cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Public Private Partnership Problems and Prospects
Creators: name: A. H. M. Azimul Haque
Publisher: name: figshare
Year: 2020
Subjects: subject: 140214 Public Economics- Publically Provided Goods
subject: FOS: Economics and business
subject: Economics

description: Public-Private Partnership often known as PPP, P3, or 3P is a cooperative arrangement between two or more public and private sectors. Public-Private Partnerships are typically undertaken of a long-term nature. Basically it involves governments and businesses that work together to complete a project and, or to provide services to the citizen. The Bangladesh Government, being on the verge of digital transformation and mass development, facilitates the development of core sector public infrastructure and services vital for the people of the nation. Like most of other countries, Public-Private Partnership (PPP) has been accumulated as an important way out for infrastructure development of Bangladesh. Though there have been recent successes in regulatory and institutional framework, several critical issues like transaction expertise, PPP financing facilities are yet to be promulgated in the country. There is also a requirement to have a consolidated incentive for the executing agencies that will bring more inhalant PPP projects for the private sector of Bangladesh. The objective of this assignment is to assess the problems/ threats and future opportunities/ prospects of Public-Private Partnership in the context of Bangladesh.
"DigitalPakt Schule 2019 bis 2024" – Analyse der strukturellen Digitalisierung des Bildungssystems in Deutschland
Creators: name: Wohlfart, Olivia
name: Wagner, Ingo
Publisher: name: PraxisForschungLehrer*innenBildung. Zeitschrift für Schul- und Professionsentwicklung.
Year: 2022

description: Die digitale Transformation stellt die Bildungslandschaft in Deutschland vor große Herausforderungen. Darauf reagierten bildungspolitische Entscheidungsträger*innen mit der Verwaltungsvereinbarung DigitalPakt Schule 2019 bis 2024 zum Auf- und Ausbau digitaler Infrastruktur. In diesem Beitrag werden die Genese und aktuelle Entwicklungen des DigitalPakts auf Basis einer thematischen Inhaltsanalyse von 41 (inter)nationalen bildungspolitischen Dokumenten beschrieben und analysiert. Es zeigt sich, dass die Digitale Agenda der Bundesregierung mit dem Ziel „Zugang und Teilhabe“ den Weg für das Infrastrukturpaket ebnete, welches einen ersten Baustein der Bildungsoffensive für die digitale Wissensgesellschaft darstellen sollte und zugleich einen heftigen Bund-Länder-Streit auslöste. Die Genese des DigitalPakts sowie dessen Zusatzvereinbarungen werden abschließend in Bezug auf bildungspolitische Entscheidungen vor dem Hintergrund der Interdependenzen des politischen, ökonomischen und Bildungssystems diskutiert.
description: PraxisForschungLehrer*innenBildung. Zeitschrift für Schul- und Professionsentwicklung., Bd. 4 Nr. 1 (2022): PraxisForschungLehrer*innenBildung – Ausgabe 4
OPPRESSIVE INDUSTRIES IN THE CONTEXT OF MANAGING AN IMAGE CRISIS
Creators: name: Tworzydło, Dariusz
Publisher: name: figshare
Year: 2022
Subjects: subject: 200104 Media Studies
subject: FOS: Media and communications

description: The article focuses on the problems of oppressive industries in the context of their vulnerability to crisis situations. These critical industries have been subjected to scientific research, which showed that they have more crisis experience, i.e. they more often go through image crises. Thanks to this, managers representing companies operating in this industry are more aware and better prepared for possible image crises. Business entities classified as oppressive industries are normally more susceptible to crisis situations. This type of enterprises need to be aware of this fact and prepared for image-related problems. Classifying industry as oppressive seems to be well-grounded due to such factors as susceptibility of entities operating within the industry to external factors, the complexity of processes performed in the process of production and rendering services, as well as the ultimate consumer’s complicity in those processes. The image crisis involves not only negative implications, but also positive effects – it can be considered as an industry’s immune system which gains strength every time a crisis is properly managed.
Evolution of road infrastructures in large urban areas
Creators: name: Taillanter, Erwan
name: Barthelemy, Marc
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Most cities in the US and in the world were organized around car traffic. In particular, large structures such as urban freeways or ring roads were built for reducing car traffic congestion. With the evolution of public transportation, working conditions, the future of these structures and the organization of large urban areas is uncertain. Here, we analyze empirical data for US cities and show that they display two transitions at different thresholds. For the first threshold of order $T_c^{FW}\sim 10^4$ commuters, we observe the emergence of a urban freeway. The second threshold is larger and of the order $T_c^{RR}\sim 10^5$ commuters above which a ring road emerges. In order to understand these empirical results, we propose a simple model based on a cost-benefit analysis which relies on the balance between construction and maintenance costs of infrastructures and the trip duration decrease (including the effect of congestion). This model predicts indeed such transitions and allows us to compute explicitly the commuter's thresholds in terms of critical parameters such as the average value of time, average capacity of roads, typical construction cost, etc. Furthermore, this analysis allows us to discuss possible scenarios for the future evolution of these structures. In particular, we show that in many cases it is beneficial to remove urban freeways due to their large social cost (that includes pollution, health cost, etc). This type of information is particularly useful at a time when many cities must confront with the dilemma of renovating these aging structures or converting them into another use.
