cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Dosimetría a trabajadores en procedimientos de Radiología Dosimetría a trabajadores en procedimientos de Radiología Intervencionista. Un estudio con TLDs.
Creators: name: Zarca diaz de la espina ,miguel angel , Miguel angel
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Radioprotection / Radiation dose
subject: Interventional vascular
subject: Catheter arteriography
subject: Percutaneous
subject: Angioplasty
subject: Embolisation
subject: Dosimetry

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Identificar los procedimientos de mayor riesgo de dosis en los procedimientos de Radiología Intervencionista Vascular
Establecer un procedimiento para monitorizar la dosis en cristalino para los profesionales expuestos en los procedimientos...
title: Actualización de la terminología radiológica en las pancreatitis agudas.
Creators: name: López Ruiz, Daniel José
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Pancreas
subject: CT
subject: Ultrasound
subject: MR

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Revisar los criterios propuestos por la nueva clasificación de Atlanta con el objetivo de estandarizar la terminología radiológica en el contexto de las pancreatitis agudas (PA). Conocer nuevos aspectos de la enfermedad que tienen impacto en el...
Strategies to simulate dephasing-assisted quantum transport on digital quantum computers
Creators: name: Gallina, Federico
name: Bruschi, Matteo
name: Fresch, Barbara
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Simulating charge and energy transfer in extended molecular networks requires an effective model to include the environment because it significantly affects the quantum dynamics. A prototypical effect known as Environment-Assisted Quantum Transport (ENAQT) consists in the modulation and sometimes enhancement of the transfer efficiency by the interaction with an environment. A simple description of this phenomenon is obtained by a quantum master equation describing a quantum walk over the molecular network in the presence of inter-site decoherence. We consider the problem of simulating the dynamics underlying ENAQT in a digital quantum computer. Two different quantum algorithms are introduced, the first one based on stochastic Hamiltonians and the second one based on a collision scheme. We test both algorithms by simulating ENAQT in a small molecular network on a quantum computer emulator and provide a comparative analysis of the two approaches. Both algorithms can be implemented in a memory efficient encoding with the number of required qubits scaling logarithmically with the size of the simulated system while the number of gates increases quadratically. We discuss the algorithmic quantum trajectories generated by the two simulation strategies showing that they realize distinct unravellings of the site-dephasing master equation. In our approach, the non-unitary dynamics of the open system is obtained through effective representations of the environment, paving the way to digital quantum simulations of quantum transport influenced by structured environments.
title: Incidencia de complicaciones relacionadas al PICC durante y posterior a su colocación.
Creators: name: Uchiyamada, Jorge
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Interventional vascular
subject: Veins / Vena cava
subject: Vascular
subject: Catheter venography
subject: Ultrasound-Colour Doppler
subject: Catheters
subject: Venous access
subject: Statistics
subject: FOS: Mathematics

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Hoy en día disponer de un acceso venoso central es una necesidad básica en los pacientes en estado crítico como oncológicos,
para su correcto manejo terapéutico.
Estos catéteres de acceso por la vena subclavia,
yugular interna o femoral por lo...
Measuring Intellectual Capital in Research Centre: an application of the extended VAIC model
Creators: name: Evangelista, Ludovica
name: Izzo, Teresa
name: Russo, Antonella
name: Risaliti, Gianluca
Publisher: name: Economia Aziendale Online -
Year: 2025
Subjects: value-added intellectual coefficient, intellectual capital, IC measurement, IC valuation, Research Technology Centre, knowledge-intensive organisation, Case study

