cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cost Prediction Modelling Of Batch Production In A Manufacturing System For Sheet Metal Fabrication
Creators: name: Bera, Hrishi
Publisher: name: London South Bank University
Year: 1984

description: To the industrial manager, the significant elements of cost involved in batch production hinge on the scheduling of the work through the production processes. The project reported in this thesis centers on the scheduling of work in the form of multiple jobs on multiple machines. Therefore the efficient progress through the production cycle will have a significant bearing on the overall cost of the product. Various methods for solving job-scheduling problems ,including both flow-shop and the job-shop, have been reviewed. In this project algorithms have been developed and tested to determine the waiting time of jobs, the idle time of machines and the elapsed time of all jobs. The number of sequences which are required to be considered in order to determine an optimal solution have been reduced dramatically by selecting pairs rather than single jobs. A forecasting technique, using economical pairs of jobs, has been developed to give an optimal or a very near optimal solution. Further, the techniques developed can find the optimal solution to both the flow-shop and the job-shop problems. Such optimal solution cannot be found by existing published methods. The mathematical models , together with quicker and easier ways of using them, are fully discussed and developed. Emphasis is given to the simplicity of the technique and the speed of calculation.
Low Mach number effect in simulation of high Mach number flow
Creators: name: Hu, X. Y.
name: Adams, N. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this note, we relate the two well-known difficulties of Godunov schemes: the carbuncle phenomena in simulating high Mach number flow, and the inaccurate pressure profile in simulating low Mach number flow. We introduced two simple low-Mach-number modifications for the classical Roe flux to decrease the difference between the acoustic and advection contributions of the numerical dissipation. While the first modification increases the local numerical dissipation, the second decreases it. The numerical tests on the double-Mach reflection problem show that both modifications eliminate the kinked Mach stem suffered by the original flux. These results suggest that, other than insufficient numerical dissipation near the shock front, the carbuncle phenomena is strongly relevant to the non-comparable acoustic and advection contributions of the numerical dissipation produced by Godunov schemes due to the low Mach number effect.
description: 9 pages, 1 figure
Sprachkommandoerkennung auf einem FPGA
Creators: name: Alibrahim, Mohammad
name: Bielefeld, Mattes
name: Bredereke, Jan
name: Celik, Serkay-Günay
name: Dimmel, Moses
name: Gollub, Jesse
name: Hoyer, Marvin
name: Klein, Thomas
name: Korte, Friederike
name: Sajnog, Simon
name: Schramm, Sebastian
name: Schulz, David
name: Schur, Fynn
name: Guimaraes Zimmer, Tobias
Publisher: name: Hochschule Bremen
Year: 2025
Subjects: subject: Sprachkommandoerkennung
subject: neuronales Netz
subject: feldprogrammierbares Gate-Array
subject: FPGA
subject: 0

description: Wir untersuchen am Beispiel einer Sprachkommandoerkennung, wie man ein neuronales Netz in einer stark leistungsbeschränkten Umgebung am besten nutzen kann, indem man ein feldprogrammierbares Gate-Array (FPGA) einsetzt. Das im vorliegenden Bericht beschriebene Projekt baut auf Projekten in früheren Semestern auf, und es wird fortgesetzt werden. Im aktuellen Semester wurden die nötigen Verarbeitungsschritte an neue Audio-Hardware angepasst sowie detaillierter identifiziert und festgelegt. Aus einem aufgetretenen Schnittstellenproblem heraus ergab sich eine neue Einsicht zu einer Systemarchitektur für eine effiziente Verarbeitung auf einem FPGA. Bei den einzelnen Teilaufgaben wurden ansonsten bedauerlicherweise keine wesentlichen Fortschritte gegenüber dem Vorgängerprojekt erzielt. Im Ausblick am Ende fassen wir den aktuellen Stand der Ideen zusammen, wie die laufende Serie von Mini-Projekten fortgesetzt werden kann.
The center of twisted affine quantum algebras at odd roots of 1
Creators: name: Damiani, Ilaria
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: This paper focuses on twisted affine quantum algebras: an integer form is chosen, and the center of its specialization at odd roots of 1 (of order bigger than 3 in case D_4^{(3)}, bigger than 1 otherwise) is described.
description: 8 pages
A new method of integrating epidemiological and health services modelling techniques for studying infectious diseases : an example using HIV/AIDS
Creators: name: Johnston, Karissa Michelle
Publisher: name: University of British Columbia
Year: 2010