description: 11 pages, 6 figures, 1 Table (Supp. Info is available upon request)
UKIRT Widefield Infrared Survey for Fe$^+$
Creators: name: Lee, Jae-Joon
name: Koo, Bon-Chul
name: Lee, Yong-Hyun
name: Lee, Ho-Gyu
name: Shinn, Jong-Ho
name: Kim, Hyun-Jeong
name: Kim, Yesol
name: Pyo, Tae-Soo
name: Moon, Dae-Sik
name: Yoon, Sung-Chul
name: Chun, Moo-Young
name: Froebrich, Dirk
name: Davis, Chris J.
name: Varricatt, Watson P.
name: Kyeong, Jaemann
name: Hwang, Narae
name: Park, Byeong-Gon
name: Lee, Myung Gyoon
name: Lee, Hyung Mok
name: Ishiguro, Masateru
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The United Kingdom Infrared Telescope (UKIRT) Widefield Infrared Survey for Fe$^+$ (UWIFE) is a 180 deg$^2$ imaging survey of the first Galactic quadrant (7$^{\circ}$ < l < 62$^{\circ}$; |b| < 1.5$^{\circ}$) using a narrow-band filter centered on the [Fe II] 1.644 μm emission line. The [Fe II] 1.644 μm emission is a good tracer of dense, shock-excited gas, and the survey will probe violent environments around stars: star-forming regions, evolved stars, and supernova remnants, among others. The UWIFE survey is designed to complement the existing UKIRT Widefield Infrared Survey for H2 (UWISH2; Froebrich et al. 2011). The survey will also complement existing broad-band surveys. The observed images have a nominal 5σ detection limit of 18.7 mag for point sources, with the median seeing of 0.83". For extended sources, we estimate surface brightness limit of 8.1 x 10$^{-20}$ W m$^{-2}$ arcsec$^{-2}$ . In this paper, we present the overview and preliminary results of this survey.
description: MNRAS Accepted, 13 pages, A pdf version with high-res figures is available at the survey web page (http://gems0.kasi.re.kr/uwife/)
Slow invariant manifold of heartbeat model
Creators: name: Ginoux, Jean-Marc
name: Rossetto, Bruno
Publisher: name: arXiv
Year: 2014
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: A new approach called Flow Curvature Method has been recently developed in a book entitled Differential Geometry Applied to Dynamical Systems. It consists in considering the trajectory curve, integral of any n-dimensional dynamical system as a curve in Euclidean n-space that enables to analytically compute the curvature of the trajectory - or the flow. Hence, it has been stated on the one hand that the location of the points where the curvature of the flow vanishes defines a manifold called flow curvature manifold and on the other hand that such a manifold associated with any n-dimensional dynamical system directly provides its slow manifold analytical equation the invariance of which has been proved according to Darboux theory. The Flow Curvature Method has been already applied to many types of autonomous dynamical systems either singularly perturbed such as Van der Pol Model, FitzHugh-Nagumo Model, Chua's Model, ...) or non-singularly perturbed such as Pikovskii-Rabinovich-Trakhtengerts Model, Rikitake Model, Lorenz Model,... More- over, it has been also applied to non-autonomous dynamical systems such as the Forced Van der Pol Model. In this article it will be used for the first time to analytically compute the slow invariant manifold analytical equation of the four-dimensional Unforced and Forced Heartbeat Model. Its slow invariant manifold equation which can be considered as a "state equation" linking all variables could then be used in heart prediction and control according to the strong correspondence between the model and the physiological cardiovascular system behavior.
description: arXiv admin note: substantial text overlap with arXiv:1408.1712
Proximity nanovalve with large phase-tunable thermal conductance
Creators: name: Strambini, E.
name: Bergeret, F. S.
name: Giazotto, F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a phase-controlled heat-flux quantum valve based on the proximity effect driven by a superconducting quantum interference proximity transistor (SQUIPT). Its operation relies on the phase-dependent quasiparticle density of states in the Josephson weak-link of the SQUIPT which controls thermal transport across the device. In a realistic Al/Cu-based setup the structure can provide efficient control of thermal current inducing temperature swings exceeding $\sim100$~mK, and flux-to-temperature transfer coefficients up to $\sim 500$~mK/$Φ_0$ below 100~mK. The nanovalve performances improve by lowering the bath temperature, making the proposed structure a promising building-block for the implementation of coherent caloritronic devices operating below 1~K.
