cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Incipient antiferromagnetism in the Eu-doped topological insulator Bi$_2$Te$_3$
Creators: name: Tcakaev, Abdul
name: Zabolotnyy, Volodymyr B.
name: Fornari, Celso I.
name: Rüßmann, Philipp
name: Peixoto, Thiago R. F.
name: Stier, Fabian
name: Dettbarn, Michael
name: Kagerer, Philipp
name: Weschke, Eugen
name: Schierle, Enrico
name: Bencok, Peter
name: Rappl, Paulo H. O.
name: Abramof, Eduardo
name: Bentmann, Hendrik
name: Goering, Eberhard
name: Reinert, Friedrich
name: Hinkov, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Rare earth ions typically exhibit larger magnetic moments than transition metal ions and thus promise the opening of a wider exchange gap in the Dirac surface states of topological insulators. Yet, in a recent photoemission study of Eu-doped Bi$_2$Te$_3$ films, the spectra remained gapless down to $T = 20\;\text{K}$. Here, we scrutinize whether the conditions for a substantial gap formation in this system are present by combining spectroscopic and bulk characterization methods with theoretical calculations. For all studied Eu doping concentrations, our atomic multiplet analysis of the $M_{4,5}$ x-ray absorption and magnetic circular dichroism spectra reveals a Eu$^{2+}$ valence and confirms a large magnetic moment, consistent with a $4f^7 \; {^8}S_{7/2}$ ground state. At temperatures below $10\;\text{K}$, bulk magnetometry indicates the onset of antiferromagnetic (AFM) ordering. This is in good agreement with density functional theory, which predicts AFM interactions between the Eu impurities. Our results support the notion that antiferromagnetism can coexist with topological surface states in rare-earth doped Bi$_2$Te$_3$ and call for spectroscopic studies in the kelvin range to look for novel quantum phenomena such as the quantum anomalous Hall effect.
description: 15 pages, 9 figures
Clients’ self-reports of harmful psychotherapeutic experiences
Creators: name: Kane, Josie Monica
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this exploratory study is to investigate the experiences of clients who sought psychotherapeutic help and perceived aspects of the therapy to be harmful. This study used a survey design. Fifty-two participants were recruited through advertisements in the media and sent a questionnaire. The results from the questionnaires were analyzed using descriptive statistics. Responses to the open-ended questions were studied for themes regarding harm. The results show that respondents reported perceiving negative therapist characteristics such as hostility and rudeness; a lack of positive therapist characteristics such as understanding feelings and what was said, being respectful and supportive; and negative therapist behaviors such labelling, having different goals, saying or doing something that decreased respondent's self-esteem. The results from this study suggest that boundary violations considered unethical are perceived as occurring and are being experienced as harmful or unhelpful by the clients. That less than 10 % of the respondents in this study reported experiences of sexual boundary violations, yet were motivated to share their concerns in this study clearly implies that other kinds of interventions fall under client's definitions of harmful psychotherapy. This study underscores the need for continued research in this area; and encourages efforts to be undertaken to help clients who have been harmed.
Probing Anomalous Longitudinal Fluctuations of the Interacting Bose Gas via Bose-Einstein Condensation of Magnons
Creators: name: Kreisel, Andreas
name: Hasselmann, Nils
name: Kopietz, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The emergence of a finite staggered magnetization in quantum Heisenberg antiferromagnets subject to a uniform magnetic field can be viewed as Bose-Einstein condensation of magnons. Using non-perturbative results for the infrared behavior of the interacting Bose gas, we present exact results for the staggered spin-spin correlation functions of quantum antiferromagnets in a magnetic field at zero temperature. In particular, we show that in dimensions 1 < D <= 3 the longitudinal dynamic structure factor S_parallel(q,omega) describing staggered spin fluctuations in the direction of the staggered magnetization exhibits a critical continuum whose weight can be controlled experimentally by varying the magnetic field.
description: 4 pages, 1 figure, revised version. To appear in Physical Review Letters
The quantum efficiency and diffractive image artifacts of Si:As IBC mid-IR detector arrays at 5 $-$ 10 $μ$m: Implications for the JWST/MIRI detectors
Creators: name: Gaspar, Andras
name: Rieke, George H.
name: Guillard, Pierre
name: Dicken, Daniel
name: Alberts, Stacey
name: Morrison, Jane
name: Ressler, Michael E.
name: Argyriou, Ioannis
name: Glasse, Alistair
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Arsenic doped back illuminated blocked impurity band (BIBIB) silicon detectors have advanced near and mid-IR astronomy for over thirty years; they have high quantum efficiency (QE), especially at wavelengths longer than 10 $μ$m, and a large spectral range. Their radiation hardness is also an asset for space based instruments. Three examples of Si:As BIBIB arrays are used in the Mid-InfraRed Instrument (MIRI) of the James Webb Space Telescope (JWST), observing between 5 and 28 $μ$m. In this paper, we analyze the parameters leading to high quantum efficiency (up to $\sim$ 60\%) for the MIRI devices between 5 and 10 $μ$m. We also model the cross-shaped artifact that was first noticed in the 5.7 and 7.8 $μ$m Spitzer/IRAC images and has since also been imaged at shorter wavelength ($\le 10~μ$m) laboratory tests of the MIRI detectors. The artifact is a result of internal reflective diffraction off the pixel-defining metallic contacts to the readout detector circuit. The low absorption in the arrays at the shorter wavelengths enables photons diffracted to wide angles to cross the detectors and substrates multiple times. This is related to similar behavior in other back illuminated solid-state detectors with poor absorption, such as conventional CCDs operating near 1 $μ$m. We investigate the properties of the artifact and its dependence on the detector architecture with a quantum-electrodynamic (QED) model of the probabilities of various photon paths. Knowledge of the artifact properties will be especially important for observations with the MIRI LRS and MRS spectroscopic modes.
description: 17 pages, 15 figures, accepted for publication in PASP
Quartett No. II in E dur für Pianoforte, Violine, Bratsche und Cello : Op. 117
Creators: name: Huber, Hans
Publisher: name: Hug
Year: 1901

