cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spatial navigation under threat: aversive apprehensions improve route retracing in higher versus lower trait anxious individuals
Creators: name: Bublatzky, Florian
name: Allen, Peter
name: Riemer, Martin
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie
subject: spatial navigation
subject: route retracing
subject: social learning
subject: threat-of-shock
subject: trait anxiety

description: Spatial navigation is a basic function for survival, and the ability to retrace a route has direct relevance for avoiding dangerous places. This study investigates the effects of aversive apprehensions on spatial navigation in a virtual urban environment. Healthy participants with varying degrees of trait anxiety performed a route-repetition and a route-retracing task under threatening and safe context conditions. Results reveal an interaction between the effect of threatening/safe environments and trait anxiety: while threat impairs route-retracing in lower-anxious individuals, this navigational skill is boosted in higher-anxious individuals. According to attentional control theory, this finding can be explained by an attentional shift toward information relevant for intuitive coping strategies (i.e., running away), which should be more pronounced in higher-anxious individuals. On a broader scale, our results demonstrate an often-neglected advantage of trait anxiety, namely that it promotes the processing of environmental information relevant for coping strategies and thus prepares the organism for adequate flight responses.
Establishing Umbilical Cord Blood Hematological Parameters Reference Interval for Newborns in St. Peter Specialized Hospital Addis Ababa, Ethiopia from January 1 to March 31, 2019
Creators: name: Angelo, Ammanuel
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Background: Several factors like altitude, age, sex, pregnancy, socioeconomic status, life style and race influence hematological reference interval (RIs), which are critical to support appropriate clinical decisions and to interpret laboratory data in research. Currently there are no wellestablished RIs for cord blood hematological parameters of newborns in Ethiopia. Objective: To generate reference interval for umbilical cord blood hematological parameters of newborns at St Peter Specialized Hospital Addis Ababa, Ethiopia. Method: A cross-sectional study was conducted from January 1 to March 31, 2019 on healthy, term newborns (37-42 weeks) with normal birth weight born to apparently healthy pregnant mothers who had met the eligibility criteria. From a total of 139 newborns, 2-3ml cord blood was immediately collected from the clumped cord using EDTA tube. The samples were analyzed using Sysmex KX 21 hematology analyzer. Data was entered and the 2.5 th and 97.5 th percentile (upper and lower reference limit) were determined using non parametric method by SPSS version 23. The non-parametric independent Mann-Whitney U test (Wilcoxon rank-sum test) was used to compare the distribution of the parameters between genders, modes of deliveries and gestational age groups. Result: The combined reference interval for umbilical cord blood hematological parameters of newborns with the median and 95% reference values were as follows for WBC= 12.4 [6.55-19.35], RBC= 4.51 [3.55-5.52], HGB= 15.80 [12.41-19.65], HCT= 45.9[37.9-56.3], MCV=102.10[83.90111.55], MCH= 35.30 [29.35-39.10], MCHC= 34.3 [32.3-37.40], PLT= 236 [146-438], LYM= 37.5% [16.6-63.0%], MXD= 7.9%[1.65-15.75%], NEU= 53.7%[30.3-78.3], RDW= 15.6[12.019.0], PDW=11.0[9.1-15.7] and MPV= 9.4[8.1-11.8]. The current study found no significance difference between genders, except RDW (P=0.01) and gestational age group, but there was significance difference for WBC (p=0.007), RBC (p=0.018) and Absolute NEU (p=0.001). Conclusion: The values obtained from our study provide reference intervals for some hematological parameters in healthy newborns of Addis Ababa and its surrounding special weredas. However, the results need to be confirmed by larger samples from different centers throughout the country.
Influence of Profile Geometry on Frictional Energy Dissipation in a Dry, Compliant Steel-on-Steel Fretting Contact: Macroscopic Modeling and Experiment
Creators: name: Willert, Emanuel
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::600 Technik::600 Technik, Technologie
subject: elastic contact
subject: friction
subject: fretting
subject: fretting regime
subject: hysteresis
subject: profile geometry

description: Dry, frictional steel-on-steel contacts under small-scale oscillations are considered experimentally and theoretically. As indenting bodies, spheres, and truncated spheres are used to retrace the transition from smooth to sharp contact profile geometries. The experimental apparatus is built as a compliant setup, with the characteristic macroscopic values of stiffness being comparable to or smaller than the contact stiffness of the fretting contact. A hybrid macroscopic–contact model is formulated to predict the time development of the macroscopic contact quantities (forces and global relative surface displacements), which are measured in the experiments. The model is well able to predict the macroscopic behavior and, accordingly, the frictional hysteretic losses observed in the experiment. The change of the indenter profile from spherical to truncated spherical “pushes” the fretting contact towards the sliding regime if the nominal normal force and tangential displacement oscillation amplitude are kept constant. The transition of the hysteretic behavior, depending on the profile geometry from the perfectly spherical to the sharp flat-punch profile, occurs for the truncated spherical indenter within a small margin of the radius of its flat face. Already for a flat face radius which is roughly equal to the contact radius for the spherical case, the macroscopic hysteretic behavior cannot be distinguished from a flat punch contact with the same radius. The compliance of the apparatus (i.e., the macrosystem) can have a large influence on the energy dissipation and the fretting regime. Below a critical value for the stiffness, the fretting contact exhibits a sharp transition to the “sticking” regime. However, if the apparatus stiffness is large enough, the hysteretic behavior can be controlled by changing the profile geometry.