description: Since the introduction in 1996 of highly active antiretroviral therapy (HAART) for treating individuals infected with HIV, morbidity and mortality among individuals who access care in a timely fashion have dramatically decreased. As a result, patterns of health services utilization have shifted from hospitalizations and acute care services to outpatient services and medications. An additional implication of increased HAART coverage has been a reduction in HIV-1 viral load amongst treated individuals. Individuals with lower viral load are less likely to transmit HIV infection to uninfected individuals. A resulting hypothesis is that increasing treatment with HAART—either by treating individuals earlier in their infection or by expanding treatment coverage rate to a greater proportion of infected individuals—could potentially lead to reduced rates of HIV transmission. To date, the results of ecological studies and mathematical modelling studies have been consistent with this hypothesis. The objectives in this dissertation were: to build a computational tool that could be used to answer complex questions regarding the economics of HIV during the HAART era in British Columbia (BC), Canada; and to address specific economic questions relevant to the current treatment of HIV in BC. The particular questions of interest included: the monthly costs associated with various categories of health services utilization and the correlation between categories (Chapter 3); the expected long-term incidence and costs associated with hospitalizations after initiation of HAART (Chapter 4); the lifetime direct medical costs associated with an individual infected with HIV during the HAART era (Chapter 5); and the cost-effectiveness of a strategy to increase HAART coverage from 50% to 75% of clinically eligible individuals, accounting for individual-level and population-level effects of HAART (Chapter 6). These questions were addressed using a variety of statistical and mathematical techniques, based on a BC-specific population-based data source. A key finding with important public health relevance was that use of HAART was associated with decreases in other categories of direct medical costs. These cost offsets were due to both an improvement in morbidity resulting in a reduced need for acute health care services and, more importantly, a reduction in HIV incidence.
How is the magnetic reconnection derived from magnetohydrodynamics equations?
Creators: name: Tashiro, Tohru
name: Kakuta, Wakako
Publisher: name: arXiv
Year: 2012
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We clarify how magnetic reconnection can be derived from magnetohydrodynamics (MHD) equations in a way that is easily understandable to university students. The essential mechanism governing the time evolution of the magnetic field is diffusion dynamics. The magnetic field is represented by two components. It is clarified that the diffusion of a component causes a generation of another component that is initially zero and, accordingly, that the magnetic force lines are reconnected. For this reconnection to occur correctly, the initial magnetic field must be directed oppositely in the two regions, e.g., $y>0$ and $y<0$; must be concave (convex) for $y>0$ ($y<0$); and must be saturated for $y$ far from the x axis, which would indicate the existence of the current sheet. It will be clear that our comprehension based on diffusion runs parallel to the common qualitative explanation about the magnetic reconnection.
Field Theory of Fluctuations in Glasses
Creators: name: Franz, Silvio
name: Parisi, Giorgio
name: Ricci-Tersenghi, Federico
name: Rizzo, Tommaso
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We develop a field-theoretical description of dynamical heterogeneities and fluctuations in supercooled liquids close to the (avoided) MCT singularity. Using quasi-equilibrium arguments we eliminate time from the description and we completely characterize fluctuations in the beta regime. We identify different sources of fluctuations and show that the most relevant ones are associated to variations of "self-induced disorder" in the initial condition of the dynamics. It follows that heterogeneites can be describes through a cubic field theory with an effective random field term. The phenomenon of perturbative dimensional reduction ensues, well known in random field problems, which implies an upper critical dimension of the theory equal to 8. We apply our theory to finite size scaling for mean-field systems and we test its prediction against numerical simulations.
Human Rights Education in Israel: Four Types of Good Citizenship
Creators: name: Agbaria, Ayman Kamel
name: Katz-Pade, Revital
Publisher: name: sowi-online e.V., Bielefeld
Year: 2016

description: This article examines the involvement of civil society organizations in human rights education (HRE) in Israel. Focussing on the educational programs of the Association for Civil Rights in Israel (ACRI), as a qualitative instrumental case study, this article examines the conceptions of good citizenship embedded in these programs. Specifically, the article analyzes the educational programs’ goals, content, targeted populations, and practices. The analysis revealed that ACRI’s HRE model reflect four ideal types of citizens: citizen of a democratic liberal state, citizen of a participatory polity, citizen of an ethical profession, and citizen of an empowered community. These constitute a multilayered human rights discourse that enables ACRI to engage differentially with various sectors and populations, while still remaining faithful to the ethno-national parameters of a Jewish and democratic state political framework.
description: JSSE - Journal of Social Science Education, 2-2016 Controversial Issues in the Political Classroom
Globalization as Continuing Colonialism – Critical Global Citizenship Education in an Unequal World
Creators: name: Mikander, Pia
Publisher: name: sowi-online e.V., Bielefeld
Year: 2016

