cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The nuclei of comets 7P/Pons-Winnecke, 14P/Wolf and 92P/Sanguin
Creators: name: Snodgrass, C.
name: Fitzsimmons, A.
name: Lowry, S. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Jupiter Family comets (JFCs) are short period comets which have recently entered the inner solar system, having previously orbited in the Kuiper Belt since the formation of the planets. We used two nights on the 3.6m New Technology Telescope (NTT) at the European Southern Observatory, to obtain VRI photometry of three JFCs; 7P/Pons-Winnecke, 14P/Wolf and 92P/Sanguin. These were observed to be stellar in appearance. We find mean effective radii of 2.24 \pm 0.02 km for 7P, 3.16 \pm 0.01 km for 14P and 2.08 \pm 0.01 km for 92P, assuming a geometric albedo of 0.04. From light-curves for each comet we find rotation periods of 7.53 \pm 0.10 and 6.22 \pm 0.05 hours for 14P and 92P respectively. 7P exhibits brightness variations which imply a rotation period of 6.8 \le P_rot \le 9.5 hours. Assuming the nuclei to be ellipsoidal the measured brightness variations imply minimum axial ratios a/b of 1.3 \pm 0.1 for 7P and 1.7 \pm 0.1 for both 14P and 92P. This in turn implies minimum densities of 0.23 \pm 0.08 g cm^{-3} for 7P, 0.32 \pm 0.02 g cm^{-3} for 14P and 0.49 \pm 0.06 g cm^{-3} for 92P. Finally, we measure colour indices of (V-R) = 0.40 \pm 0.05 and (R-I) = 0.41 \pm 0.06 for 7P/Pons-Winnecke, (V-R) = 0.57 \pm 0.07 and (R-I) = 0.51 \pm 0.06 for 14P/Wolf, and (V-R) = 0.54 \pm 0.04 and (R-I) = 0.54 \pm 0.04 for 92P/Sanguin.
description: 12 pages, 14 figures, accepted for publication in A&A
Control of a virtual low pressure aluminum wheel die casting process
Creators: name: Vetter, Richard Anthony
Publisher: name: University of British Columbia
Year: 2009

description: This thesis outlines the development of an advanced control solution, specifically Model Based Predictive Control (MPC), for an aluminum wheel low pressure die casting process. The control solution development was performed offline using a high-fidelity 3- D finite element model as a virtual process on which open and closed loop experiments were performed. The open loop experiments facilitated the development of a reducedorder state-space model to predict the approximate input-output behaviour of the casting process. The implemented MPC controller used this state-space model to regulate die temperatures in the virtual process during simulated disturbance scenarios. Two disturbances typically found in the industrial process were simulated. The first simulated disturbance was a ramping metal temperature that simulated the temperature behaviour of the molten metal in the industrial process. The second disturbance was variations in the length of time the die remained open after the cast wheel was ejected from the dies. These disturbances caused the die temperatures to deviate from their optimal values which in turn resulted in defective wheels if the deviations were large enough. The developed control solution improved the process performance by rejecting the simulated disturbances and maintaining the die temperatures near their optimal values. The regulation of the die temperatures resulted in a reduction in the number of cycles where defective wheels were likely.
Perturbative, Non-Supersymmetric Completions of the Little Higgs
Creators: name: Batra, Puneet
name: Kaplan, David E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The little Higgs mechanism produces a light 100 GeV Higgs while raising the natural cutoff from 1 TeV to 10 TeV. We attempt an iterative little Higgs mechanism to produce multiple factors of 10 between the cutoff and the 100 GeV Higgs mass in a perturbative theory. In the renormalizable sector of the theory, all quantum corrections to the Higgs mass proportional to mass scales greater than 1 TeV are absent -- this includes quadratically divergent, log-divergent, and finite loops at all orders. However, even loops proportional to scales just a factor of 10 above the Higgs (or any other scalar) mass come with large numerical factors that reintroduce fine-tuning. Top loops, for example, produce an expansion parameter of not 1/(4 pi) but 1/5. The geometric increase in the number of fields at higher energies simply exacerbates this problem. We build a complete two-stage model up to 100 TeV, show that direct sensitivity of the electroweak scale to the cutoff is erased, and estimate the tuning due to large numerical factors. We then discuss the possibility, in a toy model with only scalar and gauge fields, of generating a tower of little Higgs theories and show that the theory quickly becomes a large-N gauge theory with ~ N fundamental scalars. We find evidence that at least this toy model could successfully generate light scalars with an exponentially large cutoff in the absence of supersymmetry or strong dynamics. The fine-tuning is not completely eliminated, but evidence suggests that this result is model dependent. We then speculate as to how one might marry a working tower of fields of this type at high scales to a realistic theory at the weak scale.
description: 26 (+1) pages, 9 figures
Design and construction of the IMACS-IFU, a 2000-element integral field unit
Creators: name: Schmoll, J.
