cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Triproducts, nonassociative star products and geometry of R-flux string compactifications
Creators: name: Aschieri, Paolo
name: Szabo, Richard J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We elucidate relations between different approaches to describing the nonassociative deformations of geometry that arise in non-geometric string theory. We demonstrate how to derive configuration space triproducts exactly from nonassociative phase space star products and extend the relationship in various directions. By foliating phase space with leaves of constant momentum we obtain families of Moyal-Weyl type deformations of triproducts, and we generalize them to new triproducts of differential forms and of tensor fields. We prove that nonassociativity disappears on-shell in all instances. We also extend our considerations to the differential geometry of nonassociative phase space, and study the induced deformations of configuration space diffeomorphisms. We further develop general prescriptions for deforming configuration space geometry from the nonassociative geometry of phase space, thus paving the way to a nonassociative theory of gravity in non-geometric flux compactifications of string theory.
description: 33 pages; Contribution to the Proceedings of "Conceptual and Technical Challenges for Quantum Gravity", September 8-12, 2014, Sapienza University of Rome, Italy; to be published in Journal of Physics Conference Series, eds. G. Amelino-Camelia, P. Martinetti and J.-C. Wallet
A study on rare-earth Laves phases for magnetocaloric liquefaction of hydrogen
Creators: name: Liu, Wei
name: Bykov, Eduard
name: Taskaev, Sergey
name: Bogush, Mikhail
name: Khovaylo, Vladimir
name: Fortunato, Nuno
name: Aubert, Alex
name: Zhang, Hongbin
name: Gottschall, Tino
name: Wosniza, Jochen
name: Scheibel, Franziska
name: Skokov, Konstantin
name: Gutfleisch, Oliver
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We are witnessing a great transition towards a society powered by renewable energies to meet the ever-stringent climate target. Hydrogen, as an energy carrier, will play a key role in building a climate-neutral society. Although liquid hydrogen is essential for hydrogen storage and transportation, liquefying hydrogen is costly with the conventional methods based on Joule-Thomas effect. As an emerging technology which is potentially more efficient, magnetocaloric hydrogen liquefaction is a "game-changer". In this work, we have investigated the rare-earth-based Laves phases ${\rm R}Al_2$ and ${\rm R}Ni_2$ for magnetocaloric hydrogen liquefaction. We have noticed an unaddressed feature that the magnetocaloric effect of second-order magnetocaloric materials can become "giant" near the hydrogen boiling point. This feature indicates strong correlations, down to the boiling point of hydrogen, among the three important quantities of the magnetocaloric effect: the maximum magnetic entropy change $ΔS_{m}^{max}$, the maximum adiabatic temperature change $ΔT_{ad}^{max}$, and the Curie temperature $T_C$. Via a comprehensive literature review, we interpret the correlations for a rare-earth intermetallic series as two trends: (1) $ΔS_{m}^{max}$ increases with decreasing $T_C$; (2) $ΔT_{ad}^{max}$ decreases near room temperature with decreasing $T_C$ but increases at cryogenic temperatures. Moreover, we have developed a mean-field approach to describe these two trends theoretically. The dependence of $ΔS_{m}^{max}$ and $ΔT_{ad}^{max}$ on $T_C$ revealed in this work helps us quickly anticipate the magnetocaloric performance of rare-earth-based compounds, guiding material design and accelerating the discoveries of magnetocaloric materials for hydrogen liquefaction.
Local density of states above a disk -- geometrical vs. thermal boundary conditions
Creators: name: Biehs, Svend-Age
name: Kittel, Achim
name: An, Zhenghua
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analytically calculate the contribution to the local density of states due to thermal sources in a disk-like patch within the framework of fluctuational electrodynamics. We further introduce a wavevector cutoff method to approximate this contribution. We compare the results obtained with the source and cutoff method with the numerical exact LDOS above a metal disk attained by SCUFF-EM calculations. By this comparison we highlight the difference and resemblance of thermal and geometrical boundary conditions which are both relevant for near-field scanning microscope measurements. Finally, we give an outlook to general lateral temperature profiles and compare it with surface profiles.
(101470) Samuel Newman
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
A quadratic finite element for the relaxed micromorphic model
Creators: name: Sky, Adam
name: Muench, Ingo
name: Neff, Patrizio
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: 690

