cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Floatech D5.2 Report on the LCOE improvement of AWM controlled floating wind farms
Creators: name: Coiro, Domenico P.
name: Troise, Giancarlo
name: Lazzerini, Guido
name: Grieco, Adolfo
name: Papi, Francesco
name: Bianchini, Alessandro
name: van den Berg, Daniel
Publisher: name: Zenodo
Year: 2023
Subjects: LCOE estimation
Floating wind turbines

description: This document reports a part of the results of Work Package 5 of the Floatech project (Optimization of floating wind turbines using innovative control techniques and fully coupled open-source engineering tool). The main goal of WP 5 is the estimation of the impact of the newly developed control technologies on the economic performance of a floating offshore wind turbine (FOWT). Specifically, WP 5 has investigated the effects on the overall component costs due to the introduction of two new control strategies: Active Wave Control (AWC), related to the feed-froward control methodology developed in WP 3 of Floatech project, and Active Wake Mixing (AWM), related to the wake mixing control strategy developed in WP 4. Two different tasks are dedicated to the analysis of the new control strategies: Task 5.1, dedicated to the study of AWC, and Task 5.2 dedicated to AWM. In order to investigate the economic effects of the implementation of the new controls, a cost model, parametrized on the main geometrical and performance data of the FOWT, has been developed. This report is specifically related to the economic assessment of the AWM control strategy. The current study exploits the results of a set of simulations performed using the software QBlade (developed by TU Berlin) in order to estimate the loads on the main FOWT components and the effect of the control on power production performance. The methodology used to estimate the possible improvements due to the newly introduced control technology is based on a hybrid approach: on one hand, some cost contributions will be estimated using expressions based on statistical regression, derived from literature, while, on the other hand, the costs of the FOWT components mainly affected by the control variation will be estimated using a simplified preliminary design calculation, in order to evaluate possible changes in design parameters due to the predicted load variations. In the process of LCOE estimation, possible changes in the Annual Energy Production (AEP) need also to be accounted for. The results of the study are presented in terms of variation of the LCOE between a reference case and a modified design including the AWM control technology, using the control strategy designated as Helix, developed by TU Delft.
Towards the adoption of model-based engineering for the development of safety-critical systems in industrial practice
Creators: name: Zeller, Marc
name: Ratiu, Daniel
name: Hoefig, Kai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Model-based engineering promises to boost productivity and quality of complex systems development. In the context of safety-critical systems, a traditionally highly regulated and conservative domain, the use of models gained importance in the recent years. In this paper, we present a set of practical challenges in developing safety-critical systems with the help of several examples of development projects that belong to different application domains. Following this, we show how could the adoption of model-based engineering for the development of safety-critical systems cope with these challenges.
Collective spin and charge excitations in the $t$-$J$-$U$ model of high-$T_c$ cuprates
Creators: name: Fidrysiak, Maciej
name: Goc-Jagło, Danuta
name: Spałek, Józef
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The $t$-$J$-$U$ model of high-$T_c$ copper-oxide superconductors incorporates both the on-site Coulomb repulsion and kinetic exchange interaction and yields a semi-quantitative description of the static properties of those materials. We extend this analysis to dynamic quantities and address collective spin- and charge excitations in the correlated metallic state of the $t$-$J$-$U$ model. We employ VWF+$1/\mathcal{N}_f$ approach that combines the variational wave function (VWF) approach with the expansion in the inverse number of fermionic flavors ($1/\mathcal{N}_f$). It is shown that the resonant (paramagnon) contribution to the dynamic magnetic susceptibility remains robust as one interpolates between the Hubbard- and $t$-$J$-model limits, whereas the incoherent continuum undergoes substantial renormalization. Energy of the collective charge mode diminishes as the strong-coupling limit is approached. We also introduce the concept of effective kinetic exchange interaction that allows for a unified interpretation of magnetic dynamics in the Hubbard, $t$-$J$, and $t$-$J$-$U$ models. The results are discussed in the context of recent resonant inelastic $x$-ray scattering experiments for the high-$T_c$ cuprates.
Slides for Webinar: Building a Working Group: IoT for Smart Cities
Creators: Rebecca Hammons
Publisher: name: IEEE
Year: 2019

Slides for Webinar: Building a Working Group: IoT for Smart Cities
The Internet of Things (IoT) is a fast- moving and expansive domain with an evolving introduction of new technologies, products and services world-wide.  Considerable empahsis is being placed on optimizing IoT for inclusion in Smart Cities by manufactuers, city-planners, and IEEE Socities to accommodate the population shift to urban areas in a sustainabile way.

