cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Off-design characterisation of a hybrid energy storage based on pumped thermal energy storage and low-concentration solar thermal collectors
Creators: name: Frate, Guido Francesco
name: Baccioli, Andrea
name: Bernardini, Leonardo
name: Ferrari, Lorenzo
Publisher: name: Technical University of Munich
Year: 2021

description: Long duration storages (i.e. 6+h) could foster the power sector transitions towards renewable energy sources. Among the many technologies proposed for such a task, pumped thermal electricity storage (PTES) recently gained much attention from researchers. A PTES plant based on low-concentration solar collectors, a vapour compression heat pump, and an organic Rankine cycle (ORC) is studied. In the proposed configuration, the solar collectors produce the thermal energy required by the heat pump during the charging phase. The heat pump operates with a reduced temperature lift and upgrades the solar thermal energy to store it at a higher temperature in sensible heat storage. The electric roundtrip efficiency is very high when the thermal energy is discharged through the ORC, thanks to solar thermal energy contribution. In the paper, the system performance in and off-design are analysed. An off-design model is used to map both heat pump and ORC for a set of representative operating conditions. Such performance maps were then used to characterise the system performance when coupled with a solar thermal energy production profile. In this way, the whole system operation was simulated for some representative days of the year. Results show that the average round trip efficiency is between 0.85 and 0.87, and the system can operate in various radiation conditions.
Traversable wormhole solution with a background Kalb-Ramond field
Creators: name: Lessa, L. A.
name: Oliveira, R.
name: Silva, J. E. G.
name: Almeida, C. A. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain a static spherically symmetric wormhole solution due to the vacuum expectation value (VEV) of a Kalb-Ramond field. The Kalb-Ramond VEV is a background tensor field which produces a local Lorentz symmetry breaking (LSB) of spacetime. Considering a non-minimal coupling between the Kalb-Ramond (VEV) and the Ricci tensor, we found an exact traversable wormhole solution sustained by matter sources with a negative isotropic pressure. The matter source satisfies the energy conditions at the throat for particular choices of the LSB parameter. Moreover, we employ the Gauss-Bonnet method to analyze the deflection angle of light in the weak limit approximation.
description: 16 pages, 2 figures
Causality, Unitarity, and the Weak Gravity Conjecture
Creators: name: Arkani-Hamed, Nima
name: Huang, Yu-tin
name: Liu, Jin-Yu
name: Remmen, Grant N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the shift of charge-to-mass ratio for extremal black holes in the context of effective field theory, motivated by the Weak Gravity Conjecture. We constrain extremality corrections in different regimes subject to unitarity and causality constraints. In the asymptotic IR, we demonstrate that for any supersymmetric theory in flat space, and for all minimally coupled theories, logarithmic running at one loop pushes the Wilson coefficient of certain four-derivative operators to be larger at lower energies, guaranteeing the existence of sufficiently large black holes with $Q>M$. We identify two exceptional cases of nonsupersymmetric theories involving large numbers of light states and Planck-scale nonminimal couplings, in which the sign of the running is reversed, leading to black holes with negative corrections to $Q/M$ in the deep IR, but argue that these do not rule out extremal black holes as the requisite charged states for the WGC. We separately show that causality and unitarity imply that the leading threshold corrections to the effective action from integrating out massive states, in any weakly coupled theory, can be written as a sum of squares and is manifestly positive for black hole backgrounds. Quite beautifully, the shift in the extremal $Q/M$ ratio is directly proportional to the shift in the on-shell action, guaranteeing that these threshold corrections push $Q>M$ in compliance with the WGC. Our results apply for black holes with or without dilatonic coupling and charged under any number of ${\rm U}(1)$s.
description: 41 pages, 5 figures
Subobjects of the successive power objects in the topos G-Set
Creators: name: Tyszka, Apoloniusz
Publisher: name: arXiv
Year: 2006
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18B25

description: Let G be a group and let M be an object of the topos G-Set. We prove that an object X of the category G-Set is isomorphic to some subobject of one of the objects P(M), P(P(M)), P(P(P(M))),... if and only if card X < sup{card P(M), card P(P(M)), card P(P(P(M))),...} and {g \in G: \forall m \in M gm=m} \subseteq {g \in G: \forall x \in X gx=x}.
description: 2 pages, LaTeX2e
Elicitation - switch-reference and time
Creators: name: Soria Pérez, Rolando
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with Rolando Soria Pérez. Topics covered include the expression of time in switch-reference constructions and attitude reports.
The effect of working fluid and compressibility on the optimal solidity in ORC turbine cascades
Creators: name: Tosto, Francesco
name: Pasquale, David
name: Colonna, Piero
name: Pini, Matteo
Publisher: name: Technical University of Munich
Year: 2021

