cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Uma leitura sobre possíveis estruturas jurídicas de empreendimentos ligados aos catadores, adequadas à realidade brasileira
Creators: name: Portugal Gouvêa, Carlos
name: Monguilod, Ana Carolina
Publisher: name: Zenodo
Year: 2024
Subjects: Resíduos Sólidos
Reciclagem
Cooperativas
Tributário
Brasil

description: A Lei de Resíduos Sólidos reconhece o importante papel das cooperativas e de outras formas de associações de catadores de materiais recicláveis como agentes de gestão integrada de resíduos sólidos urbanos. No entanto, tal legislação não garante direitos ou benefícios específicos para os catadores e suas cooperativas ou associações, e tem o condição apenas de estabelecer diretrizes para a formulação de uma política pública sobre o tema. Neste contexto faz-se necessária uma reflexão sobre a estrutura jurídica mais adequada para os empreendimentos ligados aos catadores de materiais recicláveis de forma a integrá-los de maneira mais digna às diversas cadeias produtivas dos materiais que eles coletaram e reintroduzem no circuito industrial. Assim, este artigo apresenta uma análise jurídica sobre as estruturas mais adequadas à consecução dos objetivos do Projeto Wasteland, relacionadas à reorganização dos trabalhadores atualmente vinculados a diversas cooperativas de catadores atuantes no Aterro Metropolitano do Jardim Gramacho, na cidade de Duque de Caxias, Rio de Janeiro. Janeiro.

Monguilod, Ana Carolina e Portugal Gouvêa, Carlos, Uma Leitura sobre Possíveis Estruturas Jurídicas de Empreendimentos Ligados Aos Catadores, Adequadas à Realidade Brasileira (29 de julho de 2014). Maria Cecília Loschiavo (Org.) Design, Resíduos e Dignidade, São Paulo: CNPq, 2014, Disponível em SSRN: https://ssrn.com/abstract=2473847
Constraints on the Helium Abundance from Fast Radio Bursts
Creators: name: Jing, Liang
name: Xia, Jun-Qing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Through the relationship between dispersion measures (DM) and redshifts, fast radio bursts (FRBs) are considered to be very promising cosmological probes. In this paper, we attempted to use the DM-z relationship of FRBs to study the helium abundance ($Y_{\rm He}$) in the universe. First, we used 17 current FRBs with known redshifts for our study. Due to their low redshifts and the strong degeneracy between $Y_{\rm He}$ and $Ω_bh^2$, however, this catalog could not provide a good constraint on the helium abundance. Then, we simulated 500 low redshift FRB mock data with $z\in[0,\,1.5]$ to forecast the constraining ability on $Y_{\rm He}$. In order to break the degeneracy between $Y_{\rm He}$ and $Ω_bh^2$ further, we introduced the shift parameters of the Planck measurement $(R,l_A,Ω_bh^2)$ as a prior, where $Ω_bh^2$ represents the baryon density parameter, and $R$ and $l_A$ correspond to the scaled distance to recombination and the angular scale of the sound horizon at recombination, respectively. We obtained the standard deviation for the helium abundance: $σ({Y_{\rm He}}) = 0.025$. Finally, we considered 2000 higher redshift FRB data with the redshift distribution of $[0,\,3]$ and found that the constraining power for $Y_{\rm He}$ would be improved by more than 2 times, $σ({Y_{\rm He}}) = 0.011$, which indicates that the FRB data with high redshift can provide a better constraint on the helium abundance. Hopefully, large FRB samples with high redshift from the Square Kilometre Array can provide high-precision measurements of the helium abundance in the near future.
description: 12 pages, 4 figures
CSSI Element: SI2-SSE: Gunrock: High-Performance GPU Graph Analytics
Creators: name: Porumbescu, Serban D.
name: Owens, John D.
Publisher: name: Zenodo
Year: 2022

description: We present a plan to develop the “Gunrock” programmable, high-performance graph analytics library for programmable graphics processors (GPUs) from a working prototype to a robust, sustainable, open-source component of the GPU computing ecosystem. We believe Gunrock is the most fully-featured and highest-performing programmable graph library today for single-GPU and single-node, multiple-GPU graph analytics. However, we see numerous exciting opportunities for a coherent program of research and development to improve Gunrock and make it more valuable for the computing community, including supporting greater scalability, expanding the Gunrock stack with both higher-level APIs and additional Gunrock back ends, adding more core operations and primitives to Gunrock, and exploring graph data structure challenges. Gunrock has grown considerably since this grant's inception and we present new foundational work that moves graph analytics for irregular problems beyond bulk synchronous parallel models and on to asynchronous task-based models more amenable to multi-GPU and multi-node computing environments. In addition we present some lessons learned while maintaining an open source project targeting both industry and academia.
Generalized Wilson Loop Method for Nonlinear Light-Matter Interaction
Creators: name: Wang, Hua
name: Tang, Xiuyu
name: Xu, Haowei
name: Li, Ju
name: Qian, Xiaofeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Nonlinear light-matter interaction, as the core of ultrafast optics, bulk photovoltaics, nonlinear optical sensing and imaging, and efficient generation of entangled photons, has been traditionally studied by first-principles theoretical methods with the sum-over-states approach. However, this indirect method often suffers from the divergence at band degeneracy and optical zeros as well as convergence issues and high computation costs when summing over the states. Here, using shift vector and shift current conductivity tensor as an example, we present a gauge-invariant generalized approach for efficient and direct calculations of nonlinear optical responses by representing interband Berry curvature, quantum metric, and shift vector in a generalized Wilson loop. This generalized Wilson loop method avoids the above cumbersome challenges and allows for easy implementation and efficient calculations. More importantly, the Wilson loop representation provides a succinct geometric interpretation of nonlinear optical processes and responses based on quantum geometric tensors and quantum geometric potentials and can be readily applied to studying other excited-state responses.
description: 20 pages, 10 figures
Tightening EU ETS targets in line with the European Green Deal: Impacts on the decarbonization of the EU power sector
Creators: name: Pietzcker, Robert C.
name: Osorio, Sebastian
name: Rodrigues, Renato
Publisher: name: Amsterdam : Elsevier Science
Year: 2021
Subjects: subject: Carbon capture and storage (CCS)
subject: Electricity decarbonization
subject: EU Emission Trading System (EU ETS)
subject: European Green Deal
subject: Power sector
subject: Renewable energy
subject: 620

