cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An Analytic Expression for the Distribution of the Generalized Shiryaev-Roberts Diffusion
Creators: name: Polunchenko, Aleksey S.
name: Sokolov, Grigory
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 62L10, 60G10, 62M15, 60J60,

description: We consider the quickest change-point detection problem where the aim is to detect the onset of a pre-specified drift in "live"-monitored standard Brownian motion; the change-point is assumed unknown (nonrandom). The topic of interest is the distribution of the Generalized Shryaev-Roberts (GSR) detection statistic set up to "sense" the presence of the drift. Specifically, we derive a closed-form formula for the transition probability density function (pdf) of the time-homogeneous Markov diffusion process generated by the GSR statistic when the Brownian motion under surveillance is "drift-free", i.e., in the pre-change regime; the GSR statistic's (deterministic) nonnegative headstart is assumed arbitrarily given. The transition pdf formula is found analytically, through direct solution of the respective Kolmogorov forward equation via the Fourier spectral method to achieve separation of the spacial and temporal variables. The obtained result generalizes the well-known formula for the (pre-change) stationary distribution of the GSR statistic: the latter's stationary distribution is the temporal limit of the distribution sought in this work. To conclude, we exploit the obtained formula numerically and briefly study the pre-change behavior of the GSR statistic versus three factors: (a) drift-shift magnitude, (b) time, and (c) the GSR statistic's headstart.
description: 45 pages; 8 figures; to appear in Methodology and Computing in Applied Probability
Quantification, challenges and outlook of PV integration in the power system: a review by the European PV Technology Platform
Creators: name: Alet, P.-J.
name: Baccaro, F.
name: De Felice, M.
name: Efthymiou, V.
name: Mayr, C.
name: Graditi, G.
name: Juel, M.
name: Moser, D.
name: Petitta, M.
name: Tselepis, S.
name: Yang, G.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV in the Electricity Markets

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2945-2951
description: Integration in the power system is becoming a limiting factor to the further development of
photovoltaics. Proper quantification is needed to evaluate both issues and solutions; the share of annual electricity
demand is widely used but we found that some of the metrics which are related to power rather than energy better
reflect the impact on networks. Barriers to wider deployment of PV into power grids can be split between local
technical issues (voltage levels, harmonics distortion, reverse power flows and transformer loading) and system-wide
issues (intermittency, reduction of system resilience). Many of the technical solutions to these issues rely on the
inverters as actuators (e.g., for control of active and reactive power) or as interfaces (e.g., for local storage). This role
requires further technical standardisation and needs to be taken into account in the planning of power networks.
Forecasting, storage, and combination with other renewable sources are interdependent solutions to solve the
intermittency issue. Finally, we found that PV is also an opportunity to reduce some investment required to upgrade
existing power networks. Through integration with micro-grids and hybrid generators, it can form the basis of novel
power systems.
Modeling and Sizing of Large PV-Diesel Hybrid Systems without Energy Storage
Creators: name: Munoz, J.
name: Carrillo, J.M.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV Applications Without a Centralised Grid

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2925-2929
description: This paper describes the modelling of components and control strategies for PV-diesel hybrid systems
without energy storage, which have been implemented in an online and free-software simulator of PV systems called
SISIFO, which is publicly available at www.sisifo.info. Among other features, this software tool allows the
prediction of fuel savings for different sizes and types of PV generators, the comparison of selected control strategies
and the evaluation of the spinning reserve requirements in systems with multiple diesel generators operating in
parallel.
Penthetor lucasi
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Penthetor
Penthetor lucasi