name: Dodsworth, G. N.
name: Content, R.
name: Allington-Smith, J. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The IMACS-IFU is an Integral Field Unit built for the IMACS spectrograph at the Magellan-I-Telescope at Las Campanas Observatory. It consists of two rectangular fields of 5 by 7 arcseconds, separated by roughly one arcminute. With a total number of 2000 spatial elements it is the second largest fiber-lenslet based IFU worldwide, working in a wavelength range between 400 and 900 nm. Due to the equally sized fields classical background subtraction, beam switching and shuffling are possible observation techniques. One particular design challenge was the single, half a metre long curved slit in combination with a non telecentric output. Besides the construction some preliminary results are described.
description: 10 pages, 7 figures, 1 table. Proceedings for SPIE poster 5492-175 of SPIE Symposium "Astronomical Telescopes and Instrumentation", June 2004, Glasgow
On exponential sums with Hecke series at central points
Creators: name: Ivić, Aleksandar
Publisher: name: arXiv
Year: 2005
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F72; 11F66; 11M41; 11M06

description: Upper bound estimates for the exponential sum $$ \sum_{K
description: 31 pages
Reduced-order modeling for second-order computational homogenization with applications to geometrically parameterized elastomeric metamaterials
Creators: name: Guo, T.
name: Kouznetsova, V. G.
name: Geers, M. G. D.
name: Veroy, K.
name: Rokoš, O.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: The structural properties of mechanical metamaterials are typically studied with two-scale methods based on computational homogenization. Because such materials have a complex microstructure, enriched schemes such as second-order computational homogenization are required to fully capture their non-linear behavior, which arises from non-local interactions due to the buckling or patterning of the microstructure. In the two-scale formulation, the effective behavior of the microstructure is captured with a representative volume element (RVE), and a homogenized effective continuum is considered on the macroscale. Although an effective continuum formulation is introduced, solving such two-scale models concurrently is still computationally demanding due to the many repeated solutions for each RVE at the microscale level. In this work, we propose a reduced-order model for the microscopic problem arising in second-order computational homogenization, using proper orthogonal decomposition and a novel hyperreduction method that is specifically tailored for this problem and inspired by the empirical cubature method. Two numerical examples are considered, in which the performance of the reduced-order model is carefully assessed by comparing its solutions with direct numerical simulations (entirely resolving the underlying microstructure) and the full second-order computational homogenization model. The reduced-order model is able to approximate the result of the full computational homogenization well, provided that the training data is representative for the problem at hand. Any remaining errors, when compared with the direct numerical simulation, can be attributed to the inherent approximation errors in the computational homogenization scheme. Regarding run times for one thread, speed-ups on the order of 100 are achieved with the reduced-order model as compared to direct numerical simulations.
கார்காலமும் இராமனின் பிரிவுத்துயரமும்
Creators: name: Kala, Sree
Publisher: name: figshare
Year: 2020
Subjects: subject: 200315 Indian Languages
subject: FOS: Languages and literature
subject: 200520 Indian Literature

description: தமிழர் பண்பாட்டுக்குத்தகுந்தவாறு கம்பரின் ரசனையோடு எழுதப்பட்ட காவியம் தமிழர் வாழ்வியலான காதலையும் வீரத்தையும்எடுத்துகூறுகிறது கிட்கிந்தாகாண்டத்தின் பத்தாவது படலமான காரகாலபடலம் இராமனின் பிரிவுத்துயரை வெளிப்படுத்துகிறது கார்கால மாலைப்பொழுது தலைவியின் துன்பத்தை அதிகப்படுத்துவதாகும் உடம்பில் உயிரும் உளதோ என்றுஎண்ணுமளவில் இராமன் துயருற்று மன்மதனை பழித்துரைக்கின்றான்
GATE : a simulation toolkit for PET and SPECT
Creators: name: Jan, S.
name: Santin, G.
name: Strul, D.
name: Staelens, S.
name: Assie, K.
name: Autret, D.
name: Avner, S.
name: Barbier, R.
name: Bardies, M.
name: Bloomfield, P. M.
name: Brasse, D.
name: Breton, V.
name: Bruyndonckx, P.
name: Buvat, I.
name: Chatziioannou, A. F.
name: Choi, Y.
name: Chung, Y. H.
name: Comtat, C.
name: Donnarieix, D.
name: Ferrer, L.
name: Glick, S. J.
name: Groiselle, C. J.
name: Guez, D.
name: Honore, P. -F.
name: Kerhoas-Cavata, S.
name: Kirov, A. S.
name: Kohli, V.
name: Koole, M.
name: Krieguer, M.
name: van der Laan, D. J.
name: Lamare, F.
name: Largeron, G.
name: Lartizien, C.
name: Lazaro, D.
name: Maas, M. C.