The IEEE IoT Consortium's Smart Cities Working Group, formed in 2018, is focused on identifying key aspects of IoT that will benefit from standardization to benefit urban planners and the people who inhabit communities.
Slides for Webinar: Simulation & By-Wire Vehicle Testing
Creators: Jeff Blackburn
Publisher: name: IEEE
Year: 2020

Slides for Webinar: Simulation & By-Wire Vehicle Testing
Simulation involves a simplification or approximation of the real world, therefore physical testing using by-wire research platforms must also be performed to gain confidence in autonomous vehicle (AV) operation. Physical testing serves two purposes; real-world verification that our AV software is working as intended and a continuing check to ensure that all relevant aspects of the physical phenomenon being tested have not been missed, and that predicted simulation results remain plausible. A coordination of both forms of testing must be our guidance going forward when developing AV hardware and software.
Slides for Webinar: Blockchain for Project Managers for Smart Cities
Creators: Ignacio Varese and  Gustavo Giannattasio
Publisher: name: IEEE
Year: 2019

Slides for Webinar: Blockchain for Project Managers for Smart Cities
Blockchain is one of the new disrupting technologies nowadays. Blockchain started with Bitcoin, the first cryptocurrency. Bitcoin is digital money that is transmitted through Internet without intermediaries and is based in cryptography.  Blockchain is the technology that allow peer to peer transactions without intermediaries, a distributed network to transmit value. The technology behind Bitcoin is Blockchain, and Blockchain is more than Bitcoin, Blockchain is business solution. We have many uses cases that use Blockchain solutions in Organizations in all industries. Blockchain came to stay, and we have to stay updated. Project managers have lots of opportunities, many Blockchain projects are coming and they have to know how its work. In the webinar we are going to do an introduction of blockchain, explaining why Blockchain is a revolution, I will show some uses cases and project managers opportunities, challenges and risk that they have.
Slides for Webinar: Illuminating the need for establishing smart urban infrastructures
Creators: Mehdi Ganji
Publisher: name: IEEE
Year: 2019

Slides for Webinar: Illuminating the need for establishing smart urban infrastructures
This webinar will discuss how a smart city is an urban center that integrates a variety of innovative solutions to improve infrastructural performances and achieve a sustainable urban development. The urban infrastructures in many cities suffer from a series of critical issues, including capacity insufficiency, functional deterioration and deferred maintenance, and technological obsolescence that place legacy infrastructures unprepared for providing better civil services and promoting a higher quality of life and socioeconomic competitiveness. In the future, the authors explain, a significant increase in urban population will place massive pressure on constrained city infrastructures (e.g., public and private transportation and mobility), pose various types of concerns for peoplesÕ lives, and, potentially, lead to significant economic losses and lack of preparedness in critical and disastrous circumstances. The adoption of smart city solutions represents a key factor in the consumption of resources for improving the efficiency of services and meeting individual citizensÕ needs as urban populations grow and resources become scarcer
A mu-differentiable Lagrange multiplier rule
Creators: name: Almeida, Ricardo
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26E35; 26E05; 26B05

description: We present some properties of the gradient of a mu-differentiable function. The Method of Lagrange Multipliers for mu-differentiable functions is then exemplified.
description: Accepted (22/June/2008) for International Journal of Mathematics and Statistics (IJMS), Vol. 4, No. S09, Spring 2009 (in press)
The BIAS FREE Framework: A practical tool for identifying and eliminating social biases in health research
Creators: name: Burke, Mary Anne
name: Eichler, Margrit
Publisher: name: Global Forum for Health Research
Year: 2006

description: English | Français

Breaking the Bias Barrier: Transform Health Research and Practice

A powerful analytical tool to uncover and eliminate inequities

What if health systems could truly serve everyone equally? The BIAS FREE Framework offers a powerful approach to identify and address hidden biases in health research, policy development, and service delivery.

Developed by Mary-Anne Burke and Margrit Eichler, this tool helps professionals systematically analyze how social hierarchies shape health outcomes through three key bias patterns: Maintaining Hierarchy (H), Failing to Examine Differences (F), and Using Double Standards (D).

Unlike single-focus approaches that examine only gender or race or disability in isolation, the BIAS FREE Framework tackles the complex reality of intersecting inequities. It provides practical, step-by-step guidance for researchers, healthcare providers, policy makers, and program managers to:

Uncover hidden biases in methodologies, language, and assumptions

Design more inclusive research that produces valid results for all groups

Create policies that reach historically marginalized populations

Develop health programs that serve diverse communities effectively

The BIAS FREE tool is powerful because it works across all types of differences - not just one. Many tools only look at gender or only at disability or only at tribal differences. The BIAS FREE tool looks at all these together. The problems of unfair treatment follow similar patterns everywhere, even though the specific details may differ. This makes the BIAS FREE tool useful for everyone, everywhere. 