description: Penthetor lucasi (Dobson, 1880). Ann. Mag. Nat. Hist., ser. 5, 6:163. TYPE LOCALITY: Malaysia, Sarawak. DISTRIBUTION: W Malaysia, Borneo, Riau Arch. (Indonesia).
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 145, DOI: 10.5281/zenodo.7353060
Gravitational time dilation as a resource in quantum sensing
Creators: name: Cepollaro, Carlo
name: Giacomini, Flaminia
name: Paris, Matteo G. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Atomic clock interferometers are a valuable tool to test the interface between quantum theory and gravity, in particular via the measurement of gravitational time dilation in the quantum regime. Here, we investigate whether gravitational time dilation may be also used as a resource in quantum information theory. In particular, we show that for a freely falling interferometer and for a Mach-Zehnder interferometer, the gravitational time dilation may enhance the precision in estimating the gravitational acceleration for long interferometric times. To this aim, the interferometric measurements should be performed on both the path and the clock degrees of freedom.
description: 6 pages main text, 3 pages appendices, 5 figures
Blueshifted [OI] lines from protoplanetary discs: the smoking gun of X-ray photoevaporation
Creators: name: Ercolano, Barbara
name: Owen, James
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Photoevaporation of protoplanetary discs by high energy radiation from the central young stellar object is currently the favourite model to explain the sudden dispersal of discs from the inside out. While several theoretical works have provided a detailed pictured of this process, the direct observational validation is still lacking. Emission lines produced in these slow moving protoplanetary disc winds may bear the imprint of the wind structure and thus provide a potential diagnostic of the underlying dispersal process. In this paper we primarily focus on the collisionally excited neutral oxygen line at 6300A. We compare our models predictions to observational data and demonstrate a thermal origin for the observed blueshifted low-velocity component of this line from protoplanetary discs. Furthermore our models show that while this line is a clear tell-tale-sign of a warm, quasi-neutral disc wind, typical of X-ray photoevaporation, its strong temperature dependence makes it unsuitable to measure detailed wind quantities like mass-loss-rate.
description: 7 pages, 6 figures, accepted for publication in MNRAS
Optimized SC-F-LOAM: Optimized Fast LiDAR Odometry and Mapping Using Scan Context
Creators: name: Liao, Lizhou
name: Fu, Chunyun
name: Feng, Binbin
name: Su, Tian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: LiDAR odometry can achieve accurate vehicle pose estimation for short driving range or in small-scale environments, but for long driving range or in large-scale environments, the accuracy deteriorates as a result of cumulative estimation errors. This drawback necessitates the inclusion of loop closure detection in a SLAM framework to suppress the adverse effects of cumulative errors. To improve the accuracy of pose estimation, we propose a new LiDAR-based SLAM method which uses F-LOAM as LiDAR odometry, Scan Context for loop closure detection, and GTSAM for global optimization. In our approach, an adaptive distance threshold (instead of a fixed threshold) is employed for loop closure detection, which achieves more accurate loop closure detection results. Besides, a feature-based matching method is used in our approach to compute vehicle pose transformations between loop closure point cloud pairs, instead of using the raw point cloud obtained by the LiDAR sensor, which significantly reduces the computation time. The KITTI dataset is used for verifications of our method, and the experimental results demonstrate that the proposed method outperforms typical LiDAR odometry/SLAM methods in the literature. Our code is made publicly available for the benefit of the community.
A Compact Low Cost PV Off-Grid Water Sterilizer
Creators: name: Serra, J.M.
name: Marques, P.
name: Luis, P.
name: Raimundo, S.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV Applications Without a Centralised Grid

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2937-2939
description: Every year thousands of people die by diseases caused by contaminated water. UV radiation can provide
an effective disinfection system for water microbial purification. We present a low cost PV operated system that can
work in regions without electricity access, providing almost 6 hours of operation, which represents more than 6 m3 of
treated water. The test results show that the system is effective in sterilizing water since it eliminated between 97% and
99% of the existing coliform and E. coli bacteria.
Demonstration of $\mathbb{C}P^2$ skyrmions in three-band superconductors by self-consistent solutions to a Bogoliubov-de Gennes model
Creators: name: Benfenati, Andrea
name: Barkman, Mats
name: Babaev, Egor
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Topological defects, such as magnetic-flux-carrying quantum vortices determine the magnetic response of superconductors and hence are of fundamental importance. Here, we show that stable $\mathbb{C}P^2$ skyrmions exist in three-band $s+\rm{i} s$ superconductors as fully self-consistent solutions to a microscopic Bogoluibov-de Gennes model. This allows us to calculate microscopically the magnetic signatures of $\mathbb{C}P^2$ skyrmions and their footprint in the local density of states.
description: References updated
Dust Coagulation in the Vicinity of a Gap-Opening Jupiter-Mass Planet
Creators: name: Carballido, Augusto
name: Matthews, Lorin S.
name: Hyde, Truell W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We analyze the coagulation of dust in and around a gap opened by a Jupiter-mass planet. To this end, we carry out a high-resolution magnetohydrodynamic (MHD) simulation of the gap environment, which is turbulent due to the magnetorotational instability. From the MHD simulation, we obtain values of the gas velocities, densities and turbulent stresses a) close to the gap edge, b) in one of the two gas streams that accrete onto the planet, c) inside the low-density gap, and d) outside the gap. The MHD values are then supplied to a Monte Carlo dust coagulation algorithm, which models grain sticking and compaction. We consider two dust populations for each region: one whose initial size distribution is monodisperse, with monomer radius equal to 1 $μ$m, and another one whose initial size distribution follows the Mathis-Rumpl-Nordsieck distribution for interstellar dust grains, with an initial range of monomer radii between 0.5 and 10 $μ$m. Our Monte Carlo calculations show initial growth of dust aggregates followed by compaction in all cases but one, that of aggregates belonging to the initially monodisperse population subject to gas conditions outside the gap. In this latter case, the mass-weighted (MW) average porosity of the population reaches extremely high final values of 98\%. The final MW porosities in all other cases range between 30\% and 82\%. The efficiency of compaction is due to high turbulent relative speeds between dust particles. Future studies will need to explore the effect of different planet masses and electric charge on grains.
description: 5 pages, 4 figures. Submitted to ApJL
Plerotes K. Andersen 1910
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Plerotes