description: The EU Green Deal calls for climate neutrality by 2050 and emission reductions of 50–55% in 2030 in comparison to 1990. Achieving these reductions requires a substantial tightening of the regulations of the EU emissions trading system (EU ETS). This paper explores how the power sector would have to change in reaction to a tighter EU ETS target, and analyses the technological and economic implications. To cover the major ETS sectors, we combine a detailed power sector model with a marginal-abatement cost curve representation of industry emission abatement. We find that tightening the target would speed up the transformation by 3–17 years for different parts of the electricity system, with renewables contributing 74% of the electricity in 2030, EU-wide coal use almost completely phased-out by 2030 instead of 2045, and zero electricity generation emissions reached by 2040. Carbon prices within the EU ETS would more than triple to 129€/tCO2 in 2030, reducing cumulated power sector emissions from 2017 to 2057 by 54% compared to a scenario with the current target. This transformation would come at limited costs: total discounted power system costs would only increase by 5%. We test our findings against a number of sensitivities: an increased electricity demand, which might arise from sector coupling, increases deployment of wind and solar and prolongs gas usage. Not allowing transmission expansion beyond 2020 levels shifts investments from wind to PV, hydrogen and batteries, and increases total system costs by 3%. Finally, the unavailability of fossil carbon capture and storage (CCS) or further nuclear investments does not impact results. Unavailability of bioenergy-based CCS (BECCS) has a visible impact (18% increase) on cumulated power sector emissions, thus shifting more of the mitigation burden to the industry sector, but does not increase electricity prices or total system costs (<1% increase). © 2021 The Authors
GASP: Gated Attention For Saliency Prediction
Creators: name: Abawi, Fares
name: Weber, Tom
name: Wermter, Stefan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Saliency prediction refers to the computational task of modeling overt attention. Social cues greatly influence our attention, consequently altering our eye movements and behavior. To emphasize the efficacy of such features, we present a neural model for integrating social cues and weighting their influences. Our model consists of two stages. During the first stage, we detect two social cues by following gaze, estimating gaze direction, and recognizing affect. These features are then transformed into spatiotemporal maps through image processing operations. The transformed representations are propagated to the second stage (GASP) where we explore various techniques of late fusion for integrating social cues and introduce two sub-networks for directing attention to relevant stimuli. Our experiments indicate that fusion approaches achieve better results for static integration methods, whereas non-fusion approaches for which the influence of each modality is unknown, result in better outcomes when coupled with recurrent models for dynamic saliency prediction. We show that gaze direction and affective representations contribute a prediction to ground-truth correspondence improvement of at least 5% compared to dynamic saliency models without social cues. Furthermore, affective representations improve GASP, supporting the necessity of considering affect-biased attention in predicting saliency.
description: International Joint Conference on Artificial Intelligence (IJCAI-21)
Serious Gaming, Gamification And Game Making: New Avenues Towards Learning Innovation?
Creators: name: Ott, Michela
Publisher: name: Zenodo
Year: 2015
Subjects: Serious Games, Technology Enhaced Learning, Learning innovation