description: In the contemporary knowledge-driven economy, intellectual capital (IC) is vital for research technology centres (RTC). This study applies the extended VAIC model to evaluate the IC of an Italian RTC. Extended model, incorporating additional dimensions such as relational and innovation capital efficiency, is adapted to the unique needs of RTCs. Utilizing a single case study methodology, financial reporting data, and management insights, the study assesses the value creation of Alpha's IC and management' perception of the effectiveness of the IC measure. Results indicate that most part of the value added to Alpha by IC is based on the human capital. The perception of the management of the IC measure using the VAIC confirmed some of the limitations of a model based mainly on financial reporting figures. This paper contributes to literature and practices in measuring IC providing recommendations on how to fill the gap in existing IC measurement for research centres, providing a comprehensive tool for strategic IC management.
description: Economia Aziendale Online -, Vol 16, No 1 (2025): ISSUE 1/2025
Photon escape in the extremal Kerr black hole spacetime
Creators: name: Ogasawara, Kota
name: Igata, Takahisa
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider necessary and sufficient conditions for photons emitted from an arbitrary spacetime position of the extremal Kerr black hole to escape to infinity. The radial equation of motion determines the necessary conditions for photons emitted from $r=r_*$ to escape to infinity, and the polar angle equation of motion further restricts the allowed region of photon motion. From these two conditions, we provide a method to visualize a two-dimensional photon impact parameter space that allows photons to escape to infinity, i.e., the escapable region. Finally, we completely identify the escapable region for the extremal Kerr black hole spacetime. This study has generalized our previous result [K.~Ogasawara and T.~Igata, Phys. Rev. D \textbf{103}, 044029 (2021)], which focused only on light sources near the horizon, to the classification covering light sources in the entire region.
description: 17pages, 23figures
Determination of $B_K$ using improved staggered fermions (II) SU(2) chiral perturbation theory fit
Creators: name: Kim, Hyung-Jin
name: Bae, Taegil
name: Kim, Jangho
name: Kim, Jongjeong
name: Kim, Kwangwoo
name: Yoon, Boram
name: Lee, Weonjong
name: Jung, Chulwoo
name: Sharpe, Stephen R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results for $B_K$ calculated using HYP-smeared improved staggered fermions on the MILC asqtad lattices. In this report, the data is analyzed using the results of SU(2) staggered chiral perturbation theory (SChPT). We outline the derivation of the NLO SU(2) SChPT result, explain our fitting procedure, and outline how we estimate systematic errors. We also show the light sea-quark mass and lattice spacing dependence for both SU(2) and SU(3)-based analyses. Our preliminary result from the SU(2) analysis is $B_K(\text{NDR}, μ= 2 \text{GeV}) = 0.512 \pm 0.014 \pm 0.034$ and $\hat{B}_K = B_K(\text{RGI})= 0.701 \pm 0.019 \pm 0.047$. This is somewhat more accurate than our result from the SU(3) analysis. It is consistent with results obtained using valence domain-wall fermions
description: 7 pages, 6 figures, Lattice 2009 proceeding
Analisi tridimensionale priva di contatto delle ulcere cutanee laser assistita
Creators: name: Bianchi, Tommaso <1974>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2007
Subjects: MED/35 Malattie cutanee e veneree

description: La valutazione progressiva e il monitoraggio di una ferita difficile impongono misurazioni periodiche per valutare in modo qualitativo e quantitativo l'esistenza e l'entita della riepitelizzazione in rapporto alle pratiche terapeutiche effettuate. L'entità della guarigione nei primi 1530 giorni di trattamento, intesa come riduzione di area percentuale, nelle lesioni ulcerative di origine venosa
permette secondo alcuni autori della letteratura scientifica, di avere delle informazioni prognostiche
di guarigione completa a sei mesi. Altri autori invece mostrano casistiche analoghe indicando come nelle ulcere venose non si possa predire con facilità la guarigione a sei mesi.Le metodiche di misurazione delle ferite possono essere suddivise in bidimensionali e tridimensionali: nel primo gruppo troviamo la misurazione semplice, le metodiche di tracciamento, planimetria, analisi fotografica analogica e digitale. Queste metodiche misurano i diametri, il perimetro e l'area delle ferite. Nel secondo gruppo si collocano l'uso di righello Kundin, le metodiche di riempimento con alginato o con soluzione fisiologica, le metodiche stereofotogrammetriche e l'uso di strumenti laser.