Physiological aspects of the life history of Antechinus stuartii (Macleay) : stress and ageing.
Creators: name: Barnett, John L.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
A test for stationarity based on empirical processes
Creators: name: Dette, Holger
name: Preuß, Philip
name: Vetter, Mathias
Publisher: name: Technische Universität Dortmund
Year: 2011
Subjects: subject: spectral density
subject: bootstrap
subject: locally stationary process
subject: integrated periodogram
subject: empirical spectral measure
subject: goodness-of-fit tests
subject: non-stationary processes
subject: 310
subject: 330
subject: 620

description: In this paper we investigate the problem of testing the assumption of stationarity in locally stationary processes. The test is based on an estimate of a Kolmogorov-Smirnov-type distance between the true time-varying spectral density and its best approximation through a stationary spectral density. Convergence of a time-varying empirical spectral process indexed by a class of certain functions is proved and furthermore the consistency of a bootstrap procedure is shown, which is used to approximate the limiting distribution of the test statistic. Compared to other methods proposed in the literature for the problem of testing for stationarity the new approach has at least two advantages. On the one hand the test can detect local alternatives converging to the null hypothesis at a rate 1/sqrt(T) (where T denotes the sample size). On the other hand the method only requires the specification of one regularization parameter. The finite sample properties of the method are investigated by means of a simulation study and a comparison with two other tests is provided which have been proposed in the literature for testing stationarity.
description: Discussion Paper / SFB 823;36/2011
Dynamic off-equilibrium transition in systems slowly driven across thermal first-order phase transitions
Creators: name: Pelissetto, Andrea
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the off-equilibrium behavior of systems with short-range interactions driven across a thermal first-order transition, where the dynamics is exponentially slow. We consider a dynamics that starts in the high-T phase at time t = t_i<0 and ends in in the low-T phase at t=t_f>0, with a time-dependent temperature T(t)/T_c \approx 1 - t/t_s, where t_s is the protocol time scale. A general off-equilibrium scaling (OS) behavior emerges in the limit of large t_s. We check it at the first-order transition of the two-dimensional q-state Potts model with q=10 and 20. The numerical results show evidence of a dynamic transition, where the OS functions show a spinodal-like singularity. Therefore, the general mean-field picture valid for systems with long-range interactions is qualitatively recovered, provided the time dependence is appropriately (logarithmically) rescaled.
description: 6 pages
A Simple Semi-Analytical Method for Solving Axisymmetric Contact Problems Involving Bonded and Unbonded Layers of Arbitrary Thickness
Creators: name: Forsbach, Fabian
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::600 Technik::600 Technik, Technologie
subject: axial symmetry
subject: elastic layers
subject: method of dimensionality reduction
subject: cartilage layer
subject: viscoelastic layer
subject: adhesion

description: In the present work, a recently extended version of the method of dimensionality reduction (MDR) for layered elastic media is applied for the first time using a semi-analytical approach. It is based on a priori knowledge of the cylindrical flat punch solution which is determined numerically using the boundary element method (BEM). We consider arbitrary indenters of revolution producing a circular area of contact with bonded and unbonded layers of arbitrary thickness. The proposed method reduces the contact solution to the numerically efficient evaluation of simple one-dimensional integrals. We further show that the solution of JKR-adhesive contacts with layers and contacts with linear-viscoelastic layers is straightforward using the well-known MDR formalisms. A specific focus has been devoted to study the thickness effect in different application examples. Comparisons with the literature and finite element simulations show very good agreement with the proposed method.