description: This talk, held by the author during the conference EDUCA Berlin 2013 in the framework of the workshop on learning innovation by EACEA, tackles the issue of the educational added value of Serious games
description: Preconference Workshop Openness, Innovation, and Inclusion: European Policies and Programmes in ICT for Learning by EACEA
description: {"references": ["Bottino, R. M., Ott, M., & Tavella, M. (2008). The impact of mind game playing on children's reasoning abilities: reflections from an experience. In: Proceedings of the 2nd European Conference on game based learning (ECGBL), (pp.51-57) Academic Conferences-Academic Publishing International, Reading, UK", "Bottino, R. M., Ott, M., & Benigno, V. (2009) Digital mind games: experience-based reflections on design and interface features supporting the development of reasoning skills In Pivec, M (ed.) Proceedings of the 3rd European Conference on game based learning  (ECGBL) (pp. 53-61). Academic Conferences-Academic Publishing International, Reading, UK", "Bellotti, F., Berta, R., De Gloria, A., Lavagnino, E., Dagnino, F. M., Ott, M., Romero, M,. Usart, M., Mayer, I.S., Designing a Course for Stimulating Entrepreneurship in Higher Education through Serious Games, Procedia Computer Science, Volume 15, 2012, Pages 174-186", "Bellotti, F.; Berta, R.; De Gloria, A.; Lavagnino, E.; Dagnino, F.M.; Antonaci, A.; Ott, M., \"A Gamified Short Course for Promoting Entrepreneurship among ICT Engineering Students,\" Advanced Learning Technologies (ICALT), 2013 IEEE 13th International Conference on , vol., no., pp.31,32, 15-18 July 2013", "Bottino, R. M., Earp, J., & Ott, M. (2012, July). MAGICAL: Collaborative Game Building as a Means to Foster Reasoning Abilities and Creativity. In Advanced Learning Technologies (ICALT), 2012 IEEE 12th International Conference on (pp. 744-745). IEEE.", "Morchio, B., Ott, M., & Pesenti, E. (1989). The Italian language: developmental reading and writing problems. In Reading and writing disorders in different orthographic systems (pp. 143-161). Springer Netherlands.", "Dini, S., Ferlino, L., Gettani, A., Martinoli, C., & Ott, M. (2007). Educational software and low vision students: evaluating accessibility factors. Universal Access in the Information Society, 6(1), 15-29.", "Earp, J., Dagnino, F. M., Ott , M. (2012) INVESTIGATING THE \u201cMAGICAL\u201d EFFECTS OF GAME BUILDING ON THE DEVELOPMENT OF 21ST CENTURY SKILLS ProceedingsICERI2012, pp 5778-5785"]}
CSSI Element : Large-Scale Image Processing Infrastructure Development (LIMPID)
Creators: name: B.S. Manjunath
name: Pollock, Tresa
name: Chowdhury, Amit
name: Nirav Merchant
name: Miller, Robert
name: Khan, Amil
name: Kumar, Satish
name: Goebel, Michael
name: Jiaxiang Jiang
name: Levenson, Connor
name: Chandrakanth Gudavalli
Publisher: name: Zenodo
Year: 2022
Subjects: Machine Learning Systems
Cyberinfrastructure
Cloud Computing
Deep Learning
Software Engineering

description: This is the poster for presentation at the CSSI PI meeting on July 25-26.
description: Award #: 1664172
Michael Tarchnischvili
Michael Tarchnischvili
მიხეილ თარხნიშვილი
Creators: name: ჭუმბურიძე, თამარ
name: Tchumburidze, Tamar
Publisher: name: Christlicher Orient im Porträt
Year: 2015
Subjects: მეცნიერების ისტორია
ქრისტიანული აღმოსავლეთი
History of science
Christian Orient
Wissenschaftsgeschichte
Christliches Orient

description: NA
Towards Understanding Connections between Security/Privacy Attitudes and Unlock Authentication
Creators: name: Aviv, Adam J.
name: Kuber, Ravi
Publisher: name: Maryland Shared Open Access Repository
Year: 2018
Subjects: Cryptography and Security
Computers and Society
Human-Computer Interaction
mobile devices
unlock authentication
Android graphical unlock patterns

description: In this study, we examine the ways in which user attitudes towards privacy and security relating to mobile devices and the data stored thereon may impact the strength of unlock authentication, focusing on Android's graphical unlock patterns. We conducted an online study with Amazon Mechanical Turk (N=750) using self-reported unlock authentication choices, as well as Likert scale agreement/disagreement responses to a set of seven privacy/security prompts. We then analyzed the responses in multiple dimensions, including a straight average of the Likert responses as well as using Principle Component Analysis to expose latent factors. We found that responses to two of the seven questions proved relevant and significant. These two questions considered attitudes towards general concern for data stored on mobile devices, and attitudes towards concerns for unauthorized access by known actors. Unfortunately, larger conclusions cannot be drawn on the efficacy of the broader set of questions for exposing connections between unlock authentication strength (Pearson Rank r=−0.08, p<0.1). However, both of our factor solutions exposed differences in responses for demographics groups, including age, gender, and residence type. The findings of this study suggests that there is likely a link between perceptions of privacy/security on mobile devices and the perceived threats therein, but more research is needed, particularly on developing better survey and measurement techniques of privacy/security attitudes that relate to mobile devices specifically.
description: https://arxiv.org/abs/1801.07518
Collaborative Research: SI2-SSI: ELSI-Infrastructure for Scalable Electronic Structure Theory
Creators: name: Blum, Volker
name: Lin, Lin
name: Lu, Jianfeng
name: Yang, Chao
name: Vazquez-Mayagoitia, Alvaro
name: Campos, Carmen
name: Dawson, William
name: Ehlert, Sebastian
name: Garcia, Alberto
name: Havu, Ville
name: Hourahine, Ben
name: Huhn, William P.
name: Jacquelin, Matthias
name: Jia, Weile
name: Keceli, Murat
name: Kokott, Sebastian
name: Laasner, Raul
name: Li, Yingzhou
name: Moussa, Jonathan
name: Roman, Jose E.
name: Song, Ruyi
name: Yu, Victor Wen-zhe
name: Yao, Yi
Publisher: name: Zenodo
Year: 2022

