cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multistep greedy algorithm identifies community structure in real-world and computer-generated networks
Creators: name: Schuetz, Philipp
name: Caflisch, Amedeo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: Molecular Networks (q-bio.MN)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We have recently introduced a multistep extension of the greedy algorithm for modularity optimization. The extension is based on the idea that merging l pairs of communities (l>1) at each iteration prevents premature condensation into few large communities. Here, an empirical formula is presented for the choice of the step width l that generates partitions with (close to) optimal modularity for 17 real-world and 1100 computer-generated networks. Furthermore, an in-depth analysis of the communities of two real-world networks (the metabolic network of the bacterium E. coli and the graph of coappearing words in the titles of papers coauthored by Martin Karplus) provides evidence that the partition obtained by the multistep greedy algorithm is superior to the one generated by the original greedy algorithm not only with respect to modularity but also according to objective criteria. In other words, the multistep extension of the greedy algorithm reduces the danger of getting trapped in local optima of modularity and generates more reasonable partitions.
description: 17 pages, 2 figures
title: Absturz auf dem Bau – das Restrisiko könnte geringer sein
Creators: name: Schüler, Torsten
Publisher: name: Bauhaus-Universität Weimar
Year: 2001
Subjects: subject: Arbeitsschutz
subject: Baustelle
subject: Absturzunfall
subject: 620

description: Statistische Analyse der Ursachen, Häufigkeit und Schwere von Absturzunfällen bei Bauarbeiten, Hinweis auf Präventionsmaßnahmen
description: 2. Fachtagung Sicherheit auf Baustellen: mit einem Spezialteil von Beiträgen zu Qualität und Sicherheit auf Baustellen und im Schweißbetrieb ; anlässlich des Ausscheidens von Herrn Prof. Dr.-Ing. habil. Karl-Dieter Röbenack aus dem aktiven Berufsleben, p. 53
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 3, 2001, p. 53
Isozyme patterns of a selected Pseudotsuga menziesii (mirb.) franco population
Creators: name: El-Kassaby, Yousry Aly
Publisher: name: University of British Columbia
Year: 2010

description: Open pollinated seed samples were collected from 42 Douglas-fir trees in September 1978. The individuality of cone lots and subsequent seed lots had been retained in these trees. The trees are located in the University of British Columbia Research Forest, Haney, B.C. and were studied previously for phenology, growth, and flower and cone production by Griffith (1968). Isozyme variations were studied (using the gel electrophoresis technique) for both the haploid megagametophyte and the diploid embryo tissues at 27 loci, coding for 18 different enzymes for each tree separately. The objectives of this study were: 1. to study the mode of inheritance for these loci; 2. to determine the linkage relationships among these loci; 3. to estimate the outcrossing rate (t) for this population; 4. to determine the most effective sample size for estimating allelic frequencies; 5. to study the amount and organization of isozyme variation in this population and compare the results with the variation for some quantitative traits, and 6. to study the association between isozyme genotypes and quantitative traits. The results from the inheritance analyses for the 14 heterozygous enzyme systems showed that these electrophoretic variants segregated in a co-dominant fashion with distinct simple Mendelian expression. The linkage study yielded two tightly linked pairs [(AAT-2:PGI-2) and(AAT-3: SOD)] with recombination frequencies of 1.5 and 22.4 percent respectively. In addition, seven loosely linked pairs were detected with recombination frequencies varying between 32.7 and 41.9 percent. It was not possible to study three-point linkage due to the lack of appropriate combinations. Conditional probabilities were used to estimate the outcrossing rate (t) in the population using four enzyme systems. The estimated outcrossing rate was 0.9 with a standard deviation of 0.11, giving an inbreeding rate of 10 percent. By the minimum sampling variance criterion it was estimated that sample sizes between 42 and 60 trees from the base population are optimal to obtain reliable estimates for the allelic frequencies. Striking agreement on the appointment of genetic variation was found between results obtained from the gene diversity analysis for the electrophoretic data and the analysis of variance for seven different quantitative traits. These two independent sets of information confirmed that the majority of the variation existed within and not between populations. Finally, the association between the mother trees' genotypes and the performance of their half-sib families showed that the mother trees appeared to exert minimal influence on those characteristics analysed. The pollen parent contribution to the genetic constitution of the progenies should be investigated and it is recommended that isozyme studies should be extended to full-sib progenies.
Stochastic Constitutive Model of Isotropic Thin Fiber Networks Based on Stochastic Volume Elements
Creators: name: Mansour, Rami
name: Kulachenko, Artem
name: Chen, Wei
name: Olsson, Mårten
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.1.8; G.1.9; I.4.0; I.4.1; I.4.3; I.4.7; I.4.9; I.6.0; I.6.3; I.6.4; I.6.5; I.6.6; I.6.8; J.2; J.6
subject: 74B05, 74B10, 74C05, 74E05, 74E25, 74E35, 74Q05, 74Q15, 74E10, 74D05, 74D10

