cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Improving the security of secure direct communication based on secret transmitting order of particles
Creators: name: Li, Xi-Han
name: Deng, Fu-Guo
name: Zhou, Hong-Yu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyzed the security of the secure direct communication protocol based on secret transmitting order of particles recently proposed by Zhu, Xia, Fan, and Zhang [Phys. Rev. A 73, 022338 (2006)], and found that this scheme is insecure if an eavesdropper, say Eve, wants to steal the secret message with Trojan horse attack strategies. The vital loophole in this scheme is that the two authorized users check the security of their quantum channel only once. Eve can insert another spy photon, an invisible photon or a delay one in each photon which the sender Alice sends to the receiver Bob, and capture the spy photon when it returns from Bob to Alice. After the authorized users check the security, Eve can obtain the secret message according to the information about the transmitting order published by Bob. Finally, we present a possible improvement of this protocol.
description: 4 pages, no figure
PGT: A Progressive Method for Training Models on Long Videos
Creators: name: Pang, Bo
name: Peng, Gao
name: Li, Yizhuo
name: Lu, Cewu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Convolutional video models have an order of magnitude larger computational complexity than their counterpart image-level models. Constrained by computational resources, there is no model or training method that can train long video sequences end-to-end. Currently, the main-stream method is to split a raw video into clips, leading to incomplete fragmentary temporal information flow. Inspired by natural language processing techniques dealing with long sentences, we propose to treat videos as serial fragments satisfying Markov property, and train it as a whole by progressively propagating information through the temporal dimension in multiple steps. This progressive training (PGT) method is able to train long videos end-to-end with limited resources and ensures the effective transmission of information. As a general and robust training method, we empirically demonstrate that it yields significant performance improvements on different models and datasets. As an illustrative example, the proposed method improves SlowOnly network by 3.7 mAP on Charades and 1.9 top-1 accuracy on Kinetics with negligible parameter and computation overhead. Code is available at https://github.com/BoPang1996/PGT.
description: CVPR21, Oral
Comparing Alternatives to the Fixed Degree Sequence Model for Extracting the Backbone of Bipartite Projections
Creators: name: Neal, Zachary P.
name: Domagalski, Rachel
name: Sagan, Bruce
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Projections of bipartite or two-mode networks capture co-occurrences, and are used in diverse fields (e.g., ecology, economics, bibliometrics, politics) to represent unipartite networks. A key challenge in analyzing such networks is determining whether an observed number of co-occurrences between two nodes is significant, and therefore whether an edge exists between them. One approach, the fixed degree sequence model (FDSM), evaluates the significance of an edge's weight by comparison to a null model in which the degree sequences of the original bipartite network are fixed. Although the FDSM is an intuitive null model, it is computationally expensive because it requires Monte Carlo simulation to estimate each edge's $p$-value, and therefore is impractical for large projections. In this paper, we explore four potential alternatives to FDSM: fixed fill model (FFM), fixed row model (FRM), fixed column model (FCM), and stochastic degree sequence model (SDSM). We compare these models to FDSM in terms of accuracy, speed, statistical power, similarity, and ability to recover known communities. We find that the computationally-fast SDSM offers a statistically conservative but close approximation of the computationally-impractical FDSM under a wide range of conditions, and that it correctly recovers a known community structure even when the signal is weak. Therefore, although each backbone model may have particular applications, we recommend SDSM for extracting the backbone of bipartite projections when FDSM is impractical.
Live Objects All The Way Down: Removing the Barriers between Applications and Virtual Machines
Creators: name: Pimás, Javier E.
name: Marr, Stefan
name: Garbervetsky, Diego
Publisher: name: arXiv
Year: 2023
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Object-oriented languages often use virtual machines (VMs) that provide mechanisms such as just-in-time (JIT) compilation and garbage collection (GC). These VM components are typically implemented in a separate layer, isolating them from the application. While this approach brings the software engineering benefits of clear separation and decoupling, it introduces barriers for both understanding VM behavior and evolving the VM implementation. For example, the GC and JIT compiler are typically fixed at VM build time, limiting arbitrary adaptation at run time. Furthermore, because of this separation, the implementation of the VM cannot typically be inspected and debugged in the same way as application code, enshrining a distinction in easy-to-work-with application and hard-to-work-with VM code. These characteristics pose a barrier for application developers to understand the engine on top of which their own code runs, and fosters a knowledge gap that prevents application developers to change the VM.
 We propose Live Metacircular Runtimes (LMRs) to overcome this problem. LMRs are language runtime systems that seamlessly integrate the VM into the application in live programming environments. Unlike classic metacircular approaches, we propose to completely remove
the separation between application and VM. By systematically applying object-oriented design to VM components, we can build live runtime systems that are small and flexible enough, where VM engineers can benefit of live programming features such as short feedback loops, and application developers with fewer VM expertise can benefit of the stronger causal connections between their programs and the VM implementation.