Investigating strongly interacting multicritical field theories using numerical conformal bootstrap
Creators: name: Dowens, Matthew
Publisher: name: The University of St Andrews
Year: 2022
Subjects: Conformal symmetry
Conformal field theory
Conformal bootstrap
Phase transitions
Critical phenomena
Renormalisation group
High energy physics

description: In strongly correlated quantum systems, conventional techniques for understanding physical behaviour near multicritical points break down. Numerical conformal bootstrap is a promising new method that has proven demonstrably useful in investigating critical phenomena. The method uses the enhanced conformal symmetry exhibited by quantum field theories describing criticality in order to definitively rule out theories based on fundamental symmetry grounds alone. By requiring only that physically plausible conformal field theories (CFTs) satisfy a mathematical self-consistency relation, it allows one to rule out vast amounts of violating CFT data, allowing a rigorous mapping to made of ‘allowed’ CFTs. Such a mapping is powerful due to the concept of universality, whereby the critical behaviour of many disparate physical models is identical and is captured by the same set of critical exponents and the same CFT. This thesis aims to explore the effectiveness of numerical bootstrap. We begin by motivating the bootstrap in a condensed matter context, before reviewing necessary results in the conformal field theory literature and establishing the bootstrap method. A large part of the thesis will be an overview of the working of the method and the approximations made, as well as its applications to simple symmetry groups. We will demonstrate the validity of the method by replicating flagship results, before describing the novel work we have carried out in exploring more complicated global symmetry groups, where more than one fixed point is predicted. Finally, we will conclude and comment on the limitations of the thesis and lines of possible future work.
Two-Way Optical Frequency Comparisons Over 100km Telecommunication Network Fibers
Creators: name: Bercy, Anthony
name: Stefani, Fabio
name: Lopez, Olivier
name: Chardonnet, Christian
name: Pottie, Paul-Eric
name: Amy-Klein, Anne
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By using two-way frequency transfer, we demonstrate ultra-high resolution comparison of optical frequencies over a telecommunication fiber link of 100 km operating simultaneously digital data transfer. We first propose and experiment a bi-directional scheme using a single fiber. We show that the relative stability at 1 s integration time is 7 10^18 and scales down to 5 10^21. The same level of performance is reached when an optical link is implemented with an active compensation of the fiber noise. We also implement a real-time two-way frequency comparison over a uni-directional telecommunication network using a pair of parallel fibers. The relative frequency stability is 10^15 at 1 s integration time and reaches 2 10^17 at 40 000 s. The fractional uncertainty of the frequency comparisons was evaluated for the best case to 2 10^20. These results open the way to accurate and high resolution frequency comparison of optical clocks over intercontinental fiber networks.
Nonseparable panel models with index structure and correlated random effects
Creators: name: Čížek, Pavel
name: Sadikoğlu, Serhan
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: To facilitate semiparametric estimation of general discrete-choice, censored, sample selection, and other complex panel data models, we study identification and estimation of nonseparable multiple-index models in panel data with correlated random effects and a fixed number of time periods. The parameter vectors of interest are shown to be identified up to multiplicative constants and the average marginal effects are identified under the assumption that the distribution of individual effects depends on the explanatory variables only through their averages across time. Under this assumption, we propose to estimate the unknown parameters by the generalized method of moments based on the average and outer product of the difference of derivatives of the regression function. The rate of convergence and asymptotic distribution is established both for the proposed parameter estimates and the average marginal effects. We conduct Monte Carlo simulation studies to assess finite-sample performance of the proposed estimator. We also use it to model dynamic earnings of women, and using our general identification results, we find a negative effect of the number of children not only on the selection into employment as usual, but also on the average earnings.
INFLUENCERZY JAKO WSPARCIE DLA KAMPANII PUBLIC RELATIONS
Creators: name: Tworzydło, Dariusz
Publisher: name: figshare
Year: 2022
Subjects: subject: 200104 Media Studies
subject: FOS: Media and communications

description: The article is a collection of analyses carried out on the basis of literature on the subject and data collected with the utilization of desk research method. It also presents conclusions from surveys conducted by means of a qualitative method — IDI technique — during the Congress of Public Relations Professionals, which took place in April 2018 in Rzeszów. In the group of respondents there were representatives of public relations branch who cooperate with influencers and on top of that have rich experience in the area of PR activities conducted by means of the Internet. The goal of this article is assessment of the relationships occurring in the context of cooperation of PR specialists with influencers, as well as identifying the prospects for changes and potential trends in this area. Among the key conclusions drawn in course of the conducted research we find the one which suggests that using influencers for communication and promotion-related activities is recognized as both a chance and threat for the public relations industry. However, the aspect of threats is particularly important, as it has a direct impact on the emerging and persisting image crises. Due to the fact that influencers enjoy a lot of freedom in their activity in combination with the faith of their clients in their professional approach, there is a risk of emergence of actions which will not just fail to satisfy the assumptions of a promotional campaign, but may also directly hit the image of a given entity. Experts predict that using influencers for promotion will also in the nearest time be a growing trend, which will take hold among solutions used in communication with target groups
Vortex generation in stirred binary Bose-Einstein condensates
Creators: name: da Silva, Anacé N.
name: Kumar, R. Kishor
name: Bradley, Ashton S.