An Assessment on the Challenges and Achievements of BPR Implementation in the Oromia Civil Service and Good Governance Bureau
Creators: name: Bekeli, Hassen
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2012

description: World political economies are experiencing dynamic transformations that require substantial adjustments in the way and manner public organizations operate. Thus, BPR has been emerged and offered to help mediate this transition among other managing techniques for it is found to be the more prominent systems of mapping and adapting to the realities of this new and complex order of the world. Moreover, as a philosophy and a strategy geared towards enhancing government working system, BPR implementation and practice have now been either considered or adopted in the agenda of renewal of public sector organizations among developed and developing countries, both at the local and national levels. Accordingly, the Oromia Civil Service and Good Governance Bureau has viewed BPR as part of a shopping list of aspirant paradigms that prescribe the ways and approaches to reverse the tide of incompetence, inefficiency, redundancy, rigidity and problematic ways of service delivery of the Oromia region bureaucracy (civil service) including itself. As result, this study is done with the main objective of assessing the major achievements gained and challenges encountered while implementing BPR. To do so, this study employed qualitative research approach particularly descriptive survey in order to get better and deep information. Besides, both primary and secondary data sources were used to examine the issue under discussion. To this end, questionnaire survey was administered by performers. In addition, to better triangulate the study findings interview with key official informants was held as well as personal observation was undertaken. Accordingly, the study result shows that despite few encouraging achievements were registered, multifaceted challenges has been encountered. For instance among major challenges, lack of top management focus and involvement, lack of continuous monitoring and evaluation, lack coordination and communication, absence of incentives etc are worth mentioning among many other challenges identified. Finally, the study concluded by providing possible recommendations such as top management should be committed and be responsible for their action, provision of visible support to performers, proper incentives etc that may help to address those challenges and keep on maintaining the achievements registered so far. Key words : Public Sector, Business Process Reengineering, Implementation, Challenges
Understanding DNS Query Composition at B-Root
Creators: name: Ginesin, Jacob
name: Mirkovic, Jelena
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.2

description: The Domain Name System (DNS) is part of critical internet infrastructure, as DNS is invoked whenever a remote server is accessed (an URL is visited, an API request is made, etc.) by any application. DNS queries are served in hierarchical manner, with most queries served locally from cached data, and a small fraction propagating to the top of the hierarchy - DNS root name servers. Our research aims to provide a comprehensive, longitudinal characterization of DNS queries received at B-Root over ten years. We sampled and analyzed a 28-billion-query large dataset from the ten annual Day in the Life of the Internet (DITL) experiments from 2013 through 2022. We sought to identify and quantify unexpected DNS queries, establish longitudinal trends, and compare our findings with published results of others. We found that unexpected query traffic increased from 39.57% in 2013 to 67.91% in 2022, with 36.55% of queries being priming queries. We also observed growth and decline of Chromium-initiated, random DNS queries. Finally, we analyzed the largest DNS query senders and established that most of their traffic consists of unexpected queries.
description: 20 pages with 18 figures and 1 table. Published and presented at the 2022 IEEE/ACM International Conference on Big Data Computing, Applications and Technologies (BDCAT)
Transmission electron microscope study of growth and deformation defects in mica
Creators: name: Bell, Ian Alan
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
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 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Latent Variable Spaces For The Construction Of Topology Preserving Mappings
Creators: name: Peña, Marian
Publisher: name: figshare
Year: 2023
Subjects: Neural networks

description: This PhD is dedicated to a family of topology preserving mappings similar to the Generative Topographic Map (GTM) [8]. These techniques can be considered as a non-linear projection from input or data space to the output or latent space (usu- ally 2D or 3D), plus a clustering algorithm, that updates the prototypes. The key di®erence of the new models explained in this document is that, instead of includ- ing a neighborhood function in the learning rule in order to maintain the topology, we project points from an existing latent space to the data space. In doing so, we separate the clustering (inner loop) from the projection (outer loop) in two di®erent steps. A common frame based on the GTM structure can be used with di®erent clustering techniques, giving new properties to the algorithms. Thus we have two versions of the Harmonic Topographic Mapping (HaToM) that utilise the K-Harmonic Means (KHM) [91, 92, 95] clustering, and the faster Topographic Neural Gas (ToNeGas), with the inclusion of Neural Gas in the inner loop. We compare these with a fruitless attempt to combine the SOM learning algorithm with K-Harmonic Means. We ¯rst revise in Chapter three the topographic product of experts (ToPoE) [30], which includes the GTM structure, but with the Product of Experts instead of the Mixture of Experts and gradient descent learning instead of the Expectation- Maximisation algorithm used in the GTM. ToPoE like the GTM is more suitable for continuous data. We extend its theory by investigating properties such as the local variance of the model, the projection to latent space and convergence properties. We introduce local kernels instead of the better known Gaussian kernel. We also study the use of the magni¯cation factors as a tool for measuring topology preservation. In the fourth chapter we introduce theory underlying the new algorithm, HaToM, with its two versions, analyse their parameters, and compare the main di®erences. The experimental sections are dedicated to the experiments with several datasets, which illustrate the projection capabilities of these algorithms, explaining in detail the use of di®erent parameters, di®erent kernels, and how they a®ect the results. Chapter 5 introduces the last of the new algorithms, ToNeGas, compare it with the previous two by analysing di®erences using experiments with the same data. We also compare their topology preservation properties and the convergence speed, comparing as well with the results from the Self-Organizing Map. Finally, the three new algorithms are evaluated together and compared with each other, and also against SOM and GTM.