description: In this work we discuss the relaxed micromorphic model and implementation details for a full three-dimensional formulation entailing a quadratic Lagrangian-Nédélec finite element and appropriate boundary conditions in the discrete setting. The relaxed micromorphic model is a generalized continuum theory with the capacity to capture more complex kinematical behaviour than in the classical Cauchy continua. Such behaviour is commonly found in materials with a pronounced micro-structure such as porous media and metamaterials. The theory introduces the microdistortion field, encompassing nine additional degrees of freedom for each material point in the continuum, effectively turning each material point into a deformable micro-body. The uncommon discrete formulation stems from the employment of the Curl operator in the energy functional of the relaxed micromorphic model, thus requiring H(curl)-conforming finite elements for well-posedness to be inherited in the discrete setting. The model further introduces the so called consistent coupling condition, which requires some technical considerations in order to be upheld correctly. This work demonstrates the finite element formulation, culminating with a numerical example.
description: Proceedings in applied mathematics and mechanics;23(1)
Mechanisms of Microtubule-Based Kinetochore Positioning in the Yeast Metaphase Spindle
Creators: name: Pearson, Chad G.
name: Sprague, Brian L.
name: Salmon, E. D.
name: Maddox, Paul S.
name: Odde, David J.
name: Bloom, Kerry S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003