description: In an unequal world, education about global inequality can be seen as a controversial but necessary topic for social science to deal with. Even though the world no longer consists of colonies and colonial powers, many aspects of the global economy follow the same patterns as during colonial times, with widening gaps between the world’s richest and the world’s poorest. An analysis of Finnish textbook texts includes practical examples of how globalization is portrayed within basic education. It reveals that the textbooks vary in their interpretations of the relationship between colonialism and globalization. The people of the North are rarely portrayed as responsible for the poverty in the South. Globalization is not described as a politically implicated phenomenon. The article also presents the critical global citizenship education initiative as an approach to the topic. It suggests that students can learn to challenge common assumptions that conceal the historical and structural roots of power relations. Teaching about privilege can be seen as another supplementary method to help students understand their position in the world.
description: JSSE - Journal of Social Science Education, 2-2016 Controversial Issues in the Political Classroom
Effect of oxidation on the Mechanical Properties of Liquid Gallium and Eutectic Gallium-Indium
Creators: name: Xu, Qin
name: Qudalov, Nikolai
name: Guo, Qiti
name: Jaeger, Heinrich
name: Brown, Eric
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Liquid metals exhibit remarkable mechanical properties, in particular large surface tension and low viscosity. However, these properties are greatly affected by oxidation when exposed to air. We measure the viscosity, surface tension, and contact angle of gallium (Ga) and a eutectic gallium-indium alloy (eGaIn) while controlling such oxidation by surrounding the metal with an acid bath of variable concentration. Rheometry measurements reveal a yield stress directly attributable to an oxide skin that obscures the intrinsic behavior of the liquid metals. We demonstrate how the intrinsic viscosity can be obtained with precision through a scaling technique that collapses low- and high-Reynolds number data. Measuring surface tension with a pendant drop method, we show that the oxide skin generates a surface stress that mimics surface tension and develop a simple model to relate this to the yield stress obtained from rheometry. We find that yield stress, surface tension, and contact angle all transition from solid-like to liquid behavior at the same critical acid concentration, thereby quantitatively confirming that the wettability of these liquid metals is due to the oxide skin.
description: 18 pages, 9 figures
Locomotion and Obstacle Avoidance of a Worm-like Soft Robot
Creators: name: Even, Sean
name: Ozkan-Aydin, Yasemin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper presents a soft earthworm robot that is capable of both efficient locomotion and obstacle avoidance. The robot is designed to replicate the unique locomotion mechanisms of earthworms, which enable them to move through narrow and complex environments with ease. The robot consists of multiple segments, each with its own set of actuators, that are connected through rigid plastic joints, allowing for increased adaptability and flexibility in navigating different environments. The robot utilizes proprioceptive sensing and control algorithms to detect and avoid obstacles in real-time while maintaining efficient locomotion. The robot uses a pneumatic actuation system to mimic the circumnutation behavior exhibited by plant roots in order to navigate through complex environments. The results demonstrate the capabilities of the robot for navigating through cluttered environments, making this development significant for various fields of robotics, including search and rescue, environmental monitoring, and medical procedures.
An analysis of economic growth in India
Creators: name: Gupta, Abhay
Publisher: name: University of British Columbia
Year: 2010

description: This dissertation is an empirical study of economic growth in India over the period of 1960-2004. The objective of the first chapter is to provide robust and reproducible period-wise growth estimates for India. Detailed growth accounting shows that without accounting for human capital, total factor productivity (TFP)differences over time account for 48% to 69% of the output variation. If we include the role of education, TFP growth accounts for 35% to 70% of the total GDP growth between 1960 and 2004. Starting from a modest rate in the 1960s, productivity growth dipped and became negative in the 1970s. This productivity growth rate began accelerating during the 1980s and it grew at an average rate of around 3% in the 1990s. Chapter 2 calculates a large set of productivity growth estimates using the Annual Survey of Industries data. The results show that even though the net-value-added for all registered manufacturing grew at around 4.4% per year, the average yearly TFP growth rate was only 2.2%. In the sub-period of 1991-1997, input growth jumped but TFP growth became negative. But after 1998, the trend is reversed and output grows because of positive and large TFP growth in spite of the moderating input growth. Production function estimates show that in gross output the share of materials is 0.6, much larger than the capital and the labor shares. “Public corporations” experienced significant TFP growth after the reforms. The last chapter provides an explanation for the sluggish performance of Indian manufacturing before the reforms. The interaction of quantitative restriction policies and inflexible labor laws distorted the allocation of resources between intermediate inputs and labor inputs. Moreover, the combination of high inflation and the unavailability of credit exacerbated this factor distortion and lowered productivity growth further. Using panel data on Indian industries, this chapter finds underutilization of materials compared to labor until recently. The productivity growth is negatively related to labor growth and positively related to materials growth. Real wages and labor productivity are negatively related to materials inflation and this relationship breaks down after the capital market reforms in the 1990s.
Turkish Social Studies Teachers’ Thoughts About the Teaching of Controversial Issues
Creators: name: Copur, Ahmet
name: Demirel, Muammer
Publisher: name: sowi-online e.V., Bielefeld
Year: 2016

description: In today’s world, one of the primary goals of education is to raise individuals as citizens equipped with the skills of communication, high-level thinking, problem solving and questioning as well as with a global viewpoint. Introducing controversial issues into the classroom environment may be among the steps to be taken to achieve these goals. In this context, this study has the primary goal of revealing Social Studies teachers’ thoughts about the teaching of controversial issues in the classroom environment. This study adopted mixed methods. The study participants consisted of Social Studies teachers working in Bursa, which is a large-scale province of Turkey, in the 2014-2015 school year. According to the study findings, while terror was the most controversial issue, faith in creation was the least controversial issue. In addition, teachers mainly preferred to introduce issues related to the Social Studies curriculum and that were appropriate for the students’ preparedness. However, another result is that controversial issues contributed to students’ acquisition of personal critical skills such as high-level thinking and communication. It was also observed that the teaching of controversial issues was related to the Social Studies lesson and was important for the achievement of the goals of the lesson.
description: JSSE - Journal of Social Science Education, 2-2016 Controversial Issues in the Political Classroom
Teachers’ Stories of Engaging Students in Controversial Action Projects on the Island of Ireland
Creators: name: McSharry, Majella
name: Cusack, Mella
Publisher: name: sowi-online e.V., Bielefeld
Year: 2016