Queste metodiche permettono di calcolare con varie approssimazioni anche il volume delle ferite studiate. La tesi ha preso in esame un gruppo di 17 pazienti affetti da ulcere venose croniche effettuando misurazioni con lo strumento più accurato e preciso disponibile (minolta Vivid 900 laser + sensore) e acquisendo i dati con il software Derma. I pazienti sono stati misurati al primo
accesso in ambulatorio, dopo 15 giorni e dopo sei mesi. Sono stati acquisiti i dati di area, perimetro, volume, profondità e guarigione a 6 mesi. L'analisi statistica condotta con modalità non parametriche di analisi dei ranghi non ha associato nessuno di questi valori ne' valori derivati ( delta V /delta A; Delta V/ Delta P) alla guarigione a 6 mesi. Secondo le analisi da noi effettuate, sebbene con l'incertezza derivata da un gruppo ridotto di pazienti, la guarigione delle lesioni ulcerative
venose non è predicibile a 6 mesi utilizzando sistemi di misurazione di dimensioni, area e volume.
Optimization and NP_R-Completeness of Certain Fewnomials
Creators: name: Pebay, Philippe
name: Rojas, J. Maurice
name: Thompson, David C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Algebraic Geometry (math.AG)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We give a high precision polynomial-time approximation scheme for the supremum of any honest n-variate (n+2)-nomial with a constant term, allowing real exponents as well as real coefficients. Our complexity bounds count field operations and inequality checks, and are polynomial in n and the logarithm of a certain condition number. For the special case of polynomials (i.e., integer exponents), the log of our condition number is quadratic in the sparse encoding. The best previous complexity bounds were exponential in the sparse encoding, even for n fixed. Along the way, we extend the theory of A-discriminants to real exponents and certain exponential sums, and find new and natural NP_R-complete problems.
description: 9 pages, 7 figures (3 of them tiny). This is close to the final conference proceedings version
Self-induced hydrodynamic coil-stretch transition of active polymers
Creators: name: Mahajan, Achal
name: Saintillan, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We analyze the conformational dynamics and statistical properties of an active polymer model. The polymer is described as a freely-jointed bead-rod chain subject to stochastic active force dipoles that act on the suspending solvent where they drive long-ranged fluid flows. Using Langevin simulations of isolated chains in unconfined domains, we show how the coupling of active flows with polymer conformations leads to emergent dynamics. Systems with contractile dipoles behave similarly to passive Brownian chains with enhanced fluctuations due to dipolar flows. In systems with extensile dipoles, however, our simulations uncover an active coil-stretch transition whereby the polymer spontaneously unfolds and stretches out in its own self-induced hydrodynamic flow, and we characterize this transition in terms of a dimensionless activity parameter comparing active dipolar forces to thermal fluctuations. We discuss our findings in the context of the classic coil-stretch transition of passive polymers in extensional flows, and complement our simulations with a simple kinetic model for an active trimer.
description: 11 pages, 8 figures
Discovery of a 30 day period in the supergiant fast X-ray transient SAX J1818.6-1703
Creators: name: Bird, A. J.
name: Bazzano, A.
name: Hill, A. B.
name: McBride, V. A.
name: Sguera, V.
name: Shaw, S. E.
name: Watkins, H. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: SAX J1818.6-1703 has been characterised as a Supergiant Fast X-ray Transient system on the basis of several INTEGRAL/IBIS detections since the original BeppoSAX Wide Field Camera detection. Using IBIS/ISGRI, Swift/BAT and archival observations, we show that in fact SAX J1818.6-1703 exhibits emission on a period of 30 +/- 0.1 days, with a high degree of recurrence. SAX J1818.6-1703 is therefore the second SFXT shown to exhibit periodic outbursts, but with a considerably shorter period than the other known system, IGR J11215-5952.
description: 5 pages, 5 figures, 2 tables. Accepted for publication in MNRAS letters
Superficial mould brachytherapy device design and treatment planning using 3D scanning data
Creators: name: Crowe, Scott
name: Simpson-Page, Emily
name: Luscombe, Jenna
name: Wilks, Rachael
name: Kairn, Tanya
Publisher: name: Zenodo
Year: 2021
Subjects: brachytherapy
3D scanning
radiotherapy