Because everyone deserves fair treatment in health systems—and lives depend on it.
การพัฒนาทิศทางงานวิจัยในองค์การโดยใช้เทคนิค ZOPP และ Force Field Analysis
Creators: name: ศุภลักษณ์ วัฒนาเฉลิมยศ , สวัสดิรักษ์ ใสงาม
Publisher: name: คณะสิ่งแวดล้อมและทรัพยากรศาสตร์
Year: 2557
Subjects: ZOPP,Force field analysis, ทิศทางงานวิจัย

description: 1, 1, วารสารการพัฒนางานประจำสู่งานวิจัย
Slides for Webinar:  Exploring the IEEE Smart City Planning and Technology  Standard P2784
Creators: Jim Frazer
Publisher: name: IEEE
Year: 2019

Slides for Webinar:  Exploring the IEEE Smart City Planning and Technology  Standard P2784
In this webinar, you will learn:
The human and societal user needs, applications and technologies that impact a Smart City
Current opportunities and challenges faced by Smart City advocates, implementation specialists, the general public and other stakeholder communities
The how to use the IEEE P2784 Smart City Planning and Technology Guide in envisioning, deploying and managing your Smart City Project in order to deliver a comprehensive sustainable solution.
Magnetic mechanism of quasiparticle pairing in hole-doped cuprate superconductors
Creators: name: Markiewicz, R. S.
name: Bansil, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have computed alpha^2F's for the hole-doped cuprates within the framework of the one-band Hubbard model, where the full magnetic response of the system is treated properly. The d-wave pairing weight alpha^2F_d is found to contain not only a low energy peak due to excitations near (pi,pi) expected from neutron scattering data, but to also display substantial spectral weight at higher energies due to contributions from other parts of the Brillouin zone as well as pairbreaking ferromagnetic excitations at low energies. The resulting solutions of the Eliashberg equations yield transition temperatures and gaps comparable to the experimentally observed values, suggesting that magnetic excitations of both high and low energies play an important role in providing the pairing glue in the cuprates.
description: To be published, PRB; 6 eps figures, revtex
The Development of Chinese Glass Buildings
Creators: name: Cui, G.
Publisher: name: Challenging Glass Conference Proceedings
Year: 2010

description: This paper introduces the development of Chinese glass building, discusses the problems in the development, and forecasts the future of glass building in China. There is a short but leap-forward development of Chinese glass buildings. The paper, which uses the methodology of history research, takes Beijing as an example to research the development of Chinese glass buildings. It divides the development into three stages: function stage, aesthetic stage, technology stage, and describes each stage with practical examples. It supports an objective analysis of the development with the context of culture, economy, society’s status and technology. Finally, the paper concludes the opportunities and challenges in current China, and proposes that the future of Chinese glass building is integrated design.
description: Challenging Glass Conference Proceedings, Vol. 2 (2010): Challenging Glass 2
Slides for Webinar: Smart Parking
Creators: Matt Willinbrink
Publisher: name: IEEE
Year: 2019

Slides for Webinar: Smart Parking
This webinar will discuss how transportation in urban areas is rapidly changingÑfacing increasing infrastructure pressures as populations in urban areas are on the rise. How do we manage more vehicles on the road, new technologies that change how people get from point A to B, and how to improve efficiencies Ð all while making streets safer with fewer emissions?  By leveraging intelligent parking solutions and data-driven policies, community planners can make significant changes to address a wide range of issues, such as traffic congestion, emissions, and curbside managementÑleading to safer, cleaner, and more efficient streets. This talk will address some of the intelligent parking solutions, the policies they drive with real-time data, and the benefits they can offer communities.
Representation of architecture (systematic and empirical analysis)
Creators: name: Kanetkar, Vinaykumar Vaman
Publisher: name: University of British Columbia
Year: 2010

description: Representation can be defined as a replication or reconstruction of a system which exists, has existed or is expected to exist. Furthermore, replication consists of a concept-expression derived by the selection by the observer(s) of system certain characteristics and has some stated and unstated rules about concept-expression. Concept-expression is accomplished via a medium by the observer(s) using suitable instruments. Given this definition of representation, it becomes possible to explore verbal notions about architectural system. Based on phenomenological and empirical work in "meaning in architecture", this study attempts to establish 24 notions such as form, scale and proportion, texture, spaciousness, organisation, complexity, modernity, pleasure. 78 empirical studies reported in English and conducted in the last decade gave insights into following four areas of the study. 1) To establish the information gap between the actual building and each of its representation on various architecture related notions. 2) To explicate the relationship between money and time required for representation and the information gap between environment and its representation. 3) To determine the extent to which observers can comprehend the representations in terms of the architectural notions. 4) To derive a classification of representation using notions related to architecture. This study used a space relation diagram, verbal description, plan and section, sketch drawing, isometric drawing, perspective drawing, black and white photograph, colour slide, architectural model and the actual building to represent the study building, Gaslight Square. The survey questionnaire, rating techniques, study field station and representational techniques were carefully constructed to fulfil the above purposes. Results based on 1400 sets of observations made by 185 respondents suggest that there can be an information gap between the actual building and its representation. Generally, the less abstract and more detailed the representation, the better are architectural notions conveyed. The value for the relationship (measured by Kendall's Tau) between the general impression conveyed by representation of the actual building and the cost of the representations was 0.78 and for the time required to prepare for representations was 0.5683. Analysis of variance suggested that observers were able to distinguish between the amount of information conveyed by various representations and and between architectural notions. Furthermore, the difference between architects and non-architects were statistically significant and there were recognizable differences between their reactions to representations. Overall similarity between all the representations, as indicated by cluster analysis was 40.6 Percent. Eye-level, overview and abstract were the three major categories derived from the 10 representations used in this study.
Slides for Webinar: The Important Player for Smart Cities:  Mobility and its Systems
Creators: Jianbu Lu
Publisher: name: IEEE
Year: 2019