description: Thin fiber networks are widely represented in nature and can be found in man-made materials such as paper and packaging. The strength of such materials is an intricate subject due to inherited randomness and size-dependencies. Direct fiber-level numerical simulations can provide insights into the role of the constitutive components of such networks, their morphology, and arrangements on the strength of the products made of them. However, direct mechanical simulation of randomly generated large and thin fiber networks is characterized by overwhelming computational costs. Herein, a stochastic constitutive model for predicting the random mechanical response of isotropic thin fiber networks of arbitrary size is presented. The model is based on stochastic volume elements (SVEs) with SVE size-specific deterministic and stochastic constitutive law parameters. The randomness in the network is described by the spatial fields of the uniaxial strain and strength to failure, formulated using multivariate kernel functions and approximate univariate probability density functions. The proposed stochastic continuum approach shows good agreement when compared to direct numerical simulation with respect to mechanical response. Furthermore, strain localization patterns matched the one observed in direct simulations, which suggests an accurate prediction of the failure location. This work demonstrates that the proposed stochastic constitutive model can be used to predict the response of random isotropic fiber networks of arbitrary size.
description: 28 pages, 19 figures
Beyond Parametrics in Interdisciplinary Research: Festschrift in Honor of Professor Pranab K. Sen
Creators: name: Balakrishnan, N.
name: Peña, Edsel A.
name: Silvapulle, Mervyn J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Pranab K. Sen has contributed extensively to many areas of Statistics including order statistics, nonparametrics, robust inference, sequential methods, asymptotics, biostatistics, clinical trials, bioenvironmental studies and bioinformatics. His long list of over 600 publications and 22 books and volumes along with numerous citations during the past 5 decades bear testimony to his work. All three of us have had the good fortune of being associated with him in different capacities. He has given professional and personal advice on many occasions to all of us, and we feel that our lives have certainly been enriched by our association with him. He has been over the years a friend, philosopher and a guide to us, and still continues to be one! While parametric statistical inference remains ever so popular, semi-parametric, Bayesian and nonparametric inferential methods have attracted great attention from numerous applied scientists because of their weaker assumptions, which make them naturally robust and so more appropriate in real-life applications. This clearly signals for ``beyond parametrics'' approaches which include nonparametrics, semi-parametrics, Bayes methods and many others. Motivated by this feature, and his drive in the ``beyond parametrics'' area, we thought that it will be only appropriate for a volume in honor of Pranab Kumar Sen to focus on this aspect of statistical inference and its applications. With this in mind, we have put together this volume in order to (i) review some of the recent developments in this direction, (ii) focus on some new methodologies and highlight their applications, and (iii) suggest some interesting open problems and possible new directions for further research.
description: Published in the IMS Collections (http://www.imstat.org/publications/imscollections.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Development of the Peruvian economy through wood product exports
Creators: name: Mucha, Elias Hermogenes
Publisher: name: University of British Columbia
Year: 2010

description: Expanding Peruvian wood product exports would enhance the forestry and forest industries contribution to national development and welfare. Such prospects are examined from an economic standpoint. The subject is divided into three major areas as: Potential of the forest resources and forest industries; Current and projected export markets; and Opportunities for forest industrial development. In the first area, underlying problems and potential are examined. Forests as percentage of total land, composition by species, product mix, forest industries, harvesting and marketing problems are described. Most significantly, the heterogeneous nature of the Peruvian tropical forests, the selective harvesting practices, forest industries idle capacity and high ocean freight rates are identified as negative forces to further development of the forestry sector. In the second area, the location and potential size of export markets, cost of delivering wood to these markets, opportunities and constraints imposed by export policies on increased wood product exports, and balancing of exports with projected domestic wood products requirements are examined.. Given the species composition and product mix of the Peruvian forest industries it is found that there are enormous international markets available for sawn wood and wood-based panels. The cost of delivering wood product to export markets is identified as providing a comparative advantage. Balancing of exports with projected domestic wood products requirements shows that there is a considerable surplus of industrial roundwood. Finally, in the third area, implications of increased wood export activity and impact of an expanded wood product export programme on the forest resources sector and on the Peruvian economy are evaluated. Impacts would be closer utilization of o currently unutilized or underutilized forest resources, expansion of the number of species in domestic and export markets, organization of a strong logging industry, modernization and/or relocation of old plants and consolidation of new plants, utilization of the current forest industry surplus capacity, growth of income and attraction of foreign exchange, creation of employment opportunities , development of rural areas, generation of public revenue and other economic and social benefits. It is concluded that, in spite of negative factors, Peruvian forest resources and forest industries have the potential to make a great contribution to the nation's economy through expanded wood products production and export. There are excellent opportunities for expanding wood product exports from Peru. There is a possibility for improving the comparative advantage by reducing freight rates. Peruvian forests can support an expanded wood product export programme, and this programme should have a vigorous impact on the forest and forestry sectors and on the Peruvian economy.
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Kingsford, Carl
name: Pisanti, Nadia
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2020
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization
subject: Mathematics of computing → Discrete mathematics
subject: Applied computing → Computational biology
subject: Mathematics of computing → Information theory
subject: Theory of computation → Design and analysis of algorithms