description: The overarching goal of the ELSI (ELectronic Structure Infrastructure) project is the creation of an open-source software infrastructure that integrates and helps support several leading approaches to solve or to circumvent the eigenvalue problem of electronic structure theory, particularly Kohn-Sham density-functional theory (DFT). Electronic structure theory continues to be one of the most widely important applications of scientific computing. ELSI fosters a stable, sustainable software infrastructure to solve the key bottleneck of DFT in a code-agnostic way. We review ELSI and recent developments including (1) ELPA2-GPU, a scalable, cross-node eigenvalue solver for GPU architectures, (2) a successful, robust mixed-precision approach that approximately halves the eigenvalue solver time in production DFT, and (3) very large DFT calculations without any specific sparsity approximations, carried out on Google's Tensor Processing Units (TPUs) together with a team at Google.
On retrograde orbits, resonances and stability
Creators: name: Morais, M. H. M.
name: Namouni, F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We start by reviewing our previous work on retrograde orbital configurations and on modeling and identifying retrograde resonances. Then, we present new results regarding the enhanced stability of retrograde configurations with respect to prograde configurations in the low mass ratio regime of the planar circular restricted 3-body problem. Motivated by the recent discovery of small bodies which are in retrograde resonance with the Solar System's giant planets we then explore the case with mass ratio 0.001 and show new stability maps in a grid of semi-major axis versus eccentricity for the 2/1 and 1/2 retrograde resonances. Finally, we explain how the stability borders of the 2/1 and 1/2 retrograde resonances are related to the resonant orbits' geometry.
description: 12 pages, 6 figures
Experimental multi-scale approach to determine the local mechanical properties of foam base material in polyisocyanurate metal panels
Creators: name: Gahlen, P.
name: Fröbel, S.
name: Karbach, A.
name: Gabriel, D.
name: Stommel, M.
Publisher: name: Amsterdam [u.a.] : Elsevier Science
Year: 2021
Subjects: subject: Atomic force microscopy
subject: Experimental micromechanics
subject: Nanoindentation
subject: Polyisocyanurate foam
subject: 540

description: Polyisocyanurate (PIR) foams were examined regarding their local chemical composition using ATR-IR spectroscopy. As a special parameter the PIR: Amide III intensity ratio is to be mentioned, which represents the quantity of the formed PIR groups. Based on the local PIR: Amide III intensity ratio, the mechanical properties (Young's modulus) of the foam base material were analyzed at defined positions by AFM and Nanoindentation. It turned out that the AFM method is only suitable for qualitative analysis, because the values differ strongly from macroscopic measurements. For the measurements using nanoindentation, a new embedding method was developed, which achieves significantly more realistic and reproducible results compared to the embedding method used in the literature and shows a very good agreement with the macroscopic values. In general, it has been shown that a higher PIR: Amide III intensity ratio tends to lead to a higher Young's modulus. Nevertheless, there are other, currently unknown characteristic values which also influence the Young's modulus.
Referencing Data In Publications: Principles, Policy And Practice: Presentations
Creators: name: Hodson, Simon
name: Harcourt, Rob
name: Easteal, Simon
name: McEachern, Steve
name: Miller, Julia Colleen
name: Banks, Simon
name: Rosauer, Dan
name: Missingham, Roxanne
Publisher: name: Zenodo
Year: 2016
Subjects: data citation

description: Presentations from the workshop on 'Referencing Data in Publications: Principles, Policy and Practice' held on 28 October 2015 at the Australian Academy of Sciences, Canberra.  This workshop was convened by ANDS and CODATA as part of an international series of workshops organised by the CODATA Task Group on Data Citation.
title: Essays on the political economy of decentralization
Creators: name: Poole, Ed Gareth
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2017
Subjects: subject: J Political Science
subject: JC Political theory

