advertisement on customers' attitude toward Habesha beer. It also tries to get feedback on consumers' perception on advertisement and measure to what extent advertisement is important for the growth of beer factories. The following factors contribute to consumers' perceptions of advertisements: entertainment, source of information, credibility of source factor media used for advertisement, & consideration of norms. Quantitative research approach was followed and the research design was descriptive.Questionnaires were used to collect primary data by using a self-administered data collection system from 385 respondents, out of which 345 valid questionnaires were collected and analyzed. These respondents were selected by using a non-probability sampling technique, which is Judgment Sampling method.By understanding impact of advertisement on consumers' attitude, designers and marketers can better strategize their advertising designs. A better understanding of interactivity can also help to improve the effectiveness of interactive media. Recommendation is suggested on factors that contribute to advanced advertisement after analysis made from feedback of respondents
Bionettoyage des surfaces à l’hôpital : comparaison de l’efficacité antibactérienne de plusieurs techniques
Creators: name: Sooben, Tanisha
name: Boynuk, Boran
name: Crettenois, Thomas
name: Fersing, Tania
name: Burger, Sandrine
name: Meunier, Olivier
Publisher: name: Health & Co
Year: 2023
Subjects: Désinfection
Nettoyage
Développement durable

description: Nous comparons plusieurs procédures de bionettoyage des surfaces par des prélèvements bactériologiques sur le sol, dans les chambres et salles de bains de patients. Les prélèvements sont réalisés dès la sortie du patient puis après l’utilisation d’un produit détergent, d’un détergent-désinfectant, de l’eau associée aux microfibres ou du nettoyeur vapeur associé à l’exposition aux ultraviolets (UV) C ou à la désinfection des surfaces par voie aérienne (DSVA). Le détergent seul et l’utilisation de la microfibre permettent de diminuer d’un logarithme la charge bactérienne sur les surfaces. Les détergents-désinfectants, comme les nettoyeurs vapeur, ne font pas mieux. Les couples « nettoyage-DSVA » ou « nettoyage-UV-C » obtiennent un abattement de la charge bactérienne sur les surfaces de respectivement 2,25 et 2,01 logs dans nos essais, soit un résultat 10 fois plus efficace que la chimie seule et en exposant l’ensemble des surfaces utiles à l’hôpital, ce que ne permet pas le bionettoyage manuel. Les résultats nous permettent de proposer une procédure plus efficace avec un cycle de désinfection automatique performant et écoresponsable.
Isolate record for VAFB-ISO-351
Creators: name: Holloway, Corinne
Year: 1982
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Hammerstone
valueUri: https://core.tdar.org/browse/material-type/94/hammerstone
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-351. The artifact is a hammerstone with one battered edge (pinkish-tan quartzite).
Angular dynamics of small crystals in viscous flow
Creators: name: Fries, J.
name: Einarsson, J.
name: Mehlig, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The angular dynamics of a very small ellipsoidal particle in a viscous flow decouples from its translational dynamics, and the particle angular velocity is given by Jeffery's theory. It is known that cuboid particles share these properties. In the literature a special case is most frequently discussed, namely that of axisymmetric particles with a continuous rotation symmetry. Here we compute the angular dynamics of crystals that possess a discrete rotation symmetry and certain mirror symmetries, but that do not have a continuous rotation symmetry. We give examples of such particles that nevertheless obey Jeffery's theory. But there are other examples where the angular dynamics is determined by a more general equation of motion.
description: 8 pages, 6 figures, revised version
Isolate record for VAFB-ISO-313
Creators: name: Holloway, Corinne
Year: 1990
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Chert
valueUri: https://core.tdar.org/browse/material-type/213/chert
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-313. The artifacts are a 3 cm long fragment of a light brown (slightly blueish tan) banded Monterey chert knife/projectile point and a secondary chert flake.
Mobilization of Domestic Financial Resource through Commercial Banks for Economic Development of Ethiopia
Creators: name: Gamo, Teferi
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Commercial banks are the main players in the financial system of Ethiopia performing financial intermediation. They control greater portion of the investment funds from domestic deposits and are the main creditors of the corporate bodies, micro finance institutions and individuals in various sector of the economy. The purpose of this study therefore was to identify the most effective and efficient ways commercial banks in Ethiopia employ to maximize the volume of domestic deposits. Thus, the study aims to evaluate the design of bank products and services, assess their effectiveness of harnessing domestic deposits and challenges they face in mobilizing deposits. This research has used relevant books, journals, annual reports, websites, and other publications to frame questions. Data from commercial banks on deposits they received from 2005 to 2014 and from in-depth- interview were used to analyze and the come to conclusion. Results from the analysis indicated that deposits mobilization of Commercial Banks in Ethiopia shows an upward trend but the rate of annual increment is at a decreasing rate. Total deposit is dominated by the public bank (CBE) .The bank also dominates the industry in financing the economy through loan. However, the competition among commercial banks is very critical to enhance efficiency in the overall contribution of the banking sector to the economy. The study also reveals significant contribution of branch network in the domestic resource mobilization of commercial banks in Ethiopia. The study's recommendations is that private commercial banks should be aggressive and more competitive in terms their financial mobilizing through increasing branch network and availing different product to bank users
Isolate record for VAFB-ISO-348
Creators: name: Holloway, Corinne
Year: 1982
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Chert
valueUri: https://core.tdar.org/browse/material-type/213/chert
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-348. The artifact is a large flake of a banded gray-tan-cream Monterey chert.