description: The blade solidity, namely the blade chord¬to¬pitch ratio, largely affects the fluid¬dynamic performance of turbomachinery. For turbo¬machines operating with air or steam, the optimal value of the solidity which maximizes the efficiency is estimated with empirical correlations such as the ones proposed by Zweifel (1945) and Traupel (1966). However, if the turbomachine operates with unconventional fluids, the accuracy of these correlations becomes questionable. Examples of such working fluids are the non¬ideal (dense) vapors of organic compounds (e.g., hydrocarbons, siloxanes) used to operate organic Rankine cycle (ORC) power systems. This study investigates the effect of both the working fluid and the flow compressibility on the optimum pitch¬to¬chord ratio of turbine stages. A first principle model for the profile losses is developed for this purpose. Charts providing the optimal pitch¬to¬chord ratio for unconventional turbine stages are then provided. Numerical simulations of the flow over a turbine stator cascade have been conducted to validate the model results and evaluate the influence of both working fluid, flow compressibility, and solidity value on the loss breakdown. The results show that the optimal solidity of turbine cascades value significantly increases with the flow compressibility. Therefore, models providing the optimal solidity based on the estimate of passage loss only are not suited for unconventional turbines.
STAR Results on High Transverse Momentum, Heavy Flavor and Electromagnetic Probes
Creators: name: Sanchez, Manuel Calderon de la Barca
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We summarize here recent results from the STAR collaboration focusing on processes involving large momentum transfers. Measurements of angular correlations of di-hadrons are explored in both the pseudorapidity (eta) and azimuthal (phi) projections. In central Au+Au, an elongated structure is found in the eta projection which persists up to the highest measured pT. After quantifying the particle yield in this structure and subtracting it from the near-side yield, we observe that the remainder exhibits a behavior strikingly similar to that of the near-side yield in d+Au. For heavy flavor production, using electron-hadron correlations in p+p collisions, we obtain an estimate of the b-quark contribution to the non-photonic electrons in the pT region 3-6 GeV/c, and find it consistent with FONLL calculations. Together with the observed suppression of non-photonic electrons in Au+Au, this strongly suggests suppression of b-quark production in Au+Au collisions. We discuss results on the mid-rapidity Upsilon cross-section in p+p collisions. Finally, we present a proof-of-principle measurement of photon-hadron correlations in p+p collisions, paving the way for the tomographic study of the matter produced in central Au+Au via gamma-jet measurements.
description: 8 pages, 4 figures. Proceedings of "Quark Matter 2006", 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions
การบริหารจัดการเมืองอัจฉริยะศูนย์กลางการค้าการลงทุนการท่องเที่ยวและไมซ์ในอนุภูมิภาคลุ่มแม่น้ำโขงตอนบน 4 จังหวัด ประเทศไทย
Creators: name: บุญเพ็ง สิทธิวงษา
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2024
Subjects: การบริหารจัดการ
เมืองอัจฉริยะ
การท่องเที่ยวและไมซ์
อนุลุ่มแม่น้ำโขงตอนบน

description: วารสารราชภัฏสุรินทร์วิชาการ, 2, 1, 1-18
ETHOS -- An Effective Theory of Structure Formation: Impact of Dark Acoustic Oscillations on Cosmic Dawn
Creators: name: Muñoz, Julian B.
name: Bohr, Sebastian
name: Cyr-Racine, Francis-Yan
name: Zavala, Jesús
name: Vogelsberger, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Upcoming data of the 21-cm hydrogen line during cosmic dawn ($z\sim 10-30$) will revolutionize our understanding of the astrophysics of the first galaxies. Here we present a case study on how to exploit those same measurements to learn about the nature of dark matter (DM) at small scales. Focusing on the Effective Theory of Structure Formation (ETHOS) paradigm, we run a suite of simulations covering a broad range of DM microphysics, connecting the output of $N$-body simulations to dedicated 21-cm simulations to predict the evolution of the 21-cm signal across the entire cosmic dawn. We find that observatories targeting both the global signal and the 21-cm power spectrum are sensitive to all ETHOS models we study, and can distinguish them from CDM if the suppression wavenumber is smaller than $k\approx 300\, h/$Mpc, even when accounting for feedback with a phenomenological model. This is an order of magnitude smaller comoving scales than currently constrained by other data sets, including the Lyman-$α$ forest. Moreover, if a prospective 21-cm detection confirmed a deficiency of power at small scales, we show that ETHOS models with strong dark acoustic oscillations can be discriminated from the pure suppression of warm dark matter, showing the power of 21-cm data to understand the behavior of DM at the smallest physical scales.
description: 16 pages, 16 figures. Comments are welcome
Multi-fidelity robust design optimization of an ORC turbine for high temperature waste-heat recovery
Creators: name: Serafino, Aldo
name: Benoit Obert
name: Cinnella, Paola
Publisher: name: Technical University of Munich
Year: 2021

description: The ORC technology is subject to manifold sources of uncertainty that can have a severe impact on the thermodynamic and economic efficiency of plant components, particularly when the system is operated at off-design conditions. In this contribution we focus on the development of ORC turbines with stable performance under uncertainty: a novel multi-fidelity robust design optimization (RDO) strategy is used to design the first nozzle of an ORC turbine for high temperature waste-heat recovery. For this kind of application, the turbine inlet and outlet conditions may vary randomly over a large range. The RDO strategy combines parsimonious uncertainty quantification techniques with a multi-objective genetic algorithm optimizer based on surrogate models. The multi-fidelity approach allows to estimate with high accuracy and with a low computational cost the statistical moments of the probability distribution function of the quantity of interest, which here is the entropy generation within the cascade. To improve the accuracy of the surrogate model coupled with the optimizer, the multi-objective expected improvement criterion is adopted. The optimization converges to an efficient optimum solution, ensuring improved and stable performance over the whole considered range of uncertain operating conditions and with a computational cost that is significantly lower than other RDO approaches proposed in literature.
Control of Enzymatic Browning in Apple and Potato Purees by Using Guava Extract
Creators: name: Poonsiri Thipnate
name: Sukhontha Sukhonthara
Publisher: name: Silpakorn University Research and Development Institute
Year: 2015
Subjects: Apple, Enzymatic browning, Guava, Polyphenol oxidase, Potato