description: It has been hypothesized that spatial gradients in kMT dynamic instability facilitate mitotic spindle formation and chromosome movement. To test this hypothesis requires the analysis of kMT dynamics, which have not been resolved at the single kMT level in living cells. The budding yeast spindle offers an attractive system in which to study kMT dynamics because, in contrast to animal cells, there is only one kMT per kinetochore. To visualize metaphase kMT plus-end dynamics in yeast, a strain containing a green fluorescent protein fusion to the kinetochore protein, Cse4, was imaged by fluorescence microscopy. Although individual kinetochores were not resolvable, we found that models of kMT dynamics could be evaluated by simulating the stochastic kMT dynamics and then simulating the fluorescence imaging of kMT plus-end-associated kinetochores. Statistical comparison of model-predicted images to experimentally observed images demonstrated that a pure dynamic instability model for kMT dynamics in the yeast metaphase spindle was unacceptable. However, when a temporally stable spatial gradient in the catastrophe or rescue frequency was added to the model, there was reasonable agreement between the model and the experiment. These results provide the first evidence of temporally stable spatial gradients of kMT catastrophe and/or rescue frequency in living cells.
A void in the Hubble tension? The end of the line for the Hubble bubble
Creators: name: Camarena, David
name: Marra, Valerio
name: Sakr, Ziad
name: Clarkson, Chris
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Universe may feature large-scale inhomogeneities beyond the standard paradigm, implying that statistical homogeneity and isotropy may be reached only on much larger scales than the usually assumed $\sim$100 Mpc. This means that we are not necessarily typical observers and that the Copernican principle could be recovered only on super-Hubble scales. Here, we do not assume the validity of the Copernican principle and let Cosmic Microwave Background, Baryon Acoustic Oscillations, type Ia supernovae, local $H_0$, cosmic chronometers, Compton y-distortion and kinetic Sunyaev-Zeldovich observations constrain the geometrical degrees of freedom of the local structure, which we parametrize via the $Λ$LTB model -- basically a non-linear radial perturbation of a FLRW metric. In order to quantify if a non-Copernican structure could explain away the Hubble tension, we pay careful attention to computing the Hubble constant in an inhomogeneous universe, and we adopt model selection via both the Bayes factor and the Akaike information criterion. Our results show that, while the $Λ$LTB model can successfully explain away the $H_0$ tension, it is favored with respect to the $Λ$CDM model only if one solely considers supernovae in the redshift range that is used to fit the Hubble constant, that is, $0.023
description: 11 pages, 7 figures, 7 tables, v2 reflects version accepted for publication in CQG
(101469) Henry Newman
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(101468) Mary Ann Newman
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(101467) Ann Newman
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(101466) Henry Newman
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Effective submodularity of influence maximization on temporal networks
Creators: name: Erkol, Sirag
name: Mazzilli, Dario
name: Radicchi, Filippo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study influence maximization on temporal networks. This is a special setting where the influence function is not submodular, and there is no optimality guarantee for solutions achieved via greedy optimization. We perform an exhaustive analysis on both real and synthetic networks. We show that the influence function of randomly sampled sets of seeds often violates the necessary conditions for submodularity. However, when sets of seeds are selected according to the greedy optimization strategy, the influence function behaves effectively as a submodular function. Specifically, violations of the necessary conditions for submodularity are never observed in real networks, and only rarely in synthetic ones. The direct comparison with exact solutions obtained via brute-force search indicate that the greedy strategy provides approximate solutions that are well within the optimality gap guaranteed for strictly submodular functions. Greedy optimization appears therefore an effective strategy for the maximization of influence on temporal networks.
description: 12 pages, 10 figures, 3 tables
(101465) Eva Mary Rutherford
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Discrete density comonads and graph parameters
Creators: name: Abramsky, Samson
name: Jakl, Tomáš
name: Paine, Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Category Theory (math.CT)
subject: Logic in Computer Science (cs.LO)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Game comonads have brought forth a new approach to studying finite model theory categorically. By representing model comparison games semantically as comonads, they allow important logical and combinatorial properties to be exressed in terms of their Eilenberg-Moore coalgebras. As a result, a number of results from finite model theory, such as preservation theorems and homomorphism counting theorems, have been formalised and parameterised by comonads, giving rise to new results simply by varying the comonad. In this paper we study the limits of the comonadic approach in the combinatorial and homomorphism-counting aspect of the theory, regardless of whether any model comparison games are involved. We show that any standard graph parameter has a corresponding comonad, classifying the same class. This comonad is constructed via a simple Kan extension formula, making it the initial solution to this problem and, furthermore, automatically admitting a homomorphism-counting theorem.
Constraining super-light sterile neutrinos at Borexino and KamLAND
Creators: name: Chen, Zikang
name: Liao, Jiajun
name: Ling, Jiajie
name: Yue, Baobiao
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The presence of a super-light sterile neutrino can lead to a dip in the survival probability of solar neutrinos, and explain the suppression of the upturn in the low energy solar neutrino data. In this work, we systematically study the survival probabilities in the 3+1 framework by taking into account of the non-adiabatic transitions and the coherence effect. We obtain an analytic equation that can predict the position of the dip. We also place constraints on the parameter space of sterile neutrinos by using the latest Borexino and KamLAND data. We find that the low and high energy neutrino data at Borexino are sensitive to different regions in the sterile neutrino parameter space. In the case with only $θ_{01}$ being nonzero, the $\rm{{}^{8}B}$ data sets the strongest bounds at $Δm_{01}^{2} \approx (1.1\sim2.2)Δm_{21}^{2}$, while the low energy neutrino data is more sensitive to other mass-squared regions. The lowest bounds on $Δm_{01}^{2}$ from the $\rm{pp}$ data can reach $10^{-12} \ \rm{eV^{2}}$ because of the coherence effect. Also, due to the presence of non-adiabatic transitions, the bounds in the range of $10^{-9} \ \textrm{eV}^{2} \lesssim Δm_{01}^{2} \lesssim 10^{-5} \ \textrm{eV}^{2}$ become weaker as $Δm_{01}^{2}$ or $\sin^{2}2θ_{01}$ decreases. We also find that in the case with only $θ_{02}$ or $θ_{03}$ being nonzero, the low energy solar neutrino data set similar but weaker bounds as compared to the case with only $θ_{01}$ being nonzero. However, the bounds from the high energy solar data and the KamLAND data are largely affected by the sterile mixing angles.
description: 34 pages, 8 figures. Version published in JHEP
(101464) Jane Hayward
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Design and Evaluation of MPPT Based Two Stage Battery Charging Scheme For A Solar PV Lighting System
Creators: name: T, Jarin
Publisher: name: figshare
Year: 2023
Subjects: Electrical engineering not elsewhere classified

description: The efficiency of a photovoltaic (PV) system will be greatly influenced by two factors: the effectiveness of the photovoltaic panel and the effectiveness of the electronic charging circuit. Since the PV panel efficiency has been controlled at the manufacturer level, the improvement in effectiveness of the electronic charging circuit is the solitary choice on the researcher side to improve the overall PV system efficiency. This paper proposes a novel design, development, and performance evaluation of a MPPT-based two-stage battery charging scheme that enables efficient battery charging. The street light with a capacity of 20 W has been associated with this proposed system and can function powerfully by the employment of an Automatic Luminous Control Mechanism. The experimental outcomes demonstrate that the suggested scheme with MPPT charger scores an average improved outcome of 10–15% better than a system without MPPT charger. These experimental studies also highlight that the battery back time could be improved because of the employment of an automatic light intensity control mechanism.
Higher Equivariant Excision
Creators: name: Dotto, Emanuele
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55P91, 55P65