description: This thesis consists of three papers that make a distinctive contribution to the study of decentralization in the areas of fiscal policy, legislative behavior and government responsiveness.
 The first paper revisits theories of substate tax policy that usually draw on evidence from stable federations. Investigating fiscal decentralization reforms in four European countries subject to intense center-periphery territorial competition, I find that incentives operating in such systems generate a paradox whereby prominent autonomist regions are among the least likely to make proactive changes after decentralization. I theorize this as the best response to central government attempts at blame-shifting by locking regions into making controversial policy changes. The frequent alignment of autonomist parties as ‘catch-all’ parties buttresses incentives to avoid tax innovation.
 The second paper picks up these themes of institutional constraints and electoral incentives faced by political actors. Addressing a frequently confounding question in the field, I exploit the unusual treatment of dual candidacy in the UK’s devolved legislatures to examine whether mixed-member electoral systems influence the legislative behavior of reelection-seeking politicians and uncover a split finding. Although there is some evidence that status as a list or constituency member influences members’ assignments, other connections to members’ presumed re-election interests are not found. I contend that the influence of electoral rules is conditioned by contextual factors including re-selection procedures, chamber size and
 strong parties.
 Building on insights from the first paper, the third paper empirically scrutinizes expectations from fiscal federalism theory that lower tiers of government should be more responsive to citizens. Using the responses from two waves of FOI requests emailed to 812 public bodies, I develop objective measures of timeliness and quality which identify significant variations in responsiveness across the tiers and territories of the UK. I argue that the theoretical foundations of traditional fiscal federalism theory are inadequate because they ignore institutions’ cultural underpinnings, capacity constraints and principal-agent relationships shaping public officials’ behavior.
A mathematical criterion for single photon sources used in quantum cryptography
Creators: name: Pathak, Anirban
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A single photon source (SPS) is very important for quantum computation. In particular, it is essential for secured quantum cryptography. But there is no perfect SPS in reality. Therefore, probabilistic SPS where probability of simultaneous emission of two, three, four and more photon is less than the emission of a single photon are used. Since classical photon always comes in bunch, the required single photon source must be nonclassical. In the well-known antibunched state the rate of simultaneous emission of two photon is less than that of single photon. But the requirement of quantum cryptography is a multiphoton version of the antibunched state or the higher order antibunched state. Recently we have reported a mathematical criterion for higher order antibunching. Here we have shown that any proposal for SPS to be used in quantum cryptography should satisfy this criterion. We have studied four wave mixing as a possible candidate of single photon source.
description: 8 pages, no figure, Latex 2e
The quantum cryptographic switch
Creators: name: Narayanaswamy, Srinatha
name: Srikrishna, Omkar
name: Srikanth, R.
name: Banerjee, Subhashish
name: Pathak, Anirban
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We illustrate using a quantum system the principle of a cryptographic switch, in which a third party (Charlie) can control to a continuously varying degree the amount of information the receiver (Bob) receives, after the sender (Alice) has sent her information. Suppose Charlie transmits a Bell state to Alice and Bob. Alice uses dense coding to transmit two bits to Bob. Only if the 2-bit information corresponding to choice of Bell state is made available by Charlie to Bob can the latter recover Alice's information. By varying the information he gives, Charlie can continuously vary the information recovered by Bob. The performance of the protocol subjected to the squeezed generalized amplitude damping channel is considered. We also present a number of practical situations where a cryptographic switch would be of use.
description: 7 pages, 4 Figures
THE SCIENCE OF FUTURE TECHNOLOGY THROUGH MEDIA EDUCATION PEDAGOGICAL SIGNIFICANCE OF DEVELOPING THE INFORMATION-ANALYTICAL COMPETENCE OF TEACHER
Creators: name: Aldasheva, Sayyorakhan
Publisher: name: Zenodo
Year: 2024

description: In the article, the effectiveness of multimedia lessons, the factors of positive influence on the development of informational and analytical competence of future teachers of technology are studied. Based on the scientific and practical significance of the article, suggestions and recommendations are given in the concluding part.
Relation between squeezing of vacuum fluctuations, quantum entanglement and sub-shot noise in Raman scattering
Creators: name: Pathak, Anirban
name: Krepelka, Jaromir
name: Perina, Jan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A completely quantum description of Raman process is used to investigate the nonclassical properties of the modes in the stimulated, spontaneous and partially spontaneous Raman process. Both coherent scattering (where all the initial modes are coherent) and chaotic scattering (where initial phonon mode is chaotic and all the other modes are coherent) are studied. Nonclassical character of Raman process is observed by means of intermodal entanglement, single mode and intermodal squeezing of vacuum fluctuations, sub-shot noise and wave variances. Joint photon-phonon number and integrated-intensity distributions are then used to illustrate the observed nonclassicalities. Conditional and difference number distributions are also provided to illustrate the nonclassical character. The mutual relation between the obtained nonclassicalities and their variations dependent on phases, rescalled time and ratio of coupling constants are also reported.
description: 12 pages, 9 figures
Intermodal entanglement in Raman processes
Creators: name: Sen, Biswajit
name: Giri, Sandip Kumar
name: Mandal, Swapan
name: Ooi, C. H. Raymond
name: Pathak, Anirban
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The operator solution of a completely quantum mechanical Hamiltonian of the Raman processes is used here to investigate the possibility of obtaining intermodal entanglement between different modes involved in the Raman processes (e.g. pump mode, Stokes mode, vibration (phonon) mode and anti-Stokes mode). Intermodal entanglement is reported between a) pump mode and anti-Stokes mode, b) pump mode and vibration (phonon) mode c) Stokes mode and vibration phonon mode, d) Stokes mode and anti-stokes mode in the stimulated Raman processes for the variation of the phase angle of complex eigenvalue $α_{1}$ of pump mode $a$. Some incidents of intermodal entanglement in the spontaneous and the partially spontaneous Raman processes are also reported. Further it is shown that the specific choice of coupling constants may produce genuine entanglement among Stokes mode, anti-Stokes mode and vibration-phonon mode. It is also shown that the two mode entanglement not identified by Duan's criterion may be identified by Hillery-Zubairy criteria. It is further shown that intermodal entanglement, intermodal antibunching and intermodal squeezing are independent phenomena.
description: 11 pages, 4 figures
Can Agricultural Value Chain Programs Help Rural Youth Increase their Income? Short- and Medium-term Evidence from a Randomized Trial in Kenya
Creators: name: Pracht, Wyatt
name: Ricker-Gilbert, Jacob
Publisher: name: Unknown
Year: 2024
Subjects: subject: International Development
subject: Rural youth
subject: inputs
subject: income
subject: expenditures
subject: grit
subject: age
subject: Kenya