description: 2, 9, Silpakorn University Science and Technology Journal
การมีส่วนร่วมของประชาชนในการพัฒนาการท่องเที่ยวเชิงวัฒนธรรมของชุมชนบ้านร่อนทอง ตำบลร่อนทอง อำเภอสตึก จังหวัดบุรีรัมย์
Creators: name: ชัยชนะ สีละมุน
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2024
Subjects: การมีส่วนร่วม
การท่องเที่ยวเชิงวัฒนธรรม
การพัฒนา

description: วารสารราชภัฏสุรินทร์วิชาการ, 2, 1, 19-30
Phenomenology of lepton-nucleus DIS
Creators: name: Kulagin, S. A.
name: Petti, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The results of recent phenomenological studies of unpolarized nuclear deep-inelastic scattering are discussed and applied to calculate neutrino charged-current structure functions and cross sections for a number of nuclei.
description: 6 pages, 5 figures, to appear in Proceedings of 4th International Workshop On Neutrino-Nucleus Interactions In The Few-GeV Region (NuInt05), 26-29 Sep. 2005, Okayama, Japan
Kinetically-stabilized Ferroelectricity in Bulk Singlecrystalline HfO2:Y without Wake-up Effects
Creators: name: Xu, Xianghan
name: Huang, Fei-Ting
name: Qi, Yubo
name: Singh, Sobhit
name: Rabe, Karin M.
name: Obeysekera, Dimuthu
name: Yang, Junjie
name: Chu, Ming-Wen
name: Cheong, Sang-Wook
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: HfO2, a simple binary oxide, holds ultra-scalable ferroelectricity integrable into silicon technology. Polar orthorhombic (Pbc21) form in ultra-thin-films ascribes as the plausible root-cause of the astonishing ferroelectricity, which has thought not attainable in bulk crystals. Though, perplexities remain primarily due to the polymorphic nature and the characterization challenges at small-length scales. Herein, utilizing a state-of-the-art Laser-Diode-heated Floating Zone technique, we report ferroelectricity in bulk single-crystalline HfO2:Y as well as the presence of anti-polar Pbca phase at different Y concentrations. Neutron diffraction and atomic imaging demonstrate (anti-)polar crystallographic signatures and abundant 90o/180o ferroelectric domains in addition to the switchable polarization with little wake-up effects. Density-functional theory calculations suggest that the Yttrium doping and rapid cooling are the key factors for the desired phase. Our observations provide new insights into the polymorphic nature and phase controlling of HfO2, remove the upper size limit for ferroelectricity, and also pave a new road toward the next-generation ferroelectric devices.
description: 34 pages. This is the original preprint before peer review. The final version has been accepted by Nature Materials
ORC system optimisation: Innovative exhaust heat exchanger, in-engine block heat exchanger and zero impact condensor
Creators: name: Rops, Cor
name: Tahmid Hossain
name: Patrique Boerboom
Publisher: name: Technical University of Munich
Year: 2021

description: Waste Heat Recovery (WHR) systems, especially Organic Rankine Cycle (ORC) based, have the potential to significantly reduce fuel consumption. Current state of the art systems typically reduce the fuel consumption by 3-6%. However, the ORC systems still add excessive mass and complexity in order to become economically attractive. Focus on the optimization of a single aspect will not bring the fuel reduction percentages in the double digit numbers. In this paper we propose to combine various proposed system improvements in combination with a new condenser method. Implementation of the stable evaporation method developed by TNO (Dutch organisation for Applied Technological Research) in evaporative heat exchangers may improve their capacity by 30%. Next, additional heat sources may be used. The Ingenieurgesellschaft Auto und Verkehr (IAV) showed the opportunity to retrieve the heat from the engine itself as well. This innovation may largely benefit from integrating the stable evaporation method of TNO. Finally, TNO has found an innovative implementation of the condenser which is able to release tens of kW’s with no penalty in the form of increased drag or fan power. This paper reasons, by combining all these aspects, a potential fuel reduction of 12-15% can be achieved
Properties of $B_c$ meson
Creators: name: Rai, Ajay Kumar
name: Vinodkumar, P C
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The mass spectrum of $c \bar b$ meson is investigated with an effective quark-antiquark potential of the form $\frac{-α_c}{r}$ + $A r^ν$ with $ν$ varying from 0.5 to 2.0. The S and P-wave masses, pseudoscalar decay constant, weak decay partial widths in spectator model and the lifetime of $B_c$ meson are computed. The properties calculated here are found to be in good agreement with other theoretical and experimental values at potential index, $ν=1$.
description: 7 Pages, Presented in DAE-BRNS Workshop on Hadron Physics, Puri, India
การพัฒนาความสามารถในการแก้ปัญหาทางคณิตศาสตร์ เรื่อง กรณฑ์ที่สอง โดยการจัดการเรียนรู้เชิงรุกร่วมกับอินโฟกราฟิก สำหรับนักเรียนชั้นมัธยมศึกษาปีที่ 2
Creators: name: สุภาพร ธรรมประชา
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2024
Subjects: ความสามารถในการแก้ปัญหาทางคณิตศาสตร์
กรณฑ์ที่สอง
การจัดการเรียนรู้เชิงรุก
อินโฟกราฟิก