Slides for Webinar: The Important Player for Smart Cities:  Mobility and its Systems
Smart Cities focus on creating better quality life for citizens by coping with urban problems such as traffic, pollution, energy consumption, water treatment, etc., and implementing the smart solutions. Smart Mobility is an inevitable contributor to Smart Cities, because of not only its relationship with traffic, but also its impact on several other dimensions of Smart Cities. Smart Mobility aims to provide intelligent means to move people and goods inter- or intra-cities. It intends to achieve the ultimate goal of zero fatality, zero injury, zero emission, zero carbon footprint, zero traffic congestion, and zero unnecessary energy waste. In this talk, we focus on some of the trends and examples on how to use technologies such as autonomous vehicles, artificial intelligence, transportation as a service to advance Smart Mobility, hence, to advance Smart Cities
Slides for Webinar: Resiliency Strategies in a challenging world
Creators: Gordon Feller
Publisher: name: IEEE
Year: 2020

Slides for Webinar: Resiliency Strategies in a challenging world
This webinar explores how smart cities and its associated innovations can be leveraged to respond to and recover from crises, including pandemics.

Among the key learning objectives of this webinar:

* Learn about the smart city ecosystem framework. Understand smart city outcomes, smart city value creators, and the components of this ecosystem.
* Learn about the smart city-public health emergency response and collaboration framework. Understand the key capabilities needed by cities to prepare for and respond to emergencies. Understand the areas of collaboration where smart cities technologies can augment these capabilities to respond to crises, including COVID-19.
* Understand the role of advanced technologies, including the use of IoT in responding to crises and events (e.g., pandemics). Understand IoT technology infrastructure gaps and opportunities.
* Learn about the current US Federal GovernmentÕs (NIST) study, focused on identifying the future of IoT.
Slides for Webinar: Exploring Electrical Energy Systems in Your Smart City
Creators: Rick Rys
Publisher: name: IEEE
Year: 2019

Slides for Webinar: Exploring Electrical Energy Systems in Your Smart City
This Webinar will discusses four main topics:
(1) What kind of electric grid do we want? Reliability, Cost, Sustainable, Smart, Security  (2) What are the current electric grid disruptions? Generation mix, grid stability & control, markets, regulations, technology trends (3) How have electric grids been changing? World & rural electrification, Micro/Nanogrids, energy storage, duck, dragon and shark curves, demand response (4) What will the future electric grid look like? Technology, markets mechanisms, environmental regulations
Slides for Webinar: Casablanca Update - The Importance of Local Regulation & Local Initiative
Creators: Aawatif Hayar and Adnane Founoun
Publisher: name: IEEE
Year: 2019

Slides for Webinar: Casablanca Update - The Importance of Local Regulation & Local Initiative
An assessment of smart cityÕs concept through the local regulation in Morocco. An evaluation framework is developed and presented. We underline and evaluate also the importance of direct and indirect citizensÕ involvement in the city transition to a smart city; as well as their investment and appropriation of the city transformation proces.
Slides for Webinar: Exploring Fleet Electrification in your Smart City
Creators: Eddie Fidler
Publisher: name: IEEE
Year: 2019

Slides for Webinar: Exploring Fleet Electrification in your Smart City
The presentation will explore electric vehicles, how they compare as well as the growing list of use cases where they are superior to internal combustion vehicles. The concept of total cost of ownership will be introduced and applied to demonstrate why vehicle fleets are going to steadily electrify in the coming years.
Jordan's Governance of Syrian Refugee Returns:  Policies and Challenges - WP4 Country Dossier
Creators: name: Istaiteyeh, Rasha
name: Al Malalha, Marah
name: Jaber, Rola
Publisher: name: GAPs: De-centring the Study of Migrant Returns and Readmission Policies in  Europe and Beyond
Year: 2025
Subjects: Jordan
Return governance
Syria
Readmission policies

description: The dossier provides a detailed analysis of the factors influencing Syrian refugee returns from  Jordan to Syria. While several areas of Syria, such as Damascus, Homs, and Southern Syria, have  seen improvements in security, other regions continue to experience instability. There are some barriers to return: like the sustained security hazards, destroyed infrastructure, dearth of job opportunities, and persecution risk in Syria developed as formidable deterrents against returning by the refugees. Most of them have been detained, extorted, or their property is confiscated upon return. This contributes to the complex decisions made by refugees regarding their return.