description: Plerotes K. Andersen, 1910. Ann. Mag. Nat. Hist., ser. 8, 5:97. TYPE SPECIES: Epomophorus anchietae Seabra, 1900. COMMENTS: Revised by Bergmans (1989).
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 145, DOI: 10.5281/zenodo.7353060
description: {"references": ["Bergmans, W. 1989. Taxonomy and biogeography of African fruit bats (Mammalia: Megachiroptera). 2. The genera Micropteropus Matschie, 1899, Epomops Gray, 1870, Hypsignathus H. Allen, 1861, Nanonycteris Matschie, 1899, and Plerotes Andersen, 1910. Beaufortia, 39 (4): 89 - 153."]}
Modeling and Simulation of Large PV Pumping Systems
Creators: name: Munoz, J.
name: Carrillo, J.M.
name: Martinez-Moreno, F.
name: Carrasco, L.M.
name: Narvarte, L.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV Applications Without a Centralised Grid

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2933-2936
description: This paper describes the modelling of components for large PV pumping systems, which have been
implemented in an online and free-software simulator of PV systems called SISIFO, which is publicly available at
www.sisifo.info. Among other features, this software tool allows the prediction of water pumped as function of PV
size and type and the analysis of system performance.
Major Trends in Kingdom Church Growth in Nigeria
Creators: name: Ilesanmi, PhD, Dele Alaba
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430314
subject: History of religion

description: This paper discusses the major trends in the history of church growth and development in Nigeria. It adapts the recent work by Adamolekun (2012), showing five periods of the history of church growth in Nigeria. The paper discusses further the implications of church growth in Nigeria and offers some suggestions and recommendations that will help strengthen the church of God in Nigeria. The methodology adopted is a historical approach, relying mainly on secondary sources. This paper discovers that church planting has helped the growth of the church in Nigeria and that Pentecostal churches are at the forefront of church planting. It also discovers that the proliferation of churches has negative impacts. The paper concludes that there should be a controlled mechanism in place to curb the excesses of some church founders and that the growth of the church should not be based on orthodoxy but biblical orthopraxy so as to change the battered face of Nigerian Society for the better and help the image of the church of God not only in Nigeria but also in the entire world.
Plerotes anchietai
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Plerotes
Plerotes anchietai

description: Plerotes anchietai (Seabra, 1900). J. Sei. Math. Phys. Nat. Lisboa, ser. 2, 6:116. TYPE LOCALITY: Angola, Benguela, Galanga. DISTRIBUTION: Angola, Zambia, S Zaire.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 145, DOI: 10.5281/zenodo.7353060
Towards a European Union of Photovoltaic Solar Electricity
Creators: name: Ossenbrink, H.
name: Jäger-Waldau, A.
name: Taylor, N.
name: Szabó, S.
name: Huld, T.
name: Dunlop, E.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV in the Electricity Markets

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2952-2954
description: By end of 2014, about 88 GW of photovoltaic electricity systems have been installed, producing 2.8% of all
the European electricity consumed [1]. This exceeds already the target of 84.4GWp set by Europe's Member States in their
National Renewable Energy Action Plans (NREAP) delivered to the European Commission in 2010.
However, deployment of PV is very varied across Member States, either due to different ambitions in the original NREAPs,
or due to the different weight renewable energy plays within a Member-State's general energy policy. Regarding PV
deployment, Europe is still far from implementing a European Renewable Energy Union. Whilst technical barriers have been
very successfully reduced by European and international standards development, regulatory differences across Member
States are increasing and lead to a situation where PV has achieved a electricity share of almost 8% in some countries,
between 1% and 2% in many others, or none at all.
The presentation will examine a number of facts which explain Europe's situation in the deployment of PV towards the 2020
renewable energy target, will substantiate the assessment by providing robust data and will provide recommendations to
harmonize Member States deployment policies.
Wall as Component to Utilize BIPV Modules with Reasonable Seasonal Performance in Comparison with Roof and Canopy
Creators: name: Rahmani, A.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV in Architecture and as Building Material