description: วารสารราชภัฏสุรินทร์วิชาการ, 2, 1, 31-48
Essential Prompts for ChatGPT
Creators: name: Schuster, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Music Source Separation
Vocal Timbre
Spectral Centroid
Evaluation Metrics
Mean Absolute Error of Spectral Centroids (MAESC)
Spectral Features
Audio Signal Processing
Vocal Recording
Music Information Retrieval (MIR)
Timbre Preservation
Music Technology

description: Modern music source separation (MSS) algorithms are able to separate individual tracks from a produced audio mixture. This can be achieved with state-of-the-art Deep Neural Networks. However, there may be limitations in the evaluation of the various methods. Purely objective measurements such as the Signal-to-Distortion Ratio (SDR) or the scale-invariant Signal-to-Distortion Ratio (SI-SDR) often provide sufficiently "good" results, but neglect subjective assessments of sound quality such as timbre and thus falsify the actual perception of human evaluation.

For this thesis, Python scripts were created in Microsoft's Visual Studio Code version 1.92 to generate data and graphics represent to the audio files. A virtual environment created with Conda version 24.4 and Python version 3.11 was used. Essential libraries were matplotlib, librosa and mir_eval. Both numpy and panda were used for mathematical and statistical applications. ChatGPT version 3.5 generated a set of code blocks that were fundamental for the software. Throughout the process, data was analysed in Microsoft's Excel version 16.89.

The process of generating code using ChatGPT version 3.5 was as follows: simple prompts with the desired calculations were entered. The generated code was then copied and verified. Modified code snippets were then again entered into the chat and further calculation requirements were formulated on an iterative basis. The code was continuously improved and optimised. Constant review, adaption and correction ensured a correct development process.

The detailed chat history is available in the following document to ensure that academic guidelines are adhered to.
Experimental transient analysis of micro-ORC system for low-grade heat recovery
Creators: name: Bianchi, Michele
name: Branchini, Lisa
name: De Pascale, Andrea
name: Melino, Francesco
name: Ottaviano, Saverio
name: Peretto, Antonio
name: Torricelli, Noemi
Publisher: name: Technical University of Munich
Year: 2021

description: This paper presents the experimental analysis conducted on a micro-ORC system, characterized by power output in the kW-scale and employing a radial piston expander. The system operates with heat source temperature below 90 °C and uses R134a as working fluid. An experimental campaign has been performed with the specific purpose of evaluating the response of the micro-ORC system to transient conditions. The response time and settling time are calculated and compared among the key output variables, for different cases of increasing and decreasing variations of the hot water temperature, feedpump speed and external electric load. The behavior of the system during a start-up operation is also analyzed. As expected, the system key variables are more sensitive (i.e. show lower response time) to the variation of the pump speed and of the electric load, than to the change of the hot water temperature. The results of this analysis can provide the basis for the development of efficient control strategies to be implemented on the test bench.
บทบาทมหาวิทยาลัยราชภัฏกับความเป็นมหาวิทยาลัยเพื่อการพัฒนาท้องถิ่น
Creators: name: สัญญา เคณาภูมิ
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2024
Subjects: บทบาท
มหาวิทยาลัยราชภัฏ
มหาวิทยาเพื่อการพัฒนาท้องถิ่น

description: วารสารราชภัฏสุรินทร์วิชาการ, 2, 1, 49-70
พระเจ้าจิตรเสนกับการสร้างราชอาณาจักรเจนละในยุคขอมโบราณ
Creators: name: พระเสกสรร ฐานยุตฺโต (ศรีทน)
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2024
Subjects: พระเจ้าจิตรเสน
อาณาจักรเจนละ
ยุคขอมโบราณ

description: วารสารราชภัฏสุรินทร์วิชาการ, 2, 1, 71-88
Effects of Destriping Errors on CMB Polarisation Power Spectra and and Pixel Noise Covariances
Creators: name: Efstathiou, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Low frequency detector noise in CMB experiments must be corrected to produce faithful maps of the temperature and polarization anisotropies. For a Planck-type experiment the low frequency noise corrections lead to residual stripes in the maps. Here I show that for a ring torus and idealised detector geometry it is possible to calculate analytically the effects of destriping errors on the temperature and polarization power spectra. It is also possible to compute the pixel-pixel noise covariances for maps of arbitrary resolution. The analytic model is compared to numerical simulations using a realistic detector and scanning geometries. We show that Planck polarization maps at 143 GHz should be signal dominated on large scales. Destriping errors are the dominant source of noise for the temperature and polarization power spectra at multipoles ell < 10. A fast Monte-Carlo method for characterising noise, including destriping errors, is described that can be applied to Planck. This Monte-Carlo method can be used to quantify pixel-pixel noise covariances and to remove noise biases in power spectrum estimates.
description: 19 pages submitted to MNRAS
Influence of tensile stress on the magnetic flux leakage signal of the coated steel belt
Creators: name: Liu, Zhaoting
name: Liu, Yanlin
name: Shen, Chuan
name: Wei, Liming
name: Wu, Jianbo
name: Yang, Wenhui
name: Huang, Kewen
name: Miao, Piyu
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biophysics
Medicine
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: The safety of coated steel belts (CSBs) is crucial for reliable elevator operation, as they are critical components in elevator systems. Magnetic flux leakage (MFL) testing is the preferred non-destructive method for evaluating CSBs due to its high sensitivity. Previous studies overlooked tensile stress's impact on in-service MFL testing of CSBs, potentially resulting in inaccurate defect assessments. This research aims to investigate the impact of tensile stress on the MFL signal of CSBs by developing a theoretical model, conducting finite element simulations, and performing experimental verification. In this paper, the rectangular edge defects are considered as the primary defect type in CSBs, and the applied stress on the CSBs varies from 30 MPa to 160 MPa. Under the above conditions, a linear relationship between MFL signal of CSBs and stress is established based on the simplified Jiles-Atherton model and magnetic dipole model suitable for CSBs. The finite element simulation and experiments further indicate that the MFL signal of CSBs increases linearly with the increasing tensile stress. The primary contributions of this study are establishing an MFL model suitable for CSBs and uncovering the linear relationship between the MFL signal of CSBs and tensile stress.
Compact and high efficient Rankine-evaporator following economical targets
Creators: name: Ambros, Peter
name: Raab, Daniel
name: Keite, Markus
name: Raab, Florian
name: Opferkuch, Frank
Publisher: name: Technical University of Munich
Year: 2021