 To evaluate our proposal, we implemented Bee/LMR, a live VM for a Smalltalk-derivative environment in 22057 lines of code. We analyze case studies on tuning the garbage collector, avoiding recompilations by the just-in-time compiler, and adding support to optimize code with vector instructions to demonstrate the trade-offs of extending exploratory programming to VM development in the context of an industrial application used in production. Based on the case studies, we illustrate how our approach facilitates the daily development work of a small team of application developers.
 Our approach enables VM developers to gain access to live programming tools traditionally reserved for application developers, while application developers can interact with the VM and modify it using the high-level tools they use every day. Both application and VM developers can seamlessly inspect, debug, understand, and modify the different parts of the VM with shorter feedback loops and higher-level tools.
title: Simetria : a medida e o belo
Creators: name: Gonçalves, Clara Germana
Publisher: name: As fórmulas na arquitectura
Year: 2020

description: As fórmulas na arquitectura / 4.º Seminário Internacional de Arquitectura e Matemática ; coordenação de Fátima Silva, Elsa Negas, Rui Seco. - Lisboa : Universidade Lusíada, 2020. - P. 247-262.
Theoretical studies of carbon isotopic fractionation in reactions of C with C$_{2}$: dynamics, kinetics, and isotopologue equilibria
Creators: name: Rocha, C. M. R.
name: Linnartz, H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Our current understanding of interstellar carbon fractionation hinges on the interpretation of astrochemical kinetic models. Yet, the various reactions included carry large uncertainties in their (estimated) rate coefficients, notably those involving C with C$_{2}$. In this work, we provide theoretical thermal rate coefficients as a function of the temperature for all possible gas-phase isotope-exchange reactions of C+C$_{2}(X^{1}Σ_{g}^{+},a^{3}Π_{u})$. For this, we employ the quasi-classical trajectory method, with the previously obtained potential energy surfaces of C$_{3}$ dictating the forces between the colliding partners. The calculated rate coefficients show a positive temperature dependence and are markedly different from previous theoretical estimates. While the forward reactions are fast and inherently exothermic owing to the lower zero-point energy content of the products, the reverse processes have temperature thresholds. For each reaction considered, analytic three-parameter Arrhenius-Kooij formulas are provided that readily interpolate/extrapolate the associated forward and backward rates. These forms can further be introduced in astrochemical networks. Apart from the proper kinetic attributes, we also provide equilibrium constants for these processes, thence confirming their prominence in the overall C fractionation chemistry. In this respect, the $^{13}$C + $^{12}$C$_{2}(X^{1}Σ^{+}_{g})$ and $^{13}$C + $^{12}$C$_{2}(a^{3}Π_{u})$ reactions are found to be particularly conspicuous, notably at the typical temperatures of dense molecular clouds. For these reactions and considering both equilibrium and time-dependent chemistry, theoretical $^{12}$C/$^{13}$C ratios as a function of the gas kinetic temperature are also derived and shown to be consistent with available model chemistry and observational data on C$_{2}$
description: Accepted for publication in A&A
Provably Fair Cooperative Scheduling
Creators: name: Hähnle, Reiner
name: Henrio, Ludovic
Publisher: name: arXiv
Year: 2023
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: The context of this work is cooperative scheduling, a concurrency paradigm, where task execution is not arbitrarily preempted. Instead, language constructs exist that let a task voluntarily yield the right to execute to another task.
 The inquiry is the design of provably fair schedulers and suitable notions of fairness for cooperative scheduling languages. To the best of our knowledge, this problem has not been addressed so far.
 Our approach is to study fairness independently from syntactic constructs or environments, purely from the point of view of the semantics of programming languages, i.e., we consider fairness criteria using the formal definition of a program execution. We develop our concepts for classic structural operational semantics (SOS) as well as for the recent locally abstract, globally concrete (LAGC) semantics. The latter is a highly modular approach to semantics ensuring the separation of concerns between local statement evaluation and scheduling decisions.
 The new knowledge contributed by our work is threefold: first, we show that a new fairness notion, called quiescent fairness, is needed to characterize fairness adequately in the context of cooperative scheduling; second, we define a provably fair scheduler for cooperative scheduling languages; third, a qualitative comparison between the SOS and LAGC versions yields that the latter, while taking higher initial effort, is more amenable to proving fairness and scales better under language extensions than SOS.
 The grounding of our work is a detailed formal proof of quiescent fairness for the scheduler defined in LAGC semantics.