Many refugees in Jordan face high living costs, limited job opportunities, and competition for  resources, leading to a desire to return home. Despite efforts to issue working permits, many live below poverty, with low wages and job insecurity. Jordan bears a significant resource strain, with job, educational, and public service competition causing tensions in social relationships. Reduced international aid has further increased difficulties for Syrian refugees. 

Jordan is implementing return governance and return policies in collaboration with international organizations like the UNHCR. According to all international and local experts interviewed, the scale of return of Syrian refugees from Jordan to Syria remains modest, primarily occurring at an individual level rather than collective or group returns. Jordan's initiatives are about making return safer and providing essential services to help refugees reintegrate into their home country, with the hope of reducing refugee numbers in Jordan and helping Syria's recovery after the war. While Jordan officially presents the return of Syrian refugees as a voluntary process, the reality for many refugees is far more complex. Jordan’s approach has been more prudent, offering options like visitor permits, reintegration support, and assistance for temporary returns, but these policies haven’t created strong incentives to lead to large-scale return. While Jordan’s governance of refugee return has involved navigating complex diplomatic and security considerations, it remains heavily dependent on the willingness of donors to fund the stabilization of Syria and create conditions for return. Similarly, Jordan’s role as a regional actor in coordinating refugee return has been a balancing act, managing the diverse interests of Syria, neighboring host countries, and international donors.
Lattice QCD study of the heavy-heavy-light quark potential
Creators: name: Yamamoto, Arata
name: Suganuma, Hideo
name: Iida, Hideaki
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study the heavy-heavy-light quark ($QQq$) potential in SU(3) quenched lattice QCD, and discuss one of the roles of the finite-mass valence quark in the inter-quark potential. Monte Carlo simulations are performed with the standard gauge action on the $16^4$ lattice at $β=6.0$ and the $O(a)$-improved Wilson fermion action at four hopping parameters. For statistical improvement, the gauge configuration is fixed with the Coulomb gauge. We calculate the potential energy of $QQq$ systems as a function of the inter-heavy-quark distance $R$ in the range of $R \le$ 0.8 fm. The $QQq$ potential is well described with a Coulomb plus linear potential, and the effective string tension between the two heavy quarks is significantly smaller than the string tension $σ\simeq 0.89$ GeV/fm. It would generally hold that the effect of the finite-mass valence quark reduces the inter-two-quark confinement force in baryons.
Jordan's Governance of Syrian Refugee Returns:  Policies and Challenges - WP4 Country Dossier
Creators: name: Istaiteyeh, Rasha
name: Al Malalha, Marah
name: Jaber, Rola
Publisher: name: GAPs: De-centring the Study of Migrant Returns and Readmission Policies in  Europe and Beyond
Year: 2025
Subjects: Jordan
Return governance
Syria
Readmission policies

description: The dossier provides a detailed analysis of the factors influencing Syrian refugee returns from  Jordan to Syria. While several areas of Syria, such as Damascus, Homs, and Southern Syria, have  seen improvements in security, other regions continue to experience instability. There are some barriers to return: like the sustained security hazards, destroyed infrastructure, dearth of job opportunities, and persecution risk in Syria developed as formidable deterrents against returning by the refugees. Most of them have been detained, extorted, or their property is confiscated upon return. This contributes to the complex decisions made by refugees regarding their return.

Many refugees in Jordan face high living costs, limited job opportunities, and competition for  resources, leading to a desire to return home. Despite efforts to issue working permits, many live below poverty, with low wages and job insecurity. Jordan bears a significant resource strain, with job, educational, and public service competition causing tensions in social relationships. Reduced international aid has further increased difficulties for Syrian refugees. 