name: Maigne, L.
name: Mayet, F.
name: Melot, F.
name: Merheb, C.
name: Pennacchio, E.
name: Perez, J.
name: Pietrzyk, U.
name: Rannou, F. R.
name: Rey, M.
name: Schaart, D. R.
name: Schmidtlein, C. R.
name: Simon, L.
name: Song, T. Y.
name: Vieira, J. -M.
name: Visvikis, D.
name: Van de Walle, R.
name: Wieers, E.
name: Morel, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Medical Physics (physics.med-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Monte Carlo simulation is an essential tool in emission tomography that can assist in the design of new medical imaging devices, the optimization of acquisition protocols, and the development or assessment of image reconstruction algorithms and correction techniques. GATE, the Geant4 Application for Tomographic Emission, encapsulates the Geant4 libraries to achieve a modular, versatile, scripted simulation toolkit adapted to the field of nuclear medicine. In particular, GATE allows the description of time-dependent phenomena such as source or detector movement, and source decay kinetics. This feature makes it possible to simulate time curves under realistic acquisition conditions and to test dynamic reconstruction algorithms. A public release of GATE licensed under the GNU Lesser General Public License can be downloaded at the address http://www-lphe.epfl.ch/GATE/.
Modular-topology optimization with Wang tilings: An application to truss structures
Creators: name: Tyburec, Marek
name: Zeman, Jan
name: Doškář, Martin
name: Kružík, Martin
name: Lepš, Matěj
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Modularity is appealing for solving many problems in optimization. It brings the benefits of manufacturability and reconfigurability to structural optimization, and enables a trade-off between the computational performance of a Periodic Unit Cell (PUC) and the efficacy of non-uniform designs in multi-scale material optimization. Here, we introduce a novel strategy for concurrent minimum-compliance design of truss modules topologies and their macroscopic assembly encoded using Wang tiling, a formalism providing independent control over the number of modules and their interfaces. We tackle the emerging bilevel optimization problem with a combination of meta-heuristics and mathematical programming. At the upper level, we employ a genetic algorithm to optimize module assemblies. For each assembly, we obtain optimal module topologies as a solution to a convex second-order conic program that exploits the underlying modularity, incorporating stress constraints, multiple load cases, and reuse of module(s) for various structures. Merits of the proposed strategy are illustrated with three representative examples, clearly demonstrating that the best designs obtained by our method exhibited decreased compliance: from 56% to 69% compared to the PUC designs.
description: 17 pages, 16 figures
What is Local and for What Foods Does it Matter?
Creators: name: Hu, Wuyang
name: Batte, Marvin T.
name: Woods, Timothy A.
name: Ernst, Stanley C.
name: Hu, Wuyang
name: Batte, Marvin T.
name: Woods, Timothy A.
name: Ernst, Stanley C.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Distance
subject: Food category
subject: Importance rating
subject: Local
subject: Regression

description: Consumer demand for local foods has been increasing dramatically over the past several years. Many food producers and marketers are raising their capacity to incorporate local food. Revenue from local Farmers’ Market and Community Supported Agriculture has become a greater source of income particularly for small and medium-sized farms. This study answers two important questions related to local food that have not been sufficiently addressed before: what is the greatest distance food can travel and still be accepted by consumers as local and is "local" equally important across food categories. Using survey data from two states in the USA, this research found that consumers’ accepted food travel distance may be much shorter than what is generally believed. In addition, there exists a great variation in the importance rating consumers attach to “being local” for different food categories and these differences are related to consumer characteristics.
Accounting for the Effects of Probabilistic Uncertainty During Fast Charging of Lithium-ion Batteries
Creators: name: Kim, Minsu
name: Schaeffer, Joachim
name: Berliner, Marc D.
name: Sagnier, Berta Pedret
name: Findeisen, Rolf
name: Braatz, Richard D.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Batteries are nonlinear dynamical systems that can be modeled by Porous Electrode Theory models. The aim of optimal fast charging is to reduce the charging time while keeping battery degradation low. Most past studies assume that model parameters and ambient temperature are a fixed known value and that all PET model parameters are perfectly known. In real battery operation, however, the ambient temperature and the model parameters are uncertain. To ensure that operational constraints are satisfied at all times in the context of model-based optimal control, uncertainty quantification is required. Here, we analyze optimal fast charging for modest uncertainty in the ambient temperature and 23 model parameters. Uncertainty quantification of the battery model is carried out using non-intrusive polynomial chaos expansion and the results are verified with Monte Carlo simulations. The method is investigated for a constant current--constant voltage charging strategy for a battery for which the strategy is known to be standard for fast charging subject to operating below maximum current and charging constraints. Our results demonstrate that uncertainty in ambient temperature results in violations of constraints on the voltage and temperature. Our results identify a subset of key parameters that contribute to fast charging among the overall uncertain parameters. Additionally, it is shown that the constraints represented by voltage, temperature, and lithium-plating overpotential are violated due to uncertainties in the ambient temperature and parameters. The C-rate and charge constraints are then adjusted so that the probability of violating the degradation acceleration condition is below a pre-specified value. This approach demonstrates a computationally efficient approach for determining fast-charging protocols that take probabilistic uncertainties into account.