 The importance of our work is that it provides a formal foundation for the implementation of fair schedulers for cooperative scheduling languages, an increasingly popular paradigm (for example: akka/Scala, JavaScript, async Rust). Being based solely on semantics, our ideas are widely applicable. Further, our work makes clear that the standard notion of fairness in concurrent languages needs to be adapted for cooperative scheduling and, more generally, for any language that combines atomic execution sequences with some form of preemption.
Ricci Nilsoliton Black Holes
Creators: name: Hervik, Sigbjorn
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We follow a constructive approach and find higher-dimensional black holes with Ricci nilsoliton horizons. The spacetimes are solutions to Einstein's equation with a negative cosmological constant and generalises therefore, anti-de Sitter black hole spacetimes. The approach combines a work by Lauret -- which relate so-called Ricci nilsolitons and Einstein solvmanifolds -- and an earlier work by the author. The resulting black hole spacetimes are asymptotically Einstein solvmanifolds and thus, are examples of solutions which are not asymptotically Anti-de Sitter. We show that any nilpotent group in dimension $n\leq 6$ has a corresponding Ricci nilsoliton black hole solution in dimension (n+2). Furthermore, we show that in dimensions (n+2)>8, there exists an infinite number of locally distinct Ricci nilsoliton black hole metrics.
description: 19 pages; fixed formatting problems
MPEC 2024-T61 : 2024 TS
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 TS

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IDENTITY FUSION AND REMEMEMBRANCE PROCESSES
Creators: name: Aguilera-Luque, Ana María
Publisher: name: figshare
Year: 2021
Subjects: subject: Organizational Behavioral Psychology
subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology
subject: 170113 Social and Community Psychology
subject: 170107 Industrial and Organisational Psychology
subject: Applied Psychology

description: Purpose: From the assumption that identity fusion will influence the processes of remembrance, this works propose that individuals classified as fused will remember
more in detail certain events of their countries, and the influence of these events will be greater in their identities than the influence in individuals classified as not fused.
Method: In a sample of 450 Spanish subjects, with representativeness close to gender parity, a correlational study is proposed through an online survey. The main objective is to test the possible influence of "person-country" fusion in his/her remembrance processes, for unpleasant experiences in that country, as well as, in his /her identity conformation.
Findings1: The two hypotheses proposed have been refused, due to there is not a significant difference between means in both groups, fused and not fused with their
country, for remembrance clarity and remembrance importance, as variables in this study, for the individual’s identity conformation in the experimental condition
unpleasant event.
identity fusion and its influence in memory.pdf
Creators: name: Aguilera-Luque, Ana María
Publisher: name: figshare
Year: 2016
Subjects: subject: Organizational Behavioral Psychology
subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology
subject: 170113 Social and Community Psychology
subject: 170107 Industrial and Organisational Psychology
subject: Applied Psychology

description: Purpose: From the assumption that identity fusion will influence the processes of remembrance, this works propose that individuals classified as fused will remember
more in detail certain events of their countries, and the influence of these events will be greater in their identities than the influence in individuals classified as not fused.
Method: In a sample of 450 Spanish subjects, with representativeness close to gender parity, a correlational study is proposed through an online survey. The main objective is to test the possible influence of "person-country" fusion in his/her remembrance processes, for unpleasant experiences in that country, as well as, in his /her identity conformation.
Findings1: The two hypotheses proposed have been refused, due to there is not a significant difference between means in both groups, fused and not fused with their
country, for remembrance clarity and remembrance importance, as variables in this study, for the individual’s identity conformation in the experimental condition
unpleasant event.
Discovery of a Very Bright, Nearby Gravitational Microlensing Event
Creators: name: Gaudi, B. Scott
name: Patterson, Joseph
name: Spiegel, David S.
name: Krajci, Thomas
name: Koff, R.
name: Pojmanski, G.
name: Dong, Subo
name: Gould, Andrew
name: Prieto, Jose L.
name: Blake, Cullen H.
name: Roming, Peter W. A.
name: Bennett, David P.
name: Bloom, Joshua S.
name: Boyd, David
name: de Ponthiere, Pierre
name: Mirabal, N.
name: Morgan, Christopher W.
name: Remillard, Ronald R.
name: Vanmunster, T.
name: Wagner, R. Mark
name: Watson, Linda C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the serendipitous detection of a very bright, very nearby microlensing event. In late October 2006, an otherwise unremarkable A0 star at a distance ~1 kpc (GSC 3656-1328) brightened achromatically by a factor of nearly 40 over the span of several days and then decayed in an apparently symmetrical way. We present a light curve of the event based on optical photometry from the Center for Backyard Astrophysics and the All Sky Automated Survey, as well as near-infrared photometry from the Peters Automated Infrared Imaging Telescope. This light curve is well-fit by a generic microlensing model. We also report optical spectra, and Swift X-ray and UV observations that are consistent with the microlensing interpretation. We discuss and reject alternative explanations for this variability. The lens star is probably a low-mass star or brown dwarf, with a relatively high proper motion of >20 mas/yr, and may be visible using precise optical/infrared imaging taken several years from now. A modest, all-sky survey telescope could detect ~10 such events per year, which would enable searches for very low-mass planetary companions to relatively nearby stars.