description: Conference poster describing the use of an Artec Leo optical scanner for the design of superficial brachytherapy moulds and treatment plans.
Luminescent Systems for Genomics and Proteomics
Creators: name: Marzocchi, Ettore <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: CHIM/03 Chimica generale e inorganica

description: The present PhD project was focused on the development of new tools and methods for luminescence-based techniques. In particular, the ultimate goal was to present substantial improvements to the currently available technologies for both research and diagnostic in the fields of biology, proteomics and genomics.

Different aspects and problems were investigated, requiring different strategies and approaches. The whole work was thus divided into separate chapters, each based on the study of one specific aspect of luminescence: Chemiluminescence, Fluorescence and Electrochemiluminescence.

CHAPTER 1, Chemiluminescence
The work on luminol-enhancer solution lead to a new luminol solution formulation with 1 order of magnitude lower detection limit for HRP. This technology was patented with Cyanagen brand and is now sold worldwide for Western Blot and ELISA applications.

CHAPTER 2, Fluorescescence
The work on dyed-doped silica nanoparticles is marking a new milestone in the development of nanotechnologies for biological applications. While the project is still in progress, preliminary studies on model structures are leading to very promising results. The improved brightness of these nano-sized objects, their simple synthesis and handling, their low toxicity will soon turn them, we strongly believe, into a new generation of fluorescent labels for many applications.

CHAPTER 3, Electrochemiluminescence
The work on electrochemiluminescence produced interesting results that can potentially turn into great improvements from an analytical point of view. Ru(bpy)3 derivatives were employed both for on-chip microarray (Chapter 3.1) and for microscopic imaging applications (Chapter 3.2). The development of these new techniques is still under investigation, but the obtained results confirm the possibility to achieve the final goal. Furthermore the development of new ECL-active species (Chapter 3.3, 3.4, 3.5) and their use in these applications can significantly improve overall performances, thus helping to spread ECL as powerful analytical tool for routinary techniques.