Adaptive FEM für Mehrkörperkontaktprobleme
Creators: name: Kleemann, Heiko
Publisher: name: Technische Universität Dortmund
Year: 2011
Subjects: subject: Adaptive finite Elemente
subject: A posteriori
subject: A priori
subject: Dual gewichtet
subject: DWR
subject: Fehlerschätzer
subject: FEM
subject: Kontakt
subject: Sattelpunkt
subject: Strukturmechanik
subject: Variationsungleichung
subject: 510

description: In dieser Arbeit werden Methoden zur FEM-Simulation von Kontkatproblemen zwischen elastischen Körpern beschrieben. Ausgehend von der zugrundeliegenden Problemstellung werden geeignete Lösungsansätze entwickelt und Diskretisierungsräume vorgestellt, die auf einer gemischten Formulierung beruhen. Die geometrischen Kontaktbedingungen und die Reibungsbedingungen werden so durch Lagrange Multiplikatoren beschrieben. Es werden zunächst Stabilitäts- und Konvergenzuntersuchungen für statische Probleme vorgenommen, um die vorgestellten Diskretisierungen zu überprüfen. Anschliessend werden diese Ansätze auf dynamische Probleme übertragen. Ein besonderer Augenmerk liegt in der Implementierbarkeit der Verfahren auch für 3d Anwendungen mit komplexen Kontaktbedingungen. Hier bietet die verwendete gemischte Formulierung einen brauchbaren Ansatz zur Realisierung der Kontaktbedingungen. Im 2. Teil der Arbeit liegt der Fokus auf adaptiven finite Elemente Methoden. Es werden a posteriori Fehlerschätzer für Kontaktprobleme entwickelt. Dies geschieht einerseits durch Modifikation von residualen Fehlerschätzern, anderseits wird die dual gewichtete Methode (DWR) verwendet, um Fehlerschätzer für lokale, beliebig definierbare Zielgrößen zu erhalten.
Bacterial Uropathogens and their Drug Resistance Pattern in Diabetic Patients Attending Yekatit 12 Hospital Medical College, Addis Ababa, Ethiopia
Creators: name: Lega, Tebarek
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: Background: Urinary tract infection (UTI) is one of the most common infections encountered and treated worldwide. UTI has been reported to be around four times higher in diabetics compared to non-diabetic patients. Since diabetic patients are at a high risk of development of UTIs, it is recommended that special attention is paid to them, especially for the management of bacterial UTIs. Objective: The aim of this study was to determine prevalence of significant bacteriuria and assess drug susceptibility pattern of the bacterial isolates in diabetic patients. Materials and Methods: A cross sectional study was conducted in Yekatit 12 Hospital Medical College from April to July 2015. . In this study, 246 patients diagnosed with diabetes mellitus were recruited consecutively. A standard questionnaire was used to collect information regarding the socio-demographic status and clinical history of the study participants. Mid-stream urine was used for chemical analysis, microscopy and microbiological isolation and identification of bacteria. Standardized disc diffusion method was used for the determination of antibiotic sensitivity testing. Data were entered into and analyzed by SPSS version 20. Results: Among the 246 study participants, 150 (60%) of them were females and 96 (40%) were males. The mean age of the study population was 51.5 years. Pyuria was detected in 27 (11%) of the urine specimens examined microscopically. Of the 246 urine specimens cultured on CLED and blood agar plate, 17(6.9%) of them showed significant bacteriuria. Among the 17 bacterial isolates, E. coli was the most frequently isolated one, accounting 10 (53%), followed by Klebsiella species 4 (21%). All the isolates showed 100% sensitivity to nitrofurantoin, except Proteus species, which exhibited resistance to the antibiotic. The multidrug resistant rate of the isolates in our study was 31.6% Conclusion and Recommendation: The overall prevalence of significant bacteriuria in our study was 6.9%. Even though Proteus species showed resistance to nitrofurantoin, all the remaining isolates were 100% sensitive to the antimicrobial. Use of antibiotics for treating UTI in DM patients should be supported with periodic culture and drug susceptibility test studies in a given geographical location.