description: 11 pages, 5 figures. Accepted to ApJ, to appear in the May 1, 2008 issue (v678). Minor changes. Data available upon request
Reformulation and generalisation of the air-gap element
Creators: name: De Gersem, Herbert
name: Weiland, Thomas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: The air-gap macro element is reformulated such that rotation, rotor or stator skewing and rotor eccentricity can be incorporated easily. The air-gap element is evaluated using Fast Fourier Transforms which in combination with the Conjugate Gradient algorithm leads to highly efficient and memory inexpensive iterative solution scheme. The improved air-gap element features beneficial approximation properties and is competitive to moving-band and sliding-surface technique.
description: published in ICS Newsletter (International Compumag Society)
Automated Software Vulnerability Assessment with Concept Drift
Creators: name: Le, Triet H. M.
name: Sabir, Bushra
name: Babar, M. Ali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Software Engineering researchers are increasingly using Natural Language Processing (NLP) techniques to automate Software Vulnerabilities (SVs) assessment using the descriptions in public repositories. However, the existing NLP-based approaches suffer from concept drift. This problem is caused by a lack of proper treatment of new (out-of-vocabulary) terms for the evaluation of unseen SVs over time. To perform automated SVs assessment with concept drift using SVs' descriptions, we propose a systematic approach that combines both character and word features. The proposed approach is used to predict seven Vulnerability Characteristics (VCs). The optimal model of each VC is selected using our customized time-based cross-validation method from a list of eight NLP representations and six well-known Machine Learning models. We have used the proposed approach to conduct large-scale experiments on more than 100,000 SVs in the National Vulnerability Database (NVD). The results show that our approach can effectively tackle the concept drift issue of the SVs' descriptions reported from 2000 to 2018 in NVD even without retraining the model. In addition, our approach performs competitively compared to the existing word-only method. We also investigate how to build compact concept-drift-aware models with much fewer features and give some recommendations on the choice of classifiers and NLP representations for SVs assessment.
description: Published as a full paper at the 16th International Conference on Mining Software Repositories 2019
Data from: The design of an intelligent fault-tolerant control for floating offshore wind turbine with blade faults
Creators: name: Lee, Matthew Andrew
Publisher: name: Zenodo
Year: 2024
Subjects: wind turbine
Quality control
Engineers
Sign systems
Wind power

description: The great efficiency and deep-sea suitability of floating offshore wind turbines (FOWTs) have led to their rapid development. It is also extremely difficult to regulate FOWTs. Two major obstacles are the increased component failure rate and the difficulty of accurately modelling FOWTs. For that reason, this study suggests a model-free adaptive fault-tolerant control strategy to deal with problems caused by blade root moment sensors. In order to sidestep the need to mathematically describe FOWT, a fault compensation and individual pitch controller are developed using a model-free adaptive control technique. Instead of requiring fault detection and isolation, the suggested fault-tolerant control scheme turns fault dynamic compensation into a nonlinear system's control issue that has to be solved in real-time. By simulating and testing the suggested control method using FAST, we find that it not only keeps the wheel's bearing load balanced, but it also greatly reduces the FOWT's bearing load and the floating platform's movement. Also, the strategy's great fault tolerance capabilities under numerous blade root moment sensor failures is confirmed by the fact that the output power is closer to the rated power.
description: Offshore wind turbines (FOWTs) have grown significantly due to their deep sea suitability and high power generating efficiency. However, FOWT control is challenging. FOWT modelling accuracy and component failure rates are the key issues. This research suggests a model-free adaptive fault-tolerant control strategy for blade root moment sensor failures. Using model-free adaptive control, an individual pitch controller and fault compensator are created to circumvent mathematical modelling of FOWT. Our fault-tolerant control technique eliminates the requirement for fault detection and isolation, turning fault dynamic compensation into a real-time issue for nonlinear systems. FAST simulations demonstrate that the proposed control technique effectively balances wheel bearing load, reduces floating platform movement, and greatly reduces FOWT bearing load. Additionally, the strategy's output power is close to the rated power, demonstrating remarkable fault tolerance with numerous blade root moment sensor failures.