description: 6 pages, 5 figures, accepted for ACC 2024
Bubble wall velocity and gravitational wave in the minimal left-right symmetric model
Creators: name: Wang, Dian-Wei
name: Yan, Qi-Shu
name: Huang, Mei
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The bubble wall velocity in the first order phase transition plays an important role in determining both the amplitude and the pivot frequency of stochastic gravitational wave background. In the framework of the minimal left-right symmetric model, we study the wall velocity when the first order phase transition can occur. The wall velocity can be determined by matching the distribution functions in the free particle approximation and the local thermal equilibrium approximation. It is found that the wall velocity can be determined in the range $ 0.2 < v_w < 0.5 $ for the parameter space with the first order phase transition. It is also found that for the case when the wall velocity is close to the speed of sound, the peak amplitude of gravitational wave spectrum can be larger than that in the runaway case. Moreover, It is also found that there exists an approximate power law between the wall velocity and pressure difference between broken and symmetry phases, and the power index is equal to 0.41 or so.
description: 22 pages, 12 figures
South Korean Millers’ Preferences for the Quality Characteristics of Hard White Wheat that is Used in Producing All-purpose Flour
Creators: name: Park, Jaehong
name: Henneberry, Shida Rastegari
name: Park, Jaehong
name: Henneberry, Shida Rastegari
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: International Relations/Trade
subject: Marketing
subject: FOS: Economics and business
subject: Research Methods/ Statistical Methods
subject: Hard White Wheat
subject: South Korean wheat market
subject: Choice-based conjoint analysis
subject: Self-explicated approach
subject: Conditional logit model
subject: Willingness-to-pay

description: Using the choice-based conjoint analysis and self explicated approach, I elicited South Korean millers’ preference and willingness to pay for the quality characteristics of hard white wheat that is used in producing all-purpose flour. In specified seven attributes, test weight, moisture, and price significantly affect to South Korean millers’ utility but protein contents, ash, dockage, and falling number does not. South Korean millers are more willing to pay to change the quality characteristics related to the milling yields and profitability, such as test weight, moisture and dockage. But their willingness-to-pay for protein content is not as big as common expectation. Along with the research of Srinivasan (1997), we found that the self-explicated approach yields a slightly (but not statistically significantly) higher predictive validity than does the choice-based conjoint analysis. The results of this study provide not only guideline of quality standards of hard white wheat, but also focus point that U.S. producers have to intensify among quality characteristics of hard white wheat to create demand in South Korean market.
Is Embedding Entailed in Consumer Valuation of Food Safety Characteristics?
Creators: name: Morkbak, Morten Raun
name: Christensen, Tove
name: Gyrd-Hansen, Dorte E.
name: Olsen, Soren Boye
name: Morkbak, Morten Raun
name: Christensen, Tove
name: Gyrd-Hansen, Dorte E.
name: Olsen, Soren Boye
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Valuation
subject: Choice Experiment
subject: Market Goods
subject: Food Safety
subject: Embedding.

description: Consumers’ preferences for food safety characteristics are investigated with particular focus on existence of an embedding effect. Embedding exists if consumer valuation of food safety is insensitive to scope. Two choice experiments have been conducted valuing food safety in respectively minced pork and chicken breasts, exemplified by avoiding human risks of Salmonella infections and strengthening the restrictions of using antibiotics in the pork production and in terms of avoiding human risks of Salmonella and Campylobacter infections respectively. The results showed no indications of an embedding effect between the food safety characteristics, in neither of the cases.
Feedback cooling of atomic motion in cavity QED
Creators: name: Steck, Daniel A.
name: Jacobs, Kurt
name: Mabuchi, Hideo
name: Habib, Salman
name: Bhattacharya, Tanmoy
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the problem of controlling the motion of an atom trapped in an optical cavity using continuous feedback. In order to realize such a scheme experimentally, one must be able to perform state estimation of the atomic motion in real time. While in theory this estimate may be provided by a stochastic master equation describing the full dynamics of the observed system, integrating this equation in real time is impractical. Here we derive an approximate estimation equation for this purpose, and use it as a drive in a feedback algorithm designed to cool the motion of the atom. We examine the effectiveness of such a procedure using full simulations of the cavity QED system, including the quantized motion of the atom in one dimension.
description: 22 pages, 17 figures
Nutrient profile labelling: consumers’ perceptions in Germany and Belgium
Creators: name: Moeser, Anke
name: Hoefkens, Christine
name: Van Camp, John
name: Verbeke, Wim
name: Moeser, Anke
name: Hoefkens, Christine
name: Van Camp, John
name: Verbeke, Wim
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Nutrient profile labelling
subject: Nutrition policy
subject: European food industry
subject: Consumer survey.