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 172, 20th International Workshop on Algorithms in Bioinformatics (WABI 2020), pages 0:i-0:x
title: Chromatarme Zemente gegen Berufskrankheiten bei Bauarbeitern
Creators: name: Otto, Jörg
Publisher: name: Bauhaus-Universität Weimar
Year: 2001
Subjects: subject: Arbeitsschutz
subject: Baustelle
subject: Gefahrstoff
subject: Chromekzem
subject: Zement
subject: 620

description: Schädiguing der Haut durch chromathaltige Zemente; Schutzkonzept; gemeinsames Vorgehen der Zementindustrie gegen die Maurerkrätze
description: 2. Fachtagung Sicherheit auf Baustellen: mit einem Spezialteil von Beiträgen zu Qualität und Sicherheit auf Baustellen und im Schweißbetrieb ; anlässlich des Ausscheidens von Herrn Prof. Dr.-Ing. habil. Karl-Dieter Röbenack aus dem aktiven Berufsleben, p. 49
description: Schriften der Professur Baubetrieb und Bauverfahren, vol. 3, 2001, p. 49
Auf der Suche nach dem Paradies? Einblicke in eine Studie zu „Amenity Migration“ in Cha-am und Hua Hin, Thailand.
Creators: name: Jöstl, Julia
name: Wieser, Birgit
Publisher: name: Austrian Journal of South-East Asian Studies
Year: 2011

description: -
description: Austrian Journal of South-East Asian Studies, Vol 4 No 1 (2011): Tourism
Finite temperature vortex dynamics in Bose Einstein condensates
Creators: name: Jackson, B.
name: Proukakis, N. P.
name: Barenghi, C. F.
name: Zaremba, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the decay of vortices in Bose-Einstein condensates at finite temperatures by means of the Zaremba Nikuni Griffin formalism, in which the condensate is modelled by a Gross Pitaevskiiequation, which is coupled to a Boltzmann kinetic equation for the thermal cloud. At finite temperature, an off-centred vortex in a harmonically trapped pancake shaped condensate decays by spiralling out towards the edge of the condensate. This decay, which depends heavily on temperature and atomic collisions, agrees with that predicted by the Hall Vinen phenomenological model of friction force, which is used to describe quantised vorticity in superfluid systems. Our result thus clarifies the microscopic origin of the friction and provides an ab initio determination of its value.
description: 16 pages, 10 figures, submitted
Gamow-Hartree-Fock-Bogoliubov Method: Representation of quasiparticles with Berggren sets of wave functions
Creators: name: Michel, N.
name: Matsuyanagi, K.
name: Stoitsov, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Single-particle resonant states, also called Gamow states, as well as bound and scattering states of complex energy form a complete set, the Berggren completeness relation. It is the building block of the recently introduced Gamow Shell Model, where weakly bound and resonant nuclear wave functions are expanded with a many-body basis of Slater Determinants generated by this set of single-particle states. However, Gamow states have never been studied in the context of Hartree-Fock-Bogoliubov theory, except in the Bardeen-Cooper-Schriefer (BCS) approximation, where both the upper and lower components of a quasiparticle wave function are assumed to possess the same radial dependence with that of a Gamow state associated with the Hartree-Fock potential. Hence, an extension of the notion of Gamow state has to be effected in the domain of quasiparticles. It is shown theoretically and numerically that bound, resonant and scattering quasiparticles are well defined and form a complete set, by which bound Hartree-Fock-Bogoliubov ground states can be constructed. It is also shown that the Gamow-Hartree-Fock single-particle basis can be used to solve the Gamow-Hartree-Fock-Bogoliubov problem. As an illustration, the proposed method is applied to neutron-rich Nickel isotopes close to the neutron drip-line.
description: Accepted version
MagNI: A Magnetoelectrically Powered and Controlled Wireless Neurostimulating Implant
Creators: name: Yu, Zhanghao
name: Chen, Joshua C.
name: Alrashdan, Fatima T.
name: Avants, Benjamin W.
name: He, Yan
name: Singer, Amanda
name: Robinson, Jacob T.
name: Yang, Kaiyuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Signal Processing (eess.SP)
subject: FOS: Biological sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents the first wireless and programmable neural stimulator leveraging magnetoelectric (ME) effects for power and data transfer. Thanks to low tissue absorption, low misalignment sensitivity and high power transfer efficiency, the ME effect enables safe delivery of high power levels (a few milliwatts) at low resonant frequencies (~250 kHz) to mm-sized implants deep inside the body (30-mm depth). The presented MagNI (Magnetoelectric Neural Implant) consists of a 1.5-mm$^2$ 180-nm CMOS chip, an in-house built 4x2 mm ME film, an energy storage capacitor, and on-board electrodes on a flexible polyimide substrate with a total volume of 8.2 mm$^3$ . The chip with a power consumption of 23.7 $μ$W includes robust system control and data recovery mechanisms under source amplitude variations (1-V variation tolerance). The system delivers fully-programmable bi-phasic current-controlled stimulation with patterns covering 0.05-to-1.5-mA amplitude, 64-to-512-$μ$s pulse width, and 0-to-200Hz repetition frequency for neurostimulation.
description: This work has been accepted to 2020 IEEE Transactions on Biomedical Circuits and Systems (TBioCAS)
Unambiguous comparison of unitary channels
Creators: name: Sedlak, Michal
name: Ziman, Mario
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We address the problem of unambiguous comparison of a pair of unknown qudit unitary channels. Using the framework of process positive operator valued measures (PPOVM) we characterize all solutions and identify the optimal ones. We prove that the entanglement is the key ingredient in designing the optimal experiment for comparison of unitary channels. Without entanglement the optimality can not be achieved. The proposed scheme is also experimentally feasible.
description: Version published in PRA, 7 pages, 1 figure
The Jungle as Border Zone: The Aesthetics of Nature in the Work of Apichatpong Weerasethakul
Creators: name: Boehler, Natalie
Publisher: name: Austrian Journal of South-East Asian Studies
Year: 2011