The process of change during three interventions for claustrophobia
Creators: name: Booth, Richard
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this study was to investigate the process of change during three interventions for claustrophobia, and to provide descriptive data about this fear. Forty-eight participants, recruited from the community through the local media, were randomly assigned to one of four groups: exposure to the locked test closet used for assessment, exposure to the sensations of anxiety (interoceptive exposure), modification of underlying negative cognitions, or a control group. All interventions were given over three sessions. The exposure group proved superior to the control on a wide range of measures. In the cognitive group, scores of reported fear and panic, but not predictions of fear or heart rate, were lowered, an important finding since this group had no exposure to the closet during training. The interoceptive group made some modest gains, but these did not translate into reduction in fear scores. An analysis of the timing of fear reduction, and of treatment generalization, provided some clues as to the mechanism of change. Structured interviews provided data on aspects of the fear including its onset, patterns of current avoidance, and common salient cognitions. The results are discussed in the light of recent findings on panic disorder.
Collective dynamics of heterogeneously and nonlinearly coupled phase oscillators
Creators: name: Xu, Can
name: Tang, Xiaohuan
name: Lü, Huaping
name: Alfaro-Bittner, Karin
name: Boccaletti, Stefano
name: Perc, Matjaz
name: Guan, Shuguang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Coupled oscillators have been used to study synchronization in a wide range of social, biological, and physical systems, including pedestrian-induced bridge resonances, coordinated lighting up of firefly swarms, and enhanced output peak intensity in synchronizing laser arrays. Here we advance this subject by studying a variant of the Kuramoto model, where the coupling between the phase oscillators is heterogeneous and nonlinear. In particular, the quenched disorder in the coupling strength and the intrinsic frequencies are correlated, and the coupling itself depends on the amplitude of the mean-field of the system. We show that the interplay of these factors leads to a fascinatingly rich collective dynamics, including explosive synchronization transitions, hybrid transitions with hysteresis absence, abrupt irreversible desynchronization transitions, and tiered phase transitions with or without a vanishing onset. We develop an analytical treatment that enables us to determine the observed equilibrium states of the system, as well as to explore their asymptotic stability at various levels. Our research thus provides theoretical foundations for a number of self-organized phenomena that may be responsible for the emergence of collective rhythms in complex systems.
description: 13 pages, 2 figures; accepted for publication in Physical Review Research
Multiparty Quantum Remote Secret Conference
Creators: name: Li, Xi-Han
name: Li, Chun-Yan
name: Deng, Fu-Guo
name: Zhou, Ping
name: Liang, Yu-Jie
name: Zhou, Hong-Yu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present two schemes for multiparty quantum remote secret conference in which each legitimate conferee can read out securely the secret message announced by another one, but a vicious eavesdropper can get nothing about it. The first one is based on the same key shared efficiently and securely by all the parties with Greenberger-Horne-Zeilinger (GHZ) states, and each conferee sends his secret message to the others with one-time pad crypto-system. The other one is based on quantum encryption with a quantum key, a sequence of GHZ states shared among all the conferees and used repeatedly after confirming their security. Both these schemes are optimal as their intrinsic efficiency for qubits approaches the maximal value.
description: 4 pages, 1 figure
THE RELATIONS BETWEEN PUBLIC DIPLOMACY AND NATION BRANDS: AN INVESTIGATION OF NATION BRANDING IN TURKEY
Creators: name: Tecmen, Ayşe
Publisher: name: Zenodo
Year: 2018
Subjects: public diplomacy, nation brand, Turkey

description: In the last two decades, nation branding has become a discursive asset in politics due to the
 increasing significance of public opinion in countries’ ability to compete in a globalised economic
 and political setting. Due to the multiplicity of incentives to brand nations, this subject matter
 has received extensive attention from both academics and practitioners. The first part of this
 Working Paper delineates the extant theoretical and academic debates on the relations between
 public diplomacy and nation brands, and sheds light on how nation brands are deployed to
 influence foreign public opinions. The second part delineates the stages of nation branding
 which illustrates the complexity of the nation branding process while drawing attention to the
 importance of economic, political, and cultural assets. The third part of this Paper focuses on the
 making of Brand Turkey as well as the recent projects and campaigns carried out in this scope.
 Dr. Tecmen’s discussion reveals that there are both economic and political incentives to brand
 Turkey, and the diversity of the campaign carried out by the government illustrates their
 significance to formulating a unique, articulate, and competitive nation brand. More importantly,
 this study demonstrates that innovative approaches to diplomacy, particularly in terms of stateto-
 public communications, have become essential to ascertaining countries’ distinctive
 characteristics derived from their national assets. This Working Paper partly derives from Dr.
 Tecmen’s research for the CoHERE project, which is an EU-funded Horizon 2020 project titled
 “Critical Heritages: performing and representing identities in Europe”.