description: Civic, Social and Political Education (CSPE) in the Republic of Ireland and Local and Global Citizenship (LGC) in Northern Ireland keenly promote students’ active participation in society. However, the purpose of this participation is not necessarily to encourage students to campaign for change in the present but rather that ‘students are given opportunities to engage in actions and develop skills that will contribute to their becoming active participatory citizens in later life’ (NCCA (2005) CSPE Guidelines for Teachers, p. 59). This often gives rise to a culture of passive citizenship and a tendency to focus on ‘action projects’ that are safe and self-contained.

This paper focuses on a five action projects carried out by a sample of teachers and students that may be considered ‘controversial’. In each case students actively campaign for equality and social justice, on local or global human rights issues and in ways that may be deemed controversial. It examines how the mainstream curriculum and school structures facilitate or impede this type of controversial action and explores the potential opportunities for greater engagement in such action through proposed curriculum reform.
description: JSSE - Journal of Social Science Education, 2-2016 Controversial Issues in the Political Classroom
Two Perspectives on the Book: Reinhardt, Sibylle. 2015. Teaching Civics. A Manual for Secondary Education Teachers,  Leverkusen: Barbara Budrich Publishers
Creators: name: Lalor, John
name: Christensen, Anders Stig
Publisher: name: sowi-online e.V., Bielefeld
Year: 2016

description: JSSE - Journal of Social Science Education, 2-2016 Controversial Issues in the Political Classroom
Stable Real-Time Feedback Control of a Pneumatic Soft Robot
Creators: name: Even, Sean
name: Zheng, Tongjia
name: Lin, Hai
name: Ozkan-Aydin, Yasemin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Soft actuators offer compliant and safe interaction with an unstructured environment compared to their rigid counterparts. However, control of these systems is often challenging because they are inherently under-actuated, have infinite degrees of freedom (DoF), and their mechanical properties can change by unknown external loads. Existing works mainly relied on discretization and reduction, suffering from either low accuracy or high computational cost for real-time control purposes. Recently, we presented an infinite-dimensional feedback controller for soft manipulators modeled by partial differential equations (PDEs) based on the Cosserat rod theory. In this study, we examine how to implement this controller in real-time using only a limited number of actuators. To do so, we formulate a convex quadratic programming problem that tunes the feedback gains of the controller in real time such that it becomes realizable by the actuators. We evaluated the controller's performance through experiments on a physical soft robot capable of planar motions and show that the actual controller implemented by the finite-dimensional actuators still preserves the stabilizing property of the desired infinite-dimensional controller. This research fills the gap between the infinite-dimensional control design and finite-dimensional actuation in practice and suggests a promising direction for exploring PDE-based control design for soft robots.
Supplementary Material for van der Graaf, et al., 2020
Creators: name: Graaf, Kevin Van Der
name: Jindrich, Katia
name: Mitchell, Robert
name: White-Cooper, Helen
Publisher: name: GSA Journals
Year: 2020
Subjects: subject: Developmental Biology
subject: 60405 Gene Expression (incl. Microarray and other genome-wide approaches)
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Genetics

description: Supplementary methods, figures and tables for G3-2020-402034
Review of the Book: Diana Hess; Paula McAvoy. 2015, The Political Classroom. Evidence and Ethics in Democratic Education New York/London: Routledge.
Creators: name: Gebauer, Bernt
Publisher: name: sowi-online e.V., Bielefeld
Year: 2016

description: JSSE - Journal of Social Science Education, 2-2016 Controversial Issues in the Political Classroom
Coupling Nitrogen-Vacancy Centres in Diamond to a Grape Dimer Cavity
Creators: name: Fawaz, Ali
Publisher: name: Macquarie University
Year: 2023
Subjects: Other education not elsewhere classified