description: We develop a theory of Goodwillie calculus for functors between $G$-equivariant homotopy theories, where $G$ is a finite group. We construct $J$-excisive approximations of a homotopy functor for any finite $G$-set $J$. These fit together into a poset, the Goodwillie tree, that extends the classical Goodwillie tower. We prove convergence results for the tree of a functor on pointed $G$-spaces that commutes with fixed-points, and we reinterpret the Tom Dieck-splitting as an instance of a more general splitting phenomenon that occurs for the fixed-points of the equivariant derivative of these functors. As our main example we describe the layers of the tree of the identity functor in terms of the equivariant Spanier-Whitehead duals of the partition complexes.
description: 70 pages
(101463) Henry Hayward
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Politiche del lavoro e azioni regionali: modelli di capitalismo tra eredità storica e capacità di innovazione
Creators: name: Lucciarini, Silvia
Publisher: name: Cambio. Rivista sulle Trasformazioni Sociali
Year: 2017

description: The paper shows the Institutional complementarities between active and passive labour market policies and welfare regime in a regional perspective. The aim is to explore the different outcomes in terms of growth and cohesion in the Italian regions, using a quali-quantitative analisys. A multilevel approach is developed, looking how the national regulation frame affects the local one, and how specific territorial outcomes depend on institutional and integration policy issues. It’s underpinned how the cognitive embeddedness determines patterns in local actor’s measures and frames.
description: Cambio. Rivista sulle Trasformazioni Sociali, Vol. 6 No. 12 (2016)
(101461) Eva Nash
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Mixed Bilayer Containing Dipalmitoylphosphatidylcholine and Dipalmitoylphosphatidylserine: Lipid Complexation, Ion Binding, and Electrostatics
Creators: name: Pandit, Sagar A.
name: Bostick, David
name: Berkowitz, Max L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003

description: Two mixed bilayers containing dipalmitoylphosphatidylcholine and dipalmitoylphosphatidylserine at a ratio of 5:1 are simulated in NaCl electrolyte solutions of different concentration using the molecular dynamics technique. Direct NH···O and CH···O hydrogen bonding between lipids was observed to serve as the basis of interlipid complexation. It is deduced from our results and previous studies that dipalmitoylphosphatidylcholine alone is less likely to form interlipid complexes than in the presence of bound ions or other bilayer “impurities” such as dipalmitoylphosphatidylserine. The binding of counterions is observed and quantitated. Based upon the calculated ion binding constants, the Gouy-Chapman surface potential () is calculated. In addition we calculated the electrostatic potential profile (Φ) by twice integrating the system charge distribution. A large discrepancy between and the value of Φ at the membrane surface is observed. However, at “larger” distance from the bilayer surface, a qualitative similarity in the z-profiles of Φ and ψGC is seen. The discrepancy between the two potential profiles near the bilayer surface is attributed to the discrete and nonbulk-like nature of water in the interfacial region and to the complex geometry of this region.
Scienza o scienze? Un contributo al dibattito con filosofi ciechi di fronte alla realtà
Creators: name: Elias, Norbert
Publisher: name: Cambio. Rivista sulle Trasformazioni Sociali
Year: 2017

description: Cambio. Rivista sulle Trasformazioni Sociali, Vol. 6 No. 12 (2016)
(101460) Gladys Edith Nash
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Pengukuran Persepsi Pelanggan Untuk Mengembangkan Strategi Pemasaran Pada PT. Herona Express Kantor Perwakilan Tangerang
Creators: name: Nurul Fadhillahqurani Adhiputri, Suntoro, Afferdhy Ariffien
Publisher: name: Zenodo
Year: 2023