description: Growing consumer interest in food and health has motivated the European food industry to provide more simple information on the nutritional composition of foods. In addition to the traditional back-of-pack nutrition table, simplified front-of-pack labels have been introduced by the food industry to allow consumers making better informed and healthier food choices. In this paper, consumers’ perceptions of simplified nutrition information, namely Guideline Daily Amount (GDA) and Traffic light (TL), in Germany and Belgium are explored. Surveys in Germany (147 respondents) and Belgium (128 respondents) were conducted in 2008. Data were analysed by means of descriptive statistics and regression analysis. In both countries, the GDA is the most widely used simplified nutrition label. Whereas most consumers in Belgium indicate a preference for the GDA, in Germany the Traffic light is favoured most. Regression analyses indicate that the predilection for the different labels is affected by sociodemographic characteristics and perceptions towards the respective labels. European nutrition policy makers should be aware of regional differences regarding the perception of simplified nutrition labels. The challenge for international food industries is therefore to raise awareness of the potential function of simplified labels in making informed and healthy food choices among different European consumer groups.
CoDeNet: Efficient Deployment of Input-Adaptive Object Detection on Embedded FPGAs
Creators: name: Dong, Zhen
name: Wang, Dequan
name: Huang, Qijing
name: Gao, Yizhao
name: Cai, Yaohui
name: Li, Tian
name: Wu, Bichen
name: Keutzer, Kurt
name: Wawrzynek, John
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Deploying deep learning models on embedded systems has been challenging due to limited computing resources. The majority of existing work focuses on accelerating image classification, while other fundamental vision problems, such as object detection, have not been adequately addressed. Compared with image classification, detection problems are more sensitive to the spatial variance of objects, and therefore, require specialized convolutions to aggregate spatial information. To address this need, recent work introduces dynamic deformable convolution to augment regular convolutions. However, this will lead to inefficient memory accesses of inputs with existing hardware. In this work, we harness the flexibility of FPGAs to develop a novel object detection pipeline with deformable convolutions. We show the speed-accuracy tradeoffs for a set of algorithm modifications including irregular-access versus limited-range and fixed-shape. We then Co-Design a Network CoDeNet with the modified deformable convolution and quantize it to 4-bit weights and 8-bit activations. With our high-efficiency implementation, our solution reaches 26.9 frames per second with a tiny model size of 0.76 MB while achieving 61.7 AP50 on the standard object detection dataset, Pascal VOC. With our higher accuracy implementation, our model gets to 67.1 AP50 on Pascal VOC with only 2.9 MB of parameters-20.9x smaller but 10% more accurate than Tiny-YOLO.
description: Github repo: https://github.com/DequanWang/CoDeNet arXiv:2002.08357 is the preliminary version of this paper
Old and new powerful tools for the normal ordering problem and noncommutative binomials
Creators: name: Beauduin, Kei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Combinatorics (math.CO)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 05A10, 05A19, 11B73, 11B75, 11B65, 13N15, 16S32, 34A05, 34A12

description: In this paper, we derive formal general formulas for noncommutative exponentiation and the exponential function, while also revisiting an unrecognized, and yet powerful theorem. These tools are subsequently applied to derive counterparts for the exponential identity $e^{A+B} = e^A e^B$ and the binomial theorem $(A+B)^n = \sum \binom{n}{k} A^k B^{n-k}$ when the commutator $[B, A]$ is either an arbitrary quadratic polynomial or a monomial in $A$ or $B$. Analogous formulas are found when the commutator is bivariate. Furthermore, we introduce a novel operator bridging between the normal and antinormal ordered forms.
description: 21 pages, 0 figures, published in ECA
Towards DNS of the Ultimate Regime of Rayleigh--Bénard Convection
Creators: name: Stevens, Richard J. A. M.
name: Lohse, Detlef
name: Verzicco, Roberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this contribution we have briefly introduced the problem of turbulent thermal convection with a particular look at its transition to the ultimate regime and the resolution requirements needed for the direct numerical simulation of this flow.