description: Within the public funded project “KompACT”, Rankine cycle evaporators for Waste Heat Recovery systems are under development. Target for the evaporator development is the selection of designs being capable for future economical operations under real world industrial conditions. Therefore, specific focus was set on providing the best economic key values under consideration of earnings based on heat transfer performance and correlated total costs of ownership. The evaluation of different evaporator designs and the selection of the final design are guided by a utility analysis methodology developed within the project. Two conventional steam boilers serve as a component benchmark. Currently, two evaporator designs based on the Twin-Round-Tube-principle were selected: The TwinRound-Tube-Box-Design B1 is extremely compact, light, flexible and targets applications for low and medium heat performance ranges up to approx. 350 kWth. Due to the compact size, installation and operation costs are significantly reduced, offering the best economic values. The Twin-Round-Tube-Cylinder-Design Z3 provides maximum performance and can easily be adapted to different customer requirements. From an economic perspective, the design seems promising to serve a power range of 200 kWth up to 1,000 kWth as industrial target applications. In 2021, thermal tests will be done on a prototype test bench at TH Nuernberg to validate thermal simulations, prove thermal function and guide the final manufacturing design work. In 2022, it is planned to build up a full scale 250 kWth-prototype providing 40 kWel to be installed and operated at the 526 kWel - MicroRankine pilot plant in Nuernberg.
The COS Absorption Survey of Baryon Harbors: Unveiling the Physical Conditions of Circumgalactic Gas through Multiphase Bayesian Ionization Modeling
Creators: name: Haislmaier, Karl J.
name: Tripp, Todd M.
name: Katz, Neal
name: Prochaska, J. Xavier
name: Burchett, Joseph N.
name: O'Meara, John M.
name: Werk, Jessica K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Quasar absorption systems encode a wealth of information about the abundances, ionization structure, and physical conditions in intergalactic and circumgalactic media. Simple (often single-phase) photoionization models are frequently used to decode such data. Using five discrete absorbers from the COS Absorption Survey of Baryon Harbors (CASBaH) that exhibit a wide range of detected ions (e.g., Mg II, S II--S VI, O II--O VI, Ne VIII), we show several examples where single-phase ionization models cannot reproduce the full set of measured column densities. To explore models that can self-consistently explain the measurements and kinematic alignment of disparate ions, we develop a Bayesian multiphase ionization modeling framework that characterizes discrete phases by their unique physical conditions and also investigates variations in the shape of the UV flux field, metallicity, and relative abundances. Our models require at least two (but favor three) distinct ionization phases ranging from $T \approx 10^{4}$ K photoionized gas to warm-hot phases at $T \lesssim 10^{5.8}$ K. For some ions, an apparently single absorption "component" includes contributions from more than one phase, and up to 30% of the H I is not from the lowest ionization phase. If we assume that all of the phases are photoionized, we cannot find solutions in thermal pressure equilibrium. By introducing hotter, collisionally ionized phases, however, we can achieve balanced pressures. The best models indicate moderate metallicities, often with sub-solar N/$α$, and, in two cases, ionizing flux fields that are softer and brighter than the fiducial Haardt & Madau UV background model.
description: Accepted for publication in MNRAS
Extended, regular HI structures around early-type galaxies
Creators: name: Oosterloo, T.
name: Morganti, R.
name: Sadler, E. M.
name: van der Hulst, J. M.
name: Serra, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the morphology and kinematics of the HI of a sample of 30 southern gas-rich early-type galaxies selected from the HI Parkes All-Sky Survey (HIPASS). This is the largest collection of high-resolution HI data of a homogeneously selected sample. Given the sensitivity of HIPASS, these galaxies represent the most HI-rich early-type galaxies. In two-thirds of the galaxies, we find the HI to be in a large, regular disk- or ring-like structure that in some cases is strongly warped. In the remaining cases we find the HI distributed in irregular tails or clouds offset from the galaxy. The giant, regular HI structures can be up to ~200 kpc in diameter and contain up to 10^10 M_sun of HI. The incidence of irregular HI structures appears to be somewhat higher in elliptical galaxies, but the large, regular structures are observed in both elliptical and S0 galaxies and are not strictly connected to the presence of a stellar disk. If these two types of galaxies are the result of different formation paths, this is not strongly reflected in the characteristics of the HI. The size and the regular kinematics of the HI structures imply that the neutral hydrogen must have settled in these galaxies several Gyr ago. Merging as well as gas accretion from the IGM are viable explanations for the origin of the gas in these galaxies. The average column density of the HI is low so that little star formation is expected to occur and these early-type galaxies can remain gas rich for very long periods of time. The large HI structures likely represent key structures for tracing the origin and evolution of these galaxies.
description: Accepted for publication in A&A, 13 pages, 6 figures. A version with full resolution figures is available at http://www.astron.nl/~morganti/Papers/hipass.pdf
OʻZBEK IJTIMOIY PSIXOLOGIYASIDA YOSHLARNI NIKOH OLDI YETUKLIKKA TAYYORLASH MUAMMOSINING OʻRGANILGANLIK DARAJASI
Creators: name: Sharapova Sabohat Djabborovna Guliston davlat universiteti psixologiya fanlari doktori, professor Normamatova Nazira Alijon qizi Guliston davlat universiteti tayanch doktoranti
Publisher: name: Zenodo
Year: 2025