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2892-2897
description: Wall as the main component of building could utilize BIPV modules in solar architecture. Acceptable
performance of wall could be reached in comparison with performance of other components that are mainly roof and
canopy. In contrast to preliminary comparisons that show sloped roof and canopy respectively have higher
performance compared with wall, more accurate analysis proved that wall could prepare acceptable performance by
taking more particular parameters into account. In this research the main investigated parameter was ‘total effective
area of modules’. This performance could reach to its maximum when a module faces exactly perpendicular to
irradiation. It was investigated by regard to the fact that building needs more energy for heating in colder seasons.
Although with equal number of BIPV modules roof showed a higher performance in the first three seasons of year,
but performance of winter was the main focus. Wall proved that could prepare even a stronger performance in winter
if it is designed with some proper tilt, compared to the other two. Also hourly, monthly and annual performance of
wall showed that it had much less fluctuation as a moderate component in comparison to roof and canopy. It means
that wall prepared less difference between amount of produced energy in winter and summer. Also by lifting height
of prototypes wall showed an absolute superiority compared to the other two.
Latest Developments in Global Installed Photovoltaic Capacity and Hidden Growth Markets
Creators: name: Werner, C.
name: Gerlach, A.
name: Breyer, C.
name: Orlandi, S.
name: Masson, G.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV in the Electricity Markets

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2955-2972
description: The installed capacity of photovoltaics (PV) is rising steadily. Most PV is installed in highly electrified countries as
on-grid systems. Further, there are reams of small off-grid systems in rural areas of developing countries. Due to this,
reliable installation rates for PV are available only for a small number of countries. For the end of 2014 SolarPower
Europe reports 178,391 MWp of globally installed PV capacity, giving clear national specific data for 21 countries.
IEA PVPS gives a number of 176,965 MWp installed by providing detailed data for 34 countries, 24 of which
coming from official sources in IEA PVPS member countries.
This paper gives an overview of installed PV for all countries in the world, predicated based on the examination of
publically accessible data. Furthermore, an analysis of the development of cumulative PV capacities in recent years is
given. Resulting from this evaluation, PV installations are localized in 190 countries, representing 177,600 MWp.
Ptenochirus Peters 1861
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Ptenochirus

description: Ptenochirus Peters, 1861. Monatsb. K. Preuss. Akad. Wiss. Berlin, 1861:707. TYPE SPECIES: Pachysoma (Ptenochirus) jagori Peters, 1861.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 145, DOI: 10.5281/zenodo.7353060
Characterization of BIPV(T) Applications in Research Facility ‘SolarBEAT’
Creators: name: Valckenborg, R.M.E.
name: Hensen, J.L.M.
name: Folkerts, W.
name: De Vries, A.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV in Architecture and as Building Material

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2911-2916
description: The SolarBEAT facility is an outdoor Research & Development infrastructure for innovation on
BIPV(T). The facility is a cooperation between SEAC and the Technical University Eindhoven and is located in the
Netherlands. It has been founded early 2014 and has grown rapidly to its full capacity at the moment: a total of 6 projects
are testing 8 different BIPV prototypes on one full year performance in realistic outdoor conditions. Performance (Ratio)
is measured according to the norms and best practices. The secondary standard Solar Measurement Station is checked
continuosly with the measurements of the nearby official Dutch meteorological institute (KNMI). Data is coming in
flawless from more than 500 sensors. The daily data stream sums up to more than one million data points which are
imported by a central relational (SQL-based) server. Much care is taken that every data point is synchronized with atomic
time within 5 seconds, which makes a comparison between different projects possible. Moreover, at SolarBEAT,
reliability issues can be checked by using professional equipment a.o. Infrared Thermography (IRT), and in-house
developed outdoor Electroluminescence (EL).use developed outdoor Electroluminescence (EL).
Solar PV Integrated Lighter-Than-Air Platform (LTAP) for Airborne Power Generation under Variable Wind Gust
Creators: name: Ghosh, K.
name: Relekar, P.S.
name: Guha, A.
name: Duttagupta, S.P.
name: Gupta, S.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV Applications Without a Centralised Grid