To conclude, the results obtained are of strong value to largely increase the sensitivity of luminescence techniques, thus fulfilling the expectation we had at the beginning of this research work.
Board gender diversity and intellectual capital disclosure as strategic resources: Insights from family and non-family firms
Creators: name: Gotti, Giacomo
Publisher: name: Economia Aziendale Online -
Year: 2025
Subjects: Intellectual capital disclosure, Family firm, Gender diversity, Agency theory, Resource-dependency theory

description: Purpose. This research examines the short-term connection between intellectual capital disclosure (ICD) and gender diversity within the board of directors, specifically considering the role of family status. This study highlights the distinctive features of family-owned firms, which tend to adopt a different approach to diversity than non-family firms, impacting their ICD practices. Methodology. A mixed-method approach is adopted. First, content analysis is conducted on non-financial reports of Italian-listed firms to generate an ICD index. The second part involves an OLS regression to test the relationship between the ICD and board gender diversity (proxied by the BLAU index) by considering the moderation role played by a dummy variable for family ownership. Findings. The results demonstrate that board gender diversity affects ICD differently, depending on the firm family status. Specifically, while diversity is positively associated with ICD in family firms, this effect is negatively moderated in non-family ones. Implications. From a managerial perspective, this study provides recommendations for family firms to improve the integration of diverse perspectives within their boards, enhancing their ICD practices. From a theoretical perspective, results support the “resource dependency theory”, which posits that diverse boards provide critical external resources, improving disclosure.
description: Economia Aziendale Online -, Vol 16, No 1 (2025): ISSUE 1/2025
D-Brane Potentials from Multi-Trace Deformations in AdS/CFT
Creators: name: Bernamonti, Alice
name: Craps, Ben
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is known that certain AdS boundary conditions allow smooth initial data to evolve into a big crunch. To study this type of cosmological singularity, one can use the dual quantum field theory, where the non-standard boundary conditions are reflected by the presence of a multi-trace potential unbounded below. For specific AdS_4 and AdS_5 models, we provide a D-brane (or M-brane) interpretation of the unbounded potential. Using probe brane computations, we show that the AdS boundary conditions of interest cause spherical branes to be pushed to the boundary of AdS in finite time, and that the corresponding potential agrees with the multi-trace deformation of the dual field theory. Systems with expanding spherical D3-branes are related to big crunch supergravity solutions by a phenomenon similar to geometric transition.
description: 26 pages, 3 figures, v4: a few typos fixed.
Stark effect, polarizability and electroabsorption in silicon nanocrystals
Creators: name: Bulutay, Ceyhun
name: Kulakci, Mustafa
name: Turan, Raşit
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Demonstrating the quantum-confined Stark effect (QCSE) in silicon nanocrystals (NCs) embedded in oxide has been rather elusive, unlike the other materials. Here, the recent experimental data from ion-implanted Si NCs is unambiguously explained within the context of QCSE using an atomistic pseudopotential theory. This further reveals that the majority of the Stark shift comes from the valence states which undergo a level crossing that leads to a nonmonotonic radiative recombination behavior with respect to the applied field. The polarizability of embedded Si NCs including the excitonic effects is extracted over a diameter range of 2.5--6.5 nm, which displays a cubic scaling, $α=c D^3$, with $c=2.436\times 10^{-11}$ C/(Vm), where $D$ is the NC diameter. Finally, based on intraband electroabsorption analysis, it is predicted that p-doped Si NCs will show substantial voltage tunability, whereas n-doped samples should be almost insensitive. Given the fact that bulk silicon lacks the linear electro-optic effect as being a centrosymmetric crystal, this may offer a viable alternative for electrical modulation using p-doped Si NCs.
description: Published version, 7 pages, 7 figures
Coherent Transport of Atomic Quantum States in a Scalable Shift Register
Creators: name: Lengwenus, A.
name: Kruse, J.
name: Schlosser, M.
name: Tichelmann, S.
name: Birkl, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate the coherent transport of two-dimensional (2D) arrays of small ensembles of neutral atoms in a shift register architecture based on 2D arrays of microlenses. We show the scalability of the transport process by presenting the repeated hand-over of atoms from site to site. We prove the conservation of coherence during transport, reloading, and a full shift register cycle. This shows that the fundamental shift sequence can be cascaded and thus scaled to complex and versatile 2D architectures for atom-based quantum information processing, quantum simulation, and the investigation of quantum degenerate gases.
Till cash management model
Creators: name: Sick, Gordon Arthur
Publisher: name: University of British Columbia
Year: 2010