description: In Thai cinema, nature is often depicted as an opposition to the urban sphere, forming a contrast in ethical terms. This dualism is a recurring and central theme in Thai representations and an important carrier of Thainess (khwam pen Thai). The filmmaker Apichatpong Weerasethakul offers a new take on this theme. Significant parts of his work are set in the jungle, a realm radically diff erent from the agricultural sphere that the mainstay of Thai representations tends to focus on. In Apichatpong’s work, the wilderness becomes a liminal space, on multiple levels. This paper focuses on how this liminality translates into Apichatpong’s aesthetics of the jungle and on how this aesthetics and the films’ narrations negotiate Thai nationhood via the perception of the spectators.
description: Austrian Journal of South-East Asian Studies, Vol 4 No 2 (2011): Borderlands & Border Studies
Toward a multimodal multitask model for neurodegenerative diseases diagnosis and progression prediction
Creators: name: Lahrichi, Sofia
name: Rhanoui, Maryem
name: Mikram, Mounia
name: Asri, Bouchra El
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Recent studies on modelling the progression of Alzheimer's disease use a single modality for their predictions while ignoring the time dimension. However, the nature of patient data is heterogeneous and time dependent which requires models that value these factors in order to achieve a reliable diagnosis, as well as making it possible to track and detect changes in the progression of patients' condition at an early stage. This article overviews various categories of models used for Alzheimer's disease prediction with their respective learning methods, by establishing a comparative study of early prediction and detection Alzheimer's disease progression. Finally, a robust and precise detection model is proposed.
Laser materials processing in manufacturing of lithium-ion batteries
Creators: name: Smyrek, Peter
name: Pfleging, Wilhelm
Publisher: name: Institution of Engineering and Technology (IET)
Year: 2023
Subjects: laser processing
3D battery
upscaling
laser-induced breakdown spectroscopy

description: A significant increase in lithium-ion battery performances such as battery lifetime, high-rate capability and fast charging can be achieved by ultrafast laser structuring of composite electrodes. Therefore, laser materials processing and its upscaling in battery manufacturing is currently attracting huge attention as there is an increasing demand to further improve the electrochemical performance of next-generation batteries for use in electric vehicles. However, in addition to laser process upscaling issues, there is a strong need to be able to define suitable three-dimensional (3D) electrode designs regarding application scenarios, respective degradation processes, and safety aspects. Therefore, the development of next generation anodes and cathodes architectures needs to be flanked by analytics capable to generate a rapid evaluation of the entire composite electrodes. An appropriate post mortem analytical method should be able to visualize 3D lithium concentration and distribution providing a map of state-of-charge of entire electrodes. Such a technology recently introduced into battery analytics is laser-induced breakdown spectroscopy (LIBS) which is a type of atomic emission spectroscopy providing lateral resolved elemental compositions within a few milliseconds. By combining those chemical data with data from electrochemical analyses an evaluation of thick-film electrode architectures becomes possible. 2D and 3D lithium concentration profiles are presented for unstructured and laser-structured electrodes and corresponding electrode design criteria are derived from them.
Aesthetic judgments of forest trees in relationship to timber quality
Creators: name: Bekker, Pieter Jan
Publisher: name: University of British Columbia
Year: 2010