 AYHAN KAYA
 Jean Monnet Chair of European Politics of Interculturalism
 Director, European Institute
 Istanbul Bilgi University
The Observed Concentration-Mass Relation for Galaxy Clusters
Creators: name: Comerford, Julia M.
name: Natarajan, Priyamvada
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The properties of clusters of galaxies offer key insights into the assembly process of structure in the universe. Numerical simulations of cosmic structure formation in a hierarchical, dark matter dominated universe suggest that galaxy cluster concentrations, which are a measure of a halo's central density, decrease gradually with virial mass. However, cluster observations have yet to confirm this correlation. The slopes of the run of measured concentrations with virial mass are often either steeper or flatter than predicted by simulations. In this work, we present the most complete sample of observed cluster concentrations and masses yet assembled, including new measurements for 10 strong lensing clusters, thereby more than doubling the existing number of strong lensing concentration estimates. We fit a power law to the observed concentrations as a function of virial mass, and find that the slope is consistent with the slopes found in simulations, though our normalization factor is higher. Observed lensing concentrations appear to be systematically larger than X-ray concentrations, a more pronounced effect than found in simulations. We also find that at fixed mass, the bulk of observed cluster concentrations are distributed log-normally, with the exception of a few anomalously high concentration clusters. We examine the physical processes likely responsible for the discrepancy between lensing and X-ray concentrations, and for the anomalously high concentrations in particular. The forthcoming Millennium simulation results will offer the most comprehensive comparison set to our findings of an observed concentration-mass power law relation.
description: 12 pages, 7 figures, submitted to MNRAS
Análise das mudanças sazonais da paisagem através das planícies de inundação na Bacia Hidrográfica do Rio São João
Creators: name: Beatriz Costa de Jesus
name: and others
Publisher: name: Zenodo
Year: 2023

description: R E S U M OO estudo da paisagem, dentro de uma perspectiva Geossistêmica, se torna indispensável em áreas que apresentam grande dinamismo, pois permite a compreensão dos processos e eventos que ocorrem em razão da inter-relação entre os elementos e componentes da paisagem. A Bacia Hidrográfica do Rio São João (BHRSJ) se encontra inserida em uma dessas áreas de grande dinamismo, pois nela é possível encontrar algumas variedades de ambientes e ecossistemas, além das áreas úmidas (Wetlands) que são consideradas como sistemas permanentes ou provisoriamente saturadas. Assim, o presente trabalho pretende analisar através de imagens de radar (Sentinel 1) e utilizando a plataforma do Google Earth Engine (GEE) as mudanças de estado da paisagem pelas estações de cheia e estiagem - essas classificadas como mudanças de média duração. Para tal, serão analisadas a dinâmica de inundação das planícies fluviais (áreas úmidas e/ou Wetlands) na BHRSJ em junho de 2020 e janeiro de 2021, visando entender as transformações ocorridas nesta paisagem. A metodologia acontecerá com a ajuda de técnicas de geoprocessamento e sensoriamento remoto, com o uso de um script no GEE.Palavras-Chaves: Áreas úmidas, GEE, Sentinel 1.
Multispin Giant Magnons
Creators: name: Bobev, N. P.
name: Rashkov, R. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate giant magnons from classical rotating strings in two different backgrounds. First we generalize the solution of Hofman and Maldacena and investigate new magnon excitations of a spin chain which are dual to a string on $R\times S^5$ with two non-vanishing angular momenta. Alowing string dynamics along the third angle in the five sphere, we find a dispersion relation that reproduces the Hofman and Maldacena and the one found by Dorey for the two spin case. In the second part of the paper we generalize the two "spin" giant magnon to the case of $\b$-deformed $\axs$ background. We find agreement between the dispersion relation of the rotating string and the proposed dispersion relation of the magnon bound state on the spin chain.
description: 16 pages, typos corrected, more comments included
Feasibility study for 100% renewable energy microgrids with medium-sized wind turbines in Switzerland
Creators: name: Barber, Sarah
name: Boller, Simon
name: Nordborg, Henrik
Publisher: name: Zenodo
Year: 2019
Subjects: Wind energy
Microgrids
Renewable energy
Community energy

description: The growing worldwide levels of renewable power generation require innovative solutions to maintain grid reliability and stability, due to their variability and uncertainty. The implementation of microgrids in small regions can help with these challenges, by intelligently storing or releasing electricity to the grid, depending on the loads and the grid requirements at any specific time. Renewable microgrids are also good solutions for regions wishing to produce green electricity independently from the grid, saving potentially high cable laying and grid connection costs. Switzerland does not yet have a large number of installed wind turbines (0.2% penetration level in 2016), and despite the ambitious Energy Strategy 2050, not a single wind turbine was installed in 2018. This lack of progress is mainly due to large delays, costs and risks associated with the permitting procedure for wind turbines higher than 30 m. Whilst wind turbines lower than 30 m require a much easier permitting procedure, they are less economically viable than large wind turbines, generally having average installed costs of about 4,400 $/kW compared to 1,400 $/kW for MW-size wind turbines. The implementation of renewable microgrids consisting of small wind turbines below 30 m, photovoltaic panels and a storage system may be a potential solution to help Switzerland to reach the goals of the Energy Strategy 2050. In this work, twelve sites in Switzerland were chosen for a 100% renewable energy microgrid feasibility study. Five of these sites were found to be economically viable, assuming that organisations / municipalities are prepared to make extra investments up to 0.2 $/kWh for electricity independence. The Self-Sufficiency Ratio (SSR) was between 1 and 2 for each site, reflecting the extra installed capacity required in order to fully cover every hour of demand (island operation). Reduced battery costs (up to 50%) reduce COE (up to 11%) but reduce SSR only minimally (<1%). Reduced wind turbine costs (up to 75%) reduce COE (up to 46%) but increase SSR (up to 30%). Reduced PV costs (up to 33%) reduce COE (up to 66%) but increases SSR (up to 81%). However, the implementation of 100% renewable energy microgrids is strongly limited by the area required / available. Furthermore, a suitable solution was found for a High Performance Computing Centre test site in Canton Glarus. The next step is to look at some real test cases with real costs and wind measurements.