description: Efficient coupling between microwave fields and solid-state spins is essential in many quantum technology applications, such as spin-based magnetic field sensors or (room-temperature) masing devices. This thesis investigates the coupling of an ensemble of Nitrogen-Vacancy (NV) centre spins in nanodiamonds to a novel type of microwave resonator, consisting of dielectric spherical or ellipsoidal dimers, which exhibit high-intensity magnetic field hotspots due to morphological-dependent resonances. Specifically, the thesis explores the use of grapes as building blocks for those resonators. Numerical modelling was performed to demonstrate the formation of magnetic field hotspots in grape dimers. In parallel, nanodiamonds with NV spin ensembles were placed between actual grape dimers and optically detected magnetic resonance (ODMR) measurements were carried out for characterisation. In the presence of grape dimers, the magnetic field was estimated to be more than double compared to measurements without grape dimers. The demonstration of NV spins interacting with the magnetic field in the hotspot between grape dimers serves as an initial step in constructing precise and more efficient cavity resonators based on a spherical or ellipsoidal dielectric design. Such cavities may lead to a low-cost and more effective alternative to existing techniques.
Quartic Horndeski-Cartan theories in a FLRW universe
Creators: name: Mironov, S.
name: Valencia-Villegas, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the Quartic Horndeski theory with torsion on a FLRW background in the second order formalism. We show that there is a one parameter family of Quartic Horndeski Cartan Lagrangians and all such theories only modify the dispersion relations of the graviton and the scalar perturbation that are usually found in the standard Horndeski theory on a torsionless spacetime. In other words, for the theories in this class torsion does not induce new degrees of freedom but it only modifies the propagation. This holds for first order perturbations in spite of a kinetic mixing between the Horndeski scalar with the torsion field in the action. We also show that for most Lagrangians within the family of Quartic Horndeski Cartan theories the dispersion relation of the scalar mode is radically modified. We find only one theory within the family whose scalar mode has a regular wave-like dispersion relation.
description: 25 pages, 3 figures. Matches version published in PRD. Expanded discussions, references added, results unchanged
Report on the Present Trainer Training Course of the Pestalozzi Programme (Council of Europe) “Evaluation of Transversal Attitudes, Skills and Knowledge” (Module A)
Creators: name: Gebauer, Bernt
Publisher: name: sowi-online e.V., Bielefeld
Year: 2016

description: .
description: JSSE - Journal of Social Science Education, 2-2016 Controversial Issues in the Political Classroom
The fast spiral-in of the companion star to the black hole XTE J1118+480
Creators: name: Hernández, Jonay I. González
name: Rebolo, Rafael
name: Casares, Jorge
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of an orbital period decay of $\dot P=-1.83\pm0.66$ ms yr$^{-1}$ in the black hole X-ray binary XTE J1118+480. This corresponds to a period change of $-0.85\pm0.30$ $μ$s per orbital cycle, which is $\sim 150$ times larger than expected from the emission of gravitational waves. These observations cannot be reproduced by conventional models of magnetic braking even when including significant mass loss from the system. The spiral-in of the star is either driven by magnetic braking under extremely high magnetic fields in the secondary star or by a currently unknown process, which will have an impact on the evolution and lifetime of black hole X-ray binaries.
description: accepted for publication in ApJ letters
Neutron skins and neutron stars
Creators: name: Fattoyev, F. J.
name: Piekarewicz, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Background: The neutron skin of a heavy nucleus as well as many neutron-star properties are highly sensitive to the poorly constrained density dependence of the symmetry energy. Purpose: To provide for the first time meaningful theoretical errors and to assess the degree of correlation between the neutron-skin thickness of ${}^{208}$Pb and several neutron-star properties. Methods: A proper covariance analysis based on the predictions of an accurately-calibrated relativistic functional {\sl "FSUGold"} is used to quantify theoretical errors and correlation coefficients. Results: We find correlation coefficients of nearly one (or minus one) between the neutron-skin thickness of ${}^{208}$Pb and a host of observables of relevance to the structure, dynamics, and composition of neutron stars. Conclusions: We suggest that a follow-up PREX measurement, ideally with a 0.5% accuracy, could significantly constrain the equation of state of neutron-star matter.
description: 15 pages, 9 figures, 5 tables
Dust driven mass loss from carbon stars as function of stellar parameters - II. Effects of grain size on wind properties
Creators: name: Mattsson, Lars
name: Höfner, Susanne
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: [Abridged] In this paper we explore grain size effects on wind properties of carbon stars, using a generalized description of radiative cross sections valid for particles of arbitrary sizes. The purpose of the study is to investigate under which circumstances the small particle limit (SPL) may give acceptable results, and to quantify the possible errors that may occur when it does not hold. The time-dependent description of grain growth in our detailed radiation-hydrodynamical models gives information about dust particle radii in every layer at every instant of time. These grain radii are used for computing opacities and determining the radiative acceleration of the dust-gas mixture. It is shown that in the critical cases the effect of the generalized description of dust opacities can be significant, resulting in more intense mass loss and higher wind velocities compared to models using SPL opacities. For well-developed winds, however, grain size effects on mass loss rates and wind velocities are found to be small. Both groups of models tend towards lower degrees of dust condensation compared to corresponding SPL models, due to a self-regulating feedback between grain growth and radiative acceleration. Consequently, the "dust-loss rates" are lower in the models with the generalized treatment of grain opacities. We conclude that our previous results on mass loss rates obtained with SPL opacities are reliable within a wide region of stellar parameter space, except for critical cases close to thresholds of dust-driven outflows where SPL models will tend to underestimate the mass loss rates and wind velocities.
description: 10 pages, 5 figures, accepted for publication in A&A. Revised version after language editing
Bolitophila saundersii
Creators: name: El Mouden, Mohamed Amin
name: Chandler, Peter J.
name: Saidoun, Imane
name: Driauach, Ouafaa
name: Belqat, Boutaïna
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Bolitophilidae
Bolitophila
Bolitophila saundersii