description: In Sub-Saharan Africa, off-farm employment opportunities in agri-food systems are rapidly increasing, yet young people in rural areas continue to be plagued by high levels of underemployment. To combat this issue, policymakers have started encouraging rural youth to undertake entrepreneurial opportunities along agricultural value chains. But there is scant evidence on the effectiveness of these types of programs to generate economic benefits for rural youth. The current study provides insight on this issue by evaluating a randomized control trial in Eastern Kenya where rural youth were trained in business concepts and linked with agricultural input suppliers to become resellers of post-harvest inputs to smallholder farmers. We found that after one season the intervention generated large increases in income on average. However, quantile regressions revealed that these large impacts disproportionately accrued to youth at the top of the income distribution and failed to significantly generate income for the majority of youth in the treatment group. Disaggregating income sources further showed that these gains were most likely being driven by a crowding in of farming income relative to baseline. Marginal treatment effects also demonstrated that heterogeneity in varying levels of grit and age contributed to the gains in income.
Hierarchical quantum communication
Creators: name: Shukla, Chitra
name: Pathak, Anirban
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A general approach to study the hierarchical quantum information splitting (HQIS) is proposed and the same is used to systematically investigate the possibility of realizing HQIS using different classes of 4-qubit entangled states that are not connected by SLOCC. Explicit examples of HQIS using 4-qubit cluster state and 4-qubit |Ω> state are provided. Further, the proposed HQIS scheme is generalized to introduce two new aspects of hierarchical quantum communication. To be precise, schemes of probabilistic hierarchical quantum information splitting and hierarchical quantum secret sharing are obtained by modifying the proposed HQIS scheme. A number of practical situations where hierarchical quantum communication would be of use are also presented.
description: 14 pages, 6 tables, no figure
Condiciones jurídicas para la existencia de un daño indemnizable en la negativa de asistencia al suicidio por parte de profesionales e instituciones de salud : un estudio a partir de pacientes con trastorno de depresión mayor (MDD) resistente al tratamiento (TRD)
Creators: name: González Villamil, David Andrés
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Trastornos mentales - Legislación
subject: Responsabilidad civil - Aspectos morales
subject: Sentencias - Colombia
subject: Trastorno de depresión mayor
subject: Suicidio asistido
subject: Responsabilidad peri-mortal
subject: Daño indemnizable
subject: Asistencia médica al suicidio

description: La sentencia C-164 de 2022, que despenalizó la asistencia médica al suicidio, abrió la posibilidad a eventuales nuevos supuestos de responsabilidad peri-mortal, en la medida en que las condiciones fijadas por la Corte Constitucional dan lugar a que pacientes con trastornos mentales puedan acceder a dicha asistencia. Ante esto, surge la cuestión sobre las condiciones que se deben cumplir para que la frustración de la solicitud de asistencia de estos pacientes por parte de la negativa de médicos o instituciones de salud a brindarla constituye un daño indemnizable. A partir del estudio de caso de los pacientes con Trastorno de Depresión Mayor (MDD) Resistente al Tratamiento (TRD), se analizarán las condiciones para acceder a la asistencia médica al suicidio, se determinará si estos pacientes pueden acceder a ella y si la frustración de la solicitud de asistencia constituye un daño indemnizable, relacionando las condiciones necesarias.
description: The Constitutional Court’s ruling C-164 of 2022, which legalized medical assistance to suicide (MAS), has paved the way for potentially new scenarios of peri-mortem civil liabilities. This is due to the Court’s guidelines, which allow individuals with mental health disorders to seek such assistance. As a result, a pertinent question arises: what criteria must be met for the refusal of this assistance by medical professionals or healthcare institutions to be considered damage? The Court’s established prerequisities will be examined through a case study of patients with Treatment-Resistant Major Depressive Disorder (TRD-MDD) in order to determine whether these patients meet them and what conditions are necessary for the impediment to access to that medical assistance to be a damage.
Approximation of SDEs: a stochastic sewing approach
Creators: name: Butkovsky, Oleg
name: Dareiotis, Konstantinos
name: Gerencsér, Máté
Publisher: name: Berlin ; Heidelberg ; New York, NY : Springer
Year: 2021
Subjects: subject: Fractional Brownian motion
subject: Irregular drift
subject: Regularization by noise
subject: Stochastic differential equations
subject: Strong rate of convergence
subject: 510