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2917-2921
description: Lighter-than-Air Platforms (LTAP) are used to deploy for a wide range of applications including surveillance,
remote sensing and remote area power generation etc. Such applications require that an aerostat (static, tethered LTAP system) is
equipped with sophisticated imaging camera along with high-powered radar, lidar or sodar systems and an efficient sensor network.
This leads to the power source requirement ranges from100 Watts to kilo Watts. One option of supplying power to the aerostat is to
transmit power from a ground based diesel generator via ultra, ultra-light molecular-weight polyethylene based cable. However this
choice is restricted by the operational altitude of the aerostat up to a few hundred meters only, due to the cable weight rises which is
penultimate fraction of the total LTAP payload. We report on the development of a 5 kWatt-peak Solar PV (SPV) integrated LTAP
system which provides on-board power. The primary challenge will be the efficient utilization of surface area for power generation
without compromising on system stability. The envelope contour function (ECF) depends on LTAP volume and is dynamic in nature
(spatially, temporally). The ECF impact on the SPV module output is expressed via Dynamic Module Fill Factor (DMFF) term.
Besides this DMFF term, sudden wind gust also plays a significant role in dynamic positioning of the Lighter-than-Air Platform
(LTAP) and its power generation. Preliminary testing summarizes the effect of horizontal wind gust and pitching motion of LTAP on
power generation.
Hydrodynamic model for expansion and collisional relaxation of x-ray laser-excited multi-component nanoplasma
Creators: name: Saxena, Vikrant
name: Ziaja, Beata
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The irradiation of an atomic cluster with a femtosecond x-ray free-electron laser pulse results in a nanoplasma formation. This typically occurs within a few hundreds femtoseconds. By this time the x-ray pulse is over, and the direct photoinduced processes no longer contributing. All created electrons within the nanoplasma are thermalized. The nanoplasma thus formed is a mixture of atoms, electrons and ions of various charges. While expanding, it is undergoing electron impact ionization and three-body recombination. Below we present a hydrodynamic model to describe the dynamics of such multi-component nanoplasma. The model equations are derived by taking the moments of the corresponding Boltzmann kinetic equations. We include the equations obtained, together with the source terms due to electron impact ionization and three-body recombination, in our hydrodynamic solver. Model predictions for a test case: expanding spherical Ar nanoplasma are obtained. With this model we complete the two-step approach to simulate x-ray created nanoplasmas, enabling computationally efficient simulations of their picosecond dynamics. Moreover, the hydrodynamic framework including collisional processes can be easily extended for other source terms and then applied to follow relaxation of any finite non-isothermal multi-component nanoplasma with its components relaxed into local thermodynamic equilibrium.
description: 12 pages, 4 figures. This article has been accepted by Physics of Plasmas. After it is published, it will be found at http://scitation.aip.org/content/aip/journal/pop
A new hydrodynamic spherical accretion exact solution and its quasi-spherical perturbations
Creators: name: Hernandez, X.
name: Nasser, L.
name: Aguayo-Ortiz, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Classical Physics (physics.class-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present an exact $γ=5/3$ spherical accretion solution which modifies the Bondi boundary condition of $ρ\to const.$ as $r\to \infty$ to $ρ\to 0$ as $r \to \infty$. This change allows for simple power law solutions on the density and infall velocity fields, ranging from a cold empty free-fall condition where pressure tends to zero, to a hot hydrostatic equilibrium limit with no infall velocity. As in the case of the Bondi solution, a maximum accretion rate appears. As in the $γ=5/3$ case of the Bondi solution, no sonic radius appears, this time however, because the flow is always characterised by a constant Mach number. This number equals 1 for the case of the maximum accretion rate, diverges towards the cold empty state, and becomes subsonic towards the hydrostatic equilibrium limit. It can be shown that in the limit as { $r \to 0$}, the Bondi solution tends to the new solution presented, { extending the validity of the Bondi accretion value to} cases where the accretion density profile does not remain at a fixed constant value out to infinity. We then explore small deviations from sphericity and the presence of angular momentum through an analytic perturbative analysis. Such perturbed solutions yield a rich phenomenology through density and velocity fields in terms of Legendre polynomials, which we begin to explore for simple angular velocity boundary conditions having zeros on the plane and pole. The new solution presented provides complementary physical insight into accretion problems in general.
description: Accepted for publication in the ApJ. 10 figures, extended comparison to observations and first numerical tests included
Novel Luminescent Photovoltaic Roof Presented at Versailles during Solar Decahtlon Europe 2014
Creators: name: Bernardoni, P.
name: Zarcone, R.
name: Tonezzer, M.
name: Vincenzi, D.
name: Brocato, M.
name: Calabrese, G.
name: Guidi, V.
name: Baricordi, S.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV in Architecture and as Building Material