description: III. Instrumentalmusik. 4. Quartette
description: Titelblatt mit Lithografie von Fr. Widmann. Auf S. [3] Widmung "Fräulein Mathilde Schwarzenbach zugeeignet"
description: [komponiert 1901]
Stable and low-spurious laser source for fast addressing multiple optical qubits spread over a 100 GHz bandwidth
Creators: name: Welinski, Sacha
name: Ulrich, Lothaire
name: Berger, Perrine
name: Loic Morvan
Publisher: name: Zenodo
Year: 2021

description: Optical manipulation of photonic solid-state qubits such as rare-earth ions in single crystals need stable laser sources able to perform complex and high bandwidth excitation waveforms (adiabatic pulses, STIRAP, HSH pulses) [1,2]. Such waveforms can be generated using an acoustic-optical modulators (AOM) connected to an Arbitrary Waveform Generator (AWG) [4]. However, the limited bandwidth of AOMs sets a severe limitation in the bandwidth and frequency agility, typically a few MHz. Using an electro-optical modulator (EOM) such as a phase or an intensity modulator made of LiNbO3 make it possible to access to higher bandwidth, but it generates unwanted harmonics that can perturb the experiment, reducing the fidelity and/or the efficiency of the protocol [4]. There is currently no architecture able to give enough versatility and stability to perform parallel multiple qubit gates operations over a few GHz range.
 Here we develop a laser source that is able to deliver high-bandwidth optical signals at multiple frequencies over a span of 10 GHz (scalable to 100 GHz), with low optical and RF phase and intensity noise. The central wavelengths can be tuned to match the resonance of the different species of optical qubit (in our case Eu3+, or Er3+ ions in solid-state matrices). The architecture is based on the combination of multiple fixed-frequency laser sources at 1.5 μm. Each laser is externally modulated with a LiNbO3 IQ optical modulator and goes through a narrow optical filters to obtain the required performances in terms of arbitrary pulse shaping, signal-to-noise ratio and spurious suppression. After the optical signal combination, a non-linear up-conversion can be performed with high efficiency in order to get, for example, a central emission at 580 nm, typical for Eu3+ resonance wavelength.
 In this poster, we show the preliminary results in term of modulation bandwidth, spurious suppression and wavelength tuning.
 [1] M. Tian, et Al., APPLIED OPTICS, 50, 36 (2011)
 [2] A. Kinos, et Al., ArXiv 2103.15743 (2021)
 [3] J. Etesse et Al., PRA, 103, 2 (2021)
 [4] A. Walther, et Al., PRA? A 92, 022319 (2015)
The Pro-Competitive Effects of Trade Agreements
Creators: name: Crowley, M. A.
name: Han, L.
Publisher: name: Faculty of Economics, University of Cambridge
Year: 2022
Subjects: competition policy
firm level data
markup elasticity
variable markups
trade agreements
trade elasticity

description: How does trade policy affect competition? Using the universe of product exports by firms from eleven low and middle-income countries, we document that tariff reductions under trade agreements have strong pro-competitive effects – they encourage entry and reduce the (tariff exclusive) price-cost markups of exporters. This finding, that markups fall with tariff cuts, contradicts a core prediction of standard oligopolistic competition models of trade. We extend a workhorse international pricing model of oligopolistic competition to include multiple countries and a rich preference structure. Our preference structure allows for fierce competition among firms from the same country and less intense competition among firms from different countries. We show a firm’s optimal markup after a tariff cut can rise or fall depending on the parameters of the preference structure and tariff-induced reallocation of market share among firms and across countries.
Persistence and Historical Evidence: The Example of the Rise of the Nazi Party
Creators: name: Guinnane, T. W.
name: Hoffman, P.
Publisher: name: Faculty of Economics, University of Cambridge
Year: 2022
Subjects: Historical persistence
medieval pogroms
social capital
culture
networks
Nazism
voting behavior
anti-Semitism
political parties
religion
empirical economics
data based estimates
econometrics