Microscopic origin of entropy-driven polymorphism in hybrid organic-inorganic perovskite materials
Creators: name: Butler, Keith T.
name: Kieslich, Gregor
name: Svane, Katrine
name: Cheetham, Anthony K.
name: Walsh, Aron
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Entropy is a critical, but often overlooked, factor in determining the relative stabilities of crystal phases. The importance of entropy is most pronounced in softer materials, where small changes in free energy can drive phase transitions, which has recently been demonstrated in the case of organic-inorganic hybrid-formate perovskites. In this study we demonstrate the interplay between composition and crystal-structure that is responsible for the particularly pronounced role of entropy in determining polymorphism in hybrid organic-inorganic materials. Using ab initio based lattice dynamics we probe the origins and effects of vibrational entropy of four archetype perovskite (ABX$_3$) structures. We consider a fully inorganic material (SrTiO$_3$), an A-site hybrid halide material (CH$_3$NH$_3$PbI$_3$), an X-site hybrid material (KSr(BH$_4$)$_3$) and a mixed A- and X-site hybrid-formate material (N$_2$H$_5$Zn(HCO$_2$)$_3$), comparing the differences in entropy between two common polymorphs. The results demonstrate the importance of low-frequency inter-molecular modes in determining phase stability in these materials. The understanding gained allows us to propose a general principle for the relative stability of different polymorphs of hybrid materials as temperature is increased.
Ecology and general biology of five sympatric species of Myrmecia (Hymeroptera : Formicidae)
Creators: name: Barnett, J. M.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Xenotime reveals Caledonian hydrothermal overprint on Neoproterozoic Cu mineralization, East Greenland
Creators: name: Olierook, Hugo K. H.
name: Crook, Kelsey
name: Sinclair, Penelope
name: Fougerouse, Denis
name: Joseph, Cilva
name: Kirkland, Christopher L.
name: Kennedy, Allen
name: Gao, Hao
name: Evans, Noreen J.
name: McDonald, Bradley J.
name: Quintero, Raiza R.
name: Kumara, Anusha Shantha
name: Cameron, Graeme
name: Walsh, Ben
name: Ritchie, Meghan
name: Roberts, Malcolm P.
name: McInnes, Brent I. A.
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary Figure B: Compilation of zircon transmitted, reflected and CL images for new metasedimentary rock and granodiorite samples.
Effect of system level structure and spectral distribution of the environment on the decoherence rate
Creators: name: Suter, Dieter
name: Zhang, Jingfu
name: Peng, Xinhua
name: Rajendran, Nageswaran
Publisher: name: The American Physical Society
Year: 2007
Subjects: subject: 530

description: Minimizing the effect of decoherence on a quantum register must be a central part of any strategy to realize scalable quantum-information processing. Apart from the strength of the coupling to the environment, the decoherence rate is determined by the system level structure and by the spectral composition of the noise trace that the environment generates. Here, we discuss a relatively simple model that allows us to study these different effects quantitatively in detail. We evaluate the effect that the perturbation has on a nuclear magnetic resonance system while it performs a Grover search algorithm.
title: Konzeptionierung des Publikationsservice der WWU Münster
Creators: name: Fellermann, Wibke
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2022
Subjects: subject: 025 Operations of libraries, archives, information centers

description: Seit 2002 betreibt die Universitäts- und Landesbibliothek Münster (ULB Münster) den Dokumentenserver "miami", auf dem die unterschiedlichsten Dokumente von Angehörigen der WWU Münster publiziert werden. Derzeit wird ein Repositorium für Forschungsdaten geplant. Für den Zertifikatskurs "Forschungsdatenmanagement" (2021-2022) des ZBIW Köln wurde ein Konzept für den zukünftigen Publikationsservice für WWU-Angehörige erstellt. Folgende Fragen wurden hierfür näher beleuchtet: Soll das Publizieren von Forschungsdaten als eigenständiger Service angeboten werden? Wie handhaben andere Universitäten das Veröffentlichen von z. B. Artikeln und Forschungsdaten? Welches Serviceangebot ist aus Sicht des Forschenden und des Bibliothekpersonals am zielführendsten und benutzerfreundlichsten?
description: Since 2002, Munster University and State Library (ULB Munster) has been operating the document server "miami", on which a wide variety of documents from WWU members are published. Currently, a repository for research data is being planned. For the certificate course "Research Data Management" (2021-2022) of the ZBIW Cologne, a concept for the future publication service for WWU members was created. The following questions were examined in more detail for this purpose: Should the publishing of research data be offered as an independent service? How do other universities handle the publishing of, e.g. articles and research data? Which service is the most effective and user-friendly from the point of view of researchers and library staff?