description: This thesis develops a model for the management of till cash (currency and coin) of a branch for a Vancouver area credit union. The model is developed in two parts. First, a model is estimated to forecast cash demand and then a cash order algorithm is developed. Two statistical models are developed to estimate cash demand. The first employs Box-Jenkins time series techniques. This model fails because the cash flow data are non-stationary, exhibiting both a growth trend and high autocorrelations at large lags. In the second model, a growth trend for real weekly cash flows is first estimated, incorporating an asymptotic capacity constraint. The real cash flow trend is converted to a nominal trend and used as the weight in a linear weighted least squares model for daily cash flows, in which the explanatory variables are dummy variables to indicate days of the week, months of the year, incidence of pay days, etc. The consistency of the resulting forecast model is also discussed. To develop a cash order algorithm, steady state models are first considered. These models are generally based on stationary cash demand, constant delivery lag times for orders and other assumptions that are inappropriate in this till cash management setting. To relax the steady state assumptions a general dynamic programming framework is developed for the cash management model that allows for either penalty costs for cash-outs (cash shortages) or a chance constraint involving the probability of a cash-out. Because of non-stationarity of the cash flows the dynamic program cannot be solved directly, but an approximate solution is obtained using a simulation technique. The resulting algorithm is tested on historical data and the results are discussed briefly.
Multi-wavelength emission from leptonic processes in ageing galaxy bubbles
Creators: name: Owen, Ellis R.
name: Yang, H. -Y. Karen
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The evolutionary behavior and multi-wavelength emission properties of bubbles around galaxies, such as the \textit{Fermi} bubbles of the Milky Way, is unsettled. We perform 3D magnetohydrodynamical simulations to investigate the evolution of leptonic galaxy bubbles driven by a 0.3 Myr intense explosive outburst from the nucleus of Milky Way-like galaxies. Adopting an ageing model for their leptonic cosmic rays, we post-process our simulations to compute the multi-wavelength emission properties of these bubbles. We calculate the resulting spectra emitted from the bubbles from radio frequencies to $γ$-rays, and construct emission maps in four energy bands to show the development of the spatial emission structure of the bubbles. The simulated bubbles show a progression in their spectral properties as they age. In particular, the TeV $γ$-ray emission is initially strong and dominated by inverse Compton scattering, but falls rapidly after $\sim$ 1 Myr. By contrast, the radio synchrotron emission remains relatively stable and fades slowly over the lifetime of the bubble. Based on the emission properties of our post-processed simulations, we demonstrate that $γ$-ray observations will be limited in their ability to detect galaxy bubbles, with only young bubbles around nearby galaxies being within reach. However, radio observations with e.g. the up-coming Square Kilometer Array, would be able to detect substantially older bubbles at much greater distances, and would be better placed to capture the evolutionary progression and diversity of galaxy bubble populations.
description: 20 pages, 13 figures, 2 tables. Accepted for publication in MNRAS (v2 updated to match accepted version)
INTEGRAL/IBIS 17-yr hard X-ray all-sky survey
Creators: name: Krivonos, Roman
name: Sazonov, Sergey
name: Kuznetsova, Ekaterina
name: Lutovinov, Alexander
name: Mereminskiy, Ilya
name: Tsygankov, Sergey
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The International Gamma-Ray Astrophysics Laboratory (INTEGRAL), launched in 2002, continues its successful work in observing the sky at energies E>20 keV. The legacy of the mission already includes a large number of discovered or previously poorly studied hard X-ray sources. The growing INTEGRAL archive allows one to conduct an all-sky survey including a number of deep extragalactic fields and the deepest ever hard X-ray survey of the Galaxy. Taking advantage of the data gathered over 17 years with the IBIS coded-mask telescope of INTEGRAL, we conducted survey of hard X-ray sources, providing flux information from 17 to 290 keV. The catalog includes 929 objects, 890 of which exceed a detection threshold of 4.5 sigma and the rest are detected at 4.0-4.5 sigma and belong to known cataloged hard X-ray sources. Among the identified sources of known or suspected nature, 376 are associated with the Galaxy and Magellanic clouds, including 145 low-mass and 115 high-mass X-ray binaries, 79 cataclysmic variables, and 37 of other types; and 440 are extragalactic, including 429 active galactic nuclei (AGNs), 2 ultra-luminous sources, one supernova (AT2018cow) and 8 galaxy clusters. 113 sources remain unclassified. 46 objects are detected in the hard X-ray band for the first time. The LogN-LogS distribution of 356 non-blazar AGNs is measured down to a flux of 2E-12 erg/s/cm2 and can be described by a power law with a slope of 1.44 +/- 0.09 and normalization 8E-3/deg2 at 1E-11 erg/s/cm2. The LogN-LogS distribution of unclassified sources indicates that the majority of them are of extragalactic origin.
description: 5 pages, 2 figures, 7 tables (1 long table), accepted for publication in MNRAS
Status of searches for electroweak-scale supersymmetry after LHC Run 2
Creators: name: Adam, Wolfgang
name: Vivarelli, Iacopo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The second period of datataking at the Large Hadron Collider (LHC) has provided a large dataset of proton-proton collisions that is unprecedented in terms of its centre-of-mass energy of 13 TeV and integrated luminosity of almost 140 fb$^{-1}$. These data constitute a formidable laboratory for the search for new particles predicted by models of supersymmetry. The analysis activity is still ongoing, but a host of results on supersymmetry has already been released by the general purpose LHC experiments ATLAS and CMS. In this paper, we provide a map into this remarkable body of research, which spans a multitude of experimental signatures and phenomenological scenarios. In the absence of conclusive evidence for the production of supersymmetric particles we discuss the constraints obtained in the context of various models. We finish with a short outlook on the new opportunities for the next runs that will be provided by the upgrade of detectors and accelerator.
description: 73 pages, 16 figures
Method of distinguishing between black holes and wormholes
Creators: name: Hong, Wei
name: Tao, Jun
name: Zhang, Tong-Jie
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Beginning with a brief review of the regular space-time with asymptotically Minkowski core, we can consider two copies of the space-time connected through a short-throat wormhole whose radius of mouth is equal to or larger than an extremal regular black hole with asymptotically Minkowski core's event horizon radius. If the wormhole is traversable and smooth, fluxes in these two space-times will interact with and flow into each other. On the cosmological scale, gravity is a candidate for the flux. As the gravitational field changes in one space-time, the behaviours of stars around the wormhole will be affected by the other space-time since we assume there exists enough exotic matter to keep the wormhole open. The changes in a gravitational field can be quantized through the gauge invariant perturbations. The variances in orbits of stars can be reflected by changes in the kinematic shifts of photon frequencies. Then, we use this to distinguish between the black hole and wormhole generated by the same space-time line element, since black hole can not connect two space-times and is unaffected by other space-time.
description: 21 pages, 20 figures. Corresponds to version published in PRD (original version is arXiv:2111.14749v1)
Detecting orbits along subvarieties via the moment map
Creators: name: Jablonski, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 22E46, 20G15, 22E25