description: The persistence literature in economics and related disciplines connects recent outcomes to events long ago. Although this influential literature is promising, it raises serious questions about how to distinguish deep causal factors that persist across time from alternative explanations derived from the rapidly changing historical context or misuse of historical sources. We discuss two prominent examples that ground the rise of the Nazi Party in distant historical roots. Several econometric, analytical, and historical errors undermine the papers’ contention that deeply rooted culture and social capital fuelled the Nazi rise. The general lesson for persistence studies is that beyond careful econometrics and serious consideration of underlying mechanisms (including formal theory), they must pay scrupulous attention to the historical context and the limitations of historical data.
A New Dataset for Amateur Vocal Percussion Analysis
Creators: name: Delgado, Alejandro
name: McDonald, SKoT
name: Xu, Ning
name: Sandler, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The imitation of percussive instruments via the human voice is a natural way for us to communicate rhythmic ideas and, for this reason, it attracts the interest of music makers. Specifically, the automatic mapping of these vocal imitations to their emulated instruments would allow creators to realistically prototype rhythms in a faster way. The contribution of this study is two-fold. Firstly, a new Amateur Vocal Percussion (AVP) dataset is introduced to investigate how people with little or no experience in beatboxing approach the task of vocal percussion. The end-goal of this analysis is that of helping mapping algorithms to better generalise between subjects and achieve higher performances. The dataset comprises a total of 9780 utterances recorded by 28 participants with fully annotated onsets and labels (kick drum, snare drum, closed hi-hat and opened hi-hat). Lastly, we conducted baseline experiments on audio onset detection with the recorded dataset, comparing the performance of four state-of-the-art algorithms in a vocal percussion context.
Development of ESAL Forecasting Procedures for Superpave Pavement Design
Creators: name: Rister, Brad W.
name: Allen, David L.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1999
Subjects: subject: Transportation Engineering

description: This report documents the analysis methods used to develop the Equivalent Single Axle Load (ESAL) forecasting program for Superpave projects. In addition, this report discusses the procedures used in the ESAL forecasting program to forecast ESALs in the design lane for pavement resurfacing/overlay projects which are consistent with the Superpave process of asphaltic mixture design.
Μονωνυμικά ιδεώδη ελεύθερα τετραγώνων:
Creators: name: Καραβασίλη, Αρετή Παντελή
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Ελεύθερα τετραγώνων μονωνυμικά ιδεώδη
Ελεύθερες επιλύσεις
Θεώρημα του Hochster
Betti αριθμοί
Square free monomial ideals
Free resolutions
Betti numbers
Hochster formula

description: Σε αυτήν την εργασία ασχολουμαστε με τα μονωνυμικά ιδεώδη ελεύθερα τετραγώνων : μελετάμε τους Betti αριθμούς μέσω των ελάχιστων ελεύθερων επιλύσεων των ελεύθερων modules πάνω από έναν πολυωνυμικό δακτύλιο
description: In this paper we focus on square free monomial ideals. We study Betti numbers via free resolutions of free modules over a polynomail ring
Resonances and Spectral Shift Function for the semi-classical Dirac operator
Creators: name: Khochman, Abdallah
Publisher: name: arXiv
Year: 2006
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35B34; 35P05; 34L40; 81Q20; 81Q10

description: We consider the self-adjoint operator $H=H_0+V$, where $H_0$ is the free semi-classical Dirac operator on $R^3$. We suppose that the smooth matrix-valued potential $V=O(^{-δ}), δ>0,$ has an analytic continuation in a complex sector outside a compact. We define the resonances as the eigenvalues of the non-selfadjoint operator obtained from the Dirac operator $H$ by a complex distortions of $R^{3}$.We establish an upper bound $O(h^{-3})$ for the number of resonances in any compact domain. For $δ>3$, a representation of the derivative of the spectral shift function $ξ(λ,h)$ related to the semi-classical resonances of $H$ and a local trace formula are obtained. In particular, if $V$ is an electro-magnetic potential, we deduce a Weyl-type asymptotic of the spectral shift function. As a by-product, we obtain an upper bound $O(h^{-2})$ for the number of resonances close to non-critical energy levels in domains of width $h$ and a Breit-Wigner approximation formula for the derivative of the spectral shift function.
description: 39 pages, 1 figure
Probing the Cold Deep Depths of the California Molecular Cloud: The Icy Relationship between CO and Dust
Creators: name: Lewis, John Arban
name: Lada, Charles
name: Bieging, John
name: Kazarians, Anoush
name: Alves, João
name: Lombardi, Marco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the relationship between molecular gas and dust in the California Molecular Cloud over an unprecedented dynamic range of cloud depth (Av = 3 - 60 magnitudes). We compare deep Herschel-based measurements of dust extinction with observations of the 12CO, 13CO, and C18O J=2-1 lines on sub-parsec scales across the cloud. We directly measure the ratio of CO integrated intensity to dust extinction to derive the CO X-factor at over 1e5 independent locations in the cloud. Confirming an earlier study, we find that no single 12CO X-factor can characterize the molecular gas in the cold ( Tdust<20K) regions of the cloud that account for most of its mass. We are able to derive a single-valued X-factor for all three CO isotopologues in the warm ( Tdust>25 K ) material that is spatially coincident with an HII region surrounding the star LKHa101. We derive LTE CO column densities for 13CO and C18O since we find both lines are relatively optically thin. In the warm cloud material CO is completely in the gas phase and we are able to recover the total 13CO and C18O abundances. Using CO abundances and deep Herschel observations, we measure lower bounds to the freeze-out of CO onto dust across the whole cloud finding some regions having CO depleted by a factor of >20. We construct the first maps of depletion that span the extent of a giant molecular cloud. Using these maps we identify 75 depletion-defined cores and discuss their physical nature.
description: 36 figures
Heavy Truck Involvement in Traffic Accidents and Related Countermeasures
Creators: name: Pigman, Jerry G.
name: Agent, Kenneth R.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1999
Subjects: subject: Transportation Engineering