Abelian theorems for stochastic volatility models with application to the estimation of jump activity of volatility
Creators: name: Belomestny, Denis
name: Panov, Vladimir
Publisher: name: Technische Universität Dortmund
Year: 2011
Subjects: subject: Abelian theorem
subject: affine stochastic volatility model
subject: Blumenthal-Getoor index
subject: 310
subject: 330
subject: 620

description: In this paper, we prove a kind of Abelian theorem for a class of stochastic volatility models (X; V ); where both the state process X and the volatility process V may have jumps. Our results relate the asymptotic behavior of the characteristic function of X for some > 0 in a stationary regime to the Blumenthal-Getoor indexes of the Levy processes driving the jumps in X and V . The results obtained are used to construct consistent estimators for the above Blumenthal-Getoor indexes based on low-frequency observations of the state process X. We derive the convergence rates for the corresponding estimator and show that these rates can not be improved in general.
description: Discussion Paper / SFB 823;45/2011
Fundamental difference between superblockers and superspreaders in networks
Creators: name: Radicchi, Filippo
name: Castellano, Claudio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Two very important problems regarding spreading phenomena in complex topologies are the optimal selection of node sets either to minimize or maximize the extent of outbreaks. Both problems are nontrivial when a small fraction of the nodes in the network can be used to achieve the desired goal. The minimization problem is equivalent to a structural optimization. The "superblockers", i.e., the nodes that should be removed from the network to minimize the size of outbreaks, are those nodes that make connected components as small as possible. "Superspreaders" are instead the nodes such that, if chosen as initiators, they maximize the average size of outbreaks. The identity of superspreaders is expected to depend not just on the topology, but also on the specific dynamics considered. Recently, it has been conjectured that the two optimization problems might be equivalent, in the sense that superblockers act also as superspreaders. In spite of its potential groundbreaking importance, no empirical study has been performed to validate this conjecture. In this paper, we perform an extensive analysis over a large set of real-world networks to test the similarity between sets of superblockers and of superspreaders. We show that the two optimization problems are not equivalent: superblockers do not act as optimal spreaders.
description: 6 pages, 4 figures + Supplemental Material. Final published version
Studies of dynamical system : the analytical and numerical analysis of a system of ordinary differential equations, proposed as a model of the electrical behaviour across a nerve membrane
Creators: name: Barnes, Belinda
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
A test of local Lorentz invariance with Compton scattering asymmetry
Creators: name: Mohanmurthy, P.
name: Narayan, A.
name: Dutta, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on a measurement of the constancy and anisotropy of the speed of light relative to the electrons in photon-electron scattering. We used the Compton scattering asymmetry measured by the new Compton polarimeter in Hall~C at Jefferson Lab to test for deviations from unity of the vacuum refractive index ($n$). For photon energies in the range of 9 - 46 MeV, we obtain a new limit of $1-n < 1.4 \times 10^{-8}$. In addition, the absence of sidereal variation over the six month period of the measurement constrains any anisotropies in the speed of light. These constitute the first study of Lorentz invariance using Compton asymmetry. Within the minimal standard model extension framework, our result yield limits on the photon and electron coefficients $\tildeκ_{0^+}^{YZ}, c_{TX}, \tildeκ_{0^+}^{ZX}$, and $c_{TY}$. Although, these limits are several orders of magnitude larger than the current best limits, they demonstrate the feasibility of using Compton asymmetry for tests of Lorentz invariance. Future parity violating electron scattering experiments at Jefferson Lab will use higher energy electrons enabling better constraints.
description: 7 pages, 5 figures
Iodination of some amino acids and their derivatives
Creators: name: Quilligan, John Damian
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Niños furbito y niñas lo que sea: The gender gap in science and the consequences for the scientific knowledge that is created
Creators: name: González-Salmón, Elvira
Publisher: name: Zenodo
Year: 2023

description: Presentation for the Doctoral Forum from International Society for Scientometrics and Informetrics 2023 (Indiana University in Bloomington) Project supported by FPU2021 Fellowship (Ministerio de Universidades) and COMPARE Project (PID2020-117007RA-100)
Dipole factorization for DIS at NLO I: Loop correction to the photon to quark-antiquark light-front wave-functions
Creators: name: Beuf, Guillaume
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The one-loop QCD corrections to the light-front wave-function for the quark-antiquark Fock state inside a transverse or longitudinal off-shell photon are explicitly calculated, both in full momentum space and in mixed space (a.k.a. dipole space). These results provide one of the main contributions to virtual NLO corrections to many DIS observables (inclusive or not) in the dipole factorization formalism at low Bjorken x. In a follow-up article, these one-loop corrections are combined with earlier results on the wave-function for the quark-antiquark-gluon Fock state, in order to get the full set of NLO corrections to the DIS structure functions $F_2$ and $F_L$ in the dipole factorization formalism, valid at low Bjorken x.