description: Let G be a (real or complex) linear reductive algebraic group acting on an affine variety V. Let W be a subvariety. In this work we study how the G-orbits intersect W. We develop a criterion to determine when the intersection can be described as a finite union of orbits of a reductive subgroup. The conditions of the criterion are easily verified in practice and are used to construct continuous families of (non-isomorphic) nilpotent Lie groups which do not admit left-invariant Ricci soliton metrics. Other applications to the left-invariant geometry of Lie groups are also given. The note finishes by applying our techniques to the adjoint representation. The classical result of finiteness of nilpotent orbits is reproven and it is shown that each of these orbits contains a critical point of the norm squared of the moment map.
description: 15 pages
On analogues of black brane solutions in the model with multicomponent anisotropic fluid
Creators: name: Ivashchuk, V. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A family of spherically symmetric solutions with horizon in the model with m-component anisotropic fluid is presented. The metrics are defined on a manifold that contains a product of n-1 Ricci-flat "internal" spaces. The equation of state for any s-th component is defined by a vector U^s belonging to R^{n + 1}. The solutions are governed by moduli functions H_s obeying non-linear differential equations with certain boundary conditions imposed. A simulation of black brane solutions in the model with antisymmetric forms is considered. An example of solution imitating M_2-M_5 configuration (in D =11 supergravity) corresponding to Lie algebra A_2 is presented.
description: 8 pages, Latex, references and several equations and examples are added, typos are eliminated
Additional file 1 of Analysis of sputum microbial metagenome in COPD based on exacerbation frequency and lung function: a case control study
Creators: name: Li, Wei
name: Wang, Bingbing
name: Tan, Min
name: Song, Xiaolian
name: Xie, Shuanshuan
name: Wang, Changhui
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 1. Supplemental Figures.
Achievements and challenges of nanostructured Titania Eco-materials derived from Sol-Gel Processing
Creators: name: Wunderlich, Wilfried
name: Mukti, Rino R.
name: Winardi, Suminto
name: Kumar, Krishnankutty-Nair. P.
name: Okubo, Tatsuya
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Nanostructured titania derived from the sol-gel processing requires a detailed study to clarify state-of-art of every process step starting from colloidal sol, peptization, gelation to the final sintering. The applied parameters such as peptization temperature and time in the current investigation of sol during the early stage of processing were characterized by dynamic light scattering (DLS) and compared to other parameters found in the literature. Upon gelation, the resulting anatase was calcined to study the phase transformation to rutile as well as to discriminate the effect of peptized and unpeptized in which the characterizations were carried out by using XRD, Nitrogen adsorption-desorption isotherm and HRTEM. It shows that peptizing the titania sol at 80oC for at least 12 h resulted in a small and uniform anatase crystallite with size of 4.6 nm.
description: 6 pages, 7 figures, http://bulletin.soe.u-tokai.ac.jp/english_vol34/11-16.pdf
Curvature, concentration and error estimates for Markov chain Monte Carlo
Creators: name: Joulin, Aldéric
name: Ollivier, Yann
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We provide explicit nonasymptotic estimates for the rate of convergence of empirical means of Markov chains, together with a Gaussian or exponential control on the deviations of empirical means. These estimates hold under a "positive curvature" assumption expressing a kind of metric ergodicity, which generalizes the Ricci curvature from differential geometry and, on finite graphs, amounts to contraction under path coupling.
description: Published in at http://dx.doi.org/10.1214/10-AOP541 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Gravitational decoupling of generalized Horndeski hybrid stars
Creators: name: da Rocha, Roldao
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Gravitational decoupled compact polytropic hybrid stars are here addressed in generalized Horndeski scalar-tensor gravity. Additional physical properties of hybrid stars are scrutinized and discussed in the gravitational decoupling setup. The asymptotic value of the mass function, the compactness, and the effective radius of gravitational decoupled hybrid stars are studied for both cases of a bosonic and a fermionic prevalent core. These quantities are presented and discussed as functions of Horndeski parameters, the decoupling parameter, the adiabatic index, and the polytropic constant. Important corrections to general relativity and generalized Horndeski scalar-tensor gravity, induced by the gravitational decoupling, comply with available observational data. Particular cases involving white dwarfs, boson stellar configurations, neutron stars, and Einstein-Klein-Gordon solutions, formulated in the gravitational decoupling context, are also scrutinized.
description: 35 pages, 10 figures
Metal-insulator transition in NiS$_{2-x}$Se$_x$
Creators: name: Kunes, J.
name: Baldassarre, L.
name: Schachner, B.
name: Rabia, K.
name: Kuntscher, C. A.
name: Korotin, Dm. M.
name: Anisimov, V. I.
name: McLeod, J. A.
name: Kurmaev, E. Z.
name: Moewes, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The origin of the gap in NiS2 as well as the pressure- and doping-induced metal-insulator transition in the NiS2-xSex solid solutions are investigated both theoretically using the first-principles band structures combined with the dynamical mean-field approximation for the electronic correlations and experimentally by means of infrared and x-ray absorption spectroscopies. The bonding-antibonding splitting in the S-S (Se-Se) dimer is identified as the main parameter controlling the size of the charge gap. The implications for the metal-insulator transition driven by pressure and Se doping are discussed.
description: 6 pages, 8 figures
On the origin and the detection of characteristic axion wiggles in photon spectra
Creators: name: Kachelriess, M.
name: Tjemsland, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Photons propagating in an external magnetic field may oscillate into axions or axion-like particles (ALPs). Such oscillations will lead to characteristic features in the energy spectrum of high-energy photons from astrophysical sources that can be used to probe the existence of ALPs. In this work, we revisit the signatures of these oscillations and stress the importance of a proper treatment of turbulent magnetic fields. We implement axions into ELMAG, complementing thereby the usual description of photon-axion oscillations with a Monte Carlo treatment of high-energy photon propagation and interactions. We also propose an alternative method of detecting axions through the discrete power spectrum using as observable the energy dependence of wiggles in the photon spectra.
description: 1+25 pages, 8 figures; v2: clarifications and references added, improved readability of figures, minor changes, version to appear in JCAP
Decision processes in rural development
Creators: name: Hale, Sylvia Marion
Publisher: name: University of British Columbia
Year: 2010