name: Tomio, Lauro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The dynamical vortex production, with a trap-confining time-dependent stirred potential, is studied by using mass-imbalanced cold-atom coupled Bose-Einstein condensates (BEC). The vortex formation is explored by considering that both coupled species are confined by a pancake-like harmonic trap, slightly modified elliptically by a time-dependent periodic potential, with the characteristic frequency enough larger than the transversal trap frequency. The approach is applied to the experimentally accessible binary mixtures $^{85}$Rb-$^{133}$Cs and $^{85}$Rb-$^{87}$Rb, which allow us to verify the effect of mass differences in the dynamics. For both species, the time evolutions of the respective energy contributions, together with associated velocities, are studied in order to distinguish turbulent from non-turbulent flows. By using the angular momentum and moment of inertia mean values, effective classical rotation frequencies are suggested, which are further considered within simulations in the rotating frame without the stirring potential. Spectral analysis is also provided for both species, with the main focus being the incompressible kinetic energies. In the transient turbulent regime, before stable vortex patterns are produced, the characteristic $k^{-5/3}$ Kolmogorov behavior is clearly identified for both species at intermediate momenta $k$ above the inverse Thomas-Fermi radial positions, further modified by the universal $k^{-3}$ scaling at momenta higher than the inverse of the respective healing lengths. Emerging from the mass-imbalanced comparison, relevant is to observe that, as larger is the mass difference, much faster is the dynamical production of stable vortices.
description: 17 pages, 16 figures
Practical Application of Plan−Do−Check−Act Cycle for Quality Improvement of Sustainable Packaging: A Case Study
Creators: name: Nguyen, Vi
name: Nguyen, Nam
name: Schumacher, Bastian
name: Tran, Thanh
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 600 Technik, Technologie
subject: lean manufacturing
subject: PDCA
subject: sustainable packaging
subject: quality management

description: The research aims to give practical instructions for applying Plan–Do–Check–Act (PDCA) cycle in a packaging process. Eco-friendly, recycled material and a new packaging method for quality improvement and cost efficiency of heavily fragile product packaging are studied in this paper. A case study was conducted at GPEM laboratory, Vietnamese German University, Vietnam. In this case study, the current packaging style with Styrofoam material was analyzed and replaced by new packaging material and methods after applying the PDCA cycle for continuous quality improvement. Targets of the research were to find the new packaging method using friendly environment materials, to improve the quality, and to reduce the defect ratio due to packaging for fine-stone round surface fountains. Moreover, the extra cost should not be higher than 20% compared with the current packaging cost. The article proposes a simplified way that focuses on the combination of quality tools in the PDCA multiple phases to solve these problems. The quality tools are applied effectively through the PDCA cycle from collecting data, defining, analysis, testing, evaluation, and making decisions. New packaging design was been produced and tested successfully. One hundred percent of new packaging boxes for the mid-weight fountains (under 15 kg) passed the dropping test condition. Nearly 10% of the heavier weight products (above 15 kg) still had some small cracks on their top and bottom due to drop tests. Another PDCA cycle is recommended to continue applying for achieving a thorough solution. The conducted results show that PDCA is an effective method to tackle the damage product issue due to inappropriate packaging material and technique. It also brings good solutions for balancing sustainable packaging improvement and reducing the cost to ensure profit for companies. Besides contributing a guide reference for PDCA deployment, the authors intend to inspire practitioners and researchers to broaden exploration of the PDCA applications for sustainable packaging methodology. The research analysis shows that the PDCA methodology should be applied for defect reduction and quality enhancement in the packaging field. The field currently lacks systematic guidance for continuous improvement.
Study on Susceptibilities of Superconductors BaPtSb and BaPtAs with Honeycomb Structure
Creators: name: Furutani, Naoya
name: Imai, Yoshiki
name: Imazu, Tsuyoshi
name: Goryo, Jun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The low-energy electronic properties of the new superconductors BaPtSb and BaPtAs with an ordered honeycomb network are investigated in the normal phase, where the former compound is a candidate for time-reversal symmetry-breaking superconductors. By means of the first-principles calculation, we show that there exist two-dimensional cylinder-like Fermi surfaces around the kz axis and one outer spherelike Fermi surface around the K and K' points in both compounds, which are mainly composed of Pt 5d and Sb 5p/As 4p electrons. We construct low-energy effective models, which are well described by using three bands consisting of two Pt 5d orbitals and one Sb 5p/As 4p orbital. By evaluating susceptibilities using effective models, we find that dominant contributions to those susceptibilities result from the outer spherelike Fermi surface. Whereas out-of-plane fluctuations are enhanced in both compounds in the higher-temperature region, in-plane fluctuations become dominant in the very low-temperature region in BaPtSb owing to a better nesting condition in the k_z=0 plane from the outer spherelike Fermi surface. These fluctuations yield instabilities to ordered states, such as superconductivity, and might be associated with the occurrence of the superconducting state with time-reversal symmetry breaking in BaPtSb.