description: 47 pages, 3 figures; version 2 includes minor corrections
The practices of human resource development in enhancing employees satisfaction: the case of Ethiopian institute of agricultural research (EIAR)
Creators: name: Gashu, Mesfin
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Now days, organizations operate in a complex and changing environment that greatly influences their growth and expansion. To cope up with this changing environment they need to develop their human resources. This is because the survival and growth of any organization depends on the quality of human resources. Having this in mind this study was conducted to assess the practices of Human Resource Development (HRD) in enhancing employees' satisfaction in the Ethiopian Institute of Agricultural Research (EIAR) at its head quarter, in Addis Ababa. The study used both primary and secondary data sources. Cross sectional survey was employed taking a sample of 150 respondents selected through simple random sampling technique.The datahas been collected through questionnaire. Besides questionnaire, interviews were used to supplement and verify the information. Data were analyzed and interpreted using descriptive statistics using SPSS version 20.0 and qualitative technique. The main type human resource development practices issues like:the practices of training and development,Training and Development need assessment and its methods, objectives of Training &Development, implementation techniques of training and development, factors inhibiting Training Development and the various issues of HRD practiceslike the institute's commitment to HRD, appropriateness of HRD practices for promotion and enhancement of education of employees, opportunities for growth and development, management's guidance and encouragements and other dimensions of HRD practices.A survey questionnaire with five point Likert scale is a main tool for gathering primary data about employees' satisfaction with human resource development practices of the institute. The findings of the study indicated that respondents perceived the HRD practices of the institute as job description andquestionnaires were the major type of need assessment method, Training & development objectives were set in line with the organization goals, relatively focused on off the job Training &Development than on the job methods, Lack of adequate training & development to the top management is the major factor that inhibit Training &Development, the institute is not committed in active programs to upgrade employees skills & knowledge, personal growth and development to enhancing employees satisfaction, HRD unfairly focused on some work units only. Respondents also indicated their dissatisfaction with the promotional opportunities,on thejob learning and coaching practices, competition and participation and the knowledge to gain from the work they do for the institute. Moreover, majority of respondents indicated that they don't think that the institute is the best place to develop themselves.
Similarities and uniqueness of Ly$α$ emitters among star-forming galaxies at z=2.5
Creators: name: Shimakawa, Rhythm
name: Kodama, Tadayuki
name: Shibuya, Takatoshi
name: Kashikawa, Nobunari
name: Tanaka, Ichi
name: Matsuda, Yuichi
name: Tadaki, Ken-ichi
name: Koyama, Yusei
name: Hayashi, Masao
name: Suzuki, Tomoko L.
name: Yamamoto, Moegi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We conducted a deep narrow-band imaging survey with the Subaru Prime Focus Camera on the Subaru Telescope and constructed a sample of Ly$α$ emitters (LAEs) at z=2.53 in the UDS-CANDELS field where a sample of H$α$ emitters (HAEs) at the same redshift is already obtained from our previous narrow-band observation at NIR. The deep narrow-band and multi broadband data allow us to find LAEs of stellar masses and star-formation rates (SFRs) down to $\gtrsim$$10^8$ M$_\odot$ and $\gtrsim$0.2 M$_\odot$/yr, respectively. We show that the LAEs are located along the same mass-SFR sequence traced by normal star-forming galaxies such as HAEs, but towards a significantly lower mass regime. Likewise, LAEs seem to share the same mass--size relation with typical star-forming galaxies, except for the massive LAEs, which tend to show significantly compact sizes. We identify a vigorous mass growth in the central part of LAEs: the stellar mass density in the central region of LAEs increases as their total galaxy mass grows. On the other hand, we see no Ly$α$ line in emission for most of the HAEs. Rather, we find that the Ly$α$ feature is either absent or in absorption (Ly$α$ absorbers; LAAs), and its absorption strength may increase with reddening of the UV continuum slope. We demonstrate that a deep Ly$α$ narrow-band imaging like this study is able to search for not only LAEs but also LAAs in a certain redshift slice. This work suggests that LAEs trace normal star-forming galaxies in the low-mass regime, while they remain as a unique population because the majority of HAEs are not LAEs.