description: The objectives of this research study were to conduct a detailed analysis of truck accidents and recommend countermeasures to reduce the number and severity of this type of accident. Police reports for fatal accidents in which a truck was involved were reviewed for the period 1994 through 1997. Each accident report was reviewed and classified into types of accidents and causative factor categories. The most common accident involved another vehicle crossing the centerline into the path of a truck. The primary causative factor was related to the actions of the other driver, rather than the truck driver, in nearly two-thirds of the accidents. Countermeasures were recommended to reduce specific types of accidents. Locations were identified with the highest number of specific types of accidents and case studies were conducted to offer recommended solutions.  Data from a weigh-in-motion site on US 23 in Lawrence County was analyzed and summarized to show the pattern of loads being carried by coal trucks in eastern Kentucky. Results were used to offer data which could support revisions to the current weight limits for the Extended-Weight Coal Haul Road System for combination trucks and to develop an enforcement mechanism which could improve compliance. Data summarized by the Transportation Cabinet's Division of Vehicle Enforcement was also collected and summarized to show the results of commercial vehicle inspections and the adjudication process for citations issued.  Recommendations were made to reduce the number and severity of truck accidents. They included countermeasures relating to the vehicle, roadway, and driver.
Atoms in a radiofrequency-dressed optical lattice
Creators: name: Lundblad, N.
name: Lee, P. J.
name: Spielman, I. B.
name: Brown, B. L.
name: Phillips, W. D.
name: Porto, J. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We load cold atoms into an optical lattice dramatically reshaped by radiofrequency (rf) coupling of state-dependent lattice potentials. This rf dressing changes the unit cell of the lattice at a subwavelength scale, such that its curvature and topology departs strongly from that of a simple sinusoidal lattice potential. Radiofrequency dressing has previously been performed at length scales from mm to tens of microns, but not at the single-optical-wavelength scale. At this length scale significant coupling between adiabatic potentials leads to nonadiabatic transitions, which we measure as a function of lattice depth and dressing frequency and amplitude. We also investigate the dressing by measuring changes in the momentum distribution of the dressed states.
description: 5 pages, 4 figures
Evaluation Of Retesting in Kentucky's Driver License Process
Creators: name: Stamatiadis, Nikiforos
name: Agent, Kenneth R.
name: Pigman, Jerry G.
name: Ridgeway, Michael
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1999
Subjects: subject: Transportation Engineering

description: The objectives of this research were to first evaluate the existing practices regarding driver license renewal, driver retesting, and medical review board procedures and then identify and recommend methods that would improve these processes. The analysis of the Medical Review Board process indicated that, while it operates at an acceptable level in major urban areas, it is almost non-existent in most areas of the state. A brochure describing the process was developed for distribution to physicians. There is a universal agreement among researchers that vision has a significant role in driving performance and that visual abilities deteriorate with age. It is apparent that some type of vision screening should be implemented during the renewal process since it could identify individuals with potential deficiencies. Such screening could be achieved either with a test during the license renewal or with an eye exam prior to license renewal. In addition to the testing, a policy that identifies potential at-risk drivers should be considered. The combination of convictions (points) and crashes was considered as an appropriate means to distinguish such drivers. Special consideration should be given for older drivers at driver license renewal. In addition to the vision screening, a written test could be administered at license renewal along with a set of medical questions to determine their physical and mental status.
Anomalous Lattice Response at the Mott Transition in a Quasi-2D Organic Conductor
Creators: name: de Souza, M.
name: Bruehl, A.
name: Strack, Ch.
name: Wolf, B.
name: Schweitzer, D.
name: Lang, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Discontinuous changes of the lattice parameters at the Mott metal-insulator transition are detected by high-resolution dilatometry on deuterated crystals of the layered organic conductor $κ$-(BEDT-TTF)$_{2}$Cu[N(CN)$_{2}$]Br. The uniaxial expansivities uncover a striking and unexpected anisotropy, notably a zero-effect along the in-plane c-axis along which the electronic interactions are relatively strong. A huge thermal expansion anomaly is observed near the end-point of the first-order transition line enabling to explore the critical behavior with very high sensitivity. The analysis yields critical fluctuations with an exponent $\tildeα \simeq$ 0.8 $\pm$ 0.15 at odds with the novel criticality recently proposed for these materials [Kagawa \textit{et al.}, Nature \textbf{436}, 534 (2005)]. Our data suggest an intricate role of the lattice degrees of freedom in the Mott transition for the present materials.
description: 4 pages, 4 figures
Phase Transition in Sexual Reproduction and Biological Evolution
Creators: name: Zawierta, Marta
name: Waga, Wojciech
name: Mackiewicz, Dorota
name: Biecek, Przemyslaw
name: Cebrat, Stanislaw
Publisher: name: arXiv
Year: 2008
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Using Monte Carlo model of biological evolution we have discovered that populations can switch between two different strategies of their genomes' evolution; Darwinian purifying selection and complementing the haplotypes. The first one is exploited in the large panmictic populations while the second one in the small highly inbred populations. The choice depends on the crossover frequency. There is a power law relation between the critical value of crossover frequency and the size of panmictic population. Under the constant inbreeding this critical value of crossover does not depend on the population size and has a character of phase transition. Close to this value sympatric speciation is observed.
description: 13 pages, 8 figures
Procedures for Determining a Working Capacity for Disadvantaged Business Enterprises (DBE) for Highway Construction and Consulting Projects in Kentucky
Creators: name: Rister, Brad W.
name: Hancher, Donn E.
name: Toussaint, Paul E.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1999
Subjects: subject: Transportation Engineering