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2909-2910
description: A novel photovoltaic roof based on luminescent solar concentrator technology has been presented by
the authors at Palace of Versailles (Paris, France) during Solar Decathlon 2014 within Liv-lib project, whose
responsible was the Ecole Nationale Supérieure dArchitecture Paris – Malaquais.
Within this project the authors have realized a very large LSC photovoltaic roof of about 20 m2 based on 25 LSC
panels characterized by different dimensions and different shape.
$Z$ boson mixing and the mass of the $W$ boson
Creators: name: Zeng, Yu-Pan
name: Cai, Chengfeng
name: Su, Yu-Hang
name: Zhang, Hong-Hao
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the possibility of explaining the $W$ boson mass with an extra gauge boson mixing with the $Z$ boson at tree level. Extra boson mixing with the $Z$ boson will change the expression of the $Z$ boson mass, thus altering the $W$ boson mass. We explore two models in this work. We find that in the Derivative Portal Dark Matter model, there are parameters space which can give the observed $W$ boson mass, as well as the observed Dark Matter relic density. These parameters space can also fulfill the constraints from the electroweak oblique parameters and Dark Matter indirect detection. In the U(1) extension model, the kinetic mixing between extra boson and $B$ boson can also give the observed $W$ boson mass. However, to fulfill electroweak oblique parameters fit the kinetic mixing in the U(1) model can only contribute about $27~\mathrm{MeV}$ extra mass to the Standard Model $W$ boson mass. Both models indicate the extra vector boson with the best fit mass around $120~\mathrm{GeV}$.
description: 18 pages, 4 figures, matches PRD accepted version, discussion of other constraints on the DPDM model have been added, as well as comparison between the two models
Reservoir interactions of a vortex in a trapped 3D Bose-Einstein condensate
Creators: name: Rooney, S. J.
name: Allen, A. J.
name: Zülicke, U.
name: Proukakis, N. P.
name: Bradley, A. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We simulate the dissipative evolution of a vortex in a trapped finite-temperature dilute-gas Bose-Einstein condensate using first-principles open-systems theory. Simulations of the complete stochastic projected Gross-Pitaevskii equation for a partially condensed Bose gas containing a single quantum vortex show that the transfer of condensate energy to the incoherent thermal component without population transfer provides an important channel for vortex decay. For the lower temperatures considered, this effect is significantly larger that the population transfer process underpinning the standard theory of vortex decay, and is the dominant determinant of the vortex lifetime. A comparison with the Zaremba-Nikuni-Griffin kinetic (two-fluid) theory further elucidates the role of the particle transfer interaction, and suggests the need for experimental testing of reservoir interaction theory. The dominance of this particular energetic decay mechanism for this open quantum system should be testable with current experimental setups, and its observation would have broad implications for the dynamics of atomic matter waves and experimental studies of dissipative phenomena.
description: 9 pages, 3 figures
Testing Velocity-Field Lensing on IllustrisTNG Galaxies
Creators: name: Donet, Jean
name: Wittman, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Weak gravitational lensing shear could be measured far more precisely if information about unlensed attributes of source galaxies were available. Disk galaxy velocity fields supply such information, at least in principle, with idealized models predicting orders of magnitude more Fisher information when velocity field observations are used to complement images. To test the level at which realistic features of disk galaxies (warps, bars, spiral arms, and other substructure) inject noise or bias into such shear measurements, we fit an idealized disk model, including shear, to unsheared galaxies in the Illustris TNG100 simulation. The inferred shear thus indicates the extent to which unmodeled galaxy features inject noise and bias. We find that $γ_+$, the component of shear parallel to the galaxy's first principal axis, is highly biased and noisy because disks violate the assumption of face-on circularity, displaying a range of intrinsic axis ratios ($0.85\pm0.11$). The other shear component, $γ_\times$, shows little bias and is well-described by a double Gaussian distribution with central core scatter $σ_{\text{core}} \approx$ 0.03, with low-amplitude, broad wings. This is the first measurement of the natural noise floor in the proposed velocity-field lensing technique. We conclude that the technique will achieve impressive precision gains for measurements of $γ_\times$, but little gain for measurements of $γ_+$.
description: accepted to ApJ
Boxy H$α$ Emission Profiles in Star-Forming Galaxies
Creators: name: Chen, Yan-Mei
name: Gu, Qiu-Sheng
name: Tremonti, Christy A.
name: Shi, Yong
name: Jin, Yi-Fei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We assemble a sample of disk star-forming galaxies from the Sloan Digital Sky Survey Data Release 7, studying the structure of H$α$ emission lines, finding a large fraction of this sample contains boxy H$α$ line profiles. This fraction depends on galaxy physical and geometric parameters in the following way: (1) it increases monotonically with star formation rate per unit area ($Σ_{\rm SFR}$), and stellar mass ($M_*$), with the trend being much stronger with $M_*$, from $\sim$0% at $M_*=10^{10}M_{\odot}$ to about 50% at $M_*=10^{11}M_\odot$; (2) the fraction is much smaller in face-on systems than in edge-on systems. It increases with galaxy inclination ($i$) while $i < 60\,^{\circ}$ and is roughly a constant of 25% beyond this range; (3) for the sources which can be modeled well with two velocity components, blueshifted and redshifted from the systemic velocity, these is a positive correlation between the velocity difference of these two components and the stellar mass, with a slope similar to the Tully-Fisher relation; (4) the two components are very symmetric in the mean, both in velocity and in amplitude. The four findings listed above can be understood as a natural result of a rotating galaxy disk with a kpc-scale ring-like H$α$ emission region.
description: 8 pages, 6 figures, accepted by MNRAS
Ptenochirus jagori
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Ptenochirus
Ptenochirus jagori