description: 7 pages, 9 figures
Perovskite quantum dot topological laser
Creators: name: Tian, Jingyi
name: Tan, Qi Ying
name: Wang, Yutao
name: Yang, Yihao
name: Yuan, Guanghui
name: Adamo, Giorgio
name: Soci, Cesare
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Various topological laser concepts have recently enabled the demonstration of robust light-emitting devices that are immune to structural deformations and tolerant to fabrication imperfections. Current realizations of photonic cavities with topological boundaries are often limited by outcoupling issues or poor directionality and require complex design and fabrication that hinder operation at small wavelengths. Here we propose a topological cavity design based on interface states between two one-dimensional photonic crystals with distinct Zak phases and demonstrate a lithography-free, single-mode perovskite laser emitting in the green. Few monolayers of solution processed all-inorganic cesium lead halide perovskite quantum dots are used as ultrathin gain medium. The topological laser has planar design with large output aperture, akin to vertical-cavity surface-emitting lasers (VCSELs) and is robust against variations of the thickness of the gain medium, from deeply subwavelength to thick quantum dot films. This experimental observation also unveils the topological nature of VCSELs, that is usually overlooked in the description of conventional Fabry-Perot cavity lasers. The design simplicity and topological characteristics make this perovskite quantum dot laser architecture suitable for low-cost and fabrication tolerant vertical emitting lasers operating across the visible spectral region.
Investigation of conventional and Super-X divertor configurations of MAST Upgrade using SOLPS
Creators: name: Havlickova, E
name: Fundamenski, W
name: Wischmeier, M
name: Fishpool, G
name: Morris, A W
Publisher: name: arXiv
Year: 2014
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: One of the first studies of MAST Upgrade divertor configurations with SOLPS5.0 are presented. We focus on understanding main prospects associated with the novel geometry of the Super-X divertor (SXD). This includes a discussion of the effect of magnetic flux expansion and volumetric power losses on the reduction of target power loads, the effect of divertor geometry on the divertor closure and distribution of neutral species and radiation in the divertor, the role of the connection length in broadening the target wetted area. A comparison in conditions typical for MAST inter-ELM H-mode plasmas confirms improved performance of the Super-X topology resulting in significantly better divertor closure with respect to neutrals (the atomic flux from the target increased by a factor of 6, but the atomic flux from the divertor to the upper SOL reduced by a factor of 2), increased radiation volume and increased total power loss (a factor of 2) and a reduction of target power loads through both magnetic flux expansion and larger volumetric power loss in the divertor (a factor of 5-10 in attached plasmas). The reduction of the target power load by SXD further increases with collisionality (high density or detached regimes) thanks to larger importance of volumetric power losses. It is found that a cold divertor plasma leads to stronger parallel temperature gradients in the SOL which drive more parallel heat flux, meaning that the effectiveness of perpendicular transport in spreading the power at the target can be reduced, and this needs to be taken into account in any optimisation.
description: 32 pages, 23 figures. This is an author-created, un-copyedited version of an article accepted for publication in PPCF. IOP Publishing Ltd and IAEA are not responsible for any errors or omissions in this version of the manuscript or any version derived from it
SOX9 and SOX10 control fluid homeostasis in the inner ear for hearing through independent and cooperative mechanisms.
Creators: name: Szeto, Irene YY
name: Chu, Daniel KH
name: Chen, Peikai
name: Chu, Ka Chi
name: Au, Tiffany YK
name: Leung, Keith KH
name: Huang, Yong-Heng
name: Wynn, Sarah L
name: Mak, Angel CY
name: Chan, Ying-Shing
name: Chan, Wood Yee
name: Jauch, Ralf
name: Fritzsch, Bernd
name: Sham, Mai Har
name: Lovell-Badge, Robin
name: Cheah, Kathryn SE
Publisher: name: The Francis Crick Institute
Year: 2022
Subjects: subject: Neurosciences
subject: FOS: Clinical medicine
subject: Model organisms
subject: Tumour Biology
subject: Genetics & Genomics
subject: Developmental Biology
subject: Stem Cells

description: The in vivo mechanisms underlying dominant syndromes caused by mutations in SRY-Box Transcription Factor 9 (SOX9) and SOX10 (SOXE) transcription factors, when they either are expressed alone or are coexpressed, are ill-defined. We created a mouse model for the campomelic dysplasia SOX9Y440X mutation, which truncates the transactivation domain but leaves DNA binding and dimerization intact. Here, we find that SOX9Y440X causes deafness via distinct mechanisms in the endolymphatic sac (ES)/duct and cochlea. By contrast, conditional heterozygous Sox9-null mice are normal. During the ES development of Sox9Y440X/+ heterozygotes, Sox10 and genes important for ionic homeostasis are down-regulated, and there is developmental persistence of progenitors, resulting in fewer mature cells. Sox10 heterozygous null mutants also display persistence of ES/duct progenitors. By contrast, SOX10 retains its expression in the early Sox9Y440X/+ mutant cochlea. Later, in the postnatal stria vascularis, dominant interference by SOX9Y440X is implicated in impairing the normal cooperation of SOX9 and SOX10 in repressing the expression of the water channel Aquaporin 3, thereby contributing to endolymphatic hydrops. Our study shows that for a functioning endolymphatic system in the inner ear, SOX9 regulates Sox10, and depending on the cell type and target gene, it works either independently of or cooperatively with SOX10. SOX9Y440X can interfere with the activity of both SOXE factors, exerting effects that can be classified as haploinsufficient/hypomorphic or dominant negative depending on the cell/gene context. This model of disruption of transcription factor partnerships may be applicable to congenital deafness, which affects ∼0.3% of newborns, and other syndromic disorders.