description: Bolitophila saundersii (Curtis, 1836)
Material examined.
Morocco – Middle Atlas Region • 1 ♂; Oued Taourirt; 20/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2402.
North African distribution.
Algeria (Burghele-Balacesco 1967); Morocco (Driauach et al. 2022).
description: Published as part of El Mouden, Mohamed Amin, Chandler, Peter J., Saidoun, Imane, Driauach, Ouafaa & Belqat, Boutaïna, 2025, A new species of Docosia Winnertz, 1864 and new records of fungus gnats (Diptera, Bolitophilidae, Keroplatidae and Mycetophilidae) from North Africa, pp. 349-379 in ZooKeys 1233 on pages 349-379, DOI: 10.3897/zookeys.1233.130502
Identification of Bursting Water Maser Features in Orion KL
Creators: name: Hirota, Tomoya
name: Tsuboi, Masato
name: Fujisawa, Kenta
name: Honma, Mareki
name: Kawaguchi, Noriyuki
name: Kim, Mi Kyoung
name: Kobayashi, Hideyuki
name: Imai, Hiroshi
name: Omodaka, Toshihiro
name: Katsunori
name: Shibata, M.
name: Shimoikura, Tomomi
name: Yonekura, Yoshinori
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In February 2011, a burst event of the H$_{2}$O maser in Orion KL (Kleinmann-Low object) has started after 13-year silence. This is the third time to detect such phenomena in Orion KL, followed by those in 1979-1985 and 1998. We have carried out astrometric observations of the bursting H$_{2}$O maser features in Orion KL with VERA (VLBI Exploration of Radio Astrometry), a Japanese VLBI network dedicated for astrometry. The total flux of the bursting feature at the LSR velocity of 7.58 km s$^{-1}$ reaches 4.4$\times10^{4}$ Jy in March 2011. The intensity of the bursting feature is three orders of magnitudes larger than that of the same velocity feature in the quiescent phase in 2006. Two months later, another new feature appears at the LSR velocity of 6.95 km s$^{-1}$ in May 2011, separated by 12 mas north of the 7.58 km s$^{-1}$ feature. Thus, the current burst occurs at two spatially different features. The bursting masers are elongated along the northwest-southeast direction as reported in the previous burst in 1998. We determine the absolute positions of the bursting features for the first time ever with a submilli-arcsecond (mas) accuracy. Their positions are coincident with the shocked molecular gas called the Orion Compact Ridge. We tentatively detect the absolute proper motions of the bursting features toward southwest direction. It is most likely that the outflow from the radio source I or another young stellar object interacting with the Compact Ridge is a possible origin of the H$_{2}$O maser burst.
description: 12 pages, 3 figures, accepted for publication in ApJL
Room temperature ballistic transport in InSb quantum well nanodevices
Creators: name: Gilbertson, A. M.
name: Kormanyos, A.
name: Buckle, P. D.
name: Fearn, M.
name: Ashley, T.
name: Lambert, C. J.
name: Solin, S. A.
name: Cohen, L. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report the room temperature observation of significant ballistic electron transport in shallow etched four-terminal mesoscopic devices fabricated on an InSb/AlInSb quantum well (QW) heterostructure with a crucial partitioned growth-buffer scheme. Ballistic electron transport is evidenced by a negative bend resistance signature which is quite clearly observed at 295 K and at current densities in excess of 10$^{6}$ A/cm$^{2}$. This demonstrates unequivocally that by using effective growth and processing strategies, room temperature ballistic effects can be exploited in InSb/AlInSb QWs at practical device dimensions.
High-speed manufacturing-driven strength-ductility improvement of H13 tool steel fabricated by selective laser melting
Creators: name: Kim, Yeon Woo
name: Park, Haeum
name: Eom, Young Seong
name: Ahn, Dong Gill
name: Kim, Kyung Tae
name: Yu, Ji-hun
name: Choi, Yoon Suk
name: Park, Jeong Min
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology

description: H13 tool steel was additively manufactured by selective laser melting (SLM). The sample printed at a higher laser scan speed exhibited higher strength and ductility than those of the sample printed at a lower speed. The samples were repeatedly exposed to a massive heat input during the SLM. The in-situ tempering effect was applied to the sample; the phase fraction is changed by varying the heat input by controlling the laser scan speed. The microstructure analysis showed that the sample printed at a higher scan speed had a higher fraction of retained austenite than at a lower speed. The former was affected by deformation-induced martensitic transformation with enhanced strain-hardening ability. This study entailed the control of process parameters to improve the mechanical properties and the productivity of SLM-printed H13 tool steel. It investigated the relationship between the laser scan speed and the phase fraction, whose effect on the mechanical properties was confirmed.
Changes in dense-body structures in airway smooth muscle adapted to different lengths
Creators: name: Zhang, Jie
Publisher: name: University of British Columbia
Year: 2010