description: Ptenochirus jagori (Peters, 1861). Monatsb. K. Preuss. Akad. Wiss. Berlin, 1861:707. TYPE LOCALITY: Philippines, Luzon, Albay, Daraga. DISTRIBUTION: Philippines.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 145, DOI: 10.5281/zenodo.7353060
High quality factor nanophotonic resonators in bulk rare-earth doped crystals
Creators: name: Zhong, Tian
name: Rochman, Jake
name: Kindem, Jonathan M.
name: Miyazono, Evan
name: Faraon, Andrei
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Numerous bulk crystalline materials exhibit attractive nonlinear and luminescent properties for classical and quantum optical applications. A chip-scale platform for high quality factor optical nanocavities in these materials will enable new optoelectronic devices and quantum light-matter interfaces. In this article, photonic crystal nanobeam resonators fabricated using focused ion beam milling in bulk insulators, such as rare-earth doped yttrium orthosilicate and yttrium vanadate, are demonstrated. Operation in the visible, near infrared, and telecom wavelengths with quality factors up to 27,000 and optical mode volumes close to one cubic wavelength is measured. These devices enable new nanolasers, on-chip quantum optical memories, single photon sources, and non-linear devices at low photon numbers based on rare-earth ions. The techniques are also applicable to other luminescent centers and crystals.
Hybrid, Micro-Inverter and Battery Based Standalone System for Rural and Urban Water Delivery
Creators: name: Lakeou, S.
name: Nunez, J.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV Applications Without a Centralised Grid

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2922-2924
description: The work describes a solar powered micro-inverter and battery operated hybrid electrical energy source
implemented at the University of the District of Columbia’s Experimental Farm. The goal of the project is to provide
round the clock electricity for maintaining specified temperature in a series of green houses as well as supply irrigation
water to a variety of crop systems including sustainable agriculture projects comprising hydroponic, aquaponics, specialty
and ethnic vegetables and fruits production and urban forestry. hydroponic crop systems at the Farm. The advantages and
shortcomings presented by a micro-inverter based system, when combined with the traditional battery storage/inverter are
analyzed. The system is proposed to be a model for a self-powered, standalone small scale hybrid system, ideal for semirural
and rural farming.
Physical Properties of Galactic Planck Cold Cores revealed by the Hi-GAL survey
Creators: name: Zahorecz, S.
name: Jimenez-Serra, I.
name: Wang, K.
name: Testi, L.
name: Tóth, L. V.
name: Molinari, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Previous studies of the initial conditions of massive star formation have mainly targeted Infrared-Dark Clouds (IRDCs) toward the inner Galaxy. This is due to the fact that IRDCs were first detected in absorption against the bright mid-IR background, requiring a favourable location to be observed. By selection, IRDCs represent only a fraction of the Galactic clouds capable of forming massive stars and star clusters. Due to their low dust temperatures, IRDCs are bright in the far-IR and millimeter and thus, observations at these wavelengths have the potential to provide a complete sample of star-forming massive clouds across the Galaxy. Our aim is to identify the clouds at the initial conditions of massive star formation across the Galaxy and compare their physical properties as a function of their Galactic location. We have examined the physical properties of a homogeneous galactic cold core sample obtained with the Planck satellite across the Galactic Plane. With the use of Herschel Hi-GAL observations, we have characterized the internal structure of them. By using background-subtracted Herschel images, we have derived the H2 column density and dust temperature maps for 48 Planck clumps. Their basic physical parameters have been calculated and analyzed as a function of location within the Galaxy. These properties have also been compared with the empirical relation for massive star formation derived by Kauffmann & Pillai (2010). Most of the Planck clumps contain signs of star formation. About 25% of them are massive enough to form high mass stars. Planck clumps toward the Galactic center region show higher peak column densities and higher average dust temperatures than those of the clumps in the outer Galaxy. Although we only have seven clumps without associated YSOs, the Hi-GAL data show no apparent differences in the properties of Planck cold clumps with and without star formation.
description: 22 pages, 11 figures, accepted for publication in A&A
Smart-FLeX – Demonstration of Integrated Approach for Design of Glass BIPV Facade
Creators: name: Ulbikas, J.
name: Galdikas, A.
name: Stonkus, A.
name: Ulbikaite, V.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV in Architecture and as Building Material