description: Globalisasi dan perkembangan digitalisasi saat ini menuntut percepatan dan efisiensi pada aktivitas ekonomi masyarakat. Sejalan dengan hal tersebut, banyak perusahaan penyedia jasa logistik yang menawarkan kemudahan dalam menjalankan kegiatan logistik. Strategi pemasaran menjadi hal yang penting dan mendasar bagi banyak perusahaan, adanya strategi pemasaran yang baik dan sesuai dengan target pasar, hal ini membantu memperlancar dalam menjual berbagai jasa yang dimiliki perusahaan tersebut. semakin banyak jasa layanan yang terjual akan memberikan peningkatan pendapatan perusahaan. PT. Herona Express Tangerang dipilih untuk menjadi studi kasus yang dikaji. Perusahaan ini bergerak pada bidang jasa angkutan dan pengiriman barang yang menjangkau seluruh kota di pulau Jawa dan pulau Bali. hal ini disebabkan karena adanya aspek manajerial, aspek logistik, dan aspek strategi pemasaran yang tidak akurat sehingga perusahaan ini memperlukan perbaikan untuk membantu meningkatkan performa kinerja perusahaan perusahaan.Penelitian ini bertujuan untuk mengetahui bagaimana karakteristik konsumen dalam memilih produk layanan jasa, atribut pemasaran apa saja yang menjadi pertimbangan konsumen dalam memilih produk, dan strategi pemasaran seperti apa yang ideal diterapkan untuk perusahaan. Proses penelitian menggunakan observasi, penyebaran kuesioner kepada 80 responden. Pengolahan data pada penelitian ini menggunakan metode Marketing Mix 7P, Model Multi Atribute Fishbein, dan SWOT. Hasil penelitian ini menyimpulkan bahwa ditemukan permasalahan yang terdapat pada enam variabel yang mendapatkan nilai negatif (perbaikan), yaitu Aspek Product pada variabel "X2_1" berjumlah 10,61. Aspek promotion pada variabel "X3_1" berjumlah 10,66, Aspek promotion pada variabel "X3_3" berjumlah 10,49. Aspek promotion pada variabel "X3_5" berjumlah 9,95. Aspek promotion pada variabel "X3_7" berjumlah 10,56. Aspek physical evidence pada variabel "X7_3" berjumlah 10,63. Dari hasil temuan diatas, maka diperoleh suatu strategi untuk dapat mengembangkan PT. Herona Express Tangerang yaitu pengembangan Standard Operational Procedure, melengkapi material handling, menentukan peranan serta tanggung jawab setiap karyawan dengan jelas, penentuan segmentasi konsumen juga dapat membantu perusahaan untuk menentukan promosi yang akan ditawarkan, pengembangan all-in one service, mengembangkan jejaring kerjasama dengan perusahaan tramsportasi masal, serta perusahaan harus secara proaktif memberikan informasi kepada pelanggan tentang jadwal libur dan periode non-operasional perusahaan.
phyloglm models and trait plots using ‘sequenced species only’ trees from Contrasting stripes are a widespread feature of group living in birds, mammals and fishes
Creators: name: Negro, Juan J.
name: Doña, Jorge
name: Blázquez, M. Carmen
name: Rodríguez, Airam
name: Herbert-Read, James E.
name: M. De L. Brooke
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60801 Animal Behaviour

description: Table S1. Summary of phyloglm models. Table S2. Summary of phyloglm models using ‘sequenced species only’ trees. Fig S1. Trait plots (DNA-only species, see text) depicting the distribution of stripes (colored traits) across the phylogeny of Charadriiformes (a, gray), Anseriformes (b, orange), Ruminants (c, brown), and Fishes (d, blue).
From Lieb-Robinson Bounds to Automorphic Equivalence
Creators: name: Nachtergaele, Bruno
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 82B10 (Primary), 82B20, 82C10

description: I review the role of Lieb-Robinson bounds in characterizing and utilizing the locality properties of the Heisenberg dynamics of quantum lattice systems. In particular, I discuss two definitions of gapped ground state phases and show that they are essentially equivalent.
Molecular Dynamics Simulation of a Dipalmitoylphosphatidylcholine Bilayer with NaCl
Creators: name: Pandit, Sagar A.
name: Berkowitz, Max L.
name: Bostick, David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003