description: Oʻzbek ijtimoiy psixologiyasida yoshlarni nikoh oldi yetuklikka tayyorlash muammosi jamiyatning rivojlanish jarayonida, ayniqsa, oila institutining mustahkamligi va yoshlarning ijtimoiy-psixologik barqarorligi nuqtai nazaridan juda muhim ahamiyatga ega. Nikoh – bu nafaqat ikki kishining o‘zaro sevgi va sadoqatini ifodalovchi institut, balki jamiyatning asosiy tashkil etuvchi qismlaridan biri hisoblanadi. Shuning uchun ham yoshlarni nikohga tayyorlash masalasi, nafaqat individual darajada, balki butun jamiyatning kelajagi uchun ham muhim hisoblanadi
ภาวะผู้นำทางการศึกษายุคการพลิกผันของดิจิทัลกับการพัฒนาที่ยั่งยืน
Creators: name: ณัฐกุล ชอบใจ
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2024
Subjects: ภาวะผู้นำทางการศึกษา
ยุคความพลิกผันของดิจิทัล
การพัฒนาที่ยั่งยืน

description: วารสารราชภัฏสุรินทร์วิชาการ, 2, 1, 89-104
GRB 050505: A high redshift burst discovered by Swift
Creators: name: Hurkett, C. P.
name: Osborne, J. P.
name: Page, K. L.
name: Rol, E.
name: Goad, M. R.
name: O'Brien, P. T.
name: Beardmore, A.
name: Godet, O.
name: Burrows, D. N.
name: Tanvir, N. R.
name: Levan, A.
name: Zhang, B.
name: Malesani, D.
name: Hill, J. E.
name: Kennea, J. A.
name: Chapman, R.
name: La Parola, V.
name: Perri, M.
name: Romano, P.
name: Smith, R.
name: Gehrels, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery and subsequent multi-wavelength afterglow behaviour of the high redshift (z = 4.27) Gamma Ray Burst GRB 050505. This burst is the third most distant burst, measured by spectroscopic redshift, discovered after GRB 000131 (z = 4.50) and GRB 050904 (z = 6.29). GRB 050505 is a long GRB with a multipeaked gamma-ray light curve, with a duration of T_90 = 63+/-2 s and an inferred isotropic release in gamma-rays of ~4.44 x 10^53 ergs in the 1-10^4 keV rest frame energy range. The Swift X-Ray Telescope followed the afterglow for 14 days, detecting two breaks in the light curve at 7.4(+/-1.5) ks and 58.0 (+9.9/-15.4) ks after the burst trigger. The power law decay slopes before, between and after these breaks were 0.25 (+0.16/-0.17), 1.17 (+0.08/-0.09) and 1.97 (+0.27/-0.28) respectively. The light curve can also be fit with a `smoothly broken' power law model with a break observed at ~ T+18.5 ks, with decay slopes of ~0.4 and ~1.8 before and after the break respectively. The X-ray afterglow shows no spectral variation over the course of the Swift observations, being well fit with a single power law of photon index ~1.90. This behaviour is expected for the cessation of continued energisation of the ISM shock followed by a break caused by a jet, either uniform or structured. Neither break is consistent with a cooling break. The spectral energy distribution indeed shows the cooling frequency to be below the X-ray but above optical frequencies. The optical -- X-ray spectrum also shows that there is significant X-ray absorption in excess of that due to our Galaxy but very little optical/UV extinction, with E(B-V) ~0.10 for a SMC-like extinction curve.
description: 9 pages, 6 figures. Accepted by MNRAS
Structure Preservation for the Deep Neural Network Multigrid Solver
Creators: name: Margenberg, Nils
name: Lessig, Christian
name: Richter, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The simulation of partial differential equations is a central subject of numerical analysis and an indispensable tool in science, engineering and related fields. Existing approaches, such as finite elements, provide (highly) efficient tools but deep neural network-based techniques emerged in the last few years as an alternative with very promising results. We investigate the combination of both approaches for the approximation of the Navier-Stokes equations and to what extent structural properties such as divergence freedom can and should be respected. Our work is based on DNN-MG, a deep neural network multigrid technique, that we introduced recently and which uses a neural network to represent fine grid fluctuations not resolved by a geometric multigrid finite element solver. Although DNN-MG provides solutions with very good accuracy and is computationally highly efficient, we noticed that the neural network-based corrections substantially violate the divergence freedom of the velocity vector field. In this contribution, we discuss these findings and analyze three approaches to address the problem: a penalty term to encourage divergence freedom of the network output; a penalty term for the corrected velocity field; and a network that learns the stream function, i.e. the scalar potential of the divergence free velocity vector field and which hence yields by construction divergence free corrections. Our experimental results show that the third approach based on the stream function outperforms the other two and not only improves the divergence freedom but in particular also the overall fidelity of the simulation.
Elicitation - switch-reference and time
Creators: name: Piño Bonangué, José
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with José Piño Bonangué. Topics covered include the expression of time in switch-reference constructions, attitude reports, and the syntax of nominals.
Evaluation of organic Rankine cycle using low GWP fluids as a technology for Algerian cement industries waste heat recovery
Creators: name: Redjeb, Youcef
name: Benato, Alberto
name: Stoppato, Anna
name: Khatima Kaabeche-Djerafi
Publisher: name: Technical University of Munich
Year: 2021