Electromagnetic response in spiral magnets and emergent inductance
Creators: name: Kurebayashi, Daichi
name: Nagaosa, Naoto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Emergent electromagnetism in magnets originates from the strong coupling between conduction electron spins and those of noncollinear ordered moments and the consequent Berry phase. This offers possibilities to develop new functions of quantum transport and optical responses. The emergent inductance in spiral magnets is an example recently proposed and experimentally demonstrated, used the emergent electric field induced by alternating currents. However, the microscopic theory of this phenomenon is missing, which should reveal the factors to determine the magnitude, sign, frequency dependence, and nonlinearity of the inductance L. Here we theoretically study electromagnetic responses of spiral magnets taking into account their collective modes. In sharp contrast to the collinear spin-density wave, the system remains metallic even in one-dimension, and the canonical conjugate relation of uniform magnetization and phason coordinate plays an essential role, determining the properties of L. This result opens a way to design the emergent inductance of desired properties.
description: 18 pages, 5 figures
A Generalization of the Sugeno integral to aggregate Interval-valued data: an application to Brain Computer Interface and Social Network Analysis
Creators: name: Fumanal-Idocin, Javier
name: Takac, Zdenko
name: Horanska, Lubomira
name: Asmus, Thiago da Cruz
name: Vidaurre, Carmen
name: Dimuro, Graçaliz
name: Fernandez, Javier
name: Bustince, Humberto
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Intervals are a popular way to represent the uncertainty related to data, in which we express the vagueness of each observation as the width of the interval. However, when using intervals for this purpose, we need to use the appropriate set of mathematical tools to work with. This can be problematic due to the scarcity and complexity of interval-valued functions in comparison with the numerical ones. In this work, we propose to extend a generalization of the Sugeno integral to work with interval-valued data. Then, we use this integral to aggregate interval-valued data in two different settings: first, we study the use of intervals in a brain-computer interface; secondly, we study how to construct interval-valued relationships in a social network, and how to aggregate their information. Our results show that interval-valued data can effectively model some of the uncertainty and coalitions of the data in both cases. For the case of brain-computer interface, we found that our results surpassed the results of other interval-valued functions.
D8.1 SteamDry IT concept
Creators: name: Nölle, Christoph
name: Dunayvitser, Alexander
name: Wolff, Andreas
name: Siilasto, Roope
name: Keränen, Janne
name: Boon, Floor
name: Jentsch, Reinhard
name: Arias Calvo, Ana
Publisher: name: Zenodo
Year: 2024

description: The SteamDry project will develop and pilot superheated steam drying technologies for web-like materials such as paper, board, tissue, and nonwovens, aiming at a significant reduction in the CO2 footprint of the paper and pulp industry. As part of this endeavour, a set of simulation models for various parts of the drying process will be developed, and advanced control concepts will be implemented and tested in a set of laboratory-scale piloting trials.The present document lays down the preliminary IT concept for the modelling activities, the automation and control approach, and the monitoring and evaluation of the lab trials. Furthermore, it provides a selected overview of similar IT concepts from past European research projects and other relevant standardisation activities, thus establishing the state of the art as a basis for the SteamDry project.
As universidades estaduais baianas no contexto da educação superior pública do Brasil
Creators: name: Mota Júnior, Antônio de Macêdo
Publisher: name: figshare
Year: 2021
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: A presente pesquisa exploratória, bibliográfica e documental se propõe a demonstrar a importância das Universidades Estaduais Baianas (UEBAs) para o desenvolvimento socioeconômico do Estado da Bahia e sua relevância no contexto da educação superior no Brasil. Visa, ainda, descrever um breve histórico da origem e expansão da oferta de ensino superior público no Brasil, bem como da origem das UEBAs.