description: This report documents the working capacity of the Disadvantaged Business Enterprise (DBE) community performing on federal aid highway projects over the last four federal fiscal years 1995- 98. This includes the work performed by Minority Business Enterprises (MBE), Minority Women Business Enterprises (MWBE) , and Women Business Enterprises (WBE) construction firms serving both as a prime contractors and subcontractors. The work of DBE design consultants was not included as part of this study. The impact of five DBE firms who should be graduating from the program is also discussed. In addition several different scenarios are discussed relating to the adjustment of the current DBE federal goal, and to identify if the DBE community will be able to perform the adjusted volume of work in fiscal year 2000 if the current goal is reduced.
Design using randomness: a new dimension for metallurgy
Creators: name: Nöhring, Wolfram Georg
name: Curtin, W. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: High entropy alloys add a new dimension, atomic-scale randomness and the associated scale-dependent composition fluctuations, to the traditional metallurgical axes of time-temperature-composition-microstructure. Alloy performance is controlled by the energies and motion of defects (dislocations, grain boundaries, vacancies, cracks, ...). Randomness at the atomic scale can introduce new length and energy scales that can control defect behavior, and hence control alloy properties. The axis of atomic-scale randomness combined with the huge compositional space in multicomponent alloys thus enables, in tandem with still-valid traditional principles, a new broader alloy design strategy that may help achieve the multi-performance requirements of many engineering applications.
description: 7 pages, 4 figures
Updates on SSH with OpenId Connect
Creators: name: Gudu, Diana
name: Zachmann, Gabriel
name: Hardt, Marcus
name: Brocke, Lukas
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2024

description: The Secure Shell (SSH) Protocol is widely recognized as the de-facto standard for accessing remote servers on the command line, across a number of user cases, such as: remote system administration, git operations, system backups via rsync, and high-performance computing (HPC) access.

However, as federated infrastructures become more prevalent, there is a growing demand for SSH to operate seamlessly and securely in such environments. Managing SSH keys in federated setups poses a number of challenges, since SSH keys are trusted permanently, can be shared across devices and teams, and do not have a mechanism to enforce the use of passphrases. Unfortunately, there is currently no universally accepted usage pattern for globally federated usage.

The large variety of users with different backgrounds and usage profiles motivated us to develop a set of different tools for facilitating the integration with federated user identities. The main novelty that will be presented in this contribution is the integration of an SSH-certificate-based mechanism into the existing ecosystem for SSH with OpenId Connect, consisting of motley-cue and oidc-agent.

This new mechanism consists of a set of programs collectively referred to as "oinit". It aims to simplify the usage of SSH certificates by leveraging authorization information via established federation mechanisms. The main benefit is that, after an initial setup step, SSH may be used securely without interrupting existing flows, enabling the use of rsync, for example.

The core components of oinit include the following:

- oinit-ca: this component provides a REST interface to an SSH Certificate Authority (CA), allowing authorized users to obtain SSH certificates for specific hosts or host groups. Authorization decisions are handled by motley-cue, the component that enables federated use of SSH on the ssh-server side. User provisioning may also be triggered at this point, via motley-cue and feudal.
- oinit: client-side tool employed by users to add hosts to the oinit mechanism. Once configured, SSH certificates are automatically retrieved as needed and stored in the SSH agent.
- Server-side tools and configuration: these enable SSH usage without requiring knowledge of local usernames, a particularly useful feature in federated scenarios.