description: Cement factories are among the most energy-intensive industries due to the huge consumption of the clinker manufacturing process (3.2-6.3 GJton-1 ). In addition, the process is characterized by high energy losses since there are two sources of waste heat at high temperature. To improve the system overall efficiency and reduces its emission per ton of cement produced, in this work the authors evaluate the benefits of installing an organic Rankine cycle (ORC) unit adopting low GWP working fluids to recover the waste heat. To design and optimize the ORC cycle, a tool has been developed in MATLAB environment and linked with REFPROP and CoolProp databases. It permits to determine the most appropriate cycle configuration between two different options, and to select the working fluid among 12 low GWP organic media. Being the waste heat at relatively high-temperature values, multistage turbines are used, and a thermal loop is adopted between the waste heat fluxes and the organic fluid for safety reasons. The waste heat sources operating conditions are acquired during an experimental campaign conducted on an in-operation cement industry located in the North of Algeria. The two identified heat sources are recovered via an oil loop and used to feed the ORC. The thermodynamic optimization in terms of net power output is performed, while an economic analysis is carried out to verify the feasibility of the technology through the Algerian techno-economic conditions. The optimization outcomes reveal that the recuperative configuration using pentane as working fluids guarantees the best thermodynamic performance while isopentane and R1233zd(E) guarantee to achieve a net output power 2.1% and 4.6% lower than pentane. However, the economic analysis reveals that the ORC adopting R1233zd(E) ensures the best economic results. Thus, considering also the environmental and safety aspects, the choice fell on the recuperative configuration using R1233zd(E) as working medium which guarantees a net power output of 3.33 MW, a net present value of 6.39 M$, a payback time of 7 years and a higher environmental sustainability.
Calliophis gracilis Gray 1835
Creators: name: Figueroa, Alex
name: Low, Martyn E. Y.
name: Lim, Kelvin K. P.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Elapidae
Calliophis
Calliophis gracilis