description: 20 pages, 18 figures, 3 tables, accepted for publication in MNRAS
Studies on the physiology and ecology of some Australian calanoids (Crustacea: Copepoda)
Creators: name: Brand, Geoffrey Winston
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Niños furbito y niñas lo que sea: The gender gap in science and the consequences for the scientific knowledge that is created
Creators: name: González-Salmón, Elvira
Publisher: name: Zenodo
Year: 2023
Subjects: Gender gap, Science, Bibliometrics

description: Nada existe en un vacío, tampoco la ciencia. Los prejuicios de género, raciales, de clase, sexuales o religiosos también están presentes en la academia, por lo que llevar a cabo investigaciones sin una introspección crítica puede aumentar las desigualdades tanto dentro de la comunidad científica como fuera de ella, al afectar al tipo de conocimiento que se produce y luego se transfiere a la sociedad. Esta tesis se centra en el estudio de la brecha de género en la academia y las consecuencias que esto tiene para el conocimiento que se genera. Para ello, cuenta con tres objetivos específicos. En un primer lugar, se propone analizar diferencias de género a nivel temático y de países. Partiendo de este análisis, se elegirá un estudio de caso pertinente para analizar qué motivos personales – con énfasis en el género – llevan a los/as investigadores/as a seleccionar su tema de investigación. El último objetivo se centra en un nivel macro, al analizar el rol que la financiación y las agencias financiadoras juegan en la reproducción de las diferencias de género en la academia. La metodología usada se basará en elementos cualitativos y cuantitativos. Tanto el primer como el tercer objetivo se apoyan en técnicas de análisis de datos y aproximaciones estadísticas con datos provenientes de bases de datos científicas como Dimensions o Scopus. El segundo objetivo tiene un enfoque más cualitativo, y se llevarán a cabo entrevistas sistemáticas para entender los motivos que llevan a los/as investigadores/as a elegir determinado tema de investigación. La utilidad y el alcance de los conocimientos que se crean en el mundo académico dependen de la variedad de mentes y experiencias que se dejan entrar en el mundo de la investigación. Esta tesis pretende servir para comprender mejor la naturaleza de la diversidad en el mundo académico. Además, busca servir como apoyo para la toma de políticas científicas que eviten una perpetuación de sesgo de género en la academia. Projecto financiado por FPU2021 Fellowship (Ministerio de Universidades) y COMPARE Project (PID2020-117007RA-100).
Discrete hierarchy of sizes and performances in the exchange-traded fund universe
Creators: name: Vandermarliere, Benjamin
name: Ryckebusch, Jan
name: Schoors, Koen
name: Cauwels, Peter
name: Sornette, Didier
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Finance (q-fin.GN)
subject: Portfolio Management (q-fin.PM)
subject: FOS: Economics and business

description: Using detailed statistical analyses of the size distribution of a universe of equity exchange-traded funds (ETFs), we discover a discrete hierarchy of sizes, which imprints a log-periodic structure on the probability distribution of ETF sizes that dominates the details of the asymptotic tail. This allows us to propose a classification of the studied universe of ETFs into seven size layers approximately organized according to a multiplicative ratio of 3.5 in their total market capitalization. Introducing a similarity metric generalising the Herfindhal index, we find that the largest ETFs exhibit a significantly stronger intra-layer and inter-layer similarity compared with the smaller ETFs. Comparing the performance across the seven discerned ETF size layers, we find an inverse size effect, namely large ETFs perform significantly better than the small ones both in 2014 and 2015.
Spatiotemporal Symmetry in Rings of Coupled Biological Oscillators of Physarum Plasmodial Slime Mold
Creators: name: Fujii, Teruo
name: Nakagaki, Toshiyuki
name: Takamatsu, Atsuko
name: Tanaka, Reiko
name: Yamada, Hiroyasu
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Multiplicity fluctuation and correlation of identified baryons in quark combination model
Creators: name: Song, Jun
name: Li, Hai-hong
name: Wang, Rui-qin
name: Shao, Feng-lan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The dynamical fluctuation and correlation of multiplicity distributions of identified baryons and antibaryons produced by the hadronization of the bulk quark system are systematically studied in quark combination model. Starting from the most basic dynamics of quark combination which are necessary for multiplicity study, we analyze moments (variance, skewness and kurtosis) of inclusive multiplicity distribution of identified baryons, two-baryon multiplicity correlations, and baryon-antibaryon multiplicity correlations after the hadronization of quark system with given quark number and antiquark number. We obtain a series of interesting findings, e.g., binomial behavior of multiplicity moments, coincide flavor dependent two-baryon correlation and universal baryon-antibaryon correlation, which can be regarded as general features of quark combination. We further take into account correlations and fluctuations of quark numbers before hadronization to study their influence on multiple production of baryons and antibaryons. We find that quark number fluctuation and flavor conservation lead to a series of important results such as the negative $p\barΩ^{+}$ multiplicity correlation and universal two-baryon correlations. We also study the influence of resonance decay in order to compare our results with future experimental data in ultra-relativistic heavy ion collisions at LHC.
description: 19 pages, 12 figures