description: Molecular dynamics simulations are performed on two hydrated dipalmitoylphosphatidylcholine bilayer systems: one with pure water and one with added NaCl. Due to the rugged nature of the membrane/electrolyte interface, ion binding to the membrane surface is characterized by the loss of ion hydration. Using this structural characterization, binding of Na+ and Cl− ions to the membrane is observed, although the binding of Cl− is seen to be slightly weaker than that of Na+. Dehydration is seen to occur to a different extent for each type of ion. In addition, the excess binding of Na+ gives rise to a net positive surface charge density just outside the bilayer. The positive density produces a positive electrostatic potential in this region, whereas the system without salt shows an electrostatic potential of zero.
An Optimal Algorithm for Reconstructing Point Set Order Types from Radial Orderings
Creators: name: Aichholzer, Oswin
name: Kusters, Vincent
name: Mulzer, Wolfgang
name: Pilz, Alexander
name: Wettstein, Manuel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computational Geometry (cs.CG)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Let $P$ be a set of $n$ labeled points in the plane. The radial system of $P$ describes, for each $p\in P$, the order in which a ray that rotates around $p$ encounters the points in $P \setminus \{p\}$. This notion is related to the order type of $P$, which describes the orientation (clockwise or counterclockwise) of every ordered triple in $P$. Given only the order type, the radial system is uniquely determined and can easily be obtained. The converse, however, is not true. Indeed, let $R$ be the radial system of $P$, and let $T(R)$ be the set of all order types with radial system $R$ (we define $T(R) = \emptyset$ for the case that $R$ is not a valid radial system). Aichholzer et al. (Reconstructing Point Set Order Types from Radial Orderings, in ISAAC 2014) show that $T(R)$ may contain up to $n-1$ order types. They also provide polynomial-time algorithms to compute $T(R)$ when only $R$ is given. We describe a new algorithm for finding $T(R)$. The algorithm constructs the convex hulls of all possible point sets with the radial system $R$. After that, orientation queries on point triples can be answered in constant time. A representation of this set of convex hulls can be found in $O(n)$ queries to the radial system, using $O(n)$ additional processing time. This is optimal. Our results also generalize to abstract order types.
description: 23 pages, 11 figures; a preliminary version appeared at ISAAC 2015
Multi-GPU Approach for Training of Graph ML Models on large CFD Meshes
Creators: name: Strönisch, Sebastian
name: Sander, Maximilian
name: Knüpfer, Andreas
name: Meyer, Marcus
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Mesh-based numerical solvers are an important part in many design tool chains. However, accurate simulations like computational fluid dynamics are time and resource consuming which is why surrogate models are employed to speed-up the solution process. Machine Learning based surrogate models on the other hand are fast in predicting approximate solutions but often lack accuracy. Thus, the development of the predictor in a predictor-corrector approach is the focus here, where the surrogate model predicts a flow field and the numerical solver corrects it. This paper scales a state-of-the-art surrogate model from the domain of graph-based machine learning to industry-relevant mesh sizes of a numerical flow simulation. The approach partitions and distributes the flow domain to multiple GPUs and provides halo exchange between these partitions during training. The utilized graph neural network operates directly on the numerical mesh and is able to preserve complex geometries as well as all other properties of the mesh. The proposed surrogate model is evaluated with an application on a three dimensional turbomachinery setup and compared to a traditionally trained distributed model. The results show that the traditional approach produces superior predictions and outperforms the proposed surrogate model. Possible explanations, improvements and future directions are outlined.
Injection induced by coaxial laser interference in laser wakefield accelerators
Creators: name: Wang, Jia
name: Zeng, Ming
name: Li, Dazhang
name: Wang, Xiaoning
name: Lu, Wei
name: Gao, Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A new injection scheme using the interference of two coaxial laser pulses is proposed for generating high quality beams in laser wakefield accelerators. In this scheme, a relatively loosely focused laser pulse drives the plasma wakefield, and a tightly focused laser pulse with similar intensity triggers interference ring pattern which creates onion-like multi sheaths in the plasma wakefield. Due to the wavefront curvature change after the focal position of the tightly focused laser, the innermost sheath of the wakefield expands, which slows down the effective phase velocity of the wakefield and triggers injection of plasma electrons. Particle-in-cell simulations show that high quality electron beams with low energy spread (a few per mill), high charge (hundred picocoulomb) and small emittance (sub millimeter milliradian) at the same time can be generated using moderate laser parameters for properly chosen phase differences between the two lasers.
description: 5 pages, 4 figures
Protein Evolution within a Structural Space
Creators: name: Deeds, Eric J.
name: Shakhnovich, Eugene I.
name: Dokholyan, Nikolay V.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003