PROCEDURY I NARZĘDZIA ZARZĄDZANIA W SYTUACJACH KRYZYSOWYCH NA PODSTAWIE BADAŃ JAKOŚCIOWYCH
Creators: name: Tworzydło, Dariusz
Publisher: name: figshare
Year: 2022
Subjects: subject: 200104 Media Studies
subject: FOS: Media and communications

description: Selected procedures and tools that are used in crisis situations will be presented in this article. This presentation will be based on the results of qualitative research as well as the analysis of entries in selected reference literature that discuss the issue of preparing for crises and crisis management. The article aims to show that limited but effective crisis management is possible when it arrives but a far better approach is preparing the organisation for the eventuality of a crisis situation in a manner that facilitates reaction. However, effectiveness should be examined in two aspects in this case, firstly, preventing the crisis from escalating or going beyond the walls of the company or management board office, or mitigating its possible negative effects.
Gravitational wave constraints on extended dark matter structures
Creators: name: Croon, Djuna
name: Ipek, Seyda
name: McKeen, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We generalise existing constraints on primordial black holes to dark objects with extended sizes using the aLIGO design sensitivity. We show that LIGO is sensitive to dark objects with radius $O(10-10^3~{\rm km})$ if they make up more than $\sim O(10^{-2}-10^{-3})$ of dark matter.
description: 7 pages, 3 figures. Version accepted in PRD
Oscillator models of the solar cycle: Towards the development of inversion methods
Creators: name: Lopes, Ilídio
name: Passos, Dário
name: Nagy, Melinda
name: Petrovay, Kristof
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: This article reviews some of the leading results obtained in solar dynamo physics by using temporal oscillator models as a tool to interpret observational data and dynamo model predictions. We discuss how solar observational data such as the sunspot number is used to infer the leading quantities responsible for the solar variability during the last few centuries. Moreover, we discuss the advantages and difficulties of using inversion methods (or backward methods) over forward methods to interpret the solar dynamo data. We argue that this approach could help us to have a better insight about the leading physical processes responsible for solar dynamo, in a similar manner as helioseismology has helped to achieve a better insight on the thermodynamic structure and flow dynamics in the Sun's interior.
description: 28 pages; 16 figures, ISSI Workshop 11-15 November 2013 - The Solar Cycle, http://www.issibern.ch/program/workshops.html
Lifestyle and eating habits in a business community
Creators: name: (:Unkn) Unknown
Publisher: name: Universita' degli Studi di Salerno
Year: 2014

description: PURPOSE: The present study verified, using a validated questionnaire, the presence of unhealthy aspects of lifestyle and chronic degenerative conditions in a working community. METHODS: A cohort from a working community in Italy was investigated using of the INRAN (Istituto Nazionale di Ricerca per gli Alimenti e Nutrizione) questionnaire dedicated to the eating habits and Physical Activity Stages of Change. RESULTS: Most of the 93 subjects (56 females and 37 males, aged 42.0±0.7) recruited reported low levels of physical activity (70 subjects). Slightly more than 50% of the subjects undertook physical activity more than once a week, while 13% did it only once. Food intolerances were reported by 7 subjects (8%), with a high consumption of fruits, cereals and dairy products, low consumption of fish and alcohol, and meat consumption in the normal range. There was a high satisfaction in general quality of life. CONCLUSION: Questionnaire investigations play a role to identify the presence of degenerative chronic conditions in working communities. The self-reported perception of quality of life does not necessarily agree with the lifestyle habits found. Awareness of this aspect could be helpful to plan lifestyle interventions and promote healthy living habits.
Scalable Hierarchical Instruction Cache for Ultra-Low-Power Processors Clusters
Creators: name: Chen, Jie
name: Loi, Igor
name: Flamand, Eric
name: Tagliavini, Giuseppe
name: Benini, Luca
name: Rossi, Davide
Publisher: name: arXiv
Year: 2023
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: High Performance and Energy Efficiency are critical requirements for Internet of Things (IoT) end-nodes. Exploiting tightly-coupled clusters of programmable processors (CMPs) has recently emerged as a suitable solution to address this challenge. One of the main bottlenecks limiting the performance and energy efficiency of these systems is the instruction cache architecture due to its criticality in terms of timing (i.e., maximum operating frequency), bandwidth, and power. We propose a hierarchical instruction cache tailored to ultra-low-power tightly-coupled processor clusters where a relatively large cache (L1.5) is shared by L1 private caches through a two-cycle latency interconnect. To address the performance loss caused by the L1 capacity misses, we introduce a next-line prefetcher with cache probe filtering (CPF) from L1 to L1.5. We optimize the core instruction fetch (IF) stage by removing the critical core-to-L1 combinational path. We present a detailed comparison of instruction cache architectures' performance and energy efficiency for parallel ultra-low-power (ULP) clusters. Focusing on the implementation, our two-level instruction cache provides better scalability than existing shared caches, delivering up to 20\% higher operating frequency. On average, the proposed two-level cache improves maximum performance by up to 17\% compared to the state-of-the-art while delivering similar energy efficiency for most relevant applications.