description: This thesis develops a general theory of choice behaviour which is applied to the analysis of response to development programmes in rural India. The theory focuses on the social processes which structure perceived choice parameters for individuals differentially situated within the village communities. It examines those mechanisms which influence the range of alternatives likely to be considered, appreciation of their varied consequences, or the likely outcome of new proposals, and their perceived and actual feasibility. A basic concept in the theory is "power", defined here as "the ability to influence the structuring of choice parameters of others", through control over critical mechanisms of information flow, persuasion, and access to input facilities. Ten hypotheses are derived from the basic theoretical axiom of rational action, concerned with how such control will be exercised, and the implications which this has for the scope of choices open to others. Rural development programmes in India provide the substantive context for testing the utility of these hypotheses. These programmes are directly concerned with promoting innovation among villagers, and they incorporate a wide range of specific choices. The theory predicts that within the highly stratified village communities, first hand access to new information, and further diffusion at second hand, will be concentrated among members of the same faction and* social stratum as initially privileged informants. Vertical diffusion of information across strata will be minimal, and its content strongly biased by the particular interests of initial informants. The theory further predicts that evaluation of the merits of any new proposals will be strongly influenced by the character of relations between informant and recipients. As information flows vertically between strata, its persuasive impact will decline, as a function of relatively poorer quality information, the extent of tensions and conflicting interests between strata, and perceived economic disparities. Lastly, the theory predicts that access to any input facilities will be concentrated among members of the same faction and social stratum as those persons responsible for their distribution. Access by members of other strata will decline with increasing social distance, and their preferences are progressively less likely to be considered in the investment of resources for community projects. The study succeeds in demonstrating the utility of these hypotheses in predicting response to development projects within the five village communities.
Imprints of decaying dark matter on cosmic voids
Creators: name: Lester, Earl
name: Bolejko, Krzysztof
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Standard Cosmological Model assumes that more than 85\% of matter is in the form of collisionless and pressureless dark matter. Unstable decaying dark matter has been proposed in the literature as an extension to the standard cold dark matter model. In this paper we investigate a scenario when dark matter decays and the resultant particle moves with respect to the dark matter. A covariant hydrodynamical model is developed in which the decay is modeled by the transfer of energy-momentum between two dark dust fluid components. We parameterise the model in terms of the decay rate $Γ$ and injection velocity $v_i$ of the resultant dark matter particles. We apply the framework to study the evolution of cosmic voids which are environments with low content of baryonic matter. Thus, unlike baryon-rich environments, voids provide an opportunity to measure dark matter signals that are less contaminated by complex baryonic processes. We find that the growth of S-type voids is modified by the dark matter decay, leading to imprints at the present day. This paper serves as a proof-of-concept that cosmic voids can be used to study dark mater physics. We argue that future cosmological observations of voids should focus on signs of reported features to either confirm or rule out the decaying dark matter scenario. Lack of presence of reported features could put constraints of the decay of dark matter in terms of $Γ> H_0^{-1}$ and $v_i<10$ km/s.
description: 13 pages, 8 figures. Corresponds to version published 17 December 2021 in Phys. Rev. D 104, 123540
Determination of $B_K$ using improved staggered fermions (I): SU(3) chiral perturbation theory fit
Creators: name: Bae, Taegil
name: Kim, Hyung-Jin
name: Kim, Jangho
name: Kim, Jongjeong
name: Kim, Kwangwoo
name: Yoon, Boram
name: Lee, Weonjong
name: Jung, Chulwoo
name: Sharpe, Stephen R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present the results for $B_K$ calculated using HYP-smeared staggered fermions using lattices generated by the MILC collaboration using the asqtad staggered action. We have done the calculation on 8 ensembles of these lattices, including three different lattice spacings ($a=0.12, 0.09, 0.06$ fm). We fit the data to forms based on those predicted by SU(3) mixed-action partially-quenched staggered chiral perturbation theory. Our preliminary result is $ B_K(\text{NDR},μ=2\text{GeV}) = 0.528 \pm 0.011 \pm 0.048 $, where the first error is statistical and the second systematic. The error turns out to be larger than that from an analysis using SU(2) chiral perturbation theory.
description: 7 pages, 2 figures, Lattice 2009 proceeding
Current fluctuations of a system of one-dimensional random walks in random environment
Creators: name: Peterson, Jonathon
name: Seppäläinen, Timo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We study the current of particles that move independently in a common static random environment on the one-dimensional integer lattice. A two-level fluctuation picture appears. On the central limit scale the quenched mean of the current process converges to a Brownian motion. On a smaller scale the current process centered at its quenched mean converges to a mixture of Gaussian processes. These Gaussian processes are similar to those arising from classical random walks, but the environment makes itself felt through an additional Brownian random shift in the spatial argument of the limiting current process.
description: Published in at http://dx.doi.org/10.1214/10-AOP537 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Injected Power Fluctuations in 1D dissipative systems : role of ballistic transport
Creators: name: Farago, Jean
name: Pitard, Estelle
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This paper is a generalization of the models considered in [J. Stat. Phys. 128,1365 (2007)]. Using an analogy with free fermions, we compute exactly the large deviation function (ldf) of the energy injected up to time $t$ in a one-dimensional dissipative system of classical spins, where a drift is allowed. The dynamics are T=0 asymmetric Glauber dynamics driven out of rest by an injection mechanism, namely a Poissonian flipping of one spin. The drift induces anisotropy in the system, making the model more comparable to experimental systems with dissipative structures. We discuss the physical content of the results, specifically the influence of the rate of the Poisson injection process and the magnitude of the drift on the properties of the ldf. We also compare the results of this spin model to simple phenomenological models of energy injection (Poisson or Bernoulli processes of domain wall injection). We show that many qualitative results of the spin model can be understood within this simplified framework.
description: 23 pages, 8 figures