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2879-2881
description: Building integrated photovoltaic (BIPV) solutions and products are becoming hot topic in EU PV
market because of passing away FIT based support schemes and other business models coming into picture like selfconsumption,
net metering, etc. where building itself is becoming main place for PV installations.
SMART-FLeX project is demonstrating way forward for overcoming main barriers for BIPV products acceptance by
market through integrated solution covering building design with PV installation, flexible manufacturing production
of desired by architect’s vision façade with BIPV product and finishing by cost effective installation. For that the
project aims to demonstrate multi-functional glass/glass PV building element as plug & play device for safe and easy
installation for the glass facade buildings. Presentation covers project achievements during the first year activities.
From dripline to dripline: Nuclear astrophysics in the laboratory
Creators: name: Meisel, Zach
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: For the better part of a century the field of nuclear astrophysics has aimed to answer fundamental questions about nature, such as the origin of the elements and the behavior of high-density, low-temperature matter. Sustained and concerted efforts in nuclear experiment have been key to achieving progress in these areas and will continue to be so. Here I will briefly review recent accomplishments and open questions in experimental nuclear astrophysics.
description: Proceedings for invited review to GSI FAIRNESS 2016
Solar Resource Estimation Using a Radiative Transfer with Shading (RTS) Model
Creators: name: Gooding, J.
name: Smith, C.J.
name: Crook, R.
name: Tomlin, A.S.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV as Part of the Energy System

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2808-2813
description: A combination of falling technology prices and government financial incentives has led to the rapid
expansion of the solar microgeneration industry in the UK and around the world. With conditions for investment
becoming more favourable, viability appraisal is now of great interest to potential investors ranging from individuals
to large companies and authorities. A methodology to predict solar resource available to solar technologies in urban
areas is presented that combines a radiative transfer simulation with shading derived from digital surface model
(DSM) data. The radiative transfer simulation includes water vapour, ozone, clouds and surface albedo determined
from MODIS satellite products along with aerosol properties that are derived from the GLOMAP model. A DSM is
used to calculate the height of near-by obstacles and the horizon from each point of interest to establish when the site
is in shade during a year. The site-level radiance field is adjusted by elements in shade and integrated over the view
hemisphere of the photovoltaic (PV) panels to take into account panel tilt. Modelled annual global radiation
(Wh/m2/a) estimations are validated using power output data from 17 sites across four major UK cities (Bristol,
Cambridge, Leeds and Sheffield) and show good agreement with -3.68% and +2.62% mean percentage error under
assumed performance ratio conversions of 0.75 and 0.8 respectively. The results are compared to the outputs of both
Esri ArcGIS and PVGIS, the first of which predicted annual global radiation with -15.97% and -20.78% mean
percentage error with the latter returning +3.34% and +10.23% mean percentage error for the 0.75 and 0.8
performance ratios.
Photovoltaics in Powering of Marine Vessels
Creators: name: Guha, S.
name: Nashikkar, S.A.
name: Patil, S.
Publisher: name: WIP
Year: 2015
Subjects: PV APPLICATIONS
PV as Part of the Energy System

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2814-2817
description: Due to increased pressure from environmental agencies and ongoing slow maritime economy, the
compliance of environmental regulations stipulated in IMO conventions became hard for ship owners from
implementation point of view. That’s why various measures have been taken in shipbuilding to reduce emission
as well as improve fuel efficiency of the vessels. Some measures are directly related to design of the ship hull such as
Mewis duct, air bubble lubrication, scrubber etc. And some are related to engine and fuel used.
Other than that the most appropriate alternative has been and will always be using renewable sources of
energy like wind and solar, the most abundant and free one. The Impulse Power project is evident of the
effectiveness of solar energy by propellingthe 31m yacht MS Turanor totally on solar power with the help
of batteries. MS Turanor project was part of scientific expedition but if we want to use this system for commercial
ferries or cargo ships, then there is a problem to obtain continuous output due to intermittent supply of renewable
energy and high power requirement needed for completing the commercial responsibilities and service liability to
society. Answer is that commercial ship can make use of renewable energy as auxiliary or part fuel source. Due to
higher power and continuous power requirement it may not be viable to use huge number of Li-ion batteries which
are costlier i.e. around $350/kWh.