description: This study explores the relationship between timber quality and aesthetic quality of forest trees, in hope of uncovering criteria with which both timber management and forest aesthetics may be realized on the same land base. Findings may also apply to exclusive use recreation forests. Twenty-four mature trees, growing along a wilderness trail in British Columbia, were selected according to three timber quality classes and paired so that all possible combinations of the quality classes were evenly represented. Wilderness recreation users were asked to judge the attractiveness of the trees, select the one tree of each pair they preferred, and give reasons for their preference. Study results showed a positive relationship existed between timber quality and aesthetic quality. However, while the timber quality classification did aesthetically differentiate between good and poor timber quality trees, the classification could not, with any consistency, aesthetically differentiate between good and average timber quality trees, or similar timber quality trees. Tree height was also positively related with aesthetic quality, and could distinguish the preferred trees three of the four times that timber quality could not. It therefore was more accurate than timber quality in assessing the aesthetic quality of forest trees. Reasons for tree preference most often chosen were: more balanced, straighter trunk, fewer dead trunk branches and more attractive background scenery. Variety both within and between stands, and the retention of some tall trees may, where important to the good husbandry of provincial forest lands, contribute considerably toward increasing the compatibility of timber management and forest aesthetics.
Nonlinear reversed shear Alfven eigenmode saturation due to spontaneous zonal current generation
Creators: name: Wei, Shizhao
name: Wang, Tao
name: Chen, Ningfei
name: Qiu, Zhiyong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: General nonlinear equations describing reversed shear Alfven eigenmode (RSAE) self-modulation via zero frequency zonal structure (ZFZS) generation are derived using nonlinear gyrokinetic theory, which are then applied to study the spontaneous ZFZS excitation as well as RSAE nonlinear saturation. It is found that both electrostatic zonal flow (ZF) and electromagnetic zonal current (ZC) can be preferentially excited by finite amplitude RSAE, depending on specific plasma parameters. The modification to local shear Alfven wave continuum is evaluated using the derived saturation level of ZC, which is shown to play a comparable role in saturating RSAE with the ZFZS scattering.
Environmental Policy Coordination in ASEAN: The Case of Waste From Electrical and Electronic Equipment
Creators: name: Ibitz, Armin
Publisher: name: Austrian Journal of South-East Asian Studies
Year: 2012

description: Among numerous environmental challenges in the ASEAN region, the rapid growth of volumes of waste from electrical and electronic equipment (e-waste) has increasingly drawn international attention. Economies face huge demands for electrical and electronic products, while governments are confronted with diffi culties dealing with mounting volumes of e-waste. Furthermore, lucrative transnational shipment of discarded electric and electronic devices calls for a regional response to the issue. While ASEAN has failed to come up with a common policy response, certain member states have pushed ahead with their own legislation in an attempt to address this urgent issue. This study sets out to identify the determining factors which have disabled ASEAN in terms of agreeing on a common policy response in the case of dealing with e-waste. Based on the assumption that states act according to expected gains, the study applies a game theoretical approach to analyse the developments.
description: Austrian Journal of South-East Asian Studies, Vol 5 No 1 (2012): Health
The Effective Theory of the Light Stop Scenario
Creators: name: Carena, Marcela
name: Nardini, Germano
name: Quiros, Mariano
name: Wagner, Carlos E. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Electroweak baryogenesis in the minimal supersymmetric extension of the Standard Model may be realized within the light stop scenario, where the right-handed stop mass remains close to the top-quark mass to allow for a sufficiently strong first order electroweak phase transition. All other supersymmetric scalars are much heavier to comply with the present bounds on the Higgs mass and the electron and neutron electric dipole moments. Heavy third generation scalars render it necessary to resum large logarithm contributions to perform a trustable Higgs mass calculation. We have studied the one--loop RGE improved effective theory below the heavy scalar mass scale and obtained reliable values of the Higgs mass. Moreover, assuming a common mass $\tilde m$ for all heavy scalar particles, and values of all gaugino masses and the Higgsino mass parameter about the weak scale, and imposing gauge coupling unification, a two-loop calculation yields values of the mass $\tilde m$ in the interval between three TeV and six hundred TeV. Furthermore for a stop mass around the top quark mass, this translates into an upper bound on the Higgs mass of about 150 GeV. The Higgs mass bound becomes even stronger, of about 129 GeV, for the range of stop and gaugino masses consistent with electroweak baryogenesis. The collider phenomenology implications of this scenario are discussed in some detail.
description: 28 pages, 13 figures, uses axodraw.sty; v2: To appear in JHEP
optimizing the searches for interstellar heterocycles
Creators: name: Etim, Emmanuel E.
name: Adelagun, ROA
name: Andrew, Chrysanthus
name: Oluwole, Oladimeji Enock
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is a fact that interstellar formation processes are thermodynamically affected. Based on this, the seven heterocycles; imidazole, pyridine, pyrimidine, pyrrole, quinoline, isoquinoline and furan that have been searched for from different astronomical sources with only upper limits of their column density determined without any successful detection remain the best candidates for astronomical observation with respect to their isomers. These molecules are believed to be formed on the surface of the interstellar dust grains and as such, they are susceptible to interstellar hydrogen bonding. In this study, a two way approach using ab initio quantum chemical simulations is considered in optimizing the searches for these molecules in interstellar medium. Firstly, these molecules and their isomers are subjected to the effect of interstellar hydrogen bonding. Secondly, the deuterated analogues of these heterocycles are examined for their possible detectability. From the results, all the heterocycles except furan are found to be strongly bonded to the surfaces of the interstellar dust grains thereby reducing their abundances, thus contributing to their unsuccessful detection. Successful detection of furan remains highly feasible. With respect to their D-analogues, the computed Boltzmann factor indicates that they are formed under the dense molecular cloud conditions where major deuterium fractionation dominates implying very high D/H ratio above the cosmic D/H ratio which suggests the detectability of these deuterated species.
description: Accepted for publication in "Advances in Space Research"
Rezension: „Der österreichische Werbefilm. Die Genese eines Genres von seinen Anfängen bis 1938“ von Karin Moser.
Creators: name: Burger, Michael
Publisher: name: Medienimpulse
Year: 2020