description: We give a new take on the error analysis of approximations of stochastic differential equations (SDEs), utilizing and developing the stochastic sewing lemma of Lê (Electron J Probab 25:55, 2020. 10.1214/20-EJP442). This approach allows one to exploit regularization by noise effects in obtaining convergence rates. In our first application we show convergence (to our knowledge for the first time) of the Euler-Maruyama scheme for SDEs driven by fractional Brownian motions with non-regular drift. When the Hurst parameter is H∈(0,1) and the drift is Cα , α∈[0,1] and α>1-1/(2H) , we show the strong Lp and almost sure rates of convergence to be ((1/2+αH)∧1)-ε , for any ε>0 . Our conditions on the regularity of the drift are optimal in the sense that they coincide with the conditions needed for the strong uniqueness of solutions from Catellier and Gubinelli (Stoch Process Appl 126(8):2323-2366, 2016. 10.1016/j.spa.2016.02.002). In a second application we consider the approximation of SDEs driven by multiplicative standard Brownian noise where we derive the almost optimal rate of convergence 1/2-ε of the Euler-Maruyama scheme for Cα drift, for any ε,α>0 .
Wigner distribution, nonclassicality and decoherence of generalized and reciprocal binomial states
Creators: name: Pathak, Anirban
name: Banerji, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: There are quantum states of light that can be expressed as finite superpositions of Fock states (FSFS). We demonstrate the nonclassicality of an arbitrary FSFS by means of its phase space distributions such as the Wigner function and the $Q$-function. The decoherence of the FSFS is studied by considering the time evolution of its Wigner function in amplitude decay and phase damping channels. As examples, we determine the nonclassicality and decoherence of generalized and reciprocal binomial states.
description: 18 pages, 8 Figures
Data and code for "The effect of CO2 ramping rate on the transient weakening of the Atlantic Meridional Overturning Circulation"
Creators: name: Hankel, Camille
Publisher: name: Zenodo
Year: 2024

description: Replication data and code for the figures in: "The effect of CO2 ramping rate on the transient weakening of the Atlantic Meridional Overturning Circulation", by Camille Hankel, Proceedings of the National Academy of Sciences, in press.
Nonclassicality in two-mode BEC
Creators: name: Giri, Sandip Kumar
name: Sen, Biswajit
name: Ooi, C H Raymond
name: Pathak, Anirban
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An analytic operator solution of a generalized quantum mechanical Hamiltonian of two-mode Bose Einstein condensates (BECs) is obtained and the same is used to investigate the nonclassical properties of the modes present in the system. Nonclassical characters are observed by means of single mode and intermodal squeezing, single mode and intermodal sub-Poissonian boson statistics and intermodal entanglement. In addition to the traditionally studied lower order nonclassical properties, signatures of higher order nonclassical characters of two-mode BEC systems are also obtained by investigating the possibility of higher order antibunching and higher order entanglement. The mutual relation among the observed nonclassicalities and their evolution (variation) with rescaled time and the ratio of the single boson tunneling amplitude ($\varepsilon$) and the coupling constant for the intra-modal interaction ($κ$) are also reported.
description: 9 pages, 7 figures
Supplementary document for Compact nonvolatile 2×2 photonic switch based on two-mode interference - 5972488.pdf
Creators: name: Chunmeng, Song
name: Gao, Yixiao
name: Wang, Guoxiang
name: Chen, Yimin
name: Xu, Peipeng
name: GU, Chenjie
name: Shi, Yaocheng
name: Shen, Xiang
Publisher: name: Optica Publishing Group
Year: 2022
Subjects: subject: 100507 Optical Networks and Systems
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Supplemental document
Phase-space interference of states optically truncated by quantum scissors: Generation of distinct superpositions of qudit coherent states by displacement of vacuum
Creators: name: Miranowicz, Adam
name: Paprzycka, Malgorzata
name: Pathak, Anirban
name: Nori, Franco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Conventional Glauber coherent states (CS) can be defined in several equivalent ways, e.g., by displacing the vacuum or, explicitly, by their infinite Poissonian expansion in Fock states. It is well known that these definitions become inequivalent if applied to finite $d$-level systems (qudits). We present a comparative Wigner-function description of the qudit CS defined (i) by the action of the truncated displacement operator on the vacuum and (ii) by the Poissonian expansion in Fock states of the Glauber CS truncated at $(d-1)$-photon Fock state. These states can be generated from a classical light by its optical truncation using nonlinear and linear quantum scissors devices, respectively. We show a surprising effect that a macroscopically distinguishable superposition of two qudit CS (according to both definitions) can be generated with high fidelity by displacing the vacuum in the qudit Hilbert space. If the qudit dimension $d$ is even (odd) then the superposition state contains Fock states with only odd (even) photon numbers, which can be referred to as the odd (even) qudit CS or the female (male) Schrödinger cat state. This phenomenon can be interpreted as an interference of a single CS with its reflection from the highest-energy Fock state of the Hilbert space, as clearly seen via phase-space interference of the Wigner function. We also analyze nonclassical properties of the qudit CS including their photon-number statistics and nonclassical volume of the Wigner function, which is a quantitative parameter of nonclassicality (quantumness) of states. Finally, we study optical tomograms, which can be directly measured in the homodyne detection of the analyzed qudit cat states and enable the complete reconstructions of their Wigner functions.
description: 14 pages, 10 figures
Precise Localization and Control of Catalytic Janus Micromotors Using Weak Magnetic Fields
Creators: name: Khalil, Islam S. M.
name: Magdanz, Veronika
name: Sanchez, Samuel
name: Schmidt, Oliver G.
name: Misra, Sarthak
Publisher: name: London : Sage Publishing
Year: 2015
Subjects: subject: 3D space
subject: Localization
subject: Magnetic control
subject: Micromotors
subject: Self-propulsion
subject: 620