description: Dense bodies in smooth muscle are thought to be the equivalents of Z-disks found in striated muscle. Using three-dimensional reconstruction of serial sections of electron micrographs of ASM, we have confirmed previous studies showing that dense-body (DB) aggregates inside smooth muscle cells resemble “stringy” structures lying in parallel with the myosin filaments. We found that the cable-like structure consists of DBs closely strung together by actin and intermediate filaments. This finding questions the conventional belief that DBs play the role of the Z-disks. In this study we examined further the structural changes in the DB “cable” in ovine tracheal smooth muscle adapted to different lengths (length adaptation); specifically we examined the length ratio between the DB cable length (in three-dimensional space) and the segment length of the muscle cell in which the cable was embedded. This length ratio, or normalized DB-cable length, gave us a measurement of the “slackness” of the DB cables in the cell. Length adaptation was a process in which ASM regained its force generating capacity after a change in the length of the muscle cell. The process involved brief (10 see) electrical field stimulations once every 5 mm applied to the muscle held isometrically. With a 50% muscle shortening, the average normalized DB-cable length increased by 10%, the cables then straightened out slightly but significantly during length adaptation to the shortened length, decreasing the length by 3% from the 10% increase. With a 50% stretch, the average normalized DB-cable length decreased by -15% and 27% in the length adapted and non-adapted states, respectively. The most significant finding of this study is that passive tension in ASM cells is negatively correlated to the normalized DB-cable length (DB-cable/cell-segment length ratio). That is, higher passive tension is associated tauter DB cables. This suggests that the DB cables may be important in maintaining passive tension in smooth muscle cells. Understanding how DB cables adapt to length changes and how their structural integrity is modulated intracellularly is important for a better understanding of the roles ASM plays in the stiffening of airways and pathophysiology of asthma.
The population of Young Stellar Clusters throughout the disk of M33
Creators: name: Sharma, Saurabh
name: Corbelli, Edvige
name: Giovanardi, Carlo
name: Hunt, Leslie K.
name: Palla, Francesco
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The properties of young stellar clusters (YSCs) in M33, identified from the center out to about twice the size of the bright star-forming disk,are investigated. We find 915 discrete MIR sources as far as the extent of the warped HI disk, i.e. 16 kpc from the galaxy center. Their surface density has a steep radial decline beyond 4.5 kpc, and flattens out beyond the optical radius at 8.5 kpc. We are able to identify YSCs out to 12 kpc. At large galactocentric radii, the paucity of very luminous clusters and the relevance of hot dust emission become evident from the analysis of the bolometric and MIR luminosity functions. The YSC mass and size are correlated with a log-log slope of 2.09, similar to that measured for giant molecular clouds in M33 and the Milky Way, which represent the protocluster environment. Most of the YSCs in our sample have low extinction and ages between 3 and 10 Myr. In the inner regions of M33 the clusters span a wide range of mass (10^2
description: Accepted for publication in A&A, 16 pages, 14 figures
Does the Mexican sugar-sweetened beverage tax have a signaling effect? ENSANUT 2016
Creators: Alvarez Sanchez, Cristina
Contento, Isobel R.
Jiménez-Aguilar, Alejandra
Koch, Pamela Ann
Lee Gray, Heewon
Guerra, Laura Ann
Rivera-Dommarco, Juan
Uribe-Carvajal, Rebeca
Shamah-Levy, Teresa
Publisher: name: Columbia University
Year: 2018
Subjects: Beverages--Taxation
Nutrition
Nutrition surveys
Soft drinks
Mexicans--Health and hygiene
Health education

description: Objective
To evaluate the potential signaling effect of the Mexican tax on sugar-sweetened beverages (SSBs) by analyzing the association between awareness of and opinions about its effectiveness with current consumption of taxed SSBs and with a self-reported change in consumption of SSBs since the implementation of the tax. We also examined the association between psychosocial and environmental determinants of SSB consumption with current consumption of taxed SSBs and with a reported change in consumption of SSBs.

Methods
Cross-sectional analyses of survey and food-frequency questionnaire data from the Mexican National Health and Nutrition Survey 2016. Participants were Mexican adults (20–59 years, N = 6,650). Logistic regression was used to evaluate the probability of a person reporting a decrease in SSB consumption, given their awareness of the tax, opinion about its effectiveness, psychosocial (SSB health-related beliefs, self-efficacy, and liking of SSBs) and environmental (availability of potable water) determinants. Multiple linear regression analysis was utilized to examine the association between the aforementioned factors and current consumption of taxed SSBs.

Results
Compared with adults not aware, adults who were aware of the SSB tax were more likely (OR = 1.30) to report a decrease in SSB consumption (p = .012). In urban areas, adults aware of the tax drank a significantly lower amount of taxed SSBs (-15.7%; p = .023) than those not aware. Self-efficacy and liking of SSBs were significantly associated with a reported decrease in consumption and with current consumption (p < .001), while health beliefs and availability of potable water were not significantly associated with either reported change in SSB consumption or current consumption of taxed SSBs.