Jordan is implementing return governance and return policies in collaboration with international organizations like the UNHCR. According to all international and local experts interviewed, the scale of return of Syrian refugees from Jordan to Syria remains modest, primarily occurring at an individual level rather than collective or group returns. Jordan's initiatives are about making return safer and providing essential services to help refugees reintegrate into their home country, with the hope of reducing refugee numbers in Jordan and helping Syria's recovery after the war. While Jordan officially presents the return of Syrian refugees as a voluntary process, the reality for many refugees is far more complex. Indirect coercion, in the form of economic hardships, legal restrictions, and subtle pressures from both the government and international partners, may make "spontaneous returns" seem like the only option for many Syrians. Jordan’s approach has been more passive, offering options like visitor permits, limited reintegration support, and assistance for temporary returns, but these policies haven’t created strong incentives to lead to large-scale return. While Jordan’s governance of refugee return has involved navigating complex diplomatic and security considerations, it remains heavily dependent on the willingness of donors to fund the stabilization of Syria and create conditions for return. Similarly, Jordan’s role as a regional actor in coordinating refugee return has been a balancing act, managing the diverse interests of Syria, neighboring host countries, and international donors.
An N=2 worldsheet approach to D-branes in bihermitian geometries: I. Chiral and twisted chiral fields
Creators: name: Sevrin, Alexander
name: Staessens, Wieland
name: Wijns, Alexander
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate N=(2,2) supersymmetric nonlinear sigma-models in the presence of a boundary. We restrict our attention to the case where the bulk geometry is described by chiral and twisted chiral superfields corresponding to a bihermitian bulk geometry with two commuting complex structures. The D-brane configurations preserving an N=2 worldsheet supersymmetry are identified. Duality transformations interchanging chiral for twisted chiral fields and vice versa while preserving all supersymmetries are explicitly constructed. We illustrate our results with various explicit examples such as the WZW-model on the Hopf surface S3xS1. The duality transformations provide e.g new examples of coisotropic A-branes on Kahler manifolds (which are not necessarily hyper-Kahler). Finally, by dualizing a chiral and a twisted chiral field to a semi-chiral multiplet, we initiate the study of D-branes in bihermitian geometries where the cokernel of the commutator of the complex structures is non-empty.
description: LaTeX, 50 pages
Slides for Webinar: A Distributed Traffic Management System for End-to-End Dynamic Routing of Intelligent Vehicles
Creators: Bilal Farooq
Publisher: name: IEEE
Year: 2019

Slides for Webinar: A Distributed Traffic Management System for End-to-End Dynamic Routing of Intelligent Vehicles
This webinar will discuss a proposed distributed dynamic routing system that can route the intelligent vehicles from origin to destination in dense urban areas, with the aim to optimize the network usage while minimizing the individual travel times. The proposed distributed control system generates and frequently updates a single integrated and coherent view of the network state, independent of market penetration rate and vehicle communication characteristics. The performance of the routing system is compared to a dynamic pre-trip shortest path routing in the downtown Toronto under recurrent and non-recurrent congestion conditions. Results show that the proposed routing system can reach near social optimal state, by having 56% higher throughput rate while reducing the average travel time by 40%. The proposed system manages the incidents better (15% lower travel time) and at the same time minimizes its effects on the network.
Imom at-Termiziy hazratlarining madaniy merosi
Creators: name: T.Xamroyev, Toshkent axborot texnologiyalari universiteti  Samarqand filiali TTKT fakulteti 23-01guruh talabasi
Publisher: name: Zenodo
Year: 2023