description: 14 pages
A One-Factor Conditionally Linear Commodity Pricing Model under Partial Information
Creators: name: Kato, Takashi
name: Sekine, Jun
name: Yamamoto, Hiromitsu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Pricing of Securities (q-fin.PR)
subject: Mathematical Finance (q-fin.MF)
subject: FOS: Economics and business
subject: 91G20, 60J70, 93C41

description: A one-factor asset pricing model with an Ornstein--Uhlenbeck process as its state variable is studied under partial information: the mean-reverting level and the mean-reverting speed parameters are modeled as hidden/unobservable stochastic variables. No-arbitrage pricing formulas for derivative securities written on a liquid asset and exponential utility indifference pricing formulas for derivative securities written on an illiquid asset are presented. Moreover, a conditionally linear filtering result is introduced to compute the pricing/hedging formulas and the Bayesian estimators of the hidden variables.
description: 21 pages
ALMA Confirmation of an Obscured Hyperluminous Radio-Loud AGN at $z=6.853$ Associated with a Dusty Starburst in the 1.5 deg$^2$ COSMOS Field
Creators: name: Endsley, Ryan
name: Stark, Daniel P.
name: Lyu, Jianwei
name: Wang, Feige
name: Yang, Jinyi
name: Fan, Xiaohui
name: Smit, Renske
name: Bouwens, Rychard
name: Hainline, Kevin
name: Schouws, Sander
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present band 6 ALMA observations of a heavily-obscured radio-loud ($L_{1.4\ \mathrm{GHz}}=10^{25.4}$ W Hz$^{-1}$) AGN candidate at $z_\mathrm{phot}=6.83\pm0.06$ found in the 1.5 deg$^2$ COSMOS field. The ALMA data reveal detections of exceptionally strong [CII]158$μ$m ($z_\mathrm{[CII]}=6.8532$) and underlying dust continuum emission from this object (COS-87259), where the [CII] line luminosity, line width, and 158$μ$m continuum luminosity are comparable to that seen from $z\sim7$ sub-mm galaxies and quasar hosts. The 158$μ$m continuum detection suggests a total infrared luminosity of $9\times10^{12}$ $L_\odot$ with corresponding very large obscured star formation rate (1300 $M_\odot$/yr) and dust mass ($2\times10^9$ $M_\odot$). The strong break seen between the VIRCam and IRAC photometry perhaps suggests that COS-87259 is an extremely massive reionization era galaxy with $M_\ast\approx1.7\times10^{11}$ $M_\odot$. Moreover, the MIPS, PACS, and SPIRE detections imply that this object harbors an AGN that is heavily obscured ($τ_{_{\mathrm{9.7μm}}}=2.3$) with a bolometric luminosity of approximately $5\times10^{13}$ $L_\odot$. Such a very high AGN luminosity suggests this object is powered by an $\approx$1.6 $\times$ 10$^9$ $M_\odot$ black hole if accreting near the Eddington limit, and is effectively a highly-obscured version of an extremely UV-luminous ($M_{1450}\approx-27.3$) $z\sim7$ quasar. Notably, these $z\sim7$ quasars are an exceedingly rare population ($\sim$0.001 deg$^{-2}$) while COS-87259 was identified over a relatively small field. Future very wide-area surveys with, e.g., Roman and Euclid have the potential to identify many more extremely red yet UV-bright $z\gtrsim7$ objects similar to COS-87259, providing richer insight into the occurrence of intense obscured star formation and supermassive black hole growth among this population.
description: 12 pages, 7 figures, 1 table. Updated to accepted version (MNRAS)
Prospects for extending the core-collapse supernova detection horizon using high-energy neutrinos
Creators: name: Valtonen-Mattila, Nora
name: O'Sullivan, Erin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Large neutrino detectors like IceCube monitor for core-collapse supernovae using low energy (MeV) neutrinos, with a reach to a supernova neutrino burst to the Magellanic Cloud. However, some models predict the emission of high energy neutrinos (GeV-TeV) from core-collapse supernovae through the interaction of ejecta with circumstellar material and (TeV-PeV) through choked jets. In this paper, we explore the detection horizon of IceCube for core-collapse supernovae using high-energy neutrinos from these models. We examine the potential of two high-energy neutrino data samples from IceCube, one that performs best in the northern sky and one that has better sensitivity in the southern sky. We demonstrate that by using high-energy neutrinos from core-collapse supernovae, the detection reach can be extended to the Mpc range, far beyond what is accessible through low-energy neutrinos. Looking ahead to IceCube-Gen2, this reach will be extended considerably.