description: 10 pages, 6 figures
Testability infrastructure for Systems-on-Chip
Creators: name: Nahvi, Mohsen
Publisher: name: University of British Columbia
Year: 2009

description: Relying on external automatic test equipment (ATE) resources is insufficient for the new paradigm of billion-transistor core-based System-on-Chip (SoC) designs. Embedded testers that take over some functionality of these ATEs are increasingly deemed essential. To achieve high-quality test and reduce cost, these embedded infrastructures need to perform deterministic tests and exploit the advantages of automatic test pattern generation (ATPG) test vector sets. This thesis proposes an embedded testing infrastructure that leverages the potentials of the classical embedded testing in the form of Built-in Self-Test (BIST). However, unlike BIST, the methodology of this thesis is based on the conventional scan/ATPG approach. This novel methodology partitions test resources to embed the test application and test results analysis on-chip while keeping the ATPG test vector files off-chip. The proposed infrastructure was implemented on silicon and experimental area and test time results are reported. Using the methodology of this thesis, a high-quality deterministic test, with reduced overall test time through ideal multi-site testing, can be achieved. Modular, flexible, and systematic test architectures are also deemed essential in SoC tests. The conventional testing paradigm requires a direct connection between a tester and the circuit under test (CUT). This arrangement undermines the modularity in the test architecture by tightly coupling its elements. This thesis proposes to de-couple test data processing and communication to lower test cost. To that end, a novel systematic and indirect test architecture that is based on network-oriented protocols is proposed. In this new architecture, test stimuli and expected results for digital cores are formatted into new protocols and then encapsulated into packets. These packets are augmented with control and address bits allowing them to be autonomously transmitted to their destination through a switching infrastructure. Finally, embedded autonomous blocks at each core are used for applying the test and comparing the results. In this way, the methodology of this thesis facilitates test cycle automation and eliminates the need for control lines. This results in better utilisation of available resources. A first implementation of this new architecture and its area and test time impact are presented.
Optimal Experimental Design for Uncertain Systems Based on Coupled Differential Equations
Creators: name: Hong, Youngjoon
name: Kwon, Bongsuk
name: Yoon, Byung-Jun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We consider the optimal experimental design problem for an uncertain Kuramoto model, which consists of N interacting oscillators described by coupled ordinary differential equations. The objective is to design experiments that can effectively reduce the uncertainty present in the coupling strengths between the oscillators, thereby minimizing the cost of robust control of the uncertain Kuramoto model. We demonstrate the importance of quantifying the operational impact of the potential experiments in designing optimal experiments.
Electromagnetic observables of open-shell nuclei from coupled-cluster theory
Creators: name: Bonaiti, Francesca
name: Bacca, Sonia
name: Hagen, Gaute
name: Jansen, Gustav R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We develop a new method to describe electromagnetic observables of open-shell nuclei with two nucleons outside a closed shell. This approach combines the equation-of-motion coupled-cluster method for such systems and the Lorentz integral transform technique, expanding the applicability of coupled-cluster theory for these properties beyond closed-shell nuclei. To validate this new approach, we compute the non-energy-weighted dipole sum rule and the dipole polarizability of $^{16,24}$O in both the closed-shell and the new equation-of-motion coupled-cluster frameworks, finding agreement within error bars. We then analyze the evolution of the dipole polarizability along the oxygen and calcium isotopic chains. Our predictions agree well with available experimental data and other available theoretical calculations for the closed-shell $^{16,22}$O and the open-shell $^{18}$O. In the calcium isotopes, we observe that our dipole polarizability predictions for open-shell nuclei are lower than those of closed-shell nuclei. Our predictions for $^{24}$O and $^{54,56}$Ca will motivate future experimental studies at the dripline.
description: 18 pages, 7 figures, matches published version on Physical Review C
The sociospatial factors of death: Analyzing effects of geospatially-distributed variables in a Bayesian mortality model for Hong Kong
Creators: name: Alshaabi, Thayer
name: Dewhurst, David Rushing
name: Bagrow, James P.
name: Dodds, Peter Sheridan
name: Danforth, Christopher M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Human mortality is in part a function of multiple socioeconomic factors that differ both spatially and temporally. Adjusting for other covariates, the human lifespan is positively associated with household wealth. However, the extent to which mortality in a geographical region is a function of socioeconomic factors in both that region and its neighbors is unclear. There is also little information on the temporal components of this relationship. Using the districts of Hong Kong over multiple census years as a case study, we demonstrate that there are differences in how wealth indicator variables are associated with longevity in (a) areas that are affluent but neighbored by socially deprived districts versus (b) wealthy areas surrounded by similarly wealthy districts. We also show that the inclusion of spatially-distributed variables reduces uncertainty in mortality rate predictions in each census year when compared with a baseline model. Our results suggest that geographic mortality models should incorporate nonlocal information (e.g., spatial neighbors) to lower the variance of their mortality estimates, and point to a more in-depth analysis of sociospatial spillover effects on mortality rates.