description: Understanding of the evolutionary origins of protein structures represents a key component of the understanding of molecular evolution as a whole. Here we seek to elucidate how the features of an underlying protein structural “space” might impact protein structural evolution. We approach this question using lattice polymers as a completely characterized model of this space. We develop a measure of structural comparison of lattice structures that is analogous to the one used to understand structural similarities between real proteins. We use this measure of structural relatedness to create a graph of lattice structures and compare this graph (in which nodes are lattice structures and edges are defined using structural similarity) to the graph obtained for real protein structures. We find that the graph obtained from all compact lattice structures exhibits a distribution of structural neighbors per node consistent with a random graph. We also find that subgraphs of 3500 nodes chosen either at random or according to physical constraints also represent random graphs. We develop a divergent evolution model based on the lattice space which produces graphs that, within certain parameter regimes, recapitulate the scale-free behavior observed in similar graphs of real protein structures.
(101459) Frances Alice Muriel Nash
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Magnetoelectric effects in the skyrmion host material Cu2OSeO3
Creators: name: Ruff, E.
name: Lunkenheimer, P.
name: Loidl, A.
name: Berger, H.
name: Krohns, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Insulating helimagnetic Cu2OSeO3 shows sizeable magnetoelectric effects in its skyrmion phase. Using magnetization measurements, magneto-current analysis and dielectric spectroscopy, we provide a thorough investigation of magnetoelectric coupling, polarization and dielectric constants of the ordered magnetic and polar phases of single-crystalline Cu2OSeO3 in external magnetic fields up to 150 mT and at temperatures below 60 K. From these measurements we construct a detailed phase diagram. Especially, the skyrmion phase and the metamagnetic transition of helical to conical spin order are characterized in detail. Finally we address the question if there is any signature of polar order that can be switched by an external electric field, which would imply multiferroic behaviour of Cu2OSeO3.
description: 9 pages, 5 figures
(101458) Alice J Hayward
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(101457) Charles Edward Douglas Boutflower
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(101456) Edith Mary Reynolds
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(101455) Helen Catherine Nash
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
The role of multi-parton interactions in doubly-heavy hadron production
Creators: name: Egede, Ulrik
name: Hadavizadeh, Tom
name: Singla, Minni
name: Skands, Peter
name: Vesterinen, Mika
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Beauty and charm quarks are ideal probes of pertubative Quantum Chromodymanics in proton-proton collisions, owing to their large masses. In this paper the role of multi-parton interactions in the production of doubly-heavy hadrons is studied using simulation samples generated with Pythia, a Monte Carlo event generator. Comparisons are made to the stand-alone generators BcVegPy and GenXicc. New methods of speeding up Pythia simulations for events containing heavy quarks are described, enabling the production of large samples with multiple heavy-quark pairs. We show that significantly higher production rates of doubly-heavy hadrons are predicted in models that allow heavy quarks originating from different parton-parton interactions (within the same hadron-hadron collision) to combine to form such hadrons. Quantitative predictions are sensitive to the modelling of colour reconnections. We suggest a set of experimental measurements capable of differentiating these additional contributions.
description: 31 pages, 27 figures
phyloglm models and trait plots using "sequenced species only" trees from Contrasting stripes are a widespread feature of group living in birds, mammals and fishes
Creators: name: Negro, Juan J.
name: Doña, Jorge
name: M. Carmen Blázquez
name: Airam Rodríguez
name: Herbert-Read, James E.
name: M. De L. Brooke
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60801 Animal Behaviour

description: Table S1. Summary of phyloglm models using "sequenced species only" trees. Fig 1S. Trait plots (DNA-only species, see text) depicting the distribution of stripes (colored traits) across the phylogeny of Charadriiformes (a, gray), Anseriformes (b, orange), Ruminants (c, brown), and Fishes (d, blue).
Backend compiler phases for trapped-ion quantum computers
Creators: name: Schmale, Tobias
name: Temesi, Bence
name: Baishya, Alakesh
name: Pulido-Mateo, Nicolas
name: Krinner, Ludwig
name: Dubielzig, Timko
name: Ospelkaus, Christian
name: Weimer, Hendrik
name: Borcherding, Daniel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A promising architecture for scaling up quantum computers based on trapped ions are so called Quantum Charged-Coupled Devices (QCCD). These consist of multiple ion traps, each designed for solving specific tasks, that are connected by transport links. In this paper we present the backend compiler phases needed for running quantum circuits on a QCCD architecture, while providing strategies to solve the optimization problems that occur when generating assembly instructions. We implement and test these strategies for the QVLS-Q1 chip architecture.
description: 6 pages, 4 figures