Covering spaces and the Kakimizu complex
Creators: name: Schultens, Jennifer
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25

description: In 1992, Osamu Kakimizu defined a complex that has become known as the Kakimizu complex of a knot. Vertices correspond to isotopy classes of minimal genus Seifert surfaces of the knot. Higher dimensional simplices correspond to collections of such classes of Seifert surfaces that admit disjoint representatives. We show that this complex is simply connected.
description: 16 pages, 10 figures
The Antiferromagnetic Character of the Quantum Phase Transition in the Hubbard Model on the Honeycomb Lattice
Creators: name: Ostmeyer, Johann
name: Berkowitz, Evan
name: Krieg, Stefan
name: Lähde, Timo A.
name: Luu, Thomas
name: Urbach, Carsten
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We provide a unified, comprehensive treatment of all operators that contribute to the anti-ferromagnetic, ferromagnetic, and charge-density-wave structure factors and order parameters of the hexagonal Hubbard Model. We use the Hybrid Monte Carlo algorithm to perform a systematic, carefully controlled analysis in the temporal Trotter error and of the thermodynamic limit. We expect our findings to improve the consistency of Monte Carlo determinations of critical exponents. We perform a data collapse analysis and determine the critical exponent $β=0.898(37)$ for the semimetal-Mott insulator transition in the hexagonal Hubbard Model. Our methods are applicable to a wide range of lattice theories of strongly correlated electrons.
Ausgeflippt?! Vorlesung als Flipped Classroom: Mehr als eine Notlösung
Creators: name: Wuttke, Ulrike
Publisher: name: Zenodo
Year: 2021
Subjects: Flipped Classroom
Elearning
LIS
Blended Learning

description: Präsentation für den Dini Workshop „Mit Abstand mehr gelernt? Konsequenzen für die Lehr- und Lernraumplanung” (19.02.2021): https://dini.de/veranstaltungen/workshops/mit-abstand-mehr-gelernt-konsequenzen-fuer-die-lehr-und-lernraumplanung/programm/
Destabilization of black holes and stars by generalized Proca fields
Creators: name: Garcia-Saenz, Sebastian
name: Held, Aaron
name: Zhang, Jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate that black holes and stars in general relativity can be destabilized by perturbations of non-minimally coupled vector fields. Focusing on static and spherically symmetric backgrounds, our analysis shows that black holes with sufficiently small mass and stars with sufficiently high densities are subject to ghost or gradient-type instabilities. This holds for a large class of vector-tensor theories whenever non-minimal couplings contribute to linearized dynamics about a state with vanishing vector field and applies to generalized Proca models that have sparked attention for their potential role in cosmology and astrophysics. The stability criteria translate into bounds of relevance for low-scale theories of dark energy and for ultra-light dark matter scenarios.
description: main text has been updated to agree with the published version
Zero-Forcing Precoding for Frequency Selective MIMO Channels with $H^\infty$ Criterion and Causality Constraint
Creators: name: Wahls, Sander
name: Boche, Holger
name: Pohl, Volker
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider zero-forcing equalization of frequency selective MIMO channels by causal and linear time-invariant precoders in the presence of intersymbol interference. Our motivation is twofold. First, we are concerned with the optimal performance of causal precoders from a worst case point of view. Therefore we construct an optimal causal precoder, whereas contrary to other works our construction is not limited to finite or rational impulse responses. Moreover we derive a novel numerical approach to computation of the optimal perfomance index achievable by causal precoders for given channels. This quantity is important in the numerical determination of optimal precoders.
description: Minor Revisions, mainly in introduction and problem statement. Submitted to Signal Processing
Quantum Weyl-Heisenberg antiferromagnet
Creators: name: Rosenberg, Peter
name: Manousakis, Efstratios
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Beginning from the conventional square-lattice nearest-neighbor antiferromagnetic Heisenberg model, we allow the $J_x$ and $J_y$ couplings to be anisotropic, with their values depending on the bond orientation. The emergence of anisotropic, bond-dependent, couplings should be expected to occur naturally in most antiferromagnetic compounds which undergo structural transitions that reduce the point-group symmetry at lower temperature. Using the spin-wave approximation, we study the model in several parameter regimes by diagonalizing the reduced Hamiltonian exactly, and computing the edge spectrum and Berry connection vector, which show clear evidence of localized topological charges. We discover phases that exhibit Weyl-type spin-wave dispersion, characterized by pairs of degenerate points and edge states, as well as phases supporting lines of degeneracy. We also identify a parameter regime in which there is an exotic state hosting gapless linear spin-wave dispersions with different longitudinal and transverse spin-wave velocities.
 Author email info: prosenberg15@gmail.com and manousakis@gmail.com
description: 8 two-column latex pages 9 figures