description: 26 pages (15 main, 11 appendix), 22 figures (6 main, 11 appendix), 2 tables
Imbalances of chain performance: the case of the traditional food sector in the EU
Creators: name: Molnar, Adrienn
name: Gellynck, Xavier
name: Molnar, Adrienn
name: Gellynck, Xavier
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: chain performance imbalances
subject: chain relationships
subject: traditional food

description: Purpose : Measure chain performance in the traditional food sector and identify the main relationship measures determining performance. Methodology: Survey with 271 chain members from 91 traditional food chains from 3 European countries in 6 traditional food product categories. First 12 types of performance imbalances are distinguished and subsequently, cluster analysis is carried out. Finally, the nature of imbalances is linked to the quality of chain relationships. Findings: Three clusters are demarcated. Cluster one represents chains being characterized by higher performance of both suppliers and focal companies as compared to customers, while cluster three represents chains with high customer and focal company performance as compared to suppliers. Cluster two includes chains hardly including chain imbalances. Several relationship measures such as trust, conflict and reputation demonstrate discriminative power between the clusters. Research limitations/implications: The research is limited to traditional food chains. Practical implications: Our findings allow the identification of chain imbalances and as a result, allow chain members and policy makers to make specific and tailor made efforts to enhance performance at specific location of the chains, depending on the type of imbalance occurring. Originality/value: The shift to analysis of individual chains, horizontal comparison of chains and identification of chain commonalities may contribute to develop a new management theory.
D=2, N=2 Supersymmetric sigma models on Non(anti)commutative Superspace
Creators: name: Chandrasekhar, B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend the results of hep-th/0310137 to show that a general classical action for D=2, N=2 sigma models on a non(anti)commutative superspace is not standard and contains infinite number of terms, which depend on the determinant of the non(anti)commutativity parameter, C^{αβ}. We show that using Kahler normal coordinates the action can be written in a manifestly covariant manner. We introduce vector multiplets and obtain the N=1/2 supersymmetry transformations of the theory in the Wess-Zumino gauge. By explicitly deriving the expressions for vector and twisted superfields on non(anti)commutative superspace, we study the classical aspects of Gauged linear sigma models.
description: 38 pages, Latex; v3: Minor changes in the text, correction in eqns. (2.22) and (4.8), added references, version to appear in Phys. Rev. D
Minimum economic scale of an efficient farms in dairy industry
Creators: name: Nagy, Adrian Szilard
name: Dekan, Tamas
name: Lorinczi, Krisztian
name: Peto, Karoly
name: Nagy, Adrian Szilard
name: Dekan, Tamas
name: Lorinczi, Krisztian
name: Peto, Karoly
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: dairy industry
subject: family farm businesses
subject: economic size
subject: sustainability
subject: Standard Gross Margin.

description: The aim of our research is to determine - on the grounds of the facts of an average dairy family farm – the necessary economic size to provide subsistence for a four member family, which solely has income from this activity. Our study used three different calculation models. The models featured considerable differences. In the first one the primary aim of the producer is to survive, therefore the achieved gross income in farming includes neither amortization costs, nor the arising costs of repair and maintenance. On the contrary, the primary aim of the second model is to keep up the technology and the stock, which could fulfil the requirements of simple reproduction. The third model assumes a technological development corresponding with 10% of the invested asset value besides consolidation, thus ensuring the potential of reproduction on an increasing scale. The above mentioned calculations cover the period of several years. The studied years show differences in terms of the buying up price of milk, aid for milk production and the price of used inputs. Our study compared farm sizes with the viable plant size defined according to the Standard Gross Margin. As for the SGM a farm is already viable with 10 dairy cows and their progenies. However, our calculations show that a 10 cowed farm is not able to provide sufficient income for a four member family, if their aim is not only survival, but also simple or enlarged reproduction. The calculations reveal that among the fast changing market conditions of the dairy sector minimal farm size cannot be determined solely on the basis of profit figures in a given year, as in many cases it might lead to the exhaustion of reserves.
A Lack of Radio Emission from Neutron Star Low Mass X-ray Binaries
Creators: name: Muno, Michael P.
name: Belloni, Tomaso
name: Dhawan, Vivek
name: Morgan, Edward H.
name: Remillard, Ronald A.
name: Rupen, Michael P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report strict upper limits to the radio luminosities of three neutron star low-mass X-ray binaries obtained with the Very Large Array while they were in hard X-ray states as observed with the Rossi X-ray Timing Explorer: 1E 1724-307, 4U 1812-12, and SLX 1735-269. We compare these upper limits to the radio luminosities of several black hole binaries in very similar hard states, and find that the neutron star systems are as faint as or fainter than all of the black hole candidates. The differences in luminosities can partly be attributed to the lower masses of the neutron star systems, which on theoretical and observational grounds are expected to decrease the radio luminosities as M^0.8. However, there still remains a factor of 30 scatter in the radio luminosities of black hole and neutron star X-ray binaries, particularly at X-ray luminosities of a few percent Eddington. We find no obvious differences in the X-ray timing and spectral properties that can be correlated with the radio luminosity. We discuss the implications of these results on current models for the relationship between accretion and jets.