description: Karin Moser geht einem nahezu vergessenen Genre auf den Grund und arbeitet in ihrer sehr gut recherchierten Studie seine Ursprünge, ästhetischen Merkmale und Produktionsbedingungen heraus.
description: Medienimpulse, Bd. 58 Nr. 1 (2020): 1/2020 – Lernen angesichts von Robotik und Computational Thinking
The Modultional Instability for a Generalized KdV Equation
Creators: name: Bronski, Jared C.
name: Johnson, Mathew A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We study the spectral stability of a family of periodic standing wave solutions to the generalized KdV (g-KdV) in a neighborhood of the origin in the spectral plane using what amounts to a rigorous Whitham modulation theory calculation. In particular we are interested in understanding the role played by the null directions of the linearized operator in the stability of the traveling wave to perturbations of long wavelength. A study of the normal form of the characteristic polynomial of the monodromy map (the periodic Evan's function) in a neighborhood of the origin in the spectral plane leads to two different instability indices. The first index counts modulo 2 the total number of periodic eigenvalues on the real axis. This index is a generalization of the one which governs the stability of the solitary wave. The second index provides a necessary and sufficient condition for the existence of a long-wavelength instability. This index is essentially the quantity calculated by Haragus and Kapitula in the small amplitude limit. Both of these quantities can be expressed in terms of the map between the constants of integration for the ordinary differential equation defining the traveling waves and the conserved quantities of the partial differential equation. These two indices together provide a good deal of information about the spectrum of the linearized operator. We sketch the connection of this calculation to a study of the linearized operator - in particular we perform a perturbation calculation in terms of the Floquet parameter. This suggests geometric interpretations attached to the vanishing of the modulational instability index previously mentioned.
description: 35 pages, 3 figures; fixed formula and derivation for modulational instability index
Stochastic EM methods with Variance Reduction for Penalised PET Reconstructions
Creators: name: Kereta, Zeljko
name: Twyman, Robert
name: Arridge, Simon
name: Thielemans, Kris
name: Jin, Bangti
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Expectation-maximization (EM) is a popular and well-established method for image reconstruction in positron emission tomography (PET) but it often suffers from slow convergence. Ordered subset EM (OSEM) is an effective reconstruction algorithm that provides significant acceleration during initial iterations, but it has been observed to enter a limit cycle. In this work, we investigate two classes of algorithms for accelerating OSEM based on variance reduction for penalised PET reconstructions. The first is a stochastic variance reduced EM algorithm, termed as SVREM, an extension of the classical EM to the stochastic context, by combining classical OSEM with insights from variance reduction techniques for gradient descent. The second views OSEM as a preconditioned stochastic gradient ascent, and applies variance reduction techniques, i.e., SAGA and SVRG, to estimate the update direction. We present several numerical experiments to illustrate the efficiency and accuracy of the approaches. The numerical results show that these approaches significantly outperform existing OSEM type methods for penalised PET reconstructions, and hold great potential.
Use of competition indices in the selection of western hemlock plus trees
Creators: name: Thomas, Charles E.
Publisher: name: University of British Columbia
Year: 2010