In addition to outlining the architecture and functionality of our solution, we provide an initial security assessment and offer a live demo of SSH with OpenID Connect, with oinit and selected components.
Πολιτική ιδεολογία και προπαγάνδα στην περιοχή της Καβάλας κατά την περίοδο 1960-1974:
Creators: name: Στυλιανού, Μαρία Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Πολιτική ιδεολογία
Προπαγάνδα
Εθνικοφροσύνη
Εμπιστευτικό πρωτόκολλο
Δικτατορία
Political ideology
Propaganda
National minded thought
Confidential archives
Dictatorship

description: Η εργασία αναφέρεται στην πολιτική ιδεολογία και προπαγάνδα της περιόδου 1960-1974 στην περιοχή της Καβάλας, η οποία εκφράστηκε με τη συστηματική διαφώτιση, την προβολή της εθνικοφροσύνης, την αξιοποίηση των επετείων και της ιστορικής μνήμης, με στόχο τον ιδεολογικό ελεγχο και την πειθάρχηση των πολιτών. Επίσης παρουσιάζει, τους φορείς που ανέλαβαν το έργο αυτό, όπως ο στρατός, τα σώματα ασφαλείας, οι εθνικοπατριωτικές οργανώσεις, η εκπαίδευση, η εκκλησία κ. ά. Η εργασία στηρίχθηκε σε αρχειακό υλικό (Εμπιστευτικό Πρωτόκολλο Νομαρχίας Καβάλας, Πρωτοδικείο Καβάλας) και στον τοπικό τύπο της εποχής
description: The essay is concerned with the political ideology and propaganda during the period 1960-1974 in the region of Kavala, which had been expressed with the systematic instruction, the promotion of the ideology of the national minded greeks, the exploitation of national celebrations and of the historical memory with the purpose of ideological control and the discipline of citizens. In addition, the essay presents the factors with took over this responsibility like the army, the police, the nationalistic and patriotic organisations, the education, the church, etc. This essay is based on the material of the Confidential Archives of Prefecture of Kavala and the archives of Court of the first instance of Kavala and on the publications of the contemporary local press
THE TECHNICAL BORDERS OF CYBERSPACE
Creators: name: Terebiński, Bartłomiej Adrian
Publisher: name: Wiedza Obronna
Year: 2023

description: Cyberspace is a domain of information collecting, storing and processing in a digital form. It operates based on digital signal transmission but sometimes, which is often forgotten, based on electromagnetic radiation. The literature analyses indicate that cyberspace is intangible in its essence but functions owing to ICT infrastructure that generates and sends the signals. A cyberspace user, i.e., a human, takes action based on measurable and geographically located infrastructure which exists in the material world but penetrates the “aterritorial” cyberspace. This paper aims to present various perspectives on the attempted answer to the question of whether technical borders of cyberspace exist.
description: Wiedza Obronna, Tom 285 Nr 4 (2023)
Permeability, compressibility, and friction coefficient measurements under confining pressure and strain, Leg 190, Nankai Trough
Creators: name: Bourlange, Sylvain
name: Jouniaux, Laurence
name: Henry, Pierre
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Permeability measured on three samples in a triaxial cell under effective confining pressure from 0.2 to 2.5 MPa ranges from 10E-18 to 10E-19m2. Overall, results indicate that permeability decreases with effective confining pressure up to 1.5 MPa; however, measurements at low effec-tive pressure are too dispersed to yield a precise general relationship between permeability and pressure. When the effective pressure is increased from 1.5 to 2.5 MPa, permeability is roughly constant (~1-4 x 10E-19 m2). Samples deformed in the triaxial cell developed slickenlined fractures, and permeability measurements were performed before and after failure. A permeability increase is observed when the sample fails under low effective confining pressure (0.2 MPa), but not under effective pressure corresponding to the overburden stress. Under isotropic stress conditions, permeability decrease related to fracture closure occurs at a relatively high effective pressure of ~1.5 MPa. Coefficients of friction on the fractures formed in the triaxial cell are ~0.4.
description: online : http://www-odp.tamu.edu/publications/190196SR/215/215.htm
Dynamic Buffer Sizing for Out-of-Order Event Compensation for Time-Sensitive Applications
Creators: name: Weiss, Wolfgang
name: Jimenez, Victor J. Exposito
name: Zeiner, Herwig
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Today's sensor network implementations often comprise various types of nodes connected with different types of networks. These and various other aspects influence the delay of transmitting data and therefore of out-of-order data occurrences. This turns into a crucial problem in time-sensitive applications where data must be processed promptly and decisions must be reliable. In this paper, we were researching dynamic buffer sizing algorithms for multiple, distributed and independent sources, which reorder event streams, thus enabling subsequent time-sensitive applications to work correctly. To be able to evaluate such algorithms, we had to record datasets first. Five novel dynamic buffer sizing algorithms were implemented and compared to state-of-the-art approaches in this domain. The evaluation has shown that the use of a dynamic time-out buffering method is preferable over a static buffer. The higher the variation of the network or other influences in the environment, the more necessary it becomes to use an algorithm which dynamically adapts its buffer size. These algorithms are universally applicable, easy to integrate in existing architectures, and particularly interesting for time-sensitive applications. Dynamic time-out buffering is still a trade-off between reaction time and out-of-order event compensation.
Berliner Kirchentag mit ökumenischem Zugewinn für die ACK
Creators: name: Voigt, Karl Heinz
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 52 Nr. 4 (2003): Ökumenische Rundschau, Band 52, Heft 4
Some thermal transport properties of the FPU model with quadratic pinning
Creators: name: Aoki, Kenichiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Thermal transport properties of the FPU $β$ model with a quadratic pinning term are investigated for various couplings and temperatures. In particular, the size dependence of the thermal conductivity, $κ\propto L^α$, is studied. $α$ agrees with that of the FPU $β$ model (with no pinning) at high temperatures but decreases at low temperatures. This crossover behavior occurs at a temperature depending on the strength of the quadratic pinning.
description: 10pages, 4 figs
Overcoming the problem of substance misuse: adolescent experience in a narrative re-authoring program
Creators: name: Saville, Stephanie
Publisher: name: University of British Columbia
Year: 2009