description: 9 pages, 2 figures. Accepted for publication in ApJ
A categorification of the Alexander polynomial in embedded contact homology
Creators: name: Spano, Gilberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: Given a transverse knot $K$ in a three dimensional contact manifold $(Y,α)$, in [13] Colin, Ghiggini, Honda and Hutchings define a hat version of embedded contact homology for $K$, that we call $\widehat{ECK}(K,Y,α)$, and conjecture that it is isomorphic to the knot Floer homology $\widehat{HFK}(K,Y)$. We define here a full version $ECK(K,Y,α)$ and generalise the definitions to the case of links. We prove then that, if $Y = S^3$, $ECK$ and $\widehat{ECK}$ categorify the (multivariable) Alexander polynomial of knots and links, obtaining expressions analogue to that for knot and link Floer homologies in the plus and, respectively, hat versions.
description: 48 pages, 4 figures
Constructions of Optimal and Almost Optimal Locally Repairable Codes
Creators: name: Ernvall, Toni
name: Westerbäck, Thomas
name: Hollanti, Camilla
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Constructions of optimal locally repairable codes (LRCs) in the case of $(r+1) \nmid n$ and over small finite fields were stated as open problems for LRCs in [I. Tamo \emph{et al.}, "Optimal locally repairable codes and connections to matroid theory", \emph{2013 IEEE ISIT}]. In this paper, these problems are studied by constructing almost optimal linear LRCs, which are proven to be optimal for certain parameters, including cases for which $(r+1) \nmid n$. More precisely, linear codes for given length, dimension, and all-symbol locality are constructed with almost optimal minimum distance. `Almost optimal' refers to the fact that their minimum distance differs by at most one from the optimal value given by a known bound for LRCs. In addition to these linear LRCs, optimal LRCs which do not require a large field are constructed for certain classes of parameters.
description: 5 pages, conference
Excitation picture of an interacting Bose gas
Creators: name: Kira, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Atomic Bose-Einstein condensates (BECs) can be viewed as macroscopic objects where atoms form correlated atom clusters to all orders. Therefore, the presence of a BEC makes the direct use of the cluster-expansion approach --- lucrative e.g. in semiconductor quantum optics --- inefficient when solving the many-body kinetics of a strongly interacting Bose. An excitation picture is introduced with a nonunitary transformation that exclusively describes the system in terms of atom clusters within the normal component alone. The nontrivial properties of this transformation are systematically studied, which yields a cluster-expansion friendly formalism for a strongly interacting Bose gas. Its connections and corrections to the standard Hartree-Fock Bogoliubov approach are discussed and the role of the order parameter and the Bogoliubov excitations are identified. The resulting interaction effects are shown to visibly modify number fluctuations of the BEC. Even when the BEC has a nearly perfect second-order coherence, the BEC number fluctuations can still resolve interaction-generated non-Poissonian fluctuations.
description: 58 pages, 6 figures
Alfa & Omega Prime Number Theory.pdf
Creators: name: Olvin Dsouza
Publisher: name: figshare
Year: 2020
Subjects: subject: 10199 Pure Mathematics not elsewhere classified
subject: FOS: Mathematics

description: This research is all about the biggest question... is it possible that without using factorization method can we find two prime numbers factors of any given product (composite number)? Answer is yes.... We have found the formula method that proves how additive property of prime numbers has direct relation with its multiplicative property and how it can help to find any two multiplied prime factors of given composite number.
The StasHH Fuel-Cell Module Standard
Creators: name: Zenith, Federico
Publisher: name: Zenodo
Year: 2022
Subjects: fuel cell
module
standard
size
interface
digital

description: This paper describes and motivates a standard for heavy-duty hydrogen fuel-cell modules in terms of their form factors and interfaces, both physical and digital. The goal is that the standardised fuel cell modules shall be suitable for multiple applications such as ships, trains, stationary generator sets in addition to heavy duty vehicles. While standards have been developed for test protocols, safety, and fuelling operations, little to no work has been done to define an interchangeable standard for fuel-cell modules. Such a standard can prove decisive to pool several heavy-duty markets together, accelerate design and realisation of hydrogen vehicles, enable competition among fuel-cell module manufacturers, and reduce their total cost of ownership. The StasHH project is developing prototypes from eight major manufacturers and will test them during 2023.
New analytic solutions in String Field Theory: towards collective Higher Spin vacuum
Creators: name: Polyakov, Dimitri
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct analytic solutions in cubic open superstring field theory at higher superconformal ghost numbers.The solutions are the pure ghost ones and are given by combinations of Bell polynomials of bosonized superconformal ghost fields multiplied by exponents of the bosonized ghosts. Based on the structure of the solutions, we conjecture them to describe the ghost part of collective vacuum for higher spin modes in open string theory.
description: 21 pages