description: ushbu  maqolada  Imom  at-Termiziy  hazratlarining  hayoti,  qay darajada  yetuk  inson  ekanligi,  ta’lim  olgan  madrasalari,  ibratli  hayot  yo’llari, islom dini olamida tutgan o’rni haqida  bayon etiladi
Quantum control and manipulation of donor electrons in Si-based quantum computing
Creators: name: Calderon, M. J.
name: Saraiva, A.
name: Koiller, B.
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Doped Si is a promising candidate for quantum computing due to its scalability properties, long spin coherence times, and the astonishing progress on Si technology and miniaturization in the last few decades. This proposal for a quantum computer ultimately relies on the quantum control of electrons bound to donors near a Si/barrier (e.g. SiO2) interface. We address here several important issues and define critical parameters that establish the conditions that allow the manipulation of donor electrons in Si by means of external electric and magnetic fields.
description: Invited Presentation at the 29th International Conference on the Physics of Semiconductors, Rio de Janeiro - Brazil, Jul 27-Aug 1, 2008. A paragraph added to the conclusions, 4 new references
On the cyclic automorphism of the Cuntz algebra and its fixed-point algebra
Creators: name: Aiello, Valeriano
name: Rossi, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: We investigate the structure of the fixed-point algebra of $\mathcal{O}_n$ under the action of the cyclic permutation of the generating isometries. We prove that it is $*$-isomorphic with $\mathcal{O}_n$, thus generalizing a result of Choi and Latrémolière on $\mathcal{O}_2$. As an application of the technique employed, we also describe the fixed-point algebra of $\mathcal{O}_{2n}$ under the exchange automorphism.
description: Accepted for publication in J. Math. Anal. Appl
Molecules and dust production in the Magellanic Clouds
Creators: name: van Loon, Jacco Th.
name: Cohen, Martin
name: Oliveira, Joana M.
name: Matsuura, Mikako
name: McDonald, Iain
name: Sloan, Gregory C.
name: Wood, Peter R.
name: Zijlstra, Albert A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present ESO/VLT spectra in the 2.9-4.1 micron range for a large sample of infrared stars in the Small Magellanic Cloud (SMC), mainly carbon stars, massive oxygen-rich Asymptotic Giant Branch (AGB) stars, and red supergiants. Strong emission from Polycyclic Aromatic Hydrocarbons (PAHs) is detected in the spectrum of the post-AGB object MSX SMC 29. Water ice is detected in at least one Young Stellar Object, IRAS 01042-7215, for the first time in the SMC. The strength and shapes of the molecular bands detected in the evolved stars are compared with similar data for stars in the Large Magellanic Cloud (LMC). Absorption from acetylene in carbon stars is found to be equally strong in the SMC as in the LMC, but the LMC stars show stronger dust emission in their infrared colours and veiling of the molecular bands. This suggests that a critical link exists in the formation of dust from the molecular atmosphere in carbon stars which scales with the initial metallicity. Nucleation seeds based on a secondary element such as titanium or silicon provide a plausible explanation. In oxygen-rich stars, both the nucleation seeds and molecular condensates depend on secondary elements (in particular titanium, silicon, and/or aluminium). Data for pulsating dusty AGB stars and supergiants in the LMC are used to show that pulsation is likely the critical factor in driving mass loss, as long as dust forms, rather than the stellar luminosity. Finally, we suggest that the reduced dust production and consequently slower winds of metal-poor AGB stars and red supergiants are more likely to result in chemical inhomogeneities and small-scale structure in the interstellar medium. (abridged)
description: Accepted for publication in Astronomy and Astrophysics
Analytic exposition of the graviton modes in fractional quantum Hall effects and its physical implications
Creators: name: Wang, Yuzhu
name: Yang, Bo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Neutral excitations in a fractional quantum Hall droplet define the incompressibility gap of the topological phase. In this work, we derived a set of analytical results for the energy gap of the graviton modes with two-body and three-body Hamiltonians in both the long-wavelength and thermodynamic limit. These allow us to construct model Hamiltonians for the graviton modes in different FQH phases, and to elucidate a hierarchical structure of conformal Hilbert spaces (nullspaces of model Hamiltonians) with respect to the graviton modes and their corresponding ground states. Using the analytical tools developed, we perform numerical analysis with a particular focus on the Laughlin $ν= 1/5$ and the Gaffnian $ν= 2/5$ phases. Our calculation shows that for gapped phases, low-lying neutral excitations can undergo a "phase transition" even when the ground state is invariant. We discuss the compressibility of the Gaffnian phase, the possibility of multiple graviton modes, and the transition from the graviton modes to the "hollow-core" modes, as well as their experimental consequences.
description: 36 pages, 8 figures
Convolutional Deep Denoising Autoencoders for Radio Astronomical Images
Creators: name: Gheller, Claudio
name: Vazza, Franco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We apply a Machine Learning technique known as Convolutional Denoising Autoencoder to denoise synthetic images of state-of-the-art radio telescopes, with the goal of detecting the faint, diffused radio sources predicted to characterise the radio cosmic web. In our application, denoising is intended to address both the reduction of random instrumental noise and the minimisation of additional spurious artefacts like the sidelobes, resulting from the aperture synthesis technique. The effectiveness and the accuracy of the method are analysed for different kinds of corrupted input images, together with its computational performance. Specific attention has been devoted to create realistic mock observations for the training, exploiting the outcomes of cosmological numerical simulations, to generate images corresponding to LOFAR HBA 8 hours observations at 150 MHz. Our autoencoder can effectively denoise complex images identifying and extracting faint objects at the limits of the instrumental sensitivity. The method can efficiently scale on large datasets, exploiting high performance computing solutions, in a fully automated way (i.e. no human supervision is required after training). It can accurately perform image segmentation, identifying low brightness outskirts of diffused sources, proving to be a viable solution for detecting challenging extended objects hidden in noisy radio observations.
description: 21 pages, 14 figures, Accepted for publication by MNRAS
Failure of Local Realism Revealed by Extremely Coarse-Grained Measurements
Creators: name: Jeong, H.
name: Paternostro, M.
name: Ralph, T. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that failure of local realism can be revealed to observers for whom only extremely coarse-grained measurements are available. In our instances, Bell's inequality is violated even up to the maximum limit while both the local measurements and the initial local states under scrutiny approach the classical limit. Furthermore, we can observe failure of local realism when an inequality enforced by non-local realistic theories is satisfied. This suggests that locality alone may be violated while realism cannot be excluded for specific observables and states. Small-scale experimental demonstration of our examples may be possible in the foreseeable future.
description: 4 pages, 3 figures, RevTeX4
Normal numbers from Steinhaus viewpoint
Creators: name: Pellegrino, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 60A10, 11K16