description: 9 pages, 5 figures, two of which are color. Submitted to ApJ
The Relationship between Demographic Factors, Career Satisfaction and Organisational Commitment: Evidence from the Kuwaiti Banking Sector
Creators: name: Baidoun, Nizar
Publisher: name: figshare
Year: 2020
Subjects: subject: Uncategorized
subject: 150305 Human Resources Management
subject: FOS: Economics and business

description: This study investigates issues related to career satisfaction and organisational commitment. The research was conducted within the Kuwaiti banking sector with the important feature of Kuwaitisation forming a key aspect. Grounded in social cognitive career theory, career theory, and cross-cultural comparison theories, this study specifically examines the relationship between demographic features, career satisfaction, and organisational commitment within the Kuwaiti banking sector. A systematic review of the empirical literature was undertaken which revealed that these issues are under-researched. The majority of previous studies in these fields have been conducted in different cultural contexts, and research in Kuwait has been lacking to date. The research approach is a quantitative one. During July 2015, a self-report questionnaire was distributed to employees working in all business departments at a large conventional bank (Alpha Bank) in Kuwait. Mean scores rank ordered, independent t-test, one-way ANOVA test, and structural equation modeling were employed to analyse the data. The findings suggest that age and promotion are related to career satisfaction while gender and tenure are not. In addition, the findings suggest that career satisfaction is positively related to affective, normative, and continuance commitment.
علي عماد محمد ازهر - جامعة الشرق الاوكرانية فلاديمير دال
Creators: name: imad, drali
Publisher: name: figshare
Year: 2021
Subjects: subject: 150203 Financial Institutions (incl. Banking)
subject: FOS: Economics and business

description: علي عماد محمد ازهر - جامعة الشرق الاوكرانية فلاديمير دال
In-medium changes of nucleon cross sections tested in neutrino-induced reactions
Creators: name: Bogart, B.
name: Gallmeister, K.
name: Mosel, U.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Historically studied in the context of heavy-ion collisions, the extent to which free nucleon-nucleon cross sections are modified in-medium remains undetermined by these data sets. Therefore, we investigate the impact of NN in-medium modifications on neutrino-nucleus cross section predictions using the GiBUU transport model. We find that including an in-medium lowering of the NN cross section and density dependence on $Δ$ excitation improves agreement with MicroBooNE neutrino-argon scattering data. This is observed for both proton and neutral pion spectra in charged-current muon neutrino and neutral-current single pion production datasets. The impact of collision broadening of the $Δ$ resonance is also investigated. The absence of $Δ$ broadening is slightly favored, but the larger uncertainties on the pion production data prevent definitive conclusions.
Active Galactic Nuclei In Cosmological Simulations - I. Formation of black holes and spheroids through mergers
Creators: name: Cattaneo, A.
name: Blaizot, J.
name: Devriendt, J.
name: Guiderdoni, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Active Galactic Nuclei In Cosmological Simulations (AGNICS) project includes AGN into the GalICS hybrid (N-body + semi-analytic) model to explore the quasar-galaxy link in a cosmological perspective. The key problems are the quasar fuelling mechanism, the origin of the BH to bulge mass relation, the causal and chronological link between BH growth and galaxy formation, the properties of quasar hosts and the role of AGN feedback in galaxy formation. This first paper has two goals: to describe the general structure and the assumptions of the method, and to apply AGNICS to studying the joint formation of BHs and spheroids in galaxy mergers. We investigate under what conditions this scenario can reproduce the local BH distribution and the evolution of the quasar population. AGNICS contains two star formation modes: a quiescent one in discs and a starburst one in protospheroids, the latter triggered by mergers and disc instabilities. We assume that BH growth is linked to the starburst mode. The simplest version of this scenario, in which the BH accretion rate and the star formation rate in the starburst component are simply related by a constant of proportionality, does not to reproduce the cosmic evolution of the quasar population. A model in which this relation is modulated by a scaling with the square root of the starburst gas density can explain the evolution of the quasar luminosity function in B-band and X-rays (accounting for the obscuration inferred from X-ray studies). The scatter and the tilt that this model introduces in the BH-to-bulge mass relation are within the observational constraints. The quasar contribution grows with bolometric luminosity and for a given bulge mass the most massive BHs are in the bulges with the oldest stars.
description: 20 pages, 11 figures, submitted to MNRAS on 1 Dec 2004, accepted
Note on Quantum Periods and a TBA-like System
Creators: name: Huang, Min-xin
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: There is an interesting relation between the quantum periods on a certain limit of local $\mathbb{P}^1\times \mathbb{P}^1$ Calabi-Yau space and a TBA (Thermodynamic Bethe Ansatz) system appeared in the studies of ABJM (Aharony-Bergman-Jafferis-Maldacena) theory. We propose a one-parameter generalization of the relation. Furthermore, we derive the differential operators for quantum periods and the TBA-like equation in various limits of the generalized relation.
description: 13 pages, no figure. v2: journal version