Conclusions
Implementation of an SSB tax accompanied by highly visible campaigns may further influence the impact of taxes on SSBs consumption. Future public health and nutrition education campaigns designed to increase knowledge and enhance motivation should be complemented by programs to assist individuals develop self-efficacy and self-regulation skills.
Seven transiting hot-Jupiters from WASP-South, Euler and TRAPPIST: WASP-47b, WASP-55b, WASP-61b, WASP-62b, WASP-63b, WASP-66b & WASP-67b
Creators: name: Hellier, Coel
name: Anderson, D. R.
name: Cameron, A. Collier
name: Doyle, A. P.
name: Gillon, M.
name: Jehin, E.
name: Lendl, M.
name: Maxted, P. F. L.
name: Pepe, F.
name: Pollacco, D.
name: Queloz, D.
name: Segransan, D.
name: Smalley, B.
name: Smith, A. M. S.
name: Southworth, J.
name: Triaud, A. H. M. J.
name: Udry, S.
name: West, R. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present seven new transiting hot Jupiters from the WASP-South survey. The planets are all typical hot Jupiters orbiting stars from F4 to K0 with magnitudes of V = 10.3 to 12.5. The orbital periods are all in the range 3.9--4.6 d, the planetary masses range from 0.4--2.3 Mjup and the radii from 1.1--1.4 Mjup. In line with known hot Jupiters, the planetary densities range from Jupiter-like to inflated (rho = 0.13--1.07 rho_jup). We use the increasing numbers of known hot Jupiters to investigate the distribution of their orbital periods and the 3--4-d "pile-up".
description: 15 pages
Massnahmen zur Verminderung von Belastungen und zur Förderung von Ressourcen
Creators: name: Keller, Léonie
Publisher: name: Hochschule für Angewandte Psychologie FHNW
Year: 2023
Subjects: subject: 330 - Wirtschaft

description: Die vorliegende Arbeit beschäftigt sich mit den Belastungen und Ressourcen der Mitarbeitenden, welche für die Dolder AG in der Schweiz tätig sind. Zur Beantwortung der Fragestellung, welche Massnahmen ergriffen werden können, um Belastungen zu mindern und Ressourcen zu fördern, wurde eine Evaluation mittels des Mixed-Methods-Ansatz durchgeführt. Dabei wurden die Mitarbeitenden mittels einer Onlinebefragung (n=27) nach ihrem subjektiven Empfinden betreffend den Belastungen und Ressourcen bei der Arbeit erfragt. Anschliessend wurden zwei problemzentrierte Interviews (n=2) mit Mitarbeitenden durchgeführt, um mehr Informationen zu sammeln und um über mögliche Handlungsempfehlungen zu diskutieren. Die Belastungen „Arbeitsunterbrechungen“ und „Zeitdruck“ standen dabei im Fokus. Durch die Grundlage aus der Theorie und den Ergebnissen aus der quantitativen und qualitativen Erhebung konnten praxisnahe Handlungsmassnahmen abgegeben werden.
Wie kann Vertrauen zwischen der Führungskraft und Mitarbeitenden im mobil-flexiblen Arbeitskontext aufgebaut und erhalten werden?
Creators: name: Kappeler, Franziska
Publisher: name: Hochschule für Angewandte Psychologie FHNW
Year: 2023
Subjects: subject: 330 - Wirtschaft

description: Die Axa Schweiz AG (Axa) führte im Jahr 2021 das Arbeitskonzept Smart Work ein. Gemäss diesem wird ein Teil der Arbeitszeit am Büroarbeitsplatz gearbeitet, ein Teil von unterwegs, einem anderen Standort oder von zu Hause aus. In dieser MAS Thesis wird untersucht, wie Vertrauen zwischen Führungskraft und Mitarbeitenden im mobil-flexiblen Arbeitsumfeld aufgebaut und erhalten werden kann. Die Arbeit beleuchtet zudem, welchen Einfluss Vertrauen auf das Verhältnis zwischen der Organisation und ihren Arbeitnehmenden hat. Mittels Literaturrecherche werden wesentliche Aspekte aufgezeigt, was unter dem Begriff Vertrauen verstanden und wie es aufgebaut wird. Die Vertrauensthematik wird aus verschiedenen Blickwinkeln im Kontext des mobil-flexiblen Arbeitsumfelds betrachtet. In einer qualitativen Untersuchung wurden acht narrative Interviews mit Führungskräften und Mitarbeitenden der Axa geführt, um zu evaluieren, wie sie Vertrauen in ihrem Arbeitsalltag erleben und die geschilderten Erlebnisse mit den Erkenntnissen aus der Literatur abzugleichen. Aufgrund der gewonnen Einsichten werden konkrete Handlungsempfehlungen für die Axa abgegeben.