description: Western hemlock's primary role in an integrated forestry operation is in high density stands which produce a large cubic volume in relatively short rotations. This implies an efficient use of growing space, an important characteristic of the future tree. Selections of individual trees for inclusion in an improvement program should reflect this species management format. The objective of plus tree cruising is to select trees which are phenotypically superior for use in tree improvement breeding programs. The possibility of obtaining a 10-15% improvement in a selection category without waiting 20 to 40 years for results of progeny tests seems economically tempting. Unfortunately, environmental and genetic components of variability in a given trait resist separation in field selections. The objective of this study was to develop selection criteria which reflect two important characteristics: a) rapid growth rate and b) efficient utilization of space or growth under stand competition. ^Permanent sample plots in coastal British Columbia were used to investigate competition, crown characteristics and growth increment in even-aged, second growth stands of western hemlock. Several currently available competition indices were used in five year basal area increment regressions. A regression weighting procedure is described which allows the selection of trees having growth residuals larger than a prescribed confidence interval. The entire plot serves as an environ- mental base line (for selection). A second approach utilizes low level 70 mm aerial photography of crowns. Crown efficiency regressions are developed based on current crown area and five year basal area increment. Again a confidence interval is established with which to select the plus tree candidate. In an additional phase of the study, previously selected trees were visited with the goal of evaluating crown attributes on the basal area increment of these trees. One or more check trees were selected near each of the prior selections; these trees were compared with respect to growth, height, crown area projection, and length of crown. No statistical differences could be found between the two groups reaffirming the value of initial selection intensification.
Proof of Ira Gessel's Lattice Path Conjecture
Creators: name: Kauers, Manuel
name: Koutschan, Christoph
name: Zeilberger, Doron
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A15; 33F10

description: We present a computer-aided, yet fully rigorous, proof of Ira Gessel's tantalizingly simply-stated conjecture that the number of ways of walking $2n$ steps in the region $x+y \geq 0, y \geq 0$ of the square-lattice with unit steps in the east, west, north, and south directions, that start and end at the origin, equals $16^n\frac{(5/6)_n(1/2)_n}{(5/3)_n(2)_n}$ .
Hydrothermal co-liquefaction of synthetic polymers and Miscanthus Giganteus; synergistic and antagonistic effects
Creators: name: Passos, Juliano Souza dos
name: Glasius, Marianne
name: Biller, Patrick
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Synthetic polymers constitute one of the main carbon-containing wastes generated nowadays. In this study, combined hydrothermal liquefaction (co-HTL) is evaluated for 1:1 mixtures of Miscanthus Giganteus and different synthetic polymers including poly-acrylonitrile-butadiene-styrene (ABS), Bisphenol-A based Epoxy resin, high density polyethylene (HDPE), low density polyethylene (LDPE), polyamide 6 (PA6), polyamide 6/6 (PA66), polyethylene terephthalate (PET), polycarbonate (PC), polypropylene (PP), polystyrene (PS) and polyurethane foam (PUR), using batch HTL reactors at 350 °C. Based on mass balances and oil composition, a comprehensive discussion of observed interactions is presented. The results show that even though polyolefins do not depolymerize under these conditions, the oil products depicts that these materials interact with miscanthus oil changing its composition. Bisphenol-A based polymers as PC and epoxy resins both contribute for the formation of monomer-like structures in the oil. PET increases the presence of carboxyl groups, while polyamides and PUR increase significantly the oil yield, modifying oil composition towards nitrogen-containing molecules. PUR co-HTL was found to increase both oil carbon and energy yields, leading to process improvement when compared to pure miscanthus processing.
Nurse leaders' perceptions of registered nurse professionalism: A narrative inquiry
Creators: name: Richards, Gina
Publisher: name: CQUniversity
Year: 2021
Subjects: subject: 111003 Clinical Nursing: Secondary (Acute Care)
subject: FOS: Health sciences
subject: 111099 Nursing not elsewhere classified