description: We experimentally demonstrate the precise localization of spherical Pt-Silica Janus micromotors (diameter 5 μm) under the influence of controlled magnetic fields. First, we control the motion of the Janus micromotors in two-dimensional (2D) space. The control system achieves precise localization within an average region-of-convergence of 7 μm. Second, we show that these micromotors provide sufficient propulsion force, allowing them to overcome drag and gravitational forces and move both downwards and upwards. This propulsion is studied by moving the micromotors in three-dimensional (3D) space. The micromotors move downwards and upwards at average speeds of 19.1 μm/s and 9.8 μm/s, respectively. Moreover, our closed-loop control system achieves localization in 3D space within an average region-of-convergence of 6.3 μm in diameter. The precise motion control and localization of the Janus micromotors in 2D and 3D spaces provides broad possibilities for nanotechnology applications.
Higher order nonclassicalities in a codirectional nonlinear optical coupler: Quantum entanglement, squeezing and antibunching
Creators: name: Thapliyal, Kishore
name: Pathak, Anirban
name: Sen, Biswajit
name: Perina, Jan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Higher order nonclassical properties of fields propagating through a codirectional asymmetric nonlinear optical coupler which is prepared by combining a linear wave guide and a nonlinear (quadratic) wave guide operated by second harmonic generation are studied. A completely quantum mechanical description is used here to describe the system. Closed form analytic solutions of Heisenberg's equations of motion for various modes are used to show the existence of higher order antibunching, higher order squeezing, higher order two-mode and multi-mode entanglement in the asymmetric nonlinear optical coupler. It is also shown that nonclassical properties of light can transfer from a nonlinear wave guide to a linear wave guide.
description: 9 pages 5 figures
Controlled bidirectional remote state preparation in noisy environment: A generalized view
Creators: name: Sharma, Vishal
name: Shukla, Chitra
name: Banerjee, Subhashish
name: Pathak, Anirban
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that a realistic, controlled bidirectional remote state preparation is possible using a large class of entangled quantum states having a particular structure. Existing protocols of probabilistic, deterministic and joint remote state preparation are generalized to obtain the corresponding protocols of controlled bidirectional remote state preparation (CBRSP). A general way of incorporating the effects of two well known noise processes, the amplitude-damping and phase-damping noise, on the probabilistic CBRSP process is studied in detail by considering that noise only affects the travel qubits of the quantum channel used for the probabilistic CBRSP process. Also indicated is how to account for the effect of these noise channels on deterministic and joint remote state CBRSP protocols.
description: 11 pages, 2 figures
A Simplified Hierarchical Dynamic Quantum Secret Sharing Protocol with Added Features
Creators: name: Mishra, Sandeep
name: Shukla, Chitra
name: Pathak, Anirban
name: Srikanth, R.
name: Venugopalan, Anu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Generalizing the notion of dynamic quantum secret sharing (DQSS), a simplified protocol for hierarchical dynamic quantum secret sharing (HDQSS) is proposed and it is shown that the protocol can be implemented using any existing protocol of quantum key distribution, quantum key agreement or secure direct quantum communication. The security of this proposed protocol against eavesdropping and collusion attacks is discussed with specific attention towards the issues related to the composability of the subprotocols that constitute the proposed protocol. The security and qubit efficiency of the proposed protocol is also compared with that of other existing protocols of DQSS. Further, it is shown that it is possible to design a semi-quantum protocol of HDQSS and in principle, the protocols of HDQSS can be implemented using any quantum state. It is also noted that the completely orthogonal-state-based realization of HDQSS protocol is possible and that HDQSS can be experimentally realized using a large number of alternative approaches.
description: 9 pages, 1 figure
Orthogonal-state-based cryptography in quantum mechanics and local post-quantum theories
Creators: name: Aravinda, S.
name: Banerjee, Anindita
name: Pathak, Anirban
name: Srikanth, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce the concept of cryptographic reduction, in analogy with a similar concept in computational complexity theory. In this framework, class $A$ of crypto-protocols reduces to protocol class $B$ in a scenario $X$, if for every instance $a$ of $A$, there is an instance $b$ of $B$ and a secure transformation $X$ that reproduces $a$ given $b$, such that the security of $b$ guarantees the security of $a$. Here we employ this reductive framework to study the relationship between security in quantum key distribution (QKD) and quantum secure direct communication (QSDC). We show that replacing the streaming of independent qubits in a QKD scheme by block encoding and transmission (permuting the order of particles block by block) of qubits, we can construct a QSDC scheme. This forms the basis for the \textit{block reduction} from a QSDC class of protocols to a QKD class of protocols, whereby if the latter is secure, then so is the former. Conversely, given a secure QSDC protocol, we can of course construct a secure QKD scheme by transmitting a random key as the direct message. Then the QKD class of protocols is secure, assuming the security of the QSDC class which it is built from. We refer to this method of deduction of security for this class of QKD protocols, as \textit{key reduction}. Finally, we propose an orthogonal-state-based deterministic key distribution (KD) protocol which is secure in some local post-quantum theories. Its security arises neither from geographic splitting of a code state nor from Heisenberg uncertainty, but from post-measurement disturbance.
description: 12 pages, no figure, this is a modified version of a talk delivered by Anirban Pathak at Quantum 2014, INRIM, Turin, Italy. This version is published in Int. J. Quantum. Infor