cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Classicalization of Gravitons and Goldstones
Creators: name: Dvali, Gia
name: Gomez, Cesar
name: Kehagias, Alex
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We establish a close parallel between classicalization of gravitons and derivatively-coupled Nambu-Goldstone-type scalars. We show, that black hole formation in high energy scattering process represents classicalization with the classicalization radius given by Schwarzschild radius of center of mass energy, and with the precursor of black hole entropy being given by number of soft quanta composing this classical configuration. Such an entropy-equivalent is defined for scalar classicalons also and is responsible for exponential suppression of their decay into small number of final particles. This parallel works in both ways. For optimists that are willing to hypothesize that gravity may indeed self-unitarize at high energies via black hole formation, it illustrates that the Goldstones may not be much different in this respect, and they classicalize essentially by similar dynamics as gravitons. In the other direction, it may serve as an useful de-mystifier of via-black-hole-unitarization process and of the role of entropy in it, as it illustrates, that much more prosaic scalar theories essentially do the same. Finally, it illustrates that in both cases classicalization is the defining property for unitarization, and that it sets-in before one can talk about accompanying properties, such as entropy and thermality of static classicalons (black holes). These properties are by-products of classicalization, and their equivalents can be defined for non-gravitational cases of classicalization.
description: 23 pages
Das Scholar-led.network-Manifest
Creators: name: Fokusgruppe Scholar-Led.Network
Publisher: name: Zenodo
Year: 2021
Subjects: Open Access
scholar-led
Bibliodiversität

description: Wir sind das scholar-led.network und setzen uns gemeinsam und kollaborativ für eine von Großverlagen unabhängige, nicht profitorientierte Publikationskultur jenseits von APCs und BPCs ein. Das scholar-led.network-Manifest bringt unsere zentrale Kritik am gegenwärtigen wissenschaftlichen Publikationssystem im deutschsprachigen Raum auf den Punkt und benennt Handlungsfelder für faires, planvolles und vielfältiges Publizieren.
Use of New Features and Add-Ons in Powerpoint to Creat Animations That Stimulate Learning
Creators: name: Armand Florin, Bertea
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: The paper examines the new abilities of MS PowerPoint 2010, as it is and associated with some add-ins, to create animations. Animations were developed for the Environmental protection course, a course usually regarded as challenging by textile chemistry students, and the students have been questioned to determine their opinions concerning computerized simulations and animations. Changes in the students performance as a result of introducing animations and simulations into the Environmental protection course have been analysed.
En ”grafisk imperativ” som sætningsgrænse
Creators: name: Simonsen, Irene
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2020

description: This study is a comparison of L2 Danish, L1 Danish and L1 German use of exclamation marks that seeks to contribute to the didactic basis for teaching German native speakers who study Danish. As part of the rhetorical device exclamation, the exclamation mark in both languages ​​serves to increase intensity in the text and accentuate the writer’s emotional involvement in his text. At the same time, the exclamation mark also influences and affects the recipient of the text. It thus has the function of an interactive sign. However, what other similarities or differences can be observed in the two languages? Based on a comparison of the standards in the two language systems and on speech act theory, the use of the exclamation mark in this study is examined in email and commentary.
description: Akademisk kvarter | Academic Quarter, No. 21 (2020): Sønderjysk genforening 1920/2020
Det fundne og det tabte: To nationer under Gud
Creators: name: Sørensen, Christian Grund
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2020

description: The found and the Lost: Two Nations under God. Kaj Munk and the question of Southern Jutland. The aim of this article is to present and discuss the view of Danish pastor, playwright, author, and resistance martyr Kaj Munk (1898-1944) regarding the reunion of Denmark and Southern Jutland in 1920. In Munk’s view Southern Jutland and the border to Germany is of central importance to the Danish national identity. The population remained culturally Danish under German rule. However, the reunion and the close relationship with Germany was challenged during the rise of the Third Reich, and eventually the occupation of Denmark. Kaj Munk’s nuanced reflections on the cohabitation of neighbouring countries reject demonization and nationalistic superiority thinking. In Munk’s understanding “fronts” and “bridges” are necessary in international cooperation. The front to protect intrinsic values and avoid appropriation, the bridges to bridge divides between the two nations under God. Munk is an example of a peaceful, acknowledging approach to international cohabitation, though with a strong sense of cultural consistency.
description: Akademisk kvarter | Academic Quarter, No. 21 (2020): Sønderjysk genforening 1920/2020
Comparative Study Of Performance Of Wind Wave Model: WAVEWATCH-Modified By New Source Function
Creators: name: Polnikov, Vladislav
name: Innocentini, Valdir
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: G.3
subject: 76F55

description: With the aim of assessing the merits of the new source function proposed earlier in Polnikov (2005),it was tested and validated by means of the modification of the well known model WAVEWATCH-III. Assessment was done on the basis of comparing the wave simulation results found from both models against the buoy data obtained in three oceanic regions: eastern and western parts of the North Atlantic, and the Barenz Sea. First of all, incorporation of the new source function into the numerical codes of WAVEWATCH was done, and this modified version of WAVEWATCH was fitted and tested by standard tests. On the basis of these results some physical conclusions were drawn. Then, sophisticated fitting of the modified model was carried out, using the observation data of 19 buoys obtained in two regions of the North Atlantic for a period of 30 days at 1-hour time intervals. After this, the standard validation of both models was continued on the basis of the 8-month historical data, corresponding to 12 buoys located in the western part of the North Atlantic. Finally, comparative validation of the models was done against the wave observations obtained at one buoy in the Barenz Sea for a period of 3 years at 6-hour time intervals. Estimations of simulation accuracy were carried out for the three parameters of wind waves: significant wave height, Hs , peak wave period, Tp , and mean wave period, Tm. Comparative analysis of these estimations was carried out for the original and modified model WAVEWATCH. The advantage of the modified model was revealed, with an increase of simulation accuracy for Hs by 20 to 50% for more than 70% of the buoys considered. Additionally, it was found that the speed of calculation was increased by 15%. Keywords: wind waves, numerical model, buoy data, fitting of numerical model, verification.
description: 16 pages, 9 Figures, 4 tables
SANITARY CONDITIONS AND HEALTH STATUS OF FEMALE STUDENTS IN NIGERIAN UNIVERSITIES A STUDY OF UNIVERSITY OF NIGERIA, NSUKKA
Creators: name: NNADI, HELEN CHINEDU
name: NNADI, GODWIN ONYEMAECHI
name: NDU, CHIMDINDU CHISOM
Publisher: name: Zenodo
Year: 2025
Subjects: Sanitation, Hostel Sanitation Practices, Health Status, Female Undergraduate, Universities, Hostel Workers.

description: Abstract

This research work embarked upon in ascertaining the sanitary conditions of female student hostels and way to improve their health status using University of Nigeria Nsukka as area of study. A sample survey design was applied for the study. Systematic random method, purposive and availability sampling were used to select 263 students. An ordered questionnaire served for collection of data. Quantitative method of analysis was adopted to ascertain the sanitary conditions affecting students’ health status. Explanatory statistics such as frequency and percentage was employed for the data presentation and analysis while chi-square statistics was used for testing of hypotheses. Results from the research indicates that the sanitary conditions in hostels are bad, and it affects the students’ health status in a negative way; the factors that promote bad sanitary conditions of the hostel were the non-challant attitude of hostel cleaners towards the maintenance of sanitary facilities, inadequate number of toilets and bathrooms for the students, over population of students in the hostel and lack of maintenance of facilities. The negative effects of poor sanitation condition on the health statuses of students make them sick and unable to study, and make the environment smelly and unconducive   for learning. The study therefore recommends that the school management should provide adequate facilities that will enable their workers or cleaners to do their work effectively, the school management should make a policy that will guide the hostel based on sanitation and fumigating the hostel environment.
Total reaction cross sections from elastic alpha-nucleus scattering angular distributions around the Coulomb barrier
Creators: name: Mohr, P.
name: Galaviz, D.
name: Fülöp, Zs.
name: Gyürky, Gy.
name: Kiss, G. G.
name: Somorjai, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The total reaction cross section $σ_{\rm{reac}}$ is a valuable measure for the prediction of $α$-induced reaction cross sections within the statistical model and for the comparison of scattering of tightly bound projectiles to weakly bound and exotic projectiles. Here we provide the total reaction cross sections $σ_{\rm{reac}}$ derived from our previously published angular distributions of $α$-elastic scattering on $^{89}$Y, $^{92}$Mo, $^{112,124}$Sn, and $^{144}$Sm at energies around the Coulomb barrier.
description: 4 pages, 2 figures, Phys. Rev. C, accepted as Brief Report
On-Line Assessment for computer Aided Design in Knitting
Creators: name: Mirela,Blaga; Ana Ramona, Ciobanu; Dorin, Dan
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: Knitted products hold tremendous potential for providing innovative design solutions for aesthetic and performance challenges in applications such as fashion, medical, geotextiles, military, industrial. Computer Aided Design is a preparatory stage of the patterns, aimed to design the knitting programs in a specific language, readable by the machine. An assessment stage of the knowledge acquired is necessary, in order to indicate the level of the activity deep understanding. The paper presents a set of on-line tests concerning the self-assessment of computer aided design knowledge and pattern design activity.
Den uforløste hjemve
Creators: name: Hoeck, Jonas M.
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2020

description: Since the romantic era, man’s relationship with nature has been connected with strong emotions and ideas, and not all kinds of landscapes are therefore considered equally pretty or nice today. Through an ecocritical reading of the North German author Theodor Storm’s novella the The Rider on the White Horse (Der Schimmelreiter) (1888), this article illustrates why the North Frisian and Danish marshlands have been depicted as an uncanny (unheimliche) place in modern culture, and why this peripheral nature never became an integral part of what we today consider as the Danish landscape.
description: Akademisk kvarter | Academic Quarter, No. 21 (2020): Sønderjysk genforening 1920/2020
Grænseland og grænseerfaringer i Gynther Hansens forfatterskab
Creators: name: Frandsen, Johannes Nørregaard
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2020

description: This article presents the authorship of the Southern Jutland author Gynther Hansen (1930-2014). It contains analysis of themes and motifs in his novels and short stories that depict contradictions between Danish and German values ​​and attitudes in the years before, during and after World War II. Gynther Hansen was himself born and raised in the small town of Varnæs near to Aabenraa and in a German-minded family that was further influenced by Nazism. Gynther Hansen himself chose to become Danish at the end of the war. His authorship illuminates everywhere this choice between the Danish and the German for people in the border country and it illustrates the price you have to pay choosing one side. He portrays people, especially men, who feel themselves wounded in soul and heart and who feel deprived of dignity and sense of belonging. The authorship includes around 40 novels and volumes of short stories and has an artistic significance for understanding relationships between experiences in the border country and existential conflicts.
description: Akademisk kvarter | Academic Quarter, No. 21 (2020): Sønderjysk genforening 1920/2020
Optical multiband surface photometry of a sample of Seyfert galaxies. III. Global, isophotal, and bar parameters
Creators: name: Slavcheva-Mihova, L.
name: Mihov, B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This paper is third in a series, studying the optical properties of a sample of Seyfert galaxies. Here we present a homogeneous set of global (ellipticity, position angle, inclination, and total magnitude) and isophotal (semi-major axis and colour indices at 24 V mag/sq.arcsec) parameters of the galaxy sample. We find the following median corrected isophotal colour indices: B-Ic = 1.9 mag/sq.arcsec and V-Ic = 1.1 mag/sq.arcsec. A set of bar parameters - ellipticity, position angle, semi-major axis corresponding to the ellipticity maximum in the bar region, and length, are also reported; deprojection has been applied to the bar ellipticity, length, and relative length in terms of galaxy isophotal semi-major axis. Regarding bar length estimation, we use a method, based on the relation between the behaviour of the profiles and orbit analysis. The so estimated bar length tightly correlates with the semi-major axis, corresponding to the ellipticity maximum with a median ratio of the former to the latter of 1.22. The median of the deprojected bar ellipticity, length, and relative length are 0.39, 5.44 kpc, and 0.44, respectively. There is a correlation between the deprojected bar length and the corrected isophotal semi-major axis at 24 V mag/sq.arcsec. Three of the 17 large-scale bars appear strong, based on the deprojected bar ellipticity as a first-order approximation of bar strength. The deprojected relative bar length does not appear to correlate with the bar ellipticity.
description: AN, in press
E-Learning and Immersive Learning in Military Education
Creators: name: Gheorghe, Calopareanu
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: An e-learning system is a model that integrates new information and communication technologies in an educational and training proccess which is based upon pedagogical principles and current didactic approaches as well as on European standards. Immersive Learning is a modern technique of knowledge delivery used to simulate the reality of critical incident management. According to it, students are immersed in a realistic environment in which they can experience the decision-making process and understand the complex problems involved with it.The integration of the current military e-learning system in the Media Grid Immersive Education initiative would inevitably lead to high level performance of the education system.
Flow Equation Calculation of Transient and Steady State Currents in the Anderson Impurity Model
Creators: name: Wang, Pei
name: Kehrein, Stefan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Transient and steady state currents through dc-biased quantum impurity models beyond the linear response regime are of considerable interest, both from an experimental and a theoretical point of view. Here we present a new analytical approach for the calculation of such currents based on the flow equation method (method of infinitesimal unitary transformations). Specifically, we analyze the Anderson impurity model in its mixed valence regime where the coupling to the leads is switched on suddenly at time $t=0$. We observe the real time buildup of the current until it reaches its steady state limit.
description: 9 pages, 4 figures
E-Content. Learning by doing
Creators: name: Maria, Canter
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: This paper aims, as a starting point for future research on a group of students from different specializations attending the Computer Assisted Instruction course at Lucian Blaga University in Sibiu, Romania, to connect personalization in e-learning with the design and implementation of the econtent, using free and open source software, in order to improve the quality of learning. This research is all the more important as the students who attend this course are training to become teachers, so they must be aware of the importance of personalizing the learning process.
Input Design for System Identification via Convex Relaxation
Creators: name: Manchester, Ian R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper proposes a new framework for the optimization of excitation inputs for system identification. The optimization problem considered is to maximize a reduced Fisher information matrix in any of the classical D-, E-, or A-optimal senses. In contrast to the majority of published work on this topic, we consider the problem in the time domain and subject to constraints on the amplitude of the input signal. This optimization problem is nonconvex. The main result of the paper is a convex relaxation that gives an upper bound accurate to within $2/π$ of the true maximum. A randomized algorithm is presented for finding a feasible solution which, in a certain sense is expected to be at least $2/π$ as informative as the globally optimal input signal. In the case of a single constraint on input power, the proposed approach recovers the true global optimum exactly. Extensions to situations with both power and amplitude constraints on both inputs and outputs are given. A simple simulation example illustrates the technique.
description: Preprint submitted for journal publication, extended version of a paper at 2010 IEEE Conference on Decision and Control
Conceptualization of research themes and directions in business ecosystem strategies: a systematic literature review
Creators: name: Krome, Maximilian Julius
name: Pidun, Ulrich
Publisher: name: Springer Science and Business Media LLC
Year: 2022
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::650 Management, Öffentlichkeitsarbeit::650 Management und unterstützende Tätigkeiten
subject: business ecosystem strategy
subject: platform strategy
subject: ecosystem competition
subject: competitive dynamics
subject: competitive strategy
subject: systematic literature review
subject: strategic framework
subject: research directions

description: Motivated by the rapid advancements in the field of business ecosystems (BEs), this paper presents a holistic overview of existing research in the field of business ecosystem strategy. As scholars have noted, BE strategy poses new challenges and diverges from traditional thinking in multiple ways. Researchers have investigated parts of strategy in that regard; however, a holistic approach to BE strategy does not exist. To this end, this study relies on a systematic literature review approach and analyzes contributions from across disciplines in an attempt to derive a holistic ecosystem strategy framework. The study identifies six main elements that reflect strategic considerations along subsequent stages of decision-making. It then discusses the fifteen sub-streams identified in the literature, placing them in their strategic context. Based on this analysis, gaps in the literature and future research opportunities are identified. This study is motivated by the aspiration to make the topic of ecosystem strategies more accessible for scholars and practitioners, while enabling a broader discussion based on the current state of research.
The fuel transportation system in British Columbia : attributes and vulnerabilities
Creators: name: Brown, Allanah
Publisher: name: University of British Columbia
Year: 2016

description: Disasters can, and do lead to widespread disruption, often crippling transportation systems in complex ways. Transportation systems need to be designed not only to operate on an ordinary day; they need to be designed to respond to man-made and natural disasters. Proactive planning can allow transport to resume service, and deal with crises, as quickly as possible post-disaster. This thesis provides information to assist in the development of plans and protocols for emergency scenarios. Coastal communities throughout British Columbia (BC) are heavily dependent on maritime transportation for the supply of fuel, food, and other critical resources. Vancouver Island only has an estimated 3 days’ worth of food and fuel stored on the island. Without sufficient storage, or a means of producing these resources, coastal communities are highly vulnerable to maritime disruption. If transportation systems are disrupted for an extended period, communities can experience shortages to supply. This can lead to communities losing power, operations, and critical resources for survival. Through interviews and interactive workshops with industry stakeholders, this study brings forth issues and limitations within fuel transportation in BC. Current transportation systems are potentially ill equipped to deal with large-scale events with some response plans fragmented, and the decision-making infrastructure at times ad hoc. Improving a system’s preparedness through identification of hazards, and educating the industry could significantly aid the system’s response and revitalization post-disaster. Through review of current systems and plans, this thesis highlights persistent concerns within the system and begins to explore ways to improve the resilience of fuel distribution in BC. Through analyzing mitigation options, the validity of pro-active planning can be seen. The concerns and recommendations from this thesis could lay the foundation for building a more resilient system capable of executing effective emergency response.
Ti interviews i anledning af 100-året for Genforeningen
Creators: name: Burhmann, Peter
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2020

description: The author interviewed ten persons from the Danish-German borderland as a prelude to the celebration of the centennial marking the return of North Schleswig to Denmark in 1920. The interviewees come from different walks of life and are members of the Danish majority and German minority populations north of the Danish-German border. The interviews were designed as small-scale investigations into the mental, national and cultural mind-sets, one hundred years after the division of Schleswig in 1920. The interviews were published in the German language newspaper “Der Nordschleswiger” in Denmark in the first half of 2019. The author finds that the question of national, cultural and lingual identity is much more diverse and fluent than outside the region. This is caused not only by several centuries of reciprocal influence of German on Danish and vice versa, but also by the existence of Danish and German minorities north (and south) of the Danish-German border.
description: Akademisk kvarter | Academic Quarter, No. 21 (2020): Sønderjysk genforening 1920/2020
Micromorphic theory as a model for blood in the microcirculation: correction and analysis
Creators: name: Massing, Florian
name: Glane, Sebastian
name: Müller, Wolfgang H.
name: Eremeyev, Victor A.
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: micromorphic
subject: fluid
subject: hemodynamics
subject: continuum mechanics
subject: blood

description: This paper analyzes the applicability of Eringen’s Generalized Continuum Theories as a model for human blood in the microcirculation. The applied theory considers a fluid with a fully deformable substructure, namely a micromorphic fluid. This analysis is motivated by the fact that blood itself can be considered a suspension of deformable particles, i.e., red blood cells (RBCs), suspended in a Newtonian fluid, i.e., blood plasma. As a consequence, non-Newtonian phenomena such as shear-thinning are observed in blood. To test the micromorphic fluid as a model for blood, the solution for the velocity and the motion of substructure is determined for a cylindrical pipe flow and compared to experimental results of blood flow through narrow glass capillaries representing idealized blood vessels. A similar analysis was also conducted by Kang and Eringen in 1976, but it contains some misprints and minor errors regarding the mathematical expressions and subsequent discussion which are corrected in this paper. For certain material parameters, the micromorphic fluid models capture high-shear blood flow in narrow glass capillaries very well. This concerns both the velocity profiles and the shear-thinning behavior. Furthermore, a parameter study reveals that the flexibility of substructure governs the micromorphic shear-thinning. In this regard, parallels can be drawn to the shear-thinning of human blood, which is also induced by the deformability of RBCs. This makes the micromorphic fluid a complex but accurate model for human blood, at least for the considered experiments.
Nonperturbative calculation of the anomalous magnetic moment in the Yukawa model within truncated Fock space
Creators: name: Karmanov, V. A.
name: Mathiot, J. -F.
name: Smirnov, A. V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the covariant formulation of light-front dynamics, we calculate the state vector of a physical fermion in the Yukawa model. The state vector is decomposed in Fock sectors and we consider the first three ones: the single constituent fermion, the constituent fermion coupled to one scalar boson, and the constituent fermion coupled to two scalar bosons. This last three-body sector generates nontrivial and nonperturbative contributions to the state vector, which are calculated numerically. Field-theoretical divergences are regularized using Pauli-Villars fermion and boson fields. Physical observables can be unambiguously deduced using a systematic renormalization scheme we have developed previously. As a first application, we consider the anomalous magnetic moment of the physical fermion.
description: 24 pages, 16 figures
Ophrys ×garganensis R. Soca, hyb nat nov.
Creators: name: Romieg Soca, Romieg
Publisher: name: Zenodo
Year: 1997
Subjects: Ophrys

description: Soca R., 1997. Ophrys ×garganensis R. Soca, hyb nat nov. Caesiana 9: 48-50.
Viene presentato un nuovo ibrido naturale tra Ophrys archipelagi e Ophrys biscutella (Ophrys ×garganensis) rinvenuto sul promontorio del Gargano.
Fast ray-tracing algorithm for circumstellar structures (FRACS) I. Algorithm description and parameter-space study for mid-IR interferometry of B[e] stars
Creators: name: Niccolini, Gilles
name: Bendjoya, Philippe
name: De Souza, Armando Domiciano
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The physical interpretation of spectro-interferometric data is strongly model-dependent. On one hand, models involving elaborate radiative transfer solvers are too time consuming in general to perform an automatic fitting procedure and derive astrophysical quantities and their related errors. On the other hand, using simple geometrical models does not give sufficient insights into the physics of the object. We propose to stand in between these two extreme approaches by using a physical but still simple parameterised model for the object under consideration. Based on this philosophy, we developed a numerical tool optimised for mid-infrared (mid-IR) interferometry, the fast ray-tracing algorithm for circumstellar structures (FRACS) which can be used as a stand-alone model, or as an aid for a more advanced physical description or even for elaborating observation strategies. FRACS is based on the ray-tracing technique without scattering, but supplemented with the use of quadtree meshes and the full symmetries of the axisymmetrical problem to significantly decrease the necessary computing time to obtain e.g. monochromatic images and visibilities. We applied FRACS in a theoretical study of the dusty circumstellar environments (CSEs) of B[e] supergiants (sgB[e]) in order to determine which information (physical parameters) can be retrieved from present mid-IR interferometry (flux and visibility). From a set of selected dusty CSE models typical of sgB[e] stars we show that together with the geometrical parameters (position angle, inclination, inner radius), the temperature structure (inner dust temperature and gradient) can be well constrained by the mid-IR data alone. Our results also indicate that the determination of the parameters characterising the CSE density structure is more challenging but, in some cases, upper limits as well as correlations on the parameters characterising the mass loss can be obtained. Good constraints for the sgB[e] central continuum emission (central star and inner gas emissions) can be obtained whenever its contribution to the total mid-IR flux is only as high as a few percents. Ray-tracing parameterised models such as FRACS are thus well adapted to prepare and/or interpret long wavelengths (from mid-IR to radio) observations at present (e.g. VLTI/MIDI) and near-future (e.g. VLTI/MATISSE, ALMA) interferometers.
pigeon_si.pdf from Coordinating directional switches in pigeon flocks: the role of nonlinear interactions
Creators: name: Chen, Duxin
name: Sun, Yongzheng
name: Shao, Guanbo
name: Yu, Wenwu
name: Zhang, Hai-Tao
name: Lin, Wei
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Biophysics
subject: 80201 Analysis of Algorithms and Complexity
subject: FOS: Computer and information sciences

description: The mechanisms inducing unpredictably directional switches in collective and moving biological entities are largely unclear. Deeply understanding such mechanisms is beneficial to delicate design of biologically inspired devices with particular functions. Here, articulating a framework that integrates data-driven, analytical and numerical methods, we investigate the underlying mechanism governing the coordinated rotational flight of pigeon flocks with unpredictably directional switches. Particularly using the sparse Bayesian learning method, we extract the inter-agent interactional dynamics from the high-resolution GPS data of three pigeon flocks, which reveals that the decision-making process in the rotational switching flight performs in a more nonlinear manner than in the smooth coordinated flight. To elaborate the principle of this nonlinearity of interactions, we establish a data-driven particle model with two potential wells and estimate the mean switching time of rotational direction. Our model with its analytical and numerical results renders the directional switches of moving biological group more interpretable and predictable. Actually, an appropriate combination of natures, including high density, stronger nonlinearity in interactions, and moderate strength of noise, can enhance such highly ordered, less frequent switches.
National og regional dansk identitet i Sønderjylland
Creators: name: Crone, Katrine
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2020

description: The demarcation between Denmark and Germany in 1920 stands as one of the greatest historical events in Denmark. This was evident in the Danish newspapers from Southern Jutland, Hejmdal, and Flensborg Avis, in which different narratives concerning Danish national identity were constructed in 1920. This article focuses on the main features of these narratives and examines how they seemed significant and identity-making for the Danish people of Southern Jutland. Furthermore, this article aims to clarify how and why these narratives played an important role in 1933 when the border from 1920 came under pressure by the German minority. With the new demarcation in 1920, one might presume that this would foster a more standardised national narrative in the Danish newspapers. However, a significant regional narrative rooted in a regional identity was constructed as well. In 1933 this regional identity remained important when the border was threatened by the German minority’s revision claim.
description: Akademisk kvarter | Academic Quarter, No. 21 (2020): Sønderjysk genforening 1920/2020
Entwicklung und Charakterisierung von Siliziumnitrid-/Siliziumkarbidkompositen für den Einsatz in tribologisch hochbeanspruchten Gleitsystemen
Creators: name: Zielonka, Paul S.
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023
Subjects: Siliziumnitrid
Siliziumkarbid
technische Keramik
keramische Prozesstechnik
Tribologie
silicon nitride
silicon carbide
technical ceramics
ceramic process technology
tribology

description: Im Rahmen dieser Arbeit werden Siliziumnitrid–/Siliziumkarbidkompositwerkstoffe für tribologisch hochbeanspruchte Anwendungen entwickelt und charakterisiert. Bei der Charakterisierung der Kompositwerkstoffe wird der Zusammenhang zwischen dem Siliziumkarbidgehalt und der entstehenden Mikrostruktur sowie den mechanischen Eigenschaften dargestellt. Tribologisch wurden die Werkstoffe in Modellversuchen untersucht. Dabei zeigten sie ein sehr gutes Reib- und Verschleißverhalten.
Additional file 2 of Content validation of a new measure of patient-reported barriers to antiretroviral therapy adherence, the I-Score: results from a Delphi study
Creators: name: Engler, Kim
name: Vicente, Serge
name: Mate, Kedar K. V.
name: Lessard, David
name: Ahmed, Sara
name: Lebouché, Bertrand
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 2. Item clarity ratings of PLHIV and providers.
Weniger ist mehr: Fusion von Radar- und Kommunikationssystemen
Creators: name: Braun, Martin
Publisher: name: Karlsruhe
Year: 2009

description: Radar und Kommunikation sind fur die Verkehrssicherheit sehr nutzliche Hilfsmittel. Es wird ein Projekt vorgestellt, in welchem die Fusion der beiden Systeme untersucht wird. Anhand von verwandten Forschungsprojekten wird gezeigt, wie durch Ausnutzen von Synergieeffekten die einzelnen Komponenten sogar verbessert werden können.
Comparing the Outage Capacity of Transmit Diversity and Incremental Relaying
Creators: name: Renk, Tobias
name: Jäkel, Holger
name: Jondral, Friedrich K.
name: Gündüz, Deniz
name: Goldsmith, Andrea
Publisher: name: Karlsruhe
Year: 2009

description: We present the e-outage capacity of incremental relaying at low signal-to-noise ratios (SNR) in a wireless cooperative network with slow Rayleigh fading channels. The relay performs decode-and-forward and repetition coding is employed in the network, which is optimal in the low SNR regime. We derive an expression on the optimal relay location that maximizes the e-outage capacity. It is shown that this location is independent of the outage probability and SNR but only depends on the channel conditions represented by a path-loss factor. We compare our results to the e-outage capacity of the cut-set bound and demonstrate that the ratio between the e-outage capacity of incremental relaying and the cut-set bound lies within 1/wurzel2 and 1. Furthermore, we derive lower bounds on the e-outage capacity for the case of K relays.
title: Coordinated Motion Planning and Optimal Force Distribution for Robots with Multiple Cooperating Arms
Creators: name: Bruhm, Hartmut
Publisher: name: IFAC - International Federation of Automatic Control
Year: 2023

description: This paper is concerned with the problems of inter-arm coordination which arise when multiple robot arms attach their end effectors to a single payload in order to perform a manipulation task. The approach taken is to let the arms cooperate with equal rights, and to exploit the redundancy present in the system for the minimization of a quadratic cost criterion. The main elements of the proposed control system are generators for coordinated nominal motions and force/torque interactions with the payload, and an active compliance scheme capable of resolving kinematic conflicts and inconsistencies between motion and force/torque commands. The paper gives a detailed mathematical description of both the motion and the force/torque generators. The proposed active compliance scheme is presented in summary form.
Yttria-Doped Zirconia as Solid Electrolyte for Fuel-Cell Applications
Creators: name: Butz, Benjamin
Publisher: name: Karlsruhe
Year: 2009
Subjects: yttria-stabilized zirconia
degradation of ionic conductivity
analytical

description: 7.3-10 mol% yttria-doped zirconia (YDZ) was studied with emphasis on its long-term stability as solid electrolyte. The decomposition of common 8.5YDZ (950 °C) was detected by analytical TEM. As second issue, the microstructural and chemical properties of nanocrystalline 7.3YDZ thin films were investigated. Metastable t''-YDZ was found to precipitate in nanoscaled regions in YDZ up to 10 mol% yttria. Furthermore, a revised boundary of the c+t phase field, in which YDZ decomposes, is presented.
A Novel Combining Receiver for a Dual-Diversity Wireless Relay Network
Creators: name: Renk, Tobias
name: Jäkel, Holger
name: Braun, Martin
name: Jondral, Friedrich K.
Publisher: name: Karlsruhe
Year: 2009

description: We present a simple combining receiver for a dual-diversity wireless relay network. The main concern of the paper is to face the trade-off between performance and complexity. The receiver focuses on signal-to-noise ratio (SNR) monitoring and selects dynamically between selection combining (SC) and equal gain combining (EGC) depending on the SNR ratio of the two received branches. It is shown that SC suffers no SNR degradation compared to a single branch communications system if the two receive branches are unbalanced, wheres EGC suffers a loss of 3 dB. Error performance with respect to branch unbalance is considered as well and limiting values for a high degree of branch unbalance are derived.
Parametrization of Joint OFDM-based Radar and Communication Systems for Vehicular Applications
Creators: name: Braun, Martin
name: Sturm, Christian
name: Niethammer, Andreas
name: Jondral, Friedrich K.
Publisher: name: Karlsruhe
Year: 2009

description: The design process of a joint radar and communication system employing OFDM is analyzed. In particular, the question on how to choose OFDM modulation parameters such as carrier distance, guard interval length, frame length or pilot design is studied. Such systems use the same OFDM frames to transmit data and image the surroundings, so both radar and communication are affected by the choice of these parameters. The main design criteria for the radar component are accuracy of distance and speed measurements, whereas the communication subsystem needs to be designed such that it transmits robustly through a mobile communication channel. As these design criteria often are antipodal, arguments for choosing a particular set of modulation parameters are discussed. The presented design process is applied to the case of a vehicular (car-to-car) communication, in which moving participants communicate in the 24 GHz range.
Artificial Lighting Interference on Free Space Photoelectric Systems
Creators: name: Hauske, Maximilian
name: Shi, Dayong
name: Ihle, Marc
name: Jondral, Friedrich K.
Publisher: name: Karlsruhe
Year: 2009

description: Artificial lighting is a main source of interference on free space photoelectric systems for communication applications. This work presents digital measurements and numerical analysis of the time and frequency characteristics of artificial lighting interference using Welch Power Spectral Density estimate and spectrogram with Short Time Fourier Transform. Measurements of time waveforms and spectra of incandescent lamps, tubular and compact fluorescent lamps with conventional and electronic ballasts, as well as Light Emitting Diodes are discussed and compared to other works.
Additional file 1 of Burden of hyperphagia and obesity in Bardet–Biedl syndrome: a multicountry survey
Creators: name: Forsythe, Elizabeth
name: Mallya, Usha G.
name: Yang, Min
name: Huber, Caroline
name: Cala, Mary Lynn
name: Greatsinger, Alexandra
name: Hagopian, Ella
name: Pomeroy, Jeremy
name: Haqq, Andrea M.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: Additional file 1. Supplementary Methods: Additional Survey Questions on the Impacts of Hyperphagia and Obesity Due to BBS. Supplementary Table 1. Symptoms and Impact of Hyperphagia in Patients With Bardet-Biedl Syndrome Aged <18 Years With Overweight or Obesity.
Tear exosomes: A messenger of clinical health complication
Creators: name: Mirgh, Divya
name: Gorai, Sukhamoy
name: Thorat, Nanasaheb
name: Anand, Krishnan
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 5103
subject: Classical physics
classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Tear is a promising biological material for biomarker research because they are easy to collect, are connected to the central nervous system and act as a mediator between the cerebrospinal fluid and serum. The presence of proteins in tears that are also present in cerebrospinal fluid enhances their potential for non-invasive early detection of neurological disorders and offers valuable insights into one’s overall physical well-being.
Biogeochemical characterization of the hyporheic zone below the Fraser River near Vancouver, British Columbia
Creators: name: Zima, Michael K.
Publisher: name: University of British Columbia
Year: 2016

description: The aim of this thesis is to characterize the biogeochemical conditions in the hyporheic zone of the Fraser River in order to help assess the fate of creosote-derived contaminants in groundwater. By investigating hyporheic biogeochemistry, a framework is established for further studies which could quantitatively assess the potential for monitored natural attenuation as a remedial option for groundwater contamination. At our site on the North Arm of the Fraser, groundwater flows horizontally towards the river at a velocity of 0.1 to 0.2 m/day. Transverse mixing between fresh groundwater and underlying saline groundwater is believed to be responsible for cation exchange reactions. From intertidal monitoring wells out to the hyporheic zone (HZ), Fe and Mn concentrations are found to increase despite dilution, and this is believed to be a result of either cation exchange, or oxidation of organic matter (OM), H₂S, or CH₄. As groundwater reaches the river, it turns upward and discharges into the HZ. In the river channel, fresh groundwater discharges to the HZ at distances between 70 and 85 m from the shoreline’s high-water mark (HWM), while the deeper, saline groundwater discharges at distances greater than 100 m. A custom-made cryogenic probe was designed to collect representative, high-quality sediment samples from the HZ. A vertical characterization of biogeochemistry is presented. Chloride is used as a conservative tracer to determine a dilution factor of 170 in the top 85 cm of sediment, but dilution is believed to persist beyond this depth. DNA sequencing results infer a large variety of geochemical processes. Since multiple known aerobic microorganisms are found to have highest proportional abundances in the top 30 cm of the HZ, this depth range is considered to represent the portion of the HZ which is continually exposed to significant amounts of oxygen from the river. Porewater geochemistry also supports this delineation, as Fe(II) is non-detectable above the depth of 30 cm. The estimation of residence time in the HZ, the delineation of the aerobic portion of the HZ, and the characterization of dilution rates provide valuable information on the biogeochemical and physical components of natural attenuation in the HZ.
Determination and expression analysis of functional genes in Lactobacillus plantarum
Creators: name: Cho, Gyu-Sung
Publisher: name: Karlsruhe
Year: 2010
Subjects: Lactobacillus plantarum
Functional genes
expression
realtime PCR
bacteriocin

description: In this study, the bacteriocin production of two Lactobacillus plantarum strains was investigated and their effectiveness as protective cultures for the biopreservation of turkey meat was assessed. Especially, the genetic loci for bacteriocin production of Lactobacillus plantarum strains BFE 5092 and PCS20 were completely analysed and the protective Lactobacillus plantarum BFE 5092 grew and produced bacteriocin at 8 or 10°C as well as during sessile growth on turkey meat.
Productivity and Erodibility of U.S. Cropland
Creators: name: Heimlich, Ralph E.
name: Heimlich, Ralph E.
Publisher: name: Unknown
Year: 1989
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Land Economics/Use
subject: Production Economics
subject: Soil productivity
subject: soil erodibility
subject: soil erosion policy
subject: U.S. cropland
subject: land capability classification
subject: prime farmland definition

description: Soil erosion policy aiming to remove highly erodible land from production to reduce soil erosion may be dealing with some of the most productive and valuable U.S. cropland. If so, greater incentives for farmers to retire that land may be needed. The land capability classification system and USDA's prime farmland definition, used to measure the suitability of land for agricultural uses, do not provide enough information for decisions on whether highly erodible soils are less or more productive than less erodible soils. As a result, some highly erodible lands that are also highly productive may have higher opportunity costs than commonly thought and thus may need greater incentives for retirement. Opportunity costs measure the earning power of an input, soil in this case, in its best alternative use.