description: In this paper we recall a non-standard construction of the Borel sigma-algebra B in [0,1] and construct a family of measures (in particular, Lebesgue measure) in B by a completely non-topological method. This approach, that goes back to Steinhaus, in 1923, is now used to introduce natural generalizations of the concept of normal numbers and explore their intrinsic probabilistic properties. We show that, in virtually all the cases, almost all real number in [0,1] is normal (with respect to this generalized concept). This procedure highlights some apparently hidden but interesting features of the Borel sigma-algebra and Lebesgue measure in [0,1].
description: 11 pages
Nonlinear Instability of kink oscillations due to shear motions
Creators: name: Terradas, J.
name: Andries, J.
name: Goossens, M.
name: Arregui, I.
name: Oliver, R.
name: Ballester, J. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: First results from a high-resolution three-dimensional nonlinear numerical study of the kink oscillation are presented. We show in detail the development of a shear instability in an untwisted line-tied magnetic flux tube. The instability produces significant deformations of the tube boundary. An extended transition layer may naturally evolve as a result of the shear instability at a sharp transition between the flux tube and the external medium. We also discuss the possible effects of the instability on the process of resonant absorption when an inhomogeneous layer is included in the model. One of the implications of these results is that the azimuthal component of the magnetic field of a stable flux tube in the solar corona, needed to prevent the shear instability, is probably constrained to be in a very specific range.
The N = 1 Triplet Vertex Operator Superalgebras: Twisted Sector
Creators: name: Adamovic, Drazen
name: Milas, Antun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We classify irreducible $σ$-twisted modules for the N=1 super triplet vertex operator superalgebra $\mathcal{SW}(m)$ introduced recently [Adamovic D., Milas A., Comm. Math. Phys., to appear, arXiv:0712.0379]. Irreducible graded dimensions of $σ$-twisted modules are also determined. These results, combined with our previous work in the untwisted case, show that the $SL(2,\mathbb{Z})$-closure of the space spanned by irreducible characters, irreducible supercharacters and $σ$-twisted irreducible characters is $(9m+3)$-dimensional. We present strong evidence that this is also the (full) space of generalized characters for $\mathcal{SW}(m)$. We are also able to relate irreducible $\mathcal{SW}(m)$ characters to characters for the triplet vertex algebra $\mathcal{W}(2m+1)$, studied in [Adamovic D., Milas A., Adv. Math. 217 (2008), 2664-2699, arXiv:0707.1857].
description: This is a contribution to the Special Issue on Kac-Moody Algebras and Applications, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Fourier modal method for Moiré lattices
Creators: name: Karmanova, Natalia S.
name: Fradkin, Ilia M.
name: Dyakov, Sergey A.
name: Gippius, Nikolay A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In recent years twisted bi-layers of 2D materials became very popular in the field due to the possibility to totally change their electronic properties by simple rotation. At the same time, in the wide field of photonic crystals, this idea still remains almost untouched, and only some particular problems were considered. One of the reasons is the computational difficulty of the accurate consideration of Moiré superlattices that appear due to the superimposition of misaligned lattices. Indeed, the unit cell of the complex lattice is typically much larger than the original crystals and requires much more computational resources for the computations. Here, we propose a careful adaptation of the Fourier modal method in the form of the scattering matrices for the description of twisted 1D gratings' stacks. Our approach allows us to consider sublattices in close vicinity to each other and account for their interaction via the near-field. In the developed numerical scheme, we utilize the fact that each sublattice is only 1D-periodic and therefore simpler than the resulting 2D superlattice, as well as the fact that even a small gap between the lattices filters out high Fourier harmonics due to their evanescent origin. This accelerates the computations from 1 up to 3 and more orders of magnitude for typical structures depending on the number of harmonics. This paves the way for rigorous study of almost any photonic crystals of the proposed geometry and demonstration of specific Moiré-associated effects.
NNLO Computational Techniques: the Cases H -> gamma gamma and H -> g g
Creators: name: Actis, S.
name: Passarino, G.
name: Sturm, C.
name: Uccirati, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A large set of techniques needed to compute decay rates at the two-loop level are derived and systematized. The main emphasis of the paper is on the two Standard Model decays H -> gamma gamma and H -> g g. The techniques, however, have a much wider range of application: they give practical examples of general rules for two-loop renormalization; they introduce simple recipes for handling internal unstable particles in two-loop processes; they illustrate simple procedures for the extraction of collinear logarithms from the amplitude. The latter is particularly relevant to show cancellations, e.g. cancellation of collinear divergencies. Furthermore, the paper deals with the proper treatment of non-enhanced two-loop QCD and electroweak contributions to different physical (pseudo-)observables, showing how they can be transformed in a way that allows for a stable numerical integration. Numerical results for the two-loop percentage corrections to H -> gamma gamma, g g are presented and discussed. When applied to the process pp -> gg + X -> H + X, the results show that the electroweak scaling factor for the cross section is between -4 % and + 6 % in the range 100 GeV < Mh < 500 GeV, without incongruent large effects around the physical electroweak thresholds, thereby showing that only a complete implementation of the computational scheme keeps two-loop corrections under control.
description: LaTeX, 70 pages, 8 eps figures