description: Current bodies of knowledge in the field of counselling people struggling with substance misuse problems are dominated by the biomedical model and the disease metaphor. This perspective locates the etiology of substance misuse within the person's biochemistry, in contrast to a narrative perspective proposing that problems with substance use be viewed within a political and sociocultural context. The purpose of this study was to explore the experience of young persons who participated in a non-traditional residential program for substance misuse problems based on a narrative re-authoring approach, and have successfully overcome their problems with substance misuse. A descriptive exploratory case study design was employed to identify commonalities in the experiences of three adolescent co-researchers. Unstructured in-depth interviews were conducted to elicit their experiences. Interviews were audiotaped, transcribed and fashioned into narrative accounts which were then analyzed for thematic commonalities. The study lent support for a re-authoring therapeutic approach to assist persons struggling with the effects of substance misuse problems. The results suggest the importance of encouraging dissident discourses and divergent perspectives in the drug and alcohol field. The study also provides documentation of the solution knowledges and wisdom of young persons which can inform practice and further research, serve as a worthy criticism of current dominant discourses, and enrich their own experiences of personal authorship of their victory stories over substances. This study can be of benefit to drug and alcohol counsellors in encouraging a more deconstructive approach to dominant therapeutic discourses, and in drawing awareness to key program components as they were experienced by successful participants.
QCD Effects in the Decays of TeV Black Holes
Creators: name: Alig, Christian
name: Drees, Manuel
name: Oda, Kin-ya
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In models with ``large'' and/or warped extra dimensions, the higher-dimensional Planck scale may be as low as a TeV. In that case black holes with masses of a few TeV are expected to be produced copiously in multi-TeV collisions, in particular at the LHC. These black holes decay through Hawking radiation into typically O(20) Standard Model particles. Most of these particles would be strongly interacting. Naively this would lead to a final state containing 10 or so hadronic jets. However, it has been argued that the density of strongly interacting particles would be so large that they thermalize, forming a ``chromosphere'' rather than well-defined jets. In order to investigate this, we perform a QCD simulation which includes parton-parton scattering in addition to parton showering. We find the effects of parton scattering to remain small for all cases we studied, leading to the conclusion that the decays of black holes with masses within the reach of the LHC will not lead to the formation of chromospheres.
description: LaTeX with equation.sty (included), 26 pages, 4 figures. Added a few references and one footnote
URBICIDE AND DESTRUCTION IN EASTERN EUROPE: WARSAW, MARIUPOL, AND AGHDAM IN COMPARATIVE ANALYSIS
Creators: name: Shafiyev, Farid
name: Aliyeva, Aysu
name: Rahmanov, Araz
name: Salmanov, Bakhtiyar
name: Naghili, Elvin
name: Rustamova, Inji
name: Sultanzada, Zeytuna
Publisher: name: Wiedza Obronna
Year: 2023

description: The term urbicide is generally understood as “violence against the city” or “destruction of the urban,” where urbs means “city” and cide refers to the “killing.” This term applies to a deliberate attempt to destroy a city or urban settlement. However, urbicide represents neither a supplement to mass extermination nor collateral to armed intervention, as its purpose is to ruin the city itself. The term was coined in 1963 by Michael Moorcock and has been widely employed to describe urban restructuring, mostly in Western countries. However, scholars began using this term in the context of destruction beginning with the Balkan Wars in the 1990s, especially after the “Siege of Sarajevo.” Besides the Balkan Wars, different types of urbicide have happened in the Middle East and Eastern Europe, including in post-Soviet countries. The present renewed interest in the topic of urbicide is connected with the wars in Syria and Ukraine. This study focused on the first incident of urbicide in modern warfare, Warsaw during the Second World War, and two recent cases: Mariupol in Ukraine and Aghdam in Azerbaijan. The author, by comparing different cases, posits that a warring party that embarks on urbicide might pursue different goals—not only to destroy a conflicting party’s defense, but also to erase the city’s cultural attribution as well as to prevent the future rehabilitation and return of the pre-war population.
description: Wiedza Obronna, Tom 285 Nr 4 (2023)
Εργαστηριακές Ασκήσεις Δικτύων Η/Υ:
Creators: name: Γούσια, Πολυξένη Σωτηρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Δρομολογητής
Ασφάλεια
Γλώσσα IOS
Routers
RIP
OSFP
Security