description: Calliophis gracilis Gray, 1835 — Native; Indeterminate.
Calliophis gracilis Gray, 1835 [in 1832–1835]: pl. 86, figs. 1–3, caption. Holotype: BMNH 1946.1.19.17, by original designation. Type locality: “ Penang ”, Peninsular Malaysia.
Spotted Coral Snake (Figure 21H)
Singapore records.
Elaps nigromaculatus Cantor, 1839a: 33.— Cantor, 1847c: 1029, 1071, 1074, 1078.— Flower, 1899: 614.
Callophis gracilis — Ģnther, 1864: xxiii, 349.—Theobald, 1876: 230.— Davison, 1892: 92.— Boulenger, 1896: 397.— Flower, 1896: 894.— Flower, 1899: 692.—Ridley, 1899: 209.— Boulenger, 1912: 203.— de Rooij, 1917: 250.—Sworder, 1923: 72.— de Haas, 1950: 600.
Calliophis gracilis —K.K.P. Lim & L.M. Chou, 1990: 54.—K.K.P. Lim & F.L.K. Lim, 1992: 148.—Golay et al., 1993: 123.—L.M. Chou et al., 1994: 105.— David & Vogel, 1996: 150.—Chan-ard et al., 1999: 38.— Iskandar & Colijn, 2001: 124.—K.P. Lim & F.L.K. Lim, 2002: 148.—N. Baker & K.P. Lim, 2008: 169.— Das, 2010: 315.—N. Baker & K.P. Lim, 2012: 169.—Wallach et al., 2014: 145.— Cox et al., 2018: 60.— Charlton, 2020: 229.
Remarks. One of Singapore’s rarest snakes, C. gracilis is known from only two specimens, one collected in 1839 and one in 1897. The first was reported by Cantor (1839a) who described it as a new species, Elaps nigromaculatus (Table 1), which Ģnther (1864) later synonymised with C. gracilis. The second specimen was collected by Flower in October 1897 (Flower 1899). Neither of the two authors provided locality data, but we consider BTNR as the most likely location since C. gracilis prefers hilly habitats (Tweedie 1983; Chan & Norhayati 2009).
Occurrence. Only known from two specimens predating 1899. Likely extirpated.
Singapore conservation status. Not Evaluated.
Conservation priority. Immediate priority, if rediscovered.
IUCN conservation status. Data Deficient [2012].
LKCNHM & NHMUK Museum specimens. Singapore (no locality): BMNH 1898.4.2.27 (no date).
Additional Singapore museum specimens. No specimens.
Singapore localities. No published localities.
description: Published as part of Figueroa, Alex, Low, Martyn E. Y. & Lim, Kelvin K. P., 2023, Singapore's herpetofauna: updated and annotated checklist, history, conservation, and distribution, pp. 1-378 in Zootaxa 5287 (1) on page 192, DOI: 10.11646/zootaxa.5287.1.1, http://zenodo.org/record/7960319
Two-photon decays of hadronic molecules
Creators: name: Hanhart, C.
name: Kalashnikova, Yu. S.
name: Kudryavtsev, A. E.
name: Nefediev, A. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In many calculations of the two--photon decay of hadronic molecules, the decay matrix element is estimated using the wave function at the origin prescription, in analogy to the two-photon decay of parapositronium. We question the applicability of this procedure to the two-photon decay of hadronic molecules for it introduces an uncontrolled model dependence into the calculation. As an alternative approach, we propose an explicit evaluation of the hadron loop. For shallow bound states, this can be done as an expansion in powers of the range of the molecule binding force. In the leading order one gets the well-known point-like limit answer. We estimate, in a self-consistent and gauge invariant way, the leading range corrections for the two-photon decay width of weakly bound hadronic molecules emerging from kaon loops. We find them to be small. The role of possible short-ranged operators and of the width of the scalars remains to be investigated.
description: LaTeX2e, 26 pages, new figure and additional appendix added, version to appear in Phys.Rev.D
Do All Interplanetary Coronal Mass Ejections Have A Magnetic Flux Rope Structure Near 1 AU?
Creators: name: Song, Hongqiang
name: Zhang, Jie
name: Cheng, Xin
name: Li, Gang
name: Hu, Qiang
name: Li, Leping
name: Chen, Shujun
name: Zheng, Ruisheng
name: Chen, Yao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Interplanetary coronal mass ejections (ICMEs) often consist of a shock wave, sheath region, and ejecta region. The ejecta regions are divided into two broad classes: magnetic clouds (MC) that exhibit the characteristics of magnetic flux ropes and non-magnetic clouds (NMC) that do not. As CMEs result from eruption of magnetic flux ropes, it is important to answer why NMCs do not have the flux rope features. One claims that NMCs lose their original flux rope features due to the interactions between ICMEs or ICMEs and other large scale structures during their transit in the heliosphere. The other attributes this phenomenon to the geometric selection effect, i.e., when an ICME has its nose (flank, including leg and non-leg flanks) pass through the observing spacecraft, the MC (NMC) features will be detected along the spacecraft trajectory within the ejecta. In this Letter, we examine which explanation is more reasonable through the geometric properties of ICMEs. If the selection effect leads to different ejecta types, MCs should have narrower sheath region compared to NMCs from the statistical point of view, which is confirmed by our statistics. Besides, we find that NMCs have the similar size in solar cycles 23 and 24, and NMCs are smaller than MCs in cycle 23 but larger than MCs in cycle 24. This suggests that most NMCs have their leg flank pass through the spacecraft. Our geometric analyses support that all ICMEs should have a magnetic flux rope structure near 1 AU.
description: 16 pages, 4 figures
การบริการสาธารณะขององค์กรปกครองส่วนท้องถิ่นไทย : อำนาจและหน้าที่ รูปแบบ และประเด็นปัญหา
Creators: name: วรฉัตร วริวรรณ
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2024
Subjects: การบริการสาธารณะ
รูปแบบการจัดทำบริการสาธารณะ
องค์กรปกครองส่วนท้องถิ่น

description: วารสารราชภัฏสุรินทร์วิชาการ, 2, 1, 105-120
Characterization of two-level system noise for microwave kinetic inductance detector comprising niobium film on silicon substrate
Creators: name: Sueno, Yoshinori
name: Honda, Shunsuke
name: Kutsuma, Hiroki
name: Mima, Satoru
name: Otani, Chiko
name: Oguri, Shugo
name: Suzuki, Junya
name: Tajima, Osamu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A microwave kinetic inductance detector (MKID) is a cutting-edge superconducting detector. It comprises a resonator circuit constructed with a superconducting film on a dielectric substrate. To expand its field of application, it is important to establish a method to suppress the two-level system (TLS) noise that is caused by the electric fluctuations between the two energy states at the surface of the substrate. The electric field density can be decreased by expanding the strip width (S) and gap width from the ground plane (W) in the MKID circuit, allowing the suppression of TLS noise. However, this effect has not yet been confirmed for MKIDs made with niobium films on silicon substrates. In this study, we demonstrate its effectiveness for such MKIDs. We expanded the dimension of the circuit from (S, W) = (3.00 $μ$m, 4.00 $μ$m) to (S, W) = (5.00 $μ$m, 23.7 $μ$m), and achieved an increased suppression of 5.5 dB in TLS noise.
description: 14 pages, 12 figures