description: Aim: The aim of this study was to explore nurse leaders’ perceptions of registered nurse professionalism; expand knowledge related to registered nurse professionalism, and to identify the essential attributes of registered nurse professionalism. Background: Despite the general consensus by members of the public and the healthcare professions that professionalism is essential, a clear understanding of what constitutes professionalism is lacking. Most research studies aim to measure professionalism, with a paucity of research providing clear guidance on how to demonstrate the professional behaviours deemed essential by regulatory authorities and the public. Research design: In this study, narrative inquiry was used to examine professionalism as a fresh and innovative approach in the research of this topic. Through storytelling, nurse leaders voiced their perceptions of the professionalism of the registered nurse in the clinical setting. Through the iterative process of the telling and the retelling of the narratives, the nurse leaders’ voices were allowed to be heard. Data collection and analysis: Twelve nurse leaders were interviewed from the metropolitan healthcare setting in Perth, Western Australia. Data collection consisted of semi-structured interviews, analytical memos and field notes. Focus group interviews were used to verify themes related to the professional attributes of registered nurses in the clinical setting and the influence on these attributes. The two-step approach of Miles et al. (2014) to qualitative data analysis was undertaken. Findings: Four attributes of registered nurse professionalism were identified – respect, professional presence, accountability and collegiality. The influences which impacted on the demonstration of professionalism by the registered nurse were identified as a stable work environment. A professional framework was developed with these attributes and influences. Conclusion: The professional framework developed provides a functional perspective of professionalism. This framework is significant because the attributes are observable and provide a clear and visible understanding of what it means to be a professional registered nurse.
Experimental magnetic form factors in Co3V2O8: A combined study of ab initio calculations, magnetic Compton scattering and polarized neutron diffraction
Creators: name: Qureshi, N.
name: Zbiri, M.
name: Rodríguez-Carvajal, J.
name: Stunault, A.
name: Ressouche, E.
name: Hansen, T. C.
name: Fernández-Díaz, M. T.
name: Johnson, M. R.
name: Fuess, H.
name: Ehrenberg, H.
name: Sakurai, Y.
name: Itou, M.
name: Gillon, B.
name: Wolf, Th.
name: Rodríguez-Velamazan, J. A.
name: Sánchez-Montero, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a combination of ab initio calculations, magnetic Compton scattering and polarized neutron experiments, which elucidate the density distribution of unpaired electrons in the kagome staircase system Co3V2O8. Ab initio wave functions were used to calculate the spin densities in real and momentum space, which show good agreement with the respective experiments. It has been found that the spin polarized orbitals are equally distributed between the t2g and the eg levels for the spine (s) Co ions, while the eg orbitals of the cross-tie (c) Co ions only represent 30% of the atomic spin density. Furthermore, the results reveal that the magnetic moments of the cross-tie Co ions, which are significantly smaller than those of the spine Co ions in the zero-field ferromagnetic structure, do not saturate by applying an external magnetic field of 2 T along the easy axis a, but that the increasing bulk magnetization originates from induced magnetic moments on the O and V sites. The refined individual magnetic moments are mu(Co_c)=1.54(4) mu_B, mu(Co_s)=2.87(3) mu_B, mu(V)=0.41(4) mu_B, mu(O1)=0.05(5) mu_B, mu(O2)=0.35(5) mu_B, and; mu(O3)=0.36(5) mu_B combining to the same macroscopic magnetization value, which was previously only attributed to the Co ions.
Perspectives and challenges in bolide infrasound processing and interpretation: A focused review with case studies
Creators: name: Silber, Elizabeth A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Infrasound sensing plays a critical role in the detection and analysis of bolides, offering passive, cost-effective global monitoring capabilities. Key objectives include determining the timing, location, and yield of these events. Achieving these goals requires a robust approach to detect, analyze, and interpret rapidly moving elevated sources such as bolides (also re-entry and space debris). In light of advancements in infrasonic methodologies, there is a need for a comprehensive overview of the characteristics that distinguish bolides from other infrasound sources, and methodologies for bolide infrasound analysis. This paper provides a focused review of key considerations and presents a unified framework to enhance infrasound processing approaches specifically tailored for bolides. Three representative case studies are presented to demonstrate the practical application of infrasound processing methodologies and deriving source parameters, while exploring challenges associated with bolide-generated infrasound. These case studies underscore the effectiveness of infrasound in determining source parameters and highlight interpretative challenges, such as variations in signal period measurements across different studies. Future research should place emphasis on improving geolocation and yield accuracy. This can be achieved through rigorous and systematic analyses of large, statistically significant samples of such events. aiming to resolve interpretative inconsistencies and explore the causes for variability in signal periods and back azimuths. The topic described here is also relevant to space exploration involving planetary bodies with atmospheres, such as Venus, Mars, and Titan.
description: 42 pages, 13 figures
IT-Kustodinnen und -Kustoden zwischen Heterogenität und Verantwortung.
Creators: name: Swertz, Christian
name: Graf, Christian
Publisher: name: Medienimpulse
Year: 2020

description: Über die Tätigkeit von IT-Kustodinnen und Kustoden ist bisher wenig bekannt. Daher wurde aus der Praxis heraus eine Umfrage entwickelt und durchgeführt, um einen Einblick in Herausforderungen und Probleme zu erhalten. 517 Personen haben die Umfrage beantwortet. Die Ergebnisse zeigen, dass es eine Unzufriedenheit mit bestehenden Regelungen gibt. Die Daten legen nahe, dass die Unzufriedenheit insbesondere mit fehlende Fortbildungsmöglichkeiten und der Notwendigkeit, Wartungsarbeiten in der unterrichtsfreien Zeit, in Zusammenhang steht. Der darin zum Ausdruck kommende Gegensatz zu vorhandenen Angeboten und Möglichkeiten kann mit den Daten nicht erklärt werden.
description: Medienimpulse, Bd. 58 Nr. 1 (2020): 1/2020 – Lernen angesichts von Robotik und Computational Thinking