description: Στην παρούσα μεταπτυχιακή διατριβή εξετάζονται οι δυνατότητες των Cisco Router 871W όσον αφορά την διαχείριση και την ασφάλεια που μπορούν να προσφέρουν σε δικτυακά περιβάλλοντα. Αρχικά γίνεται μια περιγραφή των Cisco Router 871W, των δυνατοτήτων τους, του τρόπου σύνδεσης σε αυτά και τις γλώσσας IOS (γλώσσα εντολών CISCO για τη ρύθμιση του δρομολογητή) με τις βασικές εντολές που θα χρειαστούμε για την εκτέλεση των ασκήσεων.Έπειτα, από τη σύντομη γνωριμία με το υλικό και τη γλώσσα IOS ακολουθούν ασκήσεις πάνω στα θεματικά αντικείμενα που περιγράφηκαν παραπάνω. Για κάθε θεματικό αντικείμενο παρέχεται θεωρητική προσέγγιση ενώ στη συνέχεια ακολουθούν ασκήσεις όπου εφαρμόζονται σενάρια χρήσεων των τεχνολογιών που αναλύθηκαν παραπάνω.
description: In the present postgraduate thesis are examined the possibilities of Cisco Router 871W with regard to the management and the safety that they can offer in network environments. Initially becomes a description of Cisco Router 871W, their possibilities, way of connection in them and language IOS (language of commands CISCO on the regulation of router) with the basic commands that we will need for the implementation of exercises. Then, from the short acquaintance with the material and language IOS they follow exercises on the thematic objects that were described more. For each thematic object is provided theoretical approach while afterwards they follow exercises where are applied scripts of uses of technologies that were analyzed more.
UKRAINIAN LANGUAGE AS A SYMBOL OF RESISTANCE AGAINST THE INVASION OF THE RUSSIAN FEDERATION
Creators: name: Gergało-Dąbek, Nadia
Publisher: name: Wiedza Obronna
Year: 2023

description: In the Russian-Ukrainian conflict of identity, which began with the incorporation of ethnic Ukrainian lands into the Muscovite state and has been ongoing with varying intensity for almost 370 years, and has had the dimension of a large-scale war since the end of February 2022, language is not of little importance. Throughout history, as Ukrainians have defended the preservation of their national identity, an important, yet invisible front line has generally run along the language issue. While the Russian language has been used by the Kremlin as a pretext for invasion (the alleged defense of the Russian-speaking population), Ukrainian is often their last bastion of freedom and independence. While in Russia the Ukrainian language is treated as a manifestation of Russophobia in itself, for Russian-speaking residents of the occupied regions of Ukraine it has become a symbol and often the only possible manifestation of resistance to the invaders. A symbolic tool of struggle and defiance, an expression of hope, a yearning for independence and the epitome of patriotism in Russian-occupied cities is the Ukrainian letter "Ї." In Russian-occupied cities such as Mariupol and Henichesk, the underground resistance movement adopted this very letter as a kind of symbol of freedom, painting it on walls, sidewalks, monuments, and other public places, risking repression and loss of life. The article sheds light on a unique aspect of the Russian-Ukrainian armed conflict and analyzes how a single Ukrainian letter became, for predominantly Russian-speaking Ukrainian cities, a source of mobilization, a tool of resistance and expression of a non-Russian identity, a symbol of defiance against attempts to impose foreign military, political, and cultural domination.
description: Wiedza Obronna, Tom 285 Nr 4 (2023)
Erfahrungen und Schwierigkeiten bei der Aufarbeitung der Vergangenheit
Creators: name: Garstecki, Joachim
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 52 Nr. 4 (2003): Ökumenische Rundschau, Band 52, Heft 4
Her body speaks : the experience of dance therapy for women
Creators: name: Mills, Letty Jane
Publisher: name: University of British Columbia
Year: 2009

description: A qualitative, phenomenological methodology was used to explore the experience of women who had participated in dance therapy and had found it facilitative of their personal growth and healing. The participants were six women between the ages of 25 and 47 who had been involved in group and individual dance therapy within the last one to four years. The women described their experience of dance therapy during in-depth, individual interviews. Using Colaizzi's (1978) approach to phenomenological data analysis, five themes that were common to all the study participants emerged. These themes described the women's sense of spontaneity and permission to play, their sense of struggle, their sense of freedom, their sense of intimate connection, and their experience of reconnection to their bodies.
Investigation of Factors Affecting Vertical Sag of Stretched Wire
Creators: name: Yuan, Jiandong
name: Wu, Junxia
name: Zhang, Bin
name: He, Yuan
name: Zhang, Junhui
name: Chen, Wenjun
name: Wang, Shaoming
name: Sun, Guozhen
name: Zhang, Xundong
name: Yan, Lisong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: To study vertical sag requirements and factors affecting the stretched wire alignment method, the vertical sag equation is first derived theoretically. Subsequently, the influencing factors,such as the hanging weight or tension, span length, temperature change, elastic deformation, and the Earths rotation, of the vertical sag are summarized, and their validity is verified through actual measurements. Finally, the essential factors affecting vertical sag, the specific strength and length, are discussed. It is believed that the vertical sag of a stretched wire is proportional to the square of the length and inversely proportional to the specific strength of the material.
